CN207961582U - A kind of anti-long-pending sand plug valve - Google Patents

Abstract

The utility model is related to oil gas field construction operation equipment technical fields, specifically, it is a kind of anti-long-pending sand plug valve, including valve body, valve deck and the cock stem being arranged in valve body, valve body is connected with valve deck, the lower end of cock stem is connected with cock, a driver is arranged in valve body upper end, driver is connect with valve body, driver delivers torque to cock stem by flat key, one packing unit is set outside cock, a piston is arranged in the top of packing unit, cock, a ring packing cavity is formed between cock stem and piston, spring is set in seal cavity, piston, cock stem, packing unit and cock are respectively positioned in valve body inner core, valve body inner core is connected to an oil duct, filling hydraulic oil is used to drive the up and down motion of piston inside oil duct.Gap between the utility model packing unit and cock is adjustable, very close to each other between cock, packing unit and valve body during pressure-bearing and trandfer fluid, avoids long-pending sand.

Description

A kind of anti-long-pending sand plug valve

Technical field

The utility model is related to oil gas field construction operation equipment technical fields, specifically, being a kind of anti-long-pending sand plug valve.

Background technology

The structure and principle of existing plug valve be：The part that existing plug valve seals is mainly metal valveBody, metal cock, metal sealing arcs and non-metallic seal, cock and sealing arcs inside and valve body and sealing arcsOutside is required for realizing and seal.The runner hole of identical size is designed in valve body, cock and sealing arcs, when the runner of threeWhen axially bored line is conllinear, plug valve is in open state, when cock is 90 degree rotatable around its axis, the runner hole of cock and arcs andThe runner hole of valve body is in vertical state, and plug valve is closed.

Existing plug valve there are the shortcomings that and shortcoming mainly have following three：The first, the cock of existing plug valve andIt is that simple metal sealing needs the machining accuracy of both guarantees high, difficulty of processing to realize sealing between on the inside of sealing arcsGreatly, of high cost, and be easily damaged and fail；The second, it is metal+nonmetallic sealing between sealing arcs outside and valve body, facesIdentical problem；Third, due to existing cock, sealing arcs and valve body be metal, in order to realize assembly, maintenance andRotation needs to ensure that there are certain gaps between three, this may result in valve inner product sand in use, and then makeSeal failure even results in whole scrap.

With increasing for China's exploitation of oil-gas field amount, the efficient pressing crack construction side such as " factory's formula " pressure break and " zip mode " pressure breakFormula is more and more, also, in order to improve the yield in later stage, the pressure of pressing crack construction is higher and higher, and operational discharge capacity is also increasinglyGreatly, the various fracturing sands for squeezing into shaft bottom also can be more and more, these volume increase construction technologies can all lead to the quick of original plug valveProduct sand, failure, increase the cost of construction.

Invention content

The utility model provides a kind of anti-long-pending sand plug valve to overcome the shortcomings of above-mentioned technical problem, with fracturing unit truck,Straight pipe-line, three-way connection etc. are used cooperatively, and mainly for delivery of high-pressure fluids such as fracturing fluids, major function is the logical of control piperIt is disconnected, it completes oil gas field and increases production construction operation.This plug valve realizes cock, fluid sealant by the packing unit of design new constructionGap between core and valve body is adjustable, solves the problems, such as that difficulty of processing is high, fragile and use is easy in the process and accumulates sand.

The technical solution for solving above-mentioned technical problem is as follows：

A kind of anti-long-pending sand plug valve, including valve body, valve deck and the cock stem being arranged in valve body, the valve body and valve deckIt is connected through a screw thread, the lower end of the cock stem is connected with cylindric cock, one driving of valve body upper end settingDevice, the driver are bolted connection with valve body, and the driver is connect by flat key with cock stem, describedDriver provides rotation torque, and driver delivers torque to cock stem by flat key, a cylinder is arranged outside the cockA piston is arranged in the top of the packing unit of shape, the packing unit, and one is formed between the cock, cock stem and pistonRing packing cavity, the seal cavity is interior to be arranged spring, and the spring is withstood between piston and cock, the workPlug, cock stem, packing unit and cock are respectively positioned in valve body inner core, and the valve body inner core is connected to an oil duct, the oilRoad end is connect with straight coupling, and outer liquid pressure oil is input to by the straight coupling in oil duct, and then is entered on pistonIn the annulus that portion and valve body bottom surface are formed, for driving piston motion.

It further says, third groove is offered on the cock stem, for installing third O-ring and third baffle ring,First groove is offered on the external cylindrical surface of the piston, for installing the first O-ring and the first baffle ring, the first OThe both sides of shape circle are both provided with the first baffle ring, prevent the first O-ring from squeezing out for realizing two-way；On the inner surface of the pistonSecond groove is offered, second groove is all provided with for installing the second O-ring and the second baffle ring, the both sides of second O-ringIt is equipped with the second baffle ring, prevents the second O-ring from squeezing out for realizing two-way.

It further says, the valve deck upper end is further opened with the 4th groove, for installing the 4th O-ring and fourth gearCircle, the high pressure fluid leak for preventing from conveying in valve body inner core.

Further say, the packing unit be monolithic construction or split structure, the packing unit byRubber or engineering plastics are made.

The utility model has the beneficial effects that：

The utility model provides a kind of anti-long-pending sand plug valve, and traditional gold is replaced using the packing unit of non-metallic materialBelong to sealing arcs, and the gap between packing unit and cock is adjustable, cock, packing unit during pressure-bearing and trandfer fluidAnd it is very close to each other between valve body, avoid long-pending sand.And the utility model by conventional metal sealing be changed to metal with it is nonmetallic itBetween sealing, greatly reduce sealing difficulty and difficulty of processing.

Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.

Description of the drawings

Fig. 1 is the cross-sectional view of the utility model；

Wherein, 1 is valve body；2 be packing unit；3 be the first O-ring；4 be the first baffle ring；5 be piston；6 be the 2nd O shapesCircle；7 be the second baffle ring；8 be third O-ring；9 be third baffle ring；10 be driver；11 be cock stem；12 be flat key；13 be bulletSpring, 14 be cock, and 15 be straight coupling, and 16 be fourth gear circle, and 17 be the 4th O-ring, and 18 be valve deck, and 19 be oil duct, and 20 be valveInternal core.

Specific implementation mode

Embodiment 1：

As shown in Figure 1：A kind of anti-long-pending sand plug valve, including valve body 1, valve deck 18 and the cock stem 11 being arranged in valve body 1,Valve body 1 and valve deck 18 are connected through a screw thread, and the lower end of the cock stem 11 and cylindric cock 14 connect, the valve bodyA driver 10 is arranged in 1 upper end, and the driver 10 is bolted connection with valve body 1, and the driver 10 is logicalIt crosses flat key 12 to connect with cock stem 11, the driver 10 provides rotation torque, and driver 10 is passed torque by flat key 12Cock stem 11 is passed, 14 outside setting of cock, the one cylindric packing unit 2, the top of the packing unit 2 is setA piston 5 is set, forms a ring packing cavity between the cock 14, cock stem 11 and piston 5, in the seal cavitySpring 13 is set, and the spring 13 is withstood between piston 5 and cock 14, the piston 5, cock stem 11,2 and of packing unitCock 14 is respectively positioned in valve body inner core 20, and the valve body inner core 20 is connected to an oil duct 19,19 end of oil duct with it is straightPass joint 15 connects, and hydraulic oil enters oil duct 19 by the straight coupling 15, and then enters 5 top of piston and 1 bottom of valve bodyIn the annulus that face is formed, for driving piston 5 to move.Third groove is offered on the cock stem 11, for installingThird O-ring 8, third baffle ring 9, offer first groove and second groove on the piston 5, and first groove is for installing theThe both sides of one O-ring 3 and the first baffle ring 4, first O-ring 3 are both provided with the first baffle ring 4, are prevented for realizing two-wayThe function that first O-ring 3 squeezes out, likewise, second groove is for installing the second O-ring 6 and the second baffle ring 7, the 2nd OThe both sides of shape circle 6 are both provided with the second baffle ring 7, for realizing the two-way function of preventing the second O-ring 6 from squeezing out.The valve deck18 upper ends are further opened with the 4th groove, for installing the 4th O-ring 17 and fourth gear circle 16, for preventing in valve body inner core 20High-pressure fluid leakage.The packing unit 2 is made of monolithic construction of rubber.

Embodiment 2：

A kind of anti-long-pending sand plug valve, including valve body 1, valve deck 18 and the cock stem 11 being arranged in valve body 1, valve body 1 and valveLid 18 is connected through a screw thread, and the lower end of the cock stem 11 and cylindric cock 14 connect, and 1 upper end of valve body is setSet a driver 10, the driver 10 is bolted connection with valve body 1, the driver 10 by flat key 12 withCock stem 11 connects, and the driver 10 provides rotation torque, and driver 10 delivers torque to cock stem by flat key 1211, a piston 5 is arranged in 14 outside setting of cock, the one cylindric packing unit 2, the top of the packing unit 2,A ring packing cavity is formed between the cock 14, cock stem 11 and piston 5, and spring is set in the seal cavity13, the spring 13 is withstood between piston 5 and cock 14, and the piston 5, cock stem 11, packing unit 2 and cock 14 are equalIn valve body inner core 20, the valve body inner core 20 is connected to an oil duct 19,19 end of oil duct and straight coupling 15Connection, hydraulic oil enter oil duct 19 by the straight coupling 15, and then formed into 5 top of piston and 1 bottom surface of valve bodyIn annulus, for driving piston 5 to move.Third groove is offered on the cock stem 11, for installing third O-ring8, third baffle ring 9 offers first groove and second groove on the piston 5, and first groove is for installing the first O-ring 3It is both provided with the first baffle ring 4 with the both sides of the first baffle ring 4, first O-ring 3, the first O-ring is prevented for realizing two-way3 functions of squeezing out, likewise, second groove is for installing the second O-ring 6 and the second baffle ring 7, the two of second O-ring 6Side is both provided with the second baffle ring 7, for realizing the two-way function of preventing the second O-ring 6 from squeezing out.18 upper end of valve deck is alsoThe 4th groove is offered, for installing the 4th O-ring 17 and fourth gear circle 16, for preventing the high-pressure fluid in valve body inner core 20Leakage.The packing unit 2 is made of split structure of engineering plastics.

The course of work of the utility model is as follows：

Valve body 1, cylindric packing unit 2, columned cock 14, cock stem 11 and valve deck 18 are the cores of the designPart plays pressure-bearing and pressure control.Driver 10 is located at the upper end of valve body 1, is fastened by bolts on valve body 1, driver10 deliver torque to cock stem 11 by flat key 12, and 11 lower end of cock stem and cock 14 are connected with each other, and cock 14 can and be revolvedStopper rod 11 rotates together, and realizes the opening and closing of plug valve.

Hydraulic oil can enter the ring that 1 bottom of valve body and 5 top of piston are collectively formed by straight coupling 15 through oil duct 19In shape space, as hydraulic oil constantly enters the annular space, hydraulic oil driving piston 5 is moved down, is compressed, compression seal glueCore 2, with the compression of packing unit 2, the height of packing unit is lower, and thickness thickens, the gap quilt between cock 14 and valve body 1It gradually fills up, prevents valve chamber internal high pressure medium from revealing.It is designed with groove on piston 5, for installing O-ring 3, baffle ring 4, O shapes6 and baffle ring 7 are enclosed, groove is also configured on cock stem 11, for installing O-ring 8 and baffle ring 9.O-ring 3, baffle ring 4, O-ring 6,The annular space that baffle ring 7, O-ring 8 and baffle ring 9 make valve body 1, cock stem 11 and piston 5 be collectively formed is a confined space, is preventedHydraulic oil leakage in this confined space.After hydraulic oil is released by straight coupling 15, spring 13 can be by 5 bullet of pistonIt rises, while the shape before the recovery of packing unit 2, cock 14 is unclamped, cock 14 is allow easily to be rotated.

It is connected through a screw thread between valve deck 18 and valve body 1, and groove is designed on valve deck 18, for installing 17 He of O-ringBaffle ring 16 prevents the high-pressure fluid inside valve chamber from leaking outside.

It drives piston 5 to move down by hydraulic oil, compresses, compresses packing unit 2, it is close with the compression of packing unit 2The height of sealing core 2 is lower, and thickness thickens, and the gap between cock 14 and valve body 1 is increasingly filled, and prevents valve chamber internal high pressureMedium is revealed, and realizes valve seal.After hydraulic oil releases, spring 13 can bounce piston 5, and packing unit 2 is made to restoreShape before unclamps cock 14, and cock 14 is allow easily to be rotated.It is adjustable that entirety realizes gap, that is, works as needsWhen rotating cock, pressure is released, makes have gap between valve body 1, packing unit 2 and cock 14, it can be with ease rotation cock；When needWant very close to each other between valve body 1, packing unit 2 and cock 14, it, can be by injecting hydraulic pressure into system when meeting seal requestOil, driving piston 5, which moves down, compresses packing unit 2 to realize, due in this sealing state lower valve body 1, packing unit 2 and cockIt is very close to each other between 14, it can effectively avoid long-pending sand, lift-off seal effect and service life.

Valve body 1, cylindric packing unit 2 and columned cock 14, this three parts are the cores of the utility modelPoint, valve body 1 is main body, for installing remaining parts, and bears internal pressure.Packing unit 2 and cock 14 are main sealingsPart, by controlling machining accuracy and using special processing technology, the finish of the inner cavity of valve body 1 is very high, the surface of cock 14Finish and case hardness are also very high, these all contribute to realize sealing requirement, packing unit when bearing axial compressive force,Wall thickness can become larger, and help to fill the gap between valve body 1 and cock 14, realize the function of sealing and anti-long-pending sand.

Driver 10 can provide rotation torque, be connected by flat key 12 between driver 10 and cock stem 11, driverTorque can pass to cock stem by flat key, and then cock 14 is driven to rotate.State as shown in Figure 1 is the unlatching of plug valveState, when driver 10 works, when the torque of output passes to cock stem 11 by flat key 12, cock stem 11 will pass torqueCock 14 is passed, and then cock 14 is driven to rotate, after cock 14 rotates 90 degree, on the runner hole and valve body in cock 14Runner hole is in the state being mutually perpendicular to staggeredly, reaches the sealing station of plug valve.

Hydraulic oil can enter the annular that valve body 1, cock stem 11 and piston 5 are collectively formed by straight coupling 15 through oil ductIn space, as hydraulic oil constantly enters the annular space, hydraulic oil driving piston 5 is moved down, is compressed, compression seal glue core2, with the compression of packing unit 2, the height of packing unit is lower, and thickness thickens, the gap between cock 14 and valve body 1 by byIt gradually fills up, prevents valve chamber internal high pressure medium from revealing.It is designed with groove on piston 5, for installing O-ring 3, baffle ring 4, O-ring 6With baffle ring 7, groove is also configured on cock stem 11, for installing O-ring 8 and baffle ring 9.O-ring 3, baffle ring 4, O-ring 6, baffle ring7, the annular space that O-ring 8 and baffle ring 9 make valve body 1, cock stem 11 and piston 5 be collectively formed is a confined space, prevents thisHydraulic oil leakage in confined space.After hydraulic oil is released by straight coupling 15, spring 13 can bounce piston 5,Shape before packing unit 2 restores simultaneously, cock 14 is unclamped, cock 14 is allow easily to be rotated.

Below as expanding, the utility model is described as follows：

1, the utility model can be by entirety as a kind of improvement to the utility model using integral seal glue coreFormula glue core is changed to split type, also belongs to the point to be protected of this patent.

2, piston is driven to compress and compression seal glue core by hydraulic oil in the utility model, as to the utility modelA kind of improvement, be changed to other non-hydraulic type of drive such as mechanical, pneumatic type to realize identical function, also belong to this ShenIt please be in the appended claims limited range.

3, the utility model is to drive piston to move up by spring, realizes the reset of packing unit, likewise, using itHis mode realizes this identical function, also belongs in the scope of the appended claims of the present application.

4, the cock in the utility model is cylindrical design, and packing unit is cylindric design, and body cavity is also roundColumnar design, as an improvement design, can be designed as the non-cylindrical such as circular cone by cock, packing unit and body cavityDesign, also belongs in the scope of the appended claims of the present application.

5, the plug valve in the utility model provides rotation torque using driver, and driving cock rotation changes as one kindInto design, the type of drive of the other forms such as driver is pneumatic, electronic, mechanical structure also belongs to right appended by the applicationIn claim limited range.

6, using threaded connection between the valve deck and valve body in the utility model, as an improvement, threaded connection is changedFor other connection types such as bolt fastenings, also belong in the scope of the appended claims of the present application.

7, the sealing means in the utility model are all the forms using O-ring+baffle ring combination sealing, for this professionTechnical staff for, realize identical sealing, there is many seal forms, do other change, also belong to the application instituteIn attached claims limited range.

Claims (4)

1. a kind of anti-long-pending sand plug valve, including valve body, valve deck and the cock stem being arranged in valve body, which is characterized in that describedValve body and valve deck are connected through a screw thread, and the lower end of the cock stem is connected with cylindric cock, the valve body upper endOne driver is set, and the driver is bolted connection with valve body, and the driver passes through flat key and cock stemConnection, the driver provide rotation torque, and driver delivers torque to cock stem by flat key, outside the cockOne cylindric packing unit is set, and a piston, the cock, cock stem and piston is arranged in the top of the packing unitBetween form a ring packing cavity, spring is set in the seal cavity, the spring is withstood between piston and cock,Piston, cock stem, packing unit and the cock is respectively positioned in valve body inner core, and the valve body inner core is connected to an oil duct,The oil duct end is connect with straight coupling, and outer liquid pressure oil is input to by the straight coupling in oil duct, Jin ErjinEnter in upper piston area and the annulus of valve body bottom surface formation, for driving piston motion.

2. anti-long-pending sand plug valve according to claim 1, which is characterized in that offer third ditch on the cock stemSlot offers first groove, for installing for installing third O-ring and third baffle ring on the external cylindrical surface of the pistonThe both sides of first O-ring and the first baffle ring, first O-ring are both provided with the first baffle ring, and is prevented for realizing two-wayOne O-ring squeezes out；Offer second groove on the inner surface of the piston, second groove is for installing the second O-ring and theThe both sides of two baffle rings, second O-ring are both provided with the second baffle ring, prevent the second O-ring from squeezing out for realizing two-way.

3. anti-long-pending sand plug valve according to claim 1, which is characterized in that the valve deck upper end is further opened with the 4thGroove, for installing the 4th O-ring and fourth gear circle, the high pressure fluid leak for preventing from conveying in valve body inner core.

4. anti-long-pending sand plug valve according to claim 1, which is characterized in that the packing unit be monolithic construction orPerson's split structure, the packing unit are made of rubber or engineering plastics.