CN112594024A - Pressure regulating valve for lubricating oil system of high-power diesel engine - Google Patents

Abstract

The invention discloses a pressure regulating valve for a high-power diesel engine lubricating oil system, which relates to the technical field of machinery, and particularly relates to a pressure regulating valve for a high-power diesel engine lubricating oil system. The pressure regulating valve for the lubricating oil system of the high-power diesel engine is mechanical, has a simple structure and high reliability, is convenient to operate, meets daily quick inspection and adjustment, improves the working efficiency, reduces the working intensity, and can meet the lubricating oil pressure regulating requirements of the lubricating oil systems of different machine types of high-power diesel engines.

Description

Pressure regulating valve for lubricating oil system of high-power diesel engine

Technical Field

The invention relates to the technical field of machinery, in particular to a pressure regulating valve for a lubricating oil system of a high-power diesel engine.

Background

For a large-scale ship power diesel engine, the lubricating oil pressure of a lubricating oil system influences the dynamic property, stability and reliability of the large-scale ship power diesel engine, and simultaneously concerns the safety of users.

The lubricating oil system of the diesel engine can provide stable oil inlet pressure to ensure the lubricating and cooling effects of all moving parts and functional parts under different loads and rotating speeds of the diesel engine, and overlarge or undersize lubricating oil pressure directly influences the normal work of the parts and damages important moving matching surfaces, so that the parts fail and the diesel engine cannot work. Due to the change of the external environment, the diesel engine needs to be provided with corresponding pressure regulating valves to adapt to different conditions, and the safety of the diesel engine is ensured, so that the structure and the pressure regulating mode of the pressure regulating valves are inevitably involved in the design process. In order to simplify the requirements of assembly, maintenance and pressure regulation, the reliability of the pressure regulating valve must be improved, the number of parts is reduced, and the operation is convenient, but the existing pressure regulating valve with single function, complex disassembly and assembly and inconvenient pressure regulation cannot meet the requirement.

Disclosure of Invention

The invention aims to provide a pressure regulating valve for a lubricating oil system of a high-power diesel engine, which has a simple structure and is convenient to operate, so that the effects of facilitating operation, improving efficiency, shortening operation time and ensuring lubricating oil pressure regulation are achieved, and the pressure regulating valve can meet the requirements of various types of high-power diesel engines under different conditions.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a pressure regulating valve for high-power diesel engine lubricating oil system, includes the distribution piece, the inside movable mounting of distribution piece has the slide valve piston, and the outside activity of slide valve piston has cup jointed the spring, the one end movable mounting of distribution piece has the blind flange, and the inside movable mounting of blind flange has the bolt, bolt and distribution piece threaded connection, the outside movable sleeve of bolt is equipped with the packing ring, the place ahead of distribution piece is provided with oil-out one, the place ahead of distribution piece is provided with the draining mouth that is located oil-out one bottom, the side of distribution piece is provided with the oil inlet, the top of distribution piece is provided with oil-out two.

Preferably, the top of the distribution block is provided with four through mounting holes, the diameter value of each through mounting hole is 18 millimeters, the diameter value of a side oil inlet of the distribution block is 105 millimeters, the diameter value of a front oil outlet of the distribution block is 105 millimeters, the diameter value of a front oil drain opening of the distribution block is 46 millimeters, and the diameter value of a top oil outlet of the distribution block is 46 millimeters.

Preferably, four mounting threaded holes are formed in the side face of the distribution block, and the specification of the mounting threaded holes is G1/2.

Preferably, an oil drainage channel communicated with the oil drainage port is formed in the distribution block, a measuring threaded hole penetrating through the oil drainage channel is formed in the side face of the distribution block, the specification of the measuring threaded hole is G1/2, a second plug screw is sleeved on the inner thread of the measuring threaded hole, and a second gasket is sleeved on the outer portion of the second plug screw in a movable mode.

Preferably, the side of the distribution block is provided with an inspection threaded hole penetrating to the oil drainage channel, the specification of the inspection threaded hole is M48, the internal thread of the inspection threaded hole is sleeved with a first plug screw, and the external part of the first plug screw is movably sleeved with a first gasket.

Preferably, the outer diameter value of the slide valve piston is 70 mm, the material is HT250, and the free height of the spring is 213 mm.

Preferably, the top of blind flange is provided with four perforating holes, the middle part of blind flange is provided with connecting screw hole, and connecting screw hole's specification is M18, the outside movable sleeve of blind flange is equipped with the adjusting shim who is located distribution piece one end, the adjusting shim is the combination formula, and adjusting shim thickness specification is 5 millimeters, 0.5 millimeter.

Preferably, the flange cover is movably sleeved with an O-ring inside the distribution block.

The invention provides a pressure regulating valve for a lubricating oil system of a high-power diesel engine, which has the following beneficial effects:

1. the pressure regulating valve for the lubricating oil system of the high-power diesel engine is mechanical, has a simple structure and high reliability, is convenient to operate, meets daily quick inspection and adjustment, improves the working efficiency, reduces the working intensity, and can meet the lubricating oil pressure regulating requirements of the lubricating oil systems of different machine types of high-power diesel engines.

2. This a pressure regulating valve for high-power diesel engine lubricating oil system, set up the installation screw hole through the side at the distribution piece, can be used to installation sensor and sampling pipe, the accuracy of measuring lubricating oil pressure can be guaranteed to the redundant mode of many acquisition points, in order to avoid taking place when single sensor trouble, the lubricating oil pressure of entering machine can't be known, misjudge diesel engine running state, a measurement screw hole has been reserved on draining the passageway, can be used to the installation sensor and measure the pressure when draining, be convenient for monitor the distribution piece internal behavior, be convenient for make the processing when distribution piece internal pressure appears changing, reduce the probability of taking place the incident.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic structural view of section A-A of the present invention;

FIG. 3 is a rear view of the present invention;

FIG. 4 is a schematic structural view of a three-dimensional structure (including a fluid orientation) according to the present invention.

In the figure: 1. allocating blocks; 2. a spool piston; 3. a spring; 4. a flange cover; 5. a bolt; 6. a gasket; 7. a first plug screw; 8. a first gasket; 9. an O-shaped sealing ring; 10. adjusting the gasket; 11. a second plug screw; 12. a second gasket; 13. an oil inlet; 14. a first oil outlet; 15. an oil outlet II; 16. an oil drainage port; 17. and installing a threaded hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 4, the present invention provides a technical solution: a pressure regulating valve for a lubricating oil system of a high-power diesel engine comprises adistribution block 1, asliding valve piston 2 is movably arranged inside thedistribution block 1, aspring 3 is movably sleeved outside the slidingvalve piston 2, aflange cover 4 is movably arranged at one end of thedistribution block 1, abolt 5 is movably arranged inside theflange cover 4, thebolt 5 is in threaded connection with thedistribution block 1, agasket 6 is movably sleeved outside thebolt 5, afirst oil outlet 14 is arranged in front of thedistribution block 1, anoil drainage port 16 located at the bottom of thefirst oil outlet 14 is arranged in front of thedistribution block 1, an oil inlet 13 is arranged on the side face of thedistribution block 1, asecond oil outlet 15 is arranged at the top of thedistribution block 1, four through mounting holes are arranged at the top of thedistribution block 1, the diameter value of the through mounting holes is 18 mm, the diameter value of the oil inlet 13 at the side face of thedistribution block 1 is 105 mm, the diameter value of, the diameter value of anoil drain port 16 in front of thedistribution block 1 is 46 mm, the diameter value of an oil outlet two 15 at the top of thedistribution block 1 is 46 mm, the diameter of an oil inlet 13 is larger than the diameter of an oil outlet one 14, when clean lubricating oil after a filter enters a cavity of thedistribution block 1, certain pressure exists in the lubricating oil in the cavity, when the pressure is smaller than the set pressure of a regulating valve, the lubricating oil enters a main lubricating oil pipe through the oil outlet one 14 and enters a supercharger lubricating oil pipe through the oil outlet two 15, the oil drain port of thedistribution block 1 is free of lubricating oil, when the pressure is larger than the set pressure of a pressure regulating valve, the lubricating oil exists in the oil outlet one 14, the oil outlet two 15 and theoil drain port 16, the pressure of the lubricating oil entering the main lubricating oil pipe is reduced through theoil drain port 16, four mounting threadedholes 17 are arranged on the side surface of thedistribution block 1, the specification of the mounting threadedholes 17 is G1, the side surface of thedistribution block 1 is provided with a measuring threaded hole penetrating to the oil drainage channel, the specification of the measuring threaded hole is G1/2, the internal thread of the measuring threaded hole is sleeved with asecond screw plug 11, the external activity of thesecond screw plug 11 is sleeved with asecond gasket 12, the side surface of thedistribution block 1 is provided with an inspection threaded hole penetrating to the oil drainage channel, the specification of the inspection threaded hole is M48, the internal thread of the inspection threaded hole is sleeved with afirst screw plug 7, the external activity of thefirst screw plug 7 is sleeved with afirst gasket 8, the side surface of thedistribution block 1 is provided with a mounting threadedhole 17 which can be used for mounting a sensor and a sampling pipe, the accuracy of measuring the lubricating oil pressure can be ensured in a multi-acquisition-point redundancy mode, so that the lubricating oil pressure of an engine cannot be known when a single sensor fails, the running state of a diesel engine is misjudged, and a measuring threaded hole is reserved on the oil drainage channel, the pressure measuring device can be used for installing a sensor to measure pressure during oil drainage, sealing is carried out through thesecond screw plug 11 and thesecond gasket 12 during normal use, an M48 inspection threaded hole is reserved under the condition that the whole pressure regulating valve is not dismounted, the opening and closing conditions of internal lubricating oil pressure and a piston can be inspected after thefirst screw plug 7 is unscrewed, the outer diameter value of the slidingvalve piston 2 is 70 mm, the material is HT250, the free height of thespring 3 is 213 mm, the gray iron material has excellent wear resistance, frequent opening and closing actions do not influence the clearance fit between thesliding valve piston 2 and thedistribution block 1, a threaded hole in the slidingvalve piston 2 can be used for dismounting a special tool, the special tool is screwed into the threaded hole in thesliding valve piston 2 after passing through the threaded hole in theflange cover 4, thespring 3 is ensured to slowly release elasticity and tighten when the slidingvalve piston 2 is dismounted, the safety is ensured, and the end face of theflange cover 4 is provided with four, the piston is fixed on thedistribution block 1 throughbolts 5 and agasket 6, and is provided with an M18 connecting threaded hole for connecting the outside, the rear internal pressure and possibly leaked lubricating oil when the piston is pressed are released, the top of theflange cover 4 is provided with four through holes, the middle part of theflange cover 4 is provided with the connecting threaded hole, the specification of the connecting threaded hole is M18, the outside of theflange cover 4 is movably sleeved with an adjustinggasket 10 positioned at one end of thedistribution block 1, the adjustinggasket 10 is combined, the thickness specification of the adjustinggasket 10 is 5 mm and 0.5 mm, the outside of theflange cover 4 is movably sleeved with an O-shaped sealing ring 9 positioned inside thedistribution block 1, the pressure of the lubricating oil entering the machine can be adjusted by increasing or reducing the thickness of the gasket according to the actual assembly condition on site, the O-shaped sealing ring 9 is used for sealing the gap between theflange cover 4 and thedistribution block 1 and preventing the lubricating oil from, the use pressure of the lubricating oil is reduced.

In conclusion, when the pressure regulating valve for the lubricating oil system of the high-power diesel engine is used, the pressure regulating valve is fixed outside the diesel engine, the connection of an oil inlet pipe and an oil return pipe is completed, lubricating oil passing through a filter enters the inner cavity of thedistribution block 1, the real-time lubricating oil pressure in the cavity of thedistribution block 1 is collected through the sampling point on the side surface, and data are transmitted to the centralized control system to judge the condition of the diesel engine; according to the transmitted lubricating oil pressure data, the thickness of the adjustinggasket 10 is changed, the design requirements of specific projects are met, and the safety of the diesel engine is ensured; after the thickness of the adjustingshim 10 is changed, thefirst plug screw 7 can be unscrewed to check whether theslide valve piston 2 can be opened and closed correctly when the lubricating oil is pre-pressurized; when the pressure of the lubricating oil in the cavity of thedistribution block 1 is greater than the adjusted set pressure, theslide valve piston 2 is opened, the lubricating oil is discharged, the pressure is released, and when the pressure of the lubricating oil in the cavity of thedistribution block 1 is less than the adjusted set pressure, the lubricating oil respectively lubricates corresponding part parts through the oil outlet I14 and the oil outlet II 15.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A pressure regulating valve for a high-power diesel engine lubricating oil system comprises a distribution block (1), and is characterized in that: the utility model discloses a distribution block, including distribution block (1), the inside movable mounting of distribution block (1) has slide valve piston (2), and the outside activity of slide valve piston (2) has cup jointed spring (3), the one end movable mounting of distribution block (1) has flange lid (4), and the inside movable mounting of flange lid (4) has bolt (5), bolt (5) and distribution block (1) threaded connection, the outside movable mounting of bolt (5) is equipped with packing ring (6), the place ahead of distribution block (1) is provided with oil-out (14), the place ahead of distribution block (1) is provided with draining port (16) that are located oil-out (14) bottom, the side of distribution block (1) is provided with oil inlet (13), the top of distribution block (1) is provided with oil-out two (15).

2. The pressure regulating valve for a high power diesel engine oil system of claim 1, wherein: the top of distribution piece (1) is provided with four through mounting holes, and the diameter value who link up the mounting hole is 18 millimeters, the diameter value of distribution piece (1) side oil inlet (13) is 105 millimeters, the diameter value of distribution piece (1) the place ahead oil-out (14) is 105 millimeters, the diameter value of distribution piece (1) the place ahead draining mouth (16) is 46 millimeters, the diameter value of distribution piece (1) top oil-out two (15) is 46 millimeters.

3. The pressure regulating valve for a high power diesel engine oil system of claim 1, wherein: the side of the distribution block (1) is provided with four mounting threaded holes (17), and the specification of the mounting threaded holes (17) is G1/2.

4. The pressure regulating valve for a high power diesel engine oil system of claim 1, wherein: the inside of distribution piece (1) is seted up the draining passageway that link up with draining mouth (16), the side of distribution piece (1) is provided with the measurement screw hole that runs through to draining passageway, and measures the specification of screw hole and be G1/2, the internal thread of measuring the screw hole has cup jointed second plug screw (11), and the outside activity of second plug screw (11) has cup jointed second gasket (12).

5. The pressure regulating valve for a high power diesel engine oil system according to claim 1 or 4, characterized in that: the side of distribution piece (1) is provided with the inspection screw hole that runs through to draining the passageway, and the specification of inspection screw hole is M48, the internal thread of inspection screw hole has cup jointed first plug screw (7), and the outside activity of first plug screw (7) has cup jointed first gasket (8).

6. The pressure regulating valve for a high power diesel engine oil system of claim 1, wherein: the outer diameter value of the slide valve piston (2) is 70 mm, the material is HT250, and the free height of the spring (3) is 213 mm.

7. The pressure regulating valve for a high power diesel engine oil system of claim 1, wherein: the top of blind flange (4) is provided with four perforating holes, the middle part of blind flange (4) is provided with connecting screw hole, and connecting screw hole's specification is M18, the outside movable sleeve of blind flange (4) is equipped with adjusting shim (10) that are located distribution block (1) one end, adjusting shim (10) are the combination formula, and adjusting shim (10) thickness specification is 5 millimeters, 0.5 millimeter.

8. The pressure regulating valve for a high power diesel engine oil system of claim 1, wherein: and an O-shaped sealing ring (9) positioned in the distribution block (1) is movably sleeved outside the flange cover (4).

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