The pipe-line system of screw air compressorTechnical field
The utility model is related to screw air compressor, more particularly to a kind of pipe-line system of screw air compressor.
Background technology
Screw air compressor essential structure：In the body of compressor, a pair of intermeshing spiralitys are abreast configuredRotor, generally the rotor outside pitch circle with double wedge, referred to as male rotor or positive screw rod.The rotor in pitch circle with concave tooth, claimFor female rotor or female screw, general male rotor is connected with prime mover, and last on female rotor rotation rotor is driven by male rotorAxially position is realized to bearing, and bears the axial force in compressor.The cylinder roller bearing of two ends of rotor makes rotor realize footpathTo positioning, and bear the radial load in compressor.At the two ends of compressor block, the hole of definite shape and size is opened up respectivelyMouthful.One for air-breathing, referred to as air inlet;Another supply and discharge gas is used, referred to as exhaust outlet.
In existing screw air compressor, its pipe-line system includes oil circuit and gas circuit, due to the operation of whole air compressor machineIn, the temperature rapid increase that oil can be caused gentle, thus, it is necessary to gentle to oil in pipeline carry out certain cooling treatment,Existing cooling way is mostly air-cooled, and it e insufficient to the demand for meeting screw air compressor.
Utility model content
In order to solve above-mentioned technical problem, the utility model provides a kind of pipe-line system of screw air compressor,The screw-rod air compressor includes pneumatics main frame, gas extraction system, injection system and oil and gas separating system, and the pipe-line system includesIt is connected to the discharge pipe for entering air pipe, the connection air compressor host and oil and gas separating system of the air compressor host air intakeRoad, the outlet line of the oily outlet of the connection oil and gas separating system, connect going out for the oil and gas separating system gas outletAir pipe, and the oil inlet of the connection injection system and air compressor host enter oil pipe line；
It is described enter air pipe, outlet pipe and outlet line be respectively connected to First Heat Exchanger, the second heat exchanger and the 3rdThe entrance and exit of first side of heat exchanger, the second side of the First Heat Exchanger, the second heat exchanger and the 3rd heat exchanger entersMouth connection cooling pond.
Optionally, the first valve is provided between the cooling pond and First Heat Exchanger, the cooling pond is changed with secondThe second valve is provided between hot device, the 3rd valve, first valve, the are provided between the cooling pond and the 3rd heat exchangerTwo valves and the 3rd valve are controlled by a controller.
Optionally, it is described enter air pipe, outlet pipe and outlet line on be respectively equipped with the first temperature sensor, describedController described in one temperature sensor direct or indirect connection, so that the controller can be passed according to first temperatureThe testing result of sensor controls the keying of first valve, the second valve and the 3rd valve.
Optionally, the signal output port of three first temperature sensors connects the input of a first comparator respectivelyEnd, another input of the first comparator inputs default reference voltage, the output end connection institute of the first comparatorState controller.
Optionally, the outlet of the second side of the First Heat Exchanger, the second heat exchanger and the 3rd heat exchanger connects one respectivelyThe water inlet of two-position three-way valve, the another two port of the two-position three-way valve connects the recovery port and storage of the cooling pond respectivelyHot-tub, the two-position three-way valve is controlled by a controller, so that the water after heat exchange is reached into the thermal storage tank or cooling waterPond.
Optionally, the outlet of the second side of the First Heat Exchanger, the second heat exchanger and the 3rd heat exchanger with described twoSecond temperature sensor, control described in the second temperature sensor direct or indirect connection are further respectively had between triple valveDevice, so that the controller can control the two-position three-way valve according to the testing result of the second temperature sensorCommunicating position, so that the water after heat exchange is reached into the thermal storage tank or cooling pond.
Optionally, the signal output port of three second temperature sensors connects the input of one second comparator respectivelyEnd, another input of second comparator inputs default reference voltage, the output end connection institute of second comparatorState controller.
Heat exchanger is incorporated into screw air compressor by the utility model, and discharge oil is realized using the heat exchange between cooling waterGentle cooling, furthermore, it is understood that the utility model is thought, in order to meet the cooling of integrated environment, it is not possible to only in drainageOil ring section carries out heat exchange cooling, and this means should also be applied to the input element in oil gas, further from the beginning deepen the effect of coolingReally.
In further alternative, whether the utility model is also further by temperature detection with carrying out this pair of passes of heat exchangeSystem has been applied in practice, and the automation of Valve controlling is realized by the introducing of the first temperature sensor and controller.
In further alternative, the cooling water after the also further heat exchanging of the utility model further shouldWith under the introducing of two-position three-way valve and second temperature sensor, the water that can be up to temperature requirement is discharged into heat storage water tank, willThe water of not up to temperature requirement sends cooling pond back to.So as to reach rational recycling.
Brief description of the drawings
Fig. 1 is the schematic diagram of the pipe-line system of screw air compressor in the alternative embodiment of the utility model one；
Fig. 2 is the control schematic diagram of the pipe-line system of screw air compressor in the alternative embodiment of the utility model one；
In figure, 1- First Heat Exchangers；The heat exchangers of 2- second；The heat exchangers of 3- the 3rd；4- enters air pipe；5- outlet pipes；6-Outlet line；7- enters oil pipe line；The valves of 8- first；The valves of 9- second；The valves of 10- the 3rd；The temperature sensors of 11- first；12-Two temperature sensors；13- two-position three-way valves；14- discharge lines.
Embodiment
Pipe-line system below with reference to Fig. 1 and Fig. 2 screw air compressors provided the utility model carries out detailed retouchState, its be the utility model optional embodiment, it is believed that those skilled in the art do not change the utility model spirit andIn the range of content, it can be modified and polished.
The utility model provides a kind of pipe-line system of screw air compressor, and the screw-rod air compressor includes pneumatics masterMachine, gas extraction system, injection system and oil and gas separating system, the pipe-line system include being connected to the air compressor host air intakeEnter air pipe 4, the discharge line 14 of the connection air compressor host and oil and gas separating system, connect the oil and gas separating systemThe outlet line 6 of oily outlet, the outlet pipe 5 of the connection oil and gas separating system gas outlet, and connect the sprayThe oil inlet of oil system and air compressor host enters oil pipe line 7；
It is described enter air pipe 4, outlet pipe 5 and outlet line 6 be respectively connected to First Heat Exchanger 1, the and of the second heat exchanger 2The entrance and exit of first side of the 3rd heat exchanger 3, the First Heat Exchanger 1, the of the second heat exchanger 2 and the 3rd heat exchanger 3The entrance connection cooling pond of two sides.
In optional embodiment of the present invention, the first valve 8 is provided between the cooling pond and First Heat Exchanger 1, it is describedThe second valve 9 is provided between cooling pond and the second heat exchanger 2, the 3rd is provided between the cooling pond and the 3rd heat exchanger 3Valve 10, first valve 8, the second valve 9 and the 3rd valve 10 are controlled by a controller.Certainly, here only it is signalValve, it is intended that expression control break-make, in actual application, can also specifically be provided with pump, such as, each valve concatenation oneIndividual water pump, to realize the supply of cooling water.
In further alternative embodiment, it is described enter air pipe 4, outlet pipe 5 and outlet line 6 on be respectively equipped with firstTemperature sensor 11, controller described in the direct or indirect connection of the first temperature sensor 11, so that the controllerFirst valve 8, the second valve 9 and the 3rd valve 10 can be controlled according to the testing result of first temperature sensor 11Keying.
Feedback and control for how to realize testing result, in further alternative embodiment, three first temperatureThe signal output port of degree sensor 11 connects the input of a first comparator, another input of the first comparator respectivelyThe default reference voltage of end input, the output end of the first comparator connects the controller.Certainly, this describes not flowDescription, but a kind of feature to comparator and temperature sensor type selecting and annexation is illustrated, temperature sensor selectionFor exportable analog quantity, the reference voltage inputted can be realized by the resistance size variation of the variable resistor of series connection.
It can be seen that, the utility model also further by temperature detection with whether carry out exchange heat this pair of relations be applied to practiceIn, the automation of Valve controlling is realized by the introducing of the first temperature sensor 11 and controller.
In the embodiment of the utility model Fig. 1 signals, the First Heat Exchanger 1, the second heat exchanger 2 and the 3rd heat exchanger 3The outlet of the second side connect the water inlet of a two-position three-way valve 13, the another two port difference of the two-position three-way valve 13 respectivelyRecovery port and the thermal storage tank of the cooling pond are connected, the two-position three-way valve 13 is controlled by a controller, so that after exchanging heatWater reach the thermal storage tank or cooling pond.
Furthermore, it is understood that in order to realize automatically controlling for three two-way valves, the utility model alternative is further designedIt is as follows：The outlet of second side of the First Heat Exchanger 1, the second heat exchanger 2 and the 3rd heat exchanger 3 and the two-position three-way valve 13Between further respectively have second temperature sensor 12, controller described in the direct or indirect connection of second temperature sensor 12,So that the controller can control the two-position three-way valve 13 according to the testing result of the second temperature sensor 12Communicating position, so that the water after heat exchange is reached into the thermal storage tank or cooling pond.For example, passed with the first temperatureThe application mode of sensor 11 is similar, and the signal output port of three second temperature sensors 12 connects one second and compared respectivelyThe input of device, another input of second comparator inputs default reference voltage, the output of second comparatorThe end connection controller.
In further alternative, the cooling water after the also further heat exchanging of the utility model further shouldWith under the introducing of two-position three-way valve 13 and second temperature sensor 12, the water that can be up to temperature requirement is discharged into water storageCase, sends the water of not up to temperature requirement back to cooling pond.So as to reach rational recycling.
In summary, heat exchanger is incorporated into screw air compressor by the utility model, utilizes the heat exchange between cooling waterThe gentle cooling of discharge oil is realized, furthermore, it is understood that the utility model is thought, in order to meet the cooling of integrated environment, it is not possible toHeat exchange cooling only is carried out in drainage link, this means should also be applied to the input element in oil gas, further from head depthChange the effect of cooling.