CN212615367U

CN212615367U - Performance test bench for screw compressor

Info

Publication number: CN212615367U
Application number: CN202021243578.7U
Authority: CN
Inventors: 刘永强; 童玉龙
Original assignee: Hangzhou Xingxin Technology Co ltd
Current assignee: Hangzhou Xingxin Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-26
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to a performance test board for a screw compressor, which comprises a motor rack, a compressor rack, a test system, a controller and a display device; the motor rack is in butt joint with the compressor rack, the testing system is connected with the motor rack, and the controller and the display device are in communication connection with the testing system; the motor rack comprises a motor rack base, a motor and a motor butt joint panel; the compressor rack comprises a traveling trolley, a host machine base and a host machine butt joint panel; the testing system comprises a set of first gas-liquid separation device, a set of first cooling device, a set of water cooling device, a reservoir, a gas storage device and a set of measuring device; the test bench has wide range of test machine types, and a pair of gas-liquid separation devices including rough separation and fine separation are added on the basis of the original test, so that the test bench can simultaneously test the compressor types using different lubricating oils.

Description

Performance test bench for screw compressor

Technical Field

The utility model relates to a compressor test field, specifically say, relate to a performance test platform for helical-lobe compressor.

Background

Screw compressors are divided into single-stage screw compressors and two-stage screw compressors. Most of the oil-injected screw compressors on the market lubricate and cool the rotor working at high speed through lubrication and cooling of oil, and the oil also plays a role in sealing. Compared with the common compressor, the compressor has the advantages of high energy efficiency, strong adaptability and high reliability, and is more and more widely applied, so that the performance test of the compressor has very important significance.

At present, certain defects still exist in performance tests of screw compressors, and are mainly reflected in test assembly and data acquisition of the compressors.

The existing test assembly still mainly uses manpower: firstly, operating a traveling crane to place a motor on a rack, and confirming and fixing the position of the motor by using a rack bolt hole; secondly, respectively installing a plum coupling on a motor shaft and a compressor shaft, then connecting the middle support with the compressor through a flange surface, and installing a torque meter; then, hoisting the compressor and the middle support by a crane, connecting the middle support with a motor flange surface, and meanwhile, completing the connection of the torque meter and the motor section plum coupling; and finally, centering and fixing the torque meter and the plum coupling. The method has high requirements on operators, and needs to finish the installation and the disassembly of the coupler, the torque meter and the middle support, thereby having high labor intensity and time consumption. When compressors of different models are tested, the used middle supports are different, so that the testing of various models means that various middle supports are needed, and the replacement is needed for many times, and the benefit and the installation are not practical; in addition, the connection of the oil-gas pipeline is required to be completed during test assembly, and the existing pipeline installation adopts the following method: and the oil-gas separation tank and the oil pipe are connected with the exhaust port and the oil inlet of the compressor through the flange surface by the long hose. The metal hose is heavy and not easy to bend, and needs to be disassembled and replaced after one-time test, which is time-consuming and labor-consuming for operators. A compressor is typically tested with an installation time of around 2 hours and cannot be assembled and disassembled during testing.

In the performance test of the compressor, the data is acquired by adopting a field observation and recording mode. The pressure difference is measured by a U-shaped water column meter, the pressure is measured by a pressure transmitter or a pressure gauge, and the temperature is measured by a temperature transmitter or a mercury thermometer. The U-shaped water column meter, the pressure meter and the mercury thermometer are manually observed and recorded, and water needs to be replaced and cleaned during the water column meter period; the pressure transmitter and the temperature transmitter are connected with the workbench to perform simple LED data display. The meter can only simply measure data, and subsequent data statistics, calculation and analysis, such as specific power, and the like, need to be additionally processed, are time-consuming and labor-consuming, and cannot obtain more effective data.

Therefore, there is a need for improvements and optimizations to existing compressor performance testing equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a performance test platform for helical-lobe compressor that structural design is reasonable, and performance test platform has fast butt joint, the line rolls off the production line and goes up multiple functions such as helical-lobe compressor, remote control monitoring, data acquisition analysis, lubricating oil recovery of simultaneous working, being suitable for multiple model, and the suitability is strong, the butt joint is convenient, oil saving, labour saving and time saving.

The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a performance test platform for helical-lobe compressor which characterized in that: the testing system comprises a motor rack, a compressor rack, a testing system, a controller and a display device; the motor rack is in butt joint with the compressor rack, the test system is connected with the motor rack, and the controller and the display device are in communication connection with the test system; the motor rack comprises a motor rack base, a motor and a motor butt joint panel; the motor is arranged on the base of the motor rack; the motor butt joint panel is vertically arranged and is installed at one end of the motor rack base; the motor butt joint panel is provided with a gas claw, a positioning pin, at least one gas pipe quick joint and an oil pipe quick joint; the compressor rack comprises a traveling trolley, a host machine base and a host machine butt joint panel; the main machine base is used for installing and placing a compressor and can be horizontally and movably arranged on the traveling trolley; the host machine butt joint panel is vertically arranged and connected to one end of the host machine base; the host butt joint panel is provided with a clamping pin, a shaft sleeve, at least one air pipe quick joint and an oil return quick joint; when the motor rack is butted with the compressor rack, the motor butting panel faces the host butting panel, the air claw is clamped with the clamping pin, the positioning pin is inserted into the shaft sleeve, the air pipe quick connector is in quick butt joint with the air pipe, and the oil pipe quick connector is in quick butt joint with the return oil; the testing system comprises a set of first gas-liquid separation device, a set of first cooling device, a set of water cooling device, a reservoir, a gas storage device and a set of measuring device; the first gas-liquid separation device comprises a first fine separation barrel and a first coarse separation barrel, the first fine separation barrel and the first coarse separation barrel are connected in series, the outlet end of the first fine separation barrel is connected to the inlet end of the gas storage device through a pipeline, and a first valve and a second valve are mounted on the pipeline; the outlet end of the gas storage device is communicated with the external atmosphere through a pipeline, and a third valve, a measuring device and a fourth valve are sequentially arranged on the pipeline according to the airflow direction; the inlet end of the first coarse separating cylinder is connected with a first air inlet pipeline; a liquid outlet at the bottom of the first coarse separating cylinder is connected with an oil inlet of the first cooling device through a pipeline, and a fifth valve, a first pump and a sixth valve are sequentially arranged on the pipeline according to the liquid flowing direction; the outlet end of the first cooling device is connected with a first oil return pipeline, and a first filtering device and a seventh valve are sequentially arranged on the first oil return pipeline according to the liquid flowing direction; the water cooling device is used for cooling the first cooling device by water, and is connected with the reservoir and arranged on the reservoir; the water outlet of the first cooling device is communicated with the water cooling device through a pipeline; the outlet end of the reservoir is connected with the water inlet of the first cooling device through a pipeline, and a second pump is arranged on the pipeline; when the test system is connected with the motor rack, the end part of the first air inlet pipeline is in butt joint with the air pipe quick joint, and the end part of the first oil return pipeline is in butt joint with the oil pipe quick joint.

Preferably, the gas claw, the locating pin, the clamping pin and the shaft sleeve are all provided with two.

Preferably, an oil collecting box is installed at the bottom of one side of the motor butt joint panel and is located below the oil pipe quick connector.

Preferably, the motor is mounted on a motor base, which is fixed to the motor stand base.

Preferably, the four corners of the bottom of the base of the motor rack are provided with fixing feet.

Preferably, the output end of the motor is connected with a transmission shaft, the end part of the transmission shaft is provided with a coupler, and a torque meter centering plate is arranged below the transmission shaft and the coupler.

Preferably, the main machine base is arranged on the traveling trolley through a guide rail in a horizontally movable manner; the two guide rails are arranged and are arranged on the travelling trolley in parallel; wheels are arranged at the bottom of the travelling trolley.

Preferably, a through hole for a driving shaft of the screw compressor to pass through is reserved on the host machine butt joint panel, and when the motor rack is in butt joint with the compressor rack, the driving shaft of the screw compressor passes through the through hole and then is connected with the transmission shaft through a coupler.

Preferably, the test system further comprises a set of second gas-liquid separation device and a set of second cooling device; the second gas-liquid separation device comprises a second fine separation barrel and a second coarse separation barrel, the second fine separation barrel is connected with the second coarse separation barrel in series, and a pipeline connected with the outlet end of the first fine separation barrel is communicated with the outlet end of the second fine separation barrel, so that the outlet end of the second fine separation barrel is communicated with the inlet end of the gas storage device; the inlet end of the second coarse separator is connected with a second air inlet pipeline; a liquid outlet at the bottom of the second coarse separation cylinder is connected with an oil inlet of the second cooling device through a pipeline, and an eighth valve, a third pump and a ninth valve are sequentially arranged on the pipeline according to the liquid flowing direction; the outlet end of the second cooling device is connected with a second oil return pipeline, and a second filtering device and a tenth valve are sequentially arranged on the second oil return pipeline according to the liquid flowing direction; the water outlet of the second cooling device is communicated with the water cooling device through a pipeline; and the water inlet of the second cooling device is communicated with the second pump.

Preferably, two air pipe quick connectors and two oil pipe quick connectors are respectively installed on the motor butt joint panel; correspondingly, two air pipe quick connections and two oil return quick connections are also respectively arranged on the host machine butt joint panel; one air pipe quick connector is used for being in butt joint with the first air inlet pipeline, and the other air pipe quick connector is used for being in butt joint with the second air inlet pipeline; one oil pipe quick-operation joint is used for with the butt joint of oil return pipeline No. one, and another oil pipe quick-operation joint is used for with No. two oil return pipeline butt joints.

Preferably, the controller and the display device comprise a controller and a display screen, the controller is an upper computer, and the controller is in communication connection with the measuring device, all valves and all pumps in the test system and is used for acquiring data; the display screen is a touch screen and is used for displaying data processed by the controller, storing the data and generating a report, monitoring the state of the equipment in real time and feeding the state back to the upper computer for control and adjustment; in addition, automatic analysis and calculation of data, such as shaft power, can be realized.

Compared with the prior art, the utility model, have following advantage and effect:

1. and (3) quick centering: the rack is divided into two parts: the motor rack and the compressor rack adopt a mode of replacing a middle support with a positioning pin and a gas claw to realize quick centering of the racks;

2. and (3) rapid butt joint: the oil-gas pipeline is divided into two sections, one section is connected with the gas-liquid separation device and the oil pipe, the other section is connected with the compressor, and the oil-gas pipeline is quickly connected in a quick joint mode, so that the time and labor are saved, the quick joint has the characteristic of leakage prevention, the test environment can be tidier, and the physical and mental health of an operator is facilitated;

3. online and offline simultaneous operation: the motor rack and the compressor rack can be separated, the compressor rack can be added, the characteristics of online test and offline installation are realized, the test is uninterrupted, and the efficiency is improved;

4. remote control: the upper computer is connected with the actuating mechanism for remote control, such as a frequency converter, an adjusting valve and the like, so that system parameters are adjusted, and the device is convenient and labor-saving;

5. data are collected and automatically analyzed, the pressure, the differential pressure, the flow and the temperature of a measuring point are all in a sensor mode, an output signal line is connected with an upper computer and is displayed on a touch screen after being processed, and the functions of real-time equipment state monitoring, data collection and storage, data report generation and automatic analysis and calculation are realized;

6. the test bench has wide range of test machine types, and a pair of gas-liquid separation devices including rough separation and fine separation are added on the basis of the original test, so that the test bench can simultaneously test the compressor types using different lubricating oils.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic plan view of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a motor rack in an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a compressor rack in an embodiment of the present invention.

Fig. 4 is a schematic diagram of a connection relationship between devices of the test system according to an embodiment of the present invention.

Fig. 5 is a schematic view of a parameter setting interface in the controller and the display device according to the embodiment of the present invention.

Fig. 6 is a schematic view of an interface for adjusting a water pump in a controller and a display device according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a real-time data interface of a test system in a controller and a display device according to an embodiment of the present invention.

Description of reference numerals:

a motor stand 1; a compressor rack 2; a test system 3; a controller and display device 4;

a motor stand base 11; a motor 12; a motor docking panel 13; a gas claw 14; a positioning pin 15; a tubing quick connector 16; a quick air pipe joint 17; an oil collection box 18; a motor base 19; a fixing leg 110; a transmission shaft 111; a shaft coupling 112; a torque meter centering plate 113;

a traveling carriage 21; a host base 22; a host docking panel 23; a clamp pin 24; a shaft sleeve 25; a trachea quick connector 26; an oil return quick connector 27; a guide rail 28; a wheel 29; a through-hole 210;

a second valve 30; a valve number five 31; a pump number one 32; a number six valve 33; cooling device number one 34; a first filter device 35; valve number eleven 36; valve number eight 37; a pump number three 38; a valve number nine 39; a second fine separation cylinder 310; a second rough cylinder 311; a first fine separator 312; a first rough cylinder 313; a first valve 314; a second pump 315; a water reservoir 316; a water cooling device 317; a gas storage 318; filter device number two 319; cooling device number two 320; a twelve-gauge valve 321; a ten-way valve 322; a seventh valve 323; a third valve 324; a measuring device 325; a number four valve 326;

a second air inlet pipeline a; a first air inlet pipeline b; a second oil return pipeline c; and a first oil return pipeline d.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Examples are given.

See fig. 1-7.

The embodiment discloses a performance test bench for a screw compressor, which comprises a motor bench 1, a compressor bench 2, a test system 3 and a controller and display device 4. The motor rack 1 is in butt joint with the compressor rack 2, the testing system 3 is connected with the motor rack 1, and the controller and display device 4 is in communication connection with the testing system 3.

In this embodiment, the motor gantry 1 includes a motor gantry base 11, a motor 12, and a motor docking panel 13; the motor 12 is mounted on a motor mount 19, and the motor mount 19 is fixed to the motor stand base 11. The four corners of the bottom of the motor stand base 11 are provided with fixing feet 110. The motor stand base 11 is fixed to the ground or other platform by fixing legs 110. The motor butt joint panel 13 is vertically arranged and is installed at one end of the motor rack base 11; two air claws 14, two positioning pins 15, two air pipe quick connectors 17 and two oil pipe quick connectors 16 are arranged on the motor butt joint panel 13.

In this embodiment, an oil collecting box 18 is installed at the bottom of one side of the motor butt-joint panel 13, and the oil collecting box 18 is located below the oil pipe quick connector 16. The output end of the motor 12 is connected with a transmission shaft 111, the end of the transmission shaft 111 is provided with a coupler 112, and the lower surfaces of the transmission shaft 111 and the coupler 112 are provided with a torque meter centering plate 113.

In this embodiment, the compressor rack 2 includes a traveling trolley 21, a host base 22, and a host docking panel 23; the main machine base 22 is used for installing and placing a compressor, and is horizontally movably installed on the traveling trolley 21 through a guide rail 28, two guide rails 28 are arranged, and the two guide rails are installed on the traveling trolley 21 in parallel; wheels 29 are mounted on the bottom of the traveling carriage 21.

In this embodiment, the host docking panel 23 is vertically arranged and connected to one end of the host base 22; the host butt joint panel 23 is provided with two clamping pins 24, two shaft sleeves 25, two air pipe quick joints 26 and two oil return quick joints 27; when the motor rack 1 is in butt joint with the compressor rack 2, the motor butt joint panel 13 faces the host butt joint panel 23, the air claw 14 is clamped with the clamping pin 24, the positioning pin 15 is inserted into the shaft sleeve 25, the air pipe quick connector 17 is in butt joint with the air pipe quick connector 26, the oil pipe quick connector 16 is in butt joint with the oil return quick connector 27, and then quick butt joint of the motor rack and the compressor rack and butt joint of oil and gas pipes are achieved.

In this embodiment, a through hole 210 for passing the driving shaft of the screw compressor is reserved on the host docking panel 23, and when the motor rack 1 docks with the compressor rack 2, the driving shaft of the screw compressor passes through the through hole 210 and then is connected with the transmission shaft 111 through the coupling 112.

In this embodiment, the testing system 3 includes a set of first gas-liquid separation device, a set of second gas-liquid separation device, a set of first cooling device 34, a set of second cooling device 320, a set of water cooling device 317, a water reservoir 316, a gas storage device 318, and a set of measuring device 325.

In this embodiment, the first gas-liquid separation device includes a first fine separation cylinder 312 and a first coarse separation cylinder 313, the first fine separation cylinder 312 and the first coarse separation cylinder 313 are connected in series, an outlet end of the first fine separation cylinder 312 is connected to an inlet end of the gas storage device 318 through a pipeline, and the first valve 314 and the second valve 30 are installed on the pipeline. The outlet end of the gas storage device 318 is connected with the external atmosphere through a pipeline, and a third valve 324, a measuring device 325 and a fourth valve 326 are sequentially arranged on the pipeline according to the airflow direction.

In this embodiment, the second gas-liquid separation device includes a second fine separation cylinder 310 and a second coarse separation cylinder 311, the second fine separation cylinder 310 and the second coarse separation cylinder 311 are connected in series, and an outlet end of the second fine separation cylinder 310 is connected to a pipeline connected to an outlet end of the first fine separation cylinder 312, so that the outlet end of the second fine separation cylinder 310 is connected to an inlet end of the gas storage device 318.

The test bench is provided with two sets of gas-liquid separation devices, and is provided with four oil-gas separators, two oil-gas separators are used for rough separation of oil-gas mixtures, and two oil-gas separators are used for fine separation of the oil-gas mixtures, so that the test bench can test machine types using different lubricating oils while the efficiency of oil-gas separation is improved. The separation object of the gas-liquid separation device is an oil-gas mixture, and the gas storage device 318 is used for storing the gas separated by the two sets of gas-liquid separation devices.

In this embodiment, the inlet end of the first coarse separator 313 is connected with a first air inlet pipeline b; the inlet end of the second coarse separator 311 is connected with a second air inlet pipeline a.

In this embodiment, a liquid outlet at the bottom of the first rough cylinder 313 is connected to an oil inlet of the first cooling device 34 through a pipeline, and a fifth valve 31, a first pump 32, and a sixth valve 33 are sequentially installed on the pipeline according to the liquid flowing direction. The outlet end of the first cooling device 34 is connected with a first oil return pipeline d, and a first filtering device 35 and a seventh valve 323 are sequentially arranged on the first oil return pipeline d according to the liquid flowing direction.

In this embodiment, the water cooling device 317 is used for water cooling the first cooling device 34 and the second cooling device 320, the water cooling device 317 is connected with the reservoir 316, and the water cooling device 317 is installed above the reservoir 316; the water outlet of the first cooling device 34 is communicated with the water cooling device 317 through a pipeline; the outlet end of the water reservoir 316 is connected with the water inlet of the first cooling device 34 through a pipeline, a second pump 315 is arranged on the pipeline, and an eleventh valve 36 is arranged on the pipeline connected with the water inlet of the first cooling device 34.

In this embodiment, a liquid outlet at the bottom of the second rough cylinder 311 is connected to an oil inlet of the second cooling device 320 through a pipeline, and an eighth valve 37, a third pump 38 and a ninth valve 39 are sequentially installed on the pipeline according to the liquid flowing direction; the outlet end of the second cooling device 320 is connected with a second oil return pipeline c, and a second filtering device 319 and a tenth valve 322 are sequentially arranged on the second oil return pipeline c according to the liquid flowing direction; the water outlet of the second cooling device 320 is communicated with the water cooling device 317 through a pipeline; the water inlet of the second cooling device 320 is communicated with the second pump 315, and a twelfth valve 321 is arranged on a pipeline connected with the water inlet of the second cooling device 320.

In this embodiment, the first filtering device 35 and the second filtering device 319 are mainly used to ensure the quality of the oil return and the cleanliness of the air entering the compressor. The fifth valve 31 and the eighth valve 37 adopt gate valves, the sixth valve 33, the eleventh valve 36, the ninth valve 39 and the twelfth valve 321 adopt one-way valves, the third valve 324 adopts a regulating valve, and the fourth valve 326 adopts a pneumatic ball valve. The first pump 32 and the third pump 38 are oil pumps, the second pump 315 is a water pump, and a frequency converter is arranged at a pipeline section where the water pump is located and used for adjusting water flow so as to adapt to oil cooling temperature required by testing of various types.

In this embodiment, the measurement device 325 includes a pressure sensor, a temperature sensor, a differential pressure sensor, and a mass flow meter.

In the embodiment, when the test system 3 is connected with the motor rack 1, two air pipe quick connectors 17 and two oil pipe quick connectors 16 are respectively installed on the motor butt joint panel 13; one air pipe quick joint 17 is used for being in butt joint with the first air inlet pipeline b, and the other air pipe quick joint 17 is used for being in butt joint with the second air inlet pipeline a; one oil pipe quick joint 16 is used for being in butt joint with the first oil return pipeline d, and the other oil pipe quick joint 16 is used for being in butt joint with the second oil return pipeline c.

In this embodiment, the controller and display device 4 includes a controller and a display screen, and the controller is an upper computer and is mainly used for processing data acquired by the sensor and performing remote control and adjustment on the actuator. The controller is in communication connection with the measuring device 325 and all the valves and pumps in the test system 3 and is used for acquiring data; the display screen is a touch screen and is used for displaying data processed by the controller, storing the data and generating a report, monitoring the state of the equipment in real time and feeding the state back to the upper computer for control and adjustment; in addition, automatic analysis and calculation of data, such as shaft power, can be realized.

In this embodiment, the operation interface of the controller includes a system operation real-time data monitoring interface, a water pump adjustment interface, a flow measurement display interface, an equipment state display interface, a data acquisition interface, a to-be-tested compressor model selection interface, a to-be-tested compressor protection parameter setting interface, and a data generation interface, the data acquisition interface includes measured data and calculated data, the equipment monitoring includes a gas-liquid separation device, a pump, a gas storage device, a compressor, and the like, and the water pump adjustment mainly refers to adjustment of the frequency converter.

The performance test board adopts two parts to carry out quick butt joint, one part is a motor rack, the motor rack is fixed in the original position and is fixedly connected with a gas-liquid separation device through a quick connector, the other part is a compressor rack, after centering and fixing of a compressor and the rack and connection of the gas-liquid pipeline are completed offline, the compressor and the rack are moved through a travelling trolley, quick centering with the motor rack is completed under the action of a positioning pin and a gas claw, meanwhile, the oil-gas pipeline is quickly butted, an operator fastens bolts on a coupler, namely, centering of the compressor and a motor is completed, then, operation and control of an upper computer are carried out, a test machine type is selected, parameter setting is carried out, water flow and oil flow are adjusted, the test requirement is met, the motor can be started, states of all devices are monitored, and data are collected in real time. The compressor base can be many-to-one, so that the on-line test and the off-line installation can be simultaneously carried out, and the purpose of uninterrupted test is achieved; the upper computer remotely controls the execution mechanism, receives and processes data acquired by the sensor, and then displays the data on the touch screen, monitors the state of the equipment in real time, automatically analyzes and calculates, and generates a data report.

The test bench has wide range of test machine types, and a pair of gas-liquid separation devices including rough separation and fine separation are added on the basis of the original test, so that the test bench can simultaneously test the compressor types using different lubricating oils.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the patent idea of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a performance test platform for helical-lobe compressor which characterized in that: the testing system comprises a motor rack (1), a compressor rack (2), a testing system (3) and a controller and display device (4); the motor rack (1) is in butt joint with the compressor rack (2), the test system (3) is connected with the motor rack (1), and the controller and display device (4) is in communication connection with the test system (3);

the motor rack (1) comprises a motor rack base (11), a motor (12) and a motor butt joint panel (13); the motor (12) is arranged on the motor rack base (11); the motor butt joint panel (13) is vertically arranged and is installed at one end of the motor rack base (11); the motor butt joint panel (13) is provided with a gas claw (14), a positioning pin (15), at least one gas pipe quick joint (17) and an oil pipe quick joint (16);

the compressor rack (2) comprises a traveling trolley (21), a host machine base (22) and a host machine butt joint panel (23); the main machine base (22) is used for installing and placing a compressor and can be horizontally and movably arranged on the traveling trolley (21); the host docking panel (23) is vertically arranged and connected to one end of the host base (22); the host butt joint panel (23) is provided with a clamping pin (24), a shaft sleeve (25), at least one air pipe quick joint (26) and an oil return quick joint (27);

when the motor rack (1) is butted with the compressor rack (2), the motor butting panel (13) is opposite to the host butting panel (23), the air claw (14) is clamped with the clamping pin (24), the positioning pin (15) is inserted into the shaft sleeve (25), the air pipe quick joint (17) is butted with the air pipe quick joint (26), and the oil pipe quick joint (16) is butted with the oil return quick joint (27);

the testing system (3) comprises a set of first gas-liquid separation device, a set of first cooling device (34), a set of water cooling device (317), a water storage tank (316), a gas storage device (318) and a set of measuring device (325);

the first gas-liquid separation device comprises a first fine separation cylinder (312) and a first coarse separation cylinder (313), the first fine separation cylinder (312) and the first coarse separation cylinder (313) are connected in series,

the outlet end of the first fine separation cylinder (312) is connected to the inlet end of the gas storage device (318) through a pipeline, and a first valve (314) and a second valve (30) are mounted on the pipeline; the outlet end of the gas storage device (318) is communicated with the external atmosphere through a pipeline, and a third valve (324), a measuring device (325) and a fourth valve (326) are sequentially arranged on the pipeline according to the airflow direction;

the inlet end of the first coarse separating cylinder (313) is connected with a first air inlet pipeline (b);

a liquid outlet at the bottom of the first coarse separating cylinder (313) is connected with an oil inlet of the first cooling device (34) through a pipeline, and a fifth valve (31), a first pump (32) and a sixth valve (33) are sequentially arranged on the pipeline according to the liquid flowing direction; the outlet end of the first cooling device (34) is connected with a first oil return pipeline (d), and a first filtering device (35) and a seventh valve (323) are sequentially arranged on the first oil return pipeline (d) according to the liquid flowing direction;

the water cooling device (317) is used for water cooling the first cooling device (34), the water cooling device (317) is connected with the water storage tank (316), and the water cooling device (317) is arranged above the water storage tank (316); the water outlet of the first cooling device (34) is communicated with the water cooling device (317) through a pipeline; the outlet end of the water storage tank (316) is connected with the water inlet of the first cooling device (34) through a pipeline, and a second pump (315) is arranged on the pipeline;

when the test system (3) is connected with the motor rack (1), the end part of the first air inlet pipeline (b) is in butt joint with the air pipe quick joint (17), and the end part of the first oil return pipeline (d) is in butt joint with the oil pipe quick joint (16).

2. The performance test bench for screw compressors according to claim 1, characterized in that: the pneumatic claw (14), the positioning pin (15), the clamping pin (24) and the shaft sleeve (25) are all provided with two parts.

3. The performance test bench for screw compressors according to claim 1, characterized in that: an oil collecting box (18) is installed at the bottom of one side of the motor butt joint panel (13), and the oil collecting box (18) is located below the oil pipe quick joint (16).

4. The performance test bench for screw compressors according to claim 1, characterized in that: the motor (12) is mounted on a motor base (19), and the motor base (19) is fixed on the motor rack base (11).

5. The performance test bench for screw compressors according to claim 1, characterized in that: the four corners of the bottom of the motor rack base (11) are provided with fixing feet (110).

6. The performance test bench for screw compressors according to claim 1, characterized in that: the output end of the motor (12) is connected with a transmission shaft (111), the end part of the transmission shaft (111) is provided with a coupler (112), and a torque meter centering plate (113) is arranged below the transmission shaft (111) and the coupler (112).

7. The performance test bench for screw compressors according to claim 1, characterized in that: the main machine base (22) is horizontally movably arranged on the traveling trolley (21) through a guide rail (28); the two guide rails (28) are arranged and are arranged on the travelling trolley (21) in parallel; wheels (29) are arranged at the bottom of the travelling trolley (21).

8. A performance test bench for screw compressors according to claim 6, characterized in that: a through hole (210) for a driving shaft of the screw compressor to pass through is reserved on the host machine butt joint panel (23), and when the motor rack (1) is in butt joint with the compressor rack (2), the driving shaft of the screw compressor passes through the through hole (210) and then is connected with the transmission shaft (111) through the coupler (112).

9. The performance test bench for screw compressors according to claim 1, characterized in that: the test system (3) also comprises a set of second gas-liquid separation device and a set of second cooling device (320);

the second gas-liquid separation device comprises a second fine separation cylinder (310) and a second coarse separation cylinder (311), the second fine separation cylinder (310) is connected with the second coarse separation cylinder (311) in series, and a pipeline connected with the outlet end of the first fine separation cylinder (312) is communicated with the outlet end of the second fine separation cylinder (310), so that the outlet end of the second fine separation cylinder (310) is communicated with the inlet end of the gas storage device (318); the inlet end of the second coarse separator (311) is connected with a second air inlet pipeline (a);

a liquid outlet at the bottom of the second coarse separating cylinder (311) is connected with an oil inlet of the second cooling device (320) through a pipeline, and an eighth valve (37), a third pump (38) and a ninth valve (39) are sequentially arranged on the pipeline according to the liquid flowing direction; the outlet end of the second cooling device (320) is connected with a second oil return pipeline (c), and a second filtering device (319) and a tenth valve (322) are sequentially arranged on the second oil return pipeline (c) according to the liquid flowing direction; the water outlet of the second cooling device (320) is communicated with the water cooling device (317) through a pipeline; the water inlet of the second cooling device (320) is communicated with the second pump (315).

10. A performance test bench for a screw compressor according to claim 9, characterized in that: two air pipe quick connectors (17) and two oil pipe quick connectors (16) are respectively arranged on the motor butt joint panel (13); correspondingly, two air pipe quick connectors (26) and two oil return quick connectors (27) are also arranged on the host machine butt joint panel (23) respectively; one air pipe quick joint (17) is used for being butted with the first air inlet pipeline (b), and the other air pipe quick joint (17) is used for being butted with the second air inlet pipeline (a); one oil pipe quick joint (16) is used for being in butt joint with the first oil return pipeline (d), and the other oil pipe quick joint (16) is used for being in butt joint with the second oil return pipeline (c);

and/or;

the controller and display device (4) comprises a controller and a display screen, the controller is in communication connection with the measuring device (325) in the test system (3) and all the valves and pumps and is used for acquiring data, and the display screen is used for displaying data.