CN214092278U - Compressor test system - Google Patents

Abstract

The application discloses compressor test system relates to compressor technical field. The compressor testing system comprises a compressor access station and at least two pressure regulating assemblies; the compressor access station is sequentially connected with the at least two pressure regulating assemblies in series, and the compressor access station and the at least two pressure regulating assemblies form a circulation loop; the compressor access station is used for connecting a compressor to be tested, wherein one end of the compressor access station, which is connected with the output end of the compressor to be tested, is a compressor access station output end, and one end of the compressor access station, which is connected with the input end of the compressor to be tested, is a compressor access station input end; the voltage regulating component comprises a voltage reducing branch and a constant voltage branch which are arranged in parallel, and the voltage reducing branch and the constant voltage branch are alternatively switched on. The application provides a compressor test system is applicable in the test of the compressor that awaits measuring of multiple compression ratio.

Description

Compressor test system

Technical Field

The application relates to the technical field of compressors, in particular to a compressor testing system.

Background

In the hydrogen station, a high-pressure hydrogen compressor is one of the most important devices, and the performance and the service life of the high-pressure hydrogen compressor greatly influence the operation cost of the hydrogen station.

However, the compressor performance test system in the prior art has poor universality and cannot realize the service life test of the compressor.

SUMMERY OF THE UTILITY MODEL

The application provides a compressor test system to make compressor test system be applicable to the performance and the life-span test of the compressor that awaits measuring of different compression ratios.

In order to solve the above problems, the present application provides:

a compressor test system comprises a compressor access station and at least two pressure regulating assemblies;

the compressor access station is sequentially connected with the at least two pressure regulating assemblies in series, and the compressor access station and the at least two pressure regulating assemblies form a circulation loop; the compressor access station is used for connecting a compressor to be tested, wherein one end of the compressor access station, which is connected with the output end of the compressor to be tested, is a compressor access station output end, and one end of the compressor access station, which is connected with the input end of the compressor to be tested, is a compressor access station input end;

the voltage regulating assembly comprises a voltage reducing branch and a constant voltage branch which are arranged in parallel, and the voltage reducing branch and the constant voltage branch are alternatively switched on.

In a possible implementation mode, the voltage regulating assemblies are provided with three groups, and the three groups of voltage regulating assemblies are sequentially connected in series.

In a possible implementation manner, the pressure reducing branch comprises a pressure reducing valve, a first manual isolation valve and a second manual isolation valve, the first manual isolation valve and the second manual isolation valve are respectively arranged at two ends of the pressure reducing valve, and the first manual isolation valve and the second manual isolation valve are used for controlling the on-off of the pressure reducing branch.

In a possible embodiment, both ends of any pressure regulating assembly are connected with pressure containers.

In a possible embodiment, a first pneumatic isolation valve is connected between the output end of the compressor connecting station and the adjacent pressure container.

In a possible embodiment, a third manual isolation valve is connected between the output end of the compressor access station and one of the pressure containers adjacent to the output end of the compressor access station;

the compressor is connected to the same end of the station output end and the pressure container, and the other end of the third manual isolation valve is used for being communicated with a bleeding pipeline.

In a possible embodiment, a second pneumatic isolating valve is connected between the compressor access station input end and the compressor access station output end; the second pneumatic isolation valve is connected with the at least two pressure regulating assemblies in parallel.

In a possible implementation mode, a medium source is connected to the input end of the compressor access station, and a fourth manual isolation valve and a first one-way valve are sequentially connected in series between the medium source and the compressor access station.

In a possible embodiment, the compressor access station input end is further connected with a filter, and the filter is used for filtering media entering the compressor to be tested.

In one possible embodiment, the compressor access station is further connected with a safety protection assembly;

the safety shield assembly is configured to pressure bleed the recirculation loop when the pressure in the recirculation loop exceeds a safety pressure.

The beneficial effect of this application is: the application provides a compressor test system, including compressor access station and two at least pressure regulating subassemblies. Wherein, compressor access station and two at least pressure regulating subassembly are in proper order series connection, and form circulation circuit. The voltage regulating component comprises a voltage reducing branch and a constant voltage branch which are arranged in parallel, and the voltage reducing branch and the constant voltage branch are alternatively switched on.

When the pressure regulating device is used, a user can select to connect the pressure reducing branch or the constant pressure branch in each pressure regulating component according to the compression ratio of the compressor to be measured, so that primary pressure reduction or secondary pressure reduction and the like in the circulating loop are realized. Therefore, the compressor testing system can be suitable for testing more compressors to be tested with different compression ratios, and the universality of the compressor testing system is improved. Meanwhile, a circulation loop is formed between the compressor access station and the at least two pressure regulating assemblies, so that the compressor testing system can perform long-time circulation operation by using a certain amount of medium, and can be used for testing the service life of the compressor to be tested.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic diagram of a compressor test system;

FIG. 2 is a schematic diagram of a first voltage regulator assembly;

FIG. 3 shows a schematic structural diagram of another compressor testing system;

fig. 4 shows a schematic flow chart of a compressor testing system.

Description of the main element symbols:

1-a compressor is connected into a station; 2-a second pneumatic isolation valve; 3-a relief assembly; 301-a third pneumatic isolation valve; 302-a throttle valve; 4-a safety shield assembly; 401-a first relief valve; 402-a second safety valve; 5-a cooler; 6-a first pneumatic isolation valve; 7-a second one-way valve; 8-a fifth manual isolation valve; 9-a third manual isolation valve; 10-a first pressure vessel; 11-a second pressure vessel; 12-a third pressure vessel; 13-a fourth pressure vessel; 1401-a first voltage regulation component; 14011-a voltage reduction branch; 14011 a-pressure relief valve; 14011 b-a first manual isolation valve; 14011 c-a second manual isolation valve; 14012-constant voltage branch; 14012 a-a sixth manual isolation valve; 1402-a second voltage regulating assembly; 1403-a third voltage regulation component; 15-a fourth pneumatic isolation valve; 16-a filter; 17-a mass flow meter; 18-a fourth manual isolation valve; 19-a first one-way valve; 20-a first temperature transmitter; 21-a second temperature transmitter; 22-a sixth pressure transmitter; 23-a first pressure transmitter; 24-a second pressure transmitter; 25-a third pressure transmitter; 26-a fourth pressure transmitter; 27-a fourth temperature transmitter; 28-a fifth pressure transmitter; 29-a source of media; 30-outlet of the diffusing pipe; 31-compressor under test.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Embodiments provide a compressor test system, which can be used for testing the performance and the service life of a compressor.

As shown in fig. 1, the compressor testing system includes a compressor access station 1 and at least two pressure regulating assemblies.

The compressor access station 1 is used for connecting an input end and an output end of a compressor 31 to be tested. Therefore, the compressor 31 to be tested is connected into the compressor testing system, so that the performance and the service life of the compressor 31 to be tested can be tested. The end of the compressor access station 1 connected with the input end of the compressor 31 to be tested is the input end of the compressor access station, and the end of the compressor access station 1 connected with the output end of the compressor 31 to be tested is the output end of the compressor access station.

The compressor access station 1 and the at least two pressure regulating assemblies are sequentially connected in series to form a circulation loop. Specifically, after the output end of the compressor access station is sequentially connected with the at least two pressure regulating assemblies in series, one end, far away from the output end of the compressor access station, of the at least two pressure regulating assemblies is connected back to the input end of the compressor access station.

Any voltage regulating component comprises a voltage reducing branch 14011 and a constant voltage branch 14012 which are arranged in parallel, and one of the voltage reducing branch 14011 and the constant voltage branch 14012 is switched on. In use, an operator can selectively turn on the voltage reducing branch 14011 or the constant voltage branch 14012 in any voltage regulating assembly according to needs, thereby realizing primary voltage reduction or secondary voltage reduction and the like. Specifically, the switching-on can be performed selectively according to the compression ratio of the compressor 31 to be measured, so that the pressure reduction range of the at least two pressure regulating assemblies does not exceed the critical pressure ratio.

In summary, the compressor test system provided by the application can be applied to the performance and service life test of the compressor 31 to be tested with different compression ratios, and has higher universality.

Example two

The embodiment provides a compressor test system which can be used for testing the performance and the service life of a high-pressure positive displacement compressor in a hydrogenation station. Wherein the compressor is used for the pair H₂And performing compression and pressurization treatment. It is understood that the present embodiment is a further improvement on the first embodiment.

As shown in fig. 1, in the present embodiment, three groups of voltage regulating assemblies are provided, that is, a first voltage regulating assembly 1401, a second voltage regulating assembly 1402 and a third voltage regulating assembly 1403 are provided, and the first voltage regulating assembly 1401, the second voltage regulating assembly 1402 and the third voltage regulating assembly 1403 are sequentially connected in series. The input end of the first pressure regulating component 1401 is communicated to the output end of the compressor access station, and the output end of the third pressure regulating component 1403 is communicated to the input end of the compressor access station.

The three voltage regulation assemblies have the same structure, and a specific structure of the first voltage regulation assembly 1401 is described as an example.

As shown in fig. 2, the first voltage regulating assembly 1401 includes a voltage decreasing branch 14011 and a constant voltage branch 14012, and the voltage decreasing branch 14011 and the constant voltage branch 14012 are connected in parallel.

The pressure reducing branch 14011 includes a pressure reducing valve 14011a, a first manual isolation valve 14011b and a second manual isolation valve 14011 c. The first manual isolation valve 14011b, the pressure reducing valve 14011a and the second manual isolation valve 14011c are connected in series in this order. The end of the first manual isolation valve 14011b remote from the pressure reducing valve 14011a is connected to the output end of the compressor access station, and the end of the second manual isolation valve 14011c remote from the pressure reducing valve 14011a is connected to the input end of the second pressure regulating assembly 1402. The first manual isolation valve 14011b and the second manual isolation valve 14011c can control the on/off of the pressure reducing branch 14011. It will be appreciated that when both the first manual isolation valve 14011b and the second manual isolation valve 14011c are open, the medium can be delivered backwards after being depressurized by the relief valve 14011 a.

The constant pressure branch 14012 includes a sixth manual isolation valve 14012a, and the sixth manual isolation valve 14012a is used for controlling the on/off of the constant pressure branch 14012. The input and output terminals of the constant voltage branch 14012 have the same voltage value.

In one embodiment, the voltage reducing branch 14011 and the constant voltage branch 14012 are alternatively turned on. Specifically, when the voltage decreasing branch 14011 is turned on, the constant voltage branch 14012 is turned off, and the medium flows to the next stage through the voltage decreasing branch 14011, thereby achieving voltage decreasing adjustment. When the constant voltage branch 14012 is on, the voltage decreasing branch 14011 is off, and the medium flows to the next stage through the constant voltage branch 14012, and constant voltage regulation is realized.

In an embodiment, the pressure reducing valve 14011a with a proper pressure withstanding value and a proper pressure adjusting range can be selected according to the output pressure of the compressor 31 to be tested, so as to meet the working requirement of the compressor testing system and avoid safety accidents. The inlet pressure grades of the three groups of pressure reducing valves are preferably set according to the highest outlet pressure grade of the compressor, the outlet pressure grades of the three groups of pressure reducing valves can be selectively set according to the outlet pressure which is not lower than the critical state when the maximum pressure ratio is achieved, and the outlet pressure grades of the three groups of pressure reducing valves can be sequentially decreased.

The working principle of the second voltage regulating assembly 1402 and the third voltage regulating assembly 1403 is the same as that of the first voltage regulating assembly 1401, and the description thereof is omitted.

In use, an operator can selectively switch on the corresponding voltage reduction branch 14011 or constant voltage branch 14012 in the first voltage regulating assembly 1401, the second voltage regulating assembly 1402 and the third voltage regulating assembly 1403 according to requirements, so that primary voltage reduction, secondary voltage reduction or tertiary voltage reduction of the pressure in the circulating loop can be realized. Specifically, the setting may be performed according to the compression ratio of the compressor 31 to be measured. For example, when the compression ratio of the compressor 31 to be measured is small, a one-stage pressure reduction adjustment may be set; when the compression ratio of the compressor 31 to be measured is large, two-stage pressure reduction adjustment or three-stage pressure reduction adjustment may be set. Therefore, the compressor testing system can be suitable for performance testing and service life testing of the compressor 31 to be tested with different compression ratios.

Meanwhile, an operator can adjust the output pressure of each stage of the pressure reducing valve according to the working condition requirement of the compressor 31 to be measured, and under the cooperation effect of the plurality of groups of pressure reducing valves, stepless adjustment in a wider range can be realized, namely stepless adjustment of the input pressure of the compressor 31 to be measured. Accordingly, a wider range of stepless regulation of the output pressure of the compressor 31 to be measured can be achieved.

In other embodiments, as shown in fig. 3, the voltage regulating assemblies can be arranged in two groups, and the operator can select one-step voltage reduction or two-step voltage reduction according to the requirement.

Of course, in other embodiments, the voltage regulating assemblies may be arranged in other numbers such as four groups, five groups, etc., and multiple groups of voltage regulating assemblies are connected in series in sequence.

In the embodiment shown in fig. 1, both ends of any pressure regulating assembly are connected with pressure vessels. Specifically, the input end of the first pressure regulating assembly 1401 is connected with a first pressure vessel 10, a second pressure vessel 11 is connected between the first pressure regulating assembly 1401 and the second pressure regulating assembly 1402, a third pressure vessel 12 is connected between the second pressure regulating assembly 1402 and the third pressure regulating assembly 1403, and the output end of the third pressure regulating assembly 1403 is connected with a fourth pressure vessel 13. And a mass flow meter 17 is also connected in series between the second pressure regulating assembly 1402 and the third pressure regulating assembly 1403, and the mass flow meter 17 is used for detecting the quality of the process medium in the compressor testing system. The pressure container is used for storing a process medium flowing in the compressor testing system, so that pressure flow pulsation of the process medium is reduced, and testing accuracy of the mass flowmeter 17 is guaranteed.

Of course, in other embodiments, the mass flow meter 17 may be disposed at other locations in the recirculation loop.

Further, a first pneumatic isolation valve 6 is connected in series between the output end of the compressor access station and the first pressure container 10. Thus, at shutdown of the compressor test system, the process medium communication between the compressor 31 under test and the first pressure vessel 10 can be blocked by the first pneumatic isolation valve 6.

A fifth manual isolation valve 8 is also connected in series between the first pneumatic isolation valve 6 and the first pressure vessel 10. The fifth manual isolation valve 8 may be used as a backup valve. When the first pneumatic isolating valve 6 fails, the process medium communication between the compressor 31 under test and the first pressure vessel 10 can be interrupted by closing the fifth manual isolating valve 8. Meanwhile, when the compressor test system is not used for a long time and the pressure container still contains process media with a certain pressure value, the medium circulation between the compressor 31 to be tested and the first pressure container 10 can be cut off by closing the first pneumatic isolating valve 6 and the fifth manual isolating valve 8 at the same time, so that double protection is realized. Meanwhile, the arrangement of the fifth manual isolating valve 8 can facilitate the disassembly and inspection of the first pneumatic isolating valve 6.

In the embodiment, a second one-way valve 7 is also connected in series between the first pneumatic isolation valve 6 and the fifth manual isolation valve 8. Therefore, at the moment of test shutdown, the process medium is prevented from flowing back from the first pressure vessel 10 to the output end of the compressor 31 to be tested. At the same time, the second non return valve 7 may also be used to block the process medium flow between the compressor 31 to be tested and the first pressure vessel 10 when the compressor test system is shut down.

Further, a cooler 5 is connected between the output end of the compressor access station and the first pneumatic isolating valve 6, and the cooler 5 is used for cooling the high-temperature high-pressure process medium output by the compressor 31 to be tested so as to output the corresponding low-temperature low-pressure process medium.

In the embodiment, a fourth pneumatic isolation valve 15 is also connected in series between the fourth pressure vessel 13 and the input end of the compressor access station. When required for operation, the process medium communication between the fourth pressure vessel 13 and the compressor 31 to be tested can be controlled via the fourth pneumatic isolation valve 15.

Further, the input end of the compressor access station is communicated with a medium source 29, so that the medium source 29 pressesThe compressor test system supplies a medium. Wherein the medium source 29 may be a process medium H₂Medium source and purging medium N₂The media source of (2) can be switched according to the working requirement.

In particular, the medium source 29 may be connected to the circulation loop in which the compressor access station 1 is located by a branch line, the connection point of which to the circulation loop is located between the fourth pneumatic isolation valve 15 and the compressor access station input.

A fourth manual isolation valve 18 and a first non-return valve 19 are provided on the branch conduit where the medium source 29 is located. The fourth manual isolation valve 18 is used for controlling the connection and disconnection of the medium source 29 and the circulation loop where the compressor access station 1 is located, namely controlling whether the medium source 29 supplies medium to the circulation loop. The first non return valve 19 serves to prevent the medium in the circulation loop from flowing back in the direction of the medium source 29.

In operation, when it is desired to replenish the circulation loop with process medium, the fourth manual isolation valve 18 may be opened and replenished by a source of process medium. When the pressure of the process medium in the fourth pressure vessel 13 is higher than the pressure of the medium source 29, the process medium cannot be fed into the circulation circuit under pressure. At this time, the fourth pneumatic isolation valve 15 may be closed to block the process medium flowing between the fourth pressure vessel 13 and the compressor 31 to be tested, so as to reduce the pressure of the process medium at the input end of the compressor 31 to be tested, thereby facilitating the medium source 29 to supply the process medium to the circulation loop.

The input end of the compressor access station is also connected with a filter 16 for filtering the medium entering the compressor 31 to be tested. Specifically, the filter 16 is disposed between a connection point of the branch pipeline where the medium source 29 is located and the circulation loop and the input end of the compressor access station, that is, the filter 16 also filters the medium entering the compressor 31 to be tested through the medium source 29.

Further, a second pneumatic isolation valve 2 is connected between the input end and the output end of the compressor access station 1, and the second pneumatic isolation valve 2 is connected with the three pressure regulating assemblies in parallel. Specifically, one end of the second pneumatic isolation valve 2 is directly connected to the input end of the compressor access station, and the other end of the second pneumatic isolation valve 2 is directly connected to the output end of the compressor access station.

In use, when the compressor test system is stopped, the first pneumatic isolation valve 6 can be disconnected, the second pneumatic isolation valve 2 is opened, the process medium in the compressor 31 to be tested is enabled to carry out self-circulation, and meanwhile, the process medium in the self-circulation loop is released to the starting pressure range of the compressor 31 to be tested. Therefore, when the compressor testing system is started again subsequently, low-load starting can be achieved, and starting and stopping operations of the compressor testing system are facilitated.

In the embodiment, the output end of the compressor access station is further connected with a discharge assembly 3 for pressure discharge of the compressor test system. Specifically, one end of the bleed assembly 3 is connected between the compressor access station output and the cooler 5. The other end of the bleed assembly 3 is connected to a bleed line which communicates to a bleed tube outlet 30.

In other embodiments, one end of the bleed assembly 3 may be connected to the output of the cooler 5, and the other end of the bleed assembly 3 is connected to the bleed line.

In some particular embodiments, the bleed arrangement 3 comprises a third pneumatic isolation valve 301 and a throttle valve 302. The third pneumatic isolation valve 301 is connected to the output end of the compressor access station, and the throttle valve 302 is connected between the third pneumatic isolation valve 301 and the bleeding pipeline. The throttle valve 302 may be used to prevent the bleed speed from being too high, i.e., to avoid a sudden pressure drop in the compressor test system, thereby avoiding adverse effects on other components in the compressor test system.

In an embodiment, a third manual isolation valve 9 is further connected between the second check valve 7 and the fifth manual isolation valve 8, and the second check valve 7 and the fifth manual isolation valve 8 are both connected to the same end of the third manual isolation valve 9. The other end of the third manual isolation valve 9 is connected to the bleed line. Wherein the third manual isolation valve 9 is used for realizing auxiliary drainage effect in cooperation with the drainage assembly 3. At the same time, the third manual isolation valve 9 may also be used for auxiliary venting of the pressure of the first pressure vessel 10, as well as for a vent for medium purging.

Further, the compressor test system also comprises a safety protection assembly 4, when the compressor test system is in abnormal overhigh pressure during working, the safety protection assembly 4 can timely release the process medium in the compressor test system, and safety accidents are avoided.

Specifically, the safety shield assembly 4 includes a first relief valve 401 and a second relief valve 402. One end of the first safety valve 401 is communicated with the input end of the compressor access station, and the other end of the first safety valve 401 is communicated to the bleeding pipeline. One end of the second safety valve 402 is communicated with the output end of the compressor accessing station, and the other end of the second safety valve 402 is communicated to the bleeding pipeline.

The first safety valve 401 and the second safety valve 402 are set with safety pressure values, and when the pressure value of the process medium in the circulation loop exceeds the safety pressure value, the first safety valve 401 and/or the second safety valve 402 are opened to release and reduce the pressure of the process medium in the compressor test system, so that safety accidents are avoided.

In an embodiment, the bleeding assembly 3, the safety shield assembly 4 and the third manual isolation valve 9 may all be connected to the same bleed line.

From the top, the compressor test system that provides in this application because of important node all is controlled by pneumatic isolating valve to can realize remote operation control. It is understood that the compressor testing system may further include a main controller, and other electrical components in the compressor testing system may be electrically connected to and controlled by the main controller.

In the embodiment shown in fig. 1, the compressor testing system further includes a detecting component for detecting the pressure, temperature and flow rate of the circulation loop in the compressor testing system, and the detecting component is electrically connected to the main controller.

In particular, the detection assembly comprises a first temperature transmitter 20 and a second temperature transmitter 21. The first temperature transmitter 20 is arranged between the compressor access station output and the cooler 5. In use, the first temperature transmitter 20 is used for detecting the temperature of the process medium output by the compressor 31 to be measured, and generating a corresponding electrical signal to be sent to the main controller so as to be known by an operator. The second temperature transmitter 21 is arranged at the output end of the cooler 5 so as to detect the temperature of the process medium cooled by the cooler 5. In an embodiment, the detecting assembly further includes a sixth pressure transmitter 22, and the sixth pressure transmitter 22 is connectable between the output end of the compressor access station and the cooler 5, and is used for detecting the output pressure of the compressor 31 to be detected.

In an embodiment the detection assembly further comprises a first pressure transmitter 23, a second pressure transmitter 24, a third pressure transmitter 25 and a fourth pressure transmitter 26 for detecting the process medium pressure on the depressurization path. Specifically, a first pressure transmitter 23 is provided at the position of the first pressure vessel 10, a second pressure transmitter 24 is provided at the position of the second pressure vessel 11, a third pressure transmitter 25 is provided at the position of the third pressure vessel 12, and a fourth pressure transmitter 26 is provided at the position of the fourth pressure vessel 13. Therefore, the pressure regulation condition of each pressure regulating component to the process medium can be obtained through the first pressure transmitter 23, the second pressure transmitter 24, the third pressure transmitter 25 and the fourth pressure transmitter 26. Meanwhile, the pressure value of the process medium in the corresponding pressure vessel can be known according to the first pressure transmitter 23, the second pressure transmitter 24, the third pressure transmitter 25 and the fourth pressure transmitter 26, so that the process medium is prevented from exceeding the pressure resistance value of the pressure vessel, and safety accidents are avoided.

In the embodiment, the pressure container can be selected according to the working condition of the compressor to be tested, and when the compressor with the pressure grade of 45MPa or 90MPa is tested, the pressure container with the corresponding pressure resistance value can be selected respectively. Accordingly, the pipes and valves in the circulation circuit are also adapted to components having suitable pressure resistance values.

In an embodiment, the detection assembly further comprises a fourth temperature transmitter 27 and a fifth pressure transmitter 28. The fourth temperature transmitter 27 and the fifth pressure transmitter 28 are both disposed at the input end of the compressor access station, and the fourth temperature transmitter 27 and the fifth pressure transmitter 28 are used for performing corresponding temperature detection and pressure detection on the process medium entering the compressor 31 to be detected, so as to obtain the input temperature and pressure of the compressor 31 to be detected.

For example, taking the compressor 31 to be tested with a pressure level of 45MPa as an example, three-stage pressure reduction regulation can be set in the circulation loop. As shown in fig. 4, in use, the compressor 31 to be tested may be switched in at the compressor switching-in station 1. Preparation before start-up may be performed first, opening various valves in the compressor test system circulation loop, etc. Subsequently, the interior of the compressor test system is purged. After purging is completed, the fourth pneumatic isolation valve 15 is closed, the fourth manual isolation valve 18, the first pneumatic isolation valve 6 and the pressure regulating assembly are kept open, and process medium pre-filling is carried out on the compressor testing system. After the process medium is pre-filled, the first pneumatic isolation valve 6 is closed, and the second pneumatic isolation valve 2 is opened, so that the compressor testing system is in a self-circulation mode to start the compressor. After the compressor is started, the pressurization operation of the compressor 31 to be tested can be carried out, namely the closed circulation of the process medium in the compressor test system can be carried out; during the period, the air can be replenished to the compressor testing system. And stopping the machine after the test on the compressor 31 to be tested is completed.

When the process medium is pre-filled, the compressor 31 to be tested can be opened to communicate the pipelines, and the process medium is continuously input into the circulation loop of the compressor testing system. When the pressure value of the first pressure vessel 10 reaches the target pressure value, it may be indicated that the pressure values of the second pressure vessel 11, the third pressure vessel 12 and the fourth pressure vessel 13 have also reached the respective target pressure values. The target pressure value of the first pressure vessel 10 may be set according to the pressure level of the compressor 31 to be measured, that is, the target pressure value may be set to 45 Mpa.

In the working process of the compressor testing system provided by the application, the process medium is in closed circulation, so that the process medium is basically not reduced, long-time circulation operation can be performed, the service life test of the compressor 31 to be tested is realized, and the process medium resource can be saved.

For example, the temperature and the pressure at the output end of the compressor 31 to be tested may be detected by the detection component, and the output temperature and the pressure value of the compressor 31 to be tested may be obtained; the actual compression ratio of the compressor 31 to be tested is obtained by detecting the pressure values of the input end and the output end of the compressor 31 to be tested; the flow value in the circulation loop can also be obtained by means of a mass flow meter 17. This makes it possible to test various performances and flow rates of the compressor 31 to be tested.

When the compressor testing system needs to be shut down, the first pneumatic isolation valve 6 can be closed, and the process medium circulation between the pressure container and the output end of the compressor 31 to be tested is cut off. And then, the pressure of the process medium between the output end of the compressor 31 to be tested and the first pneumatic isolation valve 6 is released to the starting pressure range of the compressor 31 to be tested, and the second pneumatic isolation valve 2 is opened to realize the self-circulation of the process medium in the compressor 31 to be tested, so that the low-load starting is realized when the compressor testing system is restarted subsequently.

Therefore, when the compressor testing system is stopped, a large amount of process media in the compressor testing system do not need to be discharged, and only the corresponding pressure discharge is needed to be carried out on the path section where the compressor 31 to be tested is located, so that the starting pressure range of the compressor 31 to be tested can be reached, and the compressor 31 to be tested can be started again. Therefore, the flexible starting and stopping of the compressor detection system can be realized, and the waste of process media can be reduced.

When the test is finished or the components of the compressor test system are maintained, the process medium in the compressor test system can be discharged through pressure relief, and then the purging medium is conveyed into the circulating loop of the compressor test system through the medium source 29 to be purged, so that the process medium in the compressor test system is completely discharged, and the potential safety hazard caused by subsequent maintenance and other operations is avoided.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A compressor test system is characterized by comprising a compressor access station and at least two pressure regulating assemblies;

the compressor access station is sequentially connected with the at least two pressure regulating assemblies in series, and the compressor access station and the at least two pressure regulating assemblies form a circulation loop; the compressor access station is used for connecting a compressor to be tested, wherein one end of the compressor access station, which is connected with the output end of the compressor to be tested, is a compressor access station output end, and one end of the compressor access station, which is connected with the input end of the compressor to be tested, is a compressor access station input end;

the voltage regulating assembly comprises a voltage reducing branch and a constant voltage branch which are arranged in parallel, and the voltage reducing branch and the constant voltage branch are alternatively switched on.

2. The compressor test system of claim 1, wherein the pressure regulating assemblies are provided in three groups, and the three groups of pressure regulating assemblies are connected in series in sequence.

3. The compressor testing system of claim 1 or 2, wherein the pressure reducing branch comprises a pressure reducing valve, a first manual isolation valve and a second manual isolation valve, the first manual isolation valve and the second manual isolation valve are respectively arranged at two ends of the pressure reducing valve, and the first manual isolation valve and the second manual isolation valve are used for controlling the on-off of the pressure reducing branch.

4. A compressor test system as claimed in claim 1 or 2 wherein a pressure vessel is connected to either end of the pressure regulating assembly.

5. The compressor testing system of claim 4, wherein a first pneumatic isolation valve is connected between the output end of the compressor access station and one of the pressure vessels adjacent to the output end of the compressor access station.

6. The compressor testing system of claim 4, wherein a third manual isolation valve is connected between the output end of the compressor access station and one of the pressure vessels adjacent to the output end of the compressor access station;

the compressor is connected to the same end of the station output end and the pressure container, and the other end of the third manual isolation valve is used for being communicated with a bleeding pipeline.

7. The compressor test system of claim 1, wherein a second pneumatic isolation valve is further connected between the compressor access station input and the compressor access station output; the second pneumatic isolation valve is connected with the at least two pressure regulating assemblies in parallel.

8. The compressor testing system of claim 1, wherein a medium source is connected to an input end of the compressor access station, and a fourth manual isolation valve and a first one-way valve are sequentially connected in series between the medium source and the compressor access station.

9. The compressor test system of claim 1 or 8, wherein a filter is further connected to the compressor access station input end and is used for filtering media entering the compressor to be tested.

10. The compressor testing system of claim 1, wherein a safety shield assembly is further connected to the compressor access station;

the safety shield assembly is configured to pressure bleed the recirculation loop when the pressure in the recirculation loop exceeds a safety pressure.

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