A comprehensive test bench for centrifugal pumps and ejector pumps

Abstract

The present invention discloses a comprehensive test bench for centrifugal pumps and ejector pumps, and relates to the technical field related to performance test equipment. The present invention includes an auxiliary oil tank assembly, including an auxiliary tank and a level gauge 1 fixed on the outer side of the auxiliary tank; a sealing assembly located on the right side of the vacuum tank, a telescopic air frame connected to the inside of the sealing box is fixed on the end face of the sealing box opposite to the box cover, and a scale frame fixedly connected to the piston end of the telescopic cylinder located outside the sealing box is provided; a centrifugal test assembly, an ejector test assembly, including an oil tank 2 located to the left of the oil tank 1 and a movable cover used in conjunction with the upper end face of the oil tank 2; a linkage assembly. The present invention can perform air tightness detection and reverse air tightness test on the centrifugal pump by installing the centrifugal pump at the end position of the box cover and pressurizing the inside of the sealing box. At the same time, the centrifugal test assembly and the ejector test assembly are used in conjunction to test the performance of the fuel sprayed from the ejector pump body.

Description

Technical Field

[0001] The invention belongs to the technical field related to pump performance testing equipment, and in particular relates to a comprehensive test bench for centrifugal pumps and ejector pumps. Background Art

[0002] When the jet pump is working, it uses the high-pressure fuel of the booster pump as the jet power. The pressure oil pipe introduces the fuel pressurized by the booster pump into the nozzle position of the jet pump, and it is ejected at a higher speed through the contraction nozzle. In order to be able to measure the working value of the jet pump, it is necessary to use the corresponding test bench to measure the jet pump. At the same time, the centrifugal pump uses the rotation of the impeller to make the water centrifugal to work. Before starting the water pump, the pump casing and the suction pipe must be filled with water, and then the motor is started so that the pump shaft drives the impeller and water to rotate at a high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows into the water pressure pipeline of the water pump through the flow channel of the volute pump casing. Therefore, in the production of centrifugal pumps, it is necessary to test their sealing properties, so it is necessary to use the corresponding centrifugal pump and jet pump comprehensive test bench.

[0003] Therefore, when the ejector pump is required to be tested, the working value of the ejector pump cannot be directly determined due to the lack of accurate testing of the ejector pump, which will affect the efficiency of the performance test and the performance quality of the produced products cannot be quickly known. At the same time, after the centrifugal pump is produced, the sealing of the centrifugal pump cannot be directly judged, which will lead to the uncertainty of the waterproof performance of the centrifugal pump, which will affect the production quality of the centrifugal pump. To this end, we provide a comprehensive test bench for centrifugal pumps and ejector pumps to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a comprehensive test bench for centrifugal pumps and ejector pumps. By placing the product in a sealed box and pressurizing the interior of the sealed box, the product can be subjected to air tightness detection and reverse air tightness test. At the same time, the centrifugal test component and the ejector test component are used in combination to perform performance tests on the products inside oil tank one and oil tank two.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention provides a centrifugal pump and induced ejection pump comprehensive test bench, comprising an auxiliary oil tank assembly, comprising an auxiliary box and a liquid level gauge fixed on the outer side of the auxiliary box, a flow guide port is provided on the side wall of the auxiliary box, a reflux port is provided on the side wall of the auxiliary box directly below the flow guide port, a vacuum tank with a vacuum generator is arranged at the position directly to the right of the auxiliary oil tank assembly, a sealing assembly located on the right of the vacuum tank comprises a sealing box and a box cover used in conjunction with the open end of the sealing box, a telescopic air frame connected to the inside of the sealing box is fixed to the end face of the sealing box opposite to the box cover, and a scale frame fixedly connected to the piston end of the telescopic air cylinder is arranged on the peripheral side of the telescopic air cylinder outside the sealing box; a centrifugal test assembly comprises an oil tank located directly in front of the sealing box and a scale frame connected to the upper end face of the oil tank. A movable cover is used in conjunction with it, and a booster pump connected to the interior of tank one is fixed at the bottom of the tank one; an ejection test assembly includes a tank two located to the left of tank one and a movable cover used in conjunction with the upper end surface of tank two, and an ejection pump body is arranged in front of tank two; a connecting assembly for connecting the pipelines of the auxiliary tank assembly, vacuum tank, centrifugal test assembly and ejection test assembly is arranged between the auxiliary tank assembly, vacuum tank, centrifugal test assembly and ejection test assembly, and the connecting assembly includes a vacuum pipe, an oil guide outlet pipeline, an oil filter for filtering oil, a heat exchanger located between the booster pump and the ejection pump body, and a two-way pipe with both ends connected to the interior of tank one and tank two respectively; a linkage assembly includes a tank balancing pipeline for connecting tank one and tank two and a shut-off valve fixed on the tank balancing pipeline.

[0007] The present invention is further configured such that the upper end surface of the auxiliary box is provided with a box plate used in conjunction with the auxiliary box, and a safety valve 1 is fixed to the auxiliary box located behind the liquid level gauge 1.

[0008] The present invention is further configured such that a movable rolling frame which fits the four corners of the auxiliary box is fixed to the bottom of the auxiliary box, and a replacement pipe which is connected to the inside of the auxiliary box is fixed to the bottom of the auxiliary box.

[0009] The present invention is further configured such that a movable frame is fixed at the bottom of the sealed box, and two flip frames are fixed on the circumferential side of the sealed box, which are symmetrically arranged front and back and rotatably connected to the movable frame; an opening for installing a centrifugal pump is opened at the end of the box cover, and a detection valve is fixed on the end face of the sealed box opposite to the box cover.

[0010] The present invention is further configured such that a plurality of assembly racks connected to the circumference of the box cover are evenly distributed in a ring shape on the circumference of the sealing box, and the ends of the assembly racks are rotatably provided with rotating clamping blocks for limiting the box cover.

[0011] The present invention is further configured such that a lifting frame 1 for carrying a movable cover is fixed to the peripheral side of the first oil tank, and a lifting frame 2 for moving the cover is fixed to the peripheral side of the second oil tank.

[0012] The present invention is further configured such that a liquid level gauge 2, a maintenance window and a sensor 1 are fixed to the periphery of the oil tank 1, a liquid level gauge 3, an inspection window and a sensor 2 are fixed to the periphery of the oil tank 2, a safety valve 2 is fixed to the bottom of the oil tank 2, and an ejector pipe connected to the interior of the oil tank 2 is fixed to the outlet end of the ejector pump body.

[0013] The present invention is further configured such that the inlet ends of the ejector pump body and the booster pump are respectively connected to the port positions close to the heat exchanger, one end of the vacuum tube is fixed to the port of the vacuum tank, and the other end is connected to the interior of the second oil tank, and an air path tube connected to the interior of the first oil tank is fixed in the middle of the vacuum tube.

[0014] The present invention is further configured such that an oil guide inlet pipeline fixed to the end of the guide port is fixed in the middle of the two-way tube, one end of the oil guide outlet pipeline is fixedly connected to the oil outlet of the second oil tank, and the other end is fixedly connected to the end face of the reflux port, and a drainage pump for pumping liquid is fixed in the middle position of the oil guide inlet pipeline.

[0015] The present invention is further configured such that an oil return pipe with both ends connected to the inside of oil tank one and oil tank two is provided at a position located inside the two-way pipe, a flow pipe connected to the oil filter is fixed in the middle of the oil return pipe, and an oil filter pipe connected to the inside of oil tank one is fixed at the inlet end of the oil filter; a plurality of ball valves are fixed on the two-way pipe, the oil guide inlet pipeline, the connecting pipe, the return pipe, the flow pipe and the oil guide outlet pipeline, and a middle pipe connected to the pipeline between the heat exchange box and the ejector pump body is fixed in the middle of the two-way pipe.

[0016] The present invention has the following beneficial effects:

[0017] Install the centrifugal pump on the end surface of the box cover so that the centrifugal pump, box cover and sealed box are in a sealed state. At this time, the inside of the box cover is pressurized and inflated. When the sealing performance of the centrifugal pump is sufficient, the gas inside the sealed box will push the telescopic cylinder, and the piston end inside the telescopic cylinder will push the scale frame to move the scale frame, so that the airtight performance can be directly judged. When the sealing performance is insufficient, the gas inside the sealed box will directly leak out from the position where the centrifugal pump leaks.

[0018] Through the coordinated use of the booster pump and the ejector pump body, the booster pump transports the oil in the oil tank to the position of the ejector pump body, and the ejector pump body ejects the oil into the second oil tank. After the product is placed into the second oil tank, it is ejected into the second oil tank at a higher speed through the contraction nozzle of the ejector pump body. By detecting the oil level growth efficiency inside the second oil tank, the working intensity of the ejector pump body can be judged, and the corresponding various working values ​​when the ejector pump body is working can be measured.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a combination diagram of the centrifugal test component, the ejection test component and the linkage component in the present invention.

[0023] Figure 3 It is a structural schematic diagram of the ejection test assembly in the present invention.

[0024] Figure 4 It is a structural diagram of the auxiliary oil tank assembly in the present invention.

[0025] Figure 5 It is a right view structural assembly diagram of the sealing component in the present invention.

[0026] Figure 6 It is a left-side structural assembly diagram of the sealing component in the present invention.

[0027] Figure 7 It is a diagram of multiple pipeline combinations of connecting components in the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 100- auxiliary oil tank assembly, 101- auxiliary box, 101a- guide port, 101b- reflux port, 101c- replacement pipe, 102- box plate, 103- level gauge 1, 104- mobile roller rack, 105- safety valve 1, 200- vacuum tank, 300- sealing assembly, 301- sealing box, 301a- assembly rack, 301a-1- rotating block, 301b- detection valve, 302- flip rack, 303- movable rack, 304- box cover, 305- telescopic gas rack, 305a- scale rack, 400- connecting assembly, 401- two-way pipe, 401a- oil inlet pipeline, 401a-2- connecting pipe, 402- oil filter, 402a- oil filter pipe, 403- heat exchanger, 404- vacuum pipe, 404a- gas pipe, 405- ball valve, 406-return oil pipe, 406a-circulation pipe, 407-drainage pump, 408-oil guide outlet pipeline, 409-mid-line pipe, 500-centrifugal test assembly, 501-oil tank one, 502-movable cover, 503-liquid level gauge two, 504-boosting pump, 505-maintenance window, 506-lifting frame one, 507-sensor one, 600-injection test assembly, 601-oil tank two, 601a-inspection window, 602-injection pump body, 602a-injection pipe, 603-movable cover, 604-lifting frame two, 605-safety valve two, 606-liquid level gauge three, 607-sensor two, 700-linkage assembly, 701-oil tank balance pipeline; 702-cut-off valve. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0031] See also Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a comprehensive test bench for centrifugal pumps and ejector pumps. By installing the centrifugal pump at the end position of the box cover 304 and pressurizing the interior of the sealed box 301, the centrifugal pump can be tested for air tightness and reverse air tightness. At the same time, the centrifugal test component 500 and the ejector test component 600 are used in combination to test the performance of the fuel sprayed from the ejector pump body 602.

[0032] Specifically, the auxiliary oil tank assembly 100 includes an auxiliary tank 101 and a level gauge 103 fixed on the outer side of the auxiliary tank 101; a vacuum tank 200 with a vacuum generator is arranged at the position directly to the right of the auxiliary oil tank assembly 100; a sealing assembly 300 located to the right of the vacuum tank 200 includes a sealing box 301 and a box cover 304 used in conjunction with the open end of the sealing box 301; a centrifugal test assembly 500 includes an oil tank 1 501 located directly in front of the sealing box 301 and a movable cover 502 used in conjunction with the upper end face of the oil tank 1 501; an ejection test assembly 600 includes an oil tank 2 601 located directly to the left of the oil tank 1 501 and a movable cover 502 used in conjunction with the upper end face of the oil tank 2 601. A movable cover 603 for use with the auxiliary oil tank assembly 100, the vacuum tank 200, the centrifugal test assembly 500 and the ejection test assembly 600 is provided with a connecting assembly 400 for connecting the pipelines of the four; the connecting assembly 400 includes a vacuum pipe 404, an oil guide outlet pipeline 408, an oil filter 402 for filtering oil, a heat exchanger 403 located between the booster pump 504 and the ejection pump body 602, and a two-way pipe 401 whose two ends are respectively connected to the inside of the oil tank 1 501 and the oil tank 2 601; a linkage assembly 700 includes an oil tank balancing pipeline 701 for connecting the oil tank 1 501 and the oil tank 2 601 and a cut-off valve 702 fixed on the oil tank balancing pipeline 701;

[0033] Through the arrangement and use of the above-mentioned structure, the product is installed in the corresponding internal position of the centrifugal test assembly 500 and the ejection test assembly 600 through the cooperation of the auxiliary oil tank assembly 100, the vacuum tank 200, the centrifugal test assembly 500 and the ejection test assembly 600, and the auxiliary oil tank assembly 100 is controlled to transport the internal oil to the centrifugal test assembly 500 and the ejection test assembly 600, and then the centrifugal pump pressure test assembly and the ejection test assembly 600 perform performance testing on the product inside them.

[0034] according to Figure 5 and Figure 6 A guide port 101a is provided on the side wall of the auxiliary box 101, and a return port 101b is provided on the side wall of the auxiliary box 101 directly below the guide port 101a. A telescopic air frame 305 connected to the interior of the sealed box 301 is fixed to the end face of the sealed box 301 opposite to the box cover 304, and a scale frame 305a fixedly connected to the piston end of the telescopic air cylinder is provided on the peripheral side of the sealed box 301. A booster pump 504 connected to the interior of the oil tank 1 501 is fixed to the bottom thereof, and an ejector pump body 602 is provided in front of the oil tank 2 601;

[0035] When the above-mentioned structure is used, the booster pump 504 is used in conjunction with the ejector pump body 602, and the booster pump 504 delivers the oil in the oil tank to the position of the ejector pump body 602, and the ejector pump body 602 ejects the oil into the second oil tank 601. After the product is placed in the second oil tank 601, it is ejected into the second oil tank 601 at a high speed through the contraction nozzle of the ejector pump body 602. By detecting the oil level growth efficiency inside the second oil tank 601, the working intensity of the ejector pump body 602 can be determined, and the corresponding various working parameters when the ejector pump body 602 is working can be measured. value, and when the sealing performance of the centrifugal pump needs to be tested, the centrifugal pump can be installed on the end surface of the box cover 304, so that the centrifugal pump, the box cover 304 and the sealing box 301 are in a sealed state. At this time, the inside of the box cover 304 is pressurized and inflated. When the sealing performance of the centrifugal pump is sufficient, the gas inside the sealing box 301 will push the telescopic cylinder, and the piston end inside the telescopic cylinder will push the scale frame 305a to move the scale frame 305a, so that the airtight performance can be directly judged. When the sealing performance is insufficient, the gas inside the sealing box 301 will directly penetrate from the position where the centrifugal pump is deflated.

[0036] It should be noted that all electronic equipment used in this test bench are connected to external control equipment to ensure the normal operation of the electronic equipment. Example 2

[0037] See also Figure 4 On the basis of Example 1, this embodiment can facilitate the control of the movement of the auxiliary box 101 and the replacement of the oil inside the auxiliary box 101 by using the movable roller 104 and the replacement pipe 101c.

[0038] Specifically, the upper end surface of the auxiliary box 101 is provided with a box plate 102 for use therewith, the auxiliary box 101 located behind the liquid level gauge 103 is fixed with a safety valve 105, the bottom of the auxiliary box 101 is fixed with a movable roller frame 104 that fits with the four corners thereof, and the bottom of the auxiliary box 101 is fixed with a replacement pipe 101c that is connected with the interior thereof.

[0039] By setting up and using the above-mentioned structure, the movable roller 104 is installed at the bottom position of the auxiliary box 101, so that when controlling the movement of the auxiliary box 101, the sliding of the movable roller 104 can facilitate the movement of the auxiliary box 101. At the same time, when replacing the oil inside the auxiliary box 101, the replacement tube 101c can be opened to discharge the oil inside the auxiliary box 101, and the box plate 102 can be opened to add the oil inside the auxiliary box 101. Example 3

[0040] See also Figure 5 and Figure 6 On the basis of the first embodiment, the present embodiment makes it easier to disassemble and assemble the box cover 304 by rotating the rotating block 301a-1 at the end of the assembly frame 301a.

[0041] Specifically, a movable frame 303 is fixed to the bottom of the sealed box 301, and two flip frames 302 are fixed to the circumference of the sealed box 301, which are symmetrically arranged front and back and rotatably connected to the movable frame 303; an opening for installing a centrifugal pump is opened at the end of the box cover 304, and a detection valve 301b is fixed to the end face of the box cover 304 opposite to the sealed box 301; a plurality of assembly frames 301a connected to the circumference of the box cover 304 are evenly distributed in a ring shape on the circumference of the sealed box 301, and a rotating block 301a-1 for limiting the box cover 304 is rotatably arranged at the end of the assembly frame 301a.

[0042] By setting up and using the above-mentioned structure, the internal air pressure of the sealed box 301 is regularly detected through the detection valve 301b. When the box cover 304 needs to be removed, the rotating block 301a-1 can be rotated on the assembly frame 301a, so that the rotating block 301a-1 will be rotated out from the end face position of the box cover 304, so that the box cover 304 can be directly removed from the end position of the sealed box 301. Example 4

[0043] See also Figure 2 and Figure 3 On the basis of Example 1, this example can facilitate opening of oil tank 1 501 and oil tank 2 601 by using lifting frame 1 506 and lifting frame 2 604 in coordination, so as to install the product inside oil tank 1 501 and oil tank 2 601.

[0044] Specifically, a lifting frame 506 for carrying the movable cover 502 is fixed to the periphery of the oil tank 1 501, a lifting frame 604 for moving the cover 603 is fixed to the periphery of the oil tank 2 601, a liquid level gauge 2 503, a maintenance window 505 and a sensor 1 507 are fixed to the periphery of the oil tank 1 501, a liquid level gauge 3 606, an inspection window 601a and a sensor 2 607 are fixed to the periphery of the oil tank 2 601, a safety valve 2 605 is fixed to the bottom of the oil tank 2 601, and an ejection tube 602a connected to the interior of the oil tank 2 601 is fixed to the outlet end of the ejection pump body 602.

[0045] By setting up and using the above-mentioned structure, the movable cover 502 is controlled to move by the lifting frame 1 506, so that the movable cover 502 will open the oil tank 1 501, and the lifting frame 2 604 controls the movement of the movable cover 603, and then the movable cover 603 will open the top position of the oil tank 2 601, so that the product can be placed in the corresponding oil tank 1 501 and oil tank 2 601, and at the same time, the liquid level gauge 2 503 and the liquid level gauge 3 606 used can test the oil level in the oil tank 1 501 and the oil tank 2 601, and at the same time, the inspection window 601a and the maintenance window 505 used can inspect the interior of the oil tank 1 501 and the oil tank 2 601. Example 5

[0046] See also Figure 2 , Figure 3 , Figure 4 and Figure 7 On the basis of Example 1, this embodiment sets an oil filter 402 to filter the oil discharged from the oil tank 501 to ensure that it can be reused and the use of the heat exchange box is reduced.

[0047] Specifically, the inlet ends of the ejector pump body 602 and the booster pump 504 are respectively connected to the port positions near the heat exchanger 403, one end of the vacuum tube 404 is fixed to the port of the vacuum tank 200, and the other end is connected to the interior of the second oil tank 601, and the middle of the vacuum tube 404 is fixed with a gas line 404a connected to the interior of the first oil tank 501, and the middle of the two-way tube 401 is fixed with an oil guide inlet pipeline 401a fixed to the end of the guide port 101a, one end of the oil guide outlet pipeline 408 is fixedly connected to the oil outlet of the second oil tank 601, and the other end is fixedly connected to the end face of the return port 101b, and the middle position of the oil guide inlet pipeline 401a is fixed with a gas line 404a connected to the interior of the first oil tank 501. The drainage pump 407 for pumping liquid is located on the inner side of the two-way pipe 401 and is provided with a return oil pipe 406 whose two ends are connected to the inside of the oil tank 501 and the second oil tank 601. A flow pipe 406a connected to the oil filter 402 is fixed in the middle of the return oil pipe 406, and an oil filter pipe 402a connected to the inside of the oil tank 501 is fixed at the inlet end of the oil filter 402; a plurality of ball valves 405 are fixed on the two-way pipe 401, the oil guide inlet pipeline 401a, the connecting pipe 401a-2, the return pipe, the flow pipe 406a and the oil guide outlet pipeline 408, and a middle pipe 409 connected to the pipeline between the heat exchange box and the ejector pump body 602 is fixed in the middle of the two-way pipe 401.

[0048] By setting up and using the above-mentioned structure, after the internal oil of the fuel tank 1 501 is discharged from the internal position of the oil filter tube 402a, it will then pass through the oil filter 402, and the discharged oil will be filtered by it. Then, after the oil is filtered, it will flow into the circulation pipe 406a, and then it will flow back into the interior of the fuel tank 1 501 and the fuel tank 2 601 through the return oil pipe 406. At the same time, through the vacuum tank 200, the vacuum tube 404 and the air circuit pipe 404a used by it will be connected with the interior of the fuel tank 1 501 and the fuel tank 2 601, so as to ensure that the air pressure inside the fuel tank 1 501 and the fuel tank 2 601 can be quickly balanced with the external atmospheric pressure. At the same time, the auxiliary tank 101 is connected with the interior of the fuel tank 1 501 and the fuel tank 2 601 through the two-way pipe 401, the guide inlet pipeline and the oil guide outlet pipeline, so that the auxiliary tank 101 can provide the interior of the fuel tank 1 501 and the fuel tank 2 601 with the fuel required for the test and the refueling.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A centrifugal pump and ejector pump comprehensive test bench, characterized by: include, An auxiliary oil tank assembly (100) comprises an auxiliary tank (101) and a liquid level gauge (103) fixed on the outer surface of the auxiliary tank (101), wherein a flow guide port (101a) is provided on a side wall of the auxiliary tank (101), and a return port (101b) is provided on the side wall of the auxiliary tank (101) directly below the flow guide port (101a); A vacuum tank (200) with a vacuum generator is provided at the right side of the auxiliary oil tank assembly (100); The sealing assembly (300) located on the right side of the vacuum tank (200) comprises a sealing box (301) and a box cover (304) used in conjunction with the open end of the sealing box (301); a telescopic air frame (305) connected to the interior of the sealing box (301) is fixed to the end surface of the sealing box (301) opposite to the box cover (304); and a scale frame (305a) fixedly connected to the piston end of the telescopic air cylinder located outside the sealing box (301) is provided at a position around the telescopic air cylinder; The centrifugal test assembly (500) comprises an oil tank (501) located directly in front of the sealing box (301) and a movable cover (502) used in conjunction with the upper end surface of the oil tank (501), wherein a booster pump (504) connected to the interior of the oil tank (501) is fixed to the bottom of the oil tank (501); The ejection test assembly (600) comprises an oil tank 2 (601) located directly to the left of the oil tank 1 (501) and a movable cover (603) used in conjunction with the upper end surface of the oil tank 2 (601), wherein an ejection pump body (602) is arranged in front of the oil tank 2 (601); A connecting assembly (400) for connecting the auxiliary oil tank assembly (100), the vacuum tank (200), the centrifugal test assembly (500) and the ejection test assembly (600) is provided between the auxiliary oil tank assembly (100), the vacuum tank (200), the centrifugal test assembly (500) and the ejection test assembly (600); The connecting component (400) includes a vacuum tube (404), an oil outlet pipeline (408), an oil filter (402) for filtering oil, a heat exchanger (403) located between the booster pump (504) and the ejector pump body (602), and a two-way tube (401) whose two ends are respectively connected to the inside of the first oil tank (501) and the second oil tank (601); and, The linkage assembly (700) comprises an oil tank balancing pipe (701) for connecting oil tank one (501) and oil tank two (601) and a shut-off valve (702) fixed on the oil tank balancing pipe (701); The oil tank one (501) is fixed with a liquid level gauge two (503), a maintenance window (505) and a sensor one (507) on its periphery; the oil tank two (601) is fixed with a liquid level gauge three (606), a maintenance window (601a) and a sensor two (607) on its periphery; the oil tank two (601) is fixed with a safety valve two (605) on its bottom; and the outlet end of the ejector pump body (602) is fixed with an ejector pipe (602a) connected to the interior of the oil tank two (601); The inlet ends of the ejector pump body (602) and the booster pump (504) are respectively connected to the port positions close to the heat exchanger (403); one end of the vacuum tube (404) is fixed to the port of the vacuum tank (200), and the other end is connected to the interior of the second oil tank (601); and a gas pipe (404a) connected to the interior of the first oil tank (501) is fixed in the middle of the vacuum tube (404); An oil guide inlet pipeline (401a) fixed to the end of the guide port (101a) is fixed in the middle of the bidirectional tube (401); one end of the oil guide outlet pipeline (408) is fixedly connected to the oil outlet of the second oil tank (601), and the other end is fixedly connected to the end surface of the return port (101b); a drainage pump (407) for pumping liquid is fixed in the middle of the oil guide inlet pipeline (401a); An oil return pipe (406) whose two ends are connected to the inside of oil tank one (501) and oil tank two (601) is arranged at a position inside the bidirectional pipe (401); a flow pipe (406a) connected to the oil filter (402) is fixed in the middle of the oil return pipe (406); an oil filter pipe (402a) connected to the inside of oil tank one (501) is fixed at the inlet end of the oil filter (402); A plurality of ball valves (405) are fixed on the two-way pipe (401), the oil inlet pipeline (401a), the connecting pipe (401a-2), the return pipe, the circulation pipe (406a) and the oil outlet pipeline (408); a middle pipe (409) connected to the pipelines between the heat exchange box and the ejector pump body (602) is fixed in the middle of the two-way pipe (401); The centrifugal pump is installed at the end surface of the box cover (304), so that the centrifugal pump, the box cover (304) and the sealing box (301) are in a sealed state, and the interior of the box cover (304) is pressurized and inflated to perform an airtightness test.

2. A centrifugal pump and ejector pump comprehensive test bench according to claim 1, characterized in that: The upper end surface of the auxiliary box (101) is provided with a box plate (102) for use therewith, and a safety valve (105) is fixed to the auxiliary box (101) located behind the liquid level gauge (103).

3. A centrifugal pump and ejector pump comprehensive test bench according to claim 2, characterized in that: The bottom of the auxiliary box (101) is fixed with a movable roller frame (104) that fits in with the four corners thereof, and the bottom of the auxiliary box (101) is fixed with a replacement pipe (101c) that is connected to the interior thereof.

4. A centrifugal pump and ejector pump comprehensive test bench according to claim 1, characterized in that: A movable frame (303) is fixed to the bottom of the sealed box (301), and two turning frames (302) are fixed to the circumference of the sealed box (301) and are arranged symmetrically in the front and back directions and are rotatably connected to the movable frame (303); An opening for installing a centrifugal pump is provided at the end of the box cover (304), and a detection valve (301b) is fixed to the end surface of the sealing box (301) opposite to the box cover (304).

5. A centrifugal pump and ejector pump integrated test bench according to claim 4, characterized in that: The sealing box (301) is evenly distributed in a ring shape on the circumference of the sealing box (301) with a plurality of assembly racks (301a) connected to the circumference of the box cover (304), and the ends of the assembly racks (301a) are rotatably provided with rotational clamping blocks (301a-1) for limiting the position of the box cover (304).

6. A centrifugal pump and ejector pump integrated test bench according to claim 1, characterized in that: A lifting frame 1 (506) for carrying a movable cover (502) is fixed to the peripheral side of the oil tank 1 (501), and a lifting frame 2 (604) for moving the cover (603) is fixed to the peripheral side of the oil tank 2 (601).

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