An embedded plunger pump test tool

Abstract

The application discloses an embedded plunger pump test tool, which is composed of a shell, a rear cover, a transition shaft, an accessory and a pump to be tested; the shell comprises a front shell and a rear shell; the rear cover comprises a rear cover and a shaft seal; the transition shaft comprises a transition shaft and a bearing; and the accessory comprises an oil outlet joint, a pipe joint and a sealing element. The tool is integrally installed on an oil pump test bench installation station, a test bench motor transmits power to the pump to be tested through the transition shaft, so that the transmission shaft of the pump to be tested rotates, oil is pressurized and then enters the cavity of the tool through the pipe joint, the pump to be tested is soaked in the oil, and the pump to be tested discharges high-pressure oil from an oil outlet through the oil outlet joint. The application can ensure that the oil does not leak during the high-temperature test process, and the tool is more convenient to disassemble, assemble and replace.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of hydraulic pressure, and particularly relates to a test tool for an embedded plunger pump. BACKGROUND

[0002] The embedded plunger pump has a wide application in the fields of oil exploration, robots, exoskeletons and the like due to its small size and high power density. The embedded plunger pump has a special application environment, and its target use environment is harsh. The conventional test bench and tool cannot meet the test conditions. SUMMARY

[0003] In view of the above problems, the present application aims to provide a test tool for an embedded plunger pump, which provides test conditions for the life test of the embedded plunger pump.

[0004] The present application is a high-pressure test tool for an embedded plunger pump. The tool comprises a shell, a cavity in the shell, and a pump 2 to be tested installed in the cavity. A pipe joint 4 is arranged on the upper surface of the shell and is in communication with the cavity. The pipe joint 4 is connected with an oil inlet and an oil return respectively.

[0005] The pump to be tested is connected with an external motor through a transition shaft. One end of the transition shaft is connected with the output end of the external motor, and the other end is connected with the rotating shaft of the pump to be tested 2.

[0006] Further, the shell comprises a front shell 3 and a rear shell 5. The front shell 3 is fixed on the rear shell 5 by screws, and the rear shell 5 is fixed on a test bench mounting seat by screws. The pump to be tested 2 is installed in the shell. The front shell 3 and the rear shell 5 are in a detachable assembly structure.

[0007] Further, the rear end surface of the shell is provided with a rear cover 6, a shaft seal 9, a transition shaft 7 and a bearing 8. The transition shaft 7 is located at the other end of the oil outlet joint of the pump to be tested 2 and is coaxial with the oil outlet joint.

[0008] Further, the tool is provided with accessories, which comprise an oil outlet joint 1, a pipe joint 4 and a sealing element 10. The oil outlet joint 1 is installed on the oil outlet of the pump to be tested 2. The pipe joint 4 is installed on the upper surface of the rear shell and is connected with the oil inlet and the oil return respectively. The sealing element 10 is used for sealing the shell and the transition shaft.

[0009] Further, the rear cover 6 is installed on the rear shell 5 by screws. The shaft seal 9 is located at the middle position of the rear cover 6. The shaft seal 9 allows the transition shaft 7 to pass through and is limited by a snap spring. The transition shaft 7 is connected with the bearing 8 and is installed in the bearing mounting hole of the rear shell 5 and is limited by the rear cover 6.

[0010] Compared with the prior art, the present application has the following advantages:

[0011] 1、The application adopts a closed shell design, the pump to be tested is installed inside the tool, which facilitates to ensure the constant overall temperature of the pump to be tested, and facilitates to increase the pressure of the oil inlet and ensure the oil suction capacity of the pump.

[0012] 2、The application adopts a quick mounting interface, which facilitates to disassemble, assemble and replace the pump to be tested, and improves the testing convenience.

[0013] 3、The test tool of the application can meet the long time use under high temperature test conditions. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a sectional view of the embedded plunger pump test tool of the application;

[0015] Figure 2 is an outline schematic view of the embedded plunger pump test tool of the application;

[0016] In the figure, 1 is an oil outlet joint, 2 is a pump to be tested, 3 is a front shell, 4 is a pipe joint, 5 is a rear shell, 6 is a rear cover, 7 is a transition shaft, 8 is a bearing, 9 is a shaft seal, and 10 is a sealing element. DETAILED DESCRIPTION

[0017] The application will be further described below in combination with the drawings and examples.

[0018] The application is an embedded plunger pump high pressure test tool, which comprises a shell, a cavity in the shell, and a pump to be tested 2 installed in the cavity; a pipe joint 4 is arranged on the upper surface of the shell, the pipe joint 4 is in communication with the cavity, and the pipe joint 4 is connected with an oil inlet and an oil return respectively;

[0019] The pump to be tested is connected with an external motor through a transition shaft, one end of the transition shaft is connected with the output end of the external motor, and the other end is connected with the rotating shaft of the pump to be tested 2.

[0020] Further, the shell comprises a front shell 3 and a rear shell 5; the front shell 3 is fixed on the rear shell 5 through screws, the rear shell 5 is fixed on a test bench mounting seat through screws, and the pump to be tested 2 is installed inside the shell; the front shell 3 and the rear shell 5 are in a detachable assembly structure.

[0021] Further, the rear end surface of the shell is provided with a rear cover 6, a shaft seal 9, a transition shaft 7 and a bearing 8; the transition shaft 7 is located at the other end of the oil outlet joint of the pump to be tested 2 and is coaxial with the oil outlet joint.

[0022] Further, the tool is provided with accessories, the accessories include an oil outlet joint 1, a pipe joint 4, a sealing element 10; the oil outlet joint 1 is installed on an oil outlet of the pump to be tested 2; the pipe joint 4 is installed on the upper surface of the rear shell and is connected with an oil inlet and an oil return respectively; the sealing element 10 is used for sealing the shell and the transition shaft.

[0023] Further, the rear cover 6 is installed on the rear shell 5 through screws, the shaft seal 9 is located at the middle position of the rear cover 6, the transition shaft 7 passes through the shaft seal 9, and the shaft seal 9 is limited by a snap spring.

[0024] The embodiment is a test tool for an embedded plunger pump, which is composed of a shell, a rear cover, a transition shaft, accessories and the pump to be tested 2, as shown in the drawings. Figure 1 , Figure 2 The shell includes a front shell 3 and a rear shell 5; the rear cover includes a rear cover 6 and a shaft seal 9; the transition shaft includes a transition shaft 7 and a bearing 8; and the accessories include an oil outlet joint 1, a pipe joint 4 and a sealing element 10.

[0025] The front shell 3 is fixed on the rear shell 5 through screws, the rear shell 5 is fixed on a test bench mounting seat through screws, and the pump to be tested 2 is installed inside the shell and is circumferentially positioned through a groove on the rear shell 5 corresponding to the pump to be tested 2.

[0026] The rear cover 6 is installed on the rear shell 5 through screws, and the shaft seal 9 is limited by a snap spring.

[0027] The transition shaft 7 and the bearing 8 are installed in the bearing mounting hole of the rear shell 5 and are limited by the rear cover 6, and the transition shaft 7 passes through the shaft seal 9.

[0028] The oil outlet joint 1 is installed on the oil outlet of the pump to be tested 2.

[0029] As shown in the drawings, the pipe joint 4 is installed on the rear shell and is connected with an oil inlet and an oil return respectively. Figure 2

[0030] The sealing element 10 is used for sealing the shell and the transition shaft.

[0031] During operation, the tool is installed on an oil pump test bench mounting station as a whole, a test bench motor transmits power to the pump to be tested 2 through the transition shaft 7, so that the transmission shaft of the pump to be tested 2 rotates, oil liquid enters the cavity of the tool through the pipe joint 4 after being pressurized by the booster pump, the pump to be tested 2 is immersed in the oil liquid, and the pump to be tested 2 discharges high-pressure oil liquid from the oil outlet through the oil outlet joint 1. The tool can ensure that the oil liquid does not leak during high-temperature test, and only the oil outlet joint 1 and the front shell 3 need to be disassembled when the pump to be tested 2 is disassembled and replaced, which is convenient and fast.​

Claims

1. An embedded plunger pump high pressure test fixture, characterized in that, The tool comprises a shell, a cavity in the shell, and a pump (2) to be tested installed in the cavity; an accessory is arranged on the tool, and the accessory comprises an oil outlet joint (1), two pipe joints (4), and a sealing member (10); the oil outlet joint (1) is installed at an oil outlet of the pump (2) to be tested; The two pipe joints (4) are installed on the surface of the rear shell and are connected with an oil inlet and an oil return respectively, and the two pipe joints (4) are communicated with the cavity; The pump to be tested is connected with an external motor through a transition shaft, one end of the transition shaft is connected with the output end of the external motor, and the other end is connected with the rotating shaft of the pump (2) to be tested; The sealing member (10) is used for sealing the shell and the transition shaft; The shell comprises a front shell (3) and a rear shell (5); the front shell (3) is fixed on the rear shell (5) through screws, the rear shell (5) is fixed on a test bench mounting base through screws, and the pump (2) to be tested is installed in the shell; The front shell (3) and the rear shell (5) are in a detachable assembly structure; The rear end surface of the shell is provided with a rear cover (6), a shaft seal (9), a transition shaft (7), and a bearing (8); the transition shaft (7) is located at the other end of the oil outlet joint of the pump (2) to be tested and is coaxial with the oil outlet joint.

2. The high-pressure test tool for the embedded plunger pump according to claim 1, characterized in that The rear cover (6) is installed on the rear shell (5) through screws, the shaft seal (9) is located at the middle position of the rear cover (6), the shaft seal (9) allows the transition shaft (7) to pass through, and the shaft seal (9) is limited by a snap spring; The transition shaft (7) is connected with the bearing (8) and is installed in the bearing mounting hole of the rear shell (5), and is limited by the rear cover (6).

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