High-frequency test device for plunger assembly

Abstract

The utility model discloses a high-frequency test device for a plunger assembly. The high-frequency test device comprises a mounting seat assembly, a transmission assembly and a clamp assembly, the mounting seat assembly comprises a vertical mounting seat, a mounting block is arranged on one side of the mounting seat, a plunger hole is formed in the top surface of the mounting block, an oil inlet and an oil outlet are formed in the side wall of the mounting block, and the oil inlet and the oil outlet are both communicated with the plunger hole; the transmission assembly comprises a coupler located above the mounting block, the coupler penetrates through the mounting base and is rotationally connected with the mounting base, an eccentric shaft sleeve is arranged at one end of the coupler, an eccentric shaft is arranged on the eccentric shaft sleeve, and the axis of the eccentric shaft is parallel to the axis of the coupler and forms an eccentric distance with the axis of the coupler; the clamp assembly comprises a connecting rod, the upper end of the connecting rod is rotationally connected with the eccentric shaft, and a separable clamping plate is arranged at the lower end of the connecting rod. The utility model has the advantage that the performance evaluation accuracy and comprehensiveness of the plunger assembly can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to plunger pump test equipment field especially relates to a high frequency test device for plunger pump plunger assembly. BACKGROUND

[0002] The plunger assembly includes a plunger and a slide shoe, and the slide shoe and the plunger are hingedly connected. The performance of the plunger assembly has a crucial influence on the working efficiency and reliability of the entire plunger pump, and therefore, it is necessary to conduct a simulation test on the plunger assembly.

[0003] In actual operation, the plunger not only performs high-speed linear reciprocating motion, but also has specific relative motion between the plunger and the slide shoe, and the plunger and the slide shoe have relative swing. Meanwhile, the hydraulic pressure borne by the plunger under different working conditions also has great difference. The existing test device either cannot accurately simulate the actual motion mode of the plunger assembly or cannot effectively simulate the hydraulic force of the plunger under various working conditions, resulting in that the performance evaluation of the plunger assembly is not accurate and comprehensive, which brings difficulties to the quality control and improvement of the plunger pump. SUMMARY

[0004] The utility model discloses a high frequency test device for plunger assembly.

[0005] The utility model discloses a high frequency test device for plunger assembly, including installation seat subassembly, transmission subassembly and fixture subassembly.

[0006] The installation seat subassembly includes a vertical installation seat, one side of the installation seat is provided with a mounting block, a plunger hole is formed in the top surface of the mounting block, an oil inlet and an oil outlet are formed in the side wall of the mounting block, and the oil inlet and the oil outlet are communicated with the plunger hole.

[0007] The transmission subassembly includes a shaft coupling located above the mounting block, the shaft coupling is rotatably connected with the installation seat, an eccentric shaft sleeve is arranged at one end of the shaft coupling, an eccentric shaft is arranged on the eccentric shaft sleeve, and the axis of the eccentric shaft is parallel to the axis of the shaft coupling and forms an eccentric distance.

[0008] The fixture subassembly includes a connecting rod, the upper end of the connecting rod is rotatably connected with the eccentric shaft, and a detachable clamping plate is arranged at the lower end of the connecting rod.

[0009] In the foregoing high frequency test device for plunger assembly, the shaft coupling and the installation seat are provided with a first bearing and a skeleton oil seal, and the skeleton oil seal and the eccentric shaft sleeve are respectively located on the two sides of the first bearing.

[0010] In the foregoing high frequency test device for plunger assembly, the connecting rod and the eccentric shaft are provided with a second bearing.

[0011] The high-frequency test device for the plunger assembly, the connecting rod is screwed to the clamping plate.

[0012] The high-frequency test device for the plunger assembly, an annular groove is arranged on the side wall of the mounting block opposite to the mounting seat, and the annular groove is coaxial with the shaft coupling.

[0013] The high-frequency test device for the plunger assembly, a first bearing cover is arranged on the side of the first bearing facing the eccentric sleeve, and the first bearing cover is screwed to the mounting seat.

[0014] The high-frequency test device for the plunger assembly, the eccentric sleeve is connected to the shaft coupling by means of a key.

[0015] The high-frequency test device for the plunger assembly, a clamping screw is arranged on the eccentric sleeve and connected to the shaft coupling.

[0016] The high-frequency test device for the plunger assembly, a second bearing cover, a stop washer and a nut are arranged on the outer side of the second bearing in sequence, the nut is connected to the eccentric shaft, and the second bearing cover is penetrated by the eccentric shaft.

[0017] The high-frequency test device for the plunger assembly, the mounting block is made of tin-lead bronze.

[0018] Compared with the prior art, the plunger assembly is connected to the slide shoe through the clamp assembly, the plunger is connected to the plunger hole in the mounting block, the high-frequency rotary motion of the shaft coupling and the eccentric sleeve is converted into the high-frequency linear reciprocating motion of the plunger, and the relative swing exists between the slide shoe and the plunger during the reciprocating motion of the plunger, so that the actual motion mode of the plunger assembly is accurately simulated. The inlet and outlet oil ports are arranged in the plunger hole in the mounting block, so that the plunger hole can be connected to the pressure oil, the pressure of the pressure oil is changed, and the hydraulic force of the plunger under various working conditions is accurately simulated. Since the actual motion mode of the plunger assembly and the hydraulic force of the plunger under various working conditions are accurately simulated, the evaluation of the performance of the plunger assembly is accurate and comprehensive, and the quality control and improvement of the plunger pump are facilitated.

[0019] In conclusion, the plunger assembly performance evaluation accuracy and comprehensiveness can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of the utility model.

[0021] Figure 2 is a front view of the utility model.

[0022] The signs in the drawings are: 100 - mounting seat assembly, 101 - mounting seat, 102 - skeleton oil seal, 103 - first bearing, 104 - mounting block, 105 - plunger hole, 106 - oil inlet, 107 - oil outlet, 108 - annular groove, 110 - first bearing cover; 200 - transmission assembly, 201 - shaft coupling, 202 - eccentric shaft sleeve, 203 - second bearing, 204 - set screw, 205 - second bearing cover, 206 - stop washer, 207 - nut, 208 - eccentric shaft; 300 - clamp assembly, 301 - connecting rod, 302 - clamp plate, 303 - plunger assembly. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the drawings and examples, but it is not as the basis for limiting the utility model.

[0024] Example. A high frequency test device for plunger assembly, as shown in Figure 1 , including mounting seat assembly 100, transmission assembly 200 and clamp assembly 300.

[0025] The mounting seat assembly 100 includes a vertical mounting seat 101, and the bottom side of the mounting seat 101 is provided with a mounting block 104 made of tin-lead bronze material. Tin-lead bronze has good wear resistance and self-lubricating property, which can improve the service life of the mounting block 104. The top surface of the mounting block 104 is provided with a plunger hole 105, and the side wall of the mounting block 104 is provided with an oil inlet 106 and an oil outlet 107, both of which are communicated with the plunger hole 105. The side wall of the upper part of the mounting seat 101 away from the mounting block 104 is provided with an annular groove 108.

[0026] The transmission assembly 200 includes a shaft coupling 201 located above the mounting block 104, which passes through the mounting seat 101. The shaft coupling 201 is coaxial with the annular groove 108, and one end of the shaft coupling 201 is provided with an eccentric shaft sleeve 202 located above the mounting block 104. The eccentric shaft sleeve 202 is connected with the shaft coupling 201 by means of a flat key, and the eccentric shaft sleeve 202 is provided with a set screw 204 connected with the shaft coupling 201. The eccentric shaft sleeve 202 is provided with an eccentric shaft 208, and the axis of the eccentric shaft 208 is parallel to the axis of the shaft coupling 201 and forms an eccentric distance. The first bearing 103 and the skeleton oil seal 102 are arranged between the shaft coupling 201 and the mounting seat 101, and the skeleton oil seal 102 is arranged on both sides of the first bearing 103. The side of the first bearing 103 facing the eccentric shaft sleeve 202 is provided with an annular first bearing cover 110, which is screw-connected with the mounting seat 101. The first bearing cover 110 prevents the first bearing 103 from falling out.

[0027] The clamp assembly 300 comprises a connecting rod 301, a second bearing 203 is arranged between the connecting rod 301 and the eccentric shaft 208, a lower end of the connecting rod 301 is provided with a clamp plate 302, and the connecting rod 301 is screw-connected with the clamp plate 302. An outer side of the second bearing 203 is sequentially provided with a second bearing cover 205, a stop washer 206 and a nut 207, the nut 207 is connected with the eccentric shaft 208, and the second bearing cover 205 is penetrated by the eccentric shaft 208. The second bearing cover 205 plays a role of preventing the second bearing 203 from falling out.

[0028] The installation of the plunger assembly 303 on the test device: as shown in Figure 2 the plunger of the plunger assembly 303 is inserted into the plunger hole 105, the diameter of the plunger is matched with the diameter of the plunger hole 105, and the slide shoe of the plunger assembly 303 is clamped between the clamp plate 302 and the connecting rod 301.

[0029] The method for using the test device comprises the following five steps:

[0030] S100, device placement and initial connection;

[0031] S200, power introduction preparation;

[0032] S300, power transmission and motion conversion start;

[0033] S400, plunger assembly motion implementation;

[0034] S500, pressure adjustment and force simulation;

[0035] S100, device placement and initial connection: the test device is placed in the oil tank as a whole (the test device is submerged in the oil tank, so that each part of the test device is fully lubricated), and one end of the shaft coupling 201 extends out of the side wall of the oil tank. A sealing ring is placed in the annular groove 108 on the connection surface between the mounting seat 101 and the oil tank to form a sealing structure, so as to prevent oil in the oil tank from leaking from the connection part between the mounting seat 101 and the oil tank. The mounting seat 101 is connected and fixed to the inner wall of the oil tank by using screws to ensure that the mounting seat 101 is stably installed on the side wall of the oil tank.

[0036] S200, power introduction preparation: an electric motor is arranged outside the oil tank, and the shaft coupling 201 is fixed to the output end of the electric motor. The oil inlet 106 and the oil outlet 107 are respectively connected to the oil inlet pipeline and the oil outlet pipeline, and valves are arranged on the oil inlet pipeline and the oil outlet pipeline. The oil inlet pipeline is connected to a hydraulic pump, so that the oil inlet pressure and the oil outlet pressure of the plunger assembly can be controlled subsequently.

[0037] S300, power transmission and motion conversion start: the external electric motor is started, the electric motor outputs rotary power, the shaft coupling 201 drives the eccentric shaft sleeve 202 to rotate, the eccentric shaft 208 rotates around the axis of the shaft coupling 201 to drive the upper end of the connecting rod 301 to move in a circular motion.

[0038] The S400, the plunger assembly movement realizes that the plunger assembly 303 is driven under the link 301 in the plunger hole 105 4 linear reciprocating motion, thereby realizing the movement mode of the crank slider structure, simulating the motion state of the plunger in the plunger pump.

[0039] The S500, pressure regulation and force simulation: by adjusting the working parameters of the pump, valve and other equipment connected on the inlet and outlet oil pipeline, the flow size and pressure value of the liquid in the inlet and outlet are changed. The pressure of the plunger hole 105 changes with the adjustment of the external equipment, simulates the hydraulic force of the plunger under different working conditions, completes the performance test and analysis of the plunger assembly.

Claims

1. A high-frequency testing device for plunger assemblies, characterized in that: It includes a mounting base assembly (100), a transmission assembly (200), and a clamping assembly (300); The mounting base assembly (100) includes a vertical mounting base (101), a mounting block (104) is provided on one side of the mounting base (101), a plunger hole (105) is provided on the top surface of the mounting block (104), and an oil inlet (106) and an oil outlet (107) are provided on the side wall of the mounting block (104), and both the oil inlet (106) and the oil outlet (107) are connected to the plunger hole (105). The transmission assembly (200) includes a coupling (201) located above the mounting block (104). The coupling (201) passes through the mounting base (101) and is rotatably connected to the mounting base (101). One end of the coupling (201) is provided with an eccentric bushing (202). An eccentric shaft (208) is provided on the eccentric bushing (202). The axis of the eccentric shaft (208) is parallel to the axis of the coupling (201) and forms an eccentricity. The clamp assembly (300) includes a connecting rod (301), the upper end of which is rotatably connected to an eccentric shaft (208), and the lower end of which is provided with a separable clamping plate (302).

2. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: A first bearing (103) and a skeleton oil seal (102) are provided between the coupling (201) and the mounting base (101). The skeleton oil seal (102) and the eccentric bushing (202) are located on both sides of the first bearing (103).

3. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: A second bearing (203) is provided between the connecting rod (301) and the eccentric shaft (208).

4. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: The connecting rod (301) is screwed to the clamping plate (302).

5. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: The mounting base (101) has an annular groove (108) on its side wall facing away from the mounting block (104), and the annular groove (108) is coaxial with the coupling (201).

6. The high-frequency testing apparatus for plunger assemblies according to claim 2, characterized in that: The first bearing (103) has an annular first bearing cover (110) on the side facing the eccentric bushing (202), and the first bearing cover (110) is screwed to the mounting base (101).

7. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: The eccentric bushing (202) is connected to the coupling (201) by a key.

8. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: The eccentric bushing (202) is provided with a set screw (204) for connecting the coupling (201).

9. The high-frequency testing apparatus for plunger assemblies according to claim 3, characterized in that: The second bearing (203) is provided with a second bearing cover (205), a stop washer (206) and a nut (207) in sequence on the outside. The nut (207) is connected to the eccentric shaft (208), and the second bearing cover (205) is passed through by the eccentric shaft (208).

10. The high-frequency testing apparatus for plunger assemblies according to claim 1, characterized in that: The mounting block (104) is made of tin-lead bronze.

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