CN219139327U

CN219139327U - Plunger pump efficiency testing device

Info

Publication number: CN219139327U
Application number: CN202320047859.2U
Authority: CN
Inventors: 张开年; 郭�东; 龚金宏
Original assignee: Wuhan Jiaqi Xinyang Technology Development Co ltd
Current assignee: Wuhan Jiaqi Xinyang Technology Development Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-06-06
Anticipated expiration: 2033-01-09

Abstract

The utility model provides a plunger pump efficiency testing device which comprises a first plunger pump, a second plunger pump and a third plunger pump which are connected in parallel, wherein a motor is connected in series on the first plunger pump, a motor controller is arranged on the motor, and the motor controller is connected with a pressure gauge through an oil circuit; the motor drives the plunger pump to work, the motor controller collects working current of the motor and output pressure of the plunger pump, and the proportional overflow valve can adjust pressure of a pipeline, so that output current of the motor is collected under different pressure states, and whether efficiency of the plunger pump is in a normal working range is judged.

Description

Plunger pump efficiency testing device

Technical Field

The utility model relates to the technical field of electronic hydraulic pressure, in particular to a plunger pump efficiency testing device.

Background

In the field of electronic hydraulic line control braking systems, in order to enable a high-pressure accumulator to obtain high-pressure brake fluid, a plunger pump is driven by a motor to work in general, brake fluid is continuously injected into the accumulator, and the more the volume of the accumulator is unchanged, the more the brake fluid is charged, the higher the oil pressure in the accumulator is;

on a hydraulic line control brake booster with energy storage, the working efficiency of a plunger pump can influence the pressure building speed of an energy storage device, high-pressure brake fluid of the energy storage device can be continuously released into the booster for braking during normal continuous braking, and the safety of braking of a vehicle can be influenced when the pressure building speed cannot keep up with the braking frequency; it is therefore particularly important to detect the operating efficiency of the plunger pump.

At present, the efficiency test of the plunger pump is obtained by calculating the preset rotating speed and the brake fluid displacement, and the control of the rotating speed of the motor is related to the relatively complex structure. For example, the patent number is CN113886994A, the patent name is a method, a system, a terminal and a computer storage medium for testing the efficiency of a plunger pump, the set pressure of an ESC assembly is controlled according to a preset rotating speed, the brake fluid displacement of the plunger pump under the preset pressure is obtained, and the working efficiency of the plunger pump is calculated according to the preset rotating speed and the brake fluid displacement.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a plunger pump efficiency testing device which can test the working efficiency of a single plunger pump or a plurality of plunger pumps and is simple to operate.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a plunger pump efficiency testing device which comprises a first plunger pump, a second plunger pump and a third plunger pump which are connected in parallel, wherein a motor is connected in series on the first plunger pump, a motor controller is arranged on the motor, and the motor controller is connected with a pressure gauge through an oil circuit.

Further, the first plunger pump is connected with a first one-way valve in series, and a first stop valve is connected to the first one-way valve in parallel.

Further, the second plunger pump is connected with a second one-way valve in series, and a second stop valve is connected to the second one-way valve in parallel.

Further, the third plunger pump is connected with a third one-way valve in series, and a third stop valve is connected to the third one-way valve in parallel.

Further, the outflow ends of the first check valve, the second check valve and the third check valve are connected with the pressure gauge.

Further, the outflow end of the pressure gauge is connected with the proportional overflow valve.

Further, the outflow end of the proportional overflow valve is communicated with the oilcan.

Further, the flow ends of the first stop valve, the second stop valve and the third stop valve are communicated with the oilcan.

Further, the outflow end of the oil can is communicated with the first plunger pump, the second plunger pump and the third plunger pump through oil ways.

The beneficial effects of the utility model are as follows: the motor drives the plunger pump to work, the motor controller collects working current of the motor and output pressure of the plunger pump, and the proportional overflow valve can adjust pressure of a pipeline, so that output current of the motor is collected under different pressure states, and whether efficiency of the plunger pump is in a normal working range is judged.

Drawings

FIG. 1 is a block diagram of a plunger pump efficiency test apparatus according to the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1, a plunger pump efficiency testing device includes a first plunger pump 101, a second plunger pump 102 and a third plunger pump 103 connected in parallel, a motor 2 is connected in series on the first plunger pump 101, a motor controller 3 is installed on the motor 2, and the motor controller 3 is connected with a pressure gauge 4 through an oil path.

The first plunger pump 101 is connected in series with a first check valve 501, and a first stop valve 601 is connected in parallel to the first check valve 501.

The second plunger pump 102 is connected in series with a second check valve 502, and a second stop valve 602 is connected in parallel with the second check valve 502.

The third plunger pump 103 is connected in series with a third check valve 503, and a third stop valve 603 is connected in parallel to the third check valve 503.

In a specific embodiment, if only the hydraulic pressures of the first plunger pump 101 and the second plunger pump 102 need to be measured, the third stop valve 603 may be opened, and the hydraulic oil of the third plunger pump 103 may be directly returned to the oiler 8 through the line of the third stop valve 603, and the hydraulic pressures of the first plunger pump 101 and the second plunger pump 102 may be measured because the first plunger pump 101, the second plunger pump 102, and the third plunger pump 103 are disposed in parallel.

In a specific embodiment, the first check valve 501, the second check valve 502 and the third check valve 503 are used to prevent the hydraulic oil from flowing back into the plunger pump.

The outflow ends of the first check valve 501, the second check valve 502 and the third check valve 503 are connected with the pressure gauge 4.

In a specific embodiment, the pressure gauge 4 is used to measure the pressure of the hydraulic oil of the first plunger pump 101, the second plunger pump 102, and the third plunger pump 103.

The outflow end of the pressure gauge 4 is connected with a proportional overflow valve 7.

In a specific embodiment, the proportional relief valve 7 can be adjusted in oil pressure according to the pressure of the respective plunger pumps.

The outflow end of the proportional overflow valve 7 is communicated with an oilcan 8.

The flow ends of the first stop valve 601, the second stop valve 602 and the third stop valve 603 are communicated with the oilcan 8.

The outflow end of the oil can 8 is communicated with the first plunger pump 101, the second plunger pump 102 and the third plunger pump 103 through oil passages.

In order to facilitate understanding of the above technical solutions of the present utility model, the following details are about the working principle or operation mode of the present utility model in the actual process:

when the motor controller 3 sends out a working signal to the motor 2, the motor 2 can drive the first plunger pump 101, the second plunger pump 102 and the third plunger pump 103 to work at the same time, the first stop valve 601, the second stop valve 602 and the third stop valve 603 are all in a closed state, the first check valve 501, the second check valve 502 and the third check valve 503 respectively receive the management high pressure of the first plunger pump 101, the second plunger pump 102 and the third plunger pump 103 which are independent pipelines and are all opened, the pressure gauge 4 monitors the high-pressure brake fluid pressure output by the first plunger pump 101, the second plunger pump 102 and the third plunger pump 103, and the proportional overflow valve 7 regulates the high-pressure brake fluid output by the three plunger pumps;

when the motor 2 punches three plunger pumps simultaneously, because each plunger pump is in an independent working state, if only one or two plunger pumps need to be tested for efficiency, only a stop valve on the plunger pump which does not need to work is required to be opened, so that the plunger pump of the non-working pipeline outputs brake fluid to return to the oilcan 1, and at the moment, the non-working one-way valve is closed due to the pressure of the brake fluid of the output communication pipeline.

In the efficiency test of the plunger pump, the number of the plunger pumps can be set and tested through the motor controller to obtain output efficiency, so that whether the efficiency of the plunger pump is qualified or not is judged.

The required current is obtained by monitoring the pressure, and the working efficiency of the plunger pump is judged by the relation between the current and the pressure. The required current is low for high pressure, and the working efficiency of the plunger pump is high.

The foregoing examples merely illustrate embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present patent is to be determined by the appended claims.

Claims

1. A plunger pump efficiency testing device is characterized in that: including parallelly connected first plunger pump (101), second plunger pump (102) and third plunger pump (103), establish ties on first plunger pump (101) and be equipped with motor (2), install motor controller (3) on motor (2), motor controller (3) are connected with manometer (4) through the oil circuit.

2. The plunger pump efficiency testing device according to claim 1, wherein: the first plunger pump (101) is connected with a first one-way valve (501) in series, and a first stop valve (601) is connected to the first one-way valve (501) in parallel.

3. The plunger pump efficiency testing device according to claim 2, wherein: the second plunger pump (102) is connected with a second one-way valve (502) in series, and a second stop valve (602) is connected to the second one-way valve (502) in parallel.

4. A plunger pump efficiency testing apparatus according to claim 3, wherein: the third plunger pump (103) is connected with a third one-way valve (503) in series, and a third stop valve (603) is connected to the third one-way valve (503) in parallel.

5. The plunger pump efficiency testing device according to claim 4, wherein: the outflow ends of the first check valve (501), the second check valve (502) and the third check valve (503) are connected with the pressure gauge (4).

6. The plunger pump efficiency testing device according to claim 5, wherein: the outflow end of the pressure gauge (4) is connected with a proportional overflow valve (7).

7. The plunger pump efficiency testing device according to claim 6, wherein: the outflow end of the proportional overflow valve (7) is communicated with an oil pot (8).

8. The plunger pump efficiency testing apparatus of claim 7, wherein: the flow ends of the first stop valve (601), the second stop valve (602) and the third stop valve (603) are communicated with the oilcan (8).

9. The plunger pump efficiency testing apparatus of claim 8, wherein: the outflow end of the oil pot (8) is communicated with the first plunger pump (101), the second plunger pump (102) and the third plunger pump (103) through oil ways.