Automatic control device for water pump hydrostatic test

Abstract

The utility model provides an automatic control device for a water pump hydrostatic test, which comprises a water tank and a test board arranged above the water tank, a motor assembly and a pressure maintaining test module are fixedly arranged on the test board, and a high-pressure water pump is additionally arranged between the motor assembly and the pressure maintaining test module; the pressure maintaining test module comprises a high-pressure connecting block, a simulation pressure sensor and a pressure transmitter are arranged on the high-pressure connecting block, the signal output end of the simulation pressure sensor and the signal output end of the pressure transmitter are communicated with the signal receiving end of the control terminal, and the signal output end of the control terminal is communicated with the signal receiving end of the motor and the signal receiving end of the warning lamp unit. According to the utility model, pressure data in the pressure maintaining process can be transmitted to the control terminal through the simulation pressure sensor and the pressure transmitter which are arranged in the added pressure maintaining test module, and the generation and storage of a pressure curve can be completed, so that the recording process does not need to be completed manually, and the test efficiency of the pressure maintaining process can be effectively improved; and labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrostatic test equipment, in particular to an automatic control device for the hydrostatic test of a water pump. Background Technique

[0002] At present, during the hydrostatic test of a water pump, it completely relies on manual timing and reading and recording of meters, and it is necessary to manually pay attention to the timing and recording situation at all times. Due to the existence of human factors, there are varying degrees of differences in the hydrostatic test process of each water pump, making the test standards of the water pumps not unified enough; and when leakage occurs, it is necessary to manually judge the leakage location according to the obtained data or experience, thus affecting the progress of the hydrostatic test process of the water pump. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects existing in the prior art. The utility model proposes an automatic control device for the hydrostatic test of a water pump, which reduces the influence of human factors on the hydrostatic test process of the water pump.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: an automatic control device for the hydrostatic test of a water pump, characterized in that it includes a water tank and a test bench arranged above the water tank. An electric motor assembly and a pressure-holding test module are fixedly arranged on the test bench, and a high-pressure water pump is arranged between the electric motor assembly and the pressure-holding test module;

[0005] The pressure-holding test module is communicated with the output end of the high-pressure water pump. The pressure-holding test module includes a high-pressure connection block. A simulation pressure sensor and a pressure transmitter are sequentially arranged in the direction away from the high-pressure water pump based on the high-pressure connection block. The signal output ends of the simulation pressure sensor and the pressure transmitter are communicated with the signal receiving end of the control terminal, and the signal output end of the control terminal is communicated with the signal receiving ends of the electric motor and the warning lamp unit.

[0006] Further, the simulation pressure sensor and the pressure transmitter are respectively arranged at both ends of the high-pressure connection block. A joint assembly is further included. The joint assembly includes a pneumatic ball valve and an olive joint arranged at the end of the pneumatic ball valve, and is used for connecting the high-pressure connection block to the output end of the high-pressure water pump. The pneumatic ball valve is regulated by the control terminal.

[0007] Further, a return water assembly is further included. The return water assembly is also connected to the output end of the high-pressure water pump. The return water assembly is arranged opposite to the joint assembly and includes a return water pipe and a ball valve assembly arranged on the return water pipe.

[0008] Further, a display is further included. The display is signal-connected to the control terminal.

[0009] Furthermore, a warning light unit is also included. The warning light unit is connected to the signal output end of the control terminal. The warning light unit includes a plurality of parallel indicator lights for indicating the result of the pressure holding test.

[0010] Furthermore, a pressure test module is also included. The pressure test module is communicated with the high-pressure water pump. The pressure test module includes a safety valve and a pressure gauge.

[0011] Compared with the prior art, the beneficial effects of the present utility model include: The added pressure holding test module completes the automatic test and recording process during the pressure holding process. The provided analog pressure sensor and pressure transmitter can transmit the pressure data during the pressure holding process to the control terminal and complete the generation and storage of the pressure curve. There is no need for manual recording, which can effectively improve the test efficiency of the pressure holding process and save labor costs. Description of the Drawings

[0012] The disclosure of the present utility model will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the protection scope of the present utility model. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0013] Figure 1 Schematically shows the overall structure of the automatic control device for the water pressure test of the water pump.

[0014] Reference numerals in the figure: 1 - water tank, 2 - motor assembly, 3 - high-pressure water pump, 4 - high-pressure connection block, 5 - analog pressure sensor, 6 - pressure transmitter, 7 - pneumatic ball valve, 8 - oil nipple joint, 9 - return water pipe, 10 - ball valve assembly, 11 - safety valve, 12 - pressure gauge. Detailed Embodiments

[0015] It is easy to understand that according to the technical solution of the present utility model, without changing the essential spirit of the present utility model, those of ordinary skill in the art can propose various structural ways and implementation ways that can be mutually replaced. Therefore, the following detailed embodiments and the accompanying drawings are only exemplary descriptions of the technical solution of the present utility model and should not be regarded as all of the present utility model or as a limitation or restriction on the technical solution of the present utility model.

[0016] An automatic control device for the water pressure test of a water pump is as Figure 1As shown in the figure, it includes a water tank 1 and a test bench arranged above the water tank 1. An electric motor assembly 2 and a pressure-holding test module are fixedly arranged on the test bench. A high-pressure water pump 3 to be tested is arranged between the electric motor assembly 2 and the pressure-holding test module. A pressure test module is arranged thereon. The pressure test module is respectively communicated with the input end and the output end of the aforementioned high-pressure water pump 3, and includes a safety valve 11 and a pressure gauge 12. They are arranged on the pipeline communicated with the input end and the output end of the high-pressure water pump 3 to measure the pressure therein and ensure that the water pressure is within the safe range during the test process by means of the safety valve 11.

[0017] The pressure-holding test module is also arranged based on the output end of the high-pressure water pump 3. It includes a high-pressure connection block 4. A simulated pressure sensor 5 and a pressure transmitter 6 are successively arranged in the direction away from the high-pressure water pump 3 based on the high-pressure connection block 4. The signal output ends of the simulated pressure sensor 5 and the pressure transmitter 6 are communicated with the signal receiving end of the control terminal. The signal output end of the control terminal is communicated with the signal receiving ends of the electric motor and the warning light unit. The water pressure data during the pressure-holding process is transmitted to the control terminal through the simulated pressure sensor 5 and the pressure transmitter 6 arranged on the high-pressure connection block 4 to generate a pressure curve and save it.

[0018] It should be noted that the aforementioned simulated pressure sensor 5 and pressure transmitter 6 are respectively arranged at both ends of the high-pressure connection block 4. It also includes a joint assembly. The joint assembly includes a pneumatic ball valve 7 and an olive union 8 arranged at the end of the pneumatic ball valve 7, which is used to connect the high-pressure connection block 4 to the output end of the high-pressure water pump 3, and the on-off between the high-pressure water pump 3 and the high-pressure connection block 4 can be regulated through the pneumatic ball valve 7, and the sealed connection between the pneumatic ball valve 7 and the high-pressure connection block 4 and the high-pressure water pump 3 is completed through the olive union 8. A return water assembly is also arranged. The return water assembly is also connected to the output end of the high-pressure water pump 3. Since both the return water assembly and the joint assembly are connected to the output end of the high-pressure water pump 3, a tee can be used to connect to the output end of the high-pressure water pump 3, and the aforementioned return water assembly and joint assembly are respectively installed on the other two joints of the tee. The aforementioned return water assembly includes a return water pipe 9 and a ball valve assembly 10 arranged on the return water pipe 9. The on-off of the return water pipe 9 is regulated through the ball valve assembly 10, and the other end of the return water pipe 9 is immersed in the water tank 1.

[0019] It also includes a display and a warning light unit. The display is signal-connected to the control terminal. In some embodiments, the display can be a touch screen, which can serve as a human-machine interaction interface while displaying, and complete the issuance of some operation instructions. After the issued operation instructions are sent to the control terminal, the corresponding device is driven to act by the control terminal; the warning light unit is connected to the signal output end of the control terminal, and includes red, green, and yellow warning lights. The aforementioned red, green, and yellow warning lights are connected in parallel, and different warning lights are lit according to different test processes or results. For example, the yellow warning light represents that manual installation and testing are required, the green warning light represents that the test is passed, and the red warning light represents that the test fails. It should be noted that the control center involved in the present utility model can be Siemens S7-1200, or other models of PLC, as long as it can achieve the above functions.

[0020] Hydrostatic test operation

[0021] During the hydrostatic test process, first install the water pump to be tested on the test bench. After starting the test, open the pressure valve to complete the pressure relief process and then close the pressure valve. Then, the control terminal regulates (the pressure holding test module) to input high-pressure liquid into the water pump to be tested to complete the test process. During the test process, by regulating the pressure of the liquid input into the pump body to be tested, the stability and accuracy of the test are ensured, and the control terminal monitors and records the test process for subsequent analysis and processing.

[0022] The hydrostatic test is carried out according to the following steps:

[0023] Input high-pressure water into the water pump to be tested, monitor the pressure change during the test process, and record it. After the pressure indicated by the pressure gauge is stable, automatically record the current pressure test value.

[0024] Close the valve at the water inlet, wait for a period of time (usually 5 minutes), and automatically record the pressure value at this time to observe whether the pressure is stable.

[0025] Open the valve at the water inlet again, start the pressure source again, when the pressure reaches the set value, and record the current pressure test value after the pressure is stable.

[0026] Repeat the above steps until the pressure reaches the set maximum value, continuously observe the pressure test situation of the water pump to ensure the accuracy and reliability of the test results.

[0027] The technical scope of the present utility model is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present utility model, and these deformations and modifications should all fall within the protection scope of the present utility model.

Claims

1. An automatic control device for water pump hydraulic test, characterized in that: It comprises a water tank (1) and a test bench arranged above the water tank (1), a motor assembly (2) and a pressure-maintaining test module are fixedly arranged on the test bench, and a high-pressure water pump (3) is provided between the motor assembly (2) and the pressure-maintaining test module; The pressure-maintaining test module is connected to the output end of the high-pressure water pump (3), and the pressure-maintaining test module comprises a high-pressure connection block (4). An analog pressure sensor (5) and a pressure transmitter (6) are sequentially arranged in a direction away from the high-pressure water pump (3) based on the high-pressure connection block (4). The signal output ends of the analog pressure sensor (5) and the pressure transmitter (6) are connected to the signal receiving end of the control terminal, and the signal output end of the control terminal is connected to the signal receiving end of the motor and the warning light unit.

2. The automatic control device for water pump hydraulic test according to claim 1 is characterized in that: The analog pressure sensor (5) and the pressure transmitter (6) are respectively arranged at the two ends of the high-pressure connection block (4), and also include a joint assembly, the joint assembly includes a pneumatic ball valve (7) and an oil-connecting joint (8) arranged at the end of the pneumatic ball valve (7), which is used to connect the high-pressure connection block (4) to the output end of the high-pressure water pump (3), and the pneumatic ball valve (7) is regulated by a control terminal.

3. The automatic control device for water pump hydraulic test according to claim 2 is characterized in that: It also includes a water return assembly, which is also connected to the output end of the high-pressure water pump (3). The water return assembly is arranged away from the joint assembly and includes a water return pipe (9) and a ball valve assembly (10) arranged on the water return pipe (9).

4. The automatic control device for water pump hydraulic test according to claim 1, characterized in that: A display is also included, and the display is connected to the control terminal signal.

5. The automatic control device for water pump hydraulic test according to claim 1, characterized in that: It also includes a warning light unit, which is connected to the signal output end of the control terminal. The warning light unit includes a plurality of parallel indicator lights for indicating the pressure holding test result.

6. The automatic control device for water pump hydraulic test according to claim 1, characterized in that: It also includes a pressure test module, which is connected to the high-pressure water pump (3) and includes a safety valve (11) and a pressure gauge (12).

Images