CN111912570A

CN111912570A - Automatic withstand voltage test system

Info

Publication number: CN111912570A
Application number: CN202010965194.4A
Authority: CN
Inventors: 王焜; 盛忠毅; 刘涛
Original assignee: Ebara Machinery Zibo Co Ltd
Current assignee: Ebara Machinery Zibo Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-11-10

Abstract

The invention provides an automatic pressure-resistant test system. According to the technical scheme, the pressure transmitter is used for detecting the system pressure in real time, and the PLC controls the operation state of the pressurizing pump according to the current pressure, the preset target pressure and the preset pressure-resistant time, so that the pressure-resistant test process is automatically completed. Specifically, before the test, the target pressure and the pressure-resistant time are set in the system through a human-computer interface. And after the pressurizing pump is started, the PLC reads the pressure value of the pressure transmitter in real time and compares the pressure value with a target value. And when the actual value is larger than or equal to the target value, the PLC automatically stops the pressurizing pump. And then, starting timing, and starting pressure relief when the time is more than or equal to the pressure-resistant time. The test was completed. The whole test process is unattended. The invention realizes the automation of the pressure test with less equipment investment, not only reduces the manpower occupation, but also keeps good test effect.

Description

Automatic withstand voltage test system

Technical Field

The invention relates to the technical field of assembly tests, further relates to a pressure resistance test of a product, and particularly relates to an automatic pressure resistance test system.

Background

The pressure test of the pressure-bearing parts is an important means for checking the tightness of products and ensuring the safe operation of the products.

At present, the pressure test is generally completed by manual operation, namely, the pressurizing pump is started to be pressurized by manual operation, and in the pressurizing process, an operator pays attention to the condition of leakage of the reading of the pressure gauge and the appearance of a tested part. The testing time is in direct proportion to the size of the part, and the larger the part is, the longer the testing time is needed; for example, the test time of some large-scale pump products can even reach 2-3 hours. During this time, the operator needs to continuously pay attention to the test pressure to ensure that the pressurizing pump is immediately stopped when the pressure resistance value reaches the test requirement; this not only requires the operator to be constantly focused, but also takes up a significant amount of labor time.

Disclosure of Invention

The invention aims to provide an automatic pressure-resistant test system aiming at the technical defects of the prior art so as to solve the technical problems that the existing pressure-resistant test cannot be automatically executed and needs to occupy a large amount of labor time.

Another technical problem to be solved by the present invention is how to develop a device capable of automatically performing a pressure resistance test.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

the utility model provides an automatic withstand voltage test system, includes the presser, the product that awaits measuring, pressure transmitter, PLC controller, basin, and wherein, the presser passes through the tube coupling to the product that awaits measuring, is connected with the bypass pipe on the pipeline between presser and the product that awaits measuring pressure transmitter is connected with on the bypass pipe, pressure transmitter and PLC controller communication connection are equipped with the relay on the power supply line of presser, relay and PLC controller communication connection, the delivery pipe of presser is connected to the basin.

Preferably, the test device further comprises a tee joint, the tee joint is connected to a pipeline between the pressing machine and a product to be tested, and the bypass pipe is connected to the tee joint.

Preferably, a relief valve and a safety valve are connected to the bypass pipe, respectively.

Preferably, the water tank is provided with a water feeding pipe, the water feeding pipe is connected with a float switch, and the float switch is in communication connection with the PLC.

Preferably, a pressure maintaining check valve is connected to a pipeline between the press and the product to be tested.

Preferably, the system further comprises a computer, network cards, a network switch, cameras and a database, wherein the computer is provided with 2 network cards, the PLC and the cameras are respectively in communication connection with one of the network cards through the network switch, and the database is in communication connection with the other network card.

Preferably, a printer is provided outside the computer.

Preferably, the product to be detected is a water pump to be detected, and a pressure gauge is arranged on the water pump to be detected.

In addition, based on the system structure of the invention, the real-time pressure value in the test process can be automatically recorded, the test report can be automatically issued after the test is finished, the video in the test process can be automatically stored, and the invention has outstanding technical advantages.

Drawings

FIG. 1 is a system block diagram of the present invention;

in the figure:

1. the device comprises a pressing machine 2, a product 3 to be tested, a pressure transmitter 4 and a PLC controller

5. Sink 6, tee bend 7, relief valve 8, relief valve

9. Water supply pipe 10, float switch 11, pressure maintaining check valve 12 and computer

13. Network card 14, network switch 15, camera 16 and database

17. A printer 18 and a pressure gauge.

Detailed Description

Hereinafter, specific embodiments of the present invention will be described in detail. Well-known structures or functions may not be described in detail in the following embodiments in order to avoid unnecessarily obscuring the details. Approximating language, as used herein in the following examples, may be applied to identify quantitative representations that could permissibly vary in number without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Example 1

The utility model provides an automatic withstand voltage test system, as shown in figure 1, includes the presser 1, the product 2 that awaits measuring, pressure transmitter 3, PLC controller 4, basin 5, wherein, presser 1 is connected to the product 2 that awaits measuring through the pipe connection, is connected with the bypass pipe on the pipeline between presser 1 and the product 2 that awaits measuring be connected with pressure transmitter 3 on the bypass pipe, pressure transmitter 3 and PLC controller 4 communication connection are equipped with the relay on the power supply line of presser 1, relay and PLC controller 4 communication connection, the delivery pipe of presser 1 is connected to basin 5.

Meanwhile, the device also comprises a tee joint 6, wherein the tee joint 6 is connected to a pipeline between the presser 1 and the product 2 to be tested, and the bypass pipe is connected to the tee joint 6.

The bypass pipe is connected with a pressure relief valve 7 and a safety valve 8 respectively. The device is used for avoiding overlarge system pressure and plays a role in overvoltage protection.

The water tank 5 is provided with a water feeding pipe 9, the water feeding pipe 9 is connected with a float switch 10, and the float switch 10 is in communication connection with the PLC 4. The water feeding function can be automatically realized according to the liquid level condition in the water tank.

And a pressure maintaining check valve 11 is connected on a pipeline between the pressing machine 1 and the product 2 to be tested. To avoid backflow problems.

The system comprises a computer 12, network cards 13, a network switch 14, cameras 15 and a database 16, wherein the computer 12 is provided with 2 network cards 13, the PLC 4 and the cameras 15 are respectively in communication connection (subnet) with one of the network cards 13 through the network switch 14, and the database 16 is in communication connection (company intranet) with the other network card 13. Based on the structure, the functions of automatically recording the real-time pressure value in the test process, automatically issuing a test report after the test is finished, automatically storing the video in the test process and the like can be realized.

A printer 17 is provided outside the computer 12. Can be used for printing the test report.

The product 2 to be detected is a water pump to be detected, and a pressure gauge is arranged on the water pump to be detected.

Example 2

The utility model provides an automatic withstand voltage test system, includes the presser 1, the product 2 that awaits measuring, pressure transmitter 3, PLC controller 4, basin 5, wherein, presser 1 is connected to the product 2 that awaits measuring through the pipe connection, is connected with the bypass pipe on the pipeline between presser 1 and the product 2 that awaits measuring be connected with pressure transmitter 3 on the bypass pipe, pressure transmitter 3 and PLC controller 4 communication connection are equipped with the relay on the power supply line of presser 1, relay and PLC controller 4 communication connection, the delivery pipe of presser 1 is connected to basin 5.

The embodiments of the present invention have been described in detail, but the description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. Any modification, equivalent replacement, and improvement made within the scope of the application of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic withstand voltage test system, its characterized in that includes presser (1), awaits measuring product (2), pressure transmitter (3), PLC controller (4), basin (5), wherein, presser (1) is connected to the product (2) that awaits measuring through the pipe connection, is connected with the bypass pipe on the pipeline between presser (1) and the product (2) that awaits measuring be connected with pressure transmitter (3) on the bypass pipe, pressure transmitter (3) and PLC controller (4) communication connection are equipped with the relay on the power supply line of presser (1), relay and PLC controller (4) communication connection, the delivery pipe of presser (1) is connected to basin (5).

2. The automatic pressure resistance test system according to claim 1, further comprising a tee joint (6), wherein the tee joint (6) is connected to a pipeline between the presser (1) and the product (2) to be tested, and the bypass pipe is connected to the tee joint (6).

3. The automatic pressure resistance test system according to claim 1, wherein a pressure relief valve (7) and a safety valve (8) are connected to the bypass pipe, respectively.

4. The automatic pressure resistance test system according to claim 1, wherein the water tank (5) is provided with a water supply pipe (9), a float switch (10) is connected to the water supply pipe (9), and the float switch (10) is in communication connection with the PLC controller (4).

5. An automatic pressure withstanding test system according to claim 1, characterized in that a pressure maintaining check valve (11) is connected to the pipeline between the press (1) and the product (2) to be tested.

6. The automatic pressure-resistant test system of claim 1, further comprising a computer (12), network cards (13), a network switch (14), a camera (15) and a database (16), wherein 2 network cards (13) are arranged on the computer (12), the PLC controller (4) and the camera (15) are respectively in communication connection with one of the network cards (13) through the network switch (14), and the database (16) is in communication connection with the other network card (13).

7. The automatic pressure resistance test system according to claim 6, wherein a printer (17) is provided outside the computer (12).

8. The automatic pressure-resistant test system of claim 1, wherein the product (2) to be tested is a water pump to be tested, and a pressure gauge is arranged on the water pump to be tested.