CN206362505U - A kind of industrial valve device for detecting sealability - Google Patents

Abstract

The utility model belongs to the field of industrial instrument valves, in particular to an industrial valve sealing performance detection device. It is characterized in that the industrial valve sealing detection device includes air source, filter 1, precision pressure regulating valve, gas storage tank, throttle valve, solenoid valve 1, solenoid valve 2, industrial valve standard parts, solenoid valve 3, differential pressure Transmitter, microprocessor, input and output interface, sound and light alarm, filter 2, pressure regulating valve, solenoid valve 4, fixture, industrial valve under test and solenoid valve 5. The detection device of the utility model has a simple and practical structure, avoids errors caused by manual operation and work fatigue, and improves the accuracy of test results; the detection device replaces manual detection, which greatly improves production efficiency.

Description

An industrial valve leak detection device

technical field

The utility model relates to an industrial valve sealing performance detection device.

Background technique

In the current industrial valve tightness testing technology, the method of testing the leakage tightness of the valve and the tightness of the end face of the valve seal is as follows:

1. Leakage tightness: The staff seals the air inlet and outlet of the valve through a clamp, and then injects a certain pressure of gas inside. After standing for a few minutes, read the reading of the U-shaped pressure gauge or digital pressure gauge for the first time, and then wait for 5 minutes. , Read the reading of the U-shaped pressure gauge or digital pressure gauge again. If the reading does not drop, it is determined that the valve has good leakage sealing performance.

2. The sealing performance of the end face of the valve seal: the staff seals the valve inlet through the clamp, adjusts the valve to the closed state, and then injects a certain pressure of gas inside, and after standing for a few minutes, read the U-shaped pressure gauge or digital for the first time After waiting for 5 minutes, read the reading of the U-shaped pressure gauge or digital pressure gauge again. If the reading difference is not greater than the leakage required by the national standard, it is determined that the sealing performance of the valve seal end face of the valve is good.

In the method of testing the leak tightness of the valve and the tightness of the end face of the valve seal in the above-mentioned prior art, since the reading of the test instrument is observed by the naked eye, and the switching of the two tightness tests requires manual operation, when the working time is long, Errors caused by the naked eye readings of the staff and errors caused by work fatigue will affect the accuracy of test results and test efficiency. All of these pose potential safety hazards to the safe production of enterprises, which urgently need to be resolved.

Utility model content

Aiming at the technical problems existing in the prior art, the purpose of the utility model is to provide a technical solution of an industrial valve tightness detection device.

The said industrial valve airtightness detection device is characterized in that the industrial valve airtightness detection device includes an air source, a filter one, a precision pressure regulating valve, a gas storage tank, a throttle valve, a solenoid valve one, and a solenoid valve two , industrial valve standard parts, solenoid valve 3, differential pressure transmitter, microprocessor, input and output interface, sound and light alarm, filter 2, pressure regulating valve, solenoid valve 4, fixture, industrial valve under test and solenoid valve Fives;

The air source 1 is connected to the filter 2, the filter 2 is connected to the pressure regulating valve, the pressure regulating valve is connected to the solenoid valve 4, the solenoid valve 4 is connected to the fixture, and the fixture is clamped on the inlet and outlet of the industrial valve to be tested. The solenoid valve five is connected to the air outlet of the industrial valve under test;

The other path of the gas source is connected to the filter one, the filter one is connected to the precision pressure regulating valve, the precision pressure regulating valve is connected to the gas storage tank, the gas storage tank is connected to the throttle valve, and the throttle valve is connected to the solenoid valve one and the solenoid valve respectively Two connections, the solenoid valve one is connected with the industrial valve standard part, the solenoid valve two is connected with the industrial valve to be tested, the solenoid valve three is respectively connected with the industrial valve standard part and the industrial valve to be tested, and the differential pressure transmitter is respectively connected with the industrial valve standard part Connect with the industrial valve to be tested.

The aforementioned industrial valve sealing performance detection device is characterized in that the differential pressure transmitter is also connected to a microprocessor, the microprocessor is connected to an input and output interface, and the input and output interface is connected to an audible and visual alarm.

The said a kind of industrial valve airtight detection device is characterized in that the clamp is connected with the air outlet of the industrial valve under test through a baffle plate with a silicone gasket, and the clamp and the air inlet of the industrial valve under test are sealed with a silicone sealant. The flange connection of the gasket, the flange connection is a flange type floating joint, and the flange type floating joint is driven by the cylinder and the linear bearing.

The utility model injects detection gas into the industrial valve standard part and the industrial valve to be tested, and after the gas pressure reaches balance, disconnects the electromagnetic valve three connected between the intake solenoid valve and the standard part and the industrial valve to be tested, and passes the differential pressure The electrical signal output by the transmitter judges the pressure change between the standard part and the industrial valve under test, and the test result can be prompted through the sound and light alarm through the input and output interface, so as to detect the leak tightness of the valve and the tightness of the end face of the valve seal . The detection device of the utility model has a simple and practical structure, avoids errors caused by manual operation and work fatigue, and improves the accuracy of test results; the detection device is used instead of manual detection, which greatly improves production efficiency.

Description of drawings

Fig. 1 is the utility model flow chart;

Fig. 2 is a schematic diagram of the utility model fixture;

Among them: air source 1, filter one 2, precision pressure regulating valve 3, gas storage tank 4, throttle valve 5, solenoid valve one 6, solenoid valve two 7, industrial valve standard parts 8, solenoid valve three 9, differential pressure Transmitter 10, microprocessor 11, input and output interface 12, sound and light alarm 13, filter 2 14, pressure regulating valve 15, solenoid valve 4 16, fixture 17, industrial valve under test 18, solenoid valve 5 19.

detailed description

Now in conjunction with the accompanying drawings of the description, the utility model example is described in detail:

As shown in Figure 1, when performing the leak tightness test, the air source 1 enters the solenoid valve 4 16 through the filter 2 14 and the pressure regulating valve 15, and the solenoid valve 4 16 controls the start of the fixture 17, and the fixture 17 controls the industrial valve to be tested. The air inlet and outlet of 18 are clamped and sealed. At this time, the air source 1 enters the precision pressure regulating valve 3 through another filter-2. The precision pressure regulating valve 3 adjusts the pressure of the air source 1 to 23kPa and injects it into the air storage tank 4, and then passes through Throttle valve 5 is controlled to an appropriate flow range for detection. At the beginning of the detection, the industrial valve 18 to be inspected is opened, solenoid valve 1 6, solenoid valve 2 7 and solenoid valve 3 8 are opened simultaneously, solenoid valve 5 19 is closed, and the detection gas is injected into the industrial valve at the same time. In the valve standard part 8 and the industrial valve 18 to be tested, after waiting for a certain period of time, the detection gas pressure in the industrial valve standard part 8 and the industrial valve 18 to be tested reaches equilibrium, and the solenoid valve 1 6, solenoid valve 2 7 and solenoid valve 3 8 are closed at the same time, and the differential pressure transmitter 10 starts to work. After waiting for a certain period of time again, the differential pressure transmitter 10 transmits the collection results to the microprocessor 11, and the microprocessor 11 will process the incoming data, make a judgment and The result is transmitted to the input and output interface 12 and the audible and visual alarm 13 to issue an audible and visual alarm.

The clamp of the utility model only needs to be able to clamp the industrial valve 18 to be tested, so its structure can be diversified; for example, the air outlet of the clamp 17 and the industrial valve 18 to be tested passes through a baffle plate with a silicone gasket Connection, the fixture 17 and the air inlet of the industrial valve 18 to be tested are connected through a flange with a silicone gasket. The flange is connected to a flange-type floating joint. The flange-type floating joint is driven by a cylinder and a linear bearing. The movement of the cylinder The industrial valve 18 under test can be clamped and unclamped.

When performing the sealing test of the end face of the valve seal, solenoid valve 1 6, solenoid valve 2 7, solenoid valve 3 8 and solenoid valve 5 19 are opened at the same time, the industrial valve 18 under inspection is closed, and the test gas is injected into the industrial valve standard part 8 and the tested industrial valve at the same time. Inspect the industrial valve 18, after waiting for a certain period of time, the industrial valve standard part 8 and the detected gas pressure in the industrial valve 18 to be tested reach equilibrium, and the solenoid valve 1 6, solenoid valve 2 7 and solenoid valve 3 8 are simultaneously closed, and the differential pressure The transmitter 10 starts to work, and after waiting for a certain period of time, the differential pressure transmitter 10 transmits the collection results to the microprocessor 11, and the microprocessor 11 performs calculations on the incoming data, makes judgments and transmits the results to the input and output interfaces 12 and sound and light alarm 13 send sound and light alarm.

The detection device of the utility model only needs to allow the differential pressure transmitter to output the signal, and the microprocessor 11, the input and output interface 12 and the sound and light alarm device 13 at the back belong to the prior art, are very mature, and can be used as a complete set directly, here No longer.

Claims (3)

1. An industrial valve sealing detection device, characterized in that the industrial valve sealing detection device includes an air source (1), a filter (2), a precision pressure regulating valve (3), an air storage tank (4), Throttle valve (5), solenoid valve one (6), solenoid valve two (7), industrial valve standard parts (8), solenoid valve three (9), differential pressure transmitter (10), microprocessor (11 ), input and output interface (12), sound and light alarm (13), filter two (14), pressure regulating valve (15), solenoid valve four (16), fixture (17), industrial valve under test (18) and solenoid valve five (19); The air source (1) is connected to the second filter (14), the second filter (14) is connected to the pressure regulating valve (15), the pressure regulating valve (15) is connected to the fourth solenoid valve (16), and the fourth solenoid valve (16 ) is connected with the fixture (17), the fixture (17) is clamped at both ends of the air inlet and the air outlet of the industrial valve under test (18), and the solenoid valve five (19) is connected with the air outlet of the industrial valve under test (18); The other path of the gas source (1) is connected to the filter one (2), the filter one (2) is connected to the precision pressure regulating valve (3), the precision pressure regulating valve (3) is connected to the gas storage tank (5), and the gas is stored The tank (5) is connected with the throttle valve (5), the throttle valve (5) is respectively connected with the solenoid valve one (6) and the solenoid valve two (7), and the solenoid valve one (6) is connected with the industrial valve standard part (8) connection, solenoid valve two (7) is connected with the industrial valve under test (18), solenoid valve three (9) is connected with the industrial valve standard part (8) and the industrial valve under test (18) respectively, and the differential pressure transmitter (10 ) are respectively connected with the industrial valve standard part (8) and the tested industrial valve (18). 2. An industrial valve leak detection device according to claim 1, characterized in that the differential pressure transmitter (10) is also connected to the microprocessor (11), and the microprocessor (11) is connected to the input and output The interface (12) is connected, and the input and output interface (12) is connected with the sound and light alarm (13). 3. An industrial valve leak detection device according to claim 1, characterized in that the fixture (17) is connected to the air outlet of the industrial valve (18) to be tested through a baffle with a silicone gasket, and the fixture ( 17) It is connected to the air inlet of the tested industrial valve (18) through a flange with a silicone gasket. The flange is connected to a flange-type floating joint, and the flange-type floating joint is driven by a cylinder and a linear bearing.