CN204301943U - Gas pressure regulator, governor detection air-channel system - Google Patents

Abstract

The utility model provides a gas circuit system for the detection of a gas pressure regulator. The gas source is the air supply for the air tightness detection circuit. Each air tightness detection circuit includes a cylinder for sealing the output port of the workpiece to be tested. After going through a pressure regulating valve and a pressure gauge to the input port of the workpiece to be tested, a differential pressure sensor is installed between the output port and the input port of each workpiece to be measured, and two input ports are provided on the gas circuit of the output port and the input port. The first electromagnetic valve installed in parallel is provided with the second electromagnetic valve between it and the pressure gauge. Pressure sensors are connected with PLC. The utility model controls the air supply between the inlet and the outlet of the workpiece through the PLC to judge its airtightness through the pressure difference between the two, with high precision and high efficiency, and reduces the labor intensity of workers; the setting of multiple detection circuits further improves the Detection efficiency; the setting of the direct pressure sensor is convenient for monitoring the pressure of the gas supply line.

Description

Gas circuit system for gas pressure regulator detection

technical field

The utility model belongs to the field of detection equipment for gas pressure regulators, in particular to a gas circuit system for detection of gas pressure regulators.

Background technique

The gas pressure regulator is one of the key equipment to ensure the normal transmission and distribution of gas. Its function is to adjust the higher inlet pressure to the lower outlet pressure, and automatically keep the gas pressure constant at the outlet according to the change of gas demand and working conditions. in the set value. The safety and reliability of pressure regulating performance not only affects the quality of gas supply, but also is closely related to the safety of people's lives and national property. Unqualified pressure regulator products will cause safety accidents. For example, high closing pressure will cause gas leakage, which can easily lead to vicious accidents such as fire and personnel poisoning; excessive outlet pressure will cause incomplete combustion of gas, resulting in a large amount of gas Toxic gases such as carbon monoxide endanger people's health. Therefore, the pressure regulation performance test of the voltage regulator product is very important.

The airtight performance of the gas pressure regulator is particularly important. The existing detection device needs to manually test the airtight performance of different parts multiple times, which is labor-intensive and time-consuming while ensuring the quality of the inspection. The detection efficiency is low, and the labor intensity of the workers is high. How to design an efficient and high-quality detection gas circuit system has become a research topic for those skilled in the art.

Utility model content

The problem to be solved by the utility model is to provide an efficient and high-quality detection gas circuit system for gas pressure regulators.

In order to solve the above problems, the technical solution adopted by the utility model is: a gas circuit system for gas pressure regulator detection, including a gas source, a gas source processing part, and at least two air tightness detection circuits. The air source processing part supplies air to the air tightness detection circuit after processing, and each air tightness detection circuit includes a plugging cylinder, which is used to block the output port of the workpiece to be tested. The air source passes through the first pressure regulating valve and the first pressure gauge to the input port of the workpiece to be measured, and a differential pressure sensor is arranged between the output port of each workpiece to be measured and the input port, and the output A first solenoid valve is provided on the gas path of the port and the input port, and the input ends of every two first solenoid valves are arranged in parallel, and the gap between the every two first solenoid valves and the first pressure gauge A second solenoid valve is provided, and the treated gas source passes through the one-way valve and the third solenoid valve to the blocked cylinder, and the first solenoid valve, the second solenoid valve, the third solenoid valve and the differential pressure sensor are all connected to the PLC .

A direct pressure sensor is provided between the second solenoid valve and the first pressure gauge, and the direct pressure sensor is connected to the PLC.

A second pressure gauge is provided between the one-way valve and the third solenoid valve.

A speed regulating valve is provided between the blocking cylinder and the third solenoid valve.

Each air-tightness detection circuit is provided with two blocking cylinders arranged in parallel.

A second pressure regulating valve is provided between the one-way valve and the pressure gauge.

The air source processing part includes a water filter, an oil filter, a third pressure regulating valve, a third pressure gauge, a pressure switch and a residual pressure release valve.

The first pressure regulating valve is a precision pressure regulating valve.

The second pressure regulating valve is an ordinary pressure regulating valve.

The third pressure regulating valve is an ordinary pressure regulating valve.

The advantages and positive effects of the utility model are: the utility model controls the air supply between the inlet and the outlet of the workpiece through the PLC, and judges its airtightness through the pressure difference between the two, with high precision and high efficiency, and reduces the labor of workers. Strength; the setting of multiple detection circuits further improves the detection efficiency; the setting of the direct pressure sensor is convenient for monitoring the pressure of the gas supply line; the setting of the second pressure gauge is convenient for observing the pressure on each circuit; the speed control valve The setting can control the speed of the cylinder; the plugging cylinder set in parallel can detect the pressure regulator with two outlets and improve the adaptability; the setting of the second pressure regulating valve is convenient to adjust the blocking force of the sealing cylinder; The source treatment part guarantees the quality of the gas source, the control of the residual pressure and pressure, and the opening and closing control of the gas source; the precision pressure regulating valve can accurately adjust the test pressure; the ordinary pressure regulating valve can save costs under the condition of ensuring the control accuracy.

Description of drawings

Fig. 1 is a schematic diagram of the gas circuit of the present utility model;

In the figure: QY air source SLF water filter YLF oil filter PR06 third pressure regulating valve PR05 first pressure regulating valve PR01, PR02, PR03, PR04 second pressure regulating valve PM06 third pressure gauge PM01-PM04 second pressure gauge PM05 First pressure gauge DF01-DF04 Check valve DCF01-DCF04 Third solenoid valve P5 Direct pressure sensor DCF05-DCF08 Second solenoid valve DCF09-DCF16 First solenoid valve P1-P4 Differential pressure sensor FD01-FD04 Blocking cylinder GJ01- The input port of GJ04 workpiece.

Detailed ways

The utility model is now described in detail according to the accompanying drawings. As shown in Figure 1, a gas circuit system for gas pressure regulator detection includes a gas source QY, a gas source processing part, and at least two airtightness detection circuits. The air source QY supplies air to the air tightness detection circuit after being processed by the air source processing part, and each air tightness detection circuit includes one of the sealing cylinders FD01-FD04, and the sealing cylinder FD01 One of -FD04 is used to block the output port of the workpiece to be tested, and the processed gas source QY passes through the first pressure regulating valve PR05 and the first pressure gauge PM05 to the input port GJ01-GJ04 of the workpiece to be tested, One of the differential pressure sensors P1-P4 is provided between the output port of each workpiece under test and the input port, and first solenoid valves DCF09-DCF16 are provided on the air circuit between the output port and the input port. One of them, the input ends of every two first solenoid valves DCF09-DCF16 are arranged in parallel, and a second solenoid valve DCF05-DCF08 is provided between every two first solenoid valves and the first pressure gauge PM05 In one of them, the processed gas source QY passes through one of the one-way valves DF01-DF04 and the corresponding third solenoid valve DCF01-DCF04 to the corresponding blocking cylinder FD01-FD04, the first solenoid valve DCF09-DCF16, The second solenoid valves DCF05-DCF08, the third solenoid valves DCF01-DCF04 and the differential pressure sensors P1-P4 are all connected to the PLC.

A direct pressure sensor P5 is provided between the second solenoid valves DCF05-DCF08 and the first pressure gauge PM05, and the direct pressure sensor P5 is connected to the PLC.

Between one of the one-way valves DF01-DF04 and the corresponding third solenoid valve DCF01-DCF04, second pressure gauges PM01-PM04 are correspondingly provided.

A speed regulating valve is provided between one of the blocking cylinders FD01-FD04 and the corresponding third solenoid valve DCF01-DCF04.

Each air tightness detection circuit is equipped with two parallel-connected blocking cylinders (FD01-FD04 each has two cylinders).

Between one of the one-way valves DF01-DF04 and the corresponding second pressure gauges PM01-PM04, there are corresponding second pressure regulating valves PR01-PR04.

The air source processing part includes a water filter SLF, an oil filter YLF, a third pressure regulating valve PR06, a third pressure gauge PM06, a pressure switch and a residual pressure release valve connected in sequence.

The first pressure regulating valve PR05 is a precision pressure regulating valve.

The second pressure regulating valves PR01-PR04 are common pressure regulating valves.

The third pressure regulating valve PR06 is a common pressure regulating valve.

This embodiment has 4 detection circuits, and each detection circuit has two blocking cylinders. The first solenoid valve DCF09-DCF16 is a two-position two-barrel solenoid valve, the second solenoid valve DCF05-DCF08 is a two-position three-way solenoid valve, and the third solenoid valve DCF01-DCF04 is a two-position five-way solenoid valve. There is gas circulation among them, and the four circuits are isolated by one-way valve DF01-DF04 to improve system stability.

The following is an example of a gas path detection circuit to introduce the detection process: the processed gas source QY is divided into two ways to supply gas, one way is supplied to the blocking cylinder FD01-FD04 to block the output port of the workpiece, and the other is supplied to the input of the workpiece Ports GJ01-GJ04, differential pressure sensors P1-P4 compare the pressure at both ends, if there is a difference, it means that there is a problem, if there is no difference, it means that the air tightness is passed, through the solenoid valve to control the on and off of the air circuit, to ensure the test Each gas circuit detection circuit can be tested independently without affecting each other.

The embodiments of the present utility model have been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the scope of the present utility model should still belong to the scope covered by this patent.

Claims (10)

1. a gas pressure regulator, governor detection air-channel system, it is characterized in that: comprise source of the gas, source of the gas processing section, article at least two, air-leakage test loop, described source of the gas is described air-leakage test loop air feed after the process of described source of the gas processing section, every bar air-leakage test loop includes shutoff cylinder, described shutoff cylinder is used for the delivery outlet of shutoff measured workpiece, described source of the gas after treatment arrives the input port of measured workpiece after the first pressure regulator valve and the first Pressure gauge, differential pressure pick-up is provided with between each described measured workpiece delivery outlet and described input port, the gas circuit of described delivery outlet and described input port is equipped with the first magnetic valve, the input of every two described first magnetic valves is arranged in parallel, the second magnetic valve is provided with between described every two the first magnetic valves and described first Pressure gauge, treated source of the gas through check valve and the 3rd magnetic valve to shutoff cylinder, flow speed control valve is provided with between described shutoff cylinder and described 3rd magnetic valve, described first magnetic valve, second magnetic valve, 3rd magnetic valve is all connected with PLC with differential pressure pick-up.

2. gas pressure regulator, governor detection gas circuit according to claim 1, it is characterized in that: be provided with vertical compression sensor between described second magnetic valve and described first Pressure gauge, described vertical compression sensor is connected with described PLC.

3. gas pressure regulator, governor detection air-channel system according to claim 1, is characterized in that: be provided with the second Pressure gauge between described check valve and described 3rd magnetic valve.

4. gas pressure regulator, governor detection air-channel system according to claim 1, is characterized in that: be provided with flow speed control valve between described shutoff cylinder and described 3rd magnetic valve.

5. gas pressure regulator, governor detection air-channel system according to claim 1, is characterized in that: every bar air-leakage test loop is provided with two shutoff cylinders be arranged in parallel.

6. gas pressure regulator, governor detection air-channel system according to claim 5, is characterized in that: be provided with the second pressure regulator valve between described check valve and described Pressure gauge.

7. the gas pressure regulator, governor detection gas circuit according to any one of claim 1-6, is characterized in that: described source of the gas processing section comprises water filter, oil strainer, the 3rd pressure regulator valve, the 3rd Pressure gauge, pressure switch and residual voltage relief valve.

8. gas pressure regulator, governor detection gas circuit according to claim 1, is characterized in that: described first pressure regulator valve is precise pressure regulating valve.

9. gas pressure regulator, governor detection gas circuit according to claim 6, is characterized in that: described second pressure regulator valve is common pressure regulator valve.

10. gas pressure regulator, governor detection gas circuit according to claim 7, is characterized in that: described 3rd pressure regulator valve is common pressure regulator valve.