WO2020151367A1

WO2020151367A1 - Simulated comprehensive test system for gas sealing performance

Info

Publication number: WO2020151367A1
Application number: PCT/CN2019/121691
Authority: WO
Inventors: 张强; 孙绍安; 杨伟红
Original assignee: 山东科技大学
Priority date: 2019-01-21
Filing date: 2019-11-28
Publication date: 2020-07-30
Also published as: CN109765004A

Abstract

A simulated comprehensive test system for gas sealing performance, comprising a compartment (2) for placing a gas sealing element (12) to be tested, a gas pressure sensor (11) and an identified-gas detector (10) being provided on an inner wall of the compartment (2), a refrigerating system being provided in the compartment (2); and a computer terminal (26) is provided outside the compartment (2), is connected to the gas pressure sensor (11), the identified-gas detector (10) and the refrigerating system, and is used for analyzing the pressure data and leaked gas content that are fed back, maintaining a stable set temperature value and gas pressure value in the compartment (2), and acquiring various leakage parameters of the gas sealing element (12). By adjusting the atmospheric pressure and temperature in the compartment (2) where the gas sealing element (12) to be tested is located, the purpose of accelerating the leakage from the gas sealing element (12) to be tested is achieved by strengthening the test condition, without changing the failure mechanism of the gas sealing element (12) to be tested, thereby reducing test time and test costs.

Description

A comprehensive testing system for gas sealing performance simulation

Technical field

The invention belongs to the technical field of gas sealing performance detection, and in particular relates to a gas sealing performance simulation comprehensive detection system.

Background technique

At this stage, most of the sealing performance testing methods for gas sealing components are relatively simple, and the measurement objects are relatively single. Also, due to the limitations of experimental methods and equipment, there are often phenomena such as insufficient test results and high test costs. Moreover, there is currently no comprehensive accelerated test method for the sealing performance of gas sealing components in the industry. Therefore, for some gas sealing components that need to be used for a long time, when testing their sealing performance, it is often necessary to conduct long-term testing and experimental analysis. , To judge whether the product is qualified, but this will undoubtedly greatly increase the measurement cost.

Summary of the invention

Based on the above shortcomings of the prior art, the technical problem solved by the present invention is to provide a gas sealing performance simulation comprehensive detection system based on multiple accelerated test methods, which can obtain various leakage parameters of the tested gas sealing element in a relatively short time. , And then evaluate its sealing performance.

In order to solve the above technical problems, the present invention is achieved through the following technical solutions: the present invention provides a gas sealing performance simulation comprehensive detection system, including a cabin for placing the gas sealing element to be tested, and the inner wall of the cabin is provided with Gas pressure sensor, used to detect the pressure data in the cabin;

An identification gas detector is provided on the inner wall of the cabin to detect the content of the identification gas in the gas leaked from the gas sealing element in the cabin;

A refrigeration system is provided in the cabin to accelerate the reduction of the temperature of the tested gas sealing element;

A computer terminal is provided outside the cabin, which is connected to the gas pressure sensor, the identification gas detector and the refrigeration system, and is used to analyze the feedback pressure data and the leakage gas content and maintain the cabin at a stable set temperature Value and gas pressure value to quickly obtain the leakage parameters of the gas sealing element.

From the above, the present invention mainly adjusts the atmospheric pressure and temperature in the cabin where the tested gas sealing element is located, and then, without changing the failure mechanism of the tested gas sealing element, strengthens the test conditions to achieve the tested gas sealing element The purpose of accelerating leakage, thereby reducing experimental test time and reducing test costs.

Optionally, the refrigeration system includes a refrigerant tank, a compressor, a condenser, and a refrigeration pipe, and the refrigerant tank, the compressor, and the condenser are located between the inner and outer walls of the cabin;

One end of the compressor is connected to the refrigerant tank through a refrigerant pipe, and the other end is connected to the condenser through a refrigerant output pipe and a refrigerant return pipe.

Further, the refrigeration pipe is a circular pipe, located on the inner wall of the cabin, and evenly arranged from top to bottom.

Optionally, an air extraction hole is provided at the bottom of the cabin, and the air extraction hole penetrates the cabin and is connected to the gas filter through a pipeline;

One end of the gas filter is connected to the suction hole through a pipeline, and the other end is connected to a high-pressure gas pump.

Optionally, a temperature sensor is provided in the cabin, connected to the computer terminal, and used to measure the internal temperature of the cabin and transmit its temperature value to the computer terminal.

Further, the bottom of the cabin is provided with a power jack that provides power support for the electrical components in the entire cabin.

Optionally, the bottom of the cabin body is provided with a data hole for data intermediary between the cabin body and the computer terminal.

Further, a seal support seat for supporting and fixing the gas sealing element under test is provided in the cabin.

From the above, the present invention uses the existing technical conditions to create several effective conditions that can accelerate the leakage rate of the gas sealing element, and then realize the accelerated test of the leakage parameters of the sealing element, and then calculate the measured gas sealing element through scientific and reasonable calculations. Effective service life, or make factory standard inspection for it. The invention can equivalently simulate the long-term leakage process of the gas tight seal through certain technical means, and measure its various leakage parameters, greatly shorten the construction period of traditional life prediction and factory inspection, improve work efficiency and save enterprise costs , Provide a certain method and reference for the field of gas leak detection.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented in accordance with the content of the specification, and to make the above and other objectives, features and advantages of the present invention more obvious and understandable. , The following is a detailed description in conjunction with preferred embodiments and accompanying drawings.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly introduced below.

Fig. 1 is an external structure diagram of a gas sealing performance simulation comprehensive detection system according to a preferred embodiment of the present invention;

Figure 2 is a top view of Figure 1;

Fig. 3 is an internal structure diagram of a gas sealing performance simulation comprehensive detection system according to a preferred embodiment of the present invention;

Fig. 4 is a diagram of the actual working structure of the gas sealing performance simulation comprehensive detection system of the preferred embodiment of the present invention.

In the figure, 1-cabin foot; 2-cabin body; 3-air extraction hole; 4-data hole; 5-power jack; 6-cabin door; 7-cabin roof; 8-electric light; 9-refrigeration tube; Identification gas detector; 11-gas pressure sensor; 12-tested gas sealing element; 13-seal support seat; 14-condenser; 15-compressor; 16-condensate pipeline; 17-refrigerant tank; 18- Gas filter; 19-internal power supply line; 20-internal data transmission line; 21-refrigerant return pipe; 22-refrigerant output pipe; 23-exhaust pipe; 24-external data transmission line; 25-external power supply line; 26-computer terminal; 27-high pressure air pump; 28-external power supply; 29-temperature sensor.

detailed description

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. As a part of this specification, the principles of the present invention are explained through examples. Other aspects, features and advantages of the present invention will become clear through the detailed description. In the referenced drawings, the same or similar components in different drawings are represented by the same reference numerals.

Aiming at the phenomenon that the current gas sealing element sealing performance detection field has a long detection cycle and difficult long-term monitoring, the present invention proposes a gas sealing performance comprehensive detection system based on multiple accelerated test methods to achieve rapid sealing performance of the gas sealing element The purpose of testing, reducing the test cycle and reducing test costs. As shown in Figures 1-4, the cabin foot 1, the cabin body 2 and the cabin roof 7 of the gas sealing performance simulation integrated detection system provided by the present invention are fixed together by welding. The cabin feet 1, the cabin body 2, and the cabin roof 7. The cabin door 6 constitutes the basic structure of the device. The cabin 2 is the main equipment of the entire system, and most of the other components are attached to the cabin 2. The cabin door 6 can be opened or closed manually, mainly to ensure that the tested gas sealing element 12 can pass freely. The tested gas sealing element 12 is a gas storage device that needs to detect the sealing performance of the detected gas, and it is filled with identification gas and gas originally required to be stored, and it is required that the identification gas cannot undergo any physical and chemical reaction with the stored gas.

The cabin body 2 is provided with a seal support seat 13. The shape of the seal support seat 13 is not fixed, and its main function is to support and fix the gas sealing element 12 under test. Therefore, the specific shape of the seal support seat 13 and The structure is limited by the structure of the tested gas sealing element 12, and no specific requirements are made.

The cabin 2 of the present invention is provided with a gas pressure sensor 11, a temperature sensor 29 and an identification gas detector 10. The gas pressure sensor 11 is fixed on the inner wall of the cabin 2, and the gas pressure sensor 11 has a larger measurement Range, and can accurately transmit the detected pressure data to the computer terminal 26 in real time. The temperature sensor 29 is used to measure the internal temperature of the cabin and transmit its temperature value to the computer terminal 26. The identification gas detector 10 is located on the inner wall of the cabin 2 and has high accuracy. It can accurately detect the content of the identification gas in the gas leaking from the gas sealing element 12 to be tested, and then calculate the leakage gas Content, and then transmit its data to the computer terminal 26.

The outer bottom of the cabin 2 is provided with a suction hole 3, a data hole 4 and a power socket 5, the suction hole 3 penetrates the cabin 2 and is connected to the gas filter 18 through a pipeline. One end of the gas filter 18 is connected to the suction hole 3 through a pipeline, and the other end is connected to the high-pressure gas pump 27. The gas filter 18 can filter the gas extracted from the suction hole 3 to ensure its change. Discharge into the atmosphere into non-toxic and harmless gas. The high-pressure gas pump 27 is connected to the gas filter 18 through the suction hole 3, and the high-pressure gas pump 27 can pump the gas in the cabin 2 and become safe gas after being filtered by the gas filter 18 Released into the atmosphere, in this way, the air pressure in the cabin 2 can be reduced, thereby speeding up the leakage rate of the gas sealing element 12 under test. The power socket 5 is the power connection port between the cabin 2 and the outside, which is connected to the identification gas detector 10, the gas pressure sensor 11, the electric lamp 8 and the compressor 15 through the internal power supply line 19, and passes through the outside The power supply line 25 is connected to the external power supply 28 to provide power support for the electrical components in the entire cabin 2. The data hole 4 is the data intermediary between the cabin 2 and the computer terminal 26. The data measured by the sensors in the cabin 2 first reaches the data hole 4 through the internal data transmission line 20, and then The computer terminal 26 is reached through the external data transmission line 24 for analysis and calculation. The computer terminal 26 is the analysis and processing mechanism of the entire system and also the control center of the entire device. All data will be summarized and analyzed in the computer finally, and the operation of each mechanism in the entire device system needs to be controlled by the computer terminal. carried out. The electric lamp 8 is illuminated by the electric power provided by the internal power supply line 19 to facilitate the movement of the gas sealing element 12 under test.

The cabin of the present invention is provided with a refrigeration system. The refrigeration system includes a refrigerant tank 17, a compressor 15, a condenser 14, and a refrigeration pipe 9, wherein the refrigerant tank 17, the compressor 15, and the condenser 14 are located in the cabin. 2 Between the inner and outer walls. One end of the compressor 15 is connected to the refrigerant tank 17 through a refrigerant pipe 16 to suck in the refrigerant, and the other end is connected to the condenser 14 through a refrigerant output pipe 22 and a refrigerant return pipe 21 of a bidirectional pipe for cooling The refrigerant is compressed into a gaseous refrigerant of high temperature and high pressure after being sucked into the compressor 15 and then delivered to the condenser 14 through the refrigerant output pipe 22. In the condenser 14, the refrigerant will begin to release heat. After condensing and releasing heat, the high-temperature and high-pressure gaseous refrigerant will turn into a low-temperature and low-pressure liquid refrigerant, and finally enter the refrigeration pipe 9 through the refrigerant output pipe 22, and the low-temperature and low-pressure liquid refrigerant will quickly enter the refrigeration pipe 9 It absorbs heat and evaporates, and finally becomes a gaseous refrigerant with isothermal pressure and pressure. Then, the gaseous refrigerant is sucked and compressed by the compressor 15 through the refrigerant return pipe 21 again, and the refrigeration cycle continues. As the refrigerant evaporates and absorbs heat, the temperature in the cabin 2 also decreases, and finally realizes the function of accelerating the refrigeration of the tested gas sealing element 12 and realizing the leakage rate of the tested gas sealing element 12 purpose. The refrigerating pipe 9 is a circular ring-shaped pipe located on the inner wall of the cabin body 2 and arranged evenly from top to bottom. Some of the refrigerating pipes are restricted by the door, and their shape is a fan-shaped ring-mounted pipe with a part of the arc missing. The function of the circuit is to reduce the test temperature inside the cabin 2 through the refrigeration function, thereby speeding up the leakage rate of the tested gas sealing element 12, and achieving the purpose of accelerating the test.

Hereinafter, referring to Fig. 1 to Fig. 4 in conjunction with the above structure description, the method of using the gas sealing performance simulation comprehensive detection system of the present invention will be described:

Before starting the experiment, first put the tested gas sealing element 12 mixed with the identification gas and pre-storage gas into the cabin 2, and record the initial gas pressure and container volume of the tested gas sealing element 12 to the computer terminal 26, and The seal support seat 13 is used to fix it, and then the cabin door 6 is closed. Input the initial environment (temperature, pressure) and detection duration (time required) of the tested gas sealing element 12 in the computer terminal 26, and the system will automatically analyze and calculate according to the input, and finally get the result based on the original initial environment The accelerated test should maintain the temperature, pressure, and the detection duration after acceleration, and without changing the failure mechanism of the tested gas sealing element 12, the test conditions are strengthened to accelerate the leakage of the tested gas sealing element 12 so that the Obtain its various leakage parameters within time.

Then the computer terminal 26 sends instructions from the external data transmission line 24, the data hole 4, and the internal data transmission line 20 to the high-pressure air pump 27 and the compressor 15 to start working. The high-pressure air pump 27 extracts the air in the cabin 2 through the suction pipe 23, the suction hole 3, and the gas filter 18, so that the air pressure in the cabin 2 quickly drops to a specified number and then the suction hole 3 is closed. At the same time, the compressor 15 starts to work, through the condenser 14 and the refrigerating pipe 9 to start refrigeration, until the temperature in the cabin 2 drops to a specified value, and the temperature value remains unchanged. The temperature, gas pressure and identification gas concentration in the cabin 2 are all detected by the gas pressure sensor 11, the temperature sensor 29 and the identification gas detector 10, and the detected values are passed through the internal data transmission line 20, the data hole 4, The external data transmission line 24 is fed back to the computer terminal 26, and the computer terminal 26 will adjust the instructions in time according to the feedback value changes, so that the cabin 2 maintains a stable set temperature value and gas pressure value. When the system test time reaches the preset time of the computer terminal 26, the identification gas detector 10 will transmit the final measured value to the computer terminal 26, the measurement is completed, the air extraction hole 3 is opened, and the high-pressure air pump 27 works to extract the gas inside the cabin 2 After the leaking gas inside the cabin 2 is discharged, the cabin door 6 can be opened, and the gas sealing element 12 to be tested can be taken out after waiting for a while.

The gas sealing performance comprehensive detection system based on multiple accelerated test methods of the present invention can accelerate the leakage of the tested gas sealing element by strengthening the test conditions without changing the failure mechanism of the gas sealing element, so as Obtain its various leakage parameters, and then evaluate its sealing performance.

The above are only the preferred embodiments of the present invention. Of course, the scope of rights of the present invention cannot be limited by this. It should be pointed out that for those of ordinary skill in the art, they can also Several improvements and changes have been made, and these improvements and changes are also regarded as the protection scope of the present invention.

Claims

A gas sealing performance simulation and comprehensive detection system, comprising a cabin body for placing the gas sealing element to be tested, characterized in that:

A gas pressure sensor is provided on the inner wall of the cabin for detecting pressure data in the cabin;

An identification gas detector is provided on the inner wall of the cabin to detect the content of the identification gas in the gas leaked from the gas sealing element under test in the cabin;

A refrigeration system is provided in the cabin to accelerate the reduction of the temperature of the tested gas sealing element;

A computer terminal is provided outside the cabin, which is connected to the gas pressure sensor, the identification gas detector and the refrigeration system, and is used to analyze the feedback pressure data and the leakage gas content and maintain the cabin at a stable set temperature Value and gas pressure value to quickly obtain the leakage parameters of the gas sealing element.
The gas sealing performance simulation comprehensive detection system of claim 1, wherein the refrigeration system includes a refrigerant tank, a compressor, a condenser, and a refrigeration pipe, and the refrigerant tank, compressor, and condenser are located at all Between the inner and outer walls of the cabin;

One end of the compressor is connected to the refrigerant tank through a refrigerant pipe, and the other end is connected to the condenser through a refrigerant output pipe and a refrigerant return pipe.
The gas sealing performance simulation comprehensive detection system according to claim 2, wherein the refrigerating pipe is a circular pipe located on the inner wall of the cabin and is evenly arranged from top to bottom.
The gas sealing performance simulation comprehensive detection system according to claim 1, wherein the bottom of the cabin body is provided with a suction hole, the suction hole penetrates the cabin body and is connected to the gas filter through a pipeline;

One end of the gas filter is connected to the suction hole through a pipeline, and the other end is connected to a high-pressure gas pump.
The gas sealing performance simulation comprehensive detection system according to claim 1, wherein a temperature sensor is provided in the cabin, which is connected to the computer terminal, and is used to measure the internal temperature of the cabin and calculate its temperature value. To the computer terminal.
The gas sealing performance simulation comprehensive detection system according to claim 1, wherein the bottom of the cabin is provided with a power jack that provides power support for the electrical components in the entire cabin.
The gas sealing performance simulation comprehensive detection system of claim 1, wherein the bottom of the cabin is provided with a data hole for data intermediary between the cabin and the computer terminal.
The gas sealing performance simulation comprehensive detection system according to claim 1, wherein the cabin is provided with a sealing member support seat for supporting and fixing the gas sealing element under test.