Breather valve performance on-line testing device

Abstract

The invention discloses a breather valve performance online testing device, and relates to the technical field of online detection. The system comprises a positive pressure test circuit and a negative pressure test circuit, the starting end of the positive pressure test circuit is used for being connected with a gas source for positive pressure test, the tail end of the positive pressure test circuit is used for being connected with test equipment, and the negative pressure test circuit is connected with the positive pressure test circuit through a circuit switcher. The positive pressure testing circuit is used for testing the sealing performance and the leakage flow of the valve in a pressure maintaining mode. According to the online detection device, equipment does not need to be disassembled, data are collected in real time through the pressure sensor and the flowmeter, parameters such as the opening and closing pressure and the leakage rate of the breather valve are analyzed in combination with an intelligent algorithm, the checking time of a single machine is shortened to 30 minutes, the efficiency is improved by 90%, the online detection device is suitable for regular security check of a large storage tank, and the single-time detection cost is reduced by 60%.

Description

Technical Field

[0001] This invention belongs to the field of online testing technology, and in particular relates to an online testing device for the performance of a breathing valve. Background Technology

[0002] Online testing of breather valves primarily refers to performance checks on the equipment under test, with airtightness testing being a crucial component. This test quickly determines whether the equipment is functioning correctly, preventing leaks or pressure imbalances. However, existing online breather valve testing devices typically involve both hoisting and offline operations, resulting in low testing efficiency and high costs. Therefore, we provide an online breather valve performance testing device to address these issues. Summary of the Invention

[0003] The purpose of this invention is to provide an online testing device for the performance of breathing valves. By designing the online testing device for breathing valve performance using positive pressure testing circuits and negative pressure testing circuits, the problem of low testing efficiency and high testing cost of existing online testing devices for breathing valves is solved.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is an online testing device for the performance of a breathing valve, including a positive pressure testing line and a negative pressure testing line. The starting end of the positive pressure testing line is used to connect to a positive pressure testing gas source, and the ending end of the positive pressure testing line is used to connect to testing equipment. The negative pressure testing line and the positive pressure testing line are connected through a line switch. The positive pressure testing line is used to hold pressure to test the sealing performance and leakage flow of the valve.

[0005] The present invention is further configured such that the positive pressure test circuit consists of an air source interface, a pressure reducing valve, a pressure reducing gauge, a positive pressure gauge, a positive pressure valve, a circuit switcher, and a test interface installed in the chassis. The circuit switcher consists of a three-way connector a and a three-way switching valve. The three-way switching valve is used to control the airflow direction in the three-way connector a.

[0006] The present invention is further configured such that the gas source interface is connected to an external test gas source through a gas source pipe, the gas source interface is connected to the pressure reducing valve through a positive pressure air guide hose, the pressure reducing valve is connected to the positive pressure valve through a positive pressure air guide hose, a pressure measuring hose a is connected to the positive pressure air guide hose between the pressure reducing valve and the positive pressure valve, and the pressure measuring hose a is connected to a pressure reducing gauge.

[0007] The present invention is further configured such that a three-way connector b is provided between the positive pressure valve and the positive pressure gauge, the three-way connector b is connected to the positive pressure valve through a positive pressure air guide hose, and the positive pressure gauge is connected to the three-way connector b through a pressure measuring hose b.

[0008] The present invention is further configured such that the three-way connector a is connected to the test interface via a positive pressure air guide hose, and the three-way connector b is connected to the three-way connector a via a positive pressure air guide hose. When the test equipment is subjected to a positive pressure test through the positive pressure test line, the three-way switching valve is used to control the connection between the positive pressure air guide hose between the three-way connector b and the three-way connector a and between the three-way connector a and the test interface.

[0009] The present invention is further configured such that the negative pressure test circuit consists of a vacuum pump, a negative pressure valve, a three-way connector c, a negative pressure gauge, a circuit switch and a test interface, wherein the vacuum pump and the negative pressure valve are connected by a negative pressure air guide hose, the negative pressure valve and the three-way connector c are connected by a negative pressure air guide hose, and the three-way connector c and the negative pressure gauge are connected by a pressure measuring hose c.

[0010] The present invention is further configured such that the three-way connector c and the three-way connector a are connected by a negative pressure air guide hose. When the test equipment is subjected to a negative pressure test through the negative pressure test line, the three-way switching valve is used to control the connection between the negative pressure air guide hose between the three-way connector c and the three-way connector a and the positive pressure air guide hose between the three-way connector a and the test interface.

[0011] The present invention is further configured such that the online testing device for the breathing valve performance also includes a chassis cover hinged to the chassis, and the inside of the chassis cover is respectively equipped with a test host, a power button, a power supply, a vacuum pump start button, a vacuum pump power interface and a sensor interface. The power supply is used to supply power to the test host and the vacuum pump, and the vacuum pump is started and stopped by the vacuum pump start button.

[0012] The present invention has the following beneficial effects: The online detection device of the present invention does not require disassembly of the equipment. It collects data in real time through pressure sensors and flow meters, and analyzes parameters such as the opening and closing pressure of the breathing valve and the leakage rate by combining intelligent algorithms. The calibration time of a single unit is shortened to 30 minutes, and the efficiency is improved by 90%. It is suitable for the regular safety inspection of large storage tanks, and the cost of a single inspection is reduced by 60%. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a diagram showing the internal structure of the casing of the online performance testing device for the breather valve in this invention.

[0015] Figure 2This is a diagram showing the internal structure of the casing cover of the online performance testing device for the breather valve in this invention.

[0016] Figure 3 This is a flowchart of the online testing device for the breather valve performance in this invention.

[0017] The attached diagram lists the components represented by each number as follows: 1-Gas source interface, 2-Pressure reducing valve, 3-Pressure reducing gauge, 4-Positive pressure gauge, 5-Positive pressure valve, 6-Test interface, 7-T-connector a, 8-T-connector switching valve, 9-T-connector b, 10-Vacuum pump, 11-Negative pressure valve, 12-T-connector c, 13-Negative pressure gauge, 14-Test host, 15-Power button, 16-Power supply, 17-Vacuum pump start button, 18-Vacuum pump power interface, 19-Sensor interface, 20-T-connector d. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-3 This invention relates to an online testing device for the performance of a breathing valve, comprising a positive pressure testing circuit and a negative pressure testing circuit. The starting end of the positive pressure testing circuit is used to connect to a positive pressure testing gas source, and the ending end of the positive pressure testing circuit is used to connect to testing equipment. After the gas source and testing equipment are connected, online testing can be performed using this testing device. The negative pressure testing circuit and the positive pressure testing circuit are connected by a circuit switch to flexibly switch the testing circuit according to different testing requirements. The positive pressure testing circuit is used to test the valve's sealing performance and leakage flow rate while maintaining pressure. The online testing device for breathing valves in this application is an instrument for periodically detecting and calibrating the breathing pressure and inhalation pressure of breathing valves. This device is highly accurate and easy to operate.

[0020] In this embodiment of the invention, such as Figure 1 and Figure 2 As shown, the positive pressure test circuit consists of an air source interface 1, a pressure reducing valve 2, a pressure reducing gauge 3, a positive pressure gauge 4, a positive pressure valve 5, a circuit switcher, and a test interface 6, all installed inside the chassis. The circuit switcher consists of a three-way connector a7 and a three-way switching valve 8. The three-way switching valve 8 is used to control the airflow direction within the three-way connector a7, thus enabling flexible switching between the positive and negative pressure test circuits. Figure 3 The air source pressure gauge in this embodiment is the pressure reducing gauge 3.

[0021] Furthermore, the gas source interface 1 is connected to an external test gas source via a gas source pipe, thus supplying the test gas to the testing device, which then guides it into the testing equipment for online detection. The gas source interface 1 is connected to the pressure reducing valve 2 via a positive pressure air guide hose, and the pressure reducing valve 2 is connected to the positive pressure valve 5 via a positive pressure air guide hose. A pressure measuring hose a is connected to the positive pressure air guide hose between the pressure reducing valve 2 and the positive pressure valve 5, and the pressure measuring hose a is connected to the pressure reducing gauge 3 (specifically, as shown in the image). Figure 1 As shown, a three-way connector d20 is provided between the pressure reducing valve 2 and the positive pressure valve 5. The three-way connector d20 is connected to the pressure reducing valve 2 through a positive pressure air guide hose, and the three-way connector d20 is connected to the positive pressure valve 5 through a positive pressure air guide hose. The pressure reducing gauge 3 is connected to the three-way connector d20 through a pressure measuring hose a.

[0022] In this embodiment of the invention, such as Figure 1 As shown, a three-way connector b9 is provided between the positive pressure valve 5 and the positive pressure gauge 4. The three-way connector b9 is connected to the positive pressure valve 5 via a positive pressure air guide hose, and the positive pressure gauge 4 is connected to the three-way connector b9 via a pressure measuring hose b. The three-way connector a7 is connected to the test interface 6 via a positive pressure air guide hose, and the three-way connector b9 is connected to the three-way connector a7 via a positive pressure air guide hose. When the test equipment is subjected to a positive pressure test through the positive pressure test line, the three-way switching valve 8 is used to control the connection of the positive pressure air guide hose between the three-way connector b9 and the three-way connector a7 and the positive pressure air guide hose between the three-way connector a7 and the test interface 6.

[0023] In this embodiment of the invention, such as Figure 1 As shown, the negative pressure test circuit consists of a vacuum pump 10, a negative pressure valve 11, a three-way connector c12, a negative pressure gauge 13, a circuit switch, and a test interface 6. The vacuum pump 10 and the negative pressure valve 11 are connected by a negative pressure air guide hose, the negative pressure valve 11 and the three-way connector c12 are connected by a negative pressure air guide hose, and the three-way connector c12 and the negative pressure gauge 13 are connected by a pressure measuring hose c.

[0024] Furthermore, the three-way connector C12 and the three-way connector A7 are connected by a negative pressure air guide hose. When the test equipment is subjected to a negative pressure test through the negative pressure test line, the three-way switching valve 8 is used to control the connection between the negative pressure air guide hose between the three-way connector C12 and the three-way connector A7 and the positive pressure air guide hose between the three-way connector A7 and the test interface 6.

[0025] In this embodiment of the invention, such as Figure 2As shown, the online performance testing device for the breathing valve also includes a chassis cover hinged to the main unit. Inside the chassis cover are a test host 14, a power button 15, a power supply 16, a vacuum pump start button 17, a vacuum pump power interface 18, and a sensor interface 19. The power supply 16 supplies power to the test host 14 and the vacuum pump 10. The vacuum pump 10 is started and stopped via the vacuum pump start button 17. PC testing software is installed on the test host 14. This PC testing software is connected to the breathing valve via a test data cable and a sensor cable. The breathing valve is connected to the test interface 6 via a test pipeline. A sensor probe is located at the test interface 6. During testing, the air source is first connected through the air source interface 1, and then... After the equipment pipeline is connected, adjust the pressure regulating valve (i.e., pressure reducing valve 2) to 100 kPa. Then, switch the three-way switching valve 8 to the positive pressure state and slowly open the positive pressure valve 5. When the pressure of the breather valve (i.e., the pressure value on the positive pressure gauge 4) slowly rises to the set start-up pressure, record and save the relevant curves, and test the valve sealing performance and leakage flow under pressure. After the test, close the positive pressure valve 5. Then, switch the three-way switching valve 8 to the negative pressure state, turn on the vacuum pump 10, and slowly open the negative pressure valve 11. When the negative pressure of the breather valve (i.e., the negative pressure value on the negative pressure gauge 13) reaches a certain pressure, the valve will start. Record and save the relevant curves. After the test, close the negative pressure valve 11 and turn off the vacuum pump 10. After the overall test is completed, turn off the power supply 16 and the air supply.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An online testing device for the performance of a breather valve, characterized in that... It includes a positive pressure test line and a negative pressure test line. The starting end of the positive pressure test line is used to connect to the gas source used for positive pressure testing, and the end of the positive pressure test line is used to connect to the test equipment. The negative pressure test line is connected to the positive pressure test line through a line switch. The positive pressure test line is used to test the sealing performance and leakage flow of the valve while maintaining pressure.

2. The online testing device for the performance of a breathing valve according to claim 1, characterized in that... The positive pressure test circuit consists of an air source interface (1), a pressure reducing valve (2), a pressure reducing gauge (3), a positive pressure gauge (4), a positive pressure valve (5), a circuit switcher, and a test interface (6) installed in the chassis. The circuit switcher consists of a three-way connector a (7) and a three-way switching valve (8). The three-way switching valve (8) is used to control the airflow direction in the three-way connector a (7).

3. The online testing device for the performance of a breathing valve according to claim 2, characterized in that... The gas source interface (1) is connected to an external test gas source through a gas source pipe. The gas source interface (1) is connected to the pressure reducing valve (2) through a positive pressure air guide hose. The pressure reducing valve (2) is connected to the positive pressure valve (5) through a positive pressure air guide hose. A pressure measuring hose a is connected to the positive pressure air guide hose between the pressure reducing valve (2) and the positive pressure valve (5). The pressure measuring hose a is connected to the pressure reducing gauge (3).

4. The online testing device for the performance of a breathing valve according to claim 2, characterized in that... A three-way connector b (9) is provided between the positive pressure valve (5) and the positive pressure gauge (4). The three-way connector b (9) is connected to the positive pressure valve (5) through a positive pressure air guide hose. The positive pressure gauge (4) is connected to the three-way connector b (9) through a pressure measuring hose b.

5. The online testing device for the performance of a breathing valve according to claim 4, characterized in that... The three-way connector a (7) is connected to the test interface (6) via a positive pressure air guide hose, and the three-way connector b (9) is connected to the three-way connector a (7) via a positive pressure air guide hose. When the test equipment is subjected to a positive pressure test through the positive pressure test line, the three-way switching valve (8) is used to control the connection between the positive pressure air guide hose between the three-way connector b (9) and the three-way connector a (7) and the positive pressure air guide hose between the three-way connector a (7) and the test interface (6).

6. The online testing device for the performance of a breathing valve according to claim 2, characterized in that... The negative pressure test circuit consists of a vacuum pump (10), a negative pressure valve (11), a three-way connector c (12), a negative pressure gauge (13), a circuit switcher, and a test interface (6). The vacuum pump (10) and the negative pressure valve (11) are connected by a negative pressure air guide hose. The negative pressure valve (11) and the three-way connector c (12) are connected by a negative pressure air guide hose. The three-way connector c (12) and the negative pressure gauge (13) are connected by a pressure measuring hose c.

7. The online testing device for the performance of a breathing valve according to claim 6, characterized in that... The three-way connector c (12) and the three-way connector a (7) are connected by a negative pressure air guide hose. When the test equipment is subjected to a negative pressure test through the negative pressure test line, the three-way switching valve (8) is used to control the connection between the negative pressure air guide hose between the three-way connector c (12) and the three-way connector a (7) and the positive pressure air guide hose between the three-way connector a (7) and the test interface (6).

8. The online performance testing device for a breather valve according to claim 6, characterized in that... The online testing device for the performance of the breathing valve also includes a chassis cover hinged to the chassis. The test host (14), power button (15), power supply (16), vacuum pump start button (17), vacuum pump power interface (18) and sensor interface (19) are respectively installed on the inside of the chassis cover. The power supply (16) is used to supply power to the test host (14) and vacuum pump (10). The vacuum pump (10) is started and stopped by the vacuum pump start button (17).

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