Simple detection device and method for breather valve

Abstract

The invention discloses a simple detection device and method for a breather valve, and the device comprises a hollow blind plate, a first detection gas circuit, and a second detection gas circuit, the hollow blind plate is disposed between the breather valve and a communication pipeline, the hollow blind plate is communicated with the inner cavity of the breather valve, the first detection gas circuit is communicated with the hollow blind plate, and is used for introducing gas into the breather valve, and the second detection gas circuit is communicated with the hollow blind plate. Simulating an expiration state of a breather valve; the second detection gas circuit is communicated with the hollow blind plate so as to form negative pressure for the breather valve and simulate the inspiration state of the breather valve; the first detection gas path and the second detection gas path are both communicated with the hollow blind plate through the monitoring gas path and are both communicated with the gas source. The whole device is simple in structural design, convenient to operate and high in popularization value, whether the breather valve is in a normal state or not is determined through regular self-testing, meanwhile, online self-testing can be achieved, and daily safe operation of the oil tank is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of breathing valves, and in particular to a simple detection device and method for breathing valves. Background Art

[0002] The breathing valve is a safe and energy-saving product that maintains the air pressure balance of the storage tank and reduces the volatilization of the medium. The breathing valve makes full use of the pressure-bearing capacity of the storage tank itself to reduce the discharge of the medium. It mainly controls the positive exhaust pressure and negative suction pressure of the storage tank through the weight of the positive and negative pressure valve disc. When the pressure of the medium in the tank is within the control operating pressure range of the breathing valve, the breathing valve does not work to maintain the sealing of the oil tank; when the medium is added to the tank, the pressure of the upper gas space in the tank increases, and when the positive operating pressure of the breathing valve is reached, the pressure valve is pushed open, and the gas escapes from the exhalation port of the breathing valve, so that the pressure in the tank no longer continues Increase; when the medium is pumped out of the tank, the pressure of the upper gas space in the tank drops to reach the operating negative pressure of the breathing valve, the atmosphere outside the tank activates the negative pressure valve disc of the breathing valve, allowing external gas to enter the tank, so that the pressure in the tank no longer continues to drop, and the air pressure inside and outside the tank is balanced to protect the storage tank; it can be seen that the normal operation of the breathing valve is an important part of ensuring the safety of oil storage in the tank, so the breathing valve is regularly inspected to see if it is normal, but currently the breathing valve inspection requires shutting down multiple devices and removing the breathing valve for separate inspection, which has low inspection efficiency and affects the daily safe operation of the oil tank. Summary of the invention

[0003] The purpose of the present invention is to provide a simple detection device and method for a breathing valve in order to solve the above-mentioned problem.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A simple detection device for a breathing valve, comprising:

[0006] A hollow blind plate, which is placed between the breathing valve and the connecting pipe, and is connected to the inner cavity of the breathing valve;

[0007] A first detection gas path, the first detection gas path is connected to the hollow blind plate, and is used to pass gas into the breathing valve to simulate the exhalation state of the breathing valve;

[0008] A second detection gas path, the second detection gas path is connected to the hollow blind plate, so as to form a negative pressure on the breathing valve to simulate the inhalation state of the breathing valve;

[0009] The first detection gas path and the second detection gas path are both connected to the hollow blind plate through a monitoring gas path, and the first detection gas path and the second detection gas path are both connected to a gas source.

[0010] Preferably, an air hole communicating with the breathing valve is provided on the hollow blind plate, and an air passage communicating with the air hole and the monitoring air path is opened radially along the hollow blind plate.

[0011] Preferably, the monitoring gas circuit includes a pressure gauge and a first breathing connecting valve, and the first breathing connecting valve is respectively connected to the air blind plate, the pressure gauge, the first detection gas circuit and the second detection gas circuit.

[0012] Preferably, a gas flow meter is provided between the first breathing connection valve and the air blind plate.

[0013] Preferably, the first detection gas circuit includes a first gas valve and a pressure regulating valve, the breathing connecting valve is connected to the pressure regulating valve, the pressure regulating valve is connected to the first gas valve, the first gas valve is connected to the second breathing connecting valve, and the second breathing connecting valve is respectively connected to the gas source and the second detection gas circuit.

[0014] Preferably, the second detection air circuit includes a second air valve, a vacuum generator, a vacuum air conditioning valve and a third air valve, the second air valve is connected to the second breathing connecting valve, the second air valve is connected to the vacuum generator, the vacuum generator is connected to the vacuum regulating valve, the vacuum regulating valve is connected to the third air valve, and the third air valve is connected to the first breathing connecting valve.

[0015] A breathing valve detection method comprises the following steps:

[0016] S1. First, place the air blind plate in the detection device between the bottom of the breathing valve and the connecting pipe, and tighten the breathing valve and the connecting pipe;

[0017] S2. Insert the air pipe into the interface reserved on the air blind plate, and connect the first detection air circuit and the second detection air circuit to the air source;

[0018] S3, open the first air valve in the first detection air path, and let the gas pass into the breathing valve through the air blind plate. At this time, the inside of the breathing valve is in a positive pressure state, i.e., exhalation state. Rotate the pressure regulating valve knob, observe and record the pressure displayed on the pressure gauge and the gas flow data;

[0019] S4. After the exhalation test is completed, the first air valve is closed, the second air valve is opened, the gas is passed into the vacuum generator to generate a vacuum, and the third air valve is opened. At this time, the inside of the breathing valve is in a negative pressure state, that is, the inhalation state. The vacuum regulating valve knob is rotated, and the pressure displayed on the pressure gauge and the gas flow data are observed and recorded;

[0020] S5. When the positive pressure data is between 2-3KPa, the breathing valve is normal; when the negative pressure data is between -1.5-2KPa, the breathing valve is normal.

[0021] The beneficial effects of the present invention are:

[0022] 1. The overall structure of the present invention is simple in design, easy to operate, and has high promotion value;

[0023] 2. The overall production cost of the present invention is low, which can save testing costs, improve the ability to reduce costs and increase efficiency, and has certain economic value;

[0024] 3. The present invention confirms whether the breathing valve is in a normal state through regular self-testing, so as to control the breathing loss, reduce atmospheric pollution, and have certain environmental protection value;

[0025] 4. The present invention can realize online detection without affecting the daily safe operation of the oil tank and can meet the basic detection requirements of the breathing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a schematic diagram of the overall arrangement of the present invention.

[0028] The following are the descriptions of the reference numerals:

[0029] 1 is the gas source, 2 is the first gas valve, 3 is the pressure regulating valve, 4 is the pressure gauge, 5 is the hollow blind plate, 6 is the third gas valve, 7 is the vacuum regulating valve, 8 is the vacuum generator, and 9 is the second gas valve. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 , the technical solution of the present invention is further explained:

[0031] Embodiment 1

[0032] like Figure 1 As shown, a simple detection device for a breathing valve includes a hollow blind plate 5, a first detection gas path, a second detection gas path, and an air source 1; that is, the present invention as a whole can be divided into three parts, one is the hollow blind plate part, the second is the gas path part, the gas path part includes the first detection gas path and the second detection gas path, and the third is the gas source, which is used to inflate the gas path, and the first detection gas path and the second detection gas path are used to respectively simulate the normal exhaust and inhalation states of the breathing valve, and by monitoring the air pressure data for comparison and analysis, it can be determined whether the breathing valve is normal.

[0033] Specifically, Figure 1As shown, the hollow blind plate 5 is placed between the breathing valve and the connecting pipe, and the hollow blind plate is connected to the inner cavity of the breathing valve. That is to say, when installing the hollow blind plate, the hollow blind plate is placed between the bottom of the breathing valve and the connecting pipe, and then the breathing valve and the connecting pipe are connected and fixed by long bolts; in this embodiment, the hollow blind plate has air holes, and one side with the air holes faces the bottom of the breathing valve, so that the hollow blind plate is connected to the breathing valve.

[0034] It should be noted that, in this embodiment, the diameter of the hollow blind plate 5 is the same as the diameter of the gasket between the bottom of the breathing valve and the connecting pipe.

[0035] In some embodiments, the hollow blind plate 5 is provided with an air hole connected to the breathing valve, and an air passage connected to the air hole and the monitoring air path is opened along the radial direction of the hollow blind plate 5. That is to say, an air hole is opened at the center of the hollow blind plate, and the air hole does not penetrate the hollow blind plate, and then an air passage is opened along the hollow radial direction, the air hole is connected to the air passage, and the air passage is used to connect to the monitoring air path, and to pass gas or inhale gas.

[0036] Specifically, Figure 1 As shown, the monitoring gas circuit includes a pressure gauge 4 and a first breathing connection valve, and the first breathing connection valve is respectively connected to the air blind plate 5, the pressure gauge 4, the first detection gas circuit and the second detection gas circuit. That is to say, in this embodiment, the first breathing connection valve has four interfaces, and the four interfaces are respectively connected to the air blind plate, the pressure gauge, the first detection gas circuit and the second detection gas circuit through the trachea, wherein the first detection gas circuit and the second detection gas circuit inflate and inhale the hollow blind plate respectively, and the pressure gauge detects the gas pressure passing through the trachea, and whether the hollow blind plate is normal can be determined by observing the pressure data.

[0037] It should be noted that the pressure gauge 4 in this embodiment is a pressure vacuum gauge.

[0038] In some embodiments, a gas flow meter is provided between the first breathing connection valve and the air blind plate 5. That is to say, a gas flow meter is also provided on the air path between the air blind plate and the pressure gauge, and the gas flow meter can be used to monitor the gas flow through the air pipe, so as to accurately judge whether the breathing valve is normal in combination with the pressure data displayed on the pressure gauge.

[0039] Specifically, Figure 1 As shown, the first detection gas path is connected to the hollow blind plate 5 to pass gas into the breathing valve to simulate the exhalation state of the breathing valve. That is, the first detection gas path is used to inflate the hollow blind plate, and the hollow blind plate passes gas into the breathing valve. At this time, a positive exhaust pressure state is formed inside the breathing valve, and the pressure gauge displays the pressure of the gas passing through.

[0040] Specifically, Figure 1As shown, the second detection gas path is connected to the hollow blind plate 5 to form a negative pressure on the breathing valve to simulate the inhalation state of the breathing valve. That is, the second detection gas path is used to absorb the gas inside the breathing valve, and a negative pressure state is formed inside the breathing valve, and the pressure gauge displays the pressure of the gas passing through.

[0041] The first detection gas path and the second detection gas path are both connected to the hollow blind plate 5 through the monitoring gas path, and the first detection gas path and the second detection gas path are both connected to the gas source. In other words, the first detection gas path and the second detection gas path are both connected to the gas source, and the gas source is used to introduce gas into the first detection gas path or the second detection gas path, so that the first detection gas path forms exhaust and the second detection gas path forms intake.

[0042] In some embodiments, the first detection gas circuit includes a first gas valve 2 and a pressure regulating valve 3, the first breathing connection valve is connected to the pressure regulating valve 3, the pressure regulating valve 3 is connected to the first gas valve 2, the first gas valve 2 is connected to the second breathing connection valve, and the second breathing connection valve is connected to the gas source 1 and the second detection gas circuit respectively. That is to say, when detecting the positive pressure of the breathing valve operation, turn on the gas source and open the first gas valve. At this time, the second gas valve in the second detection gas circuit is in a closed state, and the gas passes through the pressure regulating valve and the air holes in the breathing connection valve and the air blind plate and enters the interior of the breathing valve. By adjusting the pressure regulating valve, when the sound of the breathing valve opening is heard, observe and record the pressure data of the pressure gauge. When the positive pressure data is 2-3KPa, it indicates that the breathing valve is normal.

[0043] In some embodiments, the second detection gas circuit includes a second gas valve 9, a vacuum generator 8, a vacuum regulating valve 7 and a third gas valve 6. The second gas valve 9 is connected to the second breathing connection valve, the second gas valve 9 is connected to the vacuum generator 8, the vacuum generator 8 is connected to the vacuum regulating valve 7, the vacuum regulating valve 7 is connected to the third gas valve 6, and the third gas valve 6 is connected to the first breathing connection valve. That is to say, when detecting the negative pressure of the breathing valve operation, the first gas valve is closed and the second gas valve is opened. At this time, the gas source gas is introduced into the vacuum generator to generate a vacuum. Then the third gas valve is opened, and the vacuum generator absorbs the gas in the breathing valve, so that a negative pressure state is formed inside the breathing valve. The negative pressure inside the breathing valve is adjusted by rotating the vacuum regulating valve. When the sound of the breathing valve opening is heard, the pressure gauge data is observed and recorded. When the negative pressure data is between -1.5-2KPa, it indicates that the breathing valve is normal.

[0044] Embodiment 2

[0045] A breathing valve detection method comprises the following steps:

[0046] S1. First, place the air blind plate in the detection device between the bottom of the breathing valve and the connecting pipe, and fasten the breathing valve and the connecting pipe. That is, the hollow blind plate is placed between the bottom of the breathing valve and the connecting pipe, and then the breathing valve and the connecting pipe are connected and fixed with long bolts. The hollow blind plate has air holes, and one side with air holes faces the bottom of the breathing valve, so that the hollow blind plate and the breathing valve are connected.

[0047] S2. Insert the air pipe into the interface reserved on the air blind plate, and connect the first detection air circuit and the second detection air circuit to the air source. That is, the air blind plate has an interface reserved, and after the air blind plate is installed and fixed, the air pipe of the monitoring air circuit is connected to the interface on the air blind plate, and the first detection air circuit and the second detection air circuit are connected to the air source.

[0048] S3. Open the first air valve in the first detection air circuit, and the gas enters the breathing valve through the air blind plate. At this time, the inside of the breathing valve is in positive pressure, that is, the exhalation state. Rotate the pressure regulating valve knob to observe and record the pressure displayed on the pressure gauge and the gas flow data; that is to say, when detecting the positive pressure of the breathing valve operation, turn on the gas source and open the first air valve. At this time, the second air valve in the second detection air circuit is in a closed state. The gas enters the breathing valve through the pressure regulating valve, the breathing connecting valve and the air holes in the air blind plate. By adjusting the pressure regulating valve, when you hear the sound of the breathing valve opening, observe and record the pressure data on the pressure gauge. When the positive pressure data is between 2-3KPa, it means that the breathing valve is normal.

[0049] S4. Complete the exhalation test, close the first air valve, open the second air valve, and pass the gas into the vacuum generator to generate a vacuum. Open the third air valve. At this time, the inside of the breathing valve is in a negative pressure, that is, an inhalation state. Rotate the vacuum regulating valve knob to observe and record the pressure displayed on the pressure gauge and the gas flow data; that is, when detecting the negative pressure of the breathing valve operation, close the first air valve and open the second air valve. At this time, the gas source gas is passed into the vacuum generator to generate a vacuum. Then open the third air valve. The vacuum generator absorbs the gas in the breathing valve, so that a negative pressure state is formed inside the breathing valve. The negative pressure inside the breathing valve is adjusted by rotating the vacuum regulating valve. When the sound of the breathing valve opening is heard, observe and record the pressure gauge data. When the negative pressure data is between -1.5-2KPa, it indicates that the breathing valve is normal.

[0050] S5. When the positive pressure data is between 2-3KPa, the breathing valve is normal; when the negative pressure data is between -1.5-2KPa, the breathing valve is normal.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A simple detection device for a breathing valve, characterized in that: include: A hollow blind plate, which is placed between the breathing valve and the connecting pipe, and is connected to the inner cavity of the breathing valve; A first detection gas path, the first detection gas path is connected to the hollow blind plate, and is used to pass gas into the breathing valve to simulate the exhalation state of the breathing valve; A second detection gas path, the second detection gas path is connected to the hollow blind plate, so as to form a negative pressure on the breathing valve to simulate the inhalation state of the breathing valve; The first detection gas path and the second detection gas path are both connected to the hollow blind plate through a monitoring gas path, and the first detection gas path and the second detection gas path are both connected to a gas source.

2. The simple detection device for breathing valve according to claim 1, characterized in that: The hollow blind plate is provided with an air hole connected with the breathing valve, and an air passage connected with the air hole and the monitoring air path is opened along the radial direction of the hollow blind plate.

3. The simple detection device for breathing valve according to claim 1 or 2, characterized in that: The monitoring gas circuit includes a pressure gauge and a first breathing connection valve, and the first breathing connection valve is respectively connected to the air blind plate, the pressure gauge, the first detection gas circuit and the second detection gas circuit.

4. The simple monitoring device for breathing valve according to claim 3, characterized in that: A gas flow meter is arranged between the first breathing connection valve and the air blind plate.

5. The simple detection device for breathing valve according to claim 3, characterized in that: The first detection gas circuit includes a first gas valve and a pressure regulating valve, the first breathing connecting valve is connected to the pressure regulating valve, the pressure regulating valve is connected to the first gas valve, the first gas valve is connected to the second breathing connecting valve, and the second breathing connecting valve is respectively connected to the gas source and the second detection gas circuit.

6. The simple detection device for breathing valve according to claim 5, characterized in that: The second detection air circuit includes a second air valve, a vacuum generator, a vacuum conditioning valve and a third air valve. The second air valve is connected to the second breathing connecting valve, the second air valve is connected to the vacuum generator, the vacuum generator is connected to the vacuum regulating valve, the vacuum regulating valve is connected to the third air valve, and the third air valve is connected to the first breathing connecting valve.

7. A breathing valve detection method, characterized in that: The following steps are involved: S1. First, place the air blind plate in the detection device as described in any one of claims 1 to 6 between the bottom of the breathing valve and the connecting pipe, and tighten the breathing valve and the connecting pipe; S2. Insert the air pipe into the interface reserved on the air blind plate, and connect the first detection air circuit and the second detection air circuit to the air source; S3, open the first air valve in the first detection air path, and let the gas pass into the breathing valve through the air blind plate. At this time, the inside of the breathing valve is in a positive pressure state, i.e., exhalation state. Rotate the pressure regulating valve knob, observe and record the pressure displayed on the pressure gauge and the gas flow data; S4. After the exhalation test is completed, the first air valve is closed, the second air valve is opened, the gas is passed into the vacuum generator to generate a vacuum, and the third air valve is opened. At this time, the inside of the breathing valve is in a negative pressure state, that is, the inhalation state. The vacuum regulating valve knob is rotated, and the pressure displayed on the pressure gauge and the gas flow data are observed and recorded; S5. When the positive pressure data is between 2-3KPa, the breathing valve is normal; when the negative pressure data is between -1.5-2KPa, The breathing valve is normal.

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