On-line verification device for breather valve of storage tank

Abstract

The invention discloses a storage tank breather valve online verification device, and relates to the technical field of storage tank breather valve verification. The online verification device for the breather valve of the storage tank comprises an explosion-proof box, a processing computer display is fixedly connected in the explosion-proof box, a processing computer operation area is fixedly connected to the position, located at the bottom of the processing computer display, in the explosion-proof box, and an information processing module is fixedly connected to the position, located at the bottom of the processing computer operation area, in the explosion-proof box. According to the online verification device for the breather valve of the storage tank, when negative pressure verification is carried out on the breather valve, the negative pressure motor exhausts gas cooled by the negative pressure connecting pipe into the storage tank, so that the air pressure in the storage tank is sharply reduced, and when positive pressure verification is carried out, the positive pressure motor exhausts gas heated by the positive pressure connecting pipe into the storage tank, so that the air pressure in the storage tank is greatly reduced. Therefore, the air pressure in the storage tank rises sharply, and the change speed of gas and liquid in the storage tank is accelerated, so that the verification speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of storage tank breathing valve calibration, in particular to an online calibration device for a storage tank breathing valve. Background Art

[0002] The breathing valve is a key safety device, mainly installed on storage tanks or containers, which can automatically sense changes in internal pressure. When the internal pressure is too high, the breathing valve will open to exhaust gas to prevent the container from being damaged by overpressure; when the pressure is too low, it can inhale external gas to maintain the pressure balance in the container.

[0003] The patent with application number 202420018597.1 discloses an online calibration device for the breathing performance of a breathing valve, including an air source mechanism, a pressure regulating mechanism and a measuring mechanism, wherein: the air source mechanism includes a high-pressure gas tank, and the air outlet of the high-pressure gas tank is connected in sequence to a first valve, a pressure reducing valve and a second valve; the pressure regulating mechanism includes a pressure regulating box, and the pressure regulating box is provided with a pressure regulating valve, a third valve, a vacuum generator, a low-pressure gas tank and a first air circuit adapter connected in sequence through an air pipeline; the measuring mechanism includes a measuring box, and the measuring box is provided with a PLC controller and a second air circuit adapter, a flow meter and a second pressure transmitter connected in sequence through an air circuit pipeline.

[0004] When the existing equipment is used to calibrate the breathing valve of a large storage tank or to perform a pressurized calibration inside the storage tank, it often takes a long time to pressurize the gas inside the storage tank to achieve a significant change in the gas pressure inside the storage tank. This will seriously slow down the calibration process when inspecting a large number of storage tanks. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an online calibration device for a storage tank breathing valve to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an online calibration device for a storage tank breathing valve, comprising an explosion-proof box, a processing computer display is fixedly connected inside the explosion-proof box, a processing computer operation area is fixedly connected inside the explosion-proof box at the bottom of the processing computer display, an information processing module is fixedly connected inside the explosion-proof box at the bottom of the processing computer operation area, a partition plate is fixedly connected inside the explosion-proof box at the right side of the information processing module, a pressure control mechanism is fixedly connected to the right side of the partition plate, and a gas source holding component is fixedly connected to the front of the pressure control mechanism; Pressure control mechanisms include: A positive pressure motor, wherein the positive pressure motor is fixedly connected inside the explosion-proof box; A negative pressure motor, which is fixedly connected inside the explosion-proof box and is located on the left side of the positive pressure motor; A negative pressure calibration tube, which is fixedly connected to the back of the negative pressure motor; A positive pressure calibration tube is fixedly connected to the back of the positive pressure motor.

[0007] Preferably, a sensor integrated block is fixedly connected to the outer wall of the negative pressure calibration tube, and a sensor integrated block is fixedly connected to the outer wall of the positive pressure calibration tube. A pressure sensor is integrated inside the sensor integrated block. Quick-release connectors are provided at the outer ends of the positive pressure calibration tube and the negative pressure calibration tube to facilitate connection with the breathing valve calibration seat.

[0008] Preferably, a temperature control box is provided on the front side of the explosion-proof box, a semiconductor refrigeration plate is fixedly connected inside the temperature control box, a first heat conduction plate is fixedly connected to the right side of the semiconductor refrigeration plate, a positive pressure connecting pipe is fixedly connected to the right side of the first heat conduction plate, a second heat conduction plate is fixedly connected to the left side of the semiconductor refrigeration plate, and a negative pressure connecting pipe is fixedly connected to the left side of the second heat conduction plate.

[0009] Preferably, the negative pressure connecting pipe is fixedly connected to the negative pressure motor, and the positive pressure connecting pipe is fixedly connected to the positive pressure motor.

[0010] Preferably, the air source maintaining assembly includes an insulation box, a positive pressure air pipe is fixedly connected to the left side of the insulation box, a negative pressure air pipe is fixedly connected to the left side of the insulation box in front of the positive pressure air pipe, and the positive pressure air pipe is fixedly connected to the positive pressure connecting pipe, and the negative pressure air pipe is fixedly connected to the negative pressure connecting pipe.

[0011] Preferably, the insulation box is movably connected with an insulation plate between the positive pressure air pipe and the negative pressure air pipe, two guide plates are fixedly connected inside the insulation box, and the insulation plate is movably connected to the two guide plates, and the outer walls of the two guide plates are fixedly connected with two limiting blocks.

[0012] Preferably, the limiting block will limit the position of the insulation board so that the insulation board is always located between the positive pressure connecting air pipes.

[0013] Preferably, an electromagnetic ventilation valve is fixedly connected inside the insulation board, springs are fixedly connected to the front and rear sides of the insulation board, and the springs are fixedly connected to the inner wall of the insulation box, a vent is provided on the back of the insulation box, and a sealing cover is movably connected to the outer wall of the vent through a thread.

[0014] The present invention provides an online calibration device for a storage tank breathing valve. It has the following beneficial effects: 1. The online calibration device for the storage tank breathing valve, when performing negative pressure calibration on the breathing valve, the negative pressure motor discharges the gas cooled by the negative pressure connecting pipe into the storage tank, causing the air pressure inside the storage tank to drop sharply; and when performing positive pressure calibration, the positive pressure motor discharges the gas heated by the positive pressure connecting pipe into the storage tank, causing the air pressure inside the storage tank to rise sharply, thereby accelerating the change speed of the gas and liquid inside the storage tank, thereby increasing the calibration speed.

[0015] 2. When the online calibration device of the storage tank breathing valve performs positive pressure calibration on the breathing valve, the positive pressure motor will heat the hot air inside the insulation box again through the negative pressure connecting pipe, so that the temperature of the gas changes higher, thereby making the gas temperature inside the storage tank higher, which will further increase the speed of the internal air pressure rise of the storage tank during the positive pressure calibration, thereby increasing the calibration speed.

[0016] 3. The online calibration device for the tank breathing valve, when the next breathing valve is subjected to negative pressure calibration, the negative pressure motor will discharge the cooled cold air into the tank. The cold air will be cooled again through the positive pressure connecting pipe, making the temperature of the gas discharged into the tank lower, further reducing the temperature inside the tank, and further increasing the speed of reducing the air pressure inside the tank during the negative pressure calibration, thereby increasing the calibration speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A; Figure 4 This is a schematic diagram of the information processing module structure of the present invention; Figure 5 for Figure 4 The enlarged structural diagram of the middle B part; Figure 6 for Figure 4 The enlarged structural diagram of the middle C part; Figure 7 It is a schematic diagram of the structure of the thermal insulation board of the present invention; Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part D in the middle.

[0018] In the figure: 1. explosion-proof box; 2. processing computer display; 3. processing computer operation area; 4. information processing module; 5. pressure control mechanism; 501. positive pressure motor; 502. negative pressure motor; 503. negative pressure calibration tube; 504. positive pressure calibration tube; 505. sensor integrated block; 506. temperature control box; 507. positive pressure connecting pipe; 508. negative pressure connecting pipe; 509. first heat conduction plate; 510. second heat conduction plate; 511. semiconductor refrigeration plate; 6. gas source holding assembly; 601. insulation box; 602. positive pressure air pipe; 603. negative pressure air pipe; 604. insulation board; 605. electromagnetic vent valve; 606. spring; 607. guide plate; 608. limit block; 609. vent. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] Example 1: Please refer to Figure 1-6 The present invention provides a technical solution: an online calibration device for a storage tank breathing valve, comprising an explosion-proof box 1, a processing computer display 2 is fixedly connected inside the explosion-proof box 1, a processing computer operation area 3 is fixedly connected at the bottom of the processing computer display 2 inside the explosion-proof box 1, an information processing module 4 is fixedly connected at the bottom of the processing computer operation area 3 inside the explosion-proof box 1, a partition plate is fixedly connected at the right side of the information processing module 4 inside the explosion-proof box 1, a pressure control mechanism 5 is fixedly connected to the right side of the partition plate, and a gas source holding component 6 is fixedly connected to the front of the pressure control mechanism 5; The pressure control mechanism 5 comprises: A positive pressure motor 501, which is fixedly connected to the inside of the explosion-proof box 1. The positive pressure motor 501 has a self-locking function when not working, and can block the passage; Negative pressure motor 502, which is fixedly connected inside the explosion-proof box 1 and located on the left side of the positive pressure motor 501. The negative pressure motor 502 has a self-locking function when not working, and can block the passage; A negative pressure calibration tube 503, which is fixedly connected to the back of the negative pressure motor 502; Positive pressure calibration tube 504 , the positive pressure calibration tube 504 is fixedly connected to the back side of the positive pressure motor 501 .

[0022] A sensor integrated block 505 is fixedly connected to the outer wall of the negative pressure calibration tube 503, and a sensor integrated block 505 is fixedly connected to the outer wall of the positive pressure calibration tube 504. A pressure sensor is integrated inside the sensor integrated block 505. The two pressure sensors will display the calibrated pressure on the processing computer monitor 2. Quick-release connectors are provided at the outer ends of the positive pressure calibration tube 504 and the negative pressure calibration tube 503 to facilitate connection with the breathing valve calibration seat. When the negative pressure calibration tube 503 and the positive pressure calibration tube 504 are connected with the breathing valve calibration seat, the pressure felt by the pressure sensor is the internal air pressure of the storage tank.

[0023] The quick-release connectors on the negative pressure calibration tube 503 and the positive pressure calibration tube 504 are connected to the breathing valve calibration seat, and the negative pressure calibration is performed by operating the computer operation area 3 to allow the positive pressure motor 501 to quickly inhale gas from the storage tank through the positive pressure calibration tube 504, and allow the negative pressure motor 502 to discharge gas into the storage tank more slowly through the negative pressure calibration tube 503.

[0024] A temperature control box 506 is arranged on the front side of the explosion-proof box 1, and a semiconductor refrigeration plate 511 is fixedly connected inside the temperature control box 506. When the semiconductor refrigeration plate 511 is started, the left side is the cooling surface and the right side is the heating surface. A first heat conducting plate 509 is fixedly connected on the right side of the semiconductor refrigeration plate 511, and a positive pressure connecting pipe 507 is fixedly connected on the right side of the first heat conducting plate 509. The second heat conducting plate 510 will be cooled by the semiconductor refrigeration plate 511, and the semiconductor refrigeration plate 511 will cool the gas flowing through the negative pressure connecting pipe 508 through the negative pressure connecting pipe 508. A second heat conducting plate 510 is fixedly connected on the left side of the semiconductor refrigeration plate 511, and a negative pressure connecting pipe 508 is fixedly connected on the left side of the second heat conducting plate 510. The first heat conducting plate 509 will be heated by the semiconductor refrigeration plate 511, and the first heat conducting plate 509 will heat the gas flowing through the positive pressure connecting pipe 507 through the positive pressure connecting pipe 507.

[0025] The negative pressure connecting pipe 508 is fixedly connected to the negative pressure motor 502 , and the positive pressure connecting pipe 507 is fixedly connected to the positive pressure motor 501 .

[0026] When the calibration is performed, the semiconductor refrigeration plate 511 is started synchronously, and the positive pressure motor 501 allows the gas in the storage tank to be sucked into the positive pressure connecting pipe 507 through the positive pressure calibration tube 504, and then the negative pressure motor 502 allows the gas passing through the negative pressure connecting pipe 508 to be discharged from the negative pressure calibration tube 503 to the inside of the storage tank. The positive pressure motor 501 will inhale the gas faster, and the negative pressure motor 502 will discharge the gas more slowly, which will reduce the gas inside the storage tank, thereby reducing the air pressure inside the storage tank. At the same time, the gas discharged into the storage tank by the negative pressure motor 502 will be cooled by the second heat conduction plate 510 when passing through the negative pressure connecting pipe 508, and will be discharged into the storage tank through the negative pressure calibration tube 503 as a relatively cold gas, which will reduce the temperature of the gas inside the storage tank, thereby causing the gas inside the storage tank to shrink, thereby causing the air pressure inside the storage tank to drop sharply, and observe the air pressure changes displayed on the processing computer monitor 2. When the air pressure on the processing computer monitor 2 drops to a certain value and no longer changes, this value is the negative pressure value when the breathing valve is opened.

[0027] After the negative pressure check is completed, the positive pressure check is performed. At this time, the negative pressure motor 502 slowly sucks out the gas in the storage tank through the positive pressure check tube 504, and the positive pressure motor 501 quickly discharges the gas into the storage tank through the positive pressure check tube 504. The discharge speed of the positive pressure motor 501 is faster than the suction speed of the positive pressure motor 501, which will gradually increase the air pressure inside the storage tank. At the same time, the gas discharged by the positive pressure motor 501 will pass through the positive pressure connecting tube 507 and be heated by the first heat conduction plate 509. When the hot gas is discharged into the storage tank, the gas inside the storage tank will expand, thereby causing the internal air pressure of the storage tank to rise sharply faster, and observe the air pressure changes displayed on the processing computer monitor 2. When the air pressure on the processing computer monitor 2 rises to a certain value and no longer changes, this value is the positive pressure value when the breathing valve is opened.

[0028] Example 2: Please refer to Figure 1-8 Based on the first embodiment, the present invention provides a technical solution: The air source holding component 6 includes an insulation box 601, a positive pressure air pipe 602 is fixedly connected to the left side of the insulation box 601, a negative pressure air pipe 603 is fixedly connected to the left side of the insulation box 601 in front of the positive pressure air pipe 602, and the positive pressure air pipe 602 is fixedly connected to the positive pressure connecting pipe 507, and the negative pressure air pipe 603 is fixedly connected to the negative pressure connecting pipe 508.

[0029] The insulation box 601 is located between the positive pressure air pipe 602 and the negative pressure air pipe 603 and is movably connected with an insulation plate 604. Two guide plates 607 are fixedly connected inside the insulation box 601, and the insulation plate 604 is movably connected to the two guide plates 607. The outer walls of the two guide plates 607 are fixedly connected with two limiting blocks 608.

[0030] When performing a negative pressure check, the gas discharged from the inside of the storage tank by the positive pressure motor 501 through the negative pressure check tube 503 will pass through the negative pressure connecting tube 508 and be stored on the back side of the insulation board 604 inside the insulation box 601. This gas will be heated into hot gas by the negative pressure connecting tube 508 after passing through the negative pressure connecting tube 508. Then, when performing a positive pressure check again, the positive pressure motor 501 will discharge the hot gas into the storage tank through the negative pressure check tube 503. These gases will pass through the negative pressure connecting tube 508 again, so that the gas will be heated again, which will make the temperature of the gas change higher, which will make the gas temperature inside the storage tank become higher, and then will further increase the speed of the internal air pressure rise of the storage tank during the positive pressure check.

[0031] After completing the calibration of the breathing valve on one storage tank, the breathing valve of the next storage tank is calibrated immediately. When the positive pressure calibration is performed on the previous breathing valve, the gas sucked from the storage tank by the negative pressure motor 502 is discharged to the front of the insulation board 604 inside the insulation box 601 through the negative pressure connecting pipe 508. When the next breathing valve is calibrated, the negative pressure motor 502 will discharge the cold air into the storage tank. The cold air will be cooled again after passing through the positive pressure connecting pipe 507, making the temperature of the gas discharged into the storage tank lower, further reducing the temperature inside the storage tank, and further increasing the speed at which the air pressure inside the storage tank is reduced during the negative pressure calibration.

[0032] The limiting block 608 limits the position of the heat insulating plate 604 , so that the heat insulating plate 604 is always located between the positive pressure connecting air pipes 602 and the positive pressure connecting air pipes 602 .

[0033] Avoid the gases on the front and rear sides of the insulation board 604 inside the insulation box 601 from contacting and affecting each other through the positive pressure air pipe 602 or the insulation board 604.

[0034] An electromagnetic ventilation valve 605 is fixedly connected inside the insulation plate 604, and springs 606 are fixedly connected to the front and rear sides of the insulation plate 604, and the springs 606 are fixedly connected to the inner wall of the insulation box 601. When the electromagnetic ventilation valve 605 is opened, the front and rear sides of the insulation plate 604 will be connected, and the insulation plate 604 will be located in the middle of the insulation box 601 under the action of the two springs 606 to evenly distribute the gas inside the insulation box 601. A vent 609 is provided on the back of the insulation box 601, and the outer wall of the vent 609 is movably connected to a sealing cover through a thread.

[0035] Before calibrating the storage tank, open the electromagnetic vent valve 605 to allow the front and rear sides of the insulation plate 604 to communicate with each other through the electromagnetic vent valve 605, open the sealing cover on the vent 609, and allow the interior of the insulation box 601 to be filled with gas that is compatible with the interior of the storage tank, and then seal the vent 609 with the sealing cover. After completing the calibration, open the electromagnetic vent valve 605 to allow the front and rear sides of the insulation plate 604 to communicate with each other to promote uniform distribution of the gas.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An online calibration device for a storage tank breathing valve, comprising an explosion-proof box (1), characterized in that: A processing computer display (2) is fixedly connected inside the explosion-proof box (1), a processing computer operation area (3) is fixedly connected inside the explosion-proof box (1) at the bottom of the processing computer display (2), an information processing module (4) is fixedly connected inside the explosion-proof box (1) at the bottom of the processing computer operation area (3), a partition plate is fixedly connected inside the explosion-proof box (1) at the right side of the information processing module (4), a pressure control mechanism (5) is fixedly connected to the right side of the partition plate, and a gas source holding component (6) is fixedly connected to the front of the pressure control mechanism (5); The pressure control mechanism (5) comprises: A positive pressure motor (501), wherein the positive pressure motor (501) is fixedly connected inside the explosion-proof box (1); A negative pressure motor (502), the negative pressure motor (502) being fixedly connected inside the explosion-proof box (1) and located on the left side of the positive pressure motor (501); A negative pressure calibration tube (503), wherein the negative pressure calibration tube (503) is fixedly connected to the back of the negative pressure motor (502); A positive pressure calibration tube (504), wherein the positive pressure calibration tube (504) is fixedly connected to the back of the positive pressure motor (501).

2. The on-line calibration device for a tank breathing valve according to claim 1 is characterized in that: The outer wall of the negative pressure calibration tube (503) is fixedly connected to a sensor integrated block (505), the outer wall of the positive pressure calibration tube (504) is fixedly connected to a sensor integrated block (505), a pressure sensor is integrated inside the sensor integrated block (505), and quick-release connectors are provided at the outer ends of the positive pressure calibration tube (504) and the negative pressure calibration tube (503) to facilitate connection with the breathing valve calibration seat.

3. The online calibration device for a tank breathing valve according to claim 1 is characterized in that: A temperature control box (506) is arranged on the front of the explosion-proof box (1), a semiconductor cooling plate (511) is fixedly connected inside the temperature control box (506), a first heat conducting plate (509) is fixedly connected to the right side of the semiconductor cooling plate (511), a positive pressure connecting pipe (507) is fixedly connected to the right side of the first heat conducting plate (509), a second heat conducting plate (510) is fixedly connected to the left side of the semiconductor cooling plate (511), and a negative pressure connecting pipe (508) is fixedly connected to the left side of the second heat conducting plate (510).

4. The on-line calibration device for a tank breathing valve according to claim 3 is characterized in that: The negative pressure connecting pipe (508) is fixedly connected to the negative pressure motor (502), and the positive pressure connecting pipe (507) is fixedly connected to the positive pressure motor (501).

5. The on-line calibration device for a tank breathing valve according to claim 3 is characterized in that: The gas source holding component (6) comprises an insulation box (601), a positive pressure air connection pipe (602) being fixedly connected to the left side of the insulation box (601), a negative pressure air connection pipe (603) being fixedly connected to the left side of the insulation box (601) in front of the positive pressure air connection pipe (602), the positive pressure air connection pipe (602) being fixedly connected to the positive pressure connection pipe (507), and the negative pressure air connection pipe (603) being fixedly connected to the negative pressure connection pipe (508).

6. The on-line calibration device for a tank breathing valve according to claim 5 is characterized in that: The heat preservation box (601) is movably connected with an insulation plate (604) located between the positive pressure air pipe (602) and the negative pressure air pipe (603); two guide plates (607) are fixedly connected inside the heat preservation box (601); the insulation plate (604) is movably connected to the two guide plates (607); and the outer walls of the two guide plates (607) are fixedly connected with two limiting blocks (608).

7. The on-line calibration device for a tank breathing valve according to claim 6 is characterized in that: The limiting block (608) limits the position of the heat insulating plate (604), so that the heat insulating plate (604) is always located between the positive pressure air pipes (602) and the positive pressure air pipes (602).

8. The on-line calibration device for a tank breathing valve according to claim 7 is characterized in that: An electromagnetic ventilation valve (605) is fixedly connected inside the insulation plate (604), springs (606) are fixedly connected to both the front and rear sides of the insulation plate (604), and the springs (606) are fixedly connected to the inner wall of the insulation box (601), and a ventilation port (609) is provided on the back of the insulation box (601), and a sealing cover is movably connected to the outer wall of the ventilation port (609) via a thread.

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