Search

CN-121977820-A - Online checking device for breather valve

CN121977820ACN 121977820 ACN121977820 ACN 121977820ACN-121977820-A

Abstract

The invention discloses an online checking device for a breather valve, which comprises a protective box main body, wherein two mounting support plates are arranged in the protective box main body, a data processing device is arranged on the surface of the uppermost mounting support plate, a data processing control table corresponding to the data processing device is arranged on the surface of the lowermost mounting support plate, the data processing control table is electrically connected with the data processing device, a sealing air pump is arranged in the lower end of the protective box main body, supporting legs are arranged at four corners of the lower surface of the protective box main body, a sealing glass door is rotatably connected with one side surface of the protective box main body, an interface is arranged at one side of the protective box main body, and the online checking device adopts a point-to-point connection mode, so that the artificial error is reduced, the requirement on excessive experience of a inspector is reduced, the safe and reliable technical guarantee is provided for online checking of the breather valve main body, the positive and negative pressure opening value of the breather valve main body can be checked under the condition that the production device is not detached or normally works, and the continuity of industrial production is ensured.

Inventors

  • DONG WANKUI
  • WU YU
  • ZHANG JUN

Assignees

  • 上海化学工业检验检测有限公司

Dates

Publication Date
20260505
Application Date
20260320

Claims (10)

  1. 1. The online checking device for the breather valve comprises a protective box main body (1) and is characterized in that two mounting support plates (9) are arranged in the protective box main body (1), a data processing device (10) is arranged on the surface of the uppermost mounting support plate (9), a data processing control table (8) corresponding to the data processing device (10) is arranged on the surface of the lowermost mounting support plate (9), the data processing control table (8) is electrically connected with the data processing device (10), a sealing air pump (6) is arranged in the lower end of the protective box main body (1), supporting legs (3) are arranged at four corners of the lower surface of the protective box main body (1), a sealing glass door (7) is rotatably connected to one side surface of the protective box main body (1), an interface (15) is arranged on one side of the protective box main body (1), an air pipe (13) is communicated with one side of the interface (15), a connecting wire (14) is connected to the other side of the interface (15), and one end of the air pipe (13) and the connecting wire (14) is provided with a breather valve main body (12).
  2. 2. The online verification device for breather valve of claim 1, wherein an electric push rod base (17) is installed inside four corners of the lower end of the protective box main body (1), a supporting leg cavity (18) is formed inside the supporting leg (3), a supporting telescopic rod (19) corresponding to the supporting leg cavity (18) is inserted inside the lower end of the electric push rod base (17), a connecting plate (22) is arranged at the lower end of the supporting telescopic rod (19), and a universal wheel (4) is installed at the lower end of the connecting plate (22).
  3. 3. The online verification device for breather valve according to claim 2, wherein limiting sliding grooves (20) are formed in the inner walls of the two sides of the supporting leg cavity (18), limiting sliding rods (21) are arranged in the limiting sliding grooves (20), the two ends of the connecting plate (22) are connected to the outer surfaces of the limiting sliding rods (21) in a sliding mode, and the two ends of the connecting plate (22) are connected to the inner portions of the limiting sliding grooves (20) in a sliding mode.
  4. 4. The online verification device for breather valve according to claim 1, wherein sliding grooves (16) are formed in two sides of the lower end of the inside of the protective box main body (1), a sound insulation partition plate (2) corresponding to the sliding grooves (16) is inserted into one side of the installation support plate (9) at the lowest end, and two ends of the sound insulation partition plate (2) are connected inside the sliding grooves (16) in a sliding mode.
  5. 5. The online verification device for breather valve of claim 4, wherein a sealing slot (23) corresponding to the sound insulation partition plate (2) is formed in one side surface of the inner lower end of the protective box main body (1), an upper magnetic suction block (25) is arranged at the lower end of the sound insulation partition plate (2), and a lower magnetic suction block (24) corresponding to the upper magnetic suction block (25) is arranged at the lower end of the sealing slot (23).
  6. 6. The online checking device of the breather valve of claim 1, wherein one side of the interface (15) is rotatably connected with an interface sealing cover (11).
  7. 7. The online verification device for the breather valve according to claim 1, wherein a storage box (5) is inserted into the lower end of the protective box main body (1).
  8. 8. The online verification device for breather valve of claim 1, wherein the inner wall of the protective box body (1) is filled with soundproof cotton (26).
  9. 9. The online checking device of the breather valve of claim 1, wherein the air pipe (13) is made of food-grade silica gel, and the outer layer is wrapped with a metal woven explosion-proof layer.
  10. 10. The online checking device of the breather valve according to claim 1, wherein the sealed air pump (6) adopts a double-cylinder piston type structure and has a pressure gradient rate adjusting function.

Description

Online checking device for breather valve Technical Field The invention relates to the technical field of breather valve verification, in particular to an online breather valve verification device Background In tank systems in the petrochemical field, breather valves are like precision pressure "goalkeepers" that keep the line of industrial safety through a dynamic balance mechanism. When the internal pressure of the storage tank exceeds a set threshold value due to material filling or temperature rise, the exhaust structure of the storage tank can be accurately triggered to respond and release excessive pressure in millisecond level, so that metal fatigue fracture of the container due to overpressure is avoided, and when negative pressure is caused by material output or environmental temperature reduction, the air suction channel can be timely opened to prevent the storage tank from being flattened by external atmospheric pressure. The bidirectional regulating mechanism can not only stop the explosion risk caused by the leakage of inflammable and explosive media such as benzene, oil gas and the like, but also avoid the environmental pollution caused by the leakage of acid-base corrosive substances. The data show that the pressure deviation rate of the respiratory valve which is not checked regularly increases exponentially with the increase of the service life, and the failure risk of equipment over 5 years is 7.2 times of that of newly installed equipment, so that the establishment of a periodic checking mechanism becomes a mandatory requirement of industrial safety regulations. The breather valve checking device constructs an intelligent physical examination center of industrial equipment through a full-flow automation technology. The device adopts the modularized design, and quick connection assembly can adapt to full specification breather valves such as DN25-DN300, through pressure closed loop control system, with plus or minus pressure operating mode of 0.5%FS's precision simulation, cooperation high-speed data acquisition module catches the pressure fluctuation curve in the case opening moment in real time. In the verification process, the system automatically generates a detection report containing 12 core indexes such as opening pressure, closing pressure, leakage quantity and the like, and intelligently compares the detection report with national standards such as GB/T24929-2021 and the like, and abnormal items automatically trigger red early warning. Compared with the traditional manual verification, the device requires 2-3 hours/station of inefficient operation, the single verification time is compressed to be within 15 minutes, and the data repeatability error is controlled within +/-1.5%. The method is widely applied to the scenes of crude oil storage tank groups in oil refineries, reaction kettle systems in chemical industry parks, LNG transport tank trucks and the like, provides accurate diagnosis of breather valve performance for over 5000 industrial enterprises in a cumulative way, effectively reduces the production interruption risk caused by failure of safety accessories, and becomes an important technical support of modern industrial intrinsic safety systems. However, the traditional breather valve is checked and is required to be disassembled and then sent to a laboratory or detected by offline equipment, and the operation of the storage tank is required to be suspended during the disassembly, so that the operation is interrupted, the production continuity is affected, and the shutdown loss and the labor cost are increased possibly. Therefore, the invention provides an online checking device for the breather valve. Disclosure of Invention In order to make up the defects of the prior art, the problems that the traditional breather valve is required to be disassembled and then sent to a laboratory or detected by offline equipment, and the operation of a storage tank is required to be suspended during disassembly, so that the operation is interrupted, the production continuity is affected, the shutdown loss and the labor cost are possibly increased are solved, and the breather valve online verification device is provided. The on-line checking device for the breather valve comprises a protective box main body, wherein two installation support plates are arranged in the protective box main body, a data processing device is arranged on the surface of the uppermost installation support plate, a data processing control table corresponding to the data processing device is arranged on the surface of the lowermost installation support plate, the data processing control table is electrically connected with the data processing device, a sealing air pump is arranged in the lower end of the protective box main body, supporting legs are arranged at four corners of the lower surface of the protective box main body, a sealing glass door is rotatably connected to one side surface of the protective box m