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CN-224216126-U - Temperature and pressure compensation device of gas flowmeter

CN224216126UCN 224216126 UCN224216126 UCN 224216126UCN-224216126-U

Abstract

The utility model provides a temperature and pressure compensation device of a gas flowmeter, which comprises a connecting pipe, a mounting pipe, a probe, a first sealing ring and a second sealing ring. According to the temperature and pressure compensation device for the gas flowmeter, the first sealing is realized by arranging the first sealing ring between the mounting pipe and the fixing plate. A second sealing ring is also installed inside the mounting tube and is pressed between the pressing down table on the probe and the supporting table on the inner wall of the mounting tube, and when the fixing plate is fixed to the mounting tube, the second sealing ring is pressed between the pressing down table and the supporting table. Thus forming a second seal between the probe and the mounting tube. Through the setting of first sealing washer and second sealing washer, can realize double seal between probe and installation pipe, effectively improve the sealed effect between probe and the installation pipe to improve the security in the use.

Inventors

  • Chang Tongqian
  • LIU DAWEI

Assignees

  • 衡水多元仪表有限公司

Dates

Publication Date
20260508
Application Date
20250509

Claims (8)

  1. 1. A gas flow meter temperature and pressure compensation device, comprising: a connecting pipe (1); one end of the mounting pipe (2) is connected to the middle part of the connecting pipe (1) and is communicated with the connecting pipe (1); A probe (3) is inserted into the mounting tube (2), and a fixing plate (31) used for being fixed to the end part of the mounting tube (2) is connected to the probe (3) in a sealing way; a first sealing ring (4) installed between the fixing plate (31) and the installation tube (2) for sealing between the fixing plate (31) and the installation tube (2); The second sealing ring (5) is sleeved on the outer side of the probe (3), a pressing table (32) for pressing the second sealing ring (5) is arranged on the probe (3), and a supporting table (21) for supporting the second sealing ring (5) is arranged on the inner wall of the mounting tube (2).
  2. 2. The gas flowmeter temperature and pressure compensation device according to claim 1, wherein a plurality of extrusion rings (6) are sleeved on the outer side of the probe (3), and a second sealing ring (5) is arranged between every two adjacent extrusion rings (6).
  3. 3. A gas flow meter temperature and pressure compensating device according to claim 2, characterized in that the squeeze ring (6) is slidingly arranged inside the mounting tube (2).
  4. 4. The temperature and pressure compensation device for the gas flowmeter according to claim 1, wherein a guide part (311) is convexly arranged on one side of the fixing plate (31) close to the mounting pipe (2), and a guide hole which is in sliding fit with the guide part (311) is arranged on the inner wall of the mounting pipe (2).
  5. 5. The temperature and pressure compensation device for the gas flowmeter according to claim 1, wherein a limit rib (22) is arranged on the inner wall of the middle part of the installation tube (2) in a protruding mode, a limit block (33) is arranged on the outer side of the probe (3) in a protruding mode, and a yielding port for avoiding the limit block (33) to move to the lower portion of the limit rib (22) is arranged on the limit rib (22).
  6. 6. The temperature and pressure compensation device for the gas flowmeter according to claim 5, wherein the bottom surface of the limiting rib (22) is a spiral structure taking the axis of the mounting pipe (2) as the center.
  7. 7. The gas flow meter temperature and pressure compensation device according to claim 5, wherein the number of the limiting blocks (33) is plural, and the plurality of limiting blocks (33) are uniformly arranged at intervals along the circumferential direction of the probe (3).
  8. 8. The gas flowmeter warm-pressing compensation device according to claim 1, wherein an annular groove for installing the first sealing ring (4) is concavely arranged at the end part of the installation tube (2), and when the first sealing ring (4) is installed inside the annular groove, the first sealing ring (4) protrudes out of the end face of the installation tube (2).

Description

Temperature and pressure compensation device of gas flowmeter Technical Field The utility model belongs to the technical field of gas flow meters, and particularly relates to a temperature and pressure compensation device of a gas flow meter. Background When measuring the flow rate of gas, the pressure and temperature changes of the gas affect the measurement result of the flow rate of gas, so a temperature and pressure compensation device is generally used to detect the temperature and pressure inside the pipeline to dynamically compensate the measurement result. The current temperature and pressure compensation device generally adopts a main pipeline with flanges at two ends, and a mounting pipe for mounting a measuring probe is arranged in the middle of the main pipeline. A flange for fixing to the mounting tube is fixedly mounted on the outside of the measuring probe. The sealing mode between the measuring probe and the mounting pipe is generally to increase the sealing ring between the flange and the mounting pipe, a single-layer sealing mode is adopted, gas leakage is easy to occur after the sealing ring is invalid in the use process, gas waste is caused, and when dangerous gas is measured, if the gas leakage occurs, dangerous occurrence can be caused. Disclosure of utility model The embodiment of the utility model provides a temperature and pressure compensation device for a gas flowmeter, which aims to solve the problem that the sealing effect of the existing temperature and pressure compensation device for the gas flowmeter is not ideal. In order to achieve the purpose, the utility model adopts the technical scheme that the temperature and pressure compensation device of the gas flowmeter comprises: a connecting pipe; One end of the mounting tube is connected to the middle part of the connecting tube and is communicated with the connecting tube; The probe is inserted into the mounting tube, and a fixing plate used for being fixed to the end part of the mounting tube is connected to the probe in a sealing manner; The first sealing ring is arranged between the fixed plate and the mounting pipe and is used for sealing the fixed plate and the mounting pipe; The second sealing ring is sleeved on the outer side of the probe, a pressing table used for pressing the second sealing ring is arranged on the probe, and a supporting table used for supporting the second sealing ring is arranged on the inner wall of the mounting pipe. In one possible implementation manner, a plurality of extrusion rings are sleeved on the outer side of the probe, and a second sealing ring is arranged between every two adjacent extrusion rings. In one possible implementation, the squeeze ring is slidingly disposed inside the mounting tube. In one possible implementation manner, a guide part is convexly arranged on one side, close to the mounting tube, of the fixing plate, and a guide hole in sliding fit with the guide part is arranged on the inner wall of the mounting tube. In one possible implementation manner, a limiting rib is arranged on the inner wall of the middle of the mounting pipe in a protruding mode, a limiting block is arranged on the outer side of the probe in a protruding mode, and a yielding port used for avoiding the limiting block to move to the lower portion of the limiting rib is arranged on the limiting rib. In one possible implementation, the bottom surface of the limiting rib is a spiral structure centered on the axis of the mounting tube. In one possible implementation manner, the number of the limiting blocks is a plurality, and the limiting blocks are uniformly arranged at intervals along the circumferential direction of the probe. In one possible implementation, the end of the installation tube is concavely provided with an annular groove for installing the first sealing ring, and when the first sealing ring is installed inside the annular groove, the first sealing ring protrudes out of the end face of the installation tube. Compared with the prior art, the scheme provided by the embodiment of the application has the advantages that the connecting pipes are arranged, the flanges used for being connected to the conveying pipelines are arranged at the two ends of the connecting pipes, the installation pipes are arranged in the middle of the connecting pipes, the axes of the installation pipes are mutually perpendicular to the axes of the connecting pipes, and the installation pipes penetrate through the side walls of the connecting pipes. And a probe is detachably arranged on the mounting tube, a fixing plate is fixedly arranged on the outer side of the probe, and the fixing plate is in welded sealing connection with the probe. Fasteners for securing the fixing plate to the mounting tube are screwed at the ends of the mounting tube. According to the application, the first sealing is realized by arranging the first sealing ring between the mounting pipe and the fixing plate. And a second sealing ring is also