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CN-121762625-B - Itinerant harmful gas overrun check out test set

CN121762625BCN 121762625 BCN121762625 BCN 121762625BCN-121762625-B

Abstract

The invention discloses a tour type harmful gas overrun detection device, which relates to the technical field of gas detection devices and comprises a detector, wherein a detection probe is arranged in the detector, an air inlet pipe and an air outlet pipe are arranged at the top of the detector, a protection cylinder used for surrounding the detection probe is arranged in the detector, a telescopic cylinder used for being in butt joint or separation with the air outlet pipe is arranged outside the protection cylinder in a sliding manner, a fan is arranged in the telescopic cylinder, and a shaft lever is arranged in the air outlet pipe. This inspection tour harmful gas overrun check out test set through setting up the structure such as protective casing, telescopic cylinder, realizes the full dimension, the differentiation clearance of pipeline and test probe, has both protected test probe through directional the sweeping of low discharge, has cleared away the pipeline through the sealed sweeping of large discharge again and has remained, effectively avoids the residual interference when detecting in the cross region, promotes the accuracy and the reliability of detected data, the actual demand of adaptation multiscope inspection.

Inventors

  • WANG XIAOLEI

Assignees

  • 艾科思电子科技（常州）有限公司

Dates

Publication Date
20260505
Application Date
20260302

Claims (8)

  1. 1. The circulating harmful gas overrun detection device comprises a detector (1), wherein a detection probe (4) is arranged in the detector (1), and is characterized in that an air inlet pipe (2) and an air outlet pipe (3) are arranged at the top of the detector (1); the inside of the detector (1) is provided with a protective cylinder (5) for surrounding the protective detection probe (4), the outside of the protective cylinder (5) is provided with a telescopic cylinder (6) for being in butt joint or separation with the air outlet pipe (3) in a sliding way, and the inside of the telescopic cylinder (6) is provided with a fan (8); a shaft lever (10) is arranged in the air outlet pipe (3), a top plug (11) for controlling the opening and closing of the air outlet pipe (3) is arranged on the shaft lever (10) in a sliding manner, a chute (12) is arranged at the top of the top plug (11), and an inner groove (13) is formed in the inner wall of the air outlet pipe (3); during detection, external air enters the protective cylinder (5) from the side parts of the air inlet pipe (2) and the protective cylinder (5) to be contacted with the detection probe (4), and meanwhile, the air pushes the top plug (11) to slide upwards to be discharged; During back blowing, the air outlet end of the air bottle (26) is inserted into the air outlet pipe (3), the ejector pin of the air bottle is in contact with the shaft lever (10), the bottom end of the shaft lever (10) is abutted against the fan (8) in the first stage, the chute (12) is communicated with the inner groove (13) to supply the small-flow back blowing detection probe (4) of the air in the air bottle (26), the telescopic cylinder (6) wraps the protection cylinder (5), the top end of the telescopic cylinder (6) is closed by the ejector plug (11), and the large-flow back blowing air inlet pipe (2) of the air in the air bottle (26) is formed; an inner plate (9) for assisting the shaft lever (10) to stably slide is fixedly arranged on the inner wall of the telescopic cylinder (6), a second spring (14) matched with the top plug (11) is sleeved at the top end of the shaft lever (10), a third spring (15) matched with the inner plate (9) is sleeved at the bottom end of the shaft lever (10), a first spring (7) is fixed between the top end of the telescopic cylinder (6) and the inner wall of the detector (1), and the elastic supporting force of the first spring (7), the third spring (15) and the second spring (14) is sequentially reduced; the side of the protective cylinder (5) is provided with a side groove (501) for gas to flow.
  2. 2. The circulating harmful gas overrun detection device according to claim 1, wherein a blocking plate (16) is fixedly connected to the bottom of the top plug (11), the blocking plate (16) is arc-shaped, the blocking plate (16) is attached to the inner wall of the air outlet pipe (3), and the blocking plate (16) is close to the air inlet pipe (2).
  3. 3. A circulating type harmful gas overrun detecting apparatus according to claim 1, wherein the axial length of the air inlet pipe (2) is longer than the axial length of the air outlet pipe (3).
  4. 4. The circulating type harmful gas overrun detecting device according to claim 1, wherein a filter plate (17) for intercepting impurities is fixedly arranged at the top of the air inlet pipe (2), the filter plate (17) comprises an elastic piece (1701) and a hard piece (1702), the elastic piece (1701) is fixedly connected to the inner wall of the air inlet pipe (2), and the hard piece (1702) is fixedly connected to the inside of the elastic piece (1701).
  5. 5. The circulating harmful gas overrun detecting device according to claim 4, wherein a circular plate (19) is rotatably arranged in the air inlet pipe (2), magnetic force components for assisting reset of the circular plate (19) are arranged on two sides of the circular plate (19), each magnetic force component comprises a second magnet (24) and a third magnet (25), the second magnet (24) is fixedly inlaid on the inner wall of the air inlet pipe (2), the third magnet (25) is fixedly inlaid on the outer wall of the circular plate (19), the second magnet (24) is in attractive fit with the third magnet (25), a first magnet (18) is fixedly inlaid at the bottom of the hard piece (1702), and the first magnet (18) is in repulsive fit with the third magnet (25).
  6. 6. The tour type harmful gas overrun detecting device according to claim 5, wherein a slide box (21) is arranged on the circular plate (19), and a counterweight ball (22) is arranged in the slide box (21).
  7. 7. The tour type harmful gas overrun detecting device according to claim 6, wherein the two ends of the sliding box (21) are both fixed with elastic pieces (23), and the elastic pieces (23) are provided with through holes (2301).
  8. 8. A circulating type harmful gas overrun detecting apparatus according to claim 1, wherein the height of the inner tank (13) is greater than the height of the top plug (11).

Description

Itinerant harmful gas overrun check out test set Technical Field The invention relates to the technical field of gas detection equipment, in particular to a circulating harmful gas overrun detection device. Background The gas detector is an instrument tool for detecting gas leakage concentration, and comprises a portable gas detector, a handheld gas detector, a fixed gas detector, an online gas detector and the like. Gas sensors are mainly used to detect the gas species present in the environment, and are sensors for detecting the composition and content of the gas. In the harmful gas overrun detection equipment in the prior art, after gas detection is completed, partial gas residual substances are inevitably attached to the inner wall surface of the gas inlet cylinder, and the problem is particularly remarkable in the multi-region tour detection scene, when the equipment moves from one detection region to another detection region, if the residual substances on the inner wall of the gas inlet cylinder are not removed in time, a newly collected gas sample can be mixed with the residual substances, or the residual substances can be analyzed and reacted, so that the gas concentration data acquired by the detection module deviate from a true value, the true safety state of the detection region is difficult to accurately reflect, false alarm or leakage alarm can be triggered, and great hidden danger is brought to site safety protection. Therefore, it is necessary to provide a circulating type harmful gas overrun detecting apparatus to solve the above problems. Disclosure of Invention The invention aims to provide a circulating harmful gas overrun detection device, which aims to solve the problems that when the device moves from one detection area to another detection area, if residual substances on the inner wall of an air inlet cylinder are not removed in time, a newly collected gas sample can be mixed with the residual substances, or the residual substances are analyzed and reacted, so that gas concentration data acquired by a detection module deviate from a true value, the true safety state of the detection area is difficult to accurately reflect, false alarm or alarm leakage can be possibly caused, and great hidden danger is brought to site safety protection. In order to achieve the aim, the invention provides the technical scheme that the tour harmful gas overrun detection equipment comprises a detector, wherein a detection probe is arranged in the detector, and an air inlet pipe and an air outlet pipe are arranged at the top of the detector; The inside of the detector is provided with a protective cylinder for surrounding the protective detection probe, the outside of the protective cylinder is provided with a telescopic cylinder in a sliding manner for being in butt joint or separation with the air outlet pipe, and the inside of the telescopic cylinder is provided with a fan; A shaft rod is arranged in the air outlet pipe, a top plug for controlling the opening and closing of the air outlet pipe is arranged on the shaft rod in a sliding manner, a chute is arranged at the top of the top plug, and an inner groove is arranged on the inner wall of the air outlet pipe; during detection, external air enters the protective cylinder from the side parts of the air inlet pipe and the protective cylinder to contact with the detection probe, and meanwhile, the air pushes the top plug to slide upwards to be discharged; during back blowing, the gas outlet end of the gas cylinder is inserted into the gas outlet pipe, the thimble of the gas cylinder is contacted with the shaft rod, the bottom end of the shaft rod is abutted with the fan in the first stage, the chute is communicated with the inner groove to supply a small-flow back blowing detection probe for gas in the gas cylinder, the telescopic cylinder wraps the protective cylinder in the second stage, the top end of the telescopic cylinder is closed by the top plug, and the gas in the gas cylinder is blown back into the gas pipe in a large flow mode. Preferably, the inner wall of the telescopic cylinder is fixedly provided with an inner plate for assisting the shaft rod to stably slide, the top end of the shaft rod is sleeved with a second spring matched with the top plug, the bottom end of the shaft rod is sleeved with a third spring matched with the inner plate, a first spring is fixed between the top end of the telescopic cylinder and the inner wall of the detector, and the elastic supporting force of the first spring, the third spring and the second spring is sequentially reduced. Preferably, the side of the protective cylinder is provided with a side groove for the gas to flow. Preferably, the bottom fixedly connected with barrier of top stopper, the barrier is the arc form, and on the inner wall of barrier laminating outlet duct, the barrier is close to the intake pipe. Preferably, the axial length of the air inlet pipe is greater than the axial length of the