Gas leak detector

Abstract

The utility model relates to the technical field of gas leak detection, and discloses a gas leak detector, which comprises a detector shell, a connector is arranged at the top of the detector shell, a connecting cable is arranged at the top of the connector, and a leak detection device is arranged at the bottom of the connecting cable. And a pay-off device is arranged on the side surface of the detection instrument shell. According to the gas leak detector, the leak detection device is arranged, the gas pump at the top end of the gas box is discontinuously started to generate suction force, gas near a detection area is adsorbed, the sealing plug-in unit needs to be opened during use, the gas can be adsorbed after leakage, and temperature and humidity detection is carried out through the temperature and humidity detection sensor; the influence of environment temperature and humidity on gas leakage is monitored while gas leakage is detected, the device is provided with the shunt adsorption assembly during detection, four adsorption ports are attached to and close to a to-be-detected area, and the adsorption detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leak detection, in particular to a gas leak detector. Background Art

[0002] Gas leak detection instruments consist of detectors and alarm control hosts. They are widely used in petroleum, gas, chemicals, oil depots and other petrochemical industries where toxic gases exist. They are used to detect leaks in indoor and outdoor hazardous places. They are important instruments for ensuring production and personal safety.

[0003] The prior art discloses an energy-saving gas leak detector with announcement number CN110440988A, which includes a leak detector body, a probe tube, and a probe head. A control circuit board is installed in the leak detector body, a handle is installed at the bottom end thereof, and a rubber anti-slip strip is provided on the handle. A battery electrically connected to the leak detector body is provided inside the handle. An air inlet 1 and an air inlet 2 are provided at the top of the leak detector body. Air inlet 1 and air inlet 2 are respectively connected to a main air inlet pipe and a backup air inlet pipe, and the output end of the main air inlet pipe is connected to the probe tube. A data line connected to the control circuit board is installed in the backup air inlet pipe. A detection head is installed at the end of the probe tube away from the main air inlet pipe. The detection head includes a detection tube, a probe, an air suction fan, and an air suction hood. The detection tube is open at both ends, one end of which is connected to the probe tube, and the other end of which is provided with a threaded section 1. The above device is small in size and easy to use. While ensuring the detection effect, it can effectively improve the detection efficiency.

[0004] The above-mentioned gas leak detector is equipped with a main air intake pipe and a spare air intake pipe. The spare air intake pipe serves as a backup. When the probe is damaged, it is only necessary to connect the detection head to the data cable on the spare air intake pipe to continue the detection. However, the above-mentioned device does not have a diversion adsorption component when performing detection, the adsorption port is single, the adsorption detection efficiency is low, and the effect during use is not good, which needs to be improved. Utility Model Content

[0005] The purpose of the present utility model is to provide a gas leak detector to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a gas leak detector, comprising a detection instrument shell, a connector is provided on the top of the detection instrument shell, a connecting cable is provided on the top of the connector, a leak detection device is provided on the bottom of the connecting cable, and a wire-releasing device is provided on the side of the detection instrument shell.

[0007] The leak detection device includes a top connecting plate, a connecting tube, a hollow ring part, an air suction head, a bypass air pipe, a threaded end, a sealing plug-in, an air box, an air pump, an air supply pipe and a temperature and humidity detection sensor. The top connecting plate is fixedly connected to the bottom of the connecting tube, the temperature and humidity detection sensor is fixedly connected to the bottom of the top connecting plate, the air suction head is fixedly connected to the bottom of the connecting tube, the hollow ring part is fixedly connected to the surface of the air suction head, the bypass air pipe is fixedly connected to the bottom of the air suction head, the air box is fixedly connected to the top of the hollow ring part, the air pump is fixedly connected to the top of the air box, the air supply pipe is fixedly connected to the right side of the air pump, and the model of the temperature and humidity detection sensor is a QMF sensor.

[0008] Preferably, the side end connecting frame, the first clamping plate, the fixed ring pad, the inner elastic cylindrical pad, the second clamping plate, the hydraulic telescopic rod, the vertical plate and the elastic semicircular pad, the side end connecting frame is fixedly connected to the top right side of the detection instrument housing, the first clamping plate is fixedly connected to the back side of the side end connecting frame at the front end, the hydraulic telescopic rod is fixedly connected to the top of the first clamping plate, and the vertical plate is fixedly connected to the right side of the hydraulic telescopic rod.

[0009] Preferably, an annular groove is formed on the inner ring of the fixed ring gasket, and the inner elastic cylindrical gasket is fixedly connected to the inside of the fixed ring gasket.

[0010] Preferably, one end of the air delivery pipe away from the side of the air pump is fixedly connected to the top of the hollow annular member.

[0011] Preferably, the threaded end is fixedly connected to the bottom of the branch air pipe, and the sealing plug-in is threadedly connected to the surface of the threaded end.

[0012] Preferably, the bottom of the temperature and humidity detection sensor is connected to the left and right sides of the top of the hollow ring part, and the temperature and humidity detection sensor is used to perform temperature and humidity detection. While detecting gas leakage, it monitors the impact of ambient temperature and humidity on gas leakage. This can help users better understand the leakage situation and provide more accurate detection results.

[0013] Preferably, the top connecting plate is fixedly connected to an end of the connecting cable away from the top of the connector.

[0014] Preferably, a semicircular groove is provided on the right side of the first clamping plate, and the fixing ring washer is fixedly connected to the right side of the first clamping plate.

[0015] Preferably, the second clamping plate is provided with a wire releasing groove, the diameter of which is equal to the diameter of the semicircular groove. The hydraulic telescopic rod is started to drive the vertical plate to move to the left, and the second clamping plate is driven to move toward the first clamping plate until the elastic semicircular pad contacts the right side of the connecting cable, locking the cable to avoid damage caused by dragging. The second clamping plate is set to fix the cable and protect the cable.

[0016] Preferably, the second clamping plate is fixedly connected to the bottom of the vertical plate, and the elastic semicircular pad is fixedly connected to the left side of the second clamping plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The gas leak detector is equipped with a leak detection device. It intermittently starts the air pump on the top of the gas box to generate suction, and absorbs the gas near the detection area. When in use, the sealing plug-in needs to be opened. The gas can be absorbed after leakage. The temperature and humidity detection sensor is used to detect temperature and humidity. While detecting gas leaks, the influence of ambient temperature and humidity on gas leakage is monitored. The device is equipped with a diversion adsorption component during detection. The adsorption port is four points, which are close to the area to be detected, and the adsorption detection efficiency is high.

[0019] 2. The gas leak detector is equipped with a wire-releasing device to fit the connecting cable to the inner ring of the fixed ring pad. The inner elastic cylindrical pad provided inside the fixed ring pad can have a certain elasticity when placed for placing the cable. Cooperating with the second clamping plate at the other end, the elastic semicircular pad is in contact with the right side of the connecting cable to lock the cable, thereby avoiding damage caused by dragging and increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0022] Figure 3 This is a schematic side view of the overall structure of the utility model;

[0023] Figure 4 For this utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0024] In the figure: 1. Testing instrument housing; 2. Connector; 3. Connecting cable; 4. Leak detection device; 401. Top connecting plate; 402. Connecting tube; 404. Hollow ring member; 405. Suction head; 406. Branch air pipe; 407. Threaded end; 408. Sealing plug-in; 409. Air box; 410. Air pump; 411. Air pipe; 412. Temperature and humidity detection sensor; 5. Pay-off device; 501. Side end connecting frame; 502. First clamping plate; 503. Fixed ring pad; 504. Inner elastic cylindrical pad; 505. Second clamping plate; 506. Hydraulic telescopic rod; 507. Vertical plate; 508. Elastic semicircular pad. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4 , the utility model provides the following technical solutions:

[0027] A gas leak detector includes a detection instrument housing 1, a connector 2 is provided on the top of the detection instrument housing 1, a connecting cable 3 is provided on the top of the connecting head 2, a leak detection device 4 is provided on the bottom of the connecting cable 3, and a wire-releasing device 5 is provided on the side of the detection instrument housing 1.

[0028] The leak detection device 4 includes a top connecting plate 401, a connecting tube 402, a hollow annular member 404, an air suction head 405, a bypass air pipe 406, a threaded end 407, a sealing plug-in 408, an air box 409, an air pump 410, an air supply pipe 411 and a temperature and humidity detection sensor 412. The top connecting plate 401 is fixedly connected to the bottom of the connecting tube 402, the temperature and humidity detection sensor 412 is fixedly connected to the bottom of the top connecting plate 401, the air suction head 405 is fixedly connected to the bottom of the connecting tube 402, the hollow annular member 404 is fixedly connected to the surface of the air suction head 405, the bypass air pipe 406 is fixedly connected to the bottom of the air suction head 405, the air box 409 is fixedly connected to the top of the hollow annular member 404, the air pump 410 is fixedly connected to the top of the air box 409, the air supply pipe 411 is fixedly connected to the bottom of the air box Connected to the right side of the air pump 410, the model of the temperature and humidity detection sensor 412 is a QMF1660 sensor. The end of the air supply pipe 411 away from the side of the air pump 410 is fixedly connected to the top of the hollow ring part 404, and the threaded end 407 is fixedly connected to the bottom of the branch air pipe 406. The sealing plug-in 408 is threadedly connected to the surface of the threaded end 407. The bottom of the temperature and humidity detection sensor 412 is connected to the left and right sides of the top of the hollow ring part 404. The temperature and humidity detection sensor 412 is used to detect temperature and humidity. While detecting gas leakage, it monitors the impact of ambient temperature and humidity on gas leakage, which can help users better understand the leakage situation and provide more accurate detection results. The top connecting plate 401 is fixedly connected to the end of the connecting cable 3 away from the top of the connector 2.

[0029] The side end connecting frame 501, the first clamping plate 502, the fixed ring gasket 503, the inner elastic cylindrical gasket 504, the second clamping plate 505, the hydraulic telescopic rod 506, the vertical plate 507 and the elastic semicircular gasket 508, the side end connecting frame 501 is fixedly connected to the top right side of the detection instrument housing 1, the first clamping plate 502 is fixedly connected to the back side of the front end side end connecting frame 501, the hydraulic telescopic rod 506 is fixedly connected to the top of the first clamping plate 502, the vertical plate 507 is fixedly connected to the right side of the hydraulic telescopic rod 506, the second clamping plate 505 is fixedly connected to the bottom of the vertical plate 507, the elastic semicircular gasket 508 is fixedly connected to the left side of the second clamping plate 505, and the inner ring of the fixed ring gasket 503 is fixedly connected to the inner ring of the fixed ring gasket 503. An annular groove is provided, and the inner elastic cylindrical pad 504 is fixedly connected to the inside of the fixed ring pad 503. A semicircular groove is provided on the right side of the first clamping plate 502, and the fixed ring pad 503 is fixedly connected to the right side of the first clamping plate 502. A wire-releasing groove is provided on the second clamping plate 505, and the diameter of the wire-releasing groove is equal to the diameter of the semicircular groove. Starting the hydraulic telescopic rod 506 drives the vertical plate 507 to move to the left, and drives the second clamping plate 505 to move toward the first clamping plate 502 until the elastic semicircular pad 508 contacts the right side of the connecting cable 3, locking the cable to avoid dragging damage. The setting of the second clamping plate 505 plays the role of fixing the cable and is used to protect the cable.

[0030] When in use, a leak detection device 4 is provided at the bottom of the connecting cable 3. When in use, the leak detection device 4 is placed on the equipment to be tested, and then the air pump 410 at the top of the air box 409 can be started intermittently, and the air supply pipe 411 can be used to generate suction inside the hollow ring part 404, and the suction head 405 and the branch air pipe 406 structure at the bottom of the hollow ring part 404 follow to generate suction. When in use, the sealing plug-in 408 needs to be opened. When opening, the sealing plug-in 408 needs to be twisted downward to allow the opening at the bottom of the branch air pipe 406 to leak out. After leakage, gas can be adsorbed, and then the temperature and humidity detection sensor 412 is used to perform temperature and humidity detection. While detecting gas leakage, the influence of ambient temperature and humidity on gas leakage is monitored, which can help users better understand the leakage situation and provide more accurate detection results. Part of the adsorbed gas is detected by the temperature and humidity detection sensor 412, and most of it follows the connecting tube 402 into the connecting cable 3 and then into the interior of the detection instrument housing 1 for system detection, and it is necessary to detect it according to different detection environments and gases. The type automatically adjusts the detection parameters. When detecting high-concentration gas leaks, it automatically reduces the sensitivity to avoid saturation; when detecting trace leaks, it improves the sensitivity and prolongs the detection time. It can detect gas composition and quickly alarm when gas leakage occurs. The device is equipped with a diversion adsorption component during detection. The adsorption port is four points, which are close to the area to be detected. The adsorption detection efficiency is high and the effect is good when in use. A wire-releasing device 5 is provided on the side of the detection instrument housing 1, which can be used to retract and release the cable without dragging and placing it to cause damage. It needs to be retracted when not in use. When retracting and releasing, the connecting cable 3 needs to be attached to the inner ring of the fixed ring pad 503, and the inner elastic cylindrical pad 504 provided inside the fixed ring pad 503 can have a certain elasticity for placing the cable when placed. After placement, the hydraulic telescopic rod 506 can be started to drive the vertical plate 507 to move to the left, and drive the second clamping plate 505 to move toward the direction close to the first clamping plate 502 until the elastic semicircular pad 508 contacts the right side of the connecting cable 3, locking the cable to avoid dragging and damage, thereby increasing the service life of the device.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas leak detector, comprising a detection instrument housing (1), characterized in that: A connector (2) is provided on the top of the detection instrument housing (1), a connecting cable (3) is provided on the top of the connecting cable (2), a leak detection device (4) is provided on the bottom of the connecting cable (3), and a wire-releasing device (5) is provided on the side of the detection instrument housing (1); The leak detection device (4) comprises a top connecting plate (401), a connecting tube (402), a hollow annular member (404), an air suction head (405), a branching air pipe (406), a threaded end (407), a sealing plug (408), an air box (409), an air pump (410), an air delivery pipe (411) and a temperature and humidity detection sensor (412), wherein the top connecting plate (401) is fixedly connected to the bottom of the connecting tube (402), the temperature and humidity detection sensor (412) is fixedly connected to the bottom of the top connecting plate (401), and the air suction head (405) is connected to the branching air pipe (406), a threaded end (407), a sealing plug (408), an air box (409), an air pump (410), an air delivery pipe (411) and a temperature and humidity detection sensor (412). The head (405) is fixedly connected to the bottom of the connecting tube (402), the hollow annular member (404) is fixedly connected to the surface of the suction head (405), the branch air pipe (406) is fixedly connected to the bottom of the suction head (405), the air box (409) is fixedly connected to the top of the hollow annular member (404), the air pump (410) is fixedly connected to the top of the air box (409), the air delivery pipe (411) is fixedly connected to the right side of the air pump (410), and the model of the temperature and humidity detection sensor (412) is a QMF1660 sensor.

2. A gas leak detector according to claim 1, characterized in that: The pay-off device (5) comprises a side connecting frame (501), a first clamping plate (502), a fixed ring pad (503), an inner elastic cylindrical pad (504), a second clamping plate (505), a hydraulic telescopic rod (506), a vertical plate (507) and an elastic semicircular pad (508), wherein the side connecting frame (501) is fixedly connected to the top right side of the detection instrument housing (1), the first clamping plate (502) is fixedly connected to the back side of the front end of the side connecting frame (501), the hydraulic telescopic rod (506) is fixedly connected to the top of the first clamping plate (502), and the vertical plate (507) is fixedly connected to the right side of the hydraulic telescopic rod (506).

3. A gas leak detector according to claim 2, characterized in that: An annular groove is provided on the inner ring of the fixed ring gasket (503), and the inner elastic cylindrical gasket (504) is fixedly connected to the interior of the fixed ring gasket (503).

4. A gas leak detector according to claim 1, characterized in that: One end of the air delivery pipe (411) away from the side of the air pump (410) is fixedly connected to the top of the hollow annular member (404).

5. A gas leak detector according to claim 1, characterized in that: The threaded end (407) is fixedly connected to the bottom of the branch air pipe (406), and the sealing plug-in (408) is threadedly connected to the surface of the threaded end (407).

6. A gas leak detector according to claim 1, characterized in that: The bottom of the temperature and humidity detection sensor (412) is connected to the left and right sides of the top of the hollow annular member (404).

7. A gas leak detector according to claim 1, characterized in that: The top connecting plate (401) is fixedly connected to an end of the connecting cable (3) away from the top of the connector (2).

8. A gas leak detector according to claim 2, characterized in that: A semicircular groove is provided on the right side of the first clamping plate (502), and the fixed ring washer (503) is fixedly connected to the right side of the first clamping plate (502).

9. A gas leak detector according to claim 8, characterized in that: The second clamping plate (505) is provided with a wire releasing groove, and the diameter of the wire releasing groove is equal to the diameter of the semicircular groove.

10. A gas leak detector according to claim 2, characterized in that: The second clamping plate (505) is fixedly connected to the bottom of the vertical plate (507), and the elastic semicircular pad (508) is fixedly connected to the left side of the second clamping plate (505).

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