CN217954325U

CN217954325U - Combustible gas detector

Info

Publication number: CN217954325U
Application number: CN202222130865.2U
Authority: CN
Inventors: 刘玉; 李元俊; 姚敏
Original assignee: New Cosmos Electric Shanghai Co Ltd
Current assignee: New Cosmos Electric Shanghai Co Ltd
Priority date: 2022-08-13
Filing date: 2022-08-13
Publication date: 2022-12-02
Anticipated expiration: 2032-08-13

Abstract

The application discloses combustible gas detector, relate to the gas detector field, it includes the detector shell, be provided with the sensor on the detector shell, be provided with main circuit board and display circuit board in the detector shell, the detector shell is located sensor one side and is provided with clean sleeve, clean sleeve forms grafting cooperation and forms threaded connection with the detector shell with the sensor, still set firmly the clean box of splendid attire sanitizer on the detector shell, be provided with the pipeline between clean box and the clean sleeve, the both ends of pipeline communicate with clean box and clean sleeve respectively, and the weeping hole has been seted up to clean sleeve bottom, this application is connected through clean box and clean sleeve, can use the cleaning solution to clear up the sensor surface when the poisoning condition appears in the sensor, thereby the poisoning performance of sensor has been eliminated to a certain extent, the life of sensor has been prolonged, the change frequency of sensor has been reduced, and convenient to detach has, the characteristics that the cleaning performance is good.

Description

Combustible gas detector

Technical Field

The application relates to the field of gas detectors, in particular to a combustible gas detector.

Background

The existing gas detector is an instrument for detecting gas concentration, is suitable for dangerous places with combustible or toxic gases, can continuously detect the gas within the lower explosion limit content in the air for a long time, and can ensure the important guarantee of personal safety in other rooms of factories and goods.

In the related art, the monitoring method of the gas detector for the combustible gas is generally divided into catalytic combustion, semiconductor or infrared sensing, and the catalytic combustion mode has low cost, simple structure and high response speed of the sensor, so the sensor is widely used for detecting the combustible gas, but the sensor can be degraded in detection performance due to poisoning as the using time increases, the poisoning of the sensor is caused by that various dusts or ions emitted by the combustible gas in the catalytic combustion of the gas detector cover the surface of the detector, so the sensitivity of the sensor is reduced, the poisoning of the sensor usually comprises the poisoning of chlorine, lead, silicone and the like, the poisoned sensor needs to be cleaned or replaced, the cleaning or replacing period is short, the replacing process is complicated, and a part to be improved exists.

SUMMERY OF THE UTILITY MODEL

In order to prolong the replacement cycle of sensor under the prerequisite that does not influence sensor detection effect, this application provides a combustible gas detector.

The application provides a combustible gas detector adopts following technical scheme:

the utility model provides a combustible gas detector, includes the detector shell, be provided with the sensor on the detector shell, be provided with main circuit board and display circuit board in the detector shell, the detector shell is located sensor one side and is provided with clean sleeve, clean sleeve forms the grafting cooperation with the sensor and forms threaded connection with the detector shell, still set firmly the clean box of splendid attire sanitizer on the detector shell, be provided with the pipeline between clean box and the clean sleeve, the both ends of pipeline communicate with clean box and clean sleeve respectively, still be provided with the ooff valve on the pipeline, just the weeping hole has been seted up to clean sleeve bottom.

Through adopting above-mentioned technical scheme, the setting of clean box and clean sleeve can be when needs wash the sensor, will clean sleeve threaded connection in the sensor outside, and open the switch valve, make the cleaning solution along the clean sleeve of pipeline inflow, and wash the sensor, the cleaning solution can be discharged from clean sleeve bottom along the weeping hole during washing, and because the resistance after the sensor itself only is used for measuring gas to take place flameless burning, so the clearance process can not lead to the fact irreversible damage to the sensor, and can also eliminate the condition that the sensor is poisoned to a certain extent, be favorable to prolonging the life of sensor, the change cycle of extension sensor.

Preferably, the inner diameter of the cleaning sleeve is larger than the outer diameter of the sensor, a spiral guide groove is formed in the inner wall of the cleaning sleeve, and an air inlet hole convenient for air to enter is formed between any two spiral lines.

Through adopting above-mentioned technical scheme, the setting up of guiding gutter can carry out the water conservancy diversion to the cleaning solution, makes it be full of whole clean sleeve, is convenient for wash whole sensor, has improved the clean effect of clean sleeve to the sensor, has further improved the elimination effect of the sensor poisoning condition.

Preferably, a sealing plug is inserted into the liquid leakage hole, a sealing ring is arranged between the sealing plug and the wall of the liquid leakage hole, and the sealing ring is in butt fit with the sealing plug and the wall of the liquid leakage hole.

Through adopting above-mentioned technical scheme, the setting of sealing plug and sealing washer can prolong the time of cleaning solution in clean sleeve, improves the cleaning performance.

Preferably, an explosion-proof antenna is arranged on the detector shell.

Through adopting above-mentioned technical scheme, because combustible gas detector uses usually in inflammable and explosive gas and dust environment, in order to prevent that communication signal from detonating inflammable and gas and dust when signals or received signal, adopt wired transmission usually, explosion-proof antenna then can avoid this problem and carry out safe transmission to radio signal, has improved workspace's security, has ensured personal safety.

Preferably, an observation window is formed in the detector shell, a plurality of fixing columns are fixedly arranged on the bottom wall in the detector shell in the direction perpendicular to the observation window, the display circuit board is in butt joint with one side, away from the bottom wall of the detector shell, of each fixing column, a compression bolt is in threaded connection with one end, away from the bottom wall of the detector shell, of each fixing column, and the nut end of each compression bolt is in butt joint with the display circuit board.

Through adopting above-mentioned technical scheme, the setting of fixed column and clamp bolt can lock display circuit board between fixed column and clamp bolt, prevents because the detector is in the processing environment for a long time, and vibrations in the processing environment lead to the not hard up condition of droing of display circuit board to take place.

Preferably, inlay in the observation window and establish and be provided with the transparent plate, be provided with the packing ring between transparent plate and the observation window, one side that the transparent plate is close to main circuit board is provided with the clamping ring, the clamping ring forms interference fit with the observation window lateral wall.

Through adopting above-mentioned technical scheme, the setting of transparent plate can let the user see the signal that shows on the display circuit board clearly, and the setting of clamping ring and packing ring can improve the leakproofness of detector shell simultaneously, prevents that outside dust or humid air from getting into the inside condition emergence of corroding or polluting the internal circuit of detector shell.

Preferably, be provided with the audible and visual alarm subassembly on the detector shell, the audible and visual alarm subassembly includes the reputation casing with the detector shell intercommunication, still including setting up in the reputation casing and with the reputation circuit board, bee calling organ and the bulb that main circuit board electricity is connected, bee calling organ and bulb are connected with the reputation circuit board electricity, just the audible and visual alarm subassembly is still including installing the printing opacity cover and the waterproof sound-transmitting piece in reputation casing both sides, the bulb is installed in the printing opacity cover, bee calling organ installs the one side that is close to waterproof sound-transmitting piece in the reputation casing.

Through adopting above-mentioned technical scheme, audible and visual alarm subassembly can in time send out the police dispatch newspaper when the detector detects the unusual increase of combustible gas concentration to remind the staff in time sparse and flee for one's life, improved the security of staff's work in hazardous environment.

Preferably, the casing of the detector is provided with a fixing lug for fixing the casing on a wall or other plane.

Through adopting above-mentioned technical scheme, the setting of fixed ear can be fixed the detector on arbitrary plane, has improved the multiplex condition suitability of detector, also is convenient for look for and maintain after fixed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by means of the arrangement of the cleaning sleeve and the cleaning box, the sensor can be cleaned after being used for a period of time, the poisoning condition of the sensor is eliminated to a certain extent, the service life of the sensor is prolonged, and the replacement cycle of the sensor is prolonged;

2. by means of the arrangement of the flow guide groove and the air inlet hole, the cleaning liquid can be guided, the cleaning sleeve can conveniently clean the whole sensor, and the poisoning condition of the sensor is further eliminated;

3. through the setting of packing ring and clamping ring, can improve the leakproofness of detector, prevent that outside dust or humid air from getting into inside the detector shell after, cause the condition emergence of corruption or pollution to internal circuit.

Drawings

FIG. 1 is an axial view of a combustible gas detector embodying the overall structure of the present invention;

fig. 2 is a first schematic cross-sectional view of an internal structure of a combustible gas detector according to an embodiment of the present application, which mainly shows a fixing manner of a fixing column to a display circuit board;

fig. 3 is a schematic sectional view showing the internal structure of a combustible gas detector according to an embodiment of the present application, which mainly shows the internal structures of the audible and visual alarm assembly and the cleaning sleeve.

Reference numerals: 1. a detector housing; 11. an observation window; 111. a transparent plate; 112. a gasket; 113. pressing a ring; 12. fixing a column; 121. a compression bolt; 13. cleaning the sleeve; 131. a diversion trench; 132. an air intake; 133. a weep hole; 134. a sealing plug; 135. a seal ring; 14. a cleaning box; 15. a pipeline; 151. an on-off valve; 2. a main circuit board; 21. a display circuit board; 3. a sensor; 4. an explosion-proof antenna; 5. an audible and visual alarm component; 51. an acousto-optic housing; 52. an acousto-optic circuit board; 53. a buzzer; 54. a bulb; 55. a light-transmitting cover; 56. a waterproof sound-transmitting member; 6. and fixing the ears.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses combustible gas detector.

Referring to fig. 1 and 2, a combustible gas detector includes detector shell 1, detector shell 1 is the hollow circular cylinder setting, observation window 11 has been seted up on a disc of detector shell 1, it is provided with transparent plate 111 to inlay in the observation window 11, be provided with main circuit board 2 and display circuit board 21 in the observation window 11, it is fixed along the vertical direction towards observation window 11 to be provided with a plurality of fixed columns 12 towards on another disc of detector shell 1, in this embodiment, fixed column 12 is provided with four, display circuit board 21 and four fixing bases are close to the one end butt of observation window 11, and equal threaded connection has clamp bolt 121 on arbitrary fixed column 12, clamp bolt 121 and fixed column 12 can be with display circuit board 21 centre gripping and locking between fixed column 12 and clamp bolt 121, be favorable to improving installation strength, prevent to become flexible and drop.

Referring to fig. 1 and 3, a sensor 3 is arranged on a detector shell 1, a cleaning sleeve 13 is inserted and matched on the outer side of the sensor 3 on the detector shell 1, the cleaning sleeve 13 is in threaded connection with the detector shell 1, a cleaning box 14 for containing a cleaning agent is fixedly arranged on the detector shell 1, a pipeline 15 is arranged between the cleaning box 14 and the cleaning sleeve 13, two ends of the pipeline 15 are respectively communicated with the cleaning box 14 and the cleaning sleeve 13, a switch valve 151 is arranged on the pipeline 15, a spiral diversion trench 131 is formed in the cleaning sleeve 13, an air inlet 132 for balancing air pressure is formed between any two spiral lines, the diversion trench 131 can conduct diversion on the cleaning solution, so that the cleaning solution can be conveniently guided to fill the whole cleaning sleeve 13, the whole sensor 3 is cleaned, poisoning of the sensor 3 can be eliminated to a certain extent, the service life of the sensor 3 is prolonged, meanwhile, the replacement cycle of the sensor 3 is prolonged, the cleaning sleeve 13 can be taken down after cleaning is completed, the residual cleaning solution on the sensor 3 can be gradually evaporated, and the sensing performance of the sensor 3 can not be influenced; furthermore, the bottom of the cleaning sleeve 13 is provided with a liquid leakage hole 133, a sealing plug 134 is inserted into the liquid leakage hole 133, a sealing ring 135 is arranged outside the sealing plug 134, the arrangement of the sealing plug 134 and the sealing ring 135 can prolong the time of the cleaning liquid in the cleaning sleeve 13, and the cleaning effect is further improved.

Referring to fig. 1 and 3, the explosion-proof antenna 4 is arranged on the detector shell 1, so that external wires of the gas detector can be reduced, and meanwhile, the situation that dust and flammable gas are detonated by communication signals is prevented, the safety of a working space is improved, and the personal safety is also ensured; still be provided with audible and visual alarm subassembly 5 on the detector shell 1, audible and visual alarm subassembly 5 includes the reputation casing 51 with detector shell 1 intercommunication, be provided with the reputation circuit board 52 of being connected with main circuit board 2 electricity in the reputation casing 51, it has bee calling organ 53 and bulb 54 to go up the electricity connection on reputation circuit board 52, the both sides of reputation casing 51 are provided with printing opacity cover 55 and waterproof sound-transmitting piece 56 respectively, bulb 54 is installed in printing opacity cover 55, bee calling organ 53 installs the one side that is close to waterproof sound-transmitting piece 56 in reputation casing 51, be favorable to in time giving out an alarm when detecting the unusual increase of combustible gas concentration, remind the staff in time to evacuate and flee, the security of staff's work in the hazardous environment has been improved.

Referring to fig. 1 and 2, a gasket 112 is arranged between the transparent plate 111 and the observation window 11, a pressing ring 113 is arranged on one side of the transparent plate 111 close to the main circuit board 2, and the pressing ring 113 forms an interference fit with the side wall of the observation window 11, and can be matched with the gasket 112 to press the transparent plate 111 in the observation window 11, so that the sealing performance of the detector at the position of the observation window 11 is improved, and the occurrence of the condition that external dust or humid air corrodes the internal circuits and elements of the detector is prevented. The detector shell 1 is also provided with a fixing lug 6, so that the detector can be fixed on different planes, and the multi-working-condition applicability of the detector is improved.

The implementation principle of a combustible gas detector in the embodiment of the application is as follows: when sensor 3 needs to be cleaned, cleaning sleeve 13 is screwed outside sensor 3, switch valve 151 is opened, the cleaning solution can flow into cleaning sleeve 13 along pipeline 15, the whole cleaning sleeve 13 is filled under the guide of diversion trench 131, after the cleaning is completed, sealing plug 134 is pulled out, the cleaning solution flows out, cleaning sleeve 13 is screwed down, the residual cleaning solution attached to sensor 3 is naturally dried, and the cleaning of sensor 3 is completed.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A combustible gas detector, characterized by: including detector shell (1), be provided with sensor (3) on detector shell (1), be provided with main circuit board (2) and display circuit board (21) in detector shell (1), detector shell (1) is located sensor (3) one side and is provided with clean sleeve (13), clean sleeve (13) and sensor (3) form the grafting cooperation and form threaded connection with detector shell (1), still set firmly clean box (14) of splendid attire sanitizer on detector shell (1), be provided with pipeline (15) between clean box (14) and clean sleeve (13), the both ends of pipeline (15) communicate with clean box (14) and clean sleeve (13) respectively, still be provided with ooff valve (151) on pipeline (15), just weeping hole (133) have been seted up to clean sleeve (13) bottom.

2. A combustible gas detector according to claim 1 wherein: the internal diameter of clean sleeve (13) is greater than the external diameter of sensor (3), just seted up spiral helicine guiding gutter (131) on clean sleeve (13) inner wall, all seted up inlet port (132) that are convenient for gas to get into between two arbitrary helices.

3. A combustible gas sensor according to claim 1 wherein: the liquid leakage hole (133) is provided with a sealing plug (134) in an inserted mode, a sealing ring (135) is arranged between the sealing plug (134) and the wall of the liquid leakage hole (133), and the sealing ring (135) is in butt fit with the sealing plug (134) and the wall of the liquid leakage hole (133).

4. A combustible gas detector according to claim 1 wherein: the explosion-proof antenna (4) is arranged on the detector shell (1).

5. A combustible gas sensor according to claim 1 wherein: the detector is characterized in that an observation window (11) is formed in the detector shell (1), a plurality of fixing columns (12) are fixedly arranged on the bottom wall in the detector shell (1) along the direction perpendicular to the observation window (11), one side, far away from the bottom wall of the detector shell (1), of each display circuit board (21) and the corresponding fixing column (12) is abutted, one end, far away from the bottom wall of the detector shell (1), of each fixing column (12) is connected with a compression bolt (121) through threads, and the nut end of each compression bolt (121) is abutted to the display circuit board (21).

6. A combustible gas sensor according to claim 5 wherein: inlay in observation window (11) and establish and be provided with transparent plate (111), be provided with packing ring (112) between transparent plate (111) and observation window (11), one side that transparent plate (111) are close to main circuit board (2) is provided with clamping ring (113), clamping ring (113) and observation window (11) lateral wall form interference fit.

7. A combustible gas detector according to claim 1 wherein: be provided with audible and visual alarm subassembly (5) on detector shell (1), audible and visual alarm subassembly (5) include with sound and light casing (51) of detector shell (1) intercommunication, still including setting up in sound and light casing (51) and with sound and light circuit board (52) electricity be connected, bee calling organ (53) and bulb (54) are connected with sound and light circuit board (52) electricity, just audible and visual alarm subassembly (5) are still including installing printing opacity cover (55) and waterproof sound-transmitting piece (56) in sound and light casing (51) both sides, bulb (54) are installed in printing opacity cover (55), bee calling organ (53) are installed and are close to one side of waterproof sound-transmitting piece (56) in sound and light casing (51).

8. A combustible gas sensor according to claim 1 wherein: the detector shell (1) is provided with a fixing lug (6) for fixing the detector shell on a wall or other planes.