CN218917341U - Point type combustible gas detector - Google Patents
Point type combustible gas detector Download PDFInfo
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- CN218917341U CN218917341U CN202223034917.2U CN202223034917U CN218917341U CN 218917341 U CN218917341 U CN 218917341U CN 202223034917 U CN202223034917 U CN 202223034917U CN 218917341 U CN218917341 U CN 218917341U
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Abstract
The utility model discloses a point-type combustible gas detector which comprises an explosion-proof shell, wherein the explosion-proof shell comprises a rear shell and a front cover, a circuit board is arranged in the rear shell, a central processing unit, a display screen, a fault indicator lamp, a normal indicator lamp and an alarm indicator lamp are arranged on the circuit board, the display screen, the fault indicator lamp, the normal indicator lamp and the alarm indicator lamp are all electrically connected with the central processing unit, a sensor shell is connected with the lower end of the rear shell through threads, a sensor is arranged in the sensor shell, a second sealing ring is arranged at the joint of the sensor shell and the rear shell, and the sensor is electrically connected with the central processing unit. The purpose is to provide a point type combustible gas detector with good sealing performance and long service life.
Description
Technical Field
The utility model relates to the technical field of gas detectors, in particular to a point type combustible gas detector.
Background
The combustible gas detector is generally applied to the complex environments where the combustible gas is wet and possibly present, such as petroleum extraction industry, chemical plants or enclosed spaces. In order to ensure that the instrument can work normally to protect the life safety of staff, a high requirement is put forward on the sealing performance of the instrument. The tightness of the flammable gas detector used in the prior art is poor, and the service life of the detector is easy to be reduced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a point type combustible gas detector with good sealing performance and long service life.
The utility model relates to a point type combustible gas detector, which comprises an explosion-proof shell, wherein the explosion-proof shell comprises a rear shell and a front cover, the rear shell and the front cover are respectively a hollow structure with an open front end and a hollow structure with an open rear end, the front end of the rear shell is connected in the open rear end of the front cover in a threaded manner, a first sealing ring is arranged at the joint of the rear shell and the front cover,
a circular observation hole is formed in the front side wall of the front cover, explosion-proof glass for sealing the circular observation hole is arranged in the front cover, a pressing ring for pressing the explosion-proof glass is arranged in the front cover, the pressing ring is positioned at the rear side of the explosion-proof glass, an annular plate-shaped sealing gasket is arranged between the explosion-proof glass and the front side wall of the front cover,
the left side and the right side of the rear shell are respectively provided with an outward extending fixing piece, the two fixing pieces are respectively provided with a first through hole, the explosion-proof shell is arranged at a specific position of an operation site through the two first through holes, the upper end of the left side wall of the rear shell is sequentially provided with a second through hole and a third through hole along the left-right direction, the second through hole is communicated with the third through hole and is coaxially arranged, the diameter of the second through hole is larger than that of the third through hole, the joint of the second through hole and the third through hole forms a stepped first positioning part, the second through hole is internally connected with an inlet bolt with hollow inside and two ends open, a cylindrical first oil-resistant rubber ring is arranged in the second through hole between the inlet bolt and the first positioning part, the novel oil-resistant rubber ring comprises a rear shell, a left end face, an outer ring face and a right end face of the first oil-resistant rubber ring are respectively abutted to an inlet bolt, an inner hole wall of a second through hole and a first positioning portion, an inner cavity of the inlet bolt is communicated with a third through hole through the inner cavity of the first oil-resistant rubber ring, a circuit board is arranged in the rear shell, a central processing unit, a display screen, a fault indicator lamp, a normal indicator lamp and an alarm indicator lamp are arranged on the circuit board, the display screen, the fault indicator lamp, the normal indicator lamp and the alarm indicator lamp are electrically connected with the central processing unit, a sensor shell is connected with the lower end of the rear shell through threads, a sensor is arranged in the sensor shell, and a second sealing ring is arranged at the joint of the sensor shell and the rear shell, and the sensor is electrically connected with the central processing unit.
The utility model relates to a point-type combustible gas detector, wherein a fourth through hole and a fifth through hole are sequentially formed in the upper end of the right side wall of a rear shell along the left-right direction, the fourth through hole is communicated with the fifth through hole and is coaxially arranged, the diameter of the fourth through hole is smaller than that of the fifth through hole, a stepped second positioning part is formed at the joint of the fourth through hole and the fifth through hole, a first bolt is connected in the fifth through hole in a threaded manner, a cylindrical second oil-resistant rubber ring is arranged in the fifth through hole between the first bolt and the second positioning part, and the left end face, the outer ring face and the right end face of the second oil-resistant rubber ring are respectively abutted against the second positioning part, the inner hole wall of the fifth through hole and the first bolt.
The utility model discloses a point type combustible gas detector, which further comprises a wire, an internal grounding screw, a grounding wire and an external grounding screw, wherein the wire and the internal grounding screw are both positioned in a rear shell, the rear shell and a front cover are both made of metal, a first threaded blind hole matched with the internal grounding screw is formed in the inner wall of the rear shell, one end of the wire is electrically connected with the inner wall of the rear shell through the internal grounding screw and the first threaded blind hole, the other end of the wire is electrically connected with a circuit board, a second threaded blind hole matched with the external grounding screw is formed in the outer wall of the rear shell, and the grounding wire is electrically connected with the outer wall of the rear shell through the external grounding screw and the second threaded blind hole.
The utility model relates to a point type combustible gas detector, wherein a top thread hole is formed in the joint of a front cover and a rear shell, a top thread is connected in the top thread hole in a threaded manner, and the end part of the top thread is abutted against the rear shell.
The utility model relates to a point type combustible gas detector, wherein an annular plate-shaped rubber pad and an annular plate-shaped asbestos pad are arranged between a pressing ring and explosion-proof glass, and the asbestos pad is positioned at the rear side of the rubber pad.
According to the point-type combustible gas detector, the annular plate-shaped flat gasket is sleeved on the data cable between the wire inlet bolt and the first oil-resistant rubber ring, and the left end face of the first oil-resistant rubber ring is abutted against the wire inlet bolt through the flat gasket.
The utility model relates to a point type combustible gas detector, which also comprises a remote controller and a remote control information receiving device arranged on a circuit board, wherein the remote control information receiving device is in signal connection with the remote controller and is electrically connected with a central processing unit.
The utility model discloses a point-type combustible gas detector, which further comprises a mounting device, wherein the mounting device comprises a mounting bracket, a U-shaped rod, two first nuts, two second bolts and two second nuts, the mounting bracket comprises a first vertical plate, a transverse plate and a second vertical plate, two ends of the transverse plate are respectively and vertically fixedly connected with the top of the first vertical plate and the top of the second vertical plate, two sixth through holes which are arranged at intervals are formed in the lower end of the first vertical plate, the two sixth through holes are arranged in one-to-one correspondence with the two first through holes, the screw ends of the second bolts sequentially penetrate through the first through holes and the corresponding sixth through holes and are in threaded connection with the first nuts, two seventh through holes which are arranged at intervals are formed in the two ends of the second vertical plate, an eighth through hole is formed in the transverse plate, the U-shaped rod is clamped on a vertical column of a working site, and the end of the U-shaped rod penetrates through the seventh through holes and is in threaded connection with the second nuts.
The utility model discloses a point-type combustible gas detector, which further comprises a mounting device, wherein the mounting device comprises a mounting bracket, two first nuts, two second bolts and two second nuts, the mounting bracket comprises a first vertical plate, a transverse plate and a second vertical plate, two ends of the transverse plate are respectively and vertically fixedly connected with the top of the first vertical plate and the top of the second vertical plate, two sixth through holes which are arranged at intervals are formed in the lower end of the first vertical plate, the two sixth through holes are arranged in one-to-one correspondence with the two first through holes, the screw ends of the second bolts sequentially penetrate through the first through holes and the corresponding sixth through holes and are in threaded connection with the first nuts, two seventh through holes which are arranged at intervals are formed in the two ends of the second vertical plate, an eighth through hole is formed in the transverse plate, two fixing screw rods on an operation site are respectively and spirally connected to the fixing screw rods above and below the transverse plate, and the two second nuts are abutted against the plate.
The point-type combustible gas detector is different from the prior art in that when the point-type combustible gas detector is actually used, one end of a data cable of an operation site sequentially passes through the inner cavity of the wire inlet bolt, the inner cavity of the first oil-resistant rubber ring and the inner cavity of the third through hole and is electrically connected with the circuit board, the data cable provides a power supply and a data transmission channel for the circuit board, the inner ring surface of the first oil-resistant rubber ring is abutted against the data cable, the first oil-resistant rubber ring seals a gap between the data cable and the second through hole, the rear shell seals a gap between the front cover and the rear shell by the first sealing ring, the second sealing ring seals a gap between the sensor shell and the front side wall of the front cover by the annular plate-shaped sealing gasket, so that the tightness of the point-type combustible gas detector can be effectively improved, and the service life of the point-type combustible gas detector is prolonged.
The utility model is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a front cross-sectional view of a point-type flammable gas detector of the present utility model (hidden ground wire, external ground screw, remote control and mounting means);
FIG. 2 is a left side cross-sectional view of the spot combustible gas detector of the utility model (hidden jackscrew, remote control and mounting means);
FIG. 3 is a top view of the spot flammable gas detector of the present utility model (hidden jackscrews, ground wires, incoming bolts, first bolts, remote control and mounting means);
FIG. 4 is a left side view of the spot flammable gas detector of the present utility model (hidden jackscrews, ground wires, external screws, remote control and mounting means);
FIG. 5 is a schematic view of the structure of the spot type flammable gas detector of the present utility model (hidden ground wire, external screw, remote control and mounting device);
FIG. 6 is a schematic view of a first installation of the spot-type flammable gas detector of the present utility model (hidden jackscrews, jackscrew holes, ground wires, external screws and remote control);
FIG. 7 is a schematic view of a second mounting method (hidden jackscrew, jackscrew hole, ground wire, external screw and remote control) of the spot type flammable gas detector of the present utility model;
fig. 8 is a schematic structural view of a mounting bracket in the spot type combustible gas detector of the utility model.
Detailed Description
As shown in fig. 1 and 2, the point type combustible gas detector of the utility model comprises an explosion-proof shell, the explosion-proof shell comprises a rear shell 11 and a front cover 21, the rear shell 11 and the front cover 21 are respectively of a hollow structure with an open front end and a hollow structure with an open rear end, the front end of the rear shell 11 is in threaded connection with the rear end opening of the front cover 21, and a first sealing ring 14 is arranged at the joint of the rear shell 11 and the front cover 21.
The front side wall of the front cover 21 is provided with a circular observation hole 18, explosion-proof glass 19 for sealing the circular observation hole 18 is arranged in the front cover 21, a compression ring 22 for compressing the explosion-proof glass 19 is arranged in the front cover 21, the compression ring 22 is positioned at the rear side of the explosion-proof glass 19, and an annular plate-shaped sealing gasket 20 is arranged between the explosion-proof glass 19 and the front side wall of the front cover 21.
As shown in fig. 5, the left and right sides of the rear shell 11 are provided with fixing plates 25 extending outwards, the two fixing plates 25 are provided with first through holes 27, the explosion-proof shell is installed at a specific position of the operation site through the two first through holes 27, as shown in fig. 1, 2 and 6, the upper end of the left side wall of the rear shell 11 is provided with a second through hole and a third through hole 6 in turn along the left and right direction, the second through hole is communicated with the third through hole 6 and coaxially arranged, the diameter of the second through hole is larger than that of the third through hole 6, the junction of the second through hole and the third through hole forms a step-shaped first positioning part 5, the second through hole is internally connected with a wire inlet bolt 2 with hollow inside and opened at two ends, a cylindrical first oil-proof rubber ring 4 is arranged in the second through hole between the wire inlet bolt 2 and the first positioning part 5, the left end face, the outer ring face and the right end face of the first oil-resistant rubber ring 4 are respectively abutted to the inlet wire bolt 2, the inner hole wall of the second through hole and the first positioning part 5, the inner cavity of the inlet wire bolt 2 is communicated with the third through hole 6 through the inner cavity of the first oil-resistant rubber ring 4, a circuit board 13 is arranged in the rear shell 11, a central processing unit, a display screen, a fault indicator lamp, a normal indicator lamp and an alarm indicator lamp are arranged on the circuit board 13, the display screen, the fault indicator lamp, the normal indicator lamp and the alarm indicator lamp are electrically connected with the central processing unit, the lower end of the rear shell 11 is in threaded connection with a sensor shell 12, a sensor 24 is arranged in the sensor shell 12, a second sealing ring 23 is arranged at the joint of the sensor shell 12 and the rear shell 11, and the sensor 24 is electrically connected with the central processing unit.
As shown in fig. 1, the upper end of the right side wall of the rear shell 11 is sequentially provided with a fourth through hole 7 and a fifth through hole along the left-right direction, the fourth through hole 7 is communicated with the fifth through hole and is coaxially arranged, the diameter of the fourth through hole 7 is smaller than that of the fifth through hole, a step-shaped second positioning part 8 is formed at the joint of the fourth through hole 7 and the fifth through hole, a first bolt 10 is connected with the fifth through hole in an internal thread manner, a cylindrical second oil-resistant rubber ring 9 is arranged in the fifth through hole between the first bolt 10 and the second positioning part 8, and the left end face, the outer ring face and the right end face of the second oil-resistant rubber ring 9 are respectively abutted against the second positioning part 8, the inner hole wall of the fifth through hole and the first bolt 10. When the utility model is in actual use, the first bolt 10 can be screwed out from the fifth through hole, the audible and visual alarm is arranged at the fifth through hole (the audible and visual alarm is in the prior art, the structure and the working principle of the audible and visual alarm are not repeated), and the audible and visual alarm is electrically connected with the central processing unit, so that when the combustible gas leaks in the working field, the audible and visual alarm sends out an alarm signal to prompt an operator to conduct treatment in time, thereby ensuring the personal safety of the operator.
As shown in fig. 4 and 5, in order to protect the circuit board 13 inside the explosion-proof housing from short circuit damage, the utility model further comprises a wire, an internal grounding screw, a grounding wire and an external grounding screw, wherein the wire and the internal grounding screw are both positioned in the rear housing 11, the rear housing 11 and the front cover 21 are both made of metal, a first threaded blind hole 26 matched with the internal grounding screw is formed in the inner wall of the rear housing 11, one end of the wire is electrically connected with the inner wall of the rear housing 11 through the internal grounding screw and the first threaded blind hole 26, the other end of the wire is electrically connected with the circuit board 13, a second threaded blind hole 1 matched with the external grounding screw is formed in the outer wall of the rear housing 11, and the grounding wire is electrically connected with the outer wall of the rear housing 11 through the external grounding screw and the second threaded blind hole 1.
As shown in fig. 2 and 3, in order to prevent a non-professional from removing the front cover 21 and the rear case 11 by hand, a top thread hole 15 is formed at the connection part between the front cover 21 and the rear case 11, a top thread is connected to the top thread hole 15 by internal threads, and the end part of the top thread is abutted against the rear case 11.
As shown in fig. 2, in order to protect the glass explosion-proof 19 and to increase the tightness of the utility model, an annular plate-shaped rubber pad 17 and an annular plate-shaped asbestos pad 16 are arranged between the pressure ring 22 and the glass explosion-proof 19, the asbestos pad 16 being located on the rear side of the rubber pad 17.
As shown in fig. 1, in order to reduce friction between the incoming bolt 2 and the first oil-resistant rubber ring 4, an annular plate-shaped flat gasket 3 is sleeved on a data cable 31 between the incoming bolt 2 and the first oil-resistant rubber ring 4, and the left end surface of the first oil-resistant rubber ring 4 is abutted against the incoming bolt 2 through the flat gasket 3.
In order to facilitate the adjustment of the parameters of the present utility model and also facilitate the use of the present utility model, the present utility model further comprises a remote controller and a remote control information receiving device disposed on the circuit board 13, wherein the remote control information receiving device is in signal connection with the remote controller and is electrically connected with the central processing unit.
The utility model has two mounting modes, which are respectively as follows:
as shown in fig. 6 and 8, the first mounting method of the present utility model: the utility model also comprises a mounting device, the mounting device comprises a mounting bracket, a U-shaped rod 33, two first nuts 29, two second bolts 30 and two second nuts 32, the mounting bracket comprises a first vertical plate 36, a horizontal plate 35 and a second vertical plate 34, two ends of the horizontal plate 35 are respectively and vertically fixedly connected with the top of the first vertical plate 36 and the top of the second vertical plate 34, two sixth through holes 40 which are arranged at intervals are arranged at the lower end of the first vertical plate 36, the two sixth through holes 40 are arranged in one-to-one correspondence with the two first through holes 27, the screw end of the second bolt 30 sequentially passes through the first through holes 27 and the corresponding sixth through holes 40 and then is in threaded connection with the first nuts 29, two seventh through holes 38 which are arranged at intervals are arranged at the two ends of the second vertical plate 34, an eighth through hole 39 is formed in the horizontal plate 35, the U-shaped rod 33 is clamped on the vertical post 28 on an operation site, one end of the U-shaped rod 33 passes through the seventh through hole 38 and then is in threaded connection with the second nuts 32 (namely, one end of the U-shaped rod 33 passes through the seventh through hole 38 and then is in threaded connection with the other end of the second through hole 32 and then passes through the seventh through hole 38 and then is in threaded connection with the other end of the second through hole 32).
As shown in fig. 7 and 8, the second mounting method of the present utility model: the utility model further comprises a mounting device, the mounting device comprises a mounting bracket, two first nuts 29, two second bolts 30 and two second nuts 32, the mounting bracket comprises a first vertical plate 36, a transverse plate 35 and a second vertical plate 34, two ends of the transverse plate 35 are respectively and vertically fixedly connected with the top of the first vertical plate 36 and the top of the second vertical plate 34, two sixth through holes 40 which are arranged at intervals are arranged at the lower end of the first vertical plate 36, the two sixth through holes 40 are arranged in one-to-one correspondence with the two first through holes 27, the screw ends of the second bolts 30 sequentially pass through the first through holes 27 and the corresponding sixth through holes 40 and are in threaded connection with the first nuts 29, two seventh through holes 38 which are arranged at intervals are arranged at the two ends of the second vertical plate 34, an eighth through hole 39 is formed in the transverse plate 35, the fixed screw 37 on the working site penetrates through the eighth through hole 39, the two second nuts 32 are respectively and are in threaded connection with the fixed screw 37 above and below the transverse plate 35, and the two second nuts 32 are abutted against the transverse plate 35.
As shown in fig. 1 and 2, in actual use, one end of a data cable 31 of an operation site sequentially passes through the inner cavity of the wire inlet bolt 2, the central hole of the flat gasket 3, the inner cavity of the first oil-resistant rubber ring 4 and the inner cavity of the third through hole 6 and then is electrically connected with the circuit board 13, the data cable 31 provides a power supply and a data transmission channel for the circuit board 13, the inner ring surface of the first oil-resistant rubber ring 4 abuts against the data cable 31, the first oil-resistant rubber ring 4 seals a gap between the data cable 31 and the second through hole, the rear shell 11 and the front cover 21, the first sealing ring 14 seals a gap between the sensor shell 12 and the rear shell 11, the second sealing ring 23 seals a gap between the explosion-proof glass 19 and the front side wall of the front cover 21, and thus the sealing performance of the utility model can be effectively improved, and the service life of the utility model is prolonged.
The working principle of the utility model is described below:
when the detector is electrified to start working, if the sensor 24 fails, the central processing unit does not receive the concentration signal transmitted by the sensor 24, and then the central processing unit respectively controls the fault indicator to be lightened and controls the display screen to display corresponding fault information after analysis and judgment,
when the sensor 24 fails and the concentration value of the combustible gas detected by the sensor 24 is smaller than the alarm value, the sensor 24 transmits the detected concentration signal to the central processing unit, the central processing unit processes and analyzes the received concentration signal and then respectively controls the normal indicator lamp to be on and controls the display screen to display the concentration value of the combustible gas,
when the audible and visual alarm is installed on the detector, the sensor 24 does not fail, and the concentration value of the combustible gas detected by the sensor 24 is not smaller than the alarm value, the sensor 24 transmits the detected concentration signal to the central processing unit, and the central processing unit processes and analyzes the received concentration signal and then respectively controls the alarm indicator to light up, and the display screen displays the concentration value of the combustible gas and the audible and visual alarm to alarm.
It should be noted that the circuit board 13 may employ a MCU (Microcontroller Unit) system board, a SoC (system on a chip) system board, or a PLC (Programmable Logic Controller) minimum system including I/O.
It should be noted that, the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (9)
1. A point type combustible gas detector, characterized in that: comprises an explosion-proof shell, wherein the explosion-proof shell comprises a rear shell and a front cover, the rear shell and the front cover are respectively a hollow structure with an open front end and a hollow structure with an open rear end, the front end of the rear shell is connected in the open rear end of the front cover in a threaded manner, a first sealing ring is arranged at the joint of the rear shell and the front cover,
a circular observation hole is formed in the front side wall of the front cover, explosion-proof glass for sealing the circular observation hole is arranged in the front cover, a pressing ring for pressing the explosion-proof glass is arranged in the front cover, the pressing ring is positioned at the rear side of the explosion-proof glass, an annular plate-shaped sealing gasket is arranged between the explosion-proof glass and the front side wall of the front cover,
the left side and the right side of the rear shell are respectively provided with an outward extending fixing piece, the two fixing pieces are respectively provided with a first through hole, the explosion-proof shell is arranged at a specific position of an operation site through the two first through holes, the upper end of the left side wall of the rear shell is sequentially provided with a second through hole and a third through hole along the left-right direction, the second through hole is communicated with the third through hole and is coaxially arranged, the diameter of the second through hole is larger than that of the third through hole, the joint of the second through hole and the third through hole forms a stepped first positioning part, the second through hole is internally connected with an inlet bolt with hollow inside and two ends open, a cylindrical first oil-resistant rubber ring is arranged in the second through hole between the inlet bolt and the first positioning part, the novel oil-resistant rubber ring comprises a rear shell, a left end face, an outer ring face and a right end face of the first oil-resistant rubber ring are respectively abutted to an inlet bolt, an inner hole wall of a second through hole and a first positioning portion, an inner cavity of the inlet bolt is communicated with a third through hole through the inner cavity of the first oil-resistant rubber ring, a circuit board is arranged in the rear shell, a central processing unit, a display screen, a fault indicator lamp, a normal indicator lamp and an alarm indicator lamp are arranged on the circuit board, the display screen, the fault indicator lamp, the normal indicator lamp and the alarm indicator lamp are electrically connected with the central processing unit, a sensor shell is connected with the lower end of the rear shell through threads, a sensor is arranged in the sensor shell, and a second sealing ring is arranged at the joint of the sensor shell and the rear shell, and the sensor is electrically connected with the central processing unit.
2. The spot flammable gas detector of claim 1, wherein: the upper end of the right side wall of the rear shell is sequentially provided with a fourth through hole and a fifth through hole along the left-right direction, the fourth through hole is communicated with the fifth through hole and is coaxially arranged, the diameter of the fourth through hole is smaller than that of the fifth through hole, a step-shaped second positioning part is formed at the joint of the fourth through hole and the fifth through hole, a first bolt is connected with the fifth through hole in an internal thread manner, a cylindrical second oil-resistant rubber ring is arranged in the fifth through hole between the first bolt and the second positioning part, and the left end face, the outer ring face and the right end face of the second oil-resistant rubber ring are respectively abutted against the second positioning part, the inner hole wall of the fifth through hole and the first bolt.
3. The spot flammable gas detector of claim 2, wherein: still include wire, internal grounding screw, earth connection and external grounding screw, wire and internal grounding screw all are located the backshell, backshell and protecgulum are made by the metal, the first screw thread blind hole with internal grounding screw assorted is seted up to the inner wall of backshell, the one end of wire is through internal grounding screw and first screw thread blind hole and the inner wall electric connection of backshell, the other one end and the circuit board electric connection of wire, the second screw thread blind hole with external grounding screw assorted is seted up to the outer wall of backshell, the earth connection passes through external grounding screw and second screw thread blind hole and the outer wall electric connection of backshell.
4. A spot combustible gas detector according to claim 3 wherein: the front cover is provided with a top thread hole at the joint with the rear shell, the top thread hole is internally connected with a top thread in a threaded manner, and the end part of the top thread is abutted against the rear shell.
5. The spot-type combustible gas detector of claim 4 wherein: an annular plate-shaped rubber pad and an annular plate-shaped asbestos pad are arranged between the pressing ring and the explosion-proof glass, and the asbestos pad is located at the rear side of the rubber pad.
6. The spot flammable gas detector of claim 5, wherein: the data cable between the wire inlet bolt and the first oil-resistant rubber ring is sleeved with an annular plate-shaped flat gasket, and the left end face of the first oil-resistant rubber ring is abutted against the wire inlet bolt through the flat gasket.
7. The spot flammable gas detector of claim 6, wherein: the remote control information receiving device is connected with the remote controller through signals and is electrically connected with the central processing unit.
8. The spot flammable gas detector of claim 7, wherein: the installation device comprises an installation support, a U-shaped rod, two first nuts, two second bolts and two second nuts, wherein the installation support comprises a first vertical plate, a transverse plate and a second vertical plate, two ends of the transverse plate are respectively and vertically fixedly connected with the top of the first vertical plate and the top of the second vertical plate, two sixth through holes which are arranged at intervals are formed in the lower end of the first vertical plate, the two sixth through holes are arranged in one-to-one correspondence with the two first through holes, screw ends of the second bolts sequentially penetrate through the first through holes and the corresponding sixth through holes and are in threaded connection with the first nuts, seventh through holes which are arranged at intervals are formed in two ends of the second vertical plate, eighth through holes are formed in the transverse plate, the U-shaped rod is clamped on an upright post of an operation site, and the end of the U-shaped rod penetrates through the seventh through holes and is in threaded connection with the second nuts.
9. The spot flammable gas detector of claim 7, wherein: the mounting device comprises a mounting bracket, two first nuts, two second bolts and two second nuts, the mounting bracket comprises a first vertical plate, a transverse plate and a second vertical plate, two ends of the transverse plate are respectively and vertically fixedly connected with the top of the first vertical plate and the top of the second vertical plate, two sixth through holes which are arranged at intervals are formed in the lower end of the first vertical plate, the two sixth through holes are arranged in one-to-one correspondence with the two first through holes, the screw ends of the second bolts sequentially penetrate through the first through holes and the corresponding sixth through holes and are in threaded connection with the first nuts, two seventh through holes which are arranged at intervals are formed in the two ends of the second vertical plate, an eighth through hole is formed in the transverse plate, a fixing screw rod on an operation site penetrates through the eighth through hole, the two second nuts are respectively and spirally connected onto the fixing screw rods above and below the transverse plate, and the two second nuts are abutted against the transverse plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223034917.2U CN218917341U (en) | 2022-11-15 | 2022-11-15 | Point type combustible gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223034917.2U CN218917341U (en) | 2022-11-15 | 2022-11-15 | Point type combustible gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218917341U true CN218917341U (en) | 2023-04-25 |
Family
ID=86041064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223034917.2U Active CN218917341U (en) | 2022-11-15 | 2022-11-15 | Point type combustible gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218917341U (en) |
-
2022
- 2022-11-15 CN CN202223034917.2U patent/CN218917341U/en active Active
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