CN219758243U - Explosion-proof combustible gas detection sensor - Google Patents
Explosion-proof combustible gas detection sensor Download PDFInfo
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- CN219758243U CN219758243U CN202320840503.4U CN202320840503U CN219758243U CN 219758243 U CN219758243 U CN 219758243U CN 202320840503 U CN202320840503 U CN 202320840503U CN 219758243 U CN219758243 U CN 219758243U
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- 238000001514 detection method Methods 0.000 title claims abstract description 76
- 239000000523 sample Substances 0.000 claims abstract description 136
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 30
- 230000014509 gene expression Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The utility model belongs to the field of sensors, and particularly relates to an explosion-proof combustible gas detection sensor which comprises a main body shell, a cover body and a lead tube; the bottom of the main body shell is provided with a combustible gas detection tube; the inner side of the combustible gas detection tube is provided with a sensing probe and a sensing probe socket, the sensing probe and the sensing probe socket are connected through a plug-in type to form electric connection, the combustible gas detection tube comprises a probe base and a probe jacket, the probe base is provided with a socket mounting groove and a wire perforation located at the bottom of the socket mounting groove, the sensing probe socket is fixed in the socket mounting groove, the wire perforation penetrates out of a transmission wire, and the wire perforation is sealed through epoxy resin and fixes the transmission wire. According to the utility model, through the epoxy resin sealing wire perforation and the arrangement of the first sealing ring between the probe base and the main body shell, combustible gas can be prevented from penetrating into the inner cavity of the main body with the circuit from the detection tube, and the explosion-proof effect is improved.
Description
Technical Field
The utility model belongs to the field of sensors, and particularly relates to an explosion-proof combustible gas detection sensor.
Background
The combustible gas detection sensor is a detector responsive to a single or multiple combustible gas concentrations, and generally includes a main body housing 100, and a cover 200 fixed to the front surface of the main body housing 100, as shown in fig. 1 and 2; a visual window 210 is arranged on the inner side of the cover body 200; a transparent plate 220 is fixed on the inner side of the visual window 210 in a sealing manner; the two sides of the upper part of the main body housing 100 are provided with lead pipes 300; the bottom of the main body casing 100 is provided with a combustible gas detection tube 400; the combustible gas detection tube 400 is provided with a combustible gas detection assembly 500 at the inner side, and in particular, the combustible gas detection assembly has two types of catalytic type and infrared optical type. Patent CN201420647828.1 discloses a combustible gas alarm detector of convenient change detection head, including the detector main part and locate the detection head in the detector main part, the detection head including the sensing probe and the sensing probe socket of components of a whole that can function independently setting, be equipped with independent EEPROM in the sensing probe socket, the sensing probe socket is fixed in the through-hole of a detection head fixing base, the sensing probe holds in this through-hole and realizes plug-in cooperation with the sensing probe socket, detection head fixing base end fixing has fixed cover to sticis the sensing probe and inserts on the sensing probe socket, can be at the detection head of on-the-spot quick replacement detector, the detection head after the change can normal detection use immediately. The combustible gas detector has a certain danger, the combustible gas can enter the inner cavity of the detector main body from the detection port, the detector main body is provided with a circuit board and a display screen, and when the circuit part is spark or overheated, the combustible gas can be ignited.
Disclosure of Invention
The utility model aims to overcome the defects and the shortcomings of the prior art and provides an explosion-proof combustible gas detection sensor.
The technical scheme adopted by the utility model is as follows: an explosion-proof combustible gas detection sensor comprises a main body shell and a cover body fixed on the front surface of the main body shell; the inner side of the cover body is provided with a visual window; the two sides of the upper part of the main body shell are provided with lead pipes; the bottom of the main body shell is provided with a combustible gas detection tube; the utility model discloses a combustible gas detection tube, including the combustible gas detection tube, combustible gas detection assembly is installed to the combustible gas detection tube inboard, combustible gas detection assembly is including sensing probe and the sensing probe socket that the components of a whole that can function independently set up, sensing probe and sensing probe socket pass through plug-in connection and form the electricity and connect, combustible gas detection tube includes probe base and probe overcoat, be equipped with the wire perforation of socket mounting groove and being located socket mounting groove bottom on the probe base, the sensing probe socket is fixed in the socket mounting groove, wire perforation is worn out and is had transmission wire and wire perforation to pass through epoxy seal and fixed transmission wire, probe base and main part shell lug connection and both are equipped with first sealing washer, the probe overcoat cover is established outside the sensing probe and is equipped with the inlet port corresponding the sensing probe detection zone.
The detection tube connecting hole is formed in the main body shell, a first inner threaded portion is arranged on the inner wall of the detection tube connecting hole, a first threaded connecting portion extending into the detection tube connecting hole and in threaded connection with the main body shell, a first tool retracting groove located on the inner side of the first threaded connecting portion is formed in the probe base, the first sealing ring is embedded in the first tool retracting groove, a first conical surface sealing fit portion is arranged on the outer side of the inner threaded portion of the detection tube connecting hole, and the first conical surface sealing fit portion is in sealing fit with the first sealing ring.
The outside of the sensing probe socket is in threaded connection and matched fixation with the inner wall of the socket mounting groove.
The probe jacket forms a limit on the sensing probe so that the sensing probe is in plug-in type electric connection with the sensing probe socket.
The probe base is in threaded connection and matched with the probe outer sleeve; the inner periphery of the probe sleeve is provided with an abutting step ring, and the abutting step ring is in abutting fit with one end part of the sensing probe, which is far away from the sensing probe socket.
The probe base periphery is equipped with second external screw thread portion, second clearance groove, the sealed butt portion of second in proper order, the embedded second sealing washer that is equipped with of second clearance groove, probe overcoat inner wall corresponds second external screw thread portion and is equipped with the sealed cooperation portion of second conical surface with it and be equipped with in second internal screw thread portion outer end, the sealed cooperation of second conical surface and second sealing washer formation.
Screw holes are radially formed in the side wall of the probe outer sleeve, and set screws are connected with the screw holes in a threaded mode.
And a third sealing ring is arranged between the abutting step ring and the end part of the sensing probe, which is far away from the sensing probe socket.
The outer end part of the air inlet is blocked by an explosion-proof piece.
The outer end that probe cover kept away from the probe base is equipped with the explosion proof piece mounting groove, the inlet port sets up in explosion proof piece mounting groove bottom, explosion proof piece mounting groove internal thread connection has explosion proof piece clamping ring, the one end that explosion proof piece clamping ring is close to the inlet port is equipped with explosion proof piece spacing groove, the explosion proof piece is located explosion proof piece spacing inslot and the explosion proof piece clamping ring is protruding relatively, explosion proof piece side perisporium and explosion proof piece spacing groove inner wall bonding cooperation, explosion proof piece is explosion proof piece clamping ring bellied terminal surface and explosion proof piece mounting groove bottom bonding cooperation relatively.
The beneficial effects of the utility model are as follows: according to the utility model, through the epoxy resin sealing wire perforation and the arrangement of the first sealing ring between the probe base and the main body shell, combustible gas can be prevented from penetrating into the inner cavity of the main body with the circuit from the detection tube, and the explosion-proof effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a front view of an embodiment of the present utility model;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is a schematic view showing the structure of a portion of a combustible gas detection tube in accordance with an embodiment of the present utility model;
FIG. 4 is an exploded rear cross-sectional view of a portion of a combustible gas detection tube in accordance with an embodiment of the utility model;
in the figure, the body housing-100; a detection tube connecting hole-101; a first conical surface seal mating portion-102; a cover body-200; visual window-210; a lead tube-300; a combustible gas detection tube-400; a probe mount-401; a first threaded connection-4011; a first tool retracting groove-4012; second tool retracting groove-4013; a second seal abutment-4014; a probe outer sleeve-402; abutting the step ring-4021; a second conical surface seal mating portion-4022; set screw-403; rupture disc-404; explosion proof sheet clamping ring-405; a sensing probe-410; a sensing probe receptacle-420; transmission line-430; epoxy-440; a first seal ring-510; a second seal ring-520; and a third sealing ring-530.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.
An explosion-proof combustible gas detection sensor, as shown in fig. 1 and 2, comprises a main body shell 100 and a cover body 200 fixed on the front surface of the main body shell 100; a visual window 210 is arranged on the inner side of the cover body 200; the two sides of the upper part of the main body housing 100 are provided with lead pipes 300; the bottom of the main body casing 100 is provided with a combustible gas detection tube 400; the combustible gas detection tube 400 is internally provided with a combustible gas detection assembly, the combustible gas detection assembly comprises a sensing probe 410 and a sensing probe socket 420 which are arranged in a split mode, the sensing probe 410 and the sensing probe socket 420 are electrically connected through plug-in connection, the combustible gas detection tube 400 comprises a probe base 401 and a probe outer sleeve 402, the probe base 401 is provided with a socket mounting groove and a wire perforation arranged at the bottom of the socket mounting groove, the sensing probe socket 420 is fixed in the socket mounting groove, the wire perforation is penetrated by a transmission wire 430, the wire perforation is sealed by epoxy resin 440 and is used for fixing the transmission wire 430, a first sealing ring 510 is arranged at the joint of the probe base 401 and the main body shell 100, the probe outer sleeve 402 is sleeved outside the sensing probe 410, and an air inlet hole is arranged in a detection area corresponding to the sensing probe 410.
The inner cavity of the main body shell of the detector formed by connecting the main body shell 100 and the cover body 200 is provided with a circuit board, a display screen and the like, signals of the combustible gas detected by the sensing probe 410 in the combustible gas detection tube 400 are transmitted into the inner cavity of the main body shell of the detector through the transmission wire 430, the signals can be displayed through the display screen through signal conversion of circuits on the circuit board, and meanwhile, an alarm circuit can be arranged, and the detection of the combustible signal can be informed in an alarm mode of emitting sound, emitting a remote signal and the like. The problems of overheating, short circuit and the like may occur in the working process of the circuit parts, and the explosion may be caused by the contact of the combustible gas, so that the epoxy resin 440 is injected into the wire perforation part and then solidified, the inner cavity of the combustible gas detection tube 400 and the inner cavity of the detector main body shell can be isolated, the combustible gas is prevented from leaking into the inner cavity of the detector main body shell from the inner cavity of the combustible gas detection tube 400, and meanwhile, the first sealing ring 510 is arranged at the joint of the probe base 401 and the main body shell 100, and the external combustible gas is prevented from entering the inner cavity of the detector main body shell from the joint of the combustible gas detection tube and the detector main body shell.
As shown in fig. 3 and 4, the main body housing 100 is provided with a test tube connection hole 101, a first internal thread portion is provided on an inner wall of the test tube connection hole 101, the probe base 401 is provided with a first threaded connection portion 4011 extending into the test tube connection hole 101 and in threaded connection with the main body housing 100, a first tool withdrawal groove 4012 located inside the first threaded connection portion 4011, the first seal ring 510 is embedded in the first tool withdrawal groove 4012, a first conical surface seal fit portion 102 is provided outside the internal thread portion of the test tube connection hole 101, and the first conical surface seal fit portion 102 is in seal fit with the first seal ring 510.
Further, the outer part of the sensing probe socket 420 is fixedly connected with the inner wall of the socket mounting groove in a threaded manner.
Further, the probe housing 402 forms a limit to the sensing probe 410 such that the sensing probe 410 is maintained in plug-in electrical connection with the sensing probe receptacle 420.
Further, the probe base 401 and the probe outer sleeve 402 are in threaded connection and fit; an abutting step ring 4021 is arranged on the inner periphery of the probe outer sleeve 402, and the abutting step ring 4021 is in abutting fit with one end part of the sensing probe 410, which is far away from the sensing probe socket 420.
Further, as shown in fig. 4, the outer periphery of the probe base 401 is sequentially provided with a second external thread portion, a second tool withdrawal groove 4013 and a second sealing abutting portion 4014, the second tool withdrawal groove 4013 is embedded with a second sealing ring 520, the inner wall of the probe outer sleeve 402 is provided with a second internal thread portion corresponding to the second external thread portion and matched with the second external thread portion, the outer end of the second internal thread portion is provided with a second conical surface sealing matching portion 4022, and the second conical surface sealing matching portion 4022 and the second sealing ring 520 form sealing fit. The provision of the second seal 520 ensures that combustible gas does not enter between the sensing probe 410 and the sensing probe receptacle 420 through the portion of the probe mount 401 that is connected to the probe outer sleeve 402.
Further, a screw hole is radially formed on the side wall of the probe outer sleeve 402, and a set screw 403 is screwed in the screw hole. Set screw 403 ensures that probe mount 401 is tightly coupled to probe housing 402.
Further, a third sealing ring 530 is disposed between the abutment stepped ring 4021 and an end portion of the sensing probe 410 away from the sensing probe socket 420. The provision of the third seal 530 ensures that combustible gas does not enter between the sensing probe 410 and the sensing probe receptacle 420 through the location where the sensing probe 410 is connected to the probe housing 402.
The outer end of the air inlet hole is blocked by the explosion-proof sheet 404. The explosion-proof sheet 404 is specifically a powder sintered sheet, which has many fine passages or pores passing through the gas therein for the passage of the combustible gas, and when a flame is formed in the combustible gas detection tube, the explosion-proof sheet 404 can block the flame from spreading to the outside.
Further, the outer end that probe cover 402 kept away from probe base 401 is equipped with the explosion proof piece mounting groove, the inlet port sets up in explosion proof piece mounting groove bottom, explosion proof piece mounting groove internal thread connection has explosion proof piece clamping ring 405, the one end that explosion proof piece clamping ring 405 is close to the inlet port is equipped with explosion proof piece spacing groove, explosion proof piece 404 is located explosion proof piece spacing inslot and is protruding relative explosion proof piece clamping ring 405, explosion proof piece 404 side perisporium and explosion proof piece spacing groove inner wall bonding fit, explosion proof piece 404 is explosion proof piece clamping ring 405 bellied terminal surface and explosion proof piece mounting groove bottom bonding fit relatively.
The embodiment has simple structure and convenient assembly. Wherein, the assembly process of the combustible gas detection tube part is specifically as follows:
(1) Firstly, a sensing probe socket 420 is mounted on a probe base 401, and a transmission wire 430 passes through a threading hole;
(2) Injecting epoxy resin into the threading hole through the injector until the epoxy resin is about to overflow, and then standing for hardening;
(3) Corresponding sealing rings are sleeved in the first tool retracting groove 4012 and the second tool retracting groove 4013 on the probe base 401 respectively;
(4) The sensing probe 410 is spliced with the sensing probe socket 420, and then a third sealing ring 530 is put into the probe outer sleeve 402 to be attached and abutted against the step ring 4021;
(5) The probe outer sleeve 402 is in threaded connection and fastening with the probe base 401;
(6) An adhesive material is arranged on the inner peripheral wall of the explosion-proof sheet pressing ring 405 and the bottom of an explosion-proof sheet mounting groove of the probe outer sleeve 402, the explosion-proof sheet 404 is placed into the groove of the explosion-proof sheet pressing ring 405, and then the explosion-proof sheet pressing ring 405 is mounted, screwed and fixed;
(7) Finally, a transmission wire 430 is connected and the probe mount 401 is mounted to the main body housing 100.
When the sensor probe 410 needs to be replaced, the sensor probe can be quickly replaced by disassembling the structure as shown in fig. 4.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (10)
1. An explosion-proof combustible gas detection sensor comprises a main body shell (100) and a cover body (200) fixed on the front surface of the main body shell (100); a visual window (210) is arranged on the inner side of the cover body (200); the two sides of the upper part of the main body shell (100) are provided with lead pipes (300); a combustible gas detection tube (400) is arranged at the bottom of the main body shell (100); the combustible gas detection tube (400) is inboard to be installed combustible gas detection subassembly, combustible gas detection subassembly is including sensing probe (410) and sensing probe socket (420) that the components of a whole that can function independently set up, sensing probe (410) and sensing probe socket (420) are connected through plug and are formed the electricity and connect, its characterized in that: the combustible gas detection tube (400) comprises a probe base (401) and a probe outer sleeve (402), a socket mounting groove and a wire perforation located at the bottom of the socket mounting groove are formed in the probe base (401), a sensing probe socket (420) is fixed in the socket mounting groove, a transmission wire (430) penetrates through the wire perforation, the wire perforation is sealed through epoxy resin (440) and fixes the transmission wire (430), the probe base (401) is directly connected with a main body shell (100), a first sealing ring (510) is arranged at the joint of the probe base (401) and the main body shell (100), and the probe outer sleeve (402) is sleeved outside the sensing probe (410) and is provided with an air inlet hole corresponding to a detection area of the sensing probe (410).
2. The explosion-proof combustible gas detection sensor of claim 1 wherein: the detection tube is characterized in that a detection tube connecting hole (101) is formed in the main body shell (100), a first inner threaded portion is formed in the inner wall of the detection tube connecting hole (101), a first threaded connecting portion (4011) extending into the detection tube connecting hole (101) and in threaded connection with the main body shell (100), a first tool retracting groove (4012) located on the inner side of the first threaded connecting portion (4011) are formed in the probe base (401), a first sealing ring (510) is embedded in the first tool retracting groove (4012), a first conical surface sealing fit portion (102) is arranged on the outer side of the inner threaded portion of the detection tube connecting hole (101), and the first conical surface sealing fit portion (102) is in sealing fit with the first sealing ring (510).
3. The explosion-proof combustible gas detection sensor of claim 1 wherein: the outside of the sensing probe socket (420) is in threaded connection and matched fixation with the inner wall of the socket mounting groove.
4. The explosion-proof combustible gas detection sensor of claim 1 wherein: the probe housing (402) forms a limit to the sensing probe (410) to maintain the sensing probe (410) in plug-in electrical connection with the sensing probe receptacle (420).
5. The explosion-proof combustible gas detection sensor of claim 4 wherein: the probe base (401) is in threaded connection and matched with the probe outer sleeve (402); the inner periphery of the probe outer sleeve (402) is provided with an abutting step ring (4021), and the abutting step ring (4021) is in abutting fit with one end part of the sensing probe (410) far away from the sensing probe socket (420).
6. The explosion-proof combustible gas detection sensor of claim 5 wherein: the probe base (401) periphery is equipped with second external screw thread portion, second tool withdrawal groove (4013), second sealed butt portion (4014) in proper order, second tool withdrawal groove (4013) is embedded to be equipped with second sealing washer (520), probe overcoat (402) inner wall corresponds second external screw thread portion and is equipped with second conical surface sealed cooperation portion (4022) with it and is equipped with in second internal screw thread portion outer end, second conical surface sealed cooperation portion (4022) and second sealing washer (520) form sealed cooperation.
7. The explosion-proof combustible gas detection sensor of claim 5 wherein: screw holes are radially formed in the side wall of the probe outer sleeve (402), and set screws (403) are connected in the screw holes in a threaded mode.
8. The explosion-proof combustible gas detection sensor of claim 5 wherein: a third sealing ring (530) is arranged between the abutting step ring (4021) and one end part of the sensing probe (410) far away from the sensing probe socket (420).
9. The explosion-proof combustible gas detection sensor of any one of claims 1-8 wherein: the outer end part of the air inlet is blocked by an explosion-proof sheet (404).
10. The explosion-proof combustible gas detection sensor of claim 9 wherein: the probe cover (402) is kept away from the outer end of probe base (401) and is equipped with explosion-proof piece mounting groove, the inlet port sets up in explosion-proof piece mounting groove bottom, explosion-proof piece mounting groove internal thread connection has explosion-proof piece clamping ring (405), explosion-proof piece clamping ring (405) are close to the one end of inlet port and are equipped with explosion-proof piece spacing groove, explosion-proof piece (404) are located explosion-proof piece spacing inslot and are protruding relative explosion-proof piece clamping ring (405), explosion-proof piece (404) side perisporium and explosion-proof piece spacing groove inner wall bonding fit, explosion-proof piece (404) are protruding terminal surface and explosion-proof piece mounting groove bottom bonding fit relative explosion-proof piece clamping ring (405).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320840503.4U CN219758243U (en) | 2023-04-10 | 2023-04-10 | Explosion-proof combustible gas detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320840503.4U CN219758243U (en) | 2023-04-10 | 2023-04-10 | Explosion-proof combustible gas detection sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219758243U true CN219758243U (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320840503.4U Active CN219758243U (en) | 2023-04-10 | 2023-04-10 | Explosion-proof combustible gas detection sensor |
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| Country | Link |
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| CN (1) | CN219758243U (en) |
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- 2023-04-10 CN CN202320840503.4U patent/CN219758243U/en active Active
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