CN109556751B - Explosion-proof sensor based on temperature monitoring - Google Patents
Explosion-proof sensor based on temperature monitoring Download PDFInfo
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- CN109556751B CN109556751B CN201811303386.8A CN201811303386A CN109556751B CN 109556751 B CN109556751 B CN 109556751B CN 201811303386 A CN201811303386 A CN 201811303386A CN 109556751 B CN109556751 B CN 109556751B
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- explosion
- junction box
- proof
- resistance element
- thermal resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
Abstract
The invention relates to the technical field of sensors, in particular to an explosion-proof sensor based on temperature monitoring, which comprises a cylindrical explosion-proof shell, wherein the longitudinal section of the explosion-proof shell is of a T-shaped structure, a platinum thermal resistance element is horizontally inserted into the explosion-proof shell, a junction box is fixedly arranged on one end of the platinum thermal resistance element in a penetrating manner, the junction box is arranged in the explosion-proof shell, a cable is fixedly arranged on one end of the platinum thermal resistance element in the junction box, one end of the cable, far away from the platinum thermal resistance element, penetrates through the side wall of the junction box and extends to the outside of the junction box, and a first buffer fixing device is fixedly arranged on the junction box. The invention has simple structure, can play a good protection role on the platinum thermal resistance element through the arrangement of the explosion-proof shell and the explosion-proof shell cover, does not influence the work of the platinum thermal resistance element, and is suitable for the explosive environment.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to an explosion-proof sensor based on temperature monitoring.
Background
The sensor is a detection device which can sense the measured information and convert the sensed information into an electric signal or other information in a required form according to a certain rule to output so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like.
For temperature measurement in an explosive gas environment, a common temperature sensor is extremely easy to be damaged when explosion occurs, so that the common temperature sensor cannot work normally, and therefore an explosion-proof sensor based on temperature monitoring is needed to meet the requirement.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an explosion-proof sensor based on temperature monitoring.
In order to achieve the purpose, the invention adopts the following technical scheme:
an explosion-proof sensor based on temperature monitoring is designed, and comprises a cylindrical explosion-proof shell, wherein the longitudinal section of the explosion-proof shell is of a T-shaped structure, a platinum thermal resistance element is horizontally inserted into the explosion-proof shell, a junction box is fixedly arranged on one end of the platinum thermal resistance element in a penetrating manner and is arranged inside the explosion-proof shell, a cable is fixedly arranged on one end of the platinum thermal resistance element in the junction box, one end, far away from the platinum thermal resistance element, of the cable penetrates through the side wall of the junction box and extends to the outside of the junction box, a first buffering and fixing device is fixedly arranged on the junction box, a second buffering and fixing device is fixedly arranged on the platinum thermal resistance element on one side of the junction box, a sealing cover is vertically arranged outside the explosion-proof shell on one side of the junction box, a sealing ring is fixedly arranged on the side, close to the sealing cover, a groove matched with the sealing, the sealing ring is characterized in that one end of the sealing ring, which is far away from the sealing cover, is installed in the groove, a limiting fixing piece with a T-shaped longitudinal section is installed at one end of the explosion-proof shell, which is far away from the sealing cover, through threads, a gas filling port with a convex longitudinal section is formed in the side surface of the top end of the explosion-proof shell, which is inside the limiting fixing piece, a sealing plug is installed on the gas filling port, one end of the sealing plug, which is far away from the sealing cover, is exposed outside the gas filling port and contacts with the surface of the limiting fixing piece, an explosion-proof shell cover is arranged on the side surface of the sealing cover, which is far away from the explosion-proof shell, a reinforcing device is fixedly arranged on the side surface of the explosion-proof shell cover, which is close to the explosion-proof shell, the anti-skidding stripes are fixedly arranged on the outer surface of the limiting cylinder in an equidistant mode, and the anti-explosion shell cover on one side of the connecting rod is provided with mounting holes in a penetrating mode.
Preferably, the first buffering fixing device comprises a plurality of second springs, the second springs are equidistantly fixed on the outer side wall of the junction box, an arc-shaped second gasket is fixedly arranged at one end, far away from the junction box, of each second spring, and the side face, far away from the second springs, of each second gasket is in contact with the inner wall of the explosion-proof shell.
Preferably, second buffering fixing device includes insulation support, insulation support establishes on platinum resistance element with the fixed cover of axle center, insulation support is the equidistance fixed first spring that is equipped with, and a plurality of first springs are the circumference and arrange on insulation support, insulation support's one is served to fixed curved first gasket that is equipped with is kept away from to first spring, the side that first spring was kept away from to first gasket contacts with explosion-proof shell inner wall.
Preferably, the first gasket is fixedly provided with heat conducting fins on the inner side wall of the explosion-proof shell at one side far away from the junction box at equal intervals.
Preferably, the side of the junction box far away from the platinum thermal resistance element is fixedly provided with a cable protection sleeve in a penetrating mode, one end, far away from the junction box, of the cable protection sleeve sequentially penetrates through the sealing cover and the explosion-proof shell cover, the sealing cover is made of rubber materials, and one end, far away from the platinum thermal resistance element, of the cable penetrates through the cable protection sleeve.
The invention provides an explosion-proof sensor based on temperature monitoring, which has the beneficial effects that: the invention has simple structure, can play a good protection role on the platinum thermal resistance element through the arrangement of the explosion-proof shell and the explosion-proof shell cover, does not influence the work of the platinum thermal resistance element, and is suitable for the explosive environment.
Drawings
Fig. 1 is a schematic structural diagram of an explosion-proof sensor based on temperature monitoring according to the present invention;
fig. 2 is a front view of an explosion-proof sensor based on temperature monitoring according to the present invention.
In the figure: the anti-explosion device comprises an anti-explosion shell 1, a platinum thermal resistance element 2, a sealing cover 3, an insulating sleeve 4, a first spring 5, a first gasket 6, a groove 7, a sealing ring 8, a junction box 9, a second spring 10, a second gasket 11, an anti-explosion shell cover 12, a cable 13, a cable protective sleeve 14, a mounting hole 15, a sealing plug 16, a limiting fixing piece 17, a limiting cylinder 18, a heat conducting sheet 19, a connecting rod 20 and an anti-skid stripe 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, an explosion-proof sensor based on temperature monitoring, includes a cylindrical explosion-proof housing 1, the longitudinal section of the explosion-proof shell 1 is of a T-shaped structure, a platinum thermal resistance element 2 is horizontally inserted in the explosion-proof shell 1, one end of the platinum thermal resistance element 2 is fixedly provided with a junction box 9 in a penetrating way, and terminal box 9 sets up inside explosion-proof housing 1, platinum resistance element 2 in terminal box 9 serves and fixes being equipped with cable 13, the one end that platinum resistance element 2 was kept away from to cable 13 runs through terminal box 9 lateral wall and extends to the terminal box 9 outside, the fixed first buffering fixing device that is equipped with on terminal box 9, first buffering fixing device includes a plurality of second springs 10, a plurality of second springs 10 equidistance are fixed on the lateral wall of terminal box 9, one of terminal box 9 is kept away from to second spring 10 serves and fixes being equipped with curved second gasket 11, second gasket 11 keeps away from the side of second spring 10 and contacts with explosion-proof housing 1 inner wall. The junction box 9 is stably fixed inside the explosion-proof housing 1 through the first buffer fixing device.
Fixed second buffering fixing device that is equipped with on the platinum resistance element 2 of terminal box 9 one side, second buffering fixing device includes insulation support 4, insulation support 4 is fixed establishes on platinum resistance element 2 with the axle center, insulation support 4 is last to be equidistant fixed being equipped with first spring 5, and a plurality of first spring 5 are the circumference range on insulation support 4, first spring 5 is kept away from one of insulation support 4 and is served fixed being equipped with curved first gasket 6, the side that first spring 5 was kept away from to first gasket 6 contacts with explosion-proof housing 1 inner wall, first gasket 6 is kept away from explosion-proof housing 1 inside wall of terminal box 9 one side and is equidistant fixed being equipped with heat conduction piece 19. The second buffer fixing device can stably fix the platinum thermal resistance element 2 in the explosion-proof shell 1, and plays a role in protecting the platinum thermal resistance element 2.
A sealing cover 3 is vertically arranged outside the explosion-proof shell 1 at one side of the junction box 9, a sealing ring 8 is fixedly arranged on the side surface of the sealing cover 3 close to the explosion-proof shell 1, a groove 7 matched with the sealing ring 8 is fixedly arranged on the side surface of the explosion-proof shell 1 close to the sealing cover 3, one end of the sealing ring 8 far away from the sealing cover 3 is arranged in the groove 7, a limiting fixing piece 17 with a T-shaped longitudinal section is arranged on one end of the explosion-proof shell 1 far away from the sealing cover 3 in a threaded manner, an air filling port with a convex longitudinal section is arranged on the side surface of the top end of the explosion-proof shell 1 inside the limiting fixing piece 17, a sealing plug 16 is arranged on the air filling port, one end of the sealing plug 16 far away from the sealing cover 3 is exposed outside the air filling port and contacts with the surface of the limiting fixing piece 17, inert gas can be introduced into the interior of the explosion-proof housing 1 through the gas inlet, and the inert gas can protect the platinum thermistor element 2 again when explosion occurs.
An explosion-proof shell cover 12 is arranged on the side face, far away from the explosion-proof shell 1, of the sealing cover 3, a reinforcing device is fixedly arranged on the side face, close to the explosion-proof shell 1, of the explosion-proof shell cover 12, the reinforcing device comprises four connecting rods 20, one ends of the four connecting rods 20 are jointly and vertically fixed on the explosion-proof shell cover 12, the other ends of the four connecting rods 20 are jointly and vertically fixed with a limiting cylinder 18, the limiting cylinder 18 is in threaded sleeve installation on a limiting fixing part 17, an installation hole 15 is formed in the explosion-proof shell cover 12 on one side of each connecting rod 20 in a penetrating mode, anti-skid stripes 21 are fixedly arranged on the outer surface of the limiting cylinder 18 at equal intervals, a cable protection sleeve 14 is fixedly arranged on the side face, far away from the platinum thermal resistance element 2, of the junction box 9, one end, far away from the junction, the end of the cable 13 remote from the platinum thermistor components 2 is arranged through a cable protective sleeve 14. The explosion-proof shell cover 12 can be mutually pressed with the sealing cover 3 under the action of the reinforcing device, so that the interior of the explosion-proof shell 1 can keep good sealing performance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An explosion-proof sensor based on temperature monitoring comprises a cylindrical explosion-proof shell (1), wherein the longitudinal section of the explosion-proof shell (1) is of a T-shaped structure, and is characterized in that a platinum thermal resistance element (2) is horizontally inserted in the explosion-proof shell (1), one end of the platinum thermal resistance element (2) is fixedly provided with a junction box (9) in a penetrating manner, the junction box (9) is arranged in the explosion-proof shell (1), one end of the platinum thermal resistance element (2) in the junction box (9) is fixedly provided with a cable (13), one end of the cable (13) far away from the platinum thermal resistance element (2) penetrates through the side wall of the junction box (9) and extends to the outside of the junction box (9), a first buffering fixing device is fixedly arranged on the junction box (9), and a second buffering fixing device is fixedly arranged on the platinum thermal resistance element (2) on one side of the junction box (9), the anti-explosion sealing structure is characterized in that a sealing cover (3) is vertically arranged outside an anti-explosion shell (1) on one side of a junction box (9), a sealing ring (8) is fixedly arranged on the side, close to the anti-explosion shell (1), of the sealing cover (3), a groove (7) matched with the sealing ring (8) is fixedly arranged on the side, close to the sealing cover (3), of the anti-explosion shell (1), one end, far away from the sealing cover (3), of the sealing ring (8) is installed in the groove (7), a limiting fixing part (17) with a T-shaped longitudinal section is installed on one end, far away from the sealing cover (3), of the anti-explosion shell (1) in the limiting fixing part (17), a gas filling port with a convex-shaped longitudinal section is formed in the side of the top end of the anti-explosion shell (1), a sealing plug (16) is installed on the gas filling port, one end, far away from the sealing cover (3), be equipped with explosion-proof shell lid (12) on the side of explosion-proof shell (1) is kept away from in sealed lid (3), the fixed reinforcing apparatus that is equipped with on the side that explosion-proof shell (1) is close to explosion-proof shell lid (12), reinforcing apparatus includes four connecting rod (20), four the common vertical fixation of connecting rod (20) one end is on explosion-proof shell lid (12), four the common vertical fixation of connecting rod (20) other end has spacing drum (18), spacing drum (18) thread bush is established and is installed on spacing mounting (17), equidistant fixed anti-skidding stripe (21) that are equipped with on spacing drum (18) surface, run through on explosion-proof shell lid (12) of connecting rod (20) one side and seted up mounting hole (15).
2. The explosion-proof sensor based on temperature monitoring is characterized in that the first buffer fixing device comprises a plurality of second springs (10), the second springs (10) are equidistantly fixed on the outer side wall of the junction box (9), an arc-shaped second gasket (11) is fixedly arranged on one end, away from the junction box (9), of the second springs (10), and the side face, away from the second springs (10), of the second gasket (11) is in contact with the inner wall of the explosion-proof housing (1).
3. The explosion-proof sensor based on temperature monitoring as claimed in claim 1, wherein the second buffer fixing device comprises an insulating sleeve (4), the insulating sleeve (4) is fixedly sleeved on the platinum thermistor component (2) coaxially, the insulating sleeve (4) is fixedly provided with first springs (5) equidistantly, and a plurality of first springs (5) are arranged on the insulating sleeve (4) in a circumferential manner, one ends of the first springs (5) far away from the insulating sleeve (4) are fixedly provided with arc-shaped first gaskets (6), and the side surfaces of the first gaskets (6) far away from the first springs (5) are in contact with the inner wall of the explosion-proof housing (1).
4. The explosion-proof sensor based on temperature monitoring as claimed in claim 3 is characterized in that the first gasket (6) is fixedly provided with heat conducting fins (19) on the inner side wall of the explosion-proof housing (1) at equal intervals on the side far away from the junction box (9).
5. An explosion-proof sensor based on temperature monitoring as claimed in claim 1, characterized in that a cable protective sleeve (14) is fixedly arranged on the side of the junction box (9) far away from the platinum thermal resistance element (2) in a penetrating manner, one end of the cable protective sleeve (14) far away from the junction box (9) penetrates through the sealing cover (3) and the explosion-proof housing cover (12) in sequence, the sealing cover (3) is made of rubber material, and one end of the cable (13) far away from the platinum thermal resistance element (2) is arranged through the cable protective sleeve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303386.8A CN109556751B (en) | 2018-11-02 | 2018-11-02 | Explosion-proof sensor based on temperature monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303386.8A CN109556751B (en) | 2018-11-02 | 2018-11-02 | Explosion-proof sensor based on temperature monitoring |
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| Publication Number | Publication Date |
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| CN109556751A CN109556751A (en) | 2019-04-02 |
| CN109556751B true CN109556751B (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811303386.8A Active CN109556751B (en) | 2018-11-02 | 2018-11-02 | Explosion-proof sensor based on temperature monitoring |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096748U (en) * | 1991-02-11 | 1992-02-19 | 李北辰 | Explode preventing type temp. surveying control instrument |
| JP3117881B2 (en) * | 1994-09-26 | 2000-12-18 | 株式会社山武 | Insertion type detector |
| CN201717718U (en) * | 2010-05-28 | 2011-01-19 | 南阳防爆集团新普电机有限公司 | Anti-explosion temperature measuring junction box |
| CN203310526U (en) * | 2013-05-23 | 2013-11-27 | 河南中烟工业有限责任公司 | Thermometer protector |
| CN203705063U (en) * | 2014-03-06 | 2014-07-09 | 西安轨道交通装备有限责任公司 | Explosion-proof temperature sensor |
| RU169975U1 (en) * | 2016-10-19 | 2017-04-11 | Общество с ограниченной ответственностью "Ростовский прибор" | PRESSURE AND TEMPERATURE SENSOR - MANOMETRIC EXPLOSION PROTECTED |
| CN206469986U (en) * | 2017-01-20 | 2017-09-05 | 广东美的生活电器制造有限公司 | Temperature sensor and cooker |
| CN207300427U (en) * | 2017-10-11 | 2018-05-01 | 辽宁美意高科技有限公司 | A kind of explosion-proof temperature transmitter |
| CN207730330U (en) * | 2017-12-12 | 2018-08-14 | 广州汉川仪器仪表有限公司 | A kind of anti-explosion temperature sensor for air compressor |
| CN108106743A (en) * | 2017-12-20 | 2018-06-01 | 孟宪洪 | A kind of flame proof insulation thermocouple |
| CN108716941B (en) * | 2018-06-21 | 2024-02-02 | 迈格仪表(成都)有限公司 | Magnetostrictive multi-parameter measuring transmitter |
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2018
- 2018-11-02 CN CN201811303386.8A patent/CN109556751B/en active Active
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