CN213579829U

CN213579829U - Flame-proof thermal resistor

Info

Publication number: CN213579829U
Application number: CN202022552078.8U
Authority: CN
Inventors: 陈雪中; 孙进; 高春甫; 孙顺远; 陈光远
Original assignee: Jiangsu Walrui Instrument Co ltd
Current assignee: Jiangsu Walrui Instrument Co ltd
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-06-29
Anticipated expiration: 2030-11-07

Abstract

The invention relates to the technical field of industrial equipment, and discloses an explosion-proof thermal resistor which comprises a resistor device, wherein the resistor device comprises a thermal resistor, the lower surface of the thermal resistor is fixedly connected with a first connecting wire, the upper surface of the thermal resistor is fixedly connected with a second connecting wire, the outer side of the resistor device is provided with an explosion-proof device, the explosion-proof device comprises an explosion-proof tube, the center of the upper surface of the explosion-proof tube is provided with a through hole, the through hole of the upper surface of the explosion-proof tube is fixedly connected with a first connecting tube, the upper surface of the first connecting tube is fixedly connected with a fixed tube, the center of the upper surface of the fixed tube is fixedly connected with a threaded tube, and the center of the lower surface of the explosion-proof tube is fixedly connected with a second connecting tube, so that the problems that most of the existing thermal resistor is not provided with explosion-proof measures, and in severe cases even cause fire problems.

Description

Flame-proof thermal resistor

Technical Field

The invention relates to the technical field of industrial equipment, in particular to an explosion-proof thermal resistor.

Background

Thermal resistance is one of the most commonly used temperature detectors in the medium and low temperature regions. Thermal resistance thermometry is based on the property that the resistance of a metal conductor increases with increasing temperature. Its main features are high measuring accuracy and stable performance. Among them, the platinum thermistor has the highest measurement accuracy, and is widely used in industrial temperature measurement and is made into a standard reference instrument. The thermal resistor is mostly made of pure metal materials, platinum and copper are most widely used at present, and nickel, manganese, rhodium and other materials are used for manufacturing the thermal resistor. The metal thermal resistor is made of a plurality of commonly used temperature sensing materials, and the most commonly used temperature sensing material is a platinum wire. The metal thermal resistance material for industrial measurement includes copper, nickel, iron-nickel, etc. in addition to platinum wire.

However, most of the existing thermal resistors do not adopt an explosion-proof measure when in use, when the thermal resistor part bursts, solid or liquid substances may be splashed out, which threatens people and causes potential safety hazard, and even causes fire in serious cases.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the flame-proof thermal resistor, which has the advantages of flame-proof, convenient replacement and the like, and solves the problems that most of the existing thermal resistors are not subjected to explosion-proof measures when in use, and when the thermal resistor part bursts, solid or liquid substances possibly splash out, so that potential safety hazards exist to personnel, and even fire disasters are caused in serious cases.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the flame-proof thermal resistor comprises a resistor device, wherein the resistor device comprises a thermal resistor, the lower surface of the thermal resistor is fixedly connected with a first connecting wire, and the upper surface of the thermal resistor is fixedly connected with a second connecting wire;

an explosion suppression device is arranged outside the resistance device;

the lower end of the front side of the explosion-proof device is provided with an explosion exhaust device;

an airflow guide plate is arranged at the upper end of the front side of the explosion suppression device;

and a connecting device is arranged above the explosion-proof device.

Preferably, the explosion-proof device comprises an explosion-proof tube, an opening is formed in the center of the upper surface of the explosion-proof tube, a first connecting tube is fixedly connected to the opening of the upper surface of the explosion-proof tube, a first fixing tube is fixedly connected to the upper surface of the first connecting tube, a threaded tube is fixedly connected to the center of the upper surface of the fixing tube, a second connecting tube is fixedly connected to the center of the lower surface of the explosion-proof tube, an explosion exhaust port is formed in the lower end of the front side face of the explosion-proof tube, and a heat dissipation through groove is formed in the upper end of the side face of.

Preferably, the explosion exhaust device comprises a spring shaft, the rear side of the spring shaft is fixedly connected with the upper edge of the explosion exhaust port on the front side of the explosion isolating pipe, the circumferential side of the spring shaft is fixedly connected with a baffle plate, the side of the baffle plate is rotatably connected with the inner wall of the explosion exhaust port, the rear side of the airflow guide plate is fixedly connected with the heat dissipation through groove on the front side of the explosion isolating pipe, and the cross section of the airflow guide plate is in an inverted triangle shape.

Preferably, the connecting device comprises a third connecting pipe, a top cover is fixedly connected to the center of the upper surface of the third connecting pipe, a line through hole is formed in the center of the upper surface of the top cover, a sealing rubber ring is fixedly connected to the lower end of the circumferential side surface of the third connecting pipe, the lower end of the inner wall of the third connecting pipe is in threaded connection with the outer side surface of a threaded pipe, the inner side surface of the sealing rubber ring is rotated to be connected with the circumferential side surface of the fixed pipe, the upper end of the circumferential side surface of the second connecting pipe penetrates through the inner wall of the sliding connecting line through hole, the lower end of the circumferential side surface of the first connecting pipe penetrates through the center of.

(III) advantageous effects

Compared with the prior art, the invention provides an explosion-proof thermal resistor, which has the following beneficial effects:

1. this flame proof thermal resistance, through setting up explosion exhaust apparatus, when the thermal resistance normal operating, the heat that the thermal resistance distributed out is discharged through heat dissipation through groove, prevent that the intraductal accumulated heat of flame proof makes the thermal resistance produce the unnecessary trouble, when the thermal resistance unexpected explosion, flame proof pipe blocks the thermal resistance, prevent that the piece that the thermal resistance explosion produced from spattering the staff, protect staff's safety, the heat that the explosion produced makes the intraductal air of flame proof expand rapidly, these hot-air back-off the baffle, then discharge rapidly through explosion gas vent and heat dissipation through groove, prevent that the intraductal atmospheric pressure of flame proof is too big to prop the explosion proof pipe and break, avoid secondary explosion, the safety of the device is improved.

2. This flame proof thermal resistor, through setting up the air current deflector, when the air current that the explosion produced flows through the air current deflector rapidly, air current deflector surface and air current friction produce sharp-pointed whistle, can in time inform the staff explosion production, in time turn off the power, reduce the loss.

3. This flame proof thermal resistor takes off connecting device from the fixed pipe through rotating connecting pipe three, then takes out the replacement with the thermal resistor from the screwed pipe opening part, installs connecting device again on the screwed pipe at last, and the screwed pipe prevents with three threaded connection of connecting pipe from droing, and sealed rubber ring lid prevents that entering seam such as steam from leading to the screwed pipe to rust in seam crossing, extension device life, and the replacement is convenient quick, improves maintenance efficiency.

Drawings

FIG. 1 is a schematic view of the external structure of the present invention;

FIG. 2 is a disassembled view of the internal structure of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 according to the present invention.

In the figure: 1 resistor device, 101 thermal resistor, 102 connecting line I, 103 connecting line II, 2 explosion-proof device, 201 explosion-proof tube, 202 through port, 203 connecting tube I, 204 connecting tube II, 205 explosion exhaust port, 206 heat dissipation through groove, 207 fixing tube, 208 threaded tube, 3 explosion exhaust device, 301 spring shaft, 302 baffle, 4 airflow guide plate, 5 connecting device, 501 connecting tube III, 502 top cover, 503 circuit through hole and 504 sealing rubber ring.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: a flame-proof thermal resistor comprises a resistor device 1, wherein the resistor device 1 comprises a thermal resistor 101, the lower surface of the thermal resistor 101 is fixedly connected with a first connecting wire 102, and the upper surface of the thermal resistor 101 is fixedly connected with a second connecting wire 103;

the flame-proof device 2 is arranged on the outer side of the resistance device 1;

the lower end of the front side of the explosion-proof device 2 is provided with an explosion exhaust device 3;

the upper end of the front side of the explosion-proof device 2 is provided with an airflow guide plate 4;

and a connecting device 5 is arranged above the explosion-proof device 2.

The explosion-proof device 2 comprises an explosion-proof tube 201, a through hole 202 is arranged at the center of the upper surface of the explosion-proof tube 201, a first connecting tube 203 is fixedly connected at the through hole 202 of the upper surface of the explosion-proof tube 201, a fixed tube 207 is fixedly connected at the upper surface of the first connecting tube 203, a threaded tube 208 is fixedly connected at the center of the upper surface of the fixed tube 207, a second connecting tube 204 is fixedly connected at the center of the lower surface of the explosion-proof tube 201, an explosion exhaust port 205 is arranged at the lower end of the front side surface of the explosion-proof tube 201, a heat dissipation through groove 206 is arranged at the upper end of the side surface of the explosion-proof tube 201, the explosion exhaust device 3 comprises a spring shaft 301, the rear side surface of the spring shaft 301 is fixedly connected at the upper edge of the explosion exhaust port 205 of the front side surface of the explosion-proof tube 201, a baffle 302 is fixedly connected at the circumferential, the cross section of the airflow guide plate 4 is in an inverted triangle shape, the connecting device 5 comprises a third connecting pipe 501, a top cover 502 is fixedly connected to the center of the upper surface of the third connecting pipe 501, a circuit through hole 503 is formed in the center of the upper surface of the top cover 502, a sealing rubber ring 504 is fixedly connected to the lower end of the circumferential side surface of the third connecting pipe 501, the lower end of the inner wall of the third connecting pipe 501 is in threaded connection with the outer side surface of the threaded pipe 208, the inner side surface of the sealing rubber ring 504 is rotatably connected with the circumferential side surface of the fixed pipe 207, the upper end of the circumferential side surface of the second connecting pipe 103 penetrates through the inner wall of the sliding connecting circuit through hole 503, the lower end of the circumferential side surface of the first connecting pipe 102 penetrates through the center of the lower surface of the sliding connecting pipe 204, the thermal resistor 101 is located inside the explosion-proof pipe 201, the fire-fighting safety belt can threaten personnel, has potential safety hazard and even causes fire in serious cases.

When the explosion-proof thermal resistor is used, the thermal resistor 101 is connected with other equipment through the connecting wire II 103 and the connecting wire I102, when the thermal resistor 101 works normally, heat emitted by the thermal resistor 101 is discharged through the heat dissipation through groove 206, unnecessary faults of the thermal resistor 101 caused by heat accumulation in the explosion-proof tube 201 are prevented, when the thermal resistor 101 is subjected to accidental explosion, the explosion-proof tube 201 blocks the thermal resistor 101, fragments generated by explosion of the thermal resistor 101 are prevented from being splashed to workers, safety of the workers is protected, air in the explosion-proof tube 201 is rapidly expanded due to the heat generated by explosion, the baffle 302 is pushed open by the hot air, then the hot air is rapidly discharged through the explosion exhaust port 205 and the heat dissipation through groove 206, the explosion-proof tube 201 is prevented from being propped by overlarge internal pressure of the explosion-proof tube 201, secondary explosion is avoided, safety of the device is improved, after the hot air is discharged, the spring shaft 301 is elastically restored to enable the baffle, and the airflow guide plate 4 is arranged outside the heat dissipation through groove 206, when airflow generated by explosion rapidly flows through the airflow guide plate 4, sharp whistle is generated by the friction between the surface of the airflow guide plate 4 and the airflow, workers can be informed of the generation of explosion in time, power supply is turned off in time, loss is reduced, when the thermal resistor 101 needs to be replaced, the connecting device 5 is taken down from the fixed pipe 207 by rotating the connecting pipe three 501, then the thermal resistor 101 is taken out from the opening of the threaded pipe 208 for replacement, finally the connecting device 5 is installed on the threaded pipe 208 again, the threaded pipe 208 is in threaded connection with the connecting pipe three 501 to prevent falling off, the sealing rubber ring 504 covers the seam to prevent water vapor and the like from entering the seam to cause the threaded pipe 208 to rust, the service life of the device is prolonged, the replacement is convenient and.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flame proof thermal resistance, includes resistance device (1), its characterized in that: the resistor device (1) comprises a thermal resistor (101), the lower surface of the thermal resistor (101) is fixedly connected with a first connecting wire (102), and the upper surface of the thermal resistor (101) is fixedly connected with a second connecting wire (103);

an explosion-proof device (2) is arranged on the outer side of the resistor device (1);

the lower end of the front side of the explosion-proof device (2) is provided with an explosion exhaust device (3);

an airflow guide plate (4) is arranged at the upper end of the front side of the explosion-proof device (2);

and a connecting device (5) is arranged above the explosion-proof device (2).

2. The flameproof thermal resistor of claim 1, characterized in that: explosion-proof device (2) is including explosion-proof pipe (201), opening (202) have been seted up to the upper surface center department of explosion-proof pipe (201), fixedly connected with connecting pipe (203) are located to upper surface opening (202) of explosion-proof pipe (201), the fixed pipe (207) of last fixed surface of connecting pipe (203), fixedly connected with screwed pipe (208) are located to the upper surface center of fixed pipe (207), fixedly connected with connecting pipe two (204) are located to the lower surface center of explosion-proof pipe (201), explosion gas vent (205) have been seted up to the leading flank lower extreme of explosion-proof pipe (201), heat dissipation logical groove (206) have been seted up to the side upper end of explosion-proof pipe (201).

3. The flameproof thermal resistor of claim 1, characterized in that: explosion exhaust apparatus (3) are including spring axle (301), the trailing flank fixed connection of spring axle (301) separates the leading flank explosion gas vent (205) upper edge department of detonation tube (201), the circumference side fixed connection of spring axle (301) has baffle (302), the side of baffle (302) is rotated and is connected the inner wall of explosion gas vent (205).

4. The flameproof thermal resistor of claim 1, characterized in that: the rear side face of the airflow guide plate (4) is fixedly connected with a front side face heat dissipation through groove (206) of the explosion-proof pipe (201), and the cross section of the airflow guide plate (4) is in an inverted triangle shape.

5. The flameproof thermal resistor of claim 1, characterized in that: connecting device (5) are including connecting pipe three (501), fixedly connected with top cap (502) is located at the upper surface center of connecting pipe three (501), circuit through-hole (503) have been seted up to the upper surface center department of top cap (502), the circumference side lower extreme fixedly connected with sealing rubber ring (504) of connecting pipe three (501), the lateral surface of inner wall lower extreme threaded connection screwed pipe (208) of connecting pipe three (501), the circumference side of connecting solid fixed pipe (207) is rotated to the medial surface of sealing rubber ring (504).

6. The flameproof thermal resistor of claim 1, characterized in that: the upper end of the circumferential side face of the second connecting line (103) penetrates through the inner wall of the sliding connecting line through hole (503), the lower end of the circumferential side face of the first connecting line (102) penetrates through the center of the lower surface of the second sliding connecting line (204), and the thermal resistor (101) is located inside the explosion-proof tube (201).