CN211978833U

CN211978833U - Gas detection equipment

Info

Publication number: CN211978833U
Application number: CN202020498759.8U
Authority: CN
Inventors: 丁超; 王昕�; 张�杰; 于海洋
Original assignee: Yijie Safety Equipment Kunshan Co ltd
Current assignee: Yijie Safety Equipment Kunshan Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-11-20
Anticipated expiration: 2030-04-08

Abstract

The utility model relates to a gaseous detection technology field discloses a gaseous check out test set. The gas detection equipment comprises an explosion-proof shell component, a collection unit, an analysis unit and an explosion-proof wiring component, wherein the explosion-proof shell component is provided with a collection hole and a threading hole; the collecting unit is detachably arranged in the explosion-proof shell component and can collect gas entering through the collecting hole; the analysis unit is detachably arranged in the explosion-proof shell component and is detachably connected with the acquisition unit, and the analysis unit is used for analyzing the gas data acquired by the acquisition unit and transmitting gas information; the explosion-proof wiring assembly is connected to the first end of the explosion-proof shell assembly, the module wire harness of the analysis unit penetrates through the threading hole to be connected with the external wire harness, the explosion-proof wiring assembly can block the threading hole of the explosion-proof shell assembly, and the joint is located in the explosion-proof wiring assembly. The utility model discloses can detect multiple gas, flame proof shell subassembly and explosion-proof wiring subassembly are independent explosion-proof measure, have increased the practicality and the security of equipment.

Description

Gas detection equipment

Technical Field

The utility model relates to a gaseous detection technology field especially relates to a gaseous check out test set.

Background

At present, the application of gas goes deep into people's life and work. Harmful gas can be divided into toxic gas and combustible gas, and the combustible gas can cause deflagration when meeting an ignition source after leaking, thereby causing damage to the environment, human bodies and property. Many toxic gases not only cause poisoning, but also have flammability. The existing gas detection equipment is divided into an industrial type and a civil type according to application environments.

The civil equipment is characterized by small volume, light weight and beautiful appearance, and the wiring terminal is left outside the equipment and has no explosion-proof function. If the combustible gas leaks, the circuit inside becomes an ignition source for igniting the combustible gas after being electrified, and potential safety hazards exist during use. Simultaneously this type of equipment is because of service environment is single and not abominable to and small reason, equipment manufacturer all welds the dress with other modules with gaseous collection module and is connected usually, and this type of equipment only can detect a gas, does not have the function that detects different kinds of gas. And if the equipment is damaged, all modules need to be detached, even the shell is damaged, and the maintenance is very inconvenient.

Industrial equipment generally meets the requirements of explosion-proof performance due to the requirements of application sites. All the circuits and modules of the equipment are installed in the shell of the equipment in a centralized mode in the current market, and only one gas collection module with explosion-proof performance is reserved outside the equipment to facilitate later maintenance. When the device is installed, the external power-on and communication wiring harness can be accessed by opening the device, and the installation is very inconvenient. Meanwhile, if other modules or parts of the equipment except the gas collection module are damaged, the whole equipment needs to be disassembled, even all external wiring harnesses are detached from the equipment, the external wiring harnesses are connected after maintenance is finished, the maintenance process is extremely complicated, and the maintenance cost is high.

Accordingly, there is a need for a gas detection apparatus to solve the above existing problems.

SUMMERY OF THE UTILITY MODEL

Based on it be above, the utility model aims at providing a gaseous check out test set, this embodiment has realized detecting multiple gaseous function, and collection unit and analysis unit and pencil butt joint's separation, independent explosion-proof design increase practicality and security, and characteristics such as installation maintenance convenience.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a gas detection apparatus comprising:

the flame-proof shell component is provided with a collecting hole and a threading hole;

the collection unit is detachably arranged in the explosion-proof shell component and can collect gas entering through the collection hole;

the analysis unit is detachably arranged in the explosion-proof shell component and is detachably connected with the acquisition unit, and the analysis unit is used for analyzing the gas data acquired by the acquisition unit and transmitting gas information;

the explosion-proof wiring assembly is connected to the first end of the explosion-proof shell assembly, a module wire harness of the analysis unit penetrates through the threading hole to be connected with an external wire harness, the explosion-proof wiring assembly can block the threading hole of the explosion-proof shell assembly, and the joint is located in the explosion-proof wiring assembly.

Preferably, the collection unit comprises a gas sensor and a circuit board, the gas sensor is detachably mounted on the circuit board, and the circuit board is detachably connected with the analysis unit.

Preferably, the flameproof housing assembly comprises a housing and an end cover, a first mounting cavity is formed in the first end of the housing, an end cover mounting groove communicated with the first mounting cavity is formed in the end portion of the first end of the housing, the end cover is connected to the end cover mounting groove in a sealing mode, the collecting hole is formed in the end cover, and the collecting unit is arranged in the first mounting cavity and located on the inner side of the end cover.

Preferably, an explosion-proof net is arranged on the inner side of the end cover, and the collection hole is plugged by the explosion-proof net.

Preferably, the flameproof housing assembly further comprises a rear cover, a second end of the housing is provided with a second mounting cavity communicated with the first mounting cavity, a rear cover mounting groove communicated with the second mounting cavity is formed in the back side of the second end of the housing, the rear cover is connected in the rear cover mounting groove in a sealing mode, and the analysis unit is arranged in the second mounting cavity and located on the inner side of the rear cover.

Preferably, the flameproof housing component further comprises display glass, a glass mounting groove communicated with the second mounting cavity is formed in the front side of the second end of the housing, the display glass is mounted in the glass mounting groove, and the analysis unit is located on the inner side of the display glass.

Preferably, the analysis unit comprises a display screen located on the inner side of the display glass.

Preferably, a sealing ring is arranged between the end cover and the end cover mounting groove, sealing glue is arranged between the rear cover and the rear cover mounting groove, and sealing liquid is smeared between the display glass and the glass mounting groove.

Preferably, the second end of shell is provided with connecting portion, the through wires hole sets up on the connecting portion, explosion-proof wiring subassembly is fixed in on the connecting portion, the module pencil passes the through wires hole stretch into in the explosion-proof wiring subassembly.

Preferably, the explosion-proof wiring assembly comprises an explosion-proof blocking piece, the explosion-proof wiring assembly is provided with a wiring port, and the explosion-proof blocking piece is installed in the wiring port and sleeved on the connecting portion.

The utility model has the advantages that:

the collection unit and the analysis unit are detachably mounted in the explosion-proof shell component, and the collection unit and the analysis unit are detachably connected, so that on one hand, when the collection unit or the analysis unit is damaged, the damaged module is conveniently and independently detached from the explosion-proof shell component, and can be replaced or repaired outside the equipment, the installation and maintenance are convenient, and the working efficiency is improved; on the other hand, during the in-service use, can choose for use the collection unit kind according to the gaseous kind adaptability that detects, be convenient for replace the collection unit to realize detecting different gaseous functions. Moreover, the explosion-proof housing component plays an explosion-proof role for the acquisition unit and the analysis unit, the connection position of the module wire harness and an external electrifying and communication wire harness is positioned in the explosion-proof wiring component, and the explosion-proof wiring component blocks a threading hole of the explosion-proof housing component, so that explosion-proof wiring of a wiring end of the equipment is realized; the explosion-proof shell component and the explosion-proof wiring component are independent explosion-proof measures, and the practicability and the safety of the equipment are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a perspective view of a gas detection apparatus according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a gas detection apparatus according to an embodiment of the present invention;

fig. 3 is a sectional view of a housing of a gas detection apparatus according to an embodiment of the present invention;

fig. 4 is an exploded view of a gas detection device according to an embodiment of the present invention.

The figures are labeled as follows:

1-an explosion-proof housing component; 11-a housing; 111-a connecting portion; 112-a first mounting cavity; 1121-end cover mounting groove; 113-a second mounting cavity; 1131, mounting grooves for rear covers; 114-a glass mounting groove; 12-rear cover; 13-end cap; 131-a collection well; 14-explosion-proof net; 15-display glass;

2-a collection unit; 3-an analysis unit;

4-an explosion-proof wiring assembly; 41-a housing; 42-a shell cover; 5-explosion-proof plugging piece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In the prior art, the civil gas detection equipment mostly cannot have an explosion-proof function in order to meet the characteristics of small volume, light weight and attractive appearance. Once combustible gas leaks, the circuit inside the combustible gas is electrified to possibly become an ignition source for detonation, and hidden danger exists in use. Moreover, maintenance is inconvenient, and the function of detecting different kinds of gases is lost. Gaseous check out test set of industry satisfies the explosion-proof performance, nevertheless because the volume is great, and the quality is heavier relatively, inconvenient use, and need open the pencil that equipment could insert outside circular telegram and communication during the installation, the installation is very inconvenient with the maintenance. Because wiring end and module are all in the shell, if other modules or parts except gaseous collection module of equipment damage, then need take the equipment wholly apart, demolish whole from equipment with outside pencil even, connect outside pencil after the maintenance is finished again, and the maintenance process is extremely loaded down with trivial details, and the maintenance cost is high.

In order to solve the above problem, as shown in fig. 1-4, the utility model provides a gas detection device, this equipment includes explosion-proof shell subassembly 1, acquisition unit 2, analytical unit 3 and explosion-proof wiring subassembly 4.

Specifically, as shown in fig. 1 and 2, the flameproof housing assembly 1 is provided with a collection hole 131, and the collection unit 2 is detachably disposed in the first end of the flameproof housing assembly 1 and can collect gas entering through the collection hole 131. The analysis unit 3 is detachably arranged in the second end of the explosion-proof shell component 1 and detachably connected with the acquisition unit 2, and the analysis unit 3 is used for analyzing the gas data acquired by the acquisition unit 2 and transmitting gas information. The acquisition unit 2 is detachably connected with the analysis unit 3, so that on one hand, when the acquisition unit 2 or the analysis unit 3 is damaged, the damaged module is conveniently and independently detached from the flameproof housing assembly 1, and can be replaced or repaired outside the equipment, the installation and maintenance are convenient, and the working efficiency is improved; on the other hand, during the in-service use, can choose 2 kinds of collection unit for use according to the gaseous kind adaptability that detects, be convenient for replace collection unit 2 to realize detecting different gaseous function, flame proof shell subassembly 1 plays the effect of flame proof to collection unit 2 and analytic unit 3.

The explosion-proof wiring component 4 is connected to the first end of the explosion-proof shell component 1, the module wire harness of the analysis unit 3 passes through the threading hole of the explosion-proof shell component 1 to be connected with an external wire harness, the connection position is positioned in the explosion-proof wiring component 4, the explosion-proof wiring component 4 has the functions of plugging and explosion-proof on the connection position, and the explosion-proof wiring of the wiring end of the equipment is realized; the explosion-proof shell component 1 and the explosion-proof wiring component 4 are independent totally-enclosed cavities, have an explosion-proof function, increase the practicability and the safety of equipment, and have the characteristics of small volume, light weight, convenience in installation and maintenance and the like.

Further specifically, as shown in fig. 2 and 3, the flameproof housing assembly 1 includes a housing 11, a back cover 12, an end cover 13 and a display glass 15.

In this embodiment, a first mounting cavity 112 is disposed at a first end of the housing 11, an end cover mounting groove 1121 which is communicated with the first mounting cavity 112 and is designed and processed by a suitable explosion-proof type explosion-proof technology is disposed at an end of the first end of the housing 11, and the end cover 13 is sealingly disposed in the end cover mounting groove 1121. Specifically, the inner wall of the end cover mounting groove 1121 is provided with a mounting surface designed and processed by an explosion-proof type explosion-proof technology and a thread for fixing the end cover 13, the end cover 13 is mounted and fixed to the end cover mounting groove 1121 through the thread to block the first mounting cavity 112, and the acquisition unit 2 is arranged in the first mounting cavity 112 and located on the inner side of the end cover 13. Since the end cap 13 is fixed to the end cap mounting groove 1121 by screw threads, the end cap 13 can be repeatedly detached. In other embodiments, the end cover 13 may adopt other flameproof detachable mounting manners, and a specific mounting manner is not limited. For example, a threaded hole is added to the housing 11, and the end cap 13 is screwed into the threaded hole to be fixed.

A sealing ring is disposed between the end cover mounting groove 1121 and the end cover 13 to seal between the end cover 13 and the housing 11, and the material of the sealing ring is preferably an aging-resistant rubber material. The collection hole 131 is formed in the end cover 13, the anti-explosion net 14 is arranged on the inner side of the end cover 13, the collection hole 131 can be blocked by the anti-explosion net 14, gas enters the device through the collection hole 131 and the anti-explosion net 14 in sequence, and the collection unit 2 collects and analyzes gas information. The explosion-proof net 14 is used for plugging and carrying out explosion-proof treatment on the acquisition hole 131.

A second mounting cavity 113 communicated with the first mounting cavity 112 is arranged at the second end of the housing 11, a back cover mounting groove 1131 communicated with the second mounting cavity 113 and subjected to appropriate explosion-proof technical design processing is arranged on the back side of the second end of the housing 11, and the back cover 12 is mounted in the back cover mounting groove 1131 so as to be blocked in the second mounting cavity 113. The analysis unit 3 is disposed in the second mounting cavity 113 and is located inside the rear cover 12. After the back cover 12 is installed in the back cover installation groove 1131, the back cover 12 is firmly fixed by screws, and the explosion-proof effect can be increased.

Preferably, in this embodiment, an anti-aging sealing glue is disposed between the back cover 12 and the back cover installation groove 1131, so as to achieve a sealing effect between the back cover 12 and the housing 11. In other embodiments, a sealing ring may be additionally disposed between the back cover 12 and the back cover installation groove 1131 to achieve sealing.

The front side of the second end of the housing 11 is provided with a glass mounting groove 114, the glass mounting groove 114 is communicated with the second mounting cavity 113, the display glass 15 is processed by a proper explosion-proof type explosion-proof technology and is mounted in the glass mounting groove 114, and the analysis unit 3 is located on the inner side of the display glass 15. Preferably, an aging-resistant sealing liquid is applied between the display glass 15 and the glass mounting groove 114, so that the display glass 15 not only meets the explosion-proof requirement, but also has a good sealing effect, and the display glass can be used in outdoor severe environment. In other embodiments, a sealing ring may be additionally disposed between the display glass 15 and the glass installation groove 114 to achieve sealing.

In addition, it should be added that the explosion-proof technology is realized by those skilled in the art according to the prior art, and can be processed according to the national standard, and the explosion-proof technology is not described in detail herein.

In order to guarantee the light weight and the explosion-proof technical requirement of the embodiment, when the device is exploded inside or outside, the negative influence generated by explosion can be effectively isolated, and the gas environment inside or outside the device is not influenced. It is necessary to use a material which has high mechanical strength, light weight and is not combustible. Therefore, in this embodiment, the materials of the housing 11, the rear cover 12 and the end cover 13 may be aluminum alloy, and the outer surface is subjected to spraying treatment. The display glass 15 may be made of tempered glass having an appropriate thickness. In other embodiments, fiber-reinforced antistatic, aging-resistant, and flame-retardant plastics may also be used as the materials for the housing 11, the rear cover 12, and the end caps 13; the outdoor severe environment can be satisfied. The display glass 15 may be made of corundum, commonly known as artificial gem. The materials have good mechanical strength and meet the requirements of explosion-proof technology, and the display glass 15 meets the requirement of good light transmittance to transmit information.

Further specifically, in this embodiment, the collecting unit 2 includes a gas sensor and a circuit board, the gas sensor is used for collecting gas, and the gas sensor is detachably mounted on the collecting unit 2 in a hot-plug manner, so as to facilitate later maintenance and type replacement; the circuit board is detachably connected to the analysis unit 3. The analysis unit 3 is provided with a central processing module and a display screen, and the display screen is installed on the central processing module.

Before the collection unit 2 and the analysis unit 3 are installed, the collection unit 2 enters the housing 11 through the end cover installation groove 1121, and is installed on the side wall in the first end of the housing 11 in a threaded manner. Inside analysis unit 3 got into shell 11 through back lid mounting groove 1131, installed on the lateral wall in shell 11 second end with the mode of joint, preferably, fix collection unit 2 and analysis unit 3 in shell 11 through fasteners such as screws, increase the steadiness of equipment, analysis unit 3's display screen is installed in display glass 15 below. And then the circuit board of the acquisition unit 2 is electrically connected with the analysis unit 3. And finally, the rear cover 12 and the end cover 13 provided with the explosion-proof net 14 are arranged on the shell 11, so that the explosion-proof measure of the explosion-proof shell component 1 is realized. Preferably, the type of gas sensor in the acquisition unit 2 is determined according to the type of gas to be tested, so as to realize the detection of a plurality of gases. Moreover, the gas sensor of collection unit 2 passes through the design form of plug to and through the combination of the design of repeated dismouting of end cover 13, realized the utility model discloses convenient dismouting and change maintain gas sensor's purpose and detect different gaseous functions.

The working principle of the gas detection equipment is as follows: inside gaseous getting into equipment through gathering hole 131 and explosion-proof net 14, gas sensor gathers gaseous data rapidly, and the gas data that gathering unit 2 will gather calculates the back and gives the central processing module of analysis unit 3 with data transmission through the module pencil. Through central processing module calculation processing, show gas concentration on the display screen, still can show other information such as other warning information when reaching certain condition after, information on the display screen can see through display glass 15 and transmit for the staff on scene, can also spread information out for the remote environmental gas state of knowing of the equipment user of being convenient for of external equipment through the outside communication pencil.

In order to facilitate installation and maintenance, the structure that the wiring terminal is separated from the flameproof housing component 1 is designed in the embodiment. Specifically, an end cover 13 of the explosion-proof wiring component 4 is adopted to perform explosion-proof protection treatment of wiring harness butt joint.

As shown in fig. 4, in this embodiment, the second end of the housing 11 is provided with a connecting portion 111, the connecting portion 111 is provided with a threading hole along the length direction, the explosion-proof wiring assembly 4 is fixed on the connecting portion 111, and the module wire harness passes through the threading hole and extends into the explosion-proof wiring assembly 4. Preferably, an adjusting nut is further disposed on the connecting portion 111, and the orientation of the housing 11 can be adjusted by the adjusting nut, so that the worker can conveniently view information on the display screen.

The explosion-proof wiring assembly 4 comprises a shell 41 and a shell cover 42, wherein at least two wiring ports are arranged on the shell 41, one of the wiring ports is butted with a connecting part 111 of the shell 11, and a module wiring harness is led in from the connecting part 111. The other interfaces introduce the power-on harness and the communication harness, respectively, and connect the power-on harness and the communication harness, respectively, with the module harness inside the housing 41. Then, the shell cover 42 is installed, and the wiring terminal is located in the explosion-proof wiring component 4, so that explosion-proof treatment of the wiring terminal is achieved. In other embodiments, the wiring harness can also determine the installation mode according to the actual use environment, explosion-proof requirements or installation conditions.

The explosion-proof wiring assembly 4 further comprises an explosion-proof blocking piece 5, the explosion-proof blocking piece 5 is arranged between the shell 41 and the connecting portion 111, the outer side of the connecting portion 111 is provided with threads, and the explosion-proof blocking piece 5 is installed in a wiring port of the explosion-proof wiring assembly 4 and sleeved on the outer side of the threads of the connecting portion 111. The explosion-proof blocking piece 5 can seal, block and prevent explosion of the connecting part 111 and the wiring port of the explosion-proof wiring component 4, so that the explosion-proof housing component 1 and the explosion-proof wiring component 4 are independent. Further, when the power-on wire harness and the communication wire harness pass through the wiring port of the explosion-proof wiring assembly 4, the wiring port is also subjected to corresponding explosion-proof treatment through the explosion-proof blocking piece 5.

In other embodiments, if the collection unit 2 and the analysis unit 3 adopt the intrinsically safe explosion-proof technology, the explosion-proof technology in this embodiment can be designed and processed without, and after the wiring end is protected by the explosion-proof wiring component 4, this embodiment can also have an explosion-proof function, and at this moment, the embodiment also has good sealing protection performance.

The embodiment has the functions of displaying concentration and various warnings and detecting various gases, and realizes an explosion-proof wiring measure of the wiring end of the equipment; the explosion-proof shell component 1 and the explosion-proof wiring component 4 are independent explosion-proof measures, so that the practicability and the safety of the equipment are improved; the device also has the characteristics of small volume, light weight, convenience in installation and maintenance and the like. Moreover, the unique explosion-proof and sealing design of the device can be used in outdoor severe environment.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A gas detection apparatus, comprising:

the flameproof housing component (1) is provided with a collecting hole (131) and a threading hole;

the acquisition unit (2) is detachably arranged in the explosion-proof shell component (1) and can acquire gas entering through the acquisition hole (131);

the analysis unit (3) is detachably arranged in the explosion-proof shell component (1) and is detachably connected with the acquisition unit (2), and the analysis unit (3) is used for analyzing the gas data acquired by the acquisition unit (2) and transmitting gas information;

the explosion-proof wiring assembly (4) is connected to the first end of the explosion-proof housing assembly (1), a module wire harness of the analysis unit (3) penetrates through the threading hole to be connected with an external wire harness, the explosion-proof wiring assembly (4) can block the threading hole of the explosion-proof housing assembly (1), and the joint is located in the explosion-proof wiring assembly (4).

2. The gas detection apparatus according to claim 1, wherein the collection unit (2) comprises a gas sensor and a circuit board, the gas sensor being detachably mounted on the circuit board, the circuit board being detachably connected to the analysis unit (3).

3. The gas detection device according to claim 1, wherein the flameproof housing assembly (1) comprises a housing (11) and an end cover (13), a first mounting cavity (112) is formed in a first end of the housing (11), an end cover mounting groove (1121) communicated with the first mounting cavity is formed in an end portion of the first end of the housing (11), the end cover (13) is connected to the end cover mounting groove (1121) in a sealing mode, the collection hole (131) is formed in the end cover (13), and the collection unit (2) is arranged in the first mounting cavity (112) and located on the inner side of the end cover (13).

4. A gas detection apparatus according to claim 3, characterized in that the inner side of the end cap (13) is provided with an explosion-proof net (14), the explosion-proof net (14) closing the collecting hole (131).

5. The gas detection device according to claim 3, wherein the flameproof housing assembly (1) further comprises a rear cover (12), a second mounting cavity (113) communicated with the first mounting cavity (112) is arranged at a second end of the housing (11), a rear cover mounting groove (1131) communicated with the second mounting cavity (113) is arranged on the back side of the second end of the housing (11), the rear cover (12) is connected in the rear cover mounting groove (1131) in a sealing manner, and the analysis unit (3) is arranged in the second mounting cavity (113) and is located inside the rear cover (12).

6. The gas detection device according to claim 5, wherein the flameproof housing assembly (1) further comprises a display glass (15), a glass installation groove (114) communicated with the second installation cavity (113) is formed in the front side of the second end of the housing (11), the display glass (15) is installed in the glass installation groove (114), and the analysis unit (3) is located on the inner side of the display glass (15).

7. The gas detection apparatus according to claim 6, characterized in that the analysis unit (3) comprises a display screen, which is located inside the display glass (15).

8. The gas detection apparatus according to claim 6, wherein a sealing ring is disposed between the end cover (13) and the end cover mounting groove (1121), a sealing glue solution is disposed between the rear cover (12) and the rear cover mounting groove (1131), and a sealing liquid is applied between the display glass (15) and the glass mounting groove (114).

9. The gas detection apparatus according to claim 3, wherein the second end of the housing (11) is provided with a connection portion (111), the threading hole is provided on the connection portion (111), the explosion-proof wiring assembly (4) is fixed on the connection portion (111), and the module wire harness is passed through the threading hole to protrude into the explosion-proof wiring assembly (4).

10. The gas detection apparatus according to claim 9, wherein the explosion-proof wiring assembly (4) includes an explosion-proof block piece (5), the explosion-proof wiring assembly (4) is provided with a wiring port, and the explosion-proof block piece (5) is installed in the wiring port and sleeved on the connecting portion (111).