CN214668929U

CN214668929U - Explosion-proof gas sensor

Info

Publication number: CN214668929U
Application number: CN202120802678.7U
Authority: CN
Inventors: 李谦; 李秋实; 任耕北
Original assignee: Lianggu Technology Co ltd
Current assignee: Lianggu Technology Co ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-11-09
Anticipated expiration: 2031-04-20

Abstract

The utility model discloses an explosion-proof gas sensor, including casing and the electric elements who sets up in the casing, be cavity structure in the casing, be provided with electric elements in the cavity structure, cavity structure has wiring port and collection port, there is the end cover through threaded connection on the collection port, the tip of end cover is transparent medium; a sealed cavity is arranged between the transparent medium and the cavity structure, and the electric element is arranged below the transparent medium; through the sealed cavity structure of design, avoid the transmission cable to expose in gaseous environment, avoid with easily fire explosive gas contact, reduce the risk that the sensor during operation electromagnetism brought.

Description

Explosion-proof gas sensor

Technical Field

The utility model relates to a gas measurement field, concretely relates to explosion-proof gas sensor.

Background

The sensor is a commonly used measuring device in many engineering technical projects at present, and in general, an acquisition chip of the sensor needs to be in contact with a measured medium and then acquires signals. In consideration of the size of the sensor and the use environment, the wireless transmission is not considered in general, and the signal and power supply transmission is directly carried out by using a cable.

In some special environments, the environment is inevitably flammable and explosive or has strong corrosivity, such as ammonia gas, methane, hydrogen sulfide and other gas environments, under the environment, firstly, the waterproof design of the sensor is considered, and secondly, the explosion-proof design of the sensor is considered, so that the danger that the environment gas is exploded due to electromagnetic signals generated in the working process of the sensor is avoided.

Therefore, the existing sensor structure is not suitable for working under the special environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing an explosion-proof gas sensor, make sensor chip accomplish the collection to the measured medium under the condition of contactless medium through structural design.

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

an explosion-proof gas sensor comprises a shell and an electric element arranged in the shell, wherein a cavity structure is arranged in the shell, the electric element is arranged in the cavity structure, the cavity structure is provided with a wiring port and an acquisition port, the acquisition port is connected with an end cover through threads, and the end part of the end cover is a transparent medium;

and a sealed cavity is arranged between the transparent medium and the cavity structure of the shell connected with the end cover, and the electric element is arranged below the transparent medium.

In the above technical scheme, a supporting cover is arranged between the end cover and the cavity structure, an acquisition circuit is arranged between the supporting cover and the end cover, and a control circuit is arranged between the supporting cover and the cavity structure.

In the technical scheme, a first support ring and a second support ring are sequentially arranged between the support cover and the end cover, and the acquisition circuit is arranged between the two support rings.

In the above technical scheme, a layer of pad pasting is arranged between the second support ring and the end cover.

In the technical scheme, the connecting support is a symmetrical bending structure, and the shell is fixedly arranged at the bending part of the connecting support.

In the above technical scheme, the connecting support is symmetrically connected with the bending part with fixing parts, and the fixing parts are provided with fixing holes and sliding grooves.

In the above technical solution, the two sides of the cavity structure are symmetrically provided with the expansion wiring ports.

In the above technical solution, the acquisition circuit includes a reed switch and an infrared receiver.

Compared with the prior art, the beneficial effects of the utility model are that:

by designing a sealed cavity structure, the transmission cable is prevented from being exposed in a gas environment and from being contacted with flammable and explosive gas, and the risk caused by electromagnetism when the sensor works is reduced;

by adopting a transparent design structure, the sensor chip can acquire components contained in external gas through spectral analysis;

through the design to the support frame, can be so that the sensor housing possesses and installs under arbitrary complex environment, avoid the unable condition of installing of current sensor on a lot of unevenness's structure.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic structural view of the housing;

FIG. 3 is a schematic view of the explosion structure of the present embodiment;

wherein: 1 is a connecting support, 2 is a shell, 3 is an expansion port, 4 is a wiring port, 5 is a support cover, 6 is a support ring, 7 is an acquisition circuit, 8 is an end cover, 9 is a transparent medium, and 10 is a membrane.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

As shown in fig. 1, fig. 2, and fig. 3, are schematic structural diagrams of the present embodiment, and include the following structures:

the shell 2 is a main structure of the sensor, a cavity is arranged in the shell and used for placing an electric element and a control circuit, a wiring port 4 and an expansion port 3 are arranged on the shell 2, and the wiring port 4 and the expansion port 3 adopt a waterproof sealing structure. The shell 2 is provided with an acquisition port, and the acquisition port is connected with an end cover 8 through threads.

The end cap 8 is a structure with two through ends, wherein a transparent medium 9 is arranged on one end of the end cap, and the transparent medium 9 is a medium with a good light transmission effect, such as glass.

A supporting cover 5 is arranged in an end cover 8, an electric element, a control circuit and the like are arranged between the supporting cover 5 and a cavity in the shell 1, an acquisition circuit 7 is arranged between the supporting cover 5 and a transparent medium 9, the acquisition circuit 7 is arranged between two supporting rings 6, a first supporting ring is connected with the supporting cover 5, a second supporting ring is connected with the end cover 8, and the acquisition circuit 7 is fixedly connected between the first supporting ring and the second supporting ring. A membrane 10 is arranged between the second support ring and the transparent medium 9, the membrane 10 serving for filtering light. After the end cover and the shell are connected, a sealed cavity is formed in the whole shell and the end cover.

The bottom of the shell 2 is connected to the connecting support 1, the connecting support 1 is of a bending structure, the bent structure is of a concave structure, and the shell 2 is fixedly connected to the protruding face of the back face of the concave structure. And a connecting hole and a through groove are respectively arranged on two side edges of the bending structure. The attachment bracket 1 allows the entire sensor to be mounted without environmental impact.

The working principle of the embodiment is as follows: the circuit in the sealed shell is controlled to be opened through an electromagnetic switch or an infrared switch, external gas is analyzed through the collection spectrum emitted by the transparent glass through the collection circuit, and other contents and components in the external air are monitored through analyzing the spectrum.

The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.

Claims

1. An explosion-proof gas sensor, includes casing and the electric elements who sets up in the casing, its characterized in that: the shell is internally provided with a cavity structure, an electric element is arranged in the cavity structure, the cavity structure is provided with a wiring port and an acquisition port, the acquisition port is connected with an end cover through threads, and the end part of the end cover is a transparent medium;

2. An explosion-proof gas sensor as set forth in claim 1, wherein: a supporting cover is arranged between the end cover and the cavity structure, an acquisition circuit is arranged between the supporting cover and the end cover, and a control circuit is arranged between the supporting cover and the cavity structure.

3. An explosion proof gas sensor as defined in claim 2, wherein: a first supporting ring and a second supporting ring are sequentially arranged between the supporting cover and the end cover, and the acquisition circuit is arranged between the two supporting rings.

4. An explosion proof gas sensor as defined in claim 3, wherein: and a layer of pad pasting is arranged between the second support ring and the end cover.

5. An explosion-proof gas sensor as set forth in claim 1, wherein: the shell is fixedly arranged at the bending part of the connecting support.

6. An explosion proof gas sensor as defined in claim 5, wherein: the connecting support is symmetrically connected with the bending part through fixing parts, and fixing holes and sliding grooves are formed in the fixing parts.

7. An explosion-proof gas sensor as set forth in claim 1, wherein: and expansion wiring ports are symmetrically arranged on two sides of the cavity structure.

8. An explosion proof gas sensor as defined in claim 2, wherein: the acquisition circuit comprises a magnetic reed switch and an infrared receiver.