CN218674405U

CN218674405U - Explosion-proof sampler

Info

Publication number: CN218674405U
Application number: CN202223047072.0U
Authority: CN
Inventors: 刘秀柏; 张凯; 陈昌红
Original assignee: Anhui Tian Cheng Ke Automation Technology Co ltd
Current assignee: Anhui Tian Cheng Ke Automation Technology Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-21
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses an explosion-proof sample thief belongs to sample thief technical field, including the flame proof casing, weld in the sampling cavity of flame proof casing inner chamber center department, install in sampling mechanism and the carborundum filter core of sampling cavity inner chamber, one side welding of sampling cavity outer wall has heating module, wherein install the heating rod in the heating module, the opposite side welding of sampling cavity outer wall has temperature detecting module, the bottom of flame proof casing outer wall is formed with rather than the communicating line hole of crossing of inner chamber, the welding of flame proof casing bottom has the flame proof terminal box, the sampling cavity outer wall is formed with full range and marks mouth and appearance gas port, wherein cross the downthehole sealed installation of line and have explosion-proof spool, the flame proof casing is located line hole department and still installs two explosion-proof cable lockers, lie in carborundum filter core below on the flame proof terminal box and install binding post. The explosion-proof sampler does not affect the surrounding environment or detonate other substances even if the sampler explodes inside.

Description

Explosion-proof sampler

Technical Field

The utility model belongs to the technical field of the atmospheric sampling ware, especially, relate to explosion-proof sample thief.

Background

An atmospheric sampler is a common instrument used for collecting atmospheric environment and workshop site gas. It is widely used in atmospheric environment monitoring, hygiene and epidemic prevention, labor protection, scientific research and other units, and can also be used with related instruments. Through analyzing the sampled gas, the degree of the environment polluted by harmful gas is known, and the actual condition of pollution is provided for relevant departments, so that countermeasures are taken, and the healthy living environment of people is guaranteed.

In the process of implementing the present invention, the inventor finds that there are at least the following problems in the technology: patent with application number CN 202022030242.9-an explosion-proof air sampler, although "realize the real-time monitoring to the air quality, through the adsorption of permanent magnet, with the fixed setting of casing in the position that needs to carry out the detection, convenient operation, labour saving and time saving"; but the explosion-proof effect of its explosion-proof is poor, when inside explodes, can not prevent inside explosion propagation to external world, leads to stability and security lower.

For this reason, we propose explosion-proof samplers to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides explosion-proof sample thief, even the inside explosion that takes place of sample thief can not influence surrounding environment or detonate other materials yet, has guaranteed the stability and the security of this explosion-proof sample thief work, can effectively solve the problem among the background art.

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

the explosion-proof sampler comprises an explosion-proof shell, a sampling cavity welded at the center of an inner cavity of the explosion-proof shell, a sampling mechanism and a silicon carbide filter element, wherein the sampling cavity is arranged in the inner cavity of the sampling cavity;

the bottom of the outer wall of the flameproof shell is provided with a wire passing hole communicated with the inner cavity of the flameproof shell, the bottom of the flameproof shell is welded with a flameproof junction box, the outer wall of the sampling cavity is provided with a full-range calibration port and a sample gas port, an explosion-proof wire passing pipe is hermetically arranged in the wire passing hole, the flameproof shell is located at the wire passing hole and is further provided with two explosion-proof cable lockers, the flameproof junction box is located below a silicon carbide filter core and is provided with a wiring terminal, a wire enters the flameproof junction box through the explosion-proof wire passing pipe and is connected with an external cable, and the external cable enters the flameproof junction box and is fixed through an explosion-proof cable locker.

Preferably, the sampling mechanism is positioned right above the silicon carbide filter element; the sample gas is filtered by the silicon carbide filter element and then reaches the sampling mechanism to realize constant-speed sampling.

Preferably, the temperature detection module is provided with a temperature sensor; the temperature sensor is used for detecting the temperature in the inner cavity of the flameproof shell.

Preferably, the bottom wall of the flameproof shell is provided with two inner and outer grounding piles in the vertical direction; the explosion-proof shell is grounded.

Preferably, a pull rod is fixedly welded at the top of the outer wall of the sampling cavity, the pull rod is positioned right above the flameproof shell, and a rotatable rotating handle is installed at the top of the pull rod; so that a person holding the rotating handle can turn and open the sampling mechanism to release the filtered gas.

To sum up, the utility model discloses a technological effect and advantage:

the explosion-proof sampler seals all electronic components in the explosion-proof shell, when the inside of the electric equipment shell explodes, flame is sprayed out through all joint surfaces, the gaps can perform flameout function and cooling function, so that the flame passing through the gaps is fully cooled, the temperature of the flame is reduced to be lower than the minimum temperature required by igniting the explosive mixture outside the shell, and therefore explosion propagation can not occur, the explosive mixture outside the shell can not explode, the explosion-proof shell can bear the explosion pressure of the explosive gas mixture inside and prevent the internal explosion from propagating to the explosive mixture around the shell, and the electric equipment shell is called the explosion-proof shell, so that the surrounding environment can not be influenced or other substances can not be ignited even if the inside of the sampler explodes, and the working stability and safety of the explosion-proof sampler are ensured;

this explosion-proof sample thief, inside the electric wire passes through explosion-proof wire passing pipe entering explosion-proof terminal box, through binding post and outside cable junction, outside cable gets into the explosion-proof terminal box and passes through explosion-proof cable locking device fixed, satisfies the explosion-proof demand, has guaranteed that the circuit on this explosion-proof sample thief can normally work, and has the explosion-proof effect.

Drawings

FIG. 1 is a vertical cross-sectional view of one of the viewing angles of the present invention;

fig. 2 is a side view of another perspective of the present invention;

FIG. 3 is the horizontal cross-sectional view of the flame-proof junction box of the present invention.

In the figure: 1. rotating the handle; 2. a pull rod; 3. a sampling cavity; 4. an explosion-proof shell; 5. a heating module; 6. a temperature detection module; 7. a sampling mechanism; 8. a heating rod; 9. a temperature sensor; 10. a silicon carbide filter element; 11. a wire passing hole; 12. inner and outer grounding piles; 13. a full-range calibration port; 14. a sample gas port; 15. an explosion-proof wire passing pipe; 16. a wiring terminal; 17. an explosion-proof cable locker; 18. and (4) an explosion-proof junction box.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the explosion-proof sampler comprises an explosion-proof shell 4, a sampling cavity 3 welded at the center of an inner cavity of the explosion-proof shell 4, a sampling mechanism 7 and a silicon carbide filter element 10 which are installed in the inner cavity of the sampling cavity 3, wherein the sampling mechanism 7 is positioned right above the silicon carbide filter element 10, sample gas is filtered by the silicon carbide filter element 10 and then reaches the sampling mechanism 7, so that constant-speed sampling can be realized, a heating module 5 is welded on one side of the outer wall of the sampling cavity 3, a heating rod 8 is installed in the heating module 5, a temperature detection module 6 is welded on the other side of the outer wall of the sampling cavity 3, a temperature sensor 9 is installed on the temperature detection module 6, the type of the temperature sensor 9 can be selected from pt100 and is used for detecting the temperature in the inner cavity of the explosion-proof shell 4, a pull rod 2 is fixedly welded on the top of the outer wall of the sampling cavity 3, the pull rod 2 is positioned right above the explosion-proof shell 4, and a rotatable rotating handle 1 is installed on the top of the pull rod 2, so that a person can rotate the rotating handle 1 and open the sampling mechanism 7 to release the filtered gas;

the bottom of the outer wall of the flameproof shell 4 is provided with a wire passing hole 11 communicated with the inner cavity of the flameproof shell, two inner and outer grounding piles 12 are arranged on the bottom wall of the flameproof shell 4 along the vertical direction and used for grounding the flameproof shell 4, a flameproof junction box 18 is welded at the bottom of the flameproof shell 4, a full-range calibration port 13 and a sample gas port 14 are formed on the outer wall of the sampling cavity 3, an explosion-proof wire passing pipe 15 is hermetically arranged in the wire passing hole 11, two explosion-proof cable lockers 17 are further arranged at the position, located at the wire passing hole 11, of the flameproof shell 4, a wiring terminal 16 is arranged on the flameproof junction box 18 and located below the silicon carbide filter core 10, wires enter the interior of the flameproof junction box 18 through the explosion-proof wire passing pipe 15 and are connected with external cables through the wiring terminal 16, and the external cables enter the flameproof junction box 18 and are fixed through the explosion-proof cable lockers 17, so that the explosion-proof requirements are met.

The working principle is as follows: personnel only need rotate twist grip 1, open sampling mechanism 7, inside the gaseous entering flame proof casing 4 of sample, later filter through carborundum filter core 10 and carry upwards, treat that the gaseous arrival of sample sampling mechanism 7 can realize the constant speed sampling, temperature sensor 9 on the temperature detection module 6 is used for the temperature in the real-time detection flame proof casing 4, when heating, make the heating rod 8 work on the heating module 5, can carry out high-power heating.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The explosion-proof sampler comprises an explosion-proof shell (4), a sampling cavity (3) welded at the center of an inner cavity of the explosion-proof shell (4), a sampling mechanism (7) installed in the inner cavity of the sampling cavity (3) and a silicon carbide filter element (10), and is characterized in that one side of the outer wall of the sampling cavity (3) is welded with a heating module (5), wherein a heating rod (8) is installed in the heating module (5), and the other side of the outer wall of the sampling cavity (3) is welded with a temperature detection module (6);

the bottom of flame proof casing (4) outer wall is formed with rather than communicating line hole (11) of crossing of inner chamber, flame proof casing (4) bottom welding has flame proof terminal box (18), sampling cavity (3) outer wall is formed with full-scale demarcation mouth (13) and appearance gas port (14), wherein seal installation has explosion-proof wire tube (15) in crossing line hole (11), and flame proof casing (4) are located line hole (11) and still install two explosion-proof cable lockers (17), lie in carborundum filter core (10) below on flame proof terminal box (18) and install binding post (16), and inside the electric wire got into flame proof terminal box (18) through explosion-proof wire tube (15), through binding post (16) and outside cable junction, outside cable got into flame proof terminal box (18) and fixed through explosion-proof cable lockers (17).

2. Explosion-proof sampler according to claim 1, characterized in that the sampling mechanism (7) is located directly above the silicon carbide filter element (10).

3. Explosion-proof sampler according to claim 1, characterized in that the temperature detection module (6) has a temperature sensor (9) mounted thereon.

4. Explosion-proof sampler according to claim 1, characterized in that the bottom wall of the explosion-proof housing (4) is fitted with two inner and outer grounding studs (12) in the vertical direction.

5. The explosion-proof sampler according to claim 1, characterized in that a pull rod (2) is fixedly welded on the top of the outer wall of the sampling cavity (3), the pull rod (2) is positioned right above the explosion-proof shell (4), and a rotatable rotating handle (1) is installed on the top of the pull rod (2).