CN221650324U - A diffusion-type gas monitoring explosion-proof equipment capable of rapid ventilation - Google Patents

Abstract

The utility model discloses a diffusion-type gas monitoring explosion-proof device capable of rapid ventilation, comprising a host, a probe, explosion-proof disc I, explosion-proof disc II, a sensor, an audible and visual alarm, and an explosion-proof air pump; the probe and the audible and visual alarm are both arranged on the host, the explosion-proof disc I and explosion-proof disc II are arranged on the probe housing, the sensor is arranged in the probe, and is located on the inner side of the explosion-proof disc I and directly facing the explosion-proof disc I; the explosion-proof air pump is arranged on the outer side of the explosion-proof disc II, and the explosion-proof air pump is sealed and connected to the probe housing. The utility model can shorten the response time of the explosion-proof device.

Description

A diffusion-type gas monitoring explosion-proof equipment capable of rapid ventilation

Technical Field

The utility model relates to the technical field of gas monitoring, in particular to a diffusion-type gas monitoring explosion-proof device capable of rapid gas exchange.

Background Art

Explosion-proof gas monitoring equipment is used to detect gas concentration in flammable, explosive, toxic and harmful gas environments, and send out signal alarms and other functions. At present, most explosion-proof monitoring equipment consists of two parts: a host and a probe. Since explosion-proof requires the two parts to be independently sealed, they are only connected by signal cables. The sensor for monitoring gas concentration is placed at the probe position, and the probe position is explosion-proof (the explosion-proof plate is extruded by metal particles of a certain size, with a gap of 1μm-100μm in the middle, through which air can pass, but slowly. After a certain thickness, it can block the flame. It is one of the important ways for explosion-proof equipment to interact with the outside world) for explosion-proof treatment. The gas diffuses from the explosion-proof plate to the sensor through free diffusion, thereby collecting gas concentration. When the air is not circulating or circulated slowly, the response time of the gas monitoring equipment is also extended, which poses a safety hazard due to untimely monitoring and early warning. It can be seen that the equipment response time is relatively long when relying on gas diffusion under natural conditions.

Utility Model Content

In view of this, the utility model provides a diffusion-type gas monitoring explosion-proof device capable of rapid ventilation, which can shorten the response time of the explosion-proof device.

The technical solution adopted by the utility model is as follows:

A diffusion-type gas monitoring explosion-proof device capable of rapid ventilation, comprising a host, a probe, an explosion-proof disk I, an explosion-proof disk II, a sensor, an audible and visual alarm, and an explosion-proof air pump;

The probe and sound and light alarm are both arranged on the main unit, the explosion-proof disk I and explosion-proof disk II are arranged on the probe housing, the sensor is arranged in the probe, and is located on the inner side of the explosion-proof disk I and directly facing the explosion-proof disk I; the explosion-proof vacuum pump is arranged on the outer side of the explosion-proof disk II, and the explosion-proof vacuum pump is sealed and connected to the probe housing.

Furthermore, the host is provided with an audible and visual alarm port, a probe installation port, and a cable inlet and outlet for connecting to a host computer, and the interfaces are all threaded explosion-proof structures.

Furthermore, the explosion-proof plate I is arranged at the bottom of the probe housing, and the explosion-proof plate II is arranged on the side wall of the probe housing.

Furthermore, a mounting groove is provided on the side wall of the probe housing, the mounting groove is communicated with the interior of the probe, and the explosion-proof plate II is fixed in the mounting groove.

Furthermore, the explosion-proof disc I and the explosion-proof disc II are welded to the probe housing as a whole.

Beneficial effects:

1. The utility model uses an explosion-proof vacuum pump to evacuate the inside of the explosion-proof monitoring equipment, so that a negative pressure is formed inside the explosion-proof monitoring equipment, thereby accelerating the diffusion of environmental gas into the equipment, thereby shortening the response time of the analytical gas. The overall structure of the explosion-proof equipment does not need to be greatly changed, and it can effectively accelerate the process of environmental gas entering the explosion-proof monitoring equipment for detection. The installed vacuum pump also meets the requirements of explosion-proof equipment, is easier to implement, and has no difference in maintenance from existing products.

2. The three interfaces of the utility model all use threaded explosion-proof structures that meet explosion-proof requirements and meet explosion-proof sealing requirements.

3. The explosion-proof discs I and II of the utility model are welded to the probe housing as a whole, and the connection and fixing form is simple and easy to implement and meets the explosion-proof requirements.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the utility model.

Among them, 1-main unit, 2-probe, 3-probe housing, 4-explosion-proof disk I, 5-explosion-proof disk II, 6-sensor, 7-explosion-proof vacuum pump.

DETAILED DESCRIPTION

The present invention is described in detail below with reference to the accompanying drawings and embodiments.

The utility model provides a diffusion-type gas monitoring explosion-proof device that can quickly exchange air. Two explosion-proof plates are arranged at the outer shell of the instrument for gas exchange. An explosion-proof vacuum pump is placed and sealed outside the explosion-proof plate away from the sensor. The explosion-proof vacuum pump vacuums the inside of the monitoring device to form a negative pressure inside the monitoring device, thereby accelerating the diffusion of environmental gas into the device, thereby shortening the response time of the analysis gas. The specific structure is as follows:

As shown in FIG. 1 , the diffusion-type gas monitoring explosion-proof equipment includes a host 1 , a probe 2 , an explosion-proof plate I 4 , an explosion-proof plate II 5 , a sensor 6 , an audible and visual alarm, and an explosion-proof air pump 7 .

The host 1 is provided with an audible and visual alarm port, a probe installation port, and a cable inlet and outlet for connecting to the host computer. The interfaces are all threaded explosion-proof structures that meet explosion-proof requirements. The audible and visual alarm, the probe 2, and the cable are connected to the host 1 through the audible and visual alarm port, the probe installation port, and the cable inlet and outlet, respectively.

In order to meet the explosion-proof requirements, both explosion-proof discs I4 and II5 are fully welded to the probe housing 3 as a whole, wherein the explosion-proof disc I4 is arranged at the bottom of the probe housing 3, and the explosion-proof disc II5 is arranged at the side wall of the probe housing 3. The side wall of the probe housing 3 is provided with an installation groove, which is communicated with the inside of the probe 2, and the explosion-proof disc II5 is welded in the installation groove. Specifically, a through hole is provided in the side wall of the probe housing 3, and support platforms are provided on the inner walls of the probe housing 3 on both sides of the through hole, and the support platforms on both sides extend relatively to install the explosion-proof disc II5.

The sensor 6 is arranged in the probe 2, and is located inside the explosion-proof disk I4 and directly facing the explosion-proof disk I4; the explosion-proof air pump 7 is arranged outside the explosion-proof disk II5, and the explosion-proof air pump 7 is sealed and connected to the probe housing 3. When the explosion-proof air pump 7 works, the air inside the probe 2 is pumped out to the external environment, so that a negative pressure is formed inside the probe 2, and the ambient gas in the external atmosphere enters the probe 2 under the action of the atmospheric pressure. The above structural arrangement can effectively shorten the replacement cycle of the gas environment inside the probe 2, thereby shortening the analysis response time of the instrument.

In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (5)

1. The diffusion type gas monitoring explosion-proof equipment capable of rapidly exchanging air is characterized by comprising a host, a probe, an explosion-proof sheet I, an explosion-proof sheet II, a sensor, an audible and visual alarm and an explosion-proof air pump;

The probe and the audible and visual alarm are arranged on the host, the explosion-proof sheet I and the explosion-proof sheet II are arranged on the probe shell, and the sensor is arranged in the probe and is positioned on the inner side of the explosion-proof sheet I and is opposite to the explosion-proof sheet I; the explosion-proof air pump is arranged on the outer side of the explosion-proof sheet II and is in sealing connection with the probe shell.

2. The rapid ventilation diffusion type gas monitoring explosion-proof equipment according to claim 1, wherein the host is provided with an audible and visual alarm port, a probe mounting port and a cable air inlet and outlet port for connection with an upper computer, and the interfaces are all of a threaded explosion-proof structure.

3. The rapid ventilation diffusion type gas monitoring explosion-proof equipment according to claim 1, wherein the explosion-proof sheet I is arranged at the bottom of the probe shell, and the explosion-proof sheet II is arranged on the side wall of the probe shell.

4. A rapid-ventilation diffusion type gas monitoring explosion-proof device according to claim 3, wherein the side wall of the probe shell is provided with a mounting groove, the mounting groove is communicated with the inside of the probe, and the explosion-proof sheet ii is fixed in the mounting groove.

5. A rapid-ventilation diffusion gas monitoring explosion-proof apparatus according to any one of claims 1 to 4, wherein the explosion-proof sheet i and the explosion-proof sheet ii are welded with the probe housing as a whole.