CN216483218U

CN216483218U - Safe explosion-proof instrument

Info

Publication number: CN216483218U
Application number: CN202123074541.3U
Authority: CN
Inventors: 庄金祥; 费力
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-10
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to an automatic change instrument and meter safety technical field, in particular to safe explosion-proof instrument, including outer box and interior box, interior box fixed mounting is in the inside of outer box, be provided with the baffle in the interior box, two spaces are divided into with the inside of interior box to the baffle, two spaces are first space and second space respectively, fixed mounting has instrument and a plurality of first temperature sensor in the first space, the instrument is provided with the cutting circuit, the cutting circuit is used for cutting off the power of instrument, fixed mounting has the monitoring circuit board in the second space, a plurality of first temperature sensor pass through electric wire and monitoring circuit board electric connection, the cutting circuit passes through electric wire and monitoring circuit board electric connection, a plurality of mounting holes have been seted up on the surface of outer box, equal fixed mounting has the installation pipe on every mounting hole, be provided with second temperature sensor in the installation pipe, every second temperature sensor all passes through electric wire and monitoring circuit board electric connection.

Description

Safe explosion-proof instrument

Technical Field

The utility model relates to an automatic change instrument and meter safety technical field, in particular to safe explosion-proof instrument.

Background

Explosion proof meters are electrical meters that can be safely used in environments with explosive mixtures. In general, in normal operation or in an accident state, sparks, arcs, hot surfaces, hot particles and the like can occur, and the electric instrument has certain energy and becomes a fire source for igniting flammable gas mixtures in an explosion dangerous environment. The explosion-proof instrument adopts certain safety technical measures during design and manufacture, and can ensure safe power supply, electricity utilization, detection and control in places with explosion risks, such as petroleum, chemical engineering and the like.

At present, chinese patent with publication number CN 213586577U discloses an explosion-proof instrument box, which comprises an explosion-proof box body, wherein an explosion-proof door is hermetically arranged on the explosion-proof box body, explosion-proof glass is arranged on the explosion-proof door, a heat insulation layer is arranged on the inner wall of the explosion-proof box body, a PLC controller is arranged on the heat insulation layer of one side wall in the explosion-proof box body, an instrument seat provided with an instrument is arranged at the lower part in the explosion-proof box body, and a cooling cavity provided with a coolant, a temperature sensor and a dust detector are respectively arranged at the upper part. The cooling cavity adopts a pipeline and is connected with the cooler through a wire inlet hole. An air inlet is arranged on the dust detector; the top surface of the explosion-proof box body is respectively provided with a temperature alarm and a dust alarm, and the bottom surface of the explosion-proof box body is provided with a signal wire inlet hole.

The above prior art solutions have the following drawbacks: the explosion-proof instrument box only detects the temperature and dust of the external environment, and monitors the change caused by the abnormal operation of the instrument.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safe explosion-proof instrument to solve the problem that above-mentioned prior art exists.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a safe explosion-proof instrument comprises an outer box body and an inner box body, wherein the inner box body is fixedly arranged inside the outer box body, a partition plate is arranged in the inner box body and divides the inside of the inner box body into two spaces which are respectively a first space and a second space, an instrument and a plurality of first temperature sensors are fixedly arranged in the first space, the instrument is provided with a cut-off circuit used for cutting off a power supply of the instrument, a monitoring circuit board is fixedly arranged in the second space, the first temperature sensors are electrically connected with the monitoring circuit board through electric wires, the cut-off circuit is electrically connected with the monitoring circuit board through electric wires, a plurality of mounting holes are formed in the surface of the outer box body, a mounting pipe is fixedly arranged on each mounting hole, and a second temperature sensor is arranged in the mounting pipe, each second temperature sensor all through the electric wire with monitor circuit board electric connection.

In a further embodiment, the outer box body and the inner box body are both explosion-proof box bodies, explosion-proof glass is fixedly mounted on the outer box body and the inner box body, and the explosion-proof glass is used for displaying the reading of the instrument.

In a further embodiment, the space between the outer box body and the inner box body is filled with an insulating layer for blocking heat exchange between the outer box body and the inner box body.

In a further embodiment, an alarm device is arranged inside the outer box body and comprises an alarm lamp and a buzzer, and the alarm device is electrically connected with the monitoring circuit board through an electric wire.

In a further embodiment, the outer box body is provided with an explosion-proof box door, the explosion-proof box door is provided with a sensing device, the sensing device is used for detecting the opening and closing states of the explosion-proof box door, and the sensing device is electrically connected with the cut-off circuit through an electric wire.

In a further embodiment, all the wires inside the outer box body and the inner box body are wrapped with insulating sleeves.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model has the advantages that the two nested explosion-proof boxes are arranged, the instrument and the monitoring circuit are respectively placed in the inner box body, the temperature sensors are respectively arranged in the inner box body and the outer box body for monitoring the temperature of the instrument and the external temperature, the instrument can be protected when the external environment is abnormal, and the power supply can be cut off for explosion prevention when the instrument circuit is abnormal;

2. the utility model discloses a set up induction system on the explosion-proof chamber door of outer box, induction system passes through the cutting off circuit and cuts off power supply when operating personnel opens the chamber door, and operating personnel need manual power-on adjustment instrument parameter again, helps improving personnel's operation safety.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic perspective view of the present invention.

In the figure, 1, an outer case; 2. an inner box body; 3. a partition plate; 4. a meter; 5. a first temperature sensor; 6. monitoring the circuit board; 7. a second temperature sensor; 8. explosion-proof glass; 9. an alarm device; 10. an explosion-proof box door; 11. an induction device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in fig. 1, the terms "bottom" and "top", "inner" and "outer" refer to directions toward and away from a particular component geometry, respectively, and the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present specification, "plurality" means two or more unless the direction of the center is specifically defined otherwise.

Example 1:

as shown in fig. 1-2, a safe explosion-proof instrument comprises an outer box body 1 and an inner box body 2, wherein the outer box body 1 and the inner box body 2 are explosion-proof box bodies, the outer box body 1 and the inner box body 2 are nested, the inner box body 2 is fixedly arranged in the outer box body 1, the inner box body 2 is used for placing instruments and other circuits, and the outer box body 1 is matched with the inner box body 2 to form a double-layer protection structure. Because outer box 1 and external flammable and explosive environment direct contact set up two explosion-proof boxes and can effectively isolated dust and get into the protection circuit device. The interval between outer box 1 and the interior box 2 is filled with insulating layer, and insulating layer is used for the heat exchange between separation outer box 1 and the interior box 2.

Be provided with baffle 3 in the interior box 2, two spaces are divided into to the inside of box 2 in baffle 3 will, and two spaces are first space and second space respectively, and fixed mounting has instrument 4 and a plurality of first temperature sensor 5 in the first space, and a plurality of first temperature sensor 5 distribute and set up, and first temperature sensor 5 is used for monitoring instrument binding post and the temperature of electrical components that generate heat. The meter 4 is provided with a cut-off circuit for cutting off the power supply of the meter 4. Fixed mounting has monitoring circuit board 6 in the second space, and a plurality of first temperature sensor 5 pass through electric wire and 6 electric connection of monitoring circuit board, and the cutting off circuit passes through electric wire and 6 electric connection of monitoring circuit board, and monitoring circuit board 6 acquires the temperature data of first temperature sensor 5 and sends a signal to the cutting off circuit, and control instrument deenergization realizes explosion-proof function. Explosion-proof glass 8 is fixedly installed on the inner box body 2, and the explosion-proof glass 8 is used for displaying the reading of the instrument.

Factor that arouses the explosion still includes external environment's change except that instrument circuit, in order to facilitate the monitoring external environment, a plurality of mounting holes have been seted up on the surface of outer box 1, equal fixed mounting has the installation pipe on every mounting hole, be provided with second temperature sensor 7 in the installation pipe, second temperature sensor 7 is used for monitoring external environment unusual, it is unusual to have the environment that probably arouses internal circuit when external environment is too high, consequently every second temperature sensor 7 all passes through electric wire and 6 electric connection of monitoring circuit board, monitoring circuit board 6 acquires the temperature data of second temperature sensor 7 and sends a signal to the circuit that cuts off, control instrument deenergizes, realize explosion-proof function. In addition to the second temperature sensor 7, other sensors such as a dust sensor or a humidity sensor may be installed in the installation hole according to the working environment of the meter. In order to read the instrument reading smoothly, the explosion-proof glass 8 is also fixedly arranged on the outer box body 1.

In this embodiment, the outer box 1 is provided with an explosion-proof box door 10, the explosion-proof box door 10 is provided with a sensing device 11, the sensing device 11 is used for detecting the opening and closing state of the explosion-proof box door 10, and the sensing device 11 is electrically connected with the cut-off circuit through an electric wire. Because the parameter setting of instrument must uncap the operation, this process is live operation, in order to further improve the implementation safety of this operation process, when operating personnel opened the explosion-proof chamber door 10 of outer box 1, induction system 11 senses explosion-proof chamber door 10 and opens and send the signal to the cutting circuit, and the cutting circuit cuts off the instrument power, carries out the parameter setting operation after operating personnel is manual to power on again, and the condition of electric shock is electrocuted in the electric leakage can effectively be avoided to this process, improves personnel's operation safety.

In this embodiment, the inside of outer box 1 is provided with alarm device 9, and alarm device 9 includes alarm lamp and bee calling organ, and alarm device 9 passes through electric wire and monitoring circuit board 6 electric connection, and when monitoring circuit board 6 detected the temperature anomaly cut-off power supply of external world or instrument, monitoring circuit board 6 still can be to alarm device 9 signals, and alarm device 9 is through audible and visual alarm.

In this embodiment, all the wires inside the outer box 1 and the inner box 2 are wrapped with insulating sleeves, and all the wires are designed to be small current, so as to avoid the risk of spark caused by large current.

In the embodiments of the present disclosure, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the embodiments disclosed in the present invention can be understood by those skilled in the art according to specific situations.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a safe explosion-proof instrument, includes outer box (1) and interior box (2), interior box (2) fixed mounting be in the inside of outer box (1), its characterized in that: the inner box body (2) is internally provided with a partition board (3), the partition board (3) divides the inside of the inner box body (2) into two spaces which are respectively a first space and a second space, an instrument (4) and a plurality of first temperature sensors (5) are fixedly arranged in the first space, the instrument (4) is provided with a cut-off circuit used for cutting off a power supply of the instrument (4), a monitoring circuit board (6) is fixedly arranged in the second space, the first temperature sensors (5) are electrically connected with the monitoring circuit board (6) through electric wires, the cut-off circuit is electrically connected with the monitoring circuit board (6) through electric wires, the surface of the outer box body (1) is provided with a plurality of mounting holes, each mounting hole is fixedly provided with a mounting pipe, and a second temperature sensor (7) is arranged in the mounting pipe, each second temperature sensor (7) is electrically connected with the monitoring circuit board (6) through an electric wire.

2. A safety explosion proof instrument according to claim 1, wherein: the anti-explosion box is characterized in that the outer box body (1) and the inner box body (2) are anti-explosion box bodies, anti-explosion glass (8) is fixedly mounted on the outer box body (1) and the inner box body (2), and the anti-explosion glass (8) is used for displaying the reading of an instrument.

3. A safety explosion proof instrument according to claim 1, wherein: and an insulating layer is filled between the outer box body (1) and the inner box body (2) at intervals and is used for blocking heat exchange between the outer box body (1) and the inner box body (2).

4. A safety explosion proof instrument according to claim 1, wherein: the alarm device is characterized in that an alarm device (9) is arranged inside the outer box body (1), the alarm device (9) comprises an alarm lamp and a buzzer, and the alarm device (9) is electrically connected with the monitoring circuit board (6) through an electric wire.

5. A safety explosion proof instrument according to claim 1, wherein: the anti-explosion box door is characterized in that the outer box body (1) is provided with an anti-explosion box door (10), the anti-explosion box door (10) is provided with an induction device (11), the induction device (11) is used for detecting the opening and closing states of the anti-explosion box door (10), and the induction device (11) is electrically connected with the cut-off circuit through an electric wire.

6. A safety explosion proof instrument according to any one of claims 1 to 5, wherein: all electric wires in the outer box body (1) and the inner box body (2) are wrapped by insulating heat insulation sleeves.