CN219695846U

CN219695846U - Combustible gas alarm controller

Info

Publication number: CN219695846U
Application number: CN202320419004.8U
Authority: CN
Inventors: 李俊晖; 贾世星; 梁震; 赵森; 盖升杰
Original assignee: Qingdao Allred Electronic Co ltd
Current assignee: Qingdao Add Value Flow Metering Co ltd; Qingdao Allred Electronic Co ltd; Qingdao Aubon Measuring Device Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-09-15
Anticipated expiration: 2033-03-07

Abstract

The utility model belongs to the technical field of gas detection, and particularly provides a flammable gas alarm controller, which comprises a box body, wherein a relay module, a 4-20mA analog communication module, an RS485 communication module, a wireless communication module and a control circuit board are arranged in an inner cavity of the box body, and the control circuit board is respectively communicated with the relay module, the 4-20mA analog communication module, the RS485 communication module and the wireless communication module through signal wires; the inner cavity of the box body is provided with a wiring board which is respectively communicated with the relay module, the 4-20mA analog communication module and the RS485 communication module through signal wires, a connector is arranged at the wiring board, the signal input end of the connector penetrates out of the box body outwards, and the connector is used for connecting external signal wires. The combustible gas alarm controller is convenient to adapt to different types of gas alarms, and has wide application range.

Description

Combustible gas alarm controller

Technical Field

The utility model belongs to the technical field of gas detection, and particularly provides a flammable gas alarm controller.

Background

The on-site operation range of engineering enterprises such as petrochemical industry is large, a plurality of gas detectors are required to be installed at different places, detector signals are intensively transmitted to a flammable gas alarm controller for display, and the flammable gas alarm controller is required to display a plurality of detectors.

The inventor knows that in the related technical scheme, the controller performs selection according to the gas detector to be communicated, for example, part of the controllers can only access to the detector of the RS485 communication type. That is, the communication mode of the flammable gas alarm which can be accessed by the controller is single, and the gas detector which is not convenient to adapt to different communication modes is not convenient.

In addition, a plurality of power-consuming electronic components are arranged in the gas alarm controller, and when the gas alarm controller is used in a high-temperature environment in summer, the gas alarm controller needs to be cooled so as to influence the normal operation of the gas alarm controller on the side. In general, the ventilation and heat dissipation effects of the shutter structure can be achieved, but more dust is easily accumulated in the controller under the conditions of poor external environment and more dust; and after the shutter structure is closed, heat dissipation inside the controller cannot be effectively realized.

Disclosure of Invention

The utility model aims to provide a flammable gas alarm controller which is used for solving at least one of the technical problems.

In order to solve the above problems in the prior art, one or more embodiments of the present utility model provide a flammable gas alarm controller, including a case, in which a relay module, a wireless communication module, and a control circuit board are installed in an inner cavity of the case, and a 4-20mA analog communication module and/or an RS485 communication module are detachably installed in the case; the 4-20mA analog communication module, the RS485 communication module and the control circuit board of the box body are respectively communicated with the relay module, the 4-20mA analog communication module, the RS485 communication module and the wireless communication module through signal wires;

the inner cavity of the box body is provided with a wiring board which is respectively communicated with the relay module, the 4-20mA analog communication module and the RS485 communication module through signal wires, a connector is arranged at the wiring board, the signal input end of the connector penetrates out of the box body outwards, and the connector is used for connecting external signal wires.

Further, the box body is provided with a semiconductor refrigerator, the cold end of the semiconductor refrigerator is positioned in the inner cavity of the box body, and the hot end of the semiconductor refrigerator is positioned outside the box body; the side wall of the box body is provided with a vent, a row of blades are rotatably arranged at the vent, the rotating axes of the blades are parallel to each other, one end of each blade is rotatably arranged at the vent through the rotating shaft, and the other end of each blade can synchronously rotate to enable the vent to be in a ventilation state and a blocking state; when the air conditioner is in a ventilation state, the other ends of the blades are inclined downwards, a plurality of blades form a shutter structure at the ventilation opening, and gaps are reserved between the adjacent blades to allow gas to pass through; when in the blocking state, the plurality of blades overlap each other to block the vent.

Further, a driving assembly is arranged at the ventilation opening and used for driving the blades to rotate around the rotating shaft.

Further, the driving assembly comprises a pull rope and a torsion spring, one end of the pull rope is fixed with the uppermost blade, the other end of the pull rope sequentially penetrates through holes in the plurality of blades downwards to form a force application end, the torsion spring is arranged at one rotating shaft in the uppermost position and is provided with two force bearing ends, one force bearing end is abutted with the blade, the other force bearing end is abutted with the side wall of the box body, and the adjacent blades are connected through connecting ropes; when the fan is in a ventilation state, the torsion spring drives one end of the blade, which is away from the rotating shaft, to rotate upwards to a set position; the force application end of the pull rope can be detachably connected with a positioning piece on the side wall of the box body.

The beneficial effects of one or more of the technical schemes are as follows:

in the scheme, a 4-20mA analog communication module, an RS485 communication module, a wireless communication module and a control circuit board are arranged in an inner cavity of a box body, and a connector is arranged at a wiring board and used for connecting an external signal wire. The controller in the scheme can be respectively communicated with the detectors in different communication modes through wireless connection or wired connection, and the wired connection part also comprises a 4-20mA analog quantity communication module and an RS485 communication module which are detachably connected; the arrangement mode greatly expands the application range of the controller and improves the applicability of the controller.

In the scheme, a semiconductor refrigerator is arranged at the box body; a vent is arranged on the side wall of the box body, a row of blades are rotatably arranged at the vent, and the vent is switched between a ventilation state and a blocking state through rotation of the blades. This arrangement allows the operator to choose the heat dissipation mode of the controller; when the dust in the external environment is more, the ventilation opening is closed, and the semiconductor refrigerator is used for cooling, so that the excessive dust accumulation in the box body can be avoided; when the dust in the external environment is less, the semiconductor refrigerator can be closed and heat is dissipated through the ventilation opening, so that the energy loss is reduced.

Drawings

Some embodiments of the utility model are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view showing the overall structure of the case according to embodiment 1 of the present utility model after the case is opened;

FIG. 2 is a schematic diagram of a display screen and a control circuit board disposed at a case cover in embodiment 1 of the present utility model;

fig. 3 is a schematic view of a battery provided at one side of a case in embodiment 1 of the present utility model;

fig. 4 is a schematic view showing a structure in which a semiconductor refrigerator, a vent, and the like are provided at a side portion of a case in embodiment 2 of the present utility model;

FIG. 5 is a schematic view showing the structure of the blade and the shaft according to embodiment 2 of the present utility model;

fig. 6 is an enlarged schematic view of the structure of the portion a in fig. 4.

List of reference numerals: 1. a display screen; 2. a case cover; 3. a lock; 4. a control circuit board; 5. a switching power supply; 6. an air switch; 7. a relay module; 8. 4-20mA analog communication module; 9. an RS485 communication module; 10. a wireless communication module; 11. a wiring identification board; 12. a case; 13. a signal wire waterproof lock; 14. waterproof lock of switch power line; 15. a storage battery; 16. a semiconductor refrigerator; 161. a cold end; 162. a hot end; 17. a vent; 18. a blade; 19. the second stress end; 20. a first stress end; 21. a rotating shaft; 22. a pull rope; 23. and (5) connecting ropes.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present utility model, which are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "center," "upper," "lower," "top," "bottom," "vertical," "horizontal," "inner," "outer," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

Example 1

As shown in fig. 1-3, the embodiment provides a flammable gas alarm controller, which comprises a box 12, wherein a relay module 7, a wireless communication module 10 and a control circuit board 4 are installed in an inner cavity of the box 12, and a 4-20mA analog communication module 8 and/or an RS485 communication module 9 are detachably installed in the box 12; the 4-20mA analog communication module 8, the RS485 communication module 9 and the control circuit board 4 of the box 12 are respectively communicated with the relay module 7, the 4-20mA analog communication module 8, the RS485 communication module 9 and the wireless communication module 10 through signal wires.

As a specific structural form, the case 12 is of a square structure, and the case 12 of the square structure includes a top plate, a bottom plate and three side plates, so that an opening is formed at one end of the case 12, and a case cover 2 is movably connected to the opening.

In other embodiments, the housing 12 may be other shapes, such as a cylindrical shape for the outer contour of the housing 12, so long as it has an opening that exposes its interior cavity.

The box cover 2 and the box body 12 are movably connected in a plurality of ways, for example, the box cover 2 is rotatably connected with the box body 12, a lock 3 is arranged between the box cover 2 and the box body 12, and the lock 3 realizes that the box cover 2 is rotated to be blocked. In other configurations, the cover 2 and the case 12 may be slidably connected or snap-connected, which may be set by those skilled in the art.

Specifically, in order to realize detachable installation, the 4-20mA analog communication module 8 and/or the RS485 communication module 9 can be installed in the inner cavity of the box body 12 in a bolt connection manner; the communication module is provided with a mounting hole, and a stud is arranged in the inner cavity of the box body 12 and is provided with a screw hole connected with a bolt.

Specifically, a relay module 7 is arranged in the box 12, the relay module 7 is controlled by the control circuit board 4, warning components such as a buzzer alarm and an alarm lamp can be arranged on the outer side of the box 12, and the on-off of a driving circuit at the buzzer alarm and the alarm lamp can be realized through the relay module 7.

As a specific structural form, the embodiment can be provided with a 4-20mA analog communication module 8 and an RS485 communication module 9; in other structural forms, two 4-20mA analog communication modules 8 can be reserved after being installed and disassembled.

The inner cavity of the box body 12 is provided with a wiring board which is respectively communicated with the relay module 7, the 4-20mA analog communication module 8 and the RS485 communication module 9 through signal wires, a connector is arranged at the wiring board, the signal input end of the connector penetrates out of the box body 12, and the connector is used for connecting external signal wires.

In order to facilitate the differentiation and limitation of the joints at the wiring board, a wiring identification board 11 is arranged at the wiring board; in order to achieve the waterproof effect, the joint is provided with a signal wire waterproof lock 13, and the structural form of the signal wire waterproof lock 13 and the implementation mode of the waterproof function can be selected by a person skilled in the art.

In this embodiment, the case body 12 has an opening, the opening is movably connected with the case cover 2, a notch is provided in the case cover 2, the display screen 1 is installed at the notch, and the control circuit board 4 is installed at the wall of the display screen 1 near the inner cavity of the case body 12.

In this embodiment, in order to supply power to the control circuit board 4, the alarm lamp, and other components, a switching power supply 5 is provided in the case 12, and the switching power supply 5 supplies power to the display screen 1 and the control circuit board 4 through wires, respectively. Preferably, the switching power supply 5 here employs a fire power supply.

In this embodiment, the switching power supply 5 communicates with the battery 15 via a power supply line, and an air switch 7 is mounted on the power supply line. Specifically, in order to save space, the storage battery 15 is disposed at an outer side wall of the case 12, and a waterproof connector of the switching power supply 5 wire is disposed at the side wall of the case 12 for connecting a power line extending from the storage battery 15.

Working principle: when the device is used, the number of the 4-20mA analog communication modules 8 and the RS485 communication modules 9 in the box 12 is arranged according to the communication types and the number of the detectors needing to communicate; and the installation of the whole device is completed. The plurality of detectors are in communication with the controller via signal lines or with the controller via the wireless communication module 10.

Example 2

As shown in fig. 4 to 6, this embodiment is basically the same as embodiment 1 in structure, except that: the box 12 has a semiconductor refrigerator 16 therein, with the cold end 161 of the semiconductor refrigerator 16 being located in the interior cavity of the box 12 and the hot end 162 of the semiconductor refrigerator 16 being located outside the box. The side wall of the box body 12 is provided with a vent hole 17, a row of blades 18 are rotatably arranged at the vent hole 17, the rotating axes of the blades 18 are parallel to each other, one end of each blade 18 is rotatably arranged at the vent hole 17 through a rotating shaft 21, and the other end of each blade 18 can synchronously rotate to enable the vent hole 17 to have a ventilation state and a blocking state; when in a ventilation state, the other ends of the blades 18 are inclined downward, the plurality of blades 18 form a louver structure at the ventilation opening 17, and gaps are formed between adjacent blades 18 to allow gas to pass through; when in the blocking state, the plurality of vanes 18 overlap each other to block the vent 17.

In this embodiment, a drive assembly is mounted to the vent 17 for driving the vane 18 in rotation about the axis of rotation.

In this embodiment, the driving assembly includes a pull rope 22 and a torsion spring, one end of the pull rope 22 is fixed with the uppermost blade 18, the other end sequentially passes through the through holes of the plurality of blades 18 downwards to form a force application end, the torsion spring is mounted at one rotation shaft 21 at the uppermost, the torsion spring has two stress ends, one stress end (i.e. a second stress end) is abutted with the blade 18, the other stress end (i.e. a first stress end) is abutted with the side wall of the box 12, and adjacent blades are connected through a connecting rope 23; when the fan is in a ventilation state, the torsion spring drives one end of the blade, which is away from the rotating shaft, to rotate upwards to a set position; the force application end of the pull rope can be detachably connected with a positioning piece on the side wall of the box body.

In this embodiment, the lower end of the pull cord 22 is provided with a hook (not shown in the figure), the positioning member adopts a buckle, and the hook can be buckled with the hook.

When the pull rope 22 is pulled downwards, the uppermost end of the pull rope is stressed to enable one blade at the uppermost part to rotate downwards, and then the blades are sequentially rotated to a state that an included angle between the blades and the side wall of the box body is minimum in the sequence from top to bottom, so that the ventilation opening is blocked; in the pulling-down process of the pull rope, the torsion spring accumulates elastic potential energy.

When the pull rope is loosened, the torsion spring releases elastic potential energy, one blade at the uppermost part rotates upwards by a set angle, and then the connecting rope sequentially pulls the other blades to rotate upwards by the set angle, and gaps are reserved between the adjacent blades, so that the ventilation opening is in a ventilation state.

As another specific structural form of the driving assembly, the driving assembly may adopt a combination of a sprocket and a chain, a sprocket is coaxially fixed at an end portion of each rotating shaft 21, the chain is sleeved outside the sprocket, one of the sprockets is driven by a stepping motor, and the stepping motor is powered by a storage battery 15 and is controlled to start, stop and rotate by a control circuit board 4.

Working principle: when heat dissipation is required, an operator judges the degree of cleanliness of the external air, and if the external dust is more, the driving blade 18 rotates to a blocking state, and the temperature inside the controller is reduced by the semiconductor refrigerator 16. If the air cleanliness of the external environment is high, the driving blades 18 rotate to an open state, and the heat dissipation inside the controller is realized by using an air convection mode.

Thus far, the technical solution of the present utility model has been described in connection with the foregoing preferred embodiments, but it will be readily understood by those skilled in the art that the scope of the present utility model is not limited to the above-described preferred embodiments. The technical solutions in the above preferred embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present utility model, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present utility model will fall within the protection scope of the present utility model.

Claims

1. The combustible gas alarm controller is characterized by comprising a box body, wherein a relay module, a wireless communication module and a control circuit board are arranged in the inner cavity of the box body, and a 4-20mA analog communication module and/or an RS485 communication module are detachably arranged in the box body; the control circuit board is respectively communicated with the relay module, the 4-20mA analog communication module, the RS485 communication module and the wireless communication module through signal wires;

the intelligent power distribution box is characterized in that a wiring board is arranged in the inner cavity of the box body and is respectively communicated with the relay module, the 4-20mA analog communication module and the RS485 communication module through signal wires, a connector is arranged at the wiring board, a signal input end of the connector penetrates out of the box body outwards, and the connector is used for being connected with external signal wires.

2. The flammable gas alarm controller of claim 1, wherein the box body is provided with an opening, a box cover is movably connected to the opening, a notch is formed in the box cover, a display screen is installed at the notch, and the control circuit board is installed at a wall surface of the display screen, which is close to an inner cavity of the box body.

3. The flammable gas alarm controller of claim 2, wherein the enclosure has a switching power supply therein that provides power to the display and control circuit board, respectively, via wires.

4. A flammable gas alarm controller according to claim 3 wherein the switching power supply communicates with the storage battery via a power supply line, and an air switch is mounted on the power supply line.

5. The flammable gas alarm controller of claim 1, wherein the box has a semiconductor refrigerator therein with a cold end in an interior cavity of the box and a hot end outside the box;

the side wall of the box body is provided with a vent, a row of blades are rotatably arranged at the vent, the rotating axes of a plurality of blades are parallel to each other, one end of each blade is rotatably arranged at the vent through the rotating shaft, and the other end of each blade can synchronously rotate to enable the vent to be in a ventilation state and a blocking state;

when the air conditioner is in a ventilation state, the other ends of the blades are inclined downwards, a plurality of blades form a shutter structure at the ventilation opening, and gaps are reserved between the adjacent blades to allow gas to pass through;

when in a blocking state, the blades are mutually overlapped to block the ventilation opening.

6. The flammable gas alarm controller of claim 5, wherein a drive assembly is mounted to the vent for driving the vanes to rotate about the axis of rotation.

7. The combustible gas alarm controller of claim 6 wherein the drive assembly comprises a pull rope and a torsion spring, wherein one end of the pull rope is fixed with the uppermost blade, the other end of the pull rope sequentially passes through holes in a plurality of blades downwards to form a force application end, the torsion spring is arranged at one rotating shaft in the uppermost part, the torsion spring is provided with two force application ends, one force application end is abutted with the blade, the other force application end is abutted with the side wall of the box body, and adjacent blades are connected through connecting ropes;

when the fan is in a ventilation state, the torsion spring drives one end of the blade, which is away from the rotating shaft, to rotate upwards to a set position; the force application end of the pull rope can be detachably connected with the positioning piece on the side wall of the box body.

8. The flammable gas alarm controller of claim 7, wherein the force application end of the pull rope is provided with a hook, the positioning piece adopts a buckle, and the hook can be buckled with the hook.