Inert gas protection room ventilation and air exchange device

Abstract

The utility model discloses an inert gas protection room ventilation device, which belongs to the field of electrical room ventilation and comprises an inflation component and a ventilation component which are arranged in an electrical room, the inflation component comprises a gas storage tank arranged outside the electrical room, and the gas storage tank is communicated with a delivery pipe. The end, away from the gas storage tank, of the conveying pipe penetrates through the electrical room, extends into a floor interlayer of the electrical room and is used for conveying inert gas into the electrical room, the ventilation assembly comprises at least two electric closed valves, and the electric closed valves fixedly penetrate through the inner wall of the electrical room. Intelligent design is carried out, real-time detection is carried out through the detection assembly, so that environmental air safety is guaranteed, working safety of personnel is improved, meanwhile, interlocking is carried out, it is guaranteed that a fireproof door of an electrical room is safely opened, automatic supplement of inert gas in the electrical room can be achieved, and safety of the electrical room is improved. Therefore, the problems that ventilation is inconvenient, detection is not intelligent and efficiency is low are better solved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation in electrical rooms, and is a ventilation device for rooms protected by inert gas. Background Technology

[0002] The electrical room—specifically the battery room at the Zhongju substation—is dedicated to storing batteries. Since battery charging produces hydrogen gas, and hydrogen's explosive limits are 4-75% VOL, there is a risk of hydrogen explosion within this room. Currently, to improve the safety of electrical rooms, inert gases are typically filled in. Inert gases are chemically stable and do not readily react with other substances; nitrogen, for example, is widely used in this scenario. Filling the room with inert gas effectively dilutes the hydrogen concentration, keeping it well below the lower explosive limit, significantly reducing the risk of a hydrogen explosion. When maintenance personnel need to enter the electrical room to inspect equipment, the inert gas concentration must be reduced to a safe level using ventilation and exhaust systems before entry.

[0003] Existing ventilation and exhaust systems typically involve installing exhaust fans to circulate air within the room. For example, there is a ventilation and dust removal device for an electrical engineering computer room, with prior art publication number CN213306039U.

[0004] However, the existing technology has the following problems when used: when personnel enter to operate, they need to wait for the inert gas concentration to drop to a safe and reasonable range. However, the gas content in the room still needs to be manually detected, which not only affects the work efficiency of personnel, but also has the problem of low detection accuracy and inability to guarantee the safety of the ambient air. Based on this, the present invention provides an inert gas protection room ventilation device. Utility Model Content

[0005] Therefore, this utility model provides an inert gas-protected room ventilation device to solve the problems in the prior art where manual detection of gas content in the room not only affects the work efficiency of personnel, but also has low detection accuracy and cannot guarantee the safety of ambient air.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An inert gas protection room ventilation device includes an inflation component and a ventilation component located in an electrical room. The inflation component includes a gas storage tank placed outside the electrical room, with a delivery pipe connected to the gas storage tank. The end of the delivery pipe away from the gas storage tank passes through the electrical room and extends into the floor interlayer of the electrical room for supplying inert gas into the electrical room. The ventilation component includes at least two electrically operated airtight valves, which are fixedly installed through the inner wall of the electrical room. Each of the two electrically operated airtight valves is fixedly equipped with a detachable wall-mounted exhaust fan. An axial flow fan is fixedly installed on the inner wall of the electrical room. A detection component is also installed on the inner wall of the electrical room. A control component is installed in the corridor of the electrical room.

[0008] Furthermore, the delivery pipe is fixedly equipped with a manual ball valve, an explosion-proof electric valve, and multiple air outlets, all of which extend through the floor of the electrical room.

[0009] Furthermore, the detection components include an oxygen detector, a video monitor, a pressure transmitter, and a combustible gas detector;

[0010] The number of oxygen detectors and video monitors is set to three, distributed on the inner wall and outer wall of the electrical room, for detecting and monitoring the oxygen concentration inside and outside the electrical room. The number of pressure transmitters and combustible gas detectors is set to one, both fixed on the inner wall of the electrical room, for detecting the pressure and combustible gas content inside the electrical room.

[0011] Furthermore, the electrical room is also equipped with a fire door, and an access control system for controlling the opening and closing of the fire door is fixed on the corridor wall of the electrical room. Above the fire door, there is also an inert gas exceeding the standard indicator sign, which is fixed on the outer wall of the electrical room to remind personnel not to enter.

[0012] Furthermore, the control component includes a PLC control cabinet, which is installed on the inner wall of the electrical room corridor. The PLC control cabinet is connected to a gas storage tank, an electric airtight valve, a wall-mounted exhaust fan, an explosion-proof electric valve, an oxygen detector, a video monitor, a pressure transmitter, a combustible gas detector, a fire door, and an access control system via electrical wires.

[0013] Furthermore, both electrically operated airtight valves are connected to exhaust steel pipes.

[0014] Furthermore, one of the exhaust pipes is connected to an air pump at its bottom end, and a filter box is connected to the air outlet of the air pump. The filter box is connected to an air storage tank via a hose, and the air pump is electrically connected to the PLC control cabinet.

[0015] Furthermore, the filter box is equipped with two activated carbon plates arranged in a front-to-back pattern to filter impurities in the inert gas.

[0016] This utility model has the following advantages:

[0017] This utility model features an intelligent design. Through real-time detection components, it ensures environmental air safety and improves the safety of personnel working. It also features interlocking to ensure the safe opening of the fire door in the electrical room and can automatically replenish the inert gas in the electrical room, thus better solving the problems of inconvenient ventilation, unintelligent detection, and slow efficiency.

[0018] The gas in the electrical room is filtered by an air pump and a filter box. After the gas passes through two activated carbon plates in the filter box, clean inert gas is obtained. The gas is then transported back to the gas storage tank. This not only avoids pollution caused by direct emission of inert gas, but also allows for the recycling and reuse of inert gas, thus playing a role in energy conservation and environmental protection. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2 Top view of the electrical room provided by this utility model;

[0023] Figure 3 A schematic diagram of the air pump and filter box provided by this utility model;

[0024] Figure 4 A cross-sectional view of the filter box provided by this utility model;

[0025] Figure 5 The logic diagram provided for this utility model.

[0026] In the diagram: 1. Electrical room; 2. Inflatable assembly; 3. Ventilation assembly; 4. Detection assembly; 5. Control assembly; 6. Manual ball valve; 7. Explosion-proof electric valve; 8. Gas outlet; 9. Fire door; 10. Access control system; 11. Inert gas exceedance indicator; 12. Exhaust pipe; 13. Air pump; 14. Filter box; 15. Activated carbon board;

[0027] 201. Gas storage tank; 202. Delivery pipe;

[0028] 301. Electric airtight valve; 302. Wall-mounted exhaust fan; 303. Axial flow fan;

[0029] 401. Oxygen detector; 402. Video monitor; 403. Pressure transmitter; 404. Combustible gas detector;

[0030] 501. PLC control cabinet. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Refer to the instruction manual appendix Figure 1-4 This utility model provides an inert gas protection room ventilation device, including an inflation component 2 and a ventilation component 3 located in an electrical room 1. The inflation component 2 includes a gas storage tank 201 placed outside the electrical room 1. A delivery pipe 202 is connected to the gas storage tank 201. The end of the delivery pipe 202 away from the gas storage tank 201 passes through the electrical room 1 and extends into the floor interlayer of the electrical room 1 for delivering inert gas into the electrical room 1. The ventilation component 3 includes at least two electrically operated airtight valves 301. The electrically operated airtight valves 301 are fixedly installed through the inner wall of the electrical room 1. A detachable wall-mounted exhaust fan 302 is fixedly installed on each of the two electrically operated airtight valves 301. An axial flow fan 303 is fixedly installed on the inner wall of the electrical room 1. A detection component 4 is also installed on the inner wall of the electrical room 1.

[0033] The delivery pipe 202 is fixedly equipped with a manual ball valve 6, an explosion-proof electric valve 7, and multiple air outlets 8, all of which pass through the floor of the electrical room 1.

[0034] The detection component 4 includes an oxygen detector 401, a video monitor 402, a pressure transmitter 403, and a combustible gas detector 404. There are three oxygen detectors 401 and three video monitors 402, distributed on the inner and outer walls of the electrical room 1, for detecting and monitoring the oxygen concentration inside and outside the electrical room 1. There is one pressure transmitter 403 and one combustible gas detector 404, both fixed to the inner wall of the electrical room 1, for detecting the pressure and combustible gas content inside the electrical room 1.

[0035] The control component 5 includes a PLC control cabinet 501. The PLC control cabinet 501 is a control device that integrates a PLC (Programmable Logic Controller) and related electrical components. It has functions such as overload, short circuit, and phase loss protection, and can realize equipment automation and process automation control. Therefore, it is suitable for the intelligent control of this utility model. The PLC control cabinet 501 is installed on the inner wall of the corridor of the electrical room 1. The PLC control cabinet 501 is connected to the gas storage tank 201, electric airtight valve 301, wall exhaust fan 302, explosion-proof electric valve 7, oxygen detector 401, video monitor 402, pressure transmitter 403, combustible gas detector 404, fire door 9 and access control 10 through wires.

[0036] Electrical room 1 is also equipped with a fire door 9. Access control 10 for controlling the opening and closing of the fire door 9 is fixed on the corridor wall of electrical room 1. Above the fire door 9, there is also an inert gas exceeding the standard indicator 11. The inert gas exceeding the standard indicator 11 is fixed on the outer wall of electrical room 1 to remind personnel not to enter.

[0037] In actual use, the delivery pipe 202 is first laid in the floor interlayer of the electrical room 1, and then the entire device is automatically controlled by the PLC control cabinet 501.

[0038] Specifically, during inflation: the fire door 9 of electrical room 1 is closed, the PLC control cabinet 501 starts the explosion-proof electric valve 7 to open, allowing the inert gas in the gas tank 201 to be delivered into electrical room 1 through multiple gas outlets 8 on the delivery pipe 202. At this time, the access control 10 is locked and the inert gas exceedance indicator 11 lights up to warn personnel not to enter. When the oxygen detector 401 detects that the oxygen concentration in electrical room 1 is lower than 10%, or the pressure transmitter 403 detects that the pressure in electrical room 1 is higher than 100Pa, the explosion-proof electric valve 7 closes and inflation stops. Conversely, if the oxygen concentration and pressure are not within the specified range, inflation will continue.

[0039] The electrical room 1 corridor is equipped with a control component 5, which includes a PLC control cabinet 501. The PLC control cabinet 501 is installed on the wall inside the electrical room 1 corridor. The PLC control cabinet 501 is connected to the gas storage tank 201, the electric airtight valve 301, the wall exhaust fan 302, the explosion-proof electric valve 7, the oxygen detector 401, the video monitor 402, the pressure transmitter 403, the combustible gas detector 404, the fire door 9, and the access control system 10 via wires.

[0040] During the detection phase: PLC control cabinet 501 automatically closes the explosion-proof electric valve 7, activates the electric airtight valve 301 and the wall-mounted exhaust fan 302. The wall-mounted exhaust fan 302 draws in air, thereby accelerating air circulation in the electrical room 1 and achieving ventilation. When the oxygen detector 401 detects that the oxygen concentration in the electrical room 1 is higher than 20% and meets the safety standard, the access control 10 unlocks. Only then can personnel open the fire door 9 through access control 10 and enter the electrical room 1 to work. This embodiment automatically controls the entire device through PLC control cabinet 501, thus better solving the problems of inconvenient ventilation, unintelligent detection, and slow efficiency.

[0041] Refer to the instruction manual appendix Figure 1-5 Both electric airtight valves 301 are connected to exhaust steel pipes 12.

[0042] One of the exhaust pipes 12 is connected to an air pump 13 at its bottom end. A filter box 14 is connected to the air outlet of the air pump 13. The filter box 14 is connected to the air storage tank 201 through a hose. The air pump 13 is electrically connected to the PLC control cabinet 501.

[0043] The filter box 14 is equipped with two activated carbon plates 15 arranged in a front-to-back pattern to filter impurities in the inert gas.

[0044] By connecting an air pump 13 and a filter box 14 through one of the exhaust pipes 12, the air pump 13 draws gas from the electrical room 1. After the gas is filtered by two activated carbon plates 15 in the filter box 14, the dust and impurities in the gas are retained in the filter box 14, resulting in clean gas containing inert gas. The gas is then transported to the gas storage tank 201 through a hose. This not only avoids pollution caused by direct emission of inert gas, but also allows for the recycling and reuse of inert gas, thus achieving energy conservation and environmental protection.

[0045] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An apparatus for ventilating a room protected by an inert gas, characterized in that: The air charging assembly (2) and the ventilation assembly (3) are arranged in the electrical room (1). The air charging assembly (2) comprises a gas storage tank (201) arranged outside the electrical room (1), and a conveying pipe (202) is communicated with the gas storage tank (201), and the conveying pipe (202) penetrates the electrical room (1) and extends to the floor interlayer of the electrical room (1) at one end away from the gas storage tank (201), and is used for conveying inert gas into the electrical room (1). The ventilation assembly (3) comprises at least two electric sealing valves (301), the electric sealing valves (301) are fixedly arranged on the inner wall of the electrical room (1), and a detachable wall type exhaust fan (302) is arranged on each electric sealing valve (301), and an axial flow fan (303) is arranged on the inner wall of the electrical room (1). The inner wall of the electrical room (1) is further provided with a detection assembly (4), and the corridor of the electrical room (1) is provided with a control assembly (5).

2. The ventilation device for an inert gas shield room according to Claim 1, wherein: The conveying pipe (202) is fixedly provided with a manual ball valve (6), an explosion-proof electric valve (7) and a plurality of gas outlets (8), and the plurality of gas outlets (8) penetrate the floor of the electrical room (1).

3. The ventilation device for an inert gas shield room according to Claim 1, wherein: The detection assembly (4) comprises an oxygen detector (401), a video monitor (402), a pressure transmitter (403) and a combustible gas detector (404). The number of the oxygen detector (401) and the video monitor (402) is three, three oxygen detectors (401) and three video monitors (402) are arranged on the inner wall of the electrical room (1) and the outer wall of the electrical room (1), which are used for detecting the oxygen concentration in the electrical room (1) and the outside of the electrical room (1) and monitoring, the number of the pressure transmitter (403) and the combustible gas detector (404) is one, and the pressure transmitter (403) and the combustible gas detector (404) are fixed on the inner wall of the electrical room (1), which are used for detecting the pressure and the combustible gas content in the electrical room (1).

4. The ventilation device for an inert gas shield room according to claim 2, wherein: The electrical room (1) is further provided with a fireproof door (9), a door access (10) for controlling the opening and closing of the fireproof door (9) is arranged on the wall of the corridor of the electrical room (1), and an inert gas overproof indicator (11) is arranged above the fireproof door (9), the inert gas overproof indicator (11) is fixed on the outer wall of the electrical room (1), which is used for reminding personnel to prohibit entry.

5. The ventilation device for an inert gas shield room according to claim 4, wherein: The control assembly (5) comprises a PLC control cabinet (501), the PLC control cabinet (501) is arranged on the inner wall of the corridor of the electrical room (1), and the PLC control cabinet (501) is connected with the gas storage tank (201), the electric sealing valve (301), the wall type exhaust fan (302), the explosion-proof electric valve (7), the oxygen detector (401), the video monitor (402), the pressure transmitter (403), the combustible gas detector (404), the fireproof door (9) and the door access (10) through wires.

6. The ventilation device for an inert gas shield room according to Claim 1, wherein: The two electric sealing valves (301) are communicated with exhaust steel pipes (12).

7. The ventilation device for an inert gas shield room according to claim 6, wherein: One of the exhaust steel pipe (12) bottom end is connected with air pump (13), the air outlet of air pump (13) is connected with filter box (14), the filter box (14) is communicated with gas storage tank (201) through hose, the air pump (13) is electrically connected with PLC control cabinet (501).

8. The ventilation device for an inert gas shield room according to claim 7, wherein: The inside of filter box (14) is fixedly provided with two front and rear distributed activated carbon plates (15), which are used for filtering impurities in inert gas.

Images