Railway machine room comprehensive protection cabinet

Abstract

The utility model discloses a comprehensive protection cabinet for a railway machine room, which comprises a cabinet body, and the front side of the cabinet body is rotatably connected with a cabinet door; a ventilation and dust prevention mechanism is arranged in the cabinet body and the cabinet door, the ventilation and dust prevention mechanism comprises a ventilation opening, an activated carbon sponge and a fixing frame, and the ventilation opening and the activated carbon sponge are tightly attached; an execution mechanism is arranged in the cabinet body, the execution mechanism comprises a ground potential counterattack detection unit, a power supply loop, a power frequency current transformer, a lightning current transformer and a measurement loop, the power frequency current transformer and the lightning current transformer are installed on the power supply loop, and the power supply loop is installed on the cabinet body. According to the comprehensive protection cabinet for the railway machine room, the authenticity of a monitoring result is fully guaranteed, impact details are accurately reflected, ventilation and dustproof effects can be guaranteed at the same time, the situation that operation is affected by too much dust or too high temperature on parts is avoided, the interior can be illuminated, the illumination height is convenient to adjust, and flexibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of railways, in particular to a comprehensive protection cabinet for a railway machine room. Background Art

[0002] The railway machine room integrated protection cabinet is a device used for machine room management and protection in the railway field. Railway transportation requires the support of the communication machine room. The machine room is sensitive to the electromagnetic environment due to its complex and diverse internal equipment. It is easily affected by surge voltages generated by lightning strikes and switch operations. In order to ensure the normal use of the machine room, it is necessary to use a comprehensive protection cabinet for maintenance and management to improve the safety performance of the railway. The functions of the protection cabinet include leakage protection and ground potential counterattack.

[0003] There are usually two forms of ground potential counter-attack: A. When lightning current flows into the earth, due to the existence of grounding resistance, a large voltage drop is generated, which raises the ground potential and reversely breaks down the equipment; B. Between two ground grids, due to insufficient safety distance, one of the ground grids receives lightning current and generates high potential, which then counter-attacks the ground grid that has not been struck by lightning, causing the grounding system to have dangerous voltage.

[0004] This ground potential rebound caused by improper grounding technology can cause the entire network system equipment to be destroyed. The transient high ground potential not only endangers the equipment in the building, but also endangers the equipment in adjacent buildings.

[0005] The ground potential counter-attack can induce a counter-attack voltage of several KV to tens of KV or hundreds of KV. This counter-attack will be transmitted into the room or spread to a larger indoor area in the form of waves along the neutral line, protective grounding wire and various forms of grounding wires of the power system, causing large-scale damage. Therefore, we propose a comprehensive protection cabinet for railway machine room to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a railway machine room integrated protection cabinet to solve the problem that the current railway machine room integrated protection cabinet grounding technology is improperly handled and causes the ground potential counter-attack, resulting in the destruction of all the equipment of the entire network system. The transient high potential of the ground potential not only endangers the equipment in the building, but also endangers the equipment in the adjacent buildings. The ground potential counter-attack can induce a counter-attack voltage of several KV to tens of KV to hundreds of KV. This counter-attack will be transmitted into the room or spread to a larger indoor range in the form of waves along the neutral line of the power system, the protective grounding wire and various forms of grounding wires, causing large-scale damage.

[0007] To achieve the above purpose, the utility model provides the following technical solution: a railway machine room comprehensive protection cabinet, comprising:

[0008] A cabinet body, the front side of which is rotatably connected to a cabinet door;

[0009] Also includes:

[0010] A ventilation and dust prevention mechanism is provided in the cabinet body and the cabinet door, wherein the ventilation and dust prevention mechanism comprises a vent, an activated carbon sponge and a fixing frame, and the vent and the activated carbon sponge are closely fitted;

[0011] An actuator is arranged in the cabinet, wherein the actuator includes a ground potential counter-attack detection unit, a power supply circuit, a power frequency current transformer, a lightning current transformer and a measurement circuit, wherein the power frequency current transformer and the lightning current transformer are installed on the power supply circuit, and the power supply circuit is installed on the cabinet;

[0012] A lighting mechanism is arranged on the inner front side of the cabinet, wherein the lighting mechanism comprises a fixing plate, a slide groove, a positioning hole, a connecting block and a lighting lamp, wherein the connecting block is connected to the slide groove and the positioning hole by a slot, and the positioning holes are evenly spaced on the slide groove.

[0013] Preferably, ventilation holes are provided at the bottom of the cabinet body and the cabinet door, and the ventilation holes are distributed in an array. Fixing frames are welded to the inner sides of the cabinet body and the ventilation holes, and the internal slots of the fixing frames are connected to activated carbon sponges.

[0014] Preferably, an exhaust fan is installed above the cabinet, and a mounting base is installed inside the cabinet.

[0015] Preferably, a fixing plate is fixed to the inner wall of the cabinet, and the fixing plates are symmetrically distributed on the left and right, a sliding groove is provided inside the fixing plate, and a positioning hole is integrally provided on the outer side of the sliding groove.

[0016] Preferably, a ground potential back-strike detection unit and a measurement circuit are installed on the front side of the mounting base, and the ground potential back-strike detection unit is combined with a power frequency current transformer and a lightning current transformer to form a detection system.

[0017] Preferably, a positioning hole is slidably connected inside the slide groove, and a lighting lamp is installed inside the positioning hole.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the railway machine room integrated protection cabinet fully guarantees the authenticity of the monitoring results, accurately reflects the impact details, can simultaneously ensure ventilation and dustproof effects, avoids excessive dust on parts or excessive temperature affecting operation, can illuminate the interior, and is convenient to adjust the lighting height, with strong flexibility;

[0019] 1. It is equipped with a ground potential counter-attack detection unit, a power frequency current transformer and a lightning current transformer. The ground potential counter-attack detection unit, the power supply circuit, the power frequency current transformer, the lightning current transformer and the combination constitute an actuator to fully ensure the authenticity of the monitoring results and accurately reflect the impact details;

[0020] 2. Activated carbon sponge, fixing frame and exhaust fan are provided. By connecting the activated carbon sponge and the fixing frame slot, the activated carbon sponge is tightly attached to the inside of the vent. The fixing frame is fixed on the lower inside of the cabinet body and the cabinet door, which can ensure ventilation and dustproof effects at the same time, and avoid excessive dust on the parts or high temperature affecting the operation;

[0021] 3. A slide groove, a connecting block and a lighting lamp are provided. A slide groove and a positioning hole are opened in the fixed plate. The lighting lamp is installed on the fixed plate through the connecting block, which can illuminate the interior, facilitate the adjustment of the lighting height, and has strong flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the utility model from a side view;

[0024] Figure 3 This is a schematic diagram of the overall structure of the utility model when the cabinet door is in a closed state;

[0025] Figure 4 This is a schematic diagram of the overall structure of the ventilation and dust prevention mechanism of the utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the lighting mechanism of the utility model;

[0027] Figure 6 It is a schematic diagram of the process of the utility model.

[0028] In the figure: 1. cabinet body; 2. cabinet door; 3. vent; 4. activated carbon sponge; 5. fixing bracket; 6. exhaust fan; 7. mounting base; 8. ground potential back-strike detection unit; 9. power supply circuit; 10. power frequency current transformer; 11. fixing plate; 12. slide groove; 13. positioning hole; 14. connecting block; 15. lighting lamp; 16. measuring circuit; 17. lightning current transformer. DETAILED DESCRIPTION

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1-6 , the present utility model provides a technical solution: a comprehensive protection cabinet for a railway machine room, including: a cabinet body 1, a cabinet door 2, a ventilation opening 3, an activated carbon sponge 4, a fixing frame 5, an exhaust fan 6, a mounting base 7, a ground potential counterattack detection unit 8, a power supply circuit 9, a power frequency current transformer 10, a fixing plate 11, a sliding groove 12, a positioning hole 13, a connecting block 14, a lighting lamp 15, a measurement circuit 16 and a lightning current transformer 17; Specific embodiments

[0031] The improper grounding technology treatment of the existing comprehensive protection cabinet for railway machine rooms causes the counterattack of the ground potential, resulting in the complete destruction of all the equipment in the entire network system. To solve this technical defect, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 6 and Figure 6 shown, the actuator of the ground potential counterattack monitoring function includes a ground potential counterattack detection unit 8, a power supply circuit 9, a power frequency current transformer 10, a lightning current transformer 17 and a measurement circuit 16. As shown in

[0032] shown, the power frequency current transformer 10 and the lightning current transformer 17 collect the power frequency current and lightning current on the connection path between the grounding busbar and the ground grid through the principle of electromagnetic induction. After the conversion between the primary / secondary windings, the current analog signal is provided to the ground potential counterattack detection unit 8. The ground potential counterattack detection unit 8 is responsible for filtering and sampling the analog signal, forming a digital signal, storing and performing relevant calculations, and automatically alarming when the counterattack limit is exceeded. Specific embodiments

[0033] As shown in Figure 1 -Attached Figure 4 As shown in , when it is necessary to ensure ventilation and dust prevention of the cabinet 1 at the same time, open the cabinet door 2, and then put the activated carbon sponge 4 into the fixing frame 5, so that the activated carbon sponge 4 and the fixing frame 5 are connected by a slot, and the fixing frame 5 is fixed to the inner side of the cabinet 1 and the cabinet door 2. The cabinet 1 and the cabinet door 2 are both provided with vents 3 in an array at the bottom, close the cabinet door 2, and turn on the exhaust fan 6 installed above the cabinet 1. External air enters the cabinet 1 through the vents 3 and is exhausted through the exhaust fan 6, thereby increasing air circulation and cold and heat exchange and ensuring the heat dissipation effect. When the air is circulating, the vents 3 and the activated carbon sponge 4 fit closely to prevent dust from entering the cabinet 1 from the vents 3 and ensuring the dust prevention effect. Specific embodiments

[0034] As attached Figure 1 , Attachment Figure 2 and attached Figure 5 As shown in the figure, a fixing plate 11 is fixed symmetrically on the inner wall of the cabinet 1, and a slide groove 12 is opened inside the fixing plate 11. The connecting block 14 is placed in the slide groove 12, and the connecting block 14 connected to the slide groove 12 is slid along the slide groove 12. The height of the lighting lamp 15 fixed on the inner side of the connecting block 14 is adjusted, and the lighting lamp 15 is adjusted to a suitable position. Then, the connecting block 14 and the positioning hole 13 are connected by the slot, and the lighting lamp 15 is fixed. The positioning holes 13 are evenly spaced on the slide groove 12, and the lighting lamp 15 can be installed at different heights. The lighting lamp 15 illuminates the interior of the cabinet 1, which is convenient for repairing the parts in the cabinet 1.

[0035] This is the entire working process of the railway machine room integrated protection cabinet. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0036] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A railway machine room integrated protection cabinet, comprising: A cabinet body (1), wherein a cabinet door (2) is rotatably connected to the front side of the cabinet body (1); It is characterized by further comprising: A ventilation and dust prevention mechanism is provided in the cabinet body (1) and the cabinet door (2), wherein the ventilation and dust prevention mechanism comprises a ventilation port (3), an activated carbon sponge (4) and a fixing frame (5), and the ventilation port (3) and the activated carbon sponge (4) are tightly fitted; An actuator is arranged in the cabinet (1), wherein the actuator comprises a ground potential back-strike detection unit (8), a power supply circuit (9), a power frequency current transformer (10), a lightning current transformer (17) and a measurement circuit (16), wherein the power frequency current transformer (10) and the lightning current transformer (17) are mounted on the power supply circuit (9), and the power supply circuit (9) is mounted on the cabinet (1); The cabinet (1) is provided with a lighting mechanism on the inner front side, wherein the lighting mechanism comprises a fixing plate (11), a slide groove (12), a positioning hole (13), a connecting block (14) and a lighting lamp (15); the connecting block (14) is connected to the slide groove (12) and the positioning hole (13) by a slot, and the positioning holes (13) are evenly spaced on the slide groove (12).

2. A railway machine room integrated protection cabinet according to claim 1, characterized in that: Ventilation holes (3) are provided below the cabinet body (1) and the cabinet door (2), and the ventilation holes (3) are arranged in an array. Fixing frames (5) are welded to the inner sides of the cabinet body (1) and the ventilation holes (3), and an activated carbon sponge (4) is connected to the internal slot of the fixing frame (5).

3. The railway machine room integrated protection cabinet according to claim 1, characterized in that: An exhaust fan (6) is installed above the cabinet (1), and a mounting base (7) is installed inside the cabinet (1).

4. The railway machine room integrated protection cabinet according to claim 1, characterized in that: A fixing plate (11) is fixed to the inner wall of the cabinet (1), and the fixing plates (11) are symmetrically distributed on the left and right. A sliding groove (12) is provided inside the fixing plate (11), and a positioning hole (13) is integrally provided on the outer side of the sliding groove (12).

5. The railway machine room integrated protection cabinet according to claim 3 is characterized by: A ground potential back-strike detection unit (8) and a measurement circuit (16) are installed on the front side of the mounting base (7); the ground potential back-strike detection unit (8) is combined with a power frequency current transformer (10) and a lightning current transformer (17) to form a detection system.

6. The railway machine room integrated protection cabinet according to claim 4, characterized in that: The interior of the slide groove (12) is slidably connected to a positioning hole (13), and an illumination lamp (15) is installed inside the positioning hole (13).

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