A cabinet with inflatable sealing structure and protection method of the cabinet

Abstract

The application provides a kind of cabinet with inflatable sealing structure, installed on rail transit train body, comprising: cabinet fixed part is connected with the train body by first sealing structure, cabinet fixed part includes cabinet body and top fixed plate;Cabinet movable part is connected with cabinet fixed part by second sealing structure, cabinet movable part includes top maintenance plate and cabinet door;Top fixed plate is further provided with gas inlet valve for passing into the interior of cabinet and exhaust valve for discharging gas.The cabinet with inflatable sealing structure provided by the application seals the installation gap of each part of the cabinet by using multiple sealing structures, and isolates the interior of the cabinet from the outside as much as possible.Meanwhile, by setting the air inlet valve and the exhaust valve, the cabinet interior forms a positive pressure space compared to the outside while achieving air circulation and heat dissipation, reducing the interference of external environmental factors on the internal working elements, improving the stability of the equipment operation, and ensuring the safe operation of the train.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of screen cabinet with inflatable sealing structure and the screen cabinet protection method, in particular, rail transit vehicle screen cabinet sealing field. BACKGROUND

[0002] With the rapid development of rail transit industry, vehicle also upgrades to the direction of digitalization, intelligentization, full automation, and screen cabinet as the carrier of signal, control, power supply and other precision processing equipment, is related to the operation safety of the whole train. As far as possible, external factors should be avoided to influence its working state, and at the same time, the vehicle can maintain certain operation ability in the event of equipment failure or emergency.

[0003] In the prior art, more focus on screen cabinet safety problem is on temperature heat dissipation, and under the condition that screen cabinet airtightness can isolate external air suspended matter interference, the technical difficulty that screen cabinet equipment requires good operability and maintainability is also met, and there is no corresponding solution technical means at present. SUMMARY

[0004] The technical problem to be solved by the present application is that, in view of the deficiencies of the prior art, a closed structure of a rail vehicle screen cabinet and a screen cabinet protection method with the closed structure are provided, so that the screen cabinet can isolate external air suspended matter interference during vehicle operation, and at the same time, convenient maintainability of maintenance is met, and certain protection ability can be provided in the emergency state of the train.

[0005] A screen cabinet with inflatable sealing structure is installed on the car body of rail transit train, comprising:

[0006] A screen cabinet fixed part connected with the car body through a first sealing structure, the screen cabinet fixed part comprises a cabinet body and a top fixed plate;

[0007] A screen cabinet movable part connected with the screen cabinet fixed part through a second sealing structure, the screen cabinet movable part comprises a top maintenance plate and a cabinet door;

[0008] The top fixed plate is further provided with a gas inlet valve for introducing gas into the cabinet body and an exhaust valve for exhausting gas.

[0009] Preferably, the first sealing structure comprises a sealing block seat and a sealing connecting block,

[0010] The sealing block seat is a hollow structure, and an open guide sealing strip is further arranged on one side of the sealing block seat, for clamping the sealing connecting block arranged on the screen cabinet fixed part.

[0011] Preferably, the second sealing structure is a hollow ventilation sealing block, which is sequentially provided with a first air bag and a second air bag in communication in the first direction, the first air bag has a larger cross-sectional area than the second air bag, and the second air bag is further provided with a sealing strip away from the outside of the first air bag.

[0012] Preferably, the sealing block seat is arranged in a sealing plate, the sealing plate is provided with a U-shaped opening structure, the sealing block seat is fixedly arranged at the inner bottom side of the closed opening of the U-shaped opening structure, the opening direction of the opening guide sealing strip is consistent with the U-shaped opening structure, and the sealing plate is further provided with a folded edge outside the U-shaped opening structure for fixed connection with the vehicle body.

[0013] Preferably, the top fixed plate and the cabinet body are both provided with grooves, the ventilation sealing block is arranged at the back of the grooves away from the inside of the cabinet body, and the top maintenance plate is inserted into the grooves of the top fixed plate and the cabinet body.

[0014] The inside of the cabinet body is provided with the ventilation sealing block for connecting the cabinet door.

[0015] Preferably, the opening guide sealing strip is a circular arc opening structure, the opening radius thereof is R1, the end of the sealing connecting block is a circular solid structure, the circular radius thereof is R2, and R1 is greater than R2.

[0016] Preferably, one side of the top maintenance plate is provided with a protrusion for matched connection with a sunken table arranged on the cabinet body.

[0017] Preferably, the outside of the connection part of the first sealing structure and the second sealing structure is provided with a fireproof adhesive tape.

[0018] Preferably, the method further comprises a ventilation pipe connected with the air inlet valve air outlet and extending to the bottom of the cabinet body.

[0019] The lower part of the cabinet body close to the ventilation pipe opening is provided with a temperature sensor, and the upper part of the cabinet body close to the air outlet valve is provided with a smoke temperature sensor.

[0020] A method for protecting a cabinet with an inflatable sealing structure, comprising:

[0021] New air is continuously introduced into the cabinet body through the air inlet valve, and the gas in the cabinet body is continuously discharged through the air outlet valve, so as to form air flow circulation and make the internal air pressure of the cabinet body greater than the external air pressure, thereby forming a positive pressure space;

[0022] The temperature and smoke concentration data in the cabinet body are acquired and transmitted to a fire control host;

[0023] When the temperature sensor detects that the temperature at the outlet of the ventilation pipe is higher than a critical set value, the fire control host controls the air conditioner to adjust the temperature in the cabinet body.

[0024] When the air conditioner fails, the temperature in the cabinet continues to rise, the temperature sensor transmits the temperature signal to the fire control host, and the fire control host starts the failure mode;

[0025] The fire control host and the air conditioner control panel quickly respond to control the air inlet valve and the air outlet valve into the failure mode for isolation, and control the brake air supply to the cabinet to temporarily inject a small amount of brake air;

[0026] When the smoke temperature sensor identifies that the temperature and smoke concentration in the cabinet change more than the set value, the signal is transmitted to the fire control host;

[0027] The fire control host starts the emergency state, sends instructions to the air conditioner control panel, the air conditioner control panel controls the air inlet valve and the air outlet valve in the emergency state, and the air inlet and air outlet of the air inlet valve and the air outlet valve are closed and isolated, so that the cabinet is completely isolated from the outside.

[0028] Compared with the prior art, the cabinet with inflatable sealing structure provided by the application seals the installation gaps of the cabinet in multiple sealing structures, and isolates the inside of the cabinet from the outside as much as possible. Meanwhile, the air inlet valve and the air outlet valve for gas exchange in the cabinet are also provided, which not only realizes air circulation and heat dissipation, but also forms a positive pressure space in the cabinet compared with the outside, reduces the interference of external environmental factors on internal working elements, and improves the stability of equipment operation. The efficient sealing protection of the cabinet, combined with the sensors arranged inside, can protect the cabinet to make treatment and judgment in emergency, and ensure the safe operation of the train. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0030] Figure 1 is a perspective view of the cabinet with inflatable sealing structure provided by an embodiment;

[0031] Figure 2 is a top view of the cabinet with inflatable sealing structure shown;

[0032] Figure 3 is Figure 2 A-A view of the cabinet with inflatable sealing structure shown;

[0033] Figure 4 is a B-B view of the cabinet with the inflatable sealing structure shown in FIG. 1; Figure 2 is a B-B view of the cabinet with the inflatable sealing structure shown in FIG. 1;

[0034] Figure 5 is a sectional view of the first sealing structure in the embodiment;

[0035] Figure 6 is a C-C view of the cabinet with the inflatable sealing structure shown in FIG. 1; Figure 2 is a C-C view of the cabinet with the inflatable sealing structure shown in FIG. 1;

[0036] Figure 7 is an enlarged view of the cabinet with the inflatable sealing structure shown in FIG. 1; Figure 2 is an enlarged view of the cabinet with the inflatable sealing structure shown in FIG. 1;

[0037] Figure 8 is a schematic view of the connection structure of the cabinet body and the cabinet door using the second sealing structure in the embodiment;

[0038] Figure 9 is a sectional view of the second sealing structure in the embodiment;

[0039] Figure 10 is a schematic view of the protection scheme of the cabinet with the inflatable sealing structure in the embodiment. DETAILED DESCRIPTION

[0040] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that when a component is referred to as "fixed to", "mounted to" or "provided on" another component, it can be directly provided on the other component or indirectly provided on the other component; when a component is "connected" to another component, or a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0042] It should be noted that the structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the limiting conditions of the embodiments of the present application, so they do not have technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0043] The following will be described through a specific embodiment, and combined with reference toFigures 1 to 10 The technical solution of the present invention will be further described in detail below.

[0044] In the diagram: 1-Vehicle body; 2-Cabinet body; 3-Cabinet door; 4-Top inspection plate; 5-Top fixing plate; 6-Intake valve; 7-Exhaust valve; 8-Sealing plate; 9-Sealing block seat; 10-Sealing connection block; 11-Ventilation sealing block; 12-Fire-resistant rubber strip; 13-Temperature sensor; 14-Smoke temperature sensor.

[0045] This embodiment provides a cabinet with an inflatable sealing structure, which is installed on the body of a rail transit train. It includes a cabinet fixing part connected to the body 1 through a first sealing structure. The cabinet fixing part includes a cabinet body 2 and a top fixing plate 5.

[0046] The movable part of the screen cabinet is connected to the fixed part of the screen cabinet through the second sealing structure. The movable part of the screen cabinet includes a top inspection plate 4 and a cabinet door 3.

[0047] The top fixing plate 5 is also equipped with an air inlet valve 6 for introducing gas into the cabinet 2 and an exhaust valve 7 for discharging gas.

[0048] Understandably, existing train control cabinets, as enclosures for working components, isolate these components from the external environment to a certain extent. However, with the increasing intelligence and digitalization of rail transit trains, the requirements for the sealing and protection level of these control cabinets are becoming increasingly stringent.

[0049] In this embodiment, the various connections of the cabinet are protected and sealed by the first sealing structure and the second sealing structure. At the same time, an air inlet valve and an air outlet valve are provided for gas exchange inside the cabinet. While ensuring air circulation and heat dissipation, the cabinet also forms a positive pressure space relative to the outside, reducing the interference of external environmental factors on the internal working components and improving the stability of equipment operation.

[0050] Preferred, such as Figure 5 As shown, the first sealing structure includes a sealing block seat 9 and a sealing connecting block 10. The sealing block seat 9 is a hollow structure, and an open guide sealing strip is also provided on one side of the sealing block seat 9 for engaging with the sealing connecting block 10 provided on the cabinet fixing part. (See reference...) Figure 5 It is easy to understand that when the sealing connecting block 10 is engaged with the sealing block seat 9, the hollow structure of the sealing block seat 9 is compressed and deformed due to the pressure applied during installation, and the opening guide sealing strip fits more tightly against the sealing connecting block 10, ensuring the stability of the sealing effect.

[0051] Preferred, such as Figure 9As shown, the second sealing structure is a hollow structure of the ventilation sealing block 11, which is sequentially provided with a communicating first air bag and a second air bag in the first direction, the cross-sectional area of the first air bag is larger than that of the second air bag, and the second air bag is further provided with a sealing strip away from the outside of the first air bag. Referring to Figure 9 As can be understood, the first direction is the moving direction when the screen cabinet movable part is disassembled. Since the second air bag with smaller cross-sectional area is arranged on the outside, the screen cabinet movable part can be connected more easily. At the same time, when the ventilation sealing block 11 is attached to the screen cabinet movable part, the first air bag and the second air bag are communicated, so that the internal shape can be self-adaptively adjusted to make the attachment more closely.

[0052] Preferably, as shown in the drawings, Figure 4 As shown, the sealing block seat 9 is arranged in the sealing plate 8, the sealing plate 8 is provided with a U-shaped opening structure, the sealing block seat 9 is fixedly arranged at the inner bottom side of the closed opening of the U-shaped opening structure, the opening direction of the opening guide sealing strip is consistent with the U-shaped opening structure, and the sealing plate 8 is further provided with a folded edge outside the U-shaped opening structure for fixed connection with the vehicle body 1.

[0053] In this embodiment, for the cabinet body 2 and the top fixed plate 5 which do not need to be disassembled during daily maintenance, the sealing connection block 10 is arranged at the end, when it is connected with the sealing plate 8 having the sealing block seat 9, the hollow structure in the sealing block seat 9 is deformed and compressed, the opening of the sealing block seat 9 is reduced, and the opening guide sealing strip wraps around the end of the sealing connection block 10, forming a first sealing structure; under the continuous action of the end mounting pressure of the sealing connection block 10 and the pressure of the hollow structure of the sealing block seat 9, the opening of the sealing block seat 9 tightly wraps around the end of the sealing connection block 10, forming a second sealing structure; the first sealing structure can prevent large particles such as dust layer from entering; the second pressure contact sealing can block small and micro particles such as moisture and smoke dust; the double-layer sealing effect ensures the firm sealing of the connection.

[0054] Preferably, as shown in the drawings, Figure 6 As shown in the drawings, Figure 7 As shown, the top fixed plate 5 and the cabinet body 2 are both provided with grooves, the ventilation sealing block 11 is arranged on the back of the grooves away from the inside of the cabinet body, and the top maintenance plate 4 is inserted into the grooves of the top fixed plate 5 and the cabinet body 2.

[0055] The inside of the cabinet body 2 is provided with the ventilation sealing block 11 for connecting the cabinet door 3.

[0056] In this embodiment, for the top access plate 4 and the cabinet door 3 that need to be opened during maintenance, by providing the vent sealing block 11 with a second sealing structure on the top fixed plate 5 and the cabinet body 2, the top access plate 4 and the cabinet door 3 can be easily connected with the vent sealing block 11 in the initial state. In the running state, when the cabinet body 2 is inflated to form a positive pressure space, the top access plate 4 and the cabinet door 3 are pressed by the internal gas and tightly attached to the vent sealing block 11, and because the first gas bag and the second gas bag are complementary after receiving pressure and shrinking deformation, the vent sealing block 11 is attached more tightly, avoiding the sealing failure of the top access plate 4 and the cabinet door 3 due to improper installation or deformation of the parts during installation, and having a strong fault tolerance mechanism.

[0057] Preferably, as shown in Figure 5 The opening guide sealing strip is a circular arc opening structure, the opening radius is R1, the end of the sealing connecting block 10 is a circular solid structure, the circular radius is R2, and R1 is greater than R2, so that the installation and positioning of the cabinet body 2 and the top fixed plate 5 are more convenient and simple, and the installation process is guaranteed to be unobstructed.

[0058] Preferably, as shown in Figure 6 One side of the top access plate 4 is provided with a protrusion, which is connected with the counterbore provided on the cabinet body 2. This structure can ensure the sealing effect in the inflated state, and the top access plate 4 cannot be opened in the inflated state, ensuring the safe operation of the equipment.

[0059] Preferably, as shown in Figure 4 , Figure 6 , Figure 7 The outer side of the connection between the first sealing structure and the second sealing structure is provided with a fire-resistant rubber strip 12, which cooperates with the use of metal materials to realize the double-sided fire resistance of the inside of the cabinet body 2 and the outside of the cabinet body 2, and enhance the fire protection ability of the screen cabinet.

[0060] Preferably, it further includes a ventilation pipe connected with the air outlet of the air inlet valve 6 and extending to the bottom of the cabinet body 2;

[0061] The lower part of the cabinet body 2 is provided with a temperature sensor 13 near the ventilation pipe opening, and the upper part of the cabinet body 2 is provided with a smoke temperature sensor 14 near the exhaust valve 7. The setting of the sensor can accurately detect the situation in the cabinet, and once an emergency occurs, it can timely detect and transmit the signal, make correct judgment and ensure the safe operation of the train.

[0062] As shown in Figure 10 A kind of air-tight sealing structure screen cabinet protection method, comprising:

[0063] By the air inlet valve 6 continuously into the cabinet 2, by the exhaust valve 7 continuously discharge the gas in the cabinet 2, form the air flow circulation, while making the cabinet 2 internal pressure greater than the external pressure, form the positive pressure space;

[0064] By the air inlet valve 6 and the exhaust valve 7 in the cabinet 2 form the air flow circulation, can effectively take away the cabinet 2 in the device working when the heat emitted. Maintain constant temperature, while compared to the cabinet 2 outside space, realize the positive pressure space, external gas can not enter the cabinet through the gap, reduce the possibility of air suspended matter on the working environment influence.

[0065] Get the temperature and smoke concentration data in the cabinet 2 to the fire control host, real-time monitoring of the temperature and smoke concentration data in the cabinet 2 cabinet.

[0066] When the temperature sensor 13 detects the temperature at the outlet of the ventilation pipe is higher than the critical setting value, the fire control host controls the air conditioner to adjust the temperature in the cabinet 2, maintains the temperature in the cabinet 2 constant, ensures the stability of the equipment work.

[0067] When the air conditioner fails, the temperature in the cabinet 2 continues to rise, the temperature sensor 13 will temperature signal to the fire control host, the fire control host starts the fault mode;

[0068] The fire control host and the air conditioner control panel respond quickly, control the air valve 6 and the exhaust valve 7 into the fault mode for isolation, and control the brake air injection into the cabinet 2 temporarily;

[0069] Once the train outside failure such as fire caused the air conditioner to close, can be through the temporary injection of a small amount of brake gas into the cabinet 2, to ensure the air flow circulation in the cabinet 2, reduce the temperature in the cabinet 2, to ensure that the equipment can run well in a short time, for the vehicle to win time and space for continuous operation;

[0070] When the smoke temperature sensor 14 identifies the temperature and smoke concentration change in the cabinet 2 exceeds the set value, the signal is transmitted to the fire control host;

[0071] The fire control host starts the emergency state, sends instructions to the air conditioner control panel, the air conditioner control panel controls the air inlet valve 6 and the exhaust valve 7 in the emergency state, the air inlet and outlet of the air inlet valve 6 and the exhaust valve 7 are closed and isolated, so that the cabinet 2 is completely isolated from the outside;

[0072] When the fire in the cabinet 2 cannot be handled, the smoke temperature detector 14 can ensure that the fire in the cabinet is detected in the first time, and directly feedback to the air conditioner control panel and close the air valve and exhaust valve of the cabinet, so as to completely isolate the inside and outside of the cabinet 2 and prevent the spread of the fire in the cabinet 2.

[0073] The above merely describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the concept of the present application, and these improvements are within the protection scope of the present application.

Claims

1. A kind of cabinet with inflatable sealing structure screen, installed on rail transit train body, it is characterized in that, The utility model relates to a kind of screen cabinet with inflatable sealing structure, including: Screen cabinet fixed part is connected with vehicle body by first sealing structure, and the screen cabinet fixed part includes cabinet and top fixed plate; The first sealing structure includes sealing block seat and sealing connecting block, The sealing block seat is hollow structure, and the sealing block seat side is further provided with opening guide sealing strip, for being connected with the sealing connecting block provided on the screen cabinet fixed part;The opening guide sealing strip is circular arc opening structure, and the sealing connecting block end is circular solid structure;When the sealing connecting block is connected with the sealing plate with the sealing block seat, the hollow structure in the sealing block seat is deformed and structure compression, the sealing block seat opening reduces, the opening guide sealing strip wraps the sealing connecting block end, and the first sealing structure is formed;The sealing connecting block end installs pressure and the hollow structure pressure of the sealing block seat, the sealing block seat opening tightly wraps the sealing connecting block end, and the second sealing structure is formed; Screen cabinet movable part is connected with the screen cabinet fixed part by second sealing structure, and the screen cabinet movable part includes top maintenance plate and cabinet door;The second sealing structure is hollow structure's ventilation sealing block, and first gas bag and second gas bag are sequentially provided with communication in first direction, the first gas bag cross-sectional area is greater than the second gas bag cross-sectional area, and the second gas bag is further provided with sealing strip away from the first gas bag outer side, and the first direction is the moving direction when the screen cabinet movable part is disassembled;By the second gas bag with smaller cross-sectional area being arranged outside, the screen cabinet movable part can be more easily connected;When the ventilation sealing block is attached to the screen cabinet movable part, the first gas bag and the second gas bag are communicated, so that the internal shape can be self-adaptively adjusted to make the attachment more closely; The top fixed plate is further provided with air inlet valve for passing into gas to the cabinet interior and exhaust valve for discharging gas, so that the cabinet interior is inflated to form positive pressure space, and the top maintenance plate and the cabinet door are tightly attached to the ventilation sealing block under the pressure of internal gas, and the first gas bag and the second gas bag are complementary after receiving pressure shrinkage due to internal intercommunication, so that the ventilation sealing block is attached more closely.

2. The screen cabinet with inflatable sealing structure according to claim 1, wherein The sealing block seat is arranged in a sealing plate, the sealing plate is provided with a U-shaped opening structure, the sealing block seat is fixedly arranged at the inner bottom side of the closed opening of the U-shaped opening structure, the opening direction of the opening guide sealing strip is consistent with the U-shaped opening structure, and the sealing plate is further provided with a folded edge outside the U-shaped opening structure for fixed connection with the vehicle body.

3. The screen cabinet with inflatable sealing structure according to claim 1, wherein The top fixed plate and the cabinet are both provided with grooves, the ventilation sealing block is arranged on the inner side of the cabinet away from the cabinet, and the top maintenance plate is inserted into the grooves of the top fixed plate and the cabinet. The inner side of the cabinet is provided with the ventilation sealing block for connecting the cabinet door.

4. The cabinet with inflatable seal structure according to claim 1, wherein, The opening guide sealing strip opening radius is R1, the sealing connecting block end circular radius is R2, and R1 is greater than R2.

5. The cabinet with inflatable seal structure according to claim 1, wherein, The top access panel is provided with a convex surface which is connected with a sunken platform arranged on the cabinet.

6. The cabinet with inflatable seal structure according to claim 1, wherein, The outer side of the connection between the first sealing structure and the second sealing structure is provided with a fireproof rubber strip.

7. The cabinet with inflatable seal structure according to claim 1, wherein, The air vent pipe is connected with the air outlet of the air inlet valve and extends to the bottom of the cabinet. The temperature sensor is arranged at the lower part of the cabinet near the air vent pipe, and the smoke temperature sensor is arranged at the upper part of the cabinet near the air outlet valve.

8. A method of protecting a cabinet with an inflatable sealing structure, in particular a cabinet as claimed in claim 7, characterized in that The method comprises the following steps: The new air is continuously introduced into the cabinet through the air inlet valve, and the gas in the cabinet is continuously discharged through the air outlet valve, so as to form the air flow circulation and make the internal air pressure of the cabinet greater than the external air pressure, thereby forming the positive pressure space. The temperature and smoke concentration data in the cabinet are acquired and transmitted to the fire control host; When the temperature sensor detects that the temperature at the air vent pipe outlet is higher than the critical setting value, the fire control host controls the air conditioner to adjust the temperature in the cabinet. When the air conditioner fails, the temperature in the cabinet continuously rises, the temperature sensor transmits the temperature signal to the fire control host, and the fire control host starts the failure mode. The fire control host and the air conditioner control panel quickly respond, control the air inlet valve and the air outlet valve to enter the failure mode for isolation, and control the brake air to be temporarily injected into the cabinet in a small amount. When the smoke temperature sensor identifies that the temperature and smoke concentration in the cabinet change by more than the set value, the signal is transmitted to the fire control host. The fire control host starts the emergency state, sends the instruction to the air conditioner control panel, the air conditioner control panel controls the air inlet valve and the air outlet valve to be in the emergency state, the air inlet and the air outlet of the air inlet valve and the air outlet valve are closed and isolated, so that the cabinet is completely isolated from the outside.

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