A locomotive electrical cabinet

Abstract

This invention discloses a locomotive electrical cabinet, relating to the field of rail transit technology, comprising: a cabinet door, the cabinet door having a first ventilation and fireproof grille and a multi-layer sealing structure; a cabinet body, the cabinet door being able to close or open the cabinet body, the cabinet body having a second ventilation and fireproof grille opposite to the first ventilation and fireproof grille, both the first and second ventilation and fireproof grilles having an initial ventilation state and an expanded fireproof state; when both the first and second ventilation and fireproof grilles are in the initial ventilation state, they can conduct heat dissipation through the internal cavity of the cabinet to form a heat dissipation path; when both the first and second ventilation and fireproof grilles are in the expanded fireproof state, they can seal the internal cavity of the cabinet for fire prevention; and a retaining edge, connected to the cabinet body, which, when the cabinet door is closed, cooperates with the multi-layer sealing structure to form a multi-level seal from the edge of the cabinet door to the center. The above-mentioned locomotive electrical cabinet can simultaneously meet the ventilation and heat dissipation requirements and the fire prevention requirements of the electrical cabinet.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and more specifically, to a locomotive electrical cabinet. Background Technology

[0002] Locomotive electrical cabinets are used to install various electrical components used in locomotive and rolling stock control. In practical applications, in order to obtain TSI fire protection certification and overcome obstacles to locomotives entering the market, in cases where some electrical components themselves do not meet fire protection requirements, fire protection verification is often carried out through electrical cabinets to exempt the electrical components inside the cabinet from fire protection requirements.

[0003] In related technologies, electrical cabinets adopt fixed ventilation openings, which meet the heat dissipation requirements, but can easily become channels for flame spread during a fire, thus failing to meet fire protection requirements.

[0004] In summary, how to provide an electrical cabinet that simultaneously meets the requirements for ventilation and heat dissipation as well as fire protection is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a locomotive electrical cabinet that can simultaneously meet the requirements of ventilation and heat dissipation and fire protection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A locomotive electrical cabinet, comprising: The cabinet door is equipped with a first ventilation and fireproof grille and a multi-layer sealing structure; The cabinet has a door that can close or open the cabinet. The cabinet is provided with a second ventilation and fireproof grille that is opposite to the first ventilation and fireproof grille. Both the first ventilation and fireproof grille and the second ventilation and fireproof grille have an initial ventilation state and an expansion and fireproof state. When both the first and second ventilation fireproof grilles are in the initial ventilation state, they can open up the inner cavity of the cabinet to form a heat dissipation path; when both the first and second ventilation fireproof grilles are in the expanded fireproof state, they can seal the inner cavity of the cabinet for fire prevention. The edge is connected to the cabinet body. When the cabinet door closes the cabinet body, the edge and the multi-layer sealing structure work together to form a multi-level seal from the edge of the cabinet door to the center.

[0007] Preferably, the cabinet door includes a first folded edge and a plurality of second folded edges located at its edge, and a plurality of gaps formed by the first folded edge and the plurality of second folded edges are provided with fireproof sealing layers, the fireproof sealing layers, the first folded edge and the second folded edges forming the multi-layer sealing structure.

[0008] Preferably, at least one of the circumferential edge of the first folded edge and the circumferential edge of the second folded edge covers the circumferential edge of the guard edge.

[0009] Preferably, the cabinet door further includes a cabinet door handle, which includes a force-applying part and a blocking part. The blocking part is located on the side of the cabinet door closer to the cabinet body and can be elastically deformed. The force-applying part is located on the side of the cabinet door away from the cabinet body. The elastic deformation of the blocking part is used to provide space for the force-applying part to hold.

[0010] Preferably, the cabinet door further includes a plurality of compression locks located at its edge, the plurality of compression locks being disposed away from the multi-layer sealing structure and used to lock or unlock the cabinet.

[0011] Preferably, the retaining edge includes a first bent portion disposed away from the cabinet body, the first bent portion extending between the first fold and the second fold, the first bent portion conforming to the side of the second fold closer to the first fold, and the fireproof sealing layer filling the gap formed by the first bent portion, the first fold and the second fold.

[0012] Preferably, the retaining edge includes a second bent portion disposed toward the cabinet body, one side of the second bent portion being connected to the end of the first bent portion, and the other side of the second bent portion being connected to the cabinet body.

[0013] Preferably, the cabinet includes a base frame with a cable inlet hole, the wall of which is used to form a sealed connection with the edge of a fireproof sealing module through which the cable passes.

[0014] Preferably, the cabinet further includes a top frame disposed opposite to the base frame, the top frame being provided with a lifting plate and a top sealing plate, the top sealing plate being sealed to the base frame via a side frame; The side frame includes a first side frame and a second side frame arranged opposite to each other. Each of the first side frame and the second side frame is provided with a plurality of mounting holes arranged along the height direction for mounting electrical equipment.

[0015] Preferably, the cabinet includes a rear sealing plate disposed opposite to the cabinet door, the rear sealing plate having a second ventilation and fireproof grille on the side away from the base frame, and the cabinet door having a first ventilation and fireproof grille on the side close to the base frame.

[0016] The locomotive electrical cabinet provided by this invention includes a cabinet door, a cabinet body, and a retaining edge. The cabinet door can close or open the cabinet body. The cabinet door is equipped with a first ventilation and fireproof grille, and the cabinet body is equipped with a second ventilation and fireproof grille opposite to the first ventilation and fireproof grille. Both the first and second ventilation and fireproof grilles have an initial ventilation state and an expanded fireproof state. Under normal operating conditions, both the first and second ventilation and fireproof grilles are in the initial ventilation state, thereby enabling reliable heat dissipation for the electrical equipment inside the cabinet. In the event of a fire, when both the first and second ventilation and fireproof grilles are in the expanded fireproof state, they can seal the internal cavity of the cabinet for fire prevention. When the cabinet door closes the cabinet body, the retaining edge and the multi-layer sealing structure work together to form a multi-level seal from the edge of the cabinet door to the center to ensure a reliable sealing effect of the cabinet door relative to the closed cabinet body, thereby meeting the fire resistance requirements of the electrical cabinet.

[0017] The beneficial effects of this invention are as follows: When the first and second ventilation fireproof grilles are in normal use, they achieve ventilation and heat dissipation inside the cabinet; in the event of a fire, the fireproof grilles will expand rapidly and block the ventilation openings. Combined with the multi-layer sealing structure of the side guards and cabinet doors, the multi-level sealing can ensure the overall reliable protection performance of the electrical cabinet. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the locomotive electrical cabinet provided by the present invention; Figure 2 This is a schematic diagram of the structure of the base frame provided by the present invention; Figure 3 This is a top view of the base frame provided by the present invention; Figure 4 This is a schematic diagram of the structure of the first side frame provided by the present invention; Figure 5 for Figure 4 Top view; Figure 6 This is a schematic diagram of the top frame provided by the present invention; Figure 7 This is a schematic diagram of the structure of the second side frame provided by the present invention; Figure 8 for Figure 7 Top view; Figure 9 This is a schematic diagram of the structure of the retaining edge provided by the present invention; Figure 10 for Figure 9 The right view; Figure 11 for Figure 9 The front view; Figure 12 This is a schematic diagram of the cabinet door provided by the present invention; Figure 13 for Figure 12 The left view; Figure 14 for Figure 12 Rear view; Figure 15 This is a schematic diagram illustrating the fit between the edge guard and the cabinet door provided by the present invention. Figure 16 This is a schematic diagram of the structure of the rear sealing plate provided by the present invention; Figure 17 for Figure 16 The front view; Figure 18 for Figure 16 The right view; Figure 19 This is a simulation diagram of the locomotive electrical cabinet provided by the present invention.

[0020] Figures 1-19 In the accompanying drawings, the reference numerals include: 1-Base frame; 2-First side frame; 3-Top frame; 4-Second side frame; 5-Side guard; 6-Cabinet door; 7-Rear panel; 8-Mounting hole; 11-Inlet hole; 12-Bottom sealing plate; 13-Fireproof sealing module; 14-Front mounting hole; 15-Rear mounting hole; 16-Vertical mounting hole; 21-Third fold; 22-Fourth fold; 31-Hanging plate; 32-Top sealing plate; 41-Fifth fold; 42-Sixth fold; 51-First bend; 52-Second bend; 61-First fold; 62-Second fold; 63-Fireproof sealing layer; 64-First ventilation fireproof grille; 65-Compression door lock; 66-Force application part; 67-Sealing part; 71-Flat plate; 72-Reinforcing rib; 73-Second ventilation fireproof grille. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The core of this invention is to provide a locomotive electrical cabinet that can meet the ventilation and heat dissipation requirements inside the cabinet, as well as the fire prevention requirements.

[0023] The locomotive electrical cabinet provided by this invention includes a cabinet door 6, a cabinet body, and a retaining edge 5. Please refer to [reference needed]. Figure 1 .

[0024] Cabinet door 6 is equipped with a first ventilation and fireproof grille 64 and a multi-layer sealing structure; cabinet door 6 can close or open the cabinet, and there are no restrictions on the specific way the cabinet door 6 closes or opens the cabinet. Cabinet door 6 can be detached and installed on the cabinet so that it can be easily disassembled and assembled according to operational needs. The cabinet can be designed as an integral structural component based on sealing requirements, reducing splicing gaps and ensuring the sealing effect of the entire electrical cabinet.

[0025] Please refer to Figure 16 , Figure 17 , Figure 18 The cabinet is equipped with a second ventilation and fireproof grille 73 opposite to the first ventilation and fireproof grille 64. Both the first and second ventilation and fireproof grilles 64 and 73 have an initial ventilation state and an expanded fireproof state. Both the first and second ventilation and fireproof grilles 64 and 73 are made of fireproof materials. The fireproof materials expand rapidly when a flame occurs, thereby enabling the cabinet to form a closed space and ensuring fire protection. Specifically, the initial ventilation state is the original state before expansion. In this state, the electrical cabinet normally allows air to enter and exit for heat dissipation and ventilation.

[0026] When both the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 are in the initial ventilation state, they can conduct heat dissipation through the internal cavity of the cabinet; when both the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 are in the expanded fireproof state, they can seal the internal cavity of the cabinet for fire prevention.

[0027] The retaining edge 5 is connected to the cabinet body. When the cabinet door 6 closes the cabinet body, the retaining edge 5 and the multi-layer sealing structure work together to form a multi-level seal from the edge of the cabinet door 6 to the center. Specifically, through this arrangement, the cabinet body can be sealed in multiple layers from the edge to the center in the event of a fire, ensuring the reliable fire resistance performance of the cabinet body.

[0028] After the specific edge guard 5 and cabinet door 6 are installed in place, under normal working conditions, the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 are both in the initial ventilation state to ventilate and dissipate heat for the electronic equipment inside the cabinet; while under fire conditions, the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 are both in the expanded fireproof state, which can seal the inner cavity of the cabinet and prevent flames and smoke from leaking from the door gaps. Combined with the multi-layer reliable sealing of the cabinet door 6 and the cabinet body, the fireproof integrity of the cabinet can be guaranteed.

[0029] Regarding the cabinet structure, material selection must consider avoiding material deformation or cracking due to high temperatures, ensuring that no gaps allow flames to penetrate in the event of a fire. For the cabinet door structure, the cabinet door 6 achieves a multi-level reliable seal between the two when relatively enclosing the cabinet, similarly preventing gaps from allowing flames to penetrate in the event of a fire. Therefore, the fire resistance integrity of the electrical cabinet can be guaranteed to meet the standard requirements.

[0030] Based on the above embodiments, please refer to Figure 12 , Figure 13 , Figure 14 The cabinet door 6 includes a first folded edge 61 and several second folded edges 62 located at its edge. The gaps formed by the first folded edge 61 and several second folded edges 62 are provided with fireproof sealing layers 63. The fireproof sealing layers 63, the first folded edge 61 and the second folded edges 62 form a multi-layer sealing structure.

[0031] Specifically, "several second folds 62" refers to the possibility of using one, two, three, or more second folds 62, which can be determined according to the sealing requirements.

[0032] If a second fold 62 is provided, a fireproof sealing layer 63 is provided in the gap between the first fold 61 and the second fold 62; if two or more second folds 62 are provided, a fireproof sealing layer 63 is provided in the gap between the first fold 61 and the adjacent second fold 62, and in the gap between two adjacent second folds 62.

[0033] The fire-resistant sealing layer 63, the first folded edge 61, and the second folded edge 62 form a multi-layer sealing structure. When the cabinet door 6 closes the cabinet, it works in conjunction with the retaining edge 5 to form a multi-layer seal, ensuring a reliable sealing effect for the entire electrical cabinet. Under normal operating conditions, the fire-resistant sealing layer 63, the first ventilation fireproof grille 64, and the second ventilation fireproof grille 73 are all in an unexpanded state, allowing the electronic equipment inside the cabinet to ventilate and dissipate heat normally. However, under fire conditions, the fire-resistant sealing layer 63, the first ventilation fireproof grille 64, and the second ventilation fireproof grille 73 are all in an expanded state. In this case, the internal cavity of the cabinet is reliably sealed, forming a sealed chamber. This prevents flames or smoke from escaping the cabinet, ensuring the fire resistance performance of the electrical cabinet.

[0034] Based on any of the above embodiments, please refer to Figure 12 , Figure 13 , Figure 14 At least one of the circumferential edge of the first folded edge 61 and the circumferential edge of the second folded edge 62 covers the circumferential edge of the guard edge 5.

[0035] Specifically, at least one of the first folded edge 61 and the second folded edge 62 is provided to cover the circumferential edge of the retaining edge 5. Specifically, covering means wrapping around the outer perimeter of the retaining edge 5, thereby forming a multi-layer seal from the edge to the center, ensuring the overall fire resistance performance of the cabinet.

[0036] In one specific embodiment, the retaining edge 5 is disposed between the first folded edge 61 and the second folded edge 62, while the fireproof sealing layer 63 is disposed between the first folded edge 61 and the second folded edge 62 and contacts the retaining edge 5. Thus, in the event of a fire, the fireproof sealing layer 63 expands to seal the gap, ensuring an overall sealing effect, i.e., ensuring the fire resistance of the electrical cabinet. This embodiment corresponds to the form where the circumferential edge of the first folded edge 61 covers the circumferential edge of the retaining edge 5.

[0037] In this embodiment, both the first folded edge 61 and the second folded edge 62 are bent toward the inner cavity of the cabinet. The specific bending range can be the same or different. For example, the bending range can be gradually increased from the edge to the center to ensure a reliable multi-layer sealing effect.

[0038] Based on any of the above embodiments, please refer to Figure 12 , Figure 13 The cabinet door 6 also includes a cabinet door handle, which includes a force-applying part 66 and a blocking part 67. The blocking part 67 is located on the side of the cabinet door 6 close to the cabinet body and can be elastically deformed. The force-applying part 66 is located on the side of the cabinet door 6 away from the cabinet body. The elastic deformation of the blocking part 67 is used to provide space for the force-applying part 66 to hold.

[0039] Specifically, the sealing part 67 can produce elastic deformation. When it is necessary to remove the cabinet door 6 from the cabinet, the operator manually reaches in and contacts the force-applying part 66. At the same time, the elastic deformation of the sealing part 67 makes it easy for the operator to grasp the force-applying part 66, thereby enabling the cabinet door 6 to be moved.

[0040] For the setting of the sealing part 67, the cabinet door 6 should have a corresponding hole. The size of the sealing part 67 is larger than the size of the corresponding hole, so that the sealing part 67 can reliably seal the hole without moving the cabinet door 6, thus ensuring the overall sealing effect.

[0041] The force-applying part 66 is located on the side of the cabinet door 6 away from the cabinet body, so that it can be operated from the outside. The force-applying part 66 can be in the form of a handle, a lever, etc., depending on the actual situation.

[0042] In addition, it should be noted that the operation of moving cabinet door 6 is carried out after it is unlocked relative to the cabinet body. Only after unlocking can cabinet door 6 move freely.

[0043] Based on any of the above embodiments, please refer to Figure 13 , Figure 14 The cabinet door 6 also includes several compression locks 65 located at its edge. The compression locks 65 are arranged to bypass the multi-layer sealing structure and are used to lock or unlock the cabinet.

[0044] Several compression door locks 65 are set away from the multi-layer sealing structure, thereby avoiding interference with the sealing structure. When the cabinet door 6 closes the cabinet, the compression door locks 65 are relatively locked to the cabinet. The edge 5 and the multi-layer sealing structure work together to form a multi-level seal from the edge of the cabinet door 6 to the center, ensuring the airtightness and smoke tightness of the cabinet and meeting the fire resistance integrity requirements.

[0045] Among them, several compression door locks 65 are arranged circumferentially along the edge of the cabinet door 6. When locking, they can provide a uniform circumferential clamping force, so that the cabinet door 6 is always pressed against the cabinet body and the fireproof sealing layer 63 is kept in a compressed state to ensure the fireproof performance of the cabinet body.

[0046] Based on any of the above embodiments, please refer to Figure 9 , Figure 10 , Figure 11 , Figure 15 The edge 5 includes a first bent portion 51 disposed away from the cabinet body. The first bent portion 51 extends between the first folded edge 61 and the second folded edge 62. The first bent portion 51 is attached to the side of the second folded edge 62 close to the first folded edge 61, and the fireproof sealing layer 63 fills the gap formed by the first bent portion 51, the first folded edge 61 and the second folded edge 62.

[0047] In this embodiment, the first bending portion 51 in the direction away from the cabinet body refers to the inner cavity that is relatively far from the cabinet body, forming a structure that protrudes from the cabinet body.

[0048] Among them, the fire-resistant sealing layer 63 is a fire-resistant sealing material with a high expansion ratio produced based on expandable graphite. When a fire occurs, it can expand to several times its original volume to form a dense fire-resistant layer. Similarly, the first ventilation fire-resistant grille 64 installed on the cabinet door 6 has a ventilation function when no fire occurs. In the event of a fire, the fire-resistant material will expand rapidly to seal the ventilation opening and close the inner cavity of the cabinet.

[0049] When the cabinet door 6 closes the cabinet, the first folded edge 61 is located at the outermost edge of the cabinet door 6, forming the first layer of closure for the cabinet; the second folded edge 62 is located inside the first folded edge 61, forming the second layer of closure for the cabinet; a fireproof sealing layer is installed between the first folded edge 61 and the second folded edge 62. When it expands, the fireproof sealing layer 63 fills the gap formed by the first bend 51, the first folded edge 61, and the second folded edge 62, forming the third layer of closure for the cabinet. This ensures the overall fire resistance of the electrical cabinet.

[0050] Cabinet door 6 is a detachable structure, and the cabinet body can be opened and its inner cavity exposed by removing cabinet door 6 as needed.

[0051] In one specific embodiment, the gaps between the first fold 61 and the second fold 62 are equal at each position to facilitate the filling of the fireproof sealing layer. This can also be flexibly changed according to the actual situation, and no specific limitation is made here.

[0052] Based on any of the above embodiments, please refer to Figure 1 , Figure 9 The edge 5 includes a second bent portion 52 disposed in the direction of the cabinet body. One side of the second bent portion 52 is connected to the end of the first bent portion 51, and the other side of the second bent portion 52 is connected to the cabinet body.

[0053] like Figure 1 The second bend 52 is oriented towards the cabinet. Specifically, during installation, this second bend 52 is installed with the cabinet so that the entire edge 5 is reliably fixed relative to the cabinet. The specific installation method is as follows: welding.

[0054] The second bend 52 is a structure provided on both sides of the flange 5 in the transverse direction, while the second bend 52 is a structure provided on both sides of the flange 5 in the longitudinal direction. Here, the transverse and longitudinal directions are... Figure 11 The directions shown are for explanation.

[0055] When the cabinet door 6 is closed and the cabinet is locked, the cabinet door 6 will press against the first bend 51, while the second bend 52 provides support perpendicular to the cabinet wall, thereby ensuring that the fireproof sealing layer 63 around the cabinet door 6 is evenly compressed, effectively maintaining the airtightness and smoke tightness of the electrical cabinet and meeting the fire resistance integrity requirements.

[0056] Based on any of the above embodiments, please refer to Figure 2 , Figure 3 The cabinet includes a base frame 1, which has a cable inlet hole 11. The wall of the cable inlet hole 11 is used to seal the edge of the fireproof sealing module 13 through which the cable passes.

[0057] The inlet hole 11 is an opening in the base frame 1, mainly used to install the fireproof sealing module 13. The inlet hole 11 and the fireproof sealing module 13 are tightly connected, meaning that the connection has good sealing performance, ensuring the sealing effect of the cabinet. In the event of a fire, it can prevent the danger caused by the spread of flames. Reliable sealing can be achieved by interference fit connection or by using sealant. As for the sealing of the cables running through the fireproof sealing module 13 itself, if the cables have a sealing layer, this sealing layer can adhere and produce a good sealing effect when passing through the preset hole of the fireproof sealing module 13. Thus, a double sealing effect is achieved, ensuring the sealing effect of the cabinet, that is, ensuring the fire resistance of the cabinet in the event of a fire.

[0058] In this embodiment, the fireproof sealing module 13 has multiple holes to correspond to the cable installation requirements. The specific number and shape of the holes can be designed according to the specifications of each cable without too many restrictions.

[0059] In practical application, the fireproof sealing module 13 is first fixed to the inlet hole 11 of the base frame 1, and then each cable is passed through the corresponding opening on the module and enters the cabinet to complete the installation.

[0060] In this embodiment, it should also be noted that the fireproof sealing module 13 contains fire-resistant expanding material, which will expand when exposed to fire, sealing all gaps between the cable and the fireproof sealing module 13, and between the fireproof sealing module 13 and the base frame 1, thus maintaining the fire resistance integrity of the electrical cabinet.

[0061] The base frame 1 is also provided with a front mounting hole 14, a rear mounting hole 15, and a vertical mounting hole 16, such as Figure 2 As shown, the front mounting hole 14 and the rear mounting hole 15 are coaxial, and the bottom can be horizontally installed by bolts; while the vertical mounting hole 16 is used to install the base frame 1 vertically by bolts, thereby ensuring the reliable and stable installation of the electrical cabinet.

[0062] The base frame 1 also includes a bottom sealing plate 12, which is specifically used to connect to the side frame and the rear sealing plate 7 to ensure the sealing effect at the bottom. The specific connection method can be welding. The base frame 1 is provided with a cable inlet 11 and a fireproof sealing module 13, which are sealed together to jointly ensure the overall reliable sealing effect.

[0063] Based on any of the above embodiments, please refer to Figure 6 The cabinet also includes a top frame 3 opposite to the base frame 1. The top frame 3 is equipped with a lifting plate 31 and a top sealing plate 32. The top sealing plate 32 is sealed to the base frame 1 through side frames. The lifting plate 31 is used for lifting the entire cabinet, and the top sealing plate 32 is used for sealing the top of the entire cabinet. The top sealing plate 32, the side frames, and the top frame 3 are welded together to avoid gaps caused by splicing and to ensure the sealing effect of the entire cabinet.

[0064] Please refer to Figure 4 , Figure 7 The side frame includes a first side frame 2 and a second side frame 4 arranged opposite to each other. Each of the first side frame 2 and the second side frame 4 is provided with multiple mounting holes 8 arranged along the height direction for installing electrical equipment. Specifically, the multiple mounting holes 8 arranged along the height direction are used to install electrical equipment at different heights. The electrical equipment can be installed on the first side frame 2 on one side, on the second side frame 4 on one side, or both on the first side frame 2 and the second side frame 4, depending on the design requirements.

[0065] In addition, please refer to Figure 5 , Figure 8 The first side frame 2 has a third folded edge 21 and a fourth folded edge 22, and the second side frame 4 has a fifth folded edge 41 and a sixth folded edge 42. The third folded edge 21 is bent to form a hollow area on the first side frame 2, providing space for fasteners to pass through during electrical equipment installation. Similarly, the fifth folded edge 41 is bent to form a hollow area on the second side frame 4, also providing space for fasteners to pass through during electrical equipment installation. After both the first side frame 2 and the second side frame 4 are installed in place, the hollow areas are completely sealed, ensuring a reliable overall sealing effect.

[0066] The specific design of the fourth fold 22 and the sixth fold 42 can increase the overall structural strength of the first side frame 2 and the second side frame 4, and ensure the service life of the electrical cabinet.

[0067] Based on any of the above embodiments, please refer to Figure 16 The cabinet includes a rear sealing plate 7 opposite to the cabinet door 6. The side of the rear sealing plate 7 away from the base frame 1 is provided with a second ventilation fireproof grille 73, and the side of the cabinet door 6 close to the base frame 1 is provided with a first ventilation fireproof grille 64.

[0068] When both the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 are in the initial ventilation state, the first ventilation fireproof grille 64 is located on the lower side for air intake, while the second ventilation fireproof grille 73 is located on the upper side for air exhaust. Here, "upper side" and "lower side" refer to relative to... Figure 1 The orientation shown is for illustrative purposes. In this configuration, a heat dissipation path is created, ensuring reliable ventilation and cooling for the electronic equipment within the cabinet, thus extending its service life.

[0069] When both the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 are in an expanded fireproof state, corresponding to a fire-prone situation, the expansion of the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 can block the original air intake and exhaust paths, avoid the dangerous situation caused by the formation of flame channels in the gaps, prevent the flames and high-temperature smoke inside the cabinet from passing out of the cabinet, and buy time for subsequent personnel evacuation and fire extinguishing, thus meeting the fire protection requirements.

[0070] Therefore, the design of the first ventilation fireproof grille 64 and the second ventilation fireproof grille 73 can meet both the ventilation and heat dissipation requirements under normal working conditions and the fire protection requirements under fire conditions. Thus, the fire protection requirements of the electrical components inside the cabinet can be exempted by conducting fire protection verification through the electrical cabinet.

[0071] In addition, the cabinet includes a rear sealing plate 7 disposed opposite to the cabinet door 6. The rear sealing plate 7 specifically includes a flat plate 71 and reinforcing ribs 72. The flat plate 71 is located at the rear of the cabinet and is used for sealing the rear structure of the cabinet. The reinforcing ribs 72 are used to improve the strength of the flat plate 71 and prevent it from bending and deforming.

[0072] Simulation tests were conducted on the locomotive electrical cabinet provided by this invention, such as... Figure 19 Temperature simulations were performed based on the heat output of each electrical device within the cabinet to verify that the simulated temperature was within the operating temperature range of each device. As shown in the diagram, the highest temperature inside the cabinet was approximately 71.5℃, occurring in the central power module area; the temperatures of the remaining electrical devices ranged from 46.4℃ to 68.2℃. The simulated temperatures of all electrical devices did not exceed their rated operating temperature range, indicating that the ventilation and heat dissipation design of the electrical cabinet can meet the long-term reliable operation requirements of the components, effectively controlling the temperature rise inside the cabinet while achieving fireproof sealing.

[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0074] The present invention has provided a detailed description of a locomotive electrical cabinet. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative of the method and core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A locomotive electrical cabinet, characterized by, include: Cabinet door (6), wherein the cabinet door (6) is provided with a first ventilation fireproof grille (64) and a multi-layer sealing structure; The cabinet body, the cabinet door (6) can close or open the cabinet body, the cabinet body is provided with a second ventilation fireproof grille (73) opposite to the first ventilation fireproof grille (64), the first ventilation fireproof grille (64) and the second ventilation fireproof grille (73) both have an initial ventilation state and an expansion fireproof state; When both the first ventilation fireproof grille (64) and the second ventilation fireproof grille (73) are in the initial ventilation state, they can conduct the internal cavity of the cabinet to form a heat dissipation path; when both the first ventilation fireproof grille (64) and the second ventilation fireproof grille (73) are in the expansion fireproof state, they can seal the internal cavity of the cabinet for fire prevention. The edge (5) is connected to the cabinet body. When the cabinet door (6) closes the cabinet body, the edge (5) and the multi-layer sealing structure cooperate to form a multi-level seal from the edge of the cabinet door (6) to the center.

2. The electric cabinet for a locomotive according to claim 1, characterized in that, The cabinet door (6) includes a first fold (61) and several second folds (62) located at its edge. A fireproof sealing layer (63) is provided in several gaps formed by the first fold (61) and several second folds (62). The fireproof sealing layer (63), the first fold (61) and the second folds (62) form the multi-layer sealing structure.

3. The electric cabinet for a locomotive according to claim 2, wherein At least one of the circumferential edge of the first fold (61) and the circumferential edge of the second fold (62) is provided to cover the circumferential edge of the stop (5).

4. The electric cabinet for a locomotive according to claim 1, wherein The cabinet door (6) also includes a cabinet door handle, which includes a force-applying part (66) and a blocking part (67). The blocking part (67) is located on the side of the cabinet door (6) close to the cabinet body and can be elastically deformed. The force-applying part (66) is located on the side of the cabinet door (6) away from the cabinet body. The elastic deformation of the blocking part (67) is used to provide space for the force-applying part (66) to hold.

5. The locomotive electrical cabinet according to claim 4, characterized in that, The cabinet door (6) also includes a plurality of compression locks (65) located at its edge, the plurality of compression locks (65) being disposed away from the multi-layer sealing structure and used to lock or unlock the cabinet.

6. The locomotive electrical cabinet according to claim 2, characterized in that, The edge (5) includes a first bend (51) disposed away from the cabinet body. The first bend (51) extends between the first fold (61) and the second fold (62). The first bend (51) fits against the side of the second fold (62) close to the first fold (61). The fireproof sealing layer (63) fills the gap formed by the first bend (51), the first fold (61) and the second fold (62).

7. The locomotive electrical cabinet according to claim 6, characterized in that, The edge (5) includes a second bend (52) disposed toward the cabinet body. One side of the second bend (52) is connected to the end of the first bend (51), and the other side of the second bend (52) is connected to the cabinet body.

8. The locomotive electrical cabinet according to any one of claims 1 to 7, characterized in that, The cabinet includes a base frame (1), which has a cable inlet hole (11). The wall of the cable inlet hole (11) is used to seal the edge of the fireproof sealing module (13) through which the cable passes.

9. The locomotive electrical cabinet according to claim 8, characterized in that, The cabinet also includes a top frame (3) arranged opposite to the base frame (1). The top frame (3) is provided with a lifting plate (31) and a top sealing plate (32). The top sealing plate (32) is sealed to the base frame (1) through a side frame. The side frame includes a first side frame (2) and a second side frame (4) arranged opposite to each other. Each of the first side frame (2) and the second side frame (4) is provided with a plurality of mounting holes (8) arranged along the height direction for installing electrical equipment.

10. The locomotive electrical cabinet according to claim 9, characterized in that, The cabinet includes a rear sealing plate (7) disposed opposite to the cabinet door (6). The rear sealing plate (7) is provided with a second ventilation fireproof grille (73) on the side away from the base frame (1), and the cabinet door (6) is provided with a first ventilation fireproof grille (64) on the side close to the base frame (1).

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