High-voltage equipment box for urban vehicles
By designing a closed high-voltage equipment box for urban vehicles, centrally installing high-voltage components and using pulling devices for rapid maintenance, the faults and aging problems caused by external environment of urban vehicles are solved, and higher insulation capabilities are achieved and lower maintenance costs.
Patent Information
- Application Number
- CN202323461279.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-19
AI Technical Summary
The high-pressure components of urban vehicles are installed on the roof, which are easily affected by the external environment, resulting in a reduction in insulation capacity, increasing the failure rate and aging speed, which may cause serious problems such as explosions.
Design a high-voltage equipment box for urban vehicles, which concentrates high-voltage components in a closed box, including vacuum circuit breakers, grounding switches, transient inductors, lightning arresters, high-voltage isolation switches and other components, and achieves rapid maintenance through pulling devices. Avoid the impact of the external environment on high-pressure components.
By concentrating high-pressure components in the closed box, the insulation capacity is significantly improved, faults and explosion problems caused by the external environment are avoided, the maintenance process is simplified, and maintenance costs are reduced and the life cycle costs are reduced.
Smart Images
Figure CN222441191U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage electrical appliances for urban vehicles, and in particular to a high-voltage equipment box for urban vehicles. Background Art
[0002] At present, the high-voltage components of urban vehicles are all installed in a scattered manner on the roof. They are all installed in a standing position, which takes up a lot of space in the vehicle height. In addition, the high-voltage components are exposed to the outside and are greatly affected by the external environment, which leads to reduced insulation capacity. They are often affected by environmental factors such as wind, dust, rain, snow, and haze, which cause flashover of high-voltage components on the roof, and even explosion of some components. At the same time, it also accelerates the aging of the above-mentioned high-voltage components, resulting in performance degradation or even failure.
[0003] The 25KV high-voltage components in the high-voltage equipment box, including the main breaker, frequently operate in each phase zone during train operation. It is also the high-voltage component with the highest failure rate among all high-voltage components, which is particularly troublesome during off-train maintenance. Utility Model Content
[0004] The purpose of the utility model is to provide a high-voltage equipment box for urban vehicles in response to the defects in the prior art, so that all high-voltage components are concentrated in one box with a closed structure, the influence of the external environment on the use of the product is eliminated, the insulation capacity is greatly improved, and the original external high-voltage components are avoided, which often cause pollution flashover of the roof high-voltage components and even explosion of some components. Serious problems can be avoided, and quality accidents caused by environmental factors such as wind, dust, rain, snow, haze, etc. can be avoided. It is convenient to maintain and reduce the cost of the whole life cycle. At the same time, there is no need to arrange gas pipelines in the high-voltage equipment box, which avoids the high-voltage components from being affected by weather and climate. The important component vacuum circuit breaker can be set as a pull-out device. When the vacuum circuit breaker is taken off the vehicle for maintenance, there is no need to get off the high-voltage equipment box, and only the pull-out device needs to be pulled out, thereby reducing the maintenance cost.
[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a high-voltage equipment box for urban vehicles, including an incoming cable terminal connected to a pantograph, an incoming current transformer, an incoming voltage transformer, a vacuum circuit breaker, a grounding switch, a transient inductor, a lightning arrester, a high-voltage isolating switch, an outgoing current transformer, an outgoing voltage transformer, a cable terminal to a main transformer, a cable terminal to a high-voltage equipment box of another vehicle, a filter, the high-voltage connecting line, a circuit breaker control junction box, a low-voltage signal cavity, a grounding loop, and a pulling device; it also includes two pairs of side walls: a first side wall and a second side wall, a third side wall and a fourth side wall; the first end of the incoming cable terminal connected to the pantograph is connected to the roof pantograph, and is passed through The first end of the cable terminal to the main transformer is connected to the output side of the vacuum circuit breaker, and the second end is connected to the main transformer; the first end of the cable terminal to the other vehicle high-voltage equipment box is connected to the output side of the high-voltage disconnector, and the second end is connected to the other vehicle high-voltage equipment box, and passes through the outgoing current transformer; the input side of the high-voltage disconnector is connected to the output side of the vacuum circuit breaker, and the lightning arrester, the outgoing current transformer and the transient inductor are connected to the output side of the vacuum circuit breaker, wherein the vacuum circuit breaker and the grounding switch are integrated.
[0006] Furthermore, the vacuum circuit breaker, the grounding switch and the high-voltage disconnector are all electric.
[0007] Furthermore, it comprises two sets of the incoming line voltage transformer and the outgoing line voltage transformer, the incoming line voltage transformer is installed on the control signal wiring chamber, the primary winding is connected to the input side of the vacuum circuit breaker, and is used to detect the voltage introduced by the pantograph; the outgoing line voltage transformer is installed at the main transformer cable terminal in the direction of vehicle travel, the primary winding is connected to the output side of the vacuum circuit breaker, and is used to detect the grid voltage control.
[0008] Furthermore, the high-voltage equipment box includes two sets of the incoming current transformers and the outgoing current transformers. The incoming current transformers are installed on the third side wall and pass through the incoming cable terminal connected to the pantograph, so as to detect the current introduced by the pantograph; the outgoing current transformers are installed on the third side wall and pass through the cable terminal of the high-voltage equipment box to other vehicles, so as to detect network current control.
[0009] Furthermore, the transient inductance suppresses the operating overvoltage of closing the main circuit breaker.
[0010] Furthermore, the filter is installed on the fourth side wall, and the fourth side wall balances the air pressure inside and outside the box and prevents dust from entering the interior of the high-voltage electrical box.
[0011] Furthermore, the circuit breaker is integrally mounted on the circuit breaker control junction box, and the circuit breaker control junction box is mounted on the pulling device; the pulling device consists of a slide groove, a slide rail, and a slide rod, and the pulling device can quickly disassemble the vacuum circuit breaker without getting off the high-voltage equipment box.
[0012] It includes an incoming cable terminal connected to the pantograph, an incoming current transformer, an incoming voltage transformer, a vacuum circuit breaker, a grounding switch, a transient inductor, a lightning arrester, a high-voltage disconnector, an outgoing current transformer, an outgoing voltage transformer, a cable terminal to the main transformer, a cable terminal to the high-voltage equipment box of another vehicle, a filter, the high-voltage connecting line, a circuit breaker control junction box, a low-voltage signal cavity, a grounding loop, and a pulling device; it also includes two pairs of side walls: a first side wall and a second side wall, a third side wall and a fourth side wall; The first end of the incoming cable terminal connected to the pantograph is connected to the roof pantograph and passes through the incoming current transformer, and the second end is connected to the input side of the vacuum circuit breaker, inputs the incoming voltage transformer and is connected to the input side of the vacuum circuit breaker; the first end of the cable terminal to the main transformer is connected to the output side of the vacuum circuit breaker, and the second end is connected to the main transformer; the first end of the cable terminal to the high-voltage equipment box of another vehicle is connected to the output side of the high-voltage disconnector, and the second end is connected to the high-voltage equipment box of another vehicle, and passes through the outgoing cable. side current transformer; the input side of the high-voltage disconnector is connected to the output side of the vacuum circuit breaker, the lightning arrester, the current transformer on the outgoing line side and the transient inductor are connected to the output side of the vacuum circuit breaker, wherein the vacuum circuit breaker and the grounding switch are of an integrated structure, so that all high-voltage components are concentrated in one box, and the structure is closed, eliminating the influence of the external environment on the use of the product, and the insulation capacity is greatly improved, avoiding the original external high-voltage components often affected by environmental factors such as wind, dust, rain, snow, haze, etc., resulting in dirty flashover of the roof high-voltage components, and even some components exploding and other serious problems, thereby effectively avoiding quality accidents caused by environmental influences, and convenient maintenance, reducing the full life cycle cost, and at the same time, no gas pipelines need to be arranged in the high-voltage equipment box, avoiding the high-voltage components from being affected by weather and climate, and the important component vacuum circuit breaker can be set as a pull-out device, when the vacuum circuit breaker is unloaded for maintenance, there is no need to unload the high-voltage equipment box, only the pull-out device needs to be pulled out, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a perspective view of the utility model;
[0015] Figure 2 It is a top view of the utility model;
[0016] Figure 3 This is the front view of the utility model;
[0017] Figure 4 It is the left view of the utility model;
[0018] Figure 5 It is the pull-out device of the utility model;
[0019] Figure 6 It is the topological diagram of the utility model;
[0020] Reference numerals:
[0021] Box body 1, incoming cable terminal 2 connected to the pantograph, incoming current transformer 3, incoming voltage transformer 4, vacuum circuit breaker 5, grounding switch 6, transient inductor 7, lightning arrester 8, high-voltage disconnector 9, outgoing current transformer 10, outgoing voltage transformer 11, cable terminal to the main transformer 12, cable terminal to the high-voltage equipment box of other vehicles 13, filter 14, high-voltage connecting line 15, circuit breaker control junction box 16, low-voltage signal chamber 17, grounding loop 18, pulling device 100, slide trough 101, slide rail 102, slide rod 103. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0024] A high voltage equipment box for a city vehicle, such as Figure 1 , 5, 6, including an incoming cable terminal 2 connected to the pantograph, an incoming current transformer 3, an incoming voltage transformer 4, a vacuum circuit breaker 5, a grounding switch 6, a transient inductor 7, a lightning arrester 8, a high-voltage disconnector 9, an outgoing current transformer 10, an outgoing voltage transformer 11, a cable terminal to the main transformer 12, a cable terminal to the high-voltage equipment box of another vehicle 13, a filter 14, the high-voltage connecting line 15, a circuit breaker control junction box 16, a low-voltage signal cavity 17, a grounding loop 18, and a pulling device 100; it also includes two pairs of side walls: a first side wall 61 and a second side wall 62, a third side wall 63 and a fourth side wall 64; the first end of the incoming cable terminal 2 connected to the pantograph is connected to the roof pantograph and passes through the incoming cable terminal 2. The first end of the cable terminal 12 to the main transformer is connected to the output side of the vacuum circuit breaker 5, and the second end is connected to the main transformer; the first end of the cable terminal 13 to the other vehicle high-voltage equipment box is connected to the output side of the high-voltage disconnector 9, and the second end is connected to the other vehicle high-voltage equipment box, and passes through the current transformer 10 on the outgoing line; the input side of the high-voltage disconnector 9 is connected to the output side of the vacuum circuit breaker 5, and the lightning arrester 8, the current transformer 10 on the outgoing line and the transient inductor 7 are connected to the output side of the vacuum circuit breaker 5, wherein the vacuum circuit breaker 5 and the grounding switch 6 are integrated.
[0025] Specifically, the first end of the incoming cable terminal 2 connected to the pantograph is connected to the roof pantograph, passes through the incoming current transformer 3, and the second end is connected to the input side of the vacuum circuit breaker 5, inputs the incoming voltage transformer 4 and is connected to the input side of the vacuum circuit breaker 5; the first end of the cable terminal 12 to the main transformer is connected to the output side of the vacuum circuit breaker 5, and the second end is connected to the main transformer; the first end of the cable terminal 13 to the high-voltage equipment box of another vehicle is connected to the output side of the high-voltage disconnector 9, and the second end is connected to the high-voltage equipment box of another vehicle, and passes through the outgoing current transformer 10; the input side of the high-voltage disconnector 9 and the vacuum circuit breaker 5 output side connection, the arrester 8, the current transformer 10 on the outgoing line side and the transient inductor 7 are connected to the output side of the vacuum circuit breaker 5, wherein the vacuum circuit breaker 5 and the grounding switch 6 are an integrated structure, which is used to concentrate various high-voltage components in a box, and the structure is closed, eliminating the influence of the external environment on the use of the product, and the insulation capacity is greatly improved, avoiding the original external environment factors such as wind, dust, rain, snow, haze, etc., which often cause the roof high-voltage components to flash, and even some components to explode and other serious problems, thereby effectively avoiding quality accidents caused by environmental influences, and convenient maintenance, reducing the full life cycle cost. And the grounding switch knife is connected to the input and output ends of the vacuum circuit breaker, which can be used to achieve safe grounding when the vehicle is put into storage for inspection.
[0026] As a preferred embodiment of the above, Figure 1 As shown, the vacuum circuit breaker 5, the grounding switch 6 and the high-voltage disconnector 9 are all electric.
[0027] Specifically, the vacuum circuit breaker 5, the grounding switch 6 and the high-voltage disconnector 9 are all electrically operated structures, so that no gas pipelines need to be arranged in the high-voltage equipment box, thereby preventing the high-voltage components from being affected by weather and climate.
[0028] As a preferred embodiment of the above, Figure 1 As shown, it includes two sets of the incoming line voltage transformer 4 and the outgoing line voltage transformer 11. The incoming line voltage transformer 4 is installed on the control signal wiring chamber, and the primary winding is connected to the input side of the vacuum circuit breaker 5 for detecting the voltage introduced by the pantograph; the outgoing line voltage transformer 11 is installed at the main transformer cable terminal 12 in the direction of vehicle travel, and the primary winding is connected to the output side of the vacuum circuit breaker 5 for detecting the network voltage control.
[0029] Specifically, the system comprises two sets of the incoming voltage transformer 4 and the outgoing voltage transformer 11, wherein the incoming voltage transformer 4 is installed on the control signal connection chamber, and the primary winding is connected to the input side of the vacuum circuit breaker 5, for detecting the voltage introduced by the pantograph; the outgoing voltage transformer 11 is installed at the main transformer cable terminal 12 in the direction of vehicle travel, and the primary winding is connected to the output side of the vacuum circuit breaker 5, for detecting the structure of network voltage control, so as to detect the voltage introduced by the pantograph and detect the network voltage control.
[0030] As a preferred embodiment of the above, Figure 1 As shown, the high-voltage equipment box includes two sets of the incoming current transformers 3 and the outgoing current transformers 10. The incoming current transformers 3 are installed on the third side wall 63 and pass through the incoming cable terminal 2 connected to the pantograph, so as to detect the current introduced by the pantograph; the outgoing current transformer 10 is installed on the third side wall 63 and passes through the cable terminal 13 of the high-voltage equipment box to other vehicles, so as to detect network current control.
[0031] Specifically, the high-voltage equipment box includes two sets of the incoming current transformers 3 and the outgoing current transformers 10. The incoming current transformers 3 are installed on the third side wall 63 and pass through the incoming cable terminal 2 connected to the pantograph, so as to detect the current introduced by the pantograph; the outgoing current transformer 10 is installed on the third side wall 63 and passes through the cable terminal 13 of the high-voltage equipment box to other vehicles, so as to detect the structure of network current control, so as to detect the current introduced by the pantograph and detect network current control.
[0032] As a preferred embodiment of the above, Figure 1 As shown, the transient inductor 7 suppresses the operating overvoltage when the main circuit breaker is closed.
[0033] As a preferred embodiment of the above, Figure 1 As shown, the filter 14 is installed on the fourth side wall 64, and the fourth side wall 64 balances the air pressure inside and outside the box and prevents dust from entering the interior of the high-voltage electrical box.
[0034] Specifically, the filter 14 is installed on the fourth side wall 64, and the fourth side wall 64 balances the air pressure inside and outside the box and prevents dust from entering the structure inside the high-voltage electrical box, so as to balance the pressure inside and outside the box when the vehicle passes through the tunnel.
[0035] As a preferred embodiment of the above, Figure 5 As shown, the circuit breaker 5 is integrally installed on the circuit breaker control junction box 16, and the circuit breaker control junction box 16 is installed on the pulling device 100; the pulling device 100 is composed of a slide groove 101, a slide rail 102, and a slide rod 103. The pulling device 100 can quickly disassemble the vacuum circuit breaker without getting off the high-voltage equipment box.
[0036] Specifically, the circuit breaker 5 is installed as a whole on the circuit breaker control junction box 16, and the circuit breaker control junction box 16 is installed on the pulling device 100; the pulling device 100 is composed of a slide groove 101, a slide rail 102, and a slide rod 103. The pulling device 100 can quickly disassemble the structure of the vacuum circuit breaker without getting off the high-voltage equipment box, so as to install the circuit breaker 5 on the pulling device 19 according to the historical fault analysis, and open the inspection door on the pulled side; when the vacuum circuit breaker 5 is inspected, the circuit breaker is pulled out through the pulling device 19, and then the circuit breaker is removed with the help of a lifting vehicle.
[0037] Specifically, in this solution, the high-voltage connecting line 15 fully considers the uniform electric field distribution, performs edge and corner burr processing, and prevents tip discharge and corona inception voltage from exceeding the limit.
[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A high-voltage equipment box for urban vehicles, characterized in that: It comprises a box (1), an incoming cable terminal (2) connected to a pantograph, an incoming current transformer (3), an incoming voltage transformer (4), a vacuum circuit breaker (5), a grounding switch (6), a transient inductor (7), a lightning arrester (8), a high-voltage disconnector (9), an outgoing current transformer (10), an outgoing voltage transformer (11), a main transformer cable terminal (12), a cable terminal to a high-voltage equipment box in another vehicle (13), a filter (14), a high-voltage connecting line (15), a circuit breaker control junction box (16), a low-voltage signal chamber (17), a grounding loop (18), and a pulling device (100); It also includes two pairs of side walls: a first side wall (61) and a second side wall (62), a third side wall (63) and a fourth side wall (64); The first end of the incoming cable terminal (2) connected to the pantograph is connected to the roof pantograph and passes through the incoming current transformer (3), and the second end is connected to the input side of the vacuum circuit breaker (5), inputs the incoming voltage transformer (4) and is connected to the input side of the vacuum circuit breaker (5); The first end of the cable terminal (12) to the main transformer is connected to the output side of the vacuum circuit breaker (5), and the second end is connected to the main transformer; The first end of the cable terminal (13) to the high-voltage equipment box of another vehicle is connected to the output side of the high-voltage disconnector (9), and the second end is connected to the high-voltage equipment box of another vehicle and passes through the current transformer (10) on the outgoing line side; The input side of the high-voltage disconnector (9) is connected to the output side of the vacuum circuit breaker (5), the lightning arrester (8), the outgoing line current transformer (10) and the transient inductor (7) are connected to the output side of the vacuum circuit breaker (5), wherein the vacuum circuit breaker (5) and the grounding switch (6) are integrated.
2. The high-voltage equipment box for urban vehicles according to claim 1 is characterized in that: The vacuum circuit breaker (5), the grounding switch (6) and the high-voltage disconnector (9) are all electrically driven.
3. The high-voltage equipment box for urban vehicles according to claim 1 is characterized in that: It comprises two sets of the incoming line voltage transformer (4) and the outgoing line voltage transformer (11), wherein the incoming line voltage transformer (4) is installed on the control signal wiring chamber, and the primary winding is connected to the input side of the vacuum circuit breaker (5) for detecting the voltage introduced by the pantograph; The outgoing voltage transformer (11) is installed at the main transformer cable terminal (12) in the direction of vehicle travel, and the primary winding is connected to the output side of the vacuum circuit breaker (5) for detecting grid voltage control.
4. The high-voltage equipment box for urban vehicles according to claim 3 is characterized in that: The high-voltage equipment box comprises two sets of the incoming-side current transformers (3) and the outgoing-side current transformers (10), wherein the incoming-side current transformers (3) are installed on the third side wall (63) and penetrate the incoming cable terminal (2) connected to the pantograph, and are used to detect the current introduced by the pantograph; The outgoing line side current transformer (10) is installed on the third side wall (63) and penetrates the cable terminal (13) of the high-voltage equipment box of another vehicle, and is used for detecting network current control.
5. The high-voltage equipment box for urban vehicles according to claim 1, characterized in that: The transient inductor (7) suppresses the operating overvoltage of the main circuit breaker closing.
6. The high-voltage equipment box for urban vehicles according to claim 1, characterized in that: The filter (14) is installed on the fourth side wall (64), and the fourth side wall (64) balances the air pressure inside and outside the box and prevents dust from entering the interior of the high-voltage electrical box.
7. The high-voltage equipment box for urban vehicles according to claim 1 is characterized in that: The circuit breaker (5) is integrally mounted on the circuit breaker control junction box (16), and the circuit breaker control junction box (16) is mounted on the pulling device (100); The pulling device (100) is composed of a slide groove (101), a slide rail (102), and a slide rod (103). The pulling device (100) can quickly disassemble the vacuum circuit breaker without removing the high-voltage equipment box from the vehicle.