Substation closing device with insulation protection

Abstract

The utility model provides a transformer substation closing device with insulation protection, which belongs to the technical field of transformer substations and comprises a cabinet body, one end of the cabinet body is provided with a control panel and a front door plate, the cabinet body is internally provided with a circuit breaker handcart and a circuit breaker plug, one end of the circuit breaker plug is provided with a static contact and a lantern ring, and the other end of the circuit breaker plug is provided with a switch. A lantern ring is arranged in the cabinet body, the lantern ring is connected with an elastic piece, one end of the elastic piece is provided with an impact ball and a sensor, a static contact box is arranged in the cabinet body, and a metal plate is arranged in the static contact box; the beneficial effects of the utility model are that the impact ball is driven by the elastic member to impact the metal plate, so that irregular sound is made to remind related personnel to maintain the static contact before closing, the safety effect is improved, and meanwhile, corresponding alarm can be timely given out according to signal transmission of the sensor, and the safety is improved. Stable operation of equipment is guaranteed through mutual cooperation of the two devices, maintenance and observation are facilitated, and the device does not occupy the space of a cabinet body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of switch cabinet, specifically, relates to a substation closing device with insulation protection. BACKGROUND

[0002] The high-voltage switch cabinet plays a vital role in power generation, power transmission, power distribution and electric energy conversion in the power system, is widely used in breaking important load and frequently operated place, once the high-voltage switch cabinet fails and cannot be treated and solved in time and effectively, the failure rate of high-voltage switch cabinet can be greatly increased, and serious equipment accidents can be caused, and the part of the high-voltage switch cabinet that is most prone to heating failure is the trolley contact, the impact, wear and tear, overcurrent heating and other combined effects when the switch cabinet trolley plug is operated, which can affect the bite force and tightness between the moving and static contacts, causing vibration, arc, oxidation and other hazards.

[0003] Before the switch cabinet power transmission closing operation is carried out, it is necessary to confirm whether the power switch has been opened and check whether other equipment in the distribution room is working normally to ensure that the entire power system is in a safe state, and the fixing bolt or other components of the switch contact in the switch cabinet can be gradually loosened due to long-term operation and environmental influence, when the closing contact in the switch cabinet is loose, the contact reliability thereof can be greatly reduced, which can reduce the contact area of the current through the contact, and in turn increase the contact resistance, since heat is generated when the current flows through the contact, the increase of the contact resistance can cause the contact to overheat, further aggravate the poor contact problem, and the loose contact can also cause arc, therefore, this condition can increase the risk during closing, when the static contact of the switch is loose, irregular mechanical vibration can also be generated, and the static contact cannot be closed normally when the static contact is loose, and the static contact is usually located in the interior of the contact box, so it is inconvenient to observe and maintain in time, how to invent a substation closing device with insulation protection to improve these problems has become a problem to be solved by the person skilled in the art. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a substation closing device with insulation protection, which aims at solving the problem that the static contact of the switch is loose and irregular mechanical vibration is generated, which can cause arc, oxidation and other hazards in the switch cabinet, increase the risk of operation, and is inconvenient to observe and maintain in time.

[0005] The utility model is implemented as follows:

[0006] The utility model provides a kind of transformer substation closing device with insulation protection, including cabinet, the one end of cabinet is equipped with control panel and front door plate, the inside of cabinet is equipped with circuit breaker handcart and circuit breaker plug, the one end of circuit breaker plug is equipped with static contact and collar, the elastic member is connected to the collar, the one end of elastic member is equipped with impact ball and sensor, the inside of cabinet is equipped with static contact box, the inside of static contact box is equipped with metal plate, static contact is cylindrically arranged, the outer wall of static contact is fixedly connected with clamping block, the collar is made of rubber material, the collar is sleeved in clamping block, the outer wall of collar is fixedly connected with elastic member, the one end of elastic member away from collar is fixedly connected with impact ball, the inside of impact ball is equipped with cavity, the inside cavity wall of impact ball is fixedly connected with sensor.

[0007] By adopting the above technical scheme, when the static contact is loose and current passes through, irregular vibration will be generated, and the elastic member drives the impact ball to impact the metal plate under the action of current, so as to emit irregular sound, thereby reminding relevant personnel to overhaul.

[0008] Preferably, the control panel and the front door plate are rotatably connected to the front end of the cabinet, and the control panel is connected with a closing and opening switch.

[0009] Preferably, the inside of the cabinet is provided with a relay instrument room, a circuit breaker compartment, a cable room and a bus compartment.

[0010] Preferably, the inside of the circuit breaker compartment is provided with a partition plate, the partition plate is fixedly connected to the inner wall of the cabinet, a movable base is slidably connected to the upper side of the partition plate, the upper end of the movable base is fixedly connected to the circuit breaker handcart, a heater is fixedly connected to one side of the circuit breaker handcart, and the heater is fixedly connected to the circuit breaker plug.

[0011] Preferably, the one end of the circuit breaker plug is fixedly connected with a connecting rod, the outer wall of the connecting rod is movably connected with the static contact, the connecting rod is screw-connected with a fixing nut, and the circuit breaker plug and the static contact are fixedly connected through the connecting rod and the fixing nut.

[0012] Preferably, the static contact box is fixedly connected to the inner wall of the cabinet, the inner wall of the static contact box is fixedly connected with a metal plate, the metal plate is provided with four, the four metal plates form a rhombic vertical cylinder shape, two opposite side walls of the metal plate are provided with a strip-shaped hole, and the strip-shaped hole is provided with a plurality of strip-shaped holes.

[0013] By adopting the technical scheme, the metal plate and the impact ball are made of copper or aluminum material, so that a larger sound is generated when they impact each other, the diffusion of the audio frequency is effectively increased through the strip-shaped hole, relevant personnel is reminded to overhaul, and the sensor also sends an irregular vibration signal to the controller at this time, so that the indicator light flickers.

[0014] The utility model discloses the beneficial effect is:

[0015] When the static contact is loose, the current generates irregular vibration when passing through, and the elastic member drives the impact ball to impact the metal plate through the action of the current, so that irregular sound is generated to remind relevant personnel to maintain the static contact before closing, improve the safety effect, and at the same time, the corresponding alarm can be sent in time according to the signal transmission of the sensor, the stable operation of the equipment is ensured through the mutual cooperation of the two, the maintenance and observation are convenient, and the device does not occupy the space of the cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as the limitation to the scope, and for the ordinary skilled person in the art, other related drawings can be obtained according to these drawings without the creative labor.

[0017] Figure 1 It is the whole front side structure schematic diagram of the substation closing device with insulation protection provided by the embodiment of the utility model;

[0018] Figure 2 It is the switch cabinet internal partial structure schematic diagram of the substation closing device with insulation protection provided by the embodiment of the utility model;

[0019] Figure 3 It is the circuit breaker handcart and mobile base structure schematic diagram of the substation closing device with insulation protection provided by the embodiment of the utility model;

[0020] Figure 4 It is the circuit breaker partial structure sectional view of the substation closing device with insulation protection provided by the embodiment of the utility model;

[0021] Figure 5 It is the circuit breaker partial structure sectional view of the substation closing device with insulation protection provided by the embodiment of the utility model; Figure 4 The structure enlarged schematic diagram in A place in the figure;

[0022] Figure 6It is partial structure sectional view of the static contact box of the substation closing device with insulation protection provided by the utility model embodiment.

[0023] Figure 7 It is static contact and sleeve ring separation structure schematic view of the substation closing device with insulation protection provided by the utility model embodiment.

[0024] In the drawing: 1, cabinet body; 2, opening and closing switch; 3, control panel; 4, front door plate; 5, relay instrument room; 6, circuit breaker handcart; 7, movable base; 8, circuit breaker compartment; 9, partition; 10, heater; 11, circuit breaker plug; 12, cable room; 13, static contact box; 14, busbar compartment; 15, static contact; 16, metal plate; 17, impact ball; 18, sensor; 19, elastic member; 20, fixed nut; 21, link rod; 22, clamping block; 23, sleeve ring; 24, strip-shaped hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments will be described clearly and completely in combination with the drawings in the utility model embodiments below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Embodiment, refer to Figures 1-7 A substation closing device with insulation protection, including cabinet body 1, one end of cabinet body 1 is equipped with control panel 3 and front door plate 4, the inside of cabinet body 1 is equipped with circuit breaker handcart 6 and circuit breaker plug 11, one end of circuit breaker plug 11 is equipped with static contact 15 and sleeve ring 23, sleeve ring 23 is connected with elastic member 19, one end of elastic member 19 is equipped with impact ball 17 and sensor 18, the inside of cabinet body 1 is equipped with static contact box 13, the inside of static contact box 13 is equipped with metal plate 16, static contact 15 is set up in cylindrical shape, the outer wall of static contact 15 is fixedly connected with clamping block 22, sleeve ring 23 is made of rubber material, and sleeve ring 23 is sleeved in the inside of clamping block 22;The outer wall of sleeve ring 23 is fixedly connected with elastic member 19, one end of elastic member 19 away from sleeve ring 23 is fixedly connected with impact ball 17, the inside of impact ball 17 is equipped with cavity, and the inside cavity wall of impact ball 17 is fixedly connected with sensor 18.

[0027] Further, the control panel 3 and the front door plate 4 are rotationally connected with the front end of the cabinet body 1, and the control panel 3 is connected with a switching-on and switching-off switch 2; the inside of the cabinet body 1 is provided with a relay instrument room 5, a circuit breaker compartment 8, a cable room 12 and a busbar compartment 14; the inside of the circuit breaker compartment 8 is provided with a partition plate 9, the partition plate 9 is fixedly connected with the inner wall of the cabinet body 1, a movable base 7 is slidably connected with the upper portion of the partition plate 9, the upper end of the movable base 7 is fixedly connected with a circuit breaker trolley 6, a heater 10 is fixedly connected with one side of the circuit breaker trolley 6, the heater 10 is fixedly connected with a circuit breaker plug 11, one end of the circuit breaker plug 11 is fixedly connected with a connecting rod 21, the outer wall of the connecting rod 21 is movably connected with a static contact 15, the connecting rod 21 is screwedly connected with a fixing nut 20, and the circuit breaker plug 11 and the static contact 15 are fixedly connected through the connecting rod 21 and the fixing nut 20.

[0028] It should be noted that whether other equipment in the power distribution room is normally working can be detected through the switching-on and switching-off switch 2 on the control panel 3, so as to ensure that the entire power system is in a safe state, and the control panel 3 is provided with a controller and an alarm indicator lamp, which can alarm in time, so as to remind relevant personnel to overhaul the internal elements of the cabinet body 1, and the circuit breaker plug 11 and the static contact 15 are fixedly connected through the connecting rod 21 and the fixing nut 20, so that the static contact 15 can be conveniently disassembled and installed, the installation process is simplified, and the fixing is facilitated;

[0029] The relay instrument room 5 is mainly used for installing relays, instruments and secondary devices, the relay is a key element for realizing automatic control and protection function, can automatically switch or alarm the circuit according to the set conditions, the instrument is used for displaying and monitoring various parameters of the power system, such as current, voltage, power and the like, and the secondary device includes a signal lamp, a change-over switch, a button and the like, and is used for realizing the operation and monitoring of the switch cabinet, the design of the relay instrument room 5 considers the convenience of operation and maintenance, and an observation window and an operation panel are usually provided, so as to facilitate the on-site monitoring and operation of the workers;

[0030] The cable room 12 is a compartment for installing cable joints and cable connection conductors, the cable is an important channel for connecting the switch cabinet with the external power system, and the cable joint in the cable room 12 needs to have good insulation performance and mechanical strength, so as to ensure the safety and reliability of power transmission;

[0031] The busbar compartment 14 is a compartment for installing main busbars and branch busbars, the main busbar is a main power transmission channel between the internal compartments of the switch cabinet and between the switch cabinet and the external power system, and the branch busbar is used for distributing power to each power consumption device or line, the busbar in the busbar compartment 14 usually adopts a rectangular section of a round corner copper bar, and is covered with a heat-shrinkable sleeve to improve the insulation performance, and the design of the busbar compartment 14 considers the fixation and support of the busbar, so as to ensure the stability and safety of the busbar during operation;

[0032] In addition, when the switch cabinet operates in a humid environment, the temperature difference between the inside and outside of the cabinet can cause condensation on the inner wall of the cabinet. Condensation not only reduces the insulation performance of the equipment, but also can cause serious accidents such as short circuit. Therefore, the heater 10 can be used to increase the temperature inside the cabinet, reduce the temperature difference between the inside and outside, and effectively prevent the formation of condensation. In some high-end configurations, the heater 10 is used in cooperation with the temperature and humidity controller to achieve precise control of the internal environment of the switch cabinet. When the humidity reaches a certain level, the heater automatically starts to ensure that the internal environment of the cabinet always remains in a suitable state for the operation of the equipment.

[0033] Referring to Figures 4-7 Further, the static contact box 13 is fixedly connected to the inner wall of the cabinet body 1, and the inner wall of the static contact box 13 is fixedly connected with four metal plates 16. The four metal plates 16 form a rhombic vertical cylindrical shape, and two opposite metal plates 16 have a strip-shaped hole 24 formed in the side wall. The strip-shaped hole 24 is provided with a plurality of strip-shaped holes.

[0034] It should be noted that when the elastic member 19 is a telescopic spring, its material can be selected from high-temperature-resistant metal or non-metallic elastic material. Before installing the static contact 15, the sleeve ring 23 can be first sleeved on the outer wall of the static contact 15 and clamped in the inner part of the clamping block 22 to limit the sleeve ring 23 from falling off. The sensor 18 is electrically connected to the controller. The sensor 18 can transmit the vibration frequency to the controller (the sensor 18 can be a speed sensor or a displacement sensor, but is not limited to the above-mentioned sensor 18). Thus, according to the analysis data, the corresponding feedback can be made in time. The static contact box 13 is directly fixedly installed in the inside of the cabinet body 1. Under normal circumstances, the impact ball 17 on the inner side of the metal plate 16 does not contact the inner wall. However, when the static contact 15 starts to loosen, irregular mechanical vibration will be produced due to the influence of the current. At this time, the elastic member 19 will drive the lower impact ball 17 to shake irregularly and start to impact the side wall of the metal plate 16. The metal plate 16 and the impact ball 17 are made of copper or aluminum material. Therefore, when they impact each other, a loud noise will be produced. The strip-shaped hole 24 can effectively increase the diffusion of the audio frequency to remind the relevant personnel to overhaul. At this time, the sensor 18 will also send an irregular vibration signal to the controller to make the indicator light flicker. In addition, when the impact ball 17 is installed to the inner side of the metal plate 16, the static contact 15 can be directly inserted into the inner wall of the static contact box 13 by pushing the movable bottom plate 7. As the movement proceeds, the metal plate 16 will extrude the impact ball 17, so that the elastic member 19 is bent. As the movement gradually deepens, the metal plate 16 will pass from the lower end of the impact ball 17, so as to place the impact ball 17 inside the plurality of metal plates 16. The same is true when the static contact 15 is removed. Through the monitoring of the above process, maintenance can be carried out in time to ensure the normal use of the closing switch. The device is mainly suitable for 10 kilovolt or 35 kilovolt switch cabinets.

[0035] It should be noted that the specific model of the sensor needs to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0036] The preferred embodiments of the present application have been described above, and are not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A substation closing device with insulation protection, comprising a cabinet body (1), one end of the cabinet body (1) is provided with a control panel (3) and a front door plate (4), the inside of the cabinet body (1) is provided with a circuit breaker handcart (6) and a circuit breaker plug (11), characterized in that, One end of the circuit breaker plug (11) is provided with a static contact (15) and a collar (23), the elastic element (19) is connected to the collar (23), one end of the elastic element (19) is provided with a ball (17) and a sensor (18), the inside of the cabinet (1) is provided with a static contact box (13), the inside of the static contact box (13) is provided with a metal plate (16), the static contact (15) is cylindrically arranged, the outer wall of the static contact (15) is fixedly connected with a clamping block (22), the collar (23) is made of rubber material, the collar (23) is sleeved in the clamping block (22), the outer wall of the collar (23) is fixedly connected with the elastic element (19), the end of the elastic element (19) away from the collar (23) is fixedly connected with the ball (17), the inside of the ball (17) is provided with a cavity, the inner wall of the ball (17) is fixedly connected with the sensor (18).

2. A substation closing device with insulation protection according to claim 1, characterized in that, The control panel (3) and the front door panel (4) are rotatably connected with the front end of the cabinet (1), and the control panel (3) is connected with an opening and closing switch (2).

3. A substation closing device with insulation protection according to claim 1, characterized in that, The inside of the cabinet (1) is provided with a relay instrument room (5), a circuit breaker compartment (8), a cable room (12) and a bus compartment (14).

4. A substation closing device with insulation protection according to claim 3, characterized in that, The inside of the circuit breaker compartment (8) is provided with a partition plate (9), the partition plate (9) is fixedly connected with the inner wall of the cabinet (1), a movable base (7) is slidably connected above the partition plate (9), the upper end of the movable base (7) is fixedly connected with a circuit breaker trolley (6), a heater (10) is fixedly connected on one side of the circuit breaker trolley (6), and the heater (10) is fixedly connected with the circuit breaker plug (11).

5. A substation closing device with insulation protection according to claim 1, characterized in that, One end of the circuit breaker plug (11) is fixedly connected with a connecting rod (21), the outer wall of the connecting rod (21) is movably connected with the static contact (15), and the connecting rod (21) is screwedly connected with a fixing nut (20), and the circuit breaker plug (11) and the static contact (15) are fixedly connected through the connecting rod (21) and the fixing nut (20).

6. A substation closing device with insulation protection according to claim 1, characterized in that, The static contact box (13) is fixedly connected with the inner wall of the cabinet (1), the inner wall of the static contact box (13) is fixedly connected with a metal plate (16), the metal plate (16) is provided with four, four metal plates (16) form a rhombic vertical cylinder shape, two opposite metal plates (16) are provided with a strip-shaped hole (24), and the strip-shaped hole (24) is provided with a plurality of strip-shaped holes (24).

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