A 10kV medium voltage generator overhead line quick interface device

Abstract

The invention discloses a 10kV medium-voltage power generation vehicle overhead line quick interface device, which comprises a circuit breaker box, a bypass cable quick plug is arranged on the side wall of the circuit breaker box, an overhead line access pile head is arranged on the other side wall of the circuit breaker box, an arc-shaped introduction groove is arranged at the connection between the side wall of the circuit breaker box and the bypass cable quick plug, a quick socket is arranged in the arc-shaped introduction groove, a conductive rod is connected to one end of the quick socket, a moving contact piece contacts the moving contact, an arc extinguishing chamber is arranged at the side end of the conductive rod, the overhead line access pile head is connected to the pile head socket, and the connection versatility and convenience are improved; the bypass cable can be hung with the power generation vehicle, which is convenient for the all-weather access of the medium-voltage power generation vehicle, and the safe distance between the personnel plugging and unplugging the cable and the electrified part is fully guaranteed; the bypass cable can be connected by plugging into the interface only, and no additional fixation is required, so that the joint insertion process is smoother; the overhead line access pile head and the bypass cable quick plug are separately arranged in parallel, the layout is more reasonable, and the overall structure is compact.

Description

Technical Field

[0001] The invention relates to the technical field of electric power, and in particular to a 10kV medium-voltage generator vehicle overhead line quick interface device. Background Art

[0002] At present, the weight of a 10kV medium-voltage generator vehicle (1000kW) is about 30 tons, and its passage and parking are greatly affected by roads and bridges. The medium-voltage generator vehicle is usually connected to the 10kV overhead line by hanging the on-board bypass cable on the 10kV overhead line in a live operation mode. When encountering rainy and foggy days that are not suitable for live operations, the medium-voltage power generation vehicle will not be able to connect to the power grid for operation because the bypass cable cannot be hung. Application number: CN201711385301.0 A quick interface device for transmitting ultra-large currents, including a seat body with a horizontal plug-in interface on the side wall, a first electrode block and a third electrode block are respectively arranged at the bottom and top of the horizontal plug-in interface, a first arc guide groove is arranged at the bottom of the third electrode block, and a second arc guide groove is arranged at the top of the first electrode block. A longitudinal through cavity connected to the horizontal plug-in interface is arranged at the bottom of the seat body, and a movable clamping block and a spring base are arranged in the longitudinal through cavity. A plug rod is arranged at the bottom of the movable clamping block, and a plug hole matching the plug rod is arranged at the top of the spring base. A disc spring is sleeved on the plug rod, and the top of the movable clamping block is connected to the first electrode block. Connecting rod shafts extending from the first waist-shaped holes on both sides of the seat body are respectively arranged on both sides of the spring base, and lifting structures connected to the connecting rod shafts are respectively arranged on both sides of the seat body.

[0003] Currently, the equipment has the following problems: it is heavy, and is not completely universal. The installation of the adapter is cumbersome, and it cannot be accessed around the clock. When operators plug and unplug cables, they cannot maintain a safe distance from live parts, and the contact is not sensitive, resulting in excessive contact resistance or even poor contact. Currently, there is no quick interface device for 10kV medium-voltage generator vehicles. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a 10kV medium-voltage generator car overhead line quick interface device which can be connected to overhead lines around the clock, is fully universal and has sensitive contact, has a more reasonable layout, and ensures that operators can maintain a safe distance from live parts when plugging and unplugging cables.

[0005] In order to solve the above technical problems, the present invention provides a 10kV medium-voltage power generation vehicle overhead line quick interface device, which comprises a circuit breaker box, a bypass cable quick plug is arranged on the side wall of the circuit breaker box, and an overhead line access pile head is arranged on the other side wall of the circuit breaker box; a main shaft and a fork piece are arranged in the circuit breaker box, a current transformer is arranged between the main shaft and the fork piece, and a voltage sensor is arranged at the lower end of the current transformer; an arc-shaped introduction groove is provided at the connection between the side wall of the circuit breaker box and the bypass cable quick plug, a quick socket is provided in the arc-shaped introduction groove, the quick socket is connected to the bypass cable quick plug, one end of the quick socket is connected to a conductive rod, the end of the conductive rod is evenly provided with moving contact pieces, and the outer periphery of the conductive rod is covered with a moving contact. The moving contact piece is in contact with the moving contact, the conductive rod is connected to the fork piece through a nut fixing, and the fork piece is fixedly connected to the main shaft; the bypass cable quick plug includes a conductive ring, an isolation ring and a damping ring, the isolation ring and the damping ring are mutually covered, the damping ring is extended with a cable quick plug ring seat, the cable quick plug ring seat is provided with a metal transition guide tube, and the metal transition guide tube is connected to the cable wiring body; the side end of the conductive rod is provided with an arc extinguishing chamber, the arc extinguishing chamber is inserted with a static contact finger and a static contact, the static contact is sleeved on the static contact finger, one end of the static contact is provided with a pile head socket, the periphery of the pile head socket is covered with a phase current transformer, the overhead line access pile head is connected to the pile head socket, and the overhead line access pile head is provided with a processing cable;

[0006] Preferably, a switch control mechanism is provided at the outer side end of the circuit breaker box, and the switch control mechanism includes a switch mechanism box and a switch member arranged on the switch mechanism box. The switch mechanism box is equipped with an energy storage handle member, a display opening and closing pointer and an opening and closing handle for indicating the energy storage state.

[0007] Preferably, a mechanism cover is provided inside the switch control mechanism, a mechanism mounting plate is provided at the connection between the switch control mechanism and the circuit breaker box, an electric mechanism is fixedly provided at the outer end of the switch control mechanism, a mechanism crank arm and a buffer roller shaft are provided on the electric mechanism, a main shaft crank arm part is fixed to one end of the mechanism crank arm, a mechanism opening spring part is connected to the main shaft crank arm part, an overtravel roller is provided at the end of the main shaft crank arm part, and a buffer is connected to the lower end of the overtravel roller.

[0008] Preferably, the current transformer is provided with a transformer insulation sleeve, and the transformer insulation sleeve is used to protect the current transformer.

[0009] Preferably, a contact finger spring is provided at the junction of the static contact finger and the static contact head, and the contact finger spring is arranged around the static contact finger and completely covers the static contact finger.

[0010] Preferably, an explosion-proof head plate cover is installed on the side wall of the circuit breaker box, and a mechanism cover sealing ring is sealed on the side wall of the switch control mechanism.

[0011] Preferably, a casing pressure plate is further provided between the overhead line access pile head and the pile head socket, and the casing pressure plate includes a first casing pressure plate and a second casing pressure plate, which are respectively laid around the overhead line access pile head.

[0012] Preferably, at least three groups of bypass cable quick plugs are provided, a gear slot is provided at the tail end of the bypass cable quick plug, and at least three groups of overhead line access pile heads are provided.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] It is convenient for all-weather access to the medium-voltage generator truck. The left bushing is the bypass cable quick plug, and the right bushing is the overhead line access pile head. Refer to the typical installation of the switch on the distribution network pole. In order to facilitate the access to the bypass cable in non-live operation mode, when the switch is connected to the overhead line, a single-pole knife switch is installed on each phase, and a clear disconnection point is formed by the knife switch, and the safe distance between the operator and the energized part when plugging and unplugging the cable is guaranteed, so that the complex live operation of live access to the bypass cable is transformed into a simple power outage operation and the switching operation of power transfer, which is convenient for county companies without complex live operation qualifications to carry out such operations.

[0015] Through the 10kV medium-voltage generator overhead line quick interface device of the present application, the versatility and convenience of the connection between the bypass cable and the 10kV medium-voltage generator are improved; when encountering rainy and foggy days and other weather conditions that are not suitable for live operations, the bypass cable can be connected to the generator, and the medium-voltage generator can be smoothly connected to the power grid for operation, which is convenient for all-weather access to the medium-voltage generator. When the switch is connected to the overhead line, a single-pole knife switch is installed on each phase, and an obvious disconnection point is formed by the knife switch, which can fully ensure the safe distance between the operator and the energized part when plugging and unplugging the cable, so that the complex live operation of live access to the bypass cable is transformed into a simple power outage operation and a switching operation for transferring power supply, which is convenient for companies without complex live operations to carry out such operations. The bypass cable can be connected simply by plugging it into the interface, without the need for additional fixation. The bypass cable quick plug cooperates with the arc-shaped introduction groove, and the overhead line access pile head and the pile head socket are connected and fit together, which can make the connector insertion process smoother, thereby improving the connection efficiency. The overhead line access pile head and the bypass cable quick plug are separately and parallelly arranged inside, with a more reasonable layout, a compact overall structure, and reduced weight and volume.

[0016] A switch control mechanism is provided at the outer side end of the circuit breaker box, and the switch control mechanism includes a switch mechanism box and a switch member arranged on the switch mechanism box; a mechanism cover is provided inside the switch control mechanism, and a mechanism mounting plate is provided at the connection between the switch control mechanism and the circuit breaker box; an electric mechanism is fixedly provided at the outer end of the switch control mechanism, and a mechanism crank arm and a buffer roller shaft are provided on the electric mechanism; a main shaft crank arm member is fixedly provided at one end of the mechanism crank arm, and has a control opening and closing function; through the design of the energy storage handle member, the display separation and closing pointer and the separation and closing handle, the control work can be ensured, and the disconnection can provide 10kV continuous medium voltage power generation for the bypass cable quick plug; at the same time, the bypass cable quick plug is designed with the arc-shaped introduction groove, so that the bypass cable quick plug can be fixed in the cable quick plug ring seat, the internal flow is unobstructed, and the installation and maintenance are convenient, and it can work reliably in rainy and foggy days and other weather environments that are not suitable for live work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view and a cross-sectional structural schematic diagram of the 10kV medium-voltage generator overhead line quick interface device of the present invention.

[0018] Figure 2 It is a front cross-sectional structural schematic diagram of the 10kV medium-voltage generator overhead line quick interface device of the present invention.

[0019] Figure 3 The present invention is a schematic cross-sectional structural diagram of a switch control mechanism in a 10kV medium-voltage generator overhead line quick interface device.

[0020] Figure 4 It is a schematic diagram of the side structure of the switch control mechanism in the 10kV medium-voltage generator overhead line quick interface device of the present invention.

[0021] Figure 5 It is a schematic diagram of the side structure of the circuit breaker box in the overhead line quick interface device of a 10kV medium-voltage generator vehicle of the present invention.

[0022] Figure 6 This is another side view of the installation structure of the 10kV medium voltage generator overhead line quick interface device of the present invention.

[0023] Figure 7 This is a schematic diagram of the installation structure of the 10kV medium-voltage generator overhead line quick interface device of the present invention.

[0024] Description of the accompanying drawings:

[0025] 1-circuit breaker box, 2-bypass cable quick plug, 3-overhead line access pile head, 4-switch control mechanism, 111-main shaft, 112-pull fork, 113-current transformer, 114-voltage sensor, 115-quick socket, 116-conductive rod, 117-moving contact piece, 118-nut fixing, 121-transformer insulation sleeve, 122-explosion-proof head plate cover, 123-moving contact, 211-conductive ring, 212-isolating ring, 213-damping ring, 214-cable quick plug ring seat, 215-metal transition guide tube, 216-cable connection body, 217-contact finger Spring, 218-gear slot part, 219-arc-shaped introduction slot, 311-arc extinguishing chamber, 312-static contact finger, 313-static contact, 314-pile socket, 316-processing cable, 317-bushing pressure plate, 411-switch mechanism box, 412-energy storage handle, 413-display opening and closing pointer, 414-opening and closing handle, 415-mechanism cover, 416-mechanism mounting plate, 417-electric mechanism, 418-mechanism crank arm, 419-buffer roller shaft, 420-spindle crank arm, 421-mechanism opening spring, 422-overtravel roller, 423-buffer. DETAILED DESCRIPTION

[0026] In order to unify technical terms, embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the combination or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the positions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0028] See also Figure 1 A 10kV medium-voltage generator overhead line quick interface device, which consists of a circuit breaker box 1, a bypass cable quick plug 2 is provided on the side wall of the circuit breaker box 1, and an overhead line access pile head 3 is provided on the other side wall of the circuit breaker box 1; a main shaft 111 and a fork 112 are arranged in the circuit breaker box 1, a current transformer 113 is provided between the main shaft 111 and the fork 112, and a voltage sensor 114 is provided at the lower end of the current transformer 113;

[0029] See also Figure 1-2 An arc-shaped introduction groove 219 is provided at the connection between the side wall of the circuit breaker box 1 and the bypass cable quick plug 2, and a quick socket 115 is provided in the arc-shaped introduction groove 219. The quick socket 115 is connected to the bypass cable quick plug 2. A conductive rod 116 is connected to one end of the quick socket 115. Moving contact pieces 117 are evenly provided at the end of the conductive rod 116. The conductive rod 116 is covered with a moving contact 123 on its periphery. The moving contact piece 117 is in contact with the moving contact 123. The conductive rod 116 is connected to the fork member 112 through a nut fixing member 118, and the fork member 112 is fixedly connected to the main shaft 111;

[0030] See also Figure 1 The bypass cable quick plug 2 includes a conductive ring 211, an isolation ring 212 and a damping ring 213. The isolation ring 212 and the damping ring 213 are mutually covered. The damping ring 213 has a cable quick-insertion ring seat 214 extending therefrom. A metal transition guide tube 215 is provided on the cable quick-insertion ring seat 214. The metal transition guide tube 215 is connected to the cable wiring body 216. The bypass cable quick plug 2 is provided with at least three groups, and a gear slot portion 218 is provided at the tail end of the bypass cable quick plug 2.

[0031] See also Figure 1 The side end of the conductive rod 116 is provided with an arc extinguishing chamber 311, in which a static contact finger 312 and a static contact 313 are inserted, and the static contact 313 is sleeved on the static contact finger 312, and one end of the static contact 313 is provided with a pile head socket 314, and the outer periphery of the pile head socket 314 is covered with a phase current transformer 315, and the overhead line access pile head 3 is connected to the pile head socket 314, and a processing cable 316 is provided on the overhead line access pile head 3; the current transformer 113 is provided with a transformer insulation sleeve 121. A contact finger spring 217 is provided at the connection between the static contact finger 312 and the static contact 313.

[0032] See also Figure 4 A switch control mechanism 4 is provided at the outer side end of the circuit breaker box 1, and the switch control mechanism 4 includes a switch mechanism box 411 and a switch member arranged on the switch mechanism box 411. The switch mechanism box 411 is equipped with an energy storage handle member 412, a display opening and closing pointer 413 and an opening and closing handle 414 for indicating the energy storage state.

[0033] See also Figure 3A mechanism cover 415 is provided inside the switch control mechanism 4, a mechanism mounting plate 416 is provided at the connection between the switch control mechanism 4 and the circuit breaker box 1, an electric mechanism 417 is fixedly provided at the outer end of the switch control mechanism 4, a mechanism crank arm 418 and a buffer roller shaft 419 are provided on the electric mechanism 417, a main shaft crank arm member 420 is fixedly provided at one end of the mechanism crank arm 418, a mechanism opening spring member 421 is connected to the main shaft crank arm member 420, an overtravel roller 422 is provided at the end of the main shaft crank arm member 420, and a buffer 423 is connected to the lower end of the overtravel roller 422.

[0034] See also Figure 5 An explosion-proof head plate cover 122 is installed on the side wall of the circuit breaker box 1.

[0035] See also Figure 6 A casing pressure plate 317 is also provided between the overhead line access pile head 3 and the pile head socket 314 .

[0036] The operating principle of the device of this application is as follows:

[0037] See also Figure 7 During installation, the left bushing is a bypass cable quick plug, and the right bushing is an overhead line access pile head. When the switch is connected to the overhead line, a single-pole knife switch is installed on each phase, and an obvious disconnection point is formed by the knife switch. It is installed at a suitable position of the branch line without a communication channel. First, the bypass cable quick plug 2 includes a conductive ring 211, an isolation ring 212 and a damping ring 213, which are stacked layer by layer, so that the bypass cable quick plug 2 is firmly connected to the cable. The bypass cable quick plug 2 is inserted through the quick socket 115 under the guidance of the arc-shaped introduction groove 219. The bypass cable quick plug cooperates with the arc-shaped introduction groove and the overhead line access The connection and mutual fit between the pile head and the pile head socket can make the joint insertion process smoother, thereby improving the connection efficiency. The quick socket 115 is connected to the conductive rod 116 for conductivity. The moving contact 123 is covered on the moving contact piece 117. The moving contact piece 117 is connected to the fork piece 112 under screw fixation. The moving contact 123 is inserted into the arc extinguishing chamber 311. The arc extinguishing chamber 311 is inserted with a static contact finger 312 and a static contact 313. The overhead line access pile head 3 is connected to the pile head socket 314. The overhead line access pile head and the bypass cable quick plug are separately arranged in parallel. The layout is more reasonable and the overall structure is compact.

[0038] A switch control mechanism is provided at the outer side end of the circuit breaker box, and the switch control mechanism includes a switch mechanism box and a switch member arranged on the switch mechanism box; it has the function of controlling opening and closing, and can ensure the control of the work through the energy storage handle member, the display opening and closing pointer and the opening and closing handle design, and can provide 10kV continuous medium voltage power generation for the bypass cable quick plug. At the same time, the bypass cable quick plug is designed with the arc-shaped introduction groove, so that the bypass cable quick plug can be fixed in the cable quick plug ring seat, the internal flow of electricity is unobstructed, and the installation and maintenance are convenient, and it can work reliably in rainy and foggy days and other weather environments that are not suitable for live operations.

[0039] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A 10kV medium voltage generator overhead line quick interface device, characterized in that: It comprises a circuit breaker box (1), a bypass cable quick plug (2) is provided on a side wall of the circuit breaker box (1), and an overhead line access pile head (3) is provided on the other side wall of the circuit breaker box (1); a main shaft (111) and a fork member (112) are arranged in the circuit breaker box (1), a current transformer (113) is provided between the main shaft (111) and the fork member (112), and a voltage sensor (114) is provided at the lower end of the current transformer (113); An arc-shaped introduction groove (219) is provided at the connection between the side wall of the circuit breaker housing (1) and the bypass cable quick plug (2), a quick socket (115) is provided in the arc-shaped introduction groove (219), the quick socket (115) is connected to the bypass cable quick plug (2), one end of the quick socket (115) is connected to a conductive rod (116), the end of the conductive rod (116) is evenly provided with movable contact pieces (117), the outer periphery of the conductive rod (116) is covered with a movable contact (123), the movable contact piece (117) is in contact with the movable contact (123), the conductive rod (116) is connected to a fork member (112) via a nut fixing member (118), and the fork member (112) is fixedly connected to the main shaft (111); The bypass cable quick plug (2) comprises a conductive ring (211), an isolation ring (212) and a damping ring (213); the isolation ring (212) and the damping ring (213) are arranged to cover each other; a cable quick plug ring seat (214) is provided on the damping ring (213); a metal transition guide tube (215) is provided on the cable quick plug ring seat (214); and the metal transition guide tube (215) is connected to a cable connection body (216); An arc extinguishing chamber (311) is provided at the side end of the conductive rod (116), a static contact finger (312) and a static contact (313) are inserted into the arc extinguishing chamber (311), the static contact (313) is sleeved on the static contact finger (312), a pile head socket (314) is provided at one end of the static contact (313), the pile head socket (314) is covered with a phase current transformer (315) on its periphery, the overhead line access pile head (3) is connected to the pile head socket (314), and a processing cable (316) is provided on the overhead line access pile head (3).

2. The 10kV medium voltage generator overhead line quick interface device according to claim 1 is characterized in that: A switch control mechanism (4) is provided at an external side end of the circuit breaker box (1); the switch control mechanism (4) comprises a switch mechanism box (411) and a switch component arranged on the switch mechanism box (411); an energy storage handle component (412), a display opening and closing pointer (413) and an opening and closing handle (414) are installed on the switch mechanism box (411) for indicating an energy storage state.

3. The 10kV medium voltage generator overhead line quick interface device according to claim 2 is characterized in that: A mechanism cover (415) is provided inside the switch control mechanism (4); a mechanism mounting plate (416) is provided at the connection between the switch control mechanism (4) and the circuit breaker housing (1); an electric mechanism (417) is fixedly provided at the outer end of the switch control mechanism (4); a mechanism crank arm (418) and a buffer roller shaft (419) are provided on the electric mechanism (417); a main shaft crank arm member (420) is fixedly provided at one end of the mechanism crank arm (418); a mechanism opening spring member (421) is connected to the main shaft crank arm member (420); an overtravel roller (422) is provided at the end of the main shaft crank arm member (420); and a buffer (423) is connected to the lower end of the overtravel roller (422).

4. The 10kV medium voltage generator overhead line quick interface device according to claim 1 is characterized in that: The current transformer (113) is provided with a transformer insulating sleeve (121).

5. The 10kV medium voltage generator overhead line quick interface device according to claim 1 is characterized in that: A contact finger spring (217) is provided at the junction of the stationary contact finger (312) and the stationary contact head (313).

6. The 10kV medium voltage generator overhead line quick interface device according to claim 1 is characterized in that: An explosion-proof head plate cover (122) is installed on the side wall of the circuit breaker box (1).

7. The 10kV medium voltage generator overhead line quick interface device according to claim 1 is characterized in that: A casing pressure plate (317) is also provided between the overhead line access pile head (3) and the pile head socket (314).

8. The 10kV medium voltage generator overhead line quick interface device according to claim 1 is characterized in that: At least three groups of the bypass cable quick plugs (2) are provided, and a gear slot portion (218) is provided at the tail end of the bypass cable quick plug (2).

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