10kV Environmentally Friendly Gas Insulated Ring Main Unit

Abstract

The present invention discloses a 10 kV environmentally friendly gas-insulated ring main unit, which includes a cabinet body, a circuit breaker switch, a disconnector, a circuit breaker mechanism and an isolation mechanism. The cabinet body includes an instrument room, a switch room, a mechanism room, a pressure relief room and a cable room. The instrument room is located at the top of the cabinet body, the switch room and the mechanism room are located in the middle of the cabinet body, the pressure relief room and the cable room are located at the lower part of the cabinet body. The mechanism room is in front of the switch room, and the cable room is in front of the pressure relief room. The circuit breaker mechanism is installed in the mechanism room and is used to trigger the opening and closing of the circuit breaker switch. The isolation mechanism is arranged in the mechanism room and is located below the circuit breaker mechanism, and is used to trigger the opening and closing of the disconnector, which can meet the requirements of five-prevention interlocking, and has a simple and reasonable structural design, small volume and good stability.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage cabinet structures, and particularly to a 10kV environmentally friendly gas-insulated ring main unit. Background Art

[0002] Currently, there are few domestic manufacturers of environmentally friendly insulated cabinets. Most of the interlocking devices use soft interlocks, with complex structures, low reliability, high costs, and large occupied spaces. Summary of the Invention

[0003] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a 10kV environmentally friendly gas-insulated ring main unit, which can meet the requirements of five-prevention interlocking, has high reliability, a simple and reasonable structural design, a small volume, and saves space.

[0004] A 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the first aspect of the present invention includes:

[0005] A cabinet body, including an instrument room, a switch room, a mechanism room, a pressure relief room, and a cable room. The instrument room is located at the top of the cabinet body, the switch room and the mechanism room are located in the middle of the cabinet body, the pressure relief room and the cable room are located at the lower part of the cabinet body, the mechanism room is located in front of the switch room, the cable room is located in front of the pressure relief room, a circuit breaker switch and a disconnector are arranged in the switch room, a cable connection head extends from the lower part of the disconnector towards the cable room, and an explosion-proof valve is arranged between the switch room and the pressure relief room;

[0006] A circuit breaker mechanism, installed in the mechanism room, for triggering the opening and closing of the circuit breaker switch, including a first interlocking rod that will displace downward when the circuit breaker switch operates and a circuit breaker mechanism extended interlocking plate for locking the circuit breaker mechanism. The circuit breaker mechanism extended interlocking plate is arranged at the bottom of the circuit breaker mechanism;

[0007] An isolating mechanism is arranged in the mechanism chamber and below the circuit breaker mechanism, and is used to trigger the opening and closing of the isolating switch, and includes a front support plate and a rear support plate parallel to each other, an isolating switch operating shaft, an earthing switch operating shaft, an interlocking fixing plate, an isolating operating shaft sleeve, an earthing operating shaft sleeve and a cabinet door interlocking device; the isolating switch operating shaft is connected between the front support plate and the rear support plate, and is sleeved with a first gear; the earthing switch operating shaft is connected between the front support plate and the rear support plate, and is sleeved with a second gear, and the second gear is meshed with the first gear; the interlocking fixing plate is fixed to the back of the front support plate, and is provided with an isolating operating hole corresponding to the isolating switch operating shaft and an isolating operating hole corresponding to the earthing switch operating shaft. The grounding operation hole of the switch operating shaft; the isolation operation shaft sleeve is sleeved on the front end of the isolation switch operating shaft and corresponds to the isolation operation hole, and is provided with an isolation clearance hole for inserting the operating rod; the grounding operation shaft sleeve is sleeved on the front end of the grounding switch operating shaft and corresponds to the grounding operation hole, and is provided with a grounding clearance hole for inserting the operating rod; the grounding operation hole is located on the left side of the isolation operation hole, the left part of the grounding operation hole is correspondingly set as the grounding switch isolation position, and the right part of the grounding operation hole is correspondingly set as the grounding switch grounding position; the left part of the isolation operation hole is correspondingly set as the isolation switch isolation position, and the right part of the isolation operation hole is correspondingly set as the isolation switch working position; the grounding clearance hole is rotated to the corresponding When the grounding switch is in the grounding position, the isolation clearance hole rotates to the left side corresponding to the isolation position of the isolation switch; when the grounding clearance hole rotates to the isolation position corresponding to the grounding switch, the isolation clearance hole rotates to the isolation position corresponding to the isolation switch; when the grounding clearance hole rotates to the left side corresponding to the isolation position of the grounding switch, the isolation clearance hole rotates to the working position corresponding to the isolation switch; the lower end of the first interlocking rod extends to the top of the isolation switch working position, if the isolation clearance hole rotates to the working position corresponding to the isolation switch and the circuit breaker is closed, the lower end of the first interlocking rod is inserted into the isolation clearance hole; the rear end of the isolation switch operating shaft is provided with a circuit breaker locking trigger block The circuit breaker locking trigger block is a circular block with a notch, and a second interlocking plate is fixed below the interlocking plate extending out of the circuit breaker mechanism, and the lower end of the second interlocking plate is pressed against the notch of the circuit breaker locking trigger block; the cabinet door interlocking device includes an intermediate fixing plate installed on the operating shaft of the grounding switch, a cabinet door interlocking pressure plate connected to the intermediate fixing plate, and a cabinet door interlocking trigger arc block connected to the cabinet door interlocking pressure plate, the cable room is provided with a cable room cabinet door, and the top of the cable room cabinet door is provided with a cabinet door locking hole, and a cabinet door locking rod fixed to the cabinet body is provided above the cabinet door locking hole, and the top of the cabinet door locking rod is provided with a cabinet door interlocking roller located below the cabinet door interlocking trigger arc block.

[0008] A 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention has at least the following beneficial effects: By separately providing a disconnector operating shaft and an earthing switch operating shaft, the disconnector operating shaft and the earthing switch operating shaft are linked through a first gear and a second gear, and an isolation operation hole and an earthing operation hole are provided on an interlock fixing plate. If it is currently in a powered-on state, that is, the disconnector is in a working state, the isolation relief hole is aligned with the working position of the disconnector and the earthing relief hole is aligned with the left side of the earthing switch isolation position, and the operating rod cannot be inserted into the earthing operation hole to prevent earthing the earthing switch while the disconnector is energized; If power needs to be cut off, the circuit breaker needs to be disconnected first, then the operating rod is inserted into the isolation operation hole, and the operating rod is rotated counterclockwise so that the isolation relief hole is aligned with the isolation position of the disconnector. At the same time, the earthing relief hole also rotates to align with the isolation position of the earthing switch. At this time, the operating rod can be inserted into the earthing operation hole, and it is rotated clockwise so that the earthing relief hole is aligned with the earthing position of the earthing switch, and at the same time the isolation relief hole also rotates to align with the left side of the isolation position of the disconnector. At this time, it is in an earthed state and the isolation relief hole is misaligned with the isolation operation hole, and the operating rod cannot be inserted into the isolation operation hole to prevent misclosing the disconnector; When the isolation relief hole rotates to the corresponding working position of the disconnector and the circuit breaker is closed, the lower end of the first interlock rod is inserted into the isolation relief hole to prevent disconnecting the disconnector while it is energized; The lower end of the second interlock plate presses against the notch of the circuit breaker locking trigger block. After the disconnector is disconnected, the second interlock plate lifts the second interlock plate, causing the circuit breaker mechanism to extend and the interlock plate to move upward to lock the circuit breaker, preventing misclosing the circuit breaker; After the disconnector is closed, the cabinet door interlock trigger arc block presses down the cabinet door interlock roller, driving the cabinet door locking rod to be inserted into the cabinet door locking hole, preventing the cable chamber cabinet door from being opened, avoiding entering a live compartment by mistake, meeting the requirements of five-prevention interlock, and having a simple and reasonable structural design, small volume, and good stability.

[0009] According to some embodiments of the present invention, the circuit breaker switch includes a circuit breaker hexagonal drive main shaft connected to the circuit breaker mechanism, a drive crank arm provided on the circuit breaker hexagonal drive main shaft, an upper connecting copper bar, a flexible connection, a vacuum interrupter, and a copper bar fixing plate. The drive crank arm is connected to the upper connecting copper bar through the flexible connection. The upper connecting copper bar is connected to the upper end of the vacuum interrupter, and the copper bar fixing plate is connected to the lower end of the vacuum interrupter.

[0010] According to some embodiments of the present invention, a vacuum tube anti-climbing umbrella skirt is provided outside the vacuum interrupter.

[0011] According to some embodiments of the present invention, the disconnector includes a disconnector hexagonal drive main shaft connected to the isolation mechanism, a disconnector static knife seat provided on the disconnector hexagonal drive main shaft, a drive connecting plate, and a disconnector moving knife head. The disconnector static knife seat is connected to the disconnector moving knife head through the drive connecting plate.

[0012] According to some embodiments of the present invention, a pressure relief valve is provided between the pressure relief chamber and the cable chamber.

[0013] According to some embodiments of the present invention, a hole position baffle is further provided between the front support plate and the interlock fixing plate. The hole position baffle extends a push rod towards the front support plate. A horizontal long hole for the left - right movement of the push rod is provided on the front support plate. When the push rod is pushed to the left side of the horizontal long hole, the hole position baffle blocks the grounding operation hole and exposes the isolation operation hole. When the push rod is pushed to the right side of the horizontal long hole, the hole position baffle blocks the isolation operation hole and exposes the grounding operation hole. By setting the hole position baffle, only the isolation operation hole or the grounding operation hole can be exposed each time, so that the operator can further clarify whether the disconnector or the earthing switch is being operated currently, avoiding mistakes.

[0014] According to some embodiments of the present invention, an upper positioning block and a lower positioning block are respectively provided on the upper and lower sides of the hole position baffle. The upper parts of the front support plate, the upper positioning block and the interlock fixing plate are fixed together by screws. The lower parts of the front support plate, the lower positioning block and the interlock fixing plate are fixed together by screws. The upper positioning block, the lower positioning block, the front support plate and the interlock fixing plate enclose a chamber for placing the hole position baffle.

[0015] According to some embodiments of the present invention, the isolation mechanism further includes an isolation micro - switch and an earthing micro - switch for controlling the status indicator lights, a micro - switch trigger plate for triggering the isolation micro - switch and the earthing micro - switch, and an auxiliary switch crank arm for driving the rotation of the micro - switch trigger plate. The isolation micro - switch and the earthing micro - switch are fixed on the rear support plate through a micro - switch mounting plate. Micro - switch trigger blocks are provided on the left and right sides of the micro - switch trigger plate. The middle part of the micro - switch trigger plate is hinged on the micro - switch mounting plate. One end of the auxiliary switch crank arm is connected to the micro - switch trigger plate, and the other end is connected to the rear end of the earthing switch operating shaft. When the earthing switch operating shaft rotates to switch the state, the auxiliary switch crank arm drives the micro - switch trigger plate to move, so that the micro - switch trigger block triggers the isolation micro - switch or the earthing micro - switch, realizing the control of the status of the indicator light.

[0016] According to some embodiments of the present invention, a first interlock reset mechanism is further included. The first interlock reset mechanism includes a first reset support rod and a first reset spring. A first long hole is provided on the first interlock rod. One end of the first reset support rod is fixed on the cabinet body, and the other end passes through the first long hole and is connected to the first interlock rod through the first reset spring.

[0017] According to some embodiments of the present invention, it further includes a cabinet door locking and reset mechanism. The cabinet door locking and reset mechanism includes a second reset support rod and a second reset spring fixed on the cabinet body. A second long hole is provided on the cabinet door locking rod, and a reset pin passing through the second long hole is provided on the second reset support rod. The reset pin is connected to the cabinet door locking rod through the second reset spring. When the cabinet door interlock trigger arc block no longer presses down the cabinet door interlock roller, the cabinet door locking rod can be reset by the elastic force applied by the second reset spring and no longer inserted into the cabinet door locking hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments;

[0019] Figure 1 It is an overall schematic diagram of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of another angle of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of yet another angle of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the interlock of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0023] Figure 5 It is an overall schematic diagram of the isolation mechanism of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the isolation mechanism of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of another angle structure of the isolation mechanism of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the cabinet door interlock device of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention;

[0027] Figure 9 It is a schematic diagram of the circuit breaker switch and disconnector structure of a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0030] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0032] Refer to Figures 1-6 , a 10kV environmentally friendly gas-insulated ring main unit according to an embodiment of the present invention includes:

[0033] A cabinet body 900, including an instrument room 920, a switch room 930, a mechanism room 940, a pressure relief room 950, and a cable room 960. The instrument room 920 is located at the top of the cabinet body. The switch room 930 and the mechanism room 940 are located in the middle of the cabinet body. The pressure relief room 950 and the cable room 960 are located at the lower part of the cabinet body. The mechanism room 940 is located in front of the switch room 930. The cable room 960 is located in front of the pressure relief room 950. A circuit breaker switch 931 and a disconnector switch 932 are arranged in the switch room 930. A cable terminal 961 extends from the lower part of the disconnector switch 932 towards the cable room 960. An explosion-proof valve 933 is arranged between the switch room 930 and the pressure relief room 950;

[0034] The circuit breaker mechanism 910, installed in the mechanism chamber 940, is used to trigger the opening and closing of the circuit breaker switch 931, and includes a first interlocking rod 911 that will displace downward when the circuit breaker switch 931 operates, and a circuit breaker mechanism extended interlocking plate 912 for locking the circuit breaker mechanism 910. The circuit breaker mechanism extended interlocking plate 912 is arranged at the bottom of the circuit breaker mechanism 910;

[0035] An isolating mechanism is arranged in the mechanism chamber 940 and below the circuit breaker mechanism for triggering the opening and closing of the disconnector 932. It includes a front support plate 100 and a rear support plate 200 that are parallel to each other, a disconnector operating shaft 300, an earthing switch operating shaft 400, an interlock fixing plate 500, a disconnector operating shaft sleeve 320, an earthing operating shaft sleeve 420, and a cabinet door interlock device. The disconnector operating shaft 300 spans between the front support plate 100 and the rear support plate 200 and is sleeved with a first gear 310. The earthing switch operating shaft 400 spans between the front support plate 100 and the rear support plate 200 and is sleeved with a second gear 410, and the second gear 410 meshes with the first gear 310. The interlock fixing plate 500 is fixed to the back of the front support plate 100 and is provided with a disconnector operating hole 510 corresponding to the disconnector operating shaft 300 and an earthing operating hole 520 corresponding to the earthing switch operating shaft 400. The disconnector operating shaft sleeve 320 is sleeved on the front end of the disconnector operating shaft 300 and corresponds to the disconnector operating hole 510, and is provided with a disconnector relief hole 321 for inserting an operating rod. The earthing operating shaft sleeve 420 is sleeved on the front end of the earthing switch operating shaft 400 and corresponds to the earthing operating hole 520, and is provided with an earthing relief hole 421 for inserting an operating rod. The earthing operating hole 520 is located on the left side of the disconnector operating hole 510. The left part of the earthing operating hole 520 is correspondingly set as the earthing switch isolation position, and the right part of the earthing operating hole 520 is correspondingly set as the earthing switch earthing position. The left part of the disconnector operating hole 510 is correspondingly set as the disconnector isolation position, and the right part of the disconnector operating hole 510 is correspondingly set as the disconnector working position. When the earthing relief hole 421 rotates to correspond to the earthing switch earthing position, the disconnector relief hole 321 rotates to the left of the corresponding disconnector isolation position. When the earthing relief hole 421 rotates to correspond to the earthing switch isolation position, the disconnector relief hole 321 rotates to the corresponding disconnector isolation position. When the earthing relief hole 421 rotates to the left of the corresponding earthing switch isolation position, the disconnector relief hole 321 rotates to the corresponding disconnector working position. The lower end of the first interlock rod 911 extends above the disconnector working position. If the disconnector relief hole 321 rotates to the corresponding disconnector working position and the circuit breaker is closed, the lower end of the first interlock rod 911 is inserted into the disconnector relief hole 321. A circuit breaker locking trigger block 330 is arranged at the rear end of the disconnector operating shaft 300. The circuit breaker locking trigger block 330 is a circular block with a notch. A second interlock plate 913 is fixed below the extension of the circuit breaker mechanism out of the interlock plate 912, and the lower end of the second interlock plate 913 presses against the notch of the circuit breaker locking trigger block 330.The cabinet door interlocking device includes an intermediate fixing plate 810 installed on the grounding switch operating shaft 400, a cabinet door interlocking pressure plate 820 connected to the intermediate fixing plate 810, and a cabinet door interlocking trigger arc block 830 connected to the cabinet door interlocking pressure plate 820. The cable room 960 is provided with a cable room cabinet door 840. The top of the cable room cabinet door 840 is provided with a cabinet door locking hole 841. A cabinet door locking rod 850 fixed to the cabinet body 900 is provided above the cabinet door locking hole 841. The top of the cabinet door locking rod 850 is provided with a cabinet door interlocking roller 860 located below the cabinet door interlocking trigger arc block 830. ;

[0036] According to an embodiment of the present invention, a 10kV environmentally friendly gas insulated ring network cabinet is provided. An isolating switch operating shaft 300 and an earthing switch operating shaft 400 are respectively provided. The isolating switch operating shaft 300 and the earthing switch operating shaft 400 are linked by a first gear 310 and a second gear 410. An isolating operating hole 510 and an earthing operating hole 520 are provided on an interlocking fixing plate 500. If the isolating switch is currently in a power-on state, that is, the isolating switch is in a working state, the isolating clearance hole 321 is aligned with the isolating switch working position and the earthing clearance hole 421 is aligned with the left side of the earthing switch isolation position. The operating rod cannot be inserted into the earthing operating hole 520 to prevent the earthing switch from being energized. If power is to be cut off, the operating rod must be inserted into the isolating operating hole 510 after the circuit breaker is disconnected, and the operating rod must be rotated counterclockwise so that the isolating clearance hole 321 is aligned with the isolating switch isolation position. At the same time, the earthing clearance hole 421 is also rotated to align with the earthing switch isolation position. At this time, the operating rod can be inserted into the earthing operating hole 520 and rotated clockwise so that the earthing clearance hole 421 is aligned with the earthing switch earthing position. At the same time, the isolation clearance hole 321 is also rotated to align with the left side of the isolation position of the isolating switch. At this time, it is in the grounding state and the isolation clearance hole 321 is misaligned with the isolation operation hole 510. The operating rod cannot be inserted into the isolation operation hole 510 to prevent the isolating switch from being closed by mistake; the isolation clearance hole 321 is rotated to the corresponding isolating switch working position and the circuit breaker is closed, and the lower end of the first interlocking rod 911 is inserted into the isolation clearance hole 321 to prevent the isolating switch from being disconnected with power on; the lower end of the second interlocking plate 913 is pressed against the circuit breaker locking trigger block 3 At the gap of 30, after the isolating switch is disconnected, the second interlocking plate 913 lifts up the second interlocking plate 913, so that the circuit breaker mechanism extends out of the interlocking plate 912 to move up and lock the circuit breaker to prevent the circuit breaker from being closed by mistake; after the isolating switch is closed, the cabinet door interlock triggers the arc block 830 to press down the cabinet door interlock roller 860, driving the cabinet door locking rod 850 to insert into the cabinet door locking hole 841, preventing the cable room cabinet door 840 from being opened, avoiding accidentally entering the live interval, meeting the requirements of the five-protection interlock, and the structural design is simple and reasonable, small in size, and good in stability.

[0037] Reference Figure 9, in some embodiments of the present invention, the circuit breaker switch 931 includes a circuit breaker hexagonal drive main shaft 9311 connected to the circuit breaker mechanism 910, a drive crank arm 9312 provided on the circuit breaker hexagonal drive main shaft 9311, an upper connecting copper bar 9313, a flexible connection 9314, a vacuum interrupter 9315, and a copper bar fixing plate 9316. The drive crank arm 9312 is connected to the upper connecting copper bar 9313 through the flexible connection 9314. The upper connecting copper bar 9313 is connected to the upper end of the vacuum interrupter 9315, and the copper bar fixing plate 9316 is connected to the lower end of the vacuum interrupter 9315.

[0038] Referring to Figure 9 , in some embodiments of the present invention, a vacuum tube anti - creep umbrella skirt 9317 is provided outside the vacuum interrupter 9315.

[0039] Referring to Figure 9 , in some embodiments of the present invention, the disconnecting switch 932 includes a disconnecting switch hexagonal drive main shaft 9321 connected to the isolating mechanism, a disconnecting switch static knife holder 9322 provided on the disconnecting switch hexagonal drive main shaft 9321, a drive connecting plate 9323, and a disconnecting switch moving knife head 9324. The disconnecting switch static knife holder 9322 is connected to the disconnecting switch moving knife head 9324 through the drive connecting plate 9323.

[0040] Referring to Figure 1 , in some embodiments of the present invention, a pressure relief valve 951 is provided between the pressure relief chamber 950 and the cable chamber 960.

[0041] Referring to Figure 6 and Figure 7 , in some embodiments of the present invention, a hole position baffle 600 is further provided between the front support plate 100 and the interlock fixing plate 500. The hole position baffle 600 extends a push rod 610 towards the front support plate 100. A horizontal long hole 110 for the left - right movement of the push rod 610 is provided on the front support plate 100. When the push rod 610 is pushed to the left side of the horizontal long hole 110, the hole position baffle 600 blocks the grounding operation hole 520 and exposes the isolating operation hole 510. When the push rod 610 is pushed to the right side of the horizontal long hole 110, the hole position baffle 600 blocks the isolating operation hole 510 and exposes the grounding operation hole 520. By providing the hole position baffle 600, only the isolating operation hole 510 or the grounding operation hole 520 can be exposed each time, so that the operator can further clarify whether they are currently operating the disconnecting switch or the grounding switch, avoiding mistakes.

[0042] Referring to Figure 6 and Figure 7, in some embodiments of the present invention, an upper positioning block 620 and a lower positioning block 630 are respectively arranged on the upper and lower sides of the hole position baffle 600. The upper parts of the front support plate 100, the upper positioning block 620 and the interlock fixing plate 500 are fixed together by screws, and the lower parts of the front support plate 100, the lower positioning block 630 and the interlock fixing plate 500 are fixed together by screws. The upper positioning block 620, the lower positioning block 630, the front support plate 100 and the interlock fixing plate 500 enclose a chamber for placing the hole position baffle 600.

[0043] Refer to Figure 7 , in some embodiments of the present invention, the isolation mechanism further includes an isolation microswitch 710 and a grounding microswitch 720 for controlling the status indicator lights, a microswitch trigger plate 730 for triggering the isolation microswitch 710 and the grounding microswitch 720, and an auxiliary switch crank arm 740 for driving the microswitch trigger plate 730 to rotate. The isolation microswitch 710 and the grounding microswitch 720 are fixed on the rear support plate 200 through a microswitch mounting plate 750. Microswitch trigger blocks 731 are arranged on the left and right sides of the microswitch trigger plate 730. The middle part of the microswitch trigger plate 730 is hinged on the microswitch mounting plate 750. One end of the auxiliary switch crank arm 740 is connected to the microswitch trigger plate 730, and the other end is connected to the rear end of the grounding switch operating shaft 400. When the grounding switch operating shaft 400 rotates to switch the state, the microswitch trigger plate 730 is driven to move through the auxiliary switch crank arm 740, so that the microswitch trigger block 731 triggers the isolation microswitch 710 or the grounding microswitch 720, realizing the state control of the indicator lights.

[0044] Refer to Figure 3 and Figure 4 , in some embodiments of the present invention, a first interlock reset mechanism is further included. The first interlock reset mechanism includes a first reset support rod 914 and a first reset spring 915. A first long hole 916 is arranged on the first interlock rod 911. One end of the first reset support rod 914 is fixed on the cabinet 900, and the other end passes through the first long hole 916 and is connected to the first interlock rod 911 through the first reset spring 915.

[0045] Refer to Figure 2 and Figure 7, in some embodiments of the present invention, it further includes a cabinet door locking and reset mechanism. The cabinet door locking and reset mechanism includes a second reset support rod 870 fixed on the cabinet body 900 and a second reset spring 880. A second long hole 851 is provided on the cabinet door locking rod 850, and a reset pin 871 passing through the second long hole 851 is provided on the second reset support rod 870. The reset pin 871 is connected to the cabinet door locking rod 850 through the second reset spring 880. When the cabinet door interlock trigger arc block 830 no longer presses down the cabinet door interlock roller 860, the cabinet door locking rod 850 can be reset by the elastic force applied by the second reset spring 880 and no longer inserted into the cabinet door locking hole 841.

[0046] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A 10kV environmentally friendly gas-insulated ring main unit, characterized in that, Comprising: Cabinet body, including an instrument room, a switch room, a mechanism room, a pressure relief room and a cable room. The instrument room is located at the top of the cabinet body, the switch room and the mechanism room are located in the middle of the cabinet body, the pressure relief room and the cable room are located at the lower part of the cabinet body. The mechanism room is in front of the switch room, the cable room is in front of the pressure relief room. A circuit breaker switch and a disconnecting switch are arranged in the switch room. A cable terminal extends from the lower part of the disconnecting switch towards the cable room. An explosion-proof valve is arranged between the switch room and the pressure relief room; Circuit breaker mechanism, installed in the mechanism room, used to trigger the opening and closing of the circuit breaker switch, including a first interlocking rod that will displace downward when the circuit breaker switch operates and a circuit breaker mechanism extended interlocking plate for locking the circuit breaker mechanism. The circuit breaker mechanism extended interlocking plate is arranged at the bottom of the circuit breaker mechanism; An isolating mechanism is arranged in the mechanism chamber and below the circuit breaker mechanism, and is used to trigger the opening and closing of the disconnector. It includes a front support plate and a rear support plate that are parallel to each other, a disconnector operating shaft, an earthing switch operating shaft, an interlock fixing plate, a disconnector operating shaft sleeve, an earthing operating shaft sleeve, and a cabinet door interlock device; the disconnector operating shaft straddles between the front support plate and the rear support plate and is sleeved with a first gear; the earthing switch operating shaft straddles between the front support plate and the rear support plate and is sleeved with a second gear, and the second gear meshes with the first gear; the interlock fixing plate is fixed on the back of the front support plate, and is provided with a disconnector operating hole corresponding to the disconnector operating shaft and an earthing operating hole corresponding to the earthing switch operating shaft; the disconnector operating shaft sleeve is sleeved on the front end of the disconnector operating shaft and corresponds to the disconnector operating hole, and is provided with a disconnector relief hole for the operating rod to insert; the earthing operating shaft sleeve is sleeved on the front end of the earthing switch operating shaft and corresponds to the earthing operating hole, and is provided with an earthing relief hole for the operating rod to insert; the earthing operating hole is located on the left side of the disconnector operating hole, the left part of the earthing operating hole is correspondingly set as the earthing switch isolation position, and the right part of the earthing operating hole is correspondingly set as the earthing switch earthing position; the left part of the disconnector operating hole is correspondingly set as the disconnector isolation position, and the right part of the disconnector operating hole is correspondingly set as the disconnector working position; when the earthing relief hole rotates to correspond to the earthing switch earthing position, the disconnector relief hole rotates to the left of the position corresponding to the disconnector isolation position; when the earthing relief hole rotates to correspond to the earthing switch isolation position, the disconnector relief hole rotates to the position corresponding to the disconnector isolation position; when the earthing relief hole rotates to the left of the position corresponding to the earthing switch isolation position, the disconnector relief hole rotates to the position corresponding to the disconnector working position; the lower end of the first interlock rod extends above the disconnector working position, and if the disconnector relief hole rotates to the position corresponding to the disconnector working position and the circuit breaker is closed, the lower end of the first interlock rod inserts into the disconnector relief hole; the rear end of the disconnector operating shaft is provided with a circuit breaker locking trigger block, the circuit breaker locking trigger block is a circular block with a notch, and a second interlock plate is fixed below the extended interlock plate of the circuit breaker mechanism, and the lower end of the second interlock plate presses against the notch of the circuit breaker locking trigger block; the cabinet door interlock device includes an intermediate fixing plate installed on the earthing switch operating shaft, a cabinet door interlock pressing plate connected to the intermediate fixing plate, and a cabinet door interlock trigger arc block connected to the cabinet door interlock pressing plate. There is a cable chamber cabinet in the cable chamber, a cabinet door locking hole is arranged at the top of the cable chamber cabinet, a cabinet door locking rod fixed on the cabinet body is arranged above the cabinet door locking hole, and a cabinet door interlock roller located below the cabinet door interlock trigger arc block is arranged at the top of the cabinet door locking rod.

2. The 10kV environmentally friendly gas-insulated ring main unit according to claim 1, wherein, The circuit breaker switch includes a circuit breaker hexagonal drive main shaft connected to the circuit breaker mechanism, a drive crank arm arranged on the circuit breaker hexagonal drive main shaft, an upper connecting copper bar, a flexible connection, a vacuum interrupter, and a copper bar fixing plate. The drive crank arm is connected to the upper connecting copper bar through the flexible connection. The upper connecting copper bar is connected to the upper end of the vacuum interrupter. The copper bar fixing plate is connected to the lower end of the vacuum interrupter.

3. The 10kV environmentally friendly gas-insulated ring main unit according to claim 2, characterized in that, A vacuum tube creepage distance increasing umbrella skirt is arranged outside the vacuum interrupter.

4. A 10 kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that, The disconnecting switch includes a disconnecting switch hexagonal drive main shaft connected to the disconnecting mechanism, a disconnecting switch static knife holder arranged on the disconnecting switch hexagonal drive main shaft, a drive link plate, and a disconnecting switch moving knife head. The disconnecting switch static knife holder is connected to the disconnecting switch moving knife head through the drive link plate.

5. A 10kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that, A pressure relief valve is arranged between the pressure relief chamber and the cable chamber.

6. The 10kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that, A hole position baffle is further arranged between the front support plate and the interlock fixing plate. The hole position baffle extends a push rod towards the front support plate. A horizontal long hole for the left - right movement of the push rod is arranged on the front support plate. When the push rod is pushed to the left side of the horizontal long hole, the hole position baffle blocks the grounding operation hole and exposes the isolating operation hole. When the push rod is pushed to the right side of the horizontal long hole, the hole position baffle blocks the isolating operation hole and exposes the grounding operation hole.

7. A 10kV environmentally friendly gas-insulated ring main unit according to claim 6, characterized in that, Upper and lower positioning blocks are respectively arranged on the upper and lower sides of the hole position baffle. The upper parts of the front support plate, the upper positioning block, and the interlock fixing plate are fixed together by screws. The lower parts of the front support plate, the lower positioning block, and the interlock fixing plate are fixed together by screws. The upper positioning block, the lower positioning block, the front support plate, and the interlock fixing plate enclose a chamber for placing the hole position baffle.

8. A 10kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that The disconnecting mechanism further includes an isolating micro - switch and a grounding micro - switch for controlling the status indicator lights, a micro - switch trigger plate for triggering the isolating micro - switch and the grounding micro - switch, and an auxiliary switch crank arm for driving the rotation of the micro - switch trigger plate. The isolating micro - switch and the grounding micro - switch are fixed on the rear support plate through a micro - switch mounting plate. Micro - switch trigger blocks are arranged on the left and right sides of the micro - switch trigger plate. The middle part of the micro - switch trigger plate is hinged on the micro - switch mounting plate. One end of the auxiliary switch crank arm is connected to the micro - switch trigger plate, and the other end is connected to the rear end of the earthing switch operating shaft.

9. The 10kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that, It further includes a first interlock reset mechanism. The first interlock reset mechanism includes a first reset support rod and a first reset spring. A first long hole is arranged on the first interlock rod. One end of the first reset support rod is fixed on the cabinet body, and the other end passes through the first long hole and is connected to the first interlock rod through the first reset spring.

10. A 10kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that, It further includes a cabinet door locking and reset mechanism, and the cabinet door locking and reset mechanism includes a second reset support rod and a second reset spring fixed on the cabinet body. A second long hole is provided on the cabinet door locking rod, and a reset pin passing through the second long hole is provided on the second reset support rod. The reset pin is connected to the cabinet door locking rod through the second reset spring.

Images