An outdoor box-type substation

Abstract

The present invention belongs to the technical field of transformer substations, and specifically provides an outdoor box-type transformer substation, including a box body, a main transformer room and a sub-transformer room are arranged inside the box body, a main transformer room is provided with a main transformer unit, the main transformer unit includes a main high-voltage transformer unit and a main low-voltage transformer unit, the main high-voltage transformer unit and the main low-voltage transformer unit are provided with circuit breakers, load-side isolating switches, and power-side isolating switches in order from top to bottom, and interlocking devices are arranged outside the circuit breakers, load-side isolating switches, and power-side isolating switches, and a sub-transformer unit is provided in the sub-transformer room, the sub-transformer unit includes a sub-high-voltage transformer unit and a sub-low-voltage transformer unit, and the sub-high-voltage transformer unit and the sub-low-voltage transformer unit are arranged in the same manner as the main high-voltage transformer unit and the main low-voltage transformer unit. Through the above arrangement, it can be ensured that when the main transformer unit is started and stopped, each switch can be opened or closed in a reasonable order by force, and when the main transformer unit is overhauled, the auxiliary transformer unit is used for temporary voltage transformation.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substations, and in particular to an outdoor box-type transformer substation. Background Art

[0002] Outdoor box-type substation, also known as prefabricated substation or prefabricated substation, is a factory-prefabricated indoor and outdoor compact distribution equipment that integrates high-voltage switchgear, distribution transformers and low-voltage distribution devices according to a certain wiring scheme. This equipment has the advantages of small footprint, quick installation, low operating cost, no pollution, and maintenance-free. It is widely used in various outdoor places such as urban power grid transformation, temporary power supply, industrial parks and remote areas.

[0003] During the use of the substation, it is necessary to carry out preventive maintenance and overhaul of the substation equipment, including routine maintenance work such as cleaning, lubrication, and tightening, as well as necessary replacement and repair work to ensure the normal operation of the equipment. When performing the above operations, the substation must be powered off and shut down. When shutting down, it is necessary to turn off the circuit breaker, load-side isolating switch, and power-side isolating switch in a certain order. When the power supply is restored, it is necessary to turn on the power-side isolating switch, load-side isolating switch, and turn off the circuit breaker in turn. If the switches are not turned off or on in this order, the substation will be damaged and faulty. During this process, the substation and connected equipment cannot be used. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention provides an outdoor box-type substation, which can ensure that when the main substation is started and stopped, each switch can be forcibly opened or closed in a reasonable order, and when the main substation is repaired, the normal use of related equipment can be ensured.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an outdoor box-type substation, comprising a box body, wherein a main transformer room and an auxiliary transformer room are arranged inside the box body, a main transformer room is provided with a main transformer unit, the main transformer unit includes a main high-voltage transformer unit and a main low-voltage transformer unit, the main high-voltage transformer unit and the main low-voltage transformer unit are provided with circuit breakers, load-side isolating switches and power-side isolating switches from top to bottom, and interlocking devices are arranged outside the circuit breakers, load-side isolating switches and power-side isolating switches, an auxiliary transformer unit is arranged in the auxiliary transformer room, the auxiliary transformer unit includes an auxiliary high-voltage transformer unit and an auxiliary low-voltage transformer unit, and the auxiliary high-voltage transformer unit and the auxiliary low-voltage transformer unit are arranged in the same manner as the main high-voltage transformer unit and the main low-voltage transformer unit.

[0006] As a further improvement of the present invention, the interlocking device includes a first shell, which is sleeved on the operating rod of the circuit breaker, and the first shell can be slidably connected to the slide rail, and the slide rail is fixedly connected to the shell of the main high-voltage transformer set, and the first shell is fixedly connected to the first connecting rod on both sides, and the first connecting rod is fixedly connected to the first locking block on the side away from the first shell, and the operating rod of the load side disconnector is sleeved with a second shell, and the second shell can be slidably connected to the slide rail, and the second connecting rod is fixedly connected to the second connecting rod on both sides of the second shell, and the second connecting rod is fixedly connected to the second locking block on the side away from the second shell, and the upper part of the second locking block cooperates with the first locking block, and the operating rod of the power side disconnector is sleeved with a third shell, and the third shell can be slidably connected to the slide rail, and the third connecting rod is fixedly connected to the third connecting rod on both sides of the third shell, and the third connecting rod is fixedly connected to the third locking block on the side away from the third shell, and the third locking block cooperates with the lower part of the second locking block.

[0007] As a further improvement of the present invention, the shape of the first locking block is L-shaped, the shape of the second locking block is E-shaped, and the shape of the third locking block is inverted L-shaped.

[0008] As a further improvement of the present invention, the bending part of the first locking block matches with the bending part of the upper part of the second locking block, and the bending part of the third locking block matches with the bending part of the lower part of the second locking block.

[0009] As a further improvement of the present invention, a heat dissipation chamber is also provided in the box body, and the heat dissipation chamber is connected with the main transformer chamber and the auxiliary transformer chamber through heat dissipation holes. A heat dissipation device is provided in the heat dissipation chamber, and the heat dissipation chamber is connected to the outside of the box body through the air outlet holes on the box body.

[0010] As a further improvement of the present invention, the heat dissipation chamber is hinged with a main box door through one side of the main transformer chamber on the box body, and the main box door is provided with a first door lock.

[0011] As a further improvement of the present invention, a secondary box door is hinged on one side of the secondary transformer chamber, and a second door lock is provided on the secondary box door.

[0012] As a further improvement of the present invention, ventilation plates are provided at the bottom of the main box door and the auxiliary box door.

[0013] As a further improvement of the present invention, a conical box top is fixedly connected to the top of the box body.

[0014] As a further improvement of the present invention, a base is fixedly connected to the bottom of the box, and a plurality of hanging rings are fixedly connected to the side of the base.

[0015] Beneficial effects of the present invention:

[0016] 1. Set up the main transformer room and auxiliary transformer room in the box, then set up the main transformer unit in the main transformer room and the auxiliary transformer unit in the auxiliary transformer room. When it is necessary to overhaul the main transformer unit in the main transformer room, start the auxiliary transformer unit in the auxiliary transformer room to provide temporary high and low voltage power supply to ensure the normal use of the equipment.

[0017] 2. By setting interlocking devices on the switches of the high-voltage substation and low-voltage substation of the main and auxiliary substations, it can be ensured that when the high-voltage substation and low-voltage substation are closed or opened, they can be forced to be closed or started in a specific order between the circuit breaker, the load-side isolating switch, and the power-side isolating switch, so as to prevent damage to the substation due to incorrect closing order. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric diagram of an outdoor box-type substation of the present invention;

[0019] Figure 2 This is the internal schematic diagram of an outdoor box-type substation;

[0020] Figure 3 This is a schematic diagram of the internal structure of the main transformer room of a box-type substation;

[0021] Figure 4 This is a schematic diagram of the switch structure start-up of the main high-voltage transformer unit;

[0022] Figure 5 It is a schematic diagram of the switch structure of the main high-voltage transformer unit being closed.

[0023] In the figure: 1-box, 2-box top, 3-base, 4-lifting ring, 5-main box door, 50-ventilation plate, 51-first door lock, 6-main transformer room, 7-auxiliary transformer room, 70-auxiliary box door, 71-second door lock, 8-heat dissipation room, 9-heat dissipation hole, 10-air outlet;

[0024] 11-main high-voltage transformer unit, 110-main transformer high-voltage circuit breaker, 111-main transformer high-voltage load side disconnector, 112-main transformer high-voltage power supply side disconnector, 113-first housing, 114-switch slot, 115-first operating rod, 116-slide rail, 117-first connecting rod, 118-first locking block, 119-second housing, 120-second operating rod, 121-second connecting rod, 122-second locking block, 123-third housing, 124-third operating rod, 125-third connecting rod, 126-third locking block;

[0025] 12-Main low voltage transformer unit. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not intended to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate and are not used to limit the present invention. In addition, in all embodiments, the same figure numerals represent the same elements.

[0027] See also Figures 1 to 5 The present invention provides an outdoor box-type substation, comprising a base 3, a box body 1, and a box top 2. The bottom of the box body 1 is fixedly connected with a rectangular plate-shaped base 3, and both sides of the two long sides of the base 3 are fixedly connected with hanging rings 4. The top of the box body 1 is fixedly connected with the box top 2. The box top 2 is conical and used for outdoor waterproofing.

[0028] As a further explanation of this embodiment, when the box-type substation needs to be moved, the lifting rings 4 at both ends of the base 3 are convenient for moving by mechanical lifting.

[0029] The interior of the box body 1 is divided into a main transformer chamber 6, an auxiliary transformer chamber 7 and a heat dissipation chamber 8 by a partition. A plurality of heat dissipation holes 9 are provided on the partition between the main transformer chamber 6 and the heat dissipation chamber 8. A plurality of heat dissipation holes 9 are also provided on the partition between the auxiliary transformer chamber 7 and the heat dissipation chamber 8 on the side close to the main transformer chamber. A plurality of air outlet holes 10 are provided on the box body 1 on the side of the heat dissipation chamber 8 away from the heat dissipation holes 9. A heat dissipation device is installed in the heat dissipation chamber 8, and the air suction end of the heat dissipation device is close to the side of the heat dissipation holes 9, and the air outlet end of the heat dissipation device is close to the side of the air outlet holes 10 on the box body 1.

[0030] As a further explanation of this embodiment, through the heat dissipation device, the heat generated by the equipment in the main transformer room 6 or the auxiliary transformer room 7 can be sucked into the heat dissipation chamber 8 from the heat dissipation hole 9, and then enter the air suction end of the heat dissipation device, and finally discharged from the air outlet end of the heat dissipation device through the air outlet 10 on the box body 1 to the outside of the substation.

[0031] A main door 5 is provided on one side of the main transformer room 6. The main door 5 is composed of two hinged door bodies that fit together in the middle. A first door lock 51 is provided on the main door 5. The lower parts of the two door bodies of the main door 5 are provided with waterproof ventilation plates 50, which can ventilate the main transformer room 6 while assisting in dissipating the heat inside the main transformer room 6.

[0032] The main transformer room 6 is equipped with a main transformer unit, which includes a main high-voltage transformer unit 11 and a main low-voltage transformer unit 12. The main high-voltage transformer unit 11 is provided with a main transformer high-voltage circuit breaker 110, a main transformer high-voltage load side isolating switch 111, and a main transformer high-voltage power supply side isolating switch 112 on the side close to the main box door 5. The main transformer high-voltage circuit breaker 110, the main transformer high-voltage load side isolating switch 111, and the main transformer high-voltage power supply side isolating switch 112 are arranged in sequence from top to bottom. The main low-voltage transformer unit 12 is provided with a main transformer low-voltage circuit breaker, a main transformer low-voltage load side isolating switch, and a main transformer low-voltage power supply side isolating switch on the side close to the main box door 5. The main transformer low-voltage circuit breaker, the main transformer low-voltage load side isolating switch, and the main transformer low-voltage power supply side isolating switch are arranged in sequence from top to bottom.

[0033] An interlocking device is provided between the main transformer high-voltage circuit breaker 110, the main transformer high-voltage load-side disconnector 111, and the main transformer high-voltage power supply-side disconnector 112. The interlocking device includes a first housing 113, a switch slot 114 is provided in the middle of the first housing 113, the first housing 113 is sleeved on the first operating rod 115 of the main transformer high-voltage circuit breaker 110 through the switch slot 114, and the first housing 113 is provided with slide grooves at both ends of the side close to the main high-voltage transformer unit 11, and the first housing 113 is matched with the slide rail 116 through the slide grooves at both ends, and the slide rail 116 is fixedly connected to the housing of the main high-voltage transformer unit 11. The first connecting rod 117 is fixedly connected to both sides of the first housing 113, and the first locking block 118 is fixedly connected to the end of the first connecting rod 117 away from the first housing 113, and the first locking block 118 is fixedly installed in an L shape.

[0034] The interlocking device also includes a second housing 119, a switch slot 114 is opened in the middle of the second housing 119, and the second housing 119 is sleeved on the second operating rod 120 of the main transformer high-voltage load side disconnector 111 through the switch slot 114. The second housing 119 is provided with slide grooves at both ends of the side close to the main high-voltage transformer unit 11, and the second housing 119 is matched on the slide rail 116 through the slide grooves at both ends. The second housing 119 is fixedly connected to the second connecting rod 121 on both sides, and the second connecting rod 121 is fixedly connected to the end away from the second housing 119. The second locking block 122 is E-shaped. The bending part of the upper part of the second locking block 122 matches the bending part of the first locking block 118.

[0035] The interlocking device also includes a third housing 123, a switch slot 114 is opened in the middle of the third housing 123, and the third housing 123 is sleeved on the third operating rod 124 of the main transformer high-voltage power supply side disconnector 112 through the switch slot 114. The third housing 123 is provided with slide grooves at both ends of the side close to the main high-voltage transformer unit 11, and the third housing 123 is matched on the slide rail 116 through the slide grooves at both ends. The third housing 123 is fixedly connected to the third connecting rod 125 on both sides, and the third connecting rod 125 is fixedly connected to the end away from the third housing 123. The third locking block 126 is fixedly installed in an inverted L shape. The bending part of the third locking block 126 matches the bending part of the bottom of the second locking block 122.

[0036] As a further explanation of this embodiment, when it is necessary to shut down the main high-voltage transformer unit 11, it is necessary to shut down the main transformer high-voltage circuit breaker 110, the main transformer high-voltage load side disconnector 111, and the main transformer high-voltage power supply side disconnector 112 in sequence from top to bottom, and the main transformer high-voltage circuit breaker 110 is closed downward, and the first housing 113 moves downward along the slide rail 116. The first housing 113 drives the first locking block 118 to move downward through the first connecting rod 117, and the first locking block 118 is separated from the second locking block 122; then the main transformer high-voltage load side disconnector 111 is closed, and the second housing 119 moves downward along the guide rail, and the second housing 119 passes The second locking block 122 is driven downward by the second connecting rod 121, the upper part of the second locking block 122 is re-matched with the first locking block 118, and the lower part of the second locking block 122 is separated from the third locking block 126; then the main transformer high-voltage power supply side disconnector 112 is closed, the third shell 123 moves downward along the guide rail, and the third shell 123 drives the third locking block 126 to move downward through the third connecting rod 125, and the third locking block 126 is re-matched with the lower part of the second locking block 122, and the main transformer high-voltage circuit breaker 110, the main transformer high-voltage load side disconnector 111, and the main transformer high-voltage power supply side disconnector 112 are restored to the locked state.

[0037] If the main transformer high-voltage circuit breaker 110 is not closed and the main transformer high-voltage load side disconnector 111 is directly closed, the upper part of the second locking block 122 will be engaged by the first locking block 118, resulting in locking and being unable to move; similarly, if the main transformer high-voltage power supply side disconnector 112 is directly closed, the third locking block 126 will be engaged by the lower part of the second locking block 122, resulting in locking and being unable to move. Even if the main transformer high-voltage circuit breaker 110 is closed, the main transformer high-voltage power supply side disconnector 112 still needs to close the main transformer high-voltage load side disconnector 111 before it can be moved.

[0038] On the contrary, if you want to restore the operation of the main high-voltage transformer unit 11, you need to push the main transformer high-voltage power supply side isolating switch 112, the main transformer high-voltage load side isolating switch 111, and the main transformer high-voltage circuit breaker 110 upward from bottom to top, so as to open the main high-voltage transformer.

[0039] Similarly, the main transformer low-voltage circuit breaker, the main transformer low-voltage load side disconnector, and the main transformer low-voltage power supply side disconnector on the main low-voltage transformer unit 12 are provided with the same interlocking device as the main high-voltage transformer unit 11 to ensure that they can be closed and opened in the specified order when opened or closed.

[0040] A secondary door 70 is hinged on one side of the secondary transformer room 7. The secondary door 70 is a single-sided door body. A second door lock 71 is provided on the secondary door 70. A waterproof ventilation plate 50 is provided at the lower part of the secondary door 70 to assist in dissipating the heat inside the main transformer room 6. A secondary transformer unit is installed inside the secondary transformer room 7. The secondary transformer unit includes a secondary high-voltage transformer unit and a secondary low-voltage transformer unit. The secondary high-voltage transformer unit and the secondary low-voltage transformer unit are arranged in the same manner as the main high-voltage transformer unit 11 and the main low-voltage transformer unit 12.

[0041] The working principle and use process of this embodiment:

[0042] When the main transformer needs to be maintained and repaired, the main box door 5 is opened, and then the main transformer high voltage circuit breaker 110, the main transformer high voltage load side isolating switch 111, and the main transformer high voltage power supply side isolating switch 112 of the main high voltage transformer 11 are closed in sequence, and then the main transformer low voltage circuit breaker, the main transformer low voltage load side isolating switch, and the main transformer low voltage power supply side isolating switch of the main low voltage transformer 12 are closed in sequence, and then the auxiliary box door 70 of the auxiliary transformer room 7 is opened, and the power supply side isolating switch, load side isolating switch, and circuit breaker of the auxiliary high voltage transformer and auxiliary low voltage transformer are opened in sequence. If the switch is closed incorrectly, it is impossible to open or close each switch.

[0043] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above implementation measures. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An outdoor box-type substation, characterized in that: The invention comprises a box body (1), wherein a main transformer room (6) and a secondary transformer room (7) are arranged inside the box body (1), wherein a main transformer room (6) is arranged inside the main transformer room, wherein the main transformer room comprises a main high-voltage transformer room (11) and a main low-voltage transformer room (12), wherein the main high-voltage transformer room (11) and the main low-voltage transformer room (12) are provided with a circuit breaker, a load-side isolating switch and a power-side isolating switch in order from top to bottom, and each of the circuit breaker, the load-side isolating switch and the power-side isolating switch is provided with an interlocking device outside, wherein the secondary transformer room (7) is arranged inside the secondary transformer room, wherein the secondary transformer room comprises a secondary high-voltage transformer room and a secondary low-voltage transformer room, and wherein the secondary high-voltage transformer room and the secondary low-voltage transformer room are provided in the same manner as the main high-voltage transformer room (11) and the main low-voltage transformer room (12); The interlocking device comprises a first housing (113), the first housing (113) being sleeved on an operating rod of the circuit breaker, the first housing (113) being slidably connected to a slide rail (116), the slide rail (116) being fixedly connected to a housing of a main high-voltage transformer unit (11), first connecting rods (117) being fixedly connected to both sides of the first housing (113), a first locking block (118) being fixedly connected to a side of the first connecting rod (117) away from the first housing (113), a second housing (119) being sleeved on the operating rod of the load-side disconnector, the second housing (119) being slidably connected to the slide rail (116), second connecting rods (121) being fixedly connected to both sides of the second housing (119), the second connecting rods (121) being fixedly connected to both sides of the second housing (119), A second locking block (122) is fixedly connected to a side away from the second housing (119), and an upper portion of the second locking block (122) cooperates with the first locking block (118); a third housing (123) is sleeved on the operating rod of the power-side isolating switch, and the third housing (123) is slidably connected to the slide rail (116); third connecting rods (125) are fixedly connected to both sides of the third housing (123); a third locking block (126) is fixedly connected to a side of the third connecting rod (125) away from the third housing (123), and the third locking block (126) cooperates with a lower portion of the second locking block (122); the first locking block (118) is L-shaped, the second locking block (122) is E-shaped, and the third locking block (126) is inverted L-shaped; The bend of the first locking block (118) matches with the bend of the upper portion of the second locking block (122), and the bend of the third locking block (126) matches with the bend of the lower portion of the second locking block (122).

2. The outdoor box-type substation according to claim 1, characterized in that: A heat dissipation chamber (8) is also provided in the box body (1), the heat dissipation chamber (8) is connected to the main transformer chamber (6) and the auxiliary transformer chamber (7) through heat dissipation holes (9), a heat dissipation device is provided in the heat dissipation chamber (8), and the heat dissipation chamber (8) is connected to the outside of the box body (1) through air outlet holes (10) on the box body (1).

3. The outdoor box-type substation according to claim 1, characterized in that: A main box door (5) is hingedly connected to one side of the main transformer room (6), and a first door lock (51) is provided on the main box door (5).

4. The outdoor box-type substation according to claim 3, characterized in that: A secondary box door (70) is hingedly connected to one side of the secondary transformer chamber (7), and a second door lock (71) is provided on the secondary box door (70).

5. The outdoor box-type substation according to claim 4, characterized in that: A ventilation plate (50) is provided at the bottom of the main box door (5) and the auxiliary box door (70).

6. The outdoor box-type substation according to claim 1, characterized in that: A conical box top (2) is fixedly connected to the top of the box body (1).

7. The outdoor box-type substation according to claim 1, characterized in that: The bottom of the box body (1) is fixedly connected to a base (3), and the side of the base (3) is fixedly connected to a plurality of lifting rings (4).

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