A 110 kV transformer experimental station

Abstract

The present invention relates to a 110 kV transformer test station, comprising a test station body, a test bench for testing the transformer, a conveying mechanism arranged in the inner cavity of the test station body for conveying the transformer, a connecting mechanism for connecting the transformer, and a protective mechanism for switching the connecting mechanism on and off, and the present invention relates to the technical field of transformer equipment experiments. The 110 kV transformer test station, when the transformer fails, will cause a short circuit under the action of a strong voltage, and the test bench will short-circuit and lose power to the electromagnet, and the electromagnet will lose adsorption of the iron block, and the iron block will drop under the action of gravity, pulling the pull rope to move toward the left, pulling the on-off head upward to rise and detach from the circuit breaker slot in the circuit connection station, quickly cutting off the power of the transformer, effectively playing a protective role, and effectively preventing accidents caused by the inability to quickly disconnect the circuit when a short circuit occurs.

Description

Technical Field

[0001] The invention relates to the technical field of transformer equipment experiments, in particular to a 110 kV transformer experiment station. Background Art

[0002] The main transformer of the substation is the main step-down transformer mainly used for power transmission and transformation in the substation. It is also the core part of the substation. The capacity of the main transformer is generally large, and high reliability is required. Although the failure rate of the main transformer is not high, once a failure occurs, it will cause significant losses. At the very least, it may cause equipment failure; at worst, it may cause a fire and endanger normal transportation safety. Therefore, it is of great significance to analyze the cause of the transformer failure and take corresponding preventive measures.

[0003] In order to ensure the safety of the main transformer, it is necessary to conduct experiments and tests on it during its production process to ensure the safety of the equipment. However, when the existing testing equipment is testing the transformer, it is unable to quickly cut off the power to the transformer when a fault occurs. Under strong current, it may not be able to disconnect normally, which may easily lead to safety accidents. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a 110 kV transformer test station to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a 110 kV transformer test station, including a test station body, a test bench for testing the transformer, a conveying mechanism arranged in the inner cavity of the test station body for conveying the transformer, a connecting mechanism for connecting the transformer and a protection mechanism for switching the connecting mechanism on and off, the conveying mechanism includes a feeding table slidably arranged in the inner cavity of the test station body for loading the transformer, a circuit connection table fixed on both sides of the feeding table for electrically connecting the transformer through connectors of various specifications, the circuit connection table is electrically connected to the test bench, a circuit breaker groove is provided in the inner cavity of the circuit breaker groove, a connecting head is provided in the inner cavity of the circuit breaker groove, the circuits on both sides of the circuit connection table are connected, the transformer is powered on and tested, and the transformer is powered off when the connecting head is taken out;

[0006] The protection mechanism includes a partition fixed in the inner cavity of the experimental station body, the inner cavity of the partition is slidably connected with a pull rope through a through groove, both sides of the partition are rotatably connected with guide wheels for guiding the pull rope, the right side of the partition is fixedly connected with a sliding sleeve, the inner cavity of the sliding sleeve is slidably connected with a lifting rod, the bottom end of the lifting rod is fixedly connected to the top of the on-off head, the top of the lifting rod is fixedly connected to the bottom end of the pull rope, the left side of the partition is fixedly connected with a lifting cylinder, the top of the lifting cylinder piston rod is fixedly connected with an electromagnet, the left end of the pull rope is fixedly connected with an iron block adsorbed by the electromagnet through suction, the electromagnet is electrically connected to the detection table, when in use, the transformer is placed above the feeding table, and then transported to the test position inside the experimental station body, at this time the on-off head is located directly above the circuit breaker slot, and then it is connected to the transformer through the joint on the side of the feeding table, and after the connection is completed, the The equipment is tested. At this time, personnel evacuate and the lifting cylinder is controlled to drive the electromagnet to rise, driving the iron block to move upward. At this time, the pull rope moves to the right under the pulling force of the on-off head. At this time, the lifting rod slides in the sliding sleeve, driving the on-off head to descend and plug into the circuit breaker slot, connecting the circuit connection table and the transformer. At this time, power is supplied through the detection table for detection, and data is judged by the detection table. When the transformer fails, a short circuit will occur under the action of a strong voltage. The electromagnet can also be manually powered off. At this time, the detection table is short-circuited and powered off, and the power supply to the electromagnet is lost. At this time, the electromagnet loses its adsorption to the iron block, and the iron block descends under the action of gravity, pulling the pull rope to move to the left, pulling the on-off head upward and disengaging it from the circuit breaker slot in the circuit connection table, quickly cutting off the power to the transformer, effectively playing a protective role, and effectively preventing accidents caused by the inability to quickly disconnect the circuit when a short circuit occurs.

[0007] As a further solution of the present invention: an axial gap exists when the lifting rod slides up and down in the inner cavity of the sliding sleeve.

[0008] As a further solution of the present invention: a truncated cone groove which is larger at the top and smaller at the bottom is provided on the top of the circuit breaker groove, and an inclined surface which matches the truncated cone groove is provided on the top of the switch head and is cylindrical at the bottom. The switch head can be quickly inserted into the circuit breaker groove when it is lowered, so that the detection circuit of the transformer can be connected and can be quickly aligned. Through the setting of the axial gap, the lifting rod can swing in all directions and can be automatically positioned under the action of gravity. Even if there is a deviation in the positioning, it can be automatically corrected.

[0009] As a further solution of the present invention: a counterweight block is arranged above the on-off head. Through the arrangement of the counterweight block, when the pull rope loses the pulling force on the on-off head, the on-off head can be plugged into the bottom of the circuit breaker slot by its own weight to electrically connect the circuit connection platform.

[0010] As a further solution of the present invention: the left side of the partition is fixedly connected with a limit platform located below the iron block. The limit platform can prevent the iron block from falling excessively and causing impact, while ensuring that the iron block will not fall too long a distance while driving the switch head to rise to cut off power.

[0011] As a further solution of the present invention: the weight of the iron block is 10 times that of the on-off head, and the speed of pulling the on-off head to rise can be adjusted by the weight ratio, so that the power can be cut off quickly.

[0012] As a further solution of the present invention: it also includes a fire extinguishing mechanism arranged on the experimental station body, the fire extinguishing mechanism includes a protection box fixed above the experimental station body, the inner cavity of the protection box is rotatably connected to a storage barrel driven by a driving unit, the inner cavity of the storage barrel stores fire extinguishing powder, and the top of the storage barrel is provided with a discharge port. When the transformer is in use, the storage barrel is driven to rotate by the driving unit to rotate the discharge port downward, and the fire extinguishing powder inside it covers the surface of the transformer body to cover the surface and extinguish the fire.

[0013] As a further solution of the present invention: the driving unit includes a toothed belt that is driven by an active gear to rotate on the surface of the protection box, and the sides of the storage barrel are fixedly connected with a transmission wheel that meshes with the toothed belt. The toothed belt is driven to rotate by the active gear, which can quickly drive the transmission wheel to rotate, and drive the storage barrel to rotate to spray the fire extinguishing powder to the bottom.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] According to the present invention, when a transformer fails, a short circuit may be caused by a strong voltage, and the electromagnet may be powered off manually. At this time, the detection platform is short-circuited and powered off, and the power supply to the electromagnet is lost. At this time, the electromagnet loses its adsorption to the iron block. Under the action of gravity, the iron block drops and pulls the pull rope to move toward the left side, and the disconnecting head is pulled up and detached from the disconnecting groove in the circuit connection platform, so that the transformer is quickly powered off, which effectively plays a protective role and can effectively prevent accidents caused by the inability to quickly disconnect the circuit when a short circuit occurs.

[0016] According to the present invention, the on-off head can be quickly inserted into the circuit breaker slot when it descends, so as to connect the detection circuit of the transformer and quickly align it. By setting the axial gap, the lifting rod can swing in all directions and can be automatically positioned under the action of gravity. Even if there is a deviation in the positioning, it can be automatically corrected.

[0017] When the transformer is in use, the present invention drives the storage barrel to rotate through the driving unit, rotates the discharge port downward, and covers the surface of the transformer body with the fire extinguishing powder inside to extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural cross-sectional view of the present invention;

[0020] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 It is a structural schematic diagram of the storage barrel of the present invention in a flipping state.

[0022] In the figure: 1. Experimental station body; 2. Testing table; 3. Feeding table; 4. Transformer; 5. Circuit connection table; 6. Circuit breaker slot; 7. Guide wheel; 8. Pull rope; 9. Lifting rod; 10. Sliding sleeve; 11. On / off head; 12. Iron block; 13. Electromagnet; 14. Lifting cylinder; 15. Limiting table; 16. Protection box; 17. Storage barrel; 18. Discharge outlet; 19. Fire extinguishing powder; 20. Transmission wheel; 21. Toothed belt; 22. Driving gear; 23. Partition; 24. Through slot. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-4 The present invention provides a technical solution: a 110 kV transformer test station, comprising a test station body 1, a test bench 2 for testing a transformer 4, a conveying mechanism arranged in the inner cavity of the test station body 1 for conveying the transformer 4, a connecting mechanism for connecting the transformer 4 and a protection mechanism for switching the connecting mechanism on and off, the conveying mechanism comprising a feeding table 3 slidably arranged in the inner cavity of the test station body 1 for loading the transformer 4, a circuit connection table 5 fixed on both sides of the feeding table 3 and electrically connected to the transformer 4 through connectors of various specifications, the circuit connection table 5 is electrically connected to the test bench 2, a circuit breaker groove 6 is provided in the inner cavity of the circuit breaker groove 6, a switch head 11 is provided in the inner cavity of the circuit breaker groove 6, the circuit breaker groove 6 is filled by the switch head 11, the circuits on both sides of the circuit connection table 5 are connected, the transformer 4 is powered for testing, and the transformer 4 is powered off when the switch head 11 is taken out;

[0025] The protection mechanism includes a partition 23 fixed to the inner cavity of the experimental station body 1, the inner cavity of the partition 23 is slidably connected to a pull rope 8 through a through groove 24, both sides of the partition 23 are rotatably connected to guide wheels 7 for guiding the pull rope 8, the right side of the partition 23 is fixedly connected to a sliding sleeve 10, the inner cavity of the sliding sleeve 10 is slidably connected to a lifting rod 9, the bottom end of the lifting rod 9 is fixedly connected to the top of the on-off head 11, the top of the lifting rod 9 is fixedly connected to the bottom end of the pull rope 8, and the left side of the partition 23 is fixedly connected to The lifting cylinder 14, the top of the piston rod of the lifting cylinder 14 is fixedly connected with an electromagnet 13, the left end of the pull rope 8 is fixedly connected with an iron block 12 adsorbed by the electromagnet 13 through suction, and the electromagnet 13 is electrically connected to the test table 2. When in use, the transformer 4 is placed above the feeding table 3, and then transported to the test position inside the experimental station body 1. At this time, the on-off head 11 is located just above the circuit breaker slot 6, and then it is connected to the transformer 4 through the connector on the side of the feeding table 3. After the connection is completed, it is ready to be tested. The personnel evacuate at this time, and the electromagnet 13 is lifted up by controlling the lifting cylinder 14, and the iron block 12 is driven to move upward. At this time, the pull rope 8 is moved to the right by the pulling force of the on-off head 11. At this time, the lifting rod 9 slides in the sliding sleeve 10, driving the on-off head 11 to descend and plug into the circuit breaker slot 6, so that the circuit connection platform 5 and the transformer 4 are connected. At this time, the detection platform 2 is powered for detection, and the data is judged by the detection platform 2. When the transformer 4 fails, a short circuit will occur under the action of a strong voltage. The electromagnet 13 can also be manually powered off. At this time, the detection platform 2 is short-circuited and powered off, and the power supply to the electromagnet 13 is lost. At this time, the electromagnet 13 loses the adsorption of the iron block 12. Under the action of gravity, the iron block 12 descends and pulls the pull rope 8 to move toward the left side, pulling the on-off head 11 upward to rise and detach from the circuit breaker slot 6 in the circuit connection platform 5, and quickly powers off the transformer 4, which effectively plays a protective role, and can effectively prevent the circuit from being quickly disconnected when a short circuit occurs, resulting in an accident.

[0026] There is an axial gap when the lifting rod 9 slides up and down in the inner cavity of the sliding sleeve 10.

[0027] A truncated cone groove which is larger at the top and smaller at the bottom is provided at the top of the circuit breaker groove 6. An inclined surface which matches the truncated cone groove is provided at the top of the on-off head 11 and the bottom is cylindrical. The on-off head 11 can be quickly inserted into the circuit breaker groove 6 when it descends, so that the detection circuit of the transformer 4 is connected and can be quickly aligned. By setting the axial gap, the lifting rod 9 can swing in all directions and can be automatically positioned under the action of gravity. Even if there is a deviation in the positioning, it can be automatically corrected.

[0028] A counterweight is provided above the on-off head 11. By providing the counterweight, when the pull rope 8 loses the pulling force on the on-off head 11, the on-off head 11 can be plugged into the bottom of the circuit breaker slot 6 by its own weight to electrically connect the circuit connection platform 5.

[0029] The left side of the partition 23 is fixedly connected with a limit platform 15 located below the iron block 12. The limit platform 15 can prevent the iron block 12 from falling too much and causing impact, while ensuring that the iron block 12 falls and drives the switch head 11 to rise to cut off the power without falling too long a distance.

[0030] The weight of the iron block 12 is 10 times that of the on-off head 11. The speed of pulling the on-off head 11 up can be adjusted by the weight ratio, so that the power can be cut off quickly.

[0031] It also includes a fire extinguishing mechanism arranged on the experimental station body 1, and the fire extinguishing mechanism includes a protection box 16 fixed above the experimental station body 1, the inner cavity of the protection box 16 is rotatably connected to a storage barrel 17 driven by a driving unit, the inner cavity of the storage barrel 17 stores fire extinguishing powder 19, and the top of the storage barrel 17 is provided with a discharge port 18. When the transformer 4 is in use, the storage barrel 17 is driven by the driving unit to rotate, and the discharge port 18 is rotated downward, so that the fire extinguishing powder 19 inside it covers the surface of the transformer 4 to cover the surface and extinguish the fire.

[0032] The driving unit includes a toothed belt 21 that is driven to rotate on the surface of the protection box 16 by a driving gear 22. The sides of the storage barrel 17 are fixedly connected with a transmission wheel 20 that meshes with the toothed belt 21. The toothed belt 21 is driven to rotate by the driving gear 22, which can quickly drive the transmission wheel 20 to rotate, and drive the storage barrel 17 to rotate to spray the fire extinguishing powder 19 to the bottom.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A 110 kV transformer test station, comprising a test station body (1), a test bench (2) for testing a transformer (4), a conveying mechanism arranged in the inner cavity of the test station body (1) for conveying the transformer (4), a connecting mechanism for connecting the transformer (4), and a protection mechanism for switching the connecting mechanism, characterized in that: The conveying mechanism comprises a feeding table (3) slidably arranged in the inner cavity of the experimental station body (1) for loading the transformer (4), a circuit connection table (5) fixed on both sides of the feeding table (3) and electrically connected to the transformer (4), the circuit connection table (5) being electrically connected to the detection table (2), a circuit breaker groove (6) being provided in the inner cavity of the circuit breaker groove (6), and a connecting and disconnecting head (11) being provided in the inner cavity of the circuit breaker groove (6); The protection mechanism comprises a partition (23) fixed to the inner cavity of the experimental station body (1), the inner cavity of the partition (23) being slidably connected to a pull rope (8) through a through groove (24), both sides of the partition (23) being rotatably connected to guide wheels (7) for guiding the pull rope (8), the right side of the partition (23) being fixedly connected to a sliding sleeve (10), the inner cavity of the sliding sleeve (10) being slidably connected to a lifting rod (9), the bottom end of the lifting rod (9) being fixedly connected to the top of a switch head (11), the top end of the lifting rod (9) being fixedly connected to the bottom end of the pull rope (8), the left side of the partition (23) being fixedly connected to a lifting cylinder (14), the top end of a piston rod of the lifting cylinder (14) being fixedly connected to an electromagnet (13), the left end of the pull rope (8) being fixedly connected to an iron block (12) adsorbed by the electromagnet (13) through suction, and the electromagnet (13) being electrically connected to the test bench (2).

2. A 110 kV transformer test station according to claim 1, characterized in that: When the lifting rod (9) slides up and down in the inner cavity of the sliding sleeve (10), an axial gap exists.

3. A 110 kV transformer test station according to claim 1, characterized in that: The top of the circuit breaker groove (6) is provided with a truncated cone groove that is larger at the top and smaller at the bottom. The top of the on-off head (11) is provided with an inclined surface that matches the truncated cone groove and the bottom is cylindrical.

4. A 110 kV transformer test station according to claim 1, characterized in that: A counterweight block is arranged above the on / off head (11).

5. A 110 kV transformer test station according to claim 1, characterized in that: The left side of the partition plate (23) is fixedly connected to a limiting platform (15) located below the iron block (12).

6. A 110 kV transformer test station according to claim 1, characterized in that: The weight of the iron block (12) is 10 times that of the on-off head (11).

7. The 110 kV transformer test station according to claim 1, characterized in that: The invention also comprises a fire extinguishing mechanism arranged on the experimental station body (1), the fire extinguishing mechanism comprising a protection box (16) fixed above the experimental station body (1), the inner cavity of the protection box (16) being rotatably connected to a storage barrel (17) driven by a driving unit, the inner cavity of the storage barrel (17) storing fire extinguishing powder (19), and a discharge outlet (18) being provided at the top of the storage barrel (17).

8. A 110 kV transformer test station according to claim 7, characterized in that: The driving unit comprises a toothed belt (21) rotatably arranged on the surface of the protection box (16) and driven by a driving gear (22), and the sides of the storage barrel (17) are fixedly connected with a transmission wheel (20) meshing with the toothed belt (21).

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