A starting isolating switch for a pumped storage power station

Abstract

The present invention discloses a starting isolating switch for a pumped-storage power station, which relates to the technical field of pumped-storage power stations, comprising: a mounting box that is fixedly connected to the side end of a static contact tube and communicated with the inner cavity of the static contact tube, a blower that is fixedly connected to the bottom of the static contact tube via an air supply pipe, a collecting plate that is fixedly connected to the inner wall of the mounting box via a connecting frame, a static contact assembly that is fixedly connected to the collecting plate at one end away from the static contact tube, a contact that abuts against the static contact assembly is fixedly connected to the side end of a moving contact seat, a moving contact cable that sequentially passes through the moving contact seat, the moving contact box and the inner cavity of the fixed tube, the airflow cleans dust attached to the surfaces of the contacts and the static contact assembly, and the dust flows out from the outlet end of the mounting box following the airflow, thereby achieving the effect of cleaning the dust on the surfaces of the contacts and the static contact assembly, and avoiding the phenomenon that dust adheres to the surface of the contacts and causes the contact resistance to increase.

Description

Technical Field

[0001] The present invention relates to the technical field of pumped storage power stations, in particular to a starting isolating switch for a pumped storage power station. Background Art

[0002] A pumped-storage power station is a special type of hydropower station that uses excess electricity in the power system during low-load periods to pump water from the lower reservoir to the upper reservoir for storage; when the power system load reaches peak, the water in the upper reservoir is released to generate electricity, thereby realizing the storage and release of electrical energy.

[0003] In the prior art, pumped-storage power stations often use generator motors to pump and release water. The generator motor needs to close the starting disconnector before it can operate. Since the starting disconnector is relatively large, it is often installed outdoors for use. The starting disconnector mainly consists of a static contact seat, a moving contact seat, a conductive rod and a driving cylinder. The driving cylinder rotates with the moving contact seat. When the contact of the moving contact seat contacts the contact seat, the starting disconnector is closed, thereby achieving the circuit closing effect of the generator motor.

[0004] However, the starting disconnector is installed outdoors for use. Since the outdoor air contains dust, when the dust adheres to the contacts of the moving contact seat, the resistance of the contacts increases. The increased resistance of the contacts not only reduces the current transmission efficiency, but also causes the contacts to overheat. Summary of the Invention

[0005] The object of the present invention is to provide a starting disconnector for a pumped storage power station, so as to solve the technical problem in the prior art that dust in the air adheres to the contacts of the moving contact seat, thereby increasing the resistance of the contacts.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] A starting disconnect switch for a pumped storage power station, comprising:

[0008] A static contact tube, wherein a mounting box connected to the inner cavity of the static contact tube is fixedly connected to the side end of the static contact tube, a blower is fixedly connected to the bottom of the static contact tube via an air pipe, a collecting plate is fixedly connected to the inner wall of the mounting box via a connecting frame, and a static contact assembly is fixedly connected to the collecting plate at the end away from the static contact tube;

[0009] A movable contact seat, the outer surface of which is fitted with the mounting box, a contact fixedly connected to the side end of the movable contact seat and abutting against the static contact assembly, and the movable contact seat is rotatably connected to the fixed seat through the movable contact box at the end away from the mounting box;

[0010] A fixed tube, the top end of which is fixedly connected to the fixed seat, and the side end of the contact is fixedly connected to a moving contact cable which sequentially passes through the moving contact seat, the moving contact box and the inner cavity of the fixed tube.

[0011] As a further solution of the present invention: air outlet holes are respectively opened around the bottom of the fixed tube, and a frustum-shaped protective cover is fixedly connected to the outer wall of the fixed tube.

[0012] As a further solution of the present invention: the side end of the static contact tube is communicated with the inner cavity of the installation box through a shunt pipe.

[0013] As a further solution of the present invention: the static contact assembly is provided with two groups, and is located at the upper and lower ends of the contact. The static contact assembly includes: a power transmission line, a static contact joint and a positioning assembly. The two ends of the power transmission line are respectively fixedly connected to the collecting plate and the static contact joint. The static contact joint and the contact are both wedge-shaped, and the static contact joint is fixedly connected to the positioning assembly through a damping plate at the end away from the contact. The positioning assembly is fixedly connected to the inner wall of the mounting box at the end away from the damping plate.

[0014] As a further solution of the present invention: the positioning assembly is provided with two groups, and is symmetrically arranged along the axial cross-section of the static contact joint. The positioning assembly includes: a positioning column, a positioning tube and a spring. The bottom end of the positioning column is fixedly connected to the damping plate, the top end of the positioning tube is fixedly connected to the inner wall of the installation box, and is sleeved on the positioning column. The upper and lower ends of the spring arranged in the positioning tube are respectively fixedly connected to the positioning column and the inner wall of the installation box.

[0015] As a further solution of the present invention: the outer wall of the transmission line is sleeved with a wire harness, and the side end of the wire harness is fixedly connected to the inner wall of the installation box.

[0016] As a further solution of the present invention: a rotating groove is opened inside the fixed seat along the axis of the fixed tube, the inner wall of the rotating groove is clamped and connected to the rotating seat, the outer wall of the rotating seat is fixedly connected to the driven gear, and the top end is fixedly connected to the moving contact box through a support plate.

[0017] As a further solution of the present invention: the driven gear is meshingly connected to a driving gear disc, the fixed tube is fixedly connected to a servo motor via a fixing frame, and the output end of the servo motor is fixedly connected to the bottom end of the driving gear disc.

[0018] As a further solution of the present invention: the movable contact seat is provided with an expansion opening at one end away from the movable contact box, and a baffle for blocking the inlet end of the installation box is fixedly connected to the side end of the movable contact seat.

[0019] As a further solution of the present invention: the inlet end of the installation box is connected with a flap through a connecting rod, the side end of the connecting rod is in contact with the flap, and does not contact the dynamic contact seat, the flap is perpendicular to the baffle, and the side end is in contact with the baffle, and the side end of the baffle is fixedly connected to a number of limit plates, and the flap is in contact with the limit plate at the end away from the dynamic contact seat.

[0020] Beneficial effects of the present invention:

[0021] 1. The moving contact box rotates on the fixed seat. The moving contact box drives the moving contact seat to drive the contact to rotate. When the contact enters the installation box from the inlet end, the running blower passes the filtered air into the static contact tube through the air pipe. The air is driven by the blower to form an airflow. The airflow flows vertically upward along the inner cavity of the static contact tube and then enters the installation box. The airflow cleans the dust attached to the surface of the contact and the static contact assembly. The dust flows out from the outlet end of the installation box along with the airflow, thereby achieving the effect of cleaning the dust on the surface of the contact and the static contact assembly, and avoiding the phenomenon that the dust adheres to the surface of the contact and causes the contact resistance to increase.

[0022] 2. When the contacts and the static contact assembly are in abutment with each other, the contacts and the static contact assembly form a closed circuit with the moving contact cable and the static contact cable. When the contacts and the static contact assembly run for a long time, heat will be generated. The airflow can take the heat away from the installation box, thereby achieving the effect of air cooling the contacts and the static contact assembly. Among them, the airflow flows from the static contact tube cavity, and the airflow can eliminate the heat generated by the static contact cable, thereby achieving the effect of heat dissipation for the static contact cable. When the airflow flows out of the installation box, the airflow can flow into the inner cavity of the moving contact seat, and then the airflow flows along the inner cavity of the moving contact box, the fixed seat and the fixed tube in turn, thereby achieving the effect of heat dissipation for the moving contact cable.

[0023] 3. When the contact and the static contact assembly are separated, an arc will be generated between the contact and the static contact assembly. Dust will interfere with the arc extinguishing process, causing the arc to reignite or prolong the arc duration, which will not only burn the contacts but may also cause other electrical faults. The airflow will discharge the dust in the installation box from the inlet end of the installation box to prevent the dust from being suspended in the installation box, thereby avoiding the impact of dust on the arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a front view of the overall structure of the present invention;

[0027] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 4 BB is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 5 It is a cross-sectional view of the overall structure CC of the present invention;

[0030] Figure 6For the present invention Figure 5 A magnified schematic diagram of the structure at A;

[0031] Figure 7 This is a schematic diagram of the installation box structure of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the static contact assembly of the present invention;

[0033] Figure 9 It is a schematic diagram of the structure of the dynamic contact seat of the present invention;

[0034] Figure 10 It is a schematic structural diagram of the movable contact box of the present invention;

[0035] Figure 11 It is a schematic diagram of the structure of the contact and the static contact joint of the present invention.

[0036] In the figure: 1. static contact tube; 2. air supply pipe; 3. blower; 4. installation box; 5. flap; 6. baffle; 7. dynamic contact seat; 8. dynamic contact box; 9. support plate; 10. driven gear; 11. driving gear plate; 12. servo motor; 13. fixing frame; 14. fixing tube; 15. protective cover; 16. limit plate; 17. shunt tube; 18. fixing seat; 19. dynamic contact cable; 20. static contact cable; 21. air outlet; 22. contact; 23. collecting plate; 24. rotating seat; 25. rotating groove; 26. connecting rod; 27. connecting frame; 28. transmission line; 29. cable harness; 30. static contact joint; 31. damping plate; 32. positioning column; 33. positioning tube; 34. spring; 35. expansion mouth. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] like Figures 1-11 As shown, a starting disconnector for a pumped storage power station comprises: a static contact tube 1, a moving contact seat 7 and a fixed tube 14;

[0039] The side end of the static contact tube 1 is fixedly connected to a mounting box 4 that is in communication with the inner cavity of the static contact tube 1. The bottom of the static contact tube 1 is fixedly connected to a blower 3 through an air supply pipe 2. The inner wall of the mounting box 4 is fixedly connected to a collecting plate 23 through a connecting frame 27. The collecting plate 23 is fixedly connected to a static contact assembly at the end away from the static contact tube 1. The outer surface of the moving contact seat 7 is fitted with the mounting box 4. The side end of the moving contact seat 7 is fixedly connected to a contact 22 that abuts against the static contact assembly. The moving contact seat 7 is rotatably connected to the fixed seat 18 through the moving contact box 8 at the end away from the mounting box 4. The top of the fixed tube 14 is fixedly connected to the fixed seat 18. The side end of the contact 22 is fixedly connected to a moving contact cable 19 that passes through the moving contact seat 7, the moving contact box 8 and the inner cavity of the fixed tube 14 in sequence. When the starting isolating switch is installed outdoors, dust will adhere to the surface of the contact 22 and the static contact assembly. When the contact 2 When it is necessary to abut against the static contact assembly for closing, the moving contact box 8 rotates on the fixed seat 18, and the moving contact box 8 drives the moving contact seat 7 to rotate, and the moving contact seat 7 drives the contact 22 to rotate. When the contact 22 enters the installation box 4 from the inlet end of the installation box 4, the blower 3 starts, and the blower 3 passes the filtered air into the static contact tube 1 through the air supply pipe 2. The air is driven by the blower 3 to form an airflow, and the airflow flows vertically upward along the inner cavity of the static contact tube 1, and then enters the installation box 4. The airflow cleans the dust attached to the surface of the contact 22 and the static contact assembly, and the dust flows out from the outlet end of the installation box 4 along with the airflow, thereby achieving the effect of cleaning the dust on the surface of the contact 22 and the static contact assembly, and avoiding the phenomenon that the dust adheres to the surface of the contact 22 and causes the resistance of the contact 22 to increase.

[0040] When the contact 22 and the static contact assembly are in abutment with each other, the contact 22 and the static contact assembly form a closed circuit with the moving contact cable 19 and the static contact cable 20. The contact 22 and the static contact assembly will generate heat during long-term operation. In order to avoid the heat affecting the normal operation of the contact 22 and the static contact assembly, the airflow can take the heat away from the installation box 4, thereby achieving the effect of air cooling the contact 22 and the static contact assembly. Among them, the airflow flows from the cavity of the static contact tube 1, and the airflow can eliminate the heat generated by the static contact cable 20, thereby achieving the effect of dissipating heat for the static contact cable 20. When the airflow flows out of the installation box 4, the airflow can flow into the inner cavity of the moving contact seat 7, and then the airflow flows along the inner cavity of the moving contact box 8, the fixed seat 18 and the fixed tube 14 in turn, so that the airflow achieves the effect of dissipating heat for the moving contact cable 19.

[0041] When the contact 22 and the static contact assembly are separated, an arc will be generated between the contact 22 and the static contact assembly. Dust will interfere with the arc extinguishing process, causing the arc to reignite or prolong the arc duration, which will not only burn the contact 22, but may also cause other electrical faults. The airflow will discharge the dust in the installation box 4 from the inlet end of the installation box 4 to prevent the dust from being suspended in the installation box 4, thereby avoiding the influence of dust on the arc.

[0042] In some specific embodiments, air outlet holes 21 are respectively opened around the bottom of the fixed tube 14, and a truncated cone-shaped protective cover 15 is fixedly connected to the outer wall of the fixed tube 14. When the air flow flows vertically downward along the inner cavity of the fixed tube 14, the air flow flows out from the air outlet holes 21. In order to prevent debris from entering the fixed tube 14 through the air outlet holes 21 due to the influence of wind, when the debris moves toward the air outlet holes 21, the protective cover 15 can block the debris and prevent the debris from entering the fixed tube 14 through the air outlet holes 21. The shape of the protective cover 15 can cover and protect the air outlet holes 21 on the horizontal plane.

[0043] In some specific embodiments, the side end of the static contact tube 1 is interconnected with the inner cavity of the installation box 4 through the diverter tube 17. When the contact 22 enters the inlet end of the installation box 4, in order to better clean the dust on the surface of the contact 22, when the airflow flows out from the outlet end of the static contact tube 1, the airflow can be diverted through the diverter tube 17. When the airflow enters the installation box 4 through the diverter tube 17, the airflow can clean the dust on the surface of the contact 22 that has just entered the inlet end, thereby improving the efficiency of cleaning the dust on the surface of the contact 22.

[0044] In some specific embodiments, two groups of static contact components are provided, and are located at the upper and lower ends of the contact 22. The static contact components include: a power line 28, a static contact connector 30, and a positioning component. The two ends of the power line 28 are fixedly connected to the collecting plate 23 and the static contact connector 30, respectively. The static contact connector 30 and the contact 22 are both wedge-shaped, and the static contact connector 30 is fixedly connected to the positioning component through a damping plate 31 at the end away from the contact 22. The positioning component is fixedly connected to the inner wall of the installation box 4 at the end away from the damping plate 31. When the contact 22 and the static contact connector 30 come into contact, the contact 22 squeezes the static contact connector 30, and the static contact connector 30 is subjected to the contact 22. The extrusion force moves in the direction away from the contact 22, and the static contact joint 30 squeezes the positioning assembly, wherein the static contact joint 30 is connected to the positioning assembly through the damping plate 31. The damping plate 31 has insulation to prevent current from flowing into the positioning assembly. When the moving contact seat 7 and the inlet end of the mounting box 4 are abutted, the contact 22 and the static contact joint 30 are fully abutted, and the current can flow into the contact 22 through the moving contact cable 19, and then flow into the transmission line 28 through the static contact joint 30, and then gather at the collecting plate 23, and then flow through the static contact cable 20, thereby achieving the effect of closing the circuit of the generator motor.

[0045] When the contact 22 and the static contact joint 30 are used for a long time, the surfaces of the contact 22 and the static contact joint 30 will wear out. The wear on the surfaces of the contact 22 and the static contact joint 30 will cause the contact 22 and the static contact joint 30 to be unable to fully contact each other, thereby causing poor contact between the contact 22 and the static contact joint 30. In the present invention, when the surfaces of the contact 22 and the static contact joint 30 are worn, the static contact joint 30 supports the upper and lower ends of the contact 22 through the positioning component, and the shapes of the contact 22 and the static contact joint 30 can ensure that the two are in full contact, thereby avoiding the phenomenon that the contact 22 and the static contact joint 30 cannot make full contact. Among them, the edges around the contact 22 are all rounded, and when the contact 22 and the static contact joint 30 are in contact, the edges of the contact 22 are prevented from wearing the surface of the static contact joint 30.

[0046] In some specific embodiments, two groups of positioning components are provided, and are symmetrically arranged along the axial cross-section of the static contact joint 30. The positioning components include: a positioning column 32, a positioning tube 33 and a spring 34. The bottom end of the positioning column 32 is fixedly connected to the damping plate 31, and the top end of the positioning tube 33 is fixedly connected to the inner wall of the installation box 4 and is sleeved on the positioning column 32. The upper and lower ends of the spring 34 arranged in the positioning tube 33 are respectively fixedly connected to the positioning column 32 and the inner wall of the installation box 4. When the static contact joint 30 squeezes the positioning component, the static contact joint 30 squeezes the positioning column 32 through the damping plate 31, and the positioning column 32 slides along the inner wall of the spring 34. At the same time, the positioning column 32 begins to squeeze the spring 34. The spring 34 is compressed and generates elastic tension. The elastic tension is transmitted to the static contact joint 30 through the positioning column 32 and the damping plate 31, thereby ensuring that the static contact joint 30 squeezes the contact 22. The positioning component can position the movement of the static contact joint 30 to prevent the static contact joint 30 from offsetting and overturning.

[0047] In some specific embodiments, the outer wall of the transmission line 28 is sleeved with a cable tie rack 29, and the side end of the cable tie rack 29 is fixedly connected to the inner wall of the installation box 4. When the static contact joint 30 is squeezed and moved, the static contact joint 30 will move with the transmission line 28. The transmission line 28 has sufficient length to avoid the phenomenon that the transmission line 28 is insufficient in length and breaks when the static contact joint 30 and the contact 22 are in contact. When the transmission line 28 moves following the static contact joint 30, the transmission line 28 slides along the cable tie rack 29, and the cable tie rack 29 limits the transmission line 28 to avoid the transmission line 28 from naturally sagging due to its own gravity and getting entangled with the static contact joint 30. At the same time, the cable tie rack 29 can provide support for the transmission line 28 to avoid the connection between the two ends of the transmission line 28 and the collecting plate 23 and the static contact joint 30 from loosening due to the long-term action of their own gravity, thereby avoiding poor contact at the connection between the two ends of the transmission line 28.

[0048] In some specific embodiments, a rotating groove 25 is opened inside the fixed seat 18 along the axial center line of the fixed tube 14, and the inner wall of the rotating groove 25 is clamped and connected to the rotating seat 24, and the outer wall of the rotating seat 24 is fixedly connected to the driven gear 10, and the top is fixedly connected to the moving contact box 8 through the support plate 9, and the driven gear 10 is meshingly connected to the driving sprocket 11, and the fixed tube 14 is fixedly connected to the servo motor 12 through the fixed frame 13, and the output end of the servo motor 12 is fixedly connected to the bottom end of the driving sprocket 11. When the moving contact box 8 rotates, the servo motor 12 runs, and the output end of the servo motor 12 rotates to drive the driving sprocket 11 to rotate. The driving sprocket 11 drives the driven gear 10 to rotate through the meshing connection, and the driven gear 10 drives the rotating seat 24 to rotate along the inner wall of the rotating groove 25. The rotating seat 24 drives the moving contact box 8 to rotate through the support plate 9, thereby realizing the function of providing driving force for the rotation of the moving contact box 8.

[0049] In some specific embodiments, the dynamic contact seat 7 is provided with an expansion opening 35 at the end away from the dynamic contact box 8, and the side end of the dynamic contact seat 7 is fixedly connected to a baffle 6 for blocking the inlet end of the installation box 4. The inlet end of the installation box 4 is connected with a flap 5 through a connecting rod 26, and the side end of the connecting rod 26 is in contact with the flap 5 and does not contact the dynamic contact seat 7. The flap 5 is perpendicular to the baffle 6, and the side end is in contact with the baffle 6. The side end of the baffle 6 is fixedly connected to a number of limit plates 16, and the flap 5 is in contact with the limit plate 16 at the end away from the dynamic contact seat 7. When the airflow flows out of the installation box 4, in order to ensure that the airflow fully enters the inner cavity of the dynamic contact seat 7, when the dynamic contact seat 7 starts to move toward the inlet end of the installation box 4, the dynamic contact seat 7 first contacts the flap 5, and the dynamic contact seat 7 contacts the flap 5 is abutted, and the moving dynamic contact seat 7 slides along the surface of the flap 5. At the same time, the top of the flap 5 rotates along the axis of the connecting rod 26. When the dynamic contact seat 7 and the inlet end of the installation box 4 are abutted, the dynamic contact seat 7 and the flap 5 are no longer in contact, and the flap 5 is reset by its own gravity, so that the flap 5 blocks the inlet end of the installation box 4, and when the dynamic contact seat 7 enters the inlet end, the dynamic contact seat 7 rotates with the baffle 6. When the flap 5 is reset, the flap 5 rotates along the surface of the baffle 6, and the baffle 6 can block another part of the inlet end, so that the flap 5 and the baffle 6 fully block the inlet end, and when the air flows out of the installation box 4, the air will not flow out from the outlet end, so as to fully enter the inner cavity of the moving contact seat 7.

[0050] When the contacts 22 and the static contact joint 30 are in abutment with each other, the contacts 22 and the static contact joint 30 block the flow of airflow, and the airflow will flow along the upper and lower ends of the mounting box 4. In order to avoid the influence of the contacts 22 on the obstruction of the inlet end of the moving contact seat 7, the airflow can enter the inner cavity of the moving contact seat 7 through the expansion opening 35. The expansion opening 35 increases the effective area of the airflow entering the inner cavity of the moving contact seat 7, thereby increasing the efficiency of the airflow entering the inner cavity of the moving contact seat 7 and reducing the pressure in the mounting box 4. In order to avoid the airflow blowing open the flap 5 and causing the airflow to flow out from the gap between the flap 5 and the inlet end, when the flap 5 is impacted by the airflow, the limit plate 16 limits and blocks the flap 5 to avoid the flap 5 from opening and causing a gap between the flap 5 and the inlet end.

[0051] The above describes several embodiments of the present invention in detail, but the embodiments of the present invention are not limited to these and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A starting disconnect switch for a pumped storage power station, characterized in that: include: A static contact tube (1), wherein a side end of the static contact tube (1) is fixedly connected to a mounting box (4) communicating with an inner cavity of the static contact tube (1), a bottom of the static contact tube (1) is fixedly connected to a blower (3) via an air delivery pipe (2), an inner wall of the mounting box (4) is fixedly connected to a collecting plate (23) via a connecting frame (27), and the collecting plate (23) is fixedly connected to a static contact assembly at an end away from the static contact tube (1); A movable contact seat (7), wherein the outer surface of the movable contact seat (7) is fitted and connected to the mounting box (4), a contact (22) that abuts against the static contact assembly is fixedly connected to the side end of the movable contact seat (7), and the movable contact seat (7) is rotatably connected to the fixed seat (18) through the movable contact box (8) at the end away from the mounting box (4); A fixed tube (14), the top end of the fixed tube (14) is fixedly connected to the fixed seat (18), and the side end of the contact (22) is fixedly connected to a moving contact cable (19) that sequentially passes through the moving contact seat (7), the moving contact box (8) and the inner cavity of the fixed tube (14); The static contact assembly is provided with two groups and is located at the upper and lower ends of the contact (22). The static contact assembly includes: a transmission line (28), a static contact joint (30) and a positioning assembly. The two ends of the transmission line (28) are fixedly connected to the collecting plate (23) and the static contact joint (30), respectively. The static contact joint (30) and the contact (22) are both wedge-shaped. The static contact joint (30) is fixedly connected to the positioning assembly at one end away from the contact (22) through a damping plate (31). The positioning assembly is fixedly connected to the mounting box ( 4) The inner wall is fixedly connected. The positioning assembly is provided with two groups and is symmetrically arranged along the axial section of the static contact joint (30). The positioning assembly includes: a positioning column (32), a positioning tube (33) and a spring (34). The bottom end of the positioning column (32) is fixedly connected to the damping plate (31). The top end of the positioning tube (33) is fixedly connected to the inner wall of the installation box (4) and is sleeved on the positioning column (32). The upper and lower ends of the spring (34) arranged in the positioning tube (33) are fixedly connected to the positioning column (32) and the inner wall of the installation box (4) respectively.

2. A starting disconnector for a pumped storage power station according to claim 1, characterized in that: Air outlet holes (21) are respectively provided around the bottom of the fixed tube (14), and a truncated cone-shaped protective cover (15) is fixedly connected to the outer wall of the fixed tube (14).

3. A starting disconnector for a pumped storage power station according to claim 1, characterized in that: The side end of the static contact tube (1) is communicated with the inner cavity of the installation box (4) via a shunt tube (17).

4. A starting disconnector for a pumped storage power station according to claim 1, characterized in that: The outer wall of the transmission line (28) is sleeved with a wire harness rack (29), and the side end of the wire harness rack (29) is fixedly connected to the inner wall of the installation box (4).

5. A starting disconnector for a pumped storage power station according to claim 1, characterized in that: A rotating groove (25) is provided inside the fixed seat (18) along the axis of the fixed tube (14); the inner wall of the rotating groove (25) is connected to the rotating seat (24); the outer wall of the rotating seat (24) is fixedly connected to the driven gear (10), and the top end is fixedly connected to the moving contact box (8) through a support plate (9).

6. A starting disconnector for a pumped storage power station according to claim 5, characterized in that: The driven gear (10) is meshingly connected to a driving gear disc (11), the fixed tube (14) is fixedly connected to a servo motor (12) via a fixing frame (13), and the output end of the servo motor (12) is fixedly connected to the bottom end of the driving gear disc (11).

7. A starting disconnector for a pumped storage power station according to claim 1, characterized in that: The movable contact seat (7) is provided with an expansion opening (35) at one end away from the movable contact box (8), and a baffle (6) for blocking the inlet end of the installation box (4) is fixedly connected to the side end of the movable contact seat (7).

8. A starting disconnector for a pumped storage power station according to claim 7, characterized in that: The inlet end of the installation box (4) is connected to a flap (5) through a connecting rod (26), the side end of the connecting rod (26) is in contact with the flap (5) and does not contact the dynamic contact seat (7), the flap (5) is perpendicular to the baffle (6), and the side end is in contact with the baffle (6), the side end of the baffle (6) is fixedly connected to a plurality of limit plates (16), and the flap (5) is in contact with the limit plate (16) at the end away from the dynamic contact seat (7).

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