Rapid working condition switching device for protection and debugging of pumped storage unit

Abstract

The invention discloses a rapid working condition switching device for pumped storage group protection debugging, which comprises a bus, an air switch, a fuse, a button assembly, a first relay group directly controlled by the button assembly, a linkage contact group, a second relay group controlled by the linkage contact group, and a wiring hole plate connected with contacts of the second relay group, the button assembly comprises a first button SB1 corresponding to a power generation working condition, a second button SB2 corresponding to a phase modulation working condition, a third button SB3 corresponding to a power generation starting working condition, a fourth button SB4 corresponding to a water pumping working condition, a fifth button SB5 corresponding to the water pumping phase modulation working condition, a sixth button SB6 corresponding to a working condition of a towing machine, and a seventh button SB7 corresponding to a working condition of a towed machine. The eighth button SB8 corresponds to an electric braking working condition; and the ninth button SB9 corresponds to a black-start working condition. The efficiency and the safety of unit protection debugging can be improved.

Description

Technical Field

[0001] The invention relates to a rapid working condition switching device, in particular to a rapid working condition switching device used for protection and debugging of a pumped storage unit. Background Art

[0002] Pumped-storage units have both basic working modes, namely water pumps and turbines, and have many operating modes, generally including more than a dozen operating conditions such as power generation operation, power generation phase adjustment, pumping operation, pumping phase adjustment, SFC starting, back-to-back starting, back-to-back dragging, power generation starting, electric braking, and rotating standby. The unit has more than 30 protection functions. Under each operating condition, some protection functions cannot be applied and may cause false operation, posing a great safety hazard. Summary of the invention

[0003] The purpose of the present invention is to provide a fast working condition switching device for protection and commissioning of pumped storage units, which can improve the efficiency and safety of unit protection and commissioning.

[0004] The technical solution of the present invention is as follows: a fast operating condition switching device for protection and debugging of a pumped storage unit, comprising a bus, an air switch, a fuse, a button assembly, a first relay group directly controlled by the button assembly, a linkage contact group, a second relay group controlled by the linkage contact group, and a wiring hole plate to which the contacts of the second relay group are connected, wherein the button assembly comprises a first button SB1 corresponding to a power generation condition, a second button SB2 corresponding to a phase adjustment condition, a third button SB3 corresponding to a power generation start condition, a fourth button SB4 corresponding to a pumping condition, a fifth button SB5 corresponding to a pumping phase adjustment condition, a sixth button SB6 corresponding to a traction machine condition, a seventh button SB7 corresponding to a traction machine condition, an eighth button SB8 corresponding to an electrical braking condition, and a ninth button SB9 corresponding to a black start condition.

[0005] In the aforementioned fast operating condition switching device for protection and debugging of pumped storage units, the linkage contact group includes a first linkage contact S1, a second linkage contact S2, a third linkage contact S3, a fourth linkage contact S4, a fifth linkage contact S5, a sixth linkage contact S6, a seventh linkage contact S7, an eighth linkage contact S8, and a ninth linkage contact S9.

[0006] In the aforementioned fast operating condition switching device for protection and debugging of a pumped storage unit, the first relay group includes a first relay K21, a second relay K22, a third relay K23, a fourth relay K24, a fifth relay K25, a sixth relay K26, a seventh relay K27, an eighth relay K28, and a ninth relay K29; the first relay K21 corresponds to the first linkage contact S1 and the second linkage contact S2; the second relay K22 corresponds to the first linkage contact S1, the second linkage contact S2 and the ninth linkage contact S8; the third relay K23 corresponds to the second linkage contact S2; the fourth relay K24 corresponds to the first linkage contact S1 and the fourth linkage contact S4; the fifth linkage contact S5 corresponds to the first linkage contact S1, the second linkage contact S2 and the ninth linkage contact S9; the sixth linkage contact S6 corresponds to the fifth linkage contact S5; the seventh relay K27 corresponds to the fourth linkage contact S4; the eighth relay K28 corresponds to the sixth linkage contact S6; and the ninth relay K29 corresponds to the eighth linkage contact S8.

[0007] In the aforementioned fast operating condition switching device for protection and debugging of a pumped storage unit, the second relay group includes a tenth relay K11, an eleventh relay K12, a twelfth relay K13, a thirteenth relay K14, a fourteenth relay K15, a fifteenth relay K16, a sixteenth relay K17, a seventeenth relay K18, and an eighteenth relay K19; the tenth relay K11 is connected in series with the first linkage contact S1; the eleventh relay K12 is connected in series with the second linkage contact S2; the twelfth relay K13 is connected in series with the third linkage contact S3; the thirteenth relay K14 is connected in series with the fourth linkage contact S4; the fourteenth relay K15 is connected in series with the fifth linkage contact S5; the fifteenth relay K16 is connected in series with the sixth linkage contact S6; the sixteenth relay K17 is connected in series with the seventh linkage contact S7; the seventeenth relay K18 is connected in series with the eighth linkage contact S8; and the eighteenth relay K19 is connected in series with the ninth linkage contact S9.

[0008] In the aforementioned rapid operating condition switching device for protection and debugging of a pumped storage unit, the button assembly is provided with a protective shell for protecting the button assembly.

[0009] In the aforementioned rapid operating condition switching device for protection and debugging of a pumped storage unit, the protective shell includes a frame support connected to the outside of a button assembly, a cover plate that can be separated from the frame support is provided on the frame support, a lock is provided under the cover plate, a step groove for installing the cover plate is provided on the upper end surface of the frame support, a lock seat corresponding to the lock is provided under the step groove, a first sealing gasket is provided in the step groove, a second sealing gasket is provided on the connecting surface between the frame support and the button assembly, and a connecting angle iron is provided outside the frame support.

[0010] In the aforementioned rapid operating condition switching device for protection and debugging of pumped storage units, the lock comprises a mounting seat installed in the middle of the lower end of the cover plate, a bidirectional screw and a guide rod in the same direction as the length direction of the cover plate are provided in the mounting seat, screw seats are provided at both ends of the bidirectional screw and the guide rod, a locking block corresponding to the lock seat is provided on the screw seat, a first bevel gear fixed to the middle of the bidirectional screw is provided in the mounting seat, a second bevel gear corresponding to the first bevel gear is provided on one side of the first bevel gear, a rotating sleeve fixed in the cover plate is provided on one side of the second bevel gear, and a matching groove is provided at the bottom of the rotating sleeve.

[0011] In the aforementioned rapid operating condition switching device for protection and debugging of a pumped storage unit, the lock seat includes a support plate arranged on the lower side of the cover plate and parallel to the cover plate, and a wedge block is provided on the side of the support plate facing away from the cover plate.

[0012] In the aforementioned rapid operating condition switching device for protection and debugging of a pumped storage unit, a slot corresponding to the rotating sleeve is provided in the cover plate.

[0013] Compared with the prior art, the present invention can realize rapid switching of protection and debugging working conditions of the pumped storage unit through a button assembly, improve debugging and detection efficiency, reduce the possibility of errors occurring during working condition switching, and provide better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the control part of the present invention;

[0016] Figure 3 It is a schematic structural diagram of a wiring hole plate of the present invention;

[0017] Figure 4 It is a schematic structural diagram of the protective shell of the present invention.

[0018] The marks in the accompanying drawings are: 1-protective shell, 2-frame support, 3-cover plate, 4-step groove, 5-lock, 6-lock seat, 7-first sealing gasket, 8-second sealing gasket, 9-connecting angle iron, 10-mounting seat, 11-bidirectional screw, 12-guide rod, 13-screw seat, 14-locking block, 15-support plate, 16-wedge block, 17-first bevel gear, 18-second bevel gear, 19-rotating sleeve, 20-matching groove, 21-card groove. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] Embodiment. Figure 1-4As shown, a fast operating condition switching device for protection and debugging of a pumped storage unit includes a bus, an air switch, a fuse, a button assembly, a first relay group directly controlled by the button assembly, a linkage contact group, a second relay group controlled by the linkage contact group, and a wiring hole plate to which the contacts of the second relay group are connected. The button assembly includes a first button SB1 corresponding to a power generation condition, a second button SB2 corresponding to a phase adjustment condition, a third button SB3 corresponding to a power generation start condition, a fourth button SB4 corresponding to a pumping condition, a fifth button SB5 corresponding to a pumping phase adjustment condition, a sixth button SB6 corresponding to a traction machine condition, a seventh button SB7 corresponding to a traction machine condition, an eighth button SB8 corresponding to an electrical braking condition, and a ninth button SB9 corresponding to a black start condition.

[0021] The linkage contact group includes a first linkage contact S1, a second linkage contact S2, a third linkage contact S3, a fourth linkage contact S4, a fifth linkage contact S5, a sixth linkage contact S6, a seventh linkage contact S7, an eighth linkage contact S8, and a ninth linkage contact S9.

[0022] The first relay group includes a first relay K21, a second relay K22, a third relay K23, a fourth relay K24, a fifth relay K25, a sixth relay K26, a seventh relay K27, an eighth relay K28, and a ninth relay K29; the first relay K21 corresponds to the first linkage contact S1 and the second linkage contact S2; the second relay K22 corresponds to the first linkage contact S1, the second linkage contact S2 and the ninth linkage contact S8; the third relay K23 corresponds to the second linkage contact S2; the fourth relay K24 corresponds to the first linkage contact S1 and the fourth linkage contact S4; the fifth linkage contact S5 corresponds to the first linkage contact S1, the second linkage contact S2 and the ninth linkage contact S9; the sixth linkage contact S6 corresponds to the fifth linkage contact S5; the seventh relay K27 corresponds to the fourth linkage contact S4; the eighth relay K28 corresponds to the sixth linkage contact S6; and the ninth relay K29 corresponds to the eighth linkage contact S8.

[0023] The second relay group includes a tenth relay K11, an eleventh relay K12, a twelfth relay K13, a thirteenth relay K14, a fourteenth relay K15, a fifteenth relay K16, a sixteenth relay K17, a seventeenth relay K18, and an eighteenth relay K19; the tenth relay K11 is connected in series with the first linkage contact S1; the eleventh relay K12 is connected in series with the second linkage contact S2; the twelfth relay K13 is connected in series with the third linkage contact S3; the thirteenth relay K14 is connected in series with the fourth linkage contact S4; the fourteenth relay K15 is connected in series with the fifth linkage contact S5; the fifteenth relay K16 is connected in series with the sixth linkage contact S6; the sixteenth relay K17 is connected in series with the seventh linkage contact S7; the seventeenth relay K18 is connected in series with the eighth linkage contact S8; and the eighteenth relay K19 is connected in series with the ninth linkage contact S9.

[0024] The button assembly is provided with a protective shell 1 for protecting the button assembly.

[0025] The protective shell 1 includes a frame-shaped support 2 connected to the outside of the button assembly, a cover plate 3 that can be separated from the frame-shaped support 2 is provided on the frame-shaped support 2, a lock 5 is provided under the cover plate 3, a step groove 4 for installing the cover plate 3 is provided on the upper end surface of the frame-shaped support 2, a lock seat 6 corresponding to the lock 5 is provided under the step groove 4, a first sealing gasket 7 is provided in the step groove 4, a second sealing gasket 8 is provided on the connecting surface between the frame-shaped support 2 and the button assembly, and a connecting angle iron 9 is provided outside the frame-shaped support 2.

[0026] The lock 5 includes a mounting base 10 installed in the middle of the lower end of the cover plate 3, a bidirectional screw 11 and a guide rod 12 in the same direction as the length direction of the cover plate 3 are provided in the mounting base 10, screw seats 13 are provided at both ends of the bidirectional screw 11 and the guide rod 12, a locking block 14 corresponding to the lock seat 6 is provided on the screw seat 13, a first bevel gear 17 fixed to the middle of the bidirectional screw 11 is provided in the mounting base 10, a second bevel gear 18 corresponding to the first bevel gear 17 is provided on one side of the first bevel gear 17, a rotating sleeve 19 fixed in the cover plate 3 is provided on one side of the second bevel gear 18, and a matching groove 20 is provided at the bottom of the rotating sleeve 19.

[0027] The lock seat 6 comprises a support plate 15 which is arranged at the lower side of the cover plate 3 and is parallel to the cover plate 3 , and a wedge block 16 is arranged on the side of the support plate 15 which is away from the cover plate 3 .

[0028] The cover plate 3 is provided with a slot 21 corresponding to the rotating sleeve 19 .

[0029] This application is powered by AC 220V. After the air switch is closed, the device is powered, and the fuse can protect the device when an overcurrent occurs. When performing rapid switching between different working conditions, first put the button components in the reset state, and further set indicator lights on each button of the button component. When the button component is pressed to connect the line, the indicator light on the button component will light up, making it easier to judge the status of the button component. Then switch the working condition as required, and the working condition switching is achieved by adjusting the control button component. During switching, the contact and knife switch signal status are shown in the following table:

[0030] Buttons SB1-SB9 corresponding working conditions and control switch position signals

[0031] Button Working conditions Knife switch signal status Control contacts SB1 Power generation conditions PRD generation position 1 circuit breaker open position 0 generation phase adjustment 0 S1 S2 SB2 Power generation phase modulation PRD generation position 1 circuit breaker open position 0 generation phase 1 S1 S2 S8 SB3 Power generation start PRD generating position 1 circuit breaker open position 1 S2 SB4 Pumping conditions Drag the knife to close position 1 S1 S3 SB5 Pumping phase adjustment PRD electric position 1 circuit breaker open position 0 pumping phase adjustment 0 S1 S2 S9 SB6 Tractor working condition PRD electric position 1 circuit breaker open position 0 pumping phase adjustment 1 S5 SB7 The dragged machine Dragged switch position 1 Circuit breaker open position 1 S4 SB8 Electric brake condition Electric brake switch closed position 1 Circuit breaker open position 1 S6 SB9 Black Start Circuit breaker open position 1 S7

[0032] If you need to switch to the power generation condition, you only need to press the first button SB1. When the first button SB1 is pressed, the first relay K21 will be connected, and the first relay K21 will control the corresponding first linkage contact S1 and the second linkage contact S2 to act, so as to control the tenth relay K11 and the eleventh relay K12, so that the tenth relay K11 and the eleventh relay K12 are connected, and the contact signals corresponding to the tenth relay K11 and the eleventh relay K12 can be connected to the unit relay protection device through the wire, which is used for the protection device to judge the unit condition, and then effectively open and lock the relevant protection functions. In this way, the working condition can be quickly switched, wherein the knife switch signal state is the contact signal corresponding to the second relay group, and the second relay contact signal is transmitted outward by inserting the external wire into the wiring hole plate, and the wire is connected to the terminal block of the protection device, so that the protection device can automatically judge the working condition according to the signal of this application, and then the protection device can realize the corresponding protection function according to the judged working condition. When switching to other working conditions, first press the first button SB1, and then press the corresponding button to realize the switching of the working condition, and the working efficiency is high.

[0033] Since the working condition can be switched by pressing the button assembly, there is a situation where non-professionals accidentally touch the button assembly and cause the working condition to switch. Therefore, the present application sets a protective shell 1 outside the button assembly to protect the button assembly to prevent outsiders from accidentally touching it. The frame support 2 is fixed to the outside of the button assembly by the cooperation of the fastener and the connecting angle iron 9. When the connecting angle iron is fixed, the second sealing gasket 8 can be pressed. Then the cover plate 3 is fixed in the step groove 4 of the frame support 2, and then the external key is inserted into the rotating sleeve 19 so that the key end is combined with the matching groove 20. The matching groove 20 can adopt a special shape of matching groove, such as a dovetail shape, so that conventional tools cannot drive the rotating sleeve 19 to rotate. When the rotating sleeve 19 rotates, it can drive the two sets of screw seats 13 and the locking block 14 on the screw seat 13 to move toward or away from each other along the bidirectional screw 11 at the same time. When locking, the locking block 14 moves away from the mounting seat 10. Finally, the locking block 14 will be against the wedge block 16. During the movement, it will drive the cover plate 3 to press the first sealing gasket 7 to improve the sealing effect. While protecting the button assembly, it can also reduce the intrusion of external dust and water vapor on the button assembly, thereby improving reliability.

Claims

1. A fast working condition switching device for protection and commissioning of a pumped storage unit, characterized in that: It includes a bus, an air switch, a fuse, a button assembly, a first relay group directly controlled by the button assembly, a linkage contact group, a second relay group controlled by the linkage contact group, and a wiring hole plate to which the contacts of the second relay group are connected. The button assembly includes a first button SB1 corresponding to a power generation condition, a second button SB2 corresponding to a phase adjustment condition, a third button SB3 corresponding to a power generation start condition, a fourth button SB4 corresponding to a pumping condition, a fifth button SB5 corresponding to a pumping phase adjustment condition, a sixth button SB6 corresponding to a traction machine condition, a seventh button SB7 corresponding to a traction machine condition, an eighth button SB8 corresponding to an electrical braking condition, and a ninth button SB9 corresponding to a black start condition.

2. A fast operating condition switching device for protection and commissioning of a pumped storage unit according to claim 1, characterized in that: The linkage contact group includes a first linkage contact S1, a second linkage contact S2, a third linkage contact S3, a fourth linkage contact S4, a fifth linkage contact S5, a sixth linkage contact S6, a seventh linkage contact S7, an eighth linkage contact S8, and a ninth linkage contact S9.

3. A fast operating mode switching device for protection and commissioning of a pumped storage unit according to claim 1, characterized in that: The first relay group includes a first relay K21, a second relay K22, a third relay K23, a fourth relay K24, a fifth relay K25, a sixth relay K26, a seventh relay K27, an eighth relay K28, and a ninth relay K29; The first relay K21 corresponds to the first linkage contact S1 and the second linkage contact S2; the second relay K22 corresponds to the first linkage contact S1, the second linkage contact S2 and the ninth linkage contact S8; the third relay K23 corresponds to the second linkage contact S2; the fourth relay K24 corresponds to the first linkage contact S1 and the fourth linkage contact S4; the fifth linkage contact S5 corresponds to the first linkage contact S1, the second linkage contact S2 and the ninth linkage contact S9; the sixth linkage contact S6 corresponds to the fifth linkage contact S5; the seventh relay K27 corresponds to the fourth linkage contact S4; the eighth relay K28 corresponds to the sixth linkage contact S6; the ninth relay K29 corresponds to the eighth linkage contact S8.

4. A fast operating mode switching device for protection and commissioning of a pumped storage unit according to claim 1, characterized in that: The second relay group includes a tenth relay K11, an eleventh relay K12, a twelfth relay K13, a thirteenth relay K14, a fourteenth relay K15, a fifteenth relay K16, a sixteenth relay K17, a seventeenth relay K18, and an eighteenth relay K19; the tenth relay K11 is connected in series with the first linkage contact S1; the eleventh relay K12 is connected in series with the second linkage contact S2; the twelfth relay K13 is connected in series with the third linkage contact S3; the thirteenth relay K14 is connected in series with the fourth linkage contact S4; the fourteenth relay K15 is connected in series with the fifth linkage contact S5; the fifteenth relay K16 is connected in series with the sixth linkage contact S6; the sixteenth relay K17 is connected in series with the seventh linkage contact S7; the seventeenth relay K18 is connected in series with the eighth linkage contact S8; and the eighteenth relay K19 is connected in series with the ninth linkage contact S9.

5. A fast operating mode switching device for protection and commissioning of a pumped storage unit according to claim 1, characterized in that: The button assembly is provided with a protective shell (1) outside the button assembly for protecting the button assembly.

6. A fast operating condition switching device for protection and commissioning of a pumped storage unit according to claim 5, characterized in that: The protective shell (1) comprises a frame support (2) connected to the outside of the button assembly, the frame support (2) is provided with a cover plate (3) which can be separated from the frame support (2), a lock (5) is provided under the cover plate (3), the upper end surface of the frame support (2) is provided with a stepped groove (4) for installing the cover plate (3), a lock seat (6) corresponding to the lock (5) is provided under the stepped groove (4), a first sealing gasket (7) is provided in the stepped groove (4), a second sealing gasket (8) is provided on the connecting surface between the frame support (2) and the button assembly, and a connecting angle iron (9) is provided outside the frame support (2).

7. A fast operating mode switching device for protection and commissioning of a pumped storage unit according to claim 6, characterized in that: The lock (5) comprises a mounting seat (10) mounted on the middle part of the lower end of the cover plate (3); a bidirectional screw rod (11) and a guide rod (12) in the same direction as the length direction of the cover plate (3) are provided in the mounting seat (10); screw rod seats (13) are provided at both ends of the bidirectional screw rod (11) and the guide rod (12); a locking block (14) corresponding to the lock seat (6) is provided on the screw rod seat (13); a first bevel gear (17) fixed to the middle part of the bidirectional screw rod (11) is provided in the mounting seat (10); a second bevel gear (18) corresponding to the first bevel gear (17) is provided on one side of the first bevel gear (17); a rotating sleeve (19) fixed in the cover plate (3) is provided on one side of the second bevel gear (18); a matching groove (20) is provided at the bottom of the rotating sleeve (19).

8. A fast operating mode switching device for protection and commissioning of a pumped storage unit according to claim 6, characterized in that: The lock seat (6) comprises a support plate (15) arranged on the lower side of the cover plate (3) and parallel to the cover plate (3), and a wedge block (16) is arranged on the side of the support plate (15) facing away from the cover plate (3).

9. A fast operating mode switching device for protection and commissioning of a pumped storage unit according to claim 6, characterized in that: The cover plate (3) is provided with a slot (21) corresponding to the rotating sleeve (19).

Images