A remote control mechanism for load switches on the high-voltage side of an American transformer

Abstract

The present invention relates to a remote control mechanism for a load switch on the high-voltage side of an American-style transformer, comprising a box, a bracket, a rotating shaft and a docking plate, wherein the bracket and the docking plate are arranged at the bottom of the box, the bottom of the box is fixedly connected with a driving assembly, the two ends of the rotating shaft are respectively arranged on the side wall of the box and one side of the driving assembly, and the surface of the rotating shaft is fixedly connected with a touch rod. The present invention provides a remote control mechanism for a load switch on the high-voltage side of an American-style transformer, which can receive a signal from a mobile terminal through a signal receiving module, send a signal to a control module to control the movement of the driving assembly, so that the rotating shaft drives the touch rod and the docking plate to open and close, and sulfur hexafluoride gas is stored inside the extrusion cylinder. When the touch rod and the docking plate are opened, the sulfur hexafluoride gas is discharged from the gas outlet to extinguish the arc, which facilitates the operation of the remote control switch, reduces the damage caused by manual operation to itself, and reduces the cost expenditure.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage load switches, in particular to a remote control mechanism for a high-voltage side load switch of an American-type transformer. Background Art

[0002] A high-voltage load switch refers to a switchgear in a power distribution system that can close, carry, and disconnect currents under normal conditions (which may also include a specified overload factor), and can pass specified abnormal (such as short circuit) currents. In the existing technology, the separation and combination of the high-voltage load isolation power switch of the transformer rely on on-site operation by power management personnel. Since it requires manual on-site operation, it not only brings inconvenience to the operators, but also fails to extinguish the arc quickly and effectively. It is not convenient to clean the dust on the contact rod after long-term use, and the arc extinguishing gas cannot be replenished quickly.

[0003] In view of this, a remote control mechanism for a load switch on the high-voltage side of an American-style transformer is proposed. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a remote control mechanism for an American-style transformer high-voltage side load switch, which can not only control the opening and closing of the switch through a driving mechanism, but also synchronously extinguish the arc during opening, and at the same time has the ability to quickly replenish arc-extinguishing gas.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the present invention is implemented by the following technical scheme: comprising a box, a bracket, a rotating shaft and a docking plate, wherein the bracket and the docking plate are arranged at the bottom of the box, the bottom of the box is fixedly connected with a driving assembly, the two ends of the rotating shaft are respectively arranged on the side wall of the box and one side of the driving assembly, the surface of the rotating shaft is fixedly connected with a touch rod, the driving assembly is used to drive the rotating shaft to flip, and the touch rod cooperates with the docking plate to control its opening and closing, and the inner side wall of the docking plate is provided with an air outlet;

[0008] A buffer spring is fixedly connected to the surface of the rotating shaft, and the top of the buffer spring is fixedly connected to the lower surface of the bracket. A signal receiving module and a control module are provided on the side of the driving component. An extrusion component is provided at one end of the driving component along the first direction, and is used in conjunction with a docking plate to extinguish arcs.

[0009] (III) Beneficial effects

[0010] The present invention provides a remote control mechanism for a load switch on the high-voltage side of an American-style transformer, which has the following beneficial effects:

[0011] 1. This is a remote control mechanism for a load switch on the high-voltage side of an American transformer. The signal receiving module can receive a signal from a mobile terminal, and send a signal to the control module to control the movement of the drive assembly, so that the rotating shaft drives the contact rod and the docking plate to open and close. Sulfur hexafluoride gas is stored inside the extrusion cylinder. When the contact rod and the docking plate are opened, the sulfur hexafluoride gas is discharged from the gas outlet to extinguish the arc, which is convenient for remote control of the switch operation;

[0012] 2. This is an American-style transformer high-voltage side load switch remote control mechanism. The auxiliary tube at one end of the extrusion cylinder can be connected to an external device for storing sulfur hexafluoride. When the piston rod moves to the left, the external gas can be drawn into the interior of the extrusion cylinder through the auxiliary tube. When the piston rod moves to the right, it is convenient to discharge the gas for arc extinguishing, and the left and right movements are used to circulate and replenish the gas.

[0013] 3. This is an American-style transformer high-voltage side load switch remote control mechanism. When the piston rod moves to the left, the gas in the protective shell is squeezed into the inside of the auxiliary cylinder. When the push block presses against the positioning rod, one end of the feeler rod rests on the side of the bracket, and the fixing hole is connected to the exhaust hole. The compression spring pushes the piston ring to move downward quickly, and the lower surface of the bracket top plate generates suction, thereby absorbing the dust accumulated on the end surface of the feeler rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the high-voltage switch cabinet of the present invention;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of a local switch of the present invention;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the protective shell of the present invention;

[0017] Figure 4 This is a schematic diagram of the positioning rod pushing structure of the present invention;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the dust collecting box of the present invention;

[0019] Figure 6 It is a schematic diagram of the top view of the extrusion cylinder and the branch pipe of the present invention;

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the dust collecting box of the present invention;

[0021] Figure 8 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1. box body; 2. bracket; 3. rotating shaft; 4. docking plate; 5. touch rod; 6. protective shell; 7. drive module; 8. screw; 9. sleeve; 10. rack rod; 11. gear rod; 12. extrusion cylinder; 13. piston rod; 14. branch pipe; 15. first one-way valve; 16. air outlet; 17. auxiliary cylinder; 18. dust collection box; 19. positioning rod; 20. push block; 21. reset spring; 22. exhaust hole; 23. fixing hole; 24. piston ring; 25. compression spring; 26. second one-way valve; 27. filter layer; 28. pulley. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0024] See also Figures 1 to 8 The present invention provides a remote control mechanism for a load switch on the high-voltage side of an American-style transformer; it comprises a box body 1, a bracket 2, a rotating shaft 3 and a docking plate 4, the bracket 2 and the docking plate 4 are arranged at the bottom of the box body 1, the bottom of the box body 1 is fixedly connected with a driving component, the two ends of the rotating shaft 3 are respectively arranged on the side wall of the box body 1 and one side of the driving component, the surface of the rotating shaft 3 is fixedly connected with a touch rod 5, the driving component is used to drive the rotating shaft 3 to flip, and the touch rod 5 cooperates with the docking plate 4 to control its opening and closing, and the inner side wall of the docking plate 4 is provided with an air outlet 16;

[0025] like Figure 1 As shown, the surface of the rotating shaft 3 is provided with three equidistant touch rods 5, and a docking plate 4 is provided at the bottom of the box body 1 and corresponds to the touch rods 5. The part of the touch rod 5 close to the rotating shaft is fixedly connected with an auxiliary rod, which can increase the stability of the touch rod bracket 2;

[0026] A support column is provided at one end of the rotating shaft 3 close to the protective shell 6 to support the rotating shaft 3 and maintain stability.

[0027] When the existing high-voltage side load switch is used, the operator is required to manually close and open the switch, which not only increases the workload of the operator, but also reduces the work efficiency of the staff.

[0028] A buffer spring is fixedly connected to the surface of the rotating shaft 3, and the top of the buffer spring is fixedly connected to the lower surface of the bracket 2. A signal receiving module and a control module are provided on the side of the driving component. An extrusion component is provided at one end of the driving component along the first direction, and is used in conjunction with the docking plate 4 to extinguish the arc. The buffer spring can increase the stability of the rotating shaft 3 when it rotates;

[0029] The signal receiving module can be used to receive signals from the mobile terminal, thereby sending signals to the control module. At this time, the control module controls the driving component to drive the touch rod 5 and the docking plate 4 to open and close the switch. The staff can set up equipment matching the signal module on the mobile terminal to facilitate remote control and improve work efficiency.

[0030] The driving assembly includes a protective shell 6 fixedly connected to the bottom of the box body 1, a driving module 7 arranged inside the protective shell 6, a screw 8 arranged at the output end of the driving module 7, a sleeve 9 sleeved on the surface of the screw 8, a rack rod 10 fixedly connected to the upper surface of the sleeve 9, and a gear rod 11 arranged on the upper surface of the rack rod 10 and meshingly connected therewith, one end of the gear rod 11 passes through the inner wall of the protective shell 6 and is detachably connected to the rotating shaft 3.

[0031] like Figure 7 As shown, one end of the gear rod 11 is arranged inside the protective shell 6, and the other end penetrates the protective shell 6 and is plugged into one end of the rotating shaft 3, and the surface of the other end is fixedly connected to a limit strip, and a matching card slot is provided at the part connected to the rotating shaft 3, so as to facilitate its disassembly and assembly;

[0032] The above-mentioned drive module 7 (which can be a motor), signal receiving module and control module are prior art and are only cited here, and the specific structure will not be described in detail;

[0033] The extrusion assembly includes an extrusion cylinder 12 fixedly connected to one end of the protective shell 6 along the first direction, and a piston rod 13 fixedly connected to the right end of the sleeve 9 and extending into the interior of the extrusion cylinder 12 for extruding gas.

[0034] like Figure 2 As shown, the portion where the gear rod 11 passes through the protective shell 6 is provided with corresponding sealing measures, and the purpose of such arrangement is to prevent air leakage in the air flow inside the protective shell 6 when the piston rod 13 moves to the left;

[0035] The inner wall of the sleeve 9 is provided with threads adapted to the surface of the screw 8. When the driving module 7 is started to rotate forward, the screw 8 rotates, and the sleeve 9 contracts to the left along the screw 8, and performs the opposite movement when it is reversed.

[0036] When the piston rod 13 moves to the left, the end connected to the sleeve 9 extends to the inside of the protective shell 6. When the piston rod 13 moves to the right, the gas (sulfur hexafluoride) inside the extrusion cylinder 12 is compressed. According to the above steps, the rack rod 10 and the gear rod 11 make the same movement, synchronously driving the rotating shaft 3 to move.

[0037] One end of the extrusion cylinder 12 along the first direction is fixedly connected to a branch pipe 14, one end of the branch pipe 14 is fixedly connected to the surface of the docking plate 4, a first one-way valve 15 is provided inside the extrusion cylinder 12 and the branch pipe 14, a channel connected to the branch pipe 14 and the air outlet 16 is provided inside the docking plate 4, and an auxiliary pipe is inserted into one end of the extrusion cylinder 12 along the first direction.

[0038] like Figure 2 and Figure 5 As shown, when the gas inside the extrusion cylinder 12 is compressed, the compressed gas is diverted from the branch pipe 14 into the channel inside the docking plate 4 and discharged from the gas outlet 16, so that the arc generated by the touch rod 5 can be extinguished when the switch is opened;

[0039] The auxiliary pipe at one end of the extrusion cylinder 12 is connected to an external device for storing sulfur hexafluoride gas, so as to facilitate the replenishment of the gas inside the extrusion cylinder 12 after use.

[0040] An auxiliary tube 17 is fixedly connected to the upper surface of the protective shell 6, and the top of the auxiliary tube 17 is fixedly connected to the end of the bracket 2 close to the protective shell 6. A detachable dust box 18 is inserted into the upper surface of the bracket 2, and a positioning rod 19 that can move up and down is inserted into the upper surface of the protective shell 6. A push block 20 is fixedly connected to the end of the sleeve 9 close to the driving module 7. The bottom end of the positioning rod 19 passes through the inner top wall of the protective shell 6 and extends to the interior, and is used in conjunction with the push block 20.

[0041] like Figure 2 As shown, the top and bottom of the auxiliary tube 17 are in the shape of a thin tube, and the middle is in the shape of a thick tube, and is connected to the interior of the protective shell 6 and the dust box 18 at the same time. Positioning blocks are threadedly connected at both ends of the upper surface of the dust box 18. By rotating the positioning blocks, the positioning blocks can be disassembled and fixed, which is convenient for later cleaning.

[0042] A reset spring 21 is sleeved on the surface of the positioning rod 19 that penetrates deep into the protective shell 6, the outer surface of the bottom of the auxiliary cylinder 17 is provided with a groove for limiting the top of the positioning rod 19, and an exhaust hole 22 is opened on the outer wall, and a fixing hole 23 is opened on the surface of the top of the positioning rod 19, and is used in conjunction with the exhaust hole 22. A piston ring 24 is provided inside the auxiliary cylinder 17, and a compression spring 25 is provided on the upper surface of the piston ring 24. A second one-way valve 26 is provided at the bottom end of the auxiliary cylinder 17.

[0043] like Figure 2 As shown, when the piston rod 13 moves to the left, the gas inside the protective shell 6 is squeezed to enter the interior of the auxiliary cylinder 17, and the synchronous piston ring 24 drives the compression spring 25 to move upward, and the bottom of the piston ring 24 is filled with gas;

[0044] When the sleeve 9 moves to the right, the push block 20 contacts the bottom of the positioning rod 19. At this time, the positioning rod 19 moves upward under the action of the return spring 21. When the fixing hole 23 is connected with the exhaust hole 22, the piston ring 24 is driven to move downward rapidly by the action of the compression spring 25, and the gas below it is quickly discharged from the exhaust hole 22.

[0045] A rubber layer is provided at the top of the positioning rod 19, close to the outer wall of the auxiliary tube 17, so that the positioning rod 19 fits tightly against the outer wall of the auxiliary tube 17 to prevent air leakage from the exhaust hole 22;

[0046] When the piston ring 24 moves downward rapidly, the end of the feeler rod 5 is just at one side of the bracket 2, and suction is generated under the top plate of the bracket 2, which facilitates the removal of dirt from the contact area between the feeler rod 5 and the docking plate 4, thereby reducing the problem of poor heat dissipation caused by dirt on the connection area after long-term use.

[0047] A filter layer 27 is provided on the side of the dust box 18 near one end of the auxiliary tube 17 and is communicated with the interior of the auxiliary tube 17. A dust suction port is provided on the lower surface of the top plate of the bracket 2 and is communicated with the dust box 18. An air inlet pipe is provided on the side of the protective shell 6 away from the rotating shaft 3, and a third one-way valve is provided near the air inlet pipe. A pulley 28 is fixedly connected to the bottom of the sleeve 9 and is used in conjunction with a slideway provided on the inner bottom wall of the protective shell 6.

[0048] like Figure 6 As shown, the filter layer 27 on the side of the dust box 18 can filter the absorbed dust. When the piston ring 24 moves upward, the airflow generated is relatively slow, and the airflow at the upper end thereof blows to the surface of the filter layer 27, so as to facilitate the cleaning of the dust attached to the surface and make it fall into the inside of the dust box 18.

[0049] The air inlet pipe on one side of the protective shell 6 can be connected to the ventilation duct inside the box body 1. When the piston rod 13 moves to the right, the airflow can enter the interior of the protective shell 6. The pulley 28 at the bottom of the sleeve 9 can provide support when it moves left and right. The bottom of the pulley 28 is arranged inside the slideway, which can avoid the problem of tilting when the sleeve 9 moves.

[0050] When the device is in the initial state; the touch rod 5 and the docking plate 4 are in the closed state, the sleeve 9 is at one end close to the driving module 7, the sulfur hexafluoride gas is stored inside the extrusion cylinder 12, the auxiliary pipe at one end of the extrusion cylinder 12 is connected to the device for storing sulfur hexafluoride gas, and the air inlet pipe is connected to the ventilation duct inside the box 1.

[0051] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0052] In the present invention, the working steps of the device are as follows:

[0053] 1. When in use, the handheld mobile device sends a signal to the signal receiving module. After receiving the signal, the signal receiving module gives instructions to the control module. The control module controls the corresponding drive component to start moving and opens the touch rod 5 and the docking plate 4;

[0054] 2. Start the drive module 7 to reverse, the sleeve 9 moves to the right along the screw 8, the rack rod 10 is meshed and connected with the gear rod 11, and synchronously drives the rotating shaft 3 to rotate in the opposite direction, so that the touch rod 5 is separated from the docking plate 4; when the piston rod 13 moves to the right, the third one-way valve near the air inlet pipe is in a conducting state, and the airflow in the ventilation duct of the box body 1 enters the interior of the protective shell 6, and the gas in the extrusion cylinder 12 is discharged from the air outlet 16 through the branch pipe 14 and the channel inside the docking plate 4. At this time, the first one-way valve 15, point a is in a non-conducting state, and point b is in a conducting state;

[0055] 3. When the push block 20 at the top of the sleeve 9 contacts the bottom of the positioning rod 19, the positioning rod 19 is lifted up to move upward, so that the fixing hole 23 is connected with the exhaust hole 22, and the compression spring 25 drives the piston ring 24 to move downward quickly, and the gas under the piston ring 24 is discharged from the fixing hole 23. At this time, the lower surface of the top plate of the bracket 2 generates suction, and the dust accumulated at the end of the touch rod 5 is quickly sucked into the dust box 18 for storage;

[0056] 4. When the push block 20 moves to the left and away from the positioning rod 19, the positioning rod 19 moves downward by the force of the return spring 21, and the exhaust hole 22 is closed by the top of the positioning rod 19, so as to facilitate the delivery of gas to the inside of the auxiliary cylinder 17. At this time, the second one-way valve 26 is in the conducting state, so that the piston ring 24 drives the compression spring 25 to be in the compressed state again;

[0057] 5. According to the operations of steps 1 and 2 above, when the sleeve 9 moves to the left, it synchronously drives the feeler rod 5 and the docking plate 4 to close the switch. When the piston rod 13 moves to the left, the gas in the sulfur hexafluoride storage device is extracted through the auxiliary pipe and stored in the extrusion cylinder 12 for the next use. At this time, point a is in a conducting state and point b is in a non-conducting state.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote control mechanism for a load switch on the high-voltage side of an American-style transformer, characterized in that: The invention comprises a box body (1), a bracket (2), a rotating shaft (3) and a docking plate (4), wherein the bracket (2) and the docking plate (4) are arranged at the bottom of the box body (1), the bottom of the box body (1) is fixedly connected to a driving assembly, the two ends of the rotating shaft (3) are respectively arranged on the side wall of the box body (1) and one side of the driving assembly, the surface of the rotating shaft (3) is fixedly connected to a touch rod (5), the driving assembly is used to drive the rotating shaft (3) to flip, and the touch rod (5) cooperates with the docking plate (4) to control the opening and closing thereof, and the inner side wall of the docking plate (4) is provided with an air outlet (16); A buffer spring is fixedly connected to the surface of the rotating shaft (3), and the top end of the buffer spring is fixedly connected to the lower surface of the bracket (2); a signal receiving module and a control module are provided on the side of the driving component; an extrusion component is provided at one end of the driving component along the first direction, and is used in conjunction with the docking plate (4) to extinguish the arc; The driving assembly comprises a protective shell (6) fixedly connected to the bottom of the housing (1), a driving module (7) arranged inside the protective shell (6), a screw (8) arranged at the output end of the driving module (7), a sleeve (9) sleeved on the surface of the screw (8), a rack rod (10) fixedly connected to the upper surface of the sleeve (9), and a gear rod (11) arranged on the upper surface of the rack rod (10) and meshingly connected therewith, wherein one end of the gear rod (11) penetrates the inner wall of the protective shell (6) and is detachably connected to the rotating shaft (3); An auxiliary tube (17) is fixedly connected to the upper surface of the protective shell (6); the top of the auxiliary tube (17) is fixedly connected to an end of the bracket (2) close to the protective shell (6); and a detachable dust box (18) is plugged into the upper surface of the bracket (2); A positioning rod (19) that can move up and down is inserted into the upper surface of the protective shell (6); an end of the sleeve (9) close to the drive module (7) is fixedly connected to a push block (20); the bottom end of the positioning rod (19) penetrates the inner top wall of the protective shell (6) and extends to the inside, and is used in conjunction with the push block (20); A return spring (21) is sleeved on the surface of the positioning rod (19) that penetrates into the protective shell (6); a groove for limiting the top of the positioning rod (19) is provided on the outer surface of the bottom of the auxiliary cylinder (17); an exhaust hole (22) is provided on the outer wall; and a fixing hole (23) is provided on the surface of the top of the positioning rod (19) for use in conjunction with the exhaust hole (22); A piston ring (24) is provided inside the auxiliary cylinder (17), a compression spring (25) is provided on the upper surface of the piston ring (24), and a second one-way valve (26) is provided at the bottom end of the auxiliary cylinder (17); A filter layer (27) is provided on the side of the dust collecting box (18) close to one end of the auxiliary tube (17) and is communicated with the interior of the auxiliary tube (17); a dust suction port is provided on the lower surface of the top plate of the bracket (2) and is communicated with the dust collecting box (18).

2. According to claim 1, a remote control mechanism for a load switch on the high voltage side of an American-style transformer is characterized in that: The extrusion assembly comprises an extrusion cylinder (12) fixedly connected to one end of the protective shell (6) along a first direction, and a piston rod (13) fixedly connected to the right end of the sleeve (9) and extending deep into the extrusion cylinder (12) for extruding gas.

3. According to claim 2, a remote control mechanism for a load switch on the high voltage side of an American-style transformer is characterized in that: One end of the extrusion cylinder (12) along the first direction is fixedly connected to a branch pipe (14), one end of the branch pipe (14) is fixedly connected to the surface of the docking plate (4), a first one-way valve (15) is provided inside the extrusion cylinder (12) and the branch pipe (14), a channel communicating with the branch pipe (14) and the air outlet (16) is provided inside the docking plate (4), and an auxiliary pipe is inserted into one end of the extrusion cylinder (12) along the first direction.

4. The remote control mechanism for a load switch on the high voltage side of an American-style transformer according to claim 1 is characterized in that: An air inlet pipe is provided on a side of the protective shell (6) away from the rotating shaft (3), and a third one-way valve is provided at a position close to the air inlet pipe. A pulley (28) is fixedly connected to the bottom of the sleeve (9) and is used in conjunction with a slideway provided on the inner bottom wall of the protective shell (6).

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