A fast repowering device for air switch

Abstract

The present invention relates to the field of nuclear power plant operation technology, and in particular to an air switch rapid repowering device. The air switch rapid repowering device comprises: a semi-bow-shaped main body, including a first longitudinal beam, a second longitudinal beam and a cross beam; a through hole parallel to the direction of an auxiliary clamping plate is arranged in the second longitudinal beam; the through hole has a convex groove on one side close to the first longitudinal beam; a supporting pressure plate connected to the top of the first longitudinal beam of the semi-bow-shaped main body; an auxiliary clamping plate arranged on the surface of the outer side of the first longitudinal beam; a connecting rod arranged in the through hole; a tension spring, one end of which is fixedly connected in the through hole and the other end is connected to the middle of the connecting rod; a locking unit, which is fixedly connected to the side of the connecting rod; matching the shape of the convex groove; an open circuit breaker groove, which is arranged on the inner side of the first longitudinal beam; and a connecting connector, which is connected to the side of the connecting rod. The present invention can quickly realize repowering, is simple to operate, and ensures reliable power supply of important power sources.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power plant operation, and in particular to an air switch rapid power supply re-energizing device. Background Art

[0002] The DC power supply of the power plant busbar supplies power to the busbar protection and display equipment. When a power outage occurs, rapid power supply to the emergency busbar becomes an important operation for the safe operation of the power plant. At present, the power plant's repowering method is to remove the power supply of the downstream load, connect the downstream busbar, and then provide DC power to the downstream busbar by closing the upstream power supply. This power supply operation method requires professional maintenance personnel to operate, takes a long time to operate, and has a high risk of misoperation. During the time of repowering after power outage, the busbar loses its protective function, and there is a high risk of equipment damage due to equipment failure that cannot be tripped.

[0003] In order to reduce the losses caused by bus power failure and take temporary power supply measures to mitigate the consequences of the accident, the following methods are usually adopted on some busbars.

[0004] For example: Chinese patent publication number CN109273334A discloses a fast recovery power supply device, specifically Figure 1 As shown in the figure, the device can be extended or shortened to drive the clamping device to quickly restore power supply. When the upstream power supply is lost, the device realizes simple and fast re-powering. However, this device has the following limitations. For example, on the circuit breaker of the DC bus, it is necessary to use an insulating device to expose the wire ends, and then clamp them with a clamp. The clamps are exposed to the outside and there is a risk of electric shock. In addition, the connection of this method is not reliable. If someone accidentally touches it during work during the re-powering process, there will be a power interruption, causing further damage to the downstream equipment.

[0005] Therefore, it is necessary to design a fast, safe and reliable power supply device that can not only be operated by professional maintenance professionals, but also meet the repowering requirements of non-electrical professionals, reduce the repowering time, and achieve the purpose of repowering the power-off equipment. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an air switch rapid repowering device, which can quickly realize repowering, is simple to operate, and ensures reliable power supply of important power sources.

[0007] The present invention provides an air switch rapid power supply device, comprising:

[0008] The semi-bow-shaped body comprises a first longitudinal beam, a second longitudinal beam and a cross beam, wherein the first longitudinal beam is parallel to the second longitudinal beam, and the bottom of the first longitudinal beam and the top of the second longitudinal beam are connected to form a whole through the cross beam; a through hole parallel to the direction of the auxiliary clamping plate is arranged in the second longitudinal beam; and a convex groove is arranged on a side of the through hole close to the first longitudinal beam;

[0009] A clamping plate connected to the top of the first longitudinal beam of the semi-bow body;

[0010] an auxiliary clamping plate, arranged on the surface of the outer side of the first longitudinal beam;

[0011] A connecting rod, disposed in the through hole;

[0012] A tension spring, one end of which is fixedly connected in the through hole and the other end of which is connected to the middle part of the connecting rod;

[0013] A locking unit, fixedly connected to the side of the connecting rod, and matching the shape of the convex groove;

[0014] An open circuit breaker slot is provided on the inner side of the first longitudinal beam;

[0015] A connecting connector is connected to the side of the connecting rod.

[0016] Preferably, the clamping plate is connected to the top of the first longitudinal beam of the semi-bow-shaped body through a clamping shaft and a clamping plate spring; the clamping shaft is the center of motion so that the clamping plate cooperates with the auxiliary clamping plate to achieve clamping under the action of the clamping plate spring force.

[0017] Preferably, it also includes a lower anti-slip pad, which is arranged on the upper surface of the beam.

[0018] Preferably, it also includes an upper anti-slip pad, which is arranged on the lower surface of one end of the clamping plate and is opposite to the lower anti-slip pad.

[0019] Preferably, the vertical distance between the auxiliary clamping plate and the clamping plate is 4 to 6 cm.

[0020] Preferably, the center of the connecting rod is a conductor, and the outside is wrapped with an insulating layer.

[0021] Preferably, a handle is provided at one end of the connecting rod, the connecting joint is close to the handle, and the distance between the connecting joint and the handle is 2 to 3 cm.

[0022] Preferably, one end of the locking unit is fixed to the middle of the connecting rod, and the other end is close to the handle.

[0023] Preferably, the length of the tension spring under stress is 1 / 3 of the length of the through hole, and the distance between the fixed end of the tension spring in the through hole and one end of the through hole is 1 / 3 of the length of the through hole.

[0024] Preferably, the air switch circuit breaker groove is a groove inclined downward, and its shape matches that of the air switch.

[0025] Compared with the prior art, the air switch rapid power supply device of the present invention has the following beneficial effects:

[0026] (1) It can be reliably clamped on the air switch to prevent the operator from directly contacting the power supply, which is safe and reliable;

[0027] (2) In the event of a bus DC power failure, it can provide rapid power supply in a short time, and the operation is simple;

[0028] (3) It can prevent the switch from closing and causing bidirectional power supply, effectively avoiding power supply damage caused by erroneous re-powering of temporary power supply;

[0029] (4) It is designed for single-line power supply. When there are multiple power supplies, they can be connected in parallel according to actual conditions, which provides a wide range of usability scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram showing the structure of a fast power recovery device in the prior art;

[0031] Figure 2 A schematic diagram showing the structure of a fast power supply device for an air switch according to an embodiment;

[0032] Figure 3 A schematic structural diagram of an air switch rapid power supply device according to another embodiment;

[0033] Figure 4 A schematic diagram showing a non-working state of the connecting rod;

[0034] Figure 5 Schematic diagram showing the working status of the connecting rod. DETAILED DESCRIPTION

[0035] In order to further understand the present invention, the embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the present invention.

[0036] The embodiment of the present invention discloses a fast power supply device for an air switch, such as Figure 2 As shown, including:

[0037] The semi-bow-shaped main body 1 comprises a first longitudinal beam, a second longitudinal beam and a cross beam, wherein the first longitudinal beam is parallel to the second longitudinal beam, and the bottom of the first longitudinal beam and the top of the second longitudinal beam are connected to form a whole through the cross beam; a through hole parallel to the direction of the auxiliary clamping plate is arranged in the second longitudinal beam; and a convex groove is arranged on a side of the through hole close to the first longitudinal beam;

[0038] A clamping plate 2 connected to the top of the first longitudinal beam of the semi-bow body;

[0039] An auxiliary clamping plate 3, arranged on the surface of the outer side of the first longitudinal beam;

[0040] A connecting rod 4 is arranged in the through hole;

[0041] A tension spring 5, one end of which is fixedly connected in the through hole, and the other end of which is connected to the middle part of the connecting rod 4;

[0042] The locking unit 6 is fixedly connected to the side of the connecting rod and matches the shape of the convex groove;

[0043] An open circuit breaker slot 7 is provided on the inner side of the first longitudinal beam;

[0044] The connecting connector 8 is connected to the side surface of the connecting rod 4 .

[0045] The device of the present invention is suitable for quickly supplying power through a mobile power source or a power source of the same level near the power-lost busbar when the DC power supply of the power station busbar is lost, so as to realize safe and reliable operation of the necessary busbar. After the busbar loses power, the air switch that needs to be powered is disconnected, and an electrician's pen is used to confirm that there is no electricity upstream and downstream of the air switch. Under the action of the clamping plate, the device of the present invention is clamped on the air switch, the lower connecting rod is unlocked, the wire is connected, and the repower switch is turned on to realize power supply.

[0046] According to the present invention, the air switch rapid power supply device is as follows: Figure 3 As shown, including:

[0047] The semi-bow-shaped main body 1 comprises a first longitudinal beam, a second longitudinal beam and a cross beam, wherein the first longitudinal beam is parallel to the second longitudinal beam, and the bottom of the first longitudinal beam and the top of the second longitudinal beam are connected to form a whole through the cross beam; a through hole parallel to the direction of the auxiliary clamping plate is arranged in the second longitudinal beam; and a convex groove is arranged on a side of the through hole close to the first longitudinal beam;

[0048] Preferably, it also includes a lower anti-slip pad 9, which is arranged on the upper surface of the crossbeam.

[0049] The clamping plate 2 is connected to the top of the first longitudinal beam of the semi-bow-shaped main body; the clamping plate 2 cooperates with the cross beam to achieve clamping and fixing of the air switch.

[0050] Preferably, the clamping pressure plate 2 is connected to the top of the first longitudinal beam of the semi-bow-shaped main body 1 through the clamping shaft 10 and the clamping plate spring 11; the clamping shaft is the center of motion so that the clamping pressure plate cooperates with the auxiliary clamping pressure plate under the action of the clamping pressure plate spring force to reliably clamp the power supply device on the air switch, so that the clamping device will not slide under the action of external force.

[0051] Preferably, it further comprises an upper anti-slip pad 12 , which is arranged on the lower surface of one end of the clamping plate and is opposite to the lower anti-slip pad 9 .

[0052] An auxiliary clamping plate 3, arranged on the surface of the outer side of the first longitudinal beam;

[0053] In the present invention, the surface where the first longitudinal beam and the cross beam meet is defined as the inner side of the first weight, and the surface opposite to the surface where the first longitudinal beam and the cross beam meet is defined as the outer side. That is, the cross beam and the auxiliary clamping plate are located on both sides of the first longitudinal beam, respectively.

[0054] The position of the auxiliary clamping plate 3 is ergonomically designed according to the operating length of the thumb and index finger of a human hand. Preferably, the vertical distance between the auxiliary clamping plate 3 and the clamping plate 2 is 4 to 6 cm, more preferably 5 cm.

[0055] The connecting rod 4 serves to connect the emergency power supply and is arranged in the through hole; the connecting plate 4 can slide in the through hole; the center of the connecting rod 4 is a conductor, and the outside is wrapped with an insulating layer; the insulating layer reliably isolates the conductor and realizes the manual direct operation function.

[0056] One end of the connecting rod 4 is used to contact the load connector of the air switch, and the other end is a movable control end. Preferably, the movable control end of the connecting rod 4 is provided with a handle, and the handle is used to rotate or move the connecting rod. The handle is located on the side away from the air switch.

[0057] A tension spring 5, one end of which is fixedly connected in the through hole, and the other end of which is connected to the middle part of the connecting rod 4;

[0058] The locking unit 6 is fixedly connected to the side of the connecting rod 4 and matches the shape of the convex groove;

[0059] One end of the locking unit 6 is fixed to the middle of the connecting rod 4 , and the other end is close to the handle.

[0060] When the locking unit 6 rotates to the convex groove, Figure 4In the position A shown, under the action of the tension spring 5, the connecting rod 4 moves inward, so that the conductor end of the connecting rod 4 is reliably connected to the load connector of the air switch. The length of the tension spring 5 under stress is 1 / 3 of the length of the through hole, and the distance between the fixed end of the tension spring 5 in the through hole and one end of the through hole is 1 / 3 of the length of the through hole.

[0061] When the locking unit 6 rotates to the non-groove position, that is, Figure 4 In the B position shown, the locking unit 6 causes the connecting rod 4 to be stuck outside the second longitudinal beam, thereby preventing the connecting rod 4 from protruding during installation and affecting the installation.

[0062] The through hole is preferably a circular hole, and the connecting rod 4 is preferably a cylinder. Preferably, the diameter of the connecting rod 4 is less than or equal to the load connector of the air switch.

[0063] When the locking unit 6 is at position B, the conductor on the left side of the connecting rod 4 is slightly recessed into the circular hole on the lower side of the semi-bow-shaped main body 1 .

[0064] The air switch circuit breaker groove 7 is provided on the inner side of the first longitudinal beam; preferably, the air switch circuit breaker groove 7 is a groove inclined downward, and its shape matches that of the air switch.

[0065] The connection connector 8 is connected to the side of the connection rod 4. The connection connector is close to the handle, and the distance between the connection connector and the handle is 2 to 3 cm. The connection connector 8 is used to connect to a mobile power source or a power source of the same level near the power-off busbar to quickly restore the busbar power supply.

[0066] Preferably, the clamping plate spring and the tension spring are both made of silicon manganese spring steel, and the upper anti-slip pad and the lower anti-slip pad are made of rubber; the semi-bow-shaped body, the clamping plate, the auxiliary clamping plate and the locking unit are made of PC flame-retardant engineering plastics.

[0067] The air switch rapid repowering device of the present invention is a single-line power supply. If two-line or three-line power supply is used, each line can be clamped in parallel.

[0068] The operating method of the air switch rapid power supply device of the present invention is:

[0069] Step 1: Disconnect the air switch of the power-off equipment and use an electrician's test pen to measure whether there is electricity in the upper and lower parts of the switch.

[0070] Step 2: Hold the connecting rod 4 by hand, connect one end of the repower supply to the connection connector of the connecting rod 4, and connect the other end of the power supply to the connecting rod 4 when the repower switch is turned off.

[0071] Step 3: Rotate the connecting rod 4 to the B position (non-working state) to put the locking unit 6 in the locking position.

[0072] Step 4: Press the clamping plate 2 under the action of the auxiliary clamping plate 3 to rotate the clamping plate along the clamping shaft 10, open and form an opening larger than the air switch, and fix it to the upper part of the power-off air switch. The fast repowering device is firmly installed under the action of the clamping plate spring 11; on the other hand, the lower anti-skid pad 9 and the upper anti-skid pad 12 also have the function of anti-skid fixed installation.

[0073] Step 5: Confirm that the air switch handle inside the air switch circuit breaker slot 7 is working properly, that is, the air switch is in the disconnected position; if the air switch is closed, the switch handle is located outside the air switch circuit breaker slot 7 and the installation operation cannot be performed.

[0074] Step 6: Rotate the connecting rod 4 to position A. Under the action of the tension spring 5, the exposed conductor on the left side of the connecting rod 4 is reliably connected to the repowering load. Figure 5 shown.

[0075] Step 7: Turn on the repower supply switch to realize power supply.

[0076] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0077] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fast repowering device for an air switch, characterized in that: include: The semi-bow-shaped body comprises a first longitudinal beam, a second longitudinal beam and a cross beam, wherein the first longitudinal beam is parallel to the second longitudinal beam, and the bottom of the first longitudinal beam and the top of the second longitudinal beam are connected to form a whole through the cross beam; a through hole parallel to the direction of the auxiliary clamping plate is arranged in the second longitudinal beam; and a convex groove is arranged on a side of the through hole close to the first longitudinal beam; A clamping plate connected to the top of the first longitudinal beam of the semi-bow body; an auxiliary clamping plate, arranged on the surface of the outer side of the first longitudinal beam; A connecting rod, disposed in the through hole; A tension spring, one end of which is fixedly connected in the through hole and the other end of which is connected to the middle part of the connecting rod; A locking unit, fixedly connected to the side of the connecting rod, and matching the shape of the convex groove; An open circuit breaker slot is provided on the inner side of the first longitudinal beam; A connecting connector connected to a side of the connecting rod; The center of the connecting rod is a conductor, and the outside is wrapped with an insulating layer; A handle is provided at one end of the connecting rod, and the connecting joint is close to the handle, and the distance between the connecting joint and the handle is 2 to 3 cm.

2. The air switch rapid repowering device according to claim 1, characterized in that: The clamping plate is connected to the top of the first longitudinal beam of the semi-bow-shaped body through a clamping shaft and a clamping plate spring; the clamping shaft is the center of motion so that the clamping plate cooperates with the auxiliary clamping plate to achieve clamping under the action of the clamping plate spring force.

3. The air switch rapid repowering device according to claim 1, characterized in that: It also includes a lower anti-skid pad, which is arranged on the upper surface of the crossbeam.

4. The air switch rapid repowering device according to claim 3, characterized in that: It also includes an upper anti-skid pad, which is arranged on the lower surface of one end of the clamping plate and is opposite to the lower anti-skid pad.

5. The air switch rapid repowering device according to claim 1, characterized in that: The vertical distance between the auxiliary clamping plate and the clamping plate is 4 to 6 cm.

6. The air switch rapid repowering device according to claim 1, characterized in that: One end of the locking unit is fixed to the middle of the connecting rod, and the other end is close to the handle.

7. The air switch rapid repowering device according to claim 1, characterized in that: The length of the tension spring under stress is 1 / 3 of the length of the through hole, and the distance between the fixed end of the tension spring in the through hole and one end of the through hole is 1 / 3 of the length of the through hole.

8. The air switch rapid repowering device according to claim 1, characterized in that: The air switch circuit breaker groove is a groove inclined downward, and its shape matches that of the air switch.

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