KR102518706B1 - Blocker of power distribution line - Google Patents

Abstract

The present invention relates to a device for blocking a section of a jump line track, which comprises: a buffer unit which relieves shock due to changes in tension applied to a jump line included in a jump line track; a blocking unit which is connected to a pair of jump lines electrically connected to the jump line, and blocks the electrical connection of the jump line; a control unit which controls whether the jump line and the blocking unit operate; a coupling maintenance unit which maintains the coupled state of the jump line coupled by the blocking unit; and an interlocking unit which converts a connecting operation of the blocking unit into a locking operation of the coupling maintenance unit when the connecting operation for connecting the jump line is initiated. A device for blocking a section of a distribution line track according to the present invention can improve operational reliability and durability in outdoor environments, and minimize damage to a distribution line due to impact caused by rapid changes in tension of the distribution line.

Description

Section blocker of distribution line {Blocker of power distribution line}

The present invention relates to a section blocking device of a distribution line, and more particularly, is installed in a distribution line included in a distribution line connecting a substation and a customer, and can block the electrical connection state when an abnormality occurs, and the abnormal state that occurs The present invention relates to a section blocking device of a distribution line capable of maintaining a cut-off state until is resolved, and maintaining a connected state without a separate driving device when the cut-off state is released due to the resolution of an abnormal state.

Distribution lines refer to lines that distribute power directly from substations to consumers. In general, since one substation distributes and supplies power to a plurality of consumers, a distribution line is composed of a plurality of distribution lines.

Tension that fluctuates according to expansion and contraction due to temperature change is always applied to the distribution line, and shock due to rapid change in tension is sometimes applied due to strong wind or collision with other objects. When such an impact is strong, an accident in which a distribution line is disconnected may occur.

Conventionally, when a failure occurs in a distribution line, a method of finding a failure point by a method in which a field worker and a substation manager exchange information using a communication means and operate a plurality of blocking devices installed in the substation one by one has been common.

Since this method takes a lot of time and manpower, the recovery work is delayed, so the customer's outage time is also long.

Patent Document 1 (KR10-0956712 B1), which was devised to solve these disadvantages, discloses an automatic switchgear configured to control power cutoff and connection by an operating connecting member according to the operation of a motor, but under conditions installed outdoors There was a high possibility of damage due to penetration of moisture.

In addition, Patent Document 2 (KR10-1713311 B1) discloses a section distribution line blocking device in which the connector is disconnected by the force of the pressure of the compressed inert gas, but the gas cylinder is installed in the housing, so that the gas cylinder is installed in the housing. In the case of leakage, there is a disadvantage in that a fire or explosion may be caused when a spark or the like is generated at the connection part of the connector.

In order to solve the above problems, a distribution line blocking device has been developed, and a blocking device according to the prior art includes a buffer unit for mitigating an impact caused by a change in tension acting on a distribution line included in a distribution line, and a one electrically connected to the distribution line. A blocking unit connected to the pair of jump wires to block the electrical connection of the distribution line, and a control unit controlling whether the distribution line and the blocking unit operate, and the buffer unit is the other end of the wire connected to the end of the distribution line so that each end is electrically insulated. A pair of buffering means connected to each, and covering the pair of buffering means, a through hole through which the wire passes is formed on both sides, and a cover having a container shape with the lower side open, and a lid coupled to the edge of the through hole. Includes a pair of support means.

The background art of the present invention is disclosed in Republic of Korea Patent Registration No. 10-2305640 (Announcement on September 29, 2021, title of invention: section distribution line blocking device).

In the blocking device according to the prior art, since the technical configuration for maintaining the connection state is made by the elastic force acting in the direction of pressing the connector, if the elastic force of the spring that provides the elastic force decreases after a long period of time after the connector is connected, There is a problem in that it is difficult to switch back to the connected state after the blocking operation is performed.

Therefore, there is a need to improve this.

The present invention is installed on a distribution line included in a distribution line connecting a substation and a customer, and when an abnormality occurs, the electrical connection state can be cut off, and the cutoff state can be maintained until the generated abnormal state is resolved. It is an object of the present invention to provide a section blocking device of a distribution line capable of maintaining a connected state without a separate driving device when the blocking state is released.

The present invention, a buffer unit for alleviating the impact according to the change in tension applied to the jump line included in the jump line; a blocking unit that is connected to a pair of jump lines electrically connected to the jump lines to block electrical connection of the jump lines; a control unit controlling whether the jump line and the blocking unit operate; a coupling holding unit for maintaining a coupled state of the jump wire coupled by the blocking unit; and an interlocking unit that converts the connection operation of the blocking unit into a locking operation of the coupling holding unit and transmits the connection operation when the connection operation for connecting the jump line is started.

In addition, the blocking unit of the present invention is installed in the first terminal block installed at the connection part of the jump line, and a rod protruding and retracted in the second terminal block disposed opposite to the first terminal block is connected to supply the working fluid. It is characterized in that it comprises a blocking cylinder for connecting or separating the first terminal block and the second terminal block as the rod protrudes and retracts according to the direction.

In addition, the blocking cylinder of the present invention is installed on a first support extending from the first terminal block, the rod is connected to a second support extending from the second terminal block, and the rod enters the blocking cylinder. A first flow path for supplying a working fluid is connected to one end of the shut-off cylinder to be inserted, and a second flow path for supplying a working fluid so that the rod protrudes from the shut-off cylinder is connected to the interlock release part provided in the first support. characterized by being

In addition, the coupling holding portion of the present invention, the hook member is installed to be able to protrude from the second support; a hook provided on the first support and engaged with the hook member to keep the first terminal block and the second terminal block in close contact with each other; and an elastic member providing an elastic force so that the catching hook maintains a protruding state outside the first support.

The section blocking device of the distribution line according to the present invention improves the reliability of operation and durability against the outdoor environment, can minimize damage to the distribution line due to shock caused by a sudden change in tension of the distribution line, and whether or not the supply of working fluid Accordingly, a blocking unit capable of releasing the connection state of the first terminal block and the second terminal block is provided, and an interlocking unit that releases the blocking operation of the blocking unit after releasing the locked state of the coupling holding unit by changing the supply direction of the working fluid. and an interlocking release unit, the connection state of the first terminal block and the second terminal block can be connected or disconnected by a simple operation of changing the supply direction of the working fluid, even if the supply of the working fluid provided to the blocking unit is stopped. There is an advantage in preventing a malfunction in which the first connection block and the second connection block are separated.

1 is a perspective view illustrating a section blocking device of a distribution line according to an embodiment of the present invention.
2 is an exploded perspective view illustrating a section blocking device of a distribution line according to an embodiment of the present invention.
3 is a diagram showing a buffer means of a section blocking device of a distribution line according to an embodiment of the present invention.
4 is an operating state diagram showing a buffer means of a section blocking device of a distribution line according to an embodiment of the present invention.
5 is a configuration diagram illustrating a blocking unit, a coupling holding unit, and an interlocking unit of a section blocking device of a distribution line according to an embodiment of the present invention.
6 is an operating state diagram illustrating a blocking unit, a coupling holding unit, and an interlocking unit of a section blocking device of a distribution line according to an embodiment of the present invention.
7 is a configuration diagram illustrating an interlock release unit of a section blocking device of a distribution line according to an embodiment of the present invention.

Hereinafter, an embodiment of a section blocking device of a distribution line according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator.

Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a perspective view showing a section blocking device of a distribution line according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a section blocking device of a distribution line according to an embodiment of the present invention, and FIG. It is a drawing showing a buffer means of a section blocking device of a distribution line according to an embodiment of the present invention.

4 is an operating state diagram showing a buffering means of a section blocking device of a distribution line according to an embodiment of the present invention, and FIG. 5 is a blocking unit of the section blocking device of a distribution line according to an embodiment of the present invention; It is a configuration diagram showing a coupling holding unit and an interlocking unit, and FIG. 6 is an operating state diagram showing a blocking unit, a coupling holding unit, and an interlocking unit of a section blocking device of a distribution line according to an embodiment of the present invention, and FIG. 7 is an operating state diagram showing the present invention. It is a configuration diagram showing an interlocking release unit of a section blocking device of a distribution line according to an embodiment of the present invention.

1 to 7, the section difference device of a distribution line according to an embodiment of the present invention may be installed on an arm 71 provided in an electric pole, and includes a buffer unit 10, a blocking unit 30, It includes a control unit 50, a coupling holding unit 36, an interlocking unit 37, and an interlocking unit 38.

The shock absorber 10 of this embodiment alleviates the shock caused by the change in tension applied to the distribution lines 81 and 82, and the blocking part 30 protects the distribution lines 81 and 82 electrically when an error occurs in the distribution lines 81 and 82. Blocking the connection, the control unit 50 controls the operation of the blocking unit 30 and performs a function of transmitting a signal to a manager or a worker in the field.

The buffer unit 10 includes a cover 11, a pair of support means 13 and a pair of buffer means 15 and 15a.

A fixing part 111 fixedly coupled to the arm 71 of the electric pole 70 is formed in the cover 11, a fastening hole 112 is formed in the fixing part 111, and a fastening member is formed in the fastening hole 112. 72 may be fastened so that the cover 11 is fixedly coupled to the arm 71 .

The cover 11 is formed to have a container shape with a lower side open, and through holes 113 (one not shown) are formed on both sides thereof, and fastening holes 114 are formed around the through hole 133.

On both sides of the cover 11, portions of a pair of wires 141 and 142 connected by a pair of support means 13 protrude, respectively, and distribution wires 81 and 82 are formed at ends of the wires 141 and 142. The ends of are respectively connected. Insulators 143 and 144 are installed between the wires 141 and 142 and the distribution wires 81 and 82, respectively, so that the wires 141 and 142 and the distribution wires 81 and 82 are electrically insulated.

Connectors 145 and 146 are installed in the distribution lines 81 and 82, respectively, and ends of the jump wires 321 and 322 are electrically connected to the connectors 145 and 146, respectively.

The buffering means (15, 15a) is installed to be fixedly supported inside the cover (11) in a shape covered by the cover (11). The wires 141 and 142 pass through through holes 113 (one not shown) formed on both sides of the cover 11 and are connected to the shock absorbing means 15 and 15a.

The housing 31 included in the blocking portion 30 to be described below is coupled to the open lower side of the cover 11, and one of the pair of buffer means 15 and 15a, one of the buffer means 15, the main body A spring member 162 elastically coupled to one side of the portion 158, one end coupled to one side of the spring member 162 and the other end coupled to one end of the wires 141 and 142, the wires 141 and 142 It includes a spherical ball member 164 that moves according to the movement of ) and a buffer stopper member 420 coupled to the other side of the body portion 158 to buffer the impact from the ball member 164 and function as a stopper. .

Here, a passage hole 159 through which the wire 141 passes is formed on one side of the body portion 158, and the spring member 162 is coupled to the body portion 158 through the first fixing piece 161, It can be coupled to the spring member 162 through the second fixing piece 163, and these couplings can be made in various ways such as a bolt method or a welding method.

One end of the wire 141 may be connected to the wire connector 141a and the ball member 164, and the ball member 164 is preferably made of a metal material for durability, but is not limited thereto.

A tensile force F in one direction is applied to the wire 141 of this embodiment. At this time, since the tensile force (F) is greater than the elastic force of the spring member 162, the ball member 164 coupled between the spring member 162 and one end of the wire 141 is moved to the right in the drawing, and accordingly the spring The member 162 is tensioned, and when the maximum tensile force F is applied, the ball member 164 is in contact with the buffer stopper member 420, the impact is buffered, and the stopper function does not proceed any further, and the buffer stopper member 420 ) can be pressed and held.

Conversely, when the tensile force F applied to the wire 141 is released, the ball member 164 may be moved to its original position by the elastic restoring force of the spring member 162 that has been tensioned.

In addition, in this embodiment, when the coupling holding unit 36 for maintaining the coupled state of the jump line separated by the blocking unit 30 and the connection operation for connecting the jump line start, the connection operation of the blocking unit 30 is performed. Since it includes an interlocking unit 37 that converts into a locking operation of the engagement holding unit 36 and transmits it, when the blocking unit 30 is driven in the reverse direction after the blocking operation is completed to connect the jump line, the interlocking unit 37 Since the connection state of the jump line is maintained by the operation, even if the separate operation for supplying the working fluid to the blocking unit 30 is released, the jump line can be maintained in the connected state.

The blocking unit 30 of this embodiment is installed in the first terminal block 32 installed at the connection part of the jump line, and appears in the second terminal block 34 disposed opposite to the first terminal block 32. It includes a blocking cylinder 35 connecting or separating the first terminal block 32 and the second terminal block 34 as the rod is connected and the rod protrudes and descends according to the supply direction of the working fluid.

Therefore, when the rod protrudes from the blocking cylinder 35 according to the supply direction of the working fluid, the first terminal block 32 and the second terminal block 34 are separated, the jump lines are separated from each other, and the supply direction of the working fluid is switched. When the rod is inserted into the shut-off cylinder 35, the first terminal block 32 and the second terminal block 34 come into close contact and switch to a state in which the jump wire is connected.

The blocking cylinder 35 of this embodiment is installed on the first support 32a extending from the first terminal block 32, and the rod is connected to the second support 34a extending from the second terminal block 34, A first flow path 35a for supplying a working fluid is connected to one end of the blocking cylinder 35 so that the rod is inserted into the blocking cylinder 35, and the rod protrudes from the blocking cylinder 35 to supply the working fluid. The second flow path 35b is connected to the interlock release unit 38 provided on the first support 32a.

Therefore, when the working fluid is supplied to one end of the blocking cylinder 35 through the first passage 35a, the rod is inserted into the blocking cylinder 35, and the working fluid flows through the second passage 35b to the interlock release unit 38. ) and is supplied to the other end of the blocking cylinder 35, the rod protrudes from the blocking cylinder 35 and separates the first support 32a and the second support 34a, so that the first terminal block 32 and the second terminal As the block 34 is separated, the jump wire is separated and electrically cut off.

The engagement holding part 36 of this embodiment is provided with a hook member 36a protrudingly installed from the second support 34a and the first support 32a, and is engaged with the hook member 36a. A locking hook 36b maintains a state in which the first terminal block 32 and the second terminal block 34 are in close contact, and an elastic force maintains a state in which the hook 36b protrudes outward from the first support 32a. It includes an elastic member (36c) that provides.

The hook member 36a is installed so as to protrude in the lateral direction through the support jaw portion formed by bending both ends of the first support member 32a upward, and the hook is attached to the outer end of the curved extension portion 37a of the interlocking portion 37. Since the member 36a is provided, when the first terminal block 32 descends and comes into close contact with the second terminal block 34, the first terminal block 32 presses the curved extension part 37a so that the curved extension extends outward from the supporting jaw. The portion 37a protrudes.

At this time, the hook member 36a formed at the outer end of the protruding extension portion is engaged with the hook member 36b protruding upward from the first terminal block 32 while being rotated upward by the curved protruding extension portion to engage the first terminal block 32. The terminal block 32 and the second terminal block 34 maintain a closely coupled state.

The interlocking part 37 of this embodiment protrudes in the lateral direction along the hole formed in the supporting jaw part and is formed to be curved in the upward direction, the curved extension part 37a, the supporting shaft 37c provided in the supporting jaw part, , and a sliding hole portion 37b formed in the curved extension portion 37a so that the support shaft 37c is slidably inserted therein.

Therefore, when the first terminal block 32 descends and comes into close contact with the second terminal block 34, the first terminal block 32 presses the inner end of the curved extension portion 37a while pushing the curved extension portion 37a to the supporting jaw. At this time, the support shaft 37c rotates the curved extension 37a upward while moving along the sliding hole 37b, so the outer end of the curved extension 37a rotates upward. The hook member (36a) provided in is rotated toward the upper surface of the first terminal block 32 to form a hooking engagement with the hooking hook (36b).

As described above, when the first terminal block 32 and the second terminal block 34 come into close contact with each other by driving the blocking cylinder 35, the curved extension 37a is supported while being pressed by the first terminal block 32. Since the jaw protrudes outward and rotates upward, the hook member 36a and the hook 36b are engaged, and the hook member 36a and the hook 36a are locked even when the pressing force of the working fluid supplied to the shut-off cylinder 35 is released. Due to the engagement of (36b), the first terminal block 32 and the second terminal block 34 are kept in close contact, and the electrical connection between the jump wire and the distribution line is maintained.

In addition, in the present embodiment, before the jump line blocking operation is started by the operation of the blocking unit 30, the release operation of the engagement holding unit 36 is first performed, and then the blocking operation of the blocking unit 30 proceeds. A release portion 38 is further included.

The interlocking release part 38 of this embodiment is formed on the upper surface of the operating space of the first support 32a in which the hook 36b is installed to be able to protrude from the first terminal block 32, and the second flow path 35b It includes a release hole 38a connected, a bypass hole 38b formed on the lower side of the operating space, and a bypass passage 38c connected from the bypass hole 38b to the other end of the blocking cylinder 35.

Therefore, when the blocking operation is started while the working fluid is supplied through the second flow path 35b, the working fluid supplied along the second flow path 35b flows into the upper part of the working space through the release hole 38a and hooks 36b. ) is retracted toward the inside of the operating space, and when the lowering movement of the engaging hook 36b is completed, the bypass hole 38b is opened and the working fluid flows along the bypass passage 38c to the other end of the blocking cylinder 35. While being supplied to the side, the rod protrudes from the blocking cylinder 35 to perform a blocking operation to separate the first terminal block 32 and the second terminal block 34.

As described above, in this embodiment, the hook member 36a and the locking hook 36b are first released by the supply of the working fluid, and then the rod protrudes from the blocking cylinder 35, and the first terminal block 32 ) and the second terminal block 34 are separated, so that the blocking operation can be performed while preventing interference between technical components.

As a result, it is installed in the distribution line included in the distribution line connecting the substation and the consumer, and when an abnormality occurs, the electrical connection state can be cut off, and the cutoff state can be maintained until the abnormal state is resolved, and the abnormal state is resolved. Therefore, it is possible to provide a section blocking device of a distribution line capable of maintaining a connected state without a separate driving device when the blocking state is released.

Although the present invention has been described with reference to an embodiment shown in the drawings, this is merely exemplary, and those skilled in the art can make various modifications and equivalent other embodiments therefrom. will understand

In addition, although the section blocking device of the distribution line has been described as an example, this is only exemplary, and the blocking device of the present invention can be used for other products other than the section blocking device of the distribution line.

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: buffer part 30: blocking part
32: first terminal block 34: second terminal block
35: blocking cylinder 36: coupling holding unit
37: interlocking unit 38: interlocking unit
50: control unit

Claims (4)

A shock absorber for alleviating the shock caused by the change in tension applied to the jump line included in the jump line;
a blocking unit that is connected to a pair of jump lines electrically connected to the jump lines to block electrical connection of the jump lines;
a control unit controlling whether the jump line and the blocking unit operate;
a coupling holding unit for maintaining a coupled state of the jump wire coupled by the blocking unit; and
And an interlocking unit that converts the connection operation of the blocking unit into a locking operation of the engagement holding unit when a connection operation for connecting the jump line is started,
The blocking part is installed in the first terminal block installed at the connection part of the jump wire, and a rod protruding from the second terminal block disposed opposite to the first terminal block is connected to the rod according to the supply direction of the working fluid. Section blocking device of a jump line, characterized in that it comprises a blocking cylinder for connecting or separating the first terminal block and the second terminal block while appearing and retracting.
delete According to claim 1,
The blocking cylinder is installed on a first supporter extending from the first terminal block, and the rod is connected to a second supporter extending from the second terminal block;
A first flow path for supplying a working fluid is connected to one end of the blocking cylinder so that the rod is inserted into the blocking cylinder,
The section blocking device of the jump line, characterized in that the second flow path for supplying the working fluid so that the rod protrudes from the blocking cylinder is connected to the interlock release part provided in the first support.
The method of claim 3, wherein the coupling holding unit,
a hook member protruding from the second support;
a hook provided on the first support and engaged with the hook member to keep the first terminal block and the second terminal block in close contact with each other; and
Section blocking device of a jump line, characterized in that it comprises an elastic member for providing an elastic force to maintain the state in which the locking hook protrudes outward from the first support.

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