KR200447586Y1 - Endwall Connectors for High Voltage Cable Connections - Google Patents

Abstract

The present invention relates to a connector for high voltage cable connection, and more particularly, to an end wall connector for high voltage cable connection for connecting high voltage cables provided on both sides around a partition or diaphragm.

The high-voltage cable connection endwall connector according to the present invention is a high-voltage cable connection endwall connector provided in a diaphragm partitioning a predetermined inner space and an outer space, the outer wall of which is located in an outer space around the diaphragm. It is formed in the left and right horizontally formed on the upper end of the central vertical portion and the vertical connecting rod is connected to the end and the connecting rod is formed at the upper end, the vertical passage in which the vertical connecting rod is inserted into the hollow cylindrical body of approximately T-shape; Insulating case consisting of a horizontal left and right horizontal portion formed with a horizontal passage communicating with the vertical passage of the central vertical portion, an outer insulating cap inserted into one end of the horizontal passage of the insulating case, and rotatably in the outer through-hole formed in the outer insulating cap Is installed and penetrates through the connecting ring formed on the upper end of the connecting rod, the end of the thread is formed The outer connecting member including an outside lock rod and; The inner cable is coupled to the inner cable located in the inner space around the diaphragm and the inner fastening rod screwed with the outer connecting member, and the inner insulating cap inserted into the horizontal passage of the insulating case through the opening hole formed in the diaphragm and the inner side. It is formed integrally with the insulating cap and made of a bushing portion extending a predetermined distance from the inner surface of the diaphragm and characterized in that it comprises an inner connecting member made of the inner connecting portion main body is installed the inner fastening rod in the longitudinal direction.

Switchgear, High Voltage Cables, Connection, Insulation, Safety, Insulators, Spacing

Description

End wall connector for high voltage cable connection

The present invention relates to a connector for high voltage cable connection, and more particularly, to an end wall connector for high voltage cable connection for connecting high voltage cables provided on both sides around a partition or diaphragm.

An L-type connector is used as an example of a connection connector for connecting high voltage cables located on both sides of a partition or diaphragm. The conventional L-shaped connector is fixed to the outer side of the partition or diaphragm to connect the high voltage cable located inside the diaphragm with the high voltage cable located outside the diaphragm.

However, the conventional high voltage cable connecting connector is a method of connecting a high voltage cable located inside the diaphragm to the high voltage connector through a through hole formed in the diaphragm while the connecting connector is fixed to the outer side of the diaphragm. Therefore, when the high voltage cable located inside the diaphragm is connected using a conventional high voltage connection connector, the high voltage cable located inside the diaphragm penetrates the through hole of the diaphragm, thereby bringing the high voltage cable and the diaphragm close together.

In this case, the high voltage cable is wrapped with an insulating coating, but when the diaphragm is made of a conductive metal, an arc or a short circuit occurs between the diaphragm and the high voltage cable by a current induced in the high voltage cable. Such arcs and short circuits may cause fire or safety accidents.

Conventionally, in order to prevent such an accident, an insulation gas is filled in the inner space of the diaphragm to prevent the occurrence of an arc or a short circuit. For example, an electrical room provided in a building, a factory, or an apartment is provided with a switchgear for receiving high-voltage or extra-high voltage electricity supplied by a power company and distributing it to the load of each customer, and the high-voltage cable entering the outside of the switchgear is connected to a high voltage. It is connected to the high voltage cable inside the switchboard through the connector.

Therefore, in order to safely connect high voltage cables inside and outside the switchgear using a conventional high voltage connection connector, the switchgear must be filled with insulation gas or other gas and insulated, which is expensive. It may lead to. Also, in recent years, it has been found that most of the materials used as insulating gas are harmful to the environment, and thus a new type of high voltage connection connector capable of safely connecting high voltage cables inside and outside the switchboard without using the insulating gas is required.

The present invention has been made in view of such circumstances, and the main purpose of the present invention is to be spaced apart from the diaphragm by the left and right vertical portions of the insulated case of the high voltage connection connector, and the inner fastening rod having the inner cable is spaced a predetermined distance from the diaphragm. It is wrapped with an extended bushing to provide a high-voltage cable connection endwall connector that can prevent fire or safety accidents caused by discharge even when the diaphragm is made of a conductive metal or the insulating gas is not filled in the inner space. will be.

In addition, the present invention is to rotate the outer fastening rod of the outer connection member in one direction in the state in which the inner connection member of the high voltage connection connector is fixed to the diaphragm through the opening hole of the diaphragm, the outer cable is connected to the terminal connecting rod and the inner fastening The present invention provides an end wall connector for connecting high voltage cables, which is very easy to install because the outer connecting member is firmly fixed to the inner connecting member and the diaphragm.

In order to achieve the above object, the high-voltage cable connection endwall connector according to the present invention is a high-voltage cable connection endwall connector provided in a diaphragm partitioning a predetermined internal space and an external space,

Central vertical portion having a vertical connection rod coupled to the end of the outer cable located in the outer space around the diaphragm and having a connection ring formed at the upper end, and a vertical passage in which the terminal connecting rod is inserted into a hollow cylinder having an approximately T-shape. And an insulating case formed on the upper and lower horizontal portions at the upper end of the central vertical portion, the horizontal case having a horizontal passage communicating with the vertical passage of the central vertical portion, and an outer insulating cap inserted into one end of the horizontal passage of the insulating case. An outer connecting member rotatably installed in an outer through hole formed in the outer insulating cap and penetrating through a connecting ring formed at an upper end of the terminal connecting rod, and having an outer fastening rod having a screw thread formed at a distal end thereof;

The inner cable is coupled to the inner cable located in the inner space around the diaphragm and the inner fastening rod screwed with the outer connecting member, and the inner insulating cap inserted into the horizontal passage of the insulating case through the opening hole formed in the diaphragm and the inner side. It is formed integrally with the insulating cap and consists of a bushing portion extending a predetermined distance from the inner surface of the diaphragm and comprises an inner connecting member made of the inner connecting portion main body is installed the inner fastening rod in the longitudinal direction.

In the present invention, the bushing portion is made of insulator and a plurality of wrinkles are formed on the outer circumferential surface thereof.

The inner connection part main body is an insulator having a predetermined length, the center of which is larger than the open hole formed in the diaphragm and is in contact with one side of the diaphragm and the outer flange fixed to the diaphragm by a plurality of bolts and nuts is integrally formed. It is characterized by.

The inner insulation cap and the bushing portion may be made of different insulation materials.

In the high-voltage cable connection end wall connector according to the present invention as described above, when the inner fastening rod of the outer connecting member is rotated in one direction while the inner connecting member is fixed to the diaphragm through the opening hole of the diaphragm, Since the outer cable is not only electrically connected to the inner cable through the terminal connecting rod and the inner fastening rod, the outer connecting member is firmly fixed to the inner connecting member and the diaphragm, so that the installation is very easy.

In addition, the present invention is not only the end connecting rods, the outer fastening rods and the inner fastening rods with the outer cables are wrapped in an insulating case, but are spaced a certain distance from the diaphragm by the left and right vertical portions of the insulating case, and the inner fastenings with the inner cables installed. The rod is enclosed by a bushing portion extended to be spaced apart from the diaphragm, so that the wall or the wall is made of a conductive metal, or even when the insulating gas is not filled in the internal space, it is possible to prevent a fire or safety accident due to discharge.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the high-voltage cable connection endwall connector according to the present invention.

First, Figure 1 is a front view showing a partial cross-sectional view showing a high-voltage cable connection endwall connector according to the present invention, Figure 2 is a cross-sectional view of the high-voltage cable connection endwall connector shown in FIG.

As shown, the end wall connector 1 (hereinafter referred to as 'end wall connector') for connecting the high voltage cable of the present invention has both sides, i.e., the outside, around the partition or diaphragm 2 (hereinafter referred to as the "plate"). The two high voltage cables 6 in the space A and the inner space B are electrically connected to each other.

To this end, the end wall connector 1 of the present invention is largely connected to the outer connecting member 3 for connecting with the outer cable 6a in the outer space A and the inner cable 6b for the inner space B. It consists of the inner connection member 5.

In addition, the end wall connector 1 of the present invention is fixed to the diaphragm 2 of the switchboard or power equipment. To this end, the end wall connector 1 penetrates through the opening hole 29 formed in the diaphragm 2 to connect the high voltage cables 6a and 6b and simultaneously through the opening hole 29 of the diaphragm 2. It is fixed to the diaphragm (2).

In addition, the end wall connector 1 of the present invention is sufficiently spaced apart from the diaphragm 2 two high-voltage cables 6a, 6b located in the outer space (A) and the inner space (B). For example, when the high voltage cables 6a and 6b come close to the diaphragm 2 of the metal material, sparking or electric shock occurs. Therefore, the high voltage cables 6a and 6b are separated by more than 10 cm from the diaphragm 2.

To this end, the outer connecting member 3 of the endwall connector 1 of the present invention is fixed to the outer surface of the diaphragm 2 and protrudes outward, and the inner connecting member 5 is disposed on the inner side of the diaphragm 2. It is fixed and protrudes a certain distance inward. At this time, preferably, a part of the inner connecting member 5 is coupled to the outer connecting member 3 through the opening hole 29 of the diaphragm 2.

On the other hand, the outer cable 6a connected to the outer connecting member 3 and the inner cable 6b connected to the inner connecting member 5 are provided inside the outer connecting member 3 and the inner connecting member 5. It is provided with a connection connecting member for connecting. Preferably, the connection connecting member includes an inner fastening rod 45 and an end fastening rod 45 connected to a terminal connecting rod 13 and an inner cable 6b connected to an end of the outer cable 6a. It consists of the outer fastening rod 43 connected to 45).

Hereinafter, the end wall connector 1 of the present invention including the connection connecting member will be described in more detail.

First, the outer connecting member 3 of the end wall connector 1 is a part located in the outer space A with respect to the diaphragm 2, and is electrically connected to the end of the outer cable 6a. And a vertical connecting rod 13 having a connecting ring 15 formed at an upper end thereof, and a vertical passage 22 into which a vertical connecting rod 13 is inserted as a hollow cylindrical body having an approximately T-shape. And an insulated case formed on the upper and lower horizontal portions at the upper end of the central vertical portion 24 to form a horizontal passage 26 communicating with the vertical passage 22 of the central vertical portion 24. 23 and an outer insulating cap 33 having an outer through hole 31 inserted into one end of the horizontal passage 26 of the insulating case 23 and through which the outer fastening rod 43 penetrates in the longitudinal direction. ) And a connection ring 1 inserted into an outer through hole 31 of the outer insulating cap 33 and formed at an upper end of the termination connecting rod 13. It consists of an outer fastening rod 43 penetrating 5).

Subsequently, the inner connecting member 5 of the end wall connector 1 is located in the inner space B with respect to the diaphragm 2 and passes through the opening hole 29 formed in the diaphragm 2. Insulation case 23 An inner insulation cap 35 inserted into an end of the horizontal passage 26 and a bushing portion formed integrally with the inner insulation cap 35 and extending a predetermined distance from an inner surface of the diaphragm 2. It consists of an inner connecting portion main body 65 made of (55).

The inner connection part body 65 is an insulator having a predetermined length and is formed in a conical shape in which both ends thereof become narrower toward the outside. In addition, the inner fastening rod 45 is installed in the center of the inner connecting portion main body 65 in the longitudinal direction. The inner fastening rod 45 has a connection end 46 to which the inner cable 6b is connected to the outer end thereof, and an inner thread portion 47 for screwing the outer fastening rod 43 to the inner end thereof.

On the other hand, the outer fastening rod 43 is rotatably inserted into the outer through-hole 31 of the outer insulating cap 33, a bolt head 44 is formed at the outer end and the inner fastening rod 45 at the inner end The male screw portion 42 is screwed to the female screw portion 47 of the (). In addition, a ring portion 41 having a predetermined width is formed at the center of the outer fastening rod 43 so that the connection ring 15 of the terminal connecting rod 13 is closely connected.

Hereinafter, the preferred embodiment of the end wall connector 1 will be described in detail.

First, the termination connecting rod 13 is coupled to the end of the outer cable 6a by a rod of a predetermined length. The lower end of the termination connecting rod 13 is formed with an insertion hole 14 through which the outer end of the outer cable 6a, which is peeled off, is inserted and electrically connected, and an upper end of the connecting rod 33 through which the outer fastening rod 33 can penetrate. The ring 15 is integrally formed. The outer cable 6a coupled to the insertion hole 14 is crimped and fixed using a clamp (not shown).

The insulated case 23 is a T-shaped insulator composed of a hollow central vertical portion 24 and a horizontal left and right horizontal portion 25. A vertical passage 22 formed in the central vertical portion 24 has the outer cable ( The terminating rod 13 to which 6a) is connected is inserted. And one side of the horizontal passage 26 formed in the left and right horizontal portion 25, the outer fastening rod 43 penetrating through the connecting ring 15 of the vertical connecting rod 13 installed perpendicular to the central vertical portion 24 The other side is provided with the inner fastening rod 45 connected to the inner cable 6b and provided on the inner connecting portion main body 65.

Preferably, the outer fastening rod 43 is installed on one side of the horizontal left and right portions 25 of the insulating case 23 through the outer insulating cap 33, and the inner fastening rod 43 is the inner connection body 65 It is installed on the other side of the left and right horizontal portions 25 of the insulating case 23 through the inner insulating cap 35 constituting the).

The outer insulation cap 33 is an insulator having a conical shape, and an outer through hole 31 is formed in the center thereof so that the outer fastening rod 43 is rotatably installed in the longitudinal direction, and the left and right horizontal portions at the outer ends thereof. The outer flange 38 in close contact with the end of 25 is integrally formed.

The inner insulation cap 35 has a conical shape symmetrical with the outer insulation cap 33, and the inner fastening rod 45 is installed in the center thereof, and a plate is disposed between the inner insulation cap 35 and the bushing portion 55. The inner flange 39 which contacts the outer side of (2) and the edge part of the left-right horizontal part 25 is formed integrally. The inner flange 39 has a larger diameter than the opening hole 29 of the diaphragm 2, and a fastening hole corresponding to a plurality of through holes formed around the opening hole 29 is formed. A plurality of bolts penetrate the through hole and the fastening hole to fix the inner connecting member 5 to the diaphragm 2.

In the present embodiment, the inner insulation cap 35 and the bushing portion 55 may be made of the same material or may be made of different materials. And the inner fastening rod 45 is installed in the longitudinal direction through the middle of the inner insulating cap 35 and the bushing portion 55. In this case, a separate insulating layer may be further formed on the outer circumferential surface of the inner fastening rod 45 installed in the inner insulating cap 35. In addition, the bushing part 55 is a conical insulator (insulator) having a smaller diameter toward the inside, and a plurality of corrugations 56 are formed on the outer circumferential surface thereof. The corrugation 56 has the effect of extending the surface length of the bushing portion to extend the distance between the inner cable 6b and the diaphragm 2.

Accordingly, the insulating case 23 is provided with a terminal connecting rod 13 on which the outer cable 6a is installed on the central vertical portion 24, and the outer insulating cap 33 has a horizontal passage 26 on the left and right horizontal portions 25. Inserted from the outside of the installation, the outer fastening rods 43 rotatably installed in the center of the push through the connecting ring 15 of the end connecting rod 13, the ring portion 41 of the end connecting rod 13 Is brought into contact with the connecting ring 15. Subsequently, when the outer fastening rod 43 through which the connecting ring 15 penetrates is continuously pushed inward, the inner fastening rod 45 having the front end of the outer fastening rod 43 installed on the inner connecting portion main body 65. ) To the tip of the

At this time, when the outer fastening rod 43 is rotated to one side, the male screw portion 42 formed at the tip of the outer fastening rod 43 is screwed with the female screw portion 47 formed at the end of the inner fastening rod 45 The outer fastening rod 43 is gradually moved to the inside.

Hereinafter, a method of connecting the outer connecting member 3 and the inner connecting member 5 to each other by using the outer fastening rod 43 according to the present invention will be described. As described above, the inner connecting member 5 is fixed to the diaphragm 2, and the outer connecting member 3 is connected to the inner fastening rod 45 of the inner connecting member 5 through the outer fastening rod 43. It is screwed to the tip. In this state, the inner fastening rod 45 is electrically connected to the inner cable 6b, and the outer fastening rod 43 is connected to the outer cable 6a through the terminal connecting rod 13, so that the outer cable ( 6a) and the inner cable 6b are in an electrically connected state.

Subsequently, when the outer fastening rod 43 is continuously rotated, the outer fastening rod 43 moves inward, and the bolt head 44 formed at the outer end of the outer fastening rod 43 is the outer insulation cap 33. In contact with the outer end of the) and rotates the outer fastening rod 43 from this time the outer insulating cap 33 is moved inward. Then, when the outer flange 38 formed at the end of the outer insulating cap 33 is in contact with the ends of the left and right horizontal portions 25 of the insulating case 23, from this time the outer fastening rod 43 is rotated The insulating case 23 moves toward the diaphragm 2. At this time, the insulating case 23 is moved until the inner end of the left and right horizontal portion 25 is in close contact with the inner flange 39 formed on the inner connecting portion main body 65.

In this state, when the outer fastening ball 43 is cooked firmly, the outer connecting member 3 and the inner connecting member 5 are fixed to the diaphragm 2 in a coupled state.

As described above, the end wall connector 1 of the present invention has the inner connecting member 5 penetrated through the opening hole 29 of the diaphragm 2 to be fixed to the diaphragm 2. When the outer fastening rod 43 is rotated in one direction, the outer cable 6a is not only electrically connected to the inner cable 6b through the terminal connecting rod 13 and the inner fastening rod 45 but also the outer connection member. Since 5 is fixed to the inner connecting member 5 and the diaphragm 2, the installation is very easy.

In addition, the end wall connector 1 of the present invention is not only the end connecting rod 13 and the outer fastening rod 43 and the inner fastening rod 45 to which the outer cable 6a is connected are wrapped in the insulating case 23. Instead, the left and right vertical portions 25 are spaced apart from the diaphragm 2 by a predetermined distance, and the inner cable 6b is spaced apart from the diaphragm 2 by the bushing 55 so that the wall surface 2 Even when the conductive metal is formed or when the insulating gas is not filled in the internal space B, a fire or safety accident due to discharge can be prevented.

1 is an exploded front view showing an end wall connector for connecting a high voltage cable according to the present invention;

FIG. 2 is a cross-sectional view of the high-voltage cable connection end wall connector shown in FIG.

Figure 3 is an exploded perspective view showing the bushing in the high-voltage cable connection endwall connector shown in FIG.

4 is an exploded perspective view illustrating a coupling relationship between a terminal connecting rod, an outer fastening rod, an outer insulating cap, and an inner insulating member illustrated in FIG. 1.

*** Explanation of symbols for the main parts of the drawings ***

1: endwall connector 2: diaphragm

3: outer connection member 5: inner connection member

6 (6a, 6b): high-voltage cable 13: termination rod

15: Connection 22: Vertical Path

23: insulated case 24: center vertical part

25: horizontal horizontal portion 26: horizontal passage

29: open hole 31: outer through hole

33: outer insulation cap 35: inner insulation cap

43: outer fastening rod 45: inner fastening rod

55: bushing portion 65: inner connecting body

Claims (3)

In a high voltage cable connection end wall connector provided in a diaphragm partitioning a predetermined internal space and an external space, Central vertical portion formed with a vertical connecting rod coupled to the end of the outer cable located in the outer space around the diaphragm and having a connecting ring formed at the upper end, and a vertical passage in which the vertical connecting rod is inserted as a T-shaped hollow cylinder. And an insulating case formed on the upper and lower horizontal portions at the upper end of the central vertical portion, the horizontal case having a horizontal passage communicating with the vertical passage of the central vertical portion, and an outer insulating cap inserted into one end of the horizontal passage of the insulating case. An outer connecting member rotatably installed in an outer through hole formed in the outer insulating cap and penetrating through a connecting ring formed at an upper end of the terminal connecting rod, and having an outer fastening rod having a screw thread formed at a distal end thereof; The inner cable is coupled to the inner cable located in the inner space around the diaphragm and the inner fastening rod screwed with the outer connecting member, and the inner insulating cap inserted into the horizontal passage of the insulating case through the opening hole formed in the diaphragm and the inner side. An end portion for connecting a high voltage cable, comprising an inner connection member formed integrally with an insulation cap and including a bushing portion extending a predetermined distance from an inner surface of the diaphragm and having an inner connection portion in which the inner fastening rod is installed in a longitudinal direction. Wall Connector. The method of claim 1, End wall connector for a high voltage cable connection, characterized in that a plurality of corrugation is formed on the outer peripheral surface of the bushing portion. The method according to claim 1 or 2, The inner connection part main body is an insulator having a predetermined length, the center of which is larger than the open hole formed in the diaphragm and is in contact with one side of the diaphragm and the outer flange fixed to the diaphragm by a plurality of bolts and nuts is integrally formed. An end wall connector for connecting a high voltage cable.

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