CN111463743A - Device and method for connecting pole of pole-mounted switch with cable head - Google Patents
Device and method for connecting pole of pole-mounted switch with cable head Download PDFInfo
- Publication number
- CN111463743A CN111463743A CN202010409157.5A CN202010409157A CN111463743A CN 111463743 A CN111463743 A CN 111463743A CN 202010409157 A CN202010409157 A CN 202010409157A CN 111463743 A CN111463743 A CN 111463743A
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- China
- Prior art keywords
- pole
- cable head
- insulating
- post
- connecting piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 18
- 239000004020 conductor Substances 0.000 claims abstract description 55
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052802 copper Inorganic materials 0.000 claims abstract description 43
- 239000010949 copper Substances 0.000 claims abstract description 43
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 238000002788 crimping Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/06—Cable terminating boxes, frames or other structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model provides a post switch utmost point post and cable head's connecting device, including the conductor connecting piece, insulating housing and insulating lock sleeve, the upper portion of conductor connecting piece is seted up one with the fixed cable head fixed slot of cable head crimping, a utmost point post copper pole spread groove has been seted up to the lower part of conductor connecting piece, fixed mounting has the finger spring of touching on the inner wall of utmost point post copper pole spread groove, the inside wall that touches the finger spring closely cup joints on the lateral wall of utmost point post copper pole, insulating housing injection moulding is on the surface of conductor connecting piece and cable head upper end insulating layer, be connected through insulating lock sleeve between insulating housing and the utmost point post shell that is equipped with utmost point post copper pole. The cable connector can ensure the tightness between the cable head and the conductor connector, prevent the cable head and the conductor connector from swinging and pulling due to severe weather, environment and other reasons to cause poor contact and even fall off, has quick and simple installation, and reduces the risk of high-altitude operation.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a device and a method for connecting a pole of a pole-mounted switch and a cable head.
Background
Outdoor pole-mounted vacuum circuit breakers (pole-mounted switches for short) are commonly used in rural and urban power grids for breaking and combining load current, overload current and short-circuit current, measuring line loss and protecting short-circuit grounding faults. The pole column with the high-voltage vacuum arc-extinguishing chamber inside is a core element of the pole-mounted switch, and the pole column is matched with a related operating mechanism to complete the function of the pole-mounted switch.
The utility model discloses a chinese utility model patent with an authorization bulletin number of CN 204067177U, which discloses a pole for a high-voltage vacuum switch with a cable connection sleeve, comprising a vacuum arc-extinguishing chamber, an epoxy resin shell, a conductive flexible connection, a moving contact, a static contact, an insulating pull rod, an upper pole connection sleeve, a lower pole connection sleeve and a waterproof sealing element, wherein the upper pole connection sleeve is arranged at the upper end of the epoxy resin shell, and the upper end of the vacuum arc-extinguishing chamber is connected with an upper pole connection sleeve conductor; the lower end of the vacuum arc extinguish chamber is connected with the lower terminal wiring sleeve conductor of the pole through a conductive flexible connection, and the waterproof sealing element is sealed at the bottom of the epoxy resin shell and fixed with the lower end of the insulating pull rod. The utility model discloses a utmost point post, though can cooperate the use of the tangible formula silicon rubber cable head of current totally insulated seal, accomplish that the electrically conductive position is totally insulated, totally enclosed, can satisfy special occasion and use. However, because the wiring sleeve on the utmost point post and the wiring sleeve under the utmost point post are all located on the utmost point post shell, when the installation, hang up whole high-voltage vacuum switch on the installing support earlier, then correspond grafting with cable head and wiring sleeve conductor, though the installation is simple and easy convenient, this kind of mode that cable head and wiring sleeve directly pegged graft, under bad weather or environment, the cable head appears becoming flexible easily with the wiring sleeve, the scheduling problem drops, is difficult to guarantee the fastening nature and the leakproofness between cable head and the wiring sleeve conductor.
Disclosure of Invention
The invention provides a device and a method for connecting a pole of a pole-mounted switch and a cable head, which aim to solve the problems that the existing connection mode of the cable head and a wiring sleeve is easy to loosen and fall off, and the tightness and the sealing performance between the cable head and a conductor of the wiring sleeve are difficult to ensure.
The invention adopts the following technical scheme:
the utility model provides a post switch utmost point post and cable head's connecting device, includes conductor connecting piece, insulating housing and insulating lock sleeve, the upper portion of conductor connecting piece is seted up one and is fixed with the cable head crimping cable head fixed slot, a utmost point post copper pole spread groove has been seted up to the lower part of conductor connecting piece, fixed mounting has the finger spring of touching on the inner wall of utmost point post copper pole spread groove, touch the inside wall that indicates the spring and closely cup joint on the lateral wall of utmost point post copper pole, insulating housing injection moulding is in on the surface of conductor connecting piece and the cable head upper end insulating layer, pass through between insulating housing and the utmost point post shell that is equipped with utmost point post copper pole insulating lock sleeve connects.
Furthermore, the upper part of the insulating shell is provided with an extension part, and the center of the extension part is provided with an expanding groove which is coated on the insulating layer at the upper end of the cable head.
Furthermore, a flange is arranged on the outer side wall of the bottom of the insulating shell, and a step surface correspondingly supported on the flange is arranged inside the insulating locking sleeve.
Furthermore, the outer side wall of the pole shell is provided with an external thread, and the lower part of the insulating locking sleeve is provided with an internal thread correspondingly connected with the external thread.
Further, a piece of anti-loose silica gel is arranged between the bottom of the insulating shell and the top end of the pole column shell.
Furthermore, an annular sealing groove is formed in the outer side wall, corresponding to the top end of the insulating locking sleeve, of the insulating shell, and an annular sealing ring is installed on the annular sealing groove.
The invention also provides a method for connecting the pole of the pole switch with the cable head, which comprises the following steps:
(1) peeling off a prepared cable wire on the ground to form a cable head, and correspondingly pressing the cable head in a cable head fixing groove of the conductor connecting piece;
(2) then, injecting an insulating shell outside the conductor connecting piece which is connected with the cable head in the step (2) in a pressing mode, and enabling the upper portion of the insulating shell to cover a part of cable conductor insulating layer at the upper end of the cable head;
(3) then, the contact finger spring is extruded and fixed in a connecting groove of a pole copper rod of the conductor connecting piece, and an insulating locking sleeve is sleeved on the insulating shell;
(4) then, wiring the cable in the step (3) to enable one end with the conductor connecting piece to be positioned beside the pole top switch mounting bracket;
(5) hoisting the pole-mounted switch to the mounting bracket, and tightly sleeving the contact finger spring at the bottom of the conductor connecting piece on the pole copper rod;
(6) and finally, screwing the insulating locking sleeve to enable the insulating locking sleeve to be tightly connected with the pole shell.
Further, the bottom surface of the cable head in the step (1) is abutted to the bottom wall of the cable head fixing groove, and the top surface of the pole copper rod in the step (5) is abutted to the top wall of the pole copper rod connecting groove.
Further, before the step (5), the method further comprises sleeving a piece of anti-loose silica gel on the pole copper rod.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. according to the connecting device, the cable head fixing groove is formed in the upper portion of the conductor connecting piece, the cable head is pressed in the cable head fixing groove, the insulating shell is formed in the outer portion of the conductor connecting piece and a part of cable conductor insulating layer at the upper end of the cable head in an injection molding mode, the insulating shell can guarantee the tightness and the sealing performance between the cable head and the conductor connecting piece, and the phenomenon that the cable head and the conductor connecting piece are poor in contact and even fall off due to looseness caused by expansion caused by heat and contraction caused by cold and the like can be prevented.
2. According to the connecting device, the lower part of the conductor connecting piece is provided with the pole copper rod connecting groove, the contact finger spring is fixed in the pole copper rod connecting groove, and the pole copper rod is tightly held by the contact finger spring, so that the connecting tightness of the pole copper rod and the conductor connecting piece can be ensured, the contact area between the pole copper rod and the conductor connecting piece is increased, and the electric conductivity between the pole copper rod and the conductor connecting piece is ensured. In addition, the bottom of the insulating shell is connected with the shell of the column switch through the insulating fastening sleeve, so that the acting force between the connecting device and the switch pole is concentrated on the insulating fastening sleeve, and the acting force between the pole copper rod and the contact finger spring is greatly reduced.
3. The connecting method of the connecting device comprises the steps of firstly pressing a cable head and a conductor connecting piece on the ground, injecting an insulating shell, then wiring a cable, finally hoisting the pole-mounted switch to the mounting bracket, enabling a contact finger spring at the bottom of the conductor connecting piece to be tightly sleeved on a pole copper rod and locking the insulating fastening sleeve. Compared with the traditional installation method of copper bar butt joint, the connection method is quick and simple, is convenient for field operation, greatly reduces the risk of high-altitude operation, and has firm and reliable connection and good sealing performance.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of the cable head of fig. 1 without the cable head.
Fig. 3 is a schematic view of the invention mounted on a switch post copper rod.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.
A connecting device of a pole and a cable head of a pole-mounted switch, referring to fig. 1 to 3, comprises a conductor connecting piece 10, an insulating shell 20 and an insulating locking sleeve 30. The conductor connecting piece 10 preferably adopts a copper conductor, a cable head fixing groove 11 which is fixedly connected with the cable head 1 in a compression joint mode is formed in the upper portion of the conductor connecting piece 10, and the cable head 1 is pressed in the high cable head fixing groove 11 through a compression joint tool. A post copper rod connecting groove 12 is formed in the lower portion of the conductor connecting piece 10, a contact finger spring 13 is fixedly mounted on the inner wall of the post copper rod connecting groove 12, and the inner side wall of the contact finger spring 13 is tightly sleeved on the outer side wall of the post copper rod 2. The number of the finger springs 13 shown in the present embodiment is three, but may be one, two, or more than three.
Referring to fig. 2 and 3, the insulation housing 20 is injection molded on the outer surface of the conductor connector 10 and the insulation layer at the upper end of the cable head 1, an extension portion 21 is disposed at the upper portion of the insulation housing 20, and a reaming groove 210 covering the insulation layer at the upper end of the cable head 1 is disposed at the center of the extension portion 21.
Referring to fig. 2, the insulating housing 20 is connected to the pole housing 3 provided with the pole copper rod 2 by the insulating locking sleeve 30. The outer side wall of the bottom of the insulating shell 20 is provided with a flange 22, and the inside of the insulating locking sleeve 30 is provided with a step surface 31 correspondingly supported on the flange 22. The outer side wall of the pole shell 3 is provided with an external thread, and the lower part of the insulating locking sleeve 30 is provided with an internal thread 32 correspondingly connected with the external thread. And a locking silica gel 40 is arranged between the bottom of the insulating shell 30 and the top end of the pole housing 3.
Referring to fig. 2, an annular sealing groove 23 is formed in an outer side wall of the insulating housing 20 corresponding to the top end of the insulating locking sleeve 30, and an annular sealing ring 24 is installed on the annular sealing groove 23 to ensure the sealing property between the insulating fastening sleeve 30 and the insulating housing 20.
The connection method of the connection device of the pole-mounted switch and the cable head comprises the following steps:
(1) peeling off a prepared cable on the ground to form a cable head, and correspondingly pressing the cable head 1 in a cable head fixing groove 11 of a conductor connecting piece 10;
(2) then, injecting an insulating shell outside the conductor connecting piece which is connected with the cable head in the step (2) in a pressing mode, and enabling the upper portion of the insulating shell to cover a part of cable conductor insulating layer at the upper end of the cable head;
(3) then, the contact finger spring is extruded and fixed in a connecting groove of a pole copper rod of the conductor connecting piece, and an insulating locking sleeve is sleeved on the insulating shell;
(4) then, wiring the cable in the step (3) to enable one end with the conductor connecting piece to be positioned beside the pole top switch mounting bracket;
(5) hoisting the pole-mounted switch to the mounting bracket, and tightly sleeving the contact finger spring at the bottom of the conductor connecting piece on the pole copper rod;
(6) and finally, screwing the insulating locking sleeve to enable the insulating locking sleeve to be tightly connected with the pole shell.
The bottom surface of the cable head 1 in the step (1) can be abutted to the bottom wall of the cable head fixing groove 11, and the top surface of the post copper rod 2 in the step (5) is abutted to the top wall of the post copper rod connecting groove 12, so that the contact area between the cable head 1 and the post copper rod 2 and the conductor connecting piece 10 is increased.
Before the step (5), the method further comprises sleeving a piece of anti-loose silica gel on the pole copper rod.
The cable head refers to a bare conductive metal part of a cable after peeling.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (9)
1. The utility model provides a device for connecting post switch utmost point post and cable head which characterized in that: including conductor connecting piece, insulating housing and insulating lock sleeve, a cable head fixed slot fixed with cable head crimping is seted up on the upper portion of conductor connecting piece, a utmost point post copper pole spread groove has been seted up to the lower part of conductor connecting piece, fixed mounting has the touch finger spring on the inner wall of utmost point post copper pole spread groove, touch the inside wall that indicates the spring and closely cup joint on the lateral wall of utmost point post copper pole, insulating housing injection moulding is in on the surface of conductor connecting piece and the cable head upper end insulating layer, pass through between insulating housing and the utmost point post shell that is equipped with utmost point post copper pole insulating lock sleeve connects.
2. The device of claim 1, wherein the post-on-post switch post is connected to the cable head by: the upper part of the insulating shell is provided with an extension part, and the center of the extension part is provided with a hole expanding groove coated on an insulating layer at the upper end of the cable head.
3. The device of claim 1, wherein the post-on-post switch post is connected to the cable head by: the outer side wall of the bottom of the insulating shell is provided with a flange, and the inside of the insulating locking sleeve is provided with a step surface correspondingly supported on the flange.
4. The device of claim 3, wherein the post-on-post switch post is connected to the cable head by: the outer side wall of the pole shell is provided with an external thread, and the lower part of the insulating locking sleeve is provided with an internal thread correspondingly connected with the external thread.
5. The device of claim 1, wherein the post-on-post switch post is connected to the cable head by: and a locking silica gel is also arranged between the bottom of the insulating shell and the top end of the pole shell.
6. The device of claim 1, wherein the post-on-post switch post is connected to the cable head by: the insulating shell and the outer side wall corresponding to the top end of the insulating locking sleeve are provided with an annular sealing groove, and an annular sealing ring is installed on the annular sealing groove.
7. A method for connecting a pole of a pole-mounted switch with a cable head, comprising the device for connecting a pole of a pole-mounted switch with a cable head as claimed in claim 1, characterized by comprising the following steps:
(1) peeling off a prepared cable wire on the ground to form a cable head, and correspondingly pressing the cable head in a cable head fixing groove of the conductor connecting piece;
(2) then, injecting an insulating shell outside the conductor connecting piece which is connected with the cable head in the step (2) in a pressing mode, and enabling the upper portion of the insulating shell to cover a part of cable conductor insulating layer at the upper end of the cable head;
(3) then, the contact finger spring is extruded and fixed in a connecting groove of a pole copper rod of the conductor connecting piece, and an insulating locking sleeve is sleeved on the insulating shell;
(4) then, wiring the cable in the step (3) to enable one end with the conductor connecting piece to be positioned beside the pole top switch mounting bracket;
(5) hoisting the pole-mounted switch to the mounting bracket, and tightly sleeving the contact finger spring at the bottom of the conductor connecting piece on the pole copper rod;
(6) and finally, screwing the insulating locking sleeve to enable the insulating locking sleeve to be tightly connected with the pole shell.
8. The method for connecting a pole of a pole-mounted switch with a cable head of claim 7, wherein the method comprises the following steps: and (3) abutting the bottom surface of the cable head in the step (1) against the bottom wall of the cable head fixing groove, and abutting the top surface of the pole copper rod in the step (5) against the top wall of the pole copper rod connecting groove.
9. The method for connecting a pole of a pole-mounted switch with a cable head of claim 7, wherein the method comprises the following steps: before the step (5), the method further comprises sleeving a piece of anti-loose silica gel on the pole copper rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409157.5A CN111463743A (en) | 2020-05-14 | 2020-05-14 | Device and method for connecting pole of pole-mounted switch with cable head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409157.5A CN111463743A (en) | 2020-05-14 | 2020-05-14 | Device and method for connecting pole of pole-mounted switch with cable head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111463743A true CN111463743A (en) | 2020-07-28 |
Family
ID=71680339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010409157.5A Pending CN111463743A (en) | 2020-05-14 | 2020-05-14 | Device and method for connecting pole of pole-mounted switch with cable head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111463743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113270845A (en) * | 2021-06-24 | 2021-08-17 | 中国工程物理研究院流体物理研究所 | Sealing device for high-voltage cable core wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210430893U (en) * | 2019-11-04 | 2020-04-28 | 福建阳光大禾电子科技有限公司 | Cable connection sleeve and solid-sealed polar pole using same |
| CN211859558U (en) * | 2020-05-14 | 2020-11-03 | 福建省宏科电力科技有限公司 | Connecting device of pole and cable head of pole-mounted switch |
-
2020
- 2020-05-14 CN CN202010409157.5A patent/CN111463743A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210430893U (en) * | 2019-11-04 | 2020-04-28 | 福建阳光大禾电子科技有限公司 | Cable connection sleeve and solid-sealed polar pole using same |
| CN211859558U (en) * | 2020-05-14 | 2020-11-03 | 福建省宏科电力科技有限公司 | Connecting device of pole and cable head of pole-mounted switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113270845A (en) * | 2021-06-24 | 2021-08-17 | 中国工程物理研究院流体物理研究所 | Sealing device for high-voltage cable core wire |
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