CN211859157U - High-voltage protection switch - Google Patents
High-voltage protection switch Download PDFInfo
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- CN211859157U CN211859157U CN202020698775.1U CN202020698775U CN211859157U CN 211859157 U CN211859157 U CN 211859157U CN 202020698775 U CN202020698775 U CN 202020698775U CN 211859157 U CN211859157 U CN 211859157U
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- fuse
- box body
- voltage
- voltage protection
- protection switch
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Abstract
The utility model discloses a high-voltage protection switch, which comprises a box body, wherein insulating oil is arranged in the box body; a load switch having a charged body immersed in the insulating oil; the fuses are connected with the load switch and arranged in the box body; the first high-voltage bushing and the second high-voltage bushing are in one-to-one correspondence with the fuses; the first high voltage bushing is arranged outside the box body; the second high voltage bushing is arranged outside the box body; a lead is arranged in the first high-voltage sleeve, one end of the lead is connected with a transformer, and the other end of the lead is sequentially connected with the load switch and the fuse; and through the second high voltage bushing corresponding to the fuse. Through insulating oil, load switch, fuse to realize a simple structure, small and exquisite and high-voltage protection switch of security.
Description
Technical Field
The utility model relates to a power equipment's technical field especially relates to a high-voltage protection switch.
Background
In the operation process of the box-type substation, in order to further protect the substation, a high-voltage switch is generally configured in the prior art for fault protection. In some transformer substations, the high-voltage switch adopts a mode that all charged bodies are exposed in the air, so that the transformer substation is low in safety; in other substations, the high-voltage protection switch adopts a box body centralized deployment mode, but the high-voltage protection switch is generally large in appearance, so that the box-type substation is large in size.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a high-voltage protection switch, its small in size and security are high.
The high-voltage protection switch comprises:
the box body is internally provided with insulating oil; a load switch having a charged body immersed in the insulating oil.
The fuses are connected with the load switch and arranged in the box body; the first high-voltage bushings are arranged outside the box body and correspond to the fuses one by one; the second high-voltage bushings are arranged outside the box body and correspond to the fuses one by one; a lead is arranged in the first high-voltage sleeve, one end of the lead is connected with a transformer, and the other end of the lead is sequentially connected with the load switch and the fuse; and through the second high voltage bushing corresponding to the fuse.
According to the utility model discloses an above-mentioned embodiment has following beneficial effect at least: the electrified body of the load switch is immersed in the insulating oil to protect the equipment from the influence of electric arcs, so that the volume of the box body can be designed to be small enough under the condition of ensuring safety. And the load switch and the fuse are arranged in the box body in a centralized manner, so that the high-voltage protection switch has the function of an oil switch, and the equipment can be stopped when the equipment fails. Therefore, the high-voltage protection switch with small size and high safety is realized.
According to some embodiments of the invention, the box has a right angle concave surface and/or an obtuse angle concave surface. Through setting up right angle concave surface and/or obtuse angle concave surface on with the box for the volume in the box diminishes, can set up first high-tension bushing or second high-tension bushing on the concave surface simultaneously, reduces the volume in space, thereby further reduces high-tension switch's volume.
According to some embodiments of the invention, an oil level indicator is further provided in the tank. Through the counting on the oil level gauge, whether the electrified part of the load switch is immersed by the insulating oil can be judged, so that the use safety is improved.
According to some embodiments of the invention, the box comprises a top cover, the top cover being provided with a pressure relief valve. The lead generates heat during the operation of the equipment, so that a part of insulating oil is liquefied, and the pressure in the oil tank is rapidly increased. Through setting up pressure release valve, can release pressure to the protection oil tank does not warp or explode, thereby promotes high-pressure protection switch's security.
According to some embodiments of the utility model, load switch is connected with electric actuator, through electric actuator is right load switch carries out remote control. Through remote control's mode, can avoid manual operation, promote the efficiency of maintaining and the security of maintaining.
According to some embodiments of the invention, the fuse is a full range fuse. Through setting up the full range fuse, can realize the overload and the short-circuit protection function of electric current for high-voltage protection switch simple structure and security are higher.
According to the utility model discloses a some embodiments, high voltage protection switch still includes the fuse mount pad, the fuse mount pad with box one side is connected, the fuse is placed in the fuse mount pad. Through the mode of fuse mount pad for the installation and the maintenance of fuse are more convenient.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a front sectional view of a high voltage protection switch according to an embodiment of the present invention;
fig. 2 is an electrical schematic diagram of a high-voltage protection switch according to an embodiment of the present invention;
fig. 3 is a top view of the high voltage protection switch according to the embodiment of the present invention.
Reference numerals:
a box body 110, a right-angled concave surface 111, an obtuse-angled concave surface 112,
A fuse 120,
A load switch 130,
A first high voltage bushing 140,
A second high voltage bushing 150,
An oil level gauge 160,
A fuse mounting seat 170,
A lead 180, a first lead 181, a second lead 182, a third lead 183,
A pressure relief valve 310.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
A high voltage protection switch according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1, the high voltage protection switch includes: a tank body 110, wherein insulating oil is arranged in the tank body 110; the load switch 130, the load switch 130 has a charged body, and the charged body is immersed in insulating oil.
The fuses 120 are connected with the load switch 130, and the fuses 120 are arranged in the box body 110; a plurality of first high voltage bushings 140, the first high voltage bushings 140 being disposed outside the box body 110, the first high voltage bushings 140 corresponding to the fuses 120 one to one; a plurality of second high voltage bushings 150, the second high voltage bushings 150 being disposed outside the case 110, the second high voltage bushings corresponding to the fuses 120 one to one; a lead wire 180 is arranged in the first high-voltage bushing 140, one end of the lead wire 180 is connected with a transformer, and the other end of the lead wire 180 is sequentially connected with the load switch 130 and the fuse 120; and passes through the second high voltage bushing 150 corresponding to the fuse 120.
It should be understood that the load switch is installed in the case 110 with insulating oil as an insulating and arc extinguishing medium.
It should be understood that the insulating oil may be transformer oil, which can be used as a coolant and can improve the insulating strength to improve safety.
It should be understood that the load opening tube 130 and the fuse 120 cooperate to perform the functions of turning on and off the load and short-circuiting the current, instead of using an oil switch.
According to the utility model discloses an above-mentioned embodiment has following beneficial effect at least: the charged body passing through the load switch 130 is immersed in insulating oil to protect the equipment from the arc, so that the volume of the case 110 can be designed to be small enough in case of safety. And the load switch 130 and the fuse 120 are centrally arranged in the box body 110, so that the high-voltage protection switch has the function of an oil switch, and can stop the operation of equipment when the equipment fails. Therefore, the high-voltage protection switch with small size and high safety is realized.
It should be understood that in other embodiments, the fuse 120 may select a remotely monitorable fuse, and the current state of the fuse may be determined by an action signal output from the fuse to simplify maintenance.
In some embodiments, as shown in FIG. 1, the housing 110 has a right angle concavity 111 and/or an obtuse angle concavity 112. By providing right-angled concave surface 111 and/or obtuse-angled concave surface 112 on box 110, the volume in box 110 is reduced, and at the same time, first high-voltage bushing 140 or second high-voltage bushing 150 may be provided on the concave surface, so as to reduce the volume of the space, and further reduce the volume of the high-voltage switch.
It should be appreciated that in some embodiments, the housing 110 is provided with only an obtuse-angle concavity, with a first high-voltage bushing and a second high-voltage bushing on either side of the obtuse-angle concavity. In other embodiments, only a right angle concave surface of the case 110 is provided. In other embodiments, the opposite sides of the case 110 are respectively provided with an obtuse-angle concave surface and a right-angle concave surface.
In some embodiments, an oil level gauge 160 is also disposed within the tank 110. By counting on the oil level gauge 160, it can be judged whether the charged part of the load switch 130 is submerged by the insulating oil, so as to improve the safety of use.
It should be appreciated that since the insulating oil is an arc extinguishing medium, there is a certain risk if the insulating oil cannot completely wrap the load switch 130. The height of the insulating oil can be clearly obtained by the oil level gauge 160 to judge whether the load switch is immersed in the insulating oil.
In some embodiments, as shown in FIG. 3, the tank 110 includes a top cover with a pressure relief valve 310 disposed thereon. As the lead 180 generates heat during operation of the device, a portion of the insulating oil liquefies, thereby causing a rapid increase in the pressure within the tank. By providing the pressure relief valve 310, the pressure can be relieved, thereby protecting the oil tank from deformation or burst, and improving the safety of the high-voltage protection switch.
In some embodiments, an electric mechanism is connected to the load switch 110, and the load switch 110 is remotely controlled by the electric mechanism. Through remote control's mode, can avoid manual operation, promote the efficiency of maintaining and the security of maintaining.
It should be understood that the electric mechanism is disposed in the box 110 together with the load switch 110, and the electric mechanism is remotely monitored in a wireless manner.
In some embodiments, the fuse 120 is a full-range fuse. Through setting up the full range fuse, can realize the overload and the short-circuit protection function of electric current for high-voltage protection switch simple structure and security are higher.
In some embodiments, the high voltage protection switch further comprises a fuse mount 170, the fuse mount 170 being connected to one side of the case, the fuse being placed in the fuse mount. By means of the fuse mounting seat, the installation and maintenance of the fuse 120 are more convenient.
It should be understood that in some embodiments, the fuse mount 170 may be horizontally positioned, with one end of the fuse mount 170 being welded to the outside of the case 110, so that the fuse 120 may be extracted from the side. In other embodiments, the fuse mount 170 may be bolted into the housing 110 by placing the fuse 120 on the fuse mount 170 so that it is placed within the housing 110.
A high voltage protection switch according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 3 as a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.
Specifically, a high-voltage protection switch of 35KV applied to a 3-phase transformer is taken as an example.
As shown in fig. 1, one side of the case 110 of the high voltage protection switch is a right-angled concave surface 111, and the side opposite to the right-angled concave surface 112 is an obtuse-angled concave surface. 3 fuse holders 170 are sequentially welded to an upper portion of the case 110 in a horizontal direction. An opening is provided at one side of the fuse mount 170. Specifically, the full range fuse 120 is fixed in the fuse mount 170, and the full range fuse 120 may be pulled out from one side through the opening.
Specifically, an oil temperature gauge 160 is further provided above the full range fuse 120. An oil-immersed load switch 130 is provided below the full-range fuse 120. The oil-immersed load switch 130 is divided into a right-angled concave surface 111 and an obtuse-angled concave surface 112 on two sides. Specifically, as shown in fig. 1, 3 second high voltage bushings 150 perpendicular to the box body 110 are sequentially disposed on the obtuse-angle concave surface 112. The lower part of the casing 110 is provided with 3 first high voltage bushings 140, at the side adjacent to the second high voltage bushing 150.
Specifically, in a practical application scenario of the box-type substation, as shown in fig. 2, one end of the lead 180 is connected to the transformer, passes through the first high-voltage bushing 140, enters the box body 110, is connected to the oil-immersed load switch 130 and the full-range fuse 130 at a time, passes through the second high-voltage bushing 150, and is connected to an external circuit.
Specifically, as shown in fig. 1, the first lead 180 is connected to the transformer, passes through the first high-voltage bushing 140, is connected to the oil-filled load switch 130 and the full-range fuse 130, and then passes through the first second high-voltage bushing 150, and is connected to the external circuit. Similarly, the second lead 182 and the third lead 183 connect the first high-voltage bushing 140, the oil-filled load switch 130, and the full-range fuse 120 and the second high-voltage bushing 140 corresponding to the first high-voltage bushing 140 in the same manner. In this way, a faulty circuit can be quickly identified by the mounting location of the first high voltage bushing 140.
Specifically, an electric switch is further disposed on the oil-immersed load switch 130, and the oil-immersed load switch 130 can be remotely controlled through the electric switch. The electric switch is not shown because it is a common structure.
Specifically, as shown in fig. 3, a pressure release valve 310 is further provided on an upper surface of the top cover of the case 110. Specifically, it should be understood that a hand buckle may be further disposed on the top cover, and the box body 110 may be opened by the hand buckle to overhaul devices in the box body 110. The illustration is not given as it is a common component. Specifically, a nameplate can be further disposed below the fuse mounting seat 170, and the information of the transformer and the external circuit of the connected specific circuit can be distinguished through nameplate information.
It should be understood that, because the high-voltage protection switch is independent, it can be more flexibly fixed at various positions of the transformer, and can be fixed by welding, bolts, etc., which are not described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. A high voltage protection switch, comprising:
the box body is internally provided with insulating oil;
a load switch having a charged body immersed in the insulating oil;
the fuses are connected with the load switch and arranged in the box body;
the first high-voltage bushings are arranged outside the box body and correspond to the fuses one by one;
the second high-voltage bushings are arranged outside the box body and correspond to the fuses one by one; a lead is arranged in the first high-voltage sleeve, one end of the lead is connected with a transformer, and the other end of the lead is sequentially connected with the load switch and the fuse; and through the second high voltage bushing corresponding to the fuse.
2. A high-voltage protection switch according to claim 1,
the box body is provided with a right-angled concave surface and/or an obtuse-angled concave surface.
3. A high-voltage protection switch according to claim 1,
an oil level gauge is further arranged in the box body.
4. A high-voltage protection switch according to claim 1,
the box body comprises a top cover, and a pressure release valve is arranged on the top cover.
5. A high-voltage protection switch according to claim 1,
the load switch is connected with an electric mechanism, and the load switch is remotely controlled through the electric mechanism.
6. A high-voltage protection switch according to claim 1,
the fuse is a full range fuse.
7. The high voltage protection switch according to any one of claims 1 to 6, further comprising:
the fuse mounting base, the fuse mounting base with box one side is connected, the fuse is placed in the fuse mounting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020698775.1U CN211859157U (en) | 2020-04-29 | 2020-04-29 | High-voltage protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020698775.1U CN211859157U (en) | 2020-04-29 | 2020-04-29 | High-voltage protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211859157U true CN211859157U (en) | 2020-11-03 |
Family
ID=73178596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020698775.1U Active CN211859157U (en) | 2020-04-29 | 2020-04-29 | High-voltage protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211859157U (en) |
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2020
- 2020-04-29 CN CN202020698775.1U patent/CN211859157U/en active Active
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