CN219712413U - Novel switching valve for SF6 gas insulation current transformer - Google Patents
Novel switching valve for SF6 gas insulation current transformer Download PDFInfo
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- CN219712413U CN219712413U CN202320952090.9U CN202320952090U CN219712413U CN 219712413 U CN219712413 U CN 219712413U CN 202320952090 U CN202320952090 U CN 202320952090U CN 219712413 U CN219712413 U CN 219712413U
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- 238000009413 insulation Methods 0.000 title description 5
- 230000001502 supplementing effect Effects 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 10
- 229910018503 SF6 Inorganic materials 0.000 claims description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model belongs to SF 6 The technical field of gas-insulated current transformers discloses an SF 6 The novel switching valve for the gas-insulated current transformer comprises a valve body, wherein the bottom of the valve body is provided with a gas supplementing interface and a valve body interface in parallel, and the top of the valve body is provided with an appearance interface between the gas supplementing interface and the valve body interface; one end of the valve body is provided withThe valve is characterized by comprising a valve cavity communicated with the external interface, the air supplementing interface and the valve body interface, wherein a valve rod is movably arranged in the valve cavity, and a valve clack for isolating the external interface from the air supplementing interface or isolating the external interface from the valve body interface is arranged on the valve rod; one end of the valve body is provided with an adjusting component connected with the valve rod and used for pushing the valve rod to move; the other end of the valve body is provided with an elastic component for resetting the valve rod. The switching valve realizes the operation of checking the density meter and supplementing air to the transformer, and has the advantages of simple structure, low manufacturing difficulty, convenient operation and the like.
Description
Technical Field
The utility model relates to SF 6 Gas insulation current transformer technologyIn the field of surgery, in particular to an SF 6 A novel switching valve for a gas-insulated current transformer.
Background
SF 6 The gas insulation current transformer has been widely used in electric power systems with the advantages of excellent insulation, vibration resistance, explosion resistance, and simple maintenance. SF (sulfur hexafluoride) 6 A density meter (also called a density relay) is arranged on a base of the gas insulation current transformer, the meter can display the gas pressure and density inside the transformer, and when the pressure inside the transformer is reduced to the alarm pressure, a signal is provided to require air supplement.
The traditional density meter is directly installed on the base, and in normal operation and maintenance, such as: and (3) supplementing air or checking the density meter, and the like, and removing the density meter to perform inflation or finish checking the density meter. The mounting mode of the density meter increases maintenance time, and deformation damage failure of a meter head interface, the pressure meter, parts thereof and the like can be caused by repeated disassembly and assembly of the density meter, so that the SF6 gas current transformer leaks gas.
At present, in the prior art, a density meter is arranged on a base through a three-way ball valve, air supplementing and density meter checking are realized through controlling the on-off of the three-way ball valve, a ball core of the three-way ball valve is externally machined and arranged in a three-way air chamber, a hole is necessarily formed on a certain side, the hole diameter is also suitable for adjusting the ball core and a sealing ring, and therefore the three-way ball valve has the problems of complex structure, high machining difficulty, high cost and the like.
There are also techniques in the prior art that do not use ball valves, such as: chinese patent application No. CN201920047352.0 discloses an SF 6 The air valve for the gas current transformer comprises a valve body, wherein a body joint, an air supplementing joint, an appearance joint and an adjusting joint are arranged on the valve body, an adjusting bolt is arranged in the adjusting joint, and a piston head is arranged at the end part of the adjusting joint and can be used for isolating the internal communication passages of the body joint, the air supplementing joint and the appearance joint. The air valve realizes that a density meter does not need to be dismantled in the normal operation and maintenance process of the current transformer, thereby saving maintenance cost and reducing maintenance time. When the air valve with the structure is regulated, the protection cover needs to be uncovered and the position of the piston head is regulated by adopting a specific spanner, and the air valve does not need to be openedThe adjustment is troublesome only, the position of the piston head is difficult to grasp when the piston head is adjusted, and the piston head has elasticity and is easy to damage if excessively pressed when adjusted.
Disclosure of Invention
The utility model aims to solve the technical problems existing in the prior art. To this end, the utility model provides an SF 6 A novel switching valve for a gas-insulated current transformer.
The technical scheme adopted for solving the technical problems is as follows:
providing an SF 6 The novel switching valve for the gas-insulated current transformer comprises a valve body, wherein the bottom of the valve body is provided with a gas supplementing interface and a valve body interface in parallel, and the top of the valve body is provided with an appearance interface between the gas supplementing interface and the valve body interface; one end of the valve body is provided with a valve cavity communicated with the external interface, the air supplementing interface and the valve body interface, a valve rod is movably arranged in the valve cavity, and a valve clack for isolating the external interface from the air supplementing interface or isolating the external interface from the valve body interface is arranged on the valve rod; one end of the valve body is provided with an adjusting component connected with the valve rod and used for pushing the valve rod to move; the other end of the valve body is provided with an elastic component for resetting the valve rod.
In a preferred embodiment of the utility model, a piston head is arranged at one end of the valve rod, which is close to the adjusting assembly, the piston head and the valve rod are integrally formed, and a plurality of sealing rings for sealing the valve cavity are arranged outside the piston head.
In a preferred embodiment of the utility model, the adjustment assembly comprises an end cap threadably connected to the open end of the valve cavity of the valve body and an adjustment screw threaded through the end cap.
In a preferred embodiment of the present utility model, a ball is disposed at one end of the adjusting screw located in the valve cavity, and a hand wheel is disposed at one end of the adjusting screw located outside the valve body.
In a preferred embodiment of the present utility model, the adjusting screw is further provided with an in-place marking, including an in-place marking first when the valve rod isolates the external interface from the air supply interface and an in-place marking second when the valve rod isolates the external interface from the valve body interface.
In a preferred embodiment of the present utility model, the adjusting screw is further provided with a bolt hole, and the bolt hole is arranged on the in-place marking line one.
In a preferred embodiment of the present utility model, the elastic component includes a spring and a baffle, the baffle is disposed on the valve rod, one end of the spring is connected to the valve body, and the other end of the spring is connected to the baffle.
Compared with the prior art, the utility model has the beneficial effects that:
in a normal state, the valve rod isolates the external interface from the air supplementing interface under the action of the elastic component, and the external interface is communicated with the valve body interface at the moment, so that the density meter normally detects the pressure of the air in the transformer; when the density meter is required to be checked, the valve rod is pushed to isolate the appearance interface from the valve body interface through the adjusting assembly, and at the moment, the appearance interface is communicated with the air supplementing interface, and the density meter is checked through the air supplementing interface; when the air is needed to be supplemented into the transformer, the control and regulation assembly conducts the valve rod to the outer surface interface, the air supplementing interface and the valve body interface, and air is supplemented into the transformer through the air supplementing interface. The switching valve has the advantages of simple structure, low manufacturing difficulty, convenient operation and the like.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 shows SF provided by the present utility model 6 A structural state diagram of the novel switching valve for the gas-insulated current transformer in a normal state;
FIG. 2 shows SF provided by the present utility model 6 A structural state diagram of the novel switching valve for the gas-insulated current transformer when the density meter is checked;
FIG. 3 is the present embodimentWith a novel SF 6 And a structural state diagram of the novel switching valve for the gas-insulated current transformer during air supplementing.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in any one of fig. 1 to 3, the present embodiment provides an SF 6 The novel switching valve for the gas-insulated current transformer comprises a valve body, wherein the bottom of the valve body is provided with a gas supplementing interface 3 and a valve body interface 1 in parallel, and the top of the valve body is positioned at the gas supplementing interface 3 and the valve body interface 1An appearance interface 2 is arranged between the valve body interfaces 1, wherein: the air supplementing connector is connected with the air supplementing connector, and when air supplementing is needed, the air supplementing connector is connected with the air supplementing pipe; the valve body interface is arranged on the base of the transformer through a valve body joint; the appearance interface is connected with the density meter through an appearance joint.
One end of the valve body is provided with a valve cavity 100 which is communicated with the external interface 2, the air supplementing interface 3 and the valve body interface 1, a valve rod 4 is movably arranged in the valve cavity 100, the valve rod 4 is provided with a valve clack 4.1 which is used for isolating the external interface 2 from the air supplementing interface 3 or isolating the external interface 2 from the valve body interface 1, and two sides of the valve clack 4.1 are provided with sealing gaskets made of PEEK materials; one end of the valve body is provided with an adjusting component 5 connected with the valve rod 4 and used for pushing the valve rod 4 to move; the other end of the valve body is provided with an elastic component 6 for resetting the valve rod 4.
When the switching valve of the embodiment is in a normal state, as shown in fig. 1, the valve rod isolates the external interface from the air supplementing interface under the action of the elastic component, at the moment, the external interface is communicated with the valve body interface, and the density meter normally detects the pressure of the air in the transformer. When the density meter is required to be checked, as shown in fig. 2, the valve rod is pushed to isolate the appearance interface from the valve body interface through the adjusting assembly, and at the moment, the appearance interface is communicated with the air supplementing interface, and the density meter is checked through the air supplementing interface; when the air needs to be supplemented into the transformer, as shown in figure 3, the control and regulation assembly conducts the valve rod to the external interface, the air supplementing interface and the valve body interface, and supplements air into the transformer through the air supplementing interface. The switching valve has the advantages of simple structure, low manufacturing difficulty, convenient operation and the like.
Further, as shown in any one of fig. 1 to fig. 3, a piston head 4.2 is disposed at one end of the valve rod 4 near the adjusting component 5 in this embodiment, the piston head 4.2 and the valve rod 4 are integrally formed, and a plurality of sealing rings 4.3 for sealing with the valve cavity 100 are disposed outside the piston head 4.2, so as to realize sealing through the sealing rings on the piston head.
Preferably, as shown in any one of fig. 1 to fig. 3, the adjusting assembly 5 in this embodiment includes an end cover 5.1 and an adjusting screw 5.2, the end cover 5.1 is screwed to the valve cavity opening end of the valve body, and the adjusting screw 5.2 is threaded through the end cover 5.1. When the density meter is required to be checked or air is supplemented into the transformer, the valve rod is jacked up by screwing in the adjusting screw, and the corresponding position of the valve rod is adjusted according to the work required. Specifically, one end of the adjusting screw 5.2, which is positioned at the outer side of the valve body, is provided with a hand wheel 5.2.1, so that the manual operation of the adjusting screw is facilitated.
Preferably, as shown in any one of fig. 1 to fig. 3, the elastic component 6 in this embodiment includes a spring 6.1 and a baffle 6.2, the baffle 6.2 is disposed on the valve rod 4, one end of the spring 6.1 is connected to the valve body, and the other end is connected to the baffle 6.2. Under normal state, the valve rod isolates the external interface from the air supplementing interface under the action of the spring.
Example two
On the basis of the first embodiment, as shown in any one of figures 1 to 3, the ball 5.2.2 is arranged at one end of the adjusting screw 5.2, which is positioned in the valve cavity, so that the friction force between the adjusting screw and the piston head of the valve rod can be greatly reduced.
Example III
On the basis of the first embodiment or the second embodiment, as shown in any one of fig. 1 to 3, the adjusting screw 5.2 is further provided with an in-place marking, which comprises an in-place marking one 5.2.3 when the valve rod 4 isolates the external interface 2 from the air supplementing interface 3 and an in-place marking two 5.2.4 when the valve rod isolates the external interface 2 from the valve body interface 1. The in-place marking is used as a reference for the position of the valve rod when the adjusting screw is adjusted. In a normal state, the in-place marking on the adjusting screw is completely exposed, and the adjusting screw and the valve rod can not be contacted at the moment; in the verification state, an in-place marking line II on the adjusting screw just enters a screw port of the end cover; when in an inflated state, the first positioning mark on the adjusting screw rod enters the end cover for a certain distance, and the second positioning mark is exposed out of the end cover for a certain distance.
Example IV
In addition to any one of the first to fourth embodiments, in this embodiment, a bolt hole (not shown in the drawing) is further provided on the adjusting screw 5.2, and the bolt hole is provided on the first in-place marking line. The bolt hole is arranged, and the bolt is inserted in a normal state, so that the isolation failure of the external interface and the air supplementing interface caused by the fact that the adjusting screw is screwed in by false touch or false operation is prevented.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (7)
1. SF (sulfur hexafluoride) 6 The utility model provides a novel diverter valve for gas-insulated current transformer, includes valve body, its characterized in that:
the bottom of the valve body is provided with an air supplementing interface and a valve body interface in parallel, and an appearance interface is arranged between the air supplementing interface and the valve body interface at the top of the valve body;
one end of the valve body is provided with a valve cavity communicated with the external interface, the air supplementing interface and the valve body interface, a valve rod is movably arranged in the valve cavity, and a valve clack for isolating the external interface from the air supplementing interface or isolating the external interface from the valve body interface is arranged on the valve rod;
one end of the valve body is provided with an adjusting component connected with the valve rod and used for pushing the valve rod to move;
the other end of the valve body is provided with an elastic component for resetting the valve rod.
2. The SF according to claim 1 6 Novel switching valve for gas-insulated current transformer, its characterized in that: the valve rod is close to one end of the adjusting assembly and is provided with a piston head, the piston head and the valve rod are integrally formed, and a plurality of sealing rings used for sealing the valve cavity are arranged outside the piston head.
3. The SF according to claim 1 6 Novel switching valve for gas-insulated current transformer, its characterized in that: the adjusting assembly comprises an end cover and an adjusting screw rod, and the end cover is in threaded connection with the valve cavity of the valve bodyAnd the adjusting screw threads penetrate through the end cover.
4. A SF according to claim 3 6 Novel switching valve for gas-insulated current transformer, its characterized in that: the ball is arranged at one end of the adjusting screw rod, which is positioned in the valve cavity, and the hand wheel is arranged at one end of the adjusting screw rod, which is positioned at the outer side of the valve body.
5. A SF according to claim 3 6 Novel switching valve for gas-insulated current transformer, its characterized in that: the adjusting screw is also provided with an in-place marking, which comprises a first in-place marking when the valve rod isolates the external interface from the air supplementing interface and a second in-place marking when the valve rod isolates the external interface from the valve body interface.
6. A SF according to claim 3 6 Novel switching valve for gas-insulated current transformer, its characterized in that: the adjusting screw is also provided with a bolt hole, and the bolt hole is arranged on the in-place marking line I.
7. The SF according to claim 1 6 Novel switching valve for gas-insulated current transformer, its characterized in that: the elastic component includes spring and baffle, the baffle is located on the valve rod, the one end of spring is connected the valve body, the other end is connected the baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320952090.9U CN219712413U (en) | 2023-04-24 | 2023-04-24 | Novel switching valve for SF6 gas insulation current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320952090.9U CN219712413U (en) | 2023-04-24 | 2023-04-24 | Novel switching valve for SF6 gas insulation current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219712413U true CN219712413U (en) | 2023-09-19 |
Family
ID=87980358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320952090.9U Active CN219712413U (en) | 2023-04-24 | 2023-04-24 | Novel switching valve for SF6 gas insulation current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219712413U (en) |
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2023
- 2023-04-24 CN CN202320952090.9U patent/CN219712413U/en active Active
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