CN201584286U - Sampling connecting valve for current transformer - Google Patents
Sampling connecting valve for current transformer Download PDFInfo
- Publication number
- CN201584286U CN201584286U CN2009202768316U CN200920276831U CN201584286U CN 201584286 U CN201584286 U CN 201584286U CN 2009202768316 U CN2009202768316 U CN 2009202768316U CN 200920276831 U CN200920276831 U CN 200920276831U CN 201584286 U CN201584286 U CN 201584286U
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- CN
- China
- Prior art keywords
- spool
- valve
- hole
- current transformer
- valve body
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a sampling connecting valve for a current transformer, which comprises a valve body, a valve core, a connecting sleeve and a valve. A connecting threaded hole and a valve core hole are coaxially arranged inside the valve body, one end of the valve core is arranged inside the connecting threaded hole, the inner diameter of the connecting threaded hole is larger than the diameter of the valve core inside the connecting threaded hole, a hole coaxial to the valve core is arranged inside the other end of the valve core, and penetrates a valve core section corresponding to the valve core hole to be communicated with a radial hole vertical to a valve core axis so as to form an oil hole, the connecting sleeve is connected with the valve core, and the valve is connected with the connecting sleeve. In the sampling connecting valve for the current transformer, the valve body is connected with a top-bead oil drain valve in a seal way, the valve core pushes to open the top-bead oil drain valve to drain oil when the valve body is screwed in, and oil sample flows out through the oil hole inside the valve core, and is connected with an external sampling device through the valve and a connection mouth. During the whole process, the oil sample does not contact with air, and then consistency of obtained oil sample and the oil sample inside the current transformer can be guaranteed, and the implementation of chromatographic analysis can accurately reflect primary insulating conditions of the current transformer.
Description
Technical field:
The utility model relates to the current transformer of transformer station, particularly obtains the device of oil sample in the current transformer, specifically is that a kind of sampling that is used for current transformer connects valve.
Background technology:
The effect of current transformer is that the electric current of the bigger primary equipment of numerical value is converted into the less secondary current of numerical value by certain no-load voltage ratio; be used for protecting, purposes such as measurement; it is simple in structure that let it be to the greatest extent; winding, secondary winding, iron core and a framework that mutually insulated is only arranged; compositions such as whole binding post, but it plays important effect in whole electric power system.When primary equipment breaks down relaying protection can correct operation, rapidly disengagement failure equipment, reduce the power failure scope, the accident that prevents enlarges, and guarantees the safe operation of electric power system, the current transformer decisive role.With regard to the running status of current transformer well whether, in certain period, need its detection of insulating, if the main insulation of current transformer has problem, chromatography can be found the significant change of its characteristic gas, and the needed oil sample of chromatography must be the oil sample that the exposed time is the shortest even nothing is exposed in atmosphere, its chromatography result is the most accurate, the also the most approaching reality of pinpointing the problems, what install on the most of current transformer of existing transformer station is decorative pearl on top of an official cap formula fuel outlet valve, needing sampling to withstand the decorative pearl on top of an official cap with screwdriver when draining the oil drains the oil, the oil sample of emitting is owing to open-assembly time in air is long, and bigger difference is arranged with actual oil sample, and oil spill is also more, and the also more inaccessibility actual value of the result of chromatography can not accurately be analyzed the main insulation situation of current transformer.
The utility model content:
The purpose of this utility model is to provide a kind of sampling that is used for current transformer to connect valve, the described this sampling that is used for current transformer connects valve, be exposed to overlong time in the air in the time of solving decorative pearl on top of an official cap formula fuel outlet valve sampling in the prior art and cause oil sample change, to the inaccurate technical problem of main insulation situation analysis of current transformer.
The purpose of this utility model is achieved through the following technical solutions: this sampling connects valve and comprises valve body, spool, adapter sleeve and valve, be provided with connecting thread hole and spool bore in the valve body coaxially, the external screw thread of decorative pearl on top of an official cap formula fuel outlet valve matches on connecting thread hole and the current transformer, the spool bore that spool one end passes on the valve body is positioned at the valve body outside, spool is liquid sealing with spool bore and is connected, the spool other end is positioned at the connecting thread hole, the internal diameter in connecting thread hole is greater than the diameter that is positioned at its inner spool, be provided with the hole coaxial in spool one end with spool, the spool section of the spool bore correspondence formation oilhole that is connected with radial hole perpendicular to valve core axis is crossed in this hole, be positioned at the external screw thread that is provided with of outer spool one end of valve body, adapter sleeve is connected with spool by this external screw thread, and valve is connected with adapter sleeve by screw thread.
Spool is the cylindrical member that the middle part is provided with round boss, the diameter of this round boss is greater than the diameter of spool bore, be positioned at the spool bore interference fit of the spool and the valve body of round boss one side, be positioned at the internal diameter of the spool external diameter of round boss opposite side less than the connecting thread hole, spool one end that is positioned at the valve body outside is provided with the hole coaxial with spool, and the round boss of the spool formation oilhole that is connected with radial hole perpendicular to valve core axis is crossed in this hole.
The spool end that is positioned at inner space, connecting thread hole is provided with concave spherical surface, and the decorative pearl on top of an official cap of decorative pearl on top of an official cap formula fuel outlet valve matches on this concave spherical surface and the current transformer.
In valve body, be positioned at spool bore and junction, connecting thread hole is provided with annular inside groove, the diameter of this annular inside groove is greater than the diameter in connecting thread hole.
Vertically with valve core axis be provided with three radial holes, these three radial holes evenly distribute along the circumferencial direction of spool.
Be provided with one mutually with valve and connect mouth.
The utility model is compared with prior art, and its effect is actively with tangible.The utility model connects valve in the sampling that is used for current transformer and adopts valve body and decorative pearl on top of an official cap formula fuel outlet valve to be tightly connected, and spool backs down decorative pearl on top of an official cap formula fuel outlet valve and drains the oil when valve body is screwed into, oil sample flows out by the oilhole in the spool, again by valve, connect mouth and be connected with external sampler, oil sample does not contact with air in the whole process, guarantee the oil sample of taking-up and the oil sample consistency of current transformer inside, carry out the main insulation situation of chromatography energy actual response current transformer.If at the spool middle part round boss is set, is convenient to the assembling of spool and valve body.The spool end that is positioned at inner space, connecting thread hole is provided with concave spherical surface, and the decorative pearl on top of an official cap of decorative pearl on top of an official cap formula fuel outlet valve matches on this concave spherical surface and the current transformer, and when being convenient to be screwed into valve body, the end of spool is backed down the decorative pearl on top of an official cap effectively, takes oil sample.In valve body, be positioned at spool bore and junction, connecting thread hole is provided with annular inside groove, oil sample that can the splendid attire q.s.Vertically with valve core axis be provided with three radial holes, these three radial holes evenly distribute along the circumferencial direction of spool, are convenient to oil sample and flow out smoothly along oilhole.Be provided with one mutually with valve and connect mouth,, be connected such as syringe by connecing the convenient and outer samples device of mouth.
Description of drawings:
Fig. 1 is the valve body structure schematic diagram of the utility model first embodiment.
Fig. 2 is the valve core structure schematic diagram of the utility model first embodiment.
Fig. 3 is the end view of Fig. 1.
Embodiment 1:
As Fig. 1, Fig. 2 and shown in Figure 3, the described sampling that is used for current transformer connects valve, comprise valve body 4, spool 5, adapter sleeve 3 and valve 2, be provided with connecting thread hole 42 and spool bore 41 in the valve body 4 coaxially, the external screw thread of decorative pearl on top of an official cap formula fuel outlet valve (not drawing among the figure) matches on connecting thread hole 42 and the current transformer, in valve body 4, be positioned at spool bore 41 and be provided with annular inside groove 43 with 42 junctions, connecting thread hole, the diameter of this annular inside groove 43 is greater than the diameter in connecting thread hole 42, the spool bore 41 that spool 5 one ends pass on the valve body 4 is positioned at the valve body outside, spool is the liquid sealing interference with spool bore and is connected, spool 5 other ends are positioned at connecting thread hole 42, the internal diameter in connecting thread hole is greater than the diameter that is positioned at its inner spool, spool 5 is cylindrical members that the middle part is provided with round boss 53, the diameter of this round boss 53 is greater than the diameter of spool bore 41, be positioned at spool bore 41 interference fit of the spool and the valve body of round boss 53 1 sides, be positioned at the internal diameter of the spool external diameter of round boss 53 opposite sides less than connecting thread hole 42, spool one end that is positioned at the valve body outside is provided with the hole 51 coaxial with spool, the round boss 53 of the spool formation oilhole that is connected with radial hole 52 perpendicular to valve core axis is crossed in this hole 51, vertically with valve core axis be provided with three radial holes 52, these three radial holes 52 evenly distribute along the circumferencial direction of spool 5, the spool end that is positioned at inner space, connecting thread hole is provided with concave spherical surface 54, the decorative pearl on top of an official cap (not drawing among the figure) of decorative pearl on top of an official cap formula fuel outlet valve matches on this concave spherical surface 54 and the current transformer, be positioned at the external screw thread that is provided with of valve body 4 spool one end outward, adapter sleeve 3 is connected with spool 5 by this external screw thread, valve 2 is connected with adapter sleeve 3 by screw thread, be provided with one mutually with valve 2 and connect mouth 1, be convenient to be connected with outer samples device (such as syringe) by connecing mouth 1.
Claims (6)
1. a sampling that is used for current transformer connects valve, it is characterized in that: this sampling connects valve and comprises valve body, spool, adapter sleeve and valve, be provided with connecting thread hole and spool bore in the valve body coaxially, the external screw thread of decorative pearl on top of an official cap formula fuel outlet valve matches on connecting thread hole and the current transformer, the spool bore that spool one end passes on the valve body is positioned at the valve body outside, spool is liquid sealing with spool bore and is connected, the spool other end is positioned at the connecting thread hole, the internal diameter in connecting thread hole is greater than the diameter that is positioned at its inner spool, be provided with the hole coaxial in spool one end with spool, the spool section of the spool bore correspondence formation oilhole that is connected with radial hole perpendicular to valve core axis is crossed in this hole, be positioned at the external screw thread that is provided with of outer spool one end of valve body, adapter sleeve is connected with spool by this external screw thread, and valve is connected with adapter sleeve by screw thread.
2. the sampling that is used for current transformer as claimed in claim 1 connects valve, it is characterized in that: spool is the cylindrical member that the middle part is provided with round boss, the diameter of this round boss is greater than the diameter of spool bore, be positioned at the spool bore interference fit of the spool and the valve body of round boss one side, be positioned at the internal diameter of the spool external diameter of round boss opposite side less than the connecting thread hole, spool one end that is positioned at the valve body outside is provided with the hole coaxial with spool, and the round boss of the spool formation oilhole that is connected with radial hole perpendicular to valve core axis is crossed in this hole.
3. the sampling that is used for current transformer as claimed in claim 1 or 2 connects valve, and it is characterized in that: the spool end that is positioned at inner space, connecting thread hole is provided with concave spherical surface, and the decorative pearl on top of an official cap of decorative pearl on top of an official cap formula fuel outlet valve matches on this concave spherical surface and the current transformer.
4. the sampling that is used for current transformer as claimed in claim 1 or 2 connects valve, it is characterized in that: in valve body, be positioned at spool bore and junction, connecting thread hole is provided with cannelure, the diameter of this cannelure is greater than the diameter in connecting thread hole.
5. the sampling that is used for current transformer as claimed in claim 1 or 2 connects valve, it is characterized in that: vertically with valve core axis be provided with three radial holes, these three radial holes evenly distribute along the circumferencial direction of spool.
6. the sampling that is used for current transformer as claimed in claim 1 or 2 connects valve, it is characterized in that: be provided with one mutually with valve and connect mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202768316U CN201584286U (en) | 2009-12-10 | 2009-12-10 | Sampling connecting valve for current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202768316U CN201584286U (en) | 2009-12-10 | 2009-12-10 | Sampling connecting valve for current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201584286U true CN201584286U (en) | 2010-09-15 |
Family
ID=42726298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202768316U Expired - Fee Related CN201584286U (en) | 2009-12-10 | 2009-12-10 | Sampling connecting valve for current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201584286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568509A (en) * | 2014-11-18 | 2015-04-29 | 国网河南省电力公司濮阳供电公司 | Current transformer oil extraction sampling valve |
-
2009
- 2009-12-10 CN CN2009202768316U patent/CN201584286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568509A (en) * | 2014-11-18 | 2015-04-29 | 国网河南省电力公司濮阳供电公司 | Current transformer oil extraction sampling valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20121210 |