CN213669351U - Plug for insulating oil taking needle tube - Google Patents
Plug for insulating oil taking needle tube Download PDFInfo
- Publication number
- CN213669351U CN213669351U CN202020724069.XU CN202020724069U CN213669351U CN 213669351 U CN213669351 U CN 213669351U CN 202020724069 U CN202020724069 U CN 202020724069U CN 213669351 U CN213669351 U CN 213669351U
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- China
- Prior art keywords
- needle tube
- plug
- needle
- insulating oil
- oil
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Abstract
The utility model provides an insulating oil gets oily end cap for needle tubing, it includes the needle stopper its characterized in that, locates the retaining ring of needle stopper one end to and locate the end-stop of the needle stopper other end. The needle tube plug, the check ring at one end of the needle tube plug, the sealing sleeve and the check head at the other end of the needle tube plug realize internal and external sealing of the oil taking needle tube, effectively prevent the problems of pollution or leakage and the like of an insulating oil sample of a transformer in the transportation and operation processes, and the use of the check head can ensure that the needle tube plug cannot be accidentally removed in the moving and operation processes of the oil taking needle tube. The utility model has the advantages of simple structure, convenient use, obvious effect, etc.
Description
Technical Field
The utility model relates to an end cap, especially an end cap for insulating oil extraction needle tubing belongs to sealing member manufacturing and designing technical field.
Background
After the oil-taking needle tube finishes the sampling work of the transformer insulating oil, the needle tube needs to be sealed by using a plug, so that gas is prevented from entering and polluting an oil sample. Before the traditional plug is sealed, the plug needs to be pressed by fingers, and insulating oil is used for flushing a plugged hole until no air bubble exists in the plug, so that the plug can be sleeved into a conical head of an oil-taking needle tube. The operation can be completed only by skillful skills and rich experience of oil-taking personnel, if the operation is not proper, not only can the oil sample be polluted, but also the plug can be loosened and separated in the transportation process, so that the problem that the environment is polluted by the insulating oil is caused. There is therefore a need for improvements in the prior art.
Disclosure of Invention
Because of the structure problem, the easy appearance becomes flexible and drops, sealed not tight, the difficult scheduling problem of operation for solving the end cap that the oil needle tubing was got to current transformer insulating oil, the utility model provides an end cap for insulating oil needle tubing gets oil.
The utility model discloses a following technical scheme accomplishes: the plug is characterized by comprising a needle tube plug, a check ring arranged at one end of the needle tube plug and a check head arranged at the other end of the needle tube plug, so that after an injector sucks transformer insulating oil, the needle tube plug is plugged into an oil taking needle tube at the front end of the injector, and the needle tube plug is prevented from accidentally dropping out through the check head, thereby completing the sealing of the oil taking needle tube.
The needle tube plug is a hollow tube body with an open top end and a rubber-plugged bottom end, and the outer diameter of the hollow tube body is smaller than the inner diameter of the oil taking needle tube, so that the oil taking needle tube is sealed through the needle tube plug.
The oil extraction needle tube is characterized in that the retainer ring is an annular body with a through hole in the center, the through hole in the center of the retainer ring is connected with one end of the needle tube plug, a seal sleeve is sleeved on the outer edge of the retainer ring, the inner diameter of the seal sleeve is larger than the outer diameter of the oil extraction needle tube, so that the needle tube plug is plugged into the oil extraction needle tube, and the outer wall of the oil extraction needle tube is.
The check head is umbrella-shaped and made of plastic or rubber so as to conveniently enter the oil taking needle tube, and the inner end of the oil taking needle tube is blocked by the umbrella-shaped structure so as to prevent the needle tube plug from falling out.
The utility model has the advantages of it is following and effect: by adopting the scheme, the inner and outer sealing of the oil taking needle tube is realized through the needle tube plug, the check ring at one end of the needle tube plug, the sealing sleeve and the check head at the other end of the needle tube plug, the problems of pollution or leakage and the like of an insulating oil sample of the transformer in the transportation and operation processes are effectively prevented, and the check head can ensure that the needle tube plug cannot be accidentally separated from the oil taking needle tube in the moving and operation processes. The utility model has the advantages of simple structure, convenient use, obvious effect, etc. The plug is an ideal plug.
Drawings
FIG. 1 is a view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a usage state diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides an insulating oil gets oily end cap for needle tubing, it includes syringe stopper 1, locate the retaining ring 3 of syringe stopper 1 upper end, and locate the end stop 5 of syringe stopper 1 lower extreme, syringe stopper 1 establishes to open to the top, the cavity body of rubber shutoff is used to the bottom, the external diameter of cavity body is less than and gets oily needle tubing 4 internal diameters, retaining ring 3 establishes to the ring body of central band-pass hole, 3 central through-holes of retaining ring meet with 1 upper ends of syringe stopper, and 3 outer fringe of retaining ring are equipped with seal cover 2, 2 internal diameters of this seal cover are greater than and get oily needle tubing 4 external diameters, end stop 5 establishes to the umbrella-type.
When the device works, firstly, the injector 6, the piston 7 and the oil taking needle tube 4 are used for extracting transformer insulating oil into a cavity of the injector 6, then the needle tube plug 1 is plugged into the oil taking needle tube 4 at the front end of the injector 6, and the inner port of the oil taking needle tube 4 is sealed by the check head 5, so that the needle tube plug 1 is prevented from accidentally dropping, the insulating oil is prevented from leaking outwards, and the protective gas, namely nitrogen, is conveyed inwards through the rubber plug penetrating the lower end of the needle tube plug 1 by the air needle during operation, and the replaced air is extracted, so that various tests of the insulating oil are completed.
Claims (4)
1. The plug for the insulating oil-taking needle tube is characterized by comprising a needle tube plug, a check ring arranged at one end of the needle tube plug and a check head arranged at the other end of the needle tube plug.
2. The plug for an insulating oil extraction needle according to claim 1, wherein the needle plug is a hollow tube with an open top end and a rubber-sealed bottom end, and the outer diameter of the hollow tube is smaller than the inner diameter of the oil extraction needle.
3. The plug for the insulating oil extracting needle tube according to claim 1, wherein the retainer ring is an annular body with a central through hole, the central through hole of the retainer ring is connected with one end of the needle tube plug, and a sealing sleeve is sleeved on the outer edge of the retainer ring, and the inner diameter of the sealing sleeve is larger than the outer diameter of the oil extracting needle tube.
4. The plug for an insulating oil-taking needle tube according to claim 1, wherein the non-return head is formed in an umbrella shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020724069.XU CN213669351U (en) | 2020-05-06 | 2020-05-06 | Plug for insulating oil taking needle tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020724069.XU CN213669351U (en) | 2020-05-06 | 2020-05-06 | Plug for insulating oil taking needle tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213669351U true CN213669351U (en) | 2021-07-13 |
Family
ID=76725132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020724069.XU Active CN213669351U (en) | 2020-05-06 | 2020-05-06 | Plug for insulating oil taking needle tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213669351U (en) |
-
2020
- 2020-05-06 CN CN202020724069.XU patent/CN213669351U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |