CN219916841U - Short-circuit rod oil filtering device of alternating current/direct current dual-purpose test transformer - Google Patents
Short-circuit rod oil filtering device of alternating current/direct current dual-purpose test transformer Download PDFInfo
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- CN219916841U CN219916841U CN202320923991.5U CN202320923991U CN219916841U CN 219916841 U CN219916841 U CN 219916841U CN 202320923991 U CN202320923991 U CN 202320923991U CN 219916841 U CN219916841 U CN 219916841U
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000001914 filtration Methods 0.000 title claims abstract description 29
- 238000004891 communication Methods 0.000 claims description 17
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005457 optimization Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a shorting bar oil filtering device of an alternating current-direct current dual-purpose test transformer, which comprises a first connector, an oil filtering cushion block and a second connector, wherein the first connector is connected with the shorting bar; the first connector is used for connecting a connecting screw sleeve which is preset at the top end of the test transformer and used for connecting a short-circuit rod; the second connector is used for connecting the short-circuit rod, is equipped with between first connector and second connector the oil filter cushion is used for when extracting the short-circuit rod, oil filter cushion cleans the oil of short-circuit rod lateral wall. The utility model avoids the leakage of the transformer oil by plugging and unplugging the short connecting rod, also avoids the pollution caused by the leakage of the transformer oil, and has low cost and convenient use.
Description
Technical Field
The utility model belongs to the technical field of power construction, relates to the field of test transformer equipment, and particularly relates to a shorting bar oil filtering device of an alternating current-direct current dual-purpose test transformer.
Background
The high-voltage test transformer is a common test device for checking the insulation strength of high-voltage electrical equipment. After the high-voltage electric equipment such as high-voltage cables and electrical cabinets are installed and debugged or the characteristics are tested, the general high-voltage test transformer is required to be tested to judge whether the electric equipment is qualified or not. An ac/dc dual-purpose test transformer is shown in chinese patent document with publication number CN201893223U, CN 202394681U. Wherein the shorting bar is a key component for switching direct current or alternating current. When the short-circuit rod is pulled out, the test transformer outputs direct current; when the shorting bar is inserted into the test transformer, alternating current is output.
In practice, there are often a variety of electrical devices that need to be tested. The short-circuit rod is frequently inserted and pulled out, and oil in the transformer can be brought out each time the short-circuit rod is inserted and pulled out. First, oil stains easily contaminate test transformers or other equipment; and secondly, the oil quantity carried out by the shorting bar is equal to the oil quantity leaked by the test transformer, so that the oil level in the test transformer can be lowered after long-time use, and the fault risk exists.
Disclosure of Invention
In order to overcome the defects in the background technology, the utility model provides a short-circuit rod oil filtering device of an alternating current-direct current dual-purpose test transformer, which aims to reduce leakage and greasy dirt pollution by installing the oil filtering device on a connecting screw sleeve 5 used for connecting the short-circuit rod on the test transformer and filtering oil attached to the side wall of the short-circuit rod.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a short-circuit rod oil filtering device of an alternating current-direct current dual-purpose test transformer comprises a first connector, an oil filtering cushion block and a second connector; the lower end of the first connector is provided with a threaded joint; the threaded connector can be screwed into a connecting screw sleeve preset at the top end of the test transformer and used for connecting a short-circuit rod; a groove is formed in the middle of the upper surface of the first connector; the oil filtering pad block is clamped and embedded in the groove; a communication hole is formed in the center of the threaded joint; the top end of the communication hole is communicated with the groove; the second connector is propped against the upper surface of the first connector and is detachably connected with the first connector; a threaded through hole is formed in the middle of the second connecting body and is used for being in threaded connection with an external threaded section preset at the upper part of the short connecting rod; an insertion hole is formed in the middle of the oil filtering pad block; the short connecting rod can sequentially penetrate through the threaded through hole, the jack, the groove and the communication hole from top to bottom, and the inner wall of the jack is in close contact with the side wall of the short connecting rod, so that when the short connecting rod is pulled out, the oil filtering pad wipes oil on the side wall of the short connecting rod.
As a further refinement, the first connection body and the second connection body are detachably connected by means of a screw part.
As a further optimization, the first connecting body is provided with screw holes; the second connector is provided with a countersunk connecting hole corresponding to the screw hole; the bolt component is a countersunk head screw, and is used for connecting the first connector with the second connector when the lower end of the countersunk head screw penetrates through the countersunk head connecting hole and then is screwed in the screw hole.
As a further optimization, the number of the screw holes on the first connector is two, and the screw holes are distributed symmetrically left and right by taking the axis of the communication hole as a reference; correspondingly, the second connector is provided with two countersunk head connecting holes for connecting the two countersunk head screws.
As a further optimization, at least one of the first connector and the second connector has a non-circular cross-sectional profile; the cross section is a tangential plane perpendicular to the axis of the communication hole.
As a further refinement, the first connector and the second connector each have an elliptical cross-sectional profile.
As further optimization, the oil filtering cushion block is a cotton cloth block or a rubber block.
The utility model has the beneficial effects that:
the device avoids leakage of the transformer oil through plugging and unplugging of the short connecting rod, also avoids pollution caused by leakage of the transformer oil, and has low cost and convenient use.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
fig. 2 is a schematic cross-sectional structure of embodiment 1 of the present utility model.
In the figure: the novel oil filter comprises a first connector, a threaded connector 11, a groove 12, a communication hole 13, a screw hole 14, an oil filter cushion block 2, a jack 21, a second connector 3, a threaded through hole 31, a countersunk connecting head 32, a countersunk screw 33, a short connecting rod 4, an external threaded section 41, a screwing head 42 and a connecting screw sleeve 5.
Detailed Description
The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments thus described are only some, but not all, of the preferred embodiments of the present utility model. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
Example 1: please refer to fig. 1-2;
the utility model provides the following technical scheme: a shorting bar oil filter device of an alternating current-direct current dual-purpose test transformer is applied to the alternating current-direct current dual-purpose test transformer and comprises a first connector 1, an oil filter pad block 2 and a second connector 3; the lower end of the first connector 1 is provided with a screwed joint 11; the threaded joint 11 can be screwed in a connecting screw sleeve 5 which is preset at the top end of the test transformer and is used for connecting the short connecting rod 4; a groove 12 is arranged in the middle of the upper surface of the first connector 1; the oil filtering pad block 2 is clamped and embedded in the groove 12; a communication hole 13 is arranged in the center of the threaded joint 11; the top end of the communication hole 13 is communicated with the groove 12; the second connector 3 is abutted against the upper surface of the first connector 1 and is detachably connected with the first connector 1; a threaded through hole 31 is formed in the middle of the second connector 3 and is used for being in threaded connection with an external threaded section 41 preset at the upper part of the shorting bar 4; an insertion hole 21 is formed in the middle of the oil filtering pad block 2; the shorting bar 4 may sequentially penetrate through the threaded through hole 31, the jack 21, the groove 12, and the communication hole 13 from top to bottom, and the inner wall of the jack 21 is in close contact with the sidewall of the shorting bar 4, so that when the shorting bar 4 is pulled out, the oil filtering pad 2 wipes the oil on the sidewall of the shorting bar 4.
When in use, the first connector 1 is firstly connected in the connecting screw sleeve 5 through the threaded joint 11; then the oil filtering cushion block 2 is inserted into the groove 12, then the second connector 3 is covered on the upper surface of the first connector 1, and the first connector 1 and the second connector 3 are fixedly connected into a whole by the bolt component; finally, the short connecting rod 4 is inserted, penetrates through the threaded through hole 31, the jack 21, the groove 12 and the communicating hole 13 in sequence and then enters the test transformer. When direct current is required to be output, the screwing head 42 at the upper end of the short connecting rod 4 is rotated, and when the external thread section 41 is pulled out after being connected with the threaded through hole 31, the inner wall of the jack 21 is tightly contacted with the side wall of the short connecting rod 4 to wipe oil on the side wall of the short connecting rod 4, and redundant oil flows back into the test transformer through the communication hole 13 after being accumulated on the filtrate cushion block.
Thereby, on the one hand, leakage of the transformer oil through the short connecting rod 4 is avoided, and on the other hand, pollution caused by leakage of the transformer oil is avoided.
It should be noted that, the first connector 1 and the second connector 3 are both conductive metal components, so as to compare with the case that the short connecting rod 4 is directly connected in the connecting screw sleeve 5, and the oil filtering cushion block 2 is a cotton cloth block or a rubber block. Second, the length of the short connecting rod 4 is correspondingly adjusted to meet the working requirement of the short connecting rod due to the addition of the first connecting body 1 and the second connecting body 3.
Wherein, the first connector 1 and the second connector 3 can be detachable by means of fastening, screwing, etc. Preferably, the first connector 1 and the second connector 3 are detachably connected by a bolt member. The bolt part can be connected by matching the bolt with the nut, but the nut is easy to lose in the disassembly and assembly process, and the use is inconvenient. The embodiment is further optimized that the first connecting body 1 is provided with a screw hole 14 with threads; the second connector 3 is provided with a countersunk head connecting hole 32 corresponding to the screw hole 14; the bolt member is a countersunk head screw 33 for connecting the first connector 1 with the second connector 3 when the lower end of the countersunk head screw 33 is screwed into the screw hole 14 after passing through the countersunk head connecting hole 32. The greater the number of countersunk screws 33, the more firmly the first connector 1 is connected to the second connector 3, and illustratively, the two screw holes 14 on the first connector 1 are symmetrically distributed on the left and right with the communication hole 13 as a reference; correspondingly, the second connector 3 has two countersunk head connecting holes 32 for connecting the two countersunk head screws 33, so that the connector is firm and reliable.
Example 2: please refer to fig. 1-2;
this embodiment differs from embodiment 1 in that, when the shorting bar 4 is pulled out, it can only be adapted to lie flat due to its slim profile. But the flat shorting bars 4 are prone to dust contact. When the short bar 4 contaminated with dust and impurities is reinserted into the transformer, transformer oil is contaminated. To avoid this, at least one of the first connector 1 and the second connector 3 has a non-circular cross-sectional profile; the cross section is a tangential plane perpendicular to the axis of the communication hole 13.
In use, compared with embodiment 1, after the connection between the external thread section 41 and the threaded through hole 31 is released, the first connector 1 is screwed, so that the connection assembly composed of the first connector 1, the oil filter pad 2 and the second connector 3 is removed from the connection screw sleeve 5. When the short connecting rod 4 is horizontally placed, the connecting component is sleeved on the short connecting rod 4 to serve as a supporting object, the short connecting rod 4 is supported to be suspended, contact with dust is avoided, and the long and thin short connecting rod 4 is prevented from rolling due to the fact that the connecting component has a non-circular cross section outline, and the long and thin short connecting rod is placed stably and reliably.
More preferably, the first connector 1 and the second connector 3 each have an oval cross-sectional profile. The connecting assembly has the function of preventing rolling, and meanwhile, the edges and corners are eliminated, so that hands of operators are prevented from being scratched.
The utility model has not been described in detail in the prior art; it should be understood by those skilled in the art that any combination of the features of the foregoing embodiments may be adopted, and that all possible combinations of the features of the foregoing embodiments are not described for brevity of description, however, such combinations are not to be considered as a contradiction between the features. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. A short circuit pole oil filter device of alternating current-direct current dual-purpose test transformer, its characterized in that: comprises a first connector (1), an oil filtering pad block (2) and a second connector (3); the lower end of the first connecting body (1) is provided with a threaded joint (11); the threaded connector (11) can be screwed into a connecting screw sleeve (5) which is preset at the top end of the test transformer and is used for connecting the short connecting rod (4); a groove (12) is formed in the middle of the upper surface of the first connecting body (1); the oil filtering pad block (2) is clamped in the groove (12); a communication hole (13) is arranged in the center of the threaded joint (11); the top end of the communication hole (13) is communicated with the groove (12);
the lower surface of the second connector (3) is abutted against the upper surface of the first connector (1) and is detachably connected with the first connector (1);
a threaded through hole (31) is formed in the middle of the second connecting body (3) and is used for being in threaded connection with an external threaded section (41) preset at the upper part of the short connecting rod (4);
an insertion hole (21) is formed in the middle of the oil filtering pad block (2);
the short circuit rod (4) can sequentially penetrate through the threaded through hole (31), the jack (21), the groove (12) and the communication hole (13) from top to bottom, and the inner wall of the jack (21) is in close contact with the side wall of the short circuit rod (4), so that when the short circuit rod (4) is pulled out, the oil filtering pad block (2) wipes oil on the side wall of the short circuit rod (4).
2. The shorting bar oil filtering device of the ac/dc dual-purpose testing transformer according to claim 1, wherein: the first connector (1) is detachably connected with the second connector (3) through a bolt component.
3. The shorting bar oil filtering device of the ac/dc dual-purpose testing transformer according to claim 2, wherein: the first connector (1) is provided with a screw hole (14); a countersunk head connecting hole (32) corresponding to the screw hole (14) is formed in the second connecting body (3); the bolt component is a countersunk head screw (33) and is used for connecting the first connector (1) with the second connector (3) when the lower end of the countersunk head screw (33) passes through the countersunk head connecting hole (32) and is screwed in the screw hole (14).
4. The shorting bar oil filter device of the ac/dc dual-purpose testing transformer according to claim 3, wherein: two screw holes (14) are formed in the first connecting body (1), and are symmetrically distributed on the left and right with the axis of the communication hole (13) as a reference; correspondingly, the number of the countersunk head connecting holes (32) of the second connecting body (3) is two.
5. The shorting bar oil filtering device of the ac/dc dual-purpose testing transformer according to claim 4, wherein: at least one of the first connecting body (1) and the second connecting body (3) has a non-circular cross-sectional profile; the cross section is a tangential plane perpendicular to the axis of the communication hole (13).
6. The shorting bar oil filtering device of the ac/dc dual-purpose testing transformer according to claim 5, wherein: the first connector (1) and the second connector (3) each have an oval cross-sectional profile.
7. The shorting bar oil filtering device of the ac/dc dual-purpose testing transformer according to claim 1, wherein: the oil filtering pad block (2) is a cotton cloth block or a rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320923991.5U CN219916841U (en) | 2023-04-23 | 2023-04-23 | Short-circuit rod oil filtering device of alternating current/direct current dual-purpose test transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320923991.5U CN219916841U (en) | 2023-04-23 | 2023-04-23 | Short-circuit rod oil filtering device of alternating current/direct current dual-purpose test transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219916841U true CN219916841U (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320923991.5U Active CN219916841U (en) | 2023-04-23 | 2023-04-23 | Short-circuit rod oil filtering device of alternating current/direct current dual-purpose test transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219916841U (en) |
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2023
- 2023-04-23 CN CN202320923991.5U patent/CN219916841U/en active Active
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