CN210778166U - Backflow-preventing oil pumping device for transformer - Google Patents
Backflow-preventing oil pumping device for transformer Download PDFInfo
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- CN210778166U CN210778166U CN201922037098.9U CN201922037098U CN210778166U CN 210778166 U CN210778166 U CN 210778166U CN 201922037098 U CN201922037098 U CN 201922037098U CN 210778166 U CN210778166 U CN 210778166U
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- oil pumping
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Abstract
The utility model provides a backflow prevention oil pumping device for a transformer, which comprises a pump shell, a connecting support arranged outside the pump shell and a piston pump arranged inside the pump shell; a braided pipe sleeve is sleeved in the pump shell, an oil pumping pipe is sleeved in the braided pipe sleeve, and a piston pump plug is matched in the oil pumping pipe; a supporting steel ring is sleeved in the oil pumping pipe below the piston pump, a supporting seat is fixed on the inner wall of the supporting steel ring, three or more hinges are arranged on the supporting seat, an elastic diaphragm is arranged on each hinge, and a mechanical spring is arranged between each elastic diaphragm and the supporting seat; the edge of the elastic membrane is provided with a sealing rubber edge; the top of the elastic membrane is also provided with a surrounding curved surface. The utility model discloses a set up the elastic diaphragm structure of placing the refluence in the oil-well pump, at the oil-well pump studio, take out the time at the vacuum and open the elastic diaphragm structure and take out the cooling oil, shut down, the cooling oil pressure resilience diaphragm structure that then refluence seals oil pipe, avoids the refluence.
Description
Technical Field
The utility model relates to the power equipment field, in particular to transformer is with preventing oil jack that flows backwards.
Background
The functions of power transformers are power transmission, voltage transformation and isolation, and are widely used in power supply technology and power electronics technology. The windings and iron cores inside the transformer are lost in the working process and converted into heat energy, so that the temperature of the transformer is increased, the performance of the transformer is affected, and the transformer needs to be cooled. The oil-immersed power transformer is cooled by oil as a cooling medium, such as oil-immersed self-cooling, oil-immersed air-cooling forced oil circulation air cooling, forced oil circulation water cooling and the like, and cooling oil is stored in an oil storage tank of the transformer in order to dissipate heat absorbed by the oil.
The cooling oil needs to be changed regularly, needs the oil-well pump to take the cooling oil in the transformer oil storage tank out this moment, and the oil-well pump of adoption is the straight-flow pipeline, and in the oil-well pump working process, meet factors such as shut down, outage, card shell suddenly, the cooling oil in the straight-flow pipe will flow back to the bin, and under the siphon effect, the cooling oil of having taken out can continue to flow back and advance the oil storage tank, has increaseed the oil pumping degree of difficulty.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a backflow prevention oil pumping device for a transformer.
The utility model provides a technical scheme is: a backflow prevention oil pumping device for a transformer comprises a pump shell, a connecting support arranged outside the pump shell and a piston pump arranged inside the pump shell; a braided pipe sleeve is sleeved in the pump shell, an oil pumping pipe is sleeved in the braided pipe sleeve, and a piston pump plug is matched in the oil pumping pipe; a supporting steel ring is sleeved in the oil pumping pipe below the piston pump, a supporting seat is fixed on the inner wall of the supporting steel ring, three or more hinges are arranged on the supporting seat, an elastic diaphragm is arranged on each hinge, and a mechanical spring is arranged between each elastic diaphragm and the supporting seat; the edge of the elastic membrane is provided with a sealing rubber edge; the top of the elastic membrane is also provided with a surrounding curved surface.
The utility model discloses a set up the elastic diaphragm structure of placing the refluence in the oil-well pump, at the oil-well pump studio, take out the time at the vacuum and open the elastic diaphragm structure and take out the cooling oil, shut down, the cooling oil pressure resilience diaphragm structure that then refluence seals oil pipe, avoids the refluence. The anti-backflow oil pumping device comprises a pump shell, a connecting support arranged outside the pump shell and a piston pump arranged inside the pump shell, wherein the connecting support is an oil pump mounting support, the piston pump is a pump plug part, and when the anti-backflow oil pumping device works, the anti-backflow oil pumping device is vacuumized to form an internal pressure difference and an external pressure difference so as to be convenient for pumping cooling oil; the pump casing is internally sleeved with a braided pipe sleeve which is a pipe sleeve with good flexibility and is used for installing and sleeving an oil pumping pipe, isolating low temperature and avoiding the temperature permeation and transmission of cooling oil; the pump plug of the piston pump is matched in the oil pumping pipe, and the elastic diaphragm structure is opened to pump cooling oil when the piston pump is vacuumized; the oil pumping pipe below the piston pump is sleeved with a supporting steel ring which is movably connected, a support seat is welded on the inner wall of the supporting steel ring and is of a vertically arranged clamping plate structure, three or more hinges are arranged on the support seat and are arranged in a centrosymmetric manner, in the embodiment, the three hinges are provided with elastic membranes, the elastic membranes have retraction performance and are in a closed state when oil is not pumped, the elastic membranes are opened by pressure difference formed by vacuum pumping during pumping, and the elastic membranes are closed by compression when cooling oil flows backwards; in order to enhance the connection stability, a mechanical spring is additionally arranged between the elastic diaphragm and the supporting seat and clamped between the elastic diaphragm and the supporting seat, so that the contraction force of the elastic diaphragm is improved; the elastic diaphragm of the utility model is of a thin sheet structure, the edge is provided with the sealing rubber edge, when the elastic diaphragm is closed, the sealing rubber edges of the adjacent elastic diaphragms are tightly laminated together under the contact pressing, and the leakage of cooling oil is further avoided; the elastic diaphragm top still is equipped with the enclosing curved surface that closes of flexible glue, encloses to close the curved surface an organic whole and locate the elastic diaphragm top, and when closing, the enclosing curved surface can enclose into and fold the structure, and the oil of refluence compresses down shutoff elastic diaphragm top.
The utility model has the beneficial technical effects that: the utility model discloses a set up the elastic diaphragm structure of placing the refluence in the oil-well pump, at the oil-well pump studio, take out the time at the vacuum and open the elastic diaphragm structure and take out the cooling oil, shut down, the cooling oil pressure resilience diaphragm structure that then refluence seals oil pipe, avoids the refluence.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of an elastomeric membrane;
in the figure, the piston pump 1, the piston pump 2, the oil pumping pipe 3, the braided pipe sleeve 4, the pump shell 5, the elastic diaphragm 6, the connecting support 7, the support seat 8, the hinge 9, the support steel ring 10, the enclosing curved surface 11 and the mechanical spring are arranged.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, the relative terms "upper", "lower", "left", "right", "inner", "outer" and other position indication positions are only based on the position shown in the drawings to simplify the description of the present invention, but not the position and structure that the components must have, and thus, the limitation of the present invention cannot be understood.
Example 1
As shown in the attached figure 1, the backflow prevention oil pumping device for the transformer comprises a pump shell 4, a connecting support 6 arranged outside the pump shell 4 and a piston pump 1 arranged inside the pump shell 4; a braided pipe sleeve 3 is sleeved in the pump shell 4, an oil pumping pipe 2 is sleeved in the braided pipe sleeve 3, and a pump plug of the piston pump 1 is matched in the oil pumping pipe 2; a supporting steel ring 9 is sleeved in the oil pumping pipe 2 below the piston pump 1, a supporting seat 7 is fixed on the inner wall of the supporting steel ring 9, three or more hinges 8 are arranged on the supporting seat 7, an elastic diaphragm 5 is arranged on each hinge 8, and a mechanical spring 11 is arranged between each elastic diaphragm 5 and the supporting seat 7; the edge of the elastic membrane 5 is provided with a sealing rubber edge; the top of the elastic membrane 5 is also provided with a surrounding curved surface 10.
The utility model discloses a set up the elastic diaphragm structure of placing the refluence in the oil-well pump, at the oil-well pump studio, take out the time at the vacuum and open the elastic diaphragm structure and take out the cooling oil, shut down, the cooling oil pressure resilience diaphragm structure that then refluence seals oil pipe, avoids the refluence. The backflow-preventing oil pumping device comprises a pump shell 4, a connecting support 6 arranged outside the pump shell 4 and a piston pump 1 arranged inside the pump shell 4, wherein the connecting support 6 is used for mounting and supporting an oil pump, the piston pump 1 is used as a pump plug part, and when the backflow-preventing oil pumping device works, the internal pressure difference and the external pressure difference are formed by pumping vacuum, so that cooling oil can be pumped conveniently; the pump shell 4 is internally sleeved with a braided pipe sleeve 3, and the braided pipe sleeve 3 is a pipe sleeve with good flexibility and used for installing and sleeving the oil pumping pipe 2, so that low temperature is isolated, and the temperature permeation and transmission of the cooling oil are avoided; the piston pump 1 is matched with the pump plug in the oil pumping pipe 2, and the elastic diaphragm structure is opened to pump cooling oil when the piston pump is vacuumized; the oil pumping pipe 2 below the piston pump 1 is sleeved with a support steel ring 9 and movably connected, a support base 7 is welded on the inner wall of the support steel ring 9 and is of a vertically arranged clamping plate structure, three or more hinges 8 are arranged on the support base 7 and are arranged in a centrosymmetric manner, in the embodiment, the number of the support steel ring is three, the hinges 8 are provided with elastic membranes 5, the elastic membranes 5 have retraction performance, when oil is not pumped, the oil is in a closed state, when the oil is pumped, the elastic membranes 5 are opened by pressure difference formed by vacuum pumping, and when cooling oil flows backwards, the oil is pressed and closed; in order to enhance the connection stability, a mechanical spring 11 is additionally arranged between the elastic diaphragm 5 and the supporting seat 7 and clamped between the elastic diaphragm 5 and the supporting seat to improve the contraction force of the elastic diaphragm 5; the elastic diaphragm 5 of the utility model is of a thin sheet structure, the edge is provided with a sealing rubber edge, when the elastic diaphragm is closed, the sealing rubber edges of the adjacent elastic diaphragms 5 are tightly laminated together under the contact pressing, thereby further avoiding the leakage of cooling oil; the top of the elastic diaphragm 5 is also provided with a surrounding curved surface 10 of soft rubber, the surrounding curved surface 10 is integrally arranged at the top of the elastic diaphragm 5, when the elastic diaphragm is closed, the surrounding curved surface 10 can form a closed structure, and the backflow oil compresses to block the top of the elastic diaphragm 5.
Further, the supporting steel ring 9 is located 150-220 mm below the piston pump 1. The volume of the cooling oil on the upper part is not too much, the distance between the supporting steel ring 9 and the piston pump 1 is limited, and in the embodiment, the supporting steel ring 9 is 180mm below the piston pump 1.
Further, the supporting steel ring 9 is sleeved in the oil pumping pipe 2 in a threaded manner. The outer surface of the supporting steel ring 9 is provided with an external thread, the inner surface of the oil pumping pipe 2 is provided with an internal thread which is connected in a matching way, and the taking and the placing are convenient.
Further, the elastic diaphragm 5 is a curved dome structure. The curved vault structure is easy to fold, is similar to a flower bud to open and close, and can be gathered.
Furthermore, the sealing rubber edge is positioned on the upper edge of the elastic membrane 5 and is of a soft protruding flanging structure. The sealed limit an organic whole is located elastic diaphragm 5 upper limb, is soft protruding turn-ups structure, and 5mm are followed to protruding elastic diaphragm 5 upper limb, closely laminate when closing and prevent the oil leak.
Obviously, the utility model discloses a set up the elastic diaphragm structure of placing the refluence in the oil-well pump, at the oil-well pump studio, take out the time at the vacuum and open the elastic diaphragm structure and take out the cooling oil, shut down, the cooling oil pressure resilience diaphragm structure that then refluence seals oil pipe, avoids the refluence.
The foregoing is a preferred embodiment of the present invention, and it should be understood that those skilled in the art can derive the related technical solutions through logic analysis, reasoning or experiment based on the present invention without creative efforts, and therefore, these related technical solutions should be within the protection scope of the present claims.
Claims (5)
1. The utility model provides a transformer is with preventing oil jack that flows backwards, includes pump case (4), locates connection strut (6) outside pump case (4) and locates piston pump (1) inside pump case (4), its characterized in that: a braided pipe sleeve (3) is sleeved in the pump shell (4), an oil pumping pipe (2) is sleeved in the braided pipe sleeve (3), and a pump plug of the piston pump (1) is matched in the oil pumping pipe (2); a supporting steel ring (9) is sleeved in the oil pumping pipe (2) below the piston pump (1), a supporting seat (7) is fixed on the inner wall of the supporting steel ring (9), three or more hinges (8) are arranged on the supporting seat (7), an elastic membrane (5) is arranged on each hinge (8), and a mechanical spring (11) is arranged between each elastic membrane (5) and the corresponding supporting seat (7); the edge of the elastic membrane (5) is provided with a sealing rubber edge; the top of the elastic membrane (5) is also provided with a surrounding curved surface (10).
2. The anti-backflow oil pumping device for the transformer according to claim 1, characterized in that: the supporting steel ring (9) is located 150-220 mm below the piston pump (1).
3. The anti-backflow oil pumping device for the transformer according to claim 2, characterized in that: the supporting steel ring (9) is sleeved in the oil pumping pipe (2) through threads.
4. The backflow-preventing oil pumping device for the transformer according to claim 1, 2 or 3, characterized in that: the elastic diaphragm (5) is of a curved arch top structure.
5. The anti-backflow oil pumping device for the transformer according to claim 4, characterized in that: the sealing rubber edge is positioned on the upper edge of the elastic membrane (5) and is of a soft protruding flanging structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922037098.9U CN210778166U (en) | 2019-11-22 | 2019-11-22 | Backflow-preventing oil pumping device for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922037098.9U CN210778166U (en) | 2019-11-22 | 2019-11-22 | Backflow-preventing oil pumping device for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210778166U true CN210778166U (en) | 2020-06-16 |
Family
ID=71049297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922037098.9U Active CN210778166U (en) | 2019-11-22 | 2019-11-22 | Backflow-preventing oil pumping device for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210778166U (en) |
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2019
- 2019-11-22 CN CN201922037098.9U patent/CN210778166U/en active Active
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