CN111554473A - Rapid clamping device and clamping method for transformer flange - Google Patents
Rapid clamping device and clamping method for transformer flange Download PDFInfo
- Publication number
- CN111554473A CN111554473A CN202010511348.2A CN202010511348A CN111554473A CN 111554473 A CN111554473 A CN 111554473A CN 202010511348 A CN202010511348 A CN 202010511348A CN 111554473 A CN111554473 A CN 111554473A
- Authority
- CN
- China
- Prior art keywords
- pressing plate
- flange
- cylindrical pin
- plate
- lower pressing
- 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.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
Abstract
The invention relates to a quick clamping device and a clamping method for a transformer flange, and belongs to the technical field of large-scale power transformer oil tank processing. The technical scheme is as follows: the body (2) comprises a rectangular cylinder (21) and a lower pressing plate (22), the rectangular cylinder (21) is fixed on the lower pressing plate (22) to form a whole, the upper pressing plate (3) is fixed on the rectangular cylinder (21) through a butterfly nut (1) and a bolt (5), a rotation stopping cylindrical pin (4) matched with the upper pressing plate (3) is arranged on the rectangular cylinder (21), a positioning cylindrical pin (6) is arranged between the upper pressing plate (3) and the lower pressing plate (22), a pin hole matched with the positioning cylindrical pin (6) is formed in the lower pressing plate (22), and the positioning cylindrical pin (6) is fixed on the pin hole of the lower pressing plate (22). The invention has the beneficial effects that: can make things convenient for the connection of transformer flange, easy operation is swift, avoids welding to fly to splash and glues the bolt and influence the dismantlement.
Description
Technical Field
The invention relates to a quick clamping device and a clamping method for a transformer flange, and belongs to the technical field of large-scale power transformer oil tank processing.
Background
The transformer is provided with a plurality of connecting pipes which are used as oil or gas passages. The connecting pipe is connected with the connecting pipe through a pair of flanges, as shown in figure 1, one flange is provided with a sealing groove, the other flange is not provided with a sealing groove, the sealing groove is used for installing a sealing rubber gasket, and the flanges for connecting the connecting pipe are called flanges for short for the following for convenience of description. The headers are typically made by fitting. During piping, the flanges are connected and positioned by bolts (with nuts), and then the flanges and the connecting pipes are subjected to spot welding. The flange is connected through the bolt, the nut and the bolt need to be screwed together, and a special tool is needed for screwing, so that the operation efficiency is low; the bolt connecting flange has the other function of aligning the flange hole, and the flange is difficult to assemble in the future due to the fact that the fit clearance between the bolt and the flange hole is large and the positioning precision of the flange hole is poor; in addition, for the flange with a smaller diameter, because the bolt is close to the connecting pipe, when the flange and the connecting pipe are spot-welded, splashing is easy to adhere to the thread of the bolt, so that the nut on the bolt cannot be loosened and detached, the bolt needs to be cut off by gas cutting, the production efficiency is seriously influenced, and the waste of the bolt is caused.
Disclosure of Invention
The invention aims to provide a quick clamping device and a clamping method for a transformer flange, which are simple and quick to operate, avoid welding spatters from adhering to bolts to affect disassembly, and solve the problems in the background art.
The technical scheme of the invention is as follows:
the utility model provides a quick clamping device of transformer flange, contains butterfly nut, body, top board, splines cylindric lock, bolt and location cylindric lock, the body contains rectangle cylinder and holding down plate, and the rectangle cylinder is fixed and constitutes a whole on the holding down plate, and the top board passes through butterfly nut and bolt fastening on the rectangle cylinder, is equipped with on the rectangle cylinder with top board matched with splines cylindric lock, is equipped with the location cylindric lock between top board and the holding down plate, be equipped with on the holding down plate with location cylindric lock assorted pinhole, the location cylindric lock is fixed on the pinhole of holding down plate.
The rectangular cylinder is provided with a blind hole matched with the rotation stopping cylindrical pin, and the rotation stopping cylindrical pin is arranged in the blind hole of the rectangular cylinder.
The lower pressing plate is rectangular, the upper surface of the rectangular cylinder is higher than that of the lower pressing plate, and the height difference between the lower pressing plate and the rectangular cylinder is 1-2 mm smaller than the thickness of the transformer flange.
The upper pressing plate and the lower pressing plate are arranged in parallel up and down.
A quick clamping method of a transformer flange adopts the defined quick clamping device and comprises the following steps:
rotating an upper pressure plate to enable the upper pressure plate to rotate along a bolt until a positioning cylindrical pin between the upper pressure plate and a lower pressure plate is exposed;
secondly, inserting the positioning cylindrical pin into the flange hole of the transformer;
and thirdly, rotating the upper pressing plate in the opposite direction to press the upper pressing plate on the positioning cylindrical pin, and screwing the butterfly nut to realize quick clamping of the connecting pipe flange.
The invention has the beneficial effects that: can make things convenient for the connection of transformer flange, easy operation is swift, avoids welding to fly to splash and glues the bolt and influence the dismantlement.
Drawings
FIG. 1 is a schematic view of a prior art flange connection;
FIG. 2 is an exploded view of the device of the present invention;
FIG. 3 is a schematic view of the open state of the present invention;
FIG. 4 is a schematic view of the closed state of the present invention;
FIG. 5 is a schematic view of the present invention in use;
in the figure: butterfly nut 1, body 2, top board 3, spline round pin 4, bolt 5, location round pin 6, rectangular cylinder 21, holding down plate 22.
Detailed Description
The invention is further illustrated by way of example in the following with reference to the accompanying drawings.
Referring to the attached drawings 1-5, the quick clamping device for the transformer flange comprises a butterfly nut 1, a body 2, an upper pressing plate 3, a rotation stopping cylindrical pin 4, a bolt 5 and a positioning cylindrical pin 6, wherein the body 2 comprises a rectangular cylinder 21 and a lower pressing plate 22, the rectangular cylinder 21 is fixed on the lower pressing plate 22 to form a whole, the upper pressing plate 3 is fixed on the rectangular cylinder 21 through the butterfly nut 1 and the bolt 5, the rotation stopping cylindrical pin 4 matched with the upper pressing plate 3 is arranged on the rectangular cylinder 21, the positioning cylindrical pin 6 is arranged between the upper pressing plate 3 and the lower pressing plate 22, a pin hole matched with the positioning cylindrical pin 6 is arranged on the lower pressing plate 22, and the positioning cylindrical pin 6 is fixed on the pin hole of the lower pressing plate 22.
In this embodiment, referring to fig. 1 to 5, the body 2 is composed of a rectangular cylinder 21 and a lower pressing plate 22, and is an integral piece, the rectangular cylinder 21 is located at the left side of the body 2 and bears bending moment and tension force during clamping, a vertical through hole is processed at the right side of the rectangular cylinder 21 and is used for passing through the bolt 5, a vertical pin hole is processed at the upper side of the left side of the rectangular cylinder 21, the pin hole is a blind hole and is used for installing the rotation-stopping cylindrical pin 4, and the pin hole is in interference fit with the rotation-stopping cylindrical pin 4; the lower pressing plate 22 is located on the right side of the body 2 and is of a rectangular plate structure and used for clamping a flange, and a vertical pin hole is machined in the right side of the lower pressing plate 22 and used for installing and positioning a cylindrical pin 6. The locating cylindrical pin 6 is inserted into the pin hole of the lower pressing plate 22 from top to bottom, the lower end of the pin hole is connected with the lower pressing plate 22 through plug welding, the height of the locating cylindrical pin 6 is 2mm smaller than the thickness of the flange, the influence on the clamping of the flange is avoided, the matching precision of the locating cylindrical pin 6 and the flange hole is higher than the matching of the bolt and the flange hole, and therefore the locating precision of the locating cylindrical pin 6 to the flange hole is high. The upper surface of the rectangular cylinder 21 is higher than that of the lower pressing plate 22 on the right side of the rectangular cylinder, and the height difference between the upper surface and the lower surface is 1-2 mm smaller than the thickness of the flange so as to ensure that the flange is clamped. The upper pressing plate 3 is located above the body 2 and used for clamping a flange, and a through hole is formed in the left side of the upper pressing plate 3 and used for a bolt 5 to penetrate through. The body 2 is connected with the upper pressure plate 3 through a bolt 5, a butterfly nut 1 is arranged at the lower end of the bolt 5, and the flange can be clamped or loosened between the upper pressure plate 3 and the lower pressure plate 22 by screwing or loosening the butterfly nut 1. The upper pressing plate 3 and the body 2 can rotate relatively, when the upper pressing plate 3 rotates clockwise (from top to bottom) to reach the limit position of the rotation stopping cylindrical pin 4, the upper pressing plate 3 and the lower pressing plate 22 form an angle of 90 degrees, the position state is called an open state, as shown in fig. 3, the clamping device can be detached from the flange or mounted on the flange in the open state; when the upper press plate 3 rotates anticlockwise to reach the limit of the rotation stopping cylindrical pin 4, the upper press plate 3 and the lower press plate 22 are overlapped up and down, the position state is called as the closing state of the clamping device, as shown in fig. 4, the flange hole is just covered by the upper press plate 3 and the lower press plate 22 in the closing state, and welding spatter can be prevented from entering the hole to influence the disassembly of the tool. The distance between the upper pressing plate 3 and the lower pressing plate 22 is slightly larger than the thickness of the flange, and the flange can be clamped quickly by tightening the butterfly nut 1. Since the bolt 5 is far away from the union pipe, welding spatters can be prevented from adhering to the thread of the bolt. The device solves the problem of the bolted flange, and is simple and rapid to operate.
The use method of the device comprises the following steps: the upper press plate 3 rotates clockwise by 90 degrees, exposing the positioning cylindrical pin 6 between the upper press plate 3 and the lower press plate 22, as shown in fig. 3; inserting the positioning cylindrical pin 6 into the flange hole, then rotating the upper pressure plate 3 anticlockwise until the upper pressure plate and the lower pressure plate 22 are vertically overlapped, and properly loosening the butterfly nut 1 as shown in fig. 4 when the distance between the upper pressure plate 3 and the lower pressure plate 22 is small; and finally, screwing the butterfly nut 1 to realize the quick clamping of the pipe connecting flange, as shown in figure 5.
Claims (5)
1. The utility model provides a quick clamping device of transformer flange which characterized in that: contain butterfly nut (1), body (2), top board (3), spline cylindric lock (4), bolt (5) and location cylindric lock (6), body (2) contain rectangle cylinder (21) and holding down plate (22), and rectangle cylinder (21) are fixed and are constituted a whole on holding down plate (22), and top board (3) are fixed on rectangle cylinder (21) through butterfly nut (1) and bolt (5), are equipped with on rectangle cylinder (21) and hold down plate (3) matched with spline cylindric lock (4), are equipped with between top board (3) and holding down plate (22) location cylindric lock (6), be equipped with on holding down plate (22) with location cylindric lock (6) assorted pinhole, location cylindric lock (6) are fixed on the pinhole of holding down plate (22).
2. The quick clamping device of transformer flange of claim 1, characterized in that: the rectangular cylinder (21) is provided with a blind hole matched with the rotation stopping cylindrical pin (4), and the rotation stopping cylindrical pin (4) is arranged in the blind hole of the rectangular cylinder (21).
3. The quick clamping device of transformer flange of claim 1, characterized in that: the lower pressing plate (22) is rectangular, the upper surface of the rectangular cylinder (21) is higher than that of the lower pressing plate (22), and the height difference between the lower pressing plate and the rectangular cylinder is 1-2 mm smaller than the thickness of the transformer flange.
4. The quick clamping device of transformer flange of claim 1, characterized in that: the upper pressing plate (3) and the lower pressing plate (22) are arranged in parallel up and down.
5. A method for quickly clamping a transformer flange is characterized by comprising the following steps: use of a quick clamping device as defined in any one of claims 1 to 4, operating according to the following steps:
firstly, rotating an upper pressure plate (3) to enable the upper pressure plate (3) to rotate along a bolt (5) until a positioning cylindrical pin (6) between the upper pressure plate (3) and a lower pressure plate (22) is exposed;
secondly, inserting the positioning cylindrical pin (6) into a flange hole of the transformer;
and thirdly, rotating the upper pressing plate (3) in the opposite direction to press the upper pressing plate (3) on the positioning cylindrical pin (6), and screwing the butterfly nut (1) to realize the quick clamping of the connecting pipe flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010511348.2A CN111554473A (en) | 2020-06-08 | 2020-06-08 | Rapid clamping device and clamping method for transformer flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010511348.2A CN111554473A (en) | 2020-06-08 | 2020-06-08 | Rapid clamping device and clamping method for transformer flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111554473A true CN111554473A (en) | 2020-08-18 |
Family
ID=72008762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010511348.2A Pending CN111554473A (en) | 2020-06-08 | 2020-06-08 | Rapid clamping device and clamping method for transformer flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111554473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927136A (en) * | 2021-11-18 | 2022-01-14 | 沪东中华造船(集团)有限公司 | Argon arc welding device and method for nonferrous metal pipe with collar or flange |
-
2020
- 2020-06-08 CN CN202010511348.2A patent/CN111554473A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927136A (en) * | 2021-11-18 | 2022-01-14 | 沪东中华造船(集团)有限公司 | Argon arc welding device and method for nonferrous metal pipe with collar or flange |
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