CN202513005U - Special cold pressing device for connection pipe of electric power transformer - Google Patents
Special cold pressing device for connection pipe of electric power transformer Download PDFInfo
- Publication number
- CN202513005U CN202513005U CN2011204416802U CN201120441680U CN202513005U CN 202513005 U CN202513005 U CN 202513005U CN 2011204416802 U CN2011204416802 U CN 2011204416802U CN 201120441680 U CN201120441680 U CN 201120441680U CN 202513005 U CN202513005 U CN 202513005U
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- China
- Prior art keywords
- mould
- hydraulic cylinder
- cylinder seat
- tube connector
- power transformer
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- 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 special cold pressing device for a connection pipe of an electric power transformer. The special cold pressing device comprises a mould, a mould frame, a fixing pin, a hydraulic cylinder seat and a hydraulic pump joint, wherein the mould frame is divided into an upper mould frame and a lower mould frame, the lower mould frame is arranged above the hydraulic cylinder seat, the upper mould frame is arranged above the lower mould frame and is fixedly connected with the lower mould frame through a pin bolt, the upper mould frame and the lower mould frame enclose to form a rectangular space, the inner wall of the space is provided with a turn of recess with equal width and equal depth, the mould consists of an upper mould and a lower mould, the upper mould is embedded in the groove on the inner wall of the space, the fixing pin passes through the upper mould frame and the upper mould and also fixes the upper mould, the lower mould is embedded in the groove on the inner wall of the space and is arranged on the hydraulic cylinder seat, and the hydraulic pump joint is arranged at the lower end of the hydraulic cylinder seat. The special cold pressing device disclosed by the utility model has the advantages of simple structure, lower manufacturing difficulty, safety in operation, high reliability, lower contact resistance of a joint, and qualified mechanical strength.
Description
Technical field
The utility model relates to the tube connector cold press device, and particularly a kind of power transformer is with the special-purpose cold press device of tube connector.
Background technology
In recent years; China's power industry fast development, power transformer are one of visual plant in industrial and mining enterprises and the civil buildings power supply-distribution system, and the kind model of power transformer is a lot; Wherein oil-filled transformer is relatively use always at present a kind of; This transformer need not changed oil in normal operation, greatly reduces the maintenance cost of transformer, and useful life is also long.In the production process of 35kV and above oil-filled transformer; Need the flat copper of coil be lifted one's head lead connects with the annealed copper strand wire that is connected shunting switch; Generally be to use brazing mode to connect at present, but there are many problems in this connected mode, use the soldering meeting to make the insulation of coil and lead-in wire receive certain damage; As weld overheated or provision for thermal insulation improper; Also can cause coil inside to produce indiscoverable damage, the metallic foreign body that certainly leads in welding and the scale removal process, carbide, cooling water etc. very likely pollute the device body.The mechanical strength of soldering and contact resistance are unstable, and reliability is relatively poor.
Summary of the invention
The utility model technical problem to be solved provides the special-purpose cold press device of a kind of power transformer with tube connector, and is simple in structure, manufacture difficulty is lower, handling safety, and reliability is high, makes the contact resistance of joint low, and mechanical strength meets the demands.
The utility model solves the technical scheme that its technical problem adopted: the special-purpose cold press device of a kind of power transformer with tube connector is provided; Comprise mould, mould bases, steady pin, hydraulic cylinder seat and hydraulic pump joint; Described mould bases is divided into top mold frame and following mould bases; Described down mould bases is installed in the top of hydraulic cylinder seat, and described top mold frame is placed on down the top of mould bases and is connected with following mould bases through pin and fixes, and described top mold frame and following mould bases surround the neutral area of a rectangle; The dark groove of the one wide grade of circle is arranged on the inwall of described neutral area; Described mould is made up of upper die and lower die, and described patrix is embedded in the groove of neutral area inwall, and described steady pin passes top mold frame and patrix and patrix is fixed; Described counterdie is embedded in the groove of neutral area inwall and is placed on the hydraulic cylinder seat, and described hydraulic pump joint is installed in the lower end of hydraulic cylinder seat.
The size of described upper die and lower die is identical.
Described mould comprises pressure-shaped mould and preliminary treatment mould, and the mould shape of described pressure-shaped mould is positive six distortion, and the mould shape of said preliminary treatment mould is circular.
The mould shape size of described mould and the size of tube connector match.
Beneficial effect
The utility model relates to the special-purpose cold press device of a kind of power transformer with tube connector, simple in structure, easy to operate, safety; Work efficiency is high, and cost is low, can flexible Application; Use the joint good reliability of colding pressing of this device processing; Consolidation is tight, and contact resistance is low, and mechanical strength can satisfy industry requirement.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the sketch map of the described pressure-shaped mould of the utility model;
Fig. 3 is the described preliminary treatment mould of a utility model sketch map;
Fig. 4 is the syndeton sketch map before the said cold pressing treatment of the utility model;
Fig. 5 is the syndeton sketch map after the said cold pressing treatment of the utility model;
Fig. 6 is that the A-A of the syndeton after the said cold pressing treatment of the utility model cuts open sketch map;
Fig. 7 is that the B-B of the syndeton after the said cold pressing treatment of the utility model cuts open sketch map.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction the utility model scope.Should be understood that in addition those skilled in the art can do various changes or modification to the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Shown in Fig. 1-7, the execution mode of the utility model relates to the special-purpose cold press device of a kind of power transformer with tube connector, comprises mould, mould bases, steady pin 2, hydraulic cylinder seat 4 and hydraulic pump joint 7; Described mould bases is divided into top mold frame 5 and following mould bases 6, and described mould bases down is installed in the top of hydraulic cylinder seat 4, and described top mold frame 5 is placed on down the top of mould bases 6 and is connected fixing through pin with following mould bases 6; Described top mold frame 5 and following mould bases 6 surround the neutral area of a rectangle; The dark groove of the one wide grade of circle is arranged on the inwall of described neutral area, and described mould is made up of patrix 1 and counterdie 3, and described patrix 1 is embedded in the groove of neutral area inwall; It is fixing with patrix 1 with patrix 1 that described steady pin 2 passes top mold frame 5; Described counterdie 3 is embedded in the groove of neutral area inwall and is placed on the hydraulic cylinder seat 4, and described hydraulic pump joint 7 is installed in the lower end of hydraulic cylinder seat 4, and described patrix 1 is identical with the size of counterdie 3; Described mould comprises pressure-shaped mould and preliminary treatment mould; The mould shape of described pressure-shaped mould is positive six distortion, and the mould shape of said preliminary treatment mould is circular, and the mould shape size of described mould and the size of tube connector 9 match.Concrete method for using is following, will install through hydraulic pump joint 7 to be connected on the hydraulic pump, and top mold frame 5 is taken off, and loads onto the preliminary treatment mould that matches with tube connector 9 sizes, and with steady pin 2 that patrix 1 is fixing with top mold frame 5, top mold frame 5 is installed to down on the mould bases 6 again; Move up and promote counterdie 3 and move up thereby promote oil cylinder in the hydraulic cylinder seat 4, cold pressing treatment is carried out with the preliminary treatment mould in the end of flat cable copper conductor 10 through the control hydraulic pump; Change the preliminary treatment mould on the device into match pressure-shaped mould; The pretreated end of the process of flat cable copper conductor 10 is got into tube connector 9 one ends; It is half that length accounts for pipe range; And use pressure-shaped mould that tube connector 9 is carried out cold moudling; The end of annealed copper strand wire 8 is got into the other end of tube connector 9, it is half that length accounts for pipe range, uses pressure-shaped mould that the other end of tube connector 9 is carried out cold moudling equally again
Embodiment 1
The flat cable copper conductor 10 of the coil of the oil-filled transformer of 35kV connected with the annealed copper strand wire that is connected shunting switch 8 (the sectional area size of described tube connector 9 mainly contains 25mm
2, 35mm
2, 50mm
2, 70mm
2, 95mm
2, 120mm
2, 150mm
2, 185mm
2And 240mm
2), select 50mm for use at present
2Tube connector 9, earlier cold press device is connected on the hydraulic pump through hydraulic pump joint 7, top mold frame 5 is taken off, load onto mould shape diameter dimension 50mm
2The preliminary treatment mould, and patrix 1 is fixing with top mold frame 5 with steady pin 2, again top mold frame 5 is installed to down on the mould bases 6; Move up thereby promote oil cylinder in the hydraulic cylinder seat 4 promotion counterdie 3 that moves up with the hydraulic pressure of 10t, cold pressing treatment is carried out with the preliminary treatment mould in the end of flat cable copper conductor 10 through the control hydraulic pump; Preliminary treatment mould on the device is changed into and 50mm
2The pressure-shaped mould that matches of tube connector 9; The pretreated end of the process of flat cable copper conductor 10 is got into tube connector 9 one ends; It is half that length accounts for pipe range; And use pressure-shaped mould that tube connector 9 is carried out cold moudling; The end of annealed copper strand wire 8 is got into the other end of tube connector 9, it is half that length accounts for pipe range, uses pressure-shaped mould that the other end of tube connector 9 is carried out cold moudling equally again.
Claims (4)
1. a power transformer is with the special-purpose cold press device of tube connector; Comprise mould, mould bases, steady pin (2), hydraulic cylinder seat (4) and hydraulic pump joint (7); It is characterized in that described mould bases is divided into top mold frame (5) and following mould bases (6), described mould bases down is installed in the top of hydraulic cylinder seat (4); Described top mold frame (5) is placed on down the top of mould bases (6) and is connected fixing through pin with following mould bases (6); Described top mold frame (5) and following mould bases (6) surround the neutral area of a rectangle, and the dark groove of a wide grade of circle is arranged on the inwall of described neutral area, and described mould is made up of patrix (1) and counterdie (3); Described patrix (1) is embedded in the groove of neutral area inwall; It is fixing with patrix (1) that described steady pin (2) passes top mold frame (5) and patrix (1), and described counterdie (3) is embedded in the groove of neutral area inwall and is placed on the hydraulic cylinder seat (4), and described hydraulic pump joint (7) is installed in the lower end of hydraulic cylinder seat (4).
2. a kind of power transformer according to claim 1 is characterized in that with the special-purpose cold press device of tube connector described patrix (1) is identical with the size of counterdie (3).
3. a kind of power transformer according to claim 1 is characterized in that with the special-purpose cold press device of tube connector described mould comprises pressure-shaped mould and preliminary treatment mould, and the mould shape of described pressure-shaped mould is positive six distortion, and the mould shape of said preliminary treatment mould is circular.
4. a kind of power transformer according to claim 1 is characterized in that with the special-purpose cold press device of tube connector the size of the mould shape size of described mould and tube connector (9) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204416802U CN202513005U (en) | 2011-11-09 | 2011-11-09 | Special cold pressing device for connection pipe of electric power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204416802U CN202513005U (en) | 2011-11-09 | 2011-11-09 | Special cold pressing device for connection pipe of electric power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513005U true CN202513005U (en) | 2012-10-31 |
Family
ID=47065469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204416802U Expired - Fee Related CN202513005U (en) | 2011-11-09 | 2011-11-09 | Special cold pressing device for connection pipe of electric power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202513005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403098A (en) * | 2011-11-09 | 2012-04-04 | 宁波东博电力科技有限公司 | Special cold pressing device of connection tube for power transformer and using method thereof |
-
2011
- 2011-11-09 CN CN2011204416802U patent/CN202513005U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403098A (en) * | 2011-11-09 | 2012-04-04 | 宁波东博电力科技有限公司 | Special cold pressing device of connection tube for power transformer and using method thereof |
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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: 20121031 Termination date: 20131109 |