CN202155722U - Fixture for processing heat exchanging holes of tube plates of condensers of turbines - Google Patents
Fixture for processing heat exchanging holes of tube plates of condensers of turbines Download PDFInfo
- Publication number
- CN202155722U CN202155722U CN201120259731XU CN201120259731U CN202155722U CN 202155722 U CN202155722 U CN 202155722U CN 201120259731X U CN201120259731X U CN 201120259731XU CN 201120259731 U CN201120259731 U CN 201120259731U CN 202155722 U CN202155722 U CN 202155722U
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- tube sheet
- hole
- rotary
- diameter
- holes
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Abstract
The utility model relates to a fixture for processing heat exchanging holes of tube plates of condensers of turbines. The fixture aims to solve problems that an existing fixture for processing heat exchanging holes of tube plates of condensers of turbines has small supporting area, vibration is caused frequently during processing, and processing quality of tube holes is degraded. A plurality of supporting blocks and two limiting seats are fixedly connected onto a rectangular bottom plate, a bent press plate is disposed on each supporting block, double-head screws are mounted in connecting holes of the bent press plates, lower ends of the double-head screws are fixedly connected with the rectangular bottom plate in a threaded manner, upper ends of the double-head screws are connected with nuts in a threaded manner, the bent press plates are used for pressing a tube plate, the rectangular bottom plate is limited in the length direction by the two limiting seats, externally threaded rods on tube plate supporting parts are connected with positioning screw holes on the rectangular bottom plates in a threaded manner, connecting bolts penetrate through connecting holes on the tube plate to be connected with internally threaded holes on the tube plate supporting parts in a threaded manner, and positioning washers are mounted on the connecting bolts. The fixture is used for clamping and positioning when the heat exchanging holes of the tube plates of the condensers of the turbines are processed.
Description
Technical field
The utility model relates to a kind of turbine condenser tube sheet fixture for processing, belongs to the Machining Technology field.
Background technology
The arrangement mode in turbine condenser tube sheet heat exchange hole is an equilateral triangle; The mode that existing heat exchange hole fixture for processing utilizes a plurality of equilateral triangles to support usually supports; Because Area of bearing is little, cause that vibration often appears in tube sheet in the process of heat exchange hole, reduce the crudy in heat exchange hole; The bridge size surpasses the scope of drawing size tolerance requirements, the local problem that is prone to produce distortion of tube sheet.
The utility model content
The purpose of the utility model provides a kind of turbine condenser tube sheet heat exchange hole fixture for processing; Adopt the mode of a plurality of equilateral triangles supports to support to solve existing turbine condenser tube sheet heat exchange hole fixture for processing; Because Area of bearing is little, cause that vibration often appears in tube sheet in the process of heat exchange hole, reduce the crudy in heat exchange hole; The bridge size surpasses the scope of drawing size tolerance requirements, the local problem that is prone to produce distortion of tube sheet.
These anchor clamps can directly use on the high-speed numeric control bull is bored and process the heat exchange hole on the tube sheet, guarantee the bridge of designing requirement and avoid tube sheet distortion to occur.
The utility model is to address the above problem the technical scheme of taking to be: the turbine condenser tube sheet heat exchange hole fixture for processing of the utility model, said anchor clamps comprise rectangle base plate, two limit bases, a plurality of connecting bolt, a plurality of space washer, a plurality of tube sheet support member, a plurality of elbow pressing plate, a plurality of double threaded screw, a plurality of nut and a plurality of back-up blocks; The lower end of each tube sheet support member is provided with external thread rod; The center of the upper end of each tube sheet support member is processed with axial shoulder hole; The inboard in this axial shoulder hole is processed with and the coaxial internal thread hole in said axial shoulder hole; Be processed with the air vent that communicates with said axial shoulder hole on the lateral wall of each tube sheet support member, a termination near width on the upper surface of rectangle base plate is provided with two limit bases, on the upper surface of rectangle base plate near each places a plurality of back-up blocks respectively near another termination of width on the upper surface of the both sides of two length directions and rectangle base plate; Each back-up block is provided with an elbow pressing plate; A double threaded screw is housed in the connecting hole of each elbow pressing plate, and the lower end of this double threaded screw and rectangle base thread are affixed, and the upper end of this double threaded screw is connected with corresponding nut thread; A plurality of elbow pressing plates are used to compress tube sheet; Be processed with a plurality of positioning screw holes on the upper surface of rectangle base plate, a plurality of tube sheet support members and a plurality of positioning screw hole are corresponding one by one to be provided with, and the external thread rod of each tube sheet support member is threaded with positioning screw hole on the corresponding rectangle base plate; Be processed with a plurality of connecting holes on the tube sheet; The connecting hole that a plurality of connecting holes and the corresponding one by one setting in a plurality of axial shoulders hole, each connecting bolt pass on the tube sheet is threaded with internal thread hole on the tube sheet support member, and the location space washer is housed on each connecting bolt.
The beneficial effect of the utility model is: the anchor clamps of the utility model can increase the Area of bearing of tube sheet through the tube sheet support member; The tube sheet good stability; The bridge size is in the scope of drawing size tolerance requirements; The tube sheet difficult local produces distortion, realizes the rapid-mounted tube sheet, guarantees the crudy in tube sheet heat exchange hole.
Description of drawings
Fig. 1 is the integrally-built front view of the utility model, and Fig. 2 is the vertical view of Fig. 1, and nut, connecting bolt and double threaded screw are not represented among the figure, and Fig. 3 is the A portion enlarged drawing of Fig. 1.
The specific embodiment
The specific embodiment one: combine Fig. 1-Fig. 3 explanation; The turbine condenser tube sheet heat exchange hole fixture for processing of this embodiment, said anchor clamps comprise rectangle base plate 5, two limit bases 1, a plurality of connecting bolt 2, a plurality of space washer 3, a plurality of tube sheet support member 4, a plurality of elbow pressing plate 6, a plurality of double threaded screw 8, a plurality of nut 10 and a plurality of back-up blocks 9; The lower end of each tube sheet support member 4 is provided with external thread rod 4-1; The center of the upper end of each tube sheet support member 4 is processed with axial shoulder hole 4-2; The inboard of this axial shoulder hole 4-2 is processed with the coaxial internal thread hole with said axial shoulder hole 4-2; Be processed with the air vent 4-3 that communicates with said axial shoulder hole 4-2 on the lateral wall of each tube sheet support member 4; A termination near width on the upper surface of rectangle base plate 5 is provided with two limit bases 1; On the upper surface of rectangle base plate 5 near each places a plurality of back-up blocks 9 respectively near another termination of width on the upper surface of the both sides of two length directions and rectangle base plate 5; Each back-up block 9 is provided with an elbow pressing plate 6, and a double threaded screw 8 is housed in the connecting hole of each elbow pressing plate 6, and the lower end of this double threaded screw 8 and rectangle base plate 5 screw threads are affixed; The upper end of this double threaded screw 8 is threaded with corresponding nut 10; A plurality of elbow pressing plates 6 are used to compress tube sheet 11 (two limit bases 1 are used to limit limit, tube sheet 11 widths place and keep concordant, and are the programming starting point of whole tube sheet heat exchange hole program), are processed with a plurality of positioning screw holes on the upper surface of rectangle base plate 5; A plurality of tube sheet support members 4 are provided with a plurality of positioning screw holes are corresponding one by one; The external thread rod 4-1 of each tube sheet support member 4 is threaded with positioning screw hole on the corresponding rectangle base plate 5, is processed with a plurality of connecting hole 11-1 on the tube sheet 11, a plurality of connecting hole 11-1 and the corresponding one by one setting of a plurality of axial shoulder hole 4-2; The connecting hole 11-1 that each connecting bolt 2 passes on the tube sheet 11 is threaded with internal thread hole on the tube sheet support member 4, and location space washer 3 (preventing the end face of damage tube sheet 11 when fastening) is housed on each connecting bolt 2.
The specific embodiment two: combine Fig. 1 and Fig. 3 explanation, each tube sheet support member 4 of this embodiment is processed the first cylinder 4-4 of one, the first Rotary-table 4-5, the second cylinder 4-6, the second Rotary-table 4-7, three cylindrical body 4-8 and external thread rod 4-1 from top to bottom and is formed; The external diameter of the first cylinder 4-4 is less than the diameter of the first Rotary-table 4-5 upper surface; The diameter of the first Rotary-table 4-5 upper surface is less than the diameter of the first Rotary-table 4-5 lower surface; The diameter of the first Rotary-table 4-5 lower surface equates with the external diameter of the second cylinder 4-6; The upper surface diameter of the second Rotary-table 4-7 equates with the external diameter of the second cylinder 4-6; The upper surface diameter of the second Rotary-table 4-7 is less than the lower surface diameter of the second Rotary-table 4-7, and the lower surface diameter of the second Rotary-table 4-7 equates that with the external diameter of three cylindrical body 4-8 the external diameter of external thread rod 4-1 is less than the external diameter of three cylindrical body 4-8.This kind design contrast is supported in the equilateral triangle central design, and support is equivalent to increase 9 times with the contact area of tube sheet 11.Other is identical with the specific embodiment one.
The specific embodiment three: combine Fig. 2 explanation, two limit bases 1 of this embodiment are symmetrical set with respect to the center line of the length direction of rectangle base plate 5.Design like this, an end of assurance tube sheet 11 is in concordant, good positioning effect.Other is identical with the specific embodiment one or two.
The specific embodiment four: combine Fig. 1 and Fig. 3 explanation, the lower end of the space washer 3 of this embodiment is provided with boss 3-1, and the boss 3-1 of space washer 3 is arranged in the connecting hole 11-1 of tube sheet 11.Design can guarantee that tube sheet 11 is pressed on the tube sheet support member 4 like this.Other is identical with the specific embodiment one or two.
During use; Rectangle base plate 5 is fixed on the platen 12; Again limit base 1 is installed on the rectangle base plate 5; With the axis G of a limit base 1 in two limit bases 1 " 0 " point, on rectangle base plate 5, bore the positioning screw hole of attacking tube sheet support member 4 usefulness by the heat exchange hole that tube sheet 11 porose area distribution maps are selected as program.Tube sheet support member 4 is threaded with rectangle base plate 5 positioning screw holes; Adopt the milling function of lathe to remove the high point on the tube sheet support member 4; Guarantee that all tube sheet support members 4 are on the same horizontal plane, tube sheet 11 is installed on the tube sheet support member 4, guarantee that an end of tube sheet 11 closely contacts with two limit bases 1; Periphery at tube sheet 11 adopts elbow pressing plate 6, nut 10 and back-up block 9 to be fixed; With the axis G of limit base 1 " 0 " point as program, press the axial shoulder hole 4-2 and the air vent 4-3 of size drilling pipe plate support 4 usefulness in tube sheet heat exchange hole, boring (starts high-speed numeric control multiple-drilling machine bed; Adopting special-purpose U to bore) space washer 3 that will have positioning function after finishing is installed to connecting bolt 2 and is used for fixing tube sheet 11 on the tube sheet support member 4; Last bore all the other still unprocessed tube sheet heat exchange holes, so just can reach the purpose that guarantees that the surface quality of holing avoids tube sheet 11 to be out of shape still with the axis G of limit base 1 " 0 " point as program.
Claims (4)
1. turbine condenser tube sheet heat exchange hole fixture for processing, it is characterized in that: said anchor clamps comprise rectangle base plate (5), two limit bases (1), a plurality of connecting bolt (2), a plurality of space washer (3), a plurality of tube sheet support member (4), a plurality of elbow pressing plate (6), a plurality of double threaded screw (8), a plurality of nut (10) and a plurality of back-up block (9); The lower end of each tube sheet support member (4) is provided with external thread rod (4-1); The center of the upper end of each tube sheet support member (4) is processed with axial shoulder hole (4-2); The inboard in this axial shoulder hole (4-2) is processed with and the coaxial internal thread hole in said axial shoulder hole (4-2); Be processed with the air vent (4-3) that communicates with said axial shoulder hole (4-2) on the lateral wall of each tube sheet support member (4); A termination near width on the upper surface of rectangle base plate (5) is provided with two limit bases (1); Near each places a plurality of back-up blocks (9) respectively near another termination of width on the upper surface of the both sides of two length directions and rectangle base plate (5), each back-up block (9) is provided with an elbow pressing plate (6), and a double threaded screw (8) is housed in the connecting hole of each elbow pressing plate (6) on the upper surface of rectangle base plate (5); Lower end of this double threaded screw (8) and rectangle base plate (5) screw thread are affixed; The upper end of this double threaded screw (8) is threaded with corresponding nut (10), and a plurality of elbow pressing plates (6) are used to compress tube sheet (11), is processed with a plurality of positioning screw holes on the upper surface of rectangle base plate (5); A plurality of tube sheet support members (4) and a plurality of positioning screw hole are corresponding one by one to be provided with; The external thread rod (4-1) of each tube sheet support member (4) is threaded with positioning screw hole on the corresponding rectangle base plate (5), is processed with a plurality of connecting holes (11-1) on the tube sheet (11), a plurality of connecting holes (11-1) and the corresponding one by one setting in a plurality of axial shoulders holes (4-2); The connecting hole (11-1) that each connecting bolt (2) passes on the tube sheet (11) is threaded with internal thread hole on the tube sheet support member (4), and location space washer (3) is housed on each connecting bolt (2).
2. turbine condenser tube sheet heat exchange according to claim 1 hole fixture for processing, it is characterized in that: each tube sheet support member (4) from top to bottom is made up of first cylinder (4-4) of processing one, first Rotary-table (4-5), second cylinder (4-6), second Rotary-table (4-7), three cylindrical body (4-8) and external thread rod (4-1); The external diameter of first cylinder (4-4) is less than the diameter of first Rotary-table (4-5) upper surface; The diameter of first Rotary-table (4-5) upper surface is less than the diameter of first Rotary-table (4-5) lower surface; The diameter of first Rotary-table (4-5) lower surface equates with the external diameter of second cylinder (4-6); The upper surface diameter of second Rotary-table (4-7) equates with the external diameter of second cylinder (4-6); The upper surface diameter of second Rotary-table (4-7) is less than the lower surface diameter of second Rotary-table (4-7), and the lower surface diameter of second Rotary-table (4-7) equates that with the external diameter of three cylindrical body (4-8) external diameter of external thread rod (4-1) is less than the external diameter of three cylindrical body (4-8).
3. turbine condenser tube sheet heat exchange according to claim 1 and 2 hole fixture for processing, it is characterized in that: two limit bases (1) are symmetrical set with respect to the center line of the length direction of rectangle base plate (5).
4. turbine condenser tube sheet heat exchange according to claim 1 and 2 hole fixture for processing, it is characterized in that: the lower end of space washer (3) is provided with boss (3-1), and the boss (3-1) of space washer (3) is arranged in the connecting hole (11-1) of tube sheet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120259731XU CN202155722U (en) | 2011-07-21 | 2011-07-21 | Fixture for processing heat exchanging holes of tube plates of condensers of turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120259731XU CN202155722U (en) | 2011-07-21 | 2011-07-21 | Fixture for processing heat exchanging holes of tube plates of condensers of turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202155722U true CN202155722U (en) | 2012-03-07 |
Family
ID=45763371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120259731XU Expired - Lifetime CN202155722U (en) | 2011-07-21 | 2011-07-21 | Fixture for processing heat exchanging holes of tube plates of condensers of turbines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202155722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394938A (en) * | 2013-07-01 | 2013-11-20 | 天津台荣精密机械工业有限公司 | Machining tool of part with multiple stepped holes and working method thereof |
-
2011
- 2011-07-21 CN CN201120259731XU patent/CN202155722U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394938A (en) * | 2013-07-01 | 2013-11-20 | 天津台荣精密机械工业有限公司 | Machining tool of part with multiple stepped holes and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |