CN221313075U - Heat exchange tube and tube plate welding positioning mandrel for heat exchanger - Google Patents
Heat exchange tube and tube plate welding positioning mandrel for heat exchanger Download PDFInfo
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- CN221313075U CN221313075U CN202323238408.6U CN202323238408U CN221313075U CN 221313075 U CN221313075 U CN 221313075U CN 202323238408 U CN202323238408 U CN 202323238408U CN 221313075 U CN221313075 U CN 221313075U
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- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 30
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Abstract
The utility model discloses a heat exchange tube and tube plate welding positioning mandrel for a heat exchanger, which comprises a mandrel connected with a welding machine, wherein a side baffle ring is arranged at the connecting end of the mandrel and the welding machine, a cone top is arranged at the other end of the mandrel, a middle ring is arranged at the middle part of the mandrel, extrusion positioning devices are arranged between the side baffle ring and the middle ring and between the middle ring and the cone top, elastic devices are arranged between the side baffle ring and the adjacent extrusion positioning devices, between the middle ring and the adjacent two groups of extrusion positioning devices, and between the cone top and the adjacent extrusion positioning devices, the mandrel is integrally inserted into a hole of a heating tube, when a positioning ball on the extrusion positioning device contacts with the inner wall of the heating tube, the positioning ball is extruded by the inner wall of the heating tube to move towards the inside of a cone-shaped accommodating cavity, and the cone body is stressed relatively outwards, so that the positioning ball is tightly attached to the inner wall of the heating tube, concentric positioning of a heating tube hole and a hole is realized, and then the tube plate is welded.
Description
Technical Field
The utility model relates to a welding positioning mandrel for a heat exchange tube and a tube plate for a heat exchanger.
Background
The heat exchanger is common equipment in each trade production, and the heat exchanger includes tube sheet and heat exchange tube, and the equipartition has a plurality of through-holes on the tube sheet, and conventional production mode is realized fixedly with heat exchange tube tip welding in the through-hole through the welding machine, because the heat exchange tube is longer, the phenomenon of eccentric appears very easily when the heat exchange tube is fixed a position in the tube sheet through-hole, heat exchange tube outer wall and tube sheet pore wall can not laminate after the heat exchange tube is eccentric, welds under this kind of circumstances, makes the welding infirm easily, and the heat exchange tube is not perpendicular with the tube sheet, and then influences the functional effect and the life of heat exchanger.
In addition, the diameters of heat exchange tubes in different types of heat exchangers are different, and the diameters of through holes in tube plates are also different.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model aims to provide the heat exchange tube and the tube plate welding positioning mandrel for the heat exchange tube, which are convenient for positioning the heat exchange tube on the tube plate before welding.
The technical aim of the utility model is realized by the following technical scheme:
The utility model provides a heat exchange tube and tube sheet welding location dabber for heat exchanger which structural feature is: the welding machine comprises a mandrel connected with the welding machine, a side baffle ring is arranged at the connecting end of the mandrel and the welding machine, a cone top is arranged at the other end of the mandrel, a middle ring is arranged at the middle part of the mandrel, extrusion positioning devices are arranged between the side baffle ring and the middle ring and between the middle ring and the cone top, and elastic devices are arranged between the side baffle ring and the adjacent extrusion positioning devices, between the middle ring and the adjacent two groups of extrusion positioning devices and between the cone top and the adjacent extrusion positioning devices.
Further preferred is the following scheme: each group of extrusion positioning device comprises a steel ball ring, two cone bodies mounted on the mandrel are sleeved in the steel ball ring, inclined planes of the two cone bodies are arranged oppositely, a gasket is arranged between the two cone bodies, conical accommodating cavities are formed between the inclined planes of the two cone bodies and the gasket respectively, and a plurality of positioning balls capable of extending out of the steel ball ring are arranged in each conical accommodating cavity in a surrounding mode.
Further preferred is the following scheme: the steel ball ring is provided with a plurality of conical holes which are communicated with the conical accommodating cavity and can be used for the positioning ball to extend out.
Further preferred is the following scheme: the steel ball ring is provided with a plurality of conical Kong Zucheng first circles communicated with one conical accommodating cavity and a plurality of conical Kong Zucheng second circles communicated with the other conical accommodating cavity, and a plurality of conical holes in the first circles and a plurality of conical holes in the second circles are staggered.
Further preferred is the following scheme: the aperture of each conical hole gradually increases from the outer wall of the steel ball ring to the inner wall of the steel ball ring, and the aperture of the middle part of the conical hole is equal to the diameter of the positioning ball.
Further preferred is the following scheme: the elastic device is a spring, and the spring is sleeved on the mandrel and is squeezed between the side baffle ring and the cone body in one group of extrusion positioning devices, between the other cone body in one group of extrusion positioning devices and the middle ring, between the middle ring and the cone body in the other group of extrusion positioning devices, and between the other cone body in the other group of extrusion positioning devices and the cone apex.
Further preferred is the following scheme: the middle part of the middle ring is provided with a middle partition plate, and the middle partition plate divides the inner cavity of the middle ring into a left cavity and a right cavity which can accommodate springs.
Further preferred is the following scheme: the opposite outer end side of the cone top is a conical surface, the middle part of the opposite outer end surface of the cone top is provided with a groove, and an elastic retainer ring is arranged in the groove.
Compared with the prior art, the utility model has the following beneficial effects:
The mandrel is sequentially provided with a side baffle ring, a group of extrusion positioning devices, a middle ring, another group of extrusion positioning devices and a cone top, and springs are sleeved between two adjacent parts. The utility model provides a heating pipe, including heating pipe hole, the dabber is whole inserts in the hole of heating pipe, when extrusion positioner is last locating ball and heating pipe inner wall contact, the locating ball receives the extrusion of heating pipe inner wall to the toper and holds the intracavity portion and remove, just so can make locating ball and heating pipe inner wall closely laminate, realize heating pipe hole and the concentric location of tube sheet hole, then weld, this kind of locate mode can improve welded accuracy, moreover the commonality is strong, not unidimensional heating pipe all can be used, the mounting hole is more on the tube sheet, before the welding work, initially fix each heating pipe in the tube plate hole, take down the dabber after the welding of a heating pipe is accomplished and insert in next heating pipe and carry out the fixed-position welding, this kind of operating mode convenient and fast, and is efficient.
The two circles of conical holes on the steel ball ring are arranged in a staggered manner, so that the positioning balls are distributed more uniformly, the contact area between the positioning balls and the inner wall of the heating pipe is increased, and the positioning accuracy of the heating pipe in the pipe plate hole is further improved.
The utility model has simple structure, convenient operation, low manufacturing cost, convenient concentric positioning of the heating tube hole and the tube plate hole, greatly improved welding precision of the heating tube, strong universality and convenient popularization.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural view of the steel ball ring;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
Fig. 4 is a sectional view taken along the direction B-B in fig. 2.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in fig. 1, the utility model relates to a welding positioning mandrel for a heat exchange tube and a tube plate for a heat exchanger, which comprises a mandrel 1 connected with a welding machine, wherein a side baffle ring 11, a group of extrusion positioning devices, a middle ring 5, another group of extrusion positioning devices and a cone apex 8 are sequentially arranged on the mandrel 1 from left to right, and elastic devices are sleeved between two adjacent parts, wherein in the embodiment, the elastic devices are springs 6.
The concrete installation structure comprises the following steps: as shown in fig. 1, a side baffle ring 11 is arranged at the connection end of the mandrel 1 and the welding machine, in this embodiment, the side baffle ring 11 is a U-shaped plate integrally formed with the mandrel 1, an inner cavity of the U-shaped plate can accommodate the spring 6, a clamping groove is arranged at the bottom of the inner cavity of the U-shaped plate, and the end part of the spring 6 is installed in the clamping groove to realize positioning. The other end of dabber 1 is equipped with the cone top 8, and the opposite outer end side of cone top 8 is the conical surface, and in the cone top 8 stretched into the tube sheet through-hole of being convenient for, the middle part of the opposite outer terminal surface of cone top 8 was equipped with the recess, installs circlip 9 in the recess, and the dabber 1 is gone up to encircle in this embodiment and is equipped with the draw-in groove, and circlip 9 clamps in the draw-in groove, and cone top 8 realizes spacing under the effect of circlip 9. As shown in fig. 1, the middle part of the mandrel 1 is provided with a middle ring 5, in this embodiment, the middle part of the middle ring 5 is provided with a middle partition plate 51, and the middle partition plate 51 divides the inner cavity of the middle ring 5 into a left cavity and a right cavity capable of accommodating the springs 6.
As shown in fig. 1, extrusion positioning devices are respectively arranged between the side baffle ring 11 and the middle ring 5 and between the middle ring 5 and the cone top 8, in this embodiment, each group of extrusion positioning devices comprises a steel ball ring 2, two cone bodies 4 installed on the mandrel 1 are sleeved in the steel ball ring 2, inclined planes of the two cone bodies 4 are oppositely arranged, a gasket 3 is arranged between the two cone bodies 4, as shown in fig. 1, a gap for the cone bodies 4 to move left and right on the mandrel 1 is respectively arranged between the gasket 3 and the adjacent cone bodies 4, a conical accommodating cavity is respectively formed between the inclined planes of the two cone bodies 4 and the gasket 3, a plurality of positioning balls 7 capable of extending out of the steel ball ring 2 are respectively arranged in the two conical accommodating cavities, in this embodiment, a plurality of conical holes 21 which are communicated with the conical accommodating cavity and are capable of partially extending out of the positioning balls 7 are arranged on the steel ball ring 2, as shown in fig. 1 and 2, the aperture of each conical hole 21 is gradually increased from the outer wall of the steel ball ring 2 to the inner wall, the diameter of the middle of the conical hole 21 is equal to the diameter of the positioning balls 7, and the positioning balls can be completely extended out of the conical holes 21.
As shown in fig. 1, the spring 6 is sleeved on the mandrel 1 and is squeezed between the side baffle ring 11 and the cone 4 in one set of extrusion positioning devices, between the other cone 4 in one set of extrusion positioning devices and the middle ring 5, between the middle ring 5 and the cone 4 in the other set of extrusion positioning devices, and between the other cone 4 and the cone tip 8 in the other set of extrusion positioning devices. As shown in fig. 1, gaps for the cone 4 to move left and right along the mandrel 1 are reserved between the side baffle ring 11 and the adjacent steel ball rings 2, between the middle ring 5 and the adjacent two steel ball rings 2, and between the cone top 8 and the adjacent steel ball rings 2.
In this embodiment, the installation state of the spring 6 is an extrusion state, the positioning ball part extends out of the conical hole 21, and when in use, the mandrel 1 is integrally inserted into the hole of the heating pipe, when the positioning ball 7 contacts with the inner wall of the heating pipe, the positioning ball 7 is extruded by the inner wall of the heating pipe to move towards the inside of the conical accommodating cavity, the cone 4 is stressed to move outwards relatively, and at the moment, the springs 6 are further extruded, so that the positioning ball 7 is tightly attached to the inner wall of the heating pipe, concentric positioning of the heating pipe hole and the pipe plate hole is realized, and then welding is performed. In the prior art, the tube plate is provided with more mounting holes, each heating tube is initially fixed in the hole of the tube plate before welding, the mandrel 1 is taken down and inserted into the next heating tube for positioning welding after welding of one heating tube is completed, and the operation mode is convenient and quick and has high efficiency.
As shown in fig. 2-4, the steel ball ring 2 and the conical holes 21 communicated with one conical accommodating cavity form a first circle, and the conical holes 21 communicated with the other conical accommodating cavity form a second circle, and the conical holes 21 in the first circle and the conical holes 21 in the second circle are staggered, so that the positioning balls 7 are distributed more uniformly, the contact area between the positioning balls 7 and the inner wall of the heating pipe is increased, and the positioning accuracy of the heating pipe in the pipe plate hole is further improved.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. A heat exchange tube and tube plate welding positioning mandrel for a heat exchanger is characterized in that: including dabber (1) of being connected with the welding machine, the dabber (1) is equipped with side baffle ring (11) with the link of welding machine, and the other end of dabber (1) is equipped with cone top (8), and the middle part of dabber (1) is equipped with middle ring (5), all be provided with extrusion positioner between side baffle ring (11) and middle ring (5), between middle ring (5) and cone top (8), between side baffle ring (11) and the adjacent extrusion positioner, between middle ring (5) and the adjacent two sets of extrusion positioner, all be equipped with resilient means between cone top (8) and the adjacent extrusion positioner.
2. The heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 1, wherein: each group of extrusion positioning device comprises a steel ball ring (2), two vertebral bodies (4) mounted on the mandrel (1) are sleeved in the steel ball ring (2), inclined planes of the two vertebral bodies (4) are oppositely arranged, a gasket (3) is arranged between the two vertebral bodies (4), conical accommodating cavities are respectively formed between the inclined planes of the two vertebral bodies (4) and the gasket (3), and a plurality of positioning balls (7) capable of extending out of the steel ball ring (2) are annularly arranged in each conical accommodating cavity.
3. The heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 2, wherein: the steel ball ring (2) is provided with a plurality of conical holes (21) which are communicated with the conical accommodating cavity and can be used for the positioning balls (7) to partially extend out.
4. A heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 3, wherein: the steel ball ring (2) and a plurality of conical holes (21) communicated with one conical accommodating cavity form a first circle, and a plurality of conical holes (21) communicated with the other conical accommodating cavity form a second circle, and the conical holes (21) in the first circle and the conical holes (21) in the second circle are staggered.
5. A heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 3, wherein: the aperture of each conical hole (21) gradually increases from the outer wall of the steel ball ring (2) to the inner wall of the steel ball ring, and the aperture of the middle part of each conical hole (21) is equal to the diameter of the positioning ball (7).
6. The heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 2, wherein: the elastic device is a spring (6), the spring (6) is sleeved on the mandrel (1) and is squeezed between the side baffle ring (11) and the cone body (4) in one group of extrusion positioning devices, between the other cone body (4) in one group of extrusion positioning devices and the middle ring (5), between the middle ring (5) and the cone body (4) in the other group of extrusion positioning devices, and between the other cone body (4) in the other group of extrusion positioning devices and the cone tip (8).
7. The heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 6, wherein: the middle part of the middle ring (5) is provided with a middle partition plate (51), and the middle partition plate (51) divides the inner cavity of the middle ring (5) into a left cavity and a right cavity which can accommodate the springs (6).
8. The heat exchange tube and tube sheet welding positioning mandrel for a heat exchanger according to claim 1, wherein: the side surfaces of the opposite outer ends of the cone top (8) are conical surfaces, grooves are formed in the middle of the opposite outer end surfaces of the cone top (8), and elastic check rings (9) are arranged in the grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323238408.6U CN221313075U (en) | 2023-11-29 | 2023-11-29 | Heat exchange tube and tube plate welding positioning mandrel for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323238408.6U CN221313075U (en) | 2023-11-29 | 2023-11-29 | Heat exchange tube and tube plate welding positioning mandrel for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221313075U true CN221313075U (en) | 2024-07-12 |
Family
ID=91797735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323238408.6U Active CN221313075U (en) | 2023-11-29 | 2023-11-29 | Heat exchange tube and tube plate welding positioning mandrel for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221313075U (en) |
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2023
- 2023-11-29 CN CN202323238408.6U patent/CN221313075U/en active Active
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