CN113787246A - Method for welding anti-abrasion tile of heating surface coiled pipe and coiled pipe heat exchanger - Google Patents
Method for welding anti-abrasion tile of heating surface coiled pipe and coiled pipe heat exchanger Download PDFInfo
- Publication number
- CN113787246A CN113787246A CN202111205141.3A CN202111205141A CN113787246A CN 113787246 A CN113787246 A CN 113787246A CN 202111205141 A CN202111205141 A CN 202111205141A CN 113787246 A CN113787246 A CN 113787246A
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- China
- Prior art keywords
- tile
- welding
- coiled pipe
- abrasion
- wear
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a method for welding an abrasion-proof tile of a coiled pipe on a heating surface and a coiled pipe heat exchanger, belonging to the technical field of heat exchangers, and the technical scheme is as follows: and connecting the welding grounding cable with the coiled pipe clamp, and welding the anti-abrasion tiles in the sequence from the direction close to the coiled pipe clamp to the direction far away from the coiled pipe clamp. The invention effectively controls the flowing direction of the welding current, thereby avoiding the condition that the welding arc burns the coiled pipe, ensuring the welding quality and improving the safety.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a method for welding an abrasion-proof tile of a coiled pipe with a heating surface and the coiled pipe heat exchanger.
Background
Before construction, the anti-abrasion tile of the heating surface coiled pipe is firstly placed on a prefabricated workbench, and then a welding grounding cable is connected with the workbench. When the anti-abrasion tile is installed and welded, welding current is conducted according to the sequence from the welding grounding cable to the workbench to the heating surface coiled pipe to the anti-abrasion tile, and finally an electric arc is formed to complete the welding work of the anti-abrasion tile of the heating surface coiled pipe.
The inventor finds that arc ignition points can appear between the workbench and the heating surface coiled pipe and between the heating surface coiled pipe and the anti-abrasion tile due to the passing of current, so that the coiled pipe is easily burnt; the wall thickness of the serpentine pipe can be reduced to be lower than the designed wall thickness under the burning condition of the arc ignition point, so that the safe operation of the serpentine pipe on the heating surface is influenced. Moreover, after the heating surface coiled pipe is burnt, the burning position is not easy to be found due to uncertainty and concealment, so that potential safety hazards are buried.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a welding method of an abrasion-proof tile of a coiled pipe on a heating surface and a coiled pipe heat exchanger, which effectively control the flowing direction of welding current, thereby avoiding the situation that welding electric arc burns the coiled pipe, ensuring the welding quality and improving the safety.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, embodiments of the present invention provide a method for welding wear-resistant shoes of a serpentine tube having a heating surface, in which a welding ground cable is connected to a clamp of the serpentine tube, and the wear-resistant shoes are welded in sequence from a direction close to the clamp of the serpentine tube to a direction away from the clamp.
As a further implementation mode, a plurality of anti-abrasion tiles are sequentially installed from the side of the coiled pipe clamp, and the anti-abrasion tiles and the coiled pipe clamp are welded and fixed.
As a further implementation, the abrasion-proof tile is provided with a plurality of abrasion-proof tile snap rings.
In a second aspect, an embodiment of the present invention further provides a method for welding an anti-wear tile of a serpentine pipe on a heating surface, in which a welding ground cable is connected to the anti-wear tile, and an anti-wear tile snap ring is installed and welded.
As a further implementation, the welding ground cable exits the welder.
As a further implementation, the soldered ground cable end is mounted with a clip.
As a further implementation mode, a lap welding mode is adopted between the anti-abrasion tile clamping ring and the anti-abrasion tile.
As a further implementation, the arc length of the anti-wear tile snap ring is greater than the arc length of the anti-wear tile.
As a further implementation mode, the lap joint of the anti-abrasion tile clamping ring and the anti-abrasion tile is fully welded.
In a third aspect, an embodiment of the present invention further provides a serpentine tube heat exchanger, including a serpentine tube, and an anti-wear tile installed on a surface of the serpentine tube, where the anti-wear tile is fixed to the serpentine tube by using the welding method.
The invention has the following beneficial effects:
(1) for the anti-abrasion tiles connected with the coiled pipe clamp, the welding grounding cable is connected with the coiled pipe clamp, the anti-abrasion tiles are welded in sequence from the direction close to the coiled pipe clamp to the direction far away from the coiled pipe clamp, the welding current is guided to circulate in the direction from the coiled pipe clamp to each anti-abrasion tile, the welding current is prevented from passing through the coiled pipe on the heating surface, and the coiled pipe is prevented from being burnt due to the arc leading point.
(2) For the anti-abrasion tile which is not connected with the pipe clamp of the coiled pipe, the welding grounding cable is connected with the anti-abrasion tile, the anti-abrasion tile clamping ring, the anti-abrasion tile and the coiled pipe are welded, the welding current is guided to circulate in the direction from the anti-abrasion tile to the anti-abrasion tile clamping ring, the welding current is prevented from passing through the coiled pipe, and the coiled pipe is prevented from being burnt due to the arc ignition point.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a soldered grounding cable connection according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a soldered grounding cable connection according to a second embodiment of the present invention;
wherein, 1, the coiled pipe, 2, coiled pipe clamp, 3, first abrasionproof tile, 4, abrasionproof tile snap ring, 5, first abrasionproof tile snap ring, 6, abrasionproof tile, 7, second abrasionproof tile, 8, second abrasionproof tile snap ring, 9, abrasionproof tile snap ring, 10, abrasionproof tile, 11, welding earthing cable.
Detailed Description
The first embodiment is as follows:
the embodiment provides a method for welding an anti-abrasion tile of a serpentine pipe with a heating surface aiming at the anti-abrasion tile connected with a serpentine pipe clamp 2, as shown in fig. 1, a welding grounding cable 11 is connected with the serpentine pipe clamp 2, and the anti-abrasion tiles are welded in sequence from the side close to the serpentine pipe clamp 2 to the direction far away from the serpentine pipe clamp 2; the welding current is led to flow from the coiled pipe clamp 2 to each anti-abrasion tile through the welding grounding cable 11, so that the welding current is effectively prevented from burning due to the fact that the welding current passes through the coiled pipe 1.
This embodiment uses the welding of two abrasionproof tiles of pipe clamp side as the example, first abrasionproof tile 3, second abrasionproof tile 7 promptly, and the one end of first abrasionproof tile 3 is equipped with first abrasionproof tile snap ring 5, and the one end of second abrasionproof tile 7 is equipped with second abrasionproof tile snap ring 8.
The specific welding steps are as follows:
step (1): connecting the welding grounding cable 11 with the coiled pipe clamp 2;
the welding grounding cable 11 is led out from the welding machine, a clamping head is arranged at the end part of the welding grounding cable 11, and the coiled pipe clamp 2 is clamped through the clamping head.
Step (2): firstly, a first anti-abrasion tile 3 close to the coiled pipe clamp 2 is installed, and then a second anti-abrasion tile 7 is installed;
wherein, the welding of the one end of first abrasionproof tile 3 has first abrasionproof tile snap ring 5, and the welding of the one end of second abrasionproof tile 7 has second abrasionproof tile snap ring 8, adopts the overlap joint welding mode between first abrasionproof tile snap ring 5 and the first abrasionproof tile 3, between second abrasionproof tile snap ring 8 and the second abrasionproof tile 7, and the overlap joint adopts full weld to prevent to cause the desoldering because of vibration, inflation inequality.
The arc length of the first anti-abrasion tile snap ring 5 is greater than that of the first anti-abrasion tile 3, and the arc length of the second anti-abrasion tile snap ring 8 is greater than that of the second anti-abrasion tile 7, so that a welding position is reserved, and welding and fixing are facilitated.
And (3): the first anti-abrasion tile 3 and the coiled pipe clamp 2 are fixedly welded, and then the first anti-abrasion tile 3 and the coiled pipe 1, the first anti-abrasion tile clamping ring 5 and the coiled pipe 1, the second anti-abrasion tile 7 and the coiled pipe 1, and the second anti-abrasion tile clamping ring 8 and the coiled pipe 1 are welded in sequence.
This embodiment is through the welding earth cable 11 that links to each other with coiled pipe clamp 2 to adopt from being close to the pipe clamp side to the direction welding of keeping away from, guide welding current circulates according to the direction of coiled pipe clamp 2 to first abrasionproof tile 3, first abrasionproof tile snap ring 5, second abrasionproof tile 7, second abrasionproof tile snap ring 8, avoided welding current to pass through the heating surface coiled pipe, thereby avoid appearing leading arc point and burn coiled pipe 1.
Example two:
the embodiment provides a method for welding an anti-abrasion tile of a serpentine pipe with a heating surface aiming at the anti-abrasion tile which is not connected with a serpentine pipe clamp 2, as shown in fig. 2, a welding grounding cable 11 is connected with an anti-abrasion tile 6, an anti-abrasion tile clamping ring 4 is installed and welded, welding current is guided to circulate in the direction from an anti-abrasion tile 10 to an anti-abrasion tile clamping ring 9, and the welding current is prevented from passing through the serpentine pipe 1.
Specifically, the method comprises the following steps:
step (1): connecting the welding grounding cable 11 with the anti-abrasion tile 6;
the welding grounding cable 11 is led out from the welding machine, a clamping head is arranged at the end part of the welding grounding cable 11, and the abrasion-proof tile 6 is clamped by the clamping head.
Step (2): the two ends of the anti-abrasion tile 6 are fixedly welded with the anti-abrasion tile snap rings 4, and the anti-abrasion tile 6 is clamped on the surface of the serpentine pipe 1.
Wherein, adopt the overlap joint welding mode between abrasionproof tile snap ring 4 and the abrasionproof tile 6, and the overlap joint adopts full weld to prevent to cause the desoldering because of vibration, the inflation inequality.
The arc length of the anti-abrasion tile clamping ring 4 is larger than that of the anti-abrasion tile 6, so that a welding position is reserved, and welding and fixing are facilitated.
And (3): and welding the anti-abrasion tile clamping ring 4 and the anti-abrasion tile 6, the anti-abrasion tile 6 and the coiled pipe 1.
The embodiment can guide the welding current to pass through the coiled pipe 1 according to the anti-abrasion tile 6 to the anti-abrasion tile clamping ring 4, so that the coiled pipe 1 is prevented from being burnt due to the arc ignition point.
Example three:
the embodiment provides a coiled pipe heat exchanger, which comprises a coiled pipe and an anti-abrasion tile arranged on the surface of the coiled pipe, wherein the anti-abrasion tile is fixed with the coiled pipe by adopting the welding method described in the first embodiment or the second embodiment.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A welding method for an anti-abrasion tile of a serpentine pipe on a heating surface is characterized in that a welding grounding cable is connected with a pipe clamp of the serpentine pipe, and the anti-abrasion tiles are welded in sequence from the direction close to the pipe clamp of the serpentine pipe to the direction far away from the pipe clamp of the serpentine pipe.
2. The method of claim 1, wherein a plurality of wear-resistant shoes are sequentially installed from the tube clamp side of the serpentine tube, and the wear-resistant shoes are welded and fixed to the tube clamp of the serpentine tube.
3. The method of claim 1, wherein the wear pad is fitted with a plurality of wear pad retaining rings.
4. A method for welding an anti-abrasion tile of a coiled pipe on a heating surface is characterized in that a welding grounding cable is connected with the anti-abrasion tile, and an anti-abrasion tile clamping ring is installed and welded.
5. The method of claim 1 or 4, wherein the welding ground cable is led out of the welder.
6. The method of claim 5, wherein a clamp is mounted on an end of the welded ground cable.
7. The method for welding the wear-resistant tile of the serpentine pipe with the heating surface as claimed in claim 3 or 4, wherein the wear-resistant tile snap ring and the wear-resistant tile are welded in an overlapping manner.
8. The method of claim 7, wherein the arc length of the wear shoe retaining ring is greater than the arc length of the wear shoe.
9. The method for welding the wear-resistant tile of the serpentine pipe with the heating surface as claimed in claim 7, wherein the lap joint of the wear-resistant tile snap ring and the wear-resistant tile is fully welded.
10. A serpentine heat exchanger comprising a serpentine tube and wear pads mounted on the surface of the serpentine tube, the wear pads being secured to the serpentine tube by welding as claimed in claim 1 or claim 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111205141.3A CN113787246B (en) | 2021-10-15 | 2021-10-15 | Welding method for anti-abrasion tile of coiled pipe of heating surface and coiled pipe heat exchanger |
| PCT/CN2022/111600 WO2023061016A1 (en) | 2021-10-15 | 2022-08-11 | Heated face serpentine tube anti-wear tile welding method and serpentine tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111205141.3A CN113787246B (en) | 2021-10-15 | 2021-10-15 | Welding method for anti-abrasion tile of coiled pipe of heating surface and coiled pipe heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113787246A true CN113787246A (en) | 2021-12-14 |
| CN113787246B CN113787246B (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111205141.3A Active CN113787246B (en) | 2021-10-15 | 2021-10-15 | Welding method for anti-abrasion tile of coiled pipe of heating surface and coiled pipe heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113787246B (en) |
| WO (1) | WO2023061016A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061016A1 (en) * | 2021-10-15 | 2023-04-20 | 中国电建集团山东电力建设第一工程有限公司 | Heated face serpentine tube anti-wear tile welding method and serpentine tube heat exchanger |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061016A1 (en) * | 2021-10-15 | 2023-04-20 | 中国电建集团山东电力建设第一工程有限公司 | Heated face serpentine tube anti-wear tile welding method and serpentine tube heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023061016A1 (en) | 2023-04-20 |
| CN113787246B (en) | 2023-06-16 |
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