CN216802208U - Heating device for thick plate welding preheating and post heating - Google Patents
Heating device for thick plate welding preheating and post heating Download PDFInfo
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- CN216802208U CN216802208U CN202123286281.6U CN202123286281U CN216802208U CN 216802208 U CN216802208 U CN 216802208U CN 202123286281 U CN202123286281 U CN 202123286281U CN 216802208 U CN216802208 U CN 216802208U
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Abstract
The utility model discloses a heating device for preheating and post-heating a thick plate during welding, which comprises a heating device, wherein the heating device comprises an inner ring heating device and an outer ring heating device, the inner ring heating device and the outer ring heating device are respectively arranged on the inner side and the outer side of a flange welding disc, the heating device comprises a steel pipe, one end of the steel pipe is provided with a connecting end, the other end of the steel pipe is arranged in a sealing manner, the connecting end is connected to an external air pipe, and the steel pipe is provided with a flame projecting head. But both sides preheat simultaneously during welding the welding of great weight, and one side welding during the welding, the little flame of opposite side continues to heat, makes the temperature continuously keep preheating temperature, can be immediately after-heating after the welding is accomplished moreover, improvement welding quality that like this can be better. The manufacturing is simple, the operation is convenient, the production can be carried out according to the existing resources in the factory, the working efficiency is high, the manufacturing and using cost is low, and the use and economic values are good.
Description
Technical Field
The utility model belongs to the technical field of heating devices, and particularly relates to a heating device for preheating and post-heating a thick plate during welding.
Background
In the welding of important members, the welding of alloy steel, and the welding of heavy and thick parts, it is necessary to preheat the welded portion and its surroundings to slow down the cooling rate after welding and reduce the welding stress. If the heat treatment cannot be immediately performed after the welding work is stopped, the weldment having a tendency of cold cracking should be post-heated. The heating device capable of preheating and post-heating can solve the problems, and has the advantages of simple structure, convenient operation, high working efficiency and invisibly greatly increased enterprise operating cost.
SUMMERY OF THE UTILITY MODEL
In order to make up the defects of the prior art, the utility model provides a technical scheme of a heating device for preheating and post-heating a thick plate during welding.
The heating device comprises an inner ring heating device and an outer ring heating device, wherein the inner ring heating device and the outer ring heating device are respectively arranged on the inner side and the outer side of a flange welding disc, the heating device comprises a steel pipe, one end of the steel pipe is provided with a connecting end, the other end of the steel pipe is sealed, the connecting end is connected to an external air pipe, and a fire spraying head is arranged on the steel pipe.
Furthermore, the flame thrower is provided with a plurality of groups, and the equipartition setting is in one side of steel pipe.
Further, the flame spray head is arranged on the outer convex side of the steel pipe of the inner ring heating device;
the flame-throwing head is arranged on the concave side of the steel pipe of the outer ring heating device.
Further, the heating device is annular;
or the heating device is of a multi-section structure, and the annular structure is formed by a plurality of sections of inner ring heating devices or outer ring heating devices respectively.
Further, the link includes ball valve, benefit heart joint and quick-operation joint, ball valve threaded connection be in on the steel pipe, benefit heart joint threaded connection be in on the ball valve, quick-operation joint threaded connection be in on the benefit core joint.
Further, the steel pipe is evenly provided with round holes, the round holes are welded with mounting nuts, and the flame thrower head is fixedly connected with the mounting nuts.
Furthermore, the heating device also comprises a straight plate heating device, and a steel pipe on the straight plate heating device is in a linear type.
Compared with the prior art, the utility model has the following advantages:
but both sides preheat simultaneously when welding the welding piece of great thickness, and one side welding during the welding, the little flame of opposite side continues to heat, makes the temperature continuously keep preheating temperature, can be after-heat immediately after the welding is accomplished moreover, improvement welding quality that like this can be better. The manufacturing is simple, the operation is convenient, the manufacturing can be carried out according to the existing resources in the factory, the working efficiency is high, the manufacturing and using cost is low, and the use and economic values are good.
Drawings
FIG. 1 is a schematic view of the heating apparatus of the present invention;
FIG. 2 is a schematic structural diagram of an outer ring heating device according to the present invention;
FIG. 3 is a schematic structural view of an inner ring heating device according to the present invention;
FIG. 4 is a schematic structural diagram of a straight plate heating apparatus according to the present invention.
Detailed Description
The utility model will be further explained with reference to the drawings.
As shown in fig. 1-3, a heating device for preheating and post-heating in thick plate welding comprises a heating device 1, the heating device comprises an inner ring heating device 2 and an outer ring heating device 3, the inner ring heating device 2 and the outer ring heating device 3 are respectively arranged on the inner side and the outer side of a flange welding disc 4, the heating device 1 comprises a steel pipe 101, one end of the steel pipe 101 is provided with a connecting end 102, the other end is arranged in a sealing manner, the connecting end 102 is connected to an external air pipe, and the steel pipe 101 is provided with a flame spray head 103.
The flame projecting heads 103 are provided with a plurality of groups, and are uniformly distributed on one side of the steel pipe 101. For example, the flame thrower 103 is provided on the outer convex side of the steel pipe 101 of the inner ring heating apparatus 2; or the flame-throwing head 103 is provided on the concave side of the steel pipe 101 of the outer ring heating apparatus 3.
The heating device 1 is in a circular ring shape, or the heating device 1 is in a multi-section structure, and the multi-section inner ring heating device 2 or the outer ring heating device 3 respectively form the circular ring structure. Round holes are uniformly distributed in the steel pipe 101, mounting nuts are welded on the round holes, and the flame thrower head 103 is fixedly connected with the mounting nuts.
The connecting end 102 comprises a ball valve 1021, a bushing 1022 and a quick coupling 1023, wherein the ball valve 1021 is in threaded connection with the steel pipe 101, the bushing 1022 is in threaded connection with the ball valve 1021, and the quick coupling 1023 is in threaded connection with the bushing 1022.
As shown in fig. 4, in another embodiment, the heating device 1 is a straight plate heating device 5, and the steel pipe 101 on the straight plate heating device 5 is linear.
Quick-operation joint 1023 is 8mm quick-operation joint, mends the core and connects for 4 minutes commentaries on classics 6 minutes copper and mend the core and connect, and ball valve 1021 is ND20 ball valve.
External trachea is the acetylene leather hose, and acetylene leather hose both ends link to each other with quick-operation joint 1023 and acetylene gas pipe connection respectively, open valve and steel pipe 101 of acetylene gas pipe connection and go up ball valve 1021, ignite a plurality of evenly distributed's flame projecting head 103, can preheat the welding member. But both sides preheat simultaneously when welding the welding piece of great thickness, and one side welding during the welding, the little flame of opposite side continues to heat, makes the temperature continuously keep preheating temperature, can be after-heat immediately after the welding is accomplished moreover, improvement welding quality that like this can be better.
The diameter of the steel pipe 101 is 27mm, and the steel pipe can be bent to conform to the shape of a workpiece to be welded, or heating devices with different lengths can be manufactured according to the length of the welded workpiece.
The flame spray head can be selected from different types of spray heads, the size of flame is selected according to the type size of the spray heads, and the temperature is controlled. A plurality of flame spray heads 103 are arranged on the steel pipe 101 and combined side by side to heat flame, so that the preheating efficiency is greatly increased, and the working efficiency is high. And the flame projecting head 103 is in threaded connection, can be freely disassembled and assembled, and is flexible and convenient.
The manufacturing is simple, the operation is convenient, the manufacturing can be carried out according to the existing resources in the factory, the working efficiency is high, the manufacturing and using cost is low, and the use and economic values are good.
Claims (7)
1. The utility model provides a thick plate welding preheats and hot heating device in back, its characterized in that includes heating device (1), heating device includes inner circle heating device (2) and outer lane heating device (3), inner circle heating device (2) set up the inside and outside both sides at flange bonding dish (4) respectively with outer lane heating device (3), heating device (1) includes steel pipe (101), the one end of steel pipe (101) is provided with link (102), and the other end seals up and sets up, link (102) are connected to on the external trachea, be provided with flame projecting head (103) on steel pipe (101).
2. The heating device for preheating and post-heating in slab welding according to claim 1, wherein the plurality of groups of the flame-throwing heads (103) are uniformly arranged on one side of the steel pipe (101).
3. A heating device for preheating and post-heating in slab welding according to claim 2, characterized in that said flame spray head (103) is provided on the outer convex side of the steel pipe (101) of said inner ring heating device (2);
the flame-throwing head (103) is arranged on the inward concave side of the steel pipe (101) of the outer ring heating device (3).
4. The heating device for preheating and post-heating in thick plate welding according to claim 1, wherein the heating device (1) is annular;
or the heating device (1) is of a multi-section structure, and the annular structure is formed by the multi-section inner ring heating device (2) or the outer ring heating device (3) respectively.
5. A heating apparatus for preheating and post-heating in welding a thick plate according to claim 1, wherein said connection end (102) comprises a ball valve (1021), a core supplement joint (1022) and a quick coupling (1023), said ball valve (1021) is screwed on said steel pipe (101), said core supplement joint (1022) is screwed on said ball valve (1021), and said quick coupling (1023) is screwed on said core supplement joint (1022).
6. The heating device for preheating and post-heating in thick plate welding according to claim 3, wherein the steel pipe (101) is uniformly provided with round holes, the round holes are welded with mounting nuts, and the flame spray head (103) is fixedly connected with the mounting nuts.
7. The heating device for preheating and post-heating in thick plate welding of claim 1, wherein the heating device (1) further comprises a straight plate heating device (5), and the steel pipe (101) on the straight plate heating device (5) is linear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123286281.6U CN216802208U (en) | 2021-12-24 | 2021-12-24 | Heating device for thick plate welding preheating and post heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123286281.6U CN216802208U (en) | 2021-12-24 | 2021-12-24 | Heating device for thick plate welding preheating and post heating |
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| Publication Number | Publication Date |
|---|---|
| CN216802208U true CN216802208U (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123286281.6U Active CN216802208U (en) | 2021-12-24 | 2021-12-24 | Heating device for thick plate welding preheating and post heating |
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| CN (1) | CN216802208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117086522A (en) * | 2023-09-22 | 2023-11-21 | 中建五洲工程装备有限公司 | Tower section of thick bamboo girth welding preheating device |
-
2021
- 2021-12-24 CN CN202123286281.6U patent/CN216802208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117086522A (en) * | 2023-09-22 | 2023-11-21 | 中建五洲工程装备有限公司 | Tower section of thick bamboo girth welding preheating device |
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