CN204209270U - A kind of Flame Heating Temperature compensator for the long weld seam welding of steel plate - Google Patents

Abstract

The utility model relates to a flame heating temperature compensator for long weld seam welding of steel plates, which can effectively solve the problems of improving the process weldability of super-long welded joints of thick steel plates, reducing welding defects, and improving the first pass rate of butt weld seam flaw detection. The solution is to include a reducing pipe, a conduit and a flame nozzle. The large end of the reducing pipe is connected to the air inlet nozzle, and the small opening of the reducing pipe is equipped with a horizontal row pipe through the conduit, and uniformly distributed flames are arranged on the row pipe. Nozzle, the utility model is novel and unique in structure, simple and reasonable, easy to produce and easy to operate, greatly improves the weldability of thick steel plate ultra-long welded joints, reduces welding defects, improves the first pass rate of butt weld flaw detection, and can be widely used in low alloy The welding construction of super-long weld seam of high-strength steel thick steel plate is convenient to use, good in effect, and has good economic and social benefits.

Description

A Flame Heating Temperature Compensator for Long Welding of Steel Plates

technical field

The utility model relates to a flame heating temperature compensator used for submerged arc welding of butt joints of thick steel plates with a thickness of more than 32 mm and a length of 15 to 50 m.

Background technique

With the development of steel structure technology, super-high-rise and super-long-span steel components are more and more widely used in the field of building steel structures. The welding of high-strength steel thick plates has a certain hardening tendency. The super-long weld seam welding construction interval is long, the temperature control between layers is difficult, the weld seam cools relatively quickly, and welding cracks are prone to occur. Moreover, due to the super-long steel plate, the relative rigidity is low , the welding deformation caused by a large temperature difference is relatively large, and it is not easy to adjust, and the weldability of the ultra-long weld process of high-strength steel thick plates is poor. Therefore, effectively improving the problem of poor weldability of ultra-long welds in high-strength steel thick plates is a key issue to reduce welding defects and improve the first pass rate of butt weld flaw detection.

Contents of the invention

In view of the above situation, in order to overcome the defects of the prior art, the purpose of this utility model is to provide a flame heating temperature compensator for long weld seam welding of steel plates, which can effectively solve the problem of improving the weldability of ultra-long welded joints of thick steel plates, reducing Welding defects, improving the first pass rate of butt weld flaw detection.

The technical scheme solved by the utility model is to include a variable diameter pipe, a conduit and a flame nozzle, the large mouth end of the variable diameter pipe is connected with the air inlet nozzle, the small mouth end of the variable diameter pipe is equipped with a horizontal pipe through the conduit, and Equipped with evenly distributed flame nozzles.

The diameter of the flame nozzle is smaller than the diameter of the row pipe; the diameter of the conduit is smaller than the diameter of the row pipe.

The utility model is novel and unique in structure, simple and reasonable, easy to produce and easy to operate, greatly improves the weldability of the ultra-long welded joints of thick steel plates, reduces welding defects, improves the first pass rate of butt weld flaw detection, and can be widely used in low-alloy high-strength steel The welding construction of the super-long weld seam of the thick steel plate is convenient to use, has good effect, and has good economic and social benefits.

Description of drawings

Fig. 1 is the structural front view of the utility model.

Fig. 2 is a cross-sectional view along A-A of Fig. 1 of the present invention.

Fig. 3 is a sectional view along B-B direction of Fig. 1 of the present invention.

Fig. 4 is a sectional view along C-C direction of Fig. 1 of the present utility model.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

Provided by Fig. 1-4, the utility model comprises variable diameter pipe, conduit and flame nozzle, and the large mouth end of variable diameter pipe 6 is connected with air inlet nozzle 8, and the small mouth end of variable diameter pipe 6 is equipped with horizontal discharge pipe through conduit. The pipes 2 and row pipes 2 are provided with evenly distributed flame nozzles 1 .

In order to ensure the use effect, a sealing plate 7 is installed on the large mouth end of the reducing tube 6, and the air inlet nozzle 8 is fixed on the sealing plate 7 and communicated with the inner cavity of the reducing tube 6;

Both ends of the row pipe 2 are respectively equipped with support end plates 3 for fixing the pipe body, which are firmly fixed and stable;

The diameter of the flame nozzle 1 is smaller than the diameter of the row pipe 2; the diameter of the conduit is smaller than the diameter of the row pipe 2;

Described conduit comprises first conduit 5 and the second conduit 4 that are connected, and the inlet end of first conduit 5 communicates with the small mouth end of reducer pipe 6, and the gas outlet end of first conduit 5 passes second conduit 4 side The air inlet on the wall communicates with the inner cavity of the second conduit, and the gas outlets at both ends of the second conduit are respectively equipped with horizontal row pipes, and the row pipes are provided with evenly distributed flame nozzles 1 .

It can be clearly seen from the above that the intake nozzle 8, the variable diameter pipe 6, the first conduit 5, the second conduit 4, the row pipe 2 and the flame nozzle 1 form an air flow passage as a whole, wherein the diameter of the flame nozzle 1 is smaller than that of the row pipe 2, the diameter of the second conduit 4 is smaller than the diameter of the row pipe 2, the combustible gas enters the gas flow passage through the air inlet nozzle 8, and the gas passes through the variable diameter pipe 6, the first conduit 5, the second conduit 4, and the row pipe 2 in sequence. The flame nozzle 1 is sprayed out, and the diameter has been changed three times in total, which can ensure the stability of the gas outlet flow rate of the flame nozzle 1; when in use, multiple welding machines are uniformly distributed and synchronized for welding, and the welding process parameters of each welding machine are the same. The direction is the same, the welding machines are evenly distributed, and the flame heating temperature compensator is used to follow the heating compensation temperature during the welding process to control the interlayer temperature to meet the process requirements, which can greatly improve the process weldability of the ultra-long weld of thick steel plates; Compared with the existing technology, the utility model has a novel and unique structure, is simple and reasonable, easy to produce and easy to operate, greatly improves the weldability of the ultra-long welded joints of thick steel plates, reduces welding defects, improves the first pass rate of butt weld flaw detection, and can be widely used It is suitable for welding construction of ultra-long weld seam of low-alloy high-strength steel thick steel plate, easy to use, good effect, and has good economic and social benefits.

Claims (6)

1. the Flame Heating Temperature compensator for the long weld seam welding of steel plate, comprise reducer pipe, conduit and flame-thrower nozzle, it is characterized in that, the big opening end of reducer pipe (6) is connected with suction nozzle (8), the osculum end of reducer pipe (6) is equipped with the comb (2) of level through conduit, comb (2) is provided with uniform flame-thrower nozzle (1).

2. the Flame Heating Temperature compensator for the long weld seam welding of steel plate according to claim 1, it is characterized in that, the big opening end of described reducer pipe (6) is equipped with shrouding (7), suction nozzle (8) be fixed on shrouding (7) upper and with the intracavity inter-connection of reducer pipe (6).

3. the Flame Heating Temperature compensator for the long weld seam welding of steel plate according to claim 1, it is characterized in that, the support end plate (3) for flat fixed calandria body is equipped with at the two ends of described comb (2) respectively.

4. the Flame Heating Temperature compensator for the long weld seam welding of steel plate according to claim 1, it is characterized in that, the diameter of described flame-thrower nozzle (1) is less than the diameter of comb (2).

5. the Flame Heating Temperature compensator for the long weld seam welding of steel plate according to claim 1, it is characterized in that, the diameter of described conduit is less than the diameter of comb (2).

6. the Flame Heating Temperature compensator for the long weld seam welding of steel plate according to claim 1, it is characterized in that, described conduit comprises the first conduit (5) and the second conduit (4) that are connected, the inlet end of the first conduit (5) is connected with the osculum end of reducer pipe (6), air inlet on outlet side second conduit (4) sidewall of the first conduit (5) and the intracavity inter-connection of the second conduit, the gas outlet at the two ends of the second conduit is equipped with respectively the comb of level, comb is provided with uniform flame-thrower nozzle (1).