CN212705106U

CN212705106U - Tower frame welding preheats frock

Info

Publication number: CN212705106U
Application number: CN202021320797.0U
Authority: CN
Inventors: 那雪东
Original assignee: Nantong Taisheng Blue Island Offshore Co Ltd
Current assignee: Nantong Taisheng Blue Island Offshore Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-16
Anticipated expiration: 2030-07-08

Abstract

The utility model relates to a frock is preheated in pylon door frame welding, including preheating the ring and arranging a plurality of removal supports of preheating the ring lower extreme in, preheat and be equipped with a plurality of preheating nozzles on the ring, a plurality of preheating nozzles distribute round the extending direction who preheats the ring, preheat the ring and preheat the inside communicating with each other of nozzle, preheat the nozzle and be L shape structure, preheat the ring and go up the intercommunication and have an air supply pipe, be equipped with the blast valve on the air supply pipe. The utility model has the advantages of as follows: the work efficiency is improved, the residual stress inside and on the surface of the welding seam is reduced, and the surface quality of the welding seam is ensured.

Description

Tower frame welding preheats frock

The technical field is as follows:

the utility model belongs to marine wind power field, concretely relates to frock is preheated in welding of pylon door frame.

Background art:

the offshore wind power tower cylinder is a tower pole for wind power generation, and mainly plays a supporting role in a wind generating set and absorbs the vibration of the set. As shown in FIG. 4, the door frame 40 is generally positioned at the bottom of the tower tube 30 and is in an irregular oval shape, the welded joint between the door frame 40 and the tower tube 30 is in a T-shaped butt joint mode, the perimeter of the door frame is generally larger than 8000mm, the thickness of the plate is between 70mm and 100mm, the thickness of the part of the tower tube assembled and welded with the door frame is more than 30mm, and the welding stress is extremely large. The preheating temperature for welding the door frame is required to be more than 100 ℃, and the temperature difference is +/-10 ℃ within the perimeter range of the door frame.

Traditional welding preheats, adopt hand-held type to dry by the fire rifle by two operating personnel and preheat in turn, the door frame is cooling simultaneously at preheating the in-process, the extravagant energy, the utilization ratio of the energy is only about 20%, reduce welding and preheat efficiency, preheating temperature can not reach the requirement, lead to welding process in 50 inside and the surperficial great residual stress that produce of welding seam between door frame 40 and a tower section of thick bamboo 30, welding seam 50 surface weld toe position produces welding crack after the welding, the puzzlement of having brought the reprocess for the product and the cracked risk of door frame welding seam in the use, and simultaneously, this kind of hand-held type welder preheats consuming time power in turn, welding preheating time is longer, the operator welds preheating work under high temperature environment for a long time, and labor.

The utility model has the following contents:

the utility model aims at overcoming the not enough above, provide a frock is preheated in pylon door frame welding, improve work efficiency, reduce the inside residual stress with the surface of welding seam, guarantee welding seam surface quality.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a frock is preheated in welding of pylon door frame, includes preheats the ring and places a plurality of removal supports in preheating ring lower extreme in, preheats and is equipped with a plurality of preheating nozzles on the ring, and a plurality of preheating nozzles distribute around the extending direction that preheats the ring, preheats the ring and communicates with each other with preheating nozzle inside, preheats the nozzle and is L shape structure, preheats and is equipped with an air supply pipe on the ring intercommunication, is equipped with the air feed valve on the air supply.

The utility model discloses a further improvement lies in: the preheating nozzles are arranged on the preheating ring in an angle-adjustable manner.

The utility model discloses a further improvement lies in: the preheating ring is provided with a fixed seat, the upper end face of the fixed seat is provided with a spherical notch, the bottom of the spherical notch is provided with a first through hole communicated with the preheating ring, the lower end of the preheating nozzle is provided with a spherical body, the spherical body is embedded in the spherical notch, a second through hole is formed in the spherical body, and the second through hole is communicated with the preheating nozzle, the first through hole and the preheating ring.

The utility model discloses a further improvement lies in: the lower end of the spherical body is provided with a gap, and the lower end surface of the spherical body is a horizontal surface.

The utility model discloses a further improvement lies in: the outer side wall of the spherical body is tightly attached to the inner wall of the spherical recess, and a gap is formed between the lower end of the spherical body and the spherical recess.

The utility model discloses a further improvement lies in: the movable support comprises an upper sleeve and a lower sleeve which are mutually sleeved, the upper sleeve is vertically inserted into the lower sleeve, and the height of the movable support is adjusted and fixed through a clamping piece.

The utility model discloses a further improvement lies in: the upper sleeve and the lower sleeve are both hollow structures, a plurality of groups of first connecting hole groups which are vertically arranged in sequence are arranged on two side walls of the upper sleeve, each first connecting hole group consists of two first connecting holes which are correspondingly arranged, two second connecting holes which are correspondingly arranged are arranged on the lower sleeve, two first connecting holes and two second connecting holes which penetrate through any first connecting hole group are provided with a tightening bolt, and one end of the tightening bolt is provided with a tightening nut.

The utility model discloses a further improvement lies in: the lower end of the lower sleeve is provided with a supporting platform, and universal wheels are arranged below the supporting platform.

Compared with the prior art, the utility model has the following advantage:

the utility model discloses to preheat the ring location to the welding seam department between a tower section of thick bamboo and the door frame, make preheat the nozzle on the ring and evenly encircle and aim at welding seam department, open the blast valve on the blast pipe to ignite, realize unmanned operation, improve operator's operational environment, a plurality of preheat the nozzle and preheat the welding seam flame simultaneously, improve energy utilization, satisfy the requirement of preheating temperature 100 ℃ +/-10 ℃, thereby reduce the inside and surperficial residual stress of welding seam, guarantee welding seam surface quality.

Description of the drawings:

fig. 1 is the utility model relates to a pylon door frame welding preheats structure schematic diagram of frock.

Fig. 2 is the utility model relates to a preheating ring of frock is preheated in pylon door frame welding and the schematic diagram of being connected of preheating the nozzle.

Fig. 3 is the utility model relates to a pylon door frame welding preheats movable support's of frock structural schematic.

Fig. 4 is the utility model relates to a pylon and door frame's of frock is preheated in pylon door frame welding schematic diagram of being connected.

Reference numbers in the figures:

1-preheating ring, 2-moving bracket, 3-preheating nozzle, 4-fixing seat, 5-spherical notch, 6-first through hole, 7-spherical body, 8-gap, 9-second through hole and 10-horizontal plane;

21-an upper sleeve, 22-a lower sleeve, 23-a first connecting hole, 24-a second connecting hole, 25-a tightening bolt, 26-a tightening nut, 27-a supporting platform and 28-a universal wheel;

30-tower cylinder, 40-door frame and 50-welding seam.

The specific implementation mode is as follows:

in order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship, such as those based on the drawings, are only for convenience of description and simplification of description, and do not indicate or imply that the structures or units indicated must have a specific orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise specified or limited, terms such as "connected," "provided," "having," and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, or directly connected, and may be connected through an intermediate medium, and those skilled in the art can understand the basic meaning of the above terms in the present invention according to specific situations.

As fig. 1 shows the utility model relates to a pylon door frame welding preheats first embodiment of frock, including preheating ring 1 and placing a plurality of removal support 2 that preheat ring 1 lower extreme in, preheat and be equipped with a plurality of preheating nozzle 3 on the ring 1, a plurality of preheating nozzle 3 distribute round the extending direction who preheats ring 1, preheat ring 1 and preheat the inside communicating of nozzle 3, preheating nozzle 3 is L shape structure, preheat the last intercommunication of ring 1 and have an air supply pipe, be equipped with the air feed valve on the air supply pipe (fig. 1 does not show air feed pipe and air feed valve).

When the preheating device is used, the tower barrel 30 is placed on the blank frame, the door frame 40 is placed downwards, the welding seam 50 between the door frame 40 and the tower barrel 30 is horizontal, the preheating ring 1 is positioned to the welding seam 50 between the tower barrel 30 and the door frame 40, the preheating nozzles 3 on the preheating ring uniformly surround and align to the welding seam 50, the air supply valves on the air supply pipes are opened and ignited, unmanned preheating operation is achieved, the working environment of an operator is improved, the preheating nozzles 3 simultaneously spray and preheat the welding seam 50, the energy utilization rate is improved, the requirement of preheating temperature of 100 +/-10 ℃ is met, accordingly, residual stress inside and on the surface of the welding seam 50 is reduced, and the surface quality of the welding seam is guaranteed.

In the application, the gas supply pipe and the gas supply valve can adopt a commercially available gas pipeline and a commercially available gas valve, one end of the gas supply pipe is communicated with the preheating ring 1, the other end of the gas supply pipe is connected with an external gas source, the gas supply valve is opened, the preheating nozzle 3 is ignited, and high-temperature preheating of the connection part of the door frame 40 and the tower drum 30 by the plurality of preheating nozzles 3 is realized.

Furthermore, the preheating nozzles 3 are arranged on the preheating ring 1 in an angle-adjustable manner.

Further, as shown in fig. 2, a fixing seat 4 is disposed on the preheating ring 1, a spherical recess 5 is disposed on an upper end surface of the fixing seat 4, a first through hole 6 communicated with the preheating ring 1 is disposed at a bottom of the spherical recess 5, a spherical body 7 is disposed at a lower end of the preheating nozzle 3, the spherical body 7 is embedded in the spherical recess 5, a second through hole 9 is disposed in the spherical body 7, and the second through hole 9 is communicated with the preheating nozzle 3, the first through hole 6, and the preheating ring 1.

Preheating nozzle 3 can angle regulation set up on preheating ring 1, it is more nimble to use, through the normal running fit between spherical recess 5 on spheroid 7 and the fixing base 4, can realize the adjustment to preheating nozzle 3 angle, can suitably improve frictional force between spheroid 7 and the spherical recess 5, apply great power to preheating nozzle 3 and just can rotate preheating nozzle 3, guarantee preheating nozzle 3 and preheat the stability of in-process at the flame projecting, coal gas has also been avoided simultaneously and has taken place to leak between spherical recess 5 and spheroid 7.

Further, the lower end of the spherical body 7 has a notch, and the lower end surface of the spherical body 7 is a horizontal surface 10.

Further, the outer side wall of the spherical body 7 is closely attached to the inner wall of the spherical recess 5, and a gap 8 is formed between the lower end of the spherical body 7 and the spherical recess 5.

The arrangement of the gap 8 between the spherical body 7 and the spherical notch 5 and the gap on the lower end of the spherical body 7 ensures that the coal gas can still rapidly pass through the first through hole 6, the gap 8 and the second through hole 9 to be sprayed out to the preheating nozzle 3 in the rotating process of the spherical body 7.

Further, the movable bracket 2 comprises an upper sleeve 21 and a lower sleeve 22 which are sleeved with each other, the upper sleeve 21 is vertically inserted into the lower sleeve 22, and the height of the fixed movable bracket is adjusted by a clamping piece.

Further, as shown in fig. 3, the upper sleeve 21 and the lower sleeve 22 are both hollow structures, two side walls of the upper sleeve 21 are provided with a plurality of groups of first connecting hole groups which are vertically arranged in sequence, each first connecting hole group is composed of two first connecting holes 23 which are correspondingly arranged, the lower sleeve 22 is provided with two second connecting holes 24 which are correspondingly arranged, two first connecting holes 23 and two second connecting holes 24 which penetrate through any first connecting hole group are provided with a tightening bolt 25, and one end of the tightening bolt 25 is provided with a tightening nut 26.

The tightening bolt 25 can penetrate through any one of the first connection hole group and the second connection hole 24, so that the height of the movable support can be adjusted, and the upper sleeve 21 and the lower sleeve 22 can be tightened and fixed by tightening the nut 26.

Further, the lower end of the lower sleeve 22 is provided with a supporting platform 27, and a universal wheel 28 is arranged below the supporting platform 27, so that the welding preheating tool can be conveniently moved.

The present invention is not limited to the above-described embodiments, and the description of the embodiments and the description is only illustrative of the principles of the present invention, and various changes and modifications can be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a frock is preheated in welding of pylon door frame which characterized in that: the preheating device comprises a preheating ring (1) and a plurality of movable supports (2) arranged at the lower end of the preheating ring (1), wherein a plurality of preheating nozzles (3) are arranged on the preheating ring (1), the preheating nozzles (3) are distributed around the extending direction of the preheating ring (1), the preheating ring (1) is communicated with the interior of the preheating nozzles (3), the preheating nozzles (3) are of an L-shaped structure, an air supply pipe is communicated with the preheating ring (1), and an air supply valve is arranged on the air supply pipe.

2. The preheating tool for welding the door frame of the tower frame as recited in claim 1, wherein: the preheating nozzle (3) is arranged on the preheating ring (1) in an angle-adjustable manner.

3. The preheating tool for welding the door frame of the tower frame as recited in claim 2, wherein: be equipped with fixing base (4) on preheating ring (1), the up end of fixing base (4) is equipped with spherical recess (5), the bottom of spherical recess (5) have with preheating ring (1) communicating first through-hole (6), just the lower extreme of preheating nozzle (3) has spherical body (7), spherical body (7) inlay in spherical recess (5), second through-hole (9) have in spherical body (7), just second through-hole (9) communicate with each other with preheating nozzle (3), first through-hole (6), preheating ring (1).

4. The preheating tool for welding the door frame of the tower frame as recited in claim 3, wherein: the lower end of the spherical body (7) is provided with a gap, and the lower end face of the spherical body (7) is a horizontal plane (10).

5. The preheating tool for welding the door frame of the tower frame as recited in claim 4, wherein: the outer side wall of the spherical body (7) is closely attached to the inner wall of the spherical recess (5), and a gap (8) is formed between the lower end of the spherical body (7) and the spherical recess (5).

6. The tower door frame welding preheating tool according to any one of claims 1 to 5, wherein: the movable support (2) comprises an upper sleeve (21) and a lower sleeve (22) which are sleeved with each other, the upper sleeve (21) is vertically inserted into the lower sleeve (22), and the height of the movable support is adjusted and fixed through a clamping piece.

7. The preheating tool for welding the door frame of the tower frame as recited in claim 6, wherein: go up sleeve (21) and lower sleeve (22) and be hollow column structure, it has the first connecting hole group of the vertical setting in proper order of multiunit, every to go up on the both sides wall of sleeve (21) first connecting hole group comprises two first connecting holes (23) that correspond the setting, have two second connecting holes (24) that correspond the setting down on sleeve (22), two first connecting holes (23) and two second connecting holes (24) that run through arbitrary first connecting hole group are equipped with one and screw up bolt (25), it serves and screws up nut (26) to serve of screw up bolt (25).

8. The preheating tool for welding the door frame of the tower frame as recited in claim 7, wherein: the lower end of the lower sleeve (22) is provided with a supporting platform (27), and a universal wheel (28) is arranged below the supporting platform (27).