KR101751031B1

KR101751031B1 - Movable heater for heating pipe

Info

Publication number: KR101751031B1
Application number: KR1020150143672A
Authority: KR
Inventors: 안양섭
Original assignee: 안양섭
Priority date: 2015-10-14
Filing date: 2015-10-14
Publication date: 2017-06-26
Also published as: KR20170043951A

Abstract

The present invention relates to a movable heater for heating a pipe body (P) capable of easily moving and bending the position plate (2) according to the size of the pipe body (P) An induction heater H is placed above a carrier 1 provided with a caster 12 at a lower portion of the base frame 11 and a plurality of seat plates 22 connected in series so as to be angularly movable by a hinge 22 2 and a pair of guide bars 4 fixed to the drive shaft 3 rotated between the base frame 11 and the seat plate 2 and provided on both sides of the seat plate 2 A first fixing bracket 51 and a second fixing bracket 71 which are fixed to the lower portion and a first movement which is screwed to the driving shaft 3 so as to be slid on the guide bar 4 when the driving shaft 3 rotates, Both ends of the block 52 and the second moving block 72 are rotated Is characterized in that the stationary frame 6 is provided with the first driving link 5 and the second driving link 7 and the center plate 2 and the base frame 11 are connected to each other The outer circumferential surface of the induction heater H and the tubular body P is uniformly spaced to improve the heat radiation efficiency and the heat treatment quickly and smoothly. The entire apparatus can be easily moved, And the like.

Description

[0001] Movable heater for heating pipe [0002]

The present invention relates to a movable heater for heating a tube body. More specifically, the present invention relates to a movable heater for heating a tube body. More specifically, several of the plurality of induction heaters each having an induction heater horizontally disposed thereon are moved above a welded portion of the tube body, To a movable heater for heating a tube body.

Generally, a welding part to be subjected to various welding is preheated before welding to prevent the rapid cooling of the base material after the welding while ensuring smooth welding, (Ie, post-weld heat treatment) is performed to prevent rapid hardening of the welded portion and to eliminate or reduce the internal stress caused by the release of hydrogen and welding.

In order to perform the preheating treatment or the post-heating treatment, a separate heater is required in addition to a welding device for heating the welding part. In the case of large-sized metal tubes such as steel pipes and cast iron pipes, A structure of a heater optimized for heating was required.

As the heater for heating the tube described above, there is a technique in which a preheating burner is provided separately from a welding machine as disclosed in Korean Patent Laid-Open No. 2001-84092 (published on Sep. 6, 2001) A nozzle for spraying a flame is provided at an upper end of a stand placed at a position corresponding to the outer circumferential surface of the tubular body so as to preheat the pipe pipe (= tubular body) by a flame, And the size of the arc burner barrel of the preheating burner is fixed, so that it can not be applied to various sizes of tubes, and there is a bad point that the soot is generated on the surface of the tube body due to the flame caused by the gas.

In addition, as disclosed in Korean Utility Model No. 322892 (published on Aug. 14, 2003), a heat conductive pad is placed on a welded portion of a tube (= tubular body) The casing is rotatably connected by a folding jig and a clamp is provided on the opposite side of the folding section so as to enclose the tube with a casing divided into two, which can be used for a small-sized tube and a tube, And it was difficult to mount it on the tube.

Also, as disclosed in Korean Patent Publication No. 90566 (published on August 17, 2012) or Published Patent No. 201855827 (published on May 9, 2014), a ceramic heater is disposed inside the case, A structure in which a heat insulating material is interposed between a heater and a case, or a silica cloth (heat insulating material) is covered on the outside of the case while an inner case is interposed between the pipe heater and the case, However, in order to apply it to the pipe body, it is necessary to attach the pipe body around the circumferential surface of the welded portion of the pipe body, so that a large number of devices are required. As a result, It has been difficult to maintain and repair from the time of installation. 90566 and 201455827, since the tube rotates, the electric wires connected to several heat treatment apparatus are twisted according to the rotation of the tube body. To prevent this, a regulator for controlling power supply to the heater is used as a turning regulator It is troublesome to control the number of heat treatment apparatuses and it can not be moved easily if necessary. In addition, there is a problem in that the equipment cost is increased.

KR 10-2001-0084092 A 2001. 9. 6. KR 20-0322892 Y1 Aug 14, 2003. KR 10-2012-0090566A Aug 17, 2012. KR 10-2014-0055827 A 2014. 5. 9.

The present invention is based on the development of a new technology for solving all the problems of the prior art. The conventional welding preheating or postheating apparatus can not be applied to various sizes of tubes, It has a problem that the electric wires connected by several heat treatment devices attached to the outer circumferential surface of the rotating tubular body are twisted together with the problem that they can not be easily moved as needed. An angle plate in which an induction heater is placed can be bent or expanded according to the size of various tubes by the operation of a rotary knob or the operation of a driving motor so that the degree of bending can be adjusted according to tubular bodies of various sizes, Easy to move, installation, maintenance, repair and manufacturing cost The invention that wishes to provide a removable heater for heating the tube can be minimized to a problem to be solved.

According to the present invention, there is provided a movable heater for heating a tube, wherein the movable heater for heating a tube according to the present invention is provided above a carrier provided with a caster below the base frame, The fence is upwardly protruded while rotating around the edge so as to be angularly movable by the hinge, and is rotatably installed on the upper part of the base frame between the base frame and the seat plate And a pair of guide bars fixed to the upper portion of the base frame at both sides of the drive shaft. In this case, among the several seat plates connected in series, 1 Mounting bracket and drive shaft A pair of opposing first driving links provided on both sides of the first moving block so as to be pivotally connected to the first moving block installed to be slidably carried by the guide bar when the driving shaft rotates, And a stationary frame connected to the base and the base so as to be spaced apart from each other.

Here, a second fixing bracket fixed to the lower portion of the seat plate located at opposite ends of the plurality of seat plates, respectively, and a second fixing bracket fixed to the driving shaft in the longitudinal direction so as to be slidably mounted on the guide bar when the driving shaft rotates, And two pairs of opposing second driving links provided on both sides of the second moving block so as to be rotatable.

According to the concrete means for solving the above-mentioned problems, the movable heater for heating the tube heater of the present invention comprises a plurality of seat plates, each of which is provided with a single induction heater, connected by a hinge, and manually or automatically It is possible to bend the tube so as to be close to the outer surface of the tube in the preheating or post heat treatment depending on the size of the tube depending on the degree of rotation of the rotating shaft and to improve uniformity of heat efficiency and heat treatment And can easily be moved and stored on the welded part of the pipe when the pipe is used, and can be easily moved on the welded part of the pipe when the pipe is used.

As described above, several of the induction heaters, each of which has the induction heater, are bent according to the diameter of the tube, so that the degree of bending can be controlled and the bending state can be maintained at a desired degree of bending. It is possible to reduce the number of induction heaters to be used together with the advantage that the electric wire for supplying electric power to the induction heater is not twisted even if the tube body is rotated by locating the induction heater uniformly on the outer peripheral surface of the tube body at the lower portion of the tube. Since several induction plates are installed at the upper part of the carriage where the induction heater is installed and the wheels are installed at the lower part of the carriage, it is very easy to move the device, so that it is easy to install and to recover and thus the ease of use can be improved. Expected effects such as maximization Are all inventions.

Figs. 1A, 1B, and 1C are perspective views showing a preferred example of the present invention. Fig.
2 is a perspective view showing a state in which several seat plates connected in series by a hinge are separated in the present invention;
FIG. 3 is a perspective view showing a part of the present invention,
4 is an exemplary view showing a state in which the first drive link and the first movable block are engaged with each other in the present invention;
FIG. 5 is an exemplary view showing a combined state of the seat plate and the second moving block by the second driving link in the present invention
Fig. 6 is a view showing an example in which a handle is mounted by means of rotating a drive shaft in the present invention
Fig. 7 is a diagram showing an example in which a drive motor is mounted as a means for rotating a drive shaft in the present invention
8 is an example showing the degree of bending of the seat plate of the present invention according to the size of the tube.
Fig. 9 is an example showing a state in which the welded portion of the pipe body is preheated or postheated by the present invention

In the present invention, it is possible to facilitate the movement and to bend (bend) some of the plurality of the placement plates, each of which has the induction heater horizontally arranged, close to the outer peripheral surface of the tube on the welded portion of the tube, The present invention relates to a movable heater for heating a tube, which can be heated, and will be described in more detail with reference to the drawings.

1A to 1C, the movable heater for heating a tube according to the present invention includes a castor 12, which is freely rotatable and fixed at a lower portion of a base frame 11, A carrier 1 is provided to be freely moved and fixed. The carrier 1 is horizontally extended on the upper side as shown in Fig. 1 (a), or welded as shown in Fig. 1b or 1c, The number of the induction heaters H to which the induction heaters H are attached is controlled by controlling the bending of the tubes P depending on the diameter of the tube P which requires heating.

The fence 21 is formed to protrude upward so that the induction heater H can be prevented from being detached from the seat plate 2 while the fence 21 is protruded upward while the edge of the induction heater H is turned, As shown in FIG. 2, several horseshoe plates 2 are connected in series by a hinge 22, and each horseshoe plate 2 is connected to each of the horseshoe plates 2 so as to have a predetermined gap therebetween so as to be angularly reciprocated.

The induction heater H is placed above the carrier 1 having the base frame 11 on which the caster 12 is installed as described above and is arranged in a line so as to be angularly moved by the hinge 22, A plurality of interposer plates 2 connected to each other are provided between the base frame 11 of the carrier 1 and the several seat plates 2, Means are provided to bring the induction heater H, which is placed on the face plate 2, into close contact with the outer circumferential face of the body P by bending the adjacent face plate 2 around the hinge 22.

That is, as shown in Figs. 2 to 3, the present invention is characterized in that, in the upper part of the base frame 11 of the carrier 1, bearings are supported in the same direction as the direction in which several of the seat plates 2 are connected in series, And a pair of guides (not shown) fixed to the upper portion of the base frame 11 in the same direction as the direction in which several of the seat plates 2 are connected in series on both sides of the drive shaft 3, And a pair of guide bars 4 which are coupled to the drive shaft 3 and the pair of guide bars 4 and which are arranged at opposite ends of the pair of guide plates 2, A fixed frame 6 for connecting and fixing the base plate 11 of the carrier 1 with the seat plate 2 positioned at the center of the several seat plates 2, .

4, the pair of first driving links 5 are disposed in the lower part of the seat plate 2 located at opposite ends of the plurality of seat plates 2 connected to each other, A first moving block 52 which is screwed to the driving shaft 3 so as to be opposite to the driving shaft 3 so as to be slidably carried by the guide bar 4 during rotation of the driving shaft 3, And the fixed frame 6 is provided with one or two (the total number of the seat cushions 2) located at the center of the several seat cushions 2, (Not shown), but two even water surfaces are suitable), and the base frame 11 are connected to each other with a predetermined gap therebetween.

In the present invention, both ends of the drive shaft 3 are installed to be rotatably mounted on the first moving block 52, which is screwed to the seat plate 2 and the drive shaft 3 and slides on the guide bar 4, 2 and 3 and Fig. 5, a number of the seat cushions 2, which are connected in series as shown in Figs. 2 and 3 and Fig. 5, are provided for smooth operation while allowing several seat cushions 2 to be bent as shown in Figs. 1B and 1C. A second fixing bracket 71 fixed to the lower portion of the seat plate 2 located at opposite ends of the driving shaft 3 and fixed to the driving shaft 3 so as to face the driving shaft 3 in the longitudinal direction, Two pairs of opposing second driving links 7 may be further provided on both sides of the second moving block 72 installed to be slidably transported on the guide bar 4.

The first driving link 5 and the first fixing bracket 51 and the first moving block 52 and the second driving link 7 and the second fixing bracket 71 and the second driving link 5 as described above, When the moving block 72 is provided, the driving shaft 3 is positioned at the center in the longitudinal direction as shown in FIG. 2, and the male thread having the same diameter and pitch on both sides and having different helical directions is formed, 1 moving block 52 are respectively screwed to each other and a coupling 33 opposed to both sides of the central shaft 31 at the drive shaft 3 so as to have the same diameter and pitch And a pitch larger than that of the male thread of the central shaft 31 is formed so as to be divided into a pair of outer shafts 32 in which the second moving blocks 72 facing each other are screwed to each other .

6, a handle 8 may be provided to rotate the entire drive shaft 3, or a drive motor 9 may be installed as shown in FIG. 7 so as to rotate the entire drive shaft 3 Or may be configured to rotate the drive shaft 3 manually by turning the handle 8 or by applying electricity to the drive motor 9 automatically.

In the movable heater for heating the tube (P) of the present invention constructed as described above, the drive motor (9) is operated by turning the handle (8) by hand or applying electric power by a switch operation or the like so that the drive shaft (3) And the first moving block 52 or the second moving block 72 in which the driving shaft 3 rotationally driven is screwed to the driving shaft 3 by rotation rotates the pair of guide bars 4 And the other side of the first drive link 5 or the second drive link 7, which is rotatably connected to the first moving block 52 or the second moving block 72, A first fixing bracket 51 fixed to the lower portion of the base frame 11 and an installation plate 2 pivotally mounted on the second fixing bracket 71 and positioned in the center of the plurality of the installation plates 2, 8, a number of the seat plates 2 connected and fixed to the fixed frame 6, Therefore, the diameter size of the tube (P) causes flexion until a uniform proximity to the outer peripheral surface of the tube (P).

Thereafter, electricity is supplied to the induction heaters H, which are positioned by the lower fixed magnet M, on several of the plurality of baffle plate 2, so that an alternating current flows through the coils in the induction heater H, An alternating magnetic field is generated. At this time, a swirling current is generated in the tube P, which is a conductor, by the electromagnetic induction phenomenon. Heat is radiated from the tube P by the divergence generated by the swirling current, When the tube P is rotated and driven before and after the welding by the rotary driving device R supporting the tube P at the lower portion of the tube P as shown in Fig. 3B, the induction heater H preheats the welded portion, You can do it.

As described above, according to the present invention, a large number of casters 12 are installed under the base frame 11 of the carrier 1, so that the mobility can be easily moved to a desired place. Several induction plates 2 are bent by the driving motor 9 or the drive motor 9 to uniformly bring the induction heater H placed on the face plate 2 to the outer peripheral surface of the tubular body P, It is possible to maximize the efficiency of heat radiation, and it is an excellent invention with many efficacies.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that the scope of the claims is not limited to the examples but covers the scope of the claims and the scope of equivalents thereof.

1: carrier 11: base frame
12: Caster 2: Anchor plate
21: Fence 22: Hinge
3: drive shaft 31: central shaft
32: outer shaft 33: coupling
4: guide bar 5: first drive link
51: first fixing bracket 52: first moving block
6: fixed frame 7: second driving link
71: second fixing bracket 72: second moving block
8: handle 9: drive motor
P: tube H: induction heater
M: Fixed magnet R: Rotary driving device

Claims

A carrier 1 provided with a caster 12 at a lower portion of the base frame 11 so as to be movable and fixed,
The fins 21 protrude upward from the edge of the carrier 1 so that the induction heater H is positioned on the upper portion of the carrier 1 and are connected to each other by a hinge 22 A plurality of seat plates 2,
A drive shaft 3 rotatably mounted on the upper portion of the base frame 11 between the base frame 11 and the seat plate 2,
A pair of guide bars 4 fixed to the upper portion of the base frame 11 at both sides of the drive shaft 3,
A first fixing bracket 51 fixed to the lower portion of the seat plate 2 positioned at opposite ends of the plurality of seat plates 2 connected in series and a first fixing bracket 51 screwed to the driving shaft 3 in the longitudinal direction A pair of opposing first driving links 5 provided on both ends of the first moving block 52 so as to be slidably moved on the guide bar 4 when the driving shaft 3 rotates,
A stationary frame 6 which is connected to the center of the several seat plates 2 so as to be spaced apart from each other by an interval between the seat frame 2 and the base frame 11,
A second fixing bracket 71 fixed to the lower portion of the seat plate 2 located at opposite ends of the several seat plates 2 connected to each other in a row and a second fixing bracket 71 fixed to the driving shaft 3 in the longitudinal direction, And two pairs of opposing second driving links 7 provided on both ends of the second moving block 72 so as to be rotatably supported by the second moving block 72 mounted on the guide bar 4 when the driving shaft 3 rotates Features a removable heater for tube heating.

delete

The method of claim 1,
A central shaft 31, which is positioned at the center in the longitudinal direction of the drive shaft 3 and has male threads having the same diameter and pitch on both sides and different in helical direction from each other, Wow,
A male thread is formed in the drive shaft 3 on both sides of the central shaft 31 and is coupled with the coupling 33 so as to have the same diameter and pitch and different in helical direction, A pair of outer shafts 32 whose pitches are larger than those of the second moving blocks 72,
Further comprising a handle (8) or a drive motor (9) provided at an outer end of the one outer shaft (32) so as to rotate the entire drive shaft (3).