CN212443887U

CN212443887U - Welding tool clamp for heat exchanger

Info

Publication number: CN212443887U
Application number: CN202020261456.4U
Authority: CN
Inventors: 龚练; 李之琦
Original assignee: Chongqing University of Arts and Sciences
Current assignee: Chongqing University of Arts and Sciences
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2021-02-02
Anticipated expiration: 2030-03-05

Abstract

The utility model discloses a welding tool clamp for a heat exchanger, which comprises a bottom plate, a positioning block for fixing a heat exchanger body and a supporting arm for fixing a special-shaped pipe; the positioning block comprises a left limiting vertical plate and a right limiting vertical plate which are transversely and oppositely arranged, and the inner side surfaces of the longitudinal front ends of the left limiting vertical plate and the right limiting vertical plate are respectively and fixedly provided with a left longitudinal baffle and a right longitudinal baffle; the supporting arms comprise a middle supporting arm for supporting the middle pipe section and a tail end supporting arm for supporting the tail end of the pipe, the tail end supporting arm comprises a first tail end supporting arm and a second tail end supporting arm, and a rotatable cantilever beam supporting arm is arranged at the top end of the second tail end supporting arm; can weld and fix the heat exchanger and the special pipe, and has simple structure and convenient operation.

Description

Welding tool clamp for heat exchanger

Technical Field

The utility model relates to a welding frock field, concretely relates to welding frock clamp for heat exchanger.

Background

A heat exchanger (also called heat exchanger) is a device that transfers part of the heat of a hot fluid to a cold fluid. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied; the inlet and the outlet of the heat exchanger are generally respectively welded with a fixed communicating metal pipe, and for the space bent Z-shaped special pipe, especially when the tail ends of two special pipes needing to be welded are on the same vertical line, a specific tool fixture is lacked for fixing in the prior art, so that the processing is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defect among the prior art, provide a welding frock clamp for heat exchanger, can carry out welded fastening to heat exchanger and mechanical tubes to simple structure, convenient operation, low cost.

The utility model discloses a welding frock clamp for heat exchanger, which comprises a bottom plate, a positioning block for fixing a heat exchanger body and a supporting arm for fixing a special-shaped pipe; the positioning block comprises a left limiting vertical plate and a right limiting vertical plate which are transversely and oppositely arranged, and the inner side surfaces of the longitudinal front ends of the left limiting vertical plate and the right limiting vertical plate are respectively and fixedly provided with a left longitudinal baffle and a right longitudinal baffle; the support arm is including the middle support arm that is used for middle pipeline section to support and the tail end support arm that is used for the pipe tail end to support, the tail end support arm includes first tail end support arm and second tail end support arm, the top of second tail end support arm is provided with rotatable cantilever beam and supports the support arm.

Further, still include the pressure cylinder that is used for compressing tightly fixed heat exchanger body.

Further, the outer side wall of the right limiting vertical plate is fixedly provided with a cylinder mounting vertical plate, the cylinder body of the pressing cylinder is fixed at the top end of the cylinder mounting vertical plate in a mode of inclining downwards from outside to inside along the transverse direction, and the piston rod of the pressing cylinder obliquely downwards presses the upper right corner of the heat exchanger body from the side face.

Further, a rubber pad is fixedly arranged at the front end of the piston rod of the pressing cylinder; the inclination angle of the pressing cylinder is 45 degrees.

Further, support arm in the middle of the support arm includes first middle support arm and second, support arm all includes middle pole setting and the middle upright piece that is fixed in middle pole setting top in the middle of first middle support arm and the second, the sunken formation of middle upright piece top surface and middle pipeline section excircle conformal complex circular arc groove.

Further, the tail end support arm still includes the L shape bottom support board of constituteing by the riser of perpendicular to bottom plate and unsettled diaphragm, first tail end support arm and second tail end support arm are the tail end and found the piece and be fixed in the tail end top surface of diaphragm, and the tail end as second tail end support arm stands the type structure that the piece top formed, the cantilever beam supports the support arm and is the upset piece that the bottom surface is the half cylinder face, and sunken formation hinge groove in the middle of the bottom surface of upset piece, the tail end of type structure is found the protruding embedding hinge inslot in piece top and is articulated through articulated shaft and upset piece, upset piece and the tail end piece who is first tail end support arm all are provided with the circular arc groove with the pipe tail end excircle conformal fit.

The utility model has the advantages that: the utility model discloses a welding frock clamp for heat exchanger through setting up middle support arm and taking rotatable cantilever beam to support the support arm, can carry out space location to two vertical coaxial mechanical tubes of tail end, and the cooperation is used for the locating piece of fixed heat exchanger body, can carry out welded fastening to heat exchanger and mechanical tube to simple structure, convenient operation, low cost.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention during operation;

fig. 3 is another schematic structural diagram of the present invention during operation.

Detailed Description

Fig. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic structural view of the present invention during operation; fig. 3 is another schematic structural diagram of the present invention during operation, and as shown in the figure, the welding fixture for a heat exchanger in the present embodiment includes a bottom plate 1, a positioning block for fixing a heat exchanger body 2, and a supporting arm for fixing a special pipe 3; the positioning block comprises a left limiting vertical plate 4 and a right limiting vertical plate 5 which are transversely and oppositely arranged, and the inner side surfaces of the longitudinal front ends of the left limiting vertical plate and the right limiting vertical plate are respectively and fixedly provided with a left longitudinal baffle 6 and a right longitudinal baffle 7; the supporting arms comprise a middle supporting arm for supporting the middle pipe section and a tail end supporting arm for supporting the tail end of the pipe, the tail end supporting arm comprises a first tail end supporting arm and a second tail end supporting arm, and a rotatable cantilever beam supporting arm is arranged at the top end of the second tail end supporting arm; the heat exchanger body is square, the top surface of the heat exchanger body is provided with an inlet and an outlet, the left and right directions of an operator are transversely represented, and the front and back directions are longitudinally represented, when the heat exchanger is operated, a worker pushes the heat exchanger body from back to front to a position between the left limiting vertical plate and the right limiting vertical plate and tightly cling to the left longitudinal baffle and the right longitudinal baffle, then a special pipe with the tail end positioned at the lower side is placed and fixed, then the cantilever beam supporting arm is rotated to be positioned right above the first tail end supporting arm to form a supporting state, then another special pipe is placed and fixed, so that the front ports of the two special pipes respectively correspond to the inlet and the outlet of the heat exchanger body, and finally the inlet and the outlet of the heat; through setting up middle support arm and taking rotatable cantilever beam to support the support arm, can carry out space positioning to two vertical coaxial mechanical tubes of tail end, the cooperation is used for the locating piece of fixed heat exchanger body, can carry out welded fastening to heat exchanger and mechanical tube to simple structure, convenient operation, low cost.

In the embodiment, the heat exchanger further comprises a pressing cylinder 8a for pressing and fixing the heat exchanger body; the outer side wall of the right limiting vertical plate is fixedly provided with a cylinder mounting vertical plate 8, the cylinder body of the pressing cylinder is fixed at the top end of the cylinder mounting vertical plate in a manner of inclining downwards from outside to inside along the transverse direction, and the piston rod of the pressing cylinder obliquely downwards pushes the upper right corner of the heat exchanger body from the side surface; the heat exchanger body is pressed and fixed through the inclined pressing air cylinder, so that an instable gap between the left limiting vertical plate and the right limiting vertical plate of the heat exchanger body is avoided, a fixing error of the top of the heat exchanger after the heat exchanger enters and exits is caused, the heat exchanger body is enabled to transversely press the left limiting vertical plate, the positioning precision is high, the fixing is firm, and the welding quality is prevented from being influenced after shaking; and the cylinder body of the pressing cylinder penetrates through the cylinder mounting vertical plate and is welded and fixed.

In the embodiment, a rubber pad is fixedly arranged at the front end of the piston rod of the pressing cylinder; the inclination angle of the pressing cylinder is 45 degrees; the rubber pad is the cylinder, does benefit to the protection heat exchanger body, and compresses tightly the inclination of cylinder and be 45 for the packing force direction that compresses tightly the cylinder also is 45, and the heat exchanger body is the square, and the compressive strength of its diagonal is big, does benefit to the protection heat exchanger body.

In this embodiment, the middle support arm includes a first middle support arm and a second middle support arm, the first middle support arm and the second middle support arm both include a middle upright rod and a middle upright block 9 fixed at the top end of the middle upright rod, and the top surface of the middle upright block is recessed to form an arc groove 10 in form fit with the excircle of the middle pipe section; the middle upright rod is a cuboid block, and the middle upright block is fixed on the middle upright rod through bolts, so that the use is flexible, and the adjustment and the replacement are easy.

In this embodiment, the tail end support arm further includes an L-shaped bottom support plate composed of a vertical plate 11 perpendicular to the bottom plate and a suspended transverse plate 12, the first tail end support arm and the second tail end support arm are both tail end vertical blocks and are fixed on the top surface of the tail end of the transverse plate, and are used as a convex structure formed at the top of the tail end vertical block 13 of the second tail end support arm, the cantilever beam support arm 14 is an overturning block with a semi-cylindrical bottom surface, the middle of the bottom surface of the overturning block is sunken to form a hinge groove, the top of the tail end vertical block of the convex structure is convexly embedded into the hinge groove and is hinged with the overturning block through a hinge shaft, and the overturning block 14 and the tail end vertical block 15 as the first tail end support arm are both provided with arc grooves in conformal fit; of course, the maximum overturning angle of the overturning block is 180 degrees, and the hinge structure is simple and stable and convenient to process.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a welding frock clamp for heat exchanger which characterized in that: the heat exchanger comprises a bottom plate, a positioning block for fixing a heat exchanger body and a supporting arm for fixing a special pipe; the positioning block comprises a left limiting vertical plate and a right limiting vertical plate which are transversely and oppositely arranged, and the inner side surfaces of the longitudinal front ends of the left limiting vertical plate and the right limiting vertical plate are respectively and fixedly provided with a left longitudinal baffle and a right longitudinal baffle; the supporting arms comprise a middle supporting arm for supporting the middle pipe section and a tail end supporting arm for supporting the tail end of the pipe, the tail end supporting arm comprises a first tail end supporting arm and a second tail end supporting arm, and a rotatable cantilever beam supporting arm is arranged at the top end of the second tail end supporting arm; still including being used for compressing tightly the cylinder that compresses tightly fixed heat exchanger body.

2. The welding tool clamp for the heat exchanger according to claim 1, wherein: the outer side wall of the right limiting vertical plate is fixedly provided with a cylinder mounting vertical plate, the cylinder body of the pressing cylinder is fixed at the top end of the cylinder mounting vertical plate in a mode of inclining downwards from outside to inside along the transverse direction, and the piston rod of the pressing cylinder obliquely downwards pushes the upper right corner of the heat exchanger body from the side face.

3. The welding tool clamp for the heat exchanger according to claim 2, wherein: a rubber pad is fixedly arranged at the front end of a piston rod of the pressing cylinder; the inclination angle of the pressing cylinder is 45 degrees.

4. The welding tool clamp for the heat exchanger according to claim 1, wherein: the middle support arm includes support arm in the middle of first middle support arm and the second, support arm all includes middle pole setting and the middle upright piece that is fixed in middle pole setting top in the middle of first middle support arm and the second, the sunken formation of middle upright piece top surface is with middle pipeline section excircle form fit's circular arc groove.

5. The welding tool clamp for the heat exchanger according to claim 1, wherein: the tail end support arm still includes the L shape bottom support board of constituteing by the riser of perpendicular to bottom plate and unsettled diaphragm, first tail end support arm and second tail end support arm are the tail end and found the piece and be fixed in the tail end top surface of diaphragm, and the tail end as second tail end support arm stands the type structure that the piece top formed, the cantilever beam supports the support arm and is the upset piece of half cylinder for the bottom surface, and sunken formation hinge groove in the middle of the bottom surface of upset piece, the tail end of type structure is found the protruding embedding hinge inslot in piece top and is articulated through articulated shaft and upset piece, the upset piece all is provided with the pipe tail end excircle conformal complex circular arc groove with regard as the tail end block of first tail end support arm.