CN115229490A

CN115229490A - Assembling method of cooling tower heat exchanger

Info

Publication number: CN115229490A
Application number: CN202210780173.4A
Authority: CN
Inventors: 盛建强
Original assignee: Jiangyin Chensheng Automotive Accessories Co ltd
Current assignee: Jiangyin Chensheng Automotive Accessories Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-10-25
Anticipated expiration: 2042-07-04
Also published as: CN115229490B

Abstract

The invention discloses an assembling method of a cooling tower heat exchanger, which comprises the following steps: s100, laying a clamping frame and a straight pipe; s200, inserting a calibration block at the end part of the straight pipe, and connecting adjacent calibration blocks through a calibration rope; s300, pulling the calibration block to tension the calibration rope; s400, extracting the calibration block from the straight pipe; s500, locking and connecting the clamping frame with the straight pipe; s600, fixing a bent pipe at the end part of the straight pipe. This assembly method of cooling tower heat exchanger need not the workman and aims at the perforation on the gusset plate with the straight tube along straight tube length direction to loop through each perforation with the straight tube by the cooperation of many workers, only need insert the straight tube at the straight tube tip with the calibration block, the removal through the calibration block drives the straight tube and carries out radial movement, and the adjusting position has consequently not only reduced the cost of labor, has improved the packaging efficiency moreover.

Description

Assembling method of cooling tower heat exchanger

Technical Field

The invention relates to the technical field of production of cooling tower heat exchangers, in particular to an assembling method of a cooling tower heat exchanger.

Background

The cooling tower is a device which uses water as a circulating coolant, absorbs heat from a system and discharges the heat to the atmosphere so as to reduce the temperature of a high-temperature fluid medium in a heat exchanger, wherein the cooling is an evaporation heat dissipation device which uses the principles of heat exchange generated after the flowing and the contacting of water and air to generate steam, the heat is volatilized by the steam to carry away the heat so as to achieve the purposes of evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like to dissipate the preheating generated in the industry or a refrigeration air conditioner so as to reduce the temperature of the fluid medium, so that the normal operation of the system is ensured.

The heat exchanger is an essential important part in the cooling tower and is mainly used for allowing high-temperature fluid media to flow, and the high-temperature fluid media exchange heat with air and cooling water through the pipe wall of a heat exchange pipe in the heat exchanger to achieve the purpose of cooling. In the prior art, a heat exchanger usually comprises a plurality of straight pipes with parallel axial leads, one end of each two adjacent straight pipes is connected through a U-shaped bent pipe, the sizes (external diameter and wall thickness) of the straight pipes are mainly phi 19mm multiplied by 2mm, phi 25mm multiplied by 2.5mm and phi 38mm multiplied by 2.5mm seamless steel pipes and phi 25mm multiplied by 2mm and phi 38mm multiplied by 2.5mm stainless steel pipes, and the standard pipe lengths are 1.5, 2.0, 3.0, 4.5, 6.0, 9.0m and the like. In order to reinforce the structure of the heat exchanger, the heat exchanger further comprises a reinforcing frame, the reinforcing frame comprises a plurality of reinforcing plates which are distributed at intervals along the length direction of the straight pipe, a plurality of through holes for the straight pipe to penetrate through are densely distributed on the reinforcing plates, and the reinforcing plates are fixedly connected through reinforcing rods.

In the assembly production process of the heat exchanger, the reinforcing plates and the reinforcing rods are usually welded fixedly in advance, after a reinforcing frame is formed, because the straight pipes are long, a plurality of workers are needed to operate in a matched mode, each worker determines the position along the distribution direction of the reinforcing plates, workers and the reinforcing plates are distributed at intervals in sequence, the straight pipes sequentially penetrate through the through holes in the reinforcing plates at the head ends by the workers at the head ends, the straight pipes are adjusted in position by the other workers in an auxiliary mode, after the straight pipes are aligned with the through holes in the reinforcing plates, the straight pipes penetrate through the through holes in the reinforcing plates adjacent to the straight pipes, after the straight pipes penetrate through all the reinforcing plates, the ends of the straight pipes are welded with the U-shaped bent pipes by the workers at the first ends, and the heat exchanger required by the cooling tower is finally assembled.

Known by the equipment production process of above-mentioned heat exchanger, among the prior art, the production of heat exchanger needs the coordinated cooperation operation of many workman, not only increased the human cost, and need many workman to pass the perforation on each gusset plate with the straight tube in proper order, it is in large quantities to perforate, lead to the packaging efficiency low, furthermore, because the length of heat transfer straight tube is great, when the equipment, need to have the space of placing of straight tube and the space of placing of gusset frame, and place the space length direction along the straight tube (or gusset frame) and distribute and link to each other, lead to whole equipment space length too big, shared operating space is great during consequently the equipment, increased the requirement to factory building inside operating space, further increased manufacturing cost, influence other workman's activity.

Accordingly, there is a need for an improved method of assembling a cooling tower heat exchanger in the prior art.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides an assembling method of a cooling tower heat exchanger, which reduces the operation space so as to reduce the requirement on the internal space of a factory building and simultaneously reduces the labor cost and improves the production efficiency.

In order to realize the technical effects, the technical scheme of the invention is as follows: a method of assembling a cooling tower heat exchanger, comprising the steps of:

s100, laying a plurality of layers of clamping frames with the interval of the outer diameter of the straight pipe and a plurality of layers of straight pipes which are positioned between the adjacent clamping frames and are attached and distributed side by side along the vertical direction;

s200, inserting a calibration block which can move along the distribution direction of each layer of straight pipe at the end part of each layer of straight pipe, and connecting adjacent calibration blocks through calibration ropes with the same length;

s300, pulling the calibration blocks in each layer of calibration block to enable the calibration ropes between the calibration blocks to be tensioned;

s400, extracting the calibration block from the straight pipe;

s500, locking and connecting the clamping frame with the straight pipe;

s600, fixing a bent pipe at the end part of the straight pipe, and combining the straight pipe, the outer pipe and each clamping frame to form the heat exchanger.

When the cooling tower is assembled by using the cooling tower heat exchanger assembly method of the technical scheme, workers only need to insert the calibration blocks into the straight pipe after the clamping frames and the straight pipe are laid, the calibration blocks are dragged, the straight pipe is driven to move between the clamping frames on the upper side and the lower side of the straight pipe until the calibration ropes between all the calibration blocks are tensioned, and because the calibration ropes between every two adjacent calibration blocks are the same in length, the calibration blocks in each layer of calibration block are distributed at equal intervals, so that the straight pipes in each layer of straight pipe are distributed at equal intervals, the calibration blocks are evacuated again, the calibration blocks are separated from the straight pipe, after the clamping frames are locked and connected with the straight pipe, the bent pipe is welded at the end part of the straight pipe, and the cooling tower heat exchanger can be formed by combining the straight pipe and the clamping frames. When adopting this mode equipment cooling tower heat exchanger, only need one to two workman to accomplish the laying of holding frame, straight tube, the inserting of calibration piece, draw, take out from and the weldment work of straight tube and outer tube, compare in prior art need many workers to transmit the perforation that the straight tube passed the gusset plate with the straight tube in proper order, then in straight tube tip welding return bend, the human cost has been saved to this mode, and need not to aim at the straight tube to perforate and pass, and the equipment is convenient, has improved production efficiency.

Preferably, in the step S100, each layer of the clamping frame and each layer of the straight pipe are sequentially laid at intervals from bottom to top.

By adopting the technical scheme, the clamping frame and each layer of straight pipes are paved at intervals, so that in the work of paving the clamping frame and the straight pipes, after the bottom clamping frame is paved, the straight pipes are paved on the clamping frame, and then the upper layer of clamping frame is paved on the layer of straight pipes, namely, the layer of straight pipes is utilized to support the upper layer of clamping frame, so as to facilitate the paving work; after the upper layer of the straight pipe is laid, another layer of the straight pipe can be laid on the upper layer of the straight pipe, and the other layer of the straight pipe is laid conveniently through the layer of the straight pipe. So, according to above-mentioned mode, straight tube and holding frame from the bottom up lay in proper order, and the laying object of lower floor supports the laying object on upper strata to conveniently lay work, need not to carry out auxiliary stay with the help of other appurtenance, the device that the equipment needs to use is simplified in convenient operation, reduces the equipment cost, improves the packaging efficiency.

Preferably, in step S100, each layer of straight pipes is rolled and laid on a holding frame below the straight pipes.

Through adopting above-mentioned technical scheme, on laying the straight tube on the holding frame, adopt rolling mode, lay the straight tube on the holding frame, lay the in-process promptly, the straight tube rolls on the holding frame, adopts this mode, compares in prior art, and the straight tube passes the perforation on the gusset plate along being on a parallel with its length direction, can effectively reduce the length direction equipment space that the in-process of laying required the taking, reduces the requirement to length direction between the group loading car, makes things convenient for other workman's activity.

Preferably, among the multilayer holding frame of laying in step S100, the holding frame that is located the bottom is the chassis, and all the other holding frames are the locking frame, the locking frame includes along being on a parallel with a plurality of locking strips that calibration block inserted the direction and distribute side by side, the bottom surface of locking strip is provided with a plurality of locking sunken, the locking sunken with the next-door neighbour lay in the straight tube one-to-one of locking frame below, the locking sunken straight tube that is used for its correspondence of radial locking.

Through adopting above-mentioned technical scheme, among the multilayer holding frame, the holding frame of laminating in the straight tube top is the locking frame, when with holding frame and straight tube locking connection, among the locking frame, the locking of locking strip bottom surface is sunken to be contacted with the upper portion pipe wall of straight tube to the realization is to the radial locking of straight tube, prevents its radial position skew, guarantees the package assembly steadiness of cooling tower heat exchanger.

Preferably, the locking bar is fixedly connected with a reinforcing bar extending along the distribution direction of the locking bar, and the bottom surface of the reinforcing bar and the bottom surface of the locking recess are located on the same curved surface.

Through adopting above-mentioned technical scheme, utilize the reinforcement strip increased with the area of contact on straight tube upper portion to strengthen the locking effort, further improved the structure steadiness of cooling tower heat exchanger.

Preferably, in step S200, the calibration block is connected to a calibration frame, the calibration frame slides on the pavement along an insertion direction of the calibration block, and the calibration block is in sliding fit with the calibration frame.

Through adopting above-mentioned technical scheme, utilize the convenient a plurality of calibration blocks of driving simultaneously of calibration frame to remove for the length direction that a plurality of calibration blocks can follow the straight tube simultaneously removes, makes a plurality of calibration blocks insert simultaneously in a plurality of straight tubes or a plurality of calibration blocks break away from the straight tube simultaneously, so, is favorable to improving packaging efficiency.

Preferably, a plurality of layers of strip-shaped openings are arranged on the calibration frame and distributed side by side along the vertical direction, the strip-shaped openings correspond to the plurality of layers of straight pipes one to one and are the same as the heights of the straight pipes corresponding to the step S100 and the step S200, and the calibration block is in sliding fit with the calibration frame through the strip-shaped openings.

By adopting the technical scheme, the height of each layer of calibration block is the same as that of each layer of laid straight pipe through the strip-shaped port arranged on the calibration frame, so that the calibration block is inserted into the straight pipe, and the assembly efficiency is improved; meanwhile, the strip-shaped opening is utilized to facilitate the calibration block to slide on the calibration frame, so that the calibration block drives the straight pipes in each layer of straight pipes to move, and the positions of the straight pipes are adjusted.

Preferably, in each layer of calibration block, the calibration block at the tail end is connected with the calibration frame through a limiting rope, the calibration block at the head end is detachably connected with the calibration frame through a locking rope, the limiting rope and the locking rope between the step 300 and the step S400 are in a tensioning state, and the axial lead of the calibration block in each layer of calibration block is coincided with the axial lead of the straight pipe in each layer of straight pipe in a one-to-one correspondence manner.

Through adopting above-mentioned technical scheme, utilize spacing rope and locking rope to mutually support, after carrying out step S300, spacing rope, locking rope and calibration rope all are in the tensioning condition, guarantee the position stability of each calibration piece this moment, guarantee then the position stability of each straight tube this moment.

Preferably, the calibration block in step 200 includes an insertion portion disposed at a side of the calibration frame adjacent to the laying position of the clamping frame, and the insertion portion is configured to be in clearance fit with the straight pipe corresponding to the calibration block.

Through adopting above-mentioned technical scheme, make things convenient for the grafting piece to insert in the straight tube, on avoiding the grafting piece to keep away from the straight tube simultaneously, drive the straight tube and be axial displacement, so, guaranteed the stability of straight tube position in the assembling process.

Preferably, the calibration block in step 200 includes disk portions with the same outer diameter of the straight pipes, the disk portions in the calibration blocks of each layer are sequentially attached before step S200, the axial lines of the calibration blocks in the calibration blocks of each layer are coincided with the axial lines of the straight pipes in each layer of the straight pipes in a one-to-one correspondence manner, and the calibration block located at the tail end is arranged at one end of the strip-shaped opening.

By adopting the technical scheme, after the disc parts are arranged on the calibration blocks, when the calibration blocks on the same layer are close to each other, namely in the calibration blocks on the same layer, the disc parts of the adjacent calibration blocks are mutually abutted, and the outer diameters of the disc parts are the same as the outer diameter of the straight pipe, so that the axial lead of the disc part of one of the calibration blocks is only required to be aligned with the straight pipe corresponding to the calibration block, and the other calibration blocks can be ensured to be aligned with the straight pipes which respectively need to be aligned; and the calibration block at the tail end in the layer of calibration block slides to the end part of the strip-shaped opening, and other calibration blocks are drawn close to the calibration block, and the calibration block is aligned with the straight pipe laid after the step S100, so that the calibration frame is convenient to move, and each calibration block is inserted into the straight pipe, therefore, the operation is convenient, and the production efficiency is improved.

Preferably, the step S100 is preceded by a step S000 of pre-laying a positioning assembly on the laying ground to fix the horizontal laying position of the clamping frame and the sliding direction of the calibration frame.

Through adopting above-mentioned technical scheme, utilize the fixed centre gripping frame' S of locating component laying position and the slip direction of alignment jig to when carrying out step S200, make things convenient for in the accurate inserting straight tube of each alignment block, through the position that drags the alignment block, change the position of straight tube between adjacent locking frame.

Preferably, the positioning assembly comprises a positioning slide rail fixed on the laying ground and in sliding fit with the clamping frame and a connecting frame fixed on the laying ground, the connecting frame is detachably connected with a positioning rod extending along the vertical direction, and the clamping frame is provided with a positioning through hole in plug-in fit with the positioning rod.

By adopting the technical scheme, the connecting rod can be conveniently disassembled by utilizing the connecting frame fixed on the laying bottom surface, after the positioning rod is installed, the horizontal laying position of the clamping frame can be determined through the inserting and connecting cooperation of the positioning rod and the positioning through hole, and the sliding direction of the calibration frame is determined through the positioning slide rail in sliding fit with the calibration frame, so that the calibration block is inserted into the straight pipe when the step S200 is executed.

In summary, compared with the prior art, the assembling method of the cooling tower heat exchanger has the advantages that after the clamping frame and the straight pipe are laid, the calibration block is inserted into the end part of the straight pipe and moves the calibration block, after the position of the straight pipe is adjusted, the calibration block is separated from the straight pipe, the straight pipe and the clamping frame are locked, the bent pipe can be welded, the assembly is completed, workers do not need to align the straight pipe with the through hole in the reinforcing plate along the length direction of the straight pipe, the straight pipe sequentially passes through the through holes by matching of a plurality of workers, the calibration block is inserted into the straight pipe only at the end part of the straight pipe, the straight pipe is driven to move radially by the movement of the calibration block, and the position is adjusted, so that the labor cost is reduced, and the assembling efficiency is improved.

Drawings

FIG. 1 is a schematic illustration of a prior art cooling tower heat exchanger assembly process;

FIG. 2 is a schematic view of the laying positioning module according to embodiment 1;

FIG. 3 is a schematic view of the positioning assembly of FIG. 2 after the locking bracket is laid thereon;

FIG. 4 is a schematic view of the locking frame of FIG. 3 after the bottom frame is laid thereon;

FIG. 5 is a schematic structural view of the straight pipe laid on the underframe of FIG. 4 (the unused locking frame, clamping frame and collar are omitted);

FIG. 6 is a schematic structural view of the straight pipe of FIG. 5 after the locking frame is laid thereon;

FIG. 7 is a schematic structural view of the locking frame of FIG. 6 after a straight pipe is laid;

FIG. 8 is a schematic structural view of the straight pipe of FIG. 7 after the locking frame is laid;

FIG. 9 is a schematic view of the construction of the completed laying of the underframe, the straight pipe and the locking frame;

FIG. 10 is a schematic view of the alignment fixture moved until the alignment block is inserted into the straight tube;

FIG. 11 is a schematic view of the arrangement of the calibration block being pulled to place the cable in tension;

FIG. 12 is a schematic view of a configuration for pulling the alignment jig to move to disengage the alignment block from the straight tube;

FIG. 13 is a schematic structural view of the alignment tube, the bottom frame and the locking frame before locking connection (omitting the calibration frame) on the basis of FIG. 12;

FIG. 14 is a schematic view of the straight tube, the bottom frame and the locking frame in locked connection with each other in FIG. 13;

FIG. 15 is a front view of FIG. 14;

FIG. 16 is a schematic view of the structure of FIG. 14 after welding a bent pipe to the end of the straight pipe;

FIG. 17 is a schematic view of the structure of FIG. 16 from another perspective;

FIG. 18 is a schematic view of the structure of a calibration jig used in example 1;

FIG. 19 is an enlarged view of portion A of FIG. 18;

FIG. 20 is an exploded schematic view of FIG. 18;

FIG. 21 is a schematic view of the structure of a calibration block used in embodiment 1;

FIG. 22 is a schematic structural view of a lock bracket used in embodiment 1;

FIG. 23 is a schematic structural view of a lock bracket used in embodiment 2;

FIG. 24 is a bottom view of FIG. 23;

in the figure: 100. the fixing device comprises a straight pipe, 200 degrees of bent pipes, 300 degrees of reinforcing plates, 301 degrees of through holes, 400 degrees of reinforcing rods, 500 degrees of clamping frames, 501 degrees of bottom frames, 502 degrees of locking frames, 503 degrees of positioning through holes, 504 degrees of connecting rods, 600 degrees of ropes, 601 degrees of aligning ropes, 602 degrees of limiting ropes, 603 degrees of locking ropes, 700 degrees of aligning blocks, 701 degrees of inserting portions, 702 degrees of circular disc portions, 703 degrees of sliding portions, 704 degrees of circular shaft portions, 705 degrees of limiting portions, 800 degrees of locking bars, 801 degrees of locking recesses, 900 degrees of reinforcing bars, 110 degrees of connecting bars, 120 degrees of lantern rings, 130 degrees of aligning frames, 131 degrees of bar-shaped openings, 132 degrees of head end convex shafts, 133 degrees of tail end convex shafts, 134 degrees of tail end limiting covers, 140 degrees of positioning assemblies, 150 degrees of positioning sliding rails, 160 degrees of connecting frames, 161 degrees of connecting rods, 162 degrees of plug-in rods, 170 degrees of positioning rods, 180 degrees of sliding blocks, 190 degrees of cross bars, 210 degrees of locking frames, 220 degrees of locking sleeves, 230 degrees of lantern rings.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, when assembling a cooling tower heat exchanger in the prior art, a reinforcing frame is first placed on the ground, the reinforcing frame includes four reinforcing plates 300 that are vertically arranged and are horizontally distributed at intervals, a plurality of through holes 301 are densely distributed on the reinforcing plates 300, the through holes 301 are circular through holes, the inner diameters of the through holes 301 on the reinforcing plates 300 are the same, the axial leads of the through holes 301 are coincided with each other in a one-to-one correspondence manner, and the distribution manner of the through holes 301 on the reinforcing plates 300 is as follows: the number of the perforations 301 in each layer is 14, 15, 14, 15 and 15 in sequence from bottom to top, the total number of the perforations 301 is 116, the perforations 301 in each layer are distributed at equal intervals along the height direction of the reinforcing plate 300, the perforations 301 in each layer of the perforations 301 are distributed at equal intervals along the length direction of the reinforcing plate, the vertical interval of the perforations 301 in each layer is half of the horizontal interval between the perforations 301 in each layer of the perforations 301, in addition, three non-collinear perforations 301 which are adjacent to each other are selected, and the circle center connecting lines of the same end orifices of the three perforations 301 enclose an isosceles right triangle. The reinforcing frame further comprises four reinforcing rods 400, wherein the four reinforcing rods 400 extend along the length direction of the reinforcing plate 300 and are respectively fixedly connected with the four corners of the reinforcing plate 300 in a welding manner.

After the reinforcing frame is placed, placing the straight pipes 100 on the same side of the reinforcing plates 300 in the reinforcing frame, stacking the straight pipes 100 on the ground, wherein the length direction of the straight pipes 100 is consistent with the distribution direction of the reinforcing plates 300, arranging a reasonable number of assembly workers according to the number of the reinforcing plates 300 in the reinforcing frame to complete the assembly of the cooling tower heat exchanger, wherein the arrangement number of the assembly workers is the number of the reinforcing plates plus 2, and as shown in fig. 1, four reinforcing plates 300 are arranged, six workers are required to be arranged, wherein three workers are arranged between two adjacent reinforcing plates 300, and the rest three workers are arranged at two ends of the straight pipes 100, wherein workers far away from the reinforcing frame are responsible for transmitting the straight pipes 100 to workers close to the reinforcing frame 100, workers close to the reinforcing frame 100 penetrate the straight pipes 100 through the through holes 301 in the reinforcing plates 300 at one end of the reinforcing frame, and the workers between the adjacent reinforcing plates 300 are matched with each other, and the straight pipes 100 sequentially pass through the through holes 301 in the rest three reinforcing plates 300 while the straight pipes 100 are transmitted; and the remaining worker cooperates with the worker near the reinforcement frame 100 to weld and fix the bent pipe 200 to the end of the straight pipe 100, and finally the straight pipe 100, the bent pipe 200 and the reinforcement frame are assembled to form the heat exchanger.

It should be noted that, the number of the reinforcing plates 300 may be correspondingly changed and adjusted according to the length of the straight pipe 100, when a cooling tower heat exchanger with a larger length is assembled, the number of the reinforcing plates 300 is larger, and accordingly, more assembling workers are required, so that the production cost is increased, and a plurality of workers are required to cooperate to sequentially pass through the straight pipe 100 through the through holes 301, so that the assembly efficiency is lower (as shown in fig. 1, 116 through holes 301 are formed in each reinforcing plate 300, and the reinforcing frame includes four reinforcing plates 300, so that the total number of the through holes 301 in the reinforcing frame is 464, and during the assembly, six workers sequentially pass through the straight pipe 100 at the 464 through holes 301, which is not only high in labor cost, but also low in assembly efficiency); in addition, the length of the straight pipe 100 is large, resulting in a long assembly space required for assembly, and thus, the length requirement for the assembly space is high, and the assembly affects the activities of other workers.

Example 1

As shown in fig. 2 to 22, the method for assembling a cooling tower heat exchanger according to embodiment 1 includes the steps of:

s100, laying a plurality of layers of clamping frames 500 with the interval of the outer diameter of the straight pipe 100 and a plurality of layers of straight pipes 100 which are positioned between adjacent clamping frames 500 and are attached and distributed side by side along the vertical direction;

s200, inserting calibration blocks 700 capable of moving along the distribution direction of each layer of straight pipe 100 into the end part of each layer of straight pipe 100, and connecting adjacent calibration blocks 700 through calibration ropes 601 with the same length;

s300, pulling the calibration blocks 700 in the calibration blocks 700 to tension the calibration ropes 601 among the calibration blocks 700;

s400, extracting the calibration block 700 from the straight pipe 100;

s500, locking and connecting the clamping frame 500 with the straight pipe 100;

s600, fixing the bent pipe 200 at the end part of the straight pipe 100, and combining the straight pipe 100, the outer pipe and each clamping frame 500 to form the heat exchanger.

In step S200, the calibration block 700 is connected to the calibration frame 130, the calibration frame 130 slides on the paving floor along the insertion direction of the calibration block 700, and the calibration block 700 is in sliding fit with the calibration frame 130, and step S000 is further included before step S100, in which the positioning member 140 is pre-laid on the paving floor to fix the horizontal laying position of the clamping frame 500 and the sliding direction of the calibration frame 130. In step S100, the holding frame 500 has eight layers, the bottom layer is a bottom frame 501, and the rest are locking frames 502.

Specifically, the assembly steps of this embodiment and the structure after performing the respective assembly steps are as follows:

firstly, as shown in fig. 2, a positioning assembly 140 is pre-laid on the ground, the positioning assembly 140 includes two positioning slide rails 150 distributed side by side and a connecting frame 160 disposed on the same side of the two positioning slide rails 150, the connecting frame 160 includes a connecting rod 161 whose length direction is parallel to the length direction of the positioning slide rails 150 and is horizontal, and two insertion rods 162 distributed side by side along the length direction and extending along the vertical direction are fixed above the connecting rod 161; the positioning slide rail 150 and the connecting rod 161 are fixed on the ground. The cross sections of the two positioning slide rails 150 are T-shaped, the two positioning slide rails are provided with slide blocks 180 in a sliding mode, vertically arranged calibration frames 160 are fixed above the slide blocks 180, the calibration frames 160 are rectangular plate-shaped, and the plate surfaces of the calibration frames are perpendicular to the length direction of the positioning slide rails 150.

As shown in fig. 2 and 18-21, the calibration frame 160 is provided with eight bar-shaped openings 161 extending along the horizontal direction, the calibration block 700 slides inside the bar-shaped openings 161, the cross section of the calibration block 700 is circular, and the number of the calibration blocks 700 sliding on the eight bar-shaped openings 161 is 14, 15, 14, 15 from bottom to top. The side of the positioning rail 150 away from the connecting frame 160 is stacked with 116 straight tubes 100, which are the same as the number of calibration blocks 700 on each calibration frame 130.

Six collars 220, two locking frames 210 and nine clamping frames 500 are further arranged on one side of the positioning slide rail 150 far away from the connecting frame 160. The locking frame 210 comprises a horizontal bar 190 and three positioning rods 170 which are fixed on the same side of the horizontal bar 190, distributed side by side and extend along the vertical direction, and two insertion through holes are formed in the horizontal bar 190 and used for being in insertion fit with the insertion rods 162; the two sides of each clamping frame 500 are provided with three inserting through holes 503, the inserting through holes 503 are used for inserting and matching with the positioning rod 170, the 9 clamping frames 500 are all in a closed frame shape and are vertically arranged, so that the horizontal arrangement space is saved, and the 9 clamping frames 500 comprise 1 bottom frame 501 and eight locking frames 502; the inner diameter of collar 220 is the same as the outer diameter of bayonet 170.

The specific structure of the calibration block 700 is as shown in fig. 21, and includes an insertion portion 701, a disc portion 702, a sliding portion 703, a disc portion 702, a circular shaft portion 704, and a limiting portion 705 connected in sequence along the axial direction thereof, wherein the outer diameter of the disc portion 702 is the same as the outer diameter of the heat exchanger straight pipe 100, the insertion portion 701 is in a truncated cone shape, the outer diameter thereof is smaller than the inner diameter of the heat exchanger straight pipe 100, so that the outer diameter of the sliding portion 702 is the same as the width of the strip-shaped opening 131, and is smaller than the outer diameters of the two disc portions 702, so that the calibration block 700 can slide along the strip-shaped opening 161. The tips of the insertion parts 701 of the calibration blocks 700 on the two calibration stands 130 are arranged opposite to each other.

The two collars 120 are fitted around the outer circumferential edge of the circular shaft 704, the sum of the widths of the two collars 120 is equal to the length of the circumferential portion 704, and the collars 120 are prevented from being detached from the circular shaft 704 by the stopper 701 having an outer diameter larger than that of the circumferential portion 704 and the disk 702. In two adjacent calibration blocks 700, one of the loops 120 of one of the calibration blocks 700 is connected to one of the loops 120 of the other calibration block 700 by a calibration rope 601, and the lengths of the calibration ropes 601 are the same.

One end (hereinafter referred to as a tail end) of the eight strip-shaped openings 131 in the same direction is provided with a tail end protruding shaft 133 fixedly connected with the calibration frame 130, a tail end limiting cover 134 is fixed on the tail end protruding shaft 133, a lantern ring 120 is sleeved outside the tail end protruding shaft 133, the lantern ring 120 is connected with the lantern ring 120 on the calibration block 700 adjacent to the tail end on the strip-shaped opening 131 in the same height through a limiting rope 602, and the tail end limiting cover 134 is used for preventing the lantern ring 120 from being separated from the tail end protruding shaft 133; the other end (hereinafter referred to as the head end) of the bar-shaped opening 131 in the same direction is provided with a head end protruding shaft 132 fixedly connected with the calibration frame 130, and the lantern ring 120 on the calibration block 700 adjacent to the head end on the bar-shaped opening 131 is connected with another lantern ring 120 (for sleeving outside the head end protruding shaft 132) through a locking rope 603.

After the above preparation work is completed, the following second step is performed.

Secondly, as shown in fig. 3, one of the locking frames 210 placed in the first step is installed on the connecting frame 160, during installation, the positioning rod 170 is moved upwards, the two inserting through holes are aligned with the two inserting rods 162, and the cross bar 160 is moved downwards to abut against the connecting rod 161, so that the inserting and matching of the inserting rods 162 and the cross bar 190 is completed; after the insertion, the top surface of the horizontal bar 190 and the top surface of the positioning slide rail 150 are located at the same horizontal plane. The two alignment brackets 130 maintain a certain space with the bottom frame 501, so that the straight pipe 100 can be conveniently laid on the bottom frame 501 in the next step.

Thirdly, as shown in fig. 4, the underframe 501 placed in the first step is laid on the cross bar 190 and the positioning slide rail 150, the underframe 501 is a rectangular frame, the specific structure is that two support bars perpendicular to the length direction of the positioning slide rail 150 are fixed on the inner side of the underframe 501, three positioning through holes 503 are respectively arranged on two sides of the underframe 501, during installation, the three positioning through holes 503 on one side of the underframe 501 are simultaneously sleeved outside the three positioning rods 170 from top to bottom, the underframe 501 is in contact with the cross bar 190 and the positioning slide rail 150, and the underframe 501 is supported by the cross bar 190 and the positioning slide rail 150.

Fourthly, as shown in fig. 5, 14 straight pipes are taken out from the stacked straight pipes 100 and laid on the bottom frame 501, and during laying, the straight pipes 100 are rolled on the bottom frame 501, and finally the structure shown in fig. 5 is formed, wherein 14 straight pipes 100 are sequentially attached and distributed along the length direction of the strip-shaped opening 131, and one of the straight pipes 100 abuts against the positioning rod 170.

Fifthly, as shown in fig. 6, one of the locking frames 502 placed in the first step is laid on the straight tube 100 in the fourth step, the structure of the locking frame 502 is similar to that of the bottom frame 501, and the locking frame includes four locking strips 800 distributed side by side, the locking strips 800 are parallel to the supporting bars, two ends of the four locking strips 800 are fixedly connected by welding through the connecting strips 110 to form a closed frame shape, three positioning through holes 503 are formed in the connecting strips 110, the three positioning through holes 503 in one of the connecting strips 100 are used for being in plugging fit with the three positioning rods 170, the locking frame 502 is laid on the straight tube 100 in the fourth step from top to bottom, and the locking frame 502 is supported by the straight tube 100. The bottom surface of the locking bar 800 (when the locking frame 502 is laid horizontally) is provided with 14 arc-shaped locking recesses 801, the radius of each locking recess 801 is half of the outer diameter of each straight pipe 100, and the locking recesses 801 correspond to the 14 straight pipes 100 on the lower layer of the locking frame 501 one by one and are used for radially locking the corresponding straight pipes 100.

Sixthly, as shown in fig. 7, 15 straight pipes are taken out from the stacked straight pipes 100, and the 15 straight pipes are rolled and laid on the locking frame 502 in the fifth step in the same manner as in the fourth step.

Seventhly, as shown in fig. 8, in the same way as the fifth step, one of the locking racks 502 placed in the first step is laid on 15 straight pipes in the sixth step, and the only difference with the locking rack 502 in the fifth step is that the number of the locking recesses 801 on the bottom surface of the locking strip 800 in this step is 15, and the locking recesses are in one-to-one correspondence with the 15 straight pipes 100 on the lower layer of the locking rack 502 and used for radially locking the corresponding straight pipes 100.

Eighthly, as shown in fig. 9, laying the straight pipes 100 and the locking frames 502 on the locking frame 502 in the seventh step in sequence according to the interval sequence, and finally laying 8 layers of the locking frames 502 and eight layers of the straight pipes 100, wherein the eight layers of the straight pipes 100 correspond to the eight strip-shaped openings 131, and the number of the straight pipes 100 in the eight layers of the straight pipes 100 is 14, 15, 14, 15 from bottom to top respectively and corresponds to the calibration blocks 700 on the calibration frame 130 one by one; the calibration block 700 on the calibration frame 130 is slid toward the end of the strip-shaped opening 131, so that the disk portions 702 of each layer of calibration block 700 abut against each other, and the axis of the calibration block 700 coincides with the axis of the straight pipe 100.

Ninth, as shown in fig. 10, the two alignment brackets 130 are moved along the positioning rails 150 toward the straight pipe 100 and the clamping bracket 500 until the insertion portions 701 of the 116 alignment blocks 700 on the alignment brackets 130 are inserted into the end of the straight pipe 100 and are in clearance fit with the inner wall of the straight pipe 100.

Tenth, as shown in fig. 11, the calibration blocks 700 at the positions of the strip-shaped openings 131 close to the head ends on the calibration frame 130 are pulled to move, so as to drive the straight pipes 100 to move between the two adjacent clamping frames 500, and finally the lantern rings 120 at the head ends are sleeved outside the head-end protruding shafts 133, so that the calibration ropes 601, the limiting ropes 602 and the locking ropes 603 are all in a tensioned state, in this state, the horizontal intervals of the calibration blocks 700 are the same, so that the straight pipes in each layer of straight pipes 100 are distributed side by side at equal intervals along the horizontal direction, and any three non-collinear and adjacent straight pipes 100 in the two adjacent layers of straight pipes form an isosceles triangle with the connection line of the circle centers at the same ends, and at this time, in seven locking frames 502, the locking recesses 801 on the locking strips 800 are arranged opposite to the straight pipes 100 corresponding to the lower layers of the straight pipes 100 one by one, and the clamping frames 500 on each layer of branch pipes 100 are under the guiding effects of the positioning through holes 503 and the positioning rods 170, and the clamping frames 500 are influenced by gravity to move downwards along the axial direction of the positioning rods 170 until the clamping frames 500 lean against the straight pipes 100 at the lower layers, and at this time, the inner walls of the locking strips 502 on the locking strips 800 are abutted against the inner walls 100 of the locking strips 100; and for each straight pipe 100, the calibration block 800 is supported by the bottom wall of the strip-shaped opening 131 on the calibration frame 130 due to the end part of the calibration block 800 inserted, namely the height position of the calibration block 800 is not changed, so that the calibration block 800 supports the straight pipe 100 and the height position of the straight pipe 100 is not changed.

As shown in fig. 12, the alignment block 700 is separated from the straight pipe 100 by moving the alignment bracket 130 away from the clamping bracket 500, and since the insertion portion 701 of the alignment block 700 is in clearance fit with the straight pipe 100 and the straight pipe 100 abuts against the clamping bracket 500, there is a friction force between the two, the clamping bracket 130 moves along the axial direction of the straight pipe 100 when the positioning slide 150 moves.

In the twelfth step, as shown in fig. 13, the remaining locking frames 210 placed in the first step are mounted and connected to the respective clamping frames 500 in the eleventh step, and during the operation, the three positioning rods 170 of the locking frames 210 face downward, the positioning rods 170 sequentially pass through the positioning through holes 503 on the other sides of the eight clamping frames 500 from top to bottom, and then the end portions of the positioning rods 170 of the two locking frames 210 are sleeved with the locking sleeves 220 placed in the first step.

A thirteenth step, as shown in fig. 14 and 15, pressing down the locking frame 502 at the top, so that the inner wall of the locking recess 801 on each locking strip 800 abuts against the upper part of the corresponding straight pipe 100, thereby preventing the radial locking of the straight pipe 100; and then the locking sleeve 220 is abutted against the clamping frame 500 and is fixedly connected with the clamping frame 500 and the positioning rod 170 in a welding manner, so that the clamping frame 500 is locked and connected with the straight pipe 100. At this time, any three non-collinear adjacent straight pipes 100 of the two adjacent straight pipe layers form an isosceles right triangle by connecting the circle centers of the same ends.

Fourteenth, as shown in fig. 16 and 17, the bent pipe 200 is welded and fixed to the end of the straight pipe 100 (the bent pipe 200 may be placed in the vicinity of the positioning rail 150 in the first step in advance, so that a worker can perform a welding operation nearby), and finally the straight pipe 100, the outer pipe 200 and the eight clamping frames 500 are combined to form a heat exchanger of the cooling tower.

Compared with the prior art, the assembling method of the cooling tower heat exchanger does not need to arrange a plurality of workers to transport the straight pipes 200, and the straight pipes 200 sequentially pass through the through holes 301 on the reinforcing plate 300 and then are welded at the end parts, when the assembling method of the embodiment is used, only one to two workers are needed, according to the steps, after the laying of the straight pipes 100 and the clamping frame 500 is completed, the calibration frame 130 is moved, the inserting parts 801 of the calibration blocks 700 are inserted into the straight pipes 100, the calibration blocks 700 are pulled until the lantern rings 120 of the locking ropes 603 are sleeved outside the head end convex shafts 132, so that the positions of the calibration blocks 700 are fixed to fix the positions of the straight pipes 100, then the calibration frame 130 is moved, the clamping frame 500 and the straight pipes 100 are connected in a locking mode through the locking frame 210 and the lantern rings 230, and the bent pipes 200 are welded at the end parts of the straight pipes 100, and the heat exchanger can be manufactured.

In conclusion, in the assembling process, alignment and transportation work by multiple workers is not needed, the straight pipes 100 distributed in the eighth rectangular array are conveniently aligned by the calibration blocks 800 on the calibration frame 130, the horizontal distribution positions of the straight pipes 100 are changed by matching with the traction ropes 600, and the structure shown in fig. 15 is finally obtained, so that the production cost is reduced by reducing the number of assembling workers, the operation is convenient, and the production efficiency is improved; in addition, in the assembling process, the stacking area of the straight pipes 100 and the laying area of the straight pipes 100 (namely, the distribution area of the positioning guide rails 150) are distributed side by side, so that the occupied space length required in the assembling process is reduced, the requirement on the space of a production workshop is lowered, and the movement of other workers is facilitated.

Example 2

As shown in fig. 23 to 24, the method for assembling a cooling tower heat exchanger according to embodiment 2 is different from embodiment 1 in that, in step S100, a reinforcing bar 900 extending in the distribution direction of the locking bar 800 is fixedly connected to the locking bar 800, and the bottom surface of the reinforcing bar 900 and the bottom surface of the locking recess 801 are located on the same curved surface. After the reinforcing strip 900 is adopted, the contact area of the straight pipe 100 in the step S500 is increased, so that the structural strength of the cooling tower heat exchanger is further enhanced, and the deformation of the straight pipe 100 is reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method for assembling a cooling tower heat exchanger is characterized in that: the method comprises the following steps:

s100, laying a plurality of layers of clamping frames (500) with the interval of the outer diameter of the straight pipe (100) and a plurality of layers of straight pipes (100) which are positioned between adjacent clamping frames (500) and are attached and distributed side by side along the vertical direction;

s200, inserting calibration blocks (700) capable of moving along the distribution direction of each layer of straight pipe (100) into the end part of each layer of straight pipe (100), and connecting adjacent calibration blocks (700) through calibration ropes (601) with the same length;

s300, pulling the calibration blocks (700) in each layer of calibration block (700) to tension the calibration ropes (601) between the calibration blocks (700);

s400, extracting the calibration block (700) from the straight pipe (100);

s500, locking and connecting the clamping frame (500) and the straight pipe (100);

s600, fixing a bent pipe (200) at the end part of the straight pipe (100) to enable the straight pipe (100), the outer pipe and each clamping frame (500) to be combined to form the heat exchanger.

2. The method of assembling a cooling tower heat exchanger of claim 1, wherein: in the step S100, the clamping frames (500) of all layers and the straight pipes (100) of all layers are sequentially laid at intervals from bottom to top.

3. The method of assembling a cooling tower heat exchanger of claim 1, wherein: in the step S100, each layer of straight pipes (100) is rolled and laid on a clamping frame (500) below the straight pipes.

4. The method of assembling a cooling tower heat exchanger of claim 1, wherein: among the multilayer clamping frame (500) laid in step S100, the clamping frame (500) located at the bottom layer is a bottom frame (501), the rest clamping frames (500) are locking frames (502), each locking frame (502) comprises a plurality of locking strips (800) which are distributed side by side along the direction parallel to the insertion direction of the calibration block (700), the bottom surface of each locking strip (800) is provided with a plurality of locking recesses (801), each locking recess (801) corresponds to one straight pipe (100) laid below the corresponding locking frame (502) in a one-to-one manner, and each locking recess (801) is used for radially locking the corresponding straight pipe (100).

5. The method of assembling a cooling tower heat exchanger of claim 4, wherein: the locking strip (800) is fixedly connected with a reinforcing strip (900) extending along the distribution direction of the locking strip, and the bottom surface of the reinforcing strip (900) and the bottom surface of the locking recess (801) are located on the same curved surface.

6. The method of assembling a cooling tower heat exchanger of claim 1, wherein: in the step S200, the calibration block (700) is connected to a calibration frame (130), the calibration frame (130) slides on the paving ground along the insertion direction of the calibration block (700), and the calibration block (700) is in sliding fit with the calibration frame (130).

7. The method of assembling a cooling tower heat exchanger of claim 6, wherein: the calibration frame (130) is provided with a plurality of layers of strip-shaped openings (131) which are distributed side by side along the vertical direction, the strip-shaped openings (131) correspond to the plurality of layers of straight pipes (100) one by one, the heights of the straight pipes (100) corresponding to the step S100 and the step S200 are the same, and the calibration block (700) is in sliding fit with the calibration frame (130) through the strip-shaped openings (131).

8. The method of assembling a cooling tower heat exchanger of claim 7, wherein: in each layer of calibration block (700), the calibration block (700) at the tail end is connected with the calibration frame (130) through a limiting rope (602), the calibration block (700) at the head end is detachably connected with the calibration frame (130) through a locking rope (603), the limiting rope (602) and the locking rope (603) between the step 300 and the step S400 are in a tensioning state, and the axial lead of the calibration block (700) in each layer of calibration block (700) is superposed with the axial lead of the straight pipe (100) in each layer of straight pipe (100) in a one-to-one correspondence manner.

9. The method of assembling a cooling tower heat exchanger of claim 6, wherein: in the step 200, the calibration block (700) comprises an insertion part (701) arranged at the side adjacent to the laying position of the calibration frame (130) and the clamping frame (500), and the insertion part (701) is used for being in clearance fit with the straight pipe (100) corresponding to the calibration block (700); the calibration block (700) further comprises disc parts (702) with the same outer diameters of the straight pipes (100), the disc parts (702) in the calibration blocks (700) of all layers are sequentially attached before the step S200, the axial lines of the calibration blocks (700) in all layers of calibration blocks (700) are coincided with the axial lines of the straight pipes (100) in a one-to-one correspondence mode, and the calibration blocks (700) located at the tail ends are arranged at one ends of the strip-shaped openings (131).

10. The method of assembling a cooling tower heat exchanger of claim 6, wherein: the step S100 is preceded by a step S000 of pre-laying a positioning assembly (140) on the laying ground to fix the horizontal laying position of the clamping frame (500) and the sliding direction of the calibration frame (130); the positioning assembly (140) comprises a positioning slide rail (150) fixed on the ground and in sliding fit with the clamping frame (500) and a connecting frame (160) fixed on the ground, the connecting frame (160) is detachably connected with a positioning rod (170) extending along the vertical direction, and a positioning through hole (503) in plug-in fit with the positioning rod (170) is formed in the clamping frame (500).