A heat exchanger assembling butt joint device

Abstract

The utility model discloses a heat exchanger assembly butt joint device, containing row pipe type heat exchanger and assembly butt joint frock. Row pipe type heat exchanger is constituted by heat exchange pipe, tube sheet and baffle. Assembly butt joint frock is equipped with two linear slide rails, and the linear slide rail is slidably installed with locking sliding block, and the top of sliding block is equipped with horizontal slide groove, and the sliding block is slidably installed in the slide groove, and the top of sliding block is connected with clamping plate through vertical rod. The horizontal slide groove is penetrated through rotating screw rod, and the rotating screw rod can drive the sliding block to move, and then drive the clamping plate to hold or loosen the component. When assembling, first, the heat exchange pipe front end is inserted into the tube sheet, and then the baffle is sleeved into the heat exchange pipe rear end, and the frock is moved forward and backward and is held by the clamping plate, and the baffles are sleeved to the specified position in turn and equidistantly. The device changes the traditional assembly mode, avoids the cumbersome operation of inserting the heat exchange pipe into the tube sheet after fixing the tube sheet, and effectively improves the assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger assembly tooling technology, specifically to a heat exchanger assembly docking device. Background Technology

[0002] In the manufacturing of shell-and-tube heat exchangers, traditional assembly processes present numerous challenges. Current technology typically involves fixing the tube sheet and baffles in place. The tube sheet, located at the front of the heat exchanger, seals and secures the heat exchange tubes, while baffles are spaced at the rear to enhance fluid turbulence and improve heat exchange efficiency. However, this assembly method requires inserting each heat exchange tube individually into the pre-fixed holes in the tube sheet and baffles. Due to the large number and length of the heat exchange tubes, they are prone to sagging and deformation under gravity during insertion, leading to misalignment between the tubes and the holes in the tube sheet and baffles. This not only increases insertion resistance and reduces assembly efficiency but can also cause surface scratches on the heat exchange tubes and wear at the hole edges, affecting the heat exchanger's sealing performance and service life. Furthermore, the individual insertion process requires workers to repeatedly adjust the tube positions, resulting in high labor intensity and demanding precision. It is difficult to ensure the consistency of the installation positions of multiple heat exchange tubes, thus affecting the heat exchange uniformity and structural stability of the entire heat exchanger. The aforementioned problems are particularly pronounced when dealing with large shell-and-tube heat exchangers, becoming a bottleneck restricting production efficiency and product quality. Therefore, the industry urgently needs a new type of heat exchanger assembly and docking device that can simplify the assembly process, improve assembly accuracy, and reduce labor intensity. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a heat exchanger assembly and docking device to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following: It includes a shell-and-tube heat exchanger, and an assembly and docking fixture is provided below the shell-and-tube heat exchanger; the shell-and-tube heat exchanger includes multiple heat exchange tubes, a tube sheet inserted into the front end of the heat exchange tubes, and multiple baffles fitted in the middle section of the heat exchange tubes. The assembly and docking fixture includes two linear slide rails arranged front and back, and two locking sliders slidably disposed in the slide rails. The top of the locking sliders is provided with transverse slide grooves arranged left and right. Two sliders are slidably disposed in the inner slide grooves of the transverse slide grooves. The top surface of each slider is fixedly connected with a vertical rod, and the side of the vertical rods that are close to each other is fixedly connected with a clamping plate. A lead screw runs through and rotates inside each of the transverse sliding grooves. A crank rocker arm is fixedly connected to the right end of each lead screw. Two sections of threads are arranged in a left-right mirror symmetrical arrangement on the outer ring surface of the lead screw. Nuts that are adapted to the threads of the outer ring of the lead screw are embedded and fixed inside each of the sliders.

[0004] As a preferred embodiment of this utility model: the bottom surface of the linear slide rail is bolted to the ground, and the side wall of the locking slider has a buckle for locking after sliding to a designated position.

[0005] As a preferred embodiment of this utility model, the left end of the lead screw is rotatably connected to the left side wall of the inner cavity of the transverse slide groove.

[0006] As a preferred embodiment of this utility model: the internal slide of the transverse slide and the vertical cross section of the slider are both inverted T-shapes.

[0007] As a preferred embodiment of this utility model: a layer of rubber pad is fixedly connected between each of the clamping plates that are close to each other, and the side of the rubber pad that is close to each other has a groove for the left and right side walls of the baffle plate to be inserted.

[0008] As a preferred embodiment of this utility model: the front clamping plate is in contact with the left and right side walls of the tube sheet, and the rear clamping plate is in contact with the left and right side walls of the baffle plate.

[0009] As a preferred embodiment of this utility model, both the tube sheet and the baffle plate are provided with through holes for inserting heat exchange tubes.

[0010] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This technical solution achieves efficient and precise assembly by using an assembly docking fixture in conjunction with the shell-and-tube heat exchanger. The assembly docking fixture utilizes a linear slide rail and a locking slider structure, allowing for flexible movement and locking in position, facilitating adjustments to the assembly spacing. A transverse slide groove and a screw drive mechanism drive the sliders to slide in opposite directions, ensuring the clamping plates stably hold the tube sheet and baffles. The grooved design of the rubber pads enhances friction and prevents damage to components. During operation, the front end of the heat exchange tube is first inserted into the tube sheet, then the baffle is fitted onto the rear end of the heat exchange tube. The moving fixture drives the baffles to be sequentially and equidistantly fitted into designated positions, avoiding the tedious process of inserting heat exchange tubes one by one after fixing the tube sheet, significantly improving assembly efficiency. Simultaneously, this device can adapt to the assembly requirements of heat exchange tubes of different lengths, ensuring the installation accuracy of the baffles and the overall structural stability of the heat exchanger through forward and backward movement and clamping fixation. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0012] Figure 1This is a schematic diagram of a shell-and-tube heat exchanger and its assembly fixture. Figure 2 This is a schematic diagram of a shell-and-tube heat exchanger; Figure 3 This is a schematic diagram of the assembly and docking fixture.

[0013] Explanation of reference numerals in the attached figures: 1. Shell and tube heat exchanger; 101. Heat exchange tube; 102. Baffle plate; 103. Tube sheet; 2. Assembly and docking fixture; 201. Linear slide rail; 202. Locking slider; 203. Crank rocker arm; 204. Slider; 205. Vertical rod; 206. Transverse groove; 207. Lead screw; 208. Clamping plate. Detailed Implementation

[0014] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0015] Example 1: The assembly and docking fixture 2 is installed in the working area. The linear slide rail 201 is securely locked to the ground with bottom bolts to ensure the overall stability of the device. The shell-and-tube heat exchanger 1 is hoisted above the assembly and docking fixture 2, and its position is adjusted so that the front end of the heat exchange tube 101 is aligned with the through hole of the tube sheet 103. The crank rocker arm 203 on the front transverse slide groove 206 is rotated to drive the lead screw 207 to rotate. Through the left and right mirror symmetrical thread structure, the two sliders 204 slide towards each other along the transverse slide groove 206, so that the front clamping plate 208 clamps the left and right sides of the tube sheet 103, and the groove of the rubber pad fits against the side wall of the tube sheet 103 to achieve stable fixation. Then, multiple baffle plates 102 are sequentially inserted into the rear end of the heat exchange tube 101 and their positions are adjusted to the initial assembly area. Rotate the crank rocker arm 203 on the rear transverse slide 206. Through the same transmission structure, the rear clamping plate 208 clamps the nearest baffle plate 102, pushing the locking slider 202 to slide backward along the linear slide rail 201 to the first installation position. After locking the locking slider 202, release the rear clamping plate 208. Move the device backward again to make the rear clamping plate 208 clamp the next baffle plate 102. Repeat the operation until all baffle plates 102 are installed at equal intervals to the designated positions of the heat exchange tube 101.

[0016] Example 2: Based on Example 1, the operation process is optimized. Before assembly, multiple baffles 102 are pre-installed on the rear end of the heat exchange tube 101, maintaining a spacing of approximately 100mm. The front and rear clamping plates 208 of the assembly docking fixture 2 are adjusted to the positions of the tube sheet 103 and the first baffle 102, respectively. The clamping plates 208 are clamped synchronously by rotating the crank rocker 203. The front locking slider 202 is unlocked, and the entire device is pushed backward, so that the front end of the heat exchange tube 101 is gradually inserted into the through hole of the tube sheet 103. When the first baffle 102 reaches the first installation position, the front locking slider 202 is locked. Keeping the front fixed, the rear locking slider 202 is unlocked and moved backward, so that the remaining baffles 102 reach the designated positions in sequence. The equidistant installation is completed by the reciprocating clamping-moving-releasing action of the rear clamping plate 208. This method utilizes the overall movement characteristics of the device to reduce the number of times the baffle 102 is individually positioned, thereby improving assembly efficiency.

[0017] Example 3: For the assembly of ultra-long heat exchange tubes 101, an intermediate support structure is added based on Example 2. An auxiliary slide rail is added at the middle position of the two linear slide rails 201 of the assembly docking fixture 2, and an intermediate support device with adjustable clamps is installed, the structure of which is the same as the front and rear clamping mechanisms. During assembly, the intermediate support device is first adjusted to the midpoint of the heat exchange tube 101, and the heat exchange tube 101 is fixed by the clamps to prevent sagging. The front and rear main clamps 208 still clamp the tube sheet 103 and the first baffle 102 in the manner of Example 2, and the intermediate support device slides synchronously during the movement. After the first baffle 102 is installed in place, the intermediate support device is released and moved backward to the next midpoint position to be re-fixed, and the installation of the remaining baffles 102 is continued. This structure effectively solves the problem of long tube deformation through multi-point support, ensures the installation accuracy of the baffles 102, and is particularly suitable for the assembly of heat exchangers with tube lengths exceeding 3 meters.

[0018] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: First, the assembly docking fixture 2 is fixed to the ground by the bottom bolts of the linear slide rail 201 to ensure the overall stability of the device. At this time, the two linear slide rails 201 arranged front and rear provide a guiding foundation for subsequent movement. The locking slider 202 can slide along its slide and be locked at a designated position by the side wall latch. The shell and tube heat exchanger 1 is hoisted to the top of the assembly docking fixture 2. The position is adjusted so that the front end of the heat exchange tube 101 is aligned with the through hole of the tube sheet 103. The tube sheet 103 and the baffle plate 102 are both provided with through holes for the heat exchange tube 101 to be inserted. At this time, the front side is rotated laterally. The crank rocker arm 203 on the slide groove 206 drives the lead screw 207 to rotate. The left end of the lead screw 207 is rotatably connected to the left side wall of the inner cavity of the transverse slide groove 206 to achieve stable support. The outer ring of the lead screw 207 is provided with two sections of left-right mirror symmetrical threads. The slider 204 is embedded with a nut that matches the thread. The vertical section of the slide groove 206 and the slider 204 is inverted T-shaped to prevent derailment. When the lead screw 207 rotates, it drives the two sliders 204 to slide towards each other along the transverse slide groove 206, so that the clamping plates 208 fixed on the front upright 205 clamp the left and right sides of the tube plate 103. The rubber pads set between the clamping plates 208 pass through the groove. To increase friction and prevent damage, the tube sheet 103 sidewalls are fitted together. Then, multiple baffles 102 are sequentially inserted into the rear end of the heat exchange tubes 101. The crank rocker 203 on the rear transverse slide 206 is rotated, and through the same transmission structure, the rear clamping plate 208 clamps the closest baffle 102, pushing the locking slider 202 to slide backward along the linear slide rail 201, moving the entire shell-and-tube heat exchanger 1. This causes the front end of the heat exchange tubes 101 to gradually insert into the through-hole of the tube sheet 103. When the first baffle 102 reaches the first installation position, the rear locking slider 202 is locked, the rear clamping plate 208 is released, and the rear crank rocker 203 is rotated again to move the rear clamping plate... The next baffle plate 102 is clamped by the 208, and the backward movement is repeated. Through the sliding-locking-releasing-re-clamping cycle of the locking slider 202, multiple baffle plates 102 are sequentially and equidistantly inserted into the designated positions of the heat exchange tubes 101. The front clamping plate 208 always fixes the tube sheet 103 to prevent overall displacement. Finally, the assembly and docking of the heat exchange tubes 101 with the tube sheet 103 and the baffle plates 102 are completed. This device achieves equidistant installation of the baffle plates 102 by moving back and forth, avoiding the cumbersome process of inserting the heat exchange tubes 101 one by one after fixing the tube sheet 103 in the traditional way. At the same time, the clamping of the clamping plate 208 and the anti-slip design of the rubber pad ensure the stability of the assembly.

[0019] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heat exchanger assembly and docking device, comprising a shell-and-tube heat exchanger (1), characterized in that: An assembly docking fixture (2) is provided below the shell-and-tube heat exchanger (1). The shell-and-tube heat exchanger (1) includes multiple heat exchange tubes (101), a tube sheet (103) inserted at the front end of the heat exchange tubes (101), and multiple baffles (102) fitted in the middle section of the heat exchange tubes (101). The assembly docking fixture (2) includes two linear slide rails (201) arranged front and back, and two locking sliders (202) slidably disposed in the slide rails (201). The top of the locking sliders (202) is provided with transverse slide grooves (206) arranged left and right. Two sliders (204) are slidably disposed in the slide rails inside the transverse slide grooves (206). The top surface of each slider (204) is fixedly connected with a vertical rod (205). The side of the vertical rods (205) that are close to each other is fixedly connected with a clamping plate (208). A lead screw (207) runs through and rotates inside each of the transverse slide grooves (206). A crank rocker arm (203) is fixedly connected to the right end of each lead screw (207). Two sections of threads are provided on the outer ring surface of the lead screw (207) in a left-right mirror symmetrical arrangement. A nut that matches the outer ring thread of the lead screw (207) is embedded and fixed inside each of the sliders (204).

2. The heat exchanger assembly and docking device according to claim 1, characterized in that: The bottom surface of the linear slide rail (201) is bolted to the ground, and the side wall of the locking slider (202) has a buckle for locking after sliding to a designated position.

3. The heat exchanger assembly and docking device according to claim 1, characterized in that: The left end of the lead screw (207) is rotatably connected to the left side wall of the inner cavity of the transverse slide groove (206).

4. The heat exchanger assembly and docking device according to claim 1, characterized in that: The internal slide of the transverse slide (206) and the vertical cross section of the slider (204) are both inverted T-shaped.

5. A heat exchanger assembly and docking device according to claim 1, characterized in that: Each of the clamps (208) is fixedly connected with a layer of rubber pads, and the side of the rubber pads that are close to each other has grooves for the left and right side walls of the baffle (102) to be inserted.

6. A heat exchanger assembly and docking device according to claim 1, characterized in that: The front clamping plate (208) is clamped and in contact with the left and right side walls of the tube sheet (103), and the rear clamping plate (208) is clamped and in contact with the left and right side walls of the baffle plate (102).

7. A heat exchanger assembly and docking device according to claim 1, characterized in that: Both the tube sheet (103) and the baffle plate (102) have through holes for inserting heat exchange tubes (101).

Images