Radiant coil welding deformation control device

Abstract

This utility model relates to the field of high-temperature industrial furnace equipment manufacturing technology, specifically a radiant coil welding deformation control device. It includes a support frame, with a lower wooden block fixedly connected to one end of the support frame. A radiant coil body is inserted into one end of the lower wooden block, and an upper pressure block is bolted to one end of the lower wooden block. An upper control transformer assembly is fixedly connected to one end of the radiant coil body, and a lower control transformer assembly is fixedly connected to one end of the upper control transformer assembly. This utility model's radiant coil welding deformation control device mainly achieves this by fixing the upper and lower control transformer assemblies to both sides of the welding position of the radiant coil body, which is clamped by the upper and lower pressure blocks. The upper and lower pressure rings further prevent welding deformation of the radiant coil body through tight compression. Furthermore, pre-locking pins, locking pin blocks, semi-square bolts, and adapter nuts enable rapid and secure installation and disassembly of the upper and lower control transformer assemblies, accelerating the efficiency of disassembly and assembly of the deformation control device before welding operations.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature industrial furnace equipment manufacturing technology, specifically a radiant coil welding deformation control device. Background Technology

[0002] Radiant coils are spiral or U-shaped heat exchange tubes made of high-temperature resistant alloys. They achieve efficient radiative heat transfer in low-oxygen environments through gas or electric heating and are widely used in high-temperature processes in chemical, electronic, and specialty gas industries. They must possess properties such as resistance to carburization and thermal deformation.

[0003] Chinese Patent CN216106788U discloses an electrically heated ethylene cracking furnace device, belonging to the technical field of ethylene production equipment in the petrochemical industry. The electrically heated ethylene cracking furnace device includes a cracking furnace and a circulating gas path. The cracking furnace includes a furnace body, radiant coils, electric heating elements, and heat exchange tube bundles located within the furnace body. The circulating gas path forms a closed loop with the furnace body. The electric heating elements transfer the heat required for the cracking reaction to the process fluid within the radiant coils and heat the circulating gas within the furnace body. The circulating gas acts as a heat carrier, carrying heat to the heat exchange tube bundles for recovery and reuse. This invention provides heat to the cracking furnace through electric heating, without producing greenhouse gases or harmful pollutants such as nitrogen oxides (NOx). The heat-carrying gas within the furnace is recycled, and the thermal efficiency of the cracking furnace reaches over 98%. Using this invention to achieve electric heating in traditional fuel-fired cracking furnaces requires minimal modification and is economical and practical.

[0004] The radiant coils used in the above-mentioned schemes and existing technologies in the cracking furnace are relatively long, and they usually need to be welded from multiple sets of steel pipes to form a complete radiant coil. During the welding process, the high temperature of the welding will cause the welded pipes to deform in the welding direction, making it difficult to keep the pipes parallel due to welding deformation. This will cause friction and collision between the furnace tubes when the radiant coils are installed on site, which will cause certain damage to the quality of the product and reduce its service life. There is a lack of corresponding devices to control the welding deformation of the radiant coils, which needs to be improved and optimized. Utility Model Content

[0005] The purpose of this invention is to provide a device for controlling the welding deformation of radiant coils, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a radiant coil welding deformation control device includes a support frame, one end of which is fixedly connected to a lower pad wood, one end of which is inserted into a radiant coil body, one end of which is bolted to an upper pressure wood, one end of which is fixedly connected to an upper control transformer assembly, and one end of which is fixedly connected to a lower control transformer assembly.

[0007] Preferably, the upper control transformer assembly includes an upper clearance arch, with upper pressure rings symmetrically fixedly connected to both ends of the upper clearance arch, and spring cylinders symmetrically fixedly connected to both ends of the upper pressure rings. A semi-square bolt is inserted into the spring cylinder, and a first spring is fixedly connected to one end of the semi-square bolt. One end of the first spring is fixedly connected to the inner wall of the spring cylinder.

[0008] Preferably, a second spring is symmetrically fixedly connected to both ends of the upper pressure ring, and a pre-locking pin is symmetrically fixedly connected to both ends of the upper pressure ring.

[0009] Preferably, one end of the pre-locking pin is provided with a locking tooth, and the other end of the pre-locking pin is provided with a scale line.

[0010] Preferably, the lower control transformer assembly includes a lower clearance arch, with lower pressure rings fixedly connected to both ends of the lower clearance arch. The lower pressure rings are symmetrically rotated and snapped with adapter nuts at both ends. The lower pressure rings are symmetrically provided with pre-insertion holes at both ends, with pre-locking pins inserted into the pre-insertion holes. Fixed blocks are symmetrically fixedly connected to both ends of the lower pressure rings.

[0011] Preferably, one end of the fixing block is provided with a pin groove, a locking pin is inserted into the pin groove, one end of the locking pin is inserted into the locking tooth, and the other end of the locking pin is fixedly connected to a third spring, one end of the third spring is fixedly connected to the pin groove.

[0012] Preferably, one end of the locking pin has an inner groove, one end of the pin groove has a slot, a locking block is inserted into the inner groove, one end of the locking block is fixedly connected to a fourth spring, and one end of the fourth spring is fixedly connected to the inner wall of the inner groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The radiant coil welding deformation control device proposed in this utility model mainly involves fixing an upper control transformer assembly and a lower control transformer assembly to both sides of the welding position of the radiant coil body, which is clamped by upper and lower pressure rings. The upper and lower pressure rings further prevent the radiant coil welding deformation by tightening and squeezing the radiant coil body. Furthermore, the upper and lower control transformer assemblies can be quickly and securely installed, fixed, and disassembled by pre-locking pins, locking pin blocks, half-square bolts, and adapter nuts, which speeds up the efficiency of disassembling and assembling the deformation control device before welding operations. Attached Figure Description

[0015] Figure 1 A schematic diagram of a radiant coil welding deformation control device;

[0016] Figure 2 for Figure 2 Enlarged diagram of part A in the middle;

[0017] Figure 3 A partial structural schematic diagram of a radiant coil welding deformation control device;

[0018] Figure 4 A partial structural cross-sectional view of a radiant coil welding deformation control device;

[0019] Figure 5 for Figure 4 Enlarged diagram of part B in the middle;

[0020] Figure 6 This is a partial structural cross-sectional view of a radiant coil welding deformation control device.

[0021] In the diagram: 1. Support frame; 2. Lower pad wood; 3. Radial coil body; 4. Upper pressure wood; 501. Upper clearance arch; 502. Upper pressure ring; 503. Spring cylinder; 504. Half square bolt; 505. First spring; 506. Second spring; 507. Pre-locking pin; 508. Locking tooth; 509. Scale line; 601. Lower clearance arch; 602. Lower pressure ring; 603. Adapter nut; 604. Pre-insertion hole; 605. Fixing block; 606. Pin groove; 607. Locking pin block; 608. Third spring; 609. Inner groove; 610. Card slot; 611. Card block; 612. Fourth spring. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1 to 6 This utility model provides the following two technical solutions:

[0024] Example 1: A radiant coil welding deformation control device includes a support frame 1, a lower pad 2 fixedly connected to one end of the support frame 1, a radiant coil body 3 inserted into one end of the lower pad 2, an upper pressure wood 4 bolted to one end of the lower pad 2, an upper control transformer component fixedly connected to one end of the radiant coil body 3, and a lower control transformer component fixedly connected to one end of the upper control transformer component.

[0025] In use, the radiant coil body 3 is placed into the upper circular groove of the lower pad 2 on the support frame 1 and pressed and fixed by bolts with the upper pressure wood 4. The upper control transformer assembly and the lower control transformer assembly are fixedly connected to both sides of the welding position of the radiant coil body 3 respectively.

[0026] Example 2: Based on Example 1, the upper control transformer assembly includes an upper clearance arch 501, with upper pressure rings 502 symmetrically fixedly connected to both ends of the upper clearance arch 501. Spring cylinders 503 are symmetrically fixedly connected to both ends of the upper pressure rings 502. A semi-square bolt 504 is inserted into the spring cylinder 503, and a first spring 505 is fixedly connected to one end of the semi-square bolt 504. One end of the first spring 505 is fixedly connected to the inner wall of the spring cylinder 503. A second spring 506 is symmetrically fixedly connected to both ends of the upper pressure ring 502, and a pre-locking pin 507 is symmetrically fixedly connected to both ends of the upper pressure ring 502. One end of the pre-locking pin 507 has a locking tooth 508, and the other end has a scale line 509. The lower control transformer assembly includes a lower clearance arch 601, with lower pressure rings 602 fixedly connected to both ends of the lower clearance arch 601. The two ends are symmetrically rotated and snapped with adapter nuts 603. The two ends of the pressure ring 602 are symmetrically provided with pre-insertion holes 604, and a pre-locking pin 507 is inserted into the pre-insertion hole 604. The two ends of the pressure ring 602 are symmetrically fixedly connected with fixing blocks 605. One end of the fixing block 605 is provided with a pin groove 606, and a locking pin 607 is inserted into the pin groove 606. One end of the locking pin 607 is inserted into the locking tooth 508, and the other end of the locking pin 607 is fixedly connected with a third spring 608. One end of the third spring 608 is fixedly connected to the pin groove 606. One end of the locking pin 607 is provided with an inner groove 609, and one end of the pin groove 606 is provided with a slot 610. A slot 611 is inserted into the inner groove 609, and one end of the slot 611 is fixedly connected to a fourth spring 612. One end of the fourth spring 612 is fixedly connected to the inner wall of the inner groove 609.

[0027] In use, first place the upper clearance arch 501 and upper pressure ring 502 on the upper control transformer assembly above the radiant coil body 3, with the middle position of the upper clearance arch 501 aligned with the weld seam. Then, install the lower control transformer assembly below the radiant coil body 3 corresponding to the upper clearance arch 501 and upper pressure ring 502. This is done by sequentially inserting the pre-locking pins 507 into the pre-insertion holes 604, and then pressing the locking pin block 607 in the pin groove 606 of the fixing block 605 against the third spring 608. Under pressure, the upper pressure ring 502 and the lower pressure ring 602 are fixed by the locking tooth 508, thus achieving the pre-positioning installation of the upper pressure ring 502 and the lower pressure ring 602. The second spring 506, with its outer ring of the locking pin block 607 on the upper pressure ring 502, acts as a buffer by pressing the lower pressure ring 602. After pre-installation, turning the adapter nut 603 causes the semi-square bolt 504 to move downwards and move towards the clamping spring cylinder 503, further pressing the upper pressure ring 502 to securely connect the upper pressure ring 502 and the lower pressure ring 602, achieving butt welding. The horizontal clamping of the coils at both ends of the seam prevents welding deformation. The adapter nut 603 is rotatably engaged with the lower pressure ring 602, eliminating the need to remove the nut and perform the connection. When sequentially tightening the adapter nuts 603, the tightening degree of multiple sets of adapter nuts 603 can be assisted by the scale line 509 on the pre-locking pin 507, preventing the upper and lower pressure rings 502 from being installed skewed. The first spring 505 inside the spring cylinder 503 is used to fix the semi-square bolt 5. 04. When the pre-locking pin 507 is inserted into the pre-insertion hole 604, the half-square bolt 504 presses against the adapter nut 603 within the upper pressure ring 502. When disassembly is required, simply move the locking pin block 607 in sequence to disengage it from the locking tooth 508, and use the fourth spring 612 to press the locking block 611 into the groove 610 to keep the locking pin block 607 disengaged from the locking tooth 508. Then loosen the adapter nut 603 in sequence and remove the upper control transformer assembly and the lower control transformer assembly respectively.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radiation coil welding deformation control device comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to a lower pad (2) at one end, and a radiant coil body (3) is inserted into the lower pad (2) at one end. An upper pressure wood (4) is bolted to the lower pad (2) at one end. An upper control transformer assembly is fixedly connected to the radiant coil body (3) at one end, and a lower control transformer assembly is fixedly connected to the upper control transformer assembly at one end.

2. A radiation coil welding distortion control apparatus according to claim 1, wherein: The upper control transformer assembly includes an upper clearance arch (501), with upper pressure rings (502) symmetrically fixedly connected to both ends of the upper clearance arch (501). Spring cylinders (503) are symmetrically fixedly connected to both ends of the upper pressure rings (502). A semi-square bolt (504) is inserted into the spring cylinder (503). A first spring (505) is fixedly connected to one end of the semi-square bolt (504), and one end of the first spring (505) is fixedly connected to the inner wall of the spring cylinder (503).

3. A radiation coil welding distortion control apparatus according to claim 2, wherein: The upper pressure ring (502) is symmetrically fixedly connected to two ends with second springs (506), and the upper pressure ring (502) is symmetrically fixedly connected to two ends with pre-locking pins (507).

4. A radiation coil welding distortion control apparatus according to claim 3, wherein: The pre-locking pin (507) has a locking tooth (508) at one end and a scale line (509) at the other end.

5. A radiation coil welding distortion control apparatus as claimed in claim 1, wherein: The lower control transformer assembly includes a lower clearance arch (601), with a lower pressure ring (602) fixedly connected to both ends of the lower clearance arch (601). The lower pressure ring (602) is symmetrically rotated and snapped with a transition nut (603) at both ends. The lower pressure ring (602) is symmetrically provided with pre-insertion holes (604) at both ends. A pre-locking pin (507) is inserted into the pre-insertion hole (604). The lower pressure ring (602) is symmetrically fixedly connected with a fixing block (605) at both ends.

6. A radiation coil welding distortion control apparatus as claimed in claim 5, wherein: One end of the fixing block (605) is provided with a pin groove (606), and a locking pin (607) is inserted into the pin groove (606). One end of the locking pin (607) is inserted into the locking tooth (508), and the other end of the locking pin (607) is fixedly connected to a third spring (608). One end of the third spring (608) is fixedly connected to the pin groove (606).

7. A radiation coil welding distortion control apparatus as claimed in claim 6, wherein: The locking pin (607) has an inner groove (609) at one end, and the pin groove (606) has a slot (610) at one end. A locking block (611) is inserted into the inner groove (609). A fourth spring (612) is fixedly connected to one end of the locking block (611), and one end of the fourth spring (612) is fixedly connected to the inner wall of the inner groove (609).

Images