An oxygen-chlorination reactor distribution plate manufacturing tool

Abstract

An oxygen chlorination reactor distribution disc manufacturing tool, including (1) diffusion cup welding tool and (2) diffusion cup and distribution plate assembly welding tool, characterized by: (1) the diffusion cup welding tool includes sleeve 2, baffle plate 4 and foot rib plate 5. (2) the distribution plate assembly welding tool includes centering guide ring 7 and positioning plate 8, the centering guide ring 7 is conical structure, the taper is 10° and is provided with longitudinal opening slot. The diffusion cup buttwelding tool of the application can ensure the welding straightness of the diffusion cup. The diffusion cup assembly welding tool can ensure the welding perpendicularity of the diffusion cup and the distribution plate, and can also ensure the uniform spacing of the diffusion cup, which includes distribution plate, centering guide ring, positioning plate and diffusion cup. After the diffusion cup and the distribution plate are welded, the welding quality is inspected by using the diffusion cup inspection tool.

Description

TECHNICAL FIELD

[0001] The present application relates to a set of high-precision tooling devices for oxygen-chlorination reactor distribution plate. Various special tooling related to the installation of diffuser cup is designed to ensure the manufacturing precision and quality of oxygen-chlorination reactor distribution plate. TECHNICAL BACKGROUND

[0002] Polyvinyl chloride is an important successor product of petroleum processing, and the ethylene oxychlorination production process is the most advanced production process in the world. Most industrialized countries in the world use this process to produce polyvinyl chloride. The core equipment of the ethylene oxychlorination production device is the oxygen-chlorination reactor. The working principle of the oxygen-chlorination reactor is as follows: ethylene, hydrogen chloride and oxygen are heated under the action of copper chloride catalyst, and the mixed gas passes through the gas distributor at the lower part of the reactor and the fluidized bed containing the catalyst to generate dichloroethane. The circulating hot water flows into the cooling pipe, and the reaction heat in the reactor is removed by heat absorption and vaporization. The secondary cyclone separator at the top collects the catalyst copper chloride entrained in the reaction gas.

[0003] The oxygen-chlorination reactor equipment is composed of three parts: the upper cyclone separator, the middle cooling coil, and the lower distributor. The distributor is the core of the oxygen-chlorination reactor, and its manufacturing is also very difficult. The flatness of the distribution plate, the verticality of the diffuser cup, and the control of the spacing are important factors affecting the manufacturing of the distributor. SUMMARY

[0004] The purpose of the present application is to solve the problem that the precision of the distributor of the oxygen-chlorination reactor cannot be guaranteed during the manufacturing process. The problems include the difficulty in ensuring the straightness of the pipe cap and the straight pipe, and the difficulty in ensuring the verticality of the diffuser cup. Because of these problems, the manufacturing quality of the distributor is not high, which affects the service life of the reactor.

[0005] The present application solves the above technical problems by manufacturing tooling through the following process:

[0006] An oxygen chlorination reactor distribution plate manufacturing tool, comprising (1) diffusion cup welding tool; (2) diffusion cup and distribution plate assembly welding tool; (3) diffusion cup inspection tool; characterized in that: (1) the diffusion cup welding tool comprises a sleeve 2, a baffle plate 4 and a support rib plate 5, the welding end of the straight pipe 1 to be welded is fixed inside the sleeve 2 by screws, the pipe cap 3 to be welded with the straight pipe is fixed inside the baffle plate 4 by screws, the sleeve 2 and the baffle plate 4 are both provided with support rib plate mounting grooves to ensure the dimensional accuracy of the tool and are welded and fixed with the support rib plate 5; the rib plate 5 is U-shaped structure, the baffle plate 4 is hexagonal structure, the left lower and right lower edges have clamping grooves, which are positioned by the clamping grooves and one end of the two rib plates 5 to ensure the machining accuracy of the tool, the baffle plate 4 is conical structure, which is convenient for centering adjustment of the pipe cap; the sleeve 2 is hexagonal structure, the left lower and right lower edges have clamping grooves, which are positioned by the clamping grooves and the other end of the two rib plates 5 to ensure the machining accuracy of the tool, the sleeve 2 is cylindrical structure, which is convenient for installation of the straight pipe 1; after the pipe cap 3 and the straight pipe 1 are installed, the adjusting bolts are tightened to fix the straight pipe 1 and the pipe cap 3, and welding is started; using the diffusion cup butt welding tool ensures the straightness of the straight pipe and the pipe cap, and after the straight pipe and the pipe cap are welded, the center hole on the pipe cap is drilled based on the outer circle of the straight pipe to ensure the concentricity of the hole and the diffusion cup.(2) The distribution plate assembly welding tool comprises a centering guide ring 7 and a positioning plate 8, the centering guide ring 7 is conical structure with a taper of 10° and a longitudinal opening slot, which is convenient for fixing and controlling the welding deformation of the centering guide ring 7, the distribution plate hole 6a of the distribution plate 6 is clearance fitted with the diffusion cup 9, and the diffusion cup 9 is fixed by the distribution plate hole 6a and the positioning plate hole 8a; when welding the diffusion cup 9, the distribution plate tube hole 6a is inserted one by one, and the positioning plate hole 8a is also inserted one by one for preliminary positioning, and finally the centering guide ring 7 is installed for accurate positioning, and each diffusion cup has three centering guide rings 7; 18 centering guide rings of 6 diffusion cups are fixed first, the centering guide rings of the distribution plate 6 are taken off one by one, and are welded one by one to ensure the perpendicularity of the diffusion cup and the distribution plate, and realize the perpendicularity deviation of the diffusion cup ≤0.5°.(Three) the diffusion cup test tooling includes positioning ring plate 10, extension tube 11 and detection head 12; positioning ring plate 10 is square hollow structure, light weight is convenient for moving, four corners accurately process the mounting hole of extension tube, detection head (12) is conical structure, the position of small roundness detects the spacing of diffusion cup cap end center hole, the position of large roundness detects the spacing of diffusion cup straight pipe, the perpendicularity of diffusion cup 9 and distribution plate 6 is judged by observing the coincidence of detection head and hole, when four detection heads and corresponding holes are completely coincident, the perpendicularity reaches the best 90 ° perpendicular, according to 0.5 ° deviation calculation, the gap of detection head 12 and pipe cap opening cannot exceed 2 mm, extension tube 11 is used to connect positioning ring plate 10 and detection head 12, is influenced by the partition, and can be tested by using extension tube 11;Threaded hole 10b on positioning ring plate 10 is used to install extension tube 11, the other end of extension tube 11 is installed conical detection head 12, the position of small roundness of conical detection head 12 detects the spacing of diffusion cup cap end center hole, the position of large roundness detects the spacing of diffusion cup straight pipe, the perpendicularity of diffusion cup and distribution plate is judged by observing the coincidence of detection head and hole, when four detection heads and corresponding holes are completely coincident, the perpendicularity reaches the best 90 ° perpendicular, according to 0.5 ° deviation calculation, the gap of detection head and pipe cap opening cannot exceed 2 mm.

[0007] The beneficial effects of the present application are:

[0008] The diffusion cup butt welding tooling of the present application can ensure the welding straightness of the diffusion cup. The diffusion cup group welding tooling can ensure the welding perpendicularity of the diffusion cup and the distribution plate, and also can ensure the uniform spacing of the diffusion cup, which comprises a distribution plate, a centering guide ring, a positioning plate and a diffusion cup. After the diffusion cup and the distribution plate are welded, the welding quality is tested by using the diffusion cup test tooling, which comprises a positioning ring plate, an extension tube and a detection head, to confirm the manufacturing quality of the diffusion cup, and if the test exceeds the standard, calibration is carried out, which comprises a positioning ring plate, an extension tube and a detection head. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural schematic view of the oxygen-chlorination reactor distribution disc of the present application.

[0010] Figure 2 It is a three-dimensional structure view of the diffusion cup butt welding tooling of the present application.

[0011] Figure 3 It is a three-dimensional structure view of the diffusion cup and distribution plate group welding tooling of the present application.

[0012] Figure 4 It is a three-dimensional structure view of the centering guide ring of the present application.

[0013] Figure 5 It is a three-dimensional structure view of the diffusion cup test tooling of the present application.

[0014] Figure number: 1, straight pipe (straight pipe 1a, 1b), 2, sleeve (sleeve 2a, 2b), 3, pipe cap (pipe cap 3a, 3b, 3c), 4, baffle plate (baffle plate 4a, 4b, 4c), 5, support rib plate, 6, distribution plate (distribution plate hole 6a), 7, centering guide ring (7a, 7b, 7c, 7d, 7e), 8, positioning plate (positioning plate hole 8a), 9, diffusion cup, 10, positioning ring plate (ring hole 10a, 10b), 11, extension pipe, 12, detection head, A, rib plate, B, partition plate, C, beam. DETAILED DESCRIPTION

[0015] The application will be further described in detail below with reference to the accompanying drawings and examples.

[0016] As Figure 1 shown is the structure of the oxygen chlorination reactor distribution plate corresponding to the manufacturing tool of the application, the structure of the distributor includes: rib plate A, partition plate B, beam C, distribution plate 6 and diffusion cup 9, the manufacturing process is: 1) diffusion cup 9 and pipe cap welding, 2) distribution plate 6 and rib plate A, partition plate B welding, 3) diffusion cup 9 and distribution plate 6 welding. The technical requirements include: 1) the position deviation of the diffusion cup center hole is ≤0.2mm; 2) the verticality deviation of the diffusion cup is ≤0.5°.

[0017] As Figure 2 shown.

[0018] The diffusion cup butt welding tool of the application includes straight pipe 1, sleeve 2, pipe cap 3, baffle plate 4 and foot rib plate 5. The straight pipe 1 is fixed inside the sleeve 2, the pipe cap 3 is fixed inside the baffle plate 4, and the relative position of the two is fixed by screw, the straight pipe and the pipe cap are both processed with bevel 1b and bevel 3a, the sleeve 2 and the baffle plate 4 are both processed with support rib plate 5 installation slot to ensure the dimensional accuracy of the tool, and are welded and fixed with the support rib plate 5. The two rib plates 5 are arranged at an angle of 120°, which plays a stabilizing role. The rib plate 5 is a U-shaped structure, the baffle plate 4 is an outer hexagonal structure, and the left lower and right lower edges have clamping grooves, which are positioned at one end of the two rib plates 5 to ensure the machining accuracy of the tool. The baffle plate 4 is an inner conical structure, which is convenient for the centering adjustment of the pipe cap. The sleeve 2 is an outer hexagonal structure, and the left lower and right lower edges have clamping grooves, which are positioned at the other end of the two rib plates 5 to ensure the machining accuracy of the tool. The sleeve 2 is an inner cylindrical structure, which is convenient for the installation of the straight pipe 1. After the pipe cap 3 and the straight pipe 1 are installed, the adjusting bolts are tightened to fix the straight pipe 1 and the pipe cap 3, and then welding is started. The single-sided gap between the outer diameter of the pipe cap 3 and the inner diameter of the baffle plate 4 is 2mm, which can realize quick disassembly and assembly and quick fixation. By using the diffusion cup butt welding tool, the straightness of the straight pipe and the pipe cap is ensured. After the straight pipe and the pipe cap are welded, the center hole on the pipe cap is drilled with the outer circle of the straight pipe as the reference to ensure the concentricity of the hole and the distribution cup.

[0019] As Figures 3-4The shown is the diffusion cup and distribution plate assembly welding tool of the present application, which comprises a distribution plate 6, a centering guide ring 7, a positioning plate 8 and a diffusion cup 9, the centering guide ring 7 is tapered by about 10° and is provided with a longitudinal opening slot, facilitating the fixation of the centering guide ring 7 and the control of welding deformation, the distribution plate 6 is provided with a hole size matched with the gap (≤0.1mm) of the diffusion cup 9, the diffusion cup 9 is fixed by the distribution plate hole 6a and the positioning plate hole 8a. When welding the diffusion cup 9, the distribution plate hole 6a is penetrated one by one, and the positioning plate hole 8a is penetrated at the same time to preliminarily position, and finally the centering guide ring 7 is installed to accurately position, and each diffusion cup is provided with three centering guide rings. 18 centering guide rings of 6 diffusion cups are fixed first, the centering guide rings of the distribution plate 6 are taken off one by one, and are welded one by one, so as to ensure the perpendicularity of the diffusion cup and the distribution plate, and realize that the perpendicularity deviation of the diffusion cup is ≤0.5°. The inner circle 7a of the centering guide ring 7 tightly covers the straight pipe 1 of the diffusion cup 9, the angle of the outer tapered surface 7e is 2° larger than that of the matched hole, the ring groove 7c and the longitudinal groove 7d can realize a certain degree of diameter change, the centering is realized, and the step 7b facilitates disassembly.

[0020] Figure 5 The shown is the inspection tool of the diffusion cup of the present application, which comprises a positioning ring plate 10, an extension pipe 11 and a detection head 12. The positioning ring plate 10 is a square circular hollow structure, which is lightened to facilitate movement, four corners are accurately machined to install the extension pipe, the detection head 12 is a tapered structure, the position with small roundness detects the spacing of the center hole of the pipe cap end of the diffusion cup, the position with large roundness detects the spacing of the straight pipe of the diffusion cup, and the perpendicularity of the diffusion cup 9 and the distribution plate 6 is judged by observing the coincidence of the detection head and the hole. When the four detection heads are completely coincided with the corresponding holes, the perpendicularity reaches the best 90° perpendicularity, according to the 0.5° deviation calculation, the gap between the detection head 12 and the pipe cap opening should not be more than 2mm, the extension pipe 11 is used to connect the positioning plate 10 and the detection head 12, and the inspection can be carried out only by using the extension pipe 11 due to the influence of the partition plate. The middle of the positioning ring plate 10 is machined to have a lightening hole 10a to facilitate movement, and the threaded holes 10b thereon can install the extension pipe 11, the other end of the extension pipe 11 installs the tapered detection head 12, the position with small roundness detects the spacing of the center hole of the pipe cap end of the diffusion cup, the position with large roundness detects the spacing of the straight pipe of the diffusion cup, and the perpendicularity of the diffusion cup and the distribution plate is judged by observing the coincidence of the detection head and the hole. When the four detection heads are completely coincided with the corresponding holes, the perpendicularity reaches the best 90° perpendicularity, according to the 0.5° deviation calculation, the gap between the detection head and the pipe cap opening should not be more than 2mm.

[0021] The part not involved in the present application is the same as the prior art or can be realized by using the prior art.

Claims

1. An oxygen-chlorination reactor distribution plate manufacturing tooling, comprising (1) a diffusion cup welding tooling; (2) a diffusion cup and distribution plate assembly welding tooling; (3) a diffusion cup inspection tooling; characterized in that: The diffusion cup welding tool includes a sleeve (2), a baffle plate (4) and a support rib plate (5), the welding end of a straight pipe (1) to be welded is fixed in the sleeve (2) by screws, a pipe cap (3) to be welded with the straight pipe is fixed in the baffle plate (4) by screws, the sleeve (2) and the baffle plate (4) are both provided with support rib plate mounting grooves to ensure the dimensional accuracy of the tool and are welded with the support rib plate (5); the rib plate (5) is of U-shaped structure, the baffle plate (4) is of outer hexagonal structure, and the lower left and right sides are provided with clamping grooves, the clamping grooves and one end of the two rib plates (5) are positioned to ensure the machining accuracy of the tool, the baffle plate (4) is of inner conical structure to facilitate the centering adjustment of the pipe cap; the sleeve (2) is of outer hexagonal structure, and the lower left and right sides are provided with clamping grooves, the clamping grooves and the other end of the two rib plates (5) are positioned to ensure the machining accuracy of the tool, and the sleeve (2) is of inner cylindrical structure to facilitate the installation of the straight pipe (1); after the pipe cap (3) and the straight pipe (1) are installed, the adjusting bolts are tightened to fix the straight pipe (1) and the pipe cap (3), and welding is started; the distribution plate assembly welding tool includes a centering guide ring (7) and a positioning plate (8), the centering guide ring (7) is of conical structure with a taper of 10° and is provided with a longitudinal opening groove to facilitate the fixation and control of welding deformation of the centering guide ring (7), the distribution plate hole (6a) of the distribution plate (6) is in clearance fit with the diffusion cup (9), and the diffusion cup (9) is fixed by the distribution plate hole (6a) and the positioning plate hole (8a); when the diffusion cup (9) is welded, the distribution plate pipe hole (6a) is penetrated one by one, and the positioning plate hole (8a) is penetrated at the same time to preliminarily position, and finally the centering guide ring (7) is installed to accurately position, and each diffusion cup has three centering guide rings (7); 18 centering guide rings of six diffusion cups are fixed, the centering guide rings of the distribution plate (6) are taken off one by one, and are welded one by one to ensure the perpendicularity of the diffusion cup and the distribution plate, and the perpendicularity deviation of the diffusion cup is less than or equal to 0.5°; the diffusion cup inspection tool includes a positioning ring plate (10), an extended pipe (11) and a detection head (12); the positioning ring plate (10) is of square circular hollow structure, is light in weight and is convenient to move, the mounting holes of the extended pipe are accurately machined at four corners, the detection head (12) is of conical structure, detects the center hole spacing of the pipe cap end of the diffusion cup at the position with small roundness, detects the spacing of the straight pipe of the diffusion cup at the position with large roundness, and the perpendicularity of the diffusion cup (9) and the distribution plate (6) is judged by observing the coincidence of the detection head and the hole, and when the four detection heads are completely coincided with the corresponding holes, the perpendicularity reaches the best 90° perpendicularity, and the diffusion cup is inspected according to 0.5° deviation calculation, the gap between the detection head (12) and the pipe cap opening cannot exceed 2 mm, the extension pipe (11) is used to connect the positioning ring plate (10) and the detection head (12), and the extension pipe (11) can be used for inspection under the influence of the partition plate; the threaded hole (10b) on the positioning ring plate (10) is used to install the extension pipe (11), the other end of the extension pipe (11) is installed with a conical detection head (12), the conical detection head (12) detects the spacing of the center hole of the pipe cap end of the diffusion cup at the position with small roundness, and detects the spacing of the straight pipe of the diffusion cup at the position with large roundness, the perpendicularity of the diffusion cup and the distribution plate is judged by observing the coincidence of the detection head and the hole, when the four detection heads coincide with the corresponding holes completely, the perpendicularity reaches the best 90° perpendicularity, according to 0.5° deviation calculation, the gap between the detection head and the pipe cap opening cannot exceed 2 mm.

2. The manufacturing tooling of claim 1, wherein: The straight pipe and the pipe cap are both processed with a bevel.

3. The manufacturing tooling of claim 1, wherein: The rib plate (5) is composed of two plates, and the two plates are arranged at an angle of 120°.

4. The manufacturing tooling of claim 1, wherein: The single-side gap between the outer diameter of the pipe cap (3) and the inner diameter of the blanking plate (4) is 2 mm, which can realize quick disassembly and quick fixing.

5. The manufacturing tooling of claim 1, wherein: The gap between the opening size of the distribution plate (6) and the diffusion cup (9) is ≤0.1 mm.

6. The manufacturing tooling of claim 1, wherein: The centering guide ring (7) is provided with a conical surface (7a) tightly wrapped around the straight pipe (1) of the diffusion cup (9), the angle of the outer conical surface (7e) is 2° larger than that of the matched hole, the circumferential ring groove (7c) and longitudinal groove (7d) are beneficial to the diameter change, and a step (7b) is arranged at one end for easy disassembly.

7. The manufacturing tooling of claim 1, wherein: The positioning ring plate (10) is processed with a weight-reducing hole (10a) in the middle for easy movement.

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