Horizontal assembly clearance control device for large pressure vessel

Abstract

The utility model relates to a horizontal assembly clearance control device for a large pressure vessel, which comprises a locking screw, a tensioning plate, a clearance cushion block, a bolt, a locking bolt, a limiting bolt, a compression bolt, a guide positioning pin, an elastic locking clamp, a rear cover assembly and a shell, and the tensioning plate is matched with the clearance cushion block to control the assembly clearance; the gap cushion block is completely and tightly attached to the shell, the tensioning plate is arranged in a clamping groove of the gap cushion block, the advancing distance of the tensioning plate can be limited by screwing down the pressing bolt, and the gap between the rear cover assembly and the shell is controlled. The locking screw and the locking bolt are respectively inserted into corresponding positions of the gap cushion block through the bolt, so that the locking screw and the locking bolt are firmly connected; the limiting bolt is inserted into the limiting holes of the tensioning plate, the shell and the rear cover assembly in a penetrating mode, it is guaranteed that the tensioning plate, the shell and the rear cover assembly are coaxial in the assembling process, and displacement of the tensioning plate is prevented. The tool is simple and reliable in structure, high in bearing capacity, low in price, convenient to operate and good in using effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a large -scale pressure vessel horizontal assembly gap control device and method. BACKGROUND

[0002] Many structures in the field of aerospace are nested or assembled by various parts such as large pressure vessels, and the gap between the parts after assembly needs to meet certain precision requirements. However, due to processing errors or other external forces, local deformation may cause parts to contact and collide with each other during assembly, and the assembly precision may be insufficient, or even the assembly may not be completed. During the production and manufacture of large large-opening pressure vessels, the shell and the rear cover assembly need to be assembled, and it is necessary to ensure that the two components are coaxial and the end faces are parallel during assembly. In addition, in order to ensure good sealing effect, a sealing ring is generally provided on the end face of the rear cover assembly, and if the assembly gap is uneven or the precision is insufficient, the sealing ring will be squeezed, causing the sealing ring to be damaged. Therefore, an assembly gap control device must be designed to assist the assembly of the shell and the rear cover assembly of the large pressure vessel, and to ensure that the assembly gap meets the precision requirements.

[0003] At present, there is no public information on a horizontal assembly gap control device specifically designed for the assembly of the shell and the rear cover assembly of a large large-opening pressure vessel. During the production and manufacture of large large-opening pressure vessels, the shell and the rear cover assembly need to be assembled. Due to the heavy weight of the shell and the rear cover assembly, which is usually more than a few hundred kilograms, the traditional method is to use a vertical assembly method, that is, the shell of the pressure vessel is placed vertically in a pit, and the rear cover assembly is lifted to the appropriate position by hoisting, and then the assembly is completed by continuous adjustment and pressure vessel shell docking.

[0004] The vertical assembly method does not use any auxiliary assembly tooling, and during assembly, parts are prone to contact, collision, and insufficient assembly precision, and cannot quickly level the end face and align the axis, or even cannot complete the assembly. In addition, the sealing ring is also prone to being squeezed during assembly. SUMMARY

[0005] Based on the above problems, the utility model provides a large pressure vessel horizontal assembly gap control device to solve the problem that during the assembly of the shell and the rear cover assembly of a large large-opening pressure vessel, due to processing errors or other external forces, local deformation may cause parts to contact and collide with each other during assembly, and the assembly precision may be insufficient, or even the assembly may not be completed. The assembly gap meets the precision requirements and does not damage the sealing structure between the parts.

[0006] In order to solve the above technical problems, the utility model discloses one of purposes is to provide a large pressure vessel horizontal assembly gap control device, include: locking screw a 2, tensioning plate 3, gap pad 4, bolt M6x205, locking bolt b 6, limit bolt 7, compression bolt 8, guide positioning pin 9, elastic locking card 10, rear cover assembly 11, shell 12,

[0007] The cooperation of the tensioning plate 3 and the gap pad 4 controls the assembly gap; the gap pad 4 and the shell 12 are completely tightly attached, the tensioning plate 3 is placed in the clamping groove of the gap pad 4, and the compression bolt 8 is tightened to limit the advancing distance of the tensioning plate 3, thereby controlling the gap between the rear cover assembly and the shell;

[0008] The locking screw a 2 and the locking bolt b 6 are respectively inserted into the corresponding positions of the gap pad 4 through the bolt M6x205, and the two are firmly connected;

[0009] The limit bolt 7 is inserted into the limiting holes of the tensioning plate 3, the shell 12 and the rear cover assembly 11, thereby ensuring that the two are coaxial during the assembly process and preventing the tensioning plate 3 from being displaced;

[0010] The guide positioning pin 9 is inserted into the butt joint assembly of the shell 12 and the rear cover assembly 11.

[0011] Further, the locking screw a 2, the tensioning plate 3, the gap pad 4, the bolt M6x205, the locking bolt b 6, the limit bolt 7, the compression bolt 8, the guide positioning pin 9 and the elastic locking card 10 are all made of 30CrMnSiA material.

[0012] Further, the tensioning plate 3 is in the shape of "L", the tensioning plate 3 is assembled with the rear cover assembly 11, and the side surface and the open end surface of the rear cover assembly 11 are tightly attached to the inner surfaces of the tensioning plate 3, respectively.

[0013] Based on the same utility model concept, the utility model further provides a method for controlling the gap of a large pressure vessel horizontal assembly, and the specific steps are as follows:

[0014] S1: the shell 12 and the rear cover assembly 11 of the large pressure vessel are moved to the assembly table for rough butt joint assembly, the guide positioning pin 9 is inserted into the positioning holes of the shell 12 and the rear cover assembly 11 for positioning after being in place, and there is still a distance between the shell 12 and the rear cover assembly 11 at this time, which is the width difference of the tensioning plate 3 and the gap pad 4;

[0015] S2: the "L"-shaped tensioning plate 3 is assembled with the rear cover assembly 11, and the side surface and the open end surface of the rear cover assembly 11 are tightly attached to the inner surfaces of the tensioning plate 3, respectively.

[0016] S3: Limit bolt 7 is inserted through the limiting hole of the tension plate 3, the shell 12 and the rear cover assembly 11, and the coaxiality of the two is ensured during assembly to prevent displacement of the tension plate 3;

[0017] S4: The compression bolt 8 is inserted through the corresponding hole of the tension plate 3, the shell 12 and the rear cover assembly 11, which is used for subsequent adjustment of the gap between the shell 12 and the rear cover assembly 11, and is not completely tightened before assembly;

[0018] S5: The gap block 4 and the tension plate 3 are assembled, the tension plate 3 is completely placed in the clamping groove of the gap block 4, and the locking screw a 2 and the locking bolt b 6 are inserted into the corresponding positions of the gap block 4 respectively, and the two are firmly connected;

[0019] S6: After the above-mentioned parts are completely assembled, the dial gauge 1 is fixed on the tension plate 3 by the elastic locking clamp 10 and the locking screw a 2, and the measuring rod of the dial gauge 1 can be flexibly moved up and down;

[0020] S7: The above-mentioned operation is repeated three times, and three assembly gap control devices are uniformly distributed on the circumference of the shell 12 and the rear cover assembly 11, when fine assembly is required, three people need to slowly tighten the compression bolt 8 at the same time, so that the left end surface of the tension plate 3 completely matches the left end surface of the gap block 4, and displacement cannot occur, at this time, the gap between the rear cover assembly and the shell is controlled through the cooperation of the tension plate 3 and the gap block 4, and the value of the pointer of the dial gauge 1 needs to be paid attention to during the tightening process, and whether the gap size meets the accuracy requirement is judged through the detection value of the dial gauge 1;

[0021] S8: After assembly, stop the action, and sequentially disassemble the parts of the assembly gap control device in the reverse order of assembly to complete the assembly work.

[0022] Further, the side surface of the S2 "L"-shaped tension plate 3 and the shape of the opening end surface of the rear cover assembly 11 are consistent, and the width is greater than the opening end surface of the rear cover assembly 11, so that the matching surface is completely matched.

[0023] Further, the left end surface of the gap block 4 must be parallel and closely matched with the clamping port surface of the opening end surface of the shell 12 after the S5 assembly is completed, so that the shell 12 and the rear cover assembly 11 are kept parallel and coaxially butted during assembly, and the gap between the two is controlled.

[0024] Further, the S6 detects the gap size, and the dial gauge is zeroed first, so that the pointer points to the "0" scale.

[0025] The above one or more technical solutions of the utility model have at least one or more of the following technical effects:

[0026] The device can effectively solve the problems that the parts may be in contact and collision during the assembly process due to local deformation caused by machining errors or other external forces, and the assembly precision is insufficient, even the assembly cannot be completed, and the assembly gap meets the precision requirement, and the sealing structure between the parts is not damaged.

[0027] The device can quickly level the end face of the part and align the axis, and the use of the device changes the vertical assembly into horizontal assembly, and the risk of the part with excessive weight in the lifting process is avoided.

[0028] The tooling has the advantages of simple structure, reliability, high bearing capacity, low price, convenient operation and good use effect. ACCURACY

[0029] Figure 1 The utility model assembly gap control device front view is provided.

[0030] Figure 2 The utility model assembly gap control device section view is provided. CONCRETE IMPLEMENTING SCHEME

[0031] A large pressure vessel horizontal assembly gap control device is mainly composed of a dial gauge 1, locking screws a 2, a tension plate 3, a gap pad 4, a bolt M6x205, locking bolts b 6, a limiting bolt 7, a pressing bolt 8, a guide positioning pin 9 and an elastic locking clamp 10. Except the dial gauge, the rest parts are made of 30CrMnSiA material.

[0032] When assembling, the shell 12 of the large pressure vessel is placed horizontally on the assembly table, the rear cover assembly 11 is moved to the assembly table by the bracket car, and the shell 12 and the rear cover assembly 11 are roughly butt-jointed and assembled, and the guide positioning pin 9 is inserted into the positioning hole of the shell 12 and the rear cover assembly 11 for positioning, at this time, the gap between the shell 12 and the rear cover assembly 11 is about 10 mm. The "L"-shaped tension plate 3 is placed in the clamping groove of the gap pad 4, the lock screw a 2 and the lock bolt b 6 are respectively inserted into the corresponding positions of the gap pad 4, and the two are firmly connected. After assembly is completed, the rear cover assembly 11 is assembled in cooperation to ensure that the side surface and the opening end surface of the rear cover assembly 11 are tightly attached to the inner surface of the tension plate 3; the side surface of the "L"-shaped tension plate 3 and the opening end surface of the rear cover assembly 11 are consistent in shape, and the width is greater than the opening end surface of the rear cover assembly 11, so that the cooperation surface is completely attached; the left end surface of the gap pad 4 must be parallel to the clamping port surface of the opening end surface of the shell 12, so that the shell 12 and the rear cover assembly 11 are kept parallel during the assembly process; the limiting bolt 7 is inserted through the limiting hole of the tension plate 3, the shell 12 and the rear cover assembly 11, so that the coaxiality of the two is ensured and the displacement of the tension plate 3 is prevented; the pressing bolt 8 is inserted through the corresponding holes of the tension plate 3, the shell 12 and the rear cover assembly 11, and is used for adjusting the gap between the shell 12 and the rear cover assembly 11 subsequently, and is not completely tightened before assembly;

[0033] After all the above-mentioned parts are assembled, the dial gauge 1 is fixed on the tension plate 3 by the elastic locking clamp 10 and the lock screw a 2, and the measuring rod of the dial gauge 1 can be flexibly moved up and down. Before detecting the gap size, the dial gauge is zeroed to make the pointer point to the "0" scale. The above-mentioned operation is repeated three times, and three assembly gap control devices are uniformly distributed on the circumference of the shell 12 and the rear cover assembly 11. When starting assembly, three people need to slowly tighten the pressing bolt 8 at the same time, and the value pointed by the pointer of the dial gauge 1 needs to be paid attention to during the tightening process. The gap size is judged by the detection value of the dial gauge 1 to determine whether the gap size meets the accuracy requirement. After assembly is completed, the action is stopped, and the parts of the assembly gap control device are sequentially disassembled in the reverse order of assembly, and the assembly work is completed.

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0035] The large pressure container horizontal assembly gap control device is mainly composed of a dial gauge 1, locking screws a 2, a tensioning plate 3, a gap pad 4, bolts M6x205, locking bolts b 6, limiting bolts 7, pressing bolts 8, guide positioning pins 9 and elastic locking clamps 10. Except the dial gauge, the rest parts are made of 30CrMnSiA material.

[0036] The assembly gap control device cross-sectional view is shown in the accompanying Figure 1 The assembly gap control device cross-sectional view is shown in the accompanying Figure 2 (a)~(d), when assembling, the shell 12 of the large pressure container is placed on the assembly table, the rear cover assembly 11 is moved to the assembly table by the bracket car, and the shell 12 is coarsely butt-jointed with the rear cover assembly 11, the guide positioning pin 9 is inserted into the positioning hole of the shell 12 and the rear cover assembly 11 for positioning, at this time, there is still a distance between the shell 12 and the rear cover assembly 11, and the distance is the width difference of the tensioning plate 3 and the gap pad 4.

[0037] As shown in the B-B cross-sectional view in Figure 2 (b), the “L”-shaped tensioning plate 3 is assembled with the rear cover assembly 11, so that the side surface and the open end surface of the rear cover assembly 11 are tightly attached to the inner surface of the tensioning plate 3 respectively; the shape of the side surface of the “L”-shaped tensioning plate 3 and the open end surface of the rear cover assembly 11 is consistent, and the width is greater than that of the open end surface of the rear cover assembly 11, so that the matching surfaces are completely attached;

[0038] As shown in the C-C cross-sectional view in Figure 2 (c), the limiting bolt 7 is inserted into the limiting holes of the tensioning plate 3, the shell 12 and the rear cover assembly 11, so that the coaxiality of the two is ensured and the displacement of the tensioning plate 3 is prevented during the assembly process;

[0039] As shown in the D-D cross-sectional view in Figure 2 (d), the pressing bolt 8 is inserted into the corresponding holes of the tensioning plate 3, the shell 12 and the rear cover assembly 11, which is used for adjusting the gap between the shell 12 and the rear cover assembly 11 subsequently, and is not completely tightened before assembly;

[0040] Then the gap pad 4 and the tensioning plate 3 are assembled, the tensioning plate 3 is completely placed into the clamping groove of the gap pad 4, the locking screw a 2 and the locking bolt b 6 are respectively inserted into the corresponding positions of the gap pad 4 by the bolt M6x205, and the two are firmly connected. After the assembly is completed, the left end surface of the gap pad 4 must be parallel and tightly attached to the clamping hole surface of the open end surface of the shell 12, so that the shell 12 and the rear cover assembly 11 are kept parallel and coaxial during the assembly process, and the gap between the two is controlled;

[0041] After all the components are assembled, the dial gauge 1 is fixed on the tension plate 3 by the elastic locking clamp 10 and the locking screw a 2, and the measuring rod of the dial gauge 1 can move up and down flexibly. Before detecting the gap size, the dial gauge is zeroed to make the pointer point to the "0" scale.

[0042] The above operation is repeated three times, and three assembly gap control devices are distributed on the circumference of the shell 12 and the rear cover assembly 11. During fine assembly, three persons need to slowly tighten the compression bolts 8 at the same time, so that the left end surface of the tension plate 3 completely abuts against the left end surface of the gap pad 4 and cannot be displaced any more. At this time, the gap between the rear cover assembly and the shell is controlled by the cooperation of the tension plate 3 and the gap pad 4, and the two will not collide or be extruded. During the tightening process, the value indicated by the pointer of the dial gauge 1 needs to be paid attention to, and whether the gap size meets the accuracy requirement is judged by detecting the value of the dial gauge 1. After assembly, the action is stopped, and the components of the assembly gap control device are sequentially disassembled in the reverse order of assembly, and the assembly work is completed.

[0043] The device mainly controls the assembly gap by the cooperation of the tension plate 3 and the gap pad 4. The gap pad 4 and the shell 12 are completely tightly abutted. Since the tension plate 3 is placed in the clamping groove of the gap pad 4, when the compression bolts 8 are tightened, the advancing distance of the tension plate 3 can be limited, that is, the gap between the rear cover assembly and the shell is controlled. When the compression bolts 8 cannot be tightened any more, that is, the left end surface of the tension plate 3 completely abuts against the left end surface of the gap pad 4, it indicates that the rear cover assembly 11 and the shell 12 have been assembled in place. At the same time, whether the gap size between the two meets the accuracy requirement is further judged by detecting the value of the dial gauge 1.

[0044] The large-scale large-opening pressure container horizontal assembly gap control device has been applied and verified in the assembly of the shell and the rear cover assembly of a plurality of large-scale large-opening pressure containers. The gap after assembly meets the accuracy requirement, and there is no collision or other quality problem in the assembly process, and the sealing structure between the parts is intact.

[0045] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the utility model without departing from the spirit and scope of the embodiments of the utility model. Thus, if these modifications and variations of the embodiments of the utility model belong to the scope of the claims of the utility model and its equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A large-sized pressure vessel horizontal assembly gap control device characterized by comprising: It comprises: Locking screw a (2), tensioning plate (3), gap spacer (4), bolt M6x20 (5), locking bolt b (6), limiting bolt (7), compression bolt (8), guide positioning pin (9), elastic locking clamp (10), rear cover assembly (11), shell (12), The cooperation of the tensioning plate (3) and the gap spacer (4) controls the assembly gap; the gap spacer (4) and the shell (12) are completely tightly fitted, the tensioning plate (3) is placed in the clamping groove of the gap spacer (4), and when the compression bolt (8) is tightened, the advancing distance of the tensioning plate (3) can be limited, that is, the gap between the rear cover assembly and the shell is controlled; The locking screw a (2) and the locking bolt b (6) are respectively inserted into the corresponding positions of the gap spacer (4) through the bolt M6x20 (5), and the two are firmly connected; The limiting bolt (7) is inserted through the limiting holes of the tensioning plate (3), the shell (12) and the rear cover assembly (11), which ensures that the two are coaxial during assembly and prevents the tensioning plate (3) from moving; The guide positioning pin (9) is inserted into the abutting assembly of the shell (12) and the rear cover assembly (11).

2. The large pressure vessel horizontal assembly gap control device according to claim 1, characterized by: The locking screw a (2), the tensioning plate (3), the gap spacer (4), the bolt M6x20 (5), the locking bolt b (6), the limiting bolt (7), the compression bolt (8), the guide positioning pin (9) and the elastic locking clamp (10) are all made of 30CrMnSiA material.

3. The large pressure vessel horizontal assembly gap control device of claim 1, wherein: The tensioning plate (3) is "L" shaped, and the tensioning plate (3) is assembled with the rear cover assembly (11) to ensure that the side surface and the open end surface of the rear cover assembly (11) are tightly fitted with the inner surface of the tensioning plate (3).

4. The large pressure vessel horizontal assembly gap control device of claim 1, wherein: The left end surface of the gap spacer (4) must be parallel and tightly fitted with the bayonet surface of the open end surface of the shell (12), which ensures that the shell (12) and the rear cover assembly (11) are kept parallel and coaxially abutted during assembly, and controls the gap between them.

5. The large pressure vessel horizontal assembly gap control device of claim 1, wherein: The control device also comprises a dial gauge (1), which is fixed on the tensioning plate (3) by the elastic locking clamp (10) and the locking screw a (2), ensuring that the measuring rod of the dial gauge (1) can move up and down flexibly.

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