Non-destructive disassembly device and working method for membrane box welding gasket

Abstract

The present invention provides a non-destructive disassembly device and working method for a membrane box welding gasket, including: an inflation system and a clamping system; the membrane box is fixed by the clamping system, and the membrane box is inflated by the inflation system; the clamping system includes: a lower plate, an upper plate, a fixed limit assembly and a base; the lower plate and the upper plate are arranged at both ends of the membrane box along the axial direction, the lower plate and the upper plate are limited by the fixed limit assembly, and the lower plate and the upper plate are rotatably mounted on the base and drive the membrane box to rotate. The present application fills 0.1MPa gas into the membrane box to stretch the membrane box to a certain extent, increases the corrugation spacing of the membrane box, and then rotates the membrane box to realize the automatic shedding of the welding gasket, reduce the manual operation cost, and ensure product quality.

Description

Technical Field

[0001] The invention relates to the field of membrane box welding, and in particular to a non-destructive disassembly device and a working method for a membrane box welding gasket. Background Art

[0002] The diaphragm accumulator is the preferred solution for POGO vibration suppression of my country's launch vehicles. The diaphragm, as its key component, is welded from dozens of diaphragms, a top cover and a base. The welding of the diaphragm is difficult to observe, requires high assembly precision, and has high weld quality requirements. The diaphragm is a thin-walled structure, so in order to ensure the formation of the weld, a gasket is required between every two diaphragms for support and rapid heat dissipation. The welding gasket tooling currently used consists of two copper half rings assembled into a full circle. After the diaphragm is welded, the welding gasket needs to be removed. Due to the welding shrinkage during the welding process, the gap between the diaphragm corrugations is significantly reduced compared to before welding, and the pressure between the gasket and the contact surface of the diaphragm will increase significantly.

[0003] At present, the disassembly of welding gaskets mainly relies on operators to use sharp objects to pick out the gaskets one by one from the joints of semicircular welding gaskets. This method will cause wear on the joint surface of the welding gasket and deformation of the semicircular gasket, which will reduce the roundness, thereby reducing the welding assembly accuracy and affecting the quality of the weld. Secondly, during the diaphragm box welding process, a pair of welding gaskets needs to be clamped between every two diaphragms. After the welding is completed, the gaskets need to be removed wave by wave, which is extremely labor-intensive. In addition, since the contact between the welding gasket and the diaphragm is very close, the gasket may scratch the surface of the diaphragm during the disassembly process, affecting the product quality.

[0004] Existing patents, such as CN214844692U, provide a sulfation rate membrane box, which can only adjust the height of the membrane box connected to the gasket for packaging, and fail to achieve non-destructive removal of the gasket. CN217519229U provides a multi-layer membrane box structure, which only involves a method for processing the membrane box through the gasket, and also fails to achieve non-destructive removal of the gasket. Summary of the invention

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a non-destructive disassembly device and working method for a diaphragm box welding gasket.

[0006] A non-destructive disassembly device for a membrane box welding gasket provided by the present invention comprises: an inflation system and a clamping system;

[0007] The diaphragm box is fixed by the clamping system, and the diaphragm box is inflated by the inflation system;

[0008] The clamping system comprises: a lower plate, an upper plate, a fixed limiting component and a base;

[0009] The lower plate and the upper plate are arranged at two ends of the membrane box along the axial direction, the lower plate and the upper plate are limited in distance by a fixed limiting component, and the lower plate and the upper plate are rotatably mounted on the base and drive the membrane box to rotate.

[0010] Preferably, the fixed limiting assembly comprises: a limiting tube, a nut and a bolt;

[0011] A limiting tube is arranged between the lower plate and the upper plate, and the lower plate and the upper plate are fixed by bolts and nuts.

[0012] Preferably, the lower plate and the upper plate are configured to be disc-shaped, and the contact surfaces between the base and the lower plate and the upper plate are configured to be matching arc shapes, and the lower plate and the upper plate can rotate around the axis along the arc-shaped contact surfaces.

[0013] Preferably, arc-shaped grooves are arranged on the contact surfaces between the base and the lower plate and the upper plate, steel balls are arranged in the arc-shaped grooves, and the lower plate and the upper plate slide along one arc-shaped groove respectively.

[0014] Preferably, a through hole is provided between the lower plate and the upper plate;

[0015] The protruding part of the membrane box base passes through the through hole of the lower plate along the axis of the membrane box, and the guide rod of the membrane box passes through the through hole of the upper plate along the axis of the membrane box.

[0016] Preferably, a sink groove matching the shape of the membrane box is provided on one side of the lower plate and the upper plate close to the membrane box.

[0017] Preferably, a plurality of strip-shaped holes are machined on the upper plate and / or the lower plate.

[0018] Preferably, the length of the limiting tube is the designed height of the membrane box + the number of membrane box corrugations*0.5 mm, which is the extended length of the membrane box when the present application is in effect.

[0019] Preferably, the inflation system comprises: a pressure gauge, a filter, an inflation pipeline and an argon gas cylinder;

[0020] The argon gas cylinder is filled with nitrogen, and the argon gas cylinder is connected to the membrane box through a gas charging pipeline, and a pressure gauge and a filter are arranged at the end of the gas charging pipeline.

[0021] Preferably, a working method using the non-destructive disassembly device for the membrane box welding gasket comprises the following steps:

[0022] Step S1, clamping stage: placing the welded diaphragm box on the lower plate, inserting the outer contour of the diaphragm box base into the sink groove on the lower plate, installing one end of the limit tube on the lower plate, covering the upper plate, and fixing the diaphragm box guide rod radially after passing through the central through hole of the upper plate;

[0023] Step S2, inflation stage: the inflation pipeline of the inflation system is connected to the inflation hole of the membrane box base, and 0.1MPa nitrogen is filled into the membrane box. The membrane box stretches freely during the inflation process, and the guide rod slides along the central through hole of the upper plate until it reaches the limit height. The upper cover of the membrane box contacts the surface of the upper plate, and the inflation valve of the inflation system is closed;

[0024] Step S3, operation stage: place the clamped membrane box filled with 0.1MPa nitrogen on the base, insert the edges of the upper plate and the lower plate into the arc groove of the base, hold the strip hole on the upper plate or the lower plate and rotate it, drive the membrane box to rotate, and make the gasket fall freely from the corrugations of the membrane box, and continue to rotate until all the gaskets fall completely from the membrane box;

[0025] Step S4, disassembly stage: after the gasket is completely disassembled, the clamped membrane box is taken out from the base, the air is released, the bolts are loosened and the membrane box is taken out.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. This application fills the membrane box with 0.1MPa gas to stretch the membrane box to a certain extent, increases the membrane box corrugation spacing, and then rotates the membrane box to achieve automatic shedding of the welding gasket, thereby reducing the manual operation cost;

[0028] 2. This application increases the corrugation spacing of the diaphragm box and then rotates the diaphragm box, so that the welding gasket automatically falls off. The friction between the welding gasket and the diaphragm during the falling process is extremely small, which can avoid scratching the diaphragm when the welding gasket is removed;

[0029] 3. The present application increases the spacing between the corrugations of the diaphragm box so that the welding gasket automatically falls off. During the falling-off process of the welding gasket, the gasket itself is not subjected to stress, thereby avoiding deformation of the welding gasket and reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of the non-destructive disassembly device for the diaphragm box welding gasket;

[0032] Figure 2 It is a schematic diagram of the clamping system structure;

[0033] Figure 3 This is a partial enlarged view of the sink of the lower plate;

[0034] As shown in the figure:

[0035] DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0037] Example 1

[0038] like Figure 1-2 As shown, this embodiment includes: an inflation system 1 and a clamping system 2; the membrane box is fixed by the clamping system 2, and the membrane box is inflated by the inflation system 1. The inflation system 1 includes: a pressure gauge, a filter, an inflation pipeline and an argon gas bottle; the clamping system 2 includes: a lower plate 21, an upper plate 22, a limit tube 23, a nut 24, a bolt 25, a base 26 and a steel ball 27.

[0039] The argon gas cylinder is filled with nitrogen, and the argon gas cylinder is connected to the membrane box through a gas charging pipeline. A pressure gauge and a filter are arranged at the end of the gas charging pipeline.

[0040] The lower plate 21 and the upper plate 22 are arranged at both ends of the membrane box along the axial direction, and a limit tube 23 is arranged between the lower plate 21 and the upper plate 22. The length of the limit tube 23 is the maximum extension length of the membrane box in theory, which is the design height of the membrane box + the number of membrane box corrugations * 0.5 in this embodiment, in mm. The spacing between the lower plate 21 and the upper plate 22 is limited by the limit tube 23, and the spacing can meet the extension requirements of the membrane box. The lower plate 21 and the upper plate 22 are fixed by bolts 25 and nuts 24. The lower plate 21 and the upper plate 22 are rotatably mounted on the base 26 and drive the membrane box to rotate.

[0041] The principle that the lower plate 21 and the upper plate 22 can rotate relative to the base 26 is that the lower plate 21 and the upper plate 22 are set to be disc-shaped, and the contact surface between the base 26 and the lower plate 21 and the upper plate 22 is set to be an adaptive arc shape, and an arc-shaped groove is provided on the contact surface, and a steel ball 27 is provided in the arc-shaped groove. The lower plate 21 and the upper plate 22 slide along an arc-shaped groove respectively, so that the lower plate 21 and the upper plate 22 can rotate around the axis along the arc-shaped contact surface.

[0042] In one embodiment, a through hole is provided in the middle of the upper plate 22, and the membrane box guide rod passes through the through hole of the upper plate 22 along the axis of the membrane box. The through hole and the guide rod of the upper plate 22 play a guiding role during the inflation and extension process of the membrane box.

[0043] In one embodiment, Figure 3 As shown, a sink groove matching the shape of the membrane box is provided on one side of the lower plate 21 and the upper plate 22 close to the membrane box, so that the membrane box can stably rotate with the lower plate 21 and the upper plate 22 .

[0044] In one embodiment, a plurality of strip-shaped holes are processed on the upper plate 22 and the lower plate 21 , and the strip-shaped holes can not only reduce the weight of the upper plate 22 and the lower plate 21 , but also facilitate gripping.

[0045] The present embodiment also provides a working method of a non-destructive disassembly device for a diaphragm welding gasket, comprising the following steps: Step S1, clamping stage: placing the welded diaphragm on the lower plate 21, inserting the outer contour of the diaphragm base into the sink groove on the lower plate 21, installing one end of the limit tube 23 on the lower plate 21, covering the upper plate 22, and the diaphragm guide rod passing through the central through hole of the upper plate 22 and then being fixed radially; Step S2, inflation stage: the inflation pipeline of the inflation system 1 is connected to the inflation hole of the diaphragm base, and 0.1MPa nitrogen is filled into the diaphragm. The diaphragm is freely stretched during the inflation process, and the guide rod slides along the central through hole of the upper plate 22 until it reaches the limit. The upper cover of the diaphragm box contacts the surface of the upper plate 22, and the inflation valve of the inflation system 1 is closed; Step S3, operation stage: place the clamped diaphragm box filled with 0.1MPa nitrogen on the base 26, and the edges of the upper plate 22 and the lower plate 21 are inserted into the arc grooves of the base 26. Hold the strip holes on the upper plate 22 or the lower plate 21 and rotate to drive the diaphragm box to rotate, so that the gasket 3 falls freely from the corrugations of the diaphragm box, and continue to rotate until all the gaskets 3 fall completely from the diaphragm box; Step S4, disassembly stage: after the gasket 3 is completely disassembled, take out the clamped diaphragm box from the base 26, deflate, loosen the bolts 25 and take out the diaphragm box.

[0046] Example 2

[0047] Example 2 is a preferred example of Example 1.

[0048] like Figure 1-2As shown, this embodiment includes: an inflation system 1 and a clamping system 2. The inflation system 1 includes an argon gas bottle, a pressure gauge with an accuracy of less than 0.05MPa, an inflation pipeline and a filter; the clamping system 2 includes: an upper plate 22, a lower plate 21, a limit tube 23, a bolt 25, a nut 24 and a base 26. The upper plate 22 and the lower plate 21 are processed with grooves and through holes according to the outer contour of the membrane box for fixing the membrane box. The length of the limit tube 23 is determined by the theoretical height of the membrane box, and it is installed in the grooves of the upper plate 22 and the lower plate 21 together with the membrane box, and the upper plate 22 and the lower plate 21 are connected by bolts 25 and nuts 24. The gas used in the inflation system 1 is nitrogen, and a pressure gauge is connected and an inflation pipeline is provided. The base 26 is processed with an arc groove, and a smooth stainless steel bead is installed in the arc groove. The width of the arc groove is consistent with the thickness of the upper plate 22 and the lower plate 21. Accordingly, the clamped upper plate 22, the lower plate 21 and the membrane box can be placed vertically in the two arc grooves of the base 26 and can rotate freely. During operation, 0.1MPa nitrogen is filled into the clamped membrane box through the inflation pipeline, and the membrane box is stretched to the limit height, supporting the upper plate 22 and the lower plate 21. The device and the membrane box are placed in the arc groove of the base 26 as a whole, and the upper plate 22 is rotated to drive the membrane box to rotate, so that the gasket 3 between the corrugations of the membrane box falls freely, and the rotation is continued, and the gasket 3 is finally completely detached, and finally the gasket 3 is deflated and the membrane box is taken out.

[0049] A membrane box base is arranged at one end of the membrane box, and a membrane box cover is arranged at the other end, with a corrugated structure in the middle, and the gasket 3 is stuck between the corrugated structures.

[0050] The lower plate 21 is provided with a 2mm deep groove according to the outer contour of the membrane box base to ensure that the membrane box does not shake or fall in the device; a φ90mm through hole is opened in the center of the lower plate 21 for installing the protruding part of the membrane box base, and an area for connecting the inflation pipeline is reserved; 4 strip holes are provided on the lower plate 21 to reduce weight and facilitate hand-held operation.

[0051] The upper plate 22 is provided with a 2mm deep groove according to the outer contour of the membrane box upper cover, and a through hole with the same diameter as the membrane box guide rod is processed in the center of the upper plate 22 for the guide rod to pass through; 4 strip holes are provided on the upper plate 22 to reduce weight and facilitate hand-held operation.

[0052] The length of the limiting tube 23 is the design height of the membrane box product (mm) + the number of corrugations * 0.5 (mm), and the inner diameter of the limiting tube 23 is φ24mm. Accordingly, a 2mm deep limiting tube groove is processed around the bolt holes of the upper plate 22 and the lower plate 21.

[0053] The base 26 is provided with an arc-shaped groove with a width of 7.5 mm, which matches the thickness of the upper plate 22 and the lower plate 21. Smooth stainless steel beads 27 are placed in the arc-shaped groove to ensure that the edges of the upper plate 22 and the lower plate 21 slide freely in the arc-shaped groove.

[0054] The operation steps of the non-destructive disassembly device for the membrane box welding gasket of this embodiment are as follows:

[0055] Clamping stage: place the welded diaphragm box on the lower plate 21, insert the outer contour of the diaphragm box base into the contour groove of the lower plate 21, put the limiting tube 23 into the corresponding groove, cover the upper plate 22, pass the diaphragm box guide rod through the center through hole of the upper plate 22, and use bolts 25 and nuts 24 to install the lower plate 21 and the upper plate 22.

[0056] Inflation stage: connect the inflation pipeline to the inflation hole of the diaphragm box base, fill 0.1MPa nitrogen into the diaphragm box, the diaphragm box stretches freely during the inflation process, and the guide rod slides along the central through hole of the upper plate 22 to ensure that the diaphragm box does not deviate until it reaches the limit height. The diaphragm box cover contacts the surface of the upper plate 22, close the inflation valve, and tighten it.

[0057] Operation stage: place the clamped membrane box filled with 0.1MPa nitrogen on the base 26, and insert the edges of the upper plate 22 and the lower plate 21 into the arc-shaped grooves of the base 26. Hold the strip holes on the upper plate 22 or the lower plate 21 and rotate them to drive the membrane box to rotate, so that the gasket 3 falls freely from the corrugations of the membrane box. Continue to rotate to ensure that all gaskets 3 fall completely from the membrane box.

[0058] Disassembly stage: After the gasket 3 is completely disassembled, the clamped diaphragm box is taken out from the base 26, the air is released, the bolts 25 are loosened, the diaphragm box is taken out, and cleaned.

[0059] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A non-destructive disassembly device for a membrane box welding gasket, characterized in that: include: An inflation system (1) and a clamping system (2); The diaphragm box is fixed by the clamping system (2), and the diaphragm box is inflated by the inflation system (1); The clamping system (2) comprises: a lower plate (21), an upper plate (22), a fixed limiting component and a base (26); The lower plate (21) and the upper plate (22) are arranged at two ends of the membrane box along the axial direction, and the lower plate (21) and the upper plate (22) are limited in distance by a fixed limiting assembly. The lower plate (21) and the upper plate (22) are rotatably mounted on the base (26) and drive the membrane box to rotate.

2. The non-destructive disassembly device for the membrane box welding gasket according to claim 1 is characterized in that: The fixed limiting assembly comprises: a limiting tube (23), a nut (24) and a bolt (25); A limiting tube (23) is provided between the lower plate (21) and the upper plate (22), and the lower plate (21) and the upper plate (22) are fixed by bolts (25) and nuts (24).

3. According to claim 2, the non-destructive disassembly device for the membrane box welding gasket is characterized in that: The lower plate (21) and the upper plate (22) are configured to be disc-shaped, and the contact surfaces between the base (26) and the lower plate (21) and the upper plate (22) are configured to be compatible arc-shaped, and the lower plate (21) and the upper plate (22) can rotate around the axis along the arc-shaped contact surfaces.

4. The non-destructive disassembly device for the membrane box welding gasket according to claim 3 is characterized in that: Arc-shaped grooves are arranged on the contact surfaces between the base (26) and the lower plate (21) and the upper plate (22), and steel balls (27) are arranged in the arc-shaped grooves. The lower plate (21) and the upper plate (22) slide along an arc-shaped groove respectively.

5. According to claim 4, the non-destructive disassembly device for the membrane box welding gasket is characterized in that: A through hole is provided in the middle of the upper plate (22), and a guide rod extending from the membrane box along the axis passes through the through hole of the upper plate (22).

6. The non-destructive disassembly device for the membrane box welding gasket according to claim 5 is characterized in that: The lower plate (21) and the upper plate (22) are provided with a sink groove matching the shape of the membrane box on one side close to the membrane box.

7. The non-destructive disassembly device for the membrane box welding gasket according to claim 6 is characterized in that: A plurality of strip-shaped holes are machined on the upper plate (22) and / or the lower plate (21).

8. The non-destructive disassembly device for the membrane box welding gasket according to claim 2 is characterized in that: The length of the limiting tube (23) is the design height of the membrane box + the number of membrane box corrugations*0.5 mm.

9. The non-destructive disassembly device for the membrane box welding gasket according to claim 7, characterized in that: The inflation system (1) comprises: a pressure gauge, a filter, an inflation pipeline and an argon gas cylinder; The argon gas cylinder is filled with nitrogen, and the argon gas cylinder is connected to the membrane box through a gas charging pipeline, and a pressure gauge and a filter are arranged at the end of the gas charging pipeline.

10. A working method using the non-destructive disassembly device for the membrane box welding gasket according to claim 9, characterized in that: The following steps are involved: Step S1, clamping stage: the welded diaphragm box is placed on the lower plate (21), the outer contour of the diaphragm box base is inserted into the sink groove on the lower plate (21), one end of the limit tube (23) is installed on the lower plate (21), the upper plate (22) is covered, and the guide rod of the diaphragm box passes through the central through hole of the upper plate (22) and is fixed radially; Step S2, inflation stage: the inflation pipeline of the inflation system (1) is connected to the inflation hole of the membrane box base, and 0.1 MPa nitrogen is filled into the membrane box. The membrane box stretches freely during the inflation process, and the guide rod slides along the central through hole of the upper plate (22) until it reaches the limit height. The upper cover of the membrane box contacts the surface of the upper plate (22), and the inflation valve of the inflation system (1) is closed; Step S3, operation stage: the clamped membrane box filled with 0.1 MPa nitrogen is placed on the base (26), the edges of the upper plate (22) and the lower plate (21) are inserted into the arc-shaped grooves of the base (26), and the strip holes on the upper plate (22) or the lower plate (21) are held and rotated to drive the membrane box to rotate, so that the gasket (3) falls freely from the corrugations of the membrane box, and the rotation is continued until all the gaskets (3) fall completely from the membrane box; Step S4, disassembly stage: after the gasket (3) is completely disassembled, the clamped membrane box is taken out from the base (26), the air is released, the bolts (25) are loosened and the membrane box is taken out.

Images