Mounting structure of a compression load energy accumulator in a sealing device

Abstract

The application discloses a compression load energy accumulator, which comprises two groups of connecting members, the axial lines of the two groups of connecting members are arranged in the same line, the two groups of connecting members are slidably connected along the extension direction of the axial lines, the compression load energy accumulator further comprises elastic members for providing the required force for the mutual separation of the two groups of connecting members, the elastic members are arranged between the two groups of connecting members, the axial lines of the elastic members are arranged in the same line with the axial lines of the two groups of connecting members, and at least one group of connecting members is provided with a connecting structure for fixed connection with other components. The compression load energy accumulator provided by the application can store and compensate the compression load along the axial direction, so that the two elements connected with the compression load energy accumulator can be kept in compression, the equipment performance is stabilized, and the safety is improved.

Description

Technical Field

[0001] This invention relates to the field of sealing technology, and in particular to an installation structure for a compression load accumulator in a sealing device. Background Technology

[0002] Industrial equipment used in nuclear power, thermal power, chemical, and energy sectors often operates under harsh conditions such as high temperature, high pressure, and alternating loads caused by thermal shock and media pressure fluctuations. Examples include heat exchangers, reaction vessels, and sealed pipelines. In such equipment, due to differences in the thermal expansion coefficients of the materials used in the structural components and temperature differences between different parts during operation, the thermal deformation of different components will be asynchronous when the internal temperature changes. This leads to relative displacement of the components, and may even cause some components that were originally pressed together to separate or develop gaps. Under these circumstances, the equipment's functionality will be reduced or it may even fail.

[0003] Specifically, equipment such as heat exchangers and high-temperature reaction vessels typically includes gaskets to seal different fluid media (including high-temperature media) within a specific cavity. One side of the gasket is pressed against a flange, while the other side rests against the inner cavity of the equipment. When temperature changes occur, the contact surfaces between the flange and the gasket may shift relative to each other, causing a decrease in the compression of the seal, or even separation of the contact surfaces. When the compression of the seal decreases, the sealing load decreases accordingly. When the load decreases to the critical value for seal leakage, the seal will fail and leak. When the contact surfaces between the flange and the gasket separate, a more serious leak will occur, causing the internal medium to be blown out and resulting in a safety accident. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a compression load energy storage device that can compensate for the compression load when two or more components with asynchronous thermal deformation need to be pressed together.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A compression load accumulator includes two sets of connectors, the centerlines of which are collinear and the two sets of connectors are slidably connected relative to each other along the extension direction of the centerlines. The compression load accumulator also includes an elastic element for providing a required force to keep the two sets of connectors away from each other. The elastic element is disposed between the two sets of connectors, and the centerline of the elastic element is collinear with the centerlines of the two sets of connectors. At least one set of connectors is provided with a connection structure for fixed connection with other components.

[0007] Preferably, each set of the connecting members has a pressure cap, and along the extension direction of the axis, the two sets of pressure caps are respectively disposed at the two ends of the compression load energy storage device, and the two ends of the elastic member along its own axial direction abut against the two sets of pressure caps respectively.

[0008] More preferably, each set of the connectors has an extension post, which is fixed on the pressure cap. The outer diameter of the pressure cap is larger than the outer diameter of the extension post, and the elastic element is simultaneously sleeved on both sets of the extension posts.

[0009] Preferably, the two sets of connectors are a first connector and a second connector. The first connector is fixedly provided with a guide, and the second connector is provided with a guide hole that cooperates with the guide. The guide hole extends along the extension direction of the axis, and the guide can be slidably inserted into the guide hole along the extension direction of the guide hole.

[0010] More preferably, the centerline of the guide hole is collinear with the centerline of the second connector.

[0011] More preferably, the guide is a bolt, which is threadedly fixed to the first connector.

[0012] More preferably, a first limiting structure is provided between the guide member and the guide hole to restrict the second connector from disengaging from the first connector in a direction away from the first connector.

[0013] More preferably, a second limiting structure for limiting the compression amount of the elastic element is further provided between the first connector and the second connector.

[0014] More preferably, the first connector has a first outer end face and a first inner end face disposed on opposite sides of its own axial direction, and the second connector has a second outer end face and a second inner end face disposed on opposite sides of its own axial direction. Along the extension direction of the axis, the first outer end face, the first inner end face, the second inner end face, and the second outer end face are arranged sequentially. The clamping load energy storage device has an energy release state and an energy storage state. In the energy release state, the first inner end face and the second inner end face are disposed with a gap, and the distance between the first inner end face and the second inner end face is x1. The distance between the end face of the guide member away from the first connector and the second outer end face is x2, and x2≥x1. In the energy storage state, the gap between the first inner end face and the second inner end face is reduced, or the first inner end face abuts against the second inner end face.

[0015] Preferably, the elastic element includes at least two spring pieces arranged sequentially along the extension direction of the axis, with adjacent spring pieces abutting against each other. Each spring piece has a first surface and a second surface disposed on two sides opposite to each other in its thickness direction. Both the first surface and the second surface are arc surfaces curved along the extension direction of the axis, and the first surface and the second surface of the same spring piece have the same curvature direction.

[0016] More preferably, the first surfaces of two adjacent spring pieces have the same or different bending directions.

[0017] More preferably, the spring is disc-shaped.

[0018] Preferably, both sets of the connecting members and the elastic members are made of metal materials.

[0019] Due to the application of the above technical solution, the clamping load storage device provided by the present invention can be set on one side of two components to be clamped. The clamping direction of the two components is consistent with the sliding direction of the two sets of connecting parts, and one set of connecting parts is fixedly set with one component. When the two components are relatively displaced, the two sets of connecting parts can move closer or further apart to achieve clamping load compensation. When the two components are close to each other, the two sets of connecting parts move closer to each other, the elastic element is compressed, and the clamping load storage device stores a portion of the clamping load. When the two components are far apart, the two sets of connecting parts move further apart, the elastic element stretches relatively, the clamping load storage device releases part of the load and compensates for it to the component connected to it, so that the two components can maintain a clamped state, stabilize equipment performance, and improve safety. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Appendix Figure 1 This is a top view of the compression load energy storage device in a specific embodiment of the present invention;

[0022] Appendix Figure 2 for Figure 1 A cross-sectional view of the middle section (AA), showing the energy storage device under the pressure load in a state of energy release;

[0023] Appendix Figure 3 for Figure 1 A cross-sectional view of the middle section AA shows the compressive load energy storage device in an energy storage state.

[0024] Appendix Figure 4This is a schematic diagram illustrating a specific application of the compression load energy storage device in this embodiment;

[0025] Appendix Figure 5 for Figure 4 Enlarged schematic diagram at point B, showing the device to be sealed in a pre-tightened state at room temperature;

[0026] Appendix Figure 6 for Figure 4 Enlarged schematic diagram at point B, showing the device to be sealed in a high-temperature, uncompensated state.

[0027] Appendix Figure 7 for Figure 4 Enlarged schematic diagram at point B, showing the device to be sealed in a high-temperature compensation state;

[0028] Wherein: 1000, compression load storage device; 1100, first connecting member; 1100a, first outer end face; 1100b, first inner end face; 1200, second connecting member; 1200a, second outer end face; 1200b, second inner end face; 1300, elastic member;

[0029] 11. Gland; 12. Extension post; 2. Guide; 21. Head; 22. Smooth rod; 23. Screw; 3. Guide hole; 31. Wide hole; 32. Narrow hole; 4. Threaded hole; 5. Spring; 5a. First surface; 5b. Second surface; 6. Fixing bolt; X. Centerline; Y. Axial direction of the inner cavity;

[0030] 2000, sealing device; 2100, cavity; 2100a, working cavity; 2100b, mounting cavity; 2101, mounting platform; 2101a, mounting surface; 2200, flange cover; 2210, mounting ring; 2211, mounting hole; 2300, elastic seal; 2400, top cover; 2401, thread; 2500, load transfer disc; 2601, clamping bolt; 2602, pressure rod; 2603, pressure ring. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more readily understood by those skilled in the art, but they are not intended to limit the present invention.

[0032] See Figures 1 to 3The diagram shows a clamping load accumulator 1000 used to compensate for the clamping load between two components that need to be clamped together. The clamping load accumulator 1000 includes two sets of connecting members and one set of elastic members 1300. The two sets of connecting members are specifically a first connecting member 1100 and a second connecting member 1200. The first connecting member 1100, the second connecting member 1200, and the elastic member 1300 are arranged collinearly along the axis X. The first connecting member 1100 and the second connecting member 1200 can be slidably connected relative to each other along the extension direction of the axis X. The elastic member 1300 is disposed between the two sets of connecting members and is used to provide the force required to move the two sets of connecting members away from each other.

[0033] In this embodiment, each set of connectors has a pressure cap 11 and an extension post 12. The extension post 12 is fixed on the pressure cap 11, and the two are cylindrical with a coaxial centerline X. The outer diameter of the pressure cap 11 is larger than the outer diameter of the extension post 12. The outer diameters of the pressure cap 11 and the extension post 12 of the two sets of connectors are equal. Along the extension direction of the centerline X, the two sets of pressure caps 11 are respectively located at the two ends of the clamping load energy storage device 1000, and the two sets of extension posts 12 are arranged opposite to each other. The elastic element 1300 is simultaneously fitted onto two sets of extension columns 12. The two ends of the elastic element 1300 along its own axial direction abut against two sets of pressure caps 11, respectively. The outer diameter of the elastic element 1300 is no larger than the outer diameter of the pressure cap 11, and the inner diameter of the elastic element 1300 is slightly larger than the outer diameter of the extension column 12. This facilitates the overall assembly of the compression load storage device 1000, and ensures a stable connection between the elastic element 1300 and the connecting parts. The elastic element 1300 is not disturbed by the extension columns 12 during compression deformation. Thus, the elastic element 1300 and the two sets of connecting parts can interact. The two sets of pressure caps 11 can compress the elastic element 1300 axially, and the elastic element 1300 can also push the two sets of pressure caps 11 away from each other axially.

[0034] Furthermore, a guide member 2 is fixedly provided on the first connector 1100, and a guide hole 3 that mates with the guide member 2 is provided on the second connector 1200. The axis of the guide hole 3 is the axis X. The guide member 2 can be slidably inserted into the guide hole 3 along the extension direction of the guide hole 3, thereby realizing the sliding guidance of the first connector 1100 and the second connector 1200. In this embodiment, the guide member 2 is specifically a bolt, which includes a head 21, a smooth rod 22 and a screw 23 connected sequentially along the extension direction of the axis X. The screw 23 is fixedly connected to the first connector 1100 by threads, and the head 21 and the smooth rod 22 can slide relative to each other in the guide hole 3.

[0035] A first limiting structure is also provided between the guide member 2 and the guide hole 3 to restrict the sliding separation of the second connector 1200 and the first connector 1100. Specifically, the guide hole 3 includes a wide hole 31 and a narrow hole 32 connected along its own axial direction. The inner diameter of the wide hole 31 is greater than the outer diameter of the head 21, the inner diameter of the narrow hole 32 is greater than the outer diameter of the smooth rod portion 22, so that the head 21 and the narrow hole 32 constitute the above-mentioned limiting structure, and the head 21 can only slide within the wide hole 31.

[0036] In addition, in this embodiment, the first connector 1100 is also provided with a connection structure for fixed connection with other components, specifically a threaded hole 4 opened on the pressure cover 11, so that an element to be pressed can be fixedly connected to the first connector 1100 by bolts.

[0037] See Figure 2 As shown, in this embodiment, the elastic element 1300 includes a plurality of spring pieces 5 arranged sequentially along the extension direction of the axis X. Each spring piece 5 is disc-shaped with a hollow center, allowing it to slide relative to the extension post 12. Each spring piece 5 has a first surface 5a and a second surface 5b located on opposite sides of its thickness direction. The first surface 5a faces the second connector 1200, and the second surface 5b faces the first connector 1100. Both the first surface 5a and the second surface 5b are curved surfaces along the extension direction of the axis X, and the first surface 5a and the second surface 5b of the same spring piece 5 have the same curvature. Adjacent spring pieces 5 abut against each other. In this embodiment, the curvature directions of the first surfaces 5a of adjacent spring pieces 5 are different. Thus, the axial compression deformation of each spring piece 5 can be superimposed to form the axial deformation of the entire clamping load energy storage device 1000. The specific number of spring pieces 5 should be calculated and selected according to the clamping compensation load required for the actual application of the clamping load energy storage device 1000, and generally 2 to 10 pieces are used.

[0038] See Figure 2 and Figure 3As shown, in this embodiment, the guide hole 3 is designed as a through hole. The first connector 1100 has a first outer end face 1100a and a first inner end face 1100b respectively disposed on opposite sides of its own axial direction. The second connector 1200 has a second outer end face 1200a and a second inner end face 1200b respectively disposed on opposite sides of its own axial direction. Along the extension direction of the axis X, the first outer end face 1100a, the first inner end face 1100b, the second inner end face 1200b, and the second outer end face 1200a are arranged sequentially. Depending on the compression of the elastic element 1300, the compression load energy storage device 1000 has an energy release state and an energy storage state: In the energy release state, the elastic element 1300 is freely extended, and there is a gap between the first inner end face 1100b and the second inner end face 1200b, with a gap distance of x1, and the distance between the outer end face of the head 21 and the second outer end face 1200a is x2, x2≥x1; In the energy storage state, the elastic element 1300 is compressed axially, and the gap between the first inner end face 1100b and the second inner end face 1200b is reduced to x'1, and the distance between the outer end face of the head 21 and the second outer end face 1200a is reduced to x'2, x'2≥x'1≥0. In this way, it can be ensured that the head 21 will not extend beyond the second outer end face 1200 and hit other components in the energy storage state, thus avoiding the head 21 bearing the clamping load and destroying the original working principle of the clamping load energy storage device 1000, which would cause the clamping load energy storage device 1000 to fail.

[0039] Furthermore, a second limiting structure is provided between the first connector 1100 and the second connector 1200 to limit the compression of the elastic element 1300, preventing the elastic element 1300 from being crushed as the two sets of pressure caps 11 approach each other. Specifically, the two sets of extension posts 12 constitute the second limiting structure, and the sum of the lengths of the two sets of extension posts 12 should be equal to the length of the elastic element 1300 when it is under maximum allowable compression (i.e., if the elastic element 1300 is further compressed, it will be crushed and lose its elasticity). Thus, when the first connector 1100 and the second connector 1200 are fully fitted and x'1=0, each spring piece 5 is under maximum allowable compression, and the first surface 5a and the second surface 5b of the spring piece 5 are still curved surfaces, and two adjacent spring pieces 5 will not be fully fitted.

[0040] The compression load storage device 1000 in this embodiment is mainly used in some high-temperature, high-pressure equipment that requires sealing. Therefore, the first connector 1100, the second connector 1200 and the elastic element 1300 are all made of high-temperature resistant metal materials. The elastic element 1300 can be made of nickel-based high-temperature alloys such as Inconel 718, Inconel 750, and austenitic stainless steel, so as to maintain stable working performance under harsh working conditions.

[0041] See Figures 4 to 7The diagram shown is a schematic diagram of a specific application of the clamping load accumulator 1000 in this embodiment. The clamping load accumulator 1000 is disposed in a sealing device 2000 to keep the flange cover 2200 and the cavity 2100 sealed.

[0042] Specifically, the device to be sealed 2000 can be a high-temperature, high-pressure vessel or reactor, comprising a cavity 2100 with a cylindrical inner cavity. A flange cover 2200, capable of sliding relative to the cavity along its axial direction Y, is provided within the inner cavity. An annular elastic seal 2300 is provided between the flange cover 2200 and the cavity 2100 to seal both the flange cover 2200 and the cavity 2100 along the axial direction Y. Thus, the flange cover 2200 and the elastic seal 2300 can divide the inner cavity into a non-communicating working cavity 2100a and an installation cavity 2100b. During use, a high-temperature, high-pressure fluid medium is introduced into the working cavity 2100a, while the installation cavity 2100b is open to the atmosphere. To ensure the working performance and safety of the device to be sealed 2000, the flange cover 2200 must strictly seal the working cavity 2100a; otherwise, safety accidents such as media leakage may occur.

[0043] In this embodiment, a mounting platform 2101 protrudes radially inward along the inner periphery of the cavity 2100. The mounting platform 2101 has a mounting surface 2101a facing the flange cover 2200. The elastic seal 2300 abuts against the mounting surface 2101a and the flange cover 2200 on opposite sides along its thickness direction, respectively. A top cover 2400 is also fixedly installed inside the mounting cavity 2100b, and the top cover 2400 is fixedly connected to the cavity 2100 by threads 2401. A mounting ring 2210 is fixedly installed on the side of the flange cover 2200 near the top cover 2400, and a load transfer disk 2500 is also provided between the mounting ring 2210 and the top cover 2400. The centerlines of the top cover 2400, the load transfer disk 2500, the mounting ring 2210, and the flange cover 2200 extend collinearly and are all parallel to the axial direction Y of the inner cavity, and adjacent ones abut against each other. Thus, the top cover 2400 can apply a load toward the mounting surface 2101a to the flange cover 2200 through the load transfer disc 2500 and the mounting ring 2210, pressing the flange cover 2200 onto the elastic seal 2300 to achieve a seal.

[0044] In this embodiment, the cavity 2100 is made of carbon steel, and the flange cover 2200 is made of stainless steel. Since the linear expansion coefficient α1 of carbon steel is less than that of stainless steel, the sealing device 2000 has the following problems during use: When the flange cover 2200 is assembled into the cavity 2100 at room temperature, the top cover 2400 is screwed inwards, causing the flange cover 2200 to be pressed against the elastic sealing element 2300. The flange cover 2200 has an appropriate preload, and the elastic sealing element 2300 seals the working cavity 2100a. After the sealing device 2000 starts working, a high-temperature medium is introduced into the working cavity 2100a. The temperature inside the working chamber 2100a gradually rises due to the thermal expansion of the material, while the mounting chamber 2100b remains at a lower temperature close to room temperature. Consequently, the flange cover 2200 and the portion of the chamber 2100 that are in direct contact with the working chamber 2100a begin to expand due to heat. However, because the linear expansion coefficients of the flange cover 2200 and the chamber 2100 are different, their deformation rates along the axial direction Y of the inner cavity are also different. The flange cover 2200 will bulge towards the mounting chamber 2100b at a faster rate, gradually creating a displacement difference between the flange cover 2200 and the chamber 2100. This reduces the compression and clamping load of the elastic seal 2300. —See [link to relevant documentation] Figure 6 As shown, if compensation for displacement and clamping load cannot be provided, a displacement difference gap of ΔL may occur between the flange cover 2200 and the elastic seal 2300, leading to serious leakage.

[0045] To address this issue, the aforementioned clamping load accumulator 1000 is applied in the sealing device 2000 in this embodiment. Specifically, the mounting ring 2210 has a mounting hole 2211 on the side facing the load transfer disk 2500. The clamping load accumulator 1000 is inserted into this mounting hole 2211, and the first connecting member 1100 is fixedly connected to the mounting ring 2210 by a fixing bolt 6. The second connecting member 1200 can abut against the load transfer disk 2500, with the axis X parallel to the axial direction Y of the inner cavity. Thus, the clamping load accumulator 1000 is equivalent to abutting between the top cover 2400 and the flange cover 2200, so that the flange cover 2200 is set on an elastic base and can slide relative to the inner cavity along the axial direction Y under the force of the clamping load accumulator 1000.

[0046] Furthermore, to fully realize the compensation of the clamping load, in this embodiment, multiple sets of mounting holes 2211 are evenly spaced along the circumference of the mounting ring 2210. Each set of mounting holes 2211 is provided with a set of clamping load accumulators 1000, so that multiple sets of clamping load accumulators 1000 can uniformly apply the clamping load to the flange cover 2200. In the plane perpendicular to the axial Y of the inner cavity, the projection of the load transfer disk 2500 is a ring, and the projections of all clamping load accumulators 1000 are located inside the ring. That is, the load transfer disk 2500 completely covers all clamping load accumulators 1000 in the direction of applied load, making the load transfer more uniform.

[0047] Furthermore, the top cover 2400 is also provided with a clamping assembly for pressing the load transfer disk 2500 against the clamping load accumulator 1000, including clamping bolts 2601, clamping rods 2602, and clamping rings 2603. The clamping bolts 2601 and clamping rods 2602 are arranged in multiple sets at intervals along the circumference of the top cover 2400, each corresponding to one another, and further corresponding to one another clamping load accumulator 1000. That is, each clamping load accumulator 1000 has a set of clamping bolts 2601 and clamping rods 2602 extending along the coaxial line X. The clamping ring 2603 is annular and is arranged along the axial direction Y of its inner cavity between the clamping rods 2602 and the load transfer disk 2500, with all the clamping rods 2602 pressing against the clamping ring 2603. Thus, by setting up the clamping component, one side of the second connector 1200 has stable support, which is beneficial to the sliding extension and contraction of the first connector 1100 and the transmission of load.

[0048] In this embodiment, the working principle of the compression load accumulator 1000 in the sealing device 2000 is as follows:

[0049] See Figure 5 As shown, at room temperature, the flange cover 2200, the clamping load accumulator 1000, the load transfer plate 2500, the top cover 2400, etc. are sequentially assembled into the cavity 2100, and pre-tightening is achieved through the clamping assembly. The elastic element 1300 in the clamping load accumulator 1000 is moderately compressed, providing a pre-tightening load to the flange cover 2200.

[0050] See Figure 7As shown, after the working chamber 2100a begins to heat up, as mentioned earlier, the flange cover 2200 tends to move away from the elastic seal 2300. At this time, under the action of the elastic element 1300, the first connecting member 1100 and the second connecting member 1200 move away from each other. The first connecting member 1100 applies a load towards the elastic seal 2300 to the flange cover 2200 and pushes the flange cover 2200 towards the mounting surface 2101a, so that the flange cover 2200 can still maintain contact with the elastic seal 2300, and the clamping load between the two is sufficient to seal the medium in the working chamber 2100a and prevent leakage. Correspondingly, under the push of the first connecting member 1100, a gap of ΔL will appear between the mounting ring 2210 and the load transfer disc 2500. In this way, the clamping load accumulator 1000 realizes the compensation of the clamping load between the flange cover 2200 and the chamber 2100 under high temperature conditions, so that the two can always maintain a seal and the working performance is stable.

[0051] It should be noted that in this embodiment, due to the relative position of the flange cover 2200 and the mounting surface 2101a, and the selection of the specific materials for the flange cover 2200 and the cavity 2100, the flange cover 2200 tends to move away from the elastic seal 2300 during the heating process, requiring the provision of a compressive load compensation. In other embodiments, for example, when the flange cover 2200 is made of carbon steel and the cavity 2100 is made of stainless steel, the thermal expansion rate of the cavity 2100 in the working cavity 2100a will be faster than that of the flange cover 2200, and the working process of the compressive load accumulator 1000 will be reversed: at room temperature, the compressive load accumulator 1000 provides a preload to the flange cover 2200; during the heating process of the working cavity 2100a, the mounting surface 2101a bulges towards the mounting cavity 2100b at a faster speed than the flange cover 2200, thereby pressing the flange cover 2200 tightly, preventing leakage, and at this time the elastic seal 2300 is compressed. The component 1300 is further compressed, and the clamping load accumulator 1000 provides a clamping load to the flange cover 2200 that is slightly larger than the preload. However, due to the limiting effect of the two sets of extension columns 12, each spring piece 5 is protected from being crushed. During the cooling process of the working chamber 2100a, the mounting surface 2101a contracts toward the working chamber 2100a at a faster speed than the flange cover 2200. At this time, the flange cover 2200 and the mounting surface 2101a will tend to move away from each other. The clamping load accumulator 1000 needs to provide a compensating load to the flange cover 2200 so that the flange cover 2200 and the mounting surface 2101a remain sealed.

[0052] In addition, in this embodiment, one end of the compression load accumulator 1000 is fixedly connected to the mounting ring 2210, and the other end directly abuts against the load transfer disk 2500, which facilitates the installation of the sealing device 2000 with an inner cavity from the inside out. In other embodiments, the compression load accumulator 1000 can also be installed in the following ways: (1) the first connecting member 1100 abuts against the mounting ring 2210, and the second connecting member 1200 is fixedly connected to the load transfer disk 2500; (2) the first connecting member 1100 is fixedly connected to the mounting ring 2210, and the second connecting member 1200 is fixedly connected to the load transfer disk 2500; (3) the first connecting member 1100 abuts against the mounting ring 2210, and the second connecting member 1200 abuts against the load transfer disk 2500. None of the above connection methods affect the working principle of the compression load accumulator 1000.

[0053] In summary, the clamping load accumulator 1000 provided by the present invention can compensate for the displacement difference and sealing clamping load of the two components to be sealed due to asynchronous thermal deformation or other reasons, so that the two components can always be clamped and sealed when the operating conditions change, thereby improving the performance of the equipment.

[0054] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An installation structure for a clamping load accumulator in a sealing device, wherein the clamping load accumulator is disposed in the sealing device to maintain a seal between the flange cover and the cavity, characterized in that: The clamping load accumulator includes two sets of connecting members, whose axes are collinear. The two sets of connecting members are slidably connected relative to each other along the extension direction of the axes. The clamping load accumulator also includes an elastic element for providing a required force to keep the two sets of connecting members apart. The elastic element is disposed between the two sets of connecting members, and its axis is collinear with the axes of the two sets of connecting members. At least one set of connecting members is provided with a connection structure for fixed connection with other components. The elastic element includes at least two spring pieces arranged sequentially along the extension direction of the axis, with adjacent spring pieces abutting against each other. Each spring piece has a first surface and a second surface located on opposite sides of its thickness direction. Both the first surface and the second surface are arc surfaces curved along the extension direction of the axis, and the first surface and the second surface of the same spring piece have the same curvature direction, while the first surfaces of adjacent spring pieces have different curvature directions. The compression load accumulator is disposed between the load transfer disk and the mounting ring. The top cover applies a load to the flange cover through the load transfer disk and the mounting ring to press the flange cover onto the elastic sealing element to achieve a seal. The mounting ring has multiple sets of mounting holes spaced apart circumferentially on the side facing the load transfer disk, and each set of mounting holes is provided with a set of the compression load accumulator.

2. The mounting structure of the compression load accumulator in the sealing device according to claim 1, characterized in that: Each set of the connecting members has a pressure cap. Along the extension direction of the axis, the two sets of pressure caps are respectively disposed at the two ends of the clamping load energy storage device, and the two ends of the elastic member along its own axial direction abut against the two sets of pressure caps respectively.

3. The mounting structure of the compression load accumulator in the sealing device according to claim 2, characterized in that: Each set of the connectors has an extension post, which is fixed to the gland. The outer diameter of the gland is larger than the outer diameter of the extension post, and the elastic element is simultaneously sleeved on both sets of the extension posts.

4. The mounting structure of the compression load accumulator in the sealing device according to claim 1, characterized in that: The two sets of connectors are a first connector and a second connector. The first connector is fixed with a guide, and the second connector is provided with a guide hole that cooperates with the guide. The guide hole extends along the extension direction of the axis, and the guide can be slidably inserted into the guide hole along the extension direction of the guide hole.

5. The mounting structure of the compression load accumulator in the sealing device according to claim 4, characterized in that: The centerline of the guide hole is collinear with the centerline of the second connector; and / or, the guide is a bolt, which is fixedly connected to the first connector by threads.

6. The mounting structure of the compression load accumulator in the sealing device according to claim 4, characterized in that: A first limiting structure is provided between the guide member and the guide hole to restrict the second connector from disengaging from the first connector in a direction away from the first connector; and / or, a second limiting structure is further provided between the first connector and the second connector to restrict the compression amount of the elastic member.

7. The mounting structure of the compression load accumulator in the sealing device according to claim 4, characterized in that: The first connector has a first outer end face and a first inner end face disposed on opposite sides of its own axial direction. The second connector has a second outer end face and a second inner end face disposed on opposite sides of its own axial direction. Along the extension direction of the axis, the first outer end face, the first inner end face, the second inner end face, and the second outer end face are arranged sequentially. The clamping load energy storage device has an energy release state and an energy storage state. In the energy release state, there is a gap between the first inner end face and the second inner end face, and the distance between the first inner end face and the second inner end face is x1. The distance between the end face of the guide member away from the first connector and the second outer end face is x2, where x2 ≥ x1. In the energy storage state, the gap between the first inner end face and the second inner end face is reduced, or the first inner end face abuts against the second inner end face.

8. The mounting structure of the compression load accumulator in the sealing device according to claim 1, characterized in that: The shrapnel is disc-shaped.

9. The mounting structure of the compression load accumulator in the sealing device according to any one of claims 1 to 8, characterized in that: Both sets of connecting parts and the elastic element are made of metal.

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