CN217603622U - Straight pipe pressure balance type bellows expansion joint with distributing type floating structure - Google Patents
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Abstract
The utility model provides a straight tube pressure balance type bellows expansion joint with distributing type floating structure, include: the number of the working corrugated pipes is two, and the two working corrugated pipes are respectively and fixedly connected with the two flanges; the middle pipe is arranged between the two working corrugated pipes, and a medium circulation channel is formed by the middle pipe, the two working corrugated pipes on two sides and the two flanges; the floating type balance structure comprises a corrugated pipe compensation part, two ends of the corrugated pipe compensation part are connected with two flanges in a floating mode through a transmission device and a floating part respectively, and a communicating pipe is communicated with the corrugated pipe compensation part and a medium circulation channel. The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure, the horizontal compensation ability of increase bellows expansion joint has reduced transverse rigidity, has still reduced expansion joint length, has alleviateed expansion joint weight, the cost is reduced.
Description
Technical Field
The utility model relates to an expansion joint technical field, in particular to straight tube pressure balance type bellows expansion joint with distributing type floating structure.
Background
The metal bellows expansion joint is one of the key components for performing thermal compensation on modern heated pipe networks and equipment, and has the functions of displacement compensation, vibration reduction, noise reduction and sealing. At present, the composite material is widely applied to equipment such as thermal pipelines, process tubing, machines, pumps, pressure vessels and the like in various industrial departments such as metallurgy, oil refining, petrochemical industry, electric power (thermal power, hydroelectric power and nuclear power), heat supply networks, ships, buildings, cement, space navigation, machinery and the like. However, due to the structural characteristics of the corrugated pipe, the corrugated pipe can generate pressure thrust to two ends of a connection part of the corrugated pipe, further act on equipment connected with the corrugated pipe, and damage the equipment in severe cases to cause serious consequences.
In order to prevent the pressure thrust generated by the unconstrained corrugated pipe expansion joint from acting on equipment and influencing the normal operation of the equipment, a straight pipe pressure balance type corrugated pipe expansion joint is usually selected for constraining the pressure thrust. The existing straight pipe pressure balance type expansion joint (as shown in fig. 1) is composed of two groups of working corrugated pipes 2A, a balance corrugated pipe 534 positioned in the middle, a pull rod 3A, a first end plate 5A, a second end plate 6A and other structural members, wherein the two first end plates 5A are respectively arranged on two sides of the balance corrugated pipe 534, and the two end plates 6A are respectively arranged on the two end pipes 1A and are mainly used for absorbing axial acting force and balancing pressure thrust of the corrugated pipe.
When the straight pipe pressure balance type corrugated pipe expansion joint with the conventional structure compensates the transverse displacement, three groups of corrugated pipes (two groups of working corrugated pipes 2A and one group of balance corrugated pipes 534) perform displacement distribution according to the rigidity proportion, the large transverse displacement compensation function of the compound corrugated pipe cannot be realized, the transverse displacement compensation capability is very limited within the limited length size range, the rigidity is large, and large acting force exists on the pipe orifice of equipment.
Chinese patent No. CN106090515A, a low-pressure high-temperature constrained expansion joint floating device previously disclosed by the applicant, includes end pipes and a corrugated pipe, the end pipes are connected to both ends of the corrugated pipe, the end pipes at both ends of the corrugated pipe are respectively sleeved with a floating assembly, the floating assembly is fixed by an outer limit stop, a radial floating limit cover plate, an inner limit stop and a circumferential floating limit stop arranged on the end pipes, and the floating assemblies at both ends of the corrugated pipe are connected by a plurality of sets of short hinge plates, auxiliary hinge plates, long hinge plates and pin shafts. This scheme is through the floating assembly structure of modified, makes end pipe and floating structure atress even, and local stress is low, but it still does not improve the less defect of bellows expansion joint compensation lateral displacement ability.
Therefore, given the compensation requirements of the pipeline, the expansion joint requires a longer installation size, which in some cases can lead to layout conflicts; on the premise that the allowable installation size of the pipe system is given, the expansion joint has higher rigidity, and the strength of a pipe system constraint structure or the strength of an equipment pipe orifice needs to be enhanced. Both of the above cases increase the construction cost, and the use condition is greatly restricted.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a straight tube pressure balance type bellows expansion joint with distributing type floating structure to solve the problem that conventional straight tube pressure balance type bellows expansion joint compensation lateral displacement ability is limited, rigidity is great, length is too big.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a straight pipe pressure balanced bellows expansion joint with distributed floating structure, comprising:
the number of the working corrugated pipes is two, and the two working corrugated pipes are respectively and fixedly connected with the two flanges;
the middle pipe is arranged between the two working corrugated pipes, and a medium circulation channel is formed by the middle pipe, the two working corrugated pipes on two sides and the two flanges;
the floating type balance structure comprises a corrugated pipe compensation part, one side of the corrugated pipe compensation part is in floating connection with one flange through a first transmission device and a first floating part, and the other side of the corrugated pipe compensation part is in floating connection with the other flange through a second transmission device and a second floating part;
and the communicating pipe is communicated with the corrugated pipe cavity of the corrugated pipe compensation part and the medium circulation channel.
Furthermore, the corrugated pipe compensation part comprises a balance corrugated pipe, a first sealing plate and a second sealing plate are arranged at two ends of the balance corrugated pipe respectively, the first transmission device and the second sealing plate are connected into a whole, and the second transmission device and the first sealing plate are connected into a whole.
Furthermore, the first floating part comprises a sliding plate and a bearing plate, the bearing plate is fixedly connected with the flange, a sliding groove is formed between the bearing plate and the flange, the sliding plate is arranged in the sliding groove and can slide relative to the bearing plate, and the sliding plate is connected with the first transmission device into a whole.
Furthermore, balls are arranged between the sliding plate and the flange and/or between the sliding plate and the force bearing plate, and a through hole is formed in the center of the side wall of the force bearing plate, which is far away from the flange.
Further, the second sealing plate is arranged at one end, close to the second floating portion, of the balance corrugated pipe, and the first sealing plate is arranged at one end, close to the first floating portion, of the balance corrugated pipe.
Furthermore, one end of the first transmission device connected with the sliding plate is fixed in a single connection point mode, and one end of the first transmission device connected with the second sealing plate is fixed in a multi-connection point mode; the end, connected with the sliding plate, of the second transmission device is fixed in a single connection point mode, and the end, connected with the first sealing plate, of the second transmission device is fixed in a multi-connection point mode.
Furthermore, one end of the first transmission device passes through a through hole in the center of the side wall of the bearing plate on the first floating part and is connected with the sliding plate, and the other end of the first transmission device passes through the first sealing plate and the balance corrugated pipe and then is connected with the excircle of the second sealing plate; one end of the second transmission device penetrates through a through hole in the center of the side wall of the bearing plate on the second floating part to be connected with the sliding plate, and the other end of the second transmission device penetrates through the second sealing plate and the balance corrugated pipe to be connected with the outer circle of the first sealing plate.
Furthermore, a plurality of floating type balance structures are arranged, and the total effective area of the balance corrugated pipes in the plurality of floating type balance structures is equal to the effective area of the working corrugated pipe.
Furthermore, two the plane that the flange is close to each other is the paralleling and sets up, and this plane is perpendicular with the expansion joint axis, and is a plurality of floating balanced structure evenly distributed is between two flanges, every floating balanced structure's both ends all are through bearing board and flange fixed connection.
Furthermore, one end of the communicating pipe penetrates through the first sealing plate or the second sealing plate and then is communicated with the cavity of the balance corrugated pipe, and the other end of the communicating pipe can penetrate through the middle pipe and/or the flange and then is communicated with the medium circulation channel.
Compared with the prior art, distributed floating structure's straight tube pressure balance type bellows expansion joint, have following advantage:
(1) The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure through becoming double entry free type structure with two sets of work bellows, has increased compensation lateral displacement ability, is the floating structure with the balanced structure design simultaneously, does not participate in transverse deformation, further reduces whole radial stiffness to can keep axial stiffness and conventional balanced structure to be equivalent.
(2) The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure, the horizontal compensation ability of increase bellows expansion joint has reduced transverse rigidity, has still reduced expansion joint length, has alleviateed expansion joint weight, the cost is reduced.
Drawings
The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:
FIG. 1 is a schematic structural diagram of a straight pipe pressure-balanced expansion joint in the prior art;
fig. 2 is a schematic structural diagram of a straight pipe pressure balance type bellows expansion joint with a distributed floating structure according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a floating type balance structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second straight pipe pressure balance type bellows expansion joint with a distributed floating structure according to an embodiment of the present invention;
description of the reference numerals:
the floating type corrugated pipe comprises an end pipe 1A, a pull rod 3A, a first end plate 5A, a second end plate 6A, a flange 1, a working corrugated pipe 2, a communicating pipe 3, a middle pipe 4, a floating type balance structure 5, a first floating part 51, a sliding plate 501, balls 502, a bearing plate 503, a sliding groove 504, a through hole 505, a first transmission device 52, a corrugated pipe compensation part 53, a first sealing plate 532, a second sealing plate 533, a balance corrugated pipe 534, a second transmission device 54 and a second floating part 55.
Detailed Description
In order to make the technical means and the objectives and functions of the present invention easy to understand, the embodiments of the present invention will be described in detail with reference to the specific drawings.
It should be noted that all terms used in the present invention for directional and positional indication, such as: the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "lower", "transverse", "longitudinal", "center", etc. are used only for explaining the relative positional relationship, connection conditions, etc. between the respective parts in a certain state (as shown in the drawings), and are only for convenience of describing the present invention, but not for the requirement that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Example 1
As shown in fig. 2-3, the utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure, include:
the number of the working corrugated pipes 2 is two, and the two working corrugated pipes 2 are respectively fixedly connected with the two flanges 1;
the middle pipe 4 is arranged between the two working corrugated pipes 2, and the middle pipe 4, the two working corrugated pipes 2 on two sides and the two flanges 1 form a medium circulation channel;
a floating balance structure 5, wherein the floating balance structure 5 comprises a bellows compensation part 53, the bellows compensation part 53 comprises a closed bellows cavity, one end of the bellows compensation part 53 is connected with a first floating part 51 through a first transmission device 52, the other end of the bellows compensation part 53 is connected with a second floating part 55 through a second transmission device 54, the first floating part 51 is connected with one of the flanges 1, the second floating part 55 is connected with one of the flanges 1, wherein the bellows compensation part 53 and the first transmission device 52 can transversely displace relative to the flange 1 through the first floating part 51, the bellows compensation part 53 and the second transmission device 54 can transversely displace relative to the flange 1 through the second floating part 55, and the effective area inside the bellows compensation part 53 is equal to the effective area in the working bellows 2;
and the communication pipe 3 is used for communicating the corrugated pipe cavity of the corrugated pipe compensation part 53 with the medium circulation channel through the communication pipe 3.
The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure, under operating condition, flange 1 and the pipe connection at expansion joint both ends, the inside medium that is P of pressure is full of in the expansion joint, and simultaneously, this medium is through communicating pipe 3 flow direction bellows compensation portion 53, the inside pressure of confined bellows cavity is also P on bellows compensation portion 53, and the effective area in with the inside cavity area of bellows compensation portion 53 and the work bellows 2 equals the setting, and at this moment, the pressure thrust that bellows compensation portion 53 both ends received equals, opposite direction with its pressure thrust size that receives through the flange 1 that first transmission 52 or second transmission 54 are connected, and the transmission of power is carried out through the unsteady transmission of first unsteady portion 51 or second unsteady portion 55 to realize the force balance. The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure is concerned with displacement compensation and is included axial displacement compensation and lateral displacement compensation under the atress is balanced. In the axial displacement compensation, all the bellows are compressed or stretched at the same time, and the sum of the displacement of the balance bellows 534 and the displacement of the two working bellows 2 is equal; regarding the lateral displacement compensation, the two groups of working bellows 2 and intermediate pipe 4 form a compound structure, and the lateral deformation of the compound structure compensates the lateral displacement according to a compound free expansion joint mode. At this time, the flanges 1 at the two ends of the floating type balance structure 5 move transversely relative to each other, through the floating transmission of the first floating part 51 or the second floating part 55, the structures fixedly connected with the flanges on the first floating part 51 and the second floating part 55 move transversely along with the flanges, the positions of the other structures are unchanged, namely the first transmission device 52, the second transmission device 54 and the balance corrugated pipe 534 do not participate in transverse deformation, and the pipeline is only subjected to the transverse rigidity generated by the two groups of working corrugated pipes 2 according to a free structure.
The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure through becoming double entry free type structure with two sets of work bellows 2, has increased compensation lateral displacement ability, is the floating structure with the balanced structure design simultaneously, does not participate in transverse deformation, further reduces whole radial stiffness to can keep axial stiffness to match with conventional balanced structure.
As a preferred example of the present invention, the first floating portion 51 includes a sliding plate 501 and a force-bearing plate 503, the force-bearing plate 503 is fixedly connected to the flange 1, the force-bearing plate 503 and the flange 1 form a sliding slot 504 therebetween, the sliding plate 501 is disposed inside the sliding slot 504 and can slide relatively to the force-bearing plate 503, and the sliding plate 501 and the first transmission device 52 are connected into a whole.
The arrangement discloses a concrete structure of the first floating part 51, and the bearing plate 503 is fixedly connected with the flange 1, so that the bearing plate 503 can move transversely with the flange 1 integrally, and the sliding plate 501, the first transmission device 52 and the corrugated pipe compensation part 53 do not move transversely, so that the expansion joint can increase and compensate the transverse displacement capacity, and the corrugated pipe compensation part 53 does not participate in transverse deformation, thereby reducing the overall radial rigidity.
As a preferable example of the present invention, the second floating portion 55 and the first floating portion 51 are provided in the same structure, and the second floating portion 55 and the first floating portion 51 are provided symmetrically along the radial center plane of the bellows compensation portion 53.
The structure is simple, the processing and the manufacturing are easy, the die sinking cost of parts is reduced, and the construction cost is reduced.
As a preferred example of the present invention, a ball 502 is disposed between the sliding plate 501 and the flange 1 and/or between the sliding plate 501 and the bearing plate 503, and a through hole 505 is formed in the center of the sidewall of the bearing plate 503 away from the flange 1. Preferably, the inner surface of the upper wall and/or the lower wall of the bearing plate 503 forming the sliding groove 504 is a plane, and the plane is perpendicular to the side surface of the flange 1; the inner surface of the side wall of the force bearing plate 503 is also a plane, the plane is parallel to the side surface of the flange 1, a limiting part for limiting the rolling of the ball 502 is arranged between the sliding plate 501 and the flange 1, and/or a limiting part for limiting the rolling of the ball 502 is arranged between the sliding plate 501 and the side wall of the force bearing plate 503 far away from the flange 1, the limiting part can be a limiting groove or a limiting boss, and can also be other limiting structures for realizing the rolling limiting of the ball, so that the reliability of the rolling movement of the ball when the force bearing plate 503 moves transversely with the flange as a whole.
This setting makes ball 502 can free rotation and roll at certain extent, and sliding plate 501 can pass through ball 502 free slip in spout 504, has further improved straight tube pressure balance type bellows expansion joint with distributing type floating structure carries out displacement compensation's reliability in the transverse direction.
As a preferred example of the present invention, the bellows compensation portion 53 includes a balanced bellows 534, a first closing plate 532 and a second closing plate 533, the first closing plate 532 and the second closing plate 533 are respectively sealed at two ends of the balanced bellows 534, wherein one end of the first transmission device 52 passes through the through hole 505 at the center of the sidewall of the bearing plate 503 on the first floating portion 51 to be connected to the sliding plate 501, and the other end passes through the first closing plate 532 and the balanced bellows 534 to be connected to the second closing plate 533; one end of the second transmission device 54 passes through the through hole 505 at the center of the sidewall of the bearing plate 503 on the second floating portion 55 to connect with the sliding plate 501, and the other end passes through the second closing plate 533 and the balance bellows 534 to connect with the first closing plate 532.
The arrangement is a bifurcated structure design with the first transmission device 52 and the second transmission device 54, one end is fixed by a single connection point, preferably connected to the center of the sliding plate 501, and the other end is fixed by multiple connection points, so that the sliding plate can be bent in the radial direction at a proper position, and when the sliding plate crosses the balance bellows 534 and is fixed to the outer circle of the sealing plate far away from the single connection point, the sliding plate 501 is fixed to the outer circle of the sealing plate at multiple points.
As a preferred example of the present invention, a plurality of floating balance structures 5 are provided, and the total effective area of the balance bellows 534 in the plurality of floating balance structures 5 is equal to the effective area in the working bellows 2. As an example of the present invention, the effective area of the bellows is Ae = (pi × Dm)/4, where Dm is the average diameter of the bellows.
Namely that
N*A p ＝A g
In the formula
N-number of floating balance structures;
A p the effective area of the single balance bellows 534;
A g the effective area of the working bellows 2.
The arrangement further satisfies the stress balance between the action of the expansion joint and the pressure thrust of the flange 1 connected with the working corrugated pipes 2 and the pressure thrust of the pressure thrust on the sealing plates, and ensures that the two groups of working corrugated pipes perform transverse displacement compensation and axial displacement compensation under the compound free structure.
As a preferred example of the present invention, two planes that the flanges 1 are close to each other are arranged in parallel, and the planes are perpendicular to the expansion joint axis, and are multiple the floating type balance structure 5 is uniformly distributed between the two flanges 1, each of both ends of the floating type balance structure 5 is fixedly connected with the flange 1 through the bearing plate 503.
As a preferred example of the present invention, one end of the communicating tube 3 is communicated with the cavity of the balance corrugated tube 534, and the other end can be communicated with the medium circulation channel after passing through the middle tube 4 and/or the flange 1.
As an example of the present invention, as shown in fig. 2, two sets of working bellows 2 respectively constitute the medium circulation channel with the middle tube 4, the flange 1 welded connection, and a plurality of connecting holes have been seted up at the middle tube 4 lateral wall, and the relative one side of both ends flange 1 is parallel to each other, and perpendicular with the expansion joint axis, and a plurality of floating balance structure 5 evenly distributed are connected through the load board 503 and the relative side of both ends flange 1 between the both ends flange 1. The plurality of communicating pipes 3 are respectively connected with the side wall connecting holes of the intermediate pipe 4 and the communicating holes on the first closing plate 532 (or the second closing plate 533) in a sealing manner, and the communicating pipes 3 are flexible pressure-bearing hollow pipes and form a communicating channel between the inner cavity of the corrugated pipe compensating portion 53 and the medium circulating channel. As shown in fig. 4, a plurality of connection holes may be formed in a side wall of at least one of the flanges 1, and the plurality of communication pipes 3 may be hermetically connected to the connection holes of the flanges 1 and the communication holes of the first sealing plate 532 (or the second sealing plate 533).
The utility model discloses a straight tube pressure balance type bellows expansion joint with distributing type floating structure, the horizontal compensation ability of increase bellows expansion joint has reduced transverse rigidity, has still reduced expansion joint length, has alleviateed expansion joint weight, the cost is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a straight tube pressure balance type bellows expansion joint with distributing type floating structure which characterized in that includes:
the two working corrugated pipes (2) are arranged, and the two working corrugated pipes (2) are respectively and fixedly connected with the two flanges (1);
the middle pipe (4) is arranged between the two working corrugated pipes (2), and the middle pipe (4), the two working corrugated pipes (2) on two sides and the two flanges (1) form a medium circulation channel;
the floating type balance structure (5) comprises a corrugated pipe compensation part (53), one side of the corrugated pipe compensation part (53) is in floating connection with one flange (1) through a first transmission device (52) and a first floating part (51), and the other side of the corrugated pipe compensation part (53) is in floating connection with the other flange (1) through a second transmission device (54) and a second floating part (55);
and the communication pipe (3) is communicated with the corrugated pipe cavity of the corrugated pipe compensation part (53) and the medium circulation channel.
2. The straight pipe pressure balanced type bellows expansion joint of a distributed floating structure according to claim 1, wherein the bellows compensation portion (53) comprises a balance bellows (534), a first sealing plate (532) and a second sealing plate (533) are respectively disposed at both ends of the balance bellows (534), the first transmission device (52) and the second sealing plate (533) are integrally connected, and the second transmission device (54) and the first sealing plate (532) are integrally connected.
3. The straight pipe pressure balance type bellows expansion joint of the distributed floating structure according to claim 2, wherein the first floating portion (51) comprises a sliding plate (501) and a bearing plate (503), the bearing plate (503) is fixedly connected with the flange (1), a sliding slot (504) is formed between the bearing plate (503) and the flange (1), the sliding plate (501) is arranged in the sliding slot (504) and can slide relative to the bearing plate (503), and the sliding plate (501) is connected with the first transmission device (52) into a whole.
4. The straight pipe pressure balance type bellows expansion joint of a distributed floating structure according to claim 3, wherein a ball (502) is arranged between the sliding plate (501) and the flange (1) and/or between the sliding plate (501) and the bearing plate (503), and a through hole (505) is formed in the center of the side wall of the bearing plate (503) far away from the flange (1).
5. The straight pipe pressure balanced type bellows expansion joint of a distributed floating structure according to claim 4, wherein the second seal plate (533) is provided at an end of the balance bellows (534) close to the second floating portion (55), and the first seal plate (532) is provided at an end of the balance bellows (534) close to the first floating portion (51).
6. The straight pipe pressure balanced bellows expansion joint of a distributed floating structure according to claim 5, wherein the end of the first actuator (52) connected to the sliding plate (501) is fixed at a single connection point, and the end of the first actuator (52) connected to the second closing plate (533) is fixed at multiple connection points; the end, connected with the sliding plate (501), of the second transmission device (54) is fixed in a single connection point mode, and the end, connected with the first sealing plate (532), of the second transmission device (54) is fixed in a multi-connection point mode.
7. The straight pipe pressure balance type bellows expansion joint of the distributed floating structure according to claim 6, wherein one end of the first transmission device (52) passes through a through hole (505) at the center of the side wall of the bearing plate (503) on the first floating part (51) and is connected with the sliding plate (501), and the other end passes through the first closing plate (532) and the balance bellows (534) and is connected with the outer circle of the second closing plate (533); one end of the second transmission device (54) passes through a through hole (505) in the center of the side wall of the bearing plate (503) on the second floating part (55) and is connected with the sliding plate (501), and the other end of the second transmission device passes through the second sealing plate (533) and the balance corrugated pipe (534) and then is connected with the excircle of the first sealing plate (532).
8. The straight pipe pressure balanced type bellows expansion joint of a distributed floating structure according to any one of claims 1 to 7, wherein a plurality of the floating type balance structures (5) are provided, and the total effective area of the balance bellows (534) in the plurality of the floating type balance structures (5) is equal to the effective area in the working bellows (2).
9. The straight pipe pressure balance type bellows expansion joint of a distributed floating structure according to claim 8, wherein the planes of the two flanges (1) close to each other are arranged in parallel and perpendicular to the expansion joint axis, a plurality of floating balance structures (5) are uniformly distributed between the two flanges (1), and both ends of each floating balance structure (5) are fixedly connected with the flanges (1) through bearing plates (503).
10. The straight pipe pressure balance type bellows expansion joint of the distributed floating structure according to claim 1, wherein one end of the communicating pipe (3) passes through the first closing plate (532) or the second closing plate (533) and then communicates with the cavity of the balance bellows (534), and the other end thereof can pass through the intermediate pipe (4) and/or the flange (1) and then communicates with the medium circulation channel.
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| CN202221367060.3U CN217603622U (en) | 2022-06-01 | 2022-06-01 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
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| CN202221367060.3U CN217603622U (en) | 2022-06-01 | 2022-06-01 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046065A (en) * | 2022-06-01 | 2022-09-13 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046065A (en) * | 2022-06-01 | 2022-09-13 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
| CN115046065B (en) * | 2022-06-01 | 2024-01-19 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type corrugated pipe expansion joint with distributed floating structure |
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