WO2021093571A1 - Tripod-type three-dimensional expansion joint - Google Patents

Tripod-type three-dimensional expansion joint Download PDF

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Publication number
WO2021093571A1
WO2021093571A1 PCT/CN2020/123930 CN2020123930W WO2021093571A1 WO 2021093571 A1 WO2021093571 A1 WO 2021093571A1 CN 2020123930 W CN2020123930 W CN 2020123930W WO 2021093571 A1 WO2021093571 A1 WO 2021093571A1
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WO
WIPO (PCT)
Prior art keywords
connecting flange
tube
spring
expansion joint
telescopic tube
Prior art date
Application number
PCT/CN2020/123930
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French (fr)
Chinese (zh)
Inventor
王珂
王鹏程
张海伟
李丽锋
姜平
赵保国
刘立宇
郭曾旭
单霄飞
Original Assignee
山西河坡发电有限责任公司
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Publication of WO2021093571A1 publication Critical patent/WO2021093571A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/70—Cooling of pipes or pipe systems

Definitions

  • the invention relates to the technical field of process pipelines, in particular to a tripod three-dimensional expansion joint.
  • the medium in the process pipeline often has a temperature difference. Due to the characteristics of thermal expansion and contraction of the pipeline itself, when the temperature difference occurs, the length of the pipeline will expand and contract, in order to compensate for the temperature difference of the pipeline. The resulting expansion and contraction requires the installation of corresponding compensation pipes in the pipeline.
  • Existing pipeline compensation devices are usually realized by using bellows expansion joints. Although general corrugated expansion joint devices can meet the requirements of three-dimensional expansion through corrugated expansion and contraction in principle, they have obvious defects. First, the amount of expansion depends entirely on the compensation of expansion waves. Therefore, the installation height is very high, and it is difficult to arrange the equipment on-site.
  • the second is that the expansion joint has high temperature and it is difficult to cool the expansion wave, which makes the expansion joints generally have hidden dangers of thermal pollution and labor safety; the existing technology can also be used.
  • the telescopic compensation tube solves the problem of thermal expansion and contraction of the tube, but the telescopic compensation tube can only achieve expansion and contraction compensation in the axial direction, and cannot solve the compensation problem in the radial direction, and cannot form a three-dimensional compensation measure.
  • the tripod three-dimensional expansion joint of the present invention is designed.
  • the technical problem to be solved by the present invention is to provide a tripod-type three-dimensional expansion joint to realize axial and radial three-dimensional compensation in the process of thermal expansion and contraction of pipelines, as well as the problem of the spatial layout of the compensation device and the problem of high temperature cooling of the compensation device .
  • a tripod type three-dimensional expansion joint comprising a first connecting flange, a second connecting flange connected to the first connecting flange through a spring structure, fixedly connected to the first connecting flange and passing through the first connecting flange
  • the outer wall of the first connecting flange, the second connecting flange, the telescopic tube packing box, and the accommodating tube are all provided with cooling coils.
  • the second connecting flange and the cooling coil on the telescopic tube packing box are in communication with each other.
  • the cooling coil on the accommodating tube is spirally arranged around the accommodating tube, or arranged on the accommodating tube in an S-shape.
  • At least three groups of the spring structure are evenly distributed between the first connecting flange and the second connecting flange.
  • the spring structure includes a first spring sleeve fixed on the first connecting flange, a second spring sleeve fixed on the second connecting flange, and the first spring Sleeve and the spring in the second spring sleeve; wherein the inner diameter of the first spring sleeve is larger than the outer diameter of the second spring sleeve, or the outer diameter of the first spring sleeve is smaller than the The inner diameter of the second spring sleeve.
  • first spring sleeve is further provided with an internal thread, and the internal thread is equipped with an adjusting screw for adjusting the compression strength of the spring.
  • a limit platform is provided at one end of the accommodating tube connected with the second connecting flange, the radial sealing packing is sleeved on the limit platform, and the radial sealing packing The thickness is greater than the height of the limit platform.
  • the present invention has the following beneficial effects:
  • the expansion tube can expand and contract along the axial direction under the sealing action of the expansion tube sealing packing when the pipeline expands and contracts, so as to achieve axial expansion.
  • the pipeline has a radial displacement
  • the spring structure transfers the elastic force to the second connecting flange through the support of the first connecting flange, so that the second connecting flange always keeps a squeeze against the radial sealing packing.
  • the pressure force realizes the sealing, thereby realizing the compensation in the radial direction.
  • the tripod three-dimensional expansion joint of the present invention realizes the three-dimensional compensation in the radial direction and the axial direction of the pipeline, which greatly improves the compensation effect of the pipeline.
  • cooling coils are provided on the outer wall of the first connecting flange, the second connecting flange, the telescopic tube packing box, and the accommodating tube.
  • the cooling water is passed through to realize the temperature cooling of the expansion joint of the present invention, which greatly guarantees the service life of each component of the expansion joint and the effect of compensation and sealing.
  • the spring structure in the present invention is provided with an adjusting screw, and the position of the adjusting screw in the first spring sleeve is adjusted by the adjusting screw, so as to realize the adjustment of the compression elasticity of the spring, thereby improving the rationality of the use of the present invention.
  • Figure 1 is a schematic cross-sectional view of the structure of the present invention.
  • Figure 2 is a schematic diagram of the structure of the present invention.
  • a tripod-type three-dimensional expansion joint includes a telescopic tube structure part and a accommodating tube structure part.
  • the telescopic tube structure can be inserted into the accommodating tube structure.
  • the inner diameter of the accommodating tube structure is larger than the outer diameter of the telescopic tube structure.
  • the accommodating tube structure generates displacement in the axial and radial directions, so as to realize the three-dimensional compensation in the radial and axial directions of the pipeline.
  • the telescopic tube structure includes a telescopic tube 3, one end of the telescopic tube 3 is fixedly connected with a first connecting flange 1, the first connecting flange 1 is used to connect to the pipeline that needs compensation; the first connecting flange 1
  • the second connecting flange 2 is connected through a plurality of spring structures. In order to ensure the stability of the connecting force of the first connecting flange 1 and the second connecting flange 2, there are at least three sets of spring structures, and they are evenly distributed. .
  • the spring structure can be arranged in a variety of ways, as long as the compression force of the spring can be ensured between the first connecting flange and the second connecting flange; preferably, the specific components of the spring structure include fixing to the first connecting flange
  • the inner diameter and outer diameter of the first spring sleeve 10 and the second spring sleeve 11 are different, and they need to be inserted into each other.
  • the specific method can be that the inner diameter of the first spring sleeve 10 is larger than that of the second spring sleeve.
  • the outer diameter of the spring sleeve 11 or the outer diameter of the first spring sleeve 10 is smaller than the inner diameter of the second spring sleeve 11.
  • the arrangement of the spring sleeve can ensure that the spring has a relatively stable compression force in the spring sleeve to improve the stability of the elastic force.
  • the two spring sleeves are set in a way that can enter each other, which can further enhance the spring. The range of compression.
  • an internal thread can be provided on the inner wall of the first spring sleeve 10, and an adjustment screw can be arranged.
  • the adjustment of the force is used to adjust the expansion and contraction of different pipelines.
  • a telescopic tube packing box 4 is provided on the second connecting flange 2, and the telescopic tube packing box 4 is provided with a telescopic tube sealing packing 5, and the telescopic tube
  • the squeezing between the packing 5 and the telescopic tube 3 realizes the sealing between the two.
  • the accommodating tube structure includes a radial sealing packing 7 for sealing with the second connecting flange 2, an accommodating tube 6 for accommodating the telescopic tube 3 for its telescopic movement space, and an accommodating tube 6 arranged at one end of the accommodating tube 6
  • the third connecting flange 8 and the third connecting flange 8 are used to connect the pipeline that needs compensation.
  • the inner diameter of the accommodating tube 6 is larger than The outer diameter of the telescopic tube 3, and ensure that there is a large enough gap between the two to ensure sufficient radial displacement; at the same time, in order to limit the radial sealing packing 7 to avoid random sliding of the radial sealing packing, A limit stand 12 is provided at the end where the accommodating tube 6 and the second connecting flange 2 are connected.
  • the radial seal packing 7 is sleeved on the limit stand 12, and the thickness of the radial seal packing 7 is greater than the limit stand
  • the height of the radial seal packing 7 passes the limit of the limit table 12, which ensures that the limit packing is restricted to a fixed position and avoids the random sliding of the radial seal packing.
  • the limit table can also be set in the form of a limit groove, and the radial seal packing can be placed in the limit groove to achieve the limit of the radial seal packing.
  • Cooling coils 9 are provided on the outer wall, and each cooling coil is provided with water inlets and water outlets.
  • the circulating water supply of the circulating pipeline is used to realize the expansion joint The cooling of each part improves its service life.
  • the second connecting flange 2 and the cooling coil 9 on the telescopic tube packing box 4 can be connected to each other, so that the two function as a water inlet and a water outlet.
  • the cooling coil on the accommodating tube 6 can be arranged in a variety of ways, such as a spiral arrangement surrounding the accommodating tube 6 or an S-shaped arrangement close to the accommodating tube 6.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)

Abstract

A tripod-type three-dimensional expansion joint, comprising a first connecting flange (1), a second connecting flange (2) connected to the first connecting flange (1) by means of spring structures, a telescopic tube (3) fixedly connected to the first connecting flange (1) and passing through the second connecting flange (2), a telescopic tube packing box (4) provided on the second connecting flange (2), a telescopic tube sealing packing (5) provided in the telescopic tube packing box (4), and an accommodating tube (6) connected to the second connecting flange (2); one end of the accommodating tube (6) connected to the second connecting flange (2) is provided with a radial sealing packing(7), and the other end thereof is provided with a third connecting flange (8) externally connected to a pipeline, and the inner diameter of the accommodating tube (6) is greater than the outer diameter of the telescopic tube (3). When the three-dimensional expansion joint is mounted in the pipeline, the three-dimensional compensation of the pipeline in a radial direction and an axial direction can be realized by means of both the telescopic movement of the telescopic tube (3) in the axial direction and the radial displacement of the telescopic tube (3) in the accommodating tube (6), thereby greatly improving the compensation effect of the pipeline.

Description

一种鼎式三维膨胀节Ding type three-dimensional expansion joint 技术领域Technical field
本发明涉及工艺管线技术领域，具体涉及一种鼎式三维膨胀节。The invention relates to the technical field of process pipelines, in particular to a tripod three-dimensional expansion joint.
背景技术Background technique
在工艺管线的运行过程中，工艺管线内的介质经常会出现温差，由于管线本身热胀冷缩的特性，在出现温差的时候，管线就会出现长度的伸缩，为了补偿管线在出现温差时所造成的伸缩，就需要在管线中安装相应的补偿管。现有的管线补偿装置中通常采用波纹管膨胀节来实现，通用波纹膨胀节装置虽然从原理上能通过波纹伸缩同时满足三维膨胀需求，但缺陷明显，一是膨胀量完全依赖于膨胀波的补偿量完成，所以安装高度很高，设备现场布置难度大；二是膨胀节温度高，又难以进行膨胀波的冷却，使膨胀节普遍存在热污染隐患和劳动安全隐患；现有技术中也有采用可伸缩的补偿管来解决该管热胀冷缩的问题，但可伸缩的补偿管又只能实现轴向上的伸缩补偿，不能解决径向上的补偿问题，不能形成三维的补偿措施。为解决布置空间和膨胀节温度问题，兹设计本发明的鼎式三维膨胀节。During the operation of the process pipeline, the medium in the process pipeline often has a temperature difference. Due to the characteristics of thermal expansion and contraction of the pipeline itself, when the temperature difference occurs, the length of the pipeline will expand and contract, in order to compensate for the temperature difference of the pipeline. The resulting expansion and contraction requires the installation of corresponding compensation pipes in the pipeline. Existing pipeline compensation devices are usually realized by using bellows expansion joints. Although general corrugated expansion joint devices can meet the requirements of three-dimensional expansion through corrugated expansion and contraction in principle, they have obvious defects. First, the amount of expansion depends entirely on the compensation of expansion waves. Therefore, the installation height is very high, and it is difficult to arrange the equipment on-site. The second is that the expansion joint has high temperature and it is difficult to cool the expansion wave, which makes the expansion joints generally have hidden dangers of thermal pollution and labor safety; the existing technology can also be used. The telescopic compensation tube solves the problem of thermal expansion and contraction of the tube, but the telescopic compensation tube can only achieve expansion and contraction compensation in the axial direction, and cannot solve the compensation problem in the radial direction, and cannot form a three-dimensional compensation measure. In order to solve the problems of layout space and expansion joint temperature, the tripod three-dimensional expansion joint of the present invention is designed.
发明内容Summary of the invention
本发明要解决的技术问题是：提供一种鼎式三维膨胀节，实现管线热胀冷缩过程中的轴向和径向上的三维补偿，以及补偿装置空间布局的问题和补偿装置高温降温的问题。The technical problem to be solved by the present invention is to provide a tripod-type three-dimensional expansion joint to realize axial and radial three-dimensional compensation in the process of thermal expansion and contraction of pipelines, as well as the problem of the spatial layout of the compensation device and the problem of high temperature cooling of the compensation device .
为实现上述目的，本发明采用的技术方案如下：In order to achieve the above objectives, the technical solutions adopted by the present invention are as follows:
一种鼎式三维膨胀节，包括第一连接法兰，通过弹簧结构与所述第一连接法兰相连的第二连接法兰，与所述第一连接法兰固定相连并穿过所述第二连接 法兰的伸缩管，设置于所述第二连接法兰上的伸缩管盘根盒，设置于所述伸缩管盘根盒内的伸缩管密封盘根，以及与所述第二连接法兰相接的容置管；其中，所述容置管与所述第二连接法兰相接的一端设有径向密封盘根，另一端设有外接管线的第三连接法兰，所述容置管的内径大于所述伸缩管的外径。A tripod type three-dimensional expansion joint, comprising a first connecting flange, a second connecting flange connected to the first connecting flange through a spring structure, fixedly connected to the first connecting flange and passing through the first connecting flange A telescopic tube with two connecting flanges, a telescopic tube packing box arranged on the second connecting flange, a telescopic tube sealing packing arranged in the telescopic tube packing box, and the second connection method The accommodating pipe connected to the flange; wherein, one end of the accommodating pipe connected with the second connecting flange is provided with a radial sealing packing, and the other end is provided with a third connecting flange for an external pipeline, the The inner diameter of the accommodating tube is larger than the outer diameter of the telescopic tube.
进一步地，所述第一连接法兰、所述第二连接法兰、所述伸缩管盘根盒、以及所述容置管的外壁上均设有冷却盘管。Further, the outer wall of the first connecting flange, the second connecting flange, the telescopic tube packing box, and the accommodating tube are all provided with cooling coils.
进一步地，所述第二连接法兰和所述伸缩管盘根盒上的冷却盘管相互连通。Further, the second connecting flange and the cooling coil on the telescopic tube packing box are in communication with each other.
进一步地，所述容置管上的冷却盘管为环绕所述容置管呈螺旋式设置，或者呈S型设置于所述容置管上。Further, the cooling coil on the accommodating tube is spirally arranged around the accommodating tube, or arranged on the accommodating tube in an S-shape.
进一步地，所述弹簧结构在所述第一连接法兰和所述第二连接法兰之间均匀分布设有至少三组。Further, at least three groups of the spring structure are evenly distributed between the first connecting flange and the second connecting flange.
具体地，所述弹簧结构包括固定于所述第一连接法兰上的第一弹簧套筒，固定于所述第二连接法兰上的第二弹簧套筒，以及设置于所述第一弹簧套筒和所述第二弹簧套筒内的弹簧；其中，所述第一弹簧套筒的内径大于所述第二弹簧套筒的外径，或者所述第一弹簧套筒的外径小于所述第二弹簧套筒的内径。Specifically, the spring structure includes a first spring sleeve fixed on the first connecting flange, a second spring sleeve fixed on the second connecting flange, and the first spring Sleeve and the spring in the second spring sleeve; wherein the inner diameter of the first spring sleeve is larger than the outer diameter of the second spring sleeve, or the outer diameter of the first spring sleeve is smaller than the The inner diameter of the second spring sleeve.
进一步地，所述第一弹簧套筒内还设有内螺纹，且所述内螺纹配设有用于调节所述弹簧压缩强度的调节螺杆。Further, the first spring sleeve is further provided with an internal thread, and the internal thread is equipped with an adjusting screw for adjusting the compression strength of the spring.
进一步地，所述容置管与所述第二连接法兰相接的一端设有限位台，所述径向密封盘根套设在所述限位台上，且所述径向密封盘根的厚度大于所述限位台的高度。Further, a limit platform is provided at one end of the accommodating tube connected with the second connecting flange, the radial sealing packing is sleeved on the limit platform, and the radial sealing packing The thickness is greater than the height of the limit platform.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明的鼎式三维膨胀节在安装在管线中时，在管线热胀冷缩时，伸缩管可在伸缩管密封盘根的密封作用下沿着轴向伸缩，实现轴向上的伸缩补偿， 同时，在管线出现了径向上的位移后，由于伸缩管的小于容置管的内径，在径向力的作用下，伸缩管与容置管之间产生相对的位移，同时，径向密封盘根的设置和弹簧结构的设置，弹簧结构通过第一连接法兰的支撑将弹性作用力传递至第二连接法兰，使第二连接法兰一直与径向密封盘根保持一个挤压作用力，实现密封，从而实现径向上的补偿，本发明的鼎式三维膨胀节实现了管线径向和轴向上的三维补偿，大大的提升了管线的补偿效果。(1) When the tripod-type three-dimensional expansion joint of the present invention is installed in a pipeline, the expansion tube can expand and contract along the axial direction under the sealing action of the expansion tube sealing packing when the pipeline expands and contracts, so as to achieve axial expansion. At the same time, after the pipeline has a radial displacement, since the inner diameter of the telescopic tube is smaller than the inner diameter of the accommodating tube, under the action of the radial force, a relative displacement occurs between the telescopic tube and the accommodating tube. At the same time, the diameter To the setting of the sealing packing and the setting of the spring structure, the spring structure transfers the elastic force to the second connecting flange through the support of the first connecting flange, so that the second connecting flange always keeps a squeeze against the radial sealing packing. The pressure force realizes the sealing, thereby realizing the compensation in the radial direction. The tripod three-dimensional expansion joint of the present invention realizes the three-dimensional compensation in the radial direction and the axial direction of the pipeline, which greatly improves the compensation effect of the pipeline.
(2)本发明在第一连接法兰、第二连接法兰、伸缩管盘根盒、以及容置管的外壁上均设有冷却盘管，通过将冷却盘管外接循环管线，通过在管线中通冷却水的方式，实现对本发明膨胀节的温度冷却，极大的保证了膨胀节各部件的使用寿命以及补偿密封的效果。(2) In the present invention, cooling coils are provided on the outer wall of the first connecting flange, the second connecting flange, the telescopic tube packing box, and the accommodating tube. The cooling water is passed through to realize the temperature cooling of the expansion joint of the present invention, which greatly guarantees the service life of each component of the expansion joint and the effect of compensation and sealing.
(3)本发明中的弹簧结构设有调节螺杆，通过调节螺杆调节其在第一弹簧套筒内的位置，从而实现弹簧的压缩弹性的调节，从而提升了本发明使用的合理性。(3) The spring structure in the present invention is provided with an adjusting screw, and the position of the adjusting screw in the first spring sleeve is adjusted by the adjusting screw, so as to realize the adjustment of the compression elasticity of the spring, thereby improving the rationality of the use of the present invention.
附图说明Description of the drawings
图1为本发明结构剖面示意图。Figure 1 is a schematic cross-sectional view of the structure of the present invention.
图2为本发明结构示意图。Figure 2 is a schematic diagram of the structure of the present invention.
其中，附图标记对应的名称为：Among them, the names corresponding to the reference signs are:
1-第一连接法兰，2-第二连接法兰，3-伸缩管，4-伸缩管盘根盒，5-伸缩管密封盘根，6-容置管，7-径向密封盘根，8-第三连接法兰，9-冷却盘管，10-第一弹簧套筒，11-第二弹簧套筒，12-弹簧。1-first connecting flange, 2-second connecting flange, 3- telescopic tube, 4- telescopic tube packing box, 5- telescopic tube sealing packing, 6-accommodating tube, 7-radial sealing packing , 8-third connecting flange, 9-cooling coil, 10-first spring sleeve, 11-second spring sleeve, 12-spring.
具体实施方式Detailed ways
下面结合附图说明和实施例对本发明作进一步说明，本发明的方式包括但不仅限于以下实施例。The present invention will be further described below in conjunction with the description of the drawings and the embodiments. The manner of the present invention includes but is not limited to the following embodiments.
如图1～2所示：As shown in Figure 1-2:
一种鼎式三维膨胀节，包括伸缩管结构部分和容置管结构部分，伸缩管结构可插入容置管结构中，容置管结构的内径大于伸缩管结构的外径，伸缩管结构可在容置管结构轴向和径向两个方向上产生位移移动，从而实现管线径向和轴向上的三维补偿。其具体结构为：伸缩管结构包括伸缩管3，伸缩管3的一端固定连接有第一连接法兰1，第一连接法兰1用于与需要补偿的管线相连接；第一连接法兰1通过多个弹簧结构连接有第二连接法兰2，为了保证第一连接法兰1和第二连接法兰2支架连接作用力的稳定性，弹簧结构至少设有三组，且呈均匀分布的方式。弹簧结构可以有多种的设置方式，只要能保证第一连接法兰和第二连接法兰之间有弹簧的压缩作用力就行；优选地，弹簧结构的具体部件包括固定于第一连接法兰1上的第一弹簧套筒10，固定于第二连接法兰2上的第二弹簧套筒11，以及设置于第一弹簧套筒10和第二弹簧套筒11内的弹簧12；其中，第一弹簧套筒10和第二弹簧套筒11的内径和外径大小不同，需要满足两者之间可以相互插接进入，其具体的方式可以是第一弹簧套筒10的内径大于第二弹簧套筒11的外径，或者第一弹簧套筒10的外径小于第二弹簧套筒11的内径。弹簧套筒的设置可以保证弹簧在其弹簧套筒内有相对比较稳定的压缩弹力，用以提高弹性力的作用稳定性，同时两个弹簧套筒设置成可以相互进入的方式，可以进一步提升弹簧压缩的范围。同时，为了再次提升弹簧的弹力调节范围，可以在第一弹簧套筒10内壁设置内螺纹，并配设调节螺杆，通过设置调节螺杆在第一弹簧套筒10内的不同位置，实现弹簧压缩作用力大小的调节，用于调节管线不同的伸缩膨胀大小。A tripod-type three-dimensional expansion joint includes a telescopic tube structure part and a accommodating tube structure part. The telescopic tube structure can be inserted into the accommodating tube structure. The inner diameter of the accommodating tube structure is larger than the outer diameter of the telescopic tube structure. The accommodating tube structure generates displacement in the axial and radial directions, so as to realize the three-dimensional compensation in the radial and axial directions of the pipeline. The specific structure is: the telescopic tube structure includes a telescopic tube 3, one end of the telescopic tube 3 is fixedly connected with a first connecting flange 1, the first connecting flange 1 is used to connect to the pipeline that needs compensation; the first connecting flange 1 The second connecting flange 2 is connected through a plurality of spring structures. In order to ensure the stability of the connecting force of the first connecting flange 1 and the second connecting flange 2, there are at least three sets of spring structures, and they are evenly distributed. . The spring structure can be arranged in a variety of ways, as long as the compression force of the spring can be ensured between the first connecting flange and the second connecting flange; preferably, the specific components of the spring structure include fixing to the first connecting flange The first spring sleeve 10 on 1, the second spring sleeve 11 fixed on the second connecting flange 2, and the spring 12 arranged in the first spring sleeve 10 and the second spring sleeve 11; among them, The inner diameter and outer diameter of the first spring sleeve 10 and the second spring sleeve 11 are different, and they need to be inserted into each other. The specific method can be that the inner diameter of the first spring sleeve 10 is larger than that of the second spring sleeve. The outer diameter of the spring sleeve 11 or the outer diameter of the first spring sleeve 10 is smaller than the inner diameter of the second spring sleeve 11. The arrangement of the spring sleeve can ensure that the spring has a relatively stable compression force in the spring sleeve to improve the stability of the elastic force. At the same time, the two spring sleeves are set in a way that can enter each other, which can further enhance the spring. The range of compression. At the same time, in order to increase the adjustment range of the elastic force of the spring again, an internal thread can be provided on the inner wall of the first spring sleeve 10, and an adjustment screw can be arranged. By setting the adjustment screw at different positions in the first spring sleeve 10, the spring compression effect can be realized. The adjustment of the force is used to adjust the expansion and contraction of different pipelines.
为了实现伸缩管3与第二连接法兰2之间的密封，在第二连接法兰2上设置伸缩管盘根盒4，伸缩管盘根盒4内设置伸缩管密封盘根5，伸缩管盘根5与 伸缩管3之间的挤压，实现两者之间的密封。In order to achieve the seal between the telescopic tube 3 and the second connecting flange 2, a telescopic tube packing box 4 is provided on the second connecting flange 2, and the telescopic tube packing box 4 is provided with a telescopic tube sealing packing 5, and the telescopic tube The squeezing between the packing 5 and the telescopic tube 3 realizes the sealing between the two.
容置管结构包括用于与第二连接法兰2相密封的径向密封盘根7，用于容置伸缩管3供其伸缩移动空间的容置管6，设置于容置管6一端的第三连接法兰8，第三连接法兰8用于外接需要补偿的管线，为了保证伸缩管3能在容置管6内实现轴向和径向上的位移移动，容置管6的内径大于伸缩管3的外径，且保证两者之间产生足够大的间隙，以保证足够的径向位移；同时，为了对径向密封盘根7进行限位，避免径向密封盘根随意滑动，在容置管6与第二连接法兰2相接的一端设有限位台12，径向密封盘根7套设在限位台12上，且径向密封盘根7的厚度大于限位台的高度，径向密封盘根7通过限位台12的限位，保证了限位盘根被限位在一个固定的位置，避免径向密封盘根随意滑动。该限位台也可以设置成限位槽的形式，将径向密封盘根放入限位槽内也能实现径向密封盘根的限位。The accommodating tube structure includes a radial sealing packing 7 for sealing with the second connecting flange 2, an accommodating tube 6 for accommodating the telescopic tube 3 for its telescopic movement space, and an accommodating tube 6 arranged at one end of the accommodating tube 6 The third connecting flange 8 and the third connecting flange 8 are used to connect the pipeline that needs compensation. In order to ensure that the telescopic tube 3 can realize the displacement and movement in the axial and radial directions in the accommodating tube 6, the inner diameter of the accommodating tube 6 is larger than The outer diameter of the telescopic tube 3, and ensure that there is a large enough gap between the two to ensure sufficient radial displacement; at the same time, in order to limit the radial sealing packing 7 to avoid random sliding of the radial sealing packing, A limit stand 12 is provided at the end where the accommodating tube 6 and the second connecting flange 2 are connected. The radial seal packing 7 is sleeved on the limit stand 12, and the thickness of the radial seal packing 7 is greater than the limit stand The height of the radial seal packing 7 passes the limit of the limit table 12, which ensures that the limit packing is restricted to a fixed position and avoids the random sliding of the radial seal packing. The limit table can also be set in the form of a limit groove, and the radial seal packing can be placed in the limit groove to achieve the limit of the radial seal packing.
为了实现高温时，本发明膨胀节的及时冷却，提高膨胀节各部件的使用寿命，在第一连接法兰1、第二连接法兰2、伸缩管盘根盒4、以及容置管6的外壁上均设有冷却盘管9，每一个冷却盘管均设有进水口和出水口，在将其进水口和出水口分别外接循环管线时，再通过循环管线的的循环供水，实现膨胀节各部件的冷却，提高其使用的寿命。同时，为了减少进水口和出水口的设置，可以将第二连接法兰2和伸缩管盘根盒4上的冷却盘管9相互连通，使两者功用一个进水口和出水口。其中，容置管6上的冷却盘管可以有多种的设置方式，如呈环绕容置管6的螺旋式设置，或者紧贴容置管6的S型设置。In order to realize the timely cooling of the expansion joints of the present invention at high temperatures and increase the service life of the components of the expansion joints, the first connecting flange 1, the second connecting flange 2, the telescopic tube packing box 4, and the accommodating tube 6 Cooling coils 9 are provided on the outer wall, and each cooling coil is provided with water inlets and water outlets. When the water inlets and outlets of the cooling coils are respectively externally connected to the circulating pipeline, the circulating water supply of the circulating pipeline is used to realize the expansion joint The cooling of each part improves its service life. At the same time, in order to reduce the arrangement of the water inlet and the water outlet, the second connecting flange 2 and the cooling coil 9 on the telescopic tube packing box 4 can be connected to each other, so that the two function as a water inlet and a water outlet. Among them, the cooling coil on the accommodating tube 6 can be arranged in a variety of ways, such as a spiral arrangement surrounding the accommodating tube 6 or an S-shaped arrangement close to the accommodating tube 6.
上述实施例仅为本发明的优选实施方式之一，不应当用于限制本发明的保护范围，但凡在本发明的主体设计思想和精神上作出的毫无实质意义的改动或润色，其所解决的技术问题仍然与本发明一致的，均应当包含在本发明的保护 范围之内。The above-mentioned embodiment is only one of the preferred embodiments of the present invention and should not be used to limit the scope of protection of the present invention. However, any insubstantial changes or polishes made in the main design idea and spirit of the present invention will be solved The technical problems of is still consistent with the present invention, and should be included in the protection scope of the present invention.

Claims (8)

  1. 一种鼎式三维膨胀节，其特征在于：包括第一连接法兰(1)，通过弹簧结构与所述第一连接法兰(1)相连的第二连接法兰(2)，与所述第一连接法兰(1)固定相连并穿过所述第二连接法兰(2)的伸缩管(3)，设置于所述第二连接法兰(2)上的伸缩管盘根盒(4)，设置于所述伸缩管盘根盒(4)内的伸缩管密封盘根(5)，以及与所述第二连接法兰(2)相接的容置管(6)；其中，所述容置管(6)与所述第二连接法兰(2)相接的一端设有径向密封盘根(7)，另一端设有外接管线的第三连接法兰(8)，所述容置管(6)的内径大于所述伸缩管(3)的外径。A tripod type three-dimensional expansion joint, characterized in that it comprises a first connecting flange (1), a second connecting flange (2) connected to the first connecting flange (1) through a spring structure, and The first connecting flange (1) is fixedly connected to and passing through the telescopic tube (3) of the second connecting flange (2), and the telescopic tube packing box (3) arranged on the second connecting flange (2) 4), the telescopic tube sealing packing (5) provided in the telescopic tube packing box (4), and the containing tube (6) connected with the second connecting flange (2); wherein, A radial sealing packing (7) is provided at one end of the accommodating tube (6) connected with the second connecting flange (2), and the other end is provided with a third connecting flange (8) for external pipelines, The inner diameter of the accommodating tube (6) is larger than the outer diameter of the telescopic tube (3).
  2. 根据权利要求1所述的一种鼎式三维膨胀节，其特征在于：所述第一连接法兰(1)、所述第二连接法兰(2)、所述伸缩管盘根盒(4)、以及所述容置管(6)的外壁上均设有冷却盘管(9)。A tripod three-dimensional expansion joint according to claim 1, characterized in that: the first connecting flange (1), the second connecting flange (2), the telescopic tube packing box (4) ), and the outer wall of the accommodating tube (6) are provided with a cooling coil (9).
  3. 根据权利要求2所述的一种鼎式三维膨胀节，其特征在于：所述第二连接法兰(2)和所述伸缩管盘根盒(4)上的冷却盘管(9)相互连通。A tripod three-dimensional expansion joint according to claim 2, characterized in that: the second connecting flange (2) and the cooling coil (9) on the telescopic tube packing box (4) are in communication with each other .
  4. 根据权利要求2或3所述的一种鼎式三维膨胀节，其特征在于：所述容置管(6)上的冷却盘管(9)为环绕所述容置管(6)呈螺旋式设置，或者呈S型设置于所述容置管(6)上。A tripod three-dimensional expansion joint according to claim 2 or 3, characterized in that: the cooling coil (9) on the accommodating tube (6) is spiral-shaped around the accommodating tube (6) Or set on the containing tube (6) in an S-shape.
  5. 根据权利要求1或2所述的一种鼎式三维膨胀节，其特征在于：所述弹簧结构在所述第一连接法兰(1)和所述第二连接法兰(2)之间均匀分布设有至少三组。The tripod three-dimensional expansion joint according to claim 1 or 2, characterized in that: the spring structure is uniform between the first connecting flange (1) and the second connecting flange (2) There are at least three groups in the distribution.
  6. 根据权利要求6所述的一种鼎式三维膨胀节，其特征在于：所述弹簧结构包括固定于所述第一连接法兰(1)上的第一弹簧套筒(10)，固定于所述第二连接法兰(2)上的第二弹簧套筒(11)，以及设置于所述第一弹簧套筒(10)和所述第二弹簧套筒(11)内的弹簧(12)；其中，所述第一弹簧套筒(10) 的内径大于所述第二弹簧套筒(11)的外径，或者所述第一弹簧套筒(10)的外径小于所述第二弹簧套筒(11)的内径。A tripod three-dimensional expansion joint according to claim 6, characterized in that: the spring structure comprises a first spring sleeve (10) fixed on the first connecting flange (1), fixed on the The second spring sleeve (11) on the second connecting flange (2), and the spring (12) arranged in the first spring sleeve (10) and the second spring sleeve (11) Wherein, the inner diameter of the first spring sleeve (10) is greater than the outer diameter of the second spring sleeve (11), or the outer diameter of the first spring sleeve (10) is smaller than the second spring The inner diameter of the sleeve (11).
  7. 根据权利要求6所述的一种鼎式三维膨胀节，其特征在于：所述第一弹簧套筒(10)内还设有内螺纹，且所述内螺纹配设有用于调节所述弹簧压缩强度的调节螺杆。A tripod-type three-dimensional expansion joint according to claim 6, characterized in that: the first spring sleeve (10) is also provided with an internal thread, and the internal thread is provided for adjusting the compression of the spring. Strength adjustment screw.
  8. 根据权利要求1所述的一种鼎式三维膨胀节，其特征在于：所述容置管(6)与所述第二连接法兰(2)相接的一端设有限位台(12)，所述径向密封盘根(7)套设在所述限位台(12)上，且所述径向密封盘根(7)的厚度大于所述限位台的高度。The tripod three-dimensional expansion joint according to claim 1, characterized in that: a limit stand (12) is provided at one end of the accommodating tube (6) and the second connecting flange (2), The radial sealing packing (7) is sleeved on the limiting platform (12), and the thickness of the radial sealing packing (7) is greater than the height of the limiting platform.
PCT/CN2020/123930 2019-11-12 2020-10-27 Tripod-type three-dimensional expansion joint WO2021093571A1 (en)

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CN110822203A (en) * 2019-11-12 2020-02-21 山西河坡发电有限责任公司 Tripod type three-dimensional expansion joint

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