CN204512769U - Telescopic expanded telescopic joint - Google Patents
Telescopic expanded telescopic joint Download PDFInfo
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- CN204512769U CN204512769U CN201420846197.6U CN201420846197U CN204512769U CN 204512769 U CN204512769 U CN 204512769U CN 201420846197 U CN201420846197 U CN 201420846197U CN 204512769 U CN204512769 U CN 204512769U
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- Prior art keywords
- outer cylinder
- telescopic
- inner cylinder
- expansion joint
- cylinder
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims description 23
- 238000012856 packing Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- Joints Allowing Movement (AREA)
Abstract
Description
技术领域technical field
本实用新型涉及锅炉设备，具体地，涉及一种套筒式膨胀伸缩节。The utility model relates to boiler equipment, in particular to a sleeve type expansion expansion joint.
背景技术Background technique
电站车间锅炉采用前吊后支式固定方式，锅炉起炉前后温差高达100℃左右，因热膨胀造成的锅炉膨胀、错位较大，落煤管或者送风管等因锅炉热膨胀导致错位，造成燃料浪费、现场环境污染。为解决管道错位的问题，通常将膨胀节设置在各个管道上，来补偿因温度差与机械振动引起的附加应力。目前广泛使用的膨胀节包括膨胀节本体以及焊接在两端的法兰，其中膨胀节为整体结构件，结构复杂，两端法兰需现场焊接，加工、安装难度大，在两端法兰与其它设备用螺栓刚性联接，高温受热后，轴向膨胀受到限制，使径向变形加大，导致内部耐高温集料脱落，造成膨胀节烧损，因此使用寿命短。The boiler in the power plant workshop adopts the front-hanging and rear-supporting fixing method. The temperature difference before and after the boiler starts up is as high as about 100°C. The boiler expansion and misalignment caused by thermal expansion are large. The misalignment of the coal drop pipe or air supply pipe due to the thermal expansion of the boiler results in fuel waste. , On-site environmental pollution. In order to solve the problem of pipeline misalignment, expansion joints are usually arranged on each pipeline to compensate the additional stress caused by temperature difference and mechanical vibration. At present, the widely used expansion joints include the expansion joint body and the flanges welded at both ends. The expansion joint is an integral structural part with a complex structure. The flanges at both ends need to be welded on site, which is difficult to process and install. The equipment is rigidly connected by bolts. After being heated at high temperature, the axial expansion is limited, which increases the radial deformation, causes the internal high-temperature-resistant aggregate to fall off, and causes the expansion joint to burn, so the service life is short.
有鉴于现有技术的上述缺点，需要提供一种新型的套筒式膨胀伸缩节。In view of the above-mentioned shortcomings of the prior art, it is necessary to provide a new type of telescopic expansion joint.
实用新型内容Utility model content
本实用新型的目的是提供一种结构简单且使用寿命长的套筒式膨胀伸缩节。The purpose of the utility model is to provide a sleeve type expansion expansion joint with simple structure and long service life.
为了实现上述目的，本实用新型提供一种套筒式膨胀伸缩节，该套筒式膨胀伸缩节包括外筒、内筒和密封元件，所述内筒插入所述外筒内且相对于所述外筒轴向定位，所述内筒与所述外筒之间存在间隙，所述密封元件密封所述间隙。In order to achieve the above object, the utility model provides a sleeve-type expansion and expansion joint, the sleeve-type expansion and expansion joint includes an outer cylinder, an inner cylinder and a sealing element, the inner cylinder is inserted into the outer cylinder and opposite to the The outer cylinder is axially positioned, there is a gap between the inner cylinder and the outer cylinder, and the sealing element seals the gap.
优选地，所述内筒的第一端设有用于与所述外筒的第一端定位的第一凸缘。Preferably, the first end of the inner cylinder is provided with a first flange for positioning with the first end of the outer cylinder.
优选地，所述外筒的第一端设有用于止挡所述第一凸缘的第二凸缘。Preferably, the first end of the outer cylinder is provided with a second flange for stopping the first flange.
优选地，所述外筒的内周壁上设有孔肩，所述密封元件通过所述孔肩与所述内筒的第二端的配合而安装于所述外筒与所述内筒之间。Preferably, a shoulder is provided on the inner peripheral wall of the outer cylinder, and the sealing element is installed between the outer cylinder and the inner cylinder through the cooperation of the shoulder and the second end of the inner cylinder.
优选地，所述外筒的第二端逐渐向内缩小形成缩口。Preferably, the second end of the outer cylinder gradually narrows inwards to form a constriction.
优选地，所述密封元件为石墨盘根。Preferably, the sealing element is graphite packing.
优选地，所述外筒和所述内筒均为不锈钢筒件。Preferably, both the outer cylinder and the inner cylinder are stainless steel cylinders.
上述技术方案通过外筒、间隙插入外筒内的内筒以及密封该间隙的密封元件的配合，保障管道良好的弹性伸缩，减少管道开裂，解决管道因锅炉热膨胀导致错位而造成的燃料浪费、现场环境污染，减少了设备的检修成本。本实用新型的技术方案结构简单、容易安装且使用寿命长，还具有温度适应性广、自由伸缩易恢复的特点。The above-mentioned technical scheme guarantees good elastic expansion and contraction of the pipeline through the cooperation of the outer cylinder, the inner cylinder inserted into the outer cylinder through the gap, and the sealing element that seals the gap, so as to reduce the cracking of the pipeline and solve the fuel waste caused by the dislocation of the pipeline due to the thermal expansion of the boiler. Environmental pollution, reducing equipment maintenance costs. The technical solution of the utility model is simple in structure, easy to install and has a long service life, and also has the characteristics of wide temperature adaptability, free expansion and contraction and easy restoration.
本实用新型的其他特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present utility model will be described in detail in the following specific embodiments.
附图说明Description of drawings
附图是用来提供对本实用新型的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本实用新型，但并不构成对本实用新型的限制。在附图中：The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:
图1是本实用新型的套筒式膨胀伸缩节的剖视图。Fig. 1 is a cross-sectional view of the sleeve type expansion joint of the present invention.
其中，in,
1 外筒 2 内筒1 Outer cylinder 2 Inner cylinder
3 密封元件3 sealing elements
具体实施方式Detailed ways
以下结合附图对本实用新型的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本实用新型，并不用于限制本实用新型。The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.
本实用新型提供一种套筒式膨胀伸缩节，该套筒式膨胀伸缩节包括外筒1、内筒2和密封元件3，内筒2插入外筒1内且相对于外筒1轴向定位，内筒2与外筒1之间存在间隙，密封元件3密封间隙。通过外筒1、间隙插入外筒1内的内筒2以及密封该间隙的密封元件3的配合，保障管道良好的弹性伸缩，减少管道开裂，解决管道因锅炉热膨胀导致错位而造成的燃料浪费、现场环境污染，减少了设备的检修成本。本实用新型的技术方案结构简单、容易安装且使用寿命长，还具有温度适应性广、自由伸缩易恢复的特点。The utility model provides a sleeve type expansion and expansion joint, the sleeve type expansion expansion joint includes an outer cylinder 1, an inner cylinder 2 and a sealing element 3, the inner cylinder 2 is inserted into the outer cylinder 1 and positioned axially relative to the outer cylinder 1 , There is a gap between the inner cylinder 2 and the outer cylinder 1, and the sealing element 3 seals the gap. Through the cooperation of the outer cylinder 1, the inner cylinder 2 inserted into the outer cylinder 1 through the gap, and the sealing element 3 that seals the gap, good elastic expansion and contraction of the pipeline is ensured, cracking of the pipeline is reduced, and fuel waste caused by dislocation of the pipeline due to thermal expansion of the boiler is solved. On-site environmental pollution reduces equipment maintenance costs. The technical solution of the utility model is simple in structure, easy to install and has a long service life, and also has the characteristics of wide temperature adaptability, free expansion and contraction and easy restoration.
其中，本实用新型的套筒式膨胀伸缩节在安装使用时，外筒1和内筒2的轴线均平行于竖直方向，且外筒1与内筒2分别与不同的管道进行焊接，从而在进行轴向定位的同时，能够很好地补偿管道的径向变形。Wherein, when the telescopic expansion joint of the utility model is installed and used, the axes of the outer cylinder 1 and the inner cylinder 2 are parallel to the vertical direction, and the outer cylinder 1 and the inner cylinder 2 are respectively welded with different pipes, so that While performing axial positioning, the radial deformation of the pipe can be well compensated.
如图1所示，内筒2的第一端设有用于与外筒1的第一端定位的第一凸缘。第一凸缘沿内筒2的第一端的端面向外延伸，使内筒2相对于外筒1的第一端轴向定位于外筒1的上部。作为一种优选的实施方式，外筒1的第一端设有用于止挡第一凸缘的第二凸缘。通过第一凸缘与第二凸缘的配合，实现外筒1与内筒2的轴向定位。As shown in FIG. 1 , the first end of the inner cylinder 2 is provided with a first flange for positioning with the first end of the outer cylinder 1 . The first flange extends outward along the end face of the first end of the inner cylinder 2 , so that the inner cylinder 2 is axially positioned on the upper part of the outer cylinder 1 relative to the first end of the outer cylinder 1 . As a preferred embodiment, the first end of the outer cylinder 1 is provided with a second flange for stopping the first flange. Through the cooperation of the first flange and the second flange, the axial positioning of the outer cylinder 1 and the inner cylinder 2 is realized.
进一步地，外筒1的内周壁上设有孔肩，密封元件3通过孔肩与内筒2的第二端的配合而安装于外筒1与内筒2之间上。其中，孔肩是指阶梯孔中直径发送变化部位的环形平面。在对实施方式中的套筒式膨胀伸缩节进行组装时，先将密封元件3安装于内筒2第二端上，再内筒2将固定卡合于外筒1内的孔肩上，而固定密封元件3并密封间隙。密封元件3能够对外筒1与内筒2之间的间隙进行密封，而防止喷煤渣或者漏风。可以理解地，虽然在本实施方式中，为了便于安装，将密封元件3设置在内筒2的第二端来密封外筒1与内筒2之间的间隙，但也可以直接将密封元件3压紧在外筒1与内筒2之间的间隙来实现密封。Further, a shoulder is provided on the inner peripheral wall of the outer cylinder 1 , and the sealing element 3 is installed between the outer cylinder 1 and the inner cylinder 2 through the cooperation of the shoulder and the second end of the inner cylinder 2 . Wherein, the hole shoulder refers to the annular plane of the diameter transmission change part in the stepped hole. When assembling the telescopic expansion joint in the embodiment, first install the sealing element 3 on the second end of the inner cylinder 2, and then the inner cylinder 2 will be fixedly engaged with the hole shoulder in the outer cylinder 1, and Fix the sealing element 3 and seal the gap. The sealing element 3 can seal the gap between the outer cylinder 1 and the inner cylinder 2 to prevent coal slag or air leakage. It can be understood that although in this embodiment, for the convenience of installation, the sealing element 3 is arranged at the second end of the inner cylinder 2 to seal the gap between the outer cylinder 1 and the inner cylinder 2, but the sealing element 3 can also be directly Compress the gap between the outer cylinder 1 and the inner cylinder 2 to achieve sealing.
在本实施方式中，外筒1的第二端逐渐向内缩小形成缩口。具体为，外筒1的靠近第二端的部位向外筒1的第二端逐渐向内缩小形成缩口，当管道内输送煤炭等颗粒物料时，外筒1的第二端的缩口能够缓冲物料对下方管道的冲击力。In this embodiment, the second end of the outer cylinder 1 gradually narrows inwards to form a constriction. Specifically, the part near the second end of the outer cylinder 1 gradually shrinks inwardly to form a constriction. When the pipeline transports coal and other granular materials, the constriction at the second end of the outer cylinder 1 can buffer the material. Impact on the pipe below.
另外，密封元件3可为石墨盘根或者橡胶密封圈等。外筒1和内筒2均为不锈钢筒件。不锈钢筒件具有耐雨水腐蚀、粉尘摩擦、耐高温、材质较轻等特点。采用石墨盘根进行填料密封，利用盘根的塑性形成的径向力与外筒1、内筒2之间形成紧密接触，同时填料中浸渍的润滑剂被挤出在接触面形成油膜。利用接触面的不均匀形成的“轴承效应”与“迷宫效应”保证填料与外筒1、内筒2之间具有良好润滑和弹性膨胀。In addition, the sealing element 3 can be a graphite packing or a rubber sealing ring. Both the outer cylinder 1 and the inner cylinder 2 are stainless steel cylinder parts. The stainless steel cylinder has the characteristics of rainwater corrosion resistance, dust friction, high temperature resistance, and light material. Graphite packing is used for packing and sealing, and the radial force formed by the plasticity of the packing is used to form a close contact with the outer cylinder 1 and inner cylinder 2, and the lubricant impregnated in the packing is squeezed out to form an oil film on the contact surface. The "bearing effect" and "labyrinth effect" formed by the inhomogeneous contact surface are used to ensure good lubrication and elastic expansion between the filler and the outer cylinder 1 and inner cylinder 2.
以上结合附图详细描述了本实用新型的优选实施方式，但是，本实用新型并不限于上述实施方式中的具体细节，在本实用新型的技术构思范围内，可以对本实用新型的技术方案进行多种简单变型，这些简单变型均属于本实用新型的保护范围。The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本实用新型对各种可能的组合方式不再另行说明。In addition, it should be noted that the various specific technical features described in the above specific implementation manners may be combined in any suitable manner if there is no contradiction. In order to avoid unnecessary repetition, the utility model will not further describe various possible combinations.
此外，本实用新型的各种不同的实施方式之间也可以进行任意组合，只要其不违背本实用新型的思想，其同样应当视为本实用新型所公开的内容。In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420846197.6U CN204512769U (en) | 2014-12-26 | 2014-12-26 | Telescopic expanded telescopic joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420846197.6U CN204512769U (en) | 2014-12-26 | 2014-12-26 | Telescopic expanded telescopic joint |
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| Publication Number | Publication Date |
|---|---|
| CN204512769U true CN204512769U (en) | 2015-07-29 |
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ID=53710747
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420846197.6U Expired - Lifetime CN204512769U (en) | 2014-12-26 | 2014-12-26 | Telescopic expanded telescopic joint |
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| Country | Link |
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| CN (1) | CN204512769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098669A (en) * | 2018-08-06 | 2018-12-28 | 李奇元 | Oil exploitation soft graphite thermal stress compensator |
| CN111830074A (en) * | 2020-07-23 | 2020-10-27 | 山东省科学院新材料研究所 | Thermal Analysis Method for Testing Volatile and Oxidable Alloy Materials with Reusable Nested Sealed Crucibles |
-
2014
- 2014-12-26 CN CN201420846197.6U patent/CN204512769U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098669A (en) * | 2018-08-06 | 2018-12-28 | 李奇元 | Oil exploitation soft graphite thermal stress compensator |
| CN111830074A (en) * | 2020-07-23 | 2020-10-27 | 山东省科学院新材料研究所 | Thermal Analysis Method for Testing Volatile and Oxidable Alloy Materials with Reusable Nested Sealed Crucibles |
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