CN114352849A - Mechanism for reducing friction resistance of high-temperature steam pipeline - Google Patents
Mechanism for reducing friction resistance of high-temperature steam pipeline Download PDFInfo
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- CN114352849A CN114352849A CN202210157108.6A CN202210157108A CN114352849A CN 114352849 A CN114352849 A CN 114352849A CN 202210157108 A CN202210157108 A CN 202210157108A CN 114352849 A CN114352849 A CN 114352849A
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Abstract
The invention provides a mechanism for reducing the friction resistance of a high-temperature steam pipeline, which is characterized in that at least one annular hard heat-insulating support is arranged between a shell of a heat-insulating material and the high-temperature steam pipeline, the hard heat-insulating support is coaxially sleeved on the high-temperature steam pipeline, an arc-shaped supporting plate is arranged between each hard heat-insulating support and the high-temperature steam pipeline, the arc-shaped supporting plate is fixedly connected with the hard heat-insulating support, an arc-shaped opening is arranged on one side of the arc-shaped supporting plate, which is close to the high-temperature steam pipeline, for supporting the high-temperature steam pipeline, a lubricating medium layer is arranged between the surface of the arc-shaped opening and the high-temperature steam pipeline, rolling bodies are uniformly distributed in the lubricating medium layer, and the diameter of each rolling body is larger than the thickness of the lubricating medium layer. According to the invention, the arc-shaped supporting plate is additionally arranged between the high-temperature steam pipeline and the heat insulation material, and the lubricating medium layer with the rolling body is coated between the arc-shaped supporting plate and the high-temperature steam pipeline, so that the frictional resistance applied to the steam steel pipe during thermal displacement can be greatly reduced, and the stability of the pipeline is ensured.
Description
Technical Field
The invention relates to the fixation of a high-temperature steam pipeline, in particular to a mechanism for reducing the friction resistance of the high-temperature steam pipeline.
Background
China develops the economy at a high speed in the last forty years and becomes the largest manufacturing country internationally. With industrial development, particularly the construction of industrial parks in various regions; industrial steam conveying pipe networks have been developed. Industrial steam pipe networks, whether on scale or at the construction level, are remote leaders around the world. The radiation radius of the pipe network continuously extends farther, and the pipe diameter is also continuously enlarged, so that the weight of the pipeline and the heat-insulating layer thereof is increased. Compared with the initial development stage, the method is not a problematic link in the past, and because the scale of a pipe network is enlarged, the method cannot be ignored, even faults are caused, and the support of the overhead pipeline is one of the problems.
The temperature of a medium in the steam pipeline is 200-300 ℃, the temperature of the medium fluctuates at any time, and the temperature change of the medium causes the expansion and contraction of the steel pipe, so that the component for supporting the pipeline needs to ensure that the pipeline freely moves on the bracket, and the friction force is necessarily generated when the pipeline and the bracket move relatively. When the scale of the pipe network is small, the weight of the pipeline is small, and the friction force between the pipeline and the support is small, so that attention is not needed. But now the pipe size is increasing and the above mentioned friction becomes so great that there is a tendency to push down the pipe network buttresses. The friction force between the pipeline and the bracket is raised to the position which is related to the safety of the pipe network. For whether the social demand of the pipe network expanding continuously can be met, solving the friction becomes one of the key links. The present invention is directed to the needs created by economic developments.
Disclosure of Invention
According to the invention, the arc-shaped supporting plate is additionally arranged between the high-temperature steam pipeline and the heat insulation material, and the lubricating medium layer with the rolling body is coated between the arc-shaped supporting plate and the high-temperature steam pipeline, so that the frictional resistance applied to the steam steel pipe during thermal displacement can be greatly reduced, and the stability of the pipeline is ensured. The specific scheme is as follows:
a mechanism for reducing the friction resistance of a high-temperature steam pipeline is characterized in that the outside of the high-temperature steam pipeline is coated with a heat-insulating material and is fixed on a concrete buttress through a bracket,
at least one annular hard heat-insulation support is arranged between the shell of the heat-insulation material and the high-temperature steam pipeline, the hard heat-insulation supports are coaxially sleeved on the high-temperature steam pipeline, arc-shaped support plates are arranged between the hard heat-insulation supports and the high-temperature steam pipeline, the arc-shaped support plates are fixedly connected with the hard heat-insulation supports, an arc-shaped opening is arranged on one side, close to the high-temperature steam pipeline, of each arc-shaped support plate and used for supporting the high-temperature steam pipeline, a lubricating medium layer is arranged between the surface of the arc-shaped opening of each arc-shaped support plate and the high-temperature steam pipeline, rolling bodies are uniformly distributed in the lubricating medium layer, the diameter of each rolling body is larger than the thickness of the lubricating medium layer, and the high-temperature steam pipeline slides in the arc-shaped opening of each arc-shaped support plate along the axial direction of the high-temperature steam pipeline under the action of expansion and contraction and the action of the rolling bodies, and enabling the rolling bodies to roll between the high-temperature steam pipeline and the arc-shaped supporting plate.
Further, the arc-shaped supporting plate is a section of arc-shaped supporting plate contacted with the outer diameter of the bottom of the high-temperature steam pipeline; or
The arc-shaped supporting plate is an annular supporting plate which is annularly arranged between the high-temperature steam pipeline and the heat-insulating material.
Furthermore, each side edge of the arc-shaped opening is provided with a baffle extending in the radial direction, and the height of the baffle is lower than the diameter of the rolling body.
Further, the arc-shaped supporting plate is made of stainless steel and is arranged in two ends of the heat insulation material.
Further, the rolling bodies are spherical.
Furthermore, the rolling bodies are steel balls or glass balls with the diameter of 1 mm-5 mm.
Furthermore, the lubricating medium layer is viscous lubricating paste.
Furthermore, the heat-insulating material consists of a hard heat-insulating ring and a heat-insulating shell sleeved outside the hard heat-insulating ring.
According to the invention, the arc-shaped supporting plate is additionally arranged between the high-temperature steam pipeline and the heat-insulating material, and the lubricating medium layer with the rolling bodies is coated between the arc-shaped supporting plate and the high-temperature steam pipeline, so that the steam steel pipe is only contacted with the rolling bodies on the arc-shaped supporting plate and is not contacted with the heat-insulating material when the steam steel pipe is axially displaced due to temperature change, and therefore, the friction resistance applied to the steam steel pipe when the steam steel pipe is thermally displaced can be greatly reduced, and the stability of the pipeline is ensured.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a front view of a mechanism for reducing frictional resistance of a high temperature steam line according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 taken in direction A;
FIG. 3 is an enlarged view of a portion of FIG. 2 at B;
FIG. 4 is a perspective view of an embodiment of an arcuate pallet;
FIG. 5 is an enlarged view of the corners of the curved pallet illustrating the presence of baffles on each side of the curved pallet, in accordance with one embodiment.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
For the steam pipe network with the internal sliding mode, when the steam steel pipe is subjected to thermal displacement, the heat insulation layer comprising the concrete pier, the bracket and the pipeline except the steam steel pipe does not move relative to the ground, and as shown in fig. 1, a friction pair is formed by the high-temperature steam pipeline 1 and the heat insulation material 6 (the main body is made of microporous calcium silicate tiles). The frictional resistance depends on the normal acting force between the steel pipe and the heat-insulating tile and the friction coefficient of the friction pair. The normal acting force comprises the weight of the steam steel pipe and the gripping force of the heat insulation tile to the steel pipe, if the friction force is reduced, the gripping force can be avoided in the process of manufacturing the heat insulation pipeline, but the weight of the steel pipe cannot be avoided, so the rest way is only to reduce the friction coefficient of a friction pair. Under the mechanism, rolling friction is formed between the steam steel pipe and the heat-insulating tile, so that the friction resistance of the high-temperature steam pipeline 1 in the axial displacement process of the pipeline due to temperature change is reduced. The concrete measures are as follows:
referring to fig. 1-3, the mechanism for reducing the frictional resistance of the high-temperature steam pipeline provided by the invention is characterized in that the high-temperature steam pipeline is coated with a heat insulation material 6 and fixed on a concrete buttress through a bracket, at least one annular hard heat-insulating support 2 is arranged between a shell 3 made of heat-insulating materials and the high-temperature steam pipeline 1, the hard heat-insulating support 2 is coaxially sleeved on the high-temperature steam pipeline 1, an arc-shaped supporting plate 5 is arranged between each hard heat-insulating support 2 and the high-temperature steam pipeline 1, the arc-shaped supporting plate 5 is fixedly connected with the hard heat-insulating support 2, an arc-shaped opening 51 is arranged on one side of the arc-shaped supporting plate 5, which is close to the high-temperature steam pipeline, and is used for supporting the high-temperature steam pipeline 1, a lubricating medium layer 4 is arranged between the surface of the arc-shaped opening 51 and the high-temperature steam pipeline 1, rolling bodies 41 are uniformly distributed in the lubricating medium layer 4, and the diameter of each rolling body 41 is slightly larger than the thickness of the lubricating medium layer 4. When the steam steel pipe is axially displaced in the pipeline due to temperature change, the steam steel pipe is only contacted with the rolling bodies 41 on the arc-shaped supporting plate 5 and is not contacted with the heat insulation material, and large-area sliding friction generated by the steam steel pipe in the axial displacement of the pipeline due to temperature change is changed into multipoint rolling friction, so that the friction resistance is greatly reduced. Furthermore, the rolling bodies 41 roll more smoothly with the aid of the lubricant layer 4, and the viscous lubricant layer 4 also serves to fix the rolling bodies 41, thereby preventing the rolling bodies 41 from rolling arbitrarily to a region other than the bottom plate 32, which leads to a reduction in the number of rolling bodies 41.
In an alternative embodiment, the rolling elements 41 are ball-shaped rolling elements made of steel balls, glass beads or other materials. The diameter of the rolling body 41 is not too large or too small, and the overall specification of the heat-insulating layer is further increased due to the too large diameter, so that the weight and the cost are increased; too small may result in the rolling elements 41 not having a rolling effect. In the present invention, therefore, steel balls having a diameter of 1mm to 5mm (preferably 3mm) are used as the balls in the lubricating medium layer 4. The steel ball is low in cost, strong in bearing capacity and good in economic benefit and stability.
The lubricating medium layer 4 of the present invention is a viscous lubricating paste such as butter. In some particular cases, graphite may also be selected as the layer of lubricating medium 4.
The high-temperature steam pipeline is manufactured in advance and then a section of the high-temperature steam pipeline is connected end to end, so that in the invention, a hard heat-insulating support 2 and an arc-shaped supporting plate 5 are respectively arranged at two ends of each section of heat-insulating material, and two ends of the high-temperature steam pipeline are in contact with the rolling bodies. Preferably, the arc-shaped supporting plate 5 is made of stainless steel.
In one embodiment, the arc-shaped supporting plate 5 is a section of arc-shaped supporting plate contacting with the outer diameter of the bottom of the high-temperature steam pipeline 1, as shown in fig. 4. In another embodiment, the arc-shaped supporting plate 5 can also be an annular supporting plate which is annularly arranged between the high-temperature steam pipeline 1 and the heat insulating material 6.
Further, in order to prevent the lubricant paste 4 and the rolling elements 41 from escaping to the outside of the arc-shaped supporting plate 5 during the axial sliding of the high-temperature steam pipe 1, radially extending baffles 52 may be provided at each side of the arc-shaped opening 51 of the arc-shaped supporting plate 5. As shown in fig. 4 to 5, the height 52 of the shield is slightly lower than the diameter of the rolling body 41, so that the rolling area of the rolling body 41 is limited only in the arc-shaped opening 51 of the arc-shaped pallet 5. Meanwhile, the height of the baffle plate 52 is lower than that of the rolling body 41, so that the high-temperature steam pipeline which slides axially cannot be interfered.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (8)
1. A mechanism for reducing the friction resistance of a high-temperature steam pipeline, wherein the outside of the high-temperature steam pipeline is coated with a heat-insulating material (6) and is fixed on a concrete buttress through a bracket, is characterized in that,
at least one annular hard heat-insulating support (2) is arranged between the shell (3) of the heat-insulating material and the high-temperature steam pipeline (1), the hard heat-preservation supports (2) are coaxially sleeved on the high-temperature steam pipeline (1), arc-shaped supporting plates (5) are arranged between each hard heat-preservation support (2) and the high-temperature steam pipeline (1), the arc-shaped supporting plate (5) is fixedly connected with the hard heat-preservation support (2), one side of the arc-shaped supporting plate (5) close to the high-temperature steam pipeline (1) is provided with an arc-shaped opening (51) for supporting the high-temperature steam pipeline (1), a lubricating medium layer (4) is arranged between the surface of the arc-shaped opening (51) and the high-temperature steam pipeline (1), rolling bodies (41) are uniformly distributed in the lubricating medium layer (4), and the diameter of each rolling body (41) is larger than the thickness of the lubricating medium layer (4);
under the action of thermal expansion and cold contraction, the high-temperature steam pipeline (1) slides along the axial direction of the high-temperature steam pipeline in the arc opening (51) of the arc supporting plate (5) and acts on the rolling body (41), so that the rolling body (41) rolls between the high-temperature steam pipeline (1) and the arc supporting plate (5).
2. The mechanism for reducing the frictional resistance of the high-temperature steam pipeline according to claim 1, wherein the arc-shaped supporting plate (5) is a section of arc-shaped supporting plate which is in contact with the outer diameter of the bottom of the high-temperature steam pipeline (1); or
The arc-shaped supporting plate (5) is an annular supporting plate which is annularly arranged between the high-temperature steam pipeline (1) and the heat-insulating material.
3. The mechanism for reducing the frictional resistance of the high-temperature steam pipeline as recited in claim 1, wherein each side of the arc-shaped opening (51) is provided with a radially extending baffle (52), and the height of the baffle (52) is lower than the diameter of the rolling body (41).
4. The mechanism for reducing the friction resistance of the high-temperature steam pipeline as claimed in claim 2, wherein a hard heat-insulating support (2) and an arc-shaped supporting plate (5) are respectively arranged at two ends of each section of heat-insulating material (6);
the arc-shaped supporting plate (5) is a steel supporting plate.
5. The mechanism for reducing the frictional resistance of a high-temperature steam pipe as set forth in claim 1, wherein the rolling bodies (41) are spherical.
6. The mechanism for reducing the friction resistance of the high-temperature steam pipeline as recited in claim 4, wherein the rolling bodies (41) are steel balls or glass balls with the diameter of 1 mm-5 mm.
7. The mechanism for reducing the friction resistance of the high-temperature steam pipeline as recited in claim 1, wherein the lubricating medium layer (4) is viscous lubricating paste.
8. The mechanism for reducing the friction resistance of the high-temperature steam pipeline as recited in claim 1, wherein the heat insulating material is composed of a heat insulating layer (6) and a heat insulating shell (3) sleeved outside the heat insulating layer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157108.6A CN114352849A (en) | 2022-02-21 | 2022-02-21 | Mechanism for reducing friction resistance of high-temperature steam pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157108.6A CN114352849A (en) | 2022-02-21 | 2022-02-21 | Mechanism for reducing friction resistance of high-temperature steam pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN114352849A true CN114352849A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210157108.6A Pending CN114352849A (en) | 2022-02-21 | 2022-02-21 | Mechanism for reducing friction resistance of high-temperature steam pipeline |
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| CN (1) | CN114352849A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189641A (en) * | 1966-03-17 | 1970-04-29 | Thermac Insulations Ltd | Improvements in and relating to a Support for Thermally Insulated Piping and Ducting. |
| FR2629563A1 (en) * | 1988-04-01 | 1989-10-06 | Armpal Sarl | Method and device for heat-insulating a pipeline through which a heat-transfer fluid flows |
| CN103148311A (en) * | 2013-03-22 | 2013-06-12 | 航天晨光股份有限公司 | Spherical-shell-type universal angle expansion joint |
| CN206802522U (en) * | 2017-04-23 | 2017-12-26 | 江苏地龙管业有限公司 | Steel sleeve steel prefabricated thermal insulation steam slip thermal pipe |
| CN109723937A (en) * | 2019-01-31 | 2019-05-07 | 上海科华热力管道有限公司 | The prefabricated aerial composite vapor insulating tube of one kind and its manufacturing method |
| CN110296275A (en) * | 2019-08-07 | 2019-10-01 | 中国船舶重工集团公司第七0三研究所 | Rolling friction thermal pipe bracket assembly |
| CN210240318U (en) * | 2019-07-03 | 2020-04-03 | 潍坊业兴新型建材有限公司 | Submerged pump bushing made of Nilun material |
| CN210531879U (en) * | 2019-08-15 | 2020-05-15 | 江苏地龙管业有限公司 | Guide bracket for prefabricated direct-buried steel-sheathed steel steam insulation pipe |
| CN112503306A (en) * | 2020-12-16 | 2021-03-16 | 常州大学 | Energy-saving active rolling heat insulation pipe carrier structure with monitoring function |
-
2022
- 2022-02-21 CN CN202210157108.6A patent/CN114352849A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189641A (en) * | 1966-03-17 | 1970-04-29 | Thermac Insulations Ltd | Improvements in and relating to a Support for Thermally Insulated Piping and Ducting. |
| FR2629563A1 (en) * | 1988-04-01 | 1989-10-06 | Armpal Sarl | Method and device for heat-insulating a pipeline through which a heat-transfer fluid flows |
| CN103148311A (en) * | 2013-03-22 | 2013-06-12 | 航天晨光股份有限公司 | Spherical-shell-type universal angle expansion joint |
| CN206802522U (en) * | 2017-04-23 | 2017-12-26 | 江苏地龙管业有限公司 | Steel sleeve steel prefabricated thermal insulation steam slip thermal pipe |
| CN109723937A (en) * | 2019-01-31 | 2019-05-07 | 上海科华热力管道有限公司 | The prefabricated aerial composite vapor insulating tube of one kind and its manufacturing method |
| CN210240318U (en) * | 2019-07-03 | 2020-04-03 | 潍坊业兴新型建材有限公司 | Submerged pump bushing made of Nilun material |
| CN110296275A (en) * | 2019-08-07 | 2019-10-01 | 中国船舶重工集团公司第七0三研究所 | Rolling friction thermal pipe bracket assembly |
| CN210531879U (en) * | 2019-08-15 | 2020-05-15 | 江苏地龙管业有限公司 | Guide bracket for prefabricated direct-buried steel-sheathed steel steam insulation pipe |
| CN112503306A (en) * | 2020-12-16 | 2021-03-16 | 常州大学 | Energy-saving active rolling heat insulation pipe carrier structure with monitoring function |
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