阅读说明：本技术 一种预浸料型管道保温装置及其施工方法、施工设备 (Prepreg type pipeline heat preservation device and construction method and construction equipment thereof ) 是由 张继承 董会娜 何凤霞 张珂 张东生 刘喜宗 陈帅 李帅帅 于 2021-09-08 设计创作，主要内容包括：本发明涉及一种预浸料型管道保温装置及其施工方法、施工设备,包裹于管道本体的外部,其特征在于：包括由内至外依次设置的隔热机构和外防护机构,所述隔热机构通过片状隔热件或条状隔热件包裹于管道本体的外壁,所述外防护机构通过片状的预浸料或条状的预浸料包裹于热反射机构的外壁后固化成型。具体步骤包括沿管道主体的外壁铺设隔热机构、热反射机构及未固化的预浸料；然后未固化的预浸料通过常温固化或者通过施工设备的加热机构加热固化。本发明的结构完整性好,降低管网运行时的热损失,施工方法简单便捷。(The invention relates to a prepreg type pipeline heat preservation device, a construction method and construction equipment thereof, which are wrapped outside a pipeline body and are characterized in that: the heat insulation mechanism comprises a heat insulation mechanism and an outer protection mechanism, wherein the heat insulation mechanism and the outer protection mechanism are sequentially arranged from inside to outside, the heat insulation mechanism wraps the outer wall of the pipeline body through a sheet heat insulation piece or a strip heat insulation piece, and the outer protection mechanism is formed by curing and molding the outer wall of the heat reflection mechanism through a sheet prepreg or a strip prepreg. The method comprises the following steps of paving a heat insulation mechanism, a heat reflection mechanism and uncured prepreg along the outer wall of a pipeline main body; the uncured prepreg is then cured by ambient temperature curing or heat curing by the heating mechanism of the construction equipment. The invention has good structural integrity, reduces the heat loss of the pipe network during operation, and has simple and convenient construction method.)

1. The utility model provides a prepreg type pipeline heat preservation device, wraps up in the outside of pipeline body, its characterized in that: the thermal insulation mechanism comprises a thermal insulation mechanism (11) and an outer protection mechanism (13) which are sequentially arranged from inside to outside, wherein the outer protection mechanism (13) is a prepreg, and the prepreg is wrapped outside the thermal insulation mechanism (11) and then is subjected to curing molding.

2. The prepreg type pipe insulation device according to claim 1, wherein: and a heat reflection mechanism (12) is also arranged between the heat insulation mechanism (11) and the outer protection mechanism (13).

3. A prepreg type pipe insulation device as claimed in claim 1 or 2, wherein: the heat insulation mechanism (11) is wrapped on the outer wall of the pipeline body through a heat insulation piece, and the heat insulation piece is aerogel felt or a heat insulation hose; the thermal insulation piece is further wrapped by a corrosion-resistant layer.

4. A prepreg type pipe insulation device as claimed in claim 3, wherein: the heat-insulation hose is a hose filled with heat-insulation filler; the heat-insulating filler (14) is one or a combination of more of aerogel powder, titanium dioxide particles, silicon dioxide particles, zinc oxide particles, hollow glass microspheres, muscovite powder, corundum powder, mullite powder, hollow phenolic resin microspheres and hollow carbon microspheres; the hose (15) is one of a rubber hose and a silica gel hose.

5. The prepreg type pipe insulation device according to claim 1, wherein: the prepreg is a matrix material impregnated with reinforcing fibers; the reinforced fiber is one of carbon fiber, glass fiber, aramid fiber, boron fiber, biological fiber, polyester fiber and polyamide fiber; the matrix material is one of epoxy resin, phenolic resin and polyester resin.

6. The method of constructing a prepreg type pipe thermal insulation apparatus according to claim 1, wherein: the method comprises the following specific steps:

1) a heat insulation mechanism (11) is laid along the outer wall of the pipeline main body, and the sheet heat insulation pieces or the strip heat insulation pieces surround a cylinder with a continuous cylinder wall;

2) laying uncured prepreg outside the heat insulation mechanism (11) obtained in the step 1);

3) and 2) carrying out normal-temperature curing molding on the prepreg obtained in the step 2) or carrying out heating curing molding through construction equipment.

7. The method of constructing a prepreg type pipe thermal insulation apparatus according to claim 6, wherein: and 3) during heating, curing and molding in the step 3), one end of the prepreg is fixed on the surface of the heat insulation mechanism (11) when the uncured prepreg is laid, and the construction equipment heats and cures the laid prepreg from the fixed end of the prepreg along the pipeline body.

8. The method of constructing a prepreg type pipe thermal insulation apparatus according to claim 6, wherein: the temperature of curing molding is 25-160 ℃.

9. The construction equipment according to any one of claims 6 to 8, wherein: the construction equipment comprises a barrel (1), and a telescopic mechanism and a heating mechanism which are connected to the barrel (1), wherein the barrel (1) comprises a first barrel (101) and a second barrel (102) which are symmetrically arranged, the first barrel (101) and the second barrel (102) are two semi-cylindrical shells which are symmetrically arranged, the side walls of one side of the first barrel (101) and the other side of the second barrel (102) are hinged with each other, and the side walls of the other side of the first barrel (101) and the other side of the second barrel are fixed through bolts; the heating mechanism is driven by the barrel (1) to rotate at the outer wall of the laid prepreg and advance along the direction of the pipeline body, the prepreg is heated and cured on the surface of the prepreg by the heating mechanism, the heating mechanism comprises a plurality of heating rollers (2) and connecting columns (3) connected to the end faces of the heating rollers (2), the heating rollers (2) are further connected with a power supply (4), a temperature controller (5) and a rotating handle (6), and the heating mechanism is connected with the barrel (1) through the telescopic mechanism; the telescopic mechanism comprises a mounting seat (7) and a hydraulic rod (8), the hydraulic rod (8) is connected to the inner wall of the barrel body (1) through the mounting seat (7), and a through hole (9) for the connecting column (3) to pass through is reserved at the movable rod end of the hydraulic rod (8).

10. The construction equipment according to claim 9, wherein: the terminal surface of warming mill (2) is connected round platform (10) of the feeding of being convenient for, and the top surface of round platform (10) passes through spliced pole (3) are connected hydraulic stem (8), the generating line of round platform (10) is 5~15 with the contained angle of axle.

Technical Field

The invention belongs to the technical field of heat preservation, and particularly relates to a prepreg type pipeline heat preservation device, a construction method and construction equipment thereof.

Background

In the industrial production processes of petroleum, chemical industry, metallurgy, electric power and the like, high-temperature medium pipeline transportation, such as high-temperature high-pressure steam, exists. In the process of heat transfer, the heat preservation effect is poor, so that the heat loss along the way is serious, the great energy waste is caused, and the more serious result is that the heat loss along the way is too large, so that the temperature and the pressure of the tail end steam point cannot meet the requirements of the production process, and the product quality is influenced.

In recent years, with the development of heat insulation material technology, heat insulation structure technology of heat supply pipe network has also been developed correspondingly. At present, the heat-supply pipeline heat-insulating structure in China is in the forms of felt, double-layer tile, single-layer microporous calcium silicate tile and single-layer section bar, and the like, and the heat-insulating material generally selects rock wool (slag and cotton) and products thereof, glass wool and products thereof, hard molded microporous calcium silicate heat-insulating products, aluminum silicate wool and products thereof, and the like. The long-distance conveying pipeline usually adopts a heat insulation structure combining an inner-layer microporous calcium silicate tile and an outer-layer composite silicate felt soft material, but the inner-layer microporous calcium silicate tile and the outer-layer composite silicate felt soft material cannot form an organic whole, and the heat insulation structure is used at high temperature for a long time and is influenced by steam pressure fluctuation, hydraulic impact, artificial treading and other factors in the pipeline, so that the conditions of deformation, slippage and sinking of the heat insulation material exist, and the heat loss of the upper part of the heat insulation pipeline is increasingly serious. In addition, gaps exist at the butt joint of the multilayer sectional materials, and the gaps are increased after vibration, so that the heat insulation effect is greatly reduced. In addition, for the heat preservation structure form of the pipe shell, the joint is generally fixed by coating, and although the heat preservation material does not sink, the cracking of the joint of the heat preservation material is common, so that the heat loss is increased, and the heat preservation effect is gradually deteriorated along with the prolonging of the service time.

Disclosure of Invention

In order to solve the problems, the invention provides the prepreg type pipeline heat-insulating device, the construction method and the construction equipment thereof.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a prepreg type pipeline heat preservation device, wraps up in the outside of pipeline body, its characterized in that: the thermal insulation mechanism and the outer protection mechanism are sequentially arranged from inside to outside, the outer protection mechanism is a prepreg, and the prepreg is wrapped outside the outer protection mechanism and then is subjected to curing molding.

Further, a heat reflection mechanism is further arranged between the heat insulation mechanism and the outer protection mechanism, the heat reflection mechanism is one of copper foil, aluminum foil or heat reflection coating, and the heat reflection coating can be obtained commercially.

Further, thermal-insulated mechanism passes through the heat insulating part parcel in the outer wall of pipeline body, the heat insulating part is aerogel felt or heat preservation hose, the heat insulating part is still through corrosion-resistant layer parcel, the aerogel felt can be slice, strip or web-like aerogel felt, corrosion-resistant layer includes corrosion-resistant cloth or corrosion-resistant coating, corrosion-resistant cloth is one of teflon cloth, tetrafluoro cloth, polytetrafluoroethylene cloth, corrosion-resistant coating can obtain through the market purchase.

Further, the heat-preservation hose is a hose filled with heat-preservation and heat-insulation filler; the heat-insulating filler is one or a combination of more of aerogel powder, titanium dioxide particles, silicon dioxide particles, zinc oxide particles, hollow glass microspheres, muscovite powder, corundum powder, mullite powder, hollow phenolic resin microspheres and hollow carbon microspheres, and the hose is one of a rubber hose and a silica gel hose.

Further, the prepreg is a matrix material impregnated with reinforcing fibers, the reinforcing fibers are one of carbon fibers, glass fibers, aramid fibers, boron fibers, biological fibers, polyester fibers and polyamide fibers, and the matrix material is one of epoxy resin, phenolic resin and polyester resin.

A construction method of a prepreg type pipeline heat preservation device is characterized by comprising the following steps: the method comprises the following specific steps:

1) laying a heat insulation mechanism along the outer wall of the pipeline main body, wherein the sheet heat insulation pieces or the strip heat insulation pieces surround a cylinder with a continuous cylinder wall;

2) laying uncured prepreg outside the heat insulation mechanism obtained in the step 1);

3) and 2) carrying out normal-temperature curing molding on the prepreg obtained in the step 2) or carrying out heating curing molding through construction equipment.

Further, when the prepreg is heated, cured and molded in the step 4), one end of the prepreg is fixed on the surface of the heat insulation mechanism when the uncured prepreg is laid, and the construction equipment heats and cures the laid prepreg from the fixed end of the prepreg and along the pipeline body.

Furthermore, the curing and forming temperature is 25-160 ℃.

The construction equipment used by the construction method is characterized in that: the construction equipment comprises a barrel, a telescopic mechanism and a heating mechanism, wherein the telescopic mechanism and the heating mechanism are connected to the barrel, the barrel comprises a first barrel and a second barrel which are symmetrically arranged, the first barrel and the second barrel are two semi-cylindrical shells which are symmetrically arranged, the side walls of one side of the first barrel and one side of the second barrel are hinged with each other, and the side wall of the other side of the first barrel and the side wall of the second barrel are fixed through bolts; the heating mechanism is driven by the barrel to rotate at the outer wall of the laid prepreg and move along the direction of the pipeline body, the prepreg is heated and cured on the surface of the prepreg by the heating mechanism, the heating mechanism comprises a heating roller and two connecting columns respectively connected to the end face of the heating roller, the heating roller is further connected with a power supply and a temperature controller, and the heating mechanism is connected with the barrel through the telescopic mechanism; the telescopic mechanism comprises a mounting seat and a hydraulic rod, the hydraulic rod is connected to the inner wall of the barrel through the mounting seat, and a through hole for the connecting column to penetrate through is reserved at the movable rod end of the hydraulic rod.

Further, the end face of the heating roller is connected with the round table convenient for feeding, the top surface of the round table is connected with the hydraulic rod through the connecting column, and the included angle between a bus of the round table and the shaft is 5-15 degrees.

The invention has the beneficial effects that:

1. according to the prepreg type heat preservation device, the external protection mechanism is firstly wrapped by the uncured prepreg, and then the prepreg is cured and molded after the wrapping is finished, so that the prepreg generates certain strength after being cured, and the mechanical property of the whole pipeline heat preservation device can be improved; the heat insulation mechanism is directly coated or wound on the outer wall of the pipeline body through the heat insulation piece, so that the heat insulation effect is good;

2. the prepreg has strong designability, and can be subjected to lamination design according to the requirements of the thickness and the mechanical property of an external protection mechanism required by a pipeline thermal insulation device under different environmental conditions, so that the obtained external protection mechanism can adapt to different environmental requirements; the construction method of directly curing at normal temperature after on-site coating or heating and curing through construction equipment can also simplify construction steps, an outer protection mechanism attached to the heat insulation mechanism can be obtained without additional fixing pieces, no installation gap exists, and meanwhile, construction time is saved.

Drawings

FIG. 1 is a schematic structural view of a pipe insulation apparatus;

FIG. 2 is a schematic view of a construction apparatus;

FIG. 3 is a mating view of the first barrel and the second barrel;

FIG. 4 is a view of the first cylinder in cooperation with the heating mechanism and the telescopic mechanism;

FIG. 5 is a schematic structural view of a heating mechanism;

FIG. 6 is a schematic structural view of the telescoping mechanism;

fig. 7 is a schematic structural diagram of a hose filled with an insulating material.

Wherein, each reference number in the figure is: 1. a barrel; 101. a first cylinder; 102. a second cylinder; 2. a heating roller; 3. connecting columns; 4. a power source; 5. a temperature controller; 6. rotating the handle; 7. a mounting seat; 8. a hydraulic lever; 9. a through hole; 10. a circular truncated cone; 11. a heat insulation mechanism; 12. a heat reflection mechanism; 13. an outer protection mechanism; 14. heat preservation and insulation materials; 15. a hose.

Detailed Description

In order that those skilled in the art will be able to better understand the technical solutions provided by the present invention, the following description is provided in connection with specific embodiments.

Example 1

Fig. 1 is a schematic structural diagram of a pipeline heat preservation device, and the heat preservation device is wrapped outside a pipeline body to be heat preserved, and specifically includes a heat insulation mechanism 11, a heat reflection mechanism 12 and an outer protection mechanism 13, which are arranged from inside to outside, wherein the heat insulation mechanism 11 and the outer protection mechanism 13 are both arranged in a manner of directly wrapping a sheet material or wrapping a strip material after being wound. The sheet heat insulation piece adopted by the heat insulation mechanism 11 is a sheet aerogel felt, and the aerogel felt is coated with corrosion-resistant paint around the aerogel felt for protection in the using process. Outer protection machanism 13 is the prepreg layer through the solidification, the prepreg is the matrix material through the reinforcing fiber flooding, wherein the reinforcing fiber is one of carbon fiber, glass fiber, aramid fiber, boron fiber, biological fiber, polyester fiber, polyamide fiber, used matrix material polyester resin, in the use, specifically with uncured prepreg with the direct cladding of slice or set up in the outside of heat reflection machanism 12 with strip winding parcel mode, produce certain intensity after the solidification shaping, can promote holistic pipeline heat preservation device's mechanical properties.

The construction method comprises the following specific steps:

1) laying a heat insulation mechanism 11 along the outer wall of the pipeline main body, wherein the sheet heat insulation pieces or the strip heat insulation pieces surround a cylinder with a continuous cylinder wall; when the heat insulation mechanism 11 is made of aerogel felt, the periphery of the aerogel felt is coated with corrosion-resistant coating for protection in advance, and the corrosion-resistant coating is wrapped after being dried and solidified firmly;

2) laying a heat reflection mechanism 12 outside the heat insulation mechanism 11 obtained in the step 1);

3) laying uncured prepreg outside the heat reflection mechanism 12 obtained in the step 2);

4) the uncured prepreg in the step 3) is directly cured and molded outside the heat reflecting mechanism 12.

The prepreg is prepared by storing at low temperature (usually below 4 ℃), wherein the matrix material of the prepreg is an unsaturated polyester material added with an initiator and an accelerant, the initiator is benzoyl peroxide, the accelerant is N, N-dimethylaniline, the reinforcing fiber can be one of carbon fiber, glass fiber, aramid fiber, boron fiber, biological fiber, polyester fiber and polyamide fiber according to the strength requirement and the difference of the budget of a pipeline heat-insulating device. When the prepreg is used, the prepreg is taken out from the low-temperature environment and is quickly wound on the outside of the heat reflection mechanism 12 (corresponding to step 3)), and the wound prepreg gradually approaches to normal temperature and is cured and molded at the normal temperature.

Example 2

The pipeline heat preservation device comprises a heat insulation mechanism 11, a heat reflection mechanism 12 and an outer protection mechanism 13 which are arranged from inside to outside. The heat insulation mechanism 11 can be wrapped by winding a hose 15 filled with a heat insulation material 14, the heat insulation material 14 in the hose 15 filled with the heat insulation material 14 comprises one or a combination of aerogel powder, titanium dioxide particles, silica particles, zinc oxide particles, hollow glass microspheres, muscovite powder, corundum powder, mullite powder, hollow phenolic resin microspheres and hollow carbon microspheres, the hose 15 is one of hoses such as a rubber hose and a silica gel hose, and the outer wall of the hose 15 can be wrapped with a corrosion-resistant step or coated with a corrosion-resistant coating to realize corrosion-resistant protection. Outer protection machanism 13 is the prepreg layer through heating curing, and the prepreg is glass fiber reinforcement epoxy preimpregnation material, specifically sets up uncured prepreg in the outside of heat reflection machanism 12 with the direct cladding of slice or with strip winding parcel mode with the prepreg of earlier, and later rethread construction equipment carries out heating curing, produces certain intensity, can promote holistic pipeline heat preservation device's mechanical properties.

The construction method comprises the following specific steps:

1) a hose 15 serving as a heat insulation mechanism 11 is wound along the outer wall of the pipeline main body to form a cylinder shape with a continuous cylinder wall;

2) laying a heat reflection mechanism 12 outside the heat insulation mechanism 11 obtained in the step 1);

3) coating the heat reflecting mechanism 12 obtained in the step 2) with an uncured glass fiber reinforced epoxy resin prepreg, fixing one end of the prepreg on the surface of the heat reflecting layer when coating the uncured prepreg, and preferably, continuously and seamlessly laying the prepreg;

4) and (3) keeping a heating mechanism of the construction equipment at a certain temperature, rotating at the outer wall of the laid uncured prepreg and advancing along the direction of the pipeline body, moving and heating the surface of the prepreg laid in the step 3) through the construction equipment, and heating and curing the prepreg at the heating and curing temperature of 130-140 ℃ to obtain the prepreg type pipeline heat preservation device. And during heating and curing, the construction equipment starts from one fixed end of the prepreg and heats and cures the laid prepreg along the pipeline body.

Fig. 2 and 3 are schematic structural views of construction equipment; the construction equipment in the step 4) comprises a barrel body 1, and a telescopic mechanism and a heating mechanism which are connected to the barrel body 1, wherein the barrel body 1 comprises a first barrel body 101 and a second barrel body 102 which are symmetrically arranged, the first barrel body 101 and the second barrel body 102 are two semi-cylindrical shells which are symmetrically arranged, the side walls of one side of the first barrel body 101 and the side wall of the other side of the second barrel body 102 are hinged with each other, and the side walls of the other side of the first barrel body 101 and the side wall of the other side of the second barrel body 102 are fixed through bolts; FIG. 5 is a schematic structural diagram of a heating mechanism, the heating mechanism comprises a plurality of heating rollers 2 and connecting columns 3 connected to the end faces of the heating rollers 2, one end portions of the heating rollers 2 are connected with a circular table 10 convenient for prepreg to enter construction equipment, the top surface of the circular table 10 is connected with hydraulic rods 8 through the connecting columns 3, included angles between buses and shafts of the circular table 10 are 5-15 degrees, and the inclined planes reserved on the side surfaces of the circular table 10 face are used for buffering prepreg space which just enters the construction equipment, so that uncured prepreg can enter smoothly, and the prepreg is prevented from being blocked at the construction equipment; the heating roller 2 can be an electric heating roller 2, the electric heating roller 2 is further connected with a power supply 4, a temperature controller 5 and a rotating handle 6, the electromagnetic heating roller 2 with better precision and supporting facilities thereof can be selected, and the supporting facilities such as the power supply 4 and the temperature controller 5 are further fixed on the outer surface of the barrel body 1, so that the heating roller can rotate along with the rotation of the barrel body 1, and the maneuverability of the heating roller is improved. The heating mechanism is connected with the cylinder body 1 through a telescopic mechanism. Fig. 6 is a schematic structural diagram of the telescopic mechanism, the telescopic mechanism includes a mounting seat 6 and a hydraulic rod 8, the hydraulic rod 8 is connected to the inner wall of the barrel 1 through the mounting seat 6, and a through hole 9 for the connecting column 3 to pass through is reserved at the movable rod end of the hydraulic rod 8.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Example 3

The pipeline heat preservation device is integrally wrapped outside the pipeline body, and the heat insulation mechanism 11, the heat reflection mechanism 12 and the outer protection mechanism 13 are all in a cylindrical shape with continuous outer walls. The heat insulation mechanism 11 is wound by using a strip-shaped heat insulation piece, the strip-shaped heat insulation piece is a strip-shaped aerogel felt which can be a cylindrical strip or a rectangular strip, the strip-shaped aerogel felt is a common rectangular strip, and the strip-shaped aerogel felt is coated with corrosion-resistant paint around the strip-shaped aerogel felt for protection in the using process. The outer protection mechanism 13 is a cured carbon fiber reinforced phenolic resin prepreg.

A preparation method of a prepreg high-efficiency heat insulation pipeline comprises the following steps:

1) coating corrosion-resistant paint on the periphery of the strip aerogel felt, and then wrapping the pretreated aerogel felt heat-insulating layer on the outer side of the pipeline main body to obtain a heat-insulating mechanism 11;

2) coating a heat reflection mechanism 12 on the outer side of the heat insulation mechanism 11 obtained in the step 1);

3) winding uncured carbon fiber reinforced phenolic resin prepreg on the end part of the structure obtained in the step 2) along the length direction of the pipeline body;

4) and (4) simultaneously arranging movable construction equipment at the end part of the structure in the step (3), wherein the construction equipment is the same as that of the embodiment 2. And (3) laying carbon fiber reinforced phenolic resin prepreg while heating and curing the prepreg along the length direction of the pipeline body by the construction equipment, and obtaining the required prepreg high-efficiency heat-insulation pipeline after curing.

The temperature of a heating roller 2 arranged in the construction equipment is controlled to be 160 ℃, and the uncured carbon fiber reinforced phenolic resin prepreg is cured under the rolling and high-temperature effects of the heating roller 2. Through construction equipment along pipeline length direction realize laying uncured preimpregnation material while heating curing, set up the warming mill, can play plastic tensile effect to preimpregnation material, can make its solidification again, make the better subsides of outer protection machanism by preimpregnation material preparation cover in pipeline insulation construction's the outside, obtain outer protection machanism 13 structure level, practice thrift construction time.

Example 4

The pipeline heat preservation device wraps the outside of a pipeline body needing heat preservation, and specifically comprises a heat insulation mechanism 11 and an outer protection mechanism 13 which are arranged from inside to outside, and does not comprise a heat reflection mechanism 12 and corrosion-resistant coating outside the aerogel felt. The heat preservation device and the construction method of the pipeline are the same as those of the embodiment 1.

Example 5

The pipeline heat preservation device wraps the outside of a pipeline body needing heat preservation, and specifically comprises a heat insulation mechanism 11, a heat reflection mechanism 12 and an outer protection mechanism 13 which are arranged from inside to outside, and does not comprise corrosion-resistant coating outside the aerogel felt. The heat preservation device and the construction method of the pipeline are the same as those of the embodiment 1.