CN112483758A

CN112483758A - Modular detachable jacket

Info

Publication number: CN112483758A
Application number: CN202011415328.1A
Authority: CN
Inventors: 刘虎; 胡友超
Original assignee: Shanghai Bozhen Energy Environmental Protection Technology Co ltd
Current assignee: Shanghai Bozhen Energy Environmental Protection Technology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-03-12

Abstract

The invention discloses a modular detachable jacket, which consists of a heat conducting piece and a heat tracing piece, wherein the heat tracing piece is embedded into the heat conducting piece, the heat conducting piece is of a cover pasting structure, the inner surface of the heat conducting piece is almost completely matched with the outline shape of a heat traced piece, the main body of the heat traced piece is wrapped in the heat conducting piece, and the joint of the heat conducting piece and the heat traced piece is filled with a soft heat conducting material. The modular detachable jacket of the invention wraps the heat tracing piece like an outer sleeve, further reduces the gap between the heat conducting piece and the heat tracing piece through the soft heat conducting material, has large contact area, high heat transfer efficiency and uniform heat tracing without dead zones.

Description

Modular detachable jacket

Technical Field

The invention relates to the field of heat tracing engineering, in particular to a modularized detachable jacket.

Background

The heat tracing is an indirect heating mode adopted outside or inside the pipe for preventing the fluid in the pipe from condensing, generating condensate or increasing viscosity due to temperature reduction and keeping the temperature of the fluid in the pipe stable, and the common modes are external heat tracing and jacketed pipe heat tracing. The external heat tracing is also called parallel steam pipe heat tracing, one or more steam heat tracing circular pipes are arranged on a heat tracing piece, and the heat tracing circular pipes are the most applied form at present, but a certain gap is usually formed between the heat tracing piece and the heat tracing pipe due to the existence of thermal expansion, the heat transfer area is small, the heat transfer mode mainly adopts air convection and heat radiation, the heat transfer efficiency is low, and the heat tracing circular pipes are not suitable for heat tracing of viscous and easily-crystallized fluid. .

The traditional jacketed pipe heat tracing is to weld a heat tracing pipe outside the process pipeline integrally, heat the inner process pipeline in a large area, the jacketed pipe has higher heat transfer efficiency, low heat loss and good heat tracing uniformity, and is suitable for viscous and easily-crystallized materials with higher heat tracing requirements, such as heavy oil, asphalt, urea, sulfur and the like. While the traditional jacket brings many advantages, the traditional jacket also brings many problems due to the structure of the traditional jacket, and the traditional jacket mainly has the following points: firstly, the welding workload is large, the manufacturing period is long, and the integral schedule of a project is influenced; secondly, the welding quality is difficult to control, and no effective detection means exists; thirdly, the jacket is welded on the equipment body, so that the risk of material channeling is high, leakage points are not easy to check, and the maintenance cost is high; fourthly, the construction of non-standard clamping sleeves of valves, pumps, instruments and the like is complex and the price is high.

For the reasons, the modular detachable jacket is invented to replace the traditional welding jacket, and is necessary to be used for heat tracing of special parts such as valves, pumps, instruments, flanges and the like.

Disclosure of Invention

The invention provides a modular detachable jacket, which solves the problems of long manufacturing period, high cost and high installation and maintenance difficulty of the traditional jacket pipe.

The invention provides a modular detachable jacket which is characterized in that the jacket is composed of a heat conducting piece and a heat tracing piece, the heat tracing piece is embedded into the heat conducting piece, the heat conducting piece is of a covering structure, the inner surface of the heat conducting piece is completely matched with the outline shape of the heat traced piece, the main body of the heat traced piece is wrapped in the heat conducting piece, a soft heat conducting material is arranged on the heat conducting piece, the joint of the heat conducting piece and the heat traced piece is filled with the soft heat conducting material, and the heat tracing piece is provided with a heat tracing piece inlet and outlet; the modular detachable jacket is wrapped by the heat tracing piece like an 'outer sleeve', and the heat tracing medium circulates through the inlet and the outlet of the heat tracing piece to compensate the heat loss of the heat tracing piece.

Preferably, the jacket is formed by one or more parts which are connected through bolts;

preferably, the heat conductivity coefficient of the soft heat conduction material on the heat conduction member is more than 10W/(m.k);

preferably, the heat conducting member is manufactured by casting or digital scanning printing.

Preferably, the heat conducting member has a thermal conductivity of more than 80W/(m.K), a density of less than 10.0g/cm3,

preferably, the heat medium in the heat tracing member is one of hot water, steam, heat conducting liquid and heat conducting gas.

Preferably, the pressure resistance of the heat tracing piece is more than 0.5MPa, and the temperature resistance is more than 100 ℃;

preferably, the heat tracing piece is one or a combination of steel round pipe, square pipe and semi-round pipe.

The space between the jackets or the space between the jackets and other heat tracing equipment is connected by a hard pipe or a metal corrugated pipe; the preferable material of the heat conducting piece is aluminum; the heat traced members are valves, pumps, meters, fittings, flanges and other components.

The invention has the beneficial effects that:

(1) the modular detachable jacket is wrapped by the heat tracing piece like an outer sleeve, so that the contact area is large, the heat transfer efficiency is high, and the heat tracing uniformity is ensured without dead zones.

(2) Compared with the traditional welding type jacket, the modular detachable jacket avoids welding on the body of the heat tracing piece, is more convenient to manufacture and install, and can effectively shorten project construction period.

(3) The risk of the heat tracing medium and the heat traced medium crossing each other is avoided, and the safety is high.

(4) The manufacturing and maintenance cost is low, the subsequent maintenance is simple, and the number of spare parts is reduced.

Drawings

Fig. 1 is a schematic view of an external surface of an embodiment of the modular removable jacket of the present invention.

Fig. 2 is a schematic view of an inner surface of an embodiment of the modular removable jacket of the present invention.

FIG. 3 is a schematic view of a heat trace of an embodiment of the modular removable jacket of the present invention.

FIG. 4 is a schematic view of a second heat trace of an embodiment of the modular removable jacket of the present invention.

Wherein, the reference numbers:

the heat conducting device comprises a heat conducting piece 1, a heat tracing piece 2, a heat medium inlet and outlet 3 and a soft heat conducting material 4.

Detailed Description

For better illustrating the objects, aspects and advantages of the present invention, the following detailed description of the embodiments of the present invention is only a part of the embodiments of the present invention, and other embodiments obtained by those skilled in the art without inventive efforts shall fall within the scope of the present invention.

Example 1

The present example provides a modular removable jacket, schematically illustrated in fig. 1, with heat trace elements schematically illustrated in fig. 3. In the embodiment, the heat tracing piece is a flanged valve; the heat conducting pieces 1 are cast by aluminum alloy, the inner surfaces of the heat conducting pieces are completely matched with the outline shape of the valve, and the two heat conducting pieces 1 are connected by using a screw to be completely wrapped by the heat tracing piece; the heat tracing piece 2 is a special-shaped stainless steel square tube and is embedded into the heat conducting piece 1, and the heat tracing piece 3 is an inlet and an outlet of heat tracing medium steam of the heat tracing pipe; the joint of the heat conducting piece 1 and the heat tracing piece is filled with a soft heat conducting material 4, and the heat conducting coefficient of the soft heat conducting material 4 is larger than 10W/(m.K).

In the embodiment, the heat conductivity coefficient of the heat conducting member 1 is as high as 237W/(m.K), heat tracing medium steam passes through the heat tracing member, the heat tracing member 2 firstly transfers heat to the heat conducting member 1 at the periphery, and the strong heat conducting function of the heat conducting member 1 enables the heat to rapidly penetrate through the whole heat conducting member and be transferred to the heat tracing member; the heat conducting piece 1 and the soft heat conducting material 4 filled between the heat tracing pieces can extrude away air, and the heat conducting coefficient of the soft heat conducting material 4 is far higher than that of the air, so that the contact area and the heat conducting coefficient of the heat conducting piece 1 and the heat tracing pieces are effectively increased, and the hot starting performance is equivalent to that of a traditional welding jacket.

Example 2

The present example provides a modular detachable jacket which is substantially the same as the present example except that the heat tracing member 2 is embedded in the heat conductive member 1 using a circular steel pipe as shown in fig. 4, and the heat tracing performance equivalent to that of the present example can be achieved.

In conclusion, the invention has large heat transfer area, high heat conductivity coefficient, uniform heat tracing and no dead zone, has the heat starting performance equivalent to that of the traditional jacket, can replace the jacket for heat tracing of viscous and easily crystallized media, and is particularly suitable for irregular parts such as valves, pumps, instruments, flanges and the like.

References in the specification to "an embodiment," "the embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not intended to refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Where certain terms are used in the specification and following claims to refer to particular components or features, those skilled in the art will understand that various terms or numbers may be used by a skilled user or manufacturer to refer to the same component or feature. This specification and the claims that follow do not intend to distinguish between components or features that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "coupled" is intended to encompass any direct or indirect coupling means.

The present invention is capable of other embodiments, and any variations and modifications within the spirit and scope of the present invention will be apparent to those skilled in the art from this disclosure.

Claims

1. The modular detachable jacket is characterized in that the jacket is composed of a heat conducting piece and a heat tracing piece, the heat tracing piece is embedded into the heat conducting piece, the heat conducting piece is of a covering structure, a soft heat conducting material is arranged on the heat conducting piece, and a heat tracing piece inlet and outlet are formed in the heat tracing piece.

2. The modular removable jacket according to claim 1, wherein said jacket is bolted from one or more pieces.

3. The modular removable jacket according to claim 1, wherein said soft thermally conductive material on said thermally conductive member has a thermal conductivity greater than 10W/(m-k).

4. The high efficiency heat tracing pipe of claim 1 or 3 wherein said heat conducting member is manufactured by casting or digital scanning printing.

5. The high efficiency heat tracing pipe of claim 4, wherein said heat conducting member has a thermal conductivity of more than 80W/(m-K) and a density of less than 10.0g/cm³。

6. The modular removable jacket according to claim 1, wherein the heat tracing medium in said heat tracing member is one of hot water, steam, heat conducting liquid, and heat conducting gas.

7. The modular removable jacket according to claim 1 or 6, wherein said heat tracing member is resistant to pressure of greater than 0.5MPa and to temperatures of greater than 100 ℃.

8. The modular removable jacket according to claim 1 or 6, wherein the heat tracing member is a combination of one or more of steel round tubes, square tubes, and semi-round tubes.