Preheating assembly and heating pipeline

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By designing detachable preheating components and warm-up pipe structure, the problems of poor sealing and inability to move the pipeline preheating equipment are solved, and efficient and safe preheating and heating of the pipeline are achieved.

CN223177602UActive Publication Date: 2025-08-01ZHEJIANG ZHENENG ELECTRIC POWER CO LTD XIAOSHAN POWER PLANT

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Patent Information

Application Number: CN202422595372.5
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-10-28
Publication Date: 2025-08-01
Estimated Expiration: 2034-10-28

AI Technical Summary

Technical Problem

The sealing between the existing pipeline preheating equipment and the pipeline is poor, which is very easy to cause steam leakage, and the preheating equipment cannot move, so that heating of the pipeline cannot be achieved.

Method used

A preheating assembly is designed, including a fixing cover and connecting ends, which enables removable fixation through rotary members and connectors, combines the sealing gasket and the convex ring structure to improve sealing, and preheat the pipe through a high-temperature steam heating chamber.

Benefits of technology

The movable preheating of the pipe is realized, the sealing is improved, the steam leakage is avoided, and the heating can be carried out at different locations of the pipe is improved, which improves the heating efficiency and safety.

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Abstract

The utility model discloses a preheating assembly and a heating machine pipeline, and relates to the technical field of pipeline preheating, the preheating assembly comprises a wrapping unit, the wrapping unit comprises a fixing cover, a heating cavity formed in the fixing cover and a connecting end installed on the fixing cover; the fixing unit comprises a first clamping plate, a second clamping plate, a rotating piece and a connecting piece, wherein the rotating piece and the connecting piece are arranged at the connecting point of the first clamping plate and the second clamping plate. The pipeline preheating device has the advantages that the two fixing covers are wrapped and fixed to the outer side of a pipeline, then high-temperature steam is introduced, the steam flows through the heating cavity, the temperature in the heating cavity is increased, heating of the pipeline at the wrapped position is achieved, preheating of the pipeline is achieved, the pipeline preheating device can be detachably installed at different positions of the pipeline, and the pipeline preheating device is convenient to use. And heating at different positions is realized.

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Description

Technical Field

[0001] The utility model relates to the technical field of pipeline preheating, in particular to a preheating component and a warm-up pipeline. Background Art

[0002] The cold start of a steam turbine has a great impact on the generation of cylinder cracks. Without changing the impulse parameters of the cold-start steam turbine, if steam is directly introduced into the steam turbine, although the steam can heat the steam turbine, the steam may drive the steam turbine to work. Therefore, through preheating technology, the pipeline is preheated in advance, and the heat in the pipeline is introduced into the cylinder to increase the cylinder temperature first. When the steam turbine is impulsed, the temperature difference between the impulsing steam temperature and the cylinder temperature is reduced, and the impact on metal components is reduced. However, the sealing performance between the existing pipeline preheating equipment and the pipeline is poor, and steam leakage is very likely to occur. Moreover, the existing pipeline preheating equipment is generally fixed by welding or fixed to the pipeline by screws, and cannot be moved, so it is impossible to heat any part of the pipeline. Summary of the Utility Model

[0003] In view of the above-mentioned problems in the prior art, the present utility model is proposed.

[0004] The purpose of the present utility model is to provide a preheating component, aiming to solve the problem that the existing pipeline preheating equipment is generally fixed by welding or fixed to the pipeline by screws, and cannot be moved, so it is impossible to heat any part of the pipeline.

[0005] To solve the above technical problems, the present utility model provides the following technical solutions: A preheating component includes a wrapping unit, which includes a fixed cover, a heating cavity opened in the fixed cover, and a connection end installed on the fixed cover;

[0006] A fixing unit, which includes a first clamping plate and a second clamping plate, and a rotating part and a connecting part arranged at the connection point of the first clamping plate and the second clamping plate.

[0007] As a preferred solution of the preheating component of the present utility model, wherein: the number of the fixed covers is two, and the two heating cavities form a sealed cavity in the use state.

[0008] As a preferred solution of the preheating component of the present utility model, wherein: there are two groups of connection ends installed on the fixed cover, and any two adjacent groups of connection ends are connected by a connecting pipe.

[0009] As a preferred solution of the preheating component of the present utility model, wherein: a U-shaped pipe is arranged between the two connection ends on the same fixed cover.

[0010] As a preferred embodiment of the preheating assembly of the present utility model, wherein: the rotating member includes a step formed at the same end of the first clamping plate and the second clamping plate, and a hinge provided on the step.

[0011] As a preferred embodiment of the preheating assembly of the present utility model, wherein: the connecting member includes a mounting plate fixedly provided at the same end of the first clamping plate and the second clamping plate, a bolt passing through the mounting plate, and a nut threadedly provided on the bolt.

[0012] As a preferred embodiment of the preheating assembly of the present utility model, wherein: limiting grooves adapted to the first clamping plate and the second clamping plate are formed at both ends of the fixed cover.

[0013] As a preferred embodiment of the preheating assembly of the present utility model, wherein: sealing gaskets are provided on the inner sides of both ends of the fixed cover.

[0014] As a preferred embodiment of the preheating assembly of the present utility model, wherein: first convex rings are provided on the inner walls of both ends of the fixed cover.

[0015] The beneficial effects of the preheating assembly of the present utility model are as follows: The two fixed covers are wrapped and fixed on the outer side of the pipeline, and then high-temperature steam is introduced. By the steam flowing through the heating cavity, the temperature in the heating cavity is increased, so as to realize the heating of the pipeline at the wrapped part. It not only realizes the preheating of the pipeline, but also can be disassembled and installed at different positions of the pipeline to realize the heating of different positions.

[0016] The purpose of the present utility model is to provide a warm-up pipeline, aiming to solve the problem that the sealing performance between the existing pipeline preheating equipment and the pipeline is poor, and steam leakage is extremely likely to occur.

[0017] To solve the above technical problems, the present utility model provides the following technical solution: A warm-up pipeline includes a pipeline body, and a second convex ring is provided on the outer surface of the pipeline body, and the first convex ring and the second convex ring are arranged alternately.

[0018] The beneficial effects of the warm-up pipeline of the present utility model are as follows: By providing a second convex ring at the sealing joint of the pipeline body, the raised part of the second convex ring will squeeze the sealing gasket, thereby increasing the sealing performance, and the first convex ring and the second convex ring are arranged alternately, and the intersection of the two will also be squeezed, further improving the sealing performance between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0020] Figure 1 It is a schematic structural diagram of a preheating component.

[0021] Figure 2 It is a sectional view of the structure of the preheating component.

[0022] Figure 3 It is a schematic diagram of the internal structure of the preheating component.

[0023] Figure 4 It is a schematic structural diagram of a fixing unit.

[0024] Figure 5 It is a schematic structural diagram of a warm-up pipeline Specific implementation manners

[0025] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given in conjunction with the accompanying drawings of the specification.

[0026] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate from or mutually exclusive of other embodiments.

[0028] Embodiment 1

[0029] Referring to Figures 1 to 4 , this is the first embodiment of the present utility model. This embodiment provides a preheating component, including a wrapping unit 100, which includes a fixing cover 101, a heating cavity 102 opened in the fixing cover 101, and a connecting end 103 installed on the fixing cover 101;

[0030] A fixing unit 200, including a first clamping plate 201 and a second clamping plate 202, and a rotating member 203 and a connecting member 204 provided at the connection point of the first clamping plate 201 and the second clamping plate 202.

[0031] The number of the fixing covers 101 is two, and the two heating cavities 102 form a sealed cavity in the use state.

[0032] There are two sets of connection ends 103 installed on the fixed cover 101, and any two adjacent sets of connection ends 103 are connected by a connecting pipe.

[0033] It should be noted that the wrapping unit 100 is composed of two fixed covers 101, and the inner cavity of the fixed cover 101 is hollow to form a heating cavity 102. When the two fixed covers 101 are wrapped around the heating pipe, the heating cavity 102 and the outer wall of the pipe form a sealed cavity. There are two connection ends 103 provided on each fixed cover 101. Connect two adjacent connection ends 103 on the fixed cover 101, and then connect the intake pipe and the outlet pipe to the remaining two connection ends 103 respectively to form a closed circuit, and the preheating effect is achieved by the steam flowing through the heating cavity 102.

[0034] Furthermore, the rotating member 203 includes a step 203a formed at the same end of the first clamping plate 201 and the second clamping plate 202, and a hinge 203b provided on the step 203a.

[0035] Furthermore, the connecting member 204 includes a mounting plate 204a fixedly provided at the same end of the first clamping plate 201 and the second clamping plate 202, a bolt 204b passing through the mounting plate 204a, and a nut 204c threadedly arranged on the bolt 204b.

[0036] Furthermore, limiting grooves 101a adapted to the first clamping plate 201 and the second clamping plate 202 are provided at both ends of the fixed cover 101.

[0037] Furthermore, sealing gaskets 101b are provided on the inner sides of both ends of the fixed cover 101.

[0038] Furthermore, first convex rings 101c are provided on the inner walls of both ends of the fixed cover 101.

[0039] It should be noted that the rotating member 203 has a step 203a formed on the same side of the first clamping plate 201 and the second clamping plate 202. The step 203a can reduce the thickness of the connection part, and then the hinge 203b is fixed by screws to realize the rotational connection between the first clamping plate 201 and the second clamping plate 202. By rotating the first clamping plate 201 and the second clamping plate 202, the through holes on the two mounting plates 204a are aligned, the bolt 204b is passed through the through holes, and the nut 204c is tightened to realize the closing of the first clamping plate 201 and the second clamping plate 202. The limiting grooves 101a can not only assist in alignment when installing the fixed cover 101, but also prevent the first clamping plate 201 and the second clamping plate 202 from shifting in position during the fixing process.

[0040] The inner side of the fixed cover 101 is filled with a gasket 101b to increase the sealing performance between the fixed cover 101 and the pipeline. Moreover, a plurality of first convex rings 101c are arranged on the inner wall of the fixed cover 101. When installing, the first convex rings 101c squeeze the gasket 101b, and a plurality of sealing contact lines are added to the gasket 101b, so that the sealing effect will be better.

[0041] During use, the two fixed covers 101 are clamped on the heating pipeline. Then, the limit grooves 101a of the fixed covers 101 are aligned. Next, the second clamping plate 202 is inserted into the limit groove 101a. The first clamping plate 201 is rotated. While being inserted into the limit groove 101a, the two mounting plates 204a are aligned. The bolt 204b is passed through the mounting plates 204a, and then the nut 204c is tightened to complete the installation. When in use, two adjacent connection ends 103 on the fixed cover 101 are connected. Then, the air inlet pipe and the air outlet pipe are respectively connected to the remaining two connection ends 103 to form a closed circuit. The preheating effect is achieved by the steam flowing through the heating cavity 102.

[0042] In summary, this structure can wrap and fix two fixed covers 101 on the outer side of the pipeline, and then introduce high-temperature steam. The temperature in the heating cavity 102 is increased by the steam flowing through the heating cavity 102, so as to heat the pipeline at the wrapped position. It not only realizes the preheating of the pipeline, but also can be disassembled and installed at different positions of the pipeline to realize the heating of different positions.

[0043] Embodiment 2

[0044] Refer to Figures 1 to 4 , the second embodiment of the present invention. This embodiment further provides a preheating component, including a wrapping unit 100, which includes a fixed cover 101, a heating cavity 102 opened in the fixed cover 101, and a connection end 103 installed on the fixed cover 101;

[0045] A fixing unit 200, which includes a first clamping plate 201 and a second clamping plate 202, and a rotating member 203 and a connecting member 204 arranged at the connection point of the first clamping plate 201 and the second clamping plate 202.

[0046] The number of the fixed covers 101 is two, and the two heating cavities 102 form a sealed cavity in the use state.

[0047] The connection ends 103 installed on the fixed cover 101 are in two groups, and any two adjacent groups of connection ends 103 are connected by a connecting pipe.

[0048] Furthermore, a U-shaped pipe 103a is arranged between the two connection ends 103 on the same fixed cover 101

[0049] It should be noted that the wrapping unit 100 is composed of two fixed covers 101, and the inner cavity of the fixed cover 101 is hollow to form a heating cavity 102. When the two fixed covers 101 are wrapped around the heating pipeline, the heating cavity 102 and the outer wall of the pipeline form a sealed cavity. Each fixed cover 101 is provided with two connection ends 103. Connect two adjacent connection ends 103 on the fixed cover 101, and then connect the intake pipe and the outlet pipe to the remaining two connection ends 103 respectively to form a closed circuit. The preheating effect is achieved by steam flowing through the heating cavity 102;

[0050] A U-shaped pipe 103a is arranged in the heating cavity 102 and wrapped outside the pipeline. The steam heats the heating cavity 102 by flowing through the U-shaped pipe 103a, which can prevent the leakage of high-pressure steam. The leakage of steam may scald the operators beside.

[0051] During use, the two fixed covers 101 are clamped on the heating pipeline, then the limit grooves 101a of the fixed covers 101 are aligned, and then the second clamping plate 202 is clamped into the limit groove 101a. Rotate the first clamping plate 201. While clamping into the limit groove 101a, align the two mounting plates 204a. Pass the bolt 204b through the mounting plates 204a, and then tighten the nut 204c to complete the installation. During use, connect two adjacent connection ends 103 on the fixed cover 101, and then connect the intake pipe and the outlet pipe to the remaining two connection ends 103 respectively to form a closed circuit;

[0052] The steam flows through the U-shaped pipe 103a, then heats the heating cavity 102, and the heating cavity 102 heats the pipeline, thereby achieving the preheating effect.

[0053] In summary, by introducing high-pressure steam into the U-shaped pipe 103a, not only can the heating time of the steam in the heating cavity 102 be increased, but also the safety hazards caused by steam leakage can be avoided, and the maximum utilization of thermal energy can be achieved when the steam flows through the U-shaped pipe 103a.

[0054] Embodiment 3

[0055] Refer to Figures 1 to 5 , which is the third embodiment based on the second embodiment of the present invention. A warm-up pipeline includes a pipeline body 300. A second convex ring 301 is arranged on the outer surface of the pipeline body 300, and the first convex ring 101c and the second convex ring 301 are arranged alternately.

[0056] It should be noted that a second convex ring 301 is provided on the outer wall of the pipe body 300. The second convex ring 301 is arranged at the sealed connection with the external structure. When installing, the first convex ring 101c and the second convex ring 301 are staggered with each other, and a gasket 101b is added between them. The first convex ring 101c and the second convex ring 301 squeeze the gasket 101b alternately. At the staggered part of the first convex ring 101c and the second convex ring 301, being squeezed can increase the sealing performance between the fixing cover 101 and the pipe body 300.

[0057] During use, the fixing cover 101 is stuck on the pipe body 300, and then the fixing cover 101 is slid left and right to move the first convex ring 101c to form an intersection with the second convex ring 301. Then, the two fixing covers 101 are clamped by the fixing unit 200 to realize the sealed connection between the fixing cover 101 and the pipe body 300, preventing steam from leaking out.

[0058] In summary, by providing the second convex ring 301 at the sealed connection of the pipe body 300, the protruding part of the second convex ring 301 will squeeze the gasket 101b, thereby increasing the sealing performance. Moreover, the first convex ring 101c and the second convex ring 301 are staggered, and the staggered part between them will also be squeezed, further improving the sealing performance between the two.

[0059] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A preheating component, characterized in that: including, a wrapping unit (100), comprising a fixing cover (101), a heating cavity (102) opened in the fixing cover (101), and a connecting end (103) installed on the fixing cover (101); a fixing unit (200), comprising a first clamping plate (201) and a second clamping plate (202), and a rotating member (203) and a connecting member (204) arranged at the connection point of the first clamping plate (201) and the second clamping plate (202).

2. The preheating assembly according to claim 1, characterized in that: the number of the fixing covers (101) is two, and the two heating cavities (102) form a sealed cavity in the use state.

3. The preheating assembly according to claim 2, characterized in that: the connecting ends (103) installed on the fixing cover (101) are in two groups, and any two adjacent groups of the connecting ends (103) are connected by a connecting pipe.

4. The preheating assembly according to claim 3, characterized in that: a U-shaped pipe (103a) is arranged between the two connecting ends (103) on the same fixing cover (101).

5. The preheating assembly according to claim 2 or 4, characterized in that: the rotating member (203) comprises a step (203a) opened at the same end of the first clamping plate (201) and the second clamping plate (202), and a hinge (203b) arranged on the step (203a).

6. The preheating assembly according to claim 2 or 4, characterized in that: the connecting member (204) comprises a mounting plate (204a) fixedly arranged at the same end of the first clamping plate (201) and the second clamping plate (202), a bolt (204b) penetrating through the mounting plate (204a), and a nut (204c) threadedly arranged on the bolt (204b).

7. The preheating assembly according to claim 1, characterized in that: limiting grooves (101a) adapted to the first clamping plate (201) and the second clamping plate (202) are opened at both ends of the fixing cover (101).

8. The preheating assembly according to claim 1, characterized in that: sealing gaskets (101b) are arranged on the inner sides of both ends of the fixing cover (101).

9. The preheating assembly according to claim 8, characterized in that: first convex rings (101c) are arranged on the inner walls of both ends of the fixing cover (101).

10. A warm-up pipeline, characterized in that: including the preheating assembly according to any one of claims 1 to 9, and: a pipeline body (300), a second convex ring (301) is arranged on the outer surface of the pipeline body (300), and the second convex ring (301) and the first convex ring (101c) are arranged alternately.