Boiler main steam pipeline

Abstract

The utility model belongs to a boiler main steam pipeline in the technical field of power generation systems. The main steam pipeline comprises a first pipeline assembly (1) and a second pipeline assembly (2), a first pipeline assembly flange (3) is arranged at one end of the first pipeline assembly (1), a second pipeline assembly flange (4) is arranged at one end of the second pipeline assembly (2), a communicating part is connected between the first pipeline assembly flange (3) and the second pipeline assembly flange (4), and the communicating part comprises a connecting straight pipe (5) and a connecting bent pipe (6). According to the main steam pipeline of the boiler, after a superheater of the boiler is replaced, purging can be conveniently carried out, relevant parts do not need to be disassembled, and operation convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power generation system, more specifically, relate to a boiler main steam pipeline. BACKGROUND

[0002] According to the requirement of the starting trial operation and acceptance regulation of thermal power generation construction project, steam blowing needs to be carried out to the superheater after the boiler replaces the superheater tube bank, and only after the shooting is qualified, the steam is allowed to enter the steam turbine to do work and generate electricity.However, in the prior art, the power generation system has been installed, and the main steam is not designed with a temporary blowing pipeline, so that steam blowing cannot be carried out.

[0003] In the prior art, there is a technology named "steam turbine power generation steam pipeline system" with publication (announcement) number "CN203420748U", which comprises a steam pipeline group composed of a boiler, a steam pipeline and a valve on the steam pipeline and a steam turbine, the steam pipeline transports steam from the boiler to the steam turbine; the steam pipeline group comprises a high-temperature high-pressure steam pipeline group, a secondary high-temperature secondary high-pressure steam pipeline group and a medium-temperature medium-pressure steam pipeline group, the steam pipelines of each steam pipeline group are connected, and a temperature and pressure adjusting valve is arranged between the steam pipelines of two steam pipeline groups, and the two ends of the temperature and pressure adjusting valve are respectively connected with the steam pipelines and the valve of the corresponding steam pipeline group.

[0004] However, the technology does not involve the technical problems and technical solutions of the present application. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems that: in view of the defects of the prior art, a boiler main steam pipeline with simple structure can conveniently blow and shoot after replacing the superheater of the boiler, without the need of disassembling related parts, and the operation convenience is improved.

[0006] To solve the above technical problems, the utility model adopts the technical scheme that:

[0007] The utility model relates to a boiler main steam pipeline, the main steam pipeline comprises a first pipeline assembly and a second pipeline assembly, one end of the first pipeline assembly is provided with a first pipeline assembly flange, one end of the second pipeline assembly is provided with a second pipeline assembly flange, a connecting part is connected between the first pipeline assembly flange and the second pipeline assembly flange, and the connecting part comprises a connecting straight pipe and a connecting elbow.

[0008] One end of the connecting straight pipe is provided with a first connecting flange, and the other end of the connecting straight pipe is provided with a second connecting flange.

[0009] The connecting elbow comprises an elbow body and an elbow flange.

[0010] The first connecting flange at one end of the connecting straight pipe is connected with the first pipe assembly flange, and the second connecting flange of the connecting straight pipe is connected with the second pipe assembly flange.

[0011] When the boiler main steam pipeline is used for purging operation, the elbow flange of the connecting elbow pipe is connected with the first pipe assembly flange, and the other end of the elbow pipe body is bent downward.

[0012] The elbow pipe body and the first pipe assembly flange are in an acute angle or a straight angle.

[0013] The other end of the first pipe assembly is connected with the boiler, and the other end of the second pipe assembly is connected with the steam turbine room.

[0014] The elbow pipe body connected with the elbow pipe is connected with the purging pipe flange of the purging pipe through the elbow pipe body flange.

[0015] The technical scheme of the utility model, working principle and beneficial effect are as follows:

[0016] The boiler main steam pipeline, when the structure is set, the main steam pipeline is used for connecting the boiler and the steam turbine room, the main steam pipeline comprises a first pipe assembly and a second pipe assembly, one end of the first pipe assembly is provided with a first pipe assembly flange, one end of the second pipe assembly is provided with a second pipe assembly flange, and a distance exists between the first pipe assembly flange and the second pipe assembly flange, so that a connecting part can be connected between the first pipe assembly flange and the second pipe assembly flange, and the connecting part comprises a connecting straight pipe and a connecting elbow pipe. The connecting straight pipe and the connecting elbow pipe are respectively used for different operation conditions. After the boiler superheater is replaced, the replaced superheater needs to be subjected to gas purging operation, at this time, the connecting straight pipe is removed, the elbow flange of the connecting elbow pipe is connected with the first pipe assembly flange, the other end of the connecting elbow pipe is bent downward, the connecting purging pipeline of the connecting elbow pipe can be ventilated and subjected to purging operation. After the purging operation is completed, the connecting elbow pipe is removed, the first connecting flange at one end of the connecting straight pipe is connected with the first pipe assembly flange, a sealing washer is arranged between the two, the second connecting flange of the connecting straight pipe is connected with the second pipe assembly flange, and a sealing washer is arranged between the two, the first pipe assembly and the second pipe assembly are connected, the steam of the boiler can be reliably sent into the steam turbine room, and the steam turbine room can work normally. BRIEF DESCRIPTION OF DRAWINGS

[0017] The content expressed by each drawing of the specification and the marks in the drawings are briefly described as follows:

[0018] Figure 1 It is a structural schematic view of the boiler main steam pipeline.

[0019] Figure 2The utility model discloses a structure schematic drawing of boiler main steam pipeline.

[0020] Marked in the drawing respectively are: 1, first pipeline component;2, second pipeline component;3, first pipeline component flange;4, second pipeline component flange;5, connecting straight pipe;6, connecting elbow;7, first connecting flange;8, second connecting flange;9, elbow body;10, elbow flange;11, boiler;12, steam turbine room;13, elbow body flange;14, purging pipe fitting;15, purging pipe fitting flange;16, purging electric valve. DETAILED DESCRIPTION

[0021] The shape, structure, mutual position and connecting relationship between parts, the function and working principle of each component involved in the specific embodiment of the utility model are further explained in detail by the description of the embodiment with reference to the drawings:

[0022] As shown in the accompanying Figure 1 , accompanying Figure 2The utility model discloses a kind of boiler main steam pipelines, main steam pipeline includes first pipeline assembly 1 and second pipeline assembly 2, first pipeline assembly 1 one end is provided with first pipeline assembly flange 3, second pipeline assembly 2 one end is provided with second pipeline assembly flange 4, first pipeline assembly flange 3 and second pipeline assembly flange 4 are connected between intercommunicating part, intercommunicating part includes connecting straight pipe 5 and connecting elbow 6.The above structure, for the deficiency in the prior art, improved technical solution is proposed.Structure is set, main steam pipeline is used to intercommunicate boiler and steam turbine room, main steam pipeline includes first pipeline assembly 1 and second pipeline assembly 2, first pipeline assembly 1 one end is provided with first pipeline assembly flange 3, second pipeline assembly 2 one end is provided with second pipeline assembly flange 4, there is distance between first pipeline assembly flange 3 and second pipeline assembly flange 4, so, it is convenient to connect intercommunicating part between first pipeline assembly flange 3 and second pipeline assembly flange 4, intercommunicating part includes connecting straight pipe 5 and connecting elbow 6.Connecting straight pipe 5 and connecting elbow 6 are used for different operating conditions respectively.After replacing boiler superheater, it needs to carry out gas purging operation to the replaced superheater first, at this time, connecting straight pipe 5 is removed, the elbow flange of connecting elbow 6 is connected first pipeline assembly flange 3, the other end of connecting elbow 6 is bent downward, the connection purging pipeline of connecting elbow 6 can be ventilated and purged.Operation is completed after purging, first connecting flange 7 of one end of connecting straight pipe 5 is connected first pipeline assembly flange 3, and sealing washer is arranged between the two, second connecting flange 8 of connecting straight pipe 5 is connected second pipeline assembly flange 4, and sealing washer is arranged between the two, to realize the intercommunication of first pipeline assembly 1 and second pipeline assembly 2, can ensure that the steam of boiler can be reliably sent into steam turbine room, ensure that steam turbine room works normally.The boiler main steam pipeline described in the utility model has simple structure, can be conveniently purged after replacing boiler superheater, and does not need to disassemble relevant components, improves operation convenience.

[0023] Connecting straight pipe 5 one end is provided with first connecting flange 7, and connecting straight pipe 5 other end is provided with second connecting flange 8.The above structure, the setting of first connecting flange and second connecting flange, to facilitate the reliable intercommunication of first pipeline assembly and second pipeline assembly during normal operation.

[0024] Connecting elbow 6 includes elbow body 9 and elbow flange 10.The above structure, the setting of connecting elbow, is used to intercommunicate boiler when purging operation, reliably realizes purging.

[0025] Connecting straight pipe 5 one end of the first connecting flange 7 of the first pipeline assembly flange 3 is connected, and the second connecting flange 8 of connecting straight pipe 5 is connected second pipeline assembly flange 4 when boiler main steam pipeline normally operates.Elbow flange 10 of connecting elbow 6 is connected first pipeline assembly flange 3 when boiler main steam pipeline purges, and the other end of elbow body 9 is bent downward.

[0026] The elbow body 9 is in an acute angle or right angle structure with the first pipeline assembly flange 3. The above structure, the elbow body is in a bending structure, facilitating the connection of the purging pipeline for purging.

[0027] The first pipeline assembly 1 is connected with the boiler 11 at the other end, and the second pipeline assembly 2 is connected with the steam turbine room 12 at the other end. The elbow body 9 of the connecting elbow 6 is connected with the purging pipe piece flange 15 of the purging pipe piece 14 through the elbow body flange 13. When purging, the gas supplied by the purging pipe piece enters the boiler through the first pipeline assembly, and the superheater inside the boiler can be reliably purged.

[0028] The boiler main steam pipeline, when being structured, is used for connecting the boiler and the steam turbine room, and comprises a first pipeline assembly 1 and a second pipeline assembly 2. The first pipeline assembly 1 is provided with a first pipeline assembly flange 3 at one end, and the second pipeline assembly 2 is provided with a second pipeline assembly flange 4 at one end. There is a distance between the first pipeline assembly flange 3 and the second pipeline assembly flange 4, so that a connecting part can be connected between the first pipeline assembly flange 3 and the second pipeline assembly flange 4. The connecting part comprises a connecting straight pipe 5 and a connecting elbow 6. The connecting straight pipe 5 and the connecting elbow 6 are respectively used for different operation conditions. After the replacement of the boiler superheater, the replaced superheater needs to be purged by gas, at this time, the connecting straight pipe 5 is removed, the elbow flange of the connecting elbow 6 is connected with the first pipeline assembly flange 3, the other end of the connecting elbow 6 is bent downward, the connecting purging pipeline of the connecting elbow 6 can be ventilated for purging operation, and the operation is simple. After the purging operation is completed, the connecting elbow 6 is removed, the first connecting flange 7 at one end of the connecting straight pipe 5 is connected with the first pipeline assembly flange 3, a sealing gasket is arranged between the two, the second connecting flange 8 of the connecting straight pipe 5 is connected with the second pipeline assembly flange 4, and a sealing gasket is arranged between the two, the communication between the first pipeline assembly 1 and the second pipeline assembly 2 is realized, the steam of the boiler can be reliably sent into the steam turbine room, and the normal work of the steam turbine room is ensured.

[0029] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode. Any improvement using the method concept and technical scheme of the utility model, or direct application of the concept and technical scheme of the utility model to other occasions without improvement, is within the protection scope of the utility model.

Claims

1. A main steam pipe of a boiler, characterized in that: The main steam pipeline comprises a first pipeline assembly (1) and a second pipeline assembly (2); a first pipeline assembly flange (3) is provided at one end of the first pipeline assembly (1); a second pipeline assembly flange (4) is provided at one end of the second pipeline assembly (2); a connecting component is connected between the first pipeline assembly flange (3) and the second pipeline assembly flange (4); the connecting component comprises a connecting straight pipe (5) and a connecting elbow (6).

2. The main steam pipe of the boiler according to claim 1, characterized in that: A first connecting flange (7) is provided at one end of the connecting straight pipe (5), and a second connecting flange (8) is provided at the other end of the connecting straight pipe (5).

3. The main steam pipe of the boiler according to claim 1 or 2, characterized in that: The connecting elbow (6) comprises an elbow body (9) and an elbow flange (10).

4. The main steam pipe of the boiler according to claim 2, characterized in that: When the main steam pipeline of the boiler is in normal operation, the first connecting flange (7) connected to one end of the straight pipe (5) is connected to the first pipeline assembly flange (3), and the second connecting flange (8) connected to the straight pipe (5) is connected to the second pipeline assembly flange (4).

5. The main steam pipe of the boiler according to claim 3, characterized in that: When the main steam pipeline of the boiler is purged, the elbow flange (10) of the connecting elbow (6) is connected to the first pipeline assembly flange (3), and the other end of the elbow body (9) is bent downward.

6. The main steam pipe of the boiler according to claim 3, characterized in that: The elbow body (9) and the first pipe assembly flange (3) form an acute angle or a right angle structure.

7. The main steam pipeline of the boiler according to claim 1 or 2, characterized in that: The other end of the first pipe assembly (1) is connected to the boiler (11), and the other end of the second pipe assembly (2) is connected to the turbine room (12).

8. The main steam pipe of the boiler according to claim 3, characterized in that: The elbow body (9) of the connecting elbow (6) is connected to the purge pipe flange (15) of the purge pipe (14) via the elbow body flange (13).

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