CN218581673U - Steam seal steam exhaust system for realizing online isolation and maintenance of steam seal heater - Google Patents
Steam seal steam exhaust system for realizing online isolation and maintenance of steam seal heater Download PDFInfo
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- CN218581673U CN218581673U CN202222844628.2U CN202222844628U CN218581673U CN 218581673 U CN218581673 U CN 218581673U CN 202222844628 U CN202222844628 U CN 202222844628U CN 218581673 U CN218581673 U CN 218581673U
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Abstract
The utility model belongs to the technical field of supercritical coal gas power generation, in particular to a steam seal steam exhaust system for realizing online isolation and maintenance of a steam seal heater, which comprises a steam seal steam leakage main pipe, the steam seal heater, a steam seal heater fan unit and a bypass pipeline, wherein the steam seal steam leakage main pipe is connected with a steam interface of the steam seal heater; the steam seal heater fan unit comprises an inlet header pipe; the inlet manifold is connected with a first inlet branch pipe and a second inlet branch pipe which are connected in parallel, the first inlet branch pipe is connected with a first fan, and the second inlet branch pipe is connected with a second fan; the first fan air outlet is connected with the first outlet branch pipe, and the second fan air outlet is connected with the second outlet branch pipe; the air outlet of the steam seal heater is connected with the inlet header pipe; one end of the bypass pipeline is communicated with the steam seal steam leakage main pipe, and the other end of the bypass pipeline is communicated with the first outlet branch pipe and/or the second outlet branch pipe. The system can realize online isolation and maintenance of the steam seal heater, keep the steam seal and the steam leakage of the door lever to be continuously and safely discharged, and avoid economic loss caused by faults of the steam seal heater.
Description
Technical Field
The utility model belongs to the technical field of the supercritical coal gas power generation, concretely relates to realize gland seal heater online isolation maintenance's gland seal steam extraction system.
Background
Currently, for the steam seal system adopting the self-sealing type, a steam seal heater is mostly used for extracting the steam-gas mixture of the steam seal system of the steam turbine, and the steam is prevented from leaking into a steam engine room and an oil system from an end steam seal to pollute the environment and destroy the oil quality. Once the heat exchange tube in the steam seal heater is broken or all the two fans are in failure, the unit needs to be started and stopped in an emergency, and the continuous working capacity of the unit is influenced. Therefore, the invention provides the steam seal steam exhaust system capable of realizing online isolated maintenance of the steam seal heater, and a unit does not need to stop working when the steam seal heater is maintained, so that the working efficiency is not influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming among the prior art vapor seal heater or fan when breaking down, the unit needs emergency shutdown, influences work efficiency's problem.
Therefore, the utility model provides a steam seal steam exhaust system for realizing online isolation and maintenance of a steam seal heater, which comprises a steam seal steam leakage main pipe, the steam seal heater, a steam seal heater fan unit and a bypass pipeline, wherein the steam seal steam leakage main pipe is connected with a steam interface of the steam seal heater; the gland seal heater fan unit comprises an inlet header pipe; the inlet main pipe is connected with a first inlet branch pipe and a second inlet branch pipe which are connected in parallel, the first inlet branch pipe is connected with a first fan, and the second inlet branch pipe is connected with a second fan; the air outlet of the first fan is connected with a first outlet branch pipe, and the air outlet of the second fan is connected with a second outlet branch pipe; the air outlet of the steam seal heater is connected with the inlet header pipe; one end of the bypass pipeline is communicated with the steam seal steam leakage main pipe, and the other end of the bypass pipeline is communicated with the first outlet branch pipe and/or the second outlet branch pipe or is independently connected to the outside.
Specifically, a bypass isolation valve is arranged on the bypass pipeline.
Specifically, a fan outlet block valve and a check valve are sequentially arranged on the first outlet branch pipe and the second outlet branch pipe.
Specifically, a closing valve is arranged at a steam interface of the steam seal steam leakage main pipe close to the steam seal heater.
Specifically, the drain ports of the first fan and the second fan are respectively connected with a drain pipeline.
Specifically, a U-shaped water seal is arranged in the drainage pipeline.
Compared with the prior art, the utility model has the advantages of it is following and beneficial effect:
the utility model provides a steam seal steam exhaust system who overhauls is kept apart on line to this kind of realization steam seal heater realizes the effective online isolation of steam seal heater and overhauls the function through addding steam seal steam exhaust bypass and corresponding partition valve to keep steam seal and door-lock leakage steam to last safe emission, avoid leading to the unplanned shutdown to cause great economic loss because of steam seal heater trouble.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is the utility model provides a realize gland sealing heater online isolation and maintenance's gland sealing steam extraction system's schematic diagram.
Description of reference numerals: 1. a steam seal heater; 2. a block valve; 3. sealing the steam leakage main pipe; 4. an inlet manifold; 5. a first inlet manifold; 6. a second inlet manifold; 7. a first fan; 8. a second fan; 9. a drain pipe; 10. a wastewater tank; 11. a blower outlet block valve; 12. a check valve; 13. a first outlet manifold; 14. a second outlet manifold; 15. a bypass isolation valve; 16. a bypass conduit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the utility model provides a steam seal steam exhaust system for realizing online isolation and maintenance of a steam seal heater, which comprises a steam seal steam leakage main pipe 3, the steam seal heater 1, a steam seal heater fan unit and a bypass pipeline 16, wherein the steam seal steam leakage main pipe 3 is connected with a steam interface of the steam seal heater 1; the gland seal heater fan unit comprises an inlet manifold 4; the inlet header pipe 4 is connected with a first inlet branch pipe 5 and a second inlet branch pipe 6 which are connected in parallel, the first inlet branch pipe 5 is connected with a first fan 7, and the second inlet branch pipe 6 is connected with a second fan 8; an air outlet of the first fan 7 is connected with a first outlet branch pipe 13, and an air outlet of the second fan 8 is connected with a second outlet branch pipe 14; the air outlet of the steam seal heater 1 is connected with the inlet manifold 4; one end of the bypass pipeline 16 is communicated with the steam seal steam leakage main pipe 3, the other end of the bypass pipeline is communicated with the first outlet branch pipe 13 and/or the second outlet branch pipe 14 or is independently connected to the outside, and the bypass pipeline 16 is specifically connected with which outlet branch or is connected to the outside and can be selected according to actual needs. When the system operates normally, the steam seal leakage main pipe 3 collects leakage steam of each shaft seal and the low-pressure section of the door lever of the steam turbine, and the leakage steam enters the steam seal heater 1 through a steam interface of the steam seal heater 1 to heat condensed water. The fan unit of the steam seal heater forms a normal exhaust pipeline of the steam seal heater 1, maintains the shell side micro-negative pressure state of the steam seal heater 1, and keeps the self-sealing of the steam seal system. The first fan 7 and the second fan 8 are operated and standby one by one, so that the operation reliability is improved. When the heat exchange tube in the steam seal heater 1 is broken or the fan is in fault, the bypass pipeline 16 is opened, and the online maintenance function of the steam seal heater 1 is realized. Preferably, a bypass isolation valve 15 is disposed on the bypass pipeline 16, so as to facilitate manual operation of opening and closing the bypass pipeline 16.
Further, a fan outlet block valve 11 and a check valve 12 are sequentially arranged on the first outlet branch pipe 13 and the second outlet branch pipe 14. On one hand, the running fans can be selected according to needs, on-line isolation and maintenance of the single fan are achieved, the influence of equipment faults on the unit is reduced, and on the other hand, exhaust backflow can be prevented.
Furthermore, a block valve 2 is arranged at a steam interface of the steam seal leakage main pipe 3 close to the steam seal heater 1 and used for online isolation of the steam seal heater 1, when the heat exchange pipe inside the steam seal heater 1 is broken or a fan fails, the bypass pipeline 16 is opened, and the block valve 2 is closed, so that the online maintenance function of the steam seal heater 1 is realized.
In a detailed embodiment, the drainage ports of the first fan 7 and the second fan 8 are respectively connected with a drainage pipeline 9. One end of the drainage pipeline 9 is connected with a drainage port at the bottom of the fan shell, and the other end of the drainage pipeline is connected with an external wastewater pool 10 for draining the fan shell to be hydrophobic and preventing accumulated water from damaging the fan. Preferably, a U-shaped water seal is arranged in the water drainage pipeline 9 to keep the micro-negative pressure state in the fan shell.
To sum up, the utility model provides a gland steam exhaust system who overhauls is kept apart on line to this kind of realization gland heater realizes 1 effective online isolation of gland heater and overhauls the function through addding gland steam exhaust bypass and corresponding block valve to keep gland and door-lock pole steam leakage to last safe emission, avoid leading to the unplanned shutdown to cause great economic loss because of 1 trouble of gland heater.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (6)
1. The utility model provides a realize gland sealing heater online isolation maintenance's gland sealing steam extraction system, includes the female pipe of gland sealing steam leakage (3), gland sealing heater (1), gland sealing heater fan unit and bypass pipeline (16), its characterized in that: the steam seal steam leakage main pipe (3) is connected with a steam interface of the steam seal heater (1); the gland seal heater fan unit comprises an inlet header pipe (4); the inlet header pipe (4) is connected with a first inlet branch pipe (5) and a second inlet branch pipe (6) which are connected in parallel, the first inlet branch pipe (5) is connected with a first fan (7), and the second inlet branch pipe (6) is connected with a second fan (8); an air outlet of the first fan (7) is connected with a first outlet branch pipe (13), and an air outlet of the second fan (8) is connected with a second outlet branch pipe (14); the air outlet of the steam seal heater (1) is connected with the inlet header pipe (4); one end of the bypass pipeline (16) is communicated with the steam seal steam leakage main pipe (3), and the other end of the bypass pipeline is communicated with the first outlet branch pipe (13) and/or the second outlet branch pipe (14) or is independently connected to the outside.
2. The gland seal steam exhaust system for realizing online isolation and overhaul of the gland seal heater according to claim 1, which is characterized in that: and a bypass isolating valve (15) is arranged on the bypass pipeline (16).
3. The steam seal steam exhaust system for realizing online isolation and maintenance of the steam seal heater according to claim 1, characterized in that: and the first outlet branch pipe (13) and the second outlet branch pipe (14) are sequentially provided with a fan outlet isolating valve (11) and a check valve (12).
4. The gland seal steam exhaust system for realizing online isolation and overhaul of the gland seal heater according to claim 1, which is characterized in that: and a closing valve (2) is arranged at a steam interface of the steam seal steam leakage main pipe (3) close to the steam seal heater (1).
5. The steam seal steam exhaust system for realizing online isolation and maintenance of the steam seal heater according to claim 1, characterized in that: the drain ports of the first fan (7) and the second fan (8) are respectively connected with a drain pipeline (9).
6. The steam seal steam exhaust system for realizing online isolation and maintenance of the steam seal heater according to claim 5, characterized in that: and a U-shaped water seal is arranged in the drainage pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222844628.2U CN218581673U (en) | 2022-10-27 | 2022-10-27 | Steam seal steam exhaust system for realizing online isolation and maintenance of steam seal heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222844628.2U CN218581673U (en) | 2022-10-27 | 2022-10-27 | Steam seal steam exhaust system for realizing online isolation and maintenance of steam seal heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218581673U true CN218581673U (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222844628.2U Active CN218581673U (en) | 2022-10-27 | 2022-10-27 | Steam seal steam exhaust system for realizing online isolation and maintenance of steam seal heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218581673U (en) |
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2022
- 2022-10-27 CN CN202222844628.2U patent/CN218581673U/en active Active
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