CN219570160U - Water passing protection device of shaft seal heater - Google Patents
Water passing protection device of shaft seal heater Download PDFInfo
- Publication number
- CN219570160U CN219570160U CN202320427068.2U CN202320427068U CN219570160U CN 219570160 U CN219570160 U CN 219570160U CN 202320427068 U CN202320427068 U CN 202320427068U CN 219570160 U CN219570160 U CN 219570160U
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- shaft seal
- seal heater
- water
- protection device
- pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a water passing protection device of a shaft seal heater, which comprises a shaft seal heater body, a shaft seal heater water side protection device and a shaft seal heater steam side protection device, wherein the shaft seal heater water side protection device is arranged at the top end of the shaft seal heater body, the shaft seal heater steam side protection device is arranged at the bottom end of the shaft seal heater body, and the shaft seal heater water side protection device and the shaft seal heater steam side protection device are matched for water level interlocking protection after leakage or rupture of a tube bundle in the operation process of the shaft seal heater body.
Description
Technical Field
The utility model belongs to the technical field of shaft seal heaters, and particularly relates to a water passing protection device of a shaft seal heater.
Background
The shaft seal heater is a device for recovering the leakage steam of the shaft seal and heating the condensed water by utilizing the heat of the leakage steam, the condensed water enters from one end of the water side of the shaft seal heater, and flows out from the other end of the water side of the shaft seal heater, and in the prior art, when a tube bundle leaks in the operation process of the shaft seal heater, the leakage steam cannot be isolated, and only shutdown treatment is performed;
meanwhile, when the water side tube bundle of the shaft seal heater is broken, the water level of the shaft seal heater is raised, water passing of the steam turbine is caused after the water is filled, and safe operation of a unit is critical, so that accidents are caused.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a water passing protection device of a shaft seal heater, so as to solve the technical problems that in the prior art, a tube bundle leaks or breaks in the running process of the shaft seal heater, water passing of a turbine is caused only after shutdown treatment and water filling, and safety running of a unit is critical, and accidents are caused.
The utility model solves the technical problems by adopting the following technical scheme:
the utility model provides a water passing protection device of a shaft seal heater, which comprises a shaft seal heater body, a shaft seal heater water side protection device and a shaft seal heater steam side protection device, wherein the shaft seal heater water side protection device is arranged at the top end of the shaft seal heater body, the shaft seal heater steam side protection device is arranged at the bottom end of the shaft seal heater body, the shaft seal heater water side protection device and the shaft seal heater steam side protection device are matched for water level interlocking protection after pipe bundle leakage or rupture in the operation process of the shaft seal heater body,
the water side protection device of the shaft seal heater comprises a water inlet pipe, a water outlet pipe and a water inlet and outlet communicating pipe, one ends of the water inlet pipe and the water outlet pipe are respectively communicated with the top end of the shaft seal heater body, the other ends of the water inlet pipe and the water outlet pipe are respectively communicated with the water inlet and outlet communicating pipe, the water inlet and outlet communicating pipe is respectively communicated with the shaft seal and the low-pressure heater,
a water inlet valve and a water outlet valve are respectively arranged between the water inlet pipe and the water outlet pipe and between the water inlet and outlet communicating pipes, a water inlet and outlet communicating valve is arranged on the water inlet and outlet communicating pipes between the water inlet valve and the water outlet valve,
the steam side protection device of the shaft seal heater comprises a critical pipe, one end of the critical pipe is communicated with the bottom end of the shaft seal heater body, the other end of the critical pipe is communicated with the circulating water ditch, and a critical valve is arranged on the critical pipe;
preferably, the critical tube has a diameter DN219;
preferably, the water inlet valve, the water outlet valve, the water inlet and outlet communication valve and the critical valve are electric regulating valves.
The utility model has the advantages and positive effects that:
compared with the prior art, the water passing protection device of the shaft seal heater comprises a shaft seal heater body, a shaft seal heater water side protection device and a shaft seal heater steam side protection device, wherein the shaft seal heater water side protection device is arranged at the top end of the shaft seal heater body, the shaft seal heater steam side protection device is arranged at the bottom end of the shaft seal heater body, and the shaft seal heater water side protection device and the shaft seal heater steam side protection device are matched for water level interlocking protection after leakage or rupture of a tube bundle in the operation process of the shaft seal heater body.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of the water passing protector of the shaft seal heater according to the present utility model.
Wherein: 1. a shaft seal heater body; 2. a shaft seal heater water side protection device; 3. and a steam side protection device of the shaft seal heater.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
The utility model provides a water passing protection device of a shaft seal heater, which comprises a shaft seal heater body 1, a shaft seal heater water side protection device 2 and a shaft seal heater steam side protection device 3, wherein the shaft seal heater water side protection device 2 is arranged at the top end of the shaft seal heater body 1, the shaft seal heater steam side protection device 3 is arranged at the bottom end of the shaft seal heater body 1, the shaft seal heater water side protection device 2 and the shaft seal heater steam side protection device 3 are matched for water level interlocking protection after pipe bundles leak or break in the operation process of the shaft seal heater body 1,
the water side protection device 2 of the shaft seal heater comprises a water inlet pipe, a water outlet pipe and a water inlet and outlet communicating pipe, one end of the water inlet pipe and one end of the water outlet pipe are respectively communicated with the top end of the shaft seal heater body 1, the other end of the water inlet pipe and the other end of the water outlet pipe are respectively communicated with the water inlet and outlet communicating pipe, the water inlet and outlet communicating pipe is respectively communicated with the shaft seal and the low-pressure heater,
a water inlet valve and a water outlet valve are respectively arranged between the water inlet pipe and the water outlet pipe and between the water inlet and outlet communicating pipes, a water inlet and outlet communicating valve is arranged on the water inlet and outlet communicating pipes between the water inlet valve and the water outlet valve,
the shaft seal heater vapour side protection device 3 includes the critical pipe, the one end of critical pipe with the bottom intercommunication of shaft seal heater body, the other end and the circulation ditch intercommunication of critical pipe, be provided with the critical valve on the critical pipe.
In this embodiment, the critical tube has a diameter DN219.
In this embodiment, the water inlet valve, the water outlet valve, the water inlet and outlet communication valve and the emergency valve are electric regulating valves.
Working principle:
when the shaft seal heater body 1 is in normal operation, the water inlet valve and the water outlet valve are opened, the water inlet and outlet communication valve and the critical valve are closed,
when the tube bundle leaks in the operation process of the shaft seal heater body 1, the water inlet valve and the water outlet valve are closed, the water inlet and outlet communicating valve is opened, so that condensed water circulates from the water inlet and outlet communicating pipe, the shaft seal heater body 1 is isolated, and the shutdown treatment is not needed;
after the tube bundle breaks in the operation process of the shaft seal heater body 1, the water level in the shaft seal heater body 1 rises, at the moment, the critical valve is opened to enable condensation water of the shaft seal heater body 1 to be discharged to the circulating water ditch through the critical pipe, water passing of the steam turbine is prevented from being caused after the water is filled, and accidents are caused due to safe operation of the critical unit.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the utility model includes, but is not limited to, the examples described in the detailed description, as other embodiments derived from the technical solutions of the utility model by a person skilled in the art are equally within the scope of the utility model.
Claims (3)
1. The utility model provides a water protection device of bearing seal heater which characterized in that: comprises a shaft seal heater body, a shaft seal heater water side protection device and a shaft seal heater steam side protection device, wherein the shaft seal heater water side protection device is arranged at the top end of the shaft seal heater body, the shaft seal heater steam side protection device is arranged at the bottom end of the shaft seal heater body, the shaft seal heater water side protection device and the shaft seal heater steam side protection device are matched to be used for water level interlocking protection after leakage or rupture of a tube bundle in the operation process of the shaft seal heater body,
the water side protection device of the shaft seal heater comprises a water inlet pipe, a water outlet pipe and a water inlet and outlet communicating pipe, one ends of the water inlet pipe and the water outlet pipe are respectively communicated with the top end of the shaft seal heater body, the other ends of the water inlet pipe and the water outlet pipe are respectively communicated with the water inlet and outlet communicating pipe, the water inlet and outlet communicating pipe is respectively communicated with the shaft seal and the low-pressure heater,
a water inlet valve and a water outlet valve are respectively arranged between the water inlet pipe and the water outlet pipe and between the water inlet and outlet communicating pipes, a water inlet and outlet communicating valve is arranged on the water inlet and outlet communicating pipes between the water inlet valve and the water outlet valve,
the gland seal heater vapour side protection device includes the critical pipe, the one end of critical pipe with gland seal heater body's bottom intercommunication, the other end and the circulation ditch intercommunication of critical pipe, be provided with critical valve on the critical pipe.
2. The water passing protector of shaft seal heater according to claim 1 wherein: the critical tube has a diameter DN219.
3. The water passing protector of shaft seal heater according to claim 1 wherein: the water inlet valve, the water outlet valve, the water inlet and outlet communication valve and the critical valve are electric regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320427068.2U CN219570160U (en) | 2023-03-09 | 2023-03-09 | Water passing protection device of shaft seal heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320427068.2U CN219570160U (en) | 2023-03-09 | 2023-03-09 | Water passing protection device of shaft seal heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219570160U true CN219570160U (en) | 2023-08-22 |
Family
ID=87669607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320427068.2U Active CN219570160U (en) | 2023-03-09 | 2023-03-09 | Water passing protection device of shaft seal heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219570160U (en) |
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2023
- 2023-03-09 CN CN202320427068.2U patent/CN219570160U/en active Active
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