CN214660388U - Cooling water communicating structure of oil cooler of steam turbine - Google Patents
Cooling water communicating structure of oil cooler of steam turbine Download PDFInfo
- Publication number
- CN214660388U CN214660388U CN202120452465.6U CN202120452465U CN214660388U CN 214660388 U CN214660388 U CN 214660388U CN 202120452465 U CN202120452465 U CN 202120452465U CN 214660388 U CN214660388 U CN 214660388U
- Authority
- CN
- China
- Prior art keywords
- oil cooler
- oil
- closed
- cooling water
- cold water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000000498 cooling water Substances 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 230000001050 lubricating effect Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 239000010723 turbine oil Substances 0.000 claims abstract 2
- 239000010736 steam turbine oil Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 239000010705 motor oil Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Abstract
The utility model discloses a cooling water communication structure of a turbine oil cooler, which comprises a closed-cold side cooling device of a gasoline engine lubricating system of two adjacent generator sets, wherein the closed-cold side cooling device of the gasoline engine lubricating system of each generator set comprises two oil coolers which are connected in parallel, and one oil cooler is used for one operation and one oil cooler is used for the other; two ends of each oil cooler are connected in series with a mechanical temperature regulating valve; two ends of each oil cooler are connected with an external closed cold water passage, and the external closed cold water passage in one generator set is communicated with the external closed cold water passage in the other generator set. The utility model discloses carry out the UNICOM with two unit main engine oil tank oil cooler cooling water and reform transform, utilize adjacent quick-witted cooling water to carry out the low discharge cooling to overhauing unit oil cooler after shutting down, can reach the cooling effect, guarantee that main engine oil tank oil temperature is less than or equal to 55 ℃.
Description
Technical Field
The utility model relates to a steam turbine oil cooler cooling water structure.
Background
Turbo-generator sets are large precision machines that operate at high speeds, and the bearings and bushings of their rotors require oil for lubrication and cooling, so the turbines must have associated lubricating oil systems, and the interruption of the lubricating oil system or the deterioration of the oil quality can cause serious equipment damage.
At the initial stage of shutdown of the generator set, the temperature of a high-pressure rotor of the steam turbine is generally greater than 350 ℃, a lubricating oil system, a sealing oil system and a turning gear of the steam turbine still need to be maintained to operate, and the oil temperature is a key control factor during operation of the steam turbine and needs to be cooled by an oil cooler. The closed cold water system mainly has the advantages that a clean closed cold water source which continuously and circularly flows is provided for equipment and working media, the safe and normal operation of the sub-system equipment is guaranteed, under the condition that a unit is stopped, large users on the closed cold water side, such as a hydrogen cooler and a main fan oil station, stop operating, and the like, and the closed cold water and circulating water system needs to be stopped as early as possible for smoothly carrying out maintenance work or saving station power.
The production of the power generation company of Jiangsu Nantong (short for Sutong power plant) is carried out in 2014, and the steam turbine is an ultra-supercritical, primary intermediate reheating, single-shaft, four-cylinder four-steam-exhaust, single-back pressure and reverse condensing steam turbine which is designed and manufactured by Shanghai steam turbine plant company Limited and Germany SIEMENS company. According to the requirement of manufacturers, the shutdown barring of the steam turbine needs to meet the requirement that the temperature of a rotor of a large turbine is less than 100 ℃. During the overhaul period of the unit, about 17 days are needed from the disconnection of the steam turbine to the shutdown of the barring. During the period, the operation of the large engine lubricating oil system needs to be ensured, and meanwhile, the cold pump is closed to operate so as to meet the cooling requirement of the large engine lubricating oil system. After all the important auxiliary machines are stopped, other users do not exist in the closed water cooling system, and the margin of the cooling water system is too large, so that the waste of auxiliary power is caused. The closed cooling water system cannot be shut down, so that the maintenance work of the closed cooling water system is delayed, and the overall maintenance progress is influenced. Under the condition of water cut-off in accident, the oil cooler of the steam turbine has no reliable standby water source, and the safe shutdown of the unit cannot be ensured.
Disclosure of Invention
An object of the utility model is to provide a usable adjacent plane cooling water can carry out the low discharge cooling to overhauing unit oil cooler after generating set shuts down, can reach the steam turbine oil cooler cooling water UNICOM structure of cooling effect.
The technical solution of the utility model is that:
a cooling water communication structure of a steam turbine oil cooler comprises a closed-cold side cooling device of a gasoline engine lubricating system of two adjacent generator sets, wherein the closed-cold side cooling device of the gasoline engine lubricating system of each generator set comprises two oil coolers which are connected in parallel, and one oil cooler is used for one operation and one standby; two ends of each oil cooler are connected in series with a mechanical temperature regulating valve; the method is characterized in that: two ends of each oil cooler are connected with an external closed cold water passage, and the external closed cold water passage in one generator set is communicated with the external closed cold water passage in the other generator set.
The external closed cold water passage has a pipeline diameter of 34 mm.
The utility model discloses carry out the UNICOM with two unit main engine oil tank oil cooler cooling water and reform transform, utilize adjacent quick-witted cooling water to carry out the low discharge cooling to overhauing unit oil cooler after shutting down, can reach the cooling effect, guarantee that main engine oil tank oil temperature is less than or equal to 55 ℃. After the transformation, the cold pump can be stopped in advance for 10 days, so that the auxiliary power is saved, and the economic benefit is improved. The maintenance time and cost are reduced, and the maintenance work of the closed cold water system can be started 10 days in advance. The safety is improved, and the lubricating oil temperature of the steam turbine is controlled through the communication pipeline under the condition of water cut-off in an accident, so that the safe shutdown of the steam turbine unit is ensured.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic diagram of a prior art cooling water configuration for a steam turbine oil cooler.
Detailed Description
A cooling water communication structure of a steam turbine oil cooler comprises closed-cold side cooling devices 3 and 4 of gasoline engine lubricating systems of two adjacent generator sets, wherein the closed-cold side cooling device of the gasoline engine lubricating system of each generator set comprises two oil coolers 1 and 2 which are connected in parallel, and one oil cooler is operated and one oil cooler is provided; two ends of each oil cooler are connected in series with mechanical temperature adjusting valves 5 and 6; two ends of each oil cooler are connected with external closed cold water passages 7 and 8, and the external closed cold water passage in one generator set is communicated with the external closed cold water passage in the other generator set.
The diameter of the pipeline of the external closed cold water passage is 34mm, so that the safety and the economical efficiency of the unit are further improved.
Claims (2)
1. A cooling water communication structure of a steam turbine oil cooler comprises a closed-cold side cooling device of a gasoline engine lubricating system of two adjacent generator sets, wherein the closed-cold side cooling device of the gasoline engine lubricating system of each generator set comprises two oil coolers which are connected in parallel, and one oil cooler is used for one operation and one standby; two ends of each oil cooler are connected in series with a mechanical temperature regulating valve; the method is characterized in that: two ends of each oil cooler are connected with an external closed cold water passage, and the external closed cold water passage in one generator set is communicated with the external closed cold water passage in the other generator set.
2. The turbine oil cooler cooling water communication structure according to claim 1, characterized in that: the external closed cold water passage has a pipeline diameter of 34 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120452465.6U CN214660388U (en) | 2021-03-03 | 2021-03-03 | Cooling water communicating structure of oil cooler of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120452465.6U CN214660388U (en) | 2021-03-03 | 2021-03-03 | Cooling water communicating structure of oil cooler of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660388U true CN214660388U (en) | 2021-11-09 |
Family
ID=78450388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120452465.6U Withdrawn - After Issue CN214660388U (en) | 2021-03-03 | 2021-03-03 | Cooling water communicating structure of oil cooler of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660388U (en) |
-
2021
- 2021-03-03 CN CN202120452465.6U patent/CN214660388U/en not_active Withdrawn - After Issue
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115263476B (en) | Control method of supercritical carbon dioxide serial double-turbine power generation system | |
| CN102392694A (en) | Heating cogeneration generator unit | |
| CN214660388U (en) | Cooling water communicating structure of oil cooler of steam turbine | |
| CN210135039U (en) | Organic working medium thermodynamic cycle system for geothermal power station in high-altitude area | |
| CN112160809A (en) | System and method for generating power by high-temperature gas cooled reactor | |
| CN202370596U (en) | Heating heat supply combined heat and power generation power generator set | |
| CN112682115B (en) | High back pressure transformation method based on extraction condensing turbine | |
| CN206190340U (en) | Screw expander waste heat generator | |
| CN112031883B (en) | Two-stage adjusting system suitable for middle adjusting valve participating in adjusting and lifting industrial steam supply parameters | |
| CN113483320A (en) | Ash water low flash steam recycling system | |
| CN210744871U (en) | Hydro-turbo generator set stator winding internal cooling circulation system based on hydrogen cooling technology | |
| CN110601408A (en) | Hydro-turbo generator set stator winding internal cooling circulation system based on hydrogen cooling technology | |
| CN206190335U (en) | Steam turbine emergency trip system | |
| CN214944581U (en) | Shutdown cooling device of gas-steam combined cycle unit | |
| CN110925730A (en) | Emergency industrial heating system based on shutdown and non-shutdown of coal-fired generating set | |
| CN217421290U (en) | Thermal power plant auxiliary engine steam drive system based on fused salt heat storage | |
| CN205206884U (en) | Gas turbine and gas turbine clearance control system | |
| CN212841522U (en) | Deaerator heating system with screw expander generator set | |
| CN214997831U (en) | Natural air pressure difference power generation and cold energy utilization system | |
| CN215333024U (en) | Comprehensive cooling system for waste heat power generation of internal combustion engine set | |
| CN219974615U (en) | Water cooling lifting system for cylinder sleeve of internal combustion engine for industrial power generation | |
| CN213395249U (en) | Built-in reactor starting and stopping device of high-temperature gas cooled reactor secondary loop | |
| CN112502788B (en) | Control method of combined heat and power generation unit based on reheater cold and hot section cooperative steam extraction | |
| CN111852592B (en) | Steam-free operation system and method based on thermal power intermediate reheating type condenser unit | |
| CN219492354U (en) | System for coupling industrial steam extraction to improve efficiency of compressed air energy storage power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211109 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20211109 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |