CN220248164U - Steam seal steam leakage cooling system for changing condensing unit into back pressure unit - Google Patents
Steam seal steam leakage cooling system for changing condensing unit into back pressure unit Download PDFInfo
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- CN220248164U CN220248164U CN202321470286.0U CN202321470286U CN220248164U CN 220248164 U CN220248164 U CN 220248164U CN 202321470286 U CN202321470286 U CN 202321470286U CN 220248164 U CN220248164 U CN 220248164U
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- 238000001816 cooling Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 230000003020 moisturizing effect Effects 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 description 10
- 239000003245 coal Substances 0.000 description 5
- 210000004907 gland Anatomy 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model provides a steam seal leakage cooling system for a back pressure unit of a condensing unit, which utilizes an old original raw water heater to replace a steam seal cooler to cool the steam seal leakage, and simultaneously recovers heat and working media of the steam seal leakage, thereby saving energy and improving cost and time. The utility model comprises a steam turbine, a raw water heater, a shaft seal fan, a front steam seal steam leakage pipe, a rear steam seal steam leakage pipe, a steam seal steam leakage main pipe and a shaft seal fan air inlet main pipe; the front steam seal pipe is connected with a front steam seal of the steam turbine, the rear steam seal pipe is connected with a rear steam seal of the steam turbine, and the front steam seal pipe and the rear steam seal pipe are both connected to a steam seal steam leakage mother pipe; one end of an air inlet main pipe of the shaft seal fan is connected to an inlet of the shaft seal fan; the steam seal steam leakage main pipe is connected to a steam inlet of the raw water heater; the other end of the shaft seal fan air inlet main pipe is connected to an air outlet of the raw water heater.
Description
Technical Field
The utility model relates to a steam seal steam leakage cooling system for a back pressure unit of a condensing unit, which is used in a coal motor unit.
Background
The 'three-change linkage' transformation of the coal motor unit comprises the steps of flexibility transformation, energy saving transformation and heat supply transformation. From the first law of thermodynamics, the boiler efficiency of the coal motor unit is up to 90%, and the energy conservation is limited. The largest break is the waste heat utilization of exhaust steam, namely the heat supply transformation. The heat supply transformation is the most effective energy saving and consumption reduction means of the coal motor group.
Through changing condensing steam turbine generator unit into back pressure formula turbo generator unit, carry out the heat supply and reform transform, can effectively avoid exhaust steam heat loss, improve whole factory's thermal efficiency, reduce carbon dioxide emission total amount. Therefore, the modification of the condensing steam turbine generator unit into the back pressure steam turbine generator unit (or the back extraction unit of the condensing unit) is one of the most important heat supply modification means of the coal motor unit.
After the condensing unit is transformed into the back pressure unit, the total amount of steam leakage of the front steam seal and the rear steam seal is increased, and if the original matched steam seal cooler is used, the problem of insufficient heat exchange area of the original matched steam seal cooler exists; if 1 steam seal cooler is added or replaced by 1 new steam seal cooler with enough heat exchange area, the problems of insufficient reconstruction space, increased investment of new equipment and prolonged reconstruction period are likely to occur
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a steam seal leakage cooling system with reasonable structural design, which changes a condensing unit into a back pressure unit, utilizes an old original raw water heater to replace a steam seal cooler to cool the steam seal leakage, and simultaneously recovers heat and working media of the steam seal leakage, thereby saving energy and improving the cost and time.
The utility model solves the problems by adopting the following technical scheme: a steam seal steam leakage cooling system for a back pressure unit of a condensing unit comprises a steam turbine, a raw water heater, a shaft seal fan, a front steam seal steam leakage pipe, a rear steam seal steam leakage pipe, a steam seal steam leakage main pipe and a shaft seal fan air inlet main pipe; the front steam seal pipe is connected with a front steam seal of the steam turbine, the rear steam seal pipe is connected with a rear steam seal of the steam turbine, and the front steam seal pipe and the rear steam seal pipe are both connected to a steam seal steam leakage mother pipe; one end of an air inlet main pipe of the shaft seal fan is connected to an inlet of the shaft seal fan; the method is characterized in that: the steam seal steam leakage main pipe is connected to a steam inlet of the raw water heater; the other end of the shaft seal fan air inlet main pipe is connected to an air outlet of the raw water heater.
The utility model also comprises a demineralized water supplementing water inlet pipe which is connected to the water inlet of the raw water heater.
The utility model also comprises a demineralized water supplementing outlet pipe which is connected to the water outlet of the raw water heater.
The utility model also comprises a drainage pipeline which is connected with the drainage port of the raw water heater and is connected to the drainage tank of the turbine body.
The shaft seal fans are arranged in parallel in two groups.
Compared with the prior art, the utility model has the following advantages and effects: after the condensing unit is transformed into the back pressure unit, the old original raw water heater and the original shaft seal fan are utilized as the steam seal cooler, so that heat and working media of steam leakage of the steam seal can be effectively recovered, transformation cost is saved, and transformation time is saved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
The embodiment of the utility model comprises a steam turbine 1, a raw water heater 2, a shaft seal fan 3, a front steam seal steam leakage pipe 4, a rear steam seal steam leakage pipe 5, a steam seal steam leakage main pipe 6, a desalted water supplementing water inlet pipe 7, a desalted water supplementing water outlet pipe 8, a shaft seal fan air inlet main pipe 9 and a drainage pipeline 10.
The front gland sealing pipe 4 is connected with the front gland sealing of the steam turbine 1, and the rear gland sealing pipe 5 is connected with the rear gland sealing of the steam turbine 1. The front steam seal pipe 4 and the rear steam seal pipe 5 are both connected to the steam seal steam leakage main pipe 6.
The steam seal leakage main pipe 6 is connected to a steam inlet of the raw water heater 2.
One end of a main shaft seal fan air inlet pipe 9 is connected to an inlet of the shaft seal fan 3, and the other end of the main shaft seal fan air inlet pipe 9 is connected to an exhaust port of the raw water heater 2 for exhausting non-condensable gas in steam. The shaft seal fans 3 are arranged in parallel in two groups.
The demineralized water supplementing water inlet pipe 7 is connected to the water inlet of the raw water heater 2.
The desalted water supplementing water outlet pipe 8 is connected to the water outlet of the raw water heater 2.
The drainage pipeline 10 is connected with a drainage port of the raw water heater 2 and connected to a drainage tank of the turbine body for recovering the steam leakage working medium of the steam seal.
According to the utility model, after the condensing unit is transformed into the back pressure unit, the original raw water heater 2 and the original shaft seal fan 3 are utilized as the steam seal cooler, so that the heat and working medium of steam leakage of the steam seal can be effectively recovered, the transformation cost is saved, and the transformation time is saved.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present utility model. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.
Claims (5)
1. A steam seal steam leakage cooling system for a back pressure unit of a condensing unit comprises a steam turbine, a raw water heater, a shaft seal fan, a front steam seal steam leakage pipe, a rear steam seal steam leakage pipe, a steam seal steam leakage main pipe and a shaft seal fan air inlet main pipe; the front steam seal pipe is connected with a front steam seal of the steam turbine, the rear steam seal pipe is connected with a rear steam seal of the steam turbine, and the front steam seal pipe and the rear steam seal pipe are both connected to a steam seal steam leakage mother pipe; one end of an air inlet main pipe of the shaft seal fan is connected to an inlet of the shaft seal fan; the method is characterized in that: the steam seal steam leakage main pipe is connected to a steam inlet of the raw water heater; the other end of the shaft seal fan air inlet main pipe is connected to an air outlet of the raw water heater.
2. The steam seal steam leakage cooling system of the condensing unit-back pressure changing unit according to claim 1, wherein the steam seal steam leakage cooling system is characterized in that: still include demineralized water moisturizing inlet tube, demineralized water moisturizing inlet tube is connected to the water inlet of raw water heater.
3. The steam seal steam leakage cooling system of the condensing unit-back pressure changing unit according to claim 1, wherein the steam seal steam leakage cooling system is characterized in that: the water heater also comprises a demineralized water supplementing and discharging pipe which is connected to the water outlet of the raw water heater.
4. The steam seal steam leakage cooling system of the condensing unit-back pressure changing unit according to claim 1, wherein the steam seal steam leakage cooling system is characterized in that: the steam turbine further comprises a drainage pipeline, wherein the drainage pipeline is connected with a drainage port of the raw water heater and is connected to a steam turbine body drainage tank.
5. The steam seal steam leakage cooling system of the condensing unit-back pressure changing unit according to claim 1, wherein the steam seal steam leakage cooling system is characterized in that: the shaft seal fans are arranged in two groups and are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321470286.0U CN220248164U (en) | 2023-06-09 | 2023-06-09 | Steam seal steam leakage cooling system for changing condensing unit into back pressure unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321470286.0U CN220248164U (en) | 2023-06-09 | 2023-06-09 | Steam seal steam leakage cooling system for changing condensing unit into back pressure unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248164U true CN220248164U (en) | 2023-12-26 |
Family
ID=89235127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321470286.0U Active CN220248164U (en) | 2023-06-09 | 2023-06-09 | Steam seal steam leakage cooling system for changing condensing unit into back pressure unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248164U (en) |
-
2023
- 2023-06-09 CN CN202321470286.0U patent/CN220248164U/en active Active
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