CN216745538U - Condenser air exhaust system for condensing steam turbine generator unit - Google Patents
Condenser air exhaust system for condensing steam turbine generator unit Download PDFInfo
- Publication number
- CN216745538U CN216745538U CN202122526089.3U CN202122526089U CN216745538U CN 216745538 U CN216745538 U CN 216745538U CN 202122526089 U CN202122526089 U CN 202122526089U CN 216745538 U CN216745538 U CN 216745538U
- Authority
- CN
- China
- Prior art keywords
- valve
- inlet
- condenser
- pipeline
- outlet
- 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.)
- Active
Links
Images
Landscapes
- Control Of Turbines (AREA)
Abstract
The utility model provides a condenser air extraction system for a condensing steam turbine generator unit, which mainly solves the problem that working media are wasted in the heat supply season of the existing steam turbine generator unit. The system comprises a vacuum pump, a steam-water separator, a condenser, a drainage shutoff valve, a first valve, a check valve, the condenser, a bypass pipeline and a second valve arranged on the bypass pipeline; the inlet of the vacuum pump is connected with the condenser through an inlet main pipeline, and the outlet of the vacuum pump is connected with the steam-water separator; the check valve, the first valve and the drain shut-off valve are sequentially arranged on the inlet main pipeline; a cooling inlet of the condenser is connected with an inlet of the drainage shut-off valve, a cooling outlet of the condenser is connected with an outlet of the drainage shut-off valve, and a water return port of the condenser is connected with the condenser; the bypass pipeline is connected in parallel at two ends of the first valve, an inlet of the bypass pipeline is connected with an inlet of the first valve, and an outlet of the bypass pipeline is connected with an outlet of the first valve.
Description
Technical Field
The utility model relates to a condensing steam turbine generator unit, in particular to a condenser air extraction system for the condensing steam turbine generator unit.
Background
With the diversification of the energy supply task of the power plant, the power plant not only undertakes the social basic energy power generation task, but also provides the urban residents with hot steam. Based on the diversified requirements of energy supply tasks, the existing 4X 300MW steam turbine generator unit is reformed by high back pressure. The steam turbine generator unit is modified to use the high back pressure rotor to generate electricity and supply heat in the heat supply season, and the pure condensing rotor is replaced to generate electricity in the non-heat supply season. Because thermodynamic system needs, when supplying hot season, the vacuum pump needs full capacity operation, there is the return water problem in condenser return water to the condenser this moment, and drainage is not smooth promptly for the cooling effect of condenser reduces by a wide margin, and a considerable steam is sucked to the vacuum pump along with the condensate gas of condenser, makes the vacuum pump liquid level overflow discharge to the higher side, causes very big working medium waste.
Disclosure of Invention
The utility model aims to solve the problem that working media are wasted in the existing steam turbine generator unit in a heating season, and provides a condenser air exhaust system for a condensing steam turbine generator unit.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a condenser air exhaust system for a condensing steam turbine generator unit comprises a vacuum pump, a steam-water separator, a condenser, a drain shutoff valve, a first valve, a check valve and a condenser; an inlet of the vacuum pump is connected with the condenser through an inlet main pipeline, and an outlet of the vacuum pump is connected with the steam-water separator; the check valve, the first valve and the drainage shutoff valve are sequentially arranged on the inlet main pipeline, and the drainage shutoff valve is a normally closed valve; the cooling inlet of the condenser is connected with the inlet of the drainage shut-off valve, the cooling outlet of the condenser is connected with the outlet of the drainage shut-off valve, the water return port of the condenser is connected with the condenser, and the cooling inlet and the cooling outlet of the condenser are both provided with control valves; it is characterized in that: the device also comprises a bypass pipeline and a second valve arranged on the bypass pipeline; the bypass pipeline is connected in parallel at two ends of the first valve, an inlet of the bypass pipeline is connected with an inlet of the first valve, an outlet of the bypass pipeline is connected with an outlet of the first valve, and the pipe diameter of the bypass pipeline is smaller than that of the inlet main pipeline.
The vacuum shut-off valve is arranged on the inlet main pipeline, an outlet of the vacuum shut-off valve is connected with an inlet of the check valve, the differential pressure switch is connected to two ends of the vacuum shut-off valve in parallel, and an inlet and an outlet of the differential pressure switch are both provided with control valves.
Further, be provided with pressure sensor on the main pipeline of import, and pressure sensor is located the exit of check valve for detect the pressure of the main pipeline of import.
Furthermore, a water discharge pipeline is arranged on the inlet main pipeline, and a water discharge valve is arranged on the water discharge pipeline and used for discharging media in the inlet main pipeline when the condensing steam turbine generator unit is stopped.
Furthermore, a cooler is arranged on a pipeline connecting the outlet of the vacuum pump and the steam-water separator and used for cooling a medium of the outlet pipeline of the vacuum pump.
Further, the top of catch water is provided with the moisturizing unit, the moisturizing unit is including parallelly connected moisturizing main line and moisturizing bypass, be provided with the moisturizing ware on the moisturizing main line, be provided with the control valve on the moisturizing bypass.
Further, a drainage unit is arranged at the bottom end of the steam-water separator and comprises a main drainage pipeline and a drainage bypass, a first drainage valve is arranged on the main drainage pipeline, the drainage bypass is a U-shaped pipeline, and a second drainage valve is arranged on the drainage bypass.
Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:
the condenser air exhaust system of the utility model ensures that the condenser at the inlet of the vacuum pump fully plays a role by adding the small bypass at the inlet of the vacuum pump, the return water pipeline from the return water to the condenser is unblocked, the problems of high liquid level of the vacuum pump and waste of working medium are thoroughly eliminated, and meanwhile, the mode can also properly reduce the current of the vacuum pump and save the plant power rate. In non-heating seasons, the second valve on the bypass is closed, the original operation mode can be switched back, the operation mode is flexible, and electricity and water are saved.
Drawings
Fig. 1 is a schematic view of a condenser air extraction system for a condensing steam turbine generator unit according to the present invention.
Reference numerals: the method comprises the following steps of 1-a vacuum pump, 2-a steam-water separator, 3-a condenser, 4-a drainage shut-off valve, 5-a first valve, 6-a check valve, 7-a condenser, 8-an inlet main pipeline, 9-a bypass pipeline, 10-a second valve, 11-a vacuum shut-off valve, 12-a differential pressure switch, 13-a pressure sensor, 14-a drain valve, 15-a cooler, 16-a water replenishing device, 17-a water replenishing valve, 18-a drainage main pipeline and 19-a drainage bypass.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention and are not intended to limit the scope of the present invention.
Because the original operation mode of the vacuum pump is greatly wasted on water resources when the unit operates at high back pressure in a heat supply season, the utility model ensures that the condenser at the inlet of the vacuum pump fully plays a role by additionally arranging the small bypass at the inlet of the vacuum pump, the water returns to the condenser smoothly, the problems of high liquid level and waste of working media of the vacuum pump are thoroughly solved, the current of the vacuum pump can be properly reduced, and the power consumption rate of a plant is saved. In non-heating seasons, the second valve on the bypass is closed, the original operation mode can be switched back, the operation mode is flexible, and electricity and water are saved.
As shown in fig. 1, the condenser air extraction system for the condensing steam turbine generator unit of the present invention includes a vacuum pump 1, a steam-water separator 2, a condenser 3, a drain shut-off valve 4, a first valve 5, a check valve 6 and a condenser 7; an inlet of the vacuum pump 1 is connected with a condenser 7 through an inlet main pipeline 8, and an outlet of the vacuum pump 1 is connected with the steam-water separator 2; the check valve 6, the first valve 5 and the drainage shut-off valve 4 are sequentially arranged on the inlet main pipeline 8, and the drainage shut-off valve 4 is a normally closed valve; a cooling inlet of the condenser 3 is connected with an inlet of the drain off valve 4, a cooling outlet is connected with an outlet of the drain off valve 4, a water return port is connected with the condenser 7, and the cooling inlet and the cooling outlet of the condenser 3 are both provided with control valves; it is characterized in that: a bypass line 9 and a second valve 10 arranged on the bypass line 9; the bypass pipeline 9 is connected in parallel at two ends of the first valve 5, an inlet of the bypass pipeline is connected with an inlet of the first valve 5, an outlet of the bypass pipeline is connected with an outlet of the first valve 5, and the pipe diameter of the bypass pipeline 9 is smaller than that of the inlet main pipeline 8.
According to the utility model, after the small bypass is added at the inlet of the vacuum pump, the amount of wet steam entering the vacuum pump is greatly reduced, and the amount of condensed water condensed by a cooler attached to the vacuum pump system is greatly reduced, so that the use amount of desalted water is saved. In addition, the steam quantity of the condenser at the inlet of the vacuum pump is reduced along with the great reduction of the wet steam quantity, the steam quantity is in the cooling capacity of the condenser, the steam stagnation at the steam side of the condenser is reduced, and finally the water drainage smoothness of the condenser is ensured.
In this embodiment, a vacuum shut-off valve 11 and a differential pressure switch 12 are further disposed on an inlet pipeline of the vacuum pump 1, the vacuum shut-off valve 11 is disposed on the inlet main pipeline 8, an outlet of the vacuum shut-off valve is connected to an inlet of the check valve 6, an inlet of the vacuum shut-off valve is connected to the bypass pipeline 9, the differential pressure switch 12 is connected in parallel to two ends of the vacuum shut-off valve 11, and an inlet and an outlet of the differential pressure switch 12 are both provided with control valves. When the vacuum pump 1 is in operation, the pressure in the inlet main line 8 is detected by the pressure difference switch 12, and the vacuum shut-off valve 11 can be opened only when the pressure in the inlet main line 8 meets the requirement. Meanwhile, a pressure sensor 13 may be further disposed on the inlet main pipeline 8 of the vacuum pump 1, and the pressure sensor 13 is located at an outlet of the check valve 6 and is used for detecting the pressure of the inlet main pipeline 8. In addition, the inlet main pipeline 8 is also provided with a water discharge pipeline, and the water discharge pipeline is provided with a water discharge valve 14 for discharging the medium in the inlet main pipeline 8 when the condensing steam turbine generator unit is stopped.
In this embodiment, a cooler 15 is provided on a pipeline connecting the outlet of the vacuum pump 1 and the steam-water separator 2, and is used for cooling the medium in the outlet pipeline of the vacuum pump 1. The top of catch water 2 is provided with the moisturizing unit, and the moisturizing unit is provided with moisturizing ware 16 including parallelly connected moisturizing main line and moisturizing bypass on the moisturizing main line, and the moisturizing is provided with the control valve on the bypass. The bottom end of the steam-water separator 2 is provided with a drainage unit, the drainage unit comprises a main drainage pipeline 18 and a drainage bypass 19, a first drainage valve is arranged on the main drainage pipeline 18, the drainage bypass 19 is a U-shaped pipeline, and a second drainage valve is arranged on the U-shaped pipeline.
The condenser air extraction system of the utility model enables the condenser 3 at the inlet of the vacuum pump 1 to fully play a cooling role, a large amount of uncondensed exhaust steam is recovered, and the desalted water is saved by about 96 tons/day. The system only adds a small bypass of a manual door, and the investment of a small vacuum pump (about 80 ten thousand yuan) can be saved. Meanwhile, the condenser air exhaust system utilizes the original vacuumizing inlet pipeline, the modification workload is small, the operation and maintenance are convenient, and the overhaul workload is not obviously changed. In addition, the system can realize flexible switching of the system only by operating the bypass manual door.
Claims (7)
1. A condenser air extraction system for a condensing steam turbine generator unit comprises a vacuum pump (1), a steam-water separator (2), a condenser (3), a drain shut-off valve (4), a first valve (5), a check valve (6) and a condenser (7);
an inlet of the vacuum pump (1) is connected with the condenser (7) through an inlet main pipeline (8), and an outlet of the vacuum pump (1) is connected with the steam-water separator (2);
the check valve (6), the first valve (5) and the drainage shut-off valve (4) are sequentially arranged on the inlet main pipeline (8), and the drainage shut-off valve (4) is a normally closed valve;
a cooling inlet of the condenser (3) is connected with an inlet of the drainage shutoff valve (4), a cooling outlet is connected with an outlet of the drainage shutoff valve (4), a water return port is connected with the condenser (7), and the cooling inlet and the cooling outlet of the condenser (3) are both provided with control valves;
the method is characterized in that: the device also comprises a bypass pipeline (9) and a second valve (10) arranged on the bypass pipeline (9);
the bypass pipeline (9) is connected in parallel at two ends of the first valve (5), an inlet of the bypass pipeline is connected with an inlet of the first valve (5), an outlet of the bypass pipeline is connected with an outlet of the first valve (5), and the pipe diameter of the bypass pipeline (9) is smaller than that of the inlet main pipeline (8).
2. The condenser air extraction system for a condensing steam turbine generator unit according to claim 1, characterized in that: the vacuum valve is characterized by further comprising a vacuum shutoff valve (11) and a pressure difference switch (12), wherein the vacuum shutoff valve (11) is arranged on the inlet main pipeline (8), the outlet of the vacuum shutoff valve is connected with the inlet of the check valve (6), the pressure difference switch (12) is connected to two ends of the vacuum shutoff valve (11) in parallel, and the inlet and the outlet of the pressure difference switch (12) are respectively provided with a control valve.
3. The condenser air extraction system for a condensing steam turbine generator unit according to claim 1, characterized in that: and a pressure sensor (13) is arranged on the inlet main pipeline (8), and the pressure sensor (13) is positioned at the outlet of the check valve (6) and is used for detecting the pressure of the inlet main pipeline (8).
4. The condenser air extraction system for a condensing steam turbine generator unit according to claim 1, 2 or 3, characterized in that: the inlet main pipeline (8) is provided with a water discharge pipeline, and the water discharge pipeline is provided with a water discharge valve (14) for discharging media in the inlet main pipeline (8) when the condensing steam turbine generator unit is stopped.
5. The condenser air extraction system for the condensing steam turbine generator unit according to claim 4, characterized in that: and a cooler (15) is arranged on a pipeline connecting the outlet of the vacuum pump (1) and the steam-water separator (2).
6. The condenser air extraction system for a condensing steam turbine generator unit according to claim 5, characterized in that: the top of catch water (2) is provided with the moisturizing unit, the moisturizing unit is including parallelly connected moisturizing main line and moisturizing bypass, moisturizing main line is provided with moisturizing ware (16), be provided with moisturizing valve (17) on the moisturizing bypass.
7. The condenser air extraction system for a condensing steam turbine generator unit according to claim 6, characterized in that: the bottom of catch water (2) is provided with the drainage unit, the drainage unit includes drainage main line (18) and drainage bypass (19), be provided with first drain valve on drainage main line (18), drainage bypass (19) are the U-shaped pipeline, are provided with the second drain valve on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526089.3U CN216745538U (en) | 2021-10-20 | 2021-10-20 | Condenser air exhaust system for condensing steam turbine generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526089.3U CN216745538U (en) | 2021-10-20 | 2021-10-20 | Condenser air exhaust system for condensing steam turbine generator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216745538U true CN216745538U (en) | 2022-06-14 |
Family
ID=81923572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122526089.3U Active CN216745538U (en) | 2021-10-20 | 2021-10-20 | Condenser air exhaust system for condensing steam turbine generator unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216745538U (en) |
-
2021
- 2021-10-20 CN CN202122526089.3U patent/CN216745538U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108757066B (en) | Thermal power generating unit regenerative heat storage system for load response and operation method | |
| CN201448132U (en) | Combined heat and power generation closed-loop phase-change heat supply device | |
| CN101994531A (en) | Closed circulatory phase-change heat supply system for heat and power cogeneration | |
| CN110285470A (en) | Mating steam turbine heating plant and its operation method | |
| CN106949521A (en) | A kind of heat supply remodeling method for realizing the operation of turbine condenser high vacuum | |
| CN207813675U (en) | A kind of co-generation unit for carrying on the back heat supply for solidifying pumping | |
| CN208687705U (en) | A kind of system that excision low pressure (LP) cylinder is coupled into automotive row with low-pressure coal saver | |
| CN216745538U (en) | Condenser air exhaust system for condensing steam turbine generator unit | |
| CN205840930U (en) | A kind of high back pressure little steam turbine heating extraction for heat supply system | |
| CN210483828U (en) | Energy-saving power generation and utilization system utilizing exhaust steam waste heat of steam turbine of thermal power plant | |
| CN211116157U (en) | Low-pressure economizer and low-pressure cylinder zero-output heat supply coupling system | |
| CN110056403B (en) | Extraction back pressure heating type steam turbine connected with exhaust steam recovery system | |
| CN101487604B (en) | Closed circulating phase-change heat distribution system of industrial boiler | |
| CN202532433U (en) | Periodic emission heat recovery system of boiler | |
| CN201277641Y (en) | Enclosed circulation phase-changing heat supply apparatus for industrial boiler | |
| CN203704106U (en) | Heating heat supply network circulating water heat exchange system | |
| CN207922895U (en) | A kind of fired power generating unit direct air cooling system | |
| CN220103105U (en) | Steam waste heat recovery system | |
| CN215804749U (en) | Zero-output condensate water deoxygenation system for low-pressure cylinder of steam turbine | |
| CN110872959A (en) | Low-pressure economizer and low-pressure cylinder zero-output heat supply coupling system | |
| CN215336266U (en) | System for be used for improving heat supply flexibility of thermal power plant | |
| CN204901728U (en) | Heat hydrophobous fiery power boiler waste heat recovery system of discharging fume | |
| CN212565942U (en) | Heating system of cogeneration unit | |
| CN219571887U (en) | Tail waste heat utilization system of waste heat boiler | |
| CN215597383U (en) | Drainage waste heat utilization system of heat supply initial station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |