CN219431902U - Steam waste heat and residual pressure power generation system of high-pressure deaerator - Google Patents
Steam waste heat and residual pressure power generation system of high-pressure deaerator Download PDFInfo
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- CN219431902U CN219431902U CN202320732047.1U CN202320732047U CN219431902U CN 219431902 U CN219431902 U CN 219431902U CN 202320732047 U CN202320732047 U CN 202320732047U CN 219431902 U CN219431902 U CN 219431902U
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Abstract
The utility model provides a steam waste heat and residual pressure power generation system of a high-pressure deaerator, which comprises a screw generator, wherein the screw generator is communicated with a steam main pipe for a factory through a generator steam inlet pipe, and a steam outlet of the screw generator is communicated with a steam inlet pipe of the high-pressure deaerator; the power output end of the screw generator is connected with a factory 6kV bus; the electric power output end of the screw generator is connected to a 6kV high-voltage power distribution cabinet, and is integrated into a 6kV bus for a factory through the 6kV high-voltage power distribution cabinet, and then is connected with a power distribution room for the factory; the plant steam main pipe is connected with the generator steam inlet pipe and the steam turbine through a three-way valve, and the steam exhaust pipe of the steam turbine is communicated with the generator steam inlet pipe; a generator steam inlet pipe of the screw generator is provided with an electromagnetic valve, a signal input end of the electromagnetic valve is connected with a signal output end of the DCS control system, and a working instruction issued by the DCS control system is received; the high-pressure deaerator has the advantage of solving the problem of high-grade steam energy loss waste before entering the high-pressure deaerator in the existing thermal power plant.
Description
Technical Field
The utility model relates to the technical field of thermal power equipment, in particular to a steam waste heat and residual pressure power generation system of a high-pressure deaerator.
Background
The high-pressure deaerator is used for removing oxygen in water in a boiler water supply system in a thermal power plant so as to ensure the quality of boiler water supply, the power source of the high-pressure deaerator is high-pressure exhaust steam connected to a turbine unit or directly combined with a plant steam main pipe, and a pressure reducing valve is required to be arranged on a pipeline entering the high-pressure deaerator for exhausting steam and reducing pressure because the steam pressure and the flow rate of the high-pressure deaerator are relatively high, so that the original high-grade steam energy loss is directly converted into electric energy in a pressure reducing mode.
Disclosure of Invention
In view of the above, the main purpose of the utility model is to provide a steam waste heat and residual pressure power generation system of a high-pressure deaerator, which can solve the problem of high-grade steam energy loss and waste before entering the high-pressure deaerator in the existing thermal power plant.
In order to achieve the aim of the utility model, the technical scheme adopted is as follows:
the steam waste heat and residual pressure power generation system of the high-pressure deaerator comprises a screw generator, wherein the screw generator is communicated with a steam main pipe for a factory through a generator steam inlet pipe, and a steam outlet of the screw generator is communicated with a steam inlet pipe of the high-pressure deaerator; the power output end of the screw generator is connected with a factory 6kV bus; the electric power output end of the screw generator is connected to a 6kV high-voltage power distribution cabinet, and is integrated into a 6kV bus for a factory through the 6kV high-voltage power distribution cabinet, and then is connected with a power distribution room for the factory; the plant steam main pipe is connected with the generator steam inlet pipe and the steam turbine through a three-way valve, and the steam exhaust pipe of the steam turbine is communicated with the generator steam inlet pipe; the generator steam inlet pipe of the screw generator is provided with an electromagnetic valve, the signal input end of the electromagnetic valve is connected with the signal output end of the DCS control system, and the electromagnetic valve receives a working instruction issued by the DCS control system.
Preferably, the steam inlet temperature of the screw generator is 280+/-20 ℃, the steam outlet temperature is 230+/-20 ℃, the steam inlet pressure is 1.0+/-0.1 MPa, and the steam outlet pressure is lower than 0.58MPa.
Preferably, the temperature of the reflux steam in the steam turbine is 230+/-20 ℃, and the pressure of the reflux steam is 0.5+/-0.2 MPa.
Preferably, the turbine is provided with a lubricating oil station outside, the lubricating oil station is provided with a lubricating oil pipeline communicated with a lubricating oil way of the turbine, and the turbine is also provided with a control oil station, an oil station control cabinet, an oil cooler, a lubricating oil pump, a control oil pump, a lubricating oil filter, a control oil filter, a lubricating oil purifying device and a control oil purifying device; the control oil station is provided with a control oil delivery pipeline communicated with a control oil way of the steam turbine, and the lubricating oil delivery pipeline and the control oil delivery pipeline are respectively provided with a lubricating oil pump, an oil cooler, a control oil pump and an oil cooler.
Preferably, a lubricating oil filter and a lubricating oil purifying device are arranged between the lubricating oil station and the lubricating oil pump, and a control oil filter and a control oil purifying device are arranged between the control oil station and the control oil pump; the oil station control cabinet is in control connection with the control oil station, the lubricating oil pump, the control oil pump, the lubricating oil filter, the control oil filter, the lubricating oil purifying device and the control oil purifying device.
Preferably, a turbine control device and a UPS device are arranged outside the turbine, the UPS device is electrically connected with the power plant system and is electrically connected with a water supply pump driving device at the same time, and the turbine control device is connected with the turbine in a control manner, so that the on-site manual control and the remote DCS control of the turbine are realized.
Preferably, at least two isolation valves are arranged on a reflux steam inlet pipe of the steam turbine, one is an electric isolation valve of the steam inlet, the other is a manual isolation valve of the steam inlet, a corrosion-resistant steam filter screen is arranged on a steam inlet port of the manual isolation valve of the steam inlet, the effective flow area of the corrosion-resistant steam filter screen is more than twice the cross-sectional area of a steam interface of the steam turbine, a corrosion-resistant steam filter screen is arranged on a steam inlet port of the electric isolation valve of the steam inlet, and the effective flow area of the corrosion-resistant steam filter screen is more than twice the cross-sectional area of the steam interface of the steam turbine.
The utility model provides a steam waste heat and residual pressure power generation system of a high-pressure deaerator, which has the following advantages:
the system removes the pressure reducing valve on the steam inlet pipeline of the high-pressure deaerator, is connected with the screw generator, and then communicates the steam outlet of the screw generator with the steam inlet of the high-pressure deaerator, and the power output end of the screw generator is connected with the 6kV bus for the factory, so that the original high-grade steam energy lost through the pressure reducing valve is converted into electric energy and the pressure matched steam energy is provided for the high-pressure deaerator, the safe operation of the high-pressure deaerator can be ensured, the residual pressure of the steam can be fully utilized to convert the electric energy, and the energy utilization rate is improved.
Drawings
Fig. 1 is a schematic diagram 1 of a steam waste heat and residual pressure power generation system of the high-pressure deaerator.
Fig. 2 is a schematic diagram 2 of a steam waste heat and residual pressure power generation system of the high-pressure deaerator.
In the figure: 1. a high pressure deaerator; 2. a screw generator; 3. 6kV high-voltage power distribution cabinet; 4. a power distribution room for factories; 5. an electromagnetic valve; 6. a DCS control system; 7. a steam main; 8. a steam turbine.
Detailed Description
The utility model is further illustrated and described below in conjunction with specific embodiments and the accompanying drawings.
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "horizontal", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1
As shown in fig. 1, the steam waste heat and residual pressure power generation system of the high-pressure deaerator comprises a screw generator 2, wherein the screw generator 2 is communicated with a steam main pipe 7 for a factory through a generator steam inlet pipe, and a steam outlet of the screw generator 2 is communicated with a steam inlet pipe of the high-pressure deaerator 1; the power output end of the screw generator 2 is connected with a factory 6kV bus; the power output end of the screw generator 2 is connected to a 6kV high-voltage power distribution cabinet 3, and is integrated into a 6kV bus for a factory through the 6kV high-voltage power distribution cabinet 3, and then is connected with a power distribution room 4 for the factory; the generator steam inlet pipe of the screw generator 2 is provided with an electromagnetic valve 5, and the signal input end of the electromagnetic valve 5 is connected with the signal output end of the DCS control system 6 to receive the working instruction issued by the DCS control system 6.
As shown in figure 2, a steam waste heat and residual pressure power generation system of a high-pressure deaerator is characterized in that a plant steam main pipe 7 is connected with a generator steam inlet pipe and a steam turbine 8 through a three-way valve, and a steam exhaust pipe of the steam turbine 8 is communicated with the generator steam inlet pipe.
Further, the steam inlet temperature of the screw generator 2 is 280+/-20 ℃, the steam outlet temperature is 230+/-20 ℃, the steam inlet pressure is 1.0+/-0.1 MPa, the steam outlet pressure is lower than 0.58MPa, the reflux steam temperature in the steam turbine 8 is 230+/-20 ℃, and the reflux steam pressure is 0.5+/-0.2 MPa.
Further, a lubricating oil station is arranged outside the steam turbine 8, the lubricating oil station is provided with a lubricating oil pipeline communicated with a lubricating oil way of the steam turbine 8, and a control oil station, an oil station control cabinet, an oil cooler, a lubricating oil pump, a control oil pump, a lubricating oil filter, a control oil filter, a lubricating oil purifying device and a control oil purifying device are also arranged outside the steam turbine 8; the control oil station is provided with a control oil pipeline communicated with a control oil way of the steam turbine 8, the lubricating oil pipeline and the control oil pipeline are respectively provided with a lubricating oil pump, an oil cooler, a control oil pump and an oil cooler, a lubricating oil filter and a lubricating oil purifying device are arranged between the lubricating oil station and the lubricating oil pump, and a control oil filter and a control oil purifying device are arranged between the control oil station and the control oil pump; the oil station control cabinet is in control connection with the control oil station, the lubricating oil pump, the control oil pump, the lubricating oil filter, the control oil filter, the lubricating oil purifying device and the control oil purifying device.
Further, a steam turbine control device and a UPS device are arranged outside the steam turbine 8, the UPS device is electrically connected with the power plant system and is electrically connected with a water supply pump driving device at the same time, the steam turbine control device is controlled and connected with the steam turbine 8, so that the on-site manual control and the remote DCS control of the steam turbine 8 are realized, at least two isolation valves are arranged on a reflux steam inlet pipe of the steam turbine 8, one is an electric isolation valve of the steam inlet, and the other is an manual isolation valve of the steam inlet.
Further, a corrosion-resistant steam filter screen is arranged on the steam inlet port of the steam inlet manual isolation valve, the effective flow area of the corrosion-resistant steam filter screen is more than twice the cross section area of the steam interface of the steam turbine 8, and the corrosion-resistant steam filter screen is arranged on the steam inlet port of the steam inlet electric isolation valve, and the effective flow area of the corrosion-resistant steam filter screen is more than twice the cross section area of the steam interface of the steam turbine 8.
When the equipment runs, a worker gives an opening working instruction to the electromagnetic valve 5 through the DCS control system 6, the electromagnetic valve 5 is opened, high-grade steam enters the screw generator 2 through the steam main pipe 7, after power generation, the steam energy is converted and decompressed, the steam energy is communicated with the steam inlet pipe of the high-pressure deaerator 1 through the steam outlet of the screw generator 2 to provide matched steam power for the high-pressure deaerator 1, a part of steam is separated from the steam main pipe 7 to reflux, the reflux steam passes through the steam turbine 8 to drive the steam turbine 8 to run, and no other equipment provides power; the electric energy generated by the screw generator 2 is merged into a power distribution room 4 for a factory through a 6kV high-voltage power distribution cabinet 3 by an electric power output end, so as to provide electric energy for the operation of the factory.
Example 2
This embodiment differs from embodiment 1 in that:
the waste steam generated by the high-pressure deaerator 1 is filtered and then is collected, waste heat is collected through the heat exchanger and used as power of the steam turbine 8, the thermal power cooling water is collected, and the filtered waste steam is pumped to the boiler through the water pump water inlet pipe to be reused to generate steam, namely, waste materials generated in the thermal power process are collected again for use, so that the material consumption is reduced, the production cost is reduced, and the economic benefit of thermal power is improved.
The foregoing has described in detail the embodiments of the present utility model, and specific embodiments have been employed to illustrate the principles and implementations of the embodiments of the present utility model, the above description of the embodiments being only useful for aiding in the understanding of the principles of the embodiments of the present utility model; meanwhile, as for those skilled in the art, according to the embodiments of the present utility model, there are variations in the specific embodiments and the application scope, and the present description should not be construed as limiting the present utility model.
Claims (10)
1. A steam waste heat and residual pressure power generation system of a high-pressure deaerator is characterized in that: the device comprises a screw generator (2), wherein the screw generator (2) is communicated with a steam main pipe (7) for a factory through a generator steam inlet pipe, and a steam outlet of the screw generator (2) is communicated with a steam inlet pipe of a high-pressure deaerator (1); the power output end of the screw generator (2) is connected with a factory 6kV bus;
the electric power output end of the screw generator (2) is connected to a 6kV high-voltage power distribution cabinet (3), and is integrated into a 6kV bus for a factory through the 6kV high-voltage power distribution cabinet (3) and then connected with a power distribution room (4) for the factory;
the plant steam main pipe (7) is connected with a generator steam inlet pipe and a steam turbine (8) through a three-way valve, and a steam exhaust pipe of the steam turbine (8) is communicated with the generator steam inlet pipe;
the screw generator (2) is characterized in that an electromagnetic valve (5) is arranged on a generator steam inlet pipe of the screw generator (2), a signal input end of the electromagnetic valve (5) is connected with a signal output end of a DCS control system (6), and working instructions issued by the DCS control system (6) are received.
2. The high-pressure deaerator steam waste heat and excess pressure power generation system according to claim 1, wherein: the steam inlet temperature of the screw generator (2) is 280+/-20 ℃, the steam exhaust temperature is 230+/-20 ℃, the steam inlet pressure is 1.0+/-0.1 MPa, and the steam exhaust pressure is lower than 0.58MPa.
3. The high-pressure deaerator steam waste heat and excess pressure power generation system according to claim 1, wherein: the temperature of the reflux steam in the steam turbine (8) is 230+/-20 ℃, and the pressure of the reflux steam is 0.5+/-0.2 MPa.
4. The high-pressure deaerator steam waste heat and excess pressure power generation system according to claim 1, wherein: the turbine (8) is provided with a lubricating oil station outside, and the lubricating oil station is provided with a lubricating oil pipeline communicated with a lubricating oil way of the turbine (8).
5. The steam waste heat and excess pressure power generation system of the high-pressure deaerator according to claim 4, wherein: the steam turbine (8) is also provided with a control oil station, an oil station control cabinet, an oil cooler, a lubricating oil pump, a control oil pump, a lubricating oil filter, a control oil filter, a lubricating oil purifying device and a control oil purifying device; the control oil station is provided with a control oil delivery pipeline communicated with a control oil way of the steam turbine (8), and the lubricating oil delivery pipeline and the control oil delivery pipeline are respectively provided with a lubricating oil pump and an oil cooler and a control oil pump and an oil cooler.
6. The high-pressure deaerator steam waste heat and excess pressure power generation system according to claim 5, wherein: a lubricating oil filter and a lubricating oil purifying device are arranged between the lubricating oil station and the lubricating oil pump, and a control oil filter and a control oil purifying device are arranged between the control oil station and the control oil pump; the oil station control cabinet is in control connection with the control oil station, the lubricating oil pump, the control oil pump, the lubricating oil filter, the control oil filter, the lubricating oil purifying device and the control oil purifying device.
7. The high-pressure deaerator steam waste heat and excess pressure power generation system according to claim 5, wherein: the steam turbine (8) is provided with a steam turbine control device and a UPS device, the UPS device is electrically connected with the power plant system and is electrically connected with a water supply pump driving device, and the steam turbine control device is connected with the steam turbine (8) in a control manner, so that the on-site manual control and the remote DCS control of the steam turbine (8) are realized.
8. The high-pressure deaerator steam waste heat and excess pressure power generation system of claim 7, wherein: at least two isolation valves are arranged on a reflux steam inlet pipe of the steam turbine (8), wherein one is a steam inlet electric isolation valve, and the other is a steam inlet manual isolation valve.
9. The high-pressure deaerator steam waste heat and excess pressure power generation system of claim 8, wherein: the steam inlet port of the steam inlet manual isolation valve is provided with a corrosion-resistant steam filter screen, and the effective flow area of the corrosion-resistant steam filter screen is more than twice the cross section area of a steam interface of the steam turbine (8).
10. The high-pressure deaerator steam waste heat and excess pressure power generation system of claim 8, wherein: the steam inlet port of the steam inlet electric isolation valve is provided with a corrosion-resistant steam filter screen, and the effective flow area of the corrosion-resistant steam filter screen is more than twice the cross section area of a steam interface of the steam turbine (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320732047.1U CN219431902U (en) | 2023-04-06 | 2023-04-06 | Steam waste heat and residual pressure power generation system of high-pressure deaerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320732047.1U CN219431902U (en) | 2023-04-06 | 2023-04-06 | Steam waste heat and residual pressure power generation system of high-pressure deaerator |
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| Publication Number | Publication Date |
|---|---|
| CN219431902U true CN219431902U (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320732047.1U Active CN219431902U (en) | 2023-04-06 | 2023-04-06 | Steam waste heat and residual pressure power generation system of high-pressure deaerator |
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| Country | Link |
|---|---|
| CN (1) | CN219431902U (en) |
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2023
- 2023-04-06 CN CN202320732047.1U patent/CN219431902U/en active Active
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