CN212777304U - Temperature-reducing water system - Google Patents
Temperature-reducing water system Download PDFInfo
- Publication number
- CN212777304U CN212777304U CN202020812945.4U CN202020812945U CN212777304U CN 212777304 U CN212777304 U CN 212777304U CN 202020812945 U CN202020812945 U CN 202020812945U CN 212777304 U CN212777304 U CN 212777304U
- Authority
- CN
- China
- Prior art keywords
- water
- pressure
- desuperheating
- valve
- main pipe
- 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 Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model provides a desuperheating water system can reduce boiler feed pump power consumption and be favorable to extension equipment life. The middle tap of the boiler feed pump is connected with the temperature-reducing water main pipe through a pipeline, and an electric shutoff valve is arranged on the pipeline; the outlet of the boiler feed water pump is connected with a high-pressure feed water main pipe through a pipeline, and an electric shutoff valve is also arranged on the pipeline; an electric gate valve is arranged on the high-pressure water supply main pipe; the high-pressure water supply branch pipes are two, inlets of the two high-pressure water supply branch pipes are connected with the high-pressure water supply main pipe, the connection positions are located on two sides of the electric gate valve, outlets of the two high-pressure water supply branch pipes are combined and then connected with an inlet of the pressure reducing valve, an outlet of the pressure reducing valve is connected with the temperature reducing water main pipe through a pipeline, and the pipeline is provided with an electric shutoff valve; the inlet of the two desuperheating water branch pipes is connected with the desuperheating water main pipe, and the outlet of the two desuperheating water branch pipes is respectively connected with a desuperheating pressure reducer and a desuperheater; the temperature-reducing water branch pipe is provided with a temperature-reducing water regulating valve.
Description
Technical Field
The utility model relates to a desuperheating water system belongs to the desuperheater in the combined heat and power generation project and the technical field that reduces the temperature of temperature and pressure reducer.
Background
In the cogeneration project, the ultra-high pressure parameters and the temperature and pressure reducers and the desuperheaters of the following units are important equipment for ensuring the safety and stability of heat supply. The temperature reduction water of the temperature reduction equipment is usually supplied with water under high pressure directly, and then is reduced in pressure by a temperature reduction water regulating valve to be sprayed into the temperature reduction equipment according to proper parameters, so that the temperature reduction purpose is realized.
Along with the improvement of unit parameters, the pressure of the desuperheating water is continuously improved, the power consumption of a consumed water supply pump is greatly improved, the pressure of the desuperheating water required by the desuperheating equipment with the same heat supply parameters is unchanged, and the partial pressure difference can be consumed only through the desuperheating water regulating valve and the throttling component, so that high-grade electric energy is wasted, and the desuperheating water regulating valve and the throttling component are easily damaged by erosion.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a temperature reducing water system that structural design is reasonable, can reduce boiler feed pump power consumption and be favorable to extension equipment life.
The utility model provides a technical scheme that above-mentioned problem adopted is: a desuperheating water system comprises a boiler feed water pump, a high-pressure feed water main pipe, a desuperheating pressure reducer, a desuperheater and a desuperheating water regulating valve; the method is characterized in that: the device also comprises an electric shutoff valve, an electric gate valve, a pressure reducing valve, a desuperheating water branch pipe, a high-pressure water supply branch pipe and a shutoff valve; the middle tap of the boiler feed pump is connected with the temperature-reducing water main pipe through a pipeline, and an electric shutoff valve is arranged on the pipeline; the outlet of the boiler feed water pump is connected with a high-pressure feed water main pipe through a pipeline, and an electric shutoff valve is also arranged on the pipeline; an electric gate valve is arranged on the high-pressure water supply main pipe; the high-pressure water supply branch pipes are two, inlets of the two high-pressure water supply branch pipes are connected with the high-pressure water supply main pipe, the connection positions are located on two sides of the electric gate valve, outlets of the two high-pressure water supply branch pipes are combined and then connected with an inlet of the pressure reducing valve, an outlet of the pressure reducing valve is connected with the temperature reducing water main pipe through a pipeline, and the pipeline is provided with an electric shutoff valve; the inlet of the two desuperheating water branch pipes is connected with the desuperheating water main pipe, and the outlet of the two desuperheating water branch pipes is respectively connected with a desuperheating pressure reducer and a desuperheater; the temperature-reducing water branch pipe is provided with a temperature-reducing water regulating valve.
The temperature-reducing water main pipe on which a right pressure measuring point is arranged.
The boiler feed pump adopts a center tap type.
The utility model discloses still include the check valve, install the check valve on the pipeline of taking a percentage in the middle of the boiler feed pump and the female union coupling of desuperheating water, also install the check valve on the pipeline of boiler feed pump export and the female union coupling of high pressure feed water, install the check valve on the desuperheating water branch pipe.
Compared with the prior art, the utility model, have following advantage and effect: structural design is reasonable, the utility model discloses utilize boiler feed pump middle tap as desuperheating water main source of desuperheating pressure reducer and desuperheater, high-pressure feedwater is as reserve water source, and this technical scheme can reduce desuperheating water pressure by a wide margin, reduces boiler feed pump power consumption, reduces the wearing and tearing of desuperheating water valves, increase of service life to improve unit operation economic nature and security.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1, the utility model discloses a boiler feed pump 1, check valve 2, electronic shut-off valve 3, female pipe 4 of high pressure feedwater, the female pipe 5 of desuperheating water, electric gate valve 6, relief pressure valve 7, desuperheating water governing valve 8, desuperheating decompressor 9, desuperheater 10, desuperheating water branch pipe 11, pressure measurement point 12 and high pressure feedwater branch pipe 13.
The boiler feed water pump 1 adopts a middle tap type, and the pressure of the middle tap is higher than the secondary steam pressure of the temperature and pressure reducer 9 and the temperature reducer 10 and is not less than 2 MPa. When the temperature and pressure reducer 9 and the temperature reducer 10 with various parameters exist, the highest steam supply parameter is used as the tap pressure selection basis of the water supply pump.
The middle tap of the boiler water feeding pump 1 is connected with the main pipe 5 of the temperature-reducing water through a pipeline, and a check valve 2 and an electric shutoff valve 3 are installed on the pipeline to prevent the water of the main pipe 5 of the temperature-reducing water from flowing back.
The outlet of the boiler feed pump 1 is connected to a high-pressure feed water main pipe 4 through a pipe, and a check valve 2 and an electric shutoff valve 3 are also mounted on the pipe to prevent the water from flowing back through the high-pressure feed water main pipe 4.
An electric gate valve 6 is arranged on the high-pressure water supply main pipe 4.
The number of the high-pressure water supply branch pipes 13 is two, the inlets of the two high-pressure water supply branch pipes 13 are connected with the high-pressure water supply main pipe 4, the joints are positioned at two sides of the electric gate valve 6, the outlets of the two high-pressure water supply branch pipes 13 are combined and then connected with the inlet of the pressure reducing valve 7, the outlet of the pressure reducing valve 7 is connected with the temperature reducing water main pipe 5 through a pipeline, and the pipeline is provided with the electric shutoff valve 3.
The pressure measuring point 12 is arranged on the temperature-reducing water mother pipe 5. Under normal conditions, the pressure reducing valve 7 is closed, when the pressure of the desuperheating water is lower than the set value of the secondary steam pressure of the desuperheating pressure reducer 9 and the desuperheating device 10, the pressure reducing valve 7 is opened, and water in the high-pressure water supply main pipe 4 enters the desuperheating water branch pipe 11 through the pressure reducing valve 7 to serve as a desuperheating water source. The opening and closing of the pressure reducing valve 7 may be interlocked manually or automatically by setting.
The number of the temperature-reducing water branch pipes 11 is two, the inlets of the two temperature-reducing water branch pipes 11 are connected with the temperature-reducing water main pipe 5, and the outlets are respectively connected with the temperature-reducing pressure reducer 9 and the temperature reducer 10. The desuperheating water branch pipe 11 is provided with a desuperheating water regulating valve 8 and a check valve 2, and the desuperheating water enters a desuperheating pressure reducer 9 and a desuperheater 10 after being depressurized by the desuperheating water regulating valve 8.
The temperature-reducing water system is not limited to 1 boiler feed pump, can be operated by a plurality of feed pumps in parallel, is not limited to 1 group of temperature-reducing and temperature-reducing pressure reducers and desuperheaters, and can be operated by a plurality of temperature-reducing pressure reducers and desuperheaters in parallel.
When the boiler water supply pump works normally, a water source is led out through a middle tap of the boiler water supply pump 1 to serve as desuperheating water, the pressure of the desuperheating water is only about 2MPa higher than that of the desuperheating pressure reducer 9 and the desuperheater 10, the pressure of the desuperheating water is lower, the power consumption of the boiler water supply pump 1 is less, and the abrasion to the desuperheating water regulating valve 8 and the throttling component is reduced. Meanwhile, the variable working condition operation of the unit is considered, the tap pressure of the boiler water feed pump 1 can not meet the requirement of the pressure of the desuperheating water, and the high-pressure water feed main pipe 4 is arranged for supplying water to the desuperheating water main pipe 5 for later use, so that the safety and the stability of the desuperheating water system are ensured.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. A desuperheating water system comprises a boiler feed water pump, a high-pressure feed water main pipe, a desuperheating pressure reducer, a desuperheater and a desuperheating water regulating valve; the method is characterized in that: the device also comprises an electric shutoff valve, an electric gate valve, a pressure reducing valve, a desuperheating water branch pipe, a high-pressure water supply branch pipe and a shutoff valve; the middle tap of the boiler feed pump is connected with the temperature-reducing water main pipe through a pipeline, and an electric shutoff valve is arranged on the pipeline; the outlet of the boiler feed water pump is connected with a high-pressure feed water main pipe through a pipeline, and an electric shutoff valve is also arranged on the pipeline; an electric gate valve is arranged on the high-pressure water supply main pipe; the high-pressure water supply branch pipes are two, inlets of the two high-pressure water supply branch pipes are connected with the high-pressure water supply main pipe, the connection positions are located on two sides of the electric gate valve, outlets of the two high-pressure water supply branch pipes are combined and then connected with an inlet of the pressure reducing valve, an outlet of the pressure reducing valve is connected with the temperature reducing water main pipe through a pipeline, and the pipeline is provided with an electric shutoff valve; the inlet of the two desuperheating water branch pipes is connected with the desuperheating water main pipe, and the outlet of the two desuperheating water branch pipes is respectively connected with a desuperheating pressure reducer and a desuperheater; the temperature-reducing water branch pipe is provided with a temperature-reducing water regulating valve.
2. A desuperheating water system as claimed in claim 1, wherein: and a right pressure measuring point is arranged on the temperature-reducing water mother pipe.
3. A desuperheating water system as claimed in claim 1, wherein: the boiler feed water pump adopts a center tap type.
4. A desuperheating water system as claimed in claim 1, wherein: the boiler water supply system also comprises a check valve, wherein the check valve is arranged on a pipeline connected with the main pipe of the desuperheating water at the middle tap of the boiler water supply pump, the check valve is also arranged on a pipeline connected with the outlet of the boiler water supply pump and the main pipe of the high-pressure water supply, and the check valve is arranged on the branch pipe of the desuperheating water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020812945.4U CN212777304U (en) | 2020-05-15 | 2020-05-15 | Temperature-reducing water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020812945.4U CN212777304U (en) | 2020-05-15 | 2020-05-15 | Temperature-reducing water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212777304U true CN212777304U (en) | 2021-03-23 |
Family
ID=75067874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020812945.4U Active CN212777304U (en) | 2020-05-15 | 2020-05-15 | Temperature-reducing water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212777304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864644A (en) * | 2021-09-07 | 2021-12-31 | 山东电力工程咨询院有限公司 | High-pressure bypass valve desuperheating water system with FCB functional unit |
-
2020
- 2020-05-15 CN CN202020812945.4U patent/CN212777304U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864644A (en) * | 2021-09-07 | 2021-12-31 | 山东电力工程咨询院有限公司 | High-pressure bypass valve desuperheating water system with FCB functional unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109653810B (en) | One furnace with two-machine switching operation thermodynamic system | |
| CN108194151B (en) | Steam turbine shaft seal steam supply adjusting device and method | |
| CN113175363A (en) | Master pipe connection system for adjusting high-pressure cylinder to do work and operation method | |
| CN209800041U (en) | Auxiliary steam source device for flexible modification of thermal power generating unit | |
| CN202954856U (en) | System for improving afterheat power generation running efficiency | |
| CN212777304U (en) | Temperature-reducing water system | |
| CN211116813U (en) | Emergency supply device for mechanical seal cooling water of condensate pump of nuclear power plant | |
| CN113175367B (en) | Master control system for improving peak regulation capacity and flexibility of unit and operation method | |
| CN113175360A (en) | Bus pipe connection system for improving deep peak shaving low-pressure cylinder efficiency and operation method | |
| CN109653819B (en) | Deep peak-shaving steam turbine system of cogeneration unit and control method | |
| CN112443761A (en) | System and method for improving sealing water supply performance of water supply pump set of thermal power plant | |
| CN209510396U (en) | A kind of two machine switchover operation therrmodynamic system of a furnace zone | |
| CN211975072U (en) | Steam working medium excess pressure utilization structure of thermal power factory | |
| CN202073749U (en) | Heat energy recycling system of air compressor | |
| CN213930438U (en) | Device for improving performance of sealed water supply system of water supply pump set of thermal power plant | |
| CN210485839U (en) | Heat supply system | |
| CN212027972U (en) | Water working medium excess pressure utilization structure of thermal power factory | |
| CN209978018U (en) | Water feeding pump pipeline of three-pressure waste heat boiler | |
| CN202132702U (en) | Thermal recovery pressure reduction device | |
| CN202092115U (en) | System for improving pressure of desuperheating water of superheater | |
| CN206721238U (en) | Blast furnace top pressure safety control is protected in a kind of TRT top pressure power generations | |
| CN214120805U (en) | Converter waste heat recovery steam supplementing system | |
| CN215215773U (en) | Combined steam temperature and pressure reducing device | |
| CN217107145U (en) | Abundant steam utilization system | |
| CN214499186U (en) | Thermodynamic system for FCB function of unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |