CN216619359U - Energy-saving temperature and pressure reducing device - Google Patents
Energy-saving temperature and pressure reducing device Download PDFInfo
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- CN216619359U CN216619359U CN202122335969.2U CN202122335969U CN216619359U CN 216619359 U CN216619359 U CN 216619359U CN 202122335969 U CN202122335969 U CN 202122335969U CN 216619359 U CN216619359 U CN 216619359U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000006837 decompression Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000889 atomisation Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an energy-saving temperature and pressure reducing device, which comprises a pressure reducing system and a temperature reducing system, wherein an intelligent control cabinet is arranged on the left side of the pressure reducing system, a first valve is arranged on the left lower side of the intelligent control cabinet, a steam inlet is arranged on the left side of the first valve, an electric pressure reducing valve is arranged on the right side of the first valve, a mixed main pipeline is installed on the right side of the electric pressure reducing valve, the temperature reducing system is arranged on the right side of the pressure reducing system, a Venturi tube is arranged below the temperature reducing system, an electric adjustable nozzle is arranged in the temperature reducing system and positioned above the Venturi tube, the Venturi tube is arranged at the temperature reducing water injection position to increase the flow velocity of secondary steam, atomized water drops and the steam are mixed and evaporated in a very short time, the dryness of the steam is high, the load regulation limit of the old-type temperature and pressure reducing device is broken through, and the electric adjustable nozzle has good atomization effect, the bad phenomena of water attack, cavitation and the like are avoided, and the performance of the whole set of device is consistent.
Description
Technical Field
The utility model relates to the technical field of temperature and pressure reduction, in particular to an energy-saving temperature and pressure reduction device.
Background
The temperature and pressure reducing device can reduce the temperature and the pressure of the steam output from a power station or an industrial boiler, a thermal power plant and the like, so that the temperature and the pressure of the steam meet the requirements of the production process. At present, in the domestic temperature and pressure reducing device, the flow channels at the upper end and the lower end of the pressure reducing valve are unreasonable in design, the pressure resistance is not large, the operation is unstable, and the bearing strength of the safety valve is insufficient.
When the heat load of the device changes, the water spraying quantity of the temperature-reducing water in the device is difficult to adjust, the spraying area of the nozzle is not adjustable, the water spraying speed of the temperature-reducing water is suddenly high and suddenly low, the too-high nozzle hole is large in abrasion, the service life is short, the too-low atomization effect is deteriorated, the water hammer phenomenon is caused, the product quality is poor, and the load adjusting capacity is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an energy-saving temperature and pressure reducing device, which aims to solve the problems that the flow passages at the upper end and the lower end of a pressure reducing valve in the background art are unreasonably designed, and the device has insufficient adjusting capacity for temperature reducing water when the thermal load of the device is changed.
In order to achieve the purpose, the utility model provides the following technical scheme: an energy-saving temperature and pressure reducing device comprises a pressure reducing system and a temperature reducing system, wherein an intelligent control cabinet is arranged on the left side of the pressure reducing system, a first valve is arranged below the left side of the intelligent control cabinet, a steam inlet is arranged on the left side of the first valve, an electric pressure reducing valve is arranged on the right side of the first valve, a mixed main pipeline is installed on the right side of the electric pressure reducing valve, the temperature reducing system is arranged on the right side of the pressure reducing system, a Venturi tube is arranged below the temperature reducing system, an electric adjustable nozzle is arranged in the temperature reducing system and is positioned above the Venturi tube, a check valve is arranged on the right side of the electric adjustable nozzle, the check valve is connected with a throttling stop valve through a temperature reducing water pipe,
the tail end of the temperature reduction water pipe is provided with a temperature reduction water inlet, a spring safety valve is arranged above the right side of the temperature reduction water pipe and the mixing main pipeline, a pressure gauge is arranged on the right side of the spring safety valve, a bimetallic strip thermometer is arranged on the right side of the pressure gauge, and a steam outlet is arranged on the right side of the bimetallic strip thermometer.
Preferably, the top of the electric adjustable nozzle is provided with an electric actuator, the lower part of the electric actuator is provided with a regulator, the lower part of the regulator is provided with a desuperheater nozzle, the left side of the desuperheater nozzle is provided with a secondary steam inlet, and the right side of the desuperheater nozzle is provided with a steam outlet.
Preferably, the electric pressure reducing valve is of a balanced structure, and a valve rod and a valve clack of the pressure reducing valve are integrally processed.
Preferably, the control system adopted by the intelligent control cabinet is a PLC (programmable logic controller), and particularly a DCS (distributed control system).
Preferably, the set pressure of the spring safety valve is 1.08-1.1 times of the secondary steam pressure of the full-capacity safety valve.
Preferably, the check valve is located on a desuperheater water line leading to a desuperheater nozzle.
Compared with the prior art, the utility model has the beneficial effects that: this temperature and pressure reducing device has adopted the balanced type structure, and the valve rod and the whole processing of valve clack of relief pressure valve, lower extreme adopt valve body self-sealing structure on the relief pressure valve, and runner reasonable in design, the same proportion withstand voltage ability is the biggest, and the operation is stable. The setting pressure of the full-capacity safety valve is 1.08-1.1 times of the secondary steam pressure, and when the operating pressure exceeds an allowable value, the safety valve automatically acts in time to discharge all the steam with rated flow, so that the safety of equipment is ensured. The venturi tube is arranged at the spraying position of the temperature-reducing water, the flow velocity of the secondary steam is increased, atomized water drops and the steam are mixed and evaporated in a very short time, the dryness of the steam is high, the load regulation limit of the old temperature-reducing pressure-reducing device is broken through, the electric adjustable nozzle has a good atomizing effect, the bad phenomena of water hammer, cavitation and the like are avoided, and the performance of the whole device is consistent. The adjusting nozzle is adopted, the whole device system is simplified, the pipeline arrangement is simple, the number of connection points is reduced, leakage points are reduced, and safe operation is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of an electrically adjustable nozzle according to the present invention.
In the figure: 1. an intelligent control cabinet; 2. an electric pressure reducing valve; 3. an electrically adjustable nozzle; 31. a regulator; 32. an electric actuator; 4. a check valve; 5. a spring safety valve; 6. a main mixing pipe; 7. a pressure reduction system; 8. a desuperheating system; 9. a pressure gauge; 10. a bimetallic strip thermometer; 11. a steam inlet; 12. a steam outlet; 13. a temperature-reducing water inlet; 14. a throttle stop valve; 15. a temperature-reducing water pipe; 16. a secondary steam inlet; 17. a steam outlet; 18. a desuperheater nozzle; 19. a venturi tube; 20. and a first valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: an energy-saving temperature and pressure reducing device comprises a pressure reducing system 7 and a temperature reducing system 8, wherein an intelligent control cabinet 1 is arranged on the left side of the pressure reducing system 7, a first valve 20 is arranged below the left side of the intelligent control cabinet 1, a steam inlet 11 is arranged on the left side of the first valve 20, an electric pressure reducing valve 2 is arranged on the right side of the first valve 20, a mixed main pipeline 6 is arranged on the right side of the electric pressure reducing valve 2, the temperature reducing system 8 is arranged on the right side of the pressure reducing system 7, a Venturi tube 19 is arranged below the temperature reducing system 8, an electric adjustable nozzle 3 is arranged in the temperature reducing system 8, the electric adjustable nozzle 3 is positioned above the Venturi tube 19, a check valve 4 is arranged on the right side of the electric adjustable nozzle 3, the check valve 4 is connected with a throttling stop valve 14 through a temperature reducing water pipe 15, a temperature reducing water inlet 13 is arranged at the tail end of the temperature reducing water pipe 15, a spring safety valve 5 is arranged above the mixed main pipeline 6, a pressure gauge 9 is arranged on the right side of the spring safety valve 5, the right side of the pressure gauge 9 is provided with a bimetallic strip thermometer 10, and the right side of the bimetallic strip thermometer 10 is provided with a steam outlet.
The top of the electric adjustable nozzle 3 is provided with an electric actuator 32, the lower part of the electric actuator 32 is provided with a regulator 31, the lower part of the regulator 31 is provided with a desuperheater nozzle 18, the left side of the desuperheater nozzle 18 is provided with a secondary steam inlet 16, and the right side of the desuperheater nozzle 18 is provided with a steam outlet 17. The electric regulation has good atomization effect, avoids water hammer, cavitation and other adverse phenomena, and the whole device has consistent performance.
The electric pressure reducing valve 2 is of a balanced structure, and a valve rod and a valve clack of the pressure reducing valve are integrally processed. The runner is reasonable in design, the pressure resistance of the same proportion is maximum, and the operation is stable.
The control system adopted by the intelligent control cabinet 1 is a PLC controller, in particular a DCS control system.
The setting pressure of the spring safety valve 5 for a full-capacity safety valve is 1.08-1.1 times of the secondary steam pressure. When the operating pressure exceeds the allowable value, the safety valve automatically acts in time to discharge all the steam with rated flow, thereby ensuring the safety of the equipment.
The check valve 4 is located on the desuperheated water line 15 where the desuperheated water is directed to the desuperheater nozzle 18. The high-temperature steam is prevented from flowing back into the temperature-reducing water pipeline 15 through the nozzle due to sudden reduction of the pressure of the temperature-reducing water caused by some reason.
The working principle is as follows: according to the figures 1 and 2, when the temperature and pressure reducing device is used, steam to be subjected to temperature and pressure reduction enters through a steam inlet 11, then enters into an electric pressure reducing valve 2 through a valve I20 to be subjected to pressure reduction operation, the reduced pressure gas is secondary steam, the secondary steam enters a Venturi tube 19 through a secondary steam inlet 16, the reduced temperature water enters a nozzle 18 of the temperature reducer through a reduced temperature water pipe 15, the intelligent control cabinet 1 adjusts the opening degree of the inside of a regulator 31 through an electric actuator 32 according to detection of the steam, the water injection quantity of the reduced temperature water can be effectively controlled to cool the secondary steam entering the Venturi tube 19, the Venturi tube 19 increases the flow rate of the secondary steam, atomized water drops are mixed and evaporated with the steam within extremely short time, the dryness of the steam is high, the setting pressure of a spring safety valve 5 is 1.08-1.1.1 times of the secondary steam pressure, and when the operating pressure exceeds an allowable value, the safety valve automatically acts in time to discharge all the steam with rated flow, so that the safety of the equipment is ensured, and the temperature and the pressure of the steam subjected to temperature and pressure reduction in the mixing main pipeline 6 can be displayed in the pressure gauge 9 and the bimetallic strip thermometer 10. And finally out through the steam outlet 12.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an energy-conserving temperature and pressure reduction device, includes depressurization system (7), electronic adjustable nozzle (3) and desuperheating system (8), its characterized in that: the left side of the decompression system (7) is provided with the intelligent control cabinet (1), the left lower part of the intelligent control cabinet (1) is provided with the first valve (20), the left side of the first valve (20) is provided with the steam inlet (11), the right side of the first valve (20) is provided with the electric pressure reducing valve (2), the right side of the electric pressure reducing valve (2) is provided with the mixed main pipeline (6), the right side of the decompression system (7) is provided with the temperature reducing system (8), the lower part of the temperature reducing system (8) is provided with the Venturi tube (19), the electric adjustable nozzle (3) is arranged in the temperature reducing system (8), the electric adjustable nozzle (3) is positioned above the Venturi tube (19), the right side of the electric adjustable nozzle (3) is provided with the check valve (4), the check valve (4) is connected with the throttling stop valve (14) through the temperature reducing water pipe (15), and the tail end of the temperature reducing water pipe (15) is provided with the temperature reducing water inlet (13), the right side of temperature reduction water pipe (15) and the top of mixing main pipe (6) set up spring relief valve (5), the right side of spring relief valve (5) set up manometer (9), manometer (9) right side has set up bimetallic strip thermometer (10), bimetallic strip thermometer (10) right side has set up steam outlet (12).
2. An energy saving, temperature and pressure reducing device as claimed in claim 1, wherein: the top of electronic adjustable nozzle (3) set up electric actuator (32), electric actuator (32) below has set up regulator (31), the below of regulator (31) has set up desuperheater nozzle (18), desuperheater nozzle (18) left side has set up secondary steam inlet (16), the right side has set up steam outlet (17).
3. An energy saving, temperature and pressure reducing device as claimed in claim 1, wherein: the electric pressure reducing valve (2) is of a balanced structure, and a valve rod and a valve clack of the pressure reducing valve are integrally processed.
4. An energy saving, temperature and pressure reducing device as claimed in claim 1, wherein: the intelligent control cabinet (1) adopts a PLC (programmable logic controller) and a DCS (distributed control system) control system.
5. An energy saving, temperature and pressure reducing device as claimed in claim 1, wherein: the spring safety valve (5) is a full-capacity safety valve, and the setting pressure of the full-capacity safety valve is 1.08-1.1 times of the secondary steam pressure.
6. An energy saving, temperature and pressure reducing device as claimed in claim 1, wherein: the check valve (4) is located on a desuperheater pipe (15) through which desuperheater water is led to a desuperheater nozzle (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122335969.2U CN216619359U (en) | 2021-09-26 | 2021-09-26 | Energy-saving temperature and pressure reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122335969.2U CN216619359U (en) | 2021-09-26 | 2021-09-26 | Energy-saving temperature and pressure reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216619359U true CN216619359U (en) | 2022-05-27 |
Family
ID=81691192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122335969.2U Active CN216619359U (en) | 2021-09-26 | 2021-09-26 | Energy-saving temperature and pressure reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216619359U (en) |
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2021
- 2021-09-26 CN CN202122335969.2U patent/CN216619359U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 224000 Room 102, building 5, Qianjin company, Dongsheng neighborhood committee, panhuang sub district office, Yandu District, Yancheng City, Jiangsu Province Patentee after: Jiangsu Yutong Fluid Equipment Co.,Ltd. Country or region after: China Address before: 224000 Room 102, building 5, Qianjin company, Dongsheng neighborhood committee, panhuang sub district office, Yandu District, Yancheng City, Jiangsu Province Patentee before: Yancheng Yutong fluid equipment Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |