CN112228684A - Method for reducing water hammer effect, liquid flow shutoff system and hydraulic engineering - Google Patents
Method for reducing water hammer effect, liquid flow shutoff system and hydraulic engineering Download PDFInfo
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- CN112228684A CN112228684A CN202011175940.6A CN202011175940A CN112228684A CN 112228684 A CN112228684 A CN 112228684A CN 202011175940 A CN202011175940 A CN 202011175940A CN 112228684 A CN112228684 A CN 112228684A
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- valve
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- main
- bypass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/055—Valves therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to the field of fluid mechanics. A method for reducing water hammer effect integrates a bypass water channel (1-1) of a Tesla valve to two sides of a main channel (1), and the fluid direction of a fluid channel is the high resistance direction of a Tesla valve structure; a bypass valve (2-1) is designed on the bypass water channel (1-1), and a main valve (3) is designed on the main channel (1); when the main road (1) works, the main valve (3) opens the bypass valve (2-1) and closes; when the main channel (1) needs to be shut off, the bypass valve (2-1) is closed firstly, the flow rate of the fluid channel is reduced, and then the main valve (3) is closed. The liquid flow shutoff system comprises a main channel (1), a bypass water channel (1-1), a main valve (3) and a bypass valve (2-1). The hydraulic engineering utilizes the method for reducing the water hammer effect to reduce the water hammer effect. The invention has simple structure, low cost, time saving, loss reduction, long service life and easy popularization, and provides a new technical idea.
Description
Technical Field
The invention relates to the field of hydromechanics, in particular to a method for reducing a water hammer effect, a liquid flow shutoff system and hydraulic engineering.
Background
The water hammer effect means that the inner wall of the water pipe is smooth and water flows freely inside the water pipe. When the open valve is suddenly closed, the water flow generates a pressure on the valve and the pipe wall. Because the pipe wall is smooth, the water pressure of the subsequent water flow quickly reaches the maximum under the action of inertia, namely the water hammer effect in the water conservancy, namely the positive water hammer. On the contrary, after the closed valve is suddenly opened, a water hammer, called a negative water hammer, is generated, and has a certain water pressure, but the water hammer is not as large as the negative water hammer.
The water hammer effect can not only cause damage to the pipeline, but also cause particularly large damage to the gate, and a lot of researches are carried out in the prior art to overcome the water hammer effect, but the prior art mainly reduces the water hammer effect by reducing the closing speed of the water gate, so that the time is greatly delayed, and an improvement space exists.
Disclosure of Invention
In order to solve the technical problems, the invention designs a method for reducing the water hammer effect, a liquid flow shutoff system and hydraulic engineering.
1. A method of reducing the water hammer effect, comprising: when designing a fluid channel, integrating a bypass water channel (1-1) of the Tesla valve to two sides of a main channel (1), wherein the fluid direction of the fluid channel is the high resistance direction of the Tesla valve structure; a bypass valve (2-1) is designed on the bypass water channel (1-1), and a main valve (3) is designed on the main channel (1); when the main road (1) works, the main valve (3) opens the bypass valve (2-1) and closes; when the main channel (1) needs to be shut off, the bypass valve (2-1) is closed first, so that the main channel (1) and the bypass water channel (1-1) form a Tesla valve together, the flow rate of a fluid channel is reduced, and then the main valve (3) is closed.
Further: the bypass water channel (1-1) is a pipeline or a groove.
Further: the main channel (1) is a pipeline or a groove.
Further: the bypass valve (2-1) is a pipeline valve or a gate.
Further: the main channel (1) is a pipeline valve or a gate.
Further: the bypass valve (2-1) is an electromagnetic valve.
Further: the number of the bypass water channels (1-1) is more than or equal to 2, and each bypass water channel (1-1) is provided with a bypass valve (2-1).
A flow shutoff system characterized by: comprises a main channel (1), a bypass water channel (1-1), a main valve (3) and a bypass valve (2-1);
the bypass water channel (1-1) is positioned on the side surface of the main channel (1), the bypass water channel (1-1) and the main channel (1) jointly form a Tesla valve structure, and the fluid direction of the fluid channel is the high resistance direction of the Tesla valve structure; the bypass valve (2-1) is positioned on the liquid flow path of the bypass water channel (1-1), and the main valve (3) is positioned on the liquid flow path of the main channel (1); when the main road (1) works, the main valve (3) opens the bypass valve (2-1) and closes; when the main channel (1) needs to be shut off, the bypass valve (2-1) is closed first, so that the main channel (1) and the bypass water channel (1-1) form a Tesla valve together, the flow rate of a fluid channel is reduced, and then the main valve (3) is closed.
The hydraulic engineering utilizes the method for reducing the water hammer effect to reduce the water hammer effect.
Principle of the technology
The water hammer effect is adjusted in sequence by utilizing the closing and the conduction of the bypass valve (2-1) to enable the Tesla valve structure to generate or disappear, and the water hammer effect is reduced because the Tesla valve structure can divide and change the flow direction of liquid and the water flow speed is reduced by utilizing the water flow, and the consistency of the water flow direction can be reduced.
Advantageous effects
1. The invention provides a new technical idea for closing the fluid channel.
1. The invention can increase the closing speed of the water channel without prolonging the closing time intentionally, thereby saving time.
2. The invention does not need to prolong the closing time intentionally, can reduce the damage of the water hammer effect on the valve or the gate, and can reduce the loss.
3. The invention has simple structure and low cost.
4. The invention has the advantages of less mechanical structure, no abrasion and long service life.
5. The invention is easy to popularize.
In conclusion, the invention has the advantages of simple structure, low cost, time saving, loss reduction, long service life and easy popularization, and provides a new technical idea.
Drawings
FIG. 1 is a schematic view of example 1.
Fig. 2 is a schematic diagram of embodiment 2, in which the first bypass valve (F1) and the second bypass valve (F2) are both closed, the main line valve (F3) is open, and fluid flows through the main line (1) without resistance.
Fig. 3 is a schematic diagram of embodiment 2, when entering the main passage closing flow, the first bypass valve (F1) is opened, the second bypass valve (F2) is closed, the main passage valve (F3) is opened, the resistance to the flow of liquid in the main passage (1) of fig. 3 is greater than the resistance to the flow of liquid in the main passage (1) of fig. 2, and the velocity of the flow of liquid in the main passage (1) of fig. 3 is smaller than the velocity of the flow of liquid in the main passage (1) of fig. 2.
Fig. 4 is a schematic diagram of embodiment 2, the first bypass valve (F1), the second bypass valve (F2) are both open, the main passage valve (F3) is open, the resistance to the flow of liquid in the main passage (1) of fig. 4 is greater than the resistance to the flow of liquid in the main passage (1) of fig. 3, and the velocity of the flow of liquid in the main passage (1) of fig. 4 is less than the velocity of the flow of liquid in the main passage (1) of fig. 3.
FIG. 5 is a schematic diagram of example 2, where the main line is completely closed, the first bypass valve (F1) and the second bypass valve (F2) are both open and the main line valve (F3) is closed, and the main line (1) flow is stopped.
FIG. 6 is a schematic view of example 3.
Detailed Description
Example 1, as shown in fig. 1, a method of reducing the water hammer effect, characterized by: when designing a fluid channel, integrating a bypass water channel (1-1) of the Tesla valve to two sides of a main channel (1), wherein the fluid direction of the fluid channel is the high resistance direction of the Tesla valve structure; a bypass valve (2-1) is designed on the bypass water channel (1-1), and a main valve (3) is designed on the main channel (1); when the main road (1) works, the main valve (3) opens the bypass valve (2-1) and closes; when the main channel (1) needs to be shut off, the bypass valve (2-1) is closed first, so that the main channel (1) and the bypass water channel (1-1) form a Tesla valve together, the flow rate of a fluid channel is reduced, and then the main valve (3) is closed.
The bypass water channel (1-1) is a pipeline or a groove.
The channel (1) is a pipeline or a groove.
The bypass valve (2-1) is a pipeline valve or a gate.
The main channel (1) is a pipeline valve or a gate.
Example 2, as shown in fig. 2 to 5, the number of bypass passages (1-1) is 2, the first bypass valve (F1) is located on the fluid path of the first bypass passage (P1), and the second bypass valve (F2) is located on the fluid path of the second bypass passage (P2).
In practice, 3, as shown in FIG. 6, the number of bypass channels (1-1) is greater than 2, and each bypass channel (1-1) has a bypass valve (2-1).
Claims (9)
1. A method of reducing the water hammer effect, comprising: when designing a fluid channel, integrating a bypass water channel (1-1) of the Tesla valve to two sides of a main channel (1), wherein the fluid direction of the fluid channel is the high resistance direction of the Tesla valve structure; a bypass valve (2-1) is designed on the bypass water channel (1-1), and a main valve (3) is designed on the main channel (1); when the main road (1) works, the main valve (3) opens the bypass valve (2-1) and closes; when the main channel (1) needs to be shut off, the bypass valve (2-1) is closed first, so that the main channel (1) and the bypass water channel (1-1) form a Tesla valve together, the flow rate of a fluid channel is reduced, and then the main valve (3) is closed.
2. A method of reducing the effect of water hammer as claimed in claim 1, wherein: the bypass water channel (1-1) is a pipeline or a groove.
3. A method of reducing the effect of water hammer as claimed in claim 1, wherein: the main channel (1) is a pipeline or a groove.
4. A method of reducing the effect of water hammer as claimed in claim 1, wherein: the bypass valve (2-1) is a pipeline valve or a gate.
5. A method of reducing the effect of water hammer as claimed in claim 1, wherein: the main channel (1) is a pipeline valve or a gate.
6. A method of reducing the effect of water hammer as claimed in claim 1, wherein: the number of the bypass water channels (1-1) is more than or equal to 2, and each bypass water channel (1-1) is provided with a bypass valve (2-1).
7. A method of reducing the effect of water hammer as claimed in claim 1, wherein: the bypass valve (2-1) is an electromagnetic valve.
8. A flow shutoff system characterized by: comprises a main channel (1), a bypass water channel (1-1), a main valve (3) and a bypass valve (2-1);
the bypass water channel (1-1) is positioned on the side surface of the main channel (1), the bypass water channel (1-1) and the main channel (1) jointly form a Tesla valve structure, and the fluid direction of the fluid channel is the high resistance direction of the Tesla valve structure; the bypass valve (2-1) is positioned on the liquid flow path of the bypass water channel (1-1), and the main valve (3) is positioned on the liquid flow path of the main channel (1); when the main road (1) works, the main valve (3) opens the bypass valve (2-1) and closes; when the main channel (1) needs to be shut off, the bypass valve (2-1) is closed first, so that the main channel (1) and the bypass water channel (1-1) form a Tesla valve together, the flow rate of a fluid channel is reduced, and then the main valve (3) is closed.
9. Hydraulic engineering, its characterized in that: the method of reducing water hammer effect of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175940.6A CN112228684A (en) | 2020-10-29 | 2020-10-29 | Method for reducing water hammer effect, liquid flow shutoff system and hydraulic engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175940.6A CN112228684A (en) | 2020-10-29 | 2020-10-29 | Method for reducing water hammer effect, liquid flow shutoff system and hydraulic engineering |
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| Publication Number | Publication Date |
|---|---|
| CN112228684A true CN112228684A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011175940.6A Withdrawn CN112228684A (en) | 2020-10-29 | 2020-10-29 | Method for reducing water hammer effect, liquid flow shutoff system and hydraulic engineering |
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| CN (1) | CN112228684A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307450A (en) * | 2021-05-27 | 2021-08-27 | 公安县佳源水务有限公司 | Diversion system in sewage treatment system |
| CN113819252A (en) * | 2021-11-24 | 2021-12-21 | 江苏云端智能科技有限公司 | Water-flow overload impact-proof water delivery pipe stop valve device |
| CN114343526A (en) * | 2021-12-31 | 2022-04-15 | 安克创新科技股份有限公司 | Mixing tube, mixing device and cleaning equipment |
| DE102021106234A1 (en) | 2021-03-15 | 2022-09-15 | Bayerische Motoren Werke Aktiengesellschaft | TESLA VALVE FOR AN AUTOMOTIVE VEHICLE FLUID DISCHARGE |
| CN116479196A (en) * | 2023-05-05 | 2023-07-25 | 秦冶工程技术(北京)有限责任公司 | Combined high-efficiency energy-saving environment-friendly blast furnace damping-down gas recovery device |
| US11920720B2 (en) * | 2021-05-14 | 2024-03-05 | Saudi Arabian Oil Company | System and method for mitigating water hammer by looping surge pressure |
| CN116479196B (en) * | 2023-05-05 | 2024-06-11 | 秦冶工程技术(北京)有限责任公司 | Combined blast furnace damping down gas recovery device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657586A1 (en) * | 1976-12-18 | 1978-06-22 | Olympia Werke Ag | Pressure surge suppression unit for ink jet printer - has Tesla valve positioned where ink feed channel enters spray head |
| SU806980A1 (en) * | 1979-05-03 | 1981-02-23 | Государственный Научно-Исследова-Тельский Институт Машиноведения Им.Академика A.A.Благонравова | Pressure oscillation damping method |
| JPH06273077A (en) * | 1993-03-16 | 1994-09-30 | Hitachi Ltd | Apparatus and method for preventing water hammer of coolant pipe of condenser of steam turbine plant |
| GEP20125501B (en) * | 2010-06-25 | 2012-04-25 | Device for protecting multistage hydrotransport system against hydraulic shock | |
| CN107850268A (en) * | 2015-09-18 | 2018-03-27 | 流动科技株式会社 | Possess water piping system and its control method with the check-valves for crashing mitigation capability |
| CN111236361A (en) * | 2018-11-28 | 2020-06-05 | 西安理工大学 | Bypass pipeline water hammer protection method |
-
2020
- 2020-10-29 CN CN202011175940.6A patent/CN112228684A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657586A1 (en) * | 1976-12-18 | 1978-06-22 | Olympia Werke Ag | Pressure surge suppression unit for ink jet printer - has Tesla valve positioned where ink feed channel enters spray head |
| SU806980A1 (en) * | 1979-05-03 | 1981-02-23 | Государственный Научно-Исследова-Тельский Институт Машиноведения Им.Академика A.A.Благонравова | Pressure oscillation damping method |
| JPH06273077A (en) * | 1993-03-16 | 1994-09-30 | Hitachi Ltd | Apparatus and method for preventing water hammer of coolant pipe of condenser of steam turbine plant |
| GEP20125501B (en) * | 2010-06-25 | 2012-04-25 | Device for protecting multistage hydrotransport system against hydraulic shock | |
| CN107850268A (en) * | 2015-09-18 | 2018-03-27 | 流动科技株式会社 | Possess water piping system and its control method with the check-valves for crashing mitigation capability |
| CN111236361A (en) * | 2018-11-28 | 2020-06-05 | 西安理工大学 | Bypass pipeline water hammer protection method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021106234A1 (en) | 2021-03-15 | 2022-09-15 | Bayerische Motoren Werke Aktiengesellschaft | TESLA VALVE FOR AN AUTOMOTIVE VEHICLE FLUID DISCHARGE |
| US11920720B2 (en) * | 2021-05-14 | 2024-03-05 | Saudi Arabian Oil Company | System and method for mitigating water hammer by looping surge pressure |
| CN113307450A (en) * | 2021-05-27 | 2021-08-27 | 公安县佳源水务有限公司 | Diversion system in sewage treatment system |
| CN113819252A (en) * | 2021-11-24 | 2021-12-21 | 江苏云端智能科技有限公司 | Water-flow overload impact-proof water delivery pipe stop valve device |
| CN114343526A (en) * | 2021-12-31 | 2022-04-15 | 安克创新科技股份有限公司 | Mixing tube, mixing device and cleaning equipment |
| CN116479196A (en) * | 2023-05-05 | 2023-07-25 | 秦冶工程技术(北京)有限责任公司 | Combined high-efficiency energy-saving environment-friendly blast furnace damping-down gas recovery device |
| CN116479196B (en) * | 2023-05-05 | 2024-06-11 | 秦冶工程技术(北京)有限责任公司 | Combined blast furnace damping down gas recovery device |
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Application publication date: 20210115 |