CN203718389U - Characteristic control device for water hammer harmonic waves - Google Patents
Characteristic control device for water hammer harmonic waves Download PDFInfo
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- CN203718389U CN203718389U CN201420006095.3U CN201420006095U CN203718389U CN 203718389 U CN203718389 U CN 203718389U CN 201420006095 U CN201420006095 U CN 201420006095U CN 203718389 U CN203718389 U CN 203718389U
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- harmonic wave
- fluid conveying
- water attack
- conveying pipe
- water hammer
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Abstract
The utility model discloses a characteristic control device for water hammer harmonic waves. The control device is mainly composed of a power source, a water hammer harmonic wave generating device, a water hammer harmonic wave testing device and a water hammer harmonic wave control device, and is characterized in that the structure characteristics of a fluid conveying pipeline system are utilized, the power source is arranged at the left end of the fluid conveying pipeline, a high-frequency electromagnetic valve is arranged at the right end of the fluid conveying pipeline, a vibrating sensor, an acceleration sensor and a force sensor are respectively arranged in the left, middle and right of the fluid conveying pipeline, and the vibration amplitudes, frequencies and applied force of the fluid conveying pipeline under the function of the water hammer harmonic waves can be acquired by a data acquisition device; the vibration amplitudes, frequencies and applied force of the fluid conveying pipeline are converted to the vibration amplitudes, frequencies and applied force of the water hammer harmonic waves, a control signal PLC (Programmable Logic Controller) is output to further control the starting and closing actions of the high frequency electromagnetic valve according to the control requirements to the water hammer harmonic waves in an actual engineering, so that an aim of controlling the water hammer harmonic waves can be reached, and the effects of qualitatively and controlling the unavoidable water hammer phenomenon in the fluid conveying pipeline system can be realized.
Description
Technical field
The present invention relates to a kind of characterstic controller of water attack harmonic wave, specifically by sensor, data acquisition unit and control gear etc., control the humorous wave amplitude of water attack and frequency, thereby obtain the characteristic of water attack harmonic wave, for defeated streaming system field tests.
Background technique
In fluid conveying pipe, thereby the variation that the flow velocity of liquid is occurred sharply due to the keying of valve causes that the phenomenon that pressure fluctuates widely is called as water attack.The energy of water attack is to propagate with the form of pressure wave, and this pressure wave is also referred to as surge wave.When valve is done regular high frequency keying, form regular surge wave in pipeline, we are called water attack harmonic wave.Water attack Harmonic Theory is the frontier nature problem of studying in numerous industrial field such as current Aero-Space, petrochemical industry, hydraulic and electric engineering, hydraulic transmission.Water attack can cause the sharply variation of pressure in pipeline and destroy fluid conveying pipe, causes interruption of service, and fluid conveying pipe net is complicated, and the surge wave complexity of formation is various, has increased research difficulty.Therefore design and a kind ofly test the device that water attack involves water attack harmonic characterisitic and have very important significance.
Patent CN102162794A discloses a kind of water attack harmonic wave breakdown of emulsion test method and device of emulsification fluid, mainly comprise: with transparent water attack harmonic wave breakdown of emulsion tank body and the image collecting device of water droplet movement locus in emulsification fluid to be tested, described image collecting device place is provided with and drives described image collecting device to do front and back, left and right and the upper and lower reciprocating transmission of three-dimensional and positioning device, transparent tank body one side of described emulsification fluid to be tested is provided with provides the drive unit of power and on-line moisture determination instrument, opposite side is provided with for the water droplet of oil emulsion liquid to be tested being provided to start-stop device and the on-line moisture determination instrument of the humorous wave force of water attack, and for controlling the data capture of processing described driving and transmission device and start-stop device work, processing system and control system, the motion morphology of water droplet in can Real-time Collection breakdown of emulsion process, realizing automation processes.This device has just applied to the characteristic of water attack harmonic wave, does not illustrate the production process of water attack harmonic wave, does not also set forth concrete control system and controls water attack harmonic wave.
Water attack harmonic wave produces when in pipeline, flow rate of liquid occurs sharply to change, generally the keying by valve causes, it is the variation of the energy of self, do not need external energy, the generation of testing the physical property of water attack harmonic wave and controlling water attack harmonic wave by feedback control system by designing a kind of testing apparatus of water attack harmonic wave, applies to water attack harmonic wave in engineering application and has very important significance.
Summary of the invention
In order to understand the physical property of water attack harmonic wave, prevent surge wave to the harm of fluid conveying pipe and better utilize water attack Harmonic Theory, the present invention proposes a kind of characterstic controller of water attack harmonic wave, for further understanding and utilizing water attack harmonic wave that reliable support is provided.
A kind of characterstic controller of water attack harmonic wave is mainly comprised of power source, water attack harmonic wave generating device, water attack harmonic wave testing apparatus and water attack harmonic wave control gear, it is characterized in that, at the left end of fluid conveying pipe, power source is set, mainly fuel tank, filter, oil pump, stop valve 1, stop valve 2 and accumulator, consist of, described power source is to delivering oil in fluid conveying pipe; Right-hand member at fluid conveying pipe arranges high-frequency electromagnetic valve, forms water attack harmonic wave generating device with fluid conveying pipe, forms water attack harmonic wave in fluid conveying pipe; Left end, centre and right end position place at fluid conveying pipe arrange respectively vibration transducer, acceleration transducer and power sensor, form water attack harmonic wave testing apparatus with data acquisition unit and computer, described water attack harmonic wave testing apparatus is exported control signal by the water attack harmonic wave physical property of fluid with controlling the difference requiring, and drives PLC to produce corresponding action; Be provided with PLC and electrohydraulic proportional controller and form water attack harmonic wave control gear, described water attack harmonic wave control gear forms the closed loop control system of water attack harmonic characterisitic, reaches the object of controlling and utilizing water attack harmonic characterisitic.
The technical solution adopted for the present invention to solve the technical problems is: a kind of characterstic controller of water attack harmonic wave is mainly comprised of power source, water attack harmonic wave generating device, water attack harmonic wave testing apparatus and water attack harmonic wave control gear; Described power source is mainly comprised of fuel tank, filter, oil pump stop valve 1, stop valve 2 and accumulator, it is characterized in that utilizing cooperatively interacting of stop valve 1 and stop valve 2 realize oil pump to accumulator pressurizing and utilize accumulator delivering oil, to avoid the whirling vibration of the oil pump of oil pump to exert an influence to water attack harmonic wave; Open stop valve 2, close stop valve 1, make liquid enter accumulator pressurizing by the effect of oil pump, then close stop valve 2, open stop valve 1, utilize accumulator to delivering oil in fluid conveying pipe.
Described water attack harmonic wave generating device is mainly comprised of fluid conveying pipe, high-frequency electromagnetic valve; It is characterized in that: by high-frequency electromagnetic valve the switching motion flow velocity of realizing fluid conveying pipe inner fluid change, the filler opening place that causes high-frequency electromagnetic valve produces water attack, described water attack is carried out contrary fluid flow direction and is propagated in fluid conveying pipe as water attack incoming wave, after the left end of arrival fluid conveying pipe, form water attack reflected wave, thereby the continuous switching motion along with high-frequency electromagnetic valve, a plurality of water attack incoming waves and water attack reflected wave superpose mutually, form water attack harmonic wave in fluid conveying pipe.
Described water attack harmonic wave testing apparatus is mainly comprised of vibration transducer, acceleration transducer, power sensor, data acquisition unit and computer, the vibration frequency that it is characterized in that vibration transducer test fluid conveying pipe, the vibration amplitude of acceleration transducer test fluid conveying pipe, the effect of vibration power of power sensor test fluid conveying pipe, the output quantity of these 3 sensors is input in data acquisition unit carries out entering computer after the processing such as digital-to-analog conversion, amplification, filtering; Because the numerical value of 3 described sensor tests is coupled vibrations signals of fluid conveying pipe inner fluid and fluid conveying pipe self, thereby the control strategy that extracts the humorous wave frequency of fluid water attack, amplitude and active force is set in computer, control requirement according to Practical Project to water attack harmonic wave, can obtain the water attack harmonic wave physical property of fluid and the difference of control requirement.
Described water attack harmonic wave control gear is mainly comprised of PLC, electrohydraulic proportional controller; It is characterized in that the water attack harmonic wave physical property of fluid and the difference output control signal of control requirement that according to described water attack harmonic wave testing apparatus, obtain, drive PLC to produce corresponding action, then by electrohydraulic proportional controller, control the speed of the switching motion of high-frequency electromagnetic valve, make to produce in fluid conveying pipe the characteristic (frequency, amplitude and active force) of water attack harmonic wave to change, formed the closed loop control system of water attack harmonic characterisitic simultaneously, final realization controlled the water attack harmonic characterisitic forming, and reaches the object of controlling and utilizing water attack harmonic characterisitic.
The invention has the beneficial effects as follows, utilize water attack harmonic wave testing apparatus to control the generation of water attack harmonic wave the physical property of testing water attack harmonic wave, for controlling and utilizing water attack harmonic wave to do basis in early stage; Can in test process, utilize cooperatively interacting of stop valve 1 and stop valve 2 realize oil pump to accumulator pressurizing and utilize accumulator delivering oil, to avoid the whirling vibration of the oil pump of oil pump to exert an influence to water attack harmonic wave; Characteristic that can Real-time Collection water attack harmonic wave, by data acquisition unit, be input to computer, by control strategy, export control signal to PLC again, form closed loop control system, realize automation and process, reduce the impact of personal factor on system, test result reliability is high, and simple in structure, realize and control the water attack harmonic characterisitic forming, reach the object of controlling and utilizing water attack harmonic characterisitic.
accompanying drawing explanation:
Fig. 1 is structural representation of the present invention, is also a kind of embodiment's structural representation.
Fig. 2 is the switching motion schematic diagram of water attack harmonic wave generating device medium-high frequency solenoid valve in Fig. 1.
1---stop valve 1,2---stop valve 2,3---accumulator in figure, 4---oil pump, 5---filter, 6---fuel tank, 7---vibration transducer, 8---data acquisition unit, 9---computer, 10---acceleration transducer, 11---PLC, 12---electrohydraulic proportional controller, 13---power sensor, 14---high-frequency electromagnetic valve, 15---fluid conveying pipe.
embodiment:
Below in conjunction with embodiment, further illustrate technological scheme of the present invention.
Embodiment as shown in Figure 1, first open stop valve 2, close stop valve 1, fluid in fuel tank 6 is transported in accumulator 3 and is stored by oil pump 4, after accumulator 3 is filled, close oil pump 4 and close stop valve 2 simultaneously, avoid the whirling vibration of oil pump affect apparatus of the present invention test, control result.Then open stop valve 1, accumulator 3, as power source, is transported to fluid in fluid conveying pipe 15, enters high-frequency electromagnetic valve 14, and the keying by solenoid valve 14 acts on and in fluid conveying pipe 15, forms water attack harmonic wave.
The concrete production process of water attack harmonic wave is: embodiment as shown in Figure 2, the spool fast moving of high-frequency electromagnetic valve 14 is that the high frequency of high-frequency electromagnetic valve 14 opens and closes, the spool of high-frequency electromagnetic valve 14 moves down, now the entrance P of high-frequency electromagnetic valve 14 and outlet T are communicated with, high-frequency electromagnetic valve 14 is in opening state, and oil circuit is unimpeded; After the spool of high-frequency electromagnetic valve 14 moves up, the entrance P of high-frequency electromagnetic valve 14 is blocked by spool, now high-frequency electromagnetic valve 14 is in closed condition, oil circuit is blocked, thereby the flow velocity of fluid occurs to change rapidly and produces a surge wave, described water attack is carried out contrary fluid flow direction and is propagated in fluid conveying pipe 15 as water attack incoming wave, after the left end of arrival fluid conveying pipe 15, form water attack reflected wave, thereby the continuous switching motion along with high-frequency electromagnetic valve 14, a plurality of water attack incoming waves and water attack reflected wave superpose mutually, form water attack harmonic wave in fluid conveying pipe.
After producing water attack harmonic wave, utilize vibration transducer 7, acceleration transducer 10 and power sensor 13 gather the numerical value of the humorous wave amplitude of water attack, frequency and active force and by data acquisition unit 8 and computer 9, the control signal after processing are fed back to PLC11, then the speed of switching motion of adjusting high-frequency electromagnetic valves 14 by PLC11 and electrohydraulic proportional controller 12 is to reach the object that produces certain water attack harmonic wave in fluid conveying pipe 15.
Claims (2)
1. the characterstic controller of a water attack harmonic wave is mainly comprised of power source, water attack harmonic wave generating device, water attack harmonic wave testing apparatus and water attack harmonic wave control gear, it is characterized in that, at the left end of fluid conveying pipe, power source is set, described power source is mainly comprised of fuel tank, filter, oil pump, stop valve 1, stop valve 2 and accumulator, and described power source is to delivering oil in fluid conveying pipe; Right-hand member at fluid conveying pipe arranges high-frequency electromagnetic valve, forms water attack harmonic wave generating device with fluid conveying pipe, and described water attack harmonic wave generating device forms water attack harmonic wave in fluid conveying pipe; Left end, centre and right end position place at fluid conveying pipe arrange respectively vibration transducer, acceleration transducer and power sensor, form water attack harmonic wave testing apparatus with data acquisition unit and computer; Be provided with PLC and electrohydraulic proportional controller and form water attack harmonic wave control gear.
2. the characterstic controller of a kind of water attack harmonic wave according to claim 1, it is characterized in that arranging in described water attack harmonic wave testing apparatus the vibration frequency of vibration transducer test fluid conveying pipe, the vibration amplitude of acceleration transducer test fluid conveying pipe is set, the effect of vibration power of power sensor test fluid conveying pipe is set, and the output quantity of these 3 sensors is input in data acquisition unit carries out entering computer after the processing such as digital-to-analog conversion, amplification, filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006095.3U CN203718389U (en) | 2014-01-06 | 2014-01-06 | Characteristic control device for water hammer harmonic waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006095.3U CN203718389U (en) | 2014-01-06 | 2014-01-06 | Characteristic control device for water hammer harmonic waves |
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| Publication Number | Publication Date |
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| CN203718389U true CN203718389U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420006095.3U Expired - Fee Related CN203718389U (en) | 2014-01-06 | 2014-01-06 | Characteristic control device for water hammer harmonic waves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355684A (en) * | 2017-07-19 | 2017-11-17 | 中国水利水电科学研究院 | A kind of accident of pipeline network waterpower monitoring experimental system and its method for realizing fault identification |
-
2014
- 2014-01-06 CN CN201420006095.3U patent/CN203718389U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355684A (en) * | 2017-07-19 | 2017-11-17 | 中国水利水电科学研究院 | A kind of accident of pipeline network waterpower monitoring experimental system and its method for realizing fault identification |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20150106 |
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| EXPY | Termination of patent right or utility model |