CN204729831U - Stablize for DEH pipe-line system hydrodynamic pressure and the device cut down of pulsing - Google Patents
Stablize for DEH pipe-line system hydrodynamic pressure and the device cut down of pulsing Download PDFInfo
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- CN204729831U CN204729831U CN201520292237.1U CN201520292237U CN204729831U CN 204729831 U CN204729831 U CN 204729831U CN 201520292237 U CN201520292237 U CN 201520292237U CN 204729831 U CN204729831 U CN 204729831U
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Abstract
A kind of device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement, comprise pressure cavity, pressure cavity two ends are hemispherical end socket, centre is hollow circuit cylinder cylinder, uniform flow orifice is provided with in pressure cavity, uniform flow orifice diameter mates with pressure cavity internal diameter, two chambers sized by pressure cavity is divided by uniform flow orifice, air bag is provided with in large chamber, capacitor is provided with fluid input tube road, fluid input tube road is passed into by the hemispherical end socket top of capacitor, fluid input tube road end extends to large chamber through orifice plate, the hollow circuit cylinder cylinder barrel place of capacitor side is provided with fluid delivery pipeline.The utility model is linked in DEH pipe-line system, can either hydrodynamic pressure in stable system, can also effectively eliminate simultaneously Installed System Memory pressure pulsation, ensure that the safety and stability of system.
Description
Technical field
The utility model relates to a kind of transmission fluid, stablizes and the device cut down of pulsing in particular for DEH pipe-line system hydrodynamic pressure.
Background technique
DEH(high pressure fireresistant oil digital electro-hydraulic controls) system is a kind of technological means that control field is conventional, plays an important role in turbine speed control, spatial load forecasting etc.This system by the work of all parts in the liquid control system with certain pressure, so the stability of hydrodynamic pressure and the reliable operation of associated mechanical components are the keys of this system worked well.Under normal circumstances, the fluid pressure pulse that the pressure supply unit of this system brings produces considerable influence to system.First, the work of this system is based on stable hydrodynamic pressure, and unstable hydrodynamic pressure can cause the precision of whole system to reduce, and even loses efficacy; Secondly, in DEH pipeline, the pressure pulsation of fluid runs into the parts such as elbow, reducing and threeway and can produce impact force, reach each support and basic components simultaneously and cause vibration, form mechanical noise, this not only can affect performance and the functional reliability of DEH system, and can cause coupling loosen, leak, make the component wear such as the pipeline in system, instrument, pipe vibration can be caused time serious to rupture, thus system cannot be worked.Therefore, the pressure of stable system inner fluid, and effectively cut down pressure pulsation, the working stability improving system is even more important.For the problem of resolution system pressure stability, be increase accumulator on pressure piping under prior art.But when fluid pulsation frequency is larger, because sensitivity is lower, accumulator often cannot play the effect of abatement pressure pulsation.And, the connection of accumulator and pipeline often adopts threeway form, and fluid greatly is not entered in accumulator, and this just can not ensure that fluid pressure pulse is fully cut down, even can form an excitation force in threeway place, the stable of pressure also can be under some influence.In pressure pulsation, in order to control the impact of fluid pressure pulse on system, generally take following method: 1, on pipeline, increase damping device, this method effectively can reduce pressure pulsation, but the stable effect played of system internal pressure is less; 2, reduce the quantity of elbow and tapered pipeline in pipeline, minimizing elbow and reducing quantity can reduce excitation force number, but can occur elbow or reducing in piping, and therefore the method can only reduce pipe vibration to a certain extent; 3, set up pipe clamp, at elbow two ends, each arm of threeway and vibration larger portion position constraint is set, thus constraint piping, reduce vibration.But due to the long-term existence of excitation force, loosening of pipe clamp can be caused, constraint was lost efficacy, even can rupture, cause the flip-flop of system mode, cause catastrophic failure; 4, vibration damper is increased.The method increases shock-absorbing means in vibration larger portion position, reduced by the energy of pulsation-induced vibration.But the absorbing limited capacity of this method, the effect of performance is also less; 5, orifice plate weakening is applied, orifice plate is installed additional in pipeline appropriate location, Standing pressure waves in pipeline section can be become row ripple, thus avoid the vibration of fluid column in pipeline, but the method does not avoid elbow or the reducing of the pressure pulsation impact pipeline in cycle, does not just have the excitation force in abatement system yet.In sum, prior art still lacks and integrates pressure stability and the device cutting down, have versatility of pulsing.
Model utility content
The purpose of this utility model is the drawback for prior art, provides a kind of function admirable, complete function, versatility good stablizing for DEH pipe-line system hydrodynamic pressure and the device cut down of pulsing.
The purpose of this utility model is achieved through the following technical solutions:
A kind of device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement, comprise pressure cavity, pressure cavity two ends are hemispherical end socket, centre is hollow circuit cylinder cylinder, uniform flow orifice is provided with in pressure cavity, uniform flow orifice diameter mates with pressure cavity internal diameter, two chambers sized by pressure cavity is divided by uniform flow orifice, air bag is provided with in large chamber, capacitor is provided with fluid input tube road, fluid input tube road is passed into by the hemispherical end socket top of capacitor, fluid input tube road end extends to large chamber through orifice plate, the hollow circuit cylinder cylinder barrel place of capacitor side is provided with fluid delivery pipeline.
The above-mentioned device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement, described air bag volume is the 85-90% of large cavity volume, is provided with air chamber gas charging valve on the hemispherical end socket top of large chamber side, and air chamber gas charging valve connects air bag.
The above-mentioned device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement, described uniform flow orifice is positioned at 1/3 place of pressure cavity length, and uniform flow orifice distributes equal discharge orifice, and the equal discharge orifice gross area is 8-12 times of fluid input tube road flow area.
The above-mentioned device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement, described fluid input tube road is vertical with fluid delivery pipeline, and fluid input tube road and fluid delivery pipeline equal diameters, the end in fluid input tube road is provided with valve.
The above-mentioned device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement, described hollow circuit cylinder cylinder internal diameter is 8-10 times of fluid input tube road internal diameter.
The utility model is for the problem solving transmission fluid pressure instability and abatement pressure pulsation, to prior art exist complex structure, function singleness, performance difficulty problem improve, propose a kind of stablize for DEH pipe-line system hydrodynamic pressure and pulse cut down device.Described apparatus main body is the cavity of hollow circuit cylinder cylinder and two hemispherical head compositions, centre is provided with uniform flow orifice, cavity is divided into size two chambers, arranges in large chamber and compressible gas air bag is housed, stable by the guarantee system that the arranges internal pressure of air bag; By the ingehious design of uniform flow orifice, fluid input tube road, fluid delivery pipeline, the pulsation of fluid is cushioned fully.The utility model is linked in DEH pipe-line system, can either hydrodynamic pressure in stable system, can also effectively eliminate simultaneously Installed System Memory pressure pulsation, ensure that the safety and stability of system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of orifice plate;
Fig. 3 is the utility model using state schematic diagram.
In figure, each list of reference numerals is: 1, pressure cavity, 1-1, capacitor, 1-2, large chamber, 2, uniform flow orifice, and 2-1, all discharge orifice, 3, fluid input tube road, 4, valve, 5, air bag, 6, air chamber gas charging valve, 7, fluid delivery pipeline, 8, storage tank, 9, oil pump, 10, fluid input tube road.
Embodiment
Referring to Fig. 1, the device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement described in the utility model, comprise pressure cavity 1, pressure cavity two ends are hemispherical end socket, and centre is hollow circuit cylinder cylinder.In pressure cavity, be provided with uniform flow orifice 2, uniform flow orifice diameter mates with pressure cavity internal diameter, two chambers sized by pressure cavity is divided by uniform flow orifice.In large chamber 1-2, be provided with air bag 5, air bag volume is the 85-90% of large cavity volume, and be provided with air chamber gas charging valve 6 on the hemispherical end socket top of large chamber side, air chamber gas charging valve connects air bag.When system fluid pressure increases, stored by the pressure of the gas volume in compressing gasbag by increase, when system fluid pressure reduces, air bag by the earth pressure release of storage out, so, air bag existence is set and effectively can ensures the stable of system internal pressure.Capacitor 1-1 is provided with fluid input tube road 3, and fluid input tube road is passed into by the hemispherical end socket top of capacitor, and fluid input tube road end extends to large chamber through orifice plate, and the hollow circuit cylinder cylinder barrel place of capacitor side is provided with fluid delivery pipeline 7.Fluid input tube road 3 is vertical with fluid delivery pipeline 7 to be arranged, and the end in fluid input tube road is provided with valve 4.Fluid input tube road and fluid delivery pipeline leave interface in pressure cavity outer end, respectively in order to Bonding pressure fluid supply apparatus and follow-up pipe-line system.
Referring to Fig. 1, Fig. 2, uniform flow orifice 2 is positioned at cavity length about 1/3 place, and orifice plate distributes equal discharge orifice 2-1, and the equal discharge orifice gross area is 8-12 times of liquid inlet pipe flow area.In illustrated embodiment, equal discharge orifice divides three loops to be distributed on orifice plate, and the equal discharge orifice spaced set of each circle, each equal discharge orifice aperture is D/24, and wherein, D is the internal diameter of pressure cavity.Fluid imports in large chamber by fluid input tube road, returns capacitor, then flow out through fluid delivery pipeline by equal discharge orifice reverse flow.The setting of orifice plate not only adds the waiting time of fluid in pressure cavity body, make it pressure pulsation effectively to be cut down, and all discharge orifice ensure that being uniformly distributed of the temperature of effluent fluid, flow velocity, density, thus system is run under a stable environment.Equal orifice area summation is too small can play throttling action by convection cell, is unfavorable for security of system, if excessive, does not have the effect of current-sharing.As calculated and test, when the gross area of equal discharge orifice is the 8-12 times of fluid input tube road flow area, each characteristic distribution of fluid is better.Fluid enters large cavity by fluid input tube road, returns to little cavity side through equal discharge orifice, and flow out from fluid delivery pipeline, this process makes the pulsation of fluid be cushioned fully.
Referring to Fig. 3, the utility model is linked in the middle of DEH system when using, be arranged on the exit position of DEH system oil pump 9, fluid enters pressure cavity via fluid input tube road, flowed out by fluid delivery pipeline after the pressure pulsation of pressure cavity inner fluid is fully reduced, after each steam valve 10 of parallel connection, flow into fuel tank 8, ensure that the safety of system and stable operation.
Claims (5)
1. stablize and the device cut down of pulsing for DEH pipe-line system hydrodynamic pressure for one kind, it is characterized in that, comprise pressure cavity (1), pressure cavity two ends are hemispherical end socket, centre is hollow circuit cylinder cylinder, uniform flow orifice (2) is provided with in pressure cavity, uniform flow orifice diameter mates with pressure cavity internal diameter, two chambers sized by pressure cavity is divided by uniform flow orifice, air bag (5) is provided with in large chamber, capacitor is provided with fluid input tube road (3), fluid input tube road is passed into by the hemispherical end socket top of capacitor, fluid input tube road end extends to large chamber through orifice plate, the hollow circuit cylinder cylinder barrel place of capacitor side is provided with fluid delivery pipeline (7).
2. the device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement according to claim 1, it is characterized in that, described air bag volume is the 85-90% of large cavity volume, is provided with air chamber gas charging valve (6) on the hemispherical end socket top of large chamber side, and air chamber gas charging valve connects air bag.
3. the device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement according to claim 2, it is characterized in that, described uniform flow orifice (2) is positioned at 1/3 place of pressure cavity length, uniform flow orifice distributes equal discharge orifice (2-1), and the equal discharge orifice gross area is 8-12 times of fluid input tube road flow area.
4. the device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement according to claim 3, it is characterized in that, described fluid input tube road (3) is vertical with fluid delivery pipeline (7), fluid input tube road and fluid delivery pipeline equal diameters, the end in fluid input tube road is provided with valve (4).
5. the device stablized for DEH pipe-line system hydrodynamic pressure and pulse abatement according to claim 4, is characterized in that, described hollow circuit cylinder cylinder internal diameter is 8-10 times of fluid input tube road internal diameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292237.1U CN204729831U (en) | 2015-05-08 | 2015-05-08 | Stablize for DEH pipe-line system hydrodynamic pressure and the device cut down of pulsing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520292237.1U CN204729831U (en) | 2015-05-08 | 2015-05-08 | Stablize for DEH pipe-line system hydrodynamic pressure and the device cut down of pulsing |
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| CN204729831U true CN204729831U (en) | 2015-10-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268686A (en) * | 2017-07-17 | 2019-01-25 | 国家电投集团科学技术研究院有限公司 | Constant-current stabilizer |
| CN109780361A (en) * | 2019-01-28 | 2019-05-21 | 大连大学 | A kind of pipeline wideband fluid pressure pulse damper |
-
2015
- 2015-05-08 CN CN201520292237.1U patent/CN204729831U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268686A (en) * | 2017-07-17 | 2019-01-25 | 国家电投集团科学技术研究院有限公司 | Constant-current stabilizer |
| CN109780361A (en) * | 2019-01-28 | 2019-05-21 | 大连大学 | A kind of pipeline wideband fluid pressure pulse damper |
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