CN102927269A - Volumetric capacity-variable constant-pressure maintenance device of pressure vessel - Google Patents
Volumetric capacity-variable constant-pressure maintenance device of pressure vessel Download PDFInfo
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- CN102927269A CN102927269A CN201210414816XA CN201210414816A CN102927269A CN 102927269 A CN102927269 A CN 102927269A CN 201210414816X A CN201210414816X A CN 201210414816XA CN 201210414816 A CN201210414816 A CN 201210414816A CN 102927269 A CN102927269 A CN 102927269A
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Abstract
The invention aims at providing a volumetric capacity-variable constant-pressure maintenance device of a pressure vessel. The volumetric capacity-variable constant-pressure maintenance device comprises a pressurization system, a pressure vessel system and a volumetric capacity-variable constant-pressure maintenance system which are sequentially connected, wherein the pressurization system comprises a water tank and a pressure test pump; the pressure vessel system comprises a pressure vessel, and the pressure test pump is respectively communicated with the water tank and the pressure vessel; and a one-way valve is mounted between the pressure test pump and the pressure vessel, a pipeline communicated with the water tank is arranged between the pressure test pump and the one-way valve, an overflow valve is mounted on the pipeline, and the pressure vessel is communicated with the volumetric capacity-variable constant-pressure maintenance system. The volumetric capacity-variable constant-pressure maintenance device has the advantages that the occupied space is small, the bulge test of tested equipment by the pressure vessel is realized; the magnitude of pressure in the pressure vessel cannot change along with the volumetric change of the tested equipment; the change of volumetric capacity is realized through the movement of a piston, and accurate regulation can be performed; a close-loop control circuit is constituted, the pressure regulation speed is quick; and accurate constant pressure can be realized through the volumetric capacity-variable constant-pressure maintenance system; and the volumetric capacity-variable constant-pressure maintenance device is simple to operate and convenient to use.
Description
Technical field
What the present invention relates to is a kind of pressure container apparatus.
Background technique
Along with the mankind to the continually developing of ocean, also more and more higher to the requirement of deep ocean work equipment, this just impels us constantly to develop the higher deep ocean work equipment of performance.Must test to check its performance to the equipment of developing, not only waste time and energy yet carry out actual deep-sea test, and the difficult data acquisition of realizing.Therefore each research unit mostly adopts the abyssal environment simulator to carry out bulge test under laboratory environment.Usually Devices to test is placed in the pressurized container, then by high-pressure service pump liquid is squeezed in the pressurized container, with the high pressure of simulated deep-sea environment.
Usually the pressurized container volume can not be too large, again because the compressibility of water is very little, when Devices to test moves, the equipment own vol is changed, thereby cause liquid volume variation in the pressurized container, when driving rotation such as the Controller of Underwater Manipulator joint by hydraulic cylinder extension, the own vol increase diminished the interior liquid capacity of pressurized container when the piston rod of oil hydraulic cylinder stretched out, water is compressed, vessel internal pressure power sharply raises, and own vol dwindles liquid capacity is increased when piston rod is retracted, and vessel internal pressure power can decline to a great extent again.Yet in the certain ocean of the degree of depth, no matter how mechanism hand moves, its seawater pressure is substantially constant, for this type of situation about testing in its laboratory abyssal environment simulator (pressurized container) and the actual deep-sea very big-difference is arranged.Its reason is that the high pressure in the deep-sea is because seawater gravity causes, and the high pressure in the pressurized container is to be filled with liquid by limited confined space its compression is caused.Size and the vessel volume of the fluctuation of seal-off pressure container inner pressure are inversely proportional to.
The most pressurized container all is to be that pressurized container is suppressed by pressurizing system directly, seldom has to consider that liquid capacity changes the pressure variation that causes in the pressurized container.The author who is published in " ocean engineering " is Fei Yufang, mention in the article of Xie Kaijun " simulation test of deep-sea hydraulic systems and components " and rely on the gravity type accumulator to keep reservoir pressure stable, but the noon of gravity type accumulator is because the inertia of itself, response lag is obvious when pressure changes at a high speed, and easily causes the concussion of pressure.
Summary of the invention
The object of the present invention is to provide and overcome a kind of pressurized container capacity constant voltage holding device that the pressure that causes when the equipment under test own vol changes in the pressurized container significantly changes.
The object of the present invention is achieved like this:
A kind of pressurized container capacity of the present invention constant voltage holding device, it is characterized in that: comprise the pressurizing system, pressure vessel systems, the capacity constant voltage keeping system that link to each other successively, pressurizing system comprises water tank, hydraulic test pump, pressure vessel systems comprises pressurized container, hydraulic test pump is joining water box and pressurized container respectively, between hydraulic test pump and pressurized container, one-way valve is installed, the pipeline communication water tank is set between hydraulic test pump and one-way valve, on this pipeline relief valve is installed, pressurized container is communicated with capacity constant voltage keeping system.
The present invention can also comprise:
1, described capacity constant voltage keeping system comprises piston hydraulic pressure chamber, accumulator, oil hydraulic pump, fuel tank, piston hydraulic pressure chamber one end is communicated with pressurized container, the other end is communicated with respectively accumulator, oil hydraulic pump, fuel tank, the keeping system relief valve is set between piston hydraulic pressure chamber and the fuel tank, and oil hydraulic pump is communicated with fuel tank.
2, described pressure vessel systems also comprises pressure transducer, pressure transducer is installed on the pressurized container, capacity constant voltage keeping system comprises piston hydraulic cylinder, nut, leading screw, drive motor, drive motor controller, piston hydraulic cylinder one end is communicated with pressurized container, the other end and nut and is connected, nut connects leading screw, drive motor connects and the driving leading screw, drive motor controller is Bonding pressure sensor and drive motor respectively, and drive motor controller receives pressure sensor signal and controls that drive motor turns to and rotating speed.
Advantage of the present invention is:
(1) takies very little space and realize that pressurized container is to the bulge test of tested equipment;
(2) vessel internal pressure power size does not change with tested equipment volume;
(3) by the mobile variation that realizes volume of piston, can carry out fine adjustment;
(4) consist of close loop control circuit, the pressure governing speed is fast;
(5) can also realize accurate level pressure by capacity constant voltage keeping system;
(6) device is simple to operate, practical and convenient.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is pressurizing system;
Fig. 3 is pressurized container;
Fig. 4 is capacity constant voltage maintainer;
Pressurized container constant voltage holding device structural representation when Fig. 5 is the motor as power source.
Embodiment
For example the present invention is described in more detail below in conjunction with accompanying drawing:
Mode of execution 1:
In conjunction with Fig. 1～4, this device is comprised of pressure vessel systems 2, pressurizing system 1 and capacity constant voltage keeping system 3 three parts.Pressure vessel systems is mainly pressurized container 9, also comprises the auxiliaries such as some instrument valves; Pressurizing system 1 is comprised of with hydraulic test pump 6, relief valve 5 and one-way valve 7 water pressure generation; Capacity constant voltage keeping system 3 is comprised of piston hydraulic cylinder 10, accumulator 11, relief valve 12, oil hydraulic pump 13 and fuel tank 14.Pressurizing system 1 is communicated with by high-pressure rubber pipe and pressure vessel systems 2 one sides, and capacity constant voltage keeping system 3 is communicated with by high-pressure rubber pipe and pressure vessel systems 2 opposite sides.Pressurized container 9 is communicated with the rodless cavity of piston hydraulic cylinder 10, the rod chamber of piston hydraulic cylinder 10 is communicated with accumulator 11, accumulator 11 need to be filled with the gas of certain pressure in advance, the oil hydraulic cylinder rod chamber is connected respectively to filler opening and oil hydraulic pump 13 oil outlets of relief valve 12 simultaneously by pipeline, the oil outlet of relief valve 12 links to each other with fuel tank 14 with oil hydraulic pump 13 filler openings.Pressurized container 9 opposite sides are connected with hydraulic test pump 6 with water pressure generation by pipeline, and water pressure generation is driven by motor 7 with hydraulic test pump 6.
Pressurized container 9 interior installation equipment under tests, pressurized container 9 are suppressed water intake and water pressure generation and are connected by high-pressure rubber pipe with hydraulic test pump 6, water pressure generation with hydraulic test pump 6 with in the water injection pressure container 9 in the water tank 4.Pressurized container 9 is connected used high-pressure rubber pipe diameter with piston hydraulic cylinder 10 should select higher value, and the liquid in pressurized container 9 and the piston hydraulic cylinder 10 can flow rapidly like this.Water in the rodless cavity of piston hydraulic cylinder 10, oil in the rod chamber, diameter of piston rod should select higher value, the pressure of rod chamber is greater than rodless cavity at this moment, even the viscosity of water is less than oil, do not let out in can not occurring yet, and increase that diameter of piston rod can also make because piston rod movement causes the fluid that additionally flows out from relief valve 12 to reduce, can reduce like this fluctuation before the pressure balance.Accumulator 11 is communicated with piston hydraulic cylinder 10 rod chambers, and when piston occured to move suddenly, unnecessary fluid at first entered accumulator 11, then flows back to fuel tank 14 by relief valve 12.The gas that accumulator 11 is filled with in advance should mate with test pressure, and accumulator should select larger volume, and the larger absorption pressure fluctuation of volume is better.Water tank 4 is that common water container gets final product, and notes simultaneously the cleaning of water, in order to avoid stop up water pressure generation hydraulic test pump 6.Water pressure generation connects relief valve 5 and one-way valve 7 with hydraulic test pump 6, screw one-way valve 7 when suppressing, then first relief valve 5 being unscrewed makes water flow out from flow-off, slowly screw again relief valve 5 and note simultaneously pressurized container 9 pressure gauge registrations, when the pressure gauge registration soon reaches required test pressure, unscrew immediately relief valve 5.Then unscrew relief valve 12, primer fluid press pump 13, then turn relief valve 12 slowly makes hydraulic test pump pressure gauge registration rise to predetermined value.Fuel tank 14 provides fluid for oil hydraulic pump 13, and oil hydraulic pump 13 is driven by motor 15.By the flow-pressure characteristic of relief valve as can be known, during normal operation, relief valve 12 should be in opening state, and selects large flow relief valve, and this moment, the pressure surge that causes was less when the relief valve flow changes.
Specific works process of the present invention is as follows: at first tested equipment is put into pressurized container 9, close the pressurized container loam cake, open the top outlet valve, opening water pressure generation uses hydraulic test pump 6 toward the interior water-filling of tanks, close exhaust port after in tank, being full of water and discharging water by exhaust port, then regulate the water pressure generation relief valve 5 of hydraulic test pump 6 water outlets connection and the relief valve 12 in pressurized container 9 opposite side fluid loops, make vessel internal pressure power reach test pressure and make that piston mediates in the piston hydraulic cylinder 10, this moment, piston both sides institute liquid body thrust equated.Just can allow tested equipment moving to test this moment.When tested equipment volume increases, pressurized container 9 internal volumes reduce fluid pressure and rise, so piston hydraulic cylinder 10 rodless cavities one side hydraulic pressure rises simultaneously owing to being communicated with pressure by pipeline with pressurized container 9, this moment, piston hydraulic cylinder piston both sides were subjected to force unbalance, in the piston hydraulic cylinder rodless cavity liquid to the thrust of piston greater than the thrust of liquid in the rod chamber to piston, this moment, piston moved to the rod chamber direction, pressurized container 9 interior unnecessary liquid enter piston hydraulic cylinder 10 rodless cavities through pipeline, and the fluid of piston hydraulic cylinder 10 rod chambers at first enters accumulator 11, then flows back to gradually fuel tank 14 by relief valve 12.Because relief valve 12 set pressures are constant, so the fluid pressure of piston hydraulic cylinder 10 rod chambers one side keeps original pressure level substantially constant, reduce owing to the liquid outflow pressure in the pressurized container 9, be that piston hydraulic cylinder 10 rodless cavities one side liquid reduces piston thrust, when piston movement arrives a certain position, piston both sides stress balance, if piston continues to move to the rod chamber direction, then thereby rodless cavity pressure continues to reduce to make the piston rodless cavity stressed less than rod chamber, piston movement direction and stressed opposite direction, to slow down piston at this moment until stop then reversing motion, owing to the effect of damping, piston finally stops at the equilibrium position.This moment, piston both sides institute liquid body thrust equated, and piston rod chamber internal pressure and initial time are basic identical, and piston hydraulic cylinder 10 rodless cavity internal pressures equal initial time pressure as can be known, and namely the pressure in the pressurized container 9 is identical with initial time.In like manner, when tested equipment volume reduced, the pressure in the pressurized container 9 was also identical with initial time.This process has realized that namely the capacity constant voltage of pressurized container 9 keeps.
Mode of execution 2:
In conjunction with Fig. 5, the another kind of implementation of the invention: the piston rod of piston hydraulic cylinder 10 is fixedly connected with nut 16, and nut 16 cooperates with leading screw 17.Leading screw 17 two ends are connected in base plate by bearing, bearing support, and leading screw 17 projecting shafts are connected (but the front acceleration and deceleration device of motor) by coupling with the axle of motor 18.Leading screw 17 is by motor 18 driven rotary, and rotatablely moving of leading screw 17 changed the straight line motion of nut 16 into.Nut 16 is realized the pressure of pressurized container 9 is regulated together with the piston move left and right.Pressure size in the pressurized container 9 is passed to controller 20 by pressure transducer 21, and 20 pairs of signals of controller detect comparison, then control motor driver 19, and motor driver 19 drive motor 18 are by certain turning to and rotational speed.
Claims (3)
1. pressurized container capacity constant voltage holding device, it is characterized in that: comprise the pressurizing system, pressure vessel systems, the capacity constant voltage keeping system that link to each other successively, pressurizing system comprises water tank, hydraulic test pump, pressure vessel systems comprises pressurized container, hydraulic test pump is joining water box and pressurized container respectively, between hydraulic test pump and pressurized container, one-way valve is installed, the pipeline communication water tank is set between hydraulic test pump and one-way valve, on this pipeline relief valve is installed, pressurized container is communicated with capacity constant voltage keeping system.
2. a kind of pressurized container capacity constant voltage holding device according to claim 1, it is characterized in that: described capacity constant voltage keeping system comprises piston hydraulic pressure chamber, accumulator, oil hydraulic pump, fuel tank, piston hydraulic pressure chamber one end is communicated with pressurized container, the other end is communicated with respectively accumulator, oil hydraulic pump, fuel tank, the keeping system relief valve is set between piston hydraulic pressure chamber and the fuel tank, and oil hydraulic pump is communicated with fuel tank.
3. a kind of pressurized container capacity constant voltage holding device according to claim 1, it is characterized in that: described pressure vessel systems also comprises pressure transducer, pressure transducer is installed on the pressurized container, capacity constant voltage keeping system comprises piston hydraulic cylinder, nut, leading screw, drive motor, drive motor controller, piston hydraulic cylinder one end is communicated with pressurized container, the other end and nut are connected, nut connects leading screw, drive motor connects and the driving leading screw, drive motor controller is Bonding pressure sensor and drive motor respectively, and drive motor controller receives pressure sensor signal and controls that drive motor turns to and rotating speed.
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| CN201210414816XA CN102927269A (en) | 2012-10-26 | 2012-10-26 | Volumetric capacity-variable constant-pressure maintenance device of pressure vessel |
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| CN201210414816XA CN102927269A (en) | 2012-10-26 | 2012-10-26 | Volumetric capacity-variable constant-pressure maintenance device of pressure vessel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104524728A (en) * | 2014-12-23 | 2015-04-22 | 天津市海雅实业有限公司 | Pressure boosting and maintaining device for fire control pipeline |
| CN104827877A (en) * | 2014-12-18 | 2015-08-12 | 北汽福田汽车股份有限公司 | Power assembly mounting system and vehicle |
| CN106444883A (en) * | 2014-12-10 | 2017-02-22 | 四川杰特机器有限公司 | Pressure control method for two-way flow of pressure test medium |
| CN106955642A (en) * | 2017-03-28 | 2017-07-18 | 中国科学院南京地质古生物研究所 | The open high-pressure reactor of Water-rock interaction and its method of work of wide cut voltage-regulation voltage-stabilization |
| CN109738218A (en) * | 2018-12-28 | 2019-05-10 | 宝鸡石油机械有限责任公司 | A kind of external pressure Work condition analogue experimental rig of drilling and extracting equipment |
| CN112071181A (en) * | 2020-09-17 | 2020-12-11 | 哈尔滨工程大学 | Marine instrument control circuit experiment teaching system under high-pressure wet condition |
| CN112414654A (en) * | 2019-08-22 | 2021-02-26 | 天津大学青岛海洋技术研究院 | Test device for simulating deep sea constant pressure state |
| CN115261056A (en) * | 2021-04-29 | 2022-11-01 | 中国石油化工股份有限公司 | Reaction kettle, experimental device and method for shale oil heating modification experiment |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107153435B (en) * | 2014-12-10 | 2019-02-05 | 四川杰特机器有限公司 | For test medium can two-way flow compress control method |
| CN106444883A (en) * | 2014-12-10 | 2017-02-22 | 四川杰特机器有限公司 | Pressure control method for two-way flow of pressure test medium |
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| CN106444882B (en) * | 2014-12-10 | 2019-02-05 | 四川杰特机器有限公司 | A kind of test medium can two-way flow compress control method |
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| CN104827877A (en) * | 2014-12-18 | 2015-08-12 | 北汽福田汽车股份有限公司 | Power assembly mounting system and vehicle |
| CN104524728A (en) * | 2014-12-23 | 2015-04-22 | 天津市海雅实业有限公司 | Pressure boosting and maintaining device for fire control pipeline |
| CN106955642A (en) * | 2017-03-28 | 2017-07-18 | 中国科学院南京地质古生物研究所 | The open high-pressure reactor of Water-rock interaction and its method of work of wide cut voltage-regulation voltage-stabilization |
| CN109738218A (en) * | 2018-12-28 | 2019-05-10 | 宝鸡石油机械有限责任公司 | A kind of external pressure Work condition analogue experimental rig of drilling and extracting equipment |
| CN112414654A (en) * | 2019-08-22 | 2021-02-26 | 天津大学青岛海洋技术研究院 | Test device for simulating deep sea constant pressure state |
| CN112071181A (en) * | 2020-09-17 | 2020-12-11 | 哈尔滨工程大学 | Marine instrument control circuit experiment teaching system under high-pressure wet condition |
| CN115261056A (en) * | 2021-04-29 | 2022-11-01 | 中国石油化工股份有限公司 | Reaction kettle, experimental device and method for shale oil heating modification experiment |
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Application publication date: 20130213 |