CN202927028U - Pressure container variable volume constant-pressure keeping device - Google Patents
Pressure container variable volume constant-pressure keeping device Download PDFInfo
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- CN202927028U CN202927028U CN 201220553161 CN201220553161U CN202927028U CN 202927028 U CN202927028 U CN 202927028U CN 201220553161 CN201220553161 CN 201220553161 CN 201220553161 U CN201220553161 U CN 201220553161U CN 202927028 U CN202927028 U CN 202927028U
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- pressure container
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Abstract
The utility model aims to provide a pressure container variable volume constant-pressure keeping device which comprises a forcing system, a pressure container system and a variable volume constant-pressure keeping system, wherein the forcing system, the pressure container system and the variable volume constant-pressure keeping system are successively connected. The forcing system comprises a water box and a hydraulic test pump, the pressure container system comprises a pressure container, the hydraulic test pump is respectively communicated with the water box and the pressure container, a single-way valve is arranged between the hydraulic test pump and the pressure container, a pipeline arranged between the hydraulic testing pump and the single-way valve is communicated with the water box and provided with a overflow valve, and the pressure container is communicated with the variable volume constant-pressure keeping system. The pressure container variable volume constant-pressure keeping device occupies small space to achieve bulge test of tested equipment by the pressure container, and pressure inside the pressure container does not change along change of the size of the test equipment. Change of the volume is achieved through movement of a piston, accurate regulation can be achieved, a closed loop control loop is formed, pressure regulating speed is high, and accurate level pressure is achieved through the variable volume constant-pressure keeping system. The pressure container variable volume constant-pressure keeping device is simple to operate and convenient to use.
Description
Technical field
The utility model relates to a kind of pressure container apparatus.
Background technique
To the continually developing of ocean, also more and more higher to the requirement of deep ocean work equipment along with the mankind, 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 more difficult collection that realizes data.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 pressurized container, then by high-pressure service pump, liquid is squeezed in pressurized container, with the high pressure of simulated deep-sea environment.
usually the pressurized container volume can not be too large, compressibility due to water is very little again, when Devices to test moves, the equipment own vol is changed, thereby cause liquid volume variation in pressurized container, such as the Controller of Underwater Manipulator joint is driven when rotating by hydraulic cylinder extension, when the piston rod of oil hydraulic cylinder stretches out, the own vol increase diminishes the interior liquid capacity of pressurized container, water is compressed, vessel internal pressure power sharply raises, and own vol dwindles liquid capacity is increased when piston rod is retracted, vessel internal pressure power can decline to a great extent again.Yet in the degree of depth certain ocean, no matter how mechanism hand moves, its seawater pressure is substantially constant, and testing its laboratory abyssal environment simulator (pressurized container) for this type of has very big-difference with situation in actual deep-sea.Its reason is that the high pressure in the deep-sea is because seawater gravity causes, and the high pressure in 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 is all to be directly that pressurized container is suppressed by pressurizing system, seldom has to consider that in pressurized container, liquid capacity changes the pressure variation that causes.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 purpose of this utility model is to provide and overcomes a kind of pressurized container capacity constant voltage holding device that the pressure that causes when the equipment under test own vol changes in pressurized container significantly changes.
The purpose of this utility model is achieved in that
A kind of pressurized container capacity of the utility model constant voltage holding device, it is characterized in that: comprise the pressurizing system, pressure vessel systems, the capacity constant voltage keeping system that are connected 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 utility model 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 fuel tank, and oil hydraulic pump is communicated with fuel tank.
2, described pressure vessel systems also comprises pressure transducer, pressure transducer is arranged on 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 drives 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 utility model is:
(1) take 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) realize the variation of volume by the movement 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 utility model;
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 utility model 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 is connected 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.
The interior installation equipment under test of pressurized container 9, pressurized container 9 are suppressed water intake and are connected by high-pressure rubber pipe with hydraulic test pump 6 with water pressure generation, and water pressure generation uses hydraulic test pump 6 with in the water injection pressure container 9 in water tank 4.Pressurized container 9 is connected high-pressure rubber pipe diameter used with piston hydraulic cylinder 10 should select higher value, and the liquid in pressurized container 9 and piston hydraulic cylinder 10 can flow rapidly like this.Water in the rodless cavity of piston hydraulic cylinder 10, oil in 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 diameter of piston rod and can also make because piston rod movement causes the fluid that additionally flows out from relief valve 12 and reduce, can reduce like this fluctuation before pressure balance.Accumulator 11 is communicated with piston hydraulic cylinder 10 rod chambers, and when piston occured to move suddenly, at first unnecessary fluid 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, unscrew immediately relief valve 5 when the pressure gauge registration soon reaches required test pressure.Then unscrew relief valve 12, primer fluid press pump 13, then turn relief valve 12 slowly, make 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 utility model is as follows: at first tested equipment is put into pressurized container 9, close the pressurized container upper cover, open the top outlet valve, opening water pressure generation uses hydraulic test pump 6 toward the interior water-filling of tank, close exhaust port after being full of water and discharging water by exhaust port in tank, then regulate the relief valve 12 in relief valve 5 that water pressure generation connects with hydraulic test pump 6 water outlets and pressurized container 9 opposite side fluid loops, make vessel internal pressure power reach test pressure and make that in piston hydraulic cylinder 10, piston mediates, piston this moment both sides institutes liquid body thrust equates.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 cavity one side hydraulic pressure rise simultaneously owing to being communicated with pressure by pipeline with pressurized container 9, piston hydraulic cylinder piston this moment both sides are subjected to force unbalance, in the piston hydraulic cylinder rodless cavity liquid to the thrust of piston greater than the thrust of liquid in rod chamber to piston, this moment, piston moved to the rod chamber direction, the interior unnecessary liquid of pressurized container 9 enters piston hydraulic cylinder 10 rodless cavities through pipeline, and at first the fluid of piston hydraulic cylinder 10 rod chambers enter accumulator 11, then flow 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 chamber one sides keeps original pressure level substantially constant, pressurized container 9 is interior because the liquid outflow pressure reduces, be that piston hydraulic cylinder 10 rodless cavity one side liquid reduce piston thrust, when piston movement arrives a certain position, piston both sides stress balance, if piston continues to move to the rod chamber direction, 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, piston will slow down until stop then reversing motion this moment, effect due to damping, piston finally stops at the equilibrium position.Piston this moment both sides institute liquid body thrust equates, 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 pressurized container 9 is identical with initial time.In like manner, when tested equipment volume reduced, the pressure in 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 that the utility model is created: the piston rod of piston hydraulic cylinder 10 is fixedly connected with nut 16, and nut 16 coordinates 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 moves left and right together with piston, realizes the pressure of pressurized container 9 is regulated.Pressure size in 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 are connected 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 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 arranged on 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 drives leading screw, drive motor controller is Bonding pressure sensor and drive motor respectively, drive motor controller receives pressure sensor signal and controls that drive motor turns to and rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553161 CN202927028U (en) | 2012-10-26 | 2012-10-26 | Pressure container variable volume constant-pressure keeping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553161 CN202927028U (en) | 2012-10-26 | 2012-10-26 | Pressure container variable volume constant-pressure keeping device |
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| Publication Number | Publication Date |
|---|---|
| CN202927028U true CN202927028U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220553161 Expired - Fee Related CN202927028U (en) | 2012-10-26 | 2012-10-26 | Pressure container variable volume constant-pressure keeping device |
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| CN (1) | CN202927028U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927269A (en) * | 2012-10-26 | 2013-02-13 | 哈尔滨工程大学 | Volumetric capacity-variable constant-pressure maintenance device of pressure vessel |
| CN105646930A (en) * | 2016-03-04 | 2016-06-08 | 郑州大学 | Clay/thermoplastic polyurethane microcellular foam nanocomposite material and preparation method thereof |
| CN106441738A (en) * | 2016-08-23 | 2017-02-22 | 岳阳筑盛阀门管道有限责任公司 | Efficient angle valve pressure test device |
| CN112833180A (en) * | 2020-12-31 | 2021-05-25 | 福建省特种设备检验研究院 | Can simulate submarine environment's underwater robot popular science show and use overhead tank |
-
2012
- 2012-10-26 CN CN 201220553161 patent/CN202927028U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927269A (en) * | 2012-10-26 | 2013-02-13 | 哈尔滨工程大学 | Volumetric capacity-variable constant-pressure maintenance device of pressure vessel |
| CN105646930A (en) * | 2016-03-04 | 2016-06-08 | 郑州大学 | Clay/thermoplastic polyurethane microcellular foam nanocomposite material and preparation method thereof |
| CN105646930B (en) * | 2016-03-04 | 2018-10-26 | 郑州大学 | Clay/thermoplastic polyurethane microporous foam nanocomposite and preparation method thereof |
| CN106441738A (en) * | 2016-08-23 | 2017-02-22 | 岳阳筑盛阀门管道有限责任公司 | Efficient angle valve pressure test device |
| CN106441738B (en) * | 2016-08-23 | 2019-02-15 | 岳阳筑盛阀门管道有限责任公司 | A kind of efficient angle valve pressure testing device |
| CN112833180A (en) * | 2020-12-31 | 2021-05-25 | 福建省特种设备检验研究院 | Can simulate submarine environment's underwater robot popular science show and use overhead tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130508 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |