CN102040261A - Water-pressure automatic transposition energy recovery device - Google Patents
Water-pressure automatic transposition energy recovery device Download PDFInfo
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- CN102040261A CN102040261A CN201010532261XA CN201010532261A CN102040261A CN 102040261 A CN102040261 A CN 102040261A CN 201010532261X A CN201010532261X A CN 201010532261XA CN 201010532261 A CN201010532261 A CN 201010532261A CN 102040261 A CN102040261 A CN 102040261A
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Abstract
The invention provides a water-pressure automatic transposition energy recovery device which comprises a two-position five-way change valve, four check valves, two pressure switching tubes and two seal heads, wherein one ends of the two pressure switching tubes are respectively connected to two sides of the two-position five-way change valve, and the two seal heads are respectively arranged on another ends of the pressure switching tubes; the four check valves are equally divided into two groups, the two groups are respectively arranged on the two seal heads, and the directions of the two check valves in each group are opposite. The invention has the advantage that reliable mechanical interlocking can be formed because the two-position five-way change valve is adopted as a waste fluid guide valve, and the phenomenon of streaming of high-pressure fluid and low-pressure fluid at the instant of switching is prevented.
Description
Technical field
The present invention relates to a kind of pressure can be delivered to the pressure exchanger of one other fluid from a kind of fluid, refer in particular to the hydraulic pressure that the is used for reverse osmosis seawater desalination system energy recycle device that replaces automatically.
Background technology
Reverse osmosis technology belongs to pressure-actuated membrane separation technique, and the semipermeable partition that adopts in its process operation is organically kept apart fresh water and concentrated seawater, under the effect of high pressure the fresh water in seawater or the brackish water is carried out separating process.The fresh water that is separated flows out with the form of penetrating fluid, and remaining seawater that is concentrated or brackish water are discharged with the form of strong brine.Working pressure is generally between 5.0～7.0MPa in China's reverse osmosis seawater desalting engineering, and the pressure of the concentrated seawater that discharges from film group device is still up to 4.8～6.8MPa.If the water rate of recovery according to common 40% is calculated, 60% feed pressure energy is arranged in the concentrated seawater approximately, have huge recovery value and meaning.
Energy recycle device based on reverse osmosis seawater desalination system mainly contains water turbine type, differential pressure crossover and isobaric crossover at present.Comparatively complicated moving parts is all adopted in these three kinds of designs, the agent structure of its energy exchange.In addition, water turbine type energy recycle device efficient is on the low side, and general energy recovery efficiency is between 40%～70%; It is less than normal that differential pressure crossover energy recycle device is handled energy, is not suitable for large scale system; Isobaric crossover energy recycle device efficient has become the emphasis of domestic and international research and extension at present up to more than 94%.
Chinese patent ZL98809685.4 has announced a kind of pressure exchanger, this pressure exchanger is limited by the rotating speed of rotor and the volumetrical of rotor channel, the treatment capacity of separate unit PX is less, next adopts rotor channel that the entity piston is not set to carry out mixing of insulating sea water and concentrated seawater, mixing section has been sacrificed the volume of rotor channel about 50%, high pressure sea water saltness after the supercharging simultaneously increases, and then improves the working pressure of system; Can influence rotor speed during last fluctuations in discharge, cause system's fluctuation of service, and a large amount of noise severe contaminations that send in the rotor operation process surrounding enviroment.
Two pressurized vessel merit exchange energy withdrawers (DWEER) of Switzerland CALDER AG company, its LinX valve of carrying out the concentrated seawater guiding adopts the oil pressure guide to drive, and not only will dispose an independently oil hydraulic system for this reason, and leakage of oil easily, pollution of marine environment.
Chinese patent ZL01130627.0 has announced a kind of valve controlled residual pressure recovering equipment for impervious desalination system.This device adopts 4 three-way solenoid valves to switch high-pressure thick water and the commutation of low pressure seawater, because the three-way solenoid valve switch speed is slow, needs 2 covering device alternations in parallel could satisfy the requirement of reverse osmosis system to pressure and flow rate fluctuation at least; Simultaneously since under the sea water desaltination operating mode high and low pressure side pressure reduction very big, to have at first enough that the Electrical heads of big moment could drive three-way solenoid valve, secondly three-way solenoid valve will overcome the high and low pressure side unbalanced force and realizes steady in a long-term the operation, this is at present or a difficult problem; This device needs the valve control system of more complicated, can not form mechanical interlocked reliably between the switching moment three-way solenoid valve each other, the high pressure relief phenomenon very easily occurs, and then cause reverse osmosis system pressure and flow big fluctuation to occur, practical application is restricted.
Summary of the invention
The purpose of this invention is to provide a kind of hydraulic pressure energy recycle device that replaces automatically, control is simple, and pressure surge is little.For this reason, the present invention by the following technical solutions: it comprises a switch valve with two-position and five-pass, four check valves, two pressure-exchange pipes and two end sockets; One end of two pressure-exchange pipes is connected in the switch valve with two-position and five-pass both sides respectively, two end sockets are separately positioned on the other end of two pressure-exchange pipes, four described check valves are divided equally into two groups, are located at respectively on two end sockets, and the direction of two check valves in every group is opposite;
Be provided with free piston in the described pressure-exchange pipe, free piston is divided into two working chambers with the pressure-exchange pipe, be respectively to be transferred liquid working chamber and discarded liquid working chamber, be transferred the liquid working chamber and be in by end socket one side and with check valve on the end socket and be connected, discarded liquid working chamber is in by switch valve with two-position and five-pass one side;
Be provided with valve rod in the described switch valve with two-position and five-pass and supply the valve pocket of valve rod axial motion, described valve pocket has O vertically
1Port, B port, P port, A port, O
2Five ports of port; Described P port is the discarded liquid import of described energy recycle device, described O
1Port, O
2Port is discarded liquid discharge outlet, described B port be in O
2The discarded liquid working chamber of the pressure-exchange pipe of port side is communicated with, described A port be in O
1Discarded liquid working chamber in the pressure-exchange pipe of port side is communicated with;
O
1Port, B port, P port, A port, O
2The position of port and described valve rod have following matching relationship: described valve rod has first working position and second working position vertically, and when first working position, P port and B port are connected, O
2Port and A port are connected, and described valve rod stretches into the discarded liquid working chamber of the pressure-exchange pipe that is communicated with the A port, and when second working position, P port and A port are connected, O
1Port and B port are connected, and described valve rod stretches into the pressure-exchange pipe that is communicated with the B port and discards the liquid working chamber, and it is suitable that length that described valve rod stretches into and valve rod switch on the distance of first working position and the required motion of second working position; The both sides of switch valve with two-position and five-pass are respectively equipped with the hole that feeds the discarded liquid working chamber of its both sides for described valve rod, and in the hole sealing element that cooperates with the valve rod dynamic seal are set;
In the described check valve direction be the import that enters the check valve of pressure-exchange pipe be described energy recycle device be transferred the liquid import, in the described check valve direction be the outlet of the check valve of outlet pressure exchange pipe be described energy recycle device be transferred the liquid outlet; Direction is that the outlet of 2 check valves of outlet pressure exchange pipe links to each other by pipeline in the described check valve.
The hydraulic pressure energy recycle device that replaces automatically can adopt that many covers are in parallel to be used.
Because adopt technical scheme of the present invention, the present invention has following useful technique effect:
1. owing to adopt switch valve with two-position and five-pass as discarded liquid pilot valve, can form mechanical interlockedly reliably, prevent to switch the phenomenon that high and low pressure liquid crossfire appears in moment.
2. the switch valve with two-position and five-pass valve rod of energy recycle device promotes being transferred under the action of hydraulic force by free piston because hydraulic pressure replaces automatically, therefore thrust can be very big, commutation relatively steadily fast, and do not need complicated Controlling System to come the ACTIVE CONTROL valve event, can also maximally utilise the plot ratio of pressure-exchange pipe, be suitable for the impervious desalination system of various scales.
3. the switch valve with two-position and five-pass of energy recycle device has the characteristics of stroke valve because hydraulic pressure replaces automatically, promote the valve rod transposition during free piston limit of sports record position, can make the automatic conversion work state of energy recycle device, good to the adaptability of flow system flow and pressure, many covers are in parallel easy to use.
Since the pressure-exchange pipe be transferred the liquid side and be provided with 4 check valves by rule, can be according to pressure-exchange pipe internal pressure situation automatic open close, not only can the simplification device Controlling System, and be not easy to break down.
5. show in demonstration project that the hydraulic pressure energy recycle device that replaces automatically operates steadily through long operation result, noise is low, and energy recovery efficiency has high value of practical up to more than 95%, has produced certain economic benefits and social benefit.
Description of drawings
Fig. 1 is that the present invention is at 500m
3The synoptic diagram of/d reverse osmosis seawater desalination system.
Fig. 2 is replace the automatically sectional view of energy recycle device of hydraulic pressure in embodiment illustrated in fig. 1.
Fig. 3 is replace automatically switch valve with two-position and five-pass sectional view in the energy recycle device of hydraulic pressure in embodiment illustrated in fig. 1.
Embodiment
Reference picture.The hydraulic pressure that the is provided energy recycle device 100 that replaces automatically is provided comprises 31,32 and two end sockets 41,42 of 21,22,23,24, two pressure-exchange pipes of 1, four check valve of a switch valve with two-position and five-pass; One end of two pressure-exchange pipes 31,32 is connected in switch valve with two-position and five-pass 1 both sides respectively, two end sockets 41,42 are separately positioned on the other end of two pressure-exchange pipes, four check valves are divided equally into two groups, be located at respectively on two end sockets, the direction of two check valves in every group is opposite, and check valve 21,22 is arranged on end socket 41, and direction is opposite, check valve 23,24 is arranged on end socket 42, and direction is opposite.
Be provided with free piston 51,52 in the described pressure-exchange pipe 31,32, free piston is divided into two working chambers with the pressure-exchange pipe, be respectively to be transferred liquid working chamber and discarded liquid working chamber, be transferred the liquid working chamber and be in by end socket one side and with check valve on the end socket and link to each other, discarded liquid working chamber is in by switch valve with two-position and five-pass one side; Label 61,62 is respectively conveying liquid working chamber and the discarded liquid working chamber in the pressure-exchange pipe 31, and label 63,64 is respectively conveying liquid working chamber and the discarded liquid working chamber in the pressure-exchange pipe 32.
Be provided with valve rod 11 in the described switch valve with two-position and five-pass and supply the valve pocket 12 of valve rod axial motion, described valve pocket has O vertically
1Port, B port, P port, A port, O
2Five ports of port; Described P port is the discarded liquid import of described energy recycle device, described O
1Port, O
2Port is discarded liquid discharge outlet, described B port be in O
2The discarded liquid working chamber 62 of the pressure-exchange pipe 31 of port side is communicated with, described A port be in O
1Discarded liquid working chamber 64 in the pressure-exchange pipe 32 of port side is communicated with; Two working positions about described valve rod 11 has vertically are respectively first working position and second working position, and when first working position, P port and B port are connected, O
2Port and A port are connected, and when second working position, P port and A port are connected, O
1Port and B port are connected; State when in the drawings, having shown second working position.
In the described check valve direction be the import that enters the check valve 21,23 of pressure-exchange pipe be described energy recycle device be transferred the liquid import, in the described check valve direction be the outlet of the check valve 22,24 of outlet pressure exchange pipe be described energy recycle device be transferred the liquid outlet; Direction is that the outlet of the check valve 21,23 of outlet pressure exchange pipe links to each other by pipeline 201 in the described check valve.
When described valve rod is in first working position, described valve rod stretches into the discarded liquid working chamber 64 of the pressure-exchange pipe 32 that is communicated with the A port, when described valve rod is in second working position, described valve rod stretches into the discarded liquid working chamber 62 of the pressure-exchange pipe 31 that is communicated with the B port, it is suitable that length that it stretches into and valve rod switch on the distance of first working position and the required motion of second working position, makes when free piston in the pressure-exchange pipe 31,32 moves to the limit position of switch valve with two-position and five-pass side by its promotion and automatically conversion work position of described valve rod.The both sides of switch valve with two-position and five-pass are respectively equipped with the hole 13,14 that feeds the discarded liquid working chamber of its both sides for described valve rod, and in the hole sealing element 15,16 that cooperates with the valve rod dynamic seal are set.
Working process is below described:
1, when the switch valve with two-position and five-pass valve rod is in right position (first working position), P port and B port are connected, O
2Port and A port are connected.At this moment, the discarded liquid of high pressure enters pressure-exchange pipe 31 discarded liquid working chambers 62, check valve 21 is closed automatically, check valve 22 is opened automatically, the discarded liquid of the high pressure of the discarded liquid working chambers 62 of pressure-exchange pipe 31 promote to be transferred liquid working chamber 61 be transferred liquid and free piston 51 is moved to the left together, low pressure is transferred liquid to be become high pressure and is transferred liquid and is outwards extruded after supercharging; Simultaneously, check valve 24 is transferred at described high pressure under the effect of liquid and closes automatically, check valve 23 is transferred in low pressure under the pressure-driven of liquid and opens automatically, low pressure is transferred liquid and enters pressure-exchange pipe 32 and be transferred liquid working chamber 63, the discarded liquid of low pressure and the free piston 52 that promote discarded liquid working chamber 64 are moved to the left together, and the discarded liquid of low pressure is through A port, O
2Port outwards discharges.
2, when free piston 52 moves to the limit on the left position, promote switch valve with two-position and five-pass valve rod 11 and move to position, a left side (second working position) left, P port and A port are connected, O
1Port and B port are connected.At this moment, the discarded liquid of high pressure enters pressure-exchange pipe 32 discarded liquid working chambers 64, check valve 23 is closed automatically, check valve 24 is opened automatically, the discarded liquid of the high pressure of the discarded liquid working chambers 64 of pressure-exchange pipe 32 promote to be transferred liquid working chamber 63 be transferred liquid and free piston 52 moves right together, low pressure is transferred liquid to be become high pressure and is transferred liquid and is outwards extruded after supercharging; Simultaneously, check valve 22 is transferred at described high pressure under the effect of liquid and closes automatically, check valve 21 is transferred in low pressure under the pressure-driven of liquid and opens automatically, low pressure is transferred liquid and enters pressure-exchange pipe 31 and be transferred liquid working chamber 61, and the low pressure that promotes discarded liquid working chamber 62 discards liquid and free piston 51 moves right together, and the discarded liquid of low pressure is through B port, O
1Port outwards discharges,
3, when free piston 51 moves to the limit on the right-right-hand limit position, promote switch valve with two-position and five-pass valve rod 11 and move right, the switch valve with two-position and five-pass valve rod is in right position, gets back to above-mentioned working order at the 1st, so continuously carry out energy exchange, realize that energy recovery utilizes again.
Described hydraulic pressure replaces automatically, and how the cover parallel connection is used in the energy recycle device employing.
In Fig. 1, label 202 is the film group device in the reverse osmosis system, and label 203 is the sea water preprocessing device in the reverse osmosis system, label
Be online under meter, label
Be online tensimeter, label 204 is the high-pressure valve in the reverse osmosis system, and label 205 is that the boost in pressure pump, 206 in the reverse osmosis system is the pressure charging valve in the reverse osmosis system.
Embodiment described above is with daily output fresh water 500m
3/ d, the reverse osmosis seawater desalination system of the water rate of recovery 40% are example.
Replace the automatically total loading of energy recycle device of hydraulic pressure is handled flow 30～35m
3/ h.During work, starter gear according to the following steps: activate to open topping-up pump 206, boost in pressure pump 205 successively, through behind 1～3 minute low pressure exhaust, start high-pressure pump 204, equipment enters normal operating condition.Working process after the startup is as follows:
Enter sea water preprocessing device 203 after 206 superchargings of charging seawater process topping-up pump, the seawater that the process pre-treatment is come out is divided into two tunnel, one road seawater (about 40%) and directly boosts to sea water desaltination nominal operation pressure by high-pressure pump 204; Another road (about 60%) carries out being pressurized to sea water desaltination nominal operation pressure through boost in pressure pump 205 again after pressure-exchange is boosted with the high-pressure thick seawater through the described hydraulic pressure energy recycle device that replaces automatically, enters film group device 202 after converging with last road high pressure sea water.The on high-tension side high-pressure thick seawater of film group device enters the described hydraulic pressure energy recycle device that replaces automatically, with low pressure sea pressure exchange back discharge system; The fresh water that sees through film group device 202 is supplied with user's use.
Hydraulic pressure replace automatically energy recycle device working process as previously mentioned, periodically the pressure with the high-pressure thick seawater can pass to fresh seawater, thereby realizes the recycling of energy.
With reference to Fig. 1 and table 1, table 1 has provided 500m
3/ d reverse osmosis seawater desalination system replaces behind the energy recycle device automatically using described hydraulic pressure, and the flow of system's each point as shown in Figure 1 and pressure equilibrium table, the flow by boost in pressure pump 205 equal the concentrated seawater flow that gives off from film group device 202; Flow by high-pressure pump equals system's product discharge.
Table 1: system's each point flow rate pressure balance sheet (not representing each point among the figure)
Produce fresh water 500m daily with Fig. 1
3/ d, the reverse osmosis seawater desalting engineering of the water rate of recovery 40% is an example, is 25 ℃ at feed temperature, is 35000mg/L to water concentration, under the condition of pH=7, the system ontology energy consumption is about 6.4kWh/m when the noenergy retrieving arrangement
3, the system ontology energy consumption is about 2.4kWh/m after the described hydraulic pressure of use replaces energy recycle device automatically
3, expectation can save energy consumption and expense is as follows:
But with ton water brownout: 4.0kWh/m
3Electricity price: 0.8 yuan/kWh; Working rate: 80%, then annual economize on electricity total expenses is:
ξ=500 * 365 * 0.8 * 4.0 * 0.8/10000=46.72 (ten thousand yuan/year)
With 500m
3The seawater desalination system of/d is an example, and the system high pressure pumping capacity with energy recycle device is not about 55m
3/ h, and the system high pressure pumping capacity that replaces automatically behind the energy recycle device with described hydraulic pressure only needs 21m
3Therefore/h adopts described hydraulic pressure to replace automatically behind the energy recycle device, can significantly reduce the investment of sea water desaltination high-pressure pump, and economical efficiency is fairly obvious.
At last, it is also to be noted that, more than only be one embodiment of the present of invention.Obviously the invention is not restricted to above example, a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (2)
1. hydraulic pressure energy recycle device that replaces automatically is characterized in that it comprises a switch valve with two-position and five-pass, four check valves, two pressure-exchange pipes and two end sockets; One end of two pressure-exchange pipes is connected in the switch valve with two-position and five-pass both sides respectively, two end sockets are separately positioned on the other end of two pressure-exchange pipes, four described check valves are divided equally into two groups, are located at respectively on two end sockets, and the direction of two check valves in every group is opposite;
Be provided with free piston in the described pressure-exchange pipe, free piston is divided into two working chambers with the pressure-exchange pipe, be respectively to be transferred liquid working chamber and discarded liquid working chamber, be transferred the liquid working chamber and be in by end socket one side and with check valve on the end socket and be connected, discarded liquid working chamber is in by switch valve with two-position and five-pass one side;
Be provided with valve rod in the described switch valve with two-position and five-pass and supply the valve pocket of valve rod axial motion, described valve pocket has O vertically
1Port, B port, P port, A port, O
2Five ports of port; The high pressure that described P port is described energy recycle device is discarded liquid import, described O
1Port, O
2Port is discarded liquid discharge outlet, described B port be in O
2The discarded liquid working chamber of the pressure-exchange pipe of port side is communicated with, described A port be in O
1Discarded liquid working chamber in the pressure-exchange pipe of port side is communicated with;
O
1Port, B port, P port, A port, O
2The position of port and described valve rod have following matching relationship: described valve rod has first working position and second working position vertically, and when first working position, P port and B port are connected, O
2Port and A port are connected, and described valve rod stretches into the discarded liquid working chamber of the pressure-exchange pipe that is communicated with the A port, and when second working position, P port and A port are connected, O
1Port and B port are connected, and described valve rod stretches into the pressure-exchange pipe that is communicated with the B port and discards the liquid working chamber, and it is suitable that length that described valve rod stretches into and valve rod switch on the distance of first working position and the required motion of second working position; The both sides of switch valve with two-position and five-pass are respectively equipped with the hole that feeds the discarded liquid working chamber of its both sides for described valve rod, and in the hole sealing element that cooperates with the valve rod dynamic seal are set;
In the described check valve direction be the import that enters the check valve of pressure-exchange pipe be described energy recycle device be transferred the liquid import, in the described check valve direction be the outlet of the check valve of outlet pressure exchange pipe be described energy recycle device be transferred the liquid outlet; Direction is that the outlet of 2 check valves of outlet pressure exchange pipe links to each other by pipeline in the described check valve.
2. according to a kind of hydraulic pressure of claim 1 energy recycle device that replaces automatically, it is characterized in that the hydraulic pressure energy recycle device that replaces automatically can adopt that many covers are in parallel to be used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010532261XA CN102040261B (en) | 2010-11-04 | 2010-11-04 | Water-pressure automatic transposition energy recovery device |
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|---|---|---|---|
| CN201010532261XA CN102040261B (en) | 2010-11-04 | 2010-11-04 | Water-pressure automatic transposition energy recovery device |
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Cited By (6)
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| CN104061205A (en) * | 2014-05-30 | 2014-09-24 | 广西大学 | Pressure exchanger energy recovery cylinder |
| CN105370527A (en) * | 2015-12-07 | 2016-03-02 | 柳云 | Reclaimed water recovering and reusing system |
| CN106438519A (en) * | 2016-09-07 | 2017-02-22 | 上海空间推进研究所 | Light-weight supercharging device employing energy recovery technology |
| CN110594119A (en) * | 2019-09-06 | 2019-12-20 | 北京朗新明环保科技有限公司 | High salt water energy conversion device |
| CN110594118A (en) * | 2019-09-06 | 2019-12-20 | 北京朗新明环保科技有限公司 | High salt water energy conversion control system |
| CN113263288A (en) * | 2021-05-27 | 2021-08-17 | 一汽解放汽车有限公司 | Interlocking mechanism and clamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180092A1 (en) * | 2013-05-07 | 2014-11-13 | 杭州（火炬）西斗门膜工业有限公司 | Pressure-difference boost-type energy recycling apparatus based on reverse osmosis system |
| CN103230745B (en) * | 2013-05-07 | 2014-10-15 | 杭州（火炬）西斗门膜工业有限公司 | Differential pressure booster-type energy recovery device based on reverse osmosis system |
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| CN110594119A (en) * | 2019-09-06 | 2019-12-20 | 北京朗新明环保科技有限公司 | High salt water energy conversion device |
| CN110594118A (en) * | 2019-09-06 | 2019-12-20 | 北京朗新明环保科技有限公司 | High salt water energy conversion control system |
| CN113263288A (en) * | 2021-05-27 | 2021-08-17 | 一汽解放汽车有限公司 | Interlocking mechanism and clamp |
| CN113263288B (en) * | 2021-05-27 | 2023-02-21 | 一汽解放汽车有限公司 | Interlocking mechanism and clamp |
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| Publication number | Publication date |
|---|---|
| CN102040261B (en) | 2012-10-31 |
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