CN201882953U - Cartridge valve controlled type pressure exchange device - Google Patents
Cartridge valve controlled type pressure exchange device Download PDFInfo
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- CN201882953U CN201882953U CN2010205922934U CN201020592293U CN201882953U CN 201882953 U CN201882953 U CN 201882953U CN 2010205922934 U CN2010205922934 U CN 2010205922934U CN 201020592293 U CN201020592293 U CN 201020592293U CN 201882953 U CN201882953 U CN 201882953U
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Abstract
The utility model provides an inserted valve control type pressure exchange device, which comprises a three-position four-way electromagnetic reversing valve, two cartridge valves, two one-way valves and a pressure exchange tube. A free piston disposed in the pressure exchange tube divides the pressure exchange tube into two operating cavities, namely a delivered liquid operating cavity and a waste liquid operating cavity. The electromagnetic reversing valve with a pilot controlled cartridge valve structure is adopted for waste liquid reversion, so that the difficulty of reversion of the high-pressure high-flow waste liquid is better solved, high reversion moment and channeling of low-pressure liquid flows caused by 'fast opening and slow closing' of the cartridge valve, and the water outlet pressure fluctuation is smaller.
Description
Technical field
The utility model relates to a kind ofly can be delivered to the pressure exchanger of one other fluid from a kind of fluid with pressure, refers in particular to the pressure exchanger that is used for impervious desalination system.
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 CALDERAG 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 utility model technical problem at first to be solved provides the valve-regulated pressure-exchange cell arrangement of a kind of plug-in mounting, and its control and internal structure are simple.For this reason, the utility model by the following technical solutions: it comprises a 3-position 4-way solenoid operated directional valve, two cartridge valves, two check valves and a pressure-exchange pipe composition; A free piston being set in the described pressure-exchange pipe and being divided into two working chambers, is respectively to be transferred liquid working chamber and discarded liquid working chamber;
One of described two check valves carry and be transferred liquid and prevent the adverse current check valve to being transferred the liquid working chamber for being used for, another extrudes from carry the liquid working chamber and prevents the adverse current check valve for high pressure is transferred liquid, and the described liquid working chamber that is transferred is communicated with described two check valves;
One in described two cartridge valves is the discarded liquid feed liquor cartridge valve of high pressure, and another is discharged for the discarded liquid of low pressure and uses cartridge valve, and described discarded liquid working chamber is communicated with described two cartridge valves;
Described solenoid operated directional valve is provided with valve rod and supplies the valve pocket of valve rod axial motion, and described valve pocket has P port, K
1Port, K
2Port, O port, P port are the discarded liquid import of high pressure, and the O port is discarded liquid discharge outlet, K
1Port and K
2Port is communicated with the control mouth of two cartridge valves respectively;
Described solenoid operated directional valve is provided with the electro-magnet of actuate valve stem axial motion, and described pressure-exchange cell arrangement is provided with programmable logic controller, and described electro-magnet and programmable logic controller are electrically connected;
Described P port, K
1Port, K
2Port, O port, the position of P port and solenoid operated directional valve valve rod have following matching relationship: valve rod has middle working position between first working position, second working position, first working position and second working position along its movement path; When first working position, P port and K
1Port is connected, O port and K
2Port is connected, when second working position, and P port and K
2Port is connected, O port and K
1Port is connected, when middle working position, and P port and K
1Port, K
2Port is connected.
On the basis of adopting technique scheme, the utility model also can adopt following further technical scheme:
Be provided with permanent magnet 51 in the described free piston, be provided with magnetic approach switch 401,402 at pressure-exchange pipe two ends, magnetic approach switch and described programmable logic controller are electrically connected.
For the middle and small scale flow, described check valve adopts ball-valve structure, and the plug-in mounting assembly of described cartridge valve adopts cone valve structure.
For big-and-middle scale flow, described check valve adopts cone valve structure, and the plug-in mounting assembly of described cartridge valve adopts cone valve structure.
For extensive flow, described check valve adopts the flap type structure, and the plug-in mounting assembly of described cartridge valve adopts the flap type structure.
Owing to adopt the technical solution of the utility model, the utlity model has following beneficial effect:
1. discarded liquid commutation of the present utility model adopts the solenoid operated directional valve guide to control the cartridge valve structure, has solved the difficult problem of the discarded liquid commutation of high-pressure high-flow preferably.
2. the utility model is provided with interposition in solenoid operated directional valve, by the control interposition state time, thereby avoids causing and switching high and low hydraulic fluid stream generation of moment " crossfire " because of cartridge valve " unlatching is fast, closes slow ".
3. the utility model adopts free piston to isolate, and is transferred to mix lessly between liquid and the discarded liquid, and pressure-exchange pipe capacity utilization is higher.
4. the utility model adopts modular design, and device is easy to stdn, maximization, and many covers are in parallel easy to use.
5. the utility model adopts programmable logic controller to finish the time variable control of valve, makes the precision of process control higher.
6. four-way electromagnetic reversing valve of the present utility model adopts solenoid actuated, check valve and cartridge valve utilize respectively system itself be transferred liquid, discarded liquid drives, and abandons the structure of oil pressure guide driving, installs more clean environment firendly;
7. energy recovery efficiency height of the present utility model, stable performance, energy recovery efficiency reaches 97.7% after testing.
Another technical problem to be solved of the utility model provides the valve-regulated pressure exchanger of a kind of plug-in mounting, and its control and internal structure are simple.For this reason, the utility model by the following technical solutions: it is provided with the above-described pressure-exchange cell arrangement of many covers in parallel, and each working position that overlaps the 3-position 4-way solenoid operated directional valve of pressure crosspoint device staggers switching time; Direction is to make the outlet that is transferred the check valve that liquid is forced out from be transferred the liquid working chamber by pipeline connection in each pressure-exchange cell arrangement, and direction is to make to be transferred hydraulic pressure and to go into to be transferred the import of the check valve in the liquid working chamber and pass through pipeline connection.
Owing to adopt technique scheme of the present utility model, not only possess above-mentioned technique effect, and the pressure surge of its water outlet be littler.
Description of drawings
Fig. 1 is the synoptic diagram of the valve-regulated pressure-exchange cell arrangement of single cover plug-in mounting provided by the utility model embodiment.
Fig. 2 is the structure sectional view of 3-position 4-way solenoid operated directional valve.
Fig. 3 is that the valve-regulated pressure-exchange cell arrangement of three cover plug-in mountings arranged side by side provided by the utility model decomposition pressure exchange system is applied to the synoptic diagram in the reverse osmosis system.
Fig. 4 is each solenoid operated directional valve working state schematic representation embodiment illustrated in fig. 3.
Fig. 5 is the unitary pressure change synoptic diagram of each pressure-exchange embodiment illustrated in fig. 3.
Embodiment
With reference to attached Fig. 1 and 2.The valve-regulated pressure-exchange cell arrangement of plug-in mounting provided by the utility model comprises that a 3-position 4-way solenoid operated directional valve 1, two cartridge valves, two check valves and a pressure-exchange pipe 4 form; Being provided with a free piston 5 in the described pressure-exchange pipe and the pressure-exchange pipe is divided into two working chambers, is respectively to be transferred liquid working chamber 41 and discarded liquid working chamber 42.
The described liquid working chamber that is transferred is communicated with described two check valves, is respectively to be used for carrying to be transferred liquid and to prevent the check valve 31 of adverse current and make and being transferred liquid and being forced out and preventing the check valve 32 of adverse current from carrying liquid working chamber 41 to being transferred liquid working chamber 41.
A cartridge valve 21 in described two cartridge valves is the discarded liquid feed liquor cartridge valve of high pressure, and another cartridge valve 22 is discharged for the discarded liquid of low pressure and used cartridge valve, and described discarded liquid working chamber 42 is communicated with described two cartridge valves.
Described solenoid operated directional valve 1 is provided with valve rod 11 and supplies the valve pocket 12 of valve rod axial motion, and described valve pocket has P port, K
1Port, K
2Port, O port, described O port have 2 imports at the valve pocket place, on valve pocket, the left side import of O port, K are arranged successively vertically
1Port, P port, K
2Port, the right side import of O port, P port are the discarded liquid import of high pressure, and the O port is discarded liquid discharge outlet, K
1Port and K
2Port is used the control mouth C of cartridge valve 21 respectively with the discarded liquid feed liquor of high pressure
1Discharge the control mouth C that uses cartridge valve 22 with the discarded liquid of low pressure
2Be communicated with.
Described solenoid operated directional valve is provided with the electro-magnet 1YA and the 2YA of actuate valve stem axial motion, and described pressure-exchange cell arrangement is provided with programmable logic controller, and described electro-magnet 1YA and 2YA and programmable logic controller are electrically connected.
The solenoid operated directional valve valve rod has the middle working position between first working position, second working position, first working position and second working position; When first working position, P port and K
1Port is connected, O port and K
2Port is connected, when second working position, and P port and K
2Port is connected, O port and K
1Port is connected, when middle working position, and P port and K
1Port, K
2Port is connected.
Described check valve adopts ball-valve structure, and the plug-in mounting assembly of described cartridge valve adopts cone valve structure, and present embodiment adopts this structure.
Below carry out the working process of pressure-exchange for the valve-regulated pressure-exchange cell arrangement of plug-in mounting.
1, when electro-magnet 1YA outage, 2YA energising
The loop is inserted in the right position of solenoid operated directional valve, and the valve rod of solenoid operated directional valve is at first working position, P port and K
1Port is connected, O port and K
2Port is connected, the discarded liquid feed liquor of high pressure with cartridge valve 21 close, the discarded liquid discharge of low pressure opens with cartridge valve 22, the pressure release of pressure-exchange pipe, check valve 32 is closed automatically, low pressure is transferred liquid and opens check valve 31 automatically simultaneously, feed pressure exchange pipe be transferred the liquid working chamber, drive free piston 5 and move right, with the discarded liquid discharger of pressure-exchange pipe right side low pressure.
2, when electro-magnet 1YA, 2YA cut off the power supply
The solenoid operated directional valve meta inserts the loop, and the valve rod of solenoid operated directional valve is at middle working position, P port and K
1Port, K
2Port is connected, and cartridge valve 21 and 22 is all closed, and the pressure-exchange pipe is carried out pressurize, prevents from because of cartridge valve " unlatching is fast, closes slow " causes to switch instantaneous pressure liquid stream and hang down hydraulic fluid stream " crossfire " to take place.According to pressure-exchange pipe internal pressure situation difference before the packing state, can be divided into high pressure pressurize, 2 states of low pressure pressurize again.
3, when electro-magnet 1YA energising, 2YA outage
The loop is inserted in position, a solenoid operated directional valve left side, and the valve rod of solenoid operated directional valve is at second working position, P port and K
2Port is connected, O port and K
1Port is connected, cartridge valve 21 is opened, cartridge valve 22 is closed, the supercharging of pressure-exchange pipe, check valve 31 is closed automatically, the high pressure that is pressurized simultaneously is transferred liquid and opens check valve 32 automatically, outflow pressure exchange pipe be transferred the liquid working chamber, drive free piston and be moved to the left, pressure-exchange pipe left side high pressure is transferred the liquid take-off equipment.
Be provided with permanent magnet 51 in the described free piston 5, be provided with magnetic approach switch 401,402 at pressure-exchange pipe two ends, magnetic approach switch and described programmable logic controller are electrically connected.FPGA is carried out corresponding actions according to the electro-magnet of the signal control solenoid operated directional valve that receives.
Electro-magnet 1YA energising, the 2YA outage, solenoid operated directional valve is in position, a left side, described free piston 5 is moved to the left, when free piston 5 moves to the limit on the left position, magnetic approach switch 401 closures, programmable logic controller is carried out the instruction of " electro-magnet 1YA outage ", solenoid operated directional valve is in meta, free piston 5 stops to move, and carries out the instruction of " electro-magnet 2YA energising " after delaying time 0～3 second, and solenoid operated directional valve is in right position, free piston 5 moves right, magnetic approach switch 401 automatic openings; When free piston 5 moves to the limit on the right-right-hand limit position, magnetic approach switch 402 closures, programmable logic controller is carried out the instruction of " electro-magnet 2YA outage ", solenoid operated directional valve is in meta, free piston 5 stops to move, and delays time and carries out the instruction of " electro-magnet 1YA energising " after 0～3 second, and described free piston 5 is moved to the left, initial state is got back in magnetic approach switch 401 automatic openings.
Described pressure-exchange cell arrangement can adopt the use in parallel of many covers, below to adopt the three covers daily output fresh water 1000m that uses in parallel
3/ d, the reverse osmosis seawater desalting engineering of the water rate of recovery 40% is an example, does further statement in conjunction with Fig. 3,4,5 to the utility model, in Fig. 3, the representative identical implication identical with Fig. 1 and 2 drawing reference numeral.
Described pressure-exchange cell arrangement can adopt the use in parallel of three covers, each valve rod working position that overlaps the 3-position 4-way solenoid operated directional valve of pressure crosspoint device staggers switching time, and direction is that the outlet that is transferred the check valve 32 that liquid is forced out from be transferred the liquid working chamber is communicated with by pipeline 206 in each pressure-exchange cell arrangement.
According to the reverse osmosis system working condition requirement, in order to guarantee fresh seawater by supercharging charging continuously, concentrated seawater is discharged by continuous pressure release, three covers pressure-exchange cell arrangement in parallel, and the about 60～65m of flow is handled in load
3/ h, the device cycle frequency is 2 times/min, adopting independently, PLC Controlling System control solenoid operated directional valve periodically moves, the solenoid operated directional valve guide controls corresponding cartridge valve and carries out the concentrated seawater change action, there is the time difference in 1/3 cycle switching time in the valve rod working position of adjacent 2 energy recovery unit during work, whenever the system that can guarantee so all has a pressure-exchange cell arrangement to be in the supercharging feed state, a pressure-exchange cell arrangement is in the flow emissions status, guarantee the continuity of flow system flow and pressure, reduce the fluctuation of system pressure and flow, thereby make the operation of reverse osmosis membrane system continous-stable.
Starter gear according to the following steps: the device total power switch closes, programmable logic controller moves automatically, then opens topping-up pump 201, boost in pressure pump 202 successively, through behind 1～3 minute low pressure exhaust, start high-pressure pump 203, equipment enters normal operating condition.At this moment, enter pretreatment unit 204 after 201 superchargings of charging seawater process topping-up pump, the qualified 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 203; What another road seawater (about 60%) entered pressure-exchange cell arrangement 4 is transferred the liquid working chamber, after pressure-exchange, be pressurized to sea water desaltination nominal operation pressure through boost in pressure pump 202 again, converge the common charging in back as reverse osmosis film group device 205 with last road high pressure sea water.Film group device 205 on high-tension side high-pressure thick seawater enter the discarded liquid working chamber of crosspoint device 4, with low pressure sea pressure exchange back discharge system; The fresh water that sees through film group device 205 is supplied with user's use.
Table 1 has provided 1000m
3Any one pressure-exchange cell arrangement solenoid operated directional valve actuation cycle table in the/d reverse osmosis seawater desalting engineering.
Table 1 solenoid operated directional valve actuation cycle table
During normal the operation, programmable logic controller is controlled electro-magnet automatically from " state A → state B
1→ state C → state B
2→ get back to state A, continue circulation ... ".Fig. 4 provides the valve time control principle figure of three cover pressure crosspoint devices, V
G1, V
G2, V
G3Represent the solenoid operated directional valve working order in the three cover pressure crosspoint devices respectively, on behalf of solenoid operated directional valve, positive rise be in position, a left side, and on behalf of solenoid operated directional valve, negative edge be in right position.V
G2The solenoid operated directional valve of representative compares V
G1The solenoid operated directional valve of representative, working position switching time in leading 1/3 cycle of valve rod, V
G3The solenoid operated directional valve of representative compares V
G1The solenoid operated directional valve of representative, the working position of valve rod lagged behind for 1/3 cycle switching time.
Fig. 5 has provided pressure-exchange cell arrangement pressure-exchange pipe internal pressure situation.P
G1, P
G2, P
G3Represent the discharge pressure in the three cover pressure crosspoint devices respectively, as shown in Figure 5, whenever system all has a pressure-exchange cell arrangement to be in pressurized state, a pressure-exchange unit is in the flow state, can guarantee the flow of high-pressure thick seawater of effusive high pressure sea water and inflow and the continuity of pressure like this, reduce the fluctuation of system pressure and flow.
Table 2 has provided 1000m
3/ d reverse osmosis seawater desalination system is each point flow rate pressure balance sheet after using the utility model three covers pressure-exchange cell arrangement in parallel, and the concentrated seawater flow that the flow by the boost in pressure pump equals to give off from film group device deducts a small amount of water consumption of solenoid operated directional valve group; Flow by high-pressure pump equals a small amount of water consumption sum that system produces discharge and solenoid operated directional valve group.
Table 2 system each point flow rate pressure balance sheet
Produce fresh water 1000m daily with Fig. 1
3/ d, the reverse osmosis seawater desalting engineering of the water rate of recovery 40% is an example, at 25 ℃, is 35000mg/L to water concentration, under the pH=7 condition, under noenergy retrieving arrangement situation, the system ontology energy consumption is 6.4kWh/m
3, after using the utility model three covers pressure-exchange cell arrangement in parallel, the system ontology energy consumption is 2.4kWh/m
3Example, 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=1000 * 365 * 0.8 * 4.0 * 0.8/10000=93.44 (ten thousand yuan/year)
With 1000m
3The sea water desalinating plant of/d is an example, the system of the pressure-exchange cell arrangement that band the utility model three covers are in parallel, the about 42m of high-pressure pump flow
3/ h; Do not overlap the about 105m of system high pressure pumping capacity of pressure-exchange cell arrangement in parallel with the utility model three
3/ h.Adopt energy recycle device, can significantly reduce the investment of sea water desaltination high-pressure pump, economical efficiency is fairly obvious.
At last, it is also to be noted that, more than only be embodiment of the present utility model.Obviously the utility model is not limited to above embodiment, and a lot of modification can also be arranged.All modification that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (3)
1. the valve-regulated pressure-exchange cell arrangement of plug-in mounting is characterized in that it comprises a 3-position 4-way solenoid operated directional valve, two cartridge valves, two check valves and a pressure-exchange pipe composition; Being provided with a free piston in the described pressure-exchange pipe, and being divided into two working chambers, is respectively to be transferred liquid working chamber and discarded liquid working chamber;
One of described two check valves carry and be transferred liquid and prevent the adverse current check valve to being transferred the liquid working chamber for being used for, another extrudes from carry the liquid working chamber and prevents the adverse current check valve for high pressure is transferred liquid, and the described liquid working chamber that is transferred is communicated with described two check valves;
One in described two cartridge valves is the discarded liquid feed liquor cartridge valve of high pressure, and another is discharged for the discarded liquid of low pressure and uses cartridge valve, and described discarded liquid working chamber is communicated with described two cartridge valves;
Described solenoid operated directional valve is provided with valve rod and supplies the valve pocket of valve rod axial motion, and described valve pocket has P port, K
1Port, K
2Port, O port, P port are the discarded liquid import of high pressure, and the O port is discarded liquid discharge outlet, K
1Port and K
2Port is communicated with the control mouth of two cartridge valves respectively;
Described solenoid operated directional valve is provided with the electro-magnet of actuate valve stem axial motion, and described pressure-exchange cell arrangement is provided with programmable logic controller, and described electro-magnet and programmable logic controller are electrically connected;
Described P port, K
1Port, K
2Port, O port, the position of P port and solenoid operated directional valve valve rod have following matching relationship: valve rod has middle working position between first working position, second working position, first working position and second working position along its movement path; When first working position, P port and K
1Port is connected, O port and K
2Port is connected, when second working position, and P port and K
2Port is connected, O port and K
1Port is connected, when middle working position, and P port and K
1Port, K
2Port is connected.
2. the valve-regulated pressure-exchange cell arrangement of a kind of plug-in mounting according to claim 1, it is characterized in that being provided with permanent magnet in the described free piston, be provided with magnetic approach switch at pressure-exchange pipe two ends, magnetic approach switch and described programmable logic controller are electrically connected.
3. the valve-regulated pressure exchanger of plug-in mounting is characterized in that it is provided with many covers claim 1 and 2 described pressure-exchange cell arrangements in parallel, and each valve rod working position that overlaps the 3-position 4-way solenoid operated directional valve of pressure crosspoint device staggers switching time; Direction is to make the outlet that is transferred the check valve that liquid is forced out from be transferred the liquid working chamber by pipeline connection in each pressure-exchange cell arrangement, and direction is to make to be transferred hydraulic pressure and to go into to be transferred the import of the check valve in the liquid working chamber and pass through pipeline connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205922934U CN201882953U (en) | 2010-11-04 | 2010-11-04 | Cartridge valve controlled type pressure exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205922934U CN201882953U (en) | 2010-11-04 | 2010-11-04 | Cartridge valve controlled type pressure exchange device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201882953U true CN201882953U (en) | 2011-06-29 |
Family
ID=44180491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205922934U Expired - Lifetime CN201882953U (en) | 2010-11-04 | 2010-11-04 | Cartridge valve controlled type pressure exchange device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201882953U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442716A (en) * | 2011-12-09 | 2012-05-09 | 杭州水处理技术研究开发中心有限公司 | Valve control type energy recovery unit device |
| CN104261516A (en) * | 2014-09-19 | 2015-01-07 | 北京工业大学 | Piston-type liquid switcher-based liquid pressure energy recovery method |
-
2010
- 2010-11-04 CN CN2010205922934U patent/CN201882953U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442716A (en) * | 2011-12-09 | 2012-05-09 | 杭州水处理技术研究开发中心有限公司 | Valve control type energy recovery unit device |
| CN102442716B (en) * | 2011-12-09 | 2013-08-07 | 杭州水处理技术研究开发中心有限公司 | Valve control type energy recovery unit device |
| CN104261516A (en) * | 2014-09-19 | 2015-01-07 | 北京工业大学 | Piston-type liquid switcher-based liquid pressure energy recovery method |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20110629 |