CN104061205A - Pressure exchanger energy recovery cylinder - Google Patents
Pressure exchanger energy recovery cylinder Download PDFInfo
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- CN104061205A CN104061205A CN201410239012.XA CN201410239012A CN104061205A CN 104061205 A CN104061205 A CN 104061205A CN 201410239012 A CN201410239012 A CN 201410239012A CN 104061205 A CN104061205 A CN 104061205A
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Abstract
The invention discloses a pressure exchanger energy recovery cylinder. The pressure exchanger energy recovery cylinder adopts the structure that a left cylinder barrel and a right cylinder barrel are respectively mounted on the two sides of a central block; a piston rod is mounted on the central block; the two ends of the piston rod respectively extend into the left cylinder barrel and the right cylinder barrel to be connected with a left piston and a right piston; rare earth permanent magnets are mounted on the outer side ends of the left piston and the right piston; a left end cover and a right end cover are mounted on the outer side ends of the left cylinder barrel and the right cylinder barrel; magnetic approach switches mounted on a rack are respectively close to a left end cover and a right end cover; holes are formed in the left end cover and the right end cover; four aperture passages are formed in each of the top and the bottom of the central block; the four aperture passages in the top are in one-to-one correspondence with and connection with four connectors of a four-way rectifying valve; the four aperture passages in the bottom are in one-to-one correspondence with and connection with four connectors of a two-position four-way rectifying valve. The pressure exchanger energy recovery cylinder can automatically adapt to different shaft errors between the left and right cylinder barrels and the central block through a radial clearance between a piston counter bore and the piston rod, and has the advantages of compact structure, reliable operation, convenience in maintenance and the like.
Description
Technical field
The present invention relates to a kind of recovery with the mechanical device of hydraulic fluid overbottom pressure energy, the pressure-exchange energy referring in particular to for reverse osmosis seawater desalination system reclaims cylinder.
Background technique
Reverse osmosis seawater desalting is one of mainstream technology of current desalination of sea water.Reverse osmosis seawater desalting process need consume a large amount of electric energy and promote intake pressure to overcome the osmotic pressure of water, and high energy consumption is one of expensive principal element of desalination of sea water.And the brine overbottom pressure of discharging from reverse osmosis membrane in desalting process is up to 5.5-6.5MPa, this part energy is reclaimed and become the energy consumption that can significantly reduce reverse osmosis seawater desalting into water energy, and then reduce desalination of sea water cost.Because piston-type pressure exchange energy reclaiming device only needs through " pressure energy-pressure energy " step conversion process, energy recovery efficiency is up to 90%～95%, and manufacturing process is simple, for ease of maintenaince, thereby becomes the focus of domestic current research.
Chinese patent (publication number CN102040261A) discloses a kind of water-pressure automatic transposition energy recovery device.This device left and right piston movement is separate, because the pressure flow of low pressure seawater water inlet is different with the pressure flow of high-pressure thick salt solution water inlet, is difficult to guarantee two piston synchronous motions, easily causes system fluctuation of service; And the seawater that this device pumps need to just can enter film group device after suction booster supercharging, has increased the cost of investment of equipment.
Chinese patent (publication number CN201407250Y) discloses a kind of joint piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination.This device can not adapt to left and right cylinder barrel and middle contiguous block out-of-alignment problem, easily causes stuck piston and the excessive problem of friction, and the leakage between high low pressure cavity volume is easily caused in the gap simultaneously forming through piston due to piston rod, thereby reduces transmission efficiency.
Chinese patent (publication number CN2844477Y) discloses a kind of double-cylinder hydraulic energy recovery device.This device is comprised of two differential type hydraulic cylinders, can realize energy interchange supercharging between two media, but the axial dimension of package unit is relatively large, use material is more, between two cylinders, need flexible connection device simultaneously, reduced transmission efficiency, also easily produce noise.
Chinese patent (publication number CN101265925A) discloses a kind of pressurized machine.The relocation mechanism of this device can absorb piston rod and be applied to the eccentric load on piston, but because relocation mechanism is mainly comprised of beat bolt and support plate, pendulum angle is limited by the gap between piston and cylinder barrel, is only applicable to compared with the supercharging device of short stroke and small eccentricity.
Chinese patent (publication number CN103291671A) discloses a kind of floating piston bar pressurized cylinder.Being floated and be installed on piston by fastening flange in floating piston bar one end, can reduce the coaxality requirement of piston rod and piston, but install cumbersome, especially for bidirectional booster cylinder.
Chinese patent (publication number CN1230637A) discloses a kind of two-way supercharger, adopt pressure common source to become high-voltage power supply through pressure-increasing machine pressurization, but lack the relocation mechanism between piston and piston rod, can not adapt to left and right cylinder barrel and middle contiguous block out-of-alignment problem, commutation position limit switch is loaded on to cylinder barrel inside simultaneously, is unfavorable for maintenance and adjusts.
Summary of the invention
The object of this invention is to provide a kind of novel pressure-exchange energy and reclaim cylinder, can automatically adapt to left and right cylinder barrel and middle contiguous block out-of-alignment error, and make assembling easily, keep in repair easy to adjust, reliable.
The present invention solves the problems of the technologies described above with following technological scheme:
A kind of pressure-exchange energy of the present invention reclaims cylinder, it is mainly comprised of central block 10, piston rod 14, left piston 7, right piston 15 and left cylinder barrel 3, left end cap 1, right cylinder barrel 13, right end cap 18, left cylinder barrel 3 and right cylinder barrel 13 are arranged on respectively the left and right sides of central block 10 and form and be tightly connected, piston rod 14 is arranged on central block 10, the two ends, left and right of piston rod 14 extend respectively left cylinder barrel 3 and are also connected respectively left piston 7 and right piston 15 in right cylinder barrel 13, and the outboard end of left piston 7 and right piston 15 is provided with rare-earth permanent magnet; The outboard end of left cylinder barrel 3 and right cylinder barrel 13 is provided with left end cap 1 and right end cap 18; Be arranged on respectively magnetic approach switch 34 on support 35 and support 36 and magnetic approach switch 19 respectively near left end cap 1 and right end cap 18; On left end cap 1 and right end cap 18, have hole 1-1, hole 18-1; Central block 10 bottoms are provided with two-position four way change valve (can adopt the technology of the patent No.: ZL201120425218.3), top is provided with four-way rectifying valve, the one end in four ducts of four interfaces and central block bottoms of described two-position four way change valve is corresponding joining one by one, and the rodless cavity 38 of the right cylinder barrel 13 of another termination of duct, the right side 10-1 of central block bottom, the rodless cavity 48 of the left cylinder barrel 3 of another termination of duct, the left side 10-4 of central block bottom, the other end in two other duct is connected low-press thick salt solution and high-pressure thick salt solution through pipeline respectively; Four interfaces of described four-way rectifying valve and the one end in Si Ge duct, central block top be corresponding joining one by one, the rod chamber 37 of the right cylinder barrel 13 of another termination of duct, the right side 10-2 at central block top wherein, the rod chamber 49 of the left cylinder barrel 3 of another termination of duct, the left side 10-3 at central block top, the other end in two other duct is connected raw material seawater and high pressure sea water through pipeline respectively.
Described central block 10 is provided with two guide sleeves and two combined seal rings with the position of piston rod 14 assemblings with symmetrical form; Described left piston 7 is respectively equipped with two guide rings and an and combined seal ring with position and the right piston 15 of left cylinder barrel 3 assemblings with the position of right cylinder barrel 13 assemblings.
The intermediate section of described piston rod 14 is optical axis, and two ends, left and right respectively process one section of screw thread, between left end screw thread and optical axis, have respectively one section of diameter to be slightly smaller than the axle journal of thread section diameter between right-hand member screw thread and optical axis; On left piston 7 and right piston 15, all process the counterbore that one section of tapped hole and one section of diameter are a bit larger tham tapped hole, left piston 7 and right piston 15 are by screw thread precession and be stuck on piston rod 14, make the thread section of piston rod 14 be arranged in counterbore, the axle journal section of piston rod 14 is positioned at tapped hole.
Buffering plastics 33 and buffering plastics 23 are housed respectively in the counterbore of described left piston 7 and right piston 15, and buffering plastics are placed in the two ends shrinkage pool of piston rod 14, form transition fit.
Described rare-earth permanent magnet is fastened on the outside of left piston 7 and right piston 15 by hexagon socket countersunk flat cap head screw.
Described left cylinder barrel 3 and right cylinder barrel 13 are fixed on central block 10 by semi-ring, flange plate and set screws respectively, and left cylinder barrel 3 and right cylinder barrel 13 are respectively equipped with circular groove, and semi-ring is stuck in circular groove, and flange plate sticks semi-ring and is fastened on central block 10 by set screws; The joint of left cylinder barrel 3, right cylinder barrel 13 and central block 10 is respectively equipped with O type circle and seals.
Distance between distance between described magnetic approach switch 34 and left end cap 1 and magnetic approach switch 19 and right end cap 18 is adjustable.
The present invention compared with prior art has the following advantages:
1. piston rod of the present invention is adopt screw thread precession and block with being connected of piston, and structure forms simple, and without processing on piston, for counterbore and the tapped hole of pressing plate are installed, processing charges is few, low cost of manufacture.
2. the matching mechanism of piston rod of the present invention and piston can adapt to the disalignment error of piston rod, piston, middle contiguous block automatically, has guaranteed the reliable operation of reciprocating motion of the pistons energy exchanger.
3. the present invention adopts non-contact inductive commutation, when piston movement is during to cylinder barrel end, the magnetic force induction signal that utilizes rack-mount magnetic approach switch to receive rare-earth permanent magnet reaches the object of commutation, and magnetic approach switch can be according to the suitable adjusted position of needs of commutation, reliability and the validity of commutation have greatly been increased, guaranteed the effective travel of piston, not only reduced the processing cost of central block but also reduced difficulty of processing.
4. the present invention can compensate the pressure drop of high-pressure thick salt solution than pressure reduction and overcome the friction that exchanges cylinder inner carrier by changing piston rod and piston area, also can save the supercharging link of the suction booster of energy-recuperation system simultaneously.In working procedure, one of them rod chamber generation negative pressure can be directly by raw material seawater suction chamber in addition, therefore also low pressure raw water service pump can be saved simultaneously, be that whole system only needs a high-pressure service pump that high pressure sea water is provided, can simplify the structure of energy recycle device, can reduce the investment cost of suction booster, reduce system energy consumption simultaneously.
5. to utilize dexterously flange, semi-ring and central block that left and right cylinder barrel is connected as a whole in the present invention, makes that instrument configurations is compact, succinct, floor space is little, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the structural representation that pressure-exchange energy of the present invention reclaims cylinder.
Fig. 2 is A portion enlarged diagram in Fig. 1.
Fig. 3 is that the three-dimensional of pressure-exchange energy recovery cylinder of the present invention is dissectd design sketch.
Fig. 4 be in Fig. 3 B to view.
Fig. 5 be in Fig. 3 C to view.
Fig. 6 is working condition one schematic diagram that pressure-exchange energy of the present invention reclaims cylinder.
Fig. 7 is working condition two schematic diagram that pressure-exchange energy of the present invention reclaims cylinder.
In figure: 1-left end cap, 1-1-left end cap hole, 2-O type circle, 3-left cylinder barrel, 4-hexagon socket countersunk flat cap head screw, 5-rare-earth permanent magnet, 6-combined seal ring, 7-left piston, 8-semi-ring, 9-flange plate, 10-central block, 10-1-duct, 10-2-duct, 10-3-duct, 10-4-duct, 11-flange plate, 12-semi-ring, 13-right cylinder barrel, 14-piston rod, 15-right piston, 16-combined seal ring, 17-O type circle, 18-right end cap, 18-1-right end cap hole, 19-magnetic approach switch, 20-hexagon socket countersunk flat cap head screw, 21-rare-earth permanent magnet, 22-guide ring, 23-right buffering plastics, 24-O type circle, 25-set screws, 26-combined seal ring, 27-guide sleeve, 28-guide sleeve, 29-combined seal ring, 30-set screws, 31-O type circle, 32-guide ring, 33-left buffering plastics, 34-magnetic approach switch, 35-support, 36-support, 37-rod chamber, 38-rodless cavity, 39-pipeline, 40-pipeline, 41-pipeline, 42-pipeline, 43-pipeline, 44-pipeline, 45-pipeline, 46-pipeline, 47-pipeline, 48-rodless cavity, 49-rod chamber.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, a kind of pressure-exchange energy recovery of the present invention cylinder is mainly comprised of central block 10, piston rod 14, left piston 7, right piston 15 and left cylinder barrel 3, left end cap 1, right cylinder barrel 13, right end cap 18 etc.Left cylinder barrel 3 and right cylinder barrel 13 are arranged on respectively the left and right sides of central block 10 and form and be tightly connected, piston rod 14 is arranged on central block 10, the two ends, left and right of piston rod 14 extend respectively left cylinder barrel 3 and are also connected respectively left piston 7 and right piston 15 in right cylinder barrel 13, and the outboard end of left cylinder barrel 3 and right cylinder barrel 13 is installed respectively left end cap 1 and right end cap 18; On left end cap 1 and right end cap 18, have left end cap hole 1-1 and right end cap hole 18-1; Central block 10 bottoms are provided with two-position four way change valve, top is provided with four-way rectifying valve, the one end in four ducts of four interfaces and central block bottoms of described two-position four way change valve is corresponding joining one by one, four ducts, central block bottom assume diamond in shape as shown in Figure 4 symmetrical, and another termination rodless cavity 38 of duct, right side 10-1 of central block bottom, another termination rodless cavity 48 of duct, the left side 10-4 of central block bottom, the other end in two other duct is connected low-press thick salt solution and high-pressure thick salt solution through pipeline 42, pipeline 39 respectively; Four interfaces of described four-way rectifying valve and the one end in Si Ge duct, central block top be corresponding joining one by one, Si Ge duct, central block top assumes diamond in shape as shown in Figure 5 symmetrical, wherein the other end of duct, the right side 10-2 at central block top connects rod chamber 37, duct, the left side 10-3 the other end at central block top connects rod chamber 49, and the other end in two other central block duct is connected raw material seawater and high pressure sea water through pipeline 44, pipeline 47 respectively.
On described central block 10, be processed with piston rod pilot hole, piston rod 14 is arranged in the piston rod pilot hole on central block 10, on central block 10, with symmetric form, combined seal ring 26, combined seal ring 29 and guide sleeve 27, guide sleeve 28 are housed, combined seal ring 26, combined seal ring 29 and guide sleeve 27, guide sleeve 28 seal and leading role for piston rod 14 provides.
Described left piston 7 is provided with a combined seal ring 6 and two guide rings 32 with the position of left cylinder barrel 3 assemblings, and combined seal ring 6 and guide ring 32 seal and leading role for left piston 7 provides; Right piston 15 is provided with a combined seal ring 16 and two guide rings 22 with the position of right cylinder barrel 13 assemblings, and combined seal ring 16 and guide ring 22 seal and leading role for right piston 15 provides.
As shown in Figure 1, the intermediate section of piston rod 14 is optical axis, and two ends, left and right respectively process one section of screw thread, between left end screw thread and optical axis, have respectively one section of diameter to be slightly smaller than the axle journal of thread section diameter between right-hand member screw thread and optical axis; On left piston 7 and right piston 15, all process the counterbore that one section of tapped hole and one section of diameter are a bit larger tham tapped hole, left piston 7 and right piston 15 are by screw thread precession and be stuck on piston rod 14, make the thread section of piston rod 14 be arranged in counterbore, the axle journal section of piston rod 14 is positioned at tapped hole.Each coordinates between section above all has radial clearance Δ as shown in Figure 2, thereby forms the radial floating structure of piston and piston rod, automatically adapts to the disalignment error of left and right cylinder barrel and central block.Left buffering plastics 33 and right buffering plastics 23 are pressed in the aperture of piston rod 14 ends and are placed in the counterbore of piston, form transition fit, the effect cushioning while playing piston rod 14 with left and right piston collisions and the effect that reduces noise.
As shown in Figure 1, on described left piston 7, rare-earth permanent magnet 5 is housed, rare-earth permanent magnet 5 is fastened on left piston 7 by hexagon socket countersunk flat cap head screw 4, on described right piston 15, rare-earth permanent magnet 21 is housed, and rare-earth permanent magnet 21 is fastened on right piston 15 by hexagon socket countersunk flat cap head screw 20.
As shown in Figure 1, described central block 10 is fixed together by semi-ring 8, flange plate 9 and set screws 30 with left cylinder barrel 3, wherein semi-ring 8 is stuck in the circular groove on left cylinder barrel 3, flange plate 9 is enclosed within and on left cylinder barrel 3, sticks semi-ring 8 and be fastened on central block 10 by set screws 30, thereby left cylinder barrel 3 is fixed on central block 10.Described central block 10 is fixed together by semi-ring 12, flange plate 11 and set screws 25 with right cylinder barrel 13, wherein semi-ring 12 is stuck in the circular groove on right cylinder barrel 13, flange plate 11 is enclosed within and on right cylinder barrel 13, sticks semi-ring 12 and be fastened on central block 10 by set screws 25, thereby right cylinder barrel 13 is fixed on central block 10.Central block 10 is with left cylinder barrel 3 joints and central block 10, with right cylinder barrel 13 joints, O type circle 31 is housed respectively and O type circle 24 seals.
As shown in Figure 1, described left end cap 1 is welded on left cylinder barrel 3, in the circular groove that O type circle 2 is contained on left end cap 1, plays seal action, and right end cap 18 is welded on right cylinder barrel 13, in the circular groove that O type circle 17 is contained on right end cap 18, plays seal action.Be provided with magnetic approach switch 34 approaching left end cap 1 place, be provided with magnetic approach switch 19 approaching right end cap 18 places, magnetic approach switch 34 is arranged on support 35, and magnetic approach switch 19 is arranged on support 36, and the position of support 35 and support 36 can regulate arbitrarily.
As shown in Figure 6,7, for reclaiming cylinder, pressure-exchange energy of the present invention is applied to the working principle schematic diagram in a kind of reverse osmosis seawater desalination system.Conventionally, by motor, drive high-pressure service pump, make raw material seawater pump into reverse osmosis membrane through pipeline 43 and process.Use when of the present invention, pressure-exchange energy of the present invention is reclaimed to left cylinder barrel 3 and the right cylinder barrel 13 of cylinder and by pipeline, send into liquid respectively, its working state is divided into one, 2 two working condition, and two operating modes hocket.
As shown in Figure 6, in working condition for the moment, the high-pressure thick salt solution reclaiming from reverse osmosis membrane is successively by pipeline 39, two-position four way change valve (can adopt the technology of the patent No.: ZL201120425218.3), duct 10-1, pipeline 40, right end cap hole 18-1 enters rodless cavity 38, and promote right piston 15 and be moved to the left, because the area of right piston 15 right-hand members is greater than the area of right piston 15 left ends, now the seawater of rod chamber 37 is pressurized, through duct 10-2, pipeline 46, four-way rectifying valve, pipeline 47 imports high pressure sea water, simultaneously rod chamber 49 produce negative pressure by raw material seawater via pipeline 43, pipeline 44, four-way rectifying valve, pipeline 45, in the 10-3 suction chamber of duct, low-press thick salt solution in rodless cavity 48 is pushed and is passed through successively left end cap hole 1-1 by left piston 7, pipeline 41, duct 10-4, two-position four way change valve, pipeline 42 exhaust energies reclaim cylinder.
As shown in Figure 7, when working condition two, the high-pressure thick salt solution reclaiming from reverse osmosis membrane is successively by pipeline 39, two-position four way change valve, duct 10-4, pipeline 41, left end cap hole 1-1 enters rodless cavity 48, and promote left piston 7 and move right, because the area of left piston 7 left ends is greater than the area of left piston 7 right-hand members, now the seawater of rod chamber 49 is pressurized, through duct 10-3, pipeline 45, four-way rectifying valve, pipeline 47 imports high pressure sea water, simultaneously rod chamber 37 produce negative pressure by raw material seawater via pipeline 43, pipeline 44, four-way rectifying valve, pipeline 46, in the 10-2 suction chamber of duct, low-press thick salt solution in rodless cavity 38 is pushed and is passed through successively right end cap hole 18-1 by right piston 15, pipeline 40, duct 10-1, two-position four way change valve, pipeline 42 exhaust energies reclaim cylinder.
Two working conditions be alternately to complete by being arranged on the rare-earth permanent magnet 5 on left piston 7, the magnetic approach switch 34 on support 35, the rare-earth permanent magnet 21 on right piston 15, magnetic approach switch 19 and the two-position four way change valve on support 36.At pressure-exchange energy of the present invention, reclaim cylinder in working condition once, when rare-earth permanent magnet 5 approaches magnetic approach switch 34 along with left piston 7 to left movement, magnetic approach switch 34 receives the magnetic induction of rare-earth permanent magnet 5 and sends electrical signal and replace to two-position four way change valve, makes pressure-exchange energy of the present invention reclaim cylinder and enters working condition two.When rare-earth permanent magnet 21 approaches magnetic approach switch 19 along with right piston 15 moves right, magnetic approach switch 19 receives the magnetic induction of rare-earth permanent magnet 21 and sends electrical signal and replace to two-position four way change valve, makes novel pressure exchange energy reclaim cylinder and enters working condition one.So piston to-and-fro motion in cylinder barrel completes the process that high-pressure thick salt solution energy passes to raw material seawater.
The present invention is not limited to above-described embodiment, also may be implemented in other recovery with the pressurized cylinder of hydraulic fluid overbottom pressure energy.
Claims (7)
1. a pressure-exchange energy reclaims cylinder, it is characterized in that: it is mainly by central block (10), piston rod (14), left piston (7), right piston (15) and left cylinder barrel (3), left end cap (1), right cylinder barrel (13), right end cap (18) forms, left cylinder barrel (3) and right cylinder barrel (13) are arranged on respectively the left and right sides of central block (10) and form and be tightly connected, piston rod (14) is arranged on central block (10), the two ends, left and right of piston rod (14) extend respectively left cylinder barrel (3) with in right cylinder barrel (13) and be connected left piston (7) and right piston (15), the outboard end of left piston (7) and right piston (15) is provided with rare-earth permanent magnet, the outboard end of left cylinder barrel (3) and right cylinder barrel (13) is provided with left end cap (1) and right end cap (18), be arranged on respectively magnetic approach switch (34) on support (35) and support (36) and magnetic approach switch (19) respectively near left end cap (1) and right end cap (18), on left end cap (1) and right end cap (18), have hole (1-1) and hole (18-1), central block (10) bottom is provided with two-position four way change valve, top is provided with four-way rectifying valve, the one end in four ducts of four interfaces and central block bottoms of described two-position four way change valve is corresponding joining one by one, and the rodless cavity (38) of the right cylinder barrel of another termination (13) in the duct, right side (10-1) of central block bottom, the rodless cavity (48) of the left cylinder barrel of another termination (3) in the duct, left side (10-4) of central block bottom, the other end in two other duct is connected low-press thick salt solution and high-pressure thick salt solution through pipeline respectively, four interfaces of described four-way rectifying valve and the one end in Si Ge duct, central block top be corresponding joining one by one, the rod chamber (37) of the right cylinder barrel of another termination (13) in the duct, right side (10-2) at central block top wherein, the rod chamber (49) of the left cylinder barrel of another termination (3) in the duct, left side (10-3) at central block top, the other end in two other duct is connected raw material seawater and high pressure sea water through pipeline respectively.
2. pressure-exchange energy reclaims cylinder according to claim 1, it is characterized in that: described central block (10) is provided with two guide sleeves and two combined seal rings with the position of piston rod (14) assembling with symmetrical form; Described left piston (7) is respectively equipped with two guide rings and a combined seal ring with position and the right piston (15) of left cylinder barrel (3) assembling with the position of right cylinder barrel (13) assembling.
3. pressure-exchange energy reclaims cylinder according to claim 1, it is characterized in that: the intermediate section of described piston rod (14) is optical axis, two ends, left and right respectively process one section of screw thread, between left end screw thread and optical axis, have respectively one section of diameter to be slightly smaller than the axle journal of thread section diameter between right-hand member screw thread and optical axis; On left piston (7) and right piston (15), all process the counterbore that one section of tapped hole and one section of diameter are a bit larger tham tapped hole, left piston (7) and right piston (15) are by screw thread precession and be stuck on piston rod (14), make the thread section of piston rod (14) be arranged in counterbore, the axle journal section of piston rod (14) is positioned at tapped hole.
4. pressure-exchange energy reclaims cylinder according to claim 3, it is characterized in that: buffering plastics (33) and buffering plastics (23) are housed respectively in the counterbore of described left piston (7) and right piston (15), buffering plastics are placed in the two ends shrinkage pool of piston rod (14), form transition fit.
5. pressure-exchange energy reclaims cylinder according to claim 1, it is characterized in that: described rare-earth permanent magnet is fastened on the outside of left piston (7) and right piston (15) by hexagon socket countersunk flat cap head screw.
6. pressure-exchange energy reclaims cylinder according to claim 1, it is characterized in that: described left cylinder barrel (3) and right cylinder barrel (13) are fixed on central block (10) by semi-ring, flange plate and set screws respectively, left cylinder barrel (3) and right cylinder barrel (13) are respectively equipped with circular groove, semi-ring is stuck in circular groove, and flange plate sticks semi-ring and is fastened on central block (10) by set screws; The joint of left cylinder barrel (3), right cylinder barrel (13) and central block (10) is respectively equipped with O type circle and seals.
7. pressure-exchange energy according to claim 1 reclaims cylinder, it is characterized in that: the distance between the distance between described magnetic approach switch (34) and left end cap (1) and magnetic approach switch (19) and right end cap (18) is adjustable.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106369015A (en) * | 2016-09-07 | 2017-02-01 | 上海空间推进研究所 | Pressure difference type energy recycling pump |
| CN108005865A (en) * | 2017-12-03 | 2018-05-08 | 国家海洋局天津海水淡化与综合利用研究所 | Radial rotor formula energy recycle device |
| CN111745781A (en) * | 2020-07-24 | 2020-10-09 | 中南大学 | Double-cylinder driven large-span double-eccentric rotary vibration self-feedback synchronization method and device |
| CN114057245A (en) * | 2020-07-30 | 2022-02-18 | 中国石油化工股份有限公司 | Pressure energy recovery device |
| CN116272373A (en) * | 2023-04-06 | 2023-06-23 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106369015A (en) * | 2016-09-07 | 2017-02-01 | 上海空间推进研究所 | Pressure difference type energy recycling pump |
| CN108005865A (en) * | 2017-12-03 | 2018-05-08 | 国家海洋局天津海水淡化与综合利用研究所 | Radial rotor formula energy recycle device |
| CN111745781A (en) * | 2020-07-24 | 2020-10-09 | 中南大学 | Double-cylinder driven large-span double-eccentric rotary vibration self-feedback synchronization method and device |
| CN114057245A (en) * | 2020-07-30 | 2022-02-18 | 中国石油化工股份有限公司 | Pressure energy recovery device |
| CN114057245B (en) * | 2020-07-30 | 2023-02-03 | 中国石油化工股份有限公司 | Pressure energy recovery device |
| CN116272373A (en) * | 2023-04-06 | 2023-06-23 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
| CN116272373B (en) * | 2023-04-06 | 2023-09-15 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
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|---|---|
| CN104061205B (en) | 2016-01-27 |
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