CN217873234U - Self-pressurization energy recovery high-pressure pump - Google Patents
Self-pressurization energy recovery high-pressure pump Download PDFInfo
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- CN217873234U CN217873234U CN202221951652.XU CN202221951652U CN217873234U CN 217873234 U CN217873234 U CN 217873234U CN 202221951652 U CN202221951652 U CN 202221951652U CN 217873234 U CN217873234 U CN 217873234U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model relates to a from pressure boost energy recuperation high-pressure pump, it includes: the first cylinder body is provided with a low-pressure raw water inlet and a high-pressure raw water outlet; the second cylinder body is provided with a low-pressure raw water inlet and a high-pressure raw water outlet; the piston assembly comprises 2 pistons and a piston rod, the pistons are respectively positioned in the first cylinder body and the second cylinder body, two ends of the piston rod are respectively fixedly connected with the 2 pistons, a reversing pore channel along the axial direction of the piston rod is arranged in the piston rod, two ends of the reversing pore channel are respectively communicated with the rodless cavities of the first cylinder body and the second cylinder body, and a first liquid flow hole for communicating the reversing pore channel with the outside of the piston rod is arranged on the side wall of the piston rod; and the reversing valve is controlled to reverse by the flowing water in the first liquid flow hole so as to enable the piston rod to reciprocate. The utility model discloses energy loss is little, has optimized reverse osmosis system design flow, has solved the higher problem of small-size reverse osmosis seawater desalination system energy consumption, and the effective energy conversion efficiency that its dense water residual pressure utilized can reach more than 91%.
Description
Technical Field
The utility model relates to a sea water reverse osmosis energy recovery pump technical field specifically is a from pressure boost energy recovery high-pressure pump.
Background
The reverse osmosis desalination technology is that a high-pressure pump is used for pressurizing the raw seawater to ensure that the pressure of the raw seawater reaches the operating pressure required by reverse osmosis, the pressurized raw water flows into a reverse osmosis membrane pressure vessel, the fresh water formed by the raw water permeating the reverse osmosis membrane becomes product water, and strong brine which does not permeate the reverse osmosis membrane is discharged with high pressure.
An important goal of the development of reverse osmosis desalination technology is to reduce the operation cost, and the energy consumption accounts for the greatest proportion of the composition of the operation cost, so the reduction of the energy consumption is the most effective means for reducing the reverse osmosis desalination cost. Generally speaking, for medium-large scale reverse osmosis seawater desalination plants, the ton water energy consumption is reduced to 3.8-4.5 kWh, while the ton water energy consumption of small scale seawater desalination plants is as high as 9-12 kWh. The main reasons are two: firstly, the efficiency of a large high-pressure pump used for a reverse osmosis seawater desalination system is higher than that of a small high-pressure pump; and secondly, no energy recovery equipment suitable for a small reverse osmosis seawater desalination device exists, and if the energy recovery equipment type of a larger reverse osmosis seawater desalination device is adopted, the type selection is difficult, or the investment is not economical. Therefore, the improvement of the efficiency of the high-pressure pump and the recovery and utilization of the residual pressure of the strong brine are the two most important directions for reducing the operation cost.
The energy recovery technology is a technology for recovering and utilizing the residual pressure of the strong brine of the reverse osmosis system, and the energy carried by the strong brine can be utilized by using the energy recovery technology, so that more than half of energy consumption can be saved. In a typical reverse osmosis seawater desalination system, two sets of equipment, namely a high-pressure pump and a booster pump, are required to pressurize seawater: the high-pressure pump is used for directly pressurizing the inlet water before reverse osmosis to the required operating pressure of the reverse osmosis system; the booster pump is used for boosting the raw material seawater to the pressure required by the pretreatment process section; the reverse osmosis concentrated water flows back to the high-pressure pump to better utilize the energy of the concentrated water and reduce the energy consumption of the system. The two parts of raw material seawater are converged and enter a reverse osmosis membrane for desalination. Because two sets of pressurizing equipment are needed, the system has complex flow, high investment and large operation and maintenance difficulty, and is not suitable for a small-scale reverse osmosis seawater desalination system.
Chinese patent CN102588240A discloses a reverse osmosis seawater desalination self-pressurization energy recovery high-pressure pump, which comprises: a center block having a plurality of internal flow passages formed therein; a reversing control valve which is positioned above the central block, is communicated with the internal flow passage of the central block and is provided with a high-pressure brine hole and a first discharge hole and a second discharge hole which are respectively and symmetrically positioned at two sides of the high-pressure brine hole; the guide control valve is positioned below the central block, is communicated with the internal flow passage of the central block, and is provided with an original seawater inlet hole and a third discharge hole and a fourth discharge hole which are symmetrically arranged at two sides of the original seawater inlet hole respectively; the first hydraulic cylinder is positioned on the left side of the central block, is communicated with the internal flow passage of the central block and is symmetrically provided with a first liquid flow hole and a second liquid flow hole; and the second hydraulic cylinder is positioned on the right side of the central block, is communicated with the internal flow passage of the central block and is symmetrically provided with a third hydraulic hole and a fourth hydraulic hole. The utility model discloses a be applicable to small-size reverse osmosis sea water desalination, but high-pressure salt water need promote two switching-over valves and a piston rod when it uses, and energy loss is great.
SUMMERY OF THE UTILITY MODEL
The utility model provides a from pressure boost energy recuperation high-pressure pump to solve current energy recuperation equipment and do not support small-size equipment, small-size reverse osmosis sea water desalination system energy consumption height and the big technical problem of waiting of current energy recuperation equipment energy loss.
In order to solve the technical problem, the utility model provides a technical scheme does:
the utility model relates to a from pressure boost energy recuperation high-pressure pump, it includes:
the first cylinder body is provided with a low-pressure raw water inlet and a high-pressure raw water outlet;
the second cylinder body is provided with a low-pressure raw water inlet and a high-pressure raw water outlet;
the piston assembly comprises 2 pistons and a piston rod, the pistons are respectively positioned in the first cylinder body and the second cylinder body, two ends of the piston rod are respectively fixedly connected with the 2 pistons, a reversing pore channel along the axial direction of the piston rod is arranged in the piston rod, two ends of the reversing pore channel are respectively communicated with the rodless cavities of the first cylinder body and the second cylinder body, and a first liquid flow hole for communicating the reversing pore channel with the outside of the piston rod is arranged on the side wall of the piston rod;
the reversing valve is provided with a high-pressure concentrated water inlet and a low-pressure concentrated water outlet, the first cylinder body is hermetically arranged at one end of the reversing valve, the second cylinder body is hermetically arranged at the other end of the reversing valve, the piston rod penetrates through the reversing valve, the first liquid flow hole is positioned in the reversing valve, and the reversing valve is controlled by the flowing water in the first liquid flow hole to be reversed so as to enable the piston rod to reciprocate.
Preferably, the reversing valve comprises a valve shell and a concentrated water guide ring, a high-pressure concentrated water inlet and a low-pressure concentrated water outlet are arranged on the outer wall of the valve shell, a rod sleeve is arranged in the valve shell, the rod sleeve is sleeved on the piston rod and is in sliding fit with the piston rod, second liquid flow holes are respectively arranged on the side walls of the two ends of the rod sleeve, the second liquid flow holes are communicated with the inside and the outside of the rod sleeve, the second liquid flow holes correspond to the first liquid flow holes in position, the concentrated water guide ring is sleeved on the rod sleeve and is in sliding fit with the rod sleeve, the concentrated water guide ring comprises a first ring piece and a second ring piece positioned in the first ring piece, the middle parts of the first ring piece and the second ring piece are fixedly connected through an annular partition plate, the annular partition plate penetrates through the second ring piece, the inner side of the annular partition plate is in sliding fit with the rod sleeve, a high-pressure concentrated water cavity is formed between the first ring piece and the valve shell, the high-pressure concentrated water cavity is communicated with the high-pressure water inlet, the two ends of the first ring piece are respectively provided with third liquid flow holes, a reversing cavity is formed between the second ring piece and the right side of the first ring piece, the reversing cavity is communicated with the right side of the first liquid flow hole, and the fourth liquid flow hole, when the fourth liquid flow hole is communicated with the right side of the first liquid guide ring, the right side of the second liquid cylinder, and the right side of the second liquid flow hole; when the concentrated water guide ring is located at the left limit position, the left third liquid flow hole on the second annular component is communicated with the left fourth liquid flow hole.
Preferably, 2 low-pressure concentrated water outlets are arranged on the valve shell, the high-pressure concentrated water inlet is positioned between the 2 low-pressure concentrated water outlets, annular flow stopping parts are arranged at two ends of the first ring piece, when the concentrated water guide ring is positioned at the right limit position, the flow stopping part on the right side of the first ring piece blocks the low-pressure concentrated water outlet on the right side, and the low-pressure concentrated water outlet on the left side is communicated with the fourth liquid flow hole on the left side; when the concentrated water guide ring is located at the limit position of the left side, the flow stopping part on the left side of the first ring piece blocks the low-pressure concentrated water outlet on the left side, and the low-pressure concentrated water outlet on the right side is communicated with the fourth liquid flow hole on the right side.
Preferably, the rod sleeve is further provided with a fifth liquid flow hole, the fifth liquid flow hole is located on the outer side of the second liquid flow hole, the valve shell is provided with a low-pressure raw water outlet, the fifth liquid flow hole is communicated with the interior of the rod sleeve and the low-pressure raw water outlet, when the first liquid flow hole on the piston rod is communicated with the second liquid flow hole, the first flow guide groove on the other side of the piston rod is simultaneously communicated with the second liquid flow hole and the fifth liquid flow hole on the same side, so that water flow in the reversing cavity on the side is discharged to the outside through the second liquid flow hole and the fifth liquid flow hole sequentially, the reversing resistance of the concentrated water flow guide ring is reduced, and the energy loss is reduced.
Preferably, two ends of the reversing pore canal are respectively provided with a one-way valve which only enables liquid to flow into the reversing pore canal, and the raw water in the first cylinder body or the second cylinder body drives the concentrated water guide ring to reverse; the low-pressure raw water inlets on the first cylinder body and the second cylinder body are provided with one-way valves only allowing liquid to flow in, and the high-pressure raw water outlets on the first cylinder body and the second cylinder body are provided with one-way valves only allowing liquid to flow out.
Preferably, the outer wall of the piston rod is provided with an annular second guide groove, and the first fluid hole is located in the second guide groove and used for improving the fault-tolerant rate of the connection of the first fluid hole and the second fluid hole, so that the first fluid hole and the second fluid hole can be conveniently connected without aligning the first fluid hole and the second fluid hole intentionally, and the piston rod is convenient to use.
Preferably, the area between the first ring member and the second ring member is divided into a left first cavity and a right first cavity by an annular partition plate, the two first cavities are communicated with each other through holes in the annular partition plate, an annular check ring extends towards the inner side of the valve shell on the end cover, the outer side of the annular check ring is in sliding fit with the first ring member, the inner side of the annular check ring is in sliding fit with the second ring member, when the thick water diversion ring is located at the right limit position, the annular check ring at the right side is located at the left side of the third liquid flow hole at the right side, the annular check ring at the left side is located at the left side of the third liquid flow hole at the left side, when the thick water diversion ring is located at the left limit position, the annular check ring at the left side is located at the right side of the third liquid flow hole at the left side, and the annular check ring at the right side is located at the right side of the third liquid flow hole at the right side.
Preferably, a first flow guide ring and a second flow guide ring are arranged on the inner side of the end cover, one end of the first flow guide ring is in contact with the end cover, the other end of the first flow guide ring is provided with a turnover part which is turned over outwards, the outer side of the turnover part is in contact with a connecting part between the annular retainer ring and the end cover, a second cavity is formed between the turnover part and the end cover, the second cavity is communicated with the fifth liquid flow hole, a flow blocking ring is arranged on the inner side of the first flow guide ring, and the flow blocking ring is positioned between the second liquid flow hole and the fifth liquid flow hole to separate the second liquid flow hole from the fifth liquid flow hole; one end and the end cover contact of second guiding ring, the lateral wall and the valve casing laminating of second guiding ring, the inside wall and the annular retaining ring of second guiding ring and the laminating of the connecting portion between the end cover are equipped with annular third guiding gutter on the lateral wall of second guiding ring, third guiding gutter and second cavity switch-on, the raw water delivery port of low pressure is put through to the third guiding gutter.
Preferably, a flow guide opening is formed in one end, which is in contact with the end cover, of the first flow guide ring, and the flow guide opening is communicated with the fifth liquid flow hole and the second cavity; and the second guide ring is provided with a radial sixth liquid flow hole, the sixth liquid flow hole is positioned in the third guide groove, and the sixth liquid flow hole is communicated with the second cavity and the third guide groove.
Preferably, the second flow guiding ring is provided with a first flow channel which is axially arranged, the fourth flow hole is communicated with the low-pressure concentrated water outlet or the high-pressure concentrated water inlet through the first flow channel, the connecting part at the inner side of the end cover is provided with a seventh flow hole, the sixth flow hole is communicated with the seventh flow hole, the fifth flow hole is communicated with the second cavity through the flow guiding opening, the second cavity is communicated with the seventh flow hole through the sixth flow hole through a third flow guiding groove, and the third flow guiding groove is communicated with the low-pressure raw water outlet and the low-pressure raw water outlet.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
1. the utility model relates to a self-supercharging energy recovery high-pressure pump, which uses high-pressure concentrated water discharged by a reverse osmosis device and raw water in a first cylinder body and a second cylinder body as the drive of a piston rod together to produce high-pressure raw water; raw water in the first cylinder body and the second cylinder body is used as the reversing drive of the concentrated water guide ring; dense water conservancy diversion ring is equivalent to a switching-over case, through the utility model provides an ingenious liquid stream pore structure realizes its automatic switch-over, does not use the energy of high-pressure dense water during the switching-over, reduces the energy consumption of high-pressure dense water, has more efficient energy conversion efficiency.
2. The utility model relates to a from pressure boost energy recuperation high-pressure pump is equipped with first guiding gutter on the piston rod, when first discharge orifice and the switch-on of second discharge orifice on the piston rod, the first guiding gutter of opposite side switch-on simultaneously second discharge orifice and the fifth discharge orifice of homonymy on the piston rod, make the rivers in the switching-over intracavity of this side loop through second discharge orifice and fifth discharge orifice to the outside, carry out the pressure release to the switching-over intracavity, reduce the switching-over resistance of dense water conservancy diversion ring, further reduce energy loss.
3. The utility model relates to a from pressure boost energy recuperation high-pressure pump only needs the former sea water working shaft of leading low pressure during the use, can directly promote the pressure of raw water to the required operating pressure of reverse osmosis system, and need not to install extra high-pressure pump, booster pump again, makes reverse osmosis system design flow simpler, has reduced small-size reverse osmosis desalination device's volume and weight, has reduced equipment investment and system energy consumption, the utility model discloses the effective energy conversion efficiency that high-pressure dense water residual pressure utilized can reach more than 91%.
4. By adopting the small reverse osmosis seawater desalination system of the self-pressurization energy recovery high-pressure pump, the energy consumption of each ton of water is reduced by about half compared with that of other small seawater desalination devices. Compared with actual measurement, the energy consumption of the small seawater desalination device in the current market is more than 9-12 kWh, while the ton water energy consumption of the small reverse osmosis seawater desalination device adopting the self-pressurization energy recovery high-pressure pump is 4-5 kWh, and the energy saving rate can reach 67%; the method can be used for reverse osmosis desalination devices with the scale within 50 tons/day of fresh water produced per day, can be used for reverse osmosis desalination devices with the scale within 0.5 ton/day at the lowest, and is favorable for popularization and use in small and medium-sized reverse osmosis seawater desalination systems.
5. The utility model relates to a from pressure boost energy recuperation high-pressure pump through changing the ratio of piston rod area and piston area, changes the pressure that provides and will the utility model discloses the reverse osmosis system's that acts on water production rate, the volume of output fresh water and the input raw water ratio control promptly are between 8% ~ 25%, and the design is the fixed value to be applicable to different specification reverse osmosis system's the water pressure demand of producing.
6. The utility model relates to a from pressure boost energy recuperation high-pressure pump has reduced the requirement to high-pressure pump owing to for from the pressure boost mode, still can pressurize reverse osmosis system operating pressure, consequently, entire system changes in the combination of realizing with new forms of energy such as solar energy, wind energy.
Drawings
Fig. 1 is a perspective view of a self-pressurizing energy recovery high-pressure pump in accordance with the present invention;
FIG. 2 is a front view of a self-pressurizing energy recovery high pressure pump in accordance with the present invention;
FIG. 3 is a cross-sectional view of a self-pressurizing energy recovery high pressure pump in accordance with the present invention;
fig. 4 is a perspective view of the middle concentrated water guide ring of the present invention;
fig. 5 is a perspective view of the middle end cap of the present invention;
fig. 6 is a perspective view of a second deflector ring according to the present invention;
fig. 7 is a perspective view of a first deflector ring of the present invention;
fig. 8 is a perspective view of the piston rod of the present invention;
fig. 9 is a schematic diagram of the working process of the present invention.
In the figure: 1. a first cylinder body 11, a low-pressure raw water inlet 12, a high-pressure raw water outlet 13, a rodless cavity 14, a rod cavity 2, a second cylinder body 21, a low-pressure raw water inlet 22, a high-pressure raw water outlet 23, a rodless cavity 24, a rod cavity 3, a reversing valve 31, a high-pressure concentrated water inlet 32, a low-pressure concentrated water outlet 33, a low-pressure concentrated water outlet 34, a low-pressure raw water outlet 35, a low-pressure raw water outlet 36, a high-pressure concentrated water cavity 4, a concentrated water guide ring 41, a first ring member 42, a second ring member 43, a third liquid flow hole 44, a flow stopping part 45, a first cavity 46 and a reversing cavity, 47, an annular partition plate, 48, a through hole, 5, an end cover, 51, a fourth fluid hole, 52, a seventh fluid hole, 53, an annular retainer ring, 54, a connecting part, 6, a second guide ring, 61, a third guide groove, 62, a sixth fluid hole, 63, a first flow passage, 7, a first guide ring, 71, a turnover part, 72, a guide opening, 73, a flow blocking ring, 74, a second cavity, 8, a piston, 81, a combined sealing element, 9, a rod sleeve, 91, a second fluid hole, 92, a fifth fluid hole, 10, a piston rod, 101, a first guide groove, 102, a first fluid hole, 103, a reversing hole, 104, a second guide groove, 20 and a one-way valve.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
In order to solve the technical problem, the utility model provides a technical scheme does:
referring to fig. 1 to 9, the present invention relates to a self-pressurizing energy recovery high-pressure pump, which includes:
the device comprises a first cylinder body 1, wherein a low-pressure raw water inlet 11 and a high-pressure raw water outlet 12 are arranged on the first cylinder body 1;
the second cylinder body 2, the second cylinder body 2 is equipped with the low-pressure raw water inlet 21 and high-pressure raw water outlet 22;
the piston assembly comprises pistons 8 and piston rods 10, wherein 2 pistons 8 are arranged and are respectively positioned in a first cylinder body 1 and a second cylinder body 2, two ends of each piston rod 10 are respectively fixedly connected with the 2 pistons 8, a reversing pore channel 103 along the axial direction of each piston rod 10 is arranged in each piston rod 10, two ends of each reversing pore channel 103 are respectively communicated with a rodless cavity 13 and a rodless cavity 23 of each first cylinder body 1 and the corresponding second cylinder body 2, and a first liquid flow hole 102 for communicating the reversing pore channel 103 with the outside of each piston rod is arranged on the side wall of each piston rod 10; the piston 8 is fitted with a conventional composite seal 81.
The reversing valve is provided with a high-pressure concentrated water inlet 31 and a low-pressure concentrated water outlet, the first cylinder body 1 is hermetically arranged at one end of the reversing valve, the second cylinder body 2 is hermetically arranged at the other end of the reversing valve, the piston rod 10 penetrates through the reversing valve, the first liquid flow hole 102 is located in the reversing valve, and the reversing valve is controlled by flowing water in the first liquid flow hole 102 to be reversed so that the piston rod 10 can reciprocate. The reversing valve comprises a valve shell 3 and a concentrated water guide ring 4, a high-pressure concentrated water inlet 31 and a low-pressure concentrated water outlet are arranged on the outer wall of the valve shell 3, a rod sleeve 9 is arranged in the valve shell 3, the rod sleeve 9 is sleeved on a piston rod 10 and is in sliding fit with the piston rod 10, the side walls at two ends of the rod sleeve 9 are respectively provided with a second liquid flow hole 91, the second liquid flow holes 91 are communicated with the inside and the outside of the rod sleeve 9, the second liquid flow holes 91 correspond to the first liquid flow holes 102, the concentrated water guide ring 4 is sleeved on the rod sleeve 9 and is in sliding fit with the rod sleeve, the concentrated water guide ring 4 comprises a first ring piece 41 and a second ring piece 42 positioned in the first ring piece, the middle parts of the first ring piece 41 and the second ring piece 42 are fixedly connected through an annular partition plate 47, the annular partition plate 47 penetrates through the second ring member 42, the inner side of the annular partition plate 47 is slidably sleeved on the rod sleeve 9, a high-pressure concentrated water cavity 36 is formed between the first ring member 41 and the valve casing 3, the high-pressure concentrated water cavity 36 is communicated with the high-pressure concentrated water inlet 31, the two ends of the first ring member 41 are respectively provided with a third liquid flow hole 43, a reversing cavity 46 is formed between the second ring member 42 and the rod sleeve 9, the reversing cavity 46 is communicated with the second liquid flow hole 91, the two ends of the valve casing 3 are provided with end covers 5, the end covers 5 are provided with fourth liquid flow holes 51, the fourth liquid flow holes 51 are communicated with the rod cavity of the first cylinder body 1 or the second cylinder body 2, and when the concentrated water guide ring 4 is located at the right limit position, the third liquid flow hole 43 on the right side of the first ring member 41 is communicated with the fourth liquid flow hole 51 on the right side; when the concentrate guide ring 4 is in the left extreme position, the left third flow opening 43 in the second ring part communicates with the left fourth flow opening 51.
Referring to fig. 1 to 3 and 9, 2 low-pressure concentrated water outlets are arranged on the valve housing 3, the embodiment includes a low-pressure concentrated water outlet 32 and a low-pressure concentrated water outlet 33, the high-pressure concentrated water inlet 31 is located between the 2 low-pressure concentrated water outlets, and two ends of the first ring member 41 are provided with annular flow stopping portions 44, referring to fig. 9, when the concentrated water guide ring 4 is located at the right limit position, the right-side flow stopping portion 44 on the first ring member 41 blocks the right-side low-pressure concentrated water outlet 32, and the left-side low-pressure concentrated water outlet 33 is communicated with the left-side fourth liquid flow hole 51; correspondingly, when the concentrate guide ring 4 is located at the left limit position, the left flow stopping part 44 on the first ring member 41 blocks the left low-pressure concentrate outlet 33, and the right low-pressure concentrate outlet 32 is communicated with the right fourth liquid flow hole 51.
Referring to fig. 1 to 3 and 9, the rod sleeve is further provided with a fifth liquid flow hole 92, the fifth liquid flow hole 92 is located outside the second liquid flow hole 91, in this embodiment, the valve housing 3 is provided with a low-pressure raw water outlet 34 and a low-pressure raw water outlet 35, the fifth liquid flow holes 92 on two sides of the rod sleeve are communicated with the interior of the rod sleeve 9 and the low-pressure raw water outlet 34 and the low-pressure raw water outlet 35, referring to fig. 8 and 9, the outer walls on the left and right sides of the piston rod 10 are both provided with annular first guide grooves 101, when the first liquid flow hole 102 on the piston rod 10 is communicated with the second liquid flow hole 91, the first guide groove 101 on the other side of the piston rod 10 is simultaneously communicated with the second liquid flow hole 91 and the fifth liquid flow hole 92 on the same side, so that the water flow in the side reversing cavity 46 sequentially passes through the second liquid flow hole 91 and the fifth liquid flow hole 92 to be discharged to the outside, thereby reducing the reversing resistance of the concentrate guide ring 4 and reducing energy loss. Two ends of the reversing pore passage 103 are respectively provided with a one-way valve 20 which only enables liquid to flow into the reversing pore passage, and the raw water in the first cylinder body or the second cylinder body drives the concentrated water guide ring to reverse; the low-pressure raw water inlet 11 and the low-pressure raw water inlet 12 of the first cylinder 1 and the second cylinder 2 are provided with one-way valves 20 only allowing liquid to flow in, the high-pressure raw water outlet 12 and the low-pressure raw water inlet 22 of the first cylinder 1 and the second cylinder 2 are provided with one-way valves 20 only allowing liquid to flow out, the one-way valve structure in the embodiment comprises a spherical valve core and a spring, the spring presses the valve core to enable the valve core to block a water inlet of the one-way valve, and the one-way valve is connected when the pressure generated by the water pressure is greater than the set pressure of the spring. Referring to fig. 8 and 9, an annular second guiding groove 104 is formed on an outer wall of the piston rod 10, and the first fluid hole 102 is located in the second guiding groove 104, so as to improve a fault-tolerant rate of the connection between the first fluid hole 102 and the second fluid hole 91, so that the first fluid hole and the second fluid hole are convenient to connect without being aligned intentionally, and the piston rod is convenient to use.
Referring to fig. 3 to 4, 8 and 9, the area between the first ring member 41 and the second ring member 42 is divided into two left and right first cavities 45 by an annular partition plate 47, the two first cavities 45 are communicated with each other through holes 48 on the annular partition plate 47, an annular check ring 53 extends from the end cover 5 toward the inner side of the valve housing 3, the outer side of the annular check ring 53 is in sliding fit with the first ring member 41, the inner side of the annular check ring 53 is in sliding fit with the second ring member 42, when the concentrate guide ring 4 is located at the right limit position, the right annular check ring 53 is located at the left side of the right third flow hole 43, the left annular check ring 53 is located at the left side of the left third flow hole 43, and correspondingly, when the concentrate guide ring 4 is located at the left limit position, the left annular check ring 53 is located at the right side of the left third flow hole 43, and the right annular check ring is located at the right side of the right third flow hole.
Referring to fig. 3, 6 to 8, and 9, a first flow guide ring 7 and a second flow guide ring 6 are disposed on an inner side of the end cover 5, one end of the first flow guide ring 7 contacts the end cover 5, the other end of the first flow guide ring 7 is provided with an outwardly folded portion 71, an outer side of the folded portion 71 contacts a connecting portion 54 between the annular check ring 53 and the end cover 5, a second cavity 74 is formed between the folded portion 71 and the end cover 5, the second cavity 74 is communicated with a fifth flow hole 92, a baffle ring 73 is disposed on an inner side of the first flow guide ring 7, and the baffle ring 73 is located between the second flow hole 91 and the fifth flow hole 92 to separate the second flow hole from the fifth flow hole; one end of the second guide ring 6 is contacted with the end cover 5, the outer side wall of the second guide ring 6 is attached to the valve shell 3, the inner side wall of the second guide ring 6 is attached to a connecting part 54 between the annular retainer ring and the end cover, an annular third guide groove 61 is arranged on the outer side wall of the second guide ring 6, the third guide groove 61 is communicated with the second cavity 74, the third guide grooves 61 on the two sides are respectively communicated with the low-pressure raw water outlet 34 and the low-pressure raw water outlet 35, a guide opening 72 is formed in one end of the first guide ring 7, which is contacted with the end cover 5, and the guide opening 72 is communicated with the fifth liquid flow hole 92 and the second cavity 74; the second guide ring 6 is provided with a radial sixth liquid flow hole 62, the sixth liquid flow hole 62 is located in the third guide groove 61, and the sixth liquid flow hole 62 connects the second cavity 74 with the third guide groove 61. In this embodiment, the second flow guiding ring 6 is provided with a first flow channel 63 arranged axially, the fourth flow hole 51 is communicated with the low-pressure concentrated water outlet or the high-pressure concentrated water inlet 31 through the first flow channel 63, the connecting portion 54 on the inner side of the end cover 5 is provided with a seventh flow hole 52, the sixth flow hole 62 is communicated with the seventh flow hole 52, the fifth flow hole 92 is communicated with the second cavity 74 through the flow guiding port 72, the second cavity 74 is communicated with the third flow guiding groove 61 through the sixth flow hole 62 and the seventh flow hole 52, and the third flow guiding groove 61 is communicated with the low-pressure raw water outlet 34 and the low-pressure raw water outlet 35.
The utility model relates to a working procedure and principle from supercharged energy recovery high-pressure pump do:
1) The low-pressure raw water inlet 11 and the low-pressure raw water inlet 21 of the first cylinder 1 and the second cylinder 2 are connected with a preposed low-pressure raw water supply pump for supplying water; the high-pressure raw water outlet 12 and the high-pressure raw water outlet 22 of the first cylinder 1 and the second cylinder 2 are communicated with the water inlet of the reverse osmosis device; connecting the high-pressure concentrated water inlet 31 with a high-pressure concentrated water outlet of the reverse osmosis device to complete the installation of the system;
2) Starting the system, referring to fig. 3, raw water firstly enters the rodless cavity 23 of the second cylinder 2 from the low-pressure raw water inlet 21, the piston 8 is pushed to move leftwards, and meanwhile, the high-pressure raw water outlet 22 conveys high-pressure raw water outwards to the reverse osmosis device; when the piston rod moves to the left limit position leftwards, the first liquid flow hole 102 is communicated with the left second liquid flow hole 91, at the moment, raw water in the rodless cavity 23 of the second cylinder body 2 sequentially passes through the reversing pore passage 103, the first liquid flow hole 102 and the left second liquid flow hole 91 through the one-way valve to enter the left reversing cavity 46, the concentrated water guide ring 4 is pushed to move rightwards to the right limit position, the state shown in fig. 9 is achieved, at the moment, the high-pressure concentrated water cavity 36 is communicated with the rod cavity 24 of the second rod body through the right third liquid flow hole 43, the right first flow passage 63 and the right fourth liquid flow hole 51, the right flow stopping part 44 blocks the right low-pressure concentrated water outlet 32, high-pressure concentrated water in the high-pressure concentrated water cavity 36 pushes the right piston 8 to move rightwards, the left low-pressure concentrated water outlet 33 is communicated with the rod cavity 14 of the first cylinder body, and low-pressure concentrated water in the rod cavity 14 is discharged through the low-pressure concentrated water outlet 33;
3) After the piston rod reaches a right extreme position by the pushing of high-pressure concentrated water, the first liquid flow hole 102 is communicated with the second liquid flow hole 91 on the right side, at the moment, raw water in the rodless cavity 13 of the first cylinder body 1 sequentially passes through the reversing pore passage 103, the first liquid flow hole 102 on the right side and the second liquid flow hole 91 on the right side to enter the reversing cavity 46 on the right side to push the concentrated water guide ring 4 to move leftwards, and after the concentrated water guide ring 4 moves leftwards to a left extreme position, the high-pressure concentrated water cavity 36 is communicated with the rod cavity 14 of the first rod body through the third liquid flow hole 43 on the left side, the first flow passage 63 on the left side and the fourth liquid flow hole 51 on the left side, the left flow stopping part 44 blocks the low-pressure concentrated water outlet 33 on the left side, high-pressure concentrated water in the high-pressure concentrated water cavity 36 pushes the piston 8 on the left side to move leftwards, the low-pressure concentrated water outlet 32 on the right side is communicated with the rod cavity 24 of the second cylinder body, low-pressure concentrated water in the rod cavity 24 is discharged through the low-pressure concentrated water outlet 32, the concentrated water guide ring completes a cycle reciprocating motion cycle, and the high-pressure of the high-concentrated water guide ring and the piston assembly can utilize the pressure of the reverse osmosis device to recover.
When the piston rod 10 moves to the left limit position, the left first flow hole 102 is communicated with the left second flow hole 91, meanwhile, the right second flow hole 91 is communicated with the right fifth flow hole 92 through the right first guide groove 101, raw water in the right reversing cavity 46 sequentially passes through the right second flow hole 91, the right fifth flow hole 92, the guide opening 72, the second cavity 74, the seventh flow hole 52, the sixth flow hole 62 and the third guide groove 61, and then is discharged through the right low-pressure raw water outlet 34, so that the resistance of the raw water in the right reversing cavity 46 cannot be applied to the thick water guide ring 4 when the piston rod 10 moves to the right limit position, and the same is true when the piston rod 10 moves to the right limit position. When the piston rod 10 moves leftwards or rightwards, the piston rod is pushed by high-pressure concentrated water and raw water in a rodless cavity at the far side of the piston rod, so that energy is further saved.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims (10)
1. A self-pressurizing energy recovery high pressure pump, comprising:
the first cylinder body is provided with a low-pressure raw water inlet and a high-pressure raw water outlet;
the second cylinder body is provided with a low-pressure raw water inlet and a high-pressure raw water outlet;
the piston assembly comprises 2 pistons and a piston rod, the pistons are respectively positioned in the first cylinder body and the second cylinder body, two ends of the piston rod are respectively fixedly connected with the 2 pistons, a reversing pore channel along the axial direction of the piston rod is arranged in the piston rod, two ends of the reversing pore channel are respectively communicated with the rodless cavities of the first cylinder body and the second cylinder body, and a first liquid flow hole for communicating the reversing pore channel with the outside of the piston rod is arranged on the side wall of the piston rod;
the reversing valve is provided with a high-pressure concentrated water inlet and a low-pressure concentrated water outlet, the first cylinder body is hermetically arranged at one end of the reversing valve, the second cylinder body is hermetically arranged at the other end of the reversing valve, the piston rod penetrates through the reversing valve, the first liquid flow hole is positioned in the reversing valve, and the reversing valve is controlled by the flowing water in the first liquid flow hole to be reversed so as to enable the piston rod to reciprocate.
2. The self-pressurizing energy recovery high pressure pump of claim 1, wherein: the reversing valve comprises a valve shell and a concentrated water guide ring, a high-pressure concentrated water inlet and a low-pressure concentrated water outlet are arranged on the outer wall of the valve shell, a rod sleeve is arranged in the valve shell, the rod sleeve is sleeved on a piston rod and is in sliding fit with the piston rod, second liquid flow holes are respectively arranged on the side walls of two ends of the rod sleeve, the second liquid flow holes are communicated with the inside and the outside of the rod sleeve, the second liquid flow holes correspond to the first liquid flow holes in position, the concentrated water guide ring is sleeved on the rod sleeve and is in sliding fit with the rod sleeve, the concentrated water guide ring comprises a first ring piece and a second ring piece positioned in the first ring piece, the middle parts of the first ring piece and the second ring piece are fixedly connected through an annular partition plate, the annular partition plate penetrates through the second ring piece, the inner side of the annular partition plate is slidably sleeved on the rod sleeve, a high-pressure concentrated water cavity is formed between the first ring piece and the valve shell, the high-pressure concentrated water inlet is communicated with the two ends of the first ring piece, a reversing cavity is communicated with the second liquid flow holes, the reversing cavity is communicated with the second liquid flow holes, two ends of the first ring piece, the end cover are provided with end covers, a fourth liquid flow hole is arranged on the right side of the end cover, and is communicated with the right side of the second liquid guide ring hole, and is communicated with the right side of the fourth liquid guide ring hole; when the concentrated water guide ring is located at the left limit position, the left third liquid flow hole and the left fourth liquid flow hole in the second annular component are communicated.
3. The self-pressurizing energy recovery high pressure pump of claim 2, wherein: the number of the low-pressure concentrated water outlets on the valve shell is 2, the high-pressure concentrated water inlet is positioned between the 2 low-pressure concentrated water outlets, the two ends of the first ring piece are provided with annular flow stopping parts, when the concentrated water guide ring is positioned at the right limit position, the flow stopping part on the right side of the first ring piece blocks the low-pressure concentrated water outlet on the right side, and the low-pressure concentrated water outlet on the left side is communicated with the fourth liquid flow hole on the left side; when the concentrated water guide ring is located at the left limit position, the flow stopping part on the left side of the first ring piece blocks the low-pressure concentrated water outlet on the left side, and the low-pressure concentrated water outlet on the right side is communicated with the fourth liquid flow hole on the right side.
4. The self-pressurizing energy recovery high pressure pump of claim 2, wherein: the rod sleeve is further provided with a fifth liquid flow hole, the fifth liquid flow hole is located on the outer side of the second liquid flow hole, a low-pressure raw water outlet is formed in the valve shell, the fifth liquid flow hole is communicated with the inner portion of the rod sleeve and the low-pressure raw water outlet, annular first guide grooves are formed in the outer walls of the left side and the right side of the piston rod, and when the first liquid flow hole in the piston rod is communicated with the second liquid flow hole, the first guide groove in the other side of the piston rod is communicated with the second liquid flow hole and the fifth liquid flow hole in the same side.
5. The self-pressurizing energy recovery high pressure pump of claim 1, wherein: two ends of the reversing pore canal are respectively provided with a one-way valve which only enables liquid to flow into the reversing pore canal; the low-pressure raw water inlets on the first cylinder body and the second cylinder body are provided with one-way valves only allowing liquid to flow in, and the high-pressure raw water outlets on the first cylinder body and the second cylinder body are provided with one-way valves only allowing liquid to flow out.
6. The self-boosting energy recovery high pressure pump of claim 1 wherein: the outer wall of the piston rod is provided with an annular second guide groove, and the first liquid flow hole is positioned in the second guide groove.
7. The self-pressurizing energy recovery high pressure pump of claim 4, wherein: the area between the first ring piece and the second ring piece is divided into a left first cavity and a right first cavity by an annular partition plate, the two first cavities are communicated with each other through holes in the annular partition plate, an annular check ring extends towards the inner side of the valve shell on the end cover, the outer side of the annular check ring is in sliding fit with the first ring piece, the inner side of the annular check ring is in sliding fit with the second ring piece, when the concentrated water diversion ring is located at the right limit position, the annular check ring on the right side is located on the left side of the third liquid flow hole on the right side, the annular check ring on the left side is located on the left side of the third liquid flow hole on the left side, when the concentrated water diversion ring is located at the left limit position, the annular check ring on the left side is located on the right side of the third liquid flow hole on the left side, and the annular check ring on the right side is located on the right side of the third liquid flow hole on the right side.
8. The self-boosting energy recovery high pressure pump of claim 7, wherein: a first flow guide ring and a second flow guide ring are arranged on the inner side of the end cover, one end of the first flow guide ring is in contact with the end cover, the other end of the first flow guide ring is provided with a turnover part which is turned over outwards, the outer side of the turnover part is in contact with a connecting part between the annular retainer ring and the end cover, a second cavity is formed between the turnover part and the end cover, the second cavity is communicated with the fifth liquid flow hole, a flow blocking ring is arranged on the inner side of the first flow guide ring, and the flow blocking ring is positioned between the second liquid flow hole and the fifth liquid flow hole to separate the second liquid flow hole from the fifth liquid flow hole; one end and the end cover contact of second guide ring, the lateral wall and the valve casing laminating of second guide ring, the connecting portion laminating between the inside wall of second guide ring and annular retaining ring and the end cover is equipped with annular third guiding gutter on the lateral wall of second guide ring, third guiding gutter and second cavity switch-on, the raw water delivery port of low pressure is put through to the third guiding gutter.
9. The self-pressurizing energy recovery high pressure pump of claim 8, wherein: a flow guide opening is formed in one end, in contact with the end cover, of the first flow guide ring, and the flow guide opening is communicated with the fifth liquid flow hole and the second cavity; and the second guide ring is provided with a radial sixth liquid flow hole, the sixth liquid flow hole is positioned in the third guide groove, and the sixth liquid flow hole is communicated with the second cavity and the third guide groove.
10. The self-pressurizing energy recovery high pressure pump of claim 9, wherein: the second flow guide ring is provided with a first flow channel which is axially arranged, and the fourth flow hole is communicated with the low-pressure concentrated water outlet or the high-pressure concentrated water inlet through the first flow channel; and a seventh liquid flow hole is formed in the connecting part on the inner side of the end cover, and the sixth liquid flow hole is communicated with the seventh liquid flow hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221951652.XU CN217873234U9 (en) | 2022-07-27 | 2022-07-27 | Self-supercharging energy recovery high-pressure pump |
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| CN202221951652.XU CN217873234U9 (en) | 2022-07-27 | 2022-07-27 | Self-supercharging energy recovery high-pressure pump |
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| CN217873234U true CN217873234U (en) | 2022-11-22 |
| CN217873234U9 CN217873234U9 (en) | 2023-01-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117263320A (en) * | 2023-10-23 | 2023-12-22 | 德州海纳祺环保科技有限公司 | Seawater reverse osmosis purification energy recovery system and energy recovery method |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117263320A (en) * | 2023-10-23 | 2023-12-22 | 德州海纳祺环保科技有限公司 | Seawater reverse osmosis purification energy recovery system and energy recovery method |
| CN117263320B (en) * | 2023-10-23 | 2024-03-05 | 德州海纳祺环保科技有限公司 | Seawater reverse osmosis purification energy recovery system and energy recovery method |
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| Publication number | Publication date |
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| CN217873234U9 (en) | 2023-01-24 |
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| CU01 | Correction of utility model |
Correction item: Denomination of Utility Model Correct: Self-pressurized energy recovery high-pressure pump False: A high pressure pump for self-pressurized energy recovery Number: 47-01 Volume: 38 Correction item: Denomination of Utility Model|Description Correct: Self-pressurized energy recovery high-pressure pump False: A high pressure pump for self-pressurized energy recovery Number: 47-01 Page: ?? Volume: 38 |
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| CU01 | Correction of utility model |