CN105712437B - Pressure energy recovery method based on reciprocating liquid switch - Google Patents
Pressure energy recovery method based on reciprocating liquid switch Download PDFInfo
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- CN105712437B CN105712437B CN201610074456.1A CN201610074456A CN105712437B CN 105712437 B CN105712437 B CN 105712437B CN 201610074456 A CN201610074456 A CN 201610074456A CN 105712437 B CN105712437 B CN 105712437B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Abstract
The present invention relates to liquid pressure energy recovery technology fields, disclose a kind of pressure energy recovery method based on reciprocating liquid switch, include the first switch and the second switch connected by pressure-exchange pipeline group；First switch is identical with the second switch structure, includes cylinder body and inner core, the inner core is assemblied in the cylinder body, and can be moved back and forth between initial position and final position.The present invention switches to recycle the liquid category that adjustment is passed through in pressure-exchange pipeline group by the position of inner core, realize the continuous transmission and recycling of liquid pressure energy, have the advantages that recovery system is simple, compact, the treating capacity of recovery method is in extensive range, it is adaptable, and pressure recovery process is easily controllable, and liquid flowing in addition only occurs in the pipelines such as channel and the pressure-exchange pipeline group of liquid switch inner core arrangement, the pressure loss of liquid is low with blending rate, and pressure energy organic efficiency is high.
Description
Technical field
The present invention relates to liquid pressure energy recovery technology fields more particularly to a kind of based on reciprocating liquid switch
Pressure energy recovery method.
Background technology
In the fields such as Membrane seawater desalination, synthesis ammonia, sewage disposal, it is commonly encountered highly pressurised liquid direct emission phenomenon, this
The process of a little direct emission highly pressurised liquids does not efficiently use the pressure energy of highly pressurised liquid and causes huge waste, such as embrane method reverse osmosis
Operating pressure is between 6~7MPa in saturating desalting process, and detaches the strong brine given off from membrane module after fresh water
Pressure is still up to 5~6.5MPa, and according to statistics, if the pressure energy of strong brine is directly discharged, it is total that caused loss accounts for about production water
The 30~50% of cost, the 75% of operating cost.
And the pressure energy of liquid pressure energy recovery method recoverable highly pressurised liquid, realize that highly pressurised liquid is pressurized low pressure liquid
The energy regenerating of body.The liquid pressure energy recovery method of early stage increases by high pressure liquid drives water conservancy turbine, then by water conservancy turbine
Force down press liquid, though such recovery method can recovery section pressure energy, due to there are the conversions of energy in removal process therefore
Organic efficiency is not high.Relatively advanced liquid pressure energy recovery method is then the Incoercibility using liquid, by corresponding
Equipment realizes that highly pressurised liquid is in direct contact with low pressure liquid, completes the transfer of liquid pressure energy, although such recovery method recycles
Efficiency is up to 90% or more, but the requirement to retracting device is excessively high, and recovery system is complicated, and control difficulty is big.
Invention content
The technical problem to be solved by the present invention is to overcome deficiency in the prior art, provide a kind of based on reciprocating motion liquid
The pressure energy recovery method of body switch, this method simple system, removal process is easily controllable, strong applicability, and organic efficiency is high.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is as follows：
A kind of pressure energy recovery method based on reciprocating liquid switch includes being connected by pressure-exchange pipeline group
First switch and the second switch；First switch and the second switch structure are identical, include cylinder body and inner core, institute
It states inner core to be assemblied in the cylinder body, and can move back and forth between initial position and final position；
The agent structure of the cylinder body is a cuboid cavity, and the cuboid cavity is relatively set with cuboid cavity the
One side and cuboid cavity second side are provided with highly pressurised liquid pipe and low pressure liquid in the cuboid cavity first side
It manages, the first connecting tube and the second connecting tube, the highly pressurised liquid pipe, low pressure liquid is provided in the cuboid cavity second side
The internal diameter of the pipeline of body pipe, the first connecting tube and the second connecting tube is equal, the highly pressurised liquid pipe and low pressure liquid pipe and cuboid
The connectivity part of cavity first side is two circles, first connecting tube and the second connecting tube and the cuboid cavity the second side
The connectivity part in face is justified for other two, and described four round circle center line connectings form the first quadrilateral space, with cuboid sky
Chamber first side is perspective plane, and first quadrilateral space is projected as rectangle on the perspective plane, the four of the rectangle
Side corresponds to parallel respectively with each side of cuboid cavity first side；
The cuboid cavity is also relatively set with cuboid cavity first end face and cuboid cavity second end face, described
Cuboid cavity first end face and cuboid cavity second end face respectively with cuboid cavity first side and cuboid cavity
Two side faces are disposed adjacent, and the center of the cuboid cavity first end face is equipped with drive shaft hole, the cuboid cavity second end
Face closure；
The agent structure of the inner core is a solid rectangles, and the solid rectangles include positioned opposite to each other solid
Cuboid first end face and solid rectangles second end face and solid rectangles first side positioned opposite to each other and solid
Cuboid second side；
Using the direction both perpendicular to cuboid cavity first end face, cuboid cavity second end face as cuboid cavity
Axis direction, using the direction both perpendicular to solid rectangles first end face, solid rectangles second end face as solid length
The axis direction of cube, the solid rectangular physical efficiency are assemblied in the cuboid cavity, and can be along the cuboid cavity
Axis direction moves back and forth, so that inner core switches between initial position and final position, the axis of the solid rectangles
Line direction length is less than the axis direction length of the cuboid cavity, and the difference of the two is that the inner core is back and forth transported in cylinder body
Dynamic stroke, the stroke are more than in the pipeline of the highly pressurised liquid pipe, low pressure liquid pipe, the first connecting tube and the second connecting tube
Diameter；Include through first passage, second channel, third channel and the four-way for being arranged and being isolated from each other in the solid rectangular body
Road, the first passage, second channel, third channel and fourth lane both ends be respectively communicated with the first side of the solid rectangles
Face and solid rectangles second side, and the port shape at four channels both ends is circle, each is described circular
Diameter and the internal diameter of the pipeline of highly pressurised liquid pipe, low pressure liquid pipe, the first connecting tube and the second connecting tube are equal；
The line in four centers of circle of the port at the first passage and second channel both ends can constitute second space quadrangle,
The line in four centers of circle of the port at the third channel and fourth lane both ends can constitute third quadrilateral space, and described second
The size of quadrilateral space and third quadrilateral space and the first quadrilateral space all same, the inner core is in cuboid sky
When intracavitary moves reciprocatingly in the axial direction, first quadrilateral space can be in the position overlapped with the second space quadrangle
It sets and switches between the position that is overlapped with third quadrilateral space；
The first passage, second channel, third channel and fourth lane including two sections of horizontal channels and are set to institute
State one section of ramp way between two sections of horizontal channels, the pipe centerline of the first passage and second channel is in solid rectangular
The pipe centerline of the line segment for being projected as two intersections of body first side, the third channel and fourth lane is in solid rectangular
Two parallel line segments are projected as in the first side of body, and on the side adjacent with the solid rectangles first side
Projection overlap, the center line of the ramp way in four channels is on the side adjacent with solid rectangles first side
Projection is respectively three parallel line segments, and three parallel line segments are parallel with the axis direction of solid rectangles；
When the inner core is in initial position, the both ends of the first passage respectively with highly pressurised liquid pipe and the second connecting tube
Connection, the both ends of the second channel are connected to low pressure liquid pipe and the first connecting tube respectively；
When the inner core is in final position, the both ends of the third channel respectively with low pressure liquid pipe and the second connecting tube
Connection, the both ends of the fourth lane are connected to highly pressurised liquid pipe and the first connecting tube respectively；
Solid rectangles first end face center is fixed with drive shaft, and the drive shaft is connected with drive by drive shaft hole
Dynamic device, the driving device, which is used to move reciprocatingly in cylinder body for inner core, provides power；
The pressure-exchange pipeline group includes that first pressure exchanges pipeline and second pressure exchange pipeline, the first pressure
The one end for exchanging pipeline is connected to the first connecting tube of the first liquid switch, and the other end connects with the second of second liquid switch
Take over connection；One end that the second pressure exchanges pipeline is connected to the second connecting tube of the first liquid switch, the other end and
First connecting tube of second liquid switch connects；
The pressure energy recovery method based on reciprocating liquid switch specifically comprises the following steps：
S1, the inner core of first switch is set to initial position, the inner core of the second switch is set as stop bit
It sets；
S2, the high pressure recovered liquid with pressure energy is passed through the first switch from the highly pressurised liquid pipe, then passes through institute
First passage is stated into the second connection pore, pipeline is exchanged subsequently into second pressure, then passes through second switch
First connecting tube enters the fourth lane of the second switch, finally from the second switching of the highly pressurised liquid pipe of the second switch outflow
Device；
Simultaneously, it would be desirable to which the low pressure liquid of pressurization is passed through the first switch from the low pressure liquid pipe, then passes through described
Two channels enter first connecting tube, exchange pipeline subsequently into first pressure, then pass through the of second switch
Two connecting tubes enter the third channel of the second switch, finally from the second switching of the low pressure liquid pipe of second switch outflow
Device；
The inner core of S3, the synchronous inner core for driving first switch and the second switch complete the reciprocal fortune of a stroke
Dynamic, the inner core of first switch be in final position at this time, quiet after the inner core of the second switch is in initial position simultaneously
Only；
S4, the high pressure recovered liquid with pressure energy is passed through the first switch by highly pressurised liquid pipe, then passed through
The fourth lane enters first connecting tube, and pipeline, the high pressure with pressure energy are exchanged subsequently into first pressure
First pressure described in step S2 is exchanged the low-pressure hydraulic that the needs being full of in pipeline pressurize and contracted by recovered liquid, makes described first
The low pressure liquid supercharging that the needs being full of in pressure-exchange pipeline pressurize；
Meanwhile needing the low pressure liquid to pressurize to be passed through the first switch by low pressure liquid pipe by described, then pass through described
Third channel exchanges pipeline, the low pressure liquid for needing to pressurize will be walked into second connecting tube subsequently into second pressure
Second pressure described in rapid S2 exchanges the low-pressure hydraulic contracting after the high pressure recovered liquid pressure release with pressure energy being full of in pipeline
Displacement, so that the low pressure liquid after the high pressure recovered liquid pressure release with pressure energy constantly leaves the second switch；
S5, second connecting tube for needing the highly pressurised liquid formed after the low pressure liquid to pressurize pressurization to pass through the second switch
Into the first passage of the second switch, then the second switch is flowed out from the highly pressurised liquid pipe of second switch；
Low pressure liquid after the high pressure recovered liquid pressure release with pressure energy described in displacement passes through the first of the second switch
Connecting tube enters the second channel of the second switch, then from the second switching of the low pressure liquid pipe of second switch outflow
Device；
The inner core of S6, the synchronous inner core for driving first switch and the second switch complete the reciprocal fortune of a stroke
Dynamic, the inner core of first switch returns to initial position at this time, static after the inner core of the second switch returns to final position；
S7, step S2~S6 is repeated, until compression finishes；
When S8, compression finish, it is simultaneously stopped the reciprocating motion of the first switch inner core and the second switch inner core, clearly
Empty first switch and the second switch, close the liquid pressure energy retracting device.
Further, the length of the rectangle four edges be all higher than highly pressurised liquid pipe, low pressure liquid pipe, the first connecting tube and
The internal diameter of the pipeline of second connecting tube.
Further, the cuboid cavity and the solid rectangles are homogeneous along each size perpendicular to axis direction
Together.
Further, the solid rectangles first end face, solid rectangles second end face, solid rectangles first side
It is empty with the cuboid cavity first end face, cuboid cavity second end face, cuboid respectively with solid rectangles second side
Chamber first side and cuboid cavity second side are correspondingly arranged.
Compared with prior art, the invention has the advantages that：
Pressure energy recovery method provided by the invention based on reciprocating liquid switch, including by pressure-exchange pipeline
The first switch and the second switch of group connection, the first switch and the second switch structure are identical, and inner core is assemblied in cylinder
In vivo, it and can move back and forth between initial position and final position, and then be adjusted into liquid in pressure-exchange pipeline group
The type of body has recovery system to realize the continuous transmission and recycling of liquid pressure energy using the Incoercibility of liquid
Simply, compact advantage, since removal process does not need piston, pressure recovery process is easily controllable, the treating capacity of recovery method
In extensive range, adaptable, liquid flowing in addition only occurs in channel and the pressure-exchange pipeline of liquid switch inner core arrangement
In the pipelines such as group, the pressure loss of liquid is low with blending rate, and pressure energy organic efficiency is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of liquid switch in the present invention；
Fig. 2 is the structural schematic diagram of cylinder body in the present invention；
Fig. 3 is the side view of cylinder body in the present invention；
Fig. 4 is the structural schematic diagram of inner core in the present invention；
Fig. 5 is the front view of inner core in the present invention；
Fig. 6 is the side view of inner core in the present invention；
Fig. 7 is fundamental diagram (the first liquid switching of the pressure energy recovery method based on reciprocating liquid switch
Inner core is in initial position in device)；
Fig. 8 is fundamental diagram (the first liquid switching of the pressure energy recovery method based on reciprocating liquid switch
Inner core is in final position in device).
In figure：1：Cuboid cavity；2：Cuboid cavity first side；3：Cuboid cavity second side；4：High pressure liquid
Body pipe；5：Low pressure liquid pipe；6：First connecting tube；7：Second connecting tube；8：Cuboid cavity first end face；9：Cuboid cavity
Second end face；10：Drive shaft hole；11：Solid rectangles；12：Solid rectangles first end face；13：Solid rectangles second end
Face；14：Solid rectangles first side 15：Solid rectangles second side；16：First passage；17：Second channel；18：Third
Channel；19：Fourth lane；20：Drive shaft；；21：First pressure exchanges pipeline；22：Second pressure exchanges pipeline；23：High-pressure thick
Brine；24：Low pressure seawater；25：High pressure sea water；26：Low pressure strong brine；4’：The highly pressurised liquid pipe of second liquid switch；5’：
The low pressure liquid pipe of second liquid switch；6’：First connecting tube of second liquid switch；7’：Second liquid switch
Second connecting tube；16’：The first passage of second liquid switch；17’：The second channel of second liquid switch；18’：Second
The third channel of liquid switch；19’：The fourth lane of second liquid switch.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term "upper", "lower", "inner", "outside", "top", "bottom", " left side ",
The orientation or positional relationship of instructions such as " right sides " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this hair
Bright and simplified description, does not indicate or imply the indicated device or element must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third ", " the 4th "
It is used for description purposes only, is not understood to indicate or imply relative importance.
A kind of pressure energy recovery method based on reciprocating liquid switch provided in this embodiment, including handed over by pressure
The first switch and the second switch of the connection of pipeline group are changed, the first switch and the second switch structure are identical, such as Fig. 1 institutes
Show, switch includes cylinder body and inner core, and inner core is assemblied in cylinder body, and can be carried out between initial position and final position reciprocal
Movement is switched to recycle the liquid category that adjustment is passed through in pressure exchanger tube group by the position of inner core, to utilize liquid
Incoercibility realizes the transmission and recycling of liquid pressure energy.
As shown in Figure 2 and Figure 3, the agent structure of cylinder body is a cuboid cavity 1, and cuboid cavity 1 is relatively set with rectangular
Body cavity first side 2 and cuboid cavity second side 3 are provided with 4 He of highly pressurised liquid pipe in cuboid cavity first side 2
Low pressure liquid pipe 5 is provided with the first connecting tube 6 and the second connecting tube 7 in cuboid cavity second side 3, in order to ensure to flow through
The stability of flow of the variety classes liquid of switch, preferably highly pressurised liquid pipe 4, low pressure liquid pipe 5, the first connecting tube 6 and second
The internal diameter of the pipeline of connecting tube 7 is equal.Highly pressurised liquid pipe 4 and low pressure liquid pipe 5 and the connectivity part of cuboid cavity first side 2 are
Two circles, the two circles respectively the first circle and the second circle, the first connecting tube 6 and the second connecting tube 7 and cuboid cavity second
The connectivity part of side 3 is other two circle, the two circles are respectively third circle and the 4th circle, and four round circle center line connectings form the
One quadrilateral space, is perspective plane with cuboid cavity first side 2, and projection of first quadrilateral space on the perspective plane is equal
For a rectangle, the four edges of rectangle correspond to parallel respectively with four sides of cuboid cavity first side 2.
What cuboid cavity 1 was also oppositely arranged has cuboid cavity first end face 8 and cuboid cavity second end face 9, long
Cube cavity first end face 8 and cuboid cavity second end face 9 respectively with cuboid cavity first side 2 and cuboid cavity
Two side faces 3 are disposed adjacent, and the center of cuboid cavity first end face 8 is equipped with drive shaft hole 10,9 envelope of cuboid cavity second end face
It closes.
As shown in figure 4, the agent structure of inner core is a solid rectangles 11, solid rectangles 11 include positioned opposite to each other
Solid rectangles first end face 12 and solid rectangles second end face 13 and solid rectangles first positioned opposite to each other
Side 14 and solid rectangles second side 15.
It is empty using the direction both perpendicular to cuboid cavity first end face 8, cuboid cavity second end face 9 as cuboid
The axis direction of chamber 1, using the direction both perpendicular to solid rectangles first end face 12, solid rectangles second end face 13 as
The axis direction of solid rectangles 11, solid rectangles 11 can be assemblied in cuboid cavity 1, and can be along cuboid cavity 1
Axis direction moves back and forth, so that inner core switches between initial position and final position, the axis of solid rectangles 11
Direction length is less than the axis direction length of cuboid cavity 1, and the difference of the two is the stroke that inner core moves back and forth in cylinder body.
In order to ensure that liquid leakage will not occur in switch inner core reciprocatory movement, inner core moves back and forth in cylinder body
Stroke be more than highly pressurised liquid pipe 4, low pressure liquid pipe 5, the first connecting tube 6 and the second connecting tube 7 internal diameter of the pipeline；Such as Fig. 5, figure
Include through first passage 16, second channel 17, the third channel 18 for being arranged and being isolated from each other shown in 6, in solid rectangles 11
With fourth lane 19, first passage 16, second channel 17, third channel 18 and fourth lane 19 both ends be respectively communicated with solid length
Cube first side 14 and solid rectangles second side 15, and the port shape at four channels both ends is circle, each
Circular diameter and the internal diameter of the pipeline of highly pressurised liquid pipe 4, low pressure liquid pipe 5, the first connecting tube 6 and the second connecting tube 7 are equal,
Circulation area is constant when ensuring that liquid enters into and through switch, reduces the pressure loss of the liquid by pressure energy retracting device
Improve pressure energy organic efficiency..
The line in four centers of circle of 17 both ends port of first passage 16 and second channel can constitute second space quadrangle, the
The line in four centers of circle of 19 both ends port of triple channel 18 and fourth lane can constitute third quadrilateral space.
In order to ensure that four channels can realize accurate switching to liquid by moving back and forth, reach good switching with it is close
Effect is sealed, the size and the first quadrilateral space all same of second space quadrangle and third quadrilateral space, inner core is rectangular
When moving reciprocatingly in the axial direction in body cavity 1, the first quadrilateral space can be in the position overlapped with second space quadrangle
Switch between the position overlapped with third quadrilateral space.
First passage 16, second channel 17, third channel 18 and fourth lane 19 include two sections of horizontal channels and setting
One section of ramp way between two sections of horizontal channels, as shown in Figure 4, Figure 5 and Figure 6, ramp way is with horizontal channel at certain
The pipe centerline of angle, first passage 16 and second channel 17 is projected as two friendships in solid rectangles first side 14
The pipe centerline of the line segment of fork, third channel 18 and fourth lane 19 is projected as in the first side 14 of solid rectangles
Two parallel line segments, and the projection on the side adjacent with solid rectangles first side 14 overlaps, four channels are inclined
Projection of the center line of access ramp on the side adjacent with solid rectangles first side 14 is respectively three parallel line segments,
And three parallel line segments are parallel with the axis of solid rectangles 11, it is ensured that four pipelines are evenly arranged in inner core, both may be used
It realizes the switching of the variety classes liquid to entering switch, and can guarantee that four channels are mutually isolated, it is compact-sized.
When inner core is in initial position, solid rectangles second end face 13 is contacted with cuboid cavity second end face 9, and first
Quadrilateral space is overlapped with second space quadrangle, and the both ends of first passage 16 pass through the first circle and the 4th circle and height respectively at this time
Press liquid pipe 4 is connected to the second connecting tube 7, and the both ends of second channel 17 pass through the second circle and third circle and low pressure liquid pipe respectively
5 are connected to the first connecting tube 6, in order to switch outside pipeline and switch in channel between close communication, and then ensure
When liquid enters switch and outflow switch, liquid leakage will not occur；When inner core is in final position, solid rectangles
End face 12 is contacted with cuboid cavity first end face 8, and the first quadrilateral space is overlapped with third quadrilateral space, at this time third
The both ends in channel 18 are connected to by the second circle and the 4th circle with low pressure liquid pipe 5 and the second connecting tube 7 respectively, fourth lane 19
Both ends are justified by the first circle and third respectively to be connected to highly pressurised liquid pipe 4 and the first connecting tube 6, in order to switch outside pipeline
The close communication between the channel in switch, so ensure liquid enter switch and outflow switch when, liquid will not occur
Body leaks.
12 center of solid rectangles first end face is fixed with drive shaft 20, and drive shaft 20 is connected with drive by drive shaft hole 10
Dynamic device, driving device, which is used to move reciprocatingly in cylinder body for inner core, provides power.
Pressure-exchange pipeline group includes that first pressure exchanges pipeline 21 and second pressure exchange pipeline 22, in order to ensure first
The reliable connected of switch and the second switch, one end that first pressure exchanges pipeline 21 are connected to the first connecting tube 6, the other end
It is connect with the second connecting tube 7 ' of second liquid switch；One end that second pressure exchanges pipeline 22 is connected to the second connecting tube 7,
The other end is connect with the first connecting tube 6 ' of second liquid switch, when the first switch and the second switch are connected and are worked,
Inner core in first switch and the second switch differs a stroke always, when the first switch inner core be in it is initial (or eventually
Only) when position, the inner core of the second switch, which is then in, terminates (or initial) position, the first liquid switch and second liquid switching
The inner core synchronism switching of device adjusts the frequency of liquid switch switching initial position and final position, ensures without pressure-exchange
Liquid do not flow out second liquid switch.
In order to ensure that there are enough between highly pressurised liquid pipe 4, low pressure liquid pipe 5, the first connecting tube 6 and the second connecting tube 7
Installation implement space, make height press liquid do not occur when flowing through switch leakage and blending, the first quadrilateral space is in length
The length of the four edges of the rectangle projected in cube cavity first side 2 be all higher than highly pressurised liquid pipe 4, low pressure liquid pipe 5,
The internal diameter of the pipeline of first connecting tube 6 and the second connecting tube 7.
In order to ensure inner core in cylinder body in the axial direction stablize move reciprocatingly, avoid liquid between inner core and cylinder body
Leakage, it is preferred that cuboid cavity 1 is with solid rectangles 11 along each size all same perpendicular to axis direction.
Solid rectangles first end face 12, solid rectangles second end face 13, solid rectangles first side 14 and solid
Cuboid second side 15 respectively with cuboid cavity first end face 8, cuboid cavity second end face 9, cuboid cavity first
Side 2 and cuboid cavity second side 3 are correspondingly arranged, and inner core is assembled in cylinder body, solid rectangles first side 14 and length
Cube cavity first side 2 is close, and solid rectangles second side 15 and cuboid cavity second side 3 are close, solid rectangular
Body first end face 12 and cuboid cavity first end face 8 are close, solid rectangles second end face 13 and cuboid cavity second end
Face 9 is close.
The highly pressurised liquid pipe 4 of first switch flows into the high pressure recovered liquid with pressure energy, and low pressure liquid pipe 5, which flows into, to be needed
The low pressure liquid of pressurization；What the highly pressurised liquid pipe 4 ' of the second switch flowed out is the highly pressurised liquid of the formation after the pressurization of low pressure liquid, low
What press liquid pipe 5 ' flowed out is the low pressure liquid having after the high pressure recovered liquid pressure release of pressure energy, by switching just to liquid switch
Beginning position and final position frequency adjusting so that the liquid Jing Guo pressure-exchange does not flow out the second switch.
The present embodiment is applied to illustrate the pressure based on reciprocating liquid switch for reverse osmosis seawater desalination system
The course of work of energy retracting device.Wherein, the high pressure recovered liquid with pressure energy is high-pressure thick salt 23, needs the low pressure pressurizeed
Liquid is low pressure seawater 24, and the highly pressurised liquid of the formation after the pressurization of low pressure liquid is high pressure sea water 25, and the high pressure with pressure energy recycles
Low pressure liquid after liquid pressure release is low pressure strong brine 26.
As shown in fig. 7, the inner core of the first liquid switch is in initial position, the inner core of second liquid switch is in eventually
Stop bit is set, and high-pressure thick salt 23 enters from highly pressurised liquid pipe 4 in the first liquid switch at this time, and is entered by first passage 16
Then second connecting tube 7 exchanges pipeline 22 by second pressure and enters the first connecting tube 6 ' of second liquid switch, then passes through
The fourth lane 19 ' of second liquid switch flows out second liquid switch from the highly pressurised liquid pipe 4 ' of second liquid switch；
Meanwhile low pressure seawater 24 enters from low pressure liquid pipe 5 in the first liquid switch, and the first connection is entered by second channel 17
Then pipe 6 exchanges pipeline 21 by first pressure and enters the second connecting tube 7 ' of second liquid switch, then passes through second liquid
The third channel 18 ' of switch flows out second liquid switch from the low pressure liquid pipe 5 ' of second liquid switch.
Start driving device under above-mentioned working condition, and the inner core for respectively driving two liquid switch completes a row
After the reciprocating motion of journey, inner core is in final position in the first liquid switch at this time, and inner core is in second liquid switch
Initial position, operation principle at this time is as shown in figure 8, high-pressure thick salt 23 enters the first liquid by highly pressurised liquid pipe 4 at this time
Switch, and first pressure is entered by fourth lane 19 and the first connecting tube 6 and exchanges pipeline 21, due to passing through a upper work
Make first pressure after process and exchange in the runner of pipeline 21 to be full of low pressure seawater 24, using the Incoercibility principle of liquid, into
Enter first pressure and exchange the high-pressure thick salt 23 of pipeline 21 to compress the low pressure seawater 24 that a course of work leaves and make its supercharging,
Become high-pressure undersea from high-pressure thick salt 23 to the transmission of low pressure seawater 24, low pressure seawater 24 after supercharged to realize pressure energy
Water 25, and enter by the second connecting tube 7 ' of second liquid switch the first passage 16 ' of second liquid switch, then from the
The highly pressurised liquid pipe 4 ' of two liquid switch flows out second liquid switch.Meanwhile low pressure seawater 24 by low pressure liquid pipe 5 into
Enter the first liquid switch, entering second pressure by third channel 18 and the second connecting tube 7 exchanges pipeline 22, due to passing through
It is full of low pressure strong brine 26 in the runner of second pressure exchange pipeline 22 after a upper course of work, low pressure strong brine 26 is by upper one
Pressure energy is passed to low pressure seawater 24 and is transformed by course of work mesohigh strong brine 23, former using the Incoercibility of liquid
Reason, the low pressure seawater 24 that pipeline 22 is exchanged into second pressure compress the low pressure strong brine 26 that a upper course of work leaves and make it
Second liquid switch constantly is left, to realize the process of 24 displacement low pressure strong brine 26 of low pressure seawater, by the low of displacement
Strong brine 26 is pressed to enter the second channel 17 ' of second liquid switch by the first connecting tube 6 ' of second liquid switch, then
Second liquid switch is flowed out from the low pressure liquid pipe 5 ' of second liquid switch.
After completing the above-mentioned course of work, the inner core in the first liquid switch and second liquid switch is in driving device
The lower reciprocating motion for respectively completing a stroke of effect, returns to the working condition of Fig. 7, completes next course of work, two liquid
Body switch cycle alternation completes the above-mentioned two course of work, you can realizes recycling high-pressure thick salt pressure energy to be pressurized low pressure sea
The energy recovery function of water.The liquid of above-mentioned each process has just been full of the first corresponding liquid switch and second liquid switches
The inner core position of synchronous adjustment the first liquid switch and second liquid switch when pressure-exchange pipeline group between device.
When the liquid compression in the pressure energy retracting device finishes, it is simultaneously stopped the first switch inner core and the second switching
The reciprocating motion of device inner core empties the first switch and the second switch, closes the liquid pressure energy retracting device.
In conclusion the past pressure energy recovery method based on reciprocating liquid switch provided in this embodiment, utilizes
The Incoercibility of liquid realizes the continuous transmission and recycling of liquid pressure energy, have recovery system simply, be compact, easy to control
System, adaptable advantage；Meanwhile, it is capable to effectively reduce the pressure loss and the blending of liquid, pressure energy organic efficiency is improved.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of pressure energy recovery method based on reciprocating liquid switch, which is characterized in that including by pressure exchanger tube
The first switch and the second switch of road group connection；
First switch and the second switch structure are identical, include cylinder body and inner core, and the inner core is assemblied in the cylinder
In vivo, it and can move back and forth between initial position and final position；
The agent structure of the cylinder body is a cuboid cavity (1), and the cuboid cavity (1) is relatively set with cuboid cavity
First side (2) and cuboid cavity second side (3) are provided with highly pressurised liquid on the cuboid cavity first side (2)
(4) and low pressure liquid pipe (5) are managed, the first connecting tube (6) and the second connection are provided on the cuboid cavity second side (3)
Manage (7), the highly pressurised liquid pipe (4), low pressure liquid pipe (5), the first connecting tube (6) and the second connecting tube (7) internal diameter of the pipeline
Equal, the highly pressurised liquid pipe (4) and the connectivity part of low pressure liquid pipe (5) and cuboid cavity first side (2) are two circles,
First connecting tube (6) and the second connecting tube (7) and the connectivity part of the cuboid cavity second side (3) are other two
The circle center line connecting of circle, four circles forms the first quadrilateral space, is projection with the cuboid cavity first side (2)
Face, first quadrilateral space are projected as rectangle, four edges and the cuboid cavity of the rectangle on the perspective plane
Each side of first side (2) corresponds to parallel respectively；
The cuboid cavity (1) is also relatively set with cuboid cavity first end face (8) and cuboid cavity second end face
(9), the cuboid cavity first end face (8) and cuboid cavity second end face (9) respectively with cuboid cavity first side
(2) it is disposed adjacent with cuboid cavity second side (3), the center of the cuboid cavity first end face (8) is equipped with drive shaft
Hole (10), cuboid cavity second end face (9) closing；
The agent structure of the inner core is a solid rectangles (11), and the solid rectangles (11) include positioned opposite to each other
Solid rectangles first end face (12) and solid rectangles second end face (13) and solid rectangles positioned opposite to each other
One side (14) and solid rectangles second side (15)；
It is empty using the direction both perpendicular to cuboid cavity first end face (8), cuboid cavity second end face (9) as cuboid
The axis direction of chamber (1), with the side both perpendicular to solid rectangles first end face (12), solid rectangles second end face (13)
To the axis direction as solid rectangles (11), the solid rectangles (11) can be assemblied in the cuboid cavity (1),
And can move back and forth along the axis direction of the cuboid cavity (1) so that inner core initial position and final position it
Between switch, the axis direction length of the solid rectangles (11) is less than the axis direction length of the cuboid cavity (1), and
The difference of the two is the stroke that the inner core moves back and forth in cylinder body, and the stroke is more than the highly pressurised liquid pipe (4), low pressure liquid
The internal diameter of the pipeline of body pipe (5), the first connecting tube (6) and the second connecting tube (7)；
Include in the solid rectangles (11) through setting and be isolated from each other first passage (16), second channel (17), the
Triple channel (18) and fourth lane (19), the first passage (16), second channel (17), third channel (18) and fourth lane
(19) both ends are respectively communicated with the solid rectangles first side (14) and solid rectangles second side (15), and described four
The port shape at a channel both ends is circle, each described circular diameter and highly pressurised liquid pipe (4), low pressure liquid pipe
(5), the internal diameter of the pipeline of the first connecting tube (6) and the second connecting tube (7) is equal；
The line in four centers of circle of the port at the first passage (16) and second channel (17) both ends can constitute second space four
The line in four centers of circle of the port at side shape, the third channel (18) and fourth lane (19) both ends can constitute third space four
The size of side shape, the second space quadrangle and third quadrilateral space and the first quadrilateral space all same, it is described
When inner core is moved reciprocatingly in the axial direction in the cuboid cavity (1), first quadrilateral space can be with described second
Switch between the position that quadrilateral space overlaps and the position overlapped with third quadrilateral space；
The first passage (16), second channel (17), third channel (18) and fourth lane (19) include that two sections of levels are logical
Road and one section of ramp way being set between two sections of horizontal channels, the first passage (16) and second channel (17)
Pipe centerline in solid rectangles first side (14) be projected as two intersection line segments, the third channel (18) and
The pipe centerline of fourth lane (19) is projected as two parallel line segments in the first side (14) of solid rectangles, and
Projection on the side adjacent with the solid rectangles first side (14) overlaps, the ramp way in four channels
Projection of the center line on the side adjacent with solid rectangles first side (14) is respectively three parallel line segments, and described
Three parallel line segments are parallel with the axis direction of solid rectangles (11)；
When the inner core is in initial position, the both ends of the first passage (16) connect with highly pressurised liquid pipe (4) and second respectively
(7) connection is taken over, the both ends of the second channel (17) are connected to low pressure liquid pipe (5) and the first connecting tube (6) respectively；
When the inner core is in final position, the both ends of the third channel (18) connect with low pressure liquid pipe (5) and second respectively
(7) connection is taken over, the both ends of the fourth lane (19) are connected to highly pressurised liquid pipe (4) and the first connecting tube (6) respectively；
Solid rectangles first end face (12) center is fixed with drive shaft (20), and the drive shaft (20) passes through drive shaft hole
(10) it is connected with driving device, the driving device, which is used to move reciprocatingly in cylinder body for inner core, provides power；
The pressure-exchange pipeline group include first pressure exchange pipeline (21) and second pressure exchange pipeline (22), described first
One end of pressure-exchange pipeline (21) is connected to the first connecting tube (6) of the first liquid switch, and the other end is cut with second liquid
Second connecting tube (7 ') of parallel operation connects；The second pressure exchanges one end and the second of the first liquid switch of pipeline (22)
Connecting tube (7) is connected to, and the other end is connect with the first connecting tube (6 ') of second liquid switch；
The pressure energy recovery method based on reciprocating liquid switch specifically comprises the following steps：
S1, the inner core of first switch is set to initial position, the inner core of the second switch is set as final position；
S2, the high pressure recovered liquid with pressure energy is passed through the first switch from the highly pressurised liquid pipe (4), then passed through described
First passage (16) enters the second connection pore (7), exchanges pipeline (22) subsequently into second pressure, then passes through described second
First connecting tube (6 ') of switch enters the fourth lane (19 ') of the second switch, finally from the high pressure liquid of the second switch
Body pipe (4 ') flows out the second switch；
Simultaneously, it would be desirable to which the low pressure liquid of pressurization is passed through the first switch from the low pressure liquid pipe (5), then passes through described second
Channel (17) enters first connecting tube (6), exchanges pipeline (21) subsequently into first pressure, is then cut by described second
Second connecting tube (7 ') of parallel operation enters the third channel (18 ') of the second switch, finally from the low pressure of second switch
Liquid line (5 ') flows out the second switch；
The inner core of S3, the synchronous inner core for driving first switch and the second switch complete the reciprocating motion of a stroke,
The inner core of first switch is in final position at this time, and the inner core of the second switch is static simultaneously after initial position；
S4, the high pressure recovered liquid with pressure energy is passed through the first switch by highly pressurised liquid pipe (4), then passes through institute
It states fourth lane (19) and enters first connecting tube (6), pipeline (21) is exchanged subsequently into first pressure, it is described that there is pressure
First pressure described in step S2 is exchanged the low-pressure hydraulic that the needs being full of in pipeline (21) pressurize by the high pressure recovered liquid of energy
Contracting makes the first pressure exchange the low pressure liquid supercharging that the needs being full of in pipeline (21) pressurize；
Meanwhile needing the low pressure liquid that pressurizes to be passed through the first switch by low pressure liquid pipe (5) by described, then pass through described the
Triple channel (18) enters second connecting tube (7), exchanges pipeline (22) subsequently into second pressure, the needs pressurize low
After second pressure described in step S2 is exchanged the high pressure recovered liquid pressure release with pressure energy being full of in pipeline (22) by hydraulic fluid
Low-pressure hydraulic contracting displacement so that the low pressure liquid after the high pressure recovered liquid pressure release with pressure energy constantly leaves the second switching
Device；
S5, second connecting tube (7 ') for needing the highly pressurised liquid formed after the low pressure liquid to pressurize pressurization to pass through the second switch
Into the first passage (16 ') of the second switch, then cut from the highly pressurised liquid pipe (4 ') of second switch outflow second
Parallel operation；
The first connection that low pressure liquid after the high pressure recovered liquid pressure release with pressure energy described in displacement passes through the second switch
The second channel (17 ') that (6 ') enter the second switch is managed, is then flowed out from the low pressure liquid pipe (5 ') of second switch
Second switch；
The inner core of S6, the synchronous inner core for driving first switch and the second switch complete the reciprocating motion of a stroke,
The inner core of first switch returns to initial position at this time, static after the inner core of the second switch returns to final position；
S7, step S2~S6 is repeated, until compression finishes；
When S8, compression finish, it is simultaneously stopped the reciprocating motion of the first switch inner core and the second switch inner core, empties institute
The first switch and the second switch are stated, the liquid pressure energy retracting device is closed.
2. the pressure energy recovery method according to claim 1, based on reciprocating liquid switch, which is characterized in that
The length of the rectangle four edges is all higher than highly pressurised liquid pipe (4), low pressure liquid pipe (5), the first connecting tube (6) and the second connection
Manage the internal diameter of the pipeline of (7).
3. the pressure energy recovery method according to claim 1, based on reciprocating liquid switch, which is characterized in that
The cuboid cavity (1) is with solid rectangles (11) along each size all same perpendicular to axis direction.
4. the pressure energy recovery method according to claim 1, based on reciprocating liquid switch, which is characterized in that
The solid rectangles first end face (12), solid rectangles second end face (13), solid rectangles first side (14) and reality
Heart cuboid second side (15) respectively with the cuboid cavity first end face (8), cuboid cavity second end face (9), long
Cube cavity first side (2) and cuboid cavity second side (3) are correspondingly arranged.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588355A (en) * | 2012-02-08 | 2012-07-18 | 北京海思清膜科技有限公司 | Liquid-liquid pressure exchange device and application method thereof |
| CN102815766A (en) * | 2012-09-03 | 2012-12-12 | 北京工业大学 | Liquid pressure energy recovery device based on full rotation valves |
| JP2013086043A (en) * | 2011-10-20 | 2013-05-13 | Dmw Corp | Energy recovery apparatus |
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2016
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013086043A (en) * | 2011-10-20 | 2013-05-13 | Dmw Corp | Energy recovery apparatus |
| CN102588355A (en) * | 2012-02-08 | 2012-07-18 | 北京海思清膜科技有限公司 | Liquid-liquid pressure exchange device and application method thereof |
| CN102815766A (en) * | 2012-09-03 | 2012-12-12 | 北京工业大学 | Liquid pressure energy recovery device based on full rotation valves |
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