CN110064306B - Energy recovery device - Google Patents
Energy recovery device Download PDFInfo
- Publication number
- CN110064306B CN110064306B CN201910319867.6A CN201910319867A CN110064306B CN 110064306 B CN110064306 B CN 110064306B CN 201910319867 A CN201910319867 A CN 201910319867A CN 110064306 B CN110064306 B CN 110064306B
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- window
- fixing plate
- pressure liquid
- plunger
- plunger guide
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- 238000011084 recovery Methods 0.000 title claims description 32
- 239000007788 liquid Substances 0.000 claims abstract description 257
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 5
- 230000010349 pulsation Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 16
- 239000012267 brine Substances 0.000 description 9
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 9
- 239000013535 sea water Substances 0.000 description 7
- 238000001223 reverse osmosis Methods 0.000 description 6
- 238000010612 desalination reaction Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- 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
-
- 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
- B01D61/08—Apparatus therefor
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Reciprocating Pumps (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention belongs to the technical field of energy recycling, and discloses an energy recycling device which realizes efficient transmission and exchange of pressure energy between a pressurizing liquid and a pressurized liquid through reciprocating motion of a plunger in a plunger guide pipe. The sliding ball head at the bottom of the plunger and the annular groove on the surface of the swash plate form a sliding fit relationship, and the sliding ball head cannot be separated from the annular groove on the surface of the sliding ball head in the rotation process of the swash plate. The swash plate rotates one turn, and the plunger completes one reciprocating motion in the plunger guide tube and sequentially passes through 1 pressurizing stage, 1 sealing interval stage, 1 pressure release stage and 1 sealing interval stage. The plunger and the plunger guide tube matched body are connected in parallel, so that the pressure of the pressurizing liquid can be continuously recycled, no pressure or flow break occurs, the flow and pressure pulsation are reduced, and the operation stability of the device is improved. Meanwhile, the invention has the advantages of simple structure, small installation space, high comprehensive efficiency, good engineering magnification and the like.
Description
Technical Field
The invention belongs to the technical field of energy recycling, and particularly relates to an energy recycling device for energy exchange between a pressurizing liquid and a pressurized liquid.
Background
Reverse osmosis seawater desalination is an important technology for solving the shortage of fresh water resources, and has been popularized and applied in global coastal areas. In order to obtain higher desalted water recovery rate in the technical process, the pressure of the pressurized liquid at the inlet of the reverse osmosis membrane unit is usually required to be as high as 5.5-6.0MPa, so that the energy consumption of the system operation is huge. Meanwhile, the pressure of the high-pressure brine discharged from the reverse osmosis membrane unit device is higher than 5.0MPa, and if the brine is discharged directly through a pressure reducing valve, the system energy is wasted greatly. After the energy recovery device is used, the pressure energy stored in the high-pressure brine discharged by the reverse osmosis membrane group device is reused and transferred to the low-pressure fresh seawater, and the operation energy consumption of the reverse osmosis seawater desalination system can be reduced by more than 50 percent according to the desalination water recovery rate estimation of 40 percent.
The hydraulic turbine device is an energy recovery device product which is firstly applied to a reverse osmosis sea water desalination system, the engineering amplification performance of the device product is good, the single-machine treatment amount is high, and the hydraulic turbine device has the defects that the energy conversion process needs to be subjected to two conversion stages of pressure energy, shaft work and pressure energy, and the comprehensive energy recovery efficiency of the device is relatively low and is only 50-80%. The positive displacement energy recovery device can directly transmit the pressure energy of high-pressure brine to low-pressure seawater, and the energy recovery efficiency is up to more than 90%. Valve-controlled energy recovery devices are one of the typical representatives of positive displacement energy recovery devices, which generally consist of three parts: the hydraulic cylinder is connected with the hydraulic valve. The switch is used as a core component of the energy recovery device to control the high-pressure brine and the pressure-relief brine to regularly enter and exit the hydraulic cylinder, the hydraulic cylinder is a main place for pressure exchange, the check valve group is used as a passive execution component to cooperate with the switch to complete the entry and exit of the low-pressure seawater and the high-pressure seawater into and out of the hydraulic cylinder, and the device realizes the continuous recycling of the pressure energy of the high-pressure brine through the cooperative work of the switch, the hydraulic cylinder and the check valve group.
However, the disclosed valve-controlled energy recovery device mainly has the following disadvantages: (1) The valve-controlled energy recovery device switcher adopts a reciprocating switching structure mode, so that the internal structure is complex, and the flow and pressure pulsation of two flows of high-pressure brine and pressure-released brine controlled by the valve-controlled energy recovery device switcher are also large; (2) The amplification of the processing capacity of the valve-controlled energy recovery device can only be realized by increasing the length or the diameter of the hydraulic cylinder, so that the manufacturing cost and the installation space of the device are obviously increased; (3) The check valve set used by the valve-controlled energy recovery device needs to meet the high-frequency switching requirements of the pressurizing stroke and the pressure release stroke of the device, and the service life of the check valve set and the overall operation stability of the device are obviously reduced.
Disclosure of Invention
The invention provides an energy recovery device, which mainly solves the problems of complex structure, large occupied area, large flow and pressure pulsation and the like of a switcher of the existing valve-controlled energy recovery device.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the utility model provides an energy recovery device, includes barrel (1), be provided with n structures in the inner chamber of barrel (1) and the plunger pipe (4) of concentric circle equipartition completely the same, every upper and lower both ends of plunger pipe (4) are all fixed in the inner chamber of barrel (1), every plunger pipe (4) lateral wall is offered to be pressed liquid inflow window (4-1), is pressed liquid outflow window (4-2), is pressed liquid outflow window (4-3), is pressed liquid inflow window (4-4), wherein pressure liquid inflow window (4-1) with be provided with the sealing area between pressure liquid outflow window (4-2) and the two, wherein pressure liquid outflow window (4-3) with be provided with the sealing area between pressure liquid inflow window (4-4) and the two are adjacent;
the inner cavity of the cylinder body (1) is provided with a pressure liquid inflow cavity (23), a pressure liquid outflow cavity (24), a pressure liquid outflow cavity (25) and a pressure liquid inflow cavity (26); the pressure liquid inflow cavity (23) is communicated with the pressure liquid inflow window (4-1) and the pressure liquid inlet (17), the pressure liquid outflow cavity (24) is communicated with the pressure liquid outflow window (4-2) and the pressure liquid outlet (19), the pressure liquid outflow cavity (25) is communicated with the pressure liquid outflow window (4-3) and the pressure liquid outlet (18), and the pressure liquid inflow cavity (26) is communicated with the pressure liquid inflow window (4-4) and the pressure liquid inlet (20); the pressure liquid inlet (17), the pressure liquid outlet (18), the pressure liquid outlet (19) and the pressure liquid inlet (20) are all arranged on the cylinder (1);
a plunger (6) which is in sliding fit with each plunger guide pipe (4) is arranged in each plunger guide pipe (4), and the plunger (6) reciprocates up and down in the plunger guide pipes (4); the plunger (6) is of a hollow structure with the top end and the bottom end both closed, and an upper circulation window (6-1) and a lower circulation window (6-2) are respectively arranged at the upper part and the lower part of the hollow structure; when the upper circulation window (6-1) of the plunger (6) moves to be communicated with the pressure liquid inflow window (4-1) of the plunger guide pipe (4), the lower circulation window (6-2) of the plunger (6) is communicated with the pressure liquid outflow window (4-3) of the plunger guide pipe (4); when the upper flow window (6-1) of the plunger (6) moves to the upper sealing area (4-5) of the plunger guide tube (4), the lower flow window (6-2) of the plunger (6) moves to the lower sealing area (4-6) of the plunger guide tube (4); when the upper circulation window (6-1) of the plunger (6) moves to be communicated with the pressure liquid outflow window (4-2) of the plunger guide pipe (4), the lower circulation window (6-2) of the plunger (6) is communicated with the pressure liquid inflow window (4-4) of the plunger guide pipe (4);
the lower end of each plunger (6) extends out of the plunger guide pipe (4) and is fixedly provided with a sliding ball head (15), and the sliding ball heads (15) are matched with a swash plate (21) below the plungers (6); during the rotation of the swash plate (21), the sliding ball head (15) and the annular groove (21-1) on the surface of the swash plate (21) form a sliding fit relationship; when the swash plate (21) is driven by the driving mechanism to rotate at uniform speed, the swash plate (21) drives the plunger (6) to reciprocate through the sliding ball head (15), so that synchronization of pressure increasing and releasing processes is realized.
Further, an upper fixing plate (16) and a lower fixing plate (13) are fixedly arranged in the inner cavity of the cylinder body (1), and the upper fixing plate (16) and the lower fixing plate (13) respectively form a seal with the cylinder body (1); the upper end of the plunger guide pipe (4) is arranged in the step hole of the upper fixing plate (16), the lower end of the plunger guide pipe is arranged in the step hole of the lower fixing plate (13), and the plunger guide pipe (4) forms a seal with the upper fixing plate (16) and the lower fixing plate (13) respectively; a first fixing plate (7), a second fixing plate (9) and a third fixing plate (11) are sequentially arranged between the upper fixing plate (16) and the lower fixing plate (13) from top to bottom, the first fixing plate (7), the second fixing plate (9) and the third fixing plate (11) form a seal with the cylinder body (1), and the first fixing plate (7), the second fixing plate (9) and the third fixing plate (11) enable the plunger guide pipe (4) to penetrate through and form a seal with the plunger guide pipe;
whereby the first fixing plate (7) seals the pressurizing liquid inflow window (4-1) and the pressurizing liquid outflow window (4-2) on the plunger guide (4), the second fixing plate (9) seals the pressurizing liquid outflow window (4-2) and the pressurizing liquid outflow window (4-3) on the plunger guide (4), the third fixing plate (11) seals the pressurizing liquid outflow window (4-3) and the pressurizing liquid inflow window (4-4) on the plunger guide (4), and the lower fixing plate (13) seals the pressurizing liquid inflow window (4-4) on the plunger guide (4) and the inner cavity of the cylinder (1) below the lower fixing plate (13);
a first sleeve (5) is arranged between the upper fixing plate (16) and the first fixing plate (7), a pressurizing liquid inflow cavity (23) is formed among the upper fixing plate (16), the first fixing plate (7) and the first sleeve (5), and a communicating hole for communicating the pressurizing liquid inlet (17) with the pressurizing liquid inflow cavity (23) is formed in the circumference of the first sleeve (5); a second sleeve (8) is arranged between the first fixing plate (7) and the second fixing plate (9), a pressurizing liquid outflow cavity (24) is formed among the first fixing plate (7), the second fixing plate (9) and the second sleeve (8), and a communicating hole for communicating the pressurizing liquid outlet (19) with the pressurizing liquid outflow cavity (24) is formed in the circumference of the second sleeve (8); a third sleeve (10) is arranged between the second fixing plate (9) and the third fixing plate (11), a pressurized liquid outflow cavity (25) is formed among the second fixing plate (9), the third fixing plate (11) and the third sleeve (10), and a through hole for communicating the pressurized liquid outlet (18) with the pressurized liquid outflow cavity (25) is formed in the circumference of the third sleeve (10); a fourth sleeve (12) is arranged between the third fixing plate (11) and the lower fixing plate (13), a pressurized liquid inflow cavity (26) is formed between the third fixing plate (11) and the lower fixing plate (13) and the fourth sleeve (12), and a through hole for communicating the pressurized liquid inlet (20) with the pressurized liquid inflow cavity (26) is formed in the circumference of the fourth sleeve (12).
Further, a fixed ball head (27) is arranged between the lower fixed plate (13) and the swash plate (21), the top of the fixed ball head (27) is fixedly connected to the center of the lower fixed plate (13), and a ball head structure at the bottom of the fixed ball head (27) is in sliding fit with a fixed ball head baffle ring (28) fixedly arranged at the center of the top of the swash plate (21).
Further, a main shaft (22) is connected to the bottom center of the swash plate (21), the main shaft (22) is mounted on a cylinder lower end cover (31) through a bearing (29) and a bearing cover (30), and the cylinder lower end cover (31) is fixed to the cylinder (1) and arranged below the swash plate (21).
Further, the heights of the openings of the pressurizing liquid inflow window (4-1), the pressurizing liquid outflow window (4-2), the pressurizing liquid outflow window (4-3) and the pressurizing liquid inflow window (4-4) are equal; the sealing area between the pressure liquid inflow window (4-1) and the pressure liquid outflow window (4-2) is equal in height to the sealing area between the pressure liquid outflow window (4-3) and the pressure liquid inflow window (4-4).
Further, the upper part of the upper circulation window (6-1) of the plunger (6), the lower part of the lower circulation window (6-2) and the parts between the upper circulation window (6-1) and the lower circulation window (6-2) are all provided with wear-resistant sealing composite layers.
Further, the symmetry center lines of the n plunger guide pipes (4), the axis of the swash plate (21) and the axis of the cylinder body (1) are all collinear.
Further, the value of n is an integer ranging from 2 to 20.
Further, a wear-resistant sealing compound layer is arranged between the circumference of the swash plate (21) and the inner cavity of the cylinder body (1).
Further, the inclination angle between the surface of the swash plate (21) and the horizontal plane is in the range of 5-60 degrees.
The beneficial effects of the invention are as follows:
according to the invention, the rotary motion of the swash plate is converted into the reciprocating motion of the plunger through the sliding motion of the sliding ball head at the bottom of the plunger in the annular groove on the surface of the swash plate, and the compact integrated design of the energy recovery device is realized through the switching arrangement of a plurality of flow windows between the plunger and the plunger guide pipe.
The plunger used in the device is of a hollow structure with the top end and the bottom end being closed, so that the pressurizing liquid or the pressurized liquid filled in the cavity of the plunger can not additionally generate axial force action except gravity on the plunger, the plunger is not required to push the pressurizing liquid or the pressurized liquid to do work in the running process of the device, the running energy consumption of the device body is smaller, and the comprehensive efficiency is higher.
And thirdly, the device realizes the design requirement of capacity expansion and amplification of the device by parallel arrangement of a plurality of sets of plungers and plunger guide pipe matching bodies, obviously reduces the flow and pressure pulsation of the device and improves the operation stability of the device.
Drawings
FIG. 1 (a) is a schematic view of an energy recovery device according to the present invention;
FIG. 1 (b) is a cross-sectional view A-A of FIG. 1 (a);
FIG. 2 (a) is a schematic illustration of the structure of the plunger tube of FIG. 1 (a);
FIG. 2 (B) is a B-B cross-sectional view of FIG. 2 (a);
FIG. 3 (a) is a schematic illustration of the structure of the plunger of FIG. 1 (a);
FIG. 3 (b) is a C-C cross-sectional view of FIG. 3 (a);
FIG. 4 (a) is a schematic view of the swash plate of FIG. 1 (a);
fig. 4 (b) is a top view of fig. 4 (a);
fig. 5 is a schematic view of the position of three plungers of the device relative to a swash plate.
In the above figures: 1. a cylinder; 2. a stop block on the cylinder body; 3. a cylinder upper end cover; 4. a plunger guide tube; 4-1, pressurizing the liquid inflow window; 4-2, a pressurized liquid outflow window; 4-3, a pressurized liquid outflow window; 4-4, a pressurized liquid inflow window; 4-5, an upper sealing area; 4-6, a lower sealing area; 5. a first sleeve; 6. a plunger; 6-1, an upper circulation window; 6-2, a lower circulation window; 7. a first fixing plate; 8. a second sleeve; 9. a second fixing plate; 10. a third sleeve; 11. a third fixing plate; 12. a fourth sleeve; 13. a lower fixing plate; 14. a cylinder lower stop block; 15. sliding ball head; 16. an upper fixing plate; 17. a pressurized liquid inlet; 18. a pressurized liquid outlet; 19. a pressurized liquid outlet; 20. a pressurized liquid inlet; 21. a swash plate; 21-1, an annular groove; 22. a main shaft; 23. a pressurized liquid inflow chamber; 24. a pressurized liquid outflow chamber; 25. a pressurized liquid outflow chamber; 26. a pressurized liquid inlet chamber; 27. fixing the ball head; 28. fixing a ball head baffle ring; 29. a bearing; 30. a bearing cap; 31. a lower end cover of the cylinder body.
Detailed Description
For further understanding of the invention, the following examples are set forth to illustrate, together with the drawings, the detailed description of which follows:
as shown in fig. 1 (a) and 1 (b), the present embodiment discloses an energy recovery device, which mainly includes a cylinder 1, and a pressure liquid inlet 17, a pressure liquid outlet 19, a pressure liquid outlet 18, and a pressure liquid inlet 20 are sequentially disposed on the side wall of the cylinder 1 from top to bottom; wherein the pressure liquid inlet 17 and the pressure liquid outlet 18 are arranged on one side of the cylinder 1, and the pressure liquid outlet 19 and the pressure liquid inlet 20 are arranged on the other side of the cylinder 1.
The inner cavity of the cylinder 1 is mainly provided with a cylinder upper stop block 2, a cylinder upper end cover 3, an upper fixing plate 16, a plunger guide pipe 4, a first sleeve 5, a plunger 6, a first fixing plate 7, a second sleeve 8, a second fixing plate 9, a third sleeve 10, a third fixing plate 11, a fourth sleeve 12, a lower fixing plate 13, a cylinder lower stop block 14, a sliding ball head 15, a swash plate 21 and a cylinder lower end cover 31.
The upper end and the lower end of the inner cavity of the cylinder body 1 are respectively provided with an annular stop block groove, the annular stop block groove at the upper end is used for installing the cylinder body upper stop block 2, the annular stop block groove at the lower end is used for installing the cylinder body lower stop block 14, and the cylinder body upper stop block 2 and the cylinder body lower stop block 14 are of split type structures. The cylinder upper stopper 2 is fixed to the cylinder upper cover 3 at the lower part thereof by bolts, and the cylinder lower stopper 14 is fixed to the cylinder lower cover 31 at the upper part thereof by bolts. The cylinder bottom end cover 31 is sealed with the inner cavity of the cylinder 1 through an O-shaped ring arranged in the circumferential direction.
An upper fixing plate 16 and a lower fixing plate 13 are arranged between the cylinder upper end cover 3 and the cylinder lower end cover 31. The upper fixing plate 16 is tightly attached to the lower part of the upper end cover 3 of the cylinder body and is limited by the upper end cover 3 of the cylinder body; the lower fixing plate 13 is positioned in the inner cavity of the cylinder body 1 and limited by a step surface formed by reducing the lower part of the inner cavity of the cylinder body 1. A plunger guide 4 is installed between the upper fixing plate 16 and the lower fixing plate 13. Three step holes are uniformly distributed on the concentric circle of the upper fixing plate 16, and the diameter of the lower end of each step hole is increased; the lower fixing plate 13 is concentrically and circularly uniformly provided with three step holes, and the diameter of the upper end of each step hole is increased. The upper ends of three plunger guide pipes 4 with identical structures are respectively and correspondingly arranged on the diameter-expanding parts in the step holes of the upper fixing plate 16 one by one, and the upper ends of the plunger guide pipes 4 are sealed with the upper fixing plate 16 through O-shaped rings arranged on the outer circumference of the upper ends of the plunger guide pipes. The stepped hole of the upper fixing plate 16 also serves to satisfy the distance required for the stroke of the plunger 6 in the reciprocating motion. The lower ends of the three identical plunger guide pipes 4 are respectively and correspondingly arranged on the diameter-expanding parts in the step holes of the lower fixing plate 13, and the sealing is realized with the lower fixing plate 13 through O-shaped rings arranged on the outer circumference of the lower ends of the plunger guide pipes 4. The plunger guide pipes 4 are uniformly distributed circumferentially by taking the axis of the cylinder body 1 as a symmetrical central line, and the number of the plunger guide pipes 4 is an integer ranging from 2 to 20.
As shown in fig. 2 (a) and 2 (b), the same position of each plunger catheter 4 is provided with a pressure liquid inflow window 4-1, a pressure liquid outflow window 4-2, a pressure liquid outflow window 4-3 and a pressure liquid inflow window 4-4 from top to bottom in sequence, and the pressure liquid inflow window 4-1, the pressure liquid outflow window 4-2, the pressure liquid outflow window 4-3 and the pressure liquid inflow window 4-4 are symmetrically arranged on the side wall of the plunger catheter 4. An upper sealing area 4-5 is arranged between the pressure liquid inflow window 4-1 and the pressure liquid outflow window 4-2, and a lower sealing area 4-6 is arranged between the pressure liquid outflow window 4-3 and the pressure liquid inflow window 4-4. The heights of the openings of the pressurizing liquid inflow window 4-1, the pressurizing liquid outflow window 4-2, the pressurizing liquid outflow window 4-3 and the pressurizing liquid inflow window 4-4 of the three plunger guide pipes 4 are equal; the heights of the upper sealing areas 4-5 and the lower sealing areas 4-6 of the three plunger pipes 4 are equal.
Three identical plungers 6 are arranged in the three plunger guide pipes 4 in a one-to-one correspondence manner, the plungers 6 and the plunger guide pipes 4 are in sliding fit, and the plungers 6 can reciprocate up and down in the plunger guide pipes 4. As shown in fig. 3 (a) and 3 (b), the plunger 6 has a hollow structure with both the top and bottom ends closed, and upper and lower flow windows 6-1 and 6-2 are provided at the upper and lower parts of the hollow structure, respectively. When the upper flow-through window 6-1 of the plunger 6 is moved into communication with the pressurized liquid inflow window 4-1 of the plunger guide 4, the lower flow-through window 6-2 of the plunger 6 is communicated with the pressurized liquid outflow window 4-3 of the plunger guide 4; when the upper flow window 6-1 of the plunger 6 moves to the upper sealing area 4-5 of the plunger guide 4, the lower flow window 6-2 of the plunger 6 moves to the lower sealing area 4-6 of the plunger guide 4; when the upper flow-through window 6-1 of the plunger 6 is moved into communication with the pressurized liquid outflow window 4-2 of the plunger guide 4, the lower flow-through window 6-2 of the plunger 6 is communicated with the pressurized liquid inflow window (4-4) of the plunger guide 4. Thereby, the upper circulation window 6-1 and the lower circulation window 6-2 of the plunger 6 are communicated with the pressure liquid inflow window 4-1, the pressure liquid outflow window 4-2, the pressure liquid outflow window 4-3 and the pressure liquid inflow window 4-4 on the plunger guide pipe 4 alternately by the up-and-down reciprocating motion of the plunger 6.
The upper part of the upper circulation window 6-1, the lower part of the lower circulation window 6-2 and the parts between the upper circulation window 6-1 and the lower circulation window 6-2 of the plunger 6 are respectively provided with a wear-resistant sealing compound layer, so that a sliding fit sealing relation is formed with the plunger guide pipe 4. As shown in fig. 5, when the upper flow window 6-1 of the plunger 6 # 2 is communicated with the pressure liquid inflow window 4-1 of the plunger pipe 4 corresponding thereto, the lower flow window 6-2 thereof is communicated with the pressure liquid outflow window 4-3 of the plunger pipe 4 corresponding thereto, and the pressure liquid outflow window 4-2 and the pressure liquid inflow window 4-4 of the plunger pipe 4 corresponding to the plunger 6 # 2 are sealed by the plunger 6; when the upper circulation window 6-1 of the plunger 6 # enters the upper sealing area 4-5 of the plunger guide pipe 4 corresponding to the upper circulation window 6-1, the lower circulation window 6-2 of the plunger 6 enters the lower sealing area 4-6 of the plunger guide pipe 4 corresponding to the lower circulation window, and the pressurizing liquid inflow window 4-1, the pressurizing liquid outflow window 4-2, the pressurizing liquid outflow window 4-3 and the pressurizing liquid inflow window 4-4 of the plunger guide pipe 4 corresponding to the plunger 6 # 1 are sealed by the plunger 6; when the upper flow window 6-1 of the plunger 6 # and the pressurizing liquid outflow window 4-2 of the plunger pipe 4 corresponding thereto are communicated, the lower flow window 6-2 of the plunger 6 and the pressurizing liquid inflow window 4-4 of the plunger pipe 4 corresponding thereto are communicated, and the pressurizing liquid inflow window 4-1 and the pressurizing liquid outflow window 4-3 of the plunger pipe 4 corresponding to the plunger 6 # are sealed by the plunger 6.
The plunger guide 4 sequentially passes through the first fixing plate 7, the second fixing plate 9 and the third fixing plate 11 which are supported and fixed on the plunger guide from top to bottom, and the first fixing plate 7, the second fixing plate 9 and the third fixing plate 11 are arranged at intervals. A first sleeve 5 is arranged between the first fixing plate 7 and the upper fixing plate 16, a second sleeve 8 is arranged between the first fixing plate 7 and the second fixing plate 9, a third sleeve 10 is arranged between the second fixing plate 9 and the third fixing plate 11, and a fourth sleeve 12 is arranged between the third fixing plate 11 and the lower fixing plate 13. The upper end cover 3 and the lower fixing plate 13 of the cylinder are positioned together by upper and lower ends to the upper fixing plate 16, the first sleeve 5, the first fixing plate 7, the second sleeve 8, the second fixing plate 9, the third sleeve 10, the third fixing plate 11 and the fourth sleeve 12.
The first sleeve 5 supports and positions the first fixing plate 7 and the upper fixing plate 16, and the circumference of the first sleeve 5 is provided with a through hole communicated with the pressurizing liquid inlet 17. The first fixing plate 7 is sealed with the inner cavity of the cylinder 1 by an O-ring arranged on the outer circumference thereof, the pressurizing liquid inflow window 4-1 and the pressurizing liquid outflow window 4-2 on each plunger guide 4 are isolated by the first fixing plate 7, and the sealing is realized with the first fixing plate 7 by an O-ring arranged between the pressurizing liquid inflow window 4-1 and the pressurizing liquid outflow window 4-2. A pressurizing liquid inflow chamber 23 is formed among the first fixing plate 7, the upper fixing plate 16 and the first sleeve 5, and the pressurizing liquid inflow chamber 23 communicates with the pressurizing liquid inflow window 4-1 of the plunger guide 4 and communicates with the pressurizing liquid inlet 17 through the flow hole of the first sleeve 5.
The second sleeve 8 supports and positions the first fixing plate 7 and the second fixing plate 9, and the circumference of the second sleeve 8 is provided with a circulation hole communicated with the pressurizing liquid outlet 19. The second fixing plate 9 is sealed with the inner cavity of the cylinder 1 by an O-ring arranged on the outer circumference of the second fixing plate 9, the pressure liquid outflow window 4-2 and the pressure liquid outflow window 4-3 on each plunger pipe 4 are isolated by the second fixing plate 9, and the second fixing plate 9 is sealed by an O-ring arranged between the pressure liquid outflow window 4-2 and the pressure liquid outflow window 4-3. A pressure liquid outflow cavity 24 is formed among the second fixing plate 9, the first fixing plate 7 and the second sleeve 8, and the pressure liquid outflow cavity 24 is communicated with the pressure liquid outflow window 4-2 of the plunger guide 4 and is communicated with the pressure liquid outlet 19 through a communication hole of the second sleeve 8.
The third sleeve 10 supports and positions the second fixing plate 9 and the third fixing plate 11, and the circumference of the third sleeve 10 is provided with a through hole communicated with the pressurized liquid outlet 18. The third fixing plate 11 is sealed with the inner cavity of the cylinder body 1 through an O-shaped ring arranged on the outer circumference of the third fixing plate 11, the pressurized liquid outflow window 4-3 and the pressurized liquid inflow window 4-4 on each plunger guide pipe 4 are isolated by the third fixing plate 11, and the sealing is realized with the third fixing plate 11 through the O-shaped ring arranged between the pressurized liquid outflow window 4-3 and the pressurized liquid inflow window 4-4. A pressurized fluid outflow chamber 25 is formed between the third fixing plate 11, the second fixing plate 9 and the third sleeve 10, the pressurized fluid outflow chamber 25 being in communication with the pressurized fluid outflow window 4-3 of the plunger catheter 4 and with the pressurized fluid outlet 18 through the flow hole of the third sleeve 10.
The fourth sleeve 12 supports and positions the third fixing plate 11 and the lower fixing plate 13, and the circumference of the fourth sleeve 12 is provided with a through hole communicated with the pressurized liquid inlet 20. The lower fixing plate 13 is sealed with the inner cavity of the cylinder body 1 through an O-shaped ring arranged on the outer circumference of the lower fixing plate 13, the pressurized liquid inflow window 4-4 on each plunger guide pipe 4 and the inner cavity of the cylinder body 1 between the lower fixing plate 13 and the cylinder body lower end cover 31 are isolated by the lower fixing plate 13, and the sealing is realized through the O-shaped ring and the lower fixing plate 13. A pressurized fluid inlet chamber 26 is formed between the lower fixed plate 13, the third fixed plate 11 and the fourth sleeve 12, and the pressurized fluid inlet chamber 26 communicates with the pressurized fluid inlet window 4-4 of the plunger guide 4 and communicates with the pressurized fluid inlet 20 through the flow hole of the fourth sleeve 12.
The lower end of the plunger 6 extends out of the plunger guide tube 4 and is fixedly provided with a sliding ball head 15, and the sliding ball head 15 is matched with a swash plate 21 below the plunger 6. As shown in fig. 1 (a), 4 (a) and 4 (b), a swash plate 21 is installed in the inner space of the cylinder 1 between the lower fixing plate 13 and the cylinder lower end cap 31, and the surface of the swash plate 21 is provided with an annular groove 21-1 corresponding to the sliding ball 15. The sliding ball 15 may be placed in the annular groove 21-1 of the surface of the swash plate 21 perpendicularly to the surface thereof, and then the plunger 6 is rotated to the vertical state. During rotation of the swash plate 21, the sliding ball 15 is in sliding engagement with the annular groove 21-1 of the surface of the swash plate 21, and the sliding ball 15 does not disengage from the annular groove 21-1 of the surface of the swash plate 21.
The top center of the swash plate 21 is provided with a mounting hole of the fixed ball 27, and a fixed ball baffle ring 28 is fixedly mounted in the mounting hole. The ball structure at the bottom end of the fixed ball 27 is arranged in the mounting hole at the top center of the swash plate 21 and is in sliding fit with the fixed ball baffle ring 28, and the top end of the fixed ball 27 is connected to the bottom center of the lower fixed plate 13 through threads. The structures of the fixed ball 27 and the fixed ball retainer 28 can effectively position the swash plate 21 to prevent upward movement of the swash plate 21 when it rotates.
The swash plate 21 is provided at the bottom center with a spindle connection hole and is connected to the spindle 22 through the spindle connection hole thereof. The main shaft 22 is mounted to a cylinder lower end cap 31 via a bearing 29 and a bearing cap 30. The external motor drives the swash plate 21 to rotate through the main shaft 22, and the swash plate 21 and the main shaft 22 are positioned and installed through a fixed ball 27, a fixed ball baffle ring 28 and a bearing 29. In addition, a wear-resistant sealing compound layer with a certain height is arranged between the circumference of the swash plate 21 and the inner cavity of the cylinder body 1.
The swash plate 21 drives the plunger 6 to reciprocate through the sliding ball 15, so that the synchronization of the pressure increasing and releasing process is realized. The inclination angle gamma between the surface of the swash plate 21 and the horizontal plane is in the range of 5 to 60 degrees according to the moving stroke of the plunger 6.
It should be noted that, in the energy recovery device of the present invention, the arrangement of the pressure liquid inlet window 4-1, the pressure liquid outlet window 4-2, the pressure liquid outlet window 4-3, and the pressure liquid inlet window 4-4 on the side wall of the plunger tube 4 is not limited to the above embodiment. So long as the following conditions are satisfied: the pressure liquid inflow window 4-1 and the pressure liquid outflow window 4-2 are adjacent and provided with sealing areas therebetween, and the pressure liquid outflow window 4-3 and the pressure liquid inflow window 4-4 are adjacent and provided with sealing areas therebetween; and the distance between the pressure liquid inflow window 4-1 and the pressure liquid outflow window 4-3 is equal to the distance between the pressure liquid outflow window 4-2 and the pressure liquid inflow window 4-4. The positions of the pressure liquid inflow window 4-1, the pressure liquid outflow window 4-2, the pressure liquid outflow window 4-3 and the pressure liquid inflow window 4-4 are respectively in one-to-one correspondence with the pressure liquid inflow cavity 23, the pressure liquid outflow cavity 24, the pressure liquid outflow cavity 25 and the pressure liquid inflow cavity 26, the pressure liquid inflow window 4-1 is always communicated with the pressure liquid inflow cavity 23 and the pressure liquid inlet 17, the pressure liquid outflow window 4-2 is always communicated with the pressure liquid outflow cavity 24 and the pressure liquid outlet 19, the pressure liquid outflow window 4-3 is always communicated with the pressure liquid outflow cavity 25 and the pressure liquid outlet 18, and the pressure liquid inflow window 4-4 is always communicated with the pressure liquid inflow cavity 26 and the pressure liquid inlet 20. That is, in addition to the arrangement sequence shown in the above-described embodiment and the drawings, there are three other arrangements of the pressure liquid inlet chamber 23, the pressure liquid outlet chamber 24, the pressure liquid outlet chamber 25, and the pressure liquid inlet chamber 26.
The working process of the energy recovery device of the invention is as follows:
in the operation state shown in fig. 5, the pressurizing liquid flows in through the pressurizing liquid inlet 17, flows through the flow holes on the circumference of the first sleeve 5, the pressurizing liquid inflow cavity 23, the pressurizing liquid inflow window 4-1 of the plunger pipe 4 and the upper flow window 6-1 of the 2# plunger 6 in sequence, enters the hollow cavity of the 2# plunger 6, performs pressure exchange on the pressurizing liquid pre-filled into the hollow cavity of the 2# plunger 6, and the pressurizing liquid after the pressure exchange becomes high-pressure liquid; the high-pressure liquid sequentially enters the pressurized liquid outflow cavity 25 through the lower flow window 6-2 of the # 2 plunger 6 and the pressurized liquid outflow window 4-3 of the plunger guide 4, and then is discharged out of the device through the flow holes on the circumference of the third sleeve 10 and the pressurized liquid outlet 18, which is a pressurizing process.
At the same time, the pressurized fluid flows in from the pressurized fluid inlet 20, flows through the through holes on the circumference of the fourth sleeve 12, the pressurized fluid inlet chamber 26, the pressurized fluid inlet window 4-4 of the plunger pipe 4 and the lower flow window 6-2 of the 3# plunger 6, and enters the hollow cavity of the 3# plunger 6, and the pressurized fluid decompressed in the hollow cavity of the 3# plunger 6 flows through the upper flow window 6-1 of the 3# plunger 6 and the pressurized fluid outlet window 4-2 of the plunger pipe 4, flows into the pressurized fluid outlet chamber 24, and then flows out of the device through the through holes on the circumference of the second sleeve 8 and the pressurized fluid outlet 19, which is a decompression process.
At the same time, the upper flow window 6-1 of plunger # 6 is in the upper sealing area 4-5 of plunger guide 4 and the lower flow window 6-2 of plunger # 6 is in the lower sealing area 4-6 of plunger guide 4, which is a sealing interval stage.
The swash plate 21 rotates once, and each plunger 6 will perform 1 pressurization stage, 1 seal interval stage, 1 pressure release stage, and 1 seal interval stage in sequence. The three plungers 6 have a phase difference of 120 degrees, so that at least one plunger 6 is in a pressurizing stage at any moment, and one plunger 6 is in a pressure releasing stage, so that the pressure of the pressurizing liquid can be continuously recycled, and no pressure holding or flow stopping occurs.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many changes may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are to be construed as falling within the scope of the present invention.
Claims (7)
1. The energy recovery device comprises a barrel body (1), and is characterized in that n plunger guide pipes (4) which are identical in structure and are uniformly distributed in concentric circles are arranged in an inner cavity of the barrel body (1), the upper end and the lower end of each plunger guide pipe (4) are fixed in the inner cavity of the barrel body (1), a pressure liquid inflow window (4-1), a pressure liquid outflow window (4-2), a pressure liquid outflow window (4-3) and a pressure liquid inflow window (4-4) are formed in different heights on the side wall of each plunger guide pipe (4), sealing areas are formed between the pressure liquid inflow window (4-1) and the pressure liquid outflow window (4-2), and sealing areas are formed between the pressure liquid outflow window (4-3) and the pressure liquid inflow window (4-4);
the inner cavity of the cylinder body (1) is provided with a pressure liquid inflow cavity (23), a pressure liquid outflow cavity (24), a pressure liquid outflow cavity (25) and a pressure liquid inflow cavity (26); the pressure liquid inflow cavity (23) is communicated with the pressure liquid inflow window (4-1) and the pressure liquid inlet (17), the pressure liquid outflow cavity (24) is communicated with the pressure liquid outflow window (4-2) and the pressure liquid outlet (19), the pressure liquid outflow cavity (25) is communicated with the pressure liquid outflow window (4-3) and the pressure liquid outlet (18), and the pressure liquid inflow cavity (26) is communicated with the pressure liquid inflow window (4-4) and the pressure liquid inlet (20); the pressure liquid inlet (17), the pressure liquid outlet (18), the pressure liquid outlet (19) and the pressure liquid inlet (20) are all arranged on the cylinder (1);
a plunger (6) which is in sliding fit with each plunger guide pipe (4) is arranged in each plunger guide pipe (4), and the plunger (6) reciprocates up and down in the plunger guide pipes (4); the plunger (6) is of a hollow structure with the top end and the bottom end both closed, and an upper circulation window (6-1) and a lower circulation window (6-2) are respectively arranged at the upper part and the lower part of the hollow structure; when the upper circulation window (6-1) of the plunger (6) moves to be communicated with the pressure liquid inflow window (4-1) of the plunger guide pipe (4), the lower circulation window (6-2) of the plunger (6) is communicated with the pressure liquid outflow window (4-3) of the plunger guide pipe (4); when the upper flow window (6-1) of the plunger (6) moves to the upper sealing area (4-5) of the plunger guide tube (4), the lower flow window (6-2) of the plunger (6) moves to the lower sealing area (4-6) of the plunger guide tube (4); when the upper circulation window (6-1) of the plunger (6) moves to be communicated with the pressure liquid outflow window (4-2) of the plunger guide pipe (4), the lower circulation window (6-2) of the plunger (6) is communicated with the pressure liquid inflow window (4-4) of the plunger guide pipe (4);
the lower end of each plunger (6) extends out of the plunger guide pipe (4) and is fixedly provided with a sliding ball head (15), and the sliding ball heads (15) are matched with a swash plate (21) below the plungers (6); during the rotation of the swash plate (21), the sliding ball head (15) and the annular groove (21-1) on the surface of the swash plate (21) form a sliding fit relationship; when the swash plate (21) is driven by the driving mechanism to rotate at uniform speed, the swash plate (21) drives the plunger (6) to reciprocate through the sliding ball head (15), so that synchronization of pressure increasing and releasing processes is realized;
an upper fixing plate (16) and a lower fixing plate (13) are fixedly arranged in the inner cavity of the cylinder body (1), and the upper fixing plate (16) and the lower fixing plate (13) respectively form a seal with the cylinder body (1); the upper end of the plunger guide pipe (4) is arranged in the step hole of the upper fixing plate (16), the lower end of the plunger guide pipe is arranged in the step hole of the lower fixing plate (13), and the plunger guide pipe (4) forms a seal with the upper fixing plate (16) and the lower fixing plate (13) respectively; a first fixing plate (7), a second fixing plate (9) and a third fixing plate (11) are sequentially arranged between the upper fixing plate (16) and the lower fixing plate (13) from top to bottom, the first fixing plate (7), the second fixing plate (9) and the third fixing plate (11) form a seal with the cylinder body (1), and the first fixing plate (7), the second fixing plate (9) and the third fixing plate (11) enable the plunger guide pipe (4) to penetrate through and form a seal with the plunger guide pipe;
whereby the first fixing plate (7) seals the pressurizing liquid inflow window (4-1) and the pressurizing liquid outflow window (4-2) on the plunger guide (4), the second fixing plate (9) seals the pressurizing liquid outflow window (4-2) and the pressurizing liquid outflow window (4-3) on the plunger guide (4), the third fixing plate (11) seals the pressurizing liquid outflow window (4-3) and the pressurizing liquid inflow window (4-4) on the plunger guide (4), and the lower fixing plate (13) seals the pressurizing liquid inflow window (4-4) on the plunger guide (4) and the inner cavity of the cylinder (1) below the lower fixing plate (13);
a first sleeve (5) is arranged between the upper fixing plate (16) and the first fixing plate (7), a pressurizing liquid inflow cavity (23) is formed among the upper fixing plate (16), the first fixing plate (7) and the first sleeve (5), and a communicating hole for communicating the pressurizing liquid inlet (17) with the pressurizing liquid inflow cavity (23) is formed in the circumference of the first sleeve (5); a second sleeve (8) is arranged between the first fixing plate (7) and the second fixing plate (9), a pressurizing liquid outflow cavity (24) is formed among the first fixing plate (7), the second fixing plate (9) and the second sleeve (8), and a communicating hole for communicating the pressurizing liquid outlet (19) with the pressurizing liquid outflow cavity (24) is formed in the circumference of the second sleeve (8); a third sleeve (10) is arranged between the second fixing plate (9) and the third fixing plate (11), a pressurized liquid outflow cavity (25) is formed among the second fixing plate (9), the third fixing plate (11) and the third sleeve (10), and a through hole for communicating the pressurized liquid outlet (18) with the pressurized liquid outflow cavity (25) is formed in the circumference of the third sleeve (10); a fourth sleeve (12) is arranged between the third fixing plate (11) and the lower fixing plate (13), the pressurized liquid inflow cavity (26) is formed among the third fixing plate (11), the lower fixing plate (13) and the fourth sleeve (12), and a communication hole for communicating the pressurized liquid inlet (20) with the pressurized liquid inflow cavity (26) is formed in the circumference of the fourth sleeve (12);
a fixed ball head (27) is arranged between the lower fixed plate (13) and the swash plate (21), the top of the fixed ball head (27) is fixedly connected to the center of the lower fixed plate (13), and a ball head structure at the bottom of the fixed ball head (27) is in sliding fit with a fixed ball head baffle ring (28) fixedly arranged at the center of the top of the swash plate (21);
the bottom center of the swash plate (21) is connected with a main shaft (22), the main shaft (22) is mounted on a cylinder lower end cover (31) through a bearing (29) and a bearing cover (30), and the cylinder lower end cover (31) is fixed on the cylinder (1) and arranged below the swash plate (21).
2. An energy recovery device according to claim 1, characterized in that the openings of the pressure liquid inflow window (4-1), the pressure liquid outflow window (4-2), the pressure liquid outflow window (4-3) and the pressure liquid inflow window (4-4) are of equal height; the sealing area between the pressure liquid inflow window (4-1) and the pressure liquid outflow window (4-2) is equal in height to the sealing area between the pressure liquid outflow window (4-3) and the pressure liquid inflow window (4-4).
3. An energy recovery device according to claim 1, characterized in that the upper part of the upper flow-through window (6-1) of the plunger (6), the lower part of the lower flow-through window (6-2) and the parts between the upper flow-through window (6-1) and the lower flow-through window (6-2) are provided with wear-resistant sealing composite layers.
4. An energy recovery device according to claim 1, wherein the symmetry center line of n plunger pipes (4), the axis of the swash plate (21), and the axis of the cylinder (1) are all collinear.
5. The energy recovery device of claim 4, wherein n is an integer in the range of 2 to 20.
6. An energy recovery device according to claim 1, characterized in that a wear-resistant sealing compound layer is arranged between the circumference of the swash plate (21) and the inner cavity of the cylinder (1).
7. An energy recovery device according to claim 1, characterized in that the inclination angle between the surface of the swash plate (21) and the horizontal plane is in the range of 5-60 degrees.
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| CN201910319867.6A CN110064306B (en) | 2019-04-19 | 2019-04-19 | Energy recovery device |
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