CN118361663B - Pressure accumulating type pressure energy recovery device - Google Patents
Pressure accumulating type pressure energy recovery device Download PDFInfo
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- CN118361663B CN118361663B CN202410773772.2A CN202410773772A CN118361663B CN 118361663 B CN118361663 B CN 118361663B CN 202410773772 A CN202410773772 A CN 202410773772A CN 118361663 B CN118361663 B CN 118361663B
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Abstract
The application discloses a pressure accumulating type pressure energy recovery device, which relates to the technical field of energy recovery and comprises an external pipeline module, a pressure exchange module and an internal pipeline module. The external pipeline module is provided with a high-pressure concentrated seawater input pipeline, a pressure release concentrated seawater output pipeline and a medium-pressure concentrated seawater exchange pipeline, and the internal pipeline module is provided with a low-pressure seawater input pipeline, a high-pressure seawater output pipeline and a medium-pressure seawater exchange pipeline; the pressure exchange module is provided with a pressure exchange cavity group; the pressure exchange cavity group comprises a first-stage pressure exchange cavity and a second-stage pressure exchange cavity; the primary pressure exchange cavity and the secondary pressure exchange cavity are respectively provided with a piston; the primary pressure exchange cavity is also provided with a primary elastic piece connected with the piston; the secondary pressure exchange cavity is also provided with a secondary elastic piece which is connected with the piston and has elastic acting force lower than that of the primary elastic piece. The scheme of the application can realize the secondary recovery of the residual pressure energy and improve the recovery efficiency of the residual pressure energy.
Description
Technical Field
The application relates to the technical field of energy recovery, in particular to a pressure accumulating type pressure energy recovery device.
Background
At present, the residual pressure energy recovery device mainly works in two modes, namely centrifugal mode and positive displacement mode. The traditional centrifugal residual pressure energy recovery device can only realize the single-stage recovery and utilization of residual pressure energy, so that the energy recovery efficiency is only 30% -50%, and the recovery efficiency is lower. The positive displacement energy recovery device which is dominant in the market has the energy recovery efficiency of 90 percent. However, such devices require frequent switching of multiple valves during operation, which can easily lead to water hammer phenomena, damage the entire device, and reduce the service life of the device, thereby increasing recovery costs.
Therefore, there is a need to provide new recovery schemes that can increase energy recovery efficiency and reduce recovery costs.
Disclosure of Invention
In view of the above, the present application aims to provide a pressure accumulating type pressure energy recovery device, which can improve energy recovery efficiency and reduce recovery cost.
In order to achieve the technical aim, the application provides a pressure accumulating type pressure energy recovery device, which comprises an external pipeline module, a pressure exchange module and an internal pipeline module;
The inner pipeline module is fixedly arranged in the outer pipeline module;
The pressure exchange module is rotatably arranged between the outer pipeline module and the inner pipeline module;
The outer pipe module includes an outer module body;
The external module main body is provided with a high-pressure concentrated seawater input pipeline, a pressure release concentrated seawater output pipeline and a medium-pressure concentrated seawater exchange pipeline;
the inner pipe module includes an inner module body;
the inner module main body is provided with a low-pressure seawater input pipeline, a high-pressure seawater output pipeline and a medium-pressure seawater exchange pipeline;
an exchange pressure limiting valve is arranged in the medium-pressure seawater exchange pipeline;
an output pressure limiting valve is arranged in the high-pressure seawater output pipeline;
the pressure exchange module comprises an exchange module main body;
the exchange module main body is provided with a pressure exchange cavity group;
the pressure exchange cavity group comprises a first-stage pressure exchange cavity and a second-stage pressure exchange cavity;
the primary pressure exchange cavity and the secondary pressure exchange cavity are internally provided with pistons;
A first-stage elastic piece connected with the piston is also arranged in the first-stage pressure exchange cavity;
the secondary pressure exchange cavity is also provided with a secondary elastic piece which is connected with the piston and has elastic acting force lower than that of the primary elastic piece;
The primary elastic piece is configured to elastically deform with the movement of the connected piston;
The secondary elastic piece is configured to elastically deform along with the movement of the connected piston;
When the exchange module main body rotates to a first phase, two ends of the primary pressure exchange cavity are respectively communicated with the high-pressure concentrated seawater input pipeline and the high-pressure seawater output pipeline, and two ends of the secondary pressure exchange cavity are respectively communicated with the pressure release concentrated seawater output pipeline and the low-pressure seawater input pipeline;
When the exchange module main body rotates to a second phase, two ends of the primary pressure exchange cavity are respectively communicated with the medium-pressure concentrated seawater exchange pipeline and one end of the medium-pressure seawater exchange pipeline, and two ends of the secondary pressure exchange cavity are respectively communicated with the medium-pressure concentrated seawater exchange pipeline and the other end of the medium-pressure seawater exchange pipeline.
Further, the logarithm of the pressure exchange cavity group is 2n pairs;
the number of the high-pressure concentrated seawater input pipeline, the pressure release concentrated seawater output pipeline, the medium-pressure concentrated seawater exchange pipeline and the medium-pressure seawater exchange pipeline is 2 n;
Wherein n is more than or equal to 1 and is an integer.
Further, 2n are circumferentially arranged and/or longitudinally arranged for the pressure exchange chamber group.
Further, n is 1;
the pressure exchange cavity groups are four and are circumferentially distributed around the inner module main body at 90 degrees;
The first-stage pressure exchange cavities of the pair of pressure exchange cavity groups which are centrosymmetric form a first-stage pressure exchange cavity, and the second-stage pressure exchange cavities form a first second-stage pressure exchange cavity;
the first-stage pressure exchange cavities of the other pair of the pressure exchange cavity groups which are centrosymmetric form a second-stage pressure exchange cavity, and the second-stage pressure exchange cavities form a second-stage pressure exchange cavity;
The number of the high-pressure concentrated seawater input pipeline, the pressure release concentrated seawater output pipeline, the medium-pressure concentrated seawater exchange pipeline and the medium-pressure seawater exchange pipeline is two;
the two high-pressure concentrated seawater input pipelines are distributed in a central symmetry manner;
the two medium-pressure concentrated seawater exchange pipelines are distributed in a central symmetry manner and are separated from the two high-pressure concentrated seawater input pipelines by 90 degrees respectively;
The two pressure release concentrated seawater output pipelines are distributed in a central symmetry way;
The two medium-pressure seawater exchange pipelines are distributed in a central symmetry manner and are separated from the two pressure release concentrated seawater output pipelines by 90 degrees respectively;
When the exchange module main body rotates to a first phase, the two second-stage pressure exchange cavities are respectively communicated with one high-pressure concentrated seawater input pipeline, and the two second-stage pressure exchange cavities are respectively communicated with one pressure release concentrated seawater output pipeline and one low-pressure seawater input pipeline; simultaneously, two first primary pressure exchange cavities are respectively communicated with one medium-pressure concentrated seawater exchange pipeline and one medium-pressure seawater exchange pipeline, and simultaneously, two first secondary pressure exchange cavities are respectively communicated with one medium-pressure concentrated seawater exchange pipeline and one medium-pressure seawater exchange pipeline;
When the exchange module main body rotates to a second phase, the two first primary pressure exchange cavities are respectively communicated with one high-pressure concentrated seawater input pipeline, and the two first secondary pressure exchange cavities are respectively communicated with one pressure release concentrated seawater output pipeline and one low-pressure seawater input pipeline; simultaneously, the two second-stage pressure exchange cavities are respectively communicated with one medium-pressure concentrated seawater exchange pipeline and one medium-pressure seawater exchange pipeline, and simultaneously, the two second-stage pressure exchange cavities are respectively communicated with one medium-pressure concentrated seawater exchange pipeline and one medium-pressure seawater exchange pipeline.
Further, the primary pressure exchange chamber is disposed above the secondary pressure exchange chamber.
Further, the output pressure limiting valve is arranged at the inlet of the high-pressure seawater output pipeline.
Further, the exchange pressure limiting valve is arranged at the inlet of the medium-pressure seawater exchange pipeline.
Further, the exchange module main body is connected with an external motor and is driven by the external motor to rotate.
Further, the primary elastic piece is a compression spring;
One end of the primary pressure exchange cavity is fixed with a primary annular cushion block;
One end of the primary elastic piece is fixed in the primary annular cushion block, and the other end of the primary elastic piece is fixed on one side surface of the piston in the primary pressure exchange cavity;
The first-stage annular cushion block can be contacted and propped against one side surface of the piston.
Further, the secondary elastic piece is a compression spring;
one end of the secondary pressure exchange cavity is fixed with a secondary annular cushion block;
One end of the secondary elastic piece is fixed in the secondary annular cushion block, and the other end of the secondary elastic piece is fixed on one side surface of the piston in the secondary pressure exchange cavity;
the second-stage annular cushion block can be contacted and abutted with one side surface of the piston.
According to the technical scheme, when the exchange module main body rotates to the first phase, the high-pressure concentrated seawater input through the high-pressure concentrated seawater input pipeline can push the piston in the first-stage pressure exchange cavity to move, so that the medium-pressure seawater in the first-stage pressure exchange cavity is boosted into high-pressure seawater and then is output through the high-pressure seawater output pipeline; and simultaneously, the secondary elastic piece in the secondary pressure exchange cavity restores the deformation process to drive the piston to move so as to output the pressure release concentrated seawater in the secondary pressure exchange cavity from the pressure release concentrated seawater output pipeline, and the generated negative pressure sucks the low-pressure seawater from the low-pressure seawater input pipeline. When the exchange module main body rotates to the second phase, the first-stage elastic piece in the first-stage pressure exchange cavity restores the deformation process, and the medium-pressure concentrated seawater subjected to primary pressure exchange in the first-stage pressure exchange cavity is pressed into the second-stage pressure exchange cavity through the medium-pressure concentrated seawater exchange pipeline, so that the low-pressure seawater in the second-stage pressure exchange cavity is boosted into medium-pressure seawater and enters the first-stage pressure exchange cavity through the medium-pressure seawater exchange pipeline. Compared with the traditional residual pressure energy recovery device, the pressure accumulating type pressure energy recovery device can realize the secondary recovery of residual pressure energy, and improves the residual pressure energy recovery efficiency; meanwhile, the pressure exchange cavities can adopt corresponding numbers and corresponding longitudinal layers according to the needs, so that flexible arrangement is realized to meet various working occasions, the space utilization rate is improved, and the recovery cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a top cross-sectional view of a pressure accumulating type pressure energy recovery device provided in the present application;
FIG. 2 is a lower cross-sectional view of a pressure accumulating type pressure energy recovery device provided in the present application;
FIG. 3 is a side vertical sectional view of a pressure accumulating type pressure energy recovery apparatus provided in the present application when the outside is communicated;
FIG. 4 is a side vertical sectional view of a pressure accumulating type pressure energy recovery apparatus provided in the present application when the inside thereof is communicated;
FIG. 5 is a schematic diagram illustrating a first phase/third phase operation of a pressure accumulating type pressure energy recovery device according to the present application;
FIG. 6 is a schematic diagram illustrating the operation of the second phase/fourth phase of the pressure energy recovery device according to the present application;
In the figure: 1. an external module body; 2. a switching module body; 3. an inner module body; 4-1, a first primary pressure exchange cavity; 4-2, a second stage pressure exchange cavity; 5. a medium-pressure concentrated seawater exchange pipeline; 6. a piston; 7. a first-stage elastic member; 8. a medium pressure seawater exchange pipeline; 9-1, a first-stage annular cushion block; 9-2, a second-level annular cushion block; 10. a high pressure concentrated seawater input pipeline; 11. a high pressure seawater output pipeline; 12. a secondary elastic member; 13-1, a first secondary pressure exchange chamber; 13-2, a second stage pressure exchange chamber; 14. a low pressure seawater input pipeline; 15. a pressure relief concentrated seawater output pipeline; 16-1, exchange pressure limiting valve; 16-2, an output pressure limiting valve.
Detailed Description
The following description of the embodiments of the present application will be made in detail, but not necessarily all embodiments, with reference to the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.
The embodiment of the application discloses a pressure accumulating type pressure energy recovery device.
Referring to fig. 1 to 4, an embodiment of a pressure accumulating type pressure energy recovery apparatus according to an embodiment of the present application includes:
an outer pipe module, a pressure exchange module, and an inner pipe module.
As shown in fig. 1 and 2, the inner pipeline module is fixedly installed in the outer pipeline module, the pressure exchange module is rotatably installed between the outer pipeline module and the inner pipeline module, the pressure exchange module and the outer pipeline module are all cylindrical, so that the whole body is cylindrical, and the pressure exchange module can be more tightly matched with the outer pipeline module and the inner pipeline module through cylindrical design, and the sealing performance is improved.
For the design of the external pipeline module, the external pipeline module comprises an external module main body 1, wherein the external module main body 1 is of a hollow cylindrical solid structure, and the external pipeline module is not limited in particular; the external module main body 1 is provided with a high-pressure concentrated seawater input pipeline 10, a pressure release concentrated seawater output pipeline 15 and a medium-pressure concentrated seawater exchange pipeline 5.
For the internal pipeline module design, the internal pipeline module comprises an internal module main body 3, wherein the internal module main body 3 is of a cylindrical solid structure, and the internal pipeline module is not limited in particular; the inner module main body 3 is provided with a low-pressure seawater input pipeline 14, a high-pressure seawater output pipeline 11 and a medium-pressure seawater exchange pipeline 8; an exchange pressure limiting valve 16-1 is arranged in the medium-pressure seawater exchange pipeline 8; an output pressure limiting valve 16-2 is arranged in the high-pressure seawater output pipeline 11.
As shown in fig. 3 and fig. 4, for the pressure exchange module design, the pressure exchange module comprises an exchange module body 2, wherein the exchange module body 2 is of a hollow cylindrical solid structure, and is not limited in particular; the exchange module main body 2 is provided with a pressure exchange cavity group; the pressure exchange cavity group comprises a first-stage pressure exchange cavity and a second-stage pressure exchange cavity; the first-stage pressure exchange cavity and the second-stage pressure exchange cavity are respectively provided with a piston 6; the primary pressure exchange cavity is also provided with a primary elastic piece 7 connected with the piston 6; the secondary pressure exchange cavity is also provided with a secondary elastic piece 12 which is connected with the piston 6 and has lower elastic acting force than the primary elastic piece 7. It will be appreciated that the primary elastic member 7 is a high elastic member, and the secondary elastic member 12 is a low elastic member.
The primary elastic member 7 is configured to be elastically deformed as the connected piston 6 moves; the secondary spring 12 is configured to be elastically deformable in response to movement of the connected piston 6.
When the exchange module main body 2 rotates to the first phase, two ends of the primary pressure exchange cavity are respectively communicated with the high-pressure concentrated seawater input pipeline 10 and the high-pressure seawater output pipeline 11, and two ends of the secondary pressure exchange cavity are respectively communicated with the pressure release concentrated seawater output pipeline 15 and the low-pressure seawater input pipeline 14.
When the exchange module main body 2 rotates to the second phase, two ends of the primary pressure exchange cavity are respectively communicated with one ends of the medium-pressure concentrated seawater exchange pipeline 5 and the medium-pressure seawater exchange pipeline 8, and two ends of the secondary pressure exchange cavity are respectively communicated with the other ends of the medium-pressure concentrated seawater exchange pipeline 5 and the medium-pressure seawater exchange pipeline 8.
In the phase exchange process, the inlet and outlet of each pressure exchange cavity are respectively connected with the inner module main body 3 and the outer module main body 1 to realize the complete sealing of the cavity.
When the exchange module main body 2 rotates to a first phase, high-pressure concentrated seawater input through the high-pressure concentrated seawater input pipeline 10 can push the piston 6 in the primary pressure exchange cavity to move, so that medium-pressure seawater in the primary pressure exchange cavity is boosted into high-pressure seawater and then is output through the high-pressure seawater output pipeline 11; and simultaneously, the secondary elastic piece 12 in the secondary pressure exchange cavity restores the deformation process to drive the piston 6 to move so as to output the pressure-released concentrated seawater in the secondary pressure exchange cavity from the pressure-released concentrated seawater output pipeline 15, and the generated negative pressure sucks the low-pressure seawater from the low-pressure seawater input pipeline 14. When the exchange module main body 2 rotates to the second phase, the first-stage elastic piece 7 in the first-stage pressure exchange cavity restores the deformation process, and the medium-pressure concentrated seawater subjected to primary pressure exchange in the first-stage pressure exchange cavity is pressed into the second-stage pressure exchange cavity through the medium-pressure concentrated seawater exchange pipeline 5, so that the low-pressure seawater in the second-stage pressure exchange cavity is boosted into medium-pressure seawater and enters the first-stage pressure exchange cavity through the medium-pressure seawater exchange pipeline 8. Compared with the traditional residual pressure energy recovery device, the pressure accumulating type pressure energy recovery device can realize the secondary recovery of residual pressure energy, and improves the residual pressure energy recovery efficiency; meanwhile, the pressure exchange cavities can adopt corresponding numbers and corresponding longitudinal layers according to the needs, so that flexible arrangement is realized to meet various working occasions, the space utilization rate is improved, and the recovery cost is saved.
The foregoing is a first embodiment of a pressure accumulating type pressure energy recovery device provided by an embodiment of the present application, and the following is a second embodiment of a pressure accumulating type pressure energy recovery device provided by an embodiment of the present application, and refer to fig. 1 to 6 specifically.
Based on the scheme of the first embodiment:
Further, in order to further improve the recovery efficiency of residual pressure energy, the logarithm of the pressure exchange cavity group is designed to be 2n pairs; correspondingly, the number of the high-pressure concentrated seawater input pipeline 10, the pressure release concentrated seawater output pipeline 15, the middle-pressure concentrated seawater exchange pipeline 5 and the middle-pressure seawater exchange pipeline 8 is 2n, namely the number of the pipelines is matched with the number of the pressure exchange cavities; wherein n is more than or equal to 1 and is an integer.
Further, 2n are circumferentially arranged and/or longitudinally arranged for the pressure exchange chamber groups. Taking 2 pairs of pressure exchange cavity groups as an example, four pressure exchange cavity groups are adopted, and the four pressure exchange cavity groups can be circumferentially distributed; taking 4 pairs of pressure exchange cavity groups as an example, eight pressure exchange cavity groups can be arranged in an up-down layered mode, four pressure exchange cavity groups are arranged on the upper layer, and the other four pressure exchange cavity groups are arranged on the lower layer, and the pressure exchange cavity groups can be specifically designed in a changing mode according to actual needs without limitation.
Further, taking n as 1 as an example:
I.e. four pressure exchange chamber groups, which are circumferentially distributed at 90 ° intervals around the inner module body 3.
For convenience of explanation, the first-stage pressure exchange chamber of the pair of pressure exchange chamber groups having central symmetry is regarded as the first-stage pressure exchange chamber 4-1, and the second-stage pressure exchange chamber thereof is regarded as the first second-stage pressure exchange chamber 13-1.
The first pressure exchange chamber of the other pair of pressure exchange chamber groups which are centrosymmetric is taken as a second first pressure exchange chamber 4-2, and the second pressure exchange chamber is taken as a second pressure exchange chamber 13-2.
Correspondingly, the number of the high-pressure concentrated seawater input pipeline 10, the pressure release concentrated seawater output pipeline 15, the middle-pressure concentrated seawater exchange pipeline 5 and the middle-pressure seawater exchange pipeline 8 is two.
The two high-pressure concentrated seawater input pipelines 10 are distributed in a central symmetry manner; the two medium-pressure concentrated seawater exchange pipelines 5 are distributed in a central symmetry manner and are respectively separated from the two high-pressure concentrated seawater input pipelines 10 by 90 degrees.
The two pressure relief concentrated seawater output pipelines 15 are distributed in a central symmetry manner; the two medium-pressure seawater exchange pipelines 8 are distributed in a central symmetry manner and are respectively separated from the two pressure release concentrated seawater output pipelines 15 by 90 degrees.
When the exchange module main body 2 rotates to a first phase, the two second-stage pressure exchange cavities 4-2 are respectively communicated with a high-pressure concentrated seawater input pipeline 10, and the two second-stage pressure exchange cavities 13-2 are respectively communicated with a pressure release concentrated seawater output pipeline 15 and a low-pressure seawater input pipeline 14; simultaneously, the two first primary pressure exchange cavities 4-1 are respectively communicated with a medium-pressure concentrated seawater exchange pipeline 5 and a medium-pressure seawater exchange pipeline 8, and simultaneously, the two first secondary pressure exchange cavities 13-1 are respectively communicated with the medium-pressure concentrated seawater exchange pipeline 5 and the medium-pressure seawater exchange pipeline 8.
When the exchange module main body 2 rotates to the second phase, the two first primary pressure exchange cavities 4-1 are respectively communicated with a high-pressure concentrated seawater input pipeline 10, and the two first secondary pressure exchange cavities 13-1 are respectively communicated with a pressure release concentrated seawater output pipeline 15 and a low-pressure seawater input pipeline 14; simultaneously, the two second-stage pressure exchange cavities 4-2 are respectively communicated with a medium-pressure concentrated seawater exchange pipeline 5 and a medium-pressure seawater exchange pipeline 8, and simultaneously, the two second-stage pressure exchange cavities 13-2 are respectively communicated with the medium-pressure concentrated seawater exchange pipeline 5 and the medium-pressure seawater exchange pipeline 8.
It should be noted that, taking four pressure exchange cavity groups and circumferential distribution as an example, the exchange module main body 2 has four phases, where the first phase is symmetrical with the third phase, and the process is the same; the second phase is symmetrical with the fourth phase, and the process is the same.
Further, the primary pressure exchange cavity is preferably arranged above the secondary pressure exchange cavity, so that the space utilization rate is improved.
Further, an output pressure limiting valve 16-2 is provided at the inlet of the high-pressure seawater output pipe 11.
Further, an exchange pressure limiting valve 16-1 is provided at the inlet of the medium pressure seawater exchange line 8.
Further, the exchange module main body 2 is connected to an external motor (not shown), and is driven to rotate by the external motor.
Further, as shown in fig. 5, the primary elastic member 7 is preferably a compression spring for convenience of installation and arrangement.
One end of the primary pressure exchange cavity is fixed with a primary annular cushion block 9-1, one end of the primary elastic piece 7 is fixed in the primary annular cushion block 9-1, the other end of the primary elastic piece is fixed on one side face of the piston 6 in the primary pressure exchange cavity, and the primary annular cushion block 9-1 can be in contact with and propped against one side face of the piston 6. The primary annular cushion block 9-1 is designed to avoid the primary elastic member 7 being excessively compressed, thereby ensuring the service life thereof.
Further, as shown in fig. 5, the secondary spring 12 is preferably a compression spring for ease of installation and placement.
One end of the secondary pressure exchange cavity is fixed with a secondary annular cushion block 9-2; one end of the secondary elastic piece 12 is fixed in the secondary annular cushion block 9-2, and the other end is fixed on one side surface of the piston 6 in the secondary pressure exchange cavity; the secondary annular cushion 9-2 can contact and abut against one side surface of the piston 6. In the same way, the design of the secondary annular cushion 9-2 can avoid the secondary elastic element 12 being excessively compressed, thereby ensuring the service life thereof.
The working principle of the pressure accumulating type pressure energy recovery device is as follows:
As shown in fig. 5, in the first phase, the second stage pressure exchange chamber 4-2 is filled with medium pressure seawater, high pressure concentrated seawater enters the second stage pressure exchange chamber 4-2 through the high pressure concentrated seawater input pipeline 10, the piston 6 is pushed and the first stage elastic member 7 is compressed, the medium pressure seawater is boosted to high pressure seawater, the high pressure seawater is discharged through the high pressure seawater output pipeline 11 after reaching the pressure set by the output pressure limiting valve 16-2, and the high pressure concentrated seawater is depressurized to medium pressure concentrated seawater after pressure exchange. The pressure exchange module completes corresponding work in rotation, and the rotation speed of the pressure exchange module can be controlled by adjusting the power of an external motor, so that when the high-pressure seawater is just completely discharged, the inlet of the second-stage pressure exchange cavity 4-2 rotates to be completely attached to the outer wall of the device.
The second-stage pressure exchange chamber 13-2 is filled with the pressure-released concentrated seawater which is transferred by the pressure twice, and when the second-stage elastic member 12 in a compressed state is restored to deform, the piston 6 is pushed, the pressure-released concentrated seawater is pushed into the pressure-released concentrated seawater output pipeline 15 to be discharged, and negative pressure is formed in the chamber so as to suck the low-pressure seawater from the low-pressure seawater input pipeline 14. When the low-pressure seawater just completely fills the second-stage pressure exchange chamber 13-2, the inlet of the second-stage pressure exchange chamber 13-2 is rotated to be completely fitted with the outside module body 1. The operation of the second-stage pressure exchange chamber 4-2 and the second-stage pressure exchange chamber 13-2 described above is performed simultaneously.
As shown in fig. 6, when the exchange module main body 2 rotates 90 ° to the second phase, the piston 6 is pushed when the first-stage elastic member 7 in the compressed state in the first-stage pressure exchange chamber 4-1 is restored to be deformed, so that the medium-pressure concentrated seawater in the first-stage pressure exchange chamber 4-1 enters the first-stage pressure exchange chamber 13-1 through the medium-pressure concentrated seawater exchange pipeline 5.
In the first secondary pressure exchange chamber 13-1, the medium-pressure concentrated seawater pushes the piston 6 and compresses the secondary elastic member 12, so that the low-pressure seawater is boosted into medium-pressure seawater, and enters the first primary pressure exchange chamber 4-1 through the medium-pressure seawater exchange pipeline 8 after reaching the pressure set by the exchange pressure limiting valve 16-1, and at the moment, the medium-pressure concentrated seawater in the first secondary pressure exchange chamber 13-1 becomes decompressed concentrated seawater after being decompressed.
So far, the sea water exchange in the pressure exchange cavity group is completed, and when the sea water exchange is completed, the pressure exchange cavity group rotates to be completely attached to the outer wall of the device.
After the first phase and the second phase work, the pressure exchange cavity group completes one-time pressure energy recovery; in the subsequent work, the pressure exchange cavity group can reach a third phase after rotating by 90 degrees, and after the corresponding work is completed, the pressure exchange cavity group rotates by 90 degrees again on the basis of the third phase to reach a fourth phase. The device operates in the third phase exactly as the first phase and in the fourth phase exactly as the second phase. The continuous recovery of residual pressure energy can be realized through the continuous rotation of the pressure exchange module.
The foregoing describes a pressure accumulating type pressure energy recovery device provided by the present application in detail, and those skilled in the art will appreciate that the present application is not limited to the above description, since modifications can be made in the specific embodiments and application ranges according to the concepts of the embodiments of the present application.
Claims (10)
1. The pressure accumulating type pressure energy recovery device is characterized by comprising an external pipeline module, a pressure exchange module and an internal pipeline module;
The inner pipeline module is fixedly arranged in the outer pipeline module;
The pressure exchange module is rotatably arranged between the outer pipeline module and the inner pipeline module;
The outer pipe module comprises an outer module body (1);
the external module main body (1) is provided with a high-pressure concentrated seawater input pipeline (10), a pressure release concentrated seawater output pipeline (15) and a medium-pressure concentrated seawater exchange pipeline (5);
The inner pipe module comprises an inner module body (3);
The inner module main body (3) is provided with a low-pressure seawater input pipeline (14), a high-pressure seawater output pipeline (11) and a medium-pressure seawater exchange pipeline (8);
an exchange pressure limiting valve (16-1) is arranged in the medium-pressure seawater exchange pipeline (8);
an output pressure limiting valve (16-2) is arranged in the high-pressure seawater output pipeline (11);
The pressure exchange module comprises an exchange module body (2);
the exchange module main body (2) is provided with a pressure exchange cavity group;
the pressure exchange cavity group comprises a first-stage pressure exchange cavity and a second-stage pressure exchange cavity;
the primary pressure exchange cavity and the secondary pressure exchange cavity are internally provided with pistons (6);
a primary elastic piece (7) connected with the piston (6) is also arranged in the primary pressure exchange cavity;
A second-stage elastic piece (12) which is connected with the piston (6) and has elastic acting force lower than that of the first-stage elastic piece (7) is also arranged in the second-stage pressure exchange cavity;
the primary elastic element (7) is configured to be elastically deformable as the piston (6) connected thereto moves;
The secondary elastic member (12) is configured to be elastically deformable as the piston (6) connected thereto moves;
when the exchange module main body (2) rotates to a first phase, two ends of the primary pressure exchange cavity are respectively communicated with the high-pressure concentrated seawater input pipeline (10) and the high-pressure seawater output pipeline (11), and two ends of the secondary pressure exchange cavity are respectively communicated with the pressure release concentrated seawater output pipeline (15) and the low-pressure seawater input pipeline (14);
When the exchange module main body (2) rotates to a second phase, two ends of the primary pressure exchange cavity are respectively communicated with one end of the medium-pressure concentrated seawater exchange pipeline (5) and one end of the medium-pressure seawater exchange pipeline (8), and two ends of the secondary pressure exchange cavity are respectively communicated with the other ends of the medium-pressure concentrated seawater exchange pipeline (5) and the medium-pressure seawater exchange pipeline (8).
2. A pressure accumulating type pressure energy recovering apparatus according to claim 1, wherein the logarithm of the pressure exchanging chamber group is 2n pairs;
the number of the high-pressure concentrated seawater input pipelines (10), the pressure release concentrated seawater output pipelines (15), the middle-pressure concentrated seawater exchange pipelines (5) and the middle-pressure seawater exchange pipelines (8) is 2 n;
Wherein n is more than or equal to 1 and is an integer.
3. A pressure accumulating type pressure energy recovering apparatus according to claim 2, wherein 2n is circumferentially arranged and/or longitudinally arranged to the pressure exchanging chamber group.
4. A pressure accumulating type pressure energy recovering apparatus according to claim 2, wherein n is 1;
the number of the pressure exchange cavity groups is four, and the pressure exchange cavity groups are circumferentially distributed around the inner module main body (3) at intervals of 90 degrees;
the first-stage pressure exchange cavities of the pair of pressure exchange cavity groups which are centrosymmetric form a first-stage pressure exchange cavity (4-1), and the second-stage pressure exchange cavities thereof form a first second-stage pressure exchange cavity (13-1);
-said first pressure exchange chambers of the other pair of said pressure exchange chamber groups being centrosymmetric form a second first pressure exchange chamber (4-2) and said second pressure exchange chambers thereof form a second pressure exchange chamber (13-2);
The number of the high-pressure concentrated seawater input pipeline (10), the pressure release concentrated seawater output pipeline (15), the middle-pressure concentrated seawater exchange pipeline (5) and the middle-pressure seawater exchange pipeline (8) is two;
the two high-pressure concentrated seawater input pipelines (10) are distributed in a central symmetry manner;
the two medium-pressure concentrated seawater exchange pipelines (5) are distributed in a central symmetry manner and are respectively separated from the two high-pressure concentrated seawater input pipelines (10) by 90 degrees;
the two pressure release concentrated seawater output pipelines (15) are distributed in a central symmetry manner;
the two medium-pressure seawater exchange pipelines (8) are distributed in a central symmetry manner and are respectively separated from the two pressure release concentrated seawater output pipelines (15) by 90 degrees;
when the exchange module main body (2) rotates to a first phase, the two second-stage pressure exchange cavities (4-2) are respectively communicated with one high-pressure concentrated seawater input pipeline (10), and the two second-stage pressure exchange cavities (13-2) are respectively communicated with one pressure release concentrated seawater output pipeline (15) and one low-pressure seawater input pipeline (14); simultaneously, two first primary pressure exchange cavities (4-1) are respectively communicated with one medium-pressure concentrated seawater exchange pipeline (5) and one medium-pressure seawater exchange pipeline (8), and simultaneously, two first secondary pressure exchange cavities (13-1) are respectively communicated with one medium-pressure concentrated seawater exchange pipeline (5) and one medium-pressure seawater exchange pipeline (8);
When the exchange module main body (2) rotates to a second phase, the two first primary pressure exchange cavities (4-1) are respectively communicated with one high-pressure concentrated seawater input pipeline (10), and the two first secondary pressure exchange cavities (13-1) are respectively communicated with one pressure release concentrated seawater output pipeline (15) and one low-pressure seawater input pipeline (14); simultaneously, the two second-stage pressure exchange cavities (4-2) are respectively communicated with one medium-pressure concentrated seawater exchange pipeline (5) and one medium-pressure seawater exchange pipeline (8), and simultaneously, the two second-stage pressure exchange cavities (13-2) are respectively communicated with one medium-pressure concentrated seawater exchange pipeline (5) and one medium-pressure seawater exchange pipeline (8).
5. A pressure accumulating type pressure energy recovering apparatus according to claim 1, wherein said primary pressure exchanging chamber is provided above said secondary pressure exchanging chamber.
6. A pressure accumulating type pressure energy recovering device as defined in claim 1, wherein the output pressure limiting valve (16-2) is provided at the inlet of the high pressure seawater output pipe (11).
7. A pressure accumulating type pressure energy recovering device as claimed in claim 1, wherein the exchange pressure limiting valve (16-1) is provided at the inlet of the medium pressure seawater exchange pipe (8).
8. A pressure accumulating type pressure energy recovering apparatus according to claim 1, wherein the exchanging module main body (2) is connected to an external motor, and is driven to rotate by the external motor.
9. A pressure accumulating type pressure energy recovering device as defined in claim 1, wherein the primary elastic member (7) is a compression spring;
One end of the primary pressure exchange cavity is fixed with a primary annular cushion block (9-1);
one end of the primary elastic piece (7) is fixed in the primary annular cushion block (9-1), and the other end of the primary elastic piece is fixed on one side surface of the piston (6) in the primary pressure exchange cavity;
The primary annular cushion block (9-1) can be contacted and abutted with one side surface of the piston (6).
10. A pressure accumulating type pressure energy recovering device as defined in claim 1, wherein the secondary elastic member (12) is a compression spring;
one end of the secondary pressure exchange cavity is fixed with a secondary annular cushion block (9-2);
one end of the secondary elastic piece (12) is fixed in the secondary annular cushion block (9-2), and the other end of the secondary elastic piece is fixed on one side surface of the piston (6) in the secondary pressure exchange cavity;
The secondary annular cushion block (9-2) can be contacted and abutted with one side surface of the piston (6).
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832216A (en) * | 2010-04-15 | 2010-09-15 | 广东海洋大学 | Ocean energy collection method and device |
| CN106246489A (en) * | 2016-08-29 | 2016-12-21 | 山东天瑞重工有限公司 | Desalinization high-pressure hydraulic pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8622714B2 (en) * | 2006-11-14 | 2014-01-07 | Flowserve Holdings, Inc. | Pressure exchanger |
| CN108591008A (en) * | 2018-07-06 | 2018-09-28 | 北京普发动力控股股份有限公司 | Hydrogenation stations hydraulic piston type hydrogen gas compressor |
| US20230375009A1 (en) * | 2022-05-20 | 2023-11-23 | Sulzer Management Ag | Rotary pressure exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832216A (en) * | 2010-04-15 | 2010-09-15 | 广东海洋大学 | Ocean energy collection method and device |
| CN106246489A (en) * | 2016-08-29 | 2016-12-21 | 山东天瑞重工有限公司 | Desalinization high-pressure hydraulic pump |
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