阅读说明：本技术 一种高盐水能量转化装置 (High salt water energy conversion device ) 是由 马跃华 于 2019-09-06 设计创作，主要内容包括：本发明属于能量转化控制领域,涉及一种高盐水能量转化装置,其包括：水压缸体、水压缸活塞,水压缸的一端设置有原水入口,水压缸的另一端设置有浓盐水入口,高压浓盐水推动水压缸活塞向原水侧移动,有效降低了本装置高压出水管道连接的增压泵的扬程,降低系统的建设成本及运行成本,该装置还包括升压管和泄压管,高压浓盐水经过升压管时以极小的流量通过升压管进入水压缸,水压缸开始“预增压”过程,避免止回阀的阀板与阀体瞬间敲击损坏,延长止回阀的使用寿命,水压缸内的高压浓盐水通过泄压管进行泄压,泄压管管径较小,并未有大流量高压浓盐水流出,可“预降压”,避免大流量高压浓盐水与低压浓盐水接触时发生的水锤问题和装置的振动。(The invention belongs to the field of energy conversion control, and relates to a high-salt water energy conversion device, which comprises: the device comprises a hydraulic cylinder body and a hydraulic cylinder piston, wherein a raw water inlet is formed in one end of the hydraulic cylinder, a strong brine inlet is formed in the other end of the hydraulic cylinder, high-pressure strong brine pushes the hydraulic cylinder piston to move towards the raw water side, the lift of a booster pump connected with a high-pressure water outlet pipeline of the device is effectively reduced, the construction cost and the operation cost of the system are reduced, the device also comprises a pressure boosting pipe and a pressure relief pipe, when the high-pressure strong brine passes through the pressure boosting pipe, the high-pressure strong brine enters the hydraulic cylinder through the pressure boosting pipe at a very small flow, the hydraulic cylinder starts a 'pre-pressurization' process, the valve plate and the valve body of the check valve are prevented from being instantaneously knocked and damaged, the service life of the check valve is prolonged, the high-pressure strong brine in the hydraulic cylinder is decompressed through the pressure relief pipe, the diameter of the pressure relief pipe is small, no large-flow high-pressure strong brine flows out, the device can pre-reduce the pressure and avoid the water hammer problem and the vibration of the device when the high-flow high-pressure strong brine is contacted with the low-pressure strong brine.)

1. The high-saline water energy conversion device is characterized by comprising a hydraulic cylinder, wherein the hydraulic cylinder comprises a hydraulic cylinder body and a hydraulic cylinder piston;

the hydraulic cylinder piston is arranged in the hydraulic cylinder body and reciprocates in the hydraulic cylinder body, a raw water inlet is formed in one end of the hydraulic cylinder, a high-pressure strong brine inlet is formed in the other end of the hydraulic cylinder, the raw water and the high-pressure strong brine in the hydraulic cylinder are positioned on two sides of the hydraulic cylinder piston, and the high-pressure strong brine pushes the hydraulic cylinder piston to move to the raw water side;

a hydraulic cylinder piston guide rod is arranged on the hydraulic cylinder piston, one end of the hydraulic cylinder piston guide rod is connected with the end surface of the hydraulic cylinder piston close to the raw water inlet of the hydraulic cylinder, the other end of the hydraulic cylinder piston guide rod extends out of one end of the hydraulic cylinder body, and the hydraulic cylinder piston guide rod freely stretches and retracts in the hydraulic cylinder body along with the movement of the hydraulic cylinder piston;

the area of one side of the hydraulic cylinder piston, which is connected with the hydraulic cylinder piston guide rod and is contacted with raw water, is smaller than the area of the other side of the hydraulic cylinder piston, which is contacted with high-pressure strong brine, and the high-pressure strong brine pushes the hydraulic cylinder piston to move towards the raw water inlet direction of the hydraulic cylinder.

2. The high brine energy conversion device of claim 1, wherein said hydraulic cylinder further comprises:

the sealing baffle is arranged at an opening at one end of the hydraulic cylinder body, a sealing hole is formed in the middle of the sealing baffle, the other end of the hydraulic cylinder piston guide rod penetrates through the sealing hole to extend out of the hydraulic cylinder body, and the hydraulic cylinder piston guide rod is in sealing fit with the sealing hole;

the guide baffle plate and the sealing baffle plate are arranged at intervals, a guide hole is formed in the guide baffle plate, and the hydraulic cylinder piston guide rod sequentially penetrates through the sealing hole and the guide hole and reciprocates under the guide of the guide baffle plate.

3. The high brine energy conversion device of claim 2, wherein said hydraulic cylinder further comprises:

the end part pore plate is arranged at one end of the hydraulic cylinder and arranged at one end of the hydraulic cylinder body along the extending direction of the hydraulic cylinder piston guide rod, the end part pore plate is connected with the guide baffle plate through a protective cover, the protective cover is arranged in the circumferential direction of the motion track of the hydraulic cylinder piston guide rod, the movement of the hydraulic cylinder piston guide rod is prevented from being influenced by the outside, and a hole is arranged on the end part pore plate and is communicated with the space air pressure and the external air pressure between the guide baffle plate and the end part pore plate.

4. The high-saline-water energy conversion device according to claim 1, wherein the number of the hydraulic cylinders is two, namely an A hydraulic cylinder and a B hydraulic cylinder, one end of each of the two hydraulic cylinders is provided with a check valve set, the other end of each of the two hydraulic cylinders is connected with a reversing device, and the reversing device adjusts the in-and-out time of the strong brine in the two hydraulic cylinders to ensure that at least one hydraulic cylinder piston moves towards one end of the hydraulic cylinder body at any time.

5. The high-salinity water energy conversion device according to claim 4, wherein the check valve set comprises a low-pressure water inlet check valve and a high-pressure water outlet check valve, the check valve set is connected with the hydraulic cylinder body, and raw water is supplied with low-pressure raw water into the hydraulic cylinder body through the low-pressure water inlet check valve; the high-pressure water outlet check valve discharges high-pressure raw water to the outside of the hydraulic cylinder body.

6. The high brine energy conversion device of claim 5, wherein the check valve set further comprises a flow guide pipe, and the high pressure water outlet check valve and the low pressure water inlet check valve are respectively communicated with the inside of the hydraulic cylinder through the flow guide pipe.

7. The high-salt water energy conversion device according to claim 4, wherein the reversing device comprises a reversing cylinder, a reversing piston group, a communicating pipe A, a communicating pipe B, a high-pressure liquid inlet, a low-pressure liquid outlet A, a low-pressure liquid outlet B and an actuating mechanism;

one end of the high-pressure liquid inlet, one end of the communicating pipe A and one end of the communicating pipe B are respectively arranged on the side wall of the reversing cylinder body and are communicated with the interior of the reversing cylinder body; the other end of the hydraulic cylinder A is communicated with a liquid supply device, the other end of the hydraulic cylinder A and the other end of the hydraulic cylinder B respectively; along the length direction of the reversing cylinder body, the communicating pipe A and the communicating pipe B are respectively arranged on two sides of the high-pressure liquid inlet;

the reversing piston group is arranged in the reversing cylinder body and driven by the actuating mechanism to reciprocate along the reversing cylinder body, the reversing piston group comprises a reversing piston A, a reversing piston B and a piston connecting rod, and the reversing piston A and the reversing piston B are connected through the piston connecting rod;

along the length direction of the reversing cylinder body, the length of the reversing piston A is smaller than the distance between the left edge of the pipe orifice of the communicating pipe A and the right edge of the pipe orifice of the high-pressure liquid inlet; the length of the reversing piston B is smaller than the distance between the right edge of the pipe orifice of the communicating pipe B and the left edge of the pipe orifice of the high-pressure liquid inlet;

the low-pressure liquid outlet A and the low-pressure liquid outlet B are respectively arranged at two ends of the reversing cylinder body.

8. The high brine energy conversion device of claim 7, wherein the reversing device further comprises a booster tube, one end of the pressure boosting pipe is communicated with the side wall of the reversing cylinder body, the other end of the pressure boosting pipe is communicated with the other end of the hydraulic cylinder, the number of the booster pipes is two, the booster pipes are respectively an A booster pipe and a B booster pipe, the A booster pipe is connected with the A hydraulic cylinder, the B booster pipe is connected with the B hydraulic cylinder, along the length direction of the reversing cylinder body, the connecting point of the A boosting pipe and the reversing cylinder body is positioned between the A communicating pipe and the high-pressure liquid inlet, the connecting point of the B boosting pipe and the reversing cylinder body is positioned between the B communicating pipe and the high-pressure liquid inlet and along the length direction of the reversing cylinder body, the length of the reversing piston A is smaller than or equal to the distance between the left edge of the pipe orifice of the pressure boosting pipe A and the right edge of the pipe orifice of the high-pressure liquid inlet; the length of the reversing piston B is less than or equal to the distance between the right edge of the pipe orifice of the booster pipe B and the left edge of the pipe orifice of the high-pressure liquid inlet; the water inflow of the pressure rising pipe A is 2% -8% of that of the communicating pipe A, and the water inflow of the pressure rising pipe B is 2% -8% of that of the communicating pipe B.

9. The high brine energy conversion device of claim 8, wherein the reversing device further comprises a pressure relief tube, one end of the pressure relief pipe is communicated with the side wall of the reversing cylinder body, the other end of the pressure relief pipe is communicated with the other end of the hydraulic cylinder, the number of the pressure relief pipes is two, the two pressure relief pipes are respectively an A pressure relief pipe and a B pressure relief pipe, the A pressure relief pipe is connected with the A hydraulic cylinder, the B pressure relief pipe is connected with the B hydraulic cylinder, the water yield of the A pressure relief pipe is 2-8% of that of the A communicating pipe, the water yield of the B pressure relief pipe is 2-8% of that of the B communicating pipe, along the length direction of the reversing cylinder body, the connection point of the A pressure relief pipe and the reversing cylinder body is located on the right side of the A communicating pipe, and the connection point of the B pressure relief pipe and the reversing cylinder body is located on the left side of the B communicating pipe.

10. The high-salinity water energy conversion device according to claim 9, wherein the reversing device further comprises end baffles, two end baffles are respectively sealed and arranged at openings at two ends of the reversing cylinder body, through holes are arranged on the end baffles, piston rods are arranged on the reversing piston A and the reversing piston B, the piston rods penetrate through the corresponding through holes and extend out of the reversing cylinder body, and the actuating mechanism is connected with one of the piston rods and drives the reversing piston group to reciprocate along the reversing cylinder body.

Technical Field

The invention belongs to the field of energy conversion control, and particularly relates to a high-salt water energy conversion device.

Background

In the field of high salt water treatment, reverse osmosis membrane separation technology is a conventional treatment process. The raw water (i.e., high salt water) on one side of the reverse osmosis membrane is pressurized, and when the raw water pressure exceeds its osmotic pressure, the water in the raw water is reverse-permeated against the direction of natural permeation. Thereby obtaining permeated water, namely permeate liquid, on the low-pressure side of the reverse osmosis membrane; the high pressure side obtains concentrated solution, namely high pressure strong brine. In a broad sense, high salinity water refers to water with a total salt content (based on NaCl) of more than 1% by mass.

Since the strong brine discharged from the reverse osmosis membrane (or called reverse osmosis device) has a high pressure, it can be called high-pressure strong brine, and if it is directly discharged and wasted, the energy of the strong brine is conventionally recovered by using an energy conversion device, wherein the energy conversion efficiency of the power exchange type energy conversion device is high because it only needs to go through a "pressure energy-pressure energy" one-step conversion process, which has become the focus of research. A hydraulic cylinder type energy conversion device belongs to a power exchange type energy conversion device and comprises a cylinder body and a piston in the cylinder body. The strong brine and the raw water respectively enter the cylinder body from two ends of the cylinder body, the high-pressure strong brine pushes the piston to compress the raw water, and the pressure intensity of the high-pressure strong brine is transferred to the raw water, so that energy exchange is realized.

In the conventional hydraulic cylinder type energy conversion device, when fluid flows in equipment, on-way loss exists, namely, in the flowing process of water flow, the water head loss is caused by friction resistance generated by the retardation effect of a solid wall surface, so that the pressure of raw water discharged out of a cylinder body is often smaller than that of concentrated brine entering the cylinder body, namely, the pressure conversion loss exists, and the pressure supplement needs to be carried out on the raw water through a booster pump with higher lift and higher power. In the operation process of the water pressure cylinder type energy conversion device, after high-flow high-pressure strong brine is filled into the water pressure cylinder, raw water in the water pressure cylinder is quickly boosted to cause the check valve at the raw water inlet end to be quickly closed, so that the valve plate and the valve body are instantaneously knocked, and the service life of the check valve is greatly shortened through frequent instantaneous knocking. After energy conversion is accomplished, the switching-over device of adjustment cylinder body strong brine one end, the strong brine that has residual pressure intensity is discharged from the cylinder body, and the large-traffic residual pressure strong brine of discharged can produce the interface water hammer with low pressure strong brine contact in the twinkling of an eye and lead to the switching-over device to vibrate the noise that produces frequently, seriously influences the life of switching-over device and whole energy conversion device's safety in utilization.

Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.

Disclosure of Invention

The invention aims to provide a high-saline water energy conversion device to at least solve the problems that the service life of a valve body is influenced and noise is generated due to the fact that the current high-saline water energy conversion pressure loss is large and the valve body is impacted greatly due to sudden change of fluid pressure. In order to achieve the above purpose, the invention provides the following technical scheme:

the invention provides a high-saline water energy conversion device which is characterized by comprising a hydraulic cylinder, wherein the hydraulic cylinder comprises a hydraulic cylinder body and a hydraulic cylinder piston; the hydraulic cylinder piston is arranged in the hydraulic cylinder body and reciprocates in the hydraulic cylinder body, a raw water inlet is formed in one end of the hydraulic cylinder, a high-pressure strong brine inlet is formed in the other end of the hydraulic cylinder, the raw water and the high-pressure strong brine in the hydraulic cylinder are positioned on two sides of the hydraulic cylinder piston, and the high-pressure strong brine pushes the hydraulic cylinder piston to move to the raw water side; a hydraulic cylinder piston guide rod is arranged on the hydraulic cylinder piston, one end of the hydraulic cylinder piston guide rod is connected with the end surface of the hydraulic cylinder piston close to the raw water inlet of the hydraulic cylinder, the other end of the hydraulic cylinder piston guide rod extends out of one end of the hydraulic cylinder body, and the hydraulic cylinder piston guide rod freely stretches and retracts in the hydraulic cylinder body along with the movement of the hydraulic cylinder piston; the area of one side of the hydraulic cylinder piston, which is connected with the hydraulic cylinder piston guide rod and is contacted with raw water, is smaller than the area of the other side of the hydraulic cylinder piston, which is contacted with high-pressure strong brine, and the high-pressure strong brine pushes the hydraulic cylinder piston to move towards the raw water inlet direction of the hydraulic cylinder.

According to the above high brine energy conversion device, preferably, the hydraulic cylinder further comprises: the sealing baffle is arranged at an opening at one end of the hydraulic cylinder body, a sealing hole is formed in the middle of the sealing baffle, the other end of the hydraulic cylinder piston guide rod penetrates through the sealing hole to extend out of the hydraulic cylinder body, and the hydraulic cylinder piston guide rod is in sealing fit with the sealing hole; the guide baffle plate and the sealing baffle plate are arranged at intervals, a guide hole is formed in the guide baffle plate, and the hydraulic cylinder piston guide rod sequentially penetrates through the sealing hole and the guide hole and reciprocates under the guide of the guide baffle plate.

According to the above high brine energy conversion device, preferably, the hydraulic cylinder further comprises: the end part pore plate is arranged at one end of the hydraulic cylinder and arranged at one end of the hydraulic cylinder body along the extending direction of the hydraulic cylinder piston guide rod, the end part pore plate is connected with the guide baffle plate through a protective cover, the protective cover is arranged in the circumferential direction of the motion track of the hydraulic cylinder piston guide rod, the movement of the hydraulic cylinder piston guide rod is prevented from being influenced by the outside, and a hole is arranged on the end part pore plate and is communicated with the space air pressure and the external air pressure between the guide baffle plate and the end part pore plate.

According to the high-saline water energy conversion device, as a preferred scheme, the number of the hydraulic cylinders is two, namely an A hydraulic cylinder and a B hydraulic cylinder, one end of each of the two hydraulic cylinders is provided with a check valve group, the other end of each of the two hydraulic cylinders is connected with a reversing device, and the reversing device adjusts the in-out time of strong brine in the two hydraulic cylinders, so that at least one hydraulic cylinder piston is ensured to move towards one end of the hydraulic cylinder body at any time.

According to the high-salt water energy conversion device, as a preferred scheme, the check valve group comprises a low-pressure water inlet check valve and a high-pressure water outlet check valve, the check valve group is connected with the hydraulic cylinder body, and raw water supplies low-pressure raw water into the hydraulic cylinder body through the low-pressure water inlet check valve; the high-pressure water outlet check valve discharges high-pressure raw water to the outside of the hydraulic cylinder body.

According to foretell high salt water energy conversion device, as preferred scheme, the check valve group still includes the honeycomb duct, the honeycomb duct sets up on the sealing baffle, high pressure goes out water check valve with the low pressure check valve of intaking passes through respectively the honeycomb duct with the inside intercommunication of water pressure cylinder body.

According to the high-salt water energy conversion device, as a preferred scheme, the reversing device comprises a reversing cylinder body, a reversing piston group, an A communicating pipe, a B communicating pipe, a high-pressure liquid inlet, an A low-pressure liquid outlet, a B low-pressure liquid outlet and an actuating mechanism; one end of the high-pressure liquid inlet, one end of the communicating pipe A and one end of the communicating pipe B are respectively arranged on the side wall of the reversing cylinder body and are communicated with the interior of the reversing cylinder body; the other end of the hydraulic cylinder A is communicated with a liquid supply device, the other end of the hydraulic cylinder A and the other end of the hydraulic cylinder B respectively; along the length direction of the reversing cylinder body, the communicating pipe A and the communicating pipe B are respectively arranged on two sides of the high-pressure liquid inlet; the reversing piston group is arranged in the reversing cylinder body and driven by the actuating mechanism to reciprocate along the reversing cylinder body, the reversing piston group comprises a reversing piston A, a reversing piston B and a piston connecting rod, and the reversing piston A and the reversing piston B are connected through the piston connecting rod; along the length direction of the reversing cylinder body, the length of the reversing piston A is smaller than the distance between the left edge of the pipe orifice of the communicating pipe A and the right edge of the pipe orifice of the high-pressure liquid inlet; the length of the reversing piston B is smaller than the distance between the right edge of the pipe orifice of the communicating pipe B and the left edge of the pipe orifice of the high-pressure liquid inlet; the low-pressure liquid outlet A and the low-pressure liquid outlet B are respectively arranged at two ends of the reversing cylinder body.

According to the above high brine energy conversion device, preferably, the reversing device further comprises a pressure rising pipe, one end of the pressure boosting pipe is communicated with the side wall of the reversing cylinder body, the other end of the pressure boosting pipe is communicated with the other end of the hydraulic cylinder, the number of the booster pipes is two, the booster pipes are respectively an A booster pipe and a B booster pipe, the A booster pipe is connected with the A hydraulic cylinder, the B booster pipe is connected with the B hydraulic cylinder, along the length direction of the reversing cylinder body, the connecting point of the A boosting pipe and the reversing cylinder body is positioned between the A communicating pipe and the high-pressure liquid inlet, the connecting point of the B boosting pipe and the reversing cylinder body is positioned between the B communicating pipe and the high-pressure liquid inlet and along the length direction of the reversing cylinder body, the length of the reversing piston A is smaller than or equal to the distance between the left edge of the pipe orifice of the pressure boosting pipe A and the right edge of the pipe orifice of the high-pressure liquid inlet; the length of the reversing piston B is less than or equal to the distance between the right edge of the pipe orifice of the booster pipe B and the left edge of the pipe orifice of the high-pressure liquid inlet; the water inflow of the pressure rising pipe A is 2% -8% of that of the communicating pipe A, and the water inflow of the pressure rising pipe B is 2% -8% of that of the communicating pipe B.

According to the above high brine energy conversion device, preferably, the reversing device further comprises a pressure relief pipe, one end of the pressure relief pipe is communicated with the side wall of the reversing cylinder body, the other end of the pressure relief pipe is communicated with the other end of the hydraulic cylinder, the number of the pressure relief pipes is two, the two pressure relief pipes are respectively an A pressure relief pipe and a B pressure relief pipe, the A pressure relief pipe is connected with the A hydraulic cylinder, the B pressure relief pipe is connected with the B hydraulic cylinder, the water yield of the A pressure relief pipe is 2-8% of that of the A communicating pipe, the water yield of the B pressure relief pipe is 2-8% of that of the B communicating pipe, along the length direction of the reversing cylinder body, the connection point of the A pressure relief pipe and the reversing cylinder body is located on the right side of the A communicating pipe, and the connection point of the B pressure relief pipe and the reversing cylinder body is located on the left side of the B communicating pipe.

According to the high-salt water energy conversion device, as a preferable scheme, the reversing device further comprises end baffles, the two end baffles are respectively sealed and arranged at openings at two ends of the reversing cylinder body, through holes are formed in the end baffles, piston rods are arranged on the reversing piston A and the reversing piston B, the piston rods penetrate through the corresponding through holes and extend out of the reversing cylinder body, and the executing mechanism is connected with one of the piston rods and drives the reversing piston group to reciprocate along the reversing cylinder body.

Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:

1. the two sides of a hydraulic cylinder piston in the hydraulic cylinder energy conversion device are designed to have different water bearing surface areas, so that the contact area of a high-pressure water outlet side and raw water is smaller than the contact area of a high-pressure water inlet side and high-pressure strong brine, the water outlet pressure of the high-pressure raw water is greater than the water inlet pressure of the high-pressure strong brine, the lift of a booster pump connected with a high-pressure water outlet pipeline of the device is effectively reduced, and the construction cost and the running cost of a system are reduced;

2. a pressure boosting pipe is arranged in the reversing device, so that the closing of the low-pressure water inlet check valve is in a slow closing state, the problem of rapid knocking of a valve plate and a valve body of the check valve is effectively avoided, and the service life of the check valve is prolonged;

3. the 'pressure relief pipe' is arranged in the reversing device, so that the problem of interface water hammer when high-flow high-pressure strong brine and low-pressure strong brine are instantly contacted is avoided, and the problem of vibration of the reversing device is avoided;

4. the reversing device of the energy conversion device can realize high-pressure uninterrupted flow, so that high-pressure effluent water flow output from the hydraulic cylinder is stable, and continuous supply of high-pressure raw water at the water inlet of the booster pump is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:

FIG. 1 is a schematic structural diagram of an energy conversion device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a reversing device according to an embodiment of the present invention;

FIG. 3 is a first schematic diagram illustrating an operation position of a reversing device according to an embodiment of the present invention;

FIG. 4 is a second schematic diagram of the operation position of the reversing device according to the embodiment of the invention;

FIG. 5 is a third schematic view of the operation position of the reversing device according to the embodiment of the invention;

FIG. 6 is a fourth schematic view of the reversing device according to the embodiment of the present invention;

FIG. 7 is a fifth schematic view of the operation position of the reversing device according to the embodiment of the invention;

FIG. 8 is a sixth schematic view of the reversing device in an operating position according to an embodiment of the present invention;

FIG. 9 is a seventh schematic view of the reversing device in an operating position according to the embodiment of the present invention;

fig. 10 is an eighth schematic view of the operation position of the reversing device according to the embodiment of the invention.

In the figure: 1. a, a low-pressure liquid outlet; 2. a high-pressure liquid inlet; 3. b, a low-pressure liquid outlet; 4. an actuator; 5. an end baffle; 6. a, a reversing piston; 7. a, a pressure relief pipe; 8. a communicating pipe; 9. a, a pressure boosting pipe; 10. a reversing cylinder body; 11. b, reversing a piston; 12. b, a pressure boosting pipe; 13. b, communicating a pipe; 14. b, a pressure relief pipe; 15. a piston rod; 16. a piston connecting rod; 17. a hydraulic cylinder flange; 18. a hydraulic cylinder piston; 19. a, a hydraulic cylinder; 20. a hydraulic cylinder piston guide rod; 21. sealing the baffle; 22. a flow guide pipe; 23. a high pressure water outlet check valve; 24. a low pressure water inlet check valve; 25. a guide baffle plate; 26. an end orifice plate; 28. a protective cover; 29. and B, a hydraulic cylinder.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

According to an embodiment of the present invention, as shown in fig. 1 to 2, the present invention provides a high-salinity water energy conversion device, the energy conversion device includes a hydraulic cylinder, the hydraulic cylinder includes a hydraulic cylinder body and a hydraulic cylinder piston, the hydraulic cylinder piston is disposed in the hydraulic cylinder body and reciprocates in the hydraulic cylinder body, one end of the hydraulic cylinder is provided with a raw water inlet, the other end of the hydraulic cylinder is provided with a high-pressure concentrated brine inlet, the raw water and the high-pressure concentrated brine in the hydraulic cylinder are disposed at two sides of the hydraulic cylinder piston 18, and the high-pressure concentrated brine pushes the hydraulic cylinder piston 18 to move to the raw water side.

The hydraulic cylinder piston 18 is provided with a hydraulic cylinder piston guide rod 20, one end of the hydraulic cylinder piston guide rod 20 is connected with the end face of the hydraulic cylinder piston 18 close to the raw water inlet of the hydraulic cylinder, the other end of the hydraulic cylinder piston guide rod extends out of one end of the hydraulic cylinder body, the hydraulic cylinder piston guide rod 20 freely stretches in the hydraulic cylinder body along with the movement of the hydraulic cylinder piston 18, and the hydraulic cylinder piston guide rod 20 is in sealing fit with the sealing baffle plate 21.

The area of the hydraulic cylinder piston 18 contacting the raw water on one side connected with the hydraulic cylinder piston guide rod 20 is smaller than the area of the hydraulic cylinder piston 18 contacting the high-pressure strong brine on the other side, when the high-pressure strong brine is filled into the hydraulic cylinder, pressure difference exists on two sides of the hydraulic cylinder piston 18, and the high-pressure strong brine pushes the hydraulic cylinder piston 18 to move towards the raw water inlet direction of the hydraulic cylinder. The hydraulic cylinder piston guide rod 20 is arranged in the hydraulic cylinder, so that the bearing area of the hydraulic cylinder piston 18 and high-pressure concentrated brine is larger than that of the hydraulic cylinder piston 18 and low-pressure raw water, when the hydraulic cylinder piston 18 moves at a constant speed, the pressure of the raw water is higher than that of the high-pressure concentrated brine, and high-pressure loss is avoided, and the pressure of the pressurized high-pressure raw water is increased to the greatest extent by arranging the hydraulic cylinder piston guide rod 20.

Further, the hydraulic cylinder still includes: the sealing baffle 21 is arranged at an opening at one end of the hydraulic cylinder body, a sealing hole is formed in the middle of the sealing baffle 21, the other end of the guide rod of the hydraulic cylinder piston 18 penetrates through the sealing hole to extend out of the hydraulic cylinder body, and the guide rod 20 of the hydraulic cylinder piston is in sealing fit with the sealing hole; the guide baffle 25, the guide baffle 25 and the seal baffle 21 are arranged at intervals, the guide baffle 25 is provided with a guide hole, the hydraulic cylinder piston guide rod 20 passes through the seal hole and the guide hole in sequence and moves to and fro under the guide of the guide baffle 25; the end portion pore plate 26, the end portion pore plate 26 is arranged at one end of the hydraulic cylinder body along the extending direction of the hydraulic cylinder piston guide rod 20, the end portion pore plate 26 is connected with the guide baffle plate 25 through the protective cover 28, the protective cover 28 is arranged in the circumferential direction of the movement track of the hydraulic cylinder piston guide rod 20, the movement of the hydraulic cylinder piston guide rod 20 is prevented from being influenced by the outside, a hole is formed in the end portion pore plate 26, the space air pressure and the external air pressure between the guide baffle plate 25 and the end portion pore plate 26 are communicated, the atmospheric pressure between the two is kept consistent, and the reciprocating motion of the hydraulic cylinder piston guide rod 20 in the hydraulic cylinder body. In the embodiment of the present invention, the protective cover 28 is cylindrical, the end of the protective cover 28 is provided with the end hole plate 26, and the end hole plate 26 is provided with a through hole, so as to prevent the movement of the hydraulic cylinder piston 18 from being influenced by the sealing in the protective cover 28.

Furthermore, the number of the hydraulic cylinders of the high-saline water energy conversion device is two, namely an A hydraulic cylinder 19 and a B hydraulic cylinder 29, one end of each of the two hydraulic cylinders is provided with a check valve group, the other end of each of the two hydraulic cylinders is connected with a reversing device, and the reversing device adjusts the in-out time of strong saline water in the two hydraulic cylinders, so that at least one hydraulic cylinder piston 18 is ensured to move towards one end of the hydraulic cylinder body at any time. Realizes 'high-pressure uninterrupted flow', and avoids the influence of intermittently providing high-pressure raw water on the stable operation of the device.

Further, raw water in the hydraulic cylinder is injected into the hydraulic cylinder through a check valve group, the check valve group is connected with the hydraulic cylinder body, the check valve group comprises a low-pressure water inlet check valve 24 and a high-pressure water outlet check valve 23, and the raw water supplies low-pressure raw water into the hydraulic cylinder body through the low-pressure water inlet check valve 24; the high-pressure water outlet check valve 23 discharges high-pressure raw water to the outside of the hydraulic cylinder body; the check valve group further comprises a guide pipe 22, the guide pipe 22 is arranged on the sealing baffle plate 21, and the high-pressure water outlet check valve 23 and the low-pressure water inlet check valve 24 are respectively communicated with the inside of the hydraulic cylinder body through the guide pipe 22.

When the reversing device is used, raw water enters the hydraulic cylinder through the low-pressure water inlet check valve 24, the piston of the hydraulic cylinder is pushed to move to one end of the reversing device, and the interior of the hydraulic cylinder body is filled with the low-pressure raw water; then adjust the switching-over device, strong brine gets into inside the water pressure cylinder body through the switching-over device, because the pressure of strong brine is greater than the pressure of raw water, strong brine promotes water pressure jar piston 18 and moves to check valve group one end, under the promotion of strong brine, the low pressure raw water pressure increase in the water pressure jar becomes high-pressure raw water, because the raw water pressure is greater than the raw water pressure of raw water entrance in the water pressure jar this moment, low pressure water inlet check valve 24 closes, the high-pressure raw water after the pressure boost discharges to the booster pump through high pressure play water check valve 23, because the raw water that gets into the booster pump has had certain pressure, the booster pump just satisfies the pressure demand for a small amount of pressure boost again, consequently greatly reduced the lift and the power demand of booster pump, reduced the use cost and the.

Further, strong brine of the hydraulic cylinder is injected into the hydraulic cylinder through a reversing device, and the reversing device comprises a reversing cylinder body 10, a reversing piston group, an A communicating pipe 8, a B communicating pipe 13, a high-pressure liquid inlet 2, an A low-pressure liquid outlet 1, a B low-pressure liquid outlet 3 and an actuating mechanism 4; one ends of the high-pressure liquid inlet 2, the A communicating pipe 8 and the B communicating pipe 13 are respectively arranged on the side wall of the reversing cylinder body 10 and are communicated with the inside of the reversing cylinder body 10; strong brine is injected into the other end of the high-pressure liquid inlet 2, a hydraulic flange 17 is arranged at one end of a hydraulic cylinder body 10, the other end of the A communicating pipe 8 is communicated with the hydraulic cylinder flange 17, and the other end of the B communicating pipe 13 is communicated with the hydraulic cylinder flange 17; along the length direction of the reversing cylinder body, the A communicating pipe 8 is arranged on the right side of the high-pressure liquid inlet 2, and the B communicating pipe 13 is arranged on the left side of the high-pressure liquid inlet 2. As shown in fig. 2, in the embodiment of the present invention, in order to facilitate installation of the equipment and to prevent the water flow direction from being greatly changed, the communication pipe a 8 and the high-pressure liquid inlet 2 are respectively located on opposite side walls of the reversing cylinder, and the communication pipe B13 is located on the same side as the communication pipe a 8.

The reversing piston group is arranged in the reversing cylinder 10 and driven by the actuating mechanism 4 to reciprocate along the reversing cylinder 10, the reversing piston group comprises a reversing piston A6, a reversing piston B11 and a piston connecting rod 16, and the reversing piston A6 is connected with the reversing piston B11 through the piston connecting rod 16; along the length direction of the reversing cylinder 10, the length of the reversing piston A6 is smaller than the distance between the left edge of the pipe orifice of the communicating pipe A8 and the right edge of the pipe orifice of the high-pressure liquid inlet 2; the length of the reversing piston 11B is smaller than the distance between the right edge of the pipe orifice of the communicating pipe 13B and the left edge of the pipe orifice 2 of the high-pressure liquid inlet; the A low-pressure liquid discharge port 1 and the B low-pressure liquid discharge port 3 are respectively arranged at two ends of the reversing cylinder body 10. In other embodiments, the length of the reversing piston 6 a may be equal to the distance between the left edge of the nozzle of the communicating tube 8 a and the right edge of the nozzle of the high-pressure liquid inlet 2; the length of the B reversing piston 11 can be equal to the distance between the right edge of the nozzle of the B communicating pipe 13 and the left edge of the nozzle of the high-pressure liquid inlet 2.

Further, the reversing device further comprises a boosting pipe, one end of the boosting pipe is communicated with the side wall of the reversing cylinder body, the other end of the boosting pipe is communicated with the other end of the hydraulic cylinder, the number of the boosting pipes is two, namely an A boosting pipe 9 and a B boosting pipe 12, the A boosting pipe 9 is connected with an A hydraulic cylinder 19, the B boosting pipe 12 is connected with a B hydraulic cylinder 29, along the length direction of the reversing cylinder body 10, the connection point of the A boosting pipe 9 and the reversing cylinder body 10 is located between an A communicating pipe 8 and the high-pressure liquid inlet 2, and the connection point of the B boosting pipe 12 and the reversing cylinder body 10 is located between a B communicating pipe 13 and the high-. Along the length direction of the reversing cylinder body, the length of the reversing piston A6 is smaller than or equal to the distance between the left edge of the pipe orifice of the boosting pipe A9 and the right edge of the pipe orifice of the high-pressure liquid inlet 2; the length of the B reversing piston 11 is less than or equal to the distance between the right edge of the orifice of the B boosting pipe 12 and the left edge of the orifice of the high-pressure liquid inlet 2; the water inflow of the A booster pipe 9 is 2% -8% of that of the A communicating pipe 8, and the water inflow of the B booster pipe 12 is 2% -8% of that of the B communicating pipe 13.

Furthermore, the reversing device further comprises two pressure relief pipes, one end of each pressure relief pipe is communicated with the side wall of the reversing cylinder body 10, the other end of each pressure relief pipe is communicated with the other end of the hydraulic cylinder, the number of the pressure relief pipes is two, namely an A pressure relief pipe 7 and a B pressure relief pipe 14, the A pressure relief pipe 7 is connected with an A hydraulic cylinder 19, the B pressure relief pipe 14 is connected with a B hydraulic cylinder 29, the water yield of the A pressure relief pipe 7 is 2% -8% of the water yield of the A communicating pipe 8, and the water yield of the B pressure relief pipe 14 is 2% -8% of the water yield of the B communicating pipe 13. Along the length direction of the reversing cylinder body 10, the connection point of the A pressure relief pipe 7 and the reversing cylinder body 10 is positioned on the right side of the A communicating pipe 8, and the connection point of the B pressure relief pipe 14 and the reversing cylinder body 10 is respectively positioned on the left side of the B communicating pipe 13.

Furthermore, the reversing device further comprises end baffles 5, the two end baffles 5 are respectively sealed and arranged at openings at two ends of the reversing cylinder body 10, through holes are formed in the end baffles 5, piston rods 15 are arranged on the reversing piston 6A and the reversing piston 11B, the piston rods 15 penetrate through the corresponding through holes and extend out of the reversing cylinder body, and the executing mechanism 4 is connected with one of the piston rods 15 and drives the reversing piston group to reciprocate along the reversing cylinder body.

In the embodiment of the invention, the length of the reversing piston A6 is not less than the distance between the left edge of the orifice of the pressure boosting pipe A9 and the right edge of the orifice of the pressure relief pipe A7; the length of piston connecting rod 16 is equal to the distance between the center line of communication pipe A8 and the center line of communication pipe B13; along the length direction of the reversing cylinder body 10, the A communicating pipe 8 and the B communicating pipe 13 are symmetrically arranged relative to the high-pressure liquid inlet 2, the A boosting pipe 9 and the B boosting pipe 12 are symmetrically arranged relative to the high-pressure liquid inlet 2, and the A pressure relief pipe 7 and the B pressure relief pipe 14 are symmetrically arranged relative to the high-pressure liquid inlet 2.

The following explains the reversing operation of the hydraulic cylinder energy conversion device with reference to fig. 3 to 10:

s001, in a low-pressure filling stage, as shown in figure 3, in this state, high-pressure strong brine enters a B hydraulic cylinder 29 through a reversing device, a hydraulic cylinder piston 18 and a hydraulic cylinder piston guide rod 20 in the B hydraulic cylinder 29 are pushed to move towards one end of a check valve group, so that low-pressure raw water obtains energy and is changed into high-pressure raw water, and the high-pressure raw water enters a booster pump through a high-pressure water outlet check valve 23 and finally enters a reverse osmosis device; at this time, the low pressure inlet check valve in the B hydraulic cylinder 29 is in a closed state, and the high pressure outlet check valve is in an open/close state. Meanwhile, low-pressure raw water from a raw water supply pump is filled into the A hydraulic cylinder 19, a hydraulic cylinder piston 18 and a hydraulic cylinder piston guide rod 20 in the A hydraulic cylinder 19 are pushed to move towards one end of the reversing device, and low-pressure concentrated brine is discharged from the A low-pressure liquid discharge port 1 of the reversing device. At this time, the low pressure inlet check valve in the cylinder 19 a is in an open state, and the high pressure outlet check valve is in a closed state.

S002: as shown in figure 4, under the drive of the actuating mechanism 4, the A reversing piston 6 and the B reversing piston 11 move rightwards, when the right edge of the A reversing piston 6 reaches the area between E and F, the low-pressure concentrated brine water flow in the A pressure boosting pipe 9 and the A communicating pipe 8 is closed at the moment, but the water flow from the A hydraulic cylinder 19 is not completely cut off, the A pressure relief pipe 7 can still discharge the low-pressure concentrated brine water flow at a tiny flow rate, and due to the flow guiding effect of the A pressure relief pipe 7, the water hammer when the water flow is instantly cut off is avoided. Thereby avoiding the vibration of the reversing device caused by the water hammer.

S003: in the "low-pressure boosting" stage, as shown in fig. 5, the B-directional piston 11 and the a-directional piston 6 continue to move rightward, when the left edge of the a-directional piston 6 reaches the region D-E, the orifice of the a-directional booster pipe 9 is in an open state, because the pipe diameter of the a-directional booster pipe 9 is small, high-pressure brine enters the a-directional hydraulic cylinder 19 through the a-directional booster pipe 9 at a very small flow rate, the a-directional hydraulic cylinder 19 is about to start the "pre-boosting" process, the low-pressure raw water pressure in the a-directional hydraulic cylinder 19 rises, and at this time, the low-pressure water inlet check valve 24 of the a-directional hydraulic cylinder 19 is in a "slow" automatic closing process. Thereby avoiding the damage of instantaneous knocking of the valve plate and the valve body of the low-pressure water inlet check valve 24 and greatly prolonging the service life of the low-pressure water inlet check valve 24.

Meanwhile, when the right edge of the B reversing piston 11 reaches the area from A to B, the water amount of the high-pressure concentrated brine entering the B hydraulic cylinder 29 from the high-pressure liquid inlet 2 begins to decrease (the B pressure relief pipe 14 is blocked, the high-pressure concentrated brine is changed from the original B pressure increasing pipe 12, the B communicating pipe 13 and the B pressure relief pipe 14 which simultaneously transmit the high-pressure concentrated brine into the B hydraulic cylinder 29 to the original B pressure increasing pipe 12 and the B communicating pipe 13 which simultaneously transmit the high-pressure concentrated brine into the B hydraulic cylinder 29), and then the high-pressure concentrated brine enters the A hydraulic cylinder 19.

S004: in the "high-pressure overlapping" stage, as shown in fig. 6, the B-directional piston 11 and the a-directional piston 6 continue to move rightward, when the right edge of the B-directional piston 11 reaches the left edge of the orifice of the B-directional communication pipe 13, the left edge of the a-directional piston 6 just reaches the left edge of the orifice of the a-directional communication pipe 8, and then, as the directional piston continues to move rightward, the amount of the high-pressure brine entering the B-directional communication pipe 13 gradually decreases, and the amount of the high-pressure brine entering the a-directional communication pipe 8 gradually increases, so that the B-hydraulic cylinder 29 and the a-hydraulic cylinder 19 are both in the process of pushing the hydraulic cylinder piston 18 to move toward the check valve group side by high-pressure water intake, and at the same time, the high-pressure check valves of the B-hydraulic cylinder 29 and the a-hydraulic cylinder 19 are both in the state of outputting high-pressure raw water, and the design of the "high, thereby realizing the function of 'high-voltage uninterrupted flow'. In the process, the low-pressure water inlet stop valves of the B hydraulic cylinder 29 and the A hydraulic cylinder 19 are both in a closed state.

S005: in the high-pressure isolation stage, as shown in fig. 7, the B reversing piston 11 and the a reversing piston 6 continue to move rightward, when the right edge of the B reversing piston 11 exceeds the right edge of the orifice of the B boosting pipe 12, the B hydraulic cylinder 29 stops entering high-pressure strong brine, the high-pressure outlet check valve of the B hydraulic cylinder 29 is in a closed state under the action of its own spring, and the low-pressure inlet water stop valve of the B hydraulic cylinder 29 is continuously in a closed state. Meanwhile, the pressure boosting pipe A9, the communicating pipe A8 and the pressure relief pipe A7 simultaneously transmit high-pressure strong brine into the hydraulic cylinder A19, and the states of the hydraulic cylinder piston 18, the high-pressure water outlet check valve 23 and the low-pressure water inlet check valve 24 of the hydraulic cylinder A19 are the same as S004.

S006: in the stage of high-pressure relief, as shown in fig. 8, the B reversing piston 11 and the a reversing piston 6 continue to move rightwards, when the left edge of the B reversing piston 11 reaches an area from a to B, the pipe orifice of the B pressure release pipe 14 is in an open state, high-pressure concentrated brine in the B hydraulic cylinder 29 is relieved in pressure through the B pressure release pipe 14, and meanwhile, because the pipe diameter of the B pressure release pipe 14 is small and no large-flow high-pressure concentrated brine flows out, the problem of water hammer at the interface when the large-flow high-pressure concentrated brine is in contact with low-pressure concentrated brine in the B low-pressure liquid discharge port 3 is avoided. Thereby avoiding the vibration of the reversing device caused by the water hammer. The high-pressure water outlet check valve 23 and the low-pressure water inlet check valve 24 of the B hydraulic cylinder 29 are still in a closed state.

S007: in the "low pressure filling" stage, as shown in fig. 9, the B reversing piston 11 and the a reversing piston 6 continue to move rightward, when the left edge of the B reversing piston 11 reaches the region from B to C, the orifice of the B communicating tube 13 is opened, the low pressure water inlet check valve 24 of the B hydraulic cylinder 29 is opened, the high pressure water outlet check valve 23 is in a closed state, the low pressure raw water from the raw water supply pump enters the B hydraulic cylinder 29 through the low pressure water inlet check valve 24, the hydraulic cylinder piston 18 and the hydraulic cylinder piston guide rod 20 in the B hydraulic cylinder 29 move to one end of the reversing device under the pushing of the low pressure raw water, and the decompressed high pressure brine enters the reversing device from the B hydraulic cylinder 29 through the B communicating tube 13 and is discharged from the B low pressure liquid discharge port 3 of the reversing device. At the same time, the states of the respective members in the a hydraulic cylinder 19 are the same as S006.

S008: as shown in fig. 10, the B reversing piston 11 and the a reversing piston 6 continue to move rightward, when the left edge of the B reversing piston 11 reaches the right edge of the orifice of the B boosting pipe 12, the actuator 4 stops driving the B reversing piston 11 and the a reversing piston 6, and the B reversing piston 11 stops at the area from the right edge of the orifice of the B boosting pipe 12 to the left edge of the high-pressure liquid inlet 2; the A reversing piston 6 is just stopped at the right edge of the A pressure relief pipe 7 to the left edge area of the A low-pressure liquid outlet 1.

Thus, one cycle of commutation is completed. During the next period of reversing action, under the driving of the executing mechanism 4, the reversing piston B11 and the reversing piston A6 move leftwards, and the stages of low-pressure boosting, high-pressure overlapping, high-pressure isolating, high-pressure relieving and low-pressure filling are presented in sequence.

In summary, in the high-salinity water energy conversion device provided by the invention, the two sides of the hydraulic cylinder piston in the hydraulic cylinder energy conversion device are designed to have different water bearing surface areas, so that the contact area of the high-pressure water outlet side and the raw water is smaller than the contact area of the high-pressure water inlet side and the high-pressure strong brine, the water outlet pressure of the high-pressure raw water is larger than the water inlet pressure of the high-pressure strong brine, the lift of the booster pump connected with the high-pressure water outlet pipeline of the device is effectively reduced, and the construction cost and the operation cost of the system are reduced. Be provided with "pressure-rising pipe" in the switching-over device to make the closing of low-pressure admission line check valve present "slow-closure" state, effectively avoided the rapid problem of knocking of check valve plate and valve body, prolong the life of check valve. The 'pressure relief pipe' is arranged in the reversing device, so that the problem of interface water hammer when large-flow high-pressure strong brine and low-pressure strong brine are in instant contact is avoided, and the problem of vibration of the reversing device is avoided. The reversing device of the energy conversion device can realize high-pressure uninterrupted flow, so that high-pressure effluent water flow output from the hydraulic cylinder is stable, and continuous supply of high-pressure raw water at the water inlet of the booster pump is ensured.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.