CN119163577A - Plunger pump cooperative pressurizing device - Google Patents
Plunger pump cooperative pressurizing device Download PDFInfo
- Publication number
- CN119163577A CN119163577A CN202310727040.5A CN202310727040A CN119163577A CN 119163577 A CN119163577 A CN 119163577A CN 202310727040 A CN202310727040 A CN 202310727040A CN 119163577 A CN119163577 A CN 119163577A
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- CN
- China
- Prior art keywords
- plunger pump
- rack
- pressurizing
- piston rod
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Reciprocating Pumps (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a plunger pump collaborative pressurizing device which comprises a first plunger pump, a second plunger pump and a motor, wherein a piston rod of the first plunger pump and a piston rod of the second plunger pump are driven by the motor through a gear rack mechanism or a screw rod mechanism, a rodless cavity of the first plunger pump and a rodless cavity of the second plunger pump are active pressurizing cavities, a rod cavity of the first plunger pump and a rod cavity of the second plunger pump are collaborative pressurizing cavities, a fluid inlet and a fluid outlet are formed in each of the active pressurizing cavities and the collaborative pressurizing cavities, and switching valves are arranged at the fluid inlet and the fluid outlet. The invention has small occupied area, simple structure, convenient carrying, transportation and use and expands the application range.
Description
Technical Field
The invention relates to a plunger pump cooperative pressurizing device, and belongs to the technical field of fluid pressurization.
Background
In modern industrial production, fluid such as liquid, gas, liquid-gas mixture and the like is often involved to be pressurized, and meanwhile, a large amount of fluid (including liquid, gas, liquid-gas mixture and the like) loaded with pressure energy can be often generated in a production link and directly discharged, so that energy is wasted.
Taking reverse osmosis seawater desalination as an example, reverse osmosis seawater desalination is one of the mainstream technologies of current seawater desalination, and the method uses a reverse osmosis membrane to realize separation of ions and water molecules contained in seawater, so that the pressure of seawater entering the reverse osmosis membrane is required to be higher than the osmotic pressure (usually between 4 and 6 MPa) of the reverse osmosis membrane, and the pressure of concentrated seawater discharged after fresh water is produced by filtration of the reverse osmosis membrane is still up to 4 to 6MPa, so that the method contains extremely high potential energy, and if the seawater is directly discharged, extremely high energy waste is necessarily caused. In order to reduce energy consumption and also reduce the production cost of sea water desalination, a sea water desalination system adopting a reverse osmosis membrane method is generally provided with an energy recoverer for recovering potential energy of concentrated sea water.
The applicant searches and discovers that a sea water desalination system is disclosed in China patent with publication number CN105800734A, the system is used for recycling the residual pressure of concentrated water discharged by a reverse osmosis membrane by driving two groups of plunger pumps through a fan, but synchronous control of the two groups of plunger pumps is very difficult, the traditional hydraulic system has a complex structure and is difficult to completely prevent hydraulic oil from dripping, and after the synchronous completion of debugging, the traditional hydraulic system operates for a period of time, and the like, the phenomenon of asynchronous operation occurs, so that the fluctuation of water pressure is too large, and the reverse osmosis membrane is easy to damage, thereby reducing the production efficiency, the volume of a hydraulic pump is often large, the occupied space of equipment is not easy to reduce, and the hydraulic pump cannot be directly applied to other fields such as petroleum, chemical industry, food, marine biochemistry and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electric pressurizing plunger pump device with small occupied space and simple structure.
In order to solve the technical problems, one of the technical schemes provided by the invention is that the plunger pump collaborative pressurizing device comprises a first plunger pump, a second plunger pump and a motor, wherein a piston rod of the first plunger pump is connected with a first rack, a piston rod of the second plunger pump is connected with a second rack, the first rack, the second rack, the piston rod of the first plunger pump and the piston rod of the second plunger pump are parallel to each other, a driving gear matched with the first rack and the second rack is arranged on an output shaft of the motor, the driving gear is positioned between the first rack and the second rack, a rodless cavity of the first plunger pump and a rodless cavity of the second plunger pump are active pressurizing cavities, a rod cavity of the first plunger pump and a rod cavity of the second plunger pump are collaborative pressurizing cavities, fluid inlets and fluid outlets are arranged on the active pressurizing cavities and the collaborative pressurizing cavities, and switching valves are arranged at the fluid inlets and the fluid outlets.
In order to solve the technical problems, the second technical scheme is that the plunger pump collaborative pressurizing device comprises a first plunger pump, a second plunger pump, a motor and a screw rod mechanism, wherein a piston rod of the first plunger pump and a piston rod of the second plunger pump are connected with screw rods of the screw rod mechanism, the piston rod of the first plunger pump and the piston rod of the second plunger pump are parallel to each other, nuts of the screw rod mechanism are driven by the motor, a rodless cavity of the first plunger pump and a rodless cavity of the second plunger pump are active pressurizing cavities, a rod cavity of the first plunger pump and a rod cavity of the second plunger pump are collaborative pressurizing cavities, fluid inlets and fluid outlets are formed in the active pressurizing cavities and the collaborative pressurizing cavities, and switching valves are arranged at the fluid inlets and the fluid outlets.
When the hydraulic pump is used, the piston rods of the first plunger pump and the second plunger pump are driven by the motor, liquid to be pressurized is contained in the active pressurizing cavity, pressurized fluid is contained in the cooperative pressurizing cavity, and when the fluid in the active pressurizing cavity is pressurized, the pressurized fluid in the cooperative pressurizing cavity is pressurized in a cooperative mode through reasonably setting the on-off valve states of the fluid inlet and the fluid outlet, so that the additional energy of the pressurized fluid can be fully utilized, the energy utilization efficiency is improved, the energy consumption is reduced, and the obvious energy-saving and carbon-reduction effects are achieved. The detailed working process is described in the detailed description section.
The beneficial effects brought by the invention are as follows:
1) Compared with the plunger pump pressurizing device driven by hydraulic pressure in the prior art, the invention adopts the motor to drive the first plunger pump and the second plunger pump to work through the driving gear rack mechanism or the screw rod mechanism, and the structure of the gear rack mechanism or the screw rod mechanism is very compact, so that the invention greatly reduces the occupied space of the whole set of device on the premise of meeting the requirement of collaborative pressurization by pressure liquid, is convenient to carry, transport and use, expands the application range, can be installed on a small fishing boat, even on an unmanned waste island, solves the problems of fresh water taking and using of personnel, or is used in the fields requiring pressurized fluid such as petroleum, chemical industry, food, marine biochemistry and the like.
2) According to the invention, two groups of plunger pumps are driven by one motor, the rotating speed of the motor can be kept constant, so that the defect that the fluctuation of fluid pressure and flow is too large when the plunger pumps are hydraulically driven in the prior art can be avoided, and the flow and pressure stability of the output pressurized fluid are facilitated.
3) The invention does not need a hydraulic pump any more, thereby avoiding pollution caused by hydraulic oil leakage and protecting the environment.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a first embodiment of the present invention.
Fig. 2 is a schematic top view of fig. 1 (with the piping section omitted).
Fig. 3 is a schematic diagram of a second embodiment of the present invention.
The device comprises the following components of a first plunger pump, a second plunger pump, a first rack, a second rack, a driving gear, a first chute, a second chute, a first pin shaft, a second pin shaft, a motor, a first transmission gear, a second driving gear, a piston rod of the first plunger pump, a piston rod of the second plunger pump and a piston rod of the second plunger pump.
Detailed Description
Example 1
The embodiment relates to a plunger pump collaborative pressurizing device for sea water desalination, which comprises a first plunger pump 1, a second plunger pump 2 and a motor 10, wherein a piston rod of the first plunger pump 1 is connected with a first rack 3, a piston rod of the second plunger pump 2 is connected with a second rack 4, and the first rack 3, the second rack 4, the piston rod of the first plunger pump 1 and the piston rod of the second plunger pump 2 are parallel to each other.
As shown in fig. 1 and 2, the motor 10 drives a driving gear 5 matched with the first rack 3 and the second rack 4, the driving gear 5 is directly installed on an output shaft of the motor 10, or the motor 10 drives the driving gear 5 to rotate through a reduction gearbox, the driving gear 5 is positioned between the first rack 3 and the second rack 4, a rodless cavity of the first plunger pump 1 and a rodless cavity of the second plunger pump 2 are active pressurizing cavities, and a rod cavity of the first plunger pump 1 and a rod cavity of the second plunger pump 2 are cooperative pressurizing cavities. The motor 10 in this embodiment is preferably a servo motor 10.
The plunger pump device driven by the motor is used for sea water desalination, the working mode of the plunger pump device is similar to that of a plunger pump in CN105800734A, the difference is only that the driving mode and the arrangement mode of the plunger pump are different, and the working process is as follows:
As shown in fig. 1, a fluid inlet A1 and a fluid outlet B1 are formed in a rodless cavity of the first plunger pump, a fluid inlet A2 and a fluid outlet B2 are formed in the rodless cavity of the second plunger pump, a fluid inlet C1 and a fluid outlet D1 are formed in a rod cavity of the first plunger pump, a fluid inlet C2 and a fluid outlet D2 are formed in the rod cavity of the second plunger pump, the fluid inlet A1 and the fluid inlet A2 are connected with raw seawater, the fluid outlet B1 and the fluid outlet B2 are connected with a water inlet of a reverse osmosis membrane group, the fluid inlet C1 and the fluid inlet C2 are connected with a high-pressure concentrated seawater outlet of the reverse osmosis membrane group, the fluid outlet D1 and the fluid outlet D2 directly discharge the high-pressure concentrated seawater or directly discharge the high-pressure concentrated seawater, and switching valves are arranged at the fluid inlet and the fluid outlet.
When the first rack 3 moves upwards and the second rack 4 moves downwards, the fluid inlet A2, the fluid outlet B2, the fluid inlet C2 and the fluid outlet D1 are closed, the fluid inlet A2, the fluid outlet B1, the fluid inlet C1 and the fluid outlet D1 are opened, at the moment, high-pressure concentrated seawater enters a rod cavity of the first plunger pump, the high-pressure concentrated seawater and the motor 10 jointly drive the raw seawater in a rodless cavity of the first plunger pump to pressurize the raw seawater, so that the raw seawater enters a reverse osmosis membrane group to desalinate the seawater, the high-pressure concentrated seawater in the rod cavity of the second plunger pump is discharged, the raw seawater enters the rodless cavity of the second plunger pump, when the first rack 3 moves upwards and the second rack 4 moves downwards, the fluid inlet A2, the fluid outlet B1, the fluid inlet C1 and the fluid outlet D1 are closed, the fluid inlet A1, the fluid inlet B2 and the fluid outlet D1 are opened, at the moment, the high-pressure concentrated seawater enters the rod cavity of the second plunger pump, the high-pressure concentrated seawater enters the rod cavity of the first plunger pump, the high-pressure concentrated seawater and the motor 10 jointly drive the high-pressure concentrated seawater in the rod cavity of the first plunger pump to desalinate the raw seawater, so that the high-pressure concentrated seawater in the rod of the first plunger pump is discharged by the high-pressure concentrated seawater and the high-pressure pump. The circulating reciprocating motion can continuously carry out the seawater desalination, is beneficial to prolonging the service life of the reverse osmosis membrane group and ensures that the produced water is more stable.
The embodiment can be applied to the fields requiring pressurization such as petroleum, chemical industry, food, marine biochemistry and the like besides the sea water desalination, and can cooperatively pressurize the fluid to be pressurized (liquid, gas or liquid-gas mixture) in the active pressurizing cavity as long as stable high-pressure fluid can enter the cooperative pressurizing cavity, thereby fully utilizing the additional energy of the pressure fluid and improving the utilization efficiency of the energy.
Example two
The present embodiment is an improvement based on the first embodiment, and is different from the first embodiment in that, as shown in fig. 3, the piston rod of the first plunger pump 1 doubles as a first rack 3, and the piston rod of the second plunger pump 2 doubles as a second rack 4.
If the distance between the first rack 3 and the second rack 4 is too large, at this time, a first transmission gear 11 may be added between the driving gear 5 and the first rack 3, and a second transmission gear may be added between the driving gear 5 and the second rack 4.
Example III
The embodiment is different from the first embodiment in that the first plunger pump 1 and the second plunger pump 2 are not driven to act by using a gear-rack mechanism, the first plunger pump 1 and the second plunger pump 2 are driven to move by using a screw rod mechanism, the screw rod mechanism consists of a screw rod and a nut, a piston rod of the first plunger pump 1 and a piston rod of the second plunger pump 2 are connected with the screw rod of the screw rod mechanism, the piston rod of the first plunger pump 1 and the piston rod of the second plunger pump 2 are parallel, and the nut of the screw rod mechanism is driven by a motor 10.
The working process and the application field of the embodiment are basically the same as those of the first embodiment, and are not repeated.
Claims (6)
1. The plunger pump collaborative pressurizing device is characterized by comprising a first plunger pump, a second plunger pump and a motor, wherein a piston rod of the first plunger pump is connected with a first rack, a piston rod of the second plunger pump is connected with a second rack, the first rack, the second rack, the piston rod of the first plunger pump and the piston rod of the second plunger pump are parallel to each other, a driving gear matched with the first rack and the second rack is arranged on an output shaft of the motor, and the driving gear is positioned between the first rack and the second rack;
The rodless cavity of the first plunger pump and the rodless cavity of the second plunger pump are active pressurizing cavities, and the rod cavity of the first plunger pump and the rod cavity of the second plunger pump are collaborative pressurizing cavities;
The active pressurizing cavity and the collaborative pressurizing cavity are respectively provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are respectively provided with a switch valve.
2. The plunger pump collaborative pressurizing device according to claim 1, wherein the motor is a servo motor.
3. The plunger pump co-pressurizing apparatus according to claim 1 or 2, wherein the driving gear is directly mounted on an output shaft of the motor.
4. The plunger pump co-pressurizing device according to claim 1 or 2, wherein the motor drives the driving gear to rotate through the reduction gearbox.
5. The plunger pump co-pressurizing device according to claim 1 or 2, wherein a piston rod of the first plunger pump doubles as a first rack, and a piston rod of the second plunger pump doubles as a second rack.
6. A plunger pump collaborative pressurizing device is characterized by comprising a first plunger pump, a second plunger pump, a motor and a screw rod mechanism, wherein a piston rod of the first plunger pump and a piston rod of the second plunger pump are connected with a screw rod of the screw rod mechanism, the piston rod of the first plunger pump and the piston rod of the second plunger pump are parallel to each other, nuts of the screw rod mechanism are driven by the motor, a rodless cavity of the first plunger pump and a rodless cavity of the second plunger pump are active pressurizing cavities, a rod cavity of the first plunger pump and a rod cavity of the second plunger pump are collaborative pressurizing cavities, a fluid inlet and a fluid outlet are formed in the active pressurizing cavities and the collaborative pressurizing cavities, and switching valves are arranged at the fluid inlet and the fluid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310727040.5A CN119163577A (en) | 2023-06-19 | 2023-06-19 | Plunger pump cooperative pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310727040.5A CN119163577A (en) | 2023-06-19 | 2023-06-19 | Plunger pump cooperative pressurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119163577A true CN119163577A (en) | 2024-12-20 |
Family
ID=93881329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310727040.5A Pending CN119163577A (en) | 2023-06-19 | 2023-06-19 | Plunger pump cooperative pressurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119163577A (en) |
-
2023
- 2023-06-19 CN CN202310727040.5A patent/CN119163577A/en active Pending
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