CN204073865U - Two-pass reverse osmosis low-pressure washing device - Google Patents
Two-pass reverse osmosis low-pressure washing device Download PDFInfo
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- CN204073865U CN204073865U CN201420432849.1U CN201420432849U CN204073865U CN 204073865 U CN204073865 U CN 204073865U CN 201420432849 U CN201420432849 U CN 201420432849U CN 204073865 U CN204073865 U CN 204073865U
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- reverse osmosis
- pass reverse
- water
- pressure pump
- pump
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Abstract
The utility model provides a kind of two-pass reverse osmosis low-pressure washing device, this flusher comprises two-pass reverse osmosis feed pump, high-pressure pump and second level reverse osmosis apparatus, the water inlet end of described high-pressure pump is connected by the water side of back with water inlet line with described two-pass reverse osmosis feed pump, and the water side of described high-pressure pump is connected by the water inlet end of water outlet pipeline with described second level reverse osmosis apparatus; Be provided with bypass clean-up line between described high-pressure pump back with water inlet line and water outlet pipeline, described bypass clean-up line is provided with bypass control valve.Adopt flusher of the present utility model, not only save two-pass reverse osmosis and rinse cartridge filter and two-pass reverse osmosis low-pressure washing water pump two kinds of equipment, and solve the resistance problem that must overcome high-pressure pump when system low-voltage rinses, safeguard simultaneously and ensured high pressure pump performance; While raising counter-infiltration system economy, add safety in operation and the stability of system, save system investments and reduce operation energy consumption.
Description
Technical field
The utility model belongs to flusher in nuclear power plant's desalinization two-pass reverse osmosis process, is specifically related to a kind of two-pass reverse osmosis low-pressure washing device.
Background technology
Due to the scarcity day by day of freshwater resources, in nuclear power plant, adopt desalination technology to solve fresh water demand becomes current effective way.Due to the maturity of reverse osmosis membrane desalination technology, security, rationally and economy, at present built in China, in the nuclear power plant built, all adopt Reverse-osmosis Seawater Desalination Technology preparing fresh.
As shown in Figure 2, general two-stage reverse osmosis system comprises feed pump 1, cartridge filter 2, high-pressure pump 3, reverse osmosis unit 4, fresh-water tank 5.
Counter-infiltration rinse-system comprises two-pass reverse osmosis low-pressure washing water pump 6 and two-pass reverse osmosis rinses cartridge filter 7.When counter-infiltration system starts, first start counter-infiltration low-pressure washing water pump 6, flushing exhaust is carried out to counter-infiltration shelving system.
When counter-infiltration system is stopped transport, permeable membrane in second level reverse osmosis apparatus 4 must be rinsed with the water of secondary fresh-water tank 5 reverse osmosis produced water or high-quality, to be displaced in pressure vessel and permeable membrane by the dense water of high salinity, prevent the pollutant of dense water side deposition from polluting the reverse osmosis membrane in reverse osmosis unit 4 or damaging.
In addition, need after Chemical cleaning to start counter-infiltration rinse-system, liquid is washed down and avoids the impact of cleaning liquid to produce water water quality.
The operation of above-mentioned counter-infiltration rinse-system generally adopts reverse osmosis produced water, i.e. water source in secondary fresh-water tank 5, enters reverse osmosis unit rinse through two-pass reverse osmosis low-pressure washing water pump 6 and two-pass reverse osmosis flushing cartridge filter 7.
Because in first-stage reverse osmosis product water in seawater desalination system, the content of calcium, magnesium ion falls too low, its flushing water as two-pass reverse osmosis film very well, enough meets requirement of system design.
Utility model content
In order to solve the defect existed in prior art, the utility model provides a kind of two-pass reverse osmosis low-pressure washing device, this flusher comprises two-pass reverse osmosis feed pump, high-pressure pump and second level reverse osmosis apparatus, the water inlet end of described high-pressure pump is connected by the water side of back with water inlet line with described two-pass reverse osmosis feed pump, and the water side of described high-pressure pump is connected by the water inlet end of water outlet pipeline with described second level reverse osmosis apparatus; Be provided with bypass clean-up line between described high-pressure pump back with water inlet line and water outlet pipeline, described bypass clean-up line is provided with bypass control valve.
Further, described bypass control valve is pneumatic bypass control valve.
Further, the connecting line between described high-pressure pump and two-pass reverse osmosis feed pump is provided with cartridge filter.
Further, described two-pass reverse osmosis feed pump provides water source by first-stage reverse osmosis.
Further, the water side of described second level reverse osmosis apparatus is connected with secondary fresh-water tank.
Advantageous Effects of the present utility model is: the utility model by being provided with bypass purge pipeline between the back with water inlet line and water outlet pipeline of high-pressure pump, save two-pass reverse osmosis and rinse cartridge filter and two-pass reverse osmosis low-pressure washing water pump two kinds of equipment, save system investments thus and reduce operation energy consumption; Solve the resistance problem that must overcome high-pressure pump when system low-voltage rinses simultaneously, safeguarded and ensured high pressure pump performance, while raising counter-infiltration system economy, add the safety and stability of system cloud gray model.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model two-pass reverse osmosis low-pressure washing device;
Fig. 2 is the structural representation of two-pass reverse osmosis low-pressure washing device in prior art.
In figure:
1-two-pass reverse osmosis feed pump 2-cartridge filter 3-high-pressure pump
4-second level reverse osmosis apparatus 5-secondary fresh-water tank 6-two-pass reverse osmosis low-pressure washing water pump
7-two-pass reverse osmosis rinses cartridge filter 8-bypass control valve
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
As shown in Figure 1, it is the two-pass reverse osmosis low-pressure washing device that the utility model provides, this flusher comprises two-pass reverse osmosis feed pump 1, high-pressure pump 3, second level reverse osmosis apparatus 4 and secondary fresh-water tank 5, the water inlet end of high-pressure pump 3 is connected by the water side of back with water inlet line with two-pass reverse osmosis feed pump 1, the water side of high-pressure pump 3 is connected by the water inlet end of water outlet pipeline with second level reverse osmosis apparatus 4, and the water side of second level reverse osmosis apparatus 4 is connected with secondary fresh-water tank 5; Be provided with bypass clean-up line between high-pressure pump 3 back with water inlet line and water outlet pipeline, bypass clean-up line is provided with bypass control valve 8.
Wherein, bypass control valve 8 adopts pneumatic bypass control valve, is swift in motion, and can complete regulating command fast.
In order to filter the impurity in first-stage reverse osmosis product water, between high-pressure pump 3 and two-pass reverse osmosis feed pump 1, be provided with cartridge filter 2.
In sum, the two-pass reverse osmosis low-pressure washing device that the utility model provides, can save two-pass reverse osmosis and rinse cartridge filter and two-pass reverse osmosis low-pressure washing water pump two kinds of equipment, thus saves system investments and reduce operation energy consumption.
Bypass clean-up line is provided with bypass control valve 8, solve the resistance problem that must overcome high-pressure pump when system low-voltage rinses, and safeguard and ensured high pressure pump performance, while raising counter-infiltration system economy, add safety in operation and the stability of system, save system investments and reduce operation energy consumption.
The utility model is achieved in that bypass control valve 8 is opened when second level reverse osmosis apparatus 4 needs to carry out low-pressure washing, and first-stage reverse osmosis produces water and promotes through two-pass reverse osmosis feed pump 1, carries out low-pressure washing by bypass clean-up line to second level reverse osmosis apparatus 4.
RO in figure is counter-infiltration;
Arrow in figure is the direction of current.
Two-pass reverse osmosis low-pressure washing device of the present utility model is not limited to above-mentioned detailed description of the invention, and those skilled in the art draw other embodiment according to the technical solution of the utility model, belongs to technological innovation scope of the present utility model equally.
Claims (5)
1. two-pass reverse osmosis low-pressure washing device, this flusher comprises two-pass reverse osmosis feed pump (1), high-pressure pump (3) and second level reverse osmosis apparatus (4), it is characterized in that: the water inlet end of described high-pressure pump (3) is connected by the water side of back with water inlet line with described two-pass reverse osmosis feed pump (1), and the water side of described high-pressure pump (3) is connected by the water inlet end of water outlet pipeline with described second level reverse osmosis apparatus (4); Be provided with bypass clean-up line between described high-pressure pump (3) back with water inlet line and water outlet pipeline, described bypass clean-up line (9) is provided with bypass control valve (8).
2. two-pass reverse osmosis low-pressure washing device as claimed in claim 1, is characterized in that: described bypass control valve (8) is pneumatic bypass control valve.
3. two-pass reverse osmosis low-pressure washing device as claimed in claim 2, is characterized in that: the connecting line between described high-pressure pump (3) and two-pass reverse osmosis feed pump (1) is provided with cartridge filter (2).
4. two-pass reverse osmosis low-pressure washing device as claimed in claim 3, is characterized in that: described two-pass reverse osmosis feed pump (1) provides water source by first-stage reverse osmosis.
5. two-pass reverse osmosis low-pressure washing device as claimed in claim 4, is characterized in that: the water side of described second level reverse osmosis apparatus (4) is connected with secondary fresh-water tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420432849.1U CN204073865U (en) | 2014-08-01 | 2014-08-01 | Two-pass reverse osmosis low-pressure washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420432849.1U CN204073865U (en) | 2014-08-01 | 2014-08-01 | Two-pass reverse osmosis low-pressure washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204073865U true CN204073865U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420432849.1U Expired - Fee Related CN204073865U (en) | 2014-08-01 | 2014-08-01 | Two-pass reverse osmosis low-pressure washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204073865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244068A (en) * | 2015-08-31 | 2016-01-13 | 中国核电工程有限公司 | Device and method for treating high-salt content radioactive waste liquid |
-
2014
- 2014-08-01 CN CN201420432849.1U patent/CN204073865U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244068A (en) * | 2015-08-31 | 2016-01-13 | 中国核电工程有限公司 | Device and method for treating high-salt content radioactive waste liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20200801 |