CN104679042A - Reverse osmosis pressure-adjustable type blasting device - Google Patents
Reverse osmosis pressure-adjustable type blasting device Download PDFInfo
- Publication number
- CN104679042A CN104679042A CN201310642163.5A CN201310642163A CN104679042A CN 104679042 A CN104679042 A CN 104679042A CN 201310642163 A CN201310642163 A CN 201310642163A CN 104679042 A CN104679042 A CN 104679042A
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- China
- Prior art keywords
- relay
- pressure
- open contact
- normally open
- rupture disk
- Prior art date
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 23
- 238000005422 blasting Methods 0.000 title abstract description 9
- 238000012423 maintenance Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 238000004880 explosion Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 238000001764 infiltration Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a reverse osmosis pressure-adjustable type blasting device. A heavy hammer is arranged on an external pipeline and positioned above a blasting film; an output end of a pressure transmitter is connected with an input end of a programmable logic controller; an output end of the programmable logic controller is connected with a coil of a first relay; one end of a first normally open contact of the first relay is connected with a positive electrode of a power supply; the other end of the first normally open contact is in series connected with one end of a coil of a second relay; the other end of the coil of the second relay is connected with a negative electrode of the power supply; one end of the first normally open contact of the second relay is connected with a positive electrode of the power supply; the other end of the first normally open contact of the second relay is connected with a drive motor; the drive motor is further connected with a negative electrode of a power supply; an output end of the drive motor is connected with the heavy hammer. According to the reverse osmosis pressure-adjustable type blasting device, when a set pressure value is reached, automatic-collision type external pressure and pressure generated by pressure difference at the two sides of the blasting film simultaneously act onto the blasting film to ensure a purpose that the blasting film is instantaneously broken to instantaneously release pressure.
Description
Technical field
The present invention relates to the adjustable demolition set of a kind of reverse osmosis pressure.
Background technology
Reverse osmosis deaslination treatment process has been full maturity and has been used in electric power, oil, chemical industry, drinking water treatment etc. to relate to the high all trades and professions of water quality requirement, reverse osmosis membrane product has been moved towards the trend of domestic production by completely external import, but no matter be domestic production or external import reverse-osmosis membrane element, in system design process, all must consider the problem of producing water side back pressure.
At reverse osmosis water treatment system, the pressure that back pressure refers to product water side is greater than the situation of the pressure of feedwater side.According to the architectural characteristic of reverse osmosis membrane, the film pocket of wound membrane element similar long letter envelope shape, on the product water pipe core being bonded in containing perforate of opening.Multiple film pocket is wound up on same product center pipe, feedwater current are flow through from the outside of film, under feed pressure, conflux in people's product water pipe core after making fresh water enter film pocket by film.Flow in film bag for the ease of product water, in the film bag of envelope shape, accompany the fabric-supported layer of one deck product water water conservancy diversion; In order to make feedwater flow uniformly through film bag surface, giving in aquaporin between film bag and film bag accompanies filter layer.Three face cementing agents of film pocket bond together, if the pressure of product water side is greater than the pressure of feedwater side, so these bonding wires will break and cause the obvious reduction of membrane component salt rejection rate, and serious even can cause the completely lost of salt rejection rate.Therefore considering from the angle of safety, can not there is back pressure in counter-infiltration system.By pressure-actuated because reverse osmosis membrane filtration will reach fresh water (i.e. desalted water), that is, influent side pressure will much larger than product water wall pressure, all generally that before feed water by reverse osmosis, rated head is set, the high-pressure pump of rated flow, just can overcome osmotic pressure fresh water is extruded by counter-infiltration rolled film, back pressure can not be there is when normal operation, if but system is abnormal or the unexpected instantaneous stop of fault, valve on dilute side outlet conduit is because fault is closed suddenly instantaneously, people starts shooting when dilute side tube outlet door is closed for maloperation, at this moment because fault must cause system-down to be protected, the working pressure pop-off of more than the 1.0Mpa of reverse osmosis high-pressure pump before shutting down, and the pressure of reverse osmosis produced water side generally 0.1-0.3Mpa is because above fault exists, so just likely there is back pressure reverse impact membrane component causes bonding wire to break, therefore counter-infiltration system must have a strick precaution to deal with the problem of back pressure.
At present, prevent the disposal route of counter-infiltration back pressure as follows:
A, now system are under normal circumstances; counter-infiltration system produces water side and is all provided with electronic or pneumatic vent valves; in addition when system cloud gray model or stopping; high-pressure pump is all arranged to the pneumatic and frequency conversion of frequency conversion and is stopped; before such counter-infiltration starts or when shutting down; produce the electronic or pneumatic door in water side all can automatically open, in system, this design substantially eliminates in operational process the possibility producing back pressure.
If the b system failure or human factor cause and produce the situation such as water side manually operated door closedown and occur, produce back pressure, producing water side with regard to needing explosion bypass is set the pressure reduction that produces water side and dense water side instantaneously can be detected and rupture disk is successfully broken reach the object of pressure release.
C, at present conventional blasting method film are that poly (methyl methacrylate) plate or UPVC plate are processed into certain thickness, machine-shaping consequence is stressed and just sets, such as be arranged to the withstand voltage rupture disk of withstand voltage 0.2Mpa, no matter which kind of situation will mechanical disruption when only before and after rupture disk, pressure reduction is greater than 0.2Mpa, and this mechanical rupture disk has following a few point defect:
1) set pressure of actual moving process borehole blasting film is non-adjustable.
2) normal or improper pressure limit, rupture disk all can explosion.
3) catabiosis that has of organic glass or poly (methyl methacrylate) plate material occurs.Actual voltage withstand class is slowly lower than initial value, and under just there will be normal operation, rupture disk oneself explosion, causes unnecessary equipment downtime, the expense that maintenance maintenance etc. are unnecessary.
There is hang-up in fault; rupture disk should explosion immediately under setting value differential pressure conditions in theory; to reach the effect of protection; and in fact often occur rupture disk break after both sides pressure reduction be reduced to below setting value instantaneously with regard to there is no enough power sources and impel rupture disk to continue to break to the degree of enough moment pressure releases, thus do not play the effect of correct protection reverse osmosis membrane.
Summary of the invention
For the deficiencies in the prior art, the invention provides the adjustable demolition set of a kind of reverse osmosis pressure, the present invention is when reaching the force value of setting, the pressure that pressure reduction in automatic impacting type external force and rupture disk both sides produces acts on rupture disk, to ensure that rupture disk breaks instantaneously to the object of moment pressure release simultaneously.
The technical scheme solved the problems of the technologies described above is as follows:
The adjustable demolition set of reverse osmosis pressure, comprise external pipe and rupture disk, rupture disk is arranged on external pipe, also comprise weight, pressure unit, programmable logic controller (PLC), first relay and drive motor, weight to be arranged on external pipe and to be positioned at the top of rupture disk, the output terminal of pressure unit is connected with the input end of programmable logic controller (PLC), the output terminal of programmable logic controller (PLC) is connected with the coil of the first relay, one end of first normally open contact of the first relay is connected with positive source, the other end of the first normally open contact is connected with one end of the coil of the second relay, the other end of the coil of the second relay is connected with power cathode, one end of first normally open contact of the second relay is connected with positive source, the other end of the first normally open contact of the second relay is connected with drive motor, drive motor is also connected with power cathode, the output terminal of drive motor is connected with weight.
Also comprise a condition indication circuit, this condition indication circuit is made up of the first branch road and the second branch road, first branch road and the second branch circuit parallel connection, the second normally open contact that first branch road comprises the second relay and the release pilot lamp of connecting with this second normally open contact, the normally closed interlock that the second branch road comprises the second relay and the maintenance pilot lamp of connecting with this normally closed interlock.
Described rupture disk is adjustable rupture disk.
Have employed such scheme, the pressure adjustable of rupture disk of the present invention, during Installation and Debugging, according to the droop loss on actual water producing pipe road, in programmable logic controller (PLC), set a value of risk, ensure that the burst pressure of rupture disk is under water pressure is produced in normal operation, can not explosion.Once because man-made fault or the system failure occur that back pressure produces, rupture disk moment explosion.
Explosion has external force increase rupture disk to break instantaneously: existing rupture disk is all that the compression failure rupture disk relying on the pressure reduction of rupture disk both sides to produce breaks; this mechanical type mode has a unsurmountable shortcoming; exactly once setting value reaches; rupture disk will break at once; pressure is now maximum; rupture disk continues the degree of breaking to enough moment pressure releases not have follow-up power source to ensure, thus is not just also very desirable to the back-pressure protection effect that reverse osmosis membrane plays.The present invention, by after setting up weight, reaches once pressure set points, and the pressure that the pressure reduction that programmable logic controller (PLC) controls impacting type external force and rupture disk both sides automatically produces acts on rupture disk, to ensure that rupture disk breaks instantaneously to the object of moment pressure release simultaneously.
The present invention has following features:
1) compact overall structure smooth, be easy to install;
2) without the need to independent design motivation source, just can reach to increase and clash into external force.
3) the adjustable counter-infiltration system that fundamentally solves of burst pressure produces water wall pressure normal variation and the improper explosion of rupture disk that causes, thus decreases the unnecessary shutdown maintenance of applying unit and maintenance cost;
4) the present invention also goes for other similar effects needing to reach operational outfit overpressure protection.
Accompanying drawing explanation
Fig. 1 is the mounting structure figure of rupture disk of the present invention and weight;
Fig. 2 is the electrical structure schematic diagram of the adjustable demolition set of reverse osmosis pressure of the present invention;
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
With reference to Fig. 1, the adjustable demolition set of reverse osmosis pressure of the present utility model, comprises external pipe 1 and rupture disk 2, and rupture disk 1 is arranged on external pipe 2, and rupture disk 2 is adjustable rupture disk.Also comprise weight 3, pressure unit 4, programmable logic controller (PLC) 5, first relay and drive motor M, weight 3 to be arranged on external pipe 1 and to be positioned at the top of rupture disk 2, the output terminal of pressure unit 4 is connected with the input end of programmable logic controller (PLC) 5, the output terminal of programmable logic controller (PLC) 5 is connected with the coil 1K1 of the first relay, one end of first normally open contact 1K11 of the first relay is connected with positive source, the other end of the first normally open contact 1K11 is connected with one end of the coil KA1 of the second relay, the other end of the coil KA1 of the second relay is connected with power cathode, one end of first normally open contact KA11 of the second relay is connected with positive source, the other end of the first normally open contact KA11 of the second relay is connected with drive motor M, drive motor M is also connected with power cathode, the output terminal of drive motor M is connected with weight 3.Also comprise a condition indication circuit, this condition indication circuit is made up of the first branch road and the second branch road, the first branch road and the second branch circuit parallel connection.The second normally open contact KA12 that first branch road comprises the second relay and the release pilot lamp 1HD connected with this second normally open contact KA12.The normally closed interlock KA13 that second branch road comprises the second relay and the maintenance pilot lamp 1LD connected with this normally closed interlock.
Claims (3)
1. the adjustable demolition set of reverse osmosis pressure, comprise external pipe and rupture disk, rupture disk is arranged on external pipe, it is characterized in that: also comprise weight, pressure unit, programmable logic controller (PLC), first relay and drive motor, weight to be arranged on external pipe and to be positioned at the top of rupture disk, the output terminal of pressure unit is connected with the input end of programmable logic controller (PLC), the output terminal of programmable logic controller (PLC) is connected with the coil of the first relay, one end of first normally open contact of the first relay is connected with positive source, the other end of the first normally open contact is connected with one end of the coil of the second relay, the other end of the coil of the second relay is connected with power cathode, one end of first normally open contact of the second relay is connected with positive source, the other end of the first normally open contact of the second relay is connected with drive motor, drive motor is also connected with power cathode, the output terminal of drive motor is connected with weight.
2. the adjustable demolition set of reverse osmosis pressure according to claim 1, it is characterized in that: also comprise a condition indication circuit, this condition indication circuit is made up of the first branch road and the second branch road, first branch road and the second branch circuit parallel connection, the second normally open contact that first branch road comprises the second relay and the release pilot lamp of connecting with this second normally open contact, the normally closed interlock that the second branch road comprises the second relay and the maintenance pilot lamp of connecting with this normally closed interlock.
3. the adjustable demolition set of reverse osmosis pressure according to claim 1, is characterized in that: described rupture disk is adjustable rupture disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642163.5A CN104679042A (en) | 2013-12-03 | 2013-12-03 | Reverse osmosis pressure-adjustable type blasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642163.5A CN104679042A (en) | 2013-12-03 | 2013-12-03 | Reverse osmosis pressure-adjustable type blasting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104679042A true CN104679042A (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310642163.5A Pending CN104679042A (en) | 2013-12-03 | 2013-12-03 | Reverse osmosis pressure-adjustable type blasting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104679042A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731331A (en) * | 2016-08-12 | 2018-02-23 | 苏州热工研究院有限公司 | A kind of nuclear power plant's grid decontamination machine overhauling mini system |
| CN110300535A (en) * | 2017-02-20 | 2019-10-01 | 福腾宝集团有限公司 | Filter capsule of secondary filter for coffee and application thereof |
-
2013
- 2013-12-03 CN CN201310642163.5A patent/CN104679042A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731331A (en) * | 2016-08-12 | 2018-02-23 | 苏州热工研究院有限公司 | A kind of nuclear power plant's grid decontamination machine overhauling mini system |
| CN107731331B (en) * | 2016-08-12 | 2024-01-05 | 苏州热工研究院有限公司 | Nuclear power plant grid dirt separator overhauls little system |
| CN110300535A (en) * | 2017-02-20 | 2019-10-01 | 福腾宝集团有限公司 | Filter capsule of secondary filter for coffee and application thereof |
| US11617468B2 (en) | 2017-02-20 | 2023-04-04 | Wmf Gmbh | Filter capsule for secondary filtration of coffee and use thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |