CN106955598A - The open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure - Google Patents

Abstract

The present invention relates to the open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure, including putamina, center water producing pipe, center pull rod, single membrane component, putamina two ends, which is set, set between termination fixed disk, two ends fixed disk peripheral pull bar, and putamina end is fixed in the fixing groove of termination fixed disk.Center pull rod is located in center water producing pipe inner chamber, and center pull rod two ends are exposed independent from outside putamina, and one end and the center water producing pipe of center pull rod are sealed, and the other end sets permeate joint.Single membrane component is arranged between front and rear two resistance to stress disk, and the support chip that the center of resistance to stress disk is connected with circumference is arc, is radially supported.The application can take into account that resistant is resistance to stifled simultaneously, the pressure loss is small, water-flow equation is uniform, film effective area more greatly, the advantages of operating pressure is high.

Description

Ultra-high pressure open flow channel network tube type high pressure reverse osmosis membrane module

technical field

The invention relates to a reverse osmosis membrane module, which is used for removing impurities such as organic matters and inorganic salts in water bodies. It can be used in water purification treatment technology, highly concentrated process of high-salt wastewater, high-organic wastewater and other industrial wastewater. In particular, it relates to an open network pipe channel reverse osmosis membrane module.

Background technique

In recent years, membrane technology has developed rapidly and has been widely used in fields such as electric power, metallurgy, petroleum and petrochemical, medicine, food, municipal engineering, sewage reuse, and seawater desalination. The demand for membrane technology and equipment in various projects is even higher. is a rapid increase. At present, in the field of zero discharge of leachate and concentrated brine, network-tube reverse osmosis membrane modules have been widely used. However, the common network-managed membrane module has the following defects, and the present invention makes corresponding improvements on the basis of the existing network-managed membrane module:

(1) The traditional 160 kg ultra-high pressure net-tube membrane module uses expensive 316Ti stainless steel pressure vessel, which limits the promotion of ultra-high pressure net-tube membrane module. In addition, the traditional 316Ti stainless steel pressure vessel will rust when exposed to sewage, which shortens the life of the ultra-high pressure network tube membrane module.

(2) The traditional network-tube membrane module adopts a ladder-shaped open flow channel. The open water inlet divider is divided into a coarse divider and a fine divider (Fig. 1). The water flow forms an angle of 90° with the fine divider during work. into the flow channel. The water flow with greater resistance is formed in the channel, so the suspended particles and organic matter in the feed water are easy to adhere to the feed water separator and cause the fouling of the membrane. In addition, the concentration of inorganic salts easily forms fouling on the surface of the membrane due to concentration polarization. Larger resistance in the inlet separator will lead to larger pressure loss. When the pressure loss is higher than 1 kg, the anti-stress disc will permeate along the center due to the weak bond between the anti-stress disc and the central permeate collection pipe. Liquid collection tube slide. The movement of the anti-stress disc will cause the rupture of the epoxy resin shell of the membrane element, which will eventually lead to the damage of the inlet screen and the membrane bag. In addition, membrane fouling and concentration polarization will lead to a decrease in membrane flux, which will eventually lead to a shortened membrane life.

(3) The support plate connecting the center ring and the outer ring of the traditional network-tube membrane module’s anti-stress plate adopts a straight piece connection, and a fan-shaped channel is formed between the support plate and the plate. Due to the gradual change of the circumferential membrane area and appropriate distribution, the feed water cannot be evenly distributed to the feed water channels in different circumferential directions, which may easily lead to blockage of some membrane channels. In addition, the inner wall of the center ring of the anti-stress plate of the traditional network-tube membrane module has no safety locking mechanism, so it is easy to cause the anti-stress plate to slide along the central permeate collection pipe, and eventually lead to the damage of the water separator and the membrane bag.

(4) Due to the lack of radian at the water inlet of the traditional deflector, the water flow enters from the straight hole, so the water cannot be evenly distributed in the water inlet channel of the membrane element, so it is easy to cause some membrane channels to be blocked. The sealing ring on the center draft tube is sealed by hugging and sealing the center draft tube. This sealing method can easily lead to water leakage, which in turn deteriorates the quality of the produced water. Long-term water leakage can cause corrosion of the stainless steel center tie rod.

Contents of the invention

The technical problem to be solved by the present invention is to solve the problems of the existing spiral and coiled reverse osmosis membrane elements with poor water inlet channels, poor resistance to fouling and clogging, easy to cause concentration polarization, and disc tube type reverse osmosis membrane components. The disadvantages are small membrane area, cumbersome maintenance, high investment cost, uneven water distribution, and poor high pressure resistance. Provided is an ultra-high pressure open channel network pipe reverse osmosis membrane module.

The specific technical solution is: an ultra-high pressure open flow channel network-managed high-pressure reverse osmosis membrane module, including a membrane shell (2), a central water production pipe (17) arranged in the membrane shell, a central tie rod (18), a single membrane The element (1), the membrane shell is a glass fiber pressure vessel, the water inlet end of the membrane shell (2) is provided with a raw water joint (7), the water outlet end is provided with a concentrated water joint (8), and the membrane shell (2) enters One end of the water inlet is provided with a water inlet flange end cover (3), and the inner side of the water inlet flange end cover (3) is further provided with a water inlet swirling flow guide plate (5) and an anti-stress plate (10). Sealing rings are set between the flange end cover (3), the water inlet swirling diversion plate (5), and the stress-resisting plate (10) respectively, and the membrane shell (2); the raw water joint (7) passes through The water inlet flange end cover (3) is docked with the water delivery hole of the water inlet swirling flow guide plate (5), and the water delivery hole is close to the edge of the guide plate to form a tangential water inlet, and the delivery The water hole is an arc-shaped hole to generate swirling water distribution, and a sealing ring is arranged between the raw water joint (7) and the water inlet swirling diversion plate (5).

One end of the water outlet of the membrane shell is provided with a water outlet flange end cover (4), and the inner side of the water outlet flange end cover (4) is provided with a water outlet swirling flow guide plate (6) and an anti-stress plate (10). Sealing rings are provided between the water outlet flange end cover (4), the water outlet swirling diversion plate (6), and the anti-stress plate (10) respectively, and the membrane shell (2), and the concentrated water joint (8) wears The water outlet flange end cover (4) is docked with the water delivery hole of the outlet swirl flow guide plate (6), and the concentrated water joint (8) is arranged between the outlet water swirl flow guide plate (6). There is a sealing ring; the anti-stress disc (10) forms a uniform swirl water distribution mode with the inlet and outlet water swirl flow guide discs.

The two ends of the central water production pipe (17) are respectively pressed against the steps set on the inner side of the water inlet and outlet swirling flow guide plate (6), and the central tie rod (18) is installed in the inner cavity of the central water production pipe (17). , and both ends of the center tie rod are exposed outside the membrane shell, there is a flow gap between the center tie rod (18) and the center water production pipe (17), and one end of the center tie rod (18) is sealed with the center water production pipe (17) , the other end is provided with a permeate joint (9) connected to the flow gap, and a permeate seal ring (15) is provided between the permeate joint (9) and the center tie rod (18).

The two ends of the membrane shell (2) are provided with terminal fixing plates (11), and the terminal fixing plates (11) are tightly connected to the inlet and outlet flange end covers (3, 4), and the terminal fixing plates (11) ) is provided with a fixing groove on the inner surface, and the two ends of the membrane shell (2) are fixed in the fixing groove; ) are provided with peripheral tie rods.

A single membrane element is arranged between the front and rear stress-resisting plates, and the central water production pipe (17) is provided with a series of small holes, and the permeate filtered by the membrane element flows into the central water production pipe through the series of small holes.

Furthermore, the anti-stress plate adopts a hydraulic design, and the support piece connecting the center and the circumference is arc-shaped and radially supported. This type of design can effectively distribute the water inflow to the plate surface evenly. The surface of the disk adopts ring-shaped openings from the center to the surroundings, and the diameter of the holes gradually increases from the inside to the outside. Because the membrane element is a roll structure, the membrane area is gradually expanding every week from the center (that is, the membrane area of the center circle is the smallest, and the membrane area of the outermost circle is the largest), so the design can make the water intake of different parts of the membrane surface Approximate to the same, so that the membrane element is in the best performance, and can transmit and disperse the stress of the inlet water. )

Further, a sealing ring of the central water production pipe is arranged in the step of the water inlet and outlet swirl flow guide plate.

Further, the terminal fixing plate is fixed with terminal fixing plate screws, and the peripheral pull rods are fixed on the terminal fixing plate through fixing nuts.

Preferably, the membrane element has an open mesh channel. The specific membrane element includes a separation layer coated on the outer periphery of the central water production pipe. The separation layer is a membrane bag layer rolled in the same direction by several membrane bags and open spacers. In the water inlet flow channel between the surface of the adjacent film bag layer, and the contact mode between the open partition and the surface of the film bag is a bump type, and the connection of the bump is a diamond-shaped fine partition, and the two rows of bumps on the contact surface with the film bag A diamond-shaped spacious open flow channel is formed between the screens along the direction of water inlet and outlet; the inner sides of the membrane bags and the open screens are connected and fixed with the central water production pipe, arranged radially from the center to the surroundings, and then the membrane bags and the open spacer are screwed together in the same direction to form the film bag layer, and the outer periphery of the rolled film bag layer is wrapped and sealed with glass fiber and epoxy resin glue, and the stress-resisting discs are installed at both ends .

Preferably, the membrane bag is formed by bonding two membranes with their front faces facing each other, and a pure water diversion net is set in the water production channel between the two membranes, and the filtered permeate flows out through the pure water diversion net .

The anti-stress plate of the present invention cooperates with the two structures of the inflow and outflow swirl flow diversion plate to form a uniform swirl water distribution mode.

Compared with the prior art, the present invention has the advantages of:

(1) A diamond-shaped open partition is used, and an open partition is set in the water inlet channel between the surfaces of the membrane bag. According to the fluid characteristics and the pressure requirements of the diaphragm, the open partition is only in contact with the surface of the membrane bag. Particle separator, which reduces the contact with the surface of the membrane while playing a supporting role. The rhombus-shaped fine partitions are connected to the raised particles. Between the two rows of raised granular partitions on the contact surface with the film bag, there are rhombus-shaped spacious open flow channels along the direction of water in and out. The mesh enters the flow channel at an angle of 45°. A water flow with minimal resistance is formed in the channel, and the flow velocity on the membrane surface is fast. The suspended impurities brought in from the feed water, as well as the intercepted inorganic salts and organic matter are not easy to be blocked, and are discharged from the membrane element with the flow of concentrated water, thus It effectively prevents the trapped pollutants from adhering to the water inlet channel and the surface of the membrane, resulting in fouling of the membrane and scaling due to concentration polarization, further avoiding the decrease of membrane flux and prolonging the life of the membrane. In addition, the reduced pressure loss of a single membrane can prevent the anti-stress disk from sliding along the central permeate collection pipe, thereby avoiding the rupture of the epoxy resin glue of the membrane element and the damage of the water inlet screen and the membrane bag.

(2) Placing a single reverse osmosis membrane element with an open network pipe flow channel in a pressure membrane shell can reduce the pressure loss of the membrane module. The use of stainless steel center tie rod helps to improve the operating pressure.

(3) The anti-stress plate adopts a hydraulic design, and the support piece connecting the center and the circumference adopts an arc design, which can effectively distribute the water evenly to the plate surface. The surface of the disk adopts ring-shaped openings from the center to the surroundings, and the diameter of the holes increases from small to large. The newly developed anti-stress disc adopts a safety locking mechanism to eliminate the problem of the anti-stress disc sliding along the central water production pipe, because the membrane element is in a roll structure, and the membrane area is slowly expanding from the center to the outside every week (that is, the central circumferential membrane The area is the smallest, and the membrane area of the outermost circle is the largest), so the design can make the water inflow on different parts of the membrane surface close to the same, so that the membrane element is in the best performance and can meet the 90bar operation.

(4) Raw water enters from one end face of the membrane element, and a swirling water inlet diversion plate is set at the water inlet end, and the water flows on the diversion plate through the opening with a radian, and enters one end face of the membrane evenly in a tangential movement , forming cross-flow filtration on the surface of the membrane, and the seal between the center hole of the diversion plate and the central water production pipe is changed from the conventional hoop seal. Directly press and seal with the sealing ring. The filtered concentrated water is discharged from the other end, and the filtered clean water is led out from the permeate water joint. This can effectively solve the defects of uneven water distribution of ordinary round hole direct water inlet and the unreliable sealing of the previous hoop-type sealing method. Further, a raw water connector is provided at the water inlet, a concentrated water connector is provided at the water outlet, and a pure water connector is located at the bottom of the membrane module.

(5) By setting the end fixing plate, four peripheral pull rods are installed on the periphery of the membrane module through the end fixing plate to securely and effectively fix the membrane element in the glass fiber pressure vessel (membrane shell made of glass fiber material). The inner side of the end fixing plate is provided with fixing grooves, and the two ends of the pressure vessel are fixed in the fixing grooves of the two end fixing plates, which significantly improves the pressure bearing capacity of the membrane module. Due to the use of glass fiber pressure vessels, the cost of membrane modules is greatly reduced. In addition, the glass fiber pressure vessel will not rust when in contact with sewage, thereby prolonging the life of the ultra-high pressure network tube membrane module. The invention is beneficial to the popularization of the 160-kilogram ultra-high pressure network-managed membrane module in the field of high-salt waste water.

The reverse osmosis membrane element assembly of the present invention can simultaneously take into account pollution resistance and blockage resistance (SDI≦20), small pressure loss, uniform water flow distribution, larger effective area of the membrane, significantly improved recovery rate and membrane flux, and can meet 160kg ultra-high pressure operation and other advantages. In addition, the utility model has a simple structure, is convenient for maintenance and has a longer service life.

Description of drawings

Figure 1 is a traditional ladder-shaped open channel water inlet screen;

Figure 2 is a structural schematic diagram of a traditional membrane element anti-stress disk;

Fig. 3 is a schematic diagram of a traditional deflector;

Fig. 4 is a schematic diagram of a traditional deflector;

Fig. 5 is a schematic diagram of a rhombus-shaped open channel water inlet partition in an embodiment of the present invention;

Fig. 6 is a cross-sectional view of the reverse osmosis membrane module of the open network pipe channel in the embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a swirling flow deflector in an embodiment of the present invention;

Fig. 8 is a schematic front view of a swirling flow deflector in an embodiment of the present invention;

Fig. 9 is a schematic diagram of the structure of the anti-stress disk in the embodiment of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 5 to 9, the ultra-high pressure open flow channel network-managed high-pressure reverse osmosis membrane module in this embodiment includes a membrane shell 2 (glass fiber pressure vessel), a central water production pipe 17 arranged in the membrane shell, a central Tie rod 18, a single membrane element 1, a raw water connector 7 at the inlet end of the membrane shell 2, a concentrated water connector 8 at the outlet end, and a water inlet flange end cover 3 at the water inlet end of the membrane shell. The inner side of the flange end cover 3 is further provided with a water inlet swirl flow guide plate 5 and an anti-stress plate 10, and the water inlet flange end cover 3, the water inlet swirl flow guide plate 5, and the anti-stress plate 10 are respectively connected with the membrane The end cover sealing ring 12 and the deflector disk sealing ring 13 are arranged correspondingly between the shells 2 . The raw water joint 7 passes through the water inlet flange end cover 3 and docks with the water delivery hole of the water inlet swirling flow diversion plate 5, and the water delivery hole is close to the edge of the diversion plate in a tangential water inlet, and the water delivery The holes are curved holes to produce swirl water distribution. A water production sealing ring 15 is arranged between the raw water connector 7 and the water inlet swirling flow deflector plate 5 .

One end of the water outlet of the membrane shell is provided with a water outlet flange end cover 4, and the inner side of the water outlet flange end cover 4 is provided with a water outlet swirl flow guide plate 6, an anti-stress plate 10, a water outlet flange end cover 4, and a water outlet swirl flow guide plate. A sealing ring is provided between the flow plate 6 and the anti-stress plate 10 and the membrane shell 2 respectively, and the concentrated water joint 8 passes through the water outlet flange end cover 4 and is docked with the water delivery hole of the water outlet swirling flow guide plate 6. A sealing ring is provided between the concentrated water joint 8 and the water outlet swirl flow deflector plate 6 .

The two ends of the membrane shell 2 are provided with a terminal fixing plate 11, which is tightly connected to the inlet and outlet flange end covers 3 and 4, and a 16mm fixing groove is provided on the inner side of the terminal fixing plate 11, and the membrane Both ends of the shell 2 are fixed in the fixing groove. The terminal fixing disc 11 is fixed by the terminal fixing disc screw 20 . The edge of the terminal fixed disk 11 is beyond the membrane shell, and four peripheral pull rods 21 are arranged between the two fixed disks 11 , and the peripheral pull rods 21 are fixed on the terminal fixed disk 11 by fixing nuts 22 .

The two ends of the central water production pipe 17 are tightly pressed against the steps provided on the inner sides of the water inlet and outlet swirl flow diversion plates 5 and 6 respectively, and the central water production pipes are sealed in the steps of the inlet and outlet water swirl flow diversion disks 5 and 6. Circle 16. The central tie rod 18 is installed in the inner cavity of the central water production pipe 17, and both ends of the central tie rod 18 are exposed outside the membrane shell 2, and the two ends of the central tie rod 18 are provided with central tie rod fixing nuts 19. A circulation gap is reserved between the central tie rod 18 and the central water production pipe 17, and one end of the central tie rod 18 and the central water production pipe 17 are sealed by a sealing ring, and the other end is provided with a permeate joint 9 connected to the circulation gap, and the central water production pipe The permeate water collected in is exported through the permeate connection 9.

A single membrane element 1 is set between the front and rear two anti-stress disks, and the central water production pipe 17 is provided with a series of small holes. The permeate filtered by the membrane element flows into the central water production pipe 17 through the series of small holes. 2 is provided with a membrane element sealing ring 14.

As shown in Figure 9, the anti-stress plate adopts a hydraulic design, and the supporting piece connecting the center and the circumference is arc-shaped and radially supported. This design can effectively distribute the water to the plate surface evenly. The surface of the disk adopts ring-shaped openings from the center to the surroundings, and the diameter of the holes gradually increases from the inside to the outside. The anti-stress plate 10 and the water inlet and outlet swirl flow diversion plates constitute a uniform swirl water distribution method.

In this embodiment, the membrane element has an open network pipe flow channel. The specific membrane element includes a separation layer coated on the periphery of the central water production pipe 17. The separation layer is a membrane bag layer rolled in the same direction by a number of membrane bags and an open spacer. The open spacer is arranged on In the water inlet channel between the surfaces of adjacent film bags, the contact between the open spacer and the surface of the film bag is in the form of bumps. A diamond-shaped spacious open flow channel is formed along the direction of water in and out between the nets, as shown in Figure 5. The inner side of the membrane bag and the open partition net are connected and fixed with the central water production pipe, arranged radially from the center to the surrounding, and then the membrane bag and the open partition net are screwed together in the same direction to form the membrane bag layer, Use glass fiber and epoxy resin glue to wrap and seal the outer periphery of the rolled film bag layer, and install the stress-resisting discs at both ends.

The above-mentioned membrane bag is formed by bonding two pieces of membranes facing each other. A pure water diversion net is set in the water production channel between the two diaphragms, and the filtered permeate flows out through the pure water diversion net.

1. The high-efficiency open network tube channel reverse osmosis membrane module does not use stainless steel center rod (see patent number), while the open channel network tube high pressure reverse osmosis membrane module (STRO) adopts stainless steel center rod, ultra-high pressure open channel network tube The reverse osmosis membrane module (STRO) not only uses a stainless steel central tie rod but also uses 4 peripheral tie rods, which makes the operating pressure of the new membrane module rise from the original 75 kg to 90 kg and 160 kg respectively.

2. When the salt content of the raw water is 25000-30000mg/l, the recovery rate of the traditional 75kg level high-efficiency open-type network pipe channel reverse osmosis membrane module is usually limited to 50% due to the low operating pressure about. However, if the 90kg-level open-channel network-managed high-pressure reverse osmosis membrane module and the 160-kg ultra-high pressure open-channel network-managed reverse osmosis membrane module are used, the recovery rate of the system can be increased to about 60% and 80% respectively, so that Increase the concentration ratio of the system from 2 to 5. The higher recovery rate reduces the production of concentrated water in the system, thus reducing the processing capacity of the subsequent evaporator, which can greatly reduce the investment and operating costs of the system. The lower operating pressure results in lower water production of the membrane, so when the water production of the system is constant, the number of membrane modules required is higher, so the investment cost of the system is higher. The ultra-high pressure reverse osmosis membrane module can overcome the higher osmotic pressure, because the increase of the inlet water pressure increases the net pressure driving the reverse osmosis, which increases the water production, thereby reducing the number of membrane modules, thereby reducing the system's operating cost. investment and operating costs.

3. When the operating pressure of the reverse osmosis membrane increases, the rejection rate of the membrane to salt also increases. Because the permeation flux increases with the increase of the operating pressure, when the pressure increases, the amount of solvent in the permeable membrane increases while the salt flux remains unchanged, so the desalination rate increases.

4. When the salt content of the raw water is 25,000-30,000 mg/l, the 75kg-level open channel network-managed high-pressure reverse osmosis membrane module (STRO) (without central rod), the 90kg-level open channel network-managed high-pressure The experimental test data of the reverse osmosis membrane module (STRO) and the ultra-high pressure open channel network tube reverse osmosis membrane module (STRO) are as follows:

Raw water salt content 25000-30000 mg/l System Recovery Salt rejection rate membrane flux 75 kg class STRO ̴50% 95% 10LMH 90 kg class STRO ̴60% 95.8% 12LMH 160 kg class STRO ̴80% 95.9% 15LMH

Claims (6)

1. a kind of open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure, including putamina（2）, be arranged in putamina Heart water producing pipe（17）, center pull rod（18）, single membrane component（1）, the putamina is glass fibre pressure vessel, putamina（2）Enter One end of water is provided with raw water joint（7）, one end of water outlet is provided with concentrated water joint（8）, putamina（2）Water inlet one end is provided with Water-in flange end cap（3）, water-in flange end cap（3）Inner side is provided with into water spiral-flow type flow guiding disc again（5）With resistance to stress disk（10）, The water-in flange end cap（3）, water inlet spiral-flow type flow guiding disc（5）, resistance to stress disk（10）Three respectively with putamina（2）Between set Sealing ring；The raw water joint（7）Through the water-in flange end cap（3）With water inlet spiral-flow type flow guiding disc（5）Water hole pair Connect, the water hole is arcuate socket to produce spiral-flow type cloth close to the plate edge of flow guiding disc in tangential water inlet, and the water hole Water, the raw water joint（7）With water inlet spiral-flow type flow guiding disc（5）Between be provided with sealing ring；

One end of the putamina water outlet is provided with water-output flange end cap（4）, water-output flange end cap（4）Inner side is provided with water outlet rotation again Streaming flow guiding disc（6）, resistance to stress disk（10）, the water-output flange end cap（4）, water outlet spiral-flow type flow guiding disc（6）, resistance to stress disk （10）Three respectively with putamina（2）Between sealing ring, the concentrated water joint are set（8）Through the water-output flange end cap（4）With Water outlet spiral-flow type flow guiding disc（6）Water hole docking, the concentrated water joint（8）With water outlet spiral-flow type flow guiding disc（6）Between set There is sealing ring；

The resistance to stress disk（10）Uniform spiral-flow type water distribution manner is constituted between water-in and water-out spiral-flow type flow guiding disc；

The center water producing pipe（17）Two ends respectively with water-in and water-out spiral-flow type flow guiding disc（6）The step-shaped top opened up on medial surface Tightly, center pull rod（18）It is located in center water producing pipe（17）Inner chamber, and center pull rod two ends are exposed independent from outside putamina, center is drawn Bar（18）With center water producing pipe（17）Between retain passage gaps, and center pull rod（18）One end and center water producing pipe（17）It Between seal, the other end set with passage gaps turn on permeate joint（9）, permeate joint（9）With center pull rod（18）It Between set production waterstop ring（15）；

The putamina（2）Two ends set termination fixed disk（11）, the termination fixed disk（11）With water-in and water-out flange end caping Tightly, the termination fixed disk（11）Medial surface on offer fixing groove, putamina（2）Two ends be fixed on the fixing groove It is interior；Termination fixed disk（11）Plate edge exceed putamina outside, two ends fixed disk（11）Between be provided with peripheral pull bar；

Single membrane component is arranged between front and rear two resistance to stress disk, center water producing pipe（17）On offer ordered series of numbers aperture, through membrane element Penetrating fluid after part filtering imports center water producing pipe from ordered series of numbers aperture；

The support chip that the center of the resistance to stress disk is connected with circumference is arc, is radially supported, and is used in card from center To surrounding circular openings, aperture becomes larger from inside to outside.

2. the open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure according to claim 1, it is characterised in that： Water-in and water-out spiral-flow type flow guiding disc（6）The step in setting center water producing pipe sealing ring（16）.

3. the open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure according to claim 1, it is characterised in that：Institute State termination fixed disk（11）Using termination fixed disk screw（20）Fixed, peripheral pull bar is fixed on termination by fixing nut and fixed Disk（11）On.

4. the open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure according to claim 1, it is characterised in that：Institute Stating membrane component has open webmaster runner.

5. the open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure according to claim 1, it is characterised in that：Institute State membrane component and be coated on center water producing pipe（17）The separating layer of periphery, if the separating layer be by dry film bag and it is open every The film bag layer that net is rolled with same direction, the open filter is arranged on the water inlet flow channel between adjacent membranes bag layer surface In, and open filter and film bag surface are the way of contact of button type, connecting salient points for the thin filter of rhombus, connect with film bag Between the two row convex dot shape filters on tactile surface the spacious open runner of a rule rhombus is formed along Inlet and outlet water direction；

The inner side edge of the film bag and open filter is connected to a fixed with center water producing pipe, is arranged in center to emitting shape around Row, then film bag and open filter are screwed to constitute described film bag layer, outside the film bag layer spooled in the same direction together Week is wound environmental sealing with glass fibre and epoxide-resin glue, and the resistance to stress disk is installed at two ends again.

6. the open runner network pipe type high pressure reverse osmosis membrane assembly of super-pressure according to claim 5, it is characterised in that：Institute State film bag to be formed by the opposite bonding in two panels diaphragm front, pure water flow-guiding screen, mistake are provided with the production water flow passage between two panels diaphragm Obtained penetrating fluid is filtered to flow out through pure water flow-guiding screen.