KR102045100B1 - Anti-telescoping device for membrane separation device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescoping prevention device for a membrane separation device, and to a telescoping prevention device for a membrane separation device of a type that excludes a wing-shaped structure and easily secures durability and a flow path.
In particular, the present invention relates to a telescoping prevention device that can be effectively used in fluid separation and purification techniques using membrane separation devices such as reverse osmosis devices, nano filtration devices, ultrafiltration devices and microfiltration devices.

Description

Anti-telescoping device for membrane separation device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescoping prevention device for a membrane separation device, and to a telescoping prevention device for a membrane separation device, excluding a wing-shaped structure, and having a durability and easy passage.

In particular, the present invention relates to a telescoping prevention device that can be effectively used in fluid separation and purification techniques using membrane separation devices such as reverse osmosis devices, nano filtration devices, ultrafiltration devices and microfiltration devices.

Recently, due to rapid population growth and environmental pollution, water treatment technology and various projects using the same have been spotlighted as future growth engines.

In particular, the membrane separation device can be used in various fields. The membrane separation device can be used to purify water. For example, seawater may be purified in a membrane separation device that uses reverse osmosis to provide beverages. Also in wastewater treatment, membrane separation devices can be used to disinfect (or sterilize) wastewater by removing polymers, colloids and particles.

The membrane separation device using reverse osmosis can be described as follows.

The two solutions with different concentrations are separated by a semipermeable membrane. After a certain time, a solution with a lower concentration moves toward a higher concentration, causing a constant level difference. This is called an "osmotic" phenomenon. It is called "osmotic pressure". In contrast to the "osmotic" phenomenon, the process of moving a high-concentration solution to a lower concentration by using pressure is called "reverse osmosis." A device that purifies water by passing only the water molecules through the semi-permeable membrane is called a reverse osmosis facility. The semi-permeable membrane entered therein is a "reverse osmosis filter", and such a filter is a "reverse osmosis filter module".

In such a reverse osmosis filter module, a telescoping prevention device (ATD), which is an end cap that prevents stretching / extension (or telescoping) that may be caused by a pressure difference between a water inflow and an outflow. Anti-Telescoping Device) will exist.

The telescoping prevention device functions as an important component in the reverse osmosis filter module because it performs the above-described functions and also serves as an inlet and an outlet of the fluid flowing between the reverse osmosis filter module. The degree of securing the flow path through which the fluid moves is determined.

1 shows a schematic form of a conventional telescoping prevention device.

In the case of Figure 1 (a) is a double structure that can be fastened, the durability is good and the flow path is secured, but there is a disadvantage that the structure is complicated and the manufacturing cost increases because of the fastening structure, the case of Figure 1 (b) Although there is no fastening structure, there are many parts which are blocked by the plate, so that the durability is good but the flow path is not secured. In addition, in the case of FIG. 1 (c), the structure is simple, but the number of wings is small and the structure is composed of the first part 1 and the second part 2, and thus there is a disadvantage in that performance is degraded in terms of durability and flow passage. Done.

As such, the conventional telescoping prevention apparatus basically adopts a wing-like structure, and thus has the same problems caused by the wing-type structure described above.

Korean Patent Publication No. 10-2011-0112321

The main object of the present invention is to secure the durability and flow path by excluding the structure of the wing shape, by including a main body portion formed by passing through at least two concentric passages and a plurality of through holes formed in a constant shape inside the main body portion It is to provide a telescoping prevention device for a membrane separation device of an easy form.

In addition, by including such a telescoping prevention device to provide a membrane separation device that can perform the purification and separation of the fluid more effectively.

In order to solve the above problems, the apparatus for preventing telescoping for membrane separation apparatus according to the present invention includes a main body portion through which at least two concentric passages are formed, and a plurality of predetermined shapes are formed inside the main body portion. Characterized in that the through-hole is formed.

Preferably, the plurality of through holes may include any one or more of triangular, rectangular, and polygonal shapes.

Preferably, the plurality of through holes may be repeatedly formed.

Preferably, the plurality of through holes has a hexagonal shape, and the plurality of through holes may be formed adjacent to each other.

Preferably, the plurality of through holes may include a honey comb structure.

Preferably, the thickness of the partition wall between the plurality of through holes may be formed to become thicker toward the lower direction.

Preferably, the thickness of the partition wall between the plurality of through holes may be formed to become thinner toward the lower direction.

The telescoping prevention device for membrane separation device according to the present invention includes a main body portion consisting of an inner circumferential ring and an outer circumferential ring, and a plurality of through holes having a predetermined shape are formed between the inner circumferential ring and the outer circumferential ring so that fluid flows. It is characterized in that the configuration.

In addition, the membrane separation device according to the invention is characterized in that it comprises a telescoping prevention device for the membrane separation device.

According to the present invention, by removing the structure of the wing shape used in the prior art, by including at least two concentric passages are formed through the body portion and a plurality of through-holes formed in a constant shape inside the body portion, durability and The passage securing performance will be further improved.

Specifically, since a plurality of through holes are disposed and the structure of the wing shape is excluded, lighter and stronger durability can be achieved for the same size, and it is excellent in securing the flow path, and is complicated in structure because it is not a fastening structure. It has the advantage of not doing it.

1 is a view showing a schematic form of a conventional telescoping prevention device,
2 is a view schematically showing the reverse osmosis membrane module 100 used in the membrane separation device,
3 is a top side view of the telescoping prevention device 20 according to an embodiment of the present invention,
4 is a cross-sectional view of the telescoping prevention device 20 according to an embodiment of the present invention,
5 is a top side view of the telescoping prevention device 20 'according to another embodiment of the present invention,
6 is a view showing the results of testing the durability of the conventional telescoping prevention device and the telescoping prevention device according to an embodiment of the present invention,
FIG. 7 is a diagram illustrating a test result of a differential pressure a and a velocity variation b of a conventional telescoping prevention device and a telescoping prevention device according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of a telescoping prevention device for membrane separation apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the line or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be described based on the contents throughout the specification.

The term "leaf element" as used herein is a component used in a reverse osmosis membrane module, and refers to a component interposed between spacers such as mesh members between reverse osmosis membranes.

Telescoping  Prevention device 20, 20 'structure

2 is a view schematically showing the reverse osmosis membrane module 100 used in the membrane separation device, Figure 3 is a top side view of the telescoping prevention device 20 according to an embodiment of the present invention, Figure 4 FIG. 5 is a cross-sectional view of a telescoping prevention device 20 according to an embodiment of the present invention, and FIG. 5 is a top side view of the telescoping prevention device 20 'according to another embodiment of the present invention.

2 to 5, the telescoping prevention apparatus 20 according to an embodiment of the present invention will be described in detail.

Reverse osmosis membrane module 100 is a component of the membrane separation device that serves to purify the water actually supplied using the reverse osmosis principle.

The reverse osmosis membrane module 100 may include a permeable carrier 10, a pair of anti-telescoping devices 20 and a water tube 30. Meanwhile, since these components are well-known elements, detailed description thereof will be omitted.

In brief, the transmissive carrier 10 is wound around the water tube 30 with one or more leaf elements attached thereto, and both ends of the transmissive carrier 10 have a pair of telescoping prevention devices ( 20) to be fixed.

At this time, the permeable carrier 10 may serve to introduce the purified water by the reverse osmosis pressure to the water tube 30, the water tube 30 is configured in the form of a shaft and the purified water is collected to the outside The flow path can be discharged.

In addition, the pair of telescoping prevention devices 20 serve to prevent the wound carrier 10 from being stretched (or extended) by a pressure difference between a place where water is introduced and a place where the water flows out. On the other hand, the configuration of the telescoping prevention device 20 will be described later.

The telescoping prevention device 20 may be configured as a body part through which at least two concentric passages are formed. In this case, the outer passage 21 and the inner passage 22 may be connected by a plurality of through holes 23 having a predetermined shape.

The plurality of through holes 23 having a predetermined shape are configured to be repeatedly formed to connect the outer passage 21 and the inner passage 22 and serve as a passage through which fluid can flow.

The plurality of through holes 23 may include any one or more of triangular, square, and polygonal shapes. Preferably, the plurality of through holes 23 may have hexagonal shapes and may be adjacent to each other. . In this case, it is noted that the plurality of through holes 23 may include a honey comb structure.

At this time, it is noted that the thickness of the dividing wall 24 between the plurality of through holes 23 is preferably as thin as possible so long as the durability is secured to improve the flow of the fluid.

The thickness of the dividing wall 24 between the plurality of through holes 23 may be formed to become thicker toward the lower direction (see FIG. 5A). In this case, according to Bernoulli's theorem, the speed of the fluid passing through the narrow passage is increased, so that the fluid moving from the upper side to the lower side can be introduced more quickly.

Meanwhile, the thickness of the dividing wall 24 between the plurality of through holes 23 may be formed to become thinner toward the lower direction (see FIG. 5B). In this case, since the area through which the supplied water flows is widened, the supplied water can be introduced into the reverse osmosis membrane module 100 more effectively.

Here, the shape, shape and number of the plurality of through holes 23 and the thickness of the dividing wall 24 in the telescoping prevention device 20 may be appropriately selected depending on the process conditions and the use environment of the reverse osmosis membrane module 100. Note that it may be changed and used.

Meanwhile, the telescoping prevention device 20 'includes a main body portion composed of an outer circumferential ring portion 21' and an inner circumferential ring portion 22 ', and has a constant shape between the outer circumferential ring portion 21' and the inner circumferential ring portion 22 '. A plurality of through holes 23 ′ may be formed to allow fluid to flow.

In this case, the telescoping prevention device 20 'excludes a wing-shaped structure, and the plurality of through holes 23' are repeatedly formed between the outer circumferential ring 21 'and the inner circumferential ring 22' so that the outer circumference is At the same time as connecting the annular portion 21 'and the inner circumferential ring portion 22' serves as a passage through which the fluid can flow.

The plurality of through holes 23 ′ may include any one or more of triangular, square, and polygonal shapes. Preferably, the plurality of through holes 23 ′ may have a triangular shape or a hexagonal shape, and may be adjacent to each other. It may be to be formed. In this case, it is noted that the plurality of through holes 23 ′ may include a honey comb structure.

At this time, it is noted that the thickness of the dividing wall 24 'between the plurality of through holes 23' is preferably as thin as possible so long as the durability is secured to improve the flow of the fluid.

The thickness of the dividing wall 24 'between the plurality of through holes 23' may be formed to become thicker toward the lower direction. In this case, according to Bernoulli's theorem, the speed of the fluid passing through the narrow passage is increased, so that the fluid moving from the upper side to the lower side can be introduced more quickly.

Meanwhile, the thickness of the dividing wall 24 'between the plurality of through holes 23' may be formed to become thinner in the downward direction. In this case, since the area through which the supplied water flows is widened, the supplied water can be introduced into the reverse osmosis membrane module 100 more effectively.

On the other hand, the shape, shape and number of the plurality of through holes 23 'and the thickness of the dividing wall 24' in the telescoping prevention device 20 'may vary depending on the process conditions and the environment in which the reverse osmosis membrane module 100 is used. Note that it can be changed accordingly accordingly.

As described above, according to the telescoping prevention device 20, 20 'according to the present invention, a structure having a wing shape, which is used in the related art, is removed, and at least two passages are formed in a constant shape inside the main body and the main body. By including a plurality of through-holes 23 and 23 'formed of the resin, durability and flow passage securing performance are further improved.

Telescoping  Prevention device durability comparison

6 is a view showing the results of testing the durability of the conventional telescoping prevention device and the telescoping prevention device according to an embodiment of the present invention.

FIG. 6 (a) uses a conventional telescoping prevention device (FIG. 1 (a) structure, manufactured by DOW Corporation), and FIG. 6 (b) shows a conventional telescoping prevention device (FIG. 1 (b) structure, Nitto Denko Co., Ltd., FIG. 6 (c) uses a conventional telescoping prevention device (FIG. 1 (c) structure, manufactured by NanoH20 Co., Ltd.), and FIG. 6 (d) shows one embodiment of the present invention. The experiment was performed using the telescoping prevention device 20 according to the embodiment.

In particular, considering that the telescoping prevention device is subjected to the pressure (water pressure) of the water passing during operation, and that the telescoping prevention device is deformed by the internal pressure, the endurance analysis is defined as the durability analysis.

To this end, for the four products described above, durability was compared by checking the stress (stress) that occurs when the same internal pressure is applied under different conditions while maintaining the same conditions.

Referring to FIG. 6, the structure (a), which has the largest number of wings, represents about 0.43 Mpa, then the structure (b) represents about 0.54 Mpa, and the structure (d) according to one embodiment of the present invention. Shows about 0.63 Mpa, and (a) shows that the structure shows 1 Mpa.

As a result, considering that the lower the stress generated when the same internal pressure is applied, the more robust and durable, the telescoping prevention device according to an embodiment of the present invention has a relatively good durability despite eliminating the wing-shaped structure. It was confirmed that it possesses.

Telescoping  Prevention device Differential pressure (a)  Flow rate deviation (b) comparison

FIG. 7 is a diagram illustrating a test result of a differential pressure (a) and a flow rate deviation (b) of a conventional telescoping prevention device and a telescoping prevention device according to an embodiment of the present invention.

FIG. 7A illustrates a conventional telescoping prevention device (FIG. 1 (a), manufactured by DOW Corporation), and FIG. 7B illustrates a conventional telescoping prevention device (FIG. 1 (b), Nitto Denko Co., Ltd., FIG. 7 (c) uses a conventional telescoping prevention device (FIG. 1 (c) structure, manufactured by NanoH20 Co., Ltd.), and FIG. 7 (d) shows one embodiment of the present invention. The experiment was performed using the telescoping prevention device 20 according to the embodiment.

In particular, in order to confirm the degree of securing the flow path of the telescoping device, the flow analysis was defined as checking the flow rate and pressure before and after passing through the telescope device by connecting two reverse osmosis membrane modules.

To this end, for the four products described above, the degree of securing the flow path was compared by checking the flow rate deviation and the differential pressure generated when the same flow rate was injected while maintaining the same conditions under the same conditions.

Referring to FIG. 7A, the structure (d) according to an embodiment of the present invention exhibits a flow rate deviation of about 0.09, the structure (a) shows a flow rate deviation of about 0.19, and then the structure (b) It can be seen that the flow rate deviation is about 0.48, and (d) the structure shows the flow rate deviation of about 1.

Referring also to Figure 7 (b), according to an embodiment of the present invention (d) structure represents a differential pressure of about 0.18 Pa, (a) structure represents a differential pressure of about 0.17 Pa, then (b) structure Shows a differential pressure of about 0.9 Pa, and (d) shows a differential pressure of about 1 Pa.

As a result, considering that the flow rate deviation value is lower than the average, and the differential pressure is lower, the structure is advantageous in terms of flow. Securing the euro was found to be favorable.

Although described above with reference to a preferred embodiment of the present invention, those of ordinary skill in the art various modifications and variations of the present invention within the scope and spirit of the present invention described in the claims below It will be appreciated that it can be changed.

10: permeable carrier
20, 20 ': telescoping prevention device
21: outer passage 22: inner passage
21 ': Outsourcing return 22': Insulation return
23, 23 ': plurality of through holes
24, 24 ': partition wall
30: water tube
100: reverse osmosis membrane module

Claims (15)

delete delete delete delete delete delete delete A telescoping prevention device, wherein at least one leaf element is attached and secured to both ends of a permeable carrier that is wound about a water tube.
It includes; the main body portion consisting of the inner circumferential ring and the outer circumferential ring that is introduced into the water tube,
A plurality of through holes having a hexagonal shape between the inner circumferential ring and the outer circumferential ring; And
A partition wall between the plurality of through holes;
The thickness of the partition wall,
Characterized in that formed to become thinner toward the lower direction,
Telescoping prevention device for membrane separation device.
The method of claim 8,
Wherein the plurality of through-holes, characterized in that it comprises any one or more of the form of a triangle, a square, a polygon,
Telescoping prevention device for membrane separation device.
The method of claim 8,
The plurality of through holes is characterized in that it is formed repeatedly,
Telescoping prevention device for membrane separation device.
The method of claim 8,
The plurality of through holes are formed adjacent to each other,
Telescoping prevention device for membrane separation device.
The method of claim 8,
And the plurality of through holes comprise a honey comb structure.
delete delete A telescoping prevention device for a membrane separation device according to any one of claims 8 to 12,
Membrane separation device.

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