CN216878783U

CN216878783U - Testing arrangement at dirty stifled position of short-term test RO membrane element

Info

Publication number: CN216878783U
Application number: CN202220535774.4U
Authority: CN
Inventors: 杨婉茜; 李存山; 翁学飞
Original assignee: Guangzhou New Energy Water Treatment Co ltd
Current assignee: Guangzhou New Energy Water Treatment Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-05
Anticipated expiration: 2032-03-10

Abstract

The utility model relates to the field of water treatment, and particularly discloses a test device for rapidly detecting a dirt blocking part of an RO (reverse osmosis) membrane element. The whole set of testing device is simple in structure, small in size, convenient and fast to connect components and convenient to transfer. During testing, by observing the numerical values of the flow meter and the pressure gauge, the blockage position can be judged to be positioned in the concentrated water channel or the cortex after simple operation, the testing time is short, and the efficiency is high; on the basis, the dirty and blocked part can be immediately judged on site, and then a cleaning scheme is made by timely taking medicines according to symptoms.

Description

Testing arrangement at dirty stifled position of short-term test RO membrane element

Technical Field

The utility model belongs to the field of water treatment, and particularly relates to a testing device for rapidly detecting a dirt blocking part of an RO (reverse osmosis) membrane element.

Background

At present, the membrane treatment technology is widely applied to the water treatment industry due to the high-efficiency separation capability. With the long-term use of the membrane element, pollutants can be continuously accumulated, and the pollutants further block membrane pores, namely, the water passing capacity or desalination capacity of the membrane element can be reduced after the membrane element is used for a long time. The specific phenomenon is represented by a rise in the differential pressure and a fall in the amount of water flow. In actual use, a user can only know the water flow reduction or the pressure difference change of the filtering system from the outside, and can only comprehensively judge the blockage of the membrane element, so that the pollution and blockage part is difficult to judge. Can take off the film element and put into corresponding detection device, but detection device is bulky, remove inconvenient, and the testing process is consuming time and is hard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a testing device for rapidly detecting a fouling part of an RO membrane element, which can rapidly measure the pressure difference of the membrane element and can find the fouling part by utilizing pressure difference data.

In order to achieve the aim, the utility model provides a plurality of pipelines, a plurality of valves, a water tank, a high-pressure pump, a filter and a pressure container which are connected in series in sequence, the water tank is provided with a water inlet, a water return port, a water outlet and a water delivery port, the water delivery port of the water tank is connected with the high-pressure pump, the water inlet and the water outlet of the high-pressure pump are both provided with valves, the high-pressure pump is connected with an electric control box, the water inlet and the water outlet of the filter are both provided with pressure gauges, the pressure container is provided with a water inlet, a water producing port and a dense water port, the interior of the pressure container is used for accommodating a membrane element, a water inlet of the pressure container is connected with a water outlet of the high-pressure pump, a water production port of the pressure container is sequentially provided with a flowmeter and a valve and is communicated with a water return port of the water tank, and a concentrated water port of the pressure container is sequentially provided with a pressure gauge, a flowmeter and a valve and is communicated to a water return port of the water tank.

As an improvement of the scheme, the water inlet, the water return port, the water outlet and the water delivery port of the water tank are respectively provided with a valve, the water inlet and the water return port are positioned on the upper side of the water tank, and the water outlet and the water delivery port are positioned on the lower side of the water tank.

As an improvement of the above scheme, the pressure vessel includes a housing and an end cap, the end cap is detachably mounted on an end portion of the housing, and a membrane element can be put into the housing after the end cap is opened.

As an improvement of the scheme, the electric control box is connected with the three pressure gauges and the two flow meters to obtain corresponding parameters.

As a modification of the above scheme, each valve is a manual valve.

Compared with the prior art, the utility model has the following beneficial effects: the whole set of testing device is simple in structure, small in size, convenient and fast to connect components and convenient to transfer. During testing, the blocking position can be judged to be positioned in a concentrated water channel or a cortex layer through simple operation by observing the numerical values of the flow meter and the pressure gauge, the testing time is short, and the efficiency is high; on the basis, the dirty and blocked part can be judged immediately on site, and then a cleaning scheme is formulated timely according to the symptoms.

Drawings

FIG. 1 is a schematic diagram of a test apparatus according to an embodiment.

Description of the main reference numerals: 11. a water tank; 12. a filter; 13. a high pressure pump; 14. a pressure vessel; 15. an electric cabinet; 21. a pressure gauge; 22. a flow meter; 23. and (4) a valve.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The terms "first", "second" and "third", if any, are used for descriptive purposes only and for distinguishing between technical features and are not to be construed as indicating or implying relative importance or implying a number of indicated technical features or a precedence of indicated technical features.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1, the utility model discloses a testing device for rapidly detecting a fouling part of an RO membrane element, comprising: the testing device comprises a plurality of pipelines, a plurality of valves 23, a water tank 11, a high-pressure pump 13 filter 12 and a pressure container 14 which are sequentially connected in series, and the testing device further comprises an electric cabinet 15 for controlling the key components. The filtering process comprises the following steps: water tank 11-high pressure pump 13-filter 12-pressure vessel 14.

The water tank 11 is made of normal-pressure PE materials, and a cylinder or a cube can be selected in modeling. As shown in the figure, the water tank 11 has a water return opening with a water inlet at the upper left corner and at the upper right corner, a water discharge opening at the lower left corner, and a water delivery opening at the lower right corner, the water discharge opening and the water delivery opening being remote from each other. The water inlet is connected with municipal tap water for testing, and the water tank 11 is filled with water for standby before the test. The water outlet is externally connected with a water collecting barrel or directly discharged. Preferably, the water inlet, the water return port, the water outlet and the water delivery port of the water tank 11 are provided with valves 23.

The water outlet of the filter 12 is connected with a pressure gauge 21, then connected with a valve 23 and finally communicated with the pressure container 14. Pressure gauges 21 are arranged at the water inlet and the water outlet of the filter 12, so that whether the pressure difference of the filter 12 is normal or not, whether a filter element needs to be replaced or not and the like can be conveniently monitored.

A valve 23 is arranged at the water outlet of the high-pressure pump 13. The high-pressure pump 13 runs in a frequency conversion mode, pumps water from the water tank 11 and conveys the water to the right. Preferably, the water outlet of the high-pressure pump 13 is provided with a regulating valve. The high-pressure pump 13 is connected with the electric cabinet 15 and is controlled by the electric cabinet 15. Preferably, a corresponding instrument panel or a corresponding display screen is arranged on the electric cabinet 15 and is used for displaying corresponding information; for example, the parameters of the pressure gauge 21 and the flow meter 22 are displayed on the electric control box 15, and the display screen directly displays the conclusion judged by the computer.

The pressure container 14 is provided with a water inlet, a water producing port and a water concentration port, the pressure container 14 is used for accommodating one membrane element, the water inlet of the pressure container 14 is connected with the water outlet of the high-pressure pump 13, the water producing port of the pressure container 14 is sequentially provided with a flow meter 22 and a valve 23 and is communicated with the water return port of the water tank 11, and the water concentration port of the pressure container 14 is sequentially provided with a pressure meter 21, a flow meter 22 and a valve 23 and is communicated with the water return port of the water tank 11. As shown in the figure, the water producing port is positioned at the right end, and the thick water port is positioned at the lower part of the right end. And the water tested by the pressure container 14 is converged and then flows back to the water tank 11 for recycling. The pressure vessel 14 is a conventional product and includes a housing having a generally cylindrical shape and an end cap removably mounted to an end of the housing, the end cap being openable to allow insertion of a membrane element into the housing.

In one embodiment, the valve 23 is a manual valve, which facilitates testing and adjusting the flow rate of the device. When the RO membrane is used, the water tank 11 is filled with water, then the end cover of the water inlet of the pressure container 14 is removed, the RO membrane element to be detected is pushed into the pressure container 14, and the end cover is covered again. After the opening, a valve 23 of the water outlet of the water tank 11, a valve 23 of the water inlet of the high-pressure pump 13, and a valve 23 of the water outlet of the high-pressure pump 13. And starting the high-pressure pump 13, injecting water in the water tank 11 into the pressure container 14, forming a fresh water flow (a produced water flow) and a concentrated water flow after passing through a concentrated water channel of the RO membrane element, and finally converging the two flows of water to the water tank 11 after passing through an instrument.

Adjusting a valve 23 corresponding to the dense water port until the water production flow reaches 15% of the water inflow of the RO membrane element, adjusting the valve 23 at the water outlet of the high-pressure pump 13, gradually increasing the operating pressure to the standard test pressure of the RO membrane element, and observing the pressure changes of the water inlet and the dense water port; the differential pressure here is the inlet pressure of the pressure vessel 14 to the concentrate outlet pressure of the pressure vessel 14. When the pressure difference is increased and the water yield is normal, the water is the sewage blockage of the concentrated water channel; when the water inlet pressure rises, the pressure difference keeps unchanged or the rising amplitude is small, and the reduction of the water production flow can be judged as the cortex dirt blocking.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. The utility model provides a short-term test RO membrane element pollutes testing arrangement who blocks up position which characterized in that includes: a plurality of pipelines, a plurality of valves, a water tank, a high-pressure pump, a filter and a pressure container which are connected in series in turn, the water tank is provided with a water inlet, a water return port, a water outlet and a water delivery port, the water delivery port of the water tank is connected with the high-pressure pump, the water inlet and the water outlet of the high-pressure pump are both provided with valves, the high-pressure pump is connected with an electric control box, the water inlet and the water outlet of the filter are both provided with pressure gauges, the pressure container is provided with a water inlet, a water producing port and a dense water port, the interior of the pressure container is used for accommodating a membrane element, a water inlet of the pressure container is connected with a water outlet of the high-pressure pump, a water production port of the pressure container is sequentially provided with a flowmeter and a valve and is communicated with a water return port of the water tank, and a concentrated water port of the pressure container is sequentially provided with a pressure gauge, a flowmeter and a valve and is communicated to a water return port of the water tank.

2. The test device of claim 1, wherein: the water inlet, the water return port, the water outlet and the water delivery port of the water tank are all provided with valves, the water inlet and the water return port are located on the upper side of the water tank, and the water outlet and the water delivery port are located on the lower side of the water tank.

3. The test device of claim 2, wherein: the pressure vessel comprises a shell and an end cover, wherein the end cover is detachably arranged at the end part of the shell, and membrane elements can be placed into the shell after the end cover is opened.

4. The test device of claim 3, wherein: the electric control box is connected with the three pressure gauges and the two flow meters to obtain corresponding parameters.

5. The test device of claim 4, wherein: each valve is a manual valve.