Membrane filament leakage point detection device for hollow fiber membrane bundle of column type membrane module

Abstract

The utility model relates to a column type membrane assembly hollow fiber membrane bundle membrane filament leakage point detection device, which comprises a support, a base, a detection pipe group and a plug, an installation cavity is formed in the support, the base is connected with the bottom of the installation cavity through the detection pipe group, a positioning groove is arranged at the top of the base, an air inlet and a water outlet are arranged in the positioning groove, and the plug is connected with the air inlet. The detection pipe group is provided with a drainage channel and an air inlet channel, the drainage channel is communicated with the drainage port, the air inlet channel is communicated with the air inlet, and the plug is detachably connected to the top of the mounting cavity. According to the technical scheme, the leakage point detection device can be used for comprehensively detecting the whole hollow fiber membrane bundle membrane filaments of the column type membrane module and determining the membrane filaments with damaged surfaces, so that the damaged membrane filaments can be conveniently and accurately repaired, and the corresponding column type membrane module is ensured to efficiently produce water.

Description

TECHNICAL FIELD

[0001] The utility model relates to membrane equipment detection technical field more particularly is a kind of hollow fiber membrane bundle membrane silk leak point detection device in column type membrane module. BACKGROUND

[0002] Column type membrane module is overall cylindrical structure, it is composed of porous center support tube and hollow fiber membrane bundle wrapped around it, wherein, hollow fiber membrane bundle occupies the core position in whole column type membrane module, the working principle of column type membrane module is just based on the selective permeability of hollow fiber membrane bundle, when the liquid containing different components enters column type membrane module, under the action of driving force such as pressure difference or concentration difference, certain components can permeate hollow fiber membrane bundle membrane silk, while other components are retained on the surface, such characteristics make column type membrane module be widely used in water treatment, food and beverage industry, pharmaceutical and other fields, therefore, leak point detection is necessary link for hollow fiber membrane bundle of column type membrane module to leave factory.

[0003] At present, the Chinese patent with publication number CN205868028U discloses a kind of column curtain type membrane module detection leak repairing device, it includes air pump, the container for containing column curtain type membrane module, locking mechanism, container upper opening and form the inner chamber capable of accommodating column curtain type membrane module in inside, the outside of container is also provided with the air inlet valve and exhaust valve respectively communicated with inner chamber, air inlet valve is sealingly connected with air pump, column curtain type membrane module can be placed into the inner chamber of container from the upper opening of container, locking mechanism can lock and fix column curtain type membrane module with container and make column curtain type membrane module and inner chamber sealingly connected, locking mechanism also includes enclosure, when locking mechanism locks and fixes column curtain type membrane module with container, enclosure is sealingly connected with the upper end edge of column curtain type membrane module, enclosure is peripherally arranged in the outer periphery of membrane silk of column curtain type membrane module, the inner periphery of enclosure and the upper end portion of column curtain type membrane module form the cavity capable of containing detection liquid.

[0004] When using the above leak point detection device to detect leak point, first, place the column curtain type membrane module to be detected into the container, open the air cylinder pusher to make the enclosure move downward and press on column curtain type membrane module. Then pour a certain amount of liquid in the cavity formed by enclosure and upper end portion of column curtain type membrane module, so that the liquid can cover the end of all membrane silk holes, then open the air inlet valve, start the air pump, and make air with certain pressure enter the inner chamber of container. At this time, the bubble condition of membrane silk hole can be observed, and the leaky membrane silk can be accurately repaired. Therefore, the above leak point detection device can only determine whether the upper end portion of hollow fiber membrane bundle membrane silk is damaged during actual leak point detection process, and cannot detect the whole membrane silk, so the hollow fiber membrane bundle membrane silk detected by the leak point detection device may be damaged in other parts except the upper end portion, which causes the corresponding column type membrane module to be unable to produce water efficiently. UTILITY MODEL CONTENT

[0005] To address the above issues, and to overcome the problem that existing leak detection devices can only determine whether there is damage to the upper part of the hollow fiber membrane bundle filaments in a column membrane module, and cannot perform overall detection of the filaments, resulting in the possibility that even qualified hollow fiber membrane bundle filaments may still have potential damage in other parts besides the upper part, the purpose of this invention is to provide a leak detection device that can comprehensively detect the entire hollow fiber membrane bundle filaments in a column membrane module, identify filaments with surface damage, and thus facilitate accurate repair of damaged filaments, ensuring efficient water production of the corresponding column membrane module.

[0006] To achieve the above objectives, the technical solution of this utility model is:

[0007] A leak detection device for hollow fiber membrane bundles in a columnar membrane module includes a support, a base, a detection tube assembly, and a plug. The support has an installation cavity, the base is connected to the bottom of the installation cavity through the detection tube assembly, the top of the base has a positioning groove, and the positioning groove has an air inlet and a drain outlet. The detection tube assembly has a drain channel and an air inlet channel, the drain channel is connected to the drain outlet, the air inlet channel is connected to the air inlet, and the plug is detachably connected to the top of the installation cavity.

[0008] Preferably, the detection tube assembly includes a drain pipe and a drain valve, with the drain channel located in the drain pipe, one end of the drain pipe connected to the drain outlet, and the drain valve located on the drain pipe.

[0009] Preferably, the detection tube assembly also includes an air inlet pipe and an air inlet valve. The air inlet pipe has an air outlet, and the air inlet channel is located in the air inlet pipe. One end of the air inlet pipe is connected to the air inlet, and the other end is connected to the bracket. The air inlet valve is located on the air inlet branch pipe.

[0010] Preferably, the plug is detachably connected to the bracket by bolts.

[0011] Preferably, steps are formed sequentially on the inner wall of the positioning groove.

[0012] Preferably, the bracket includes a top frame, a bottom frame, and side frames, with two sets of side frames. The left and right ends of the top frame and the bottom frame are connected by the side frames, and the mounting cavity is located between the top frame, the bottom frame, and the side frames.

[0013] Preferably, the bracket also includes a first limiting frame and a second limiting frame. Both the first limiting frame and the second limiting frame are L-shaped. One end of the first limiting frame is connected to the bottom frame and the other end extends towards the top frame. One end of the second limiting frame is connected to the top frame and the other end extends towards the bottom frame.

[0014] Compared with the prior art, the advantages of the utility model lie in:

[0015] The utility model discloses a leak point detection device, when the membrane silk of hollow fiber membrane bundle in the column type membrane assembly is detected, directly utilize the porous center support pipe from top to bottom to deliver liquid to the membrane shell, ensure that all membrane silk can be liquid infiltration, and utilize the porous center support pipe from bottom to top to deliver gas, ensure that the gas pressure can be evenly acted on the surface of every membrane silk, if the membrane silk surface exists breakage, the gas will enter the membrane silk inside through the breakage, and the bubble is formed at the upper opening of the membrane silk, make the detection personnel can accurately position and repair the membrane silk of surface breakage, realize overall detection, ensure that the column type membrane assembly of test can efficiently produce water. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model leak point detection device;

[0017] Figure 2 It is the partial structure schematic diagram of the lower part of the utility model leak point detection device;

[0018] Figure 3 It is the partial structure schematic diagram of the upper part of the utility model leak point detection device;

[0019] Figure 4 It is the partial structure schematic diagram of another view of the lower part of the utility model leak point detection device;

[0020] Figure 5 It is the exploded structure schematic diagram of the existing column type membrane assembly;

[0021] Figure 6 It is the overall structure schematic diagram when the existing column type membrane assembly is installed to the utility model leak point detection device.

[0022] As shown in the figure:

[0023] 1, support;1a, installation cavity;101, top frame body;102, bottom frame body;103, side frame body;104, first limit frame body;105, second limit frame body;2, base;201, positioning groove;201a, gas inlet;201b, drain outlet;201c, step position;3, detection pipe group;3a, drainage channel;3b, gas inlet channel;301, drain pipe;302, drain valve;303, gas inlet pipe;303a, gas delivery port;304, gas inlet valve;4, plug;5, bolt;6, column type membrane assembly;601, membrane shell;602, porous center support pipe;603, hollow fiber membrane bundle;603a, membrane silk. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0025] In the description of the utility model, it is to explain that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the utility model product is usually placed, which is only for the convenience of simplifying the description, and does not indicate or imply that the orientation must have a specific orientation and a specific orientation structure and operation, so it cannot be understood as a limitation on the utility model.

[0026] As Figure 1 , Figure 2 , Figures 4 to 6As shown, a kind of hollow fiber membrane bundle membrane leak point detection device in column type membrane module, it includes support 1, base 2, detection tube group 3 and plug 4, wherein, support 1 is formed with installation cavity 1a, installation cavity 1a is matched with the column type membrane module 6 to be detected, for installing the column type membrane module 6 to be detected, base 2 is close to the bottom of installation cavity 1a, base 2 is connected with the bottom of installation cavity 1a by detection tube group 3, so it is supported by detection tube group 3, the top of base 2 is provided with positioning groove 201, positioning groove 201 is the groove type groove, for the bottom of the column type membrane module 6 to be detected is embedded to form the matching, effectively limit the movement of column type membrane module 6, positioning groove 201 is provided with air inlet 201a and drainage outlet 201b, air inlet 201a and drainage outlet 201b are all through with the bottom of base 2, and air inlet 201a is located at the center position of positioning groove 201, when column type membrane module 6 is installed to base 2, air inlet 201a can be directly opposite with the multi-hole center support pipe 602, ensure that the airflow can be accurately input into the multi-hole center support pipe 602 of column type membrane module 6 when air intake, detection tube group 3 has drainage passage 3a and air inlet passage 3b, drainage passage 3a is communicated with drainage outlet 201b for drainage, air inlet passage 3b is communicated with air inlet 201a for gas supply to base 2 direction, plug 4 is detachably connected to the top of installation cavity 1a, the position of plug 4 is opposite to the air inlet 201a of the center position of positioning groove 201, plug 4 is used to close the top of multi-hole center support pipe 602, during leak point detection, first, plug 4 is removed to input liquid into the multi-hole center support pipe 602 of column type membrane module 6, liquid overflows from the hole position on the surface to membrane shell 601 when passing through multi-hole center support pipe 602, so as to immerse the membrane filament 603a of hollow fiber membrane bundle 603, ensure that liquid enters the inside of membrane filament 603a for a certain period of time, then the liquid accumulated in membrane shell 601 is emptied by drainage passage 3a of detection tube group 3, at this time, part of liquid is still attached to the inner and outer walls of membrane filament 603a, to form liquid film, then plug 4 is installed back, and gas is input to base 2 direction through exhaust passage, airflow enters multi-hole center support pipe 602 after passing through exhaust passage, also enters membrane shell 601 from the hole position on the surface, and generates gas pressure on the surface of membrane filament 603a, for the membrane filament 603a with damage on the surface, gas will destroy the liquid film at the damage position and enter the inside of the membrane filament 603a, and the liquid accumulated in the inside of membrane filament 603a will be carried to the upper opening thereof, so as to form bubbles, detection personnel marks the membrane filament 603a with bubbles to facilitate subsequent repair, the leak point detection device of the utility model can directly use multi-hole center support pipe 602 to transport liquid into membrane shell 601 from top to bottom when detecting the leak point of membrane filament 603a of hollow fiber membrane bundle 603 in column type membrane module 6, ensure that all membrane filaments 603a can be immersed by liquid, and gas is input from bottom to top by using multi-hole center support pipe 602,Ensure that the gas pressure can be evenly on the surface of each membrane 603a, if the membrane 603a surface exists breakage, gas will enter the membrane 603a inside through the breakage, and form bubbles at the upper opening of the membrane 603a, enable the detection personnel to accurately on the surface of the broken membrane 603a positioning and repair, realize comprehensive detection, ensure that the test column membrane module 6 can produce water efficiently.

[0027] As shown in Figure 2 , Figure 4 and Figure 6 , the detection pipe group 3 includes a drain pipe 301 and a drain valve 302, a drain passage 3a is located in the drain pipe 301, one end of the drain pipe 301 is communicated with the drain port 201b, the drain valve 302 is arranged on the drain pipe 301, and the drain valve 302 is used for controlling the opening and closing of the drain passage 3a, so that the liquid can be kept in the membrane shell 601 during the liquid immersion process of the membrane 603a, and the liquid is prevented from leaking out, and when the immersion is completed, the drain passage 3a is opened, and the liquid in the membrane shell 601 can be quickly emptied through the drain pipe 301.

[0028] As shown in Figure 2 , Figure 4 and Figure 6 , the detection pipe group 3 further includes an air inlet pipe 303 and an air inlet valve 304, the side wall of the air inlet pipe 303 is provided with an air inlet port 303a, an air inlet passage 3b is located in the air inlet pipe 303, air is supplied to the air inlet passage 3b through the air inlet port 303a, one end of the air inlet pipe 303 is communicated with the air inlet port 201a, and the other end is connected with the support 1, the air inlet valve 304 is arranged on the air inlet branch pipe, and the air inlet valve 304 is used for controlling the opening and closing of the air inlet passage 3b, so as to prevent the gas from leaking after entering the inside of the membrane shell 601.

[0029] As shown in Figure 1 , Figure 3 and Figure 6 , the plug 4 is detachably connected with the support 1 through the bolt 5, the plug 4 is quickly disassembled through threaded connection, and the self-locking of the threaded connection can stably fix the plug 4 in the mounting cavity 1a, so as to form close cooperation with the multi-hole center support pipe 602 of the column membrane module 6, and improve the sealing effect.

[0030] As shown in Figure 2 , the inner wall of the positioning groove 201 is sequentially formed with a step position 201c, and it is necessary to mention that the step position 201c has at least one group, and the base 2 forms a step cooperation with the lower end of the column membrane module 6 through the step position 201c, so as to change the gap direction of the cooperation position, form a labyrinth-like zigzag cooperation gap, thereby reducing the possibility of liquid or gas leakage from the cooperation position, and further improving the sealing performance.

[0031] As shown in Figure 1As shown, the bracket 1 is composed of a top frame body 101, a bottom frame body 102 and a side frame body 103, wherein the side frame body 103 has two groups, the left and right ends of the top frame body 101 and the bottom frame body 102 are connected through the side frame body 103, thereby enclosing a frame structure, in order to improve the structural strength, the top frame body 101, the bottom frame body 102 and the side frame body 103 can be fixed by welding, and the mounting cavity 1a is located between the top frame body 101, the bottom frame body 102 and the side frame body 103.

[0032] As shown in Figure 1 and Figure 6 The bracket 1 further comprises a first limiting frame body 104 and a second limiting frame body 105, the shapes of the first limiting frame body 104 and the second limiting frame body 105 are both L-shaped, one end of the first limiting frame body 104 is connected with the bottom frame body 102, and the other end extends to the direction of the top frame body 101, one end of the second limiting frame body 105 is connected with the top frame body 101, and the other end extends to the direction of the bottom frame body 102, the first limiting frame body 104 and the second limiting frame body 105 are used for positioning the column type membrane module 6, after the column type membrane module 6 is installed on the base 2, the first limiting frame body 104 and the second limiting frame body 105 can abut against the surface thereof, thereby.

[0033] In combination with Figures 1 to 6, when the leak detection device is used to detect the membrane filament 603a of the hollow fiber membrane bundle 603 in the column type membrane module 6, first, the column type membrane module 6 needs to be installed, the column type membrane module 6 is placed into the mounting cavity 1a of the support 1, and the lower end is embedded into the positioning groove 201 of the base 2, precise installation is realized through cooperation with the step position 201c in the positioning groove 201 and resistance of the first limiting frame body 104 and the second limiting frame body 105, then the drainage valve 302 and the air inlet valve 304 on the test pipe group drainage pipe 301 and the air inlet pipe 303 are closed, the plug 4 is taken out from the mounting cavity 1a, liquid is input into the porous center support pipe 602 of the column type membrane module 6, when the liquid passes through the porous center support pipe 602, overflow from the hole position on the surface to the membrane shell 601, so that the membrane filament 603a of the hollow fiber membrane bundle 603 is soaked, and after a certain time, it is ensured that the liquid enters the inside of the membrane filament 603a, then the drainage valve 302 is opened, the liquid in the membrane shell 601 is emptied, then the plug 4 is installed back to seal the upper end of the porous center support pipe 602, and the air inlet valve 304 is opened, the gas is input to the base 2 direction through the exhaust passage, after the gas flow passes through the exhaust passage, it enters the porous center support pipe 602, also enters the membrane shell 601 through the hole position on the surface, and generates gas pressure on the surface of the membrane filament 603a, for the membrane filament 603a with damage on the surface, the gas will damage the liquid film at the damage position to enter the inside of the membrane filament 603a, and is discharged from the upper opening of the membrane filament 603a, at this time, the liquid accumulated in the inside of the membrane filament 603a is carried to the upper opening thereof, so that the bubble is formed, the detector marks the membrane filament 603a with the formed bubble, so as to be repaired subsequently.

[0034] The above embodiments and descriptions in the specification are only to illustrate the principles and the best embodiments of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A device for detecting leaks in membrane filaments of a hollow fiber membrane bundle in a column membrane module, characterized by, It includes support (1), base (2), detection tube group (3) and plug (4), the support (1) is formed with mounting cavity (1a), the base (2) is connected with the bottom of mounting cavity (1a) by detection tube group (3), the top of base (2) is provided with positioning groove (201), the positioning groove (201) is provided with air inlet (201a) and drain outlet (201b), the detection tube group (3) has drainage channel (3a) and air inlet channel (3b), the drainage channel (3a) is communicated with drain outlet (201b), the air inlet channel (3b) is communicated with air inlet (201a), the plug (4) is detachably connected to the top of mounting cavity (1a).

2. A device for detecting leaks in membrane filaments of a bundle of hollow fiber membranes in a column module according to claim 1, characterized in that The detection tube group (3) includes drain pipe (301) and drain valve (302), drainage channel (3a) is located in drain pipe (301), one end of drain pipe (301) is communicated with drain outlet (201b), drain valve (302) is arranged on drain pipe (301).

3. A device for detecting leaks in membrane filaments of a bundle of hollow fibre membranes of a column module according to claim 2, characterised in that The detection tube group (3) further includes air inlet pipe (303) and air inlet valve (304), the air inlet pipe (303) is provided with air inlet (303a), air inlet channel (3b) is located in air inlet pipe (303), one end of air inlet pipe (303) is communicated with air inlet (201a), the other end is connected with support (1), air inlet valve (304) is arranged on air inlet pipe.

4. A device for detecting leaks in membrane filaments of a bundle of hollow fibres of a column module according to any one of claims 1 to 3, characterised in that The plug (4) is detachably connected with the support (1) by bolts (5).

5. A device for detecting leaks in membrane filaments of a bundle of hollow fibre membranes of a column module according to claim 4, characterised in that The inner wall of positioning groove (201) is sequentially formed with step position (201c).

6. A device for detecting leaks in the membrane filaments of a bundle of hollow fibre membranes in a column module according to any one of claims 1, 2, 3 or 5, characterised in that, The support (1) includes top frame body (101), bottom frame body (102) and side frame body (103), the side frame body (103) has two groups, the left and right ends of top frame body (101) and bottom frame body (102) are connected by side frame body (103), mounting cavity (1a) is located between top frame body (101), bottom frame body (102) and side frame body (103).

7. A device for detecting leaks in membrane filaments of a bundle of hollow fibre membranes of a column module according to claim 6, characterised in that The support (1) further includes first limiting frame body (104) and second limiting frame body (105), the shape of first limiting frame body (104) and second limiting frame body (105) is L-shaped, one end of first limiting frame body (104) is connected with bottom frame body (102), the other end extends to the direction of top frame body (101), one end of second limiting frame body (105) is connected with top frame body (101), the other end extends to the direction of bottom frame body (102).

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