Pipeline integrated external pressure type ultrafiltration skid-mounted device

Abstract

The utility model provides a pipeline integrated external pressure type ultrafiltration skid-mounted device, which belongs to the technical field of external pressure type ultrafiltration membrane process, and comprises a water inlet, a gas inlet, a water production port and a concentrated water port, the water inlet is connected with a water inlet branch pipe, a chemical cleaning water inlet branch pipe, a chemical cleaning emptying branch pipe and a backwashing emptying branch pipe of the pipeline skid; the air inlet is connected with an air washing branch pipe of the pipeline skid; the water production port is connected with a water production branch pipe, a backwashing water inlet branch pipe and a water production end exhaust pipe of the pipeline skid; and the concentrated water port is connected with a concentrated water pipe of the pipeline skid, a backwashing drainage branch pipe, a chemical cleaning circulation branch pipe and a concentrated water end exhaust pipe. Overall skid-mounting of the membrane module device, branch pipelines, main valves, main control instruments and an electric control cabinet is achieved, the structure is compact, space utilization is maximized, mounting and inspection can be completed before delivery, project quality can be guaranteed, complicated butt joint work in the construction process can be reduced, mounting cost is greatly reduced, and the construction efficiency is improved. And the engineering period is more controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of external pressure ultrafiltration membrane technology, in particular to a pipeline-integrated external pressure ultrafiltration skid-mounted device. Background Art

[0002] External pressure ultrafiltration technology is widely used in municipal water supply, ultrapure water, lithium extraction from salt lakes, recycled water reuse, seawater desalination, industrial wastewater treatment and other fields. It can be used to remove particles, colloids, bacteria, viruses, heat sources, proteins and large molecular organic matter in water, greatly improving the biological safety of water. It can also be used as a pretreatment process for nanofiltration / reverse osmosis to steadily reduce the SDI value and reduce the operating load of the desalination membrane. The ultrafiltration system includes an inlet unit, a water production unit, a concentrate unit, a backwash unit, an air wash unit, a chemical cleaning unit, and a drainage unit. It has a high degree of automation, complex pipelines, and many valves and instruments. Nowadays, municipal water plants have increasingly higher requirements for ease of operation and maintenance, display, space saving, and operational stability. For this reason, a system skid-mounted device with both reasonable design and aesthetic features is particularly important.

[0003] In existing conventional ultrafiltration process technology solutions, the ultrafiltration membrane module is a separate skid-mounted device, and each pipeline is designed separately. During the installation phase, construction is carried out according to the drawings. Due to the complexity of the system pipelines, a large amount of complicated docking work will be generated on site, making installation difficult and the construction period long. In addition, with respect to the valve settings of conventional ultrafiltration membrane technology solutions, air compressors can better achieve the cleaning effect of air scrubbing compared to blowers. However, due to the high compressed air pressure, air scrubbing can easily cause pipeline vibration, and conventional solutions lack corresponding anti-vibration measures. Secondly, exhaust at the water production end is generally achieved by installing an automatic breathing valve at the high point of the water production pipe. The breathing valve is a mechanical exhaust valve. When switching steps, pressure fluctuations can easily cause water leakage, thereby affecting the normal operation of the system. Currently, there is no effective solution. Utility Model Content

[0004] The purpose of the utility model is to provide a pipeline-integrated external pressure ultrafiltration skid-mounted device to solve at least one technical problem existing in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a pipeline-integrated external pressure ultrafiltration skid-mounted device, comprising: an ultrafiltration membrane assembly and a pipeline skid; the ultrafiltration membrane assembly comprises a water inlet, an air inlet, a production water inlet and a concentrate water inlet; the pipeline skid comprises a water inlet branch, a chemical cleaning water inlet branch, a chemical cleaning drain branch, a backwash drain branch, an air washing branch, a production water branch, a backwash water inlet branch, a production water end exhaust pipe, a concentrate water pipe, a backwash drainage branch, a chemical cleaning circulation branch and a concentrate water end exhaust pipe;

[0007] Among them, the water inlet is connected to the water inlet branch, the chemical cleaning water inlet branch, the chemical cleaning drain branch and the backwash drain branch; the air inlet is connected to the air washing branch; the water production port is connected to the water production branch, the backwash water inlet branch and the water production end exhaust pipe; the concentrate port is connected to the concentrate pipe, the backwash drainage branch, the chemical cleaning circulation branch and the concentrate end exhaust pipe.

[0008] Furthermore, the water inlet, the concentrated water outlet and the water production outlet are all equipped with pressure transmitters.

[0009] Furthermore, the water inlet branch pipe is provided with an automatic water inlet valve; the chemical cleaning water inlet branch pipe is provided with an automatic chemical cleaning water inlet valve; the backwash drain branch pipe is provided with an automatic backwash drain valve; the chemical cleaning drain branch pipe is provided with an automatic chemical cleaning drain valve.

[0010] Furthermore, an automatic air intake valve is provided on the air washing branch pipe, and a flexible joint is provided on the air washing branch pipe between the automatic air intake valve and the air inlet.

[0011] Furthermore, the concentrated water pipe is provided with an automatic concentrated water valve; the backwash drainage branch pipe is provided with an automatic backwash drainage valve.

[0012] Furthermore, the water production end exhaust pipe is provided with a water production end exhaust automatic valve; the backwash water inlet branch pipe is provided with a backwash water inlet automatic valve; the water production branch pipe is provided with a water production automatic valve.

[0013] Furthermore, an online turbidity meter is provided on the water production branch pipe.

[0014] Furthermore, an electromagnetic flowmeter is provided on the water production branch pipe.

[0015] Furthermore, the chemical cleaning circulation branch pipe is connected to the chemical cleaning water inlet branch pipe.

[0016] Furthermore, the chemical cleaning circulation branch pipe is provided with a chemical cleaning circulation automatic valve.

[0017] Explanation of terms:

[0018] Skid: A functional component is integrated into an integral base, which is an integrated device that can be installed and moved as a whole, such as a membrane module skid and a membrane system piping skid.

[0019] Skid-mounted: Skid-mounted is assembled from multiple skids, each of which has an independent function. Specifically, the membrane module skid is integrated with the membrane system piping skid, and is a collection of equipment, piping, instrumentation, electrical equipment, and structures.

[0020] The beneficial effects of this utility model are: the overall skid installation of the membrane module and each branch pipeline, main valve, main control instrument, and electric control cabinet is realized, the structure is compact, the space utilization is maximized, and the installation and inspection can be completed before leaving the factory, which can not only ensure the quality of the project, but also reduce the complicated docking work during the construction process, greatly reduce the installation cost, and make the project cycle more controllable; flexible joints are added to the air washing branch pipeline to buffer the pipeline vibration during air washing; the exhaust at the water production end adopts the form of automatic valve + manual valve, and periodic drainage is carried out to avoid water leakage at the valve during water production, thereby improving the operation stability of the system.

[0021] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a main structural diagram of the pipeline-integrated external pressure ultrafiltration skid-mounted device described in an embodiment of the present utility model.

[0024] Figure 2 This is a top view of the structure of the pipeline-integrated external pressure ultrafiltration skid-mounted device described in an embodiment of the present utility model.

[0025] Figure 3 This is a schematic diagram of the working process of the pipeline-integrated external pressure ultrafiltration skid-mounted device described in an embodiment of the present utility model.

[0026] Wherein: 1-Ultrafiltration membrane module; 101-Water inlet; 102-Air inlet; 103-Water outlet; 104-Concentrate outlet; 2-Water inlet branch; 3-Chemical cleaning water inlet branch; 4-Chemical cleaning drain branch; 5-Backwash drain branch; 6-Air cleaning branch; 7-Water outlet branch; 8-Backwash water inlet branch; 9-Water outlet exhaust pipe; 10-Concentrate pipe; 11-Backwash drain branch; 12-Chemical cleaning circulation branch; 13-Concentrate outlet pipe; 14-Water inlet automatic valve; 15-Chemical cleaning water inlet automatic valve ;16-backwash drain automatic valve;17-chemical cleaning drain automatic valve;18-air intake automatic valve;19-flexible joint;20-concentrated water automatic valve;21-backwash drain automatic valve;22-water production end exhaust automatic valve;23-backwash water inlet automatic valve;24-online turbidity meter;25-electromagnetic flowmeter;26-water production automatic valve;27-chemical cleaning circulation automatic valve;28-water inlet end pressure transmitter;29-water production end pressure transmitter;30-concentrated water end pressure transmitter;31-concentrated water end exhaust automatic valve. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which this invention belongs.

[0029] It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have a meaning consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless as defined herein.

[0030] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a," "an," "said," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or groups thereof.

[0031] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0032] In this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0033] In the description of this specification, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present technology.

[0034] Unless otherwise specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood broadly. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of these terms in this technology based on specific circumstances.

[0035] To facilitate understanding of the present invention, the present invention will be further explained below with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0036] Those skilled in the art should understand that the drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily necessary for implementing the present invention.

[0037] The pipelines of each unit in the ultrafiltration membrane system are usually designed independently of each other. During the installation phase, due to the complexity of the system pipelines, a lot of docking work is often required to connect the ultrafiltration membrane module, which is time-consuming and labor-intensive. In addition, according to the operational feedback from multiple water plants, the setting of the valves in the ultrafiltration membrane system has certain hidden dangers. The pipeline-integrated external pressure ultrafiltration skid-mounted device provided by the utility model will solve the following technical problems: (1) The ultrafiltration membrane system pipeline is complex, difficult to install, and the system integrity is poor; (2) When compressed air is used for air washing, it is easy to cause pipeline vibration; (3) The breathing valve at the ultrafiltration water production end is easily affected by pressure fluctuations and causes water leakage.

[0038] In response to the above problems, the device provided by the present invention increases in-factory prefabrication, which can not only ensure the quality of the project but also reduce a large amount of installation work, which is conducive to reducing the difficulty of installation and shortening the project period, and has great economic and technical advantages; the layout and structure are compact, and space utilization is maximized, saving land while also meeting the space requirements for maintenance operations; it improves the visitor experience of the water plant, strengthens the brand image, and improves market competitiveness; it improves the stability of operation, improves the problem of pipeline vibration during air washing, and avoids the problem of exhaust leakage at the water production end.

[0039] like Figures 1 to 3 As shown, in this embodiment, a pipeline-integrated external pressure ultrafiltration skid-mounted device is provided, comprising: an ultrafiltration membrane module 1 and a pipeline skid; the ultrafiltration membrane module comprises a water inlet 101, an air inlet 102, a produced water outlet 103 and a concentrate outlet 104; the pipeline skid comprises a water inlet branch pipe 2, a chemical cleaning water inlet branch pipe 3, a chemical cleaning drain branch pipe 4, a backwash drain branch pipe 5, an air washing branch pipe 6, a produced water branch pipe 7, a backwash water inlet branch pipe 8, a produced water end exhaust pipe 9, a concentrate water pipe 10, a backwash drainage branch pipe 11, a chemical cleaning circulation branch pipe 12 and a concentrate water end exhaust pipe 13. Among them, the water inlet 101 is connected to the water inlet branch 2, the chemical cleaning water inlet branch 3, the chemical cleaning drain branch 4 and the backwash drain branch 5; the air inlet 102 is connected to the air washing branch 6; the water production port 103 is connected to the water production branch 7, the backwash water inlet branch 8 and the water production end exhaust pipe 9; the concentrate port 104 is connected to the concentrate pipe 10, the backwash drainage branch 11, the chemical cleaning circulation branch 12 and the concentrate end exhaust pipe 13.

[0040] The water inlet 101, the concentrate outlet 104, and the production water outlet 103 are all equipped with pressure transmitters: the water inlet pressure transmitter 28, the production water pressure transmitter 29, and the concentrate water pressure transmitter 30, respectively. The water inlet branch pipe 2 is equipped with an automatic water inlet valve 14; the chemical wash water inlet branch pipe 3 is equipped with an automatic chemical wash water inlet valve 15; the backwash drain branch pipe 5 is equipped with an automatic backwash drain valve 16; and the chemical wash drain branch pipe 4 is equipped with an automatic chemical wash drain valve 17. The air wash branch pipe 6 is equipped with an automatic air inlet valve 18, and a flexible joint 19 is provided on the air wash branch pipe 6 between the automatic air inlet valve 18 and the air inlet 102. The concentrate pipe 10 is equipped with an automatic concentrate valve 20; and the backwash drain branch pipe 11 is equipped with an automatic backwash drain valve 21. The water production exhaust pipe 9 is equipped with an automatic water production exhaust valve 22; the backwash water inlet branch pipe 8 is equipped with an automatic backwash water inlet valve 23; and the water production branch pipe 7 is equipped with an automatic water production valve 26. The water production branch pipe 7 is equipped with an online turbidity meter 24 and an electromagnetic flowmeter 25. The chemical cleaning circulation branch pipe 12 is connected to the chemical cleaning water inlet branch pipe 3. It is equipped with an automatic chemical cleaning circulation valve 27.

[0041] In a specific embodiment, combining Figure 1 、 Figure 2 The skid-mounted device, which integrates an ultrafiltration membrane module with system piping, comprises at least an ultrafiltration membrane module skid and a piping skid. The ultrafiltration membrane module 1 has four interfaces: a water inlet 101, an air inlet 102, a water outlet 103, and a concentrate outlet 104, from bottom to top.

[0042] Specifically, the above scheme is as follows: the water inlet 101 is connected to the water inlet branch 2, the chemical cleaning water inlet branch 3, the chemical cleaning drain branch 4 and the backwash drain branch 5; the air inlet 102 is connected to the air washing branch 6; the water production port 103 is connected to the water production branch 7, the backwash water inlet branch 8, and the water production end exhaust pipe 9; the concentrate port 104 is connected to the concentrate pipe 10, the backwash drainage branch 11, the chemical cleaning circulation branch 12, and the concentrate end exhaust pipe 13.

[0043] Specifically, the water inlet branch, chemical cleaning water inlet branch, chemical cleaning drain branch, gas washing branch, produced water branch, backwash water inlet branch, concentrate pipe, backwash drainage branch, and chemical cleaning circulation branch all have reserved flange interfaces to connect to the main pipe outside the device; the backwash drainage branch is connected to the backwash drain branch, and a flange opening is reserved for connection to the external drainage main pipe; the exhaust pipe at the produced water end and the exhaust pipe at the concentrate water end are connected to the drainage ditch nearby so that if leakage occurs during the exhaust process, the water can be drained in time; in addition, in order to meet the installation requirements of the flow meter, the produced water branch needs to add elbows to extend the pipe, usually in a U-shape.

[0044] The skid-mounted device of the utility model includes control valves for each branch. First, each branch pipeline is equipped with an automatic valve for step switching to achieve fully automatic control during the operation of the ultrafiltration system. A total of 12 automatic valves are required. To achieve constant flow water production, the water production branch pipe is set as an automatic regulating valve, which is controlled by a flow meter. Secondly, on the air washing branch pipe, in order to cope with the vibration of the pipeline during air washing, a flexible joint is added to provide a buffer, and a check valve is set to prevent water from flowing back into the air compressor during operation and causing damage to the equipment. In addition, an automatic valve + manual valve is set on the exhaust pipe at the water production end to replace the automatic exhaust valve, and periodic exhaust is turned on to prevent water leakage from the exhaust valve during water production. The exhaust at the concentrated water end also adopts the form of an automatic valve + manual valve. In addition, manual valves are set on the water production branch pipe and the water inlet branch pipe for maintenance.

[0045] In addition, the skid-mounted device also includes online process instruments to guide the operation of the system. The water inlet, concentrate outlet and water outlet are all equipped with pressure transmitters for real-time monitoring of changes in the transmembrane pressure difference of the ultrafiltration membrane; an online turbidity meter is installed on the water production branch pipe to monitor the turbidity index of the water production, and an electromagnetic flow meter is configured to monitor the water production flow in real time. The automatic regulating valve of the water production branch pipe is controlled in a linked manner to ensure the stability of the water production volume.

[0046] The ultrafiltration system includes six main steps: forward flushing, filtered water production, water backwashing, air-water backwashing, sewage discharge, and chemical cleaning. The step switching is controlled by automatic valves. During the forward flushing step, only the water inlet automatic valve 14 and the concentrated water automatic valve 20 are opened, and the raw water is used to flush the sediment on the membrane surface and fully discharge the residual air in the membrane assembly to prevent water hammer; during the water production step, only the water inlet automatic valve 14, the produced water automatic valve 26, and the concentrated water automatic valve 20 are opened, and the water inlet pump provides the system with water of stable pressure. At the same time, the pressure transmitters (28, 29, 30) at the water inlet, produced water, and concentrated water ends, the online turbidity meter 24, and the produced water end electromagnetic flowmeter 25 transmit data in real time; during the water backwashing step, only the backwash water inlet automatic valve 23 and the backwash drainage automatic valve 21 are opened. The water flow direction of this step is opposite to the direction of the filtered water flow. The backwashing pump transports the ultrafiltration produced water from the water production side of the membrane filament to the water inlet side, and flushes away the pollutants formed on the membrane surface during the filtration process from the inside to the outside; during the air-water backwashing step, in addition to the valves opened in the water backwashing step, the air inlet automatic valve 18 needs to be opened, and the air compressor is used to supply water from the inlet to the water inlet. A certain amount of oil-free air is introduced through the air port. The air's oscillation removes contaminants formed on the membrane surface during the filtration process. Due to the high compressed air pressure, the flexible joint 19 on the air wash branch effectively mitigates pipeline vibration. During the sewage discharge step, only the backwash drain valve 16, the water production end exhaust valve 22, and the concentrate end exhaust valve 31 are opened to discharge residual wastewater and gas from the membrane assembly and skid-mounted device pipelines. During the chemical cleaning step, only the chemical cleaning water inlet valve 15 and the chemical cleaning circulation valve 27 are opened. Prepared and heated chemical solution is introduced into the membrane module through the water inlet via the chemical cleaning pump. Multiple cycles and soaking remove organic and inorganic contaminants, thereby reducing the transmembrane pressure and restoring membrane flux. After the chemical cleaning step is completed, the chemical cleaning drain valve 17 is opened to drain the cleaning wastewater, and a water backwash and forward flush step are performed to resume the water production step. Changes in the transmembrane pressure are continuously monitored during the water production process, and the need to repeat the step is determined based on the recovery status.

[0047] In summary, the skid-mounted device described in the embodiment of the present invention is an integral skid-mounted device of the ultrafiltration membrane module skid and the piping system skid, and the skid-mounted device integrates equipment, pipelines, valves, instruments and control cabinets; flexible joints are provided on the air washing pipeline to cope with pipeline vibration during the air washing process; the exhaust mode at the water production end is changed to the form of automatic valve + manual valve, the pipeline is changed to run downward to lead to the drainage ditch, and the operation sequence is adjusted to avoid the problem of water leakage during operation.

[0048] This new device achieves an integrated skid-mounted assembly of the membrane module, various branch pipes, main valves, main control instruments, and electrical control cabinets. It features a compact structure and maximizes space utilization. Installation and inspection can be completed before shipment, ensuring project quality while reducing the tedious docking work during construction, significantly reducing installation costs and making the project cycle more controllable. Flexible joints are added to the air-wash branch pipes to buffer pipeline vibrations during air-washing. The exhaust at the water-producing end of this new device utilizes an automatic valve combined with a manual valve for periodic drainage to prevent valve leakage during water production, improving system operational stability.

[0049] This solution designs the piping system as a skid (see Figure 1 、 Figure 2 ), which connects to one side of the ultrafiltration membrane module. An alternative solution is to split the piping into two skids. For example, the branch pipes connecting the water inlet, air inlet, and permeate outlet are connected to skid one, while the branch pipes connecting the vent and concentrate outlet are connected to skid two. These are connected to both sides of the membrane module, respectively. This alternative solution provides clearer piping routing and facilitates later operation and maintenance.

[0050] When the single-group ultrafiltration flow is too large and needs to be split into two membrane stacks, the piping system skid can be placed between the two membrane stack skids, that is, the two membrane stacks share a set of piping system, which can greatly save space.

[0051] Although the above describes the specific implementation methods of the present invention in conjunction with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution disclosed in the present invention, various modifications or variations that can be made by technical personnel in this field without creative work should be included in the scope of protection of the present invention.

Claims

1. A pipeline-integrated external pressure ultrafiltration skid-mounted device, characterized in that: include: An ultrafiltration membrane assembly (1) and a pipeline skid; the ultrafiltration membrane assembly comprises a water inlet (101), an air inlet (102), a water production outlet (103) and a concentrated water outlet (104); the pipeline skid comprises a water inlet branch (2), a chemical cleaning water inlet branch (3), a chemical cleaning drain branch (4), a backwash drain branch (5), an air washing branch (6), a water production branch (7), a backwash water inlet branch (8), a water production end exhaust pipe (9), a concentrated water pipe (10), a backwash drainage branch (11), a chemical cleaning circulation branch (12) and a concentrated water end exhaust pipe (13); The water inlet (101) is connected to the water inlet branch pipe (2), the chemical cleaning water inlet branch pipe (3), the chemical cleaning drain branch pipe (4) and the backwash drain branch pipe (5); the air inlet (102) is connected to the air wash branch pipe (6); the water production port (103) is connected to the water production branch pipe (7), the backwash water inlet branch pipe (8) and the water production end exhaust pipe (9); and the concentrated water port (104) is connected to the concentrated water pipe (10), the backwash drainage branch pipe (11), the chemical cleaning circulation branch pipe (12) and the concentrated water end exhaust pipe (13).

2. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 1, characterized in that: The water inlet (101), the concentrated water outlet (104) and the water production outlet (103) are all equipped with pressure transmitters.

3. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 1, characterized in that: The water inlet branch pipe (2) is provided with an automatic water inlet valve (14); the chemical cleaning water inlet branch pipe (3) is provided with an automatic chemical cleaning water inlet valve (15); the backwash drain branch pipe (5) is provided with an automatic backwash drain valve (16); and the chemical cleaning drain branch pipe (4) is provided with an automatic chemical cleaning drain valve (17).

4. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 1, characterized in that: An automatic air intake valve (18) is provided on the air washing branch pipe (6), and a flexible joint (19) is provided on the air washing branch pipe (6) between the automatic air intake valve (18) and the air inlet (102).

5. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 1, characterized in that: The concentrated water pipe (10) is provided with a concentrated water automatic valve (20); the backwash drainage branch pipe (11) is provided with a backwash drainage automatic valve (21); and the concentrated water end exhaust pipe (13) is provided with a concentrated water end exhaust automatic valve (31).

6. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 1, characterized in that: The water production end exhaust pipe (9) is provided with a water production end exhaust automatic valve (22); the backwash water inlet branch pipe (8) is provided with a backwash water inlet automatic valve (23); and the water production branch pipe (7) is provided with a water production automatic valve (26).

7. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 6, characterized in that: An online turbidity meter (24) is provided on the water production branch pipe (7).

8. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 6, characterized in that: An electromagnetic flowmeter (25) is provided on the water production branch pipe (7).

9. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 1, characterized in that: The chemical cleaning circulation branch pipe (12) is connected to the chemical cleaning water inlet branch pipe (3).

10. The pipeline-integrated external pressure ultrafiltration skid-mounted device according to claim 9, characterized in that: The chemical cleaning circulation branch pipe (12) is provided with a chemical cleaning circulation automatic valve (27).

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