Built-in pipeline system filter and flow battery pipeline system

Abstract

The utility model discloses a built-in pipeline system filter and a flow battery pipeline system, and belongs to the technical field of flow batteries, the built-in pipeline system filter for the flow battery provided by the utility model comprises a filter screen and a supporting framework, the whole supporting framework is matched with the conical filter screen and can be mounted together in a sleeving manner, and the conical filter screen is arranged on the supporting framework. A sealing boss is arranged at the bottom of the sealing cover; a mounting boss matched with the sealing boss is arranged at the bottom of the filter screen, the mounting boss is connected with the sealing boss, and the filter screen and the supporting framework are arranged in the first pipeline after being connected in a sleeved mode; and the sealing boss is connected with the first pipeline. According to the utility model, the technical problems of large occupied area, high cost, high leakage risk, high fluid resistance and the like of a filtering device in a flow battery circulating system in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow batteries, in particular to an in-built pipeline system filter and a flow battery pipeline system. Background Technique

[0002] The existing flow battery circulation system mainly includes an electrolyte storage tank, an electrolyte circulation pump, electrolyte, a cooling device, a filtering device, a stack, and a pipeline connection system between various devices. The main function of the filtering device is to prevent possible debris, impurities, microparticles, etc. from affecting the electrolyte circulation pump during the system circulation process, and to prevent the stack from being blocked or damaged, so as to ensure the safe and stable operation of the battery system.

[0003] The conventional types of filtering devices used in flow battery circulation systems mainly include bag filters, wound filter element filters, Y-type pipeline filters, T-type pipeline filters, etc.; for flow battery systems with small flow rates and small pipeline diameters, Y-type or T-type pipeline filters are generally used; for flow battery systems with large flow rates and large pipeline diameters, customized bag filters or wound filter element filters are generally used. Both types of filters have large external dimensions, many interfaces, high leakage risks, and are inconvenient to install; and regardless of which type of filtering device mentioned above, a large fluid resistance will be generated during the electrolyte circulation flow, resulting in an increased head requirement for the electrolyte circulation pump, which will have a relatively obvious impact on the overall performance of the flow battery. Content of the Utility Model

[0004] In view of the deficiencies and shortcomings existing in the prior art, the utility model provides an in-built pipeline system filter and a flow battery pipeline system. The in-built pipeline system filter is convenient for installation and disassembly, easier to maintain, does not occupy extra space, has a relatively small leakage risk, is convenient for overhaul and maintenance, significantly reduces the operation and maintenance cost, and can significantly reduce the pump consumption of the electrolyte circulation pump.

[0005] To achieve the above objectives, the in-built pipeline system filter provided by the utility model includes a filter screen and a support skeleton. The support skeleton is mutually matched with the filter screen and can be sleeved and installed. A sealing boss is provided at the bottom of the support skeleton; an installation boss matching the sealing boss is provided at the bottom of the filter screen, and the installation boss is sealingly connected to the sealing boss; after the filter screen and the support skeleton are sleeved, they are arranged in a first pipeline; the sealing boss is connected to the first pipeline.

[0006] Preferably, the support skeleton includes axially reinforcing ribs and radially reinforcing ribs that are cross-connected.

[0007] Preferably, the filter screen is a conical filter screen; the support skeleton is a conical skeleton.

[0008] Preferably, the calculation formula of the outer diameter D2 of the large end of the conical filter is as follows:

[0009] D2 = d-5 mm;

[0010] Wherein, d is the inner diameter of the first pipeline;

[0011] The calculation formula for the small end outer diameter D1 of the conical filter is as follows:

[0012] D1 = (1 / 3 ~ 1 / 4) * D2;

[0013] The ratio of the effective filtering area of ​​the conical filter screen to the inner cross-sectional area of ​​the first pipe is 4.

[0014] Preferably, the support frame and the conical filter screen are both made of HDPE.

[0015] Preferably, the conical filter screen has a filtration mesh number of 100-200 meshes; the conical filter screen and the supporting frame are assembled in a fitted manner.

[0016] Preferably, the tops of the supporting frame and the conical filter screen are both conical flat-top structures. When the conical filter screen and the supporting frame are sleeved, the top of the conical filter screen abuts against the top of the supporting frame.

[0017] Preferably, the sealing boss is connected to the first end of the first pipe, and the first end of the first pipe is connected to the second pipe via a clamp.

[0018] Preferably, a first flange is provided at the first end of the first pipe, and a second flange is provided at the second end of the second pipe; the mounting boss is placed between the first flange and the second flange after being connected to the sealing boss; and the mounting boss and the sealing boss are locked and fixed after the first flange and the second flange are connected.

[0019] Preferably, the mounting boss and the sealing boss are sealingly clamped, threadedly connected or welded.

[0020] Preferably, the installation position of the built-in piping system filter can be selectively installed at the suction end of the electrolyte circulation pump, or the discharge end of the electrolyte circulation pump, or other specific positions of the circulation system pipeline.

[0021] Preferably, a first groove matching the mounting boss is provided on a side of the sealing boss facing the conical filter screen, and / or a second groove matching the mounting boss is provided on a side of the sealing boss facing away from the conical filter screen;

[0022] When the liquid flow direction is from the small end to the large end of the conical filter screen, the conical filter screen is fixed to the outside of the supporting frame; the sealing boss is connected to the first groove;

[0023] When the liquid flow direction is from the large end to the small end of the conical filter screen, the conical filter screen is fixed inside the support skeleton; the mounting boss is connected to the second groove.

[0024] On the other hand, the present utility model also provides a liquid flow battery pipeline system, including the built-in pipeline system filter described above.

[0025] The built-in pipeline system filter for liquid flow batteries provided by the present utility model has the following beneficial effects:

[0026] (1) The built-in pipeline system filter provided by the present utility model has a simple structure, does not occupy extra space, does not require a housing, has a low manufacturing cost. Compared with the other filtering devices used in the main pipeline in the prior art, the cost of the built-in pipeline system filter of the present utility model is about 1 / 15 of the manufacturing cost of the filter bag type filter; it has fewer interfaces, is convenient to install, and has a lower leakage risk.

[0027] (2) Compared with the commonly used Y-type filter, T-type filter, wound filter element type filter, and filter bag type filter, the built-in pipeline system filter provided by this solution can not only achieve the same filtering effect, but also the filtering direction is consistent with the fluid flow direction, without additional flow deflection, and has a smaller fluid resistance generated during the electrolyte circulation process; according to the fluid calculation and actual measurement data, the fluid resistance generated by the built-in pipeline system filter of the present utility model during the electrolyte circulation process is only 1 / 5 - 1 / 10 of the fluid resistance generated by other existing forms of filters, enabling the electrolyte circulation pump to reduce the demand for lift while ensuring the required flow rate of the circulation system, significantly reducing the energy consumption generated by the electrolyte circulation pump, and improving the overall efficiency of the liquid flow battery system.

[0028] (3) The built-in pipeline system filter provided by the present utility model has a simple and ingenious device structure. The installation methods of the first pipeline and the second pipeline, and the connection method between the mounting boss and the sealing boss can not only meet the sealing requirements, but also facilitate installation and disassembly, and are convenient for overhaul and maintenance, significantly reducing the operation and maintenance costs.

[0029] (4) For the built-in pipeline system filter provided by the present utility model, corresponding to different installation positions, the support skeleton and the conical filter screen have flexible combination methods, and the applicable range is wider. In addition, if the conical filter screen is damaged, only the conical filter screen needs to be replaced separately, without affecting the reuse of the support skeleton, significantly improving the utilization rate of the built-in pipeline system filter. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the support skeleton and the external conical filter screen of Embodiment 1 of the present utility model;

[0031] Figure 2 is Figure 1Schematic diagram of the installation and usage method of the external and internal conical filter screens and the support framework;

[0032] Figure 3 Schematic diagram of the installation of the built-in pipeline system filter for the flow battery in the pipeline at the suction end of the electrolyte circulation pump in Embodiment 1 (the electrolyte flow mode is as shown by the arrow);

[0033] Figure 4 Schematic structural diagram of the support framework and the built-in conical filter screen of Embodiment 2 of the present utility model;

[0034] Figure 5 For Figure 4 Schematic diagram of the installation and usage method of the internal conical filter screen and the support framework in;

[0035] Figure 6 Schematic diagram of the installation of the built-in pipeline system filter for the flow battery in the pipeline at the discharge end of the electrolyte circulation pump in Embodiment 2 (the electrolyte flow mode is as shown by the arrow).

[0036] In the figure: 1. Support framework; 101. Sealing boss; 102. Axial reinforcing rib; 103. Radial reinforcing rib; 104. Second groove; 2. Conical filter screen; 201. Installation boss; 3. Support top cover; 4. First pipeline; 5. Second pipeline. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0038] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] Taking the built-in pipeline system filter applied to the all-vanadium flow battery system as an example, the built-in pipeline system filter provided by the present utility model will be specifically introduced in combination with the attached Figures 1 - 6 drawings and specific embodiments.

[0040] Embodiment 1

[0041] Please refer to Figures 1 - 3, the built-in pipeline system filter for a flow battery provided by the present utility model includes a filter screen and a support skeleton 1. The support skeleton 1 is an overall structural framework that matches the filter screen and can be sleeved and installed together, and a sealing boss 101 is provided at its bottom. An installation boss 201 that matches the sealing boss 101 is provided at the bottom of the filter screen 2, and the installation boss 201 is hermetically connected to the sealing boss 101. After the filter screen and the support skeleton are sleeved, they are arranged in the first pipeline 4; the sealing boss is connected to the first pipeline 4.

[0042] Preferably, the filter screen is a conical filter screen 2; the support skeleton 1 is a conical skeleton. The filter screen can also be in the shape of a frustum, a chimney, etc.

[0043] In this embodiment, the built-in pipeline system filter is installed at the suction end of the electrolyte circulation pump. The conical filter screen 2 is an external type and is sleeved outside the support skeleton 1.

[0044] The external conical filter screen 2 is composed of an outer filter screen formed by manufacturing around the conical surface. An installation boss 201 that matches the sealing boss 101 is provided at the bottom of the external conical filter screen 2.

[0045] On the side of the sealing boss 101 at the bottom of the support skeleton 1 facing the conical filter screen 2, a first groove that matches the installation boss 201 is provided for the fitting installation of the external conical filter screen 2. The depth of the first groove is 3 mm. The thickness of the installation boss 201 is 3 mm, which cooperates with the first groove reserved on the sealing boss 101 at the bottom of the support skeleton 1, not only realizing an effective sealing connection between their bottoms, but also facilitating an effective pressing connection with the first pipeline 4 at the installation position. In addition, the installation boss 201 and the sealing boss 101 can also adopt a threaded connection or welding.

[0046] After the conical filter screen 2 and the support skeleton 1 are snap-fitted and sleeved together, after the top of the conical filter screen 2 and the top of the support skeleton 1 are seamlessly abutted, the installation boss 201 at the bottom of the external conical filter screen 2 is seamlessly snap-fitted into the first groove, realizing an effective sealed connection and installation between the conical filter screen 2 and the support skeleton 1. This setting enables the support skeleton 1 to achieve a sealing effect after being fitted and installed with the corresponding external conical filter screen 2, avoiding leakage, and the installation operation is simple, convenient to use, and easy to repair and disassemble.

[0047] Such as Figure 3As shown, the built-in pipeline system filter is installed on the first pipeline 4 at the suction end of the electrolyte circulation pump. The first pipeline 4 is selected with a pipe diameter of DN100. The built-in pipeline system filter and the first pipeline 4 are connected by flange connection, which is convenient for disassembly and assembly. At this time, the liquid flow direction is from the small end to the large end of the conical filter screen 2. The support skeleton 1 and the conical filter screen 2 together bear the suction pressure from the outside to the inside at the suction end of the electrolyte circulation pump. The conical filter screen 2 is fixed on the outside of the support skeleton 1. While achieving effective filtration, it realizes providing sufficient strength inside the conical filter screen 2 by the support skeleton 1 to support the conical filter screen 2, effectively preventing the situation of the filtration area of the conical filter screen 2 from decreasing, deforming, or failing due to damage, and ensuring the continuous and effective filtration effect.

[0048] Specifically, the first end of the first pipeline 4 is provided with a first flange, and the end of the second pipeline 5 is provided with a second flange; after the installation boss 201 is connected to the sealing boss 101, it is placed between the first flange and the second flange; after the first flange and the second flange are connected, the installation boss 201 and the sealing boss 101 are locked and fixed. This connection method not only ensures the convenience of installation and disassembly but also ensures the sealing performance and reduces leakage. In addition, the first pipeline 4 and the second pipeline 5 can also be connected by a quick joint clamp.

[0049] Axial reinforcing ribs 102 and radial reinforcing ribs 103 are arranged on the support skeleton 1 along the electrolyte flow direction and perpendicular to the electrolyte flow direction, jointly and alternately enclosing a conical support frame structure, so that the support skeleton 1 has sufficient strength to support the external conical filter screen 2. While ensuring the smooth passage of the fluid in the pipeline and achieving effective filtration, it minimizes the deformation or damage of the external conical filter screen 2 to the greatest extent and extends the service life of the device.

[0050] The tops of both the support skeleton 1 and the conical filter screen 2 are conical flat-top structures. This structural design realizes the effective seamless connection between the tops of the support skeleton 1 and the conical filter screen 2. While ensuring effective filtration, it significantly increases the effective filtration area, and has a relatively small fluid resistance during use, reducing energy consumption.

[0051] The materials of both the support skeleton 1 and the conical filter screen 2 are HDPE materials, which have strong corrosion resistance and strong plasticity, and can avoid the oxidation or corrosion of the filtration device when the electrolyte of the flow battery is acidic or alkaline.

[0052] The filtration mesh number of the conical filter screen 2 of the present utility model is 100 - 200 meshes, ensuring the filtration effect quality, meeting the filtration accuracy requirements of the general flow battery circulation system for the filtration device grade, meeting the actual filtration requirements, and at the same time having a certain rigidity.

[0053] The conical filter screen 2 and the support framework 1 are assembled in a fitting manner. When the two are combined and work together, on the premise of achieving effective filtration, the rigid support is significantly improved, and the fluid resistance and power consumption are significantly reduced.

[0054] The specific design, installation, and usage steps of the present utility model are as follows:

[0055] 1.1 Both the support framework 1 and the conical filter screen 2 are designed as conical flat-top structures. The outer diameter D2 of the large end of the conical filter screen 2 is D2 = d - 5 mm; D1 = (1 / 3 - 1 / 4) * D2; where D2 is the outer diameter of the large end of the external conical filter screen 2, D1 is the outer diameter of the small end of the external conical filter screen 2, and d is the inner diameter of the first pipe 4.

[0056] 1.2 Calculate the effective filtration area: S = S1 - S2;

[0057]

[0058] Where: S is the effective filtration area of the external conical filter screen 2; S1 is the filtration area of the external conical filter screen 2; S2 is the filtration area of the axial reinforcing ribs 102 and radial reinforcing ribs 103 of the support framework 1 that block the external conical filter screen 2; it can be estimated according to the outer dimensions designed for the axial reinforcing ribs 102 and radial reinforcing ribs 103 of the support framework 1; ε is the filter screen opening rate; h1 is the height of the external conical filter screen.

[0059] 1.3 According to relevant industry standards and design experience, select the ratio of the effective filtration area of the external conical filter screen to the inner cross-sectional area of the first pipe to be 4, that is, S / S5 = 4; where S5 is the inner cross-sectional area of the first pipe 4,

[0060] s5 = πd 2 / 4.

[0061] 1.4 According to steps 1.2 and 1.3, the required height h1 of the external conical filter screen 2 can be calculated.

[0062] 1.5 As Figure 2 shown, the external conical filter screen 2 and the support framework 1 are fitted and assembled. The upper mounting boss 201 of the external conical filter screen 2 is snapped into the first groove reserved in the sealing boss 101 of the support framework 1. Therefore, after determining the outer diameter D2 of the large end, the outer diameter D1 of the small end, and the filter screen height h1 of the external conical filter screen, and leaving an appropriate installation margin, the outer dimensions of the support framework 1 can also be determined. At the same time, the design of the support framework 1 requires sufficient support strength to ensure that no deformation or damage occurs during normal operation.

[0063] 1.6 After determining the design dimensions of the support skeleton 1 and the design dimensions of the external conical filter screen 2, the support skeleton 1 is injection-molded using HDPE material, and the external conical filter screen is formed by ultrasonic welding, hot melt welding or other suitable processes; when the external conical filter screen 2 and the support skeleton 1 are snap-fitted and sleeved, the external conical filter screen 2 is sleeved on the support skeleton 1, and the installation boss 201 at the bottom of the external conical filter screen 2 just snaps into the first groove on the sealing boss 101. At this time, a seamless abutment is achieved between the top of the conical filter screen 2 and the top of the support skeleton 1. Using this snap connection method, the traditional welding method is avoided. When the conical filter screen 2 is damaged, it only needs to be replaced separately, without affecting the reuse of the support skeleton 1. While extending the service life of the device, the utilization rate of the built-in pipeline system filter of the present utility model is significantly improved.

[0064] 1.7 As Figure 3 shown, after the support skeleton 1 and the external conical filter screen 2 are assembled and fitted, they are installed in the first pipeline 4 at the suction end of the electrolyte circulation pump. The first pipeline 4 and the second pipeline 5 use pipeline flanges with a size specification of DN100 and flange gaskets to clamp the sealing boss 101 and the installation boss 201 of the support skeleton 1. Then, after fastening with bolts, it can be used normally. The outer diameter of the installation boss 201 is larger than the outer diameter of the first pipeline 4, which is convenient for further limiting and fixing the external conical filter screen 2.

[0065] In summary, the built-in pipeline system filter for flow batteries provided by the utility model can meet the requirements of adapting to the filtration accuracy. The built-in pipeline system filter is convenient for installation and disassembly, easier to maintain, does not occupy extra space, has a small leakage risk, is convenient for overhaul and maintenance, and significantly reduces the operation and maintenance cost. It can significantly reduce the pump consumption of the electrolyte circulation pump and improve the energy efficiency of the flow battery system. It can not only achieve the filtering effect of ordinary filters, but also generate less fluid resistance during the electrolyte circulation process.

[0066] According to the fluid calculation and the actual measurement data, the fluid resistance generated by the built-in pipeline system filter of the present utility model during the electrolyte circulation process is only 1 / 5 - 1 / 10 of the fluid resistance generated by other existing forms of filters. This enables the electrolyte circulation pump to reduce the demand for head while ensuring the required flow rate of the circulation system, significantly reducing the energy consumption generated by the electrolyte circulation pump and improving the overall efficiency of the flow battery system.

[0067] Embodiment 2

[0068] Please refer to Figures 4 - 6, the built-in pipeline system filter for flow batteries provided by the present utility model has the same functions as the same structural parts in Embodiment 1, which will not be elaborated one by one. The difference is that it is installed in the pipeline system at the discharge end of the electrolyte circulation pump. The support skeleton 1 and the conical filter screen 2 bear the discharge pressure of the electrolyte circulation pump from the inside to the outside, and the liquid flow direction is from the large end to the small end of the conical filter screen 2. On the side of the sealing boss 101 facing away from the conical filter screen 2, there is a second groove 104 matching the installation boss 201. The conical filter screen 2 is fixed inside the support skeleton 1. At this time, the conical filter screen 2 is called the built-in conical filter screen 2. While achieving effective filtration, it realizes providing sufficient strength inside the conical filter screen 2 by the support skeleton 1 to support the conical filter screen 2, effectively preventing the situation of the filtration area of the conical filter screen 2 from decreasing, deforming or failing due to breakage, and ensuring the continuous effectiveness of the filtration effect.

[0069] The depth of the second groove 104 is 3 mm, and the thickness of the installation boss 201 is 3 mm. It cooperates with the second groove 104 reserved at the bottom of the sealing boss 101 clamped with the bottom of the support skeleton 1, not only realizing effective sealed connection between their bottoms, but also facilitating the effective clamping connection between the built-in pipeline system filter for flow batteries of the present utility model and the first pipeline 4.

[0070] After the conical filter screen 2 is clamped inside the support skeleton 1, there is seamless abutment between the top of the conical filter screen 2 and the top of the support skeleton 1. The installation boss 201 at the bottom of the built-in conical filter screen 2 is seamlessly clamped in the second groove 104, realizing effective sealed connection and installation between the conical filter screen 2 and the support skeleton 1. This setting enables the support skeleton 1 to achieve a sealed effect after being cooperatively installed with the corresponding built-in conical filter screen 2, avoiding leakage, and the installation operation is simple, convenient to use, and convenient for maintenance and disassembly.

[0071] The specific design, installation and use steps of this embodiment are as follows:

[0072] 2.1 The outer diameter D4 of the large end of the conical filter screen 2 = d - 5 mm; D3 = (1 / 3 - 1 / 4) * D4; where D4 is the outer diameter of the large end of the conical filter screen 2, D3 is the outer diameter of the small end of the conical filter screen 2, and d is the inner diameter of the DN100 pipeline.

[0073] 2.2 Calculate the effective filtration area: S0 = S3 - S4;

[0074]

[0075] Wherein: S0 is the effective filtration area of the built-in conical filter screen 2; S3 is the filtration area of the built-in conical filter screen 2; S4 is the filtration area of the built-in conical filter screen 2 blocked by the axial reinforcing ribs 102 and radial reinforcing ribs 103 of the support skeleton 1, which can be estimated according to the external dimensions designed by the axial reinforcing ribs 102 and radial reinforcing ribs 103 of the support skeleton 1; ε is the screen opening ratio; h2 is the height of the built-in conical filter screen.

[0076] 2.3 According to relevant industry standards and design experience, the ratio of the effective filtration area of the built-in conical filter screen to the cross-sectional area of the inner surface of the pipe at the installation position is selected to be 4, that is, S 0 / S5 = 4; where S5 is the inner cross-sectional area of the first pipe 4.

[0077] 2.4 According to steps 2.2 and 2.3, the height h2 of the built-in conical filter screen required for the design can be calculated;

[0078] 2.5 As Figure 5 shown, the built-in conical filter screen 2 and the support skeleton 1 are matched and assembled. The installation boss 201 at the bottom of the built-in conical filter screen 2 is snapped upward into the second groove 104 reserved at the bottom of the sealing boss 101 of the support skeleton 1; after determining the outer diameter D4 of the large end, the outer diameter D3 of the small end and the height h2 of the built-in conical filter screen 2, and leaving an installation margin, the external dimensions of the support skeleton 1 can also be determined. When the built-in conical filter screen 2 and the support skeleton 1 are snap-fitted and sleeved, the support skeleton 1 is sleeved on the built-in conical filter screen 2, and the built-in installation boss 201 at the bottom of the built-in conical filter screen 2 just snaps into the second groove 104 on the clamping sealing boss 101. At this time, a seamless abutment can also be achieved between the top of the built-in conical filter screen 2 and the top of the support skeleton 1. Using this snap connection method, when the conical filter screen is damaged, only the filter screen needs to be replaced separately, which does not affect the reuse of the support skeleton 1, and improves the utilization rate of the built-in pipeline system filter.

[0079] 2.6 As Figure 6 shown, after the support skeleton 1 and the built-in conical filter screen 2 are assembled and installed in the pipeline system at the discharge end of the electrolyte circulation pump, the first pipe 4 and the second pipe 5 use flanges with a size specification of DN100 and flange gaskets to clamp the sealing boss 101 of the support skeleton 1, and after being fastened with bolts, it can be used normally.

[0080] The built-in pipeline system filter for flow batteries of the present utility model has a clever device structure design. During the design process, two installation methods of the conical filter screen, namely, internal and external installation, are considered, enabling it to be selected according to the actual fluid demand direction and having a wide range of applications. Considering the design method of the internal conical filter screen 2 in Embodiment 2, when the filtering area is sufficient, first grooves and second grooves 104 can be reserved at the top and bottom of the sealing boss 101 installed on the upper part of the support skeleton 1, taking into account the combined installation of the internal and external conical filter screens 2. In this case, only one form of conical skeleton 1 needs to be manufactured, which can simultaneously match the installation of two conical filter screens 2, reducing the number of injection molds for the support skeleton 1, lowering costs, improving the utilization rate of the conical skeleton 1, and effectively reducing the manufacturing cost. The built-in pipeline system filter for flow batteries provided by the present utility model has a simple and ingenious device structure, and both the manufacturing and maintenance costs are significantly reduced. Compared with the other filtering devices used in the main pipeline in the prior art, the cost of the built-in pipeline system filter of the present utility model is about 1 / 15 of the manufacturing cost of the bag filter.

[0081] In summary, the built-in pipeline system filter for flow batteries provided by the present utility model not only ensures high-precision filtering requirements through this built-in pipeline system filter, but also has small fluid resistance generated during the electrolyte circulation process, low manufacturing cost, simple installation operation, does not occupy extra space, has a small leakage risk, is convenient for inspection and maintenance, and reduces the operation and maintenance cost; it can correspond to different installation positions, and the support skeleton and the conical filter screen have flexible combination methods, with a wider scope of application. In addition, if the conical filter screen is damaged, only the conical filter screen needs to be replaced separately, which does not affect the reuse of the support skeleton, improving the utilization rate of the built-in pipeline system filter.

[0082] The above are only the embodiments of the present utility model. For example, the connection method between the built-in pipeline system filter and the pipeline system is the clamping between flanges or the clamping between quick connectors, and any one of the detachable sealing connection methods. The external conical filter screen is formed by ultrasonic welding, hot melt welding or other suitable processes, and the built-in pipeline system filter for flow batteries of the present utility model can be realized.

[0083] Embodiment 3

[0084] This embodiment provides a flow battery pipeline system, including the built-in pipeline system filter described in Embodiment 1 or Embodiment 2.

[0085] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its utility model concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. An in-line pipe system filter, characterized in that, It comprises a filter screen and a support frame (1), wherein the support frame (1) and the filter screen match each other and can be sleeved and installed, and a sealing boss (101) is provided at the bottom of the support frame (1); A mounting boss (201) matching the sealing boss (101) is provided at the bottom of the filter screen, and the mounting boss (201) is sealingly connected to the sealing boss (101); The filter screen and the support frame (1) are sleeved and arranged in the first pipe; the sealing boss (101) is connected to the first pipe.

2. The built-in pipeline system filter according to claim 1, characterized in that, The support frame (1) comprises axial reinforcing ribs (102) and radial reinforcing ribs (103) that are connected in an alternating manner.

3. The built-in pipeline system filter according to claim 1, characterized in that, The filter screen is a conical filter screen (2); and the support frame (1) is a conical frame.

4. The built-in pipe system filter according to claim 3, characterized in that: The calculation formula of the outer diameter D2 of the large end of the conical filter (2) is as follows: D2 = d-5 mm; Wherein, d is the inner diameter of the first pipeline (4); The calculation formula of the small end outer diameter D1 of the conical filter (2) is as follows: D1 = (1 / 3 ~ 1 / 4) * D2; The ratio of the effective filtering area of ​​the conical filter (2) to the inner cross-sectional area of ​​the first pipe (4) is 4.

5. The built-in pipeline system filter according to claim 3, characterized in that, The support frame (1) and the conical filter screen (2) are both conical flat-top structures; when the conical filter screen (2) and the support frame (1) are sleeved, the top of the conical filter screen (2) abuts against the top of the support frame (1).

6. The built-in pipeline system filter according to claim 1, characterized in that, The sealing boss (101) is connected to the first end of the first pipe (4), and the first end of the first pipe (4) is connected to the second pipe (5) via a clamp.

7. The built-in pipeline system filter according to claim 6, characterized in that, A first flange is provided at the first end of the first pipe (4), and a second flange is provided at the end of the second pipe (5); the mounting boss (201) is placed between the first flange and the second flange after being connected to the sealing boss (101); and the mounting boss (201) and the sealing boss (101) are locked and fixed after the first flange and the second flange are connected.

8. The built-in pipe system filter according to claim 1, characterized in that: The mounting boss (201) and the sealing boss (101) are sealed and clamped, threadedly connected or welded.

9. The built-in pipe system filter according to claim 3, characterized in that: A first groove matching the mounting boss (201) is provided on the side of the sealing boss (101) facing the conical filter screen (2), and / or a second groove (104) matching the mounting boss (201) is provided on the side of the sealing boss (101) facing away from the conical filter screen (2); When the liquid flow direction is from the small end to the large end of the conical filter (2), the conical filter (2) is fixed to the outside of the support frame (1); the sealing boss (101) is connected to the first groove; When the liquid flow direction is from the large end to the small end of the conical filter (2), the conical filter (2) is fixed to the inner side of the support frame (1); and the mounting boss (201) is connected to the second groove (104).

10. A flow battery pipeline system, characterized in that, A built-in piping system filter comprising any one of claims 1-9.

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