An ice blockage device for a pipe
By designing a labyrinthine flow channel and a detachable ice-blocking device, the problems of low efficiency and low liquid nitrogen utilization of existing ice-blocking devices are solved, achieving a highly efficient and safe ice-blocking process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINGAO NUCLEAR POWER
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-05
AI Technical Summary
Existing ice-blocking devices suffer from low efficiency, significant liquid nitrogen waste, seal failure, and low liquid nitrogen utilization.
Design an ice-blocking device comprising two clamps, each clamp having an internal enclosed space, a first rib and a second rib forming a labyrinthine flow channel, and a refrigerant inlet and outlet on the housing. The clamps are detachably connected by connectors to form a hollow channel, and quick assembly and disassembly are achieved using magnetic components.
It improves heat exchange efficiency, enhances refrigerant utilization, reduces liquid nitrogen waste, and ensures the safety and efficiency of the ice blockage process.
Smart Images
Figure CN224326867U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline ice blockage technology, and in particular to an ice blockage device for pipelines. Background Technology
[0002] Ice blockage refers to the process of surrounding a point in a process piping system with external refrigerant, causing the process fluid inside the pipeline to freeze and form a fixed internal blockage. Ice blockage devices are important tools for surrounding process piping systems with external refrigerant. Currently, there are two types of ice blockage devices used in practical applications:
[0003] 1) Open-type clamp: Designed as a box-shaped object, closed at the bottom and sides, and open at the top. The clamp is installed at the pipe section to be iced, and refrigerant is manually filled into the clamp groove. However, it has the following disadvantages: (1) It requires manual filling of the groove with refrigerant, which is inefficient; (2) After liquid nitrogen vaporizes, it produces a large area of white fog that affects the visibility of personnel. It is difficult to control the liquid nitrogen level during filling, and liquid nitrogen overflow causes liquid nitrogen waste and frostbite to personnel.
[0004] 2) Semi-open clamp: Two hollow semi-cylindrical clamps are combined to form a cavity, which is used to contain liquid nitrogen and is also the area where liquid nitrogen exchanges heat with the pipe surface. The sealing surface between the clamps is made of soft sealing gasket (such as soft polytetrafluoroethylene gasket) and the two halves of the clamp are fixed with bolts. However, there are the following disadvantages: (1) After freezing, the sealing material at the joint of the two halves of the clamp will "cold shrink" and the seal will fail, which will easily lead to liquid nitrogen leakage, resulting in liquid nitrogen waste and frostbite; (2) The space for containing liquid nitrogen is a single cavity. The liquid nitrogen that enters the cavity first will vaporize and generate nitrogen gas after exchanging heat with the pipe surface. When the nitrogen gas rises, it will resist the liquid nitrogen that enters the cavity later, so that the liquid nitrogen that enters later will vaporize and be discharged from the cavity before exchanging heat with the pipe surface, resulting in low effective utilization of liquid nitrogen. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide an ice-blocking device for pipelines.
[0006] The technical solution adopted by this utility model to solve its technical problem is: an ice-blocking device for pipelines, comprising two clamps;
[0007] Any of the clamps includes a housing with an internal enclosed space, a plurality of first ribs and a plurality of second ribs, wherein the first ribs are disposed in the internal enclosed space and fixedly connected to the first inner wall of the housing, the second ribs are disposed in the internal enclosed space and fixedly connected to the second inner wall of the housing, and the first ribs and the second ribs are separated by a gap, and the first ribs and the second ribs are interlaced to form a flow channel;
[0008] The housing has at least one refrigerant inlet for refrigerant input and at least one refrigerant outlet for refrigerant output. The refrigerant inlet is connected to the first end of the flow channel, and the refrigerant outlet is connected to the second end of the flow channel.
[0009] The housing is concave, and at least two housings corresponding to at least two clamps are detachably connected by connectors to form a hollow clamp for the pipe to be blocked by ice.
[0010] For example, the housing of any of the clamps includes an outer shell, an inner shell, at least two end plates and at least two side plates, the outer shell and the inner shell are spaced apart from each other, each end plate is fixedly connected to the end of the outer shell and the inner shell respectively, and each side plate is fixedly connected to the side of the outer shell and the inner shell respectively.
[0011] Wherein, any of the outer shells is provided with a refrigerant inlet and a refrigerant outlet; at least two of the side plates of any of the clamps are detachably connected to at least two of the side plates (14) of any other clamp, so that all the inner shells of at least two clamps are combined to form the hollow clamp for the pipe to be ice-blocked.
[0012] For example, in any of the fixtures, the first rib is fixedly connected to the outer shell and has a gap between it and the inner shell, and the second rib is fixedly connected to the inner shell and has a gap between it and the outer shell to form the flow channel.
[0013] For example, an S-shaped flow channel is formed between adjacent first and second ribs.
[0014] For example, a gap is provided between the first rib and at least one of the end plates, and / or, a gap is provided between the second rib and at least one other end plate that is different from the end plate with the gap corresponding to the first rib.
[0015] For example, the connector includes a plurality of magnetic elements, at least one of the magnetic elements is fixedly mounted on any of the side plates, and at least two of the side plates of any of the clamps and at least two of the side plates of any other clamp are magnetically attracted and fixed by the magnetic elements.
[0016] For example, a plurality of the magnetic elements are fixedly mounted on any of the side plates.
[0017] For example, the magnetic component is a neodymium magnet.
[0018] For example, the radial cross-section of the inner shell is arc-shaped, and the radial cross-sections of the inner shells of at least two of the clamps are spliced together to form a circle; and / or, the radial cross-section of the outer shell is arc-shaped, and the radial cross-sections of the outer shells of at least two of the clamps are spliced together to form a circle.
[0019] For example, the housing, the first rib, and the second rib are all made of aluminum alloy.
[0020] By implementing this utility model, the following beneficial effects can be achieved:
[0021] This utility model discloses an ice-blocking device for pipelines, comprising at least a first clamp and a second clamp, wherein the first clamp and the second clamp together clamp and fix the pipeline to be ice-blocked; the first clamp and the second clamp each comprise a shell with an internal enclosed space, a plurality of first ribs and a plurality of second ribs, the first ribs being disposed in the internal enclosed space and fixedly connected to the first inner wall of the shell, the second ribs being disposed in the internal enclosed space and fixedly connected to the second inner wall of the shell, with gaps between the first ribs and the second inner wall, and gaps between the second ribs and the first inner wall, the first ribs and the second ribs being interlaced to form a flow channel; the shell has at least one refrigerant inlet for refrigerant input and at least one refrigerant outlet for refrigerant output, the refrigerant inlet communicating with the first end of the flow channel, and the refrigerant outlet communicating with the second end of the flow channel; the shell is concave, and the shells of the first clamp and the second clamp are detachably connected by a connector to form a hollow clamp for the pipeline to be ice-blocked. The hollow clamp of this utility model can be clamped onto the pipe to be ice-blocked, positioning the entire device. The refrigerant enters the internal enclosed space of the shell from the refrigerant inlet, flows through the unidirectional flow channel formed by the interlacing arrangement of the first and second ribs, and at the same time extends the heat exchange path, improves the heat exchange efficiency, and improves the utilization rate of the refrigerant, so as to achieve efficient ice-blocking of the pipe to be ice-blocked. Attached Figure Description
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0023] Figure 1 This is a schematic diagram of the structure of an ice-blocking device according to an embodiment of the present invention;
[0024] Figure 2 yes Figure 1 A top view of the ice-blocking device, wherein the end plate is not shown;
[0025] Figure 3 yes Figure 1 A top-view structural diagram of any of the clamps, wherein the end plate is not shown;
[0026] Figure 4 yes Figure 3 A structural schematic diagram of the clamp from a bottom view, wherein the end plate is not shown;
[0027] Figure 5 yes Figure 3 A structural schematic diagram of the front view angle of the clamping fixture, wherein the end plate is not shown;
[0028] Figure 6 yes Figure 1 A schematic diagram of the flow channel structure of any of the clamps;
[0029] Figure 7 yes Figure 1 A schematic diagram of the second structure of the flow channel of any of the clamps. Detailed Implementation
[0030] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] See Figures 1 to 7 One embodiment of this utility model discloses an ice-blocking device for pipelines, comprising at least two clamps, which together clamp and fix the pipeline to be ice-blocked. The number of clamps can be determined according to actual needs, such as two, three, or four. When there are two clamps, the two clamps together clamp and fix the pipeline to be ice-blocked. When there are three clamps, the three clamps together clamp and fix the pipeline to be ice-blocked. When there are four clamps, the four clamps together clamp and fix the pipeline to be ice-blocked. Each clamp includes a shell 1 with an internal enclosed space, a plurality of first ribs 2, and a plurality of second ribs 3. The first ribs 2 are disposed in the internal enclosed space and fixedly connected to the first inner wall of the shell 1, and the second ribs 3 are disposed in the internal enclosed space and fixedly connected to the second inner wall of the shell 1. A gap is left between the first ribs 2 and the second inner wall, and a gap is left between the second ribs 3 and the first inner wall. The first ribs 2 and the second ribs 3 are interlaced to form a flow channel. The shell 1 can be hexahedral, and the first and second inner walls can be adjacent sidewalls or opposite sidewalls. The flow channel includes the space between the first rib 2 and the second rib 3, the gap between the first rib 2 and the second inner wall, and the gap between the second rib 3 and the first inner wall.
[0035] The casing 1 has at least one refrigerant inlet 15 for refrigerant input and at least one refrigerant outlet 16 for refrigerant output. The refrigerant inlet 15 is connected to a first end of the flow channel, and the refrigerant outlet 16 is connected to a second end of the flow channel. The refrigerant inlet 15 can be connected to an external refrigerant source to provide a cold source for the pipe to be ice-blocked. Generally, liquid nitrogen can be used as the refrigerant. The refrigerant outlet 16 is used for the output of refrigerant after heat exchange; since liquid nitrogen forms nitrogen gas after heat exchange, the refrigerant outlet 16 is used to output nitrogen gas.
[0036] The housing 1 is concave, and at least two housings 1 corresponding to at least two clamps are detachably connected by connectors 4 to form a hollow clamp 5 for the pipe to be ice-blocked. The hollow clamp 5 can clamp the pipe to be ice-blocked, fixing the entire ice-blocking device on the pipe to be ice-blocked, so as to facilitate the subsequent addition of coolant to cool the pipe to be ice-blocked.
[0037] In traditional ice-blocking devices, the refrigerant enters the cavity, absorbs heat, and vaporizes and boils. This first generates bubbles on the inner surface of the ice-blocking device that comes into contact with the pipeline. These bubbles are in a disordered state within the cavity, forming eddies that impede the flow of the refrigerant. Furthermore, a bubble layer forms between the refrigerant and the inner surface of the ice-blocking device, hindering the refrigerant from absorbing heat and doing work on the inner surface of the ice-blocking box, reducing heat exchange efficiency, and causing refrigerant waste.
[0038] The ice-blocking device of this invention adds several first ribs 2 and several second ribs 3 to the internal enclosed space, forming a labyrinthine flow channel, i.e., a heat exchange channel. This establishes a unidirectional flow path for the refrigerant and the vaporized medium, ensuring the orderly flow of both. By employing the labyrinthine heat exchange channel of this invention, the heat exchange path can be extended, improving heat exchange efficiency and refrigerant utilization.
[0039] In some embodiments, the housing 1 of any clamp includes an outer shell 11, an inner shell 12, at least two end plates 13, and at least two side plates 14. The outer shell 11 and the inner shell 12 are spaced apart from each other. Each end plate 13 is fixedly connected to the end of the outer shell 11 and the inner shell 12, respectively, and each side plate 14 is fixedly connected to the side of the outer shell 11 and the inner shell 12, respectively. Each outer shell 11 has a refrigerant inlet 15 and a refrigerant outlet 16. At least two side plates 14 of any clamp are detachably connected to at least two side plates 14 of any other clamp, such that all the inner shells 12 of at least two clamps form a hollow clamp 5 for the pipe to be ice-blocked.
[0040] For example, such as Figure 1 As shown, when the housing 1 of any clamp includes two end plates 13 and two side plates 14, one side plate 14 is fixedly connected to the left side surface of the outer shell 11 and the inner shell 12 respectively, and the other side plate 14 is fixedly connected to the right side surface of the outer shell 11 and the inner shell 12 respectively. One end plate 13 is connected to the upper end of the outer shell 11 and the inner shell 12 respectively, and another end plate 13 is connected to the lower end of the outer shell 11 and the inner shell 12 respectively. All connections of the components are sealed connections to maintain the sealing of the internal enclosed space. The side and end positions here are only the orientations defined in this utility model and are not intended to limit actual application. Figure 1 For example, the left side of the inner shell 12 / outer shell 11 is the left side face, the right side face is the right side face, the top is the upper end, and the bottom is the lower end.
[0041] For example, when the housing 1 of any clamp includes three end plates 13 and / or three side plates 14, the first side plate 14 is fixedly connected to the left side of the outer shell 11 and the inner shell 12 respectively, the second side plate 14 and the third side plate 14 are adjacent to each other, and the second side plate 14 is fixedly connected to the right side of the outer shell 11, and the third side plate 14 is fixedly connected to the right side of the inner shell 12. And / or, the first end plate 13 is connected to the upper end of the outer shell 11 and the inner shell 12 respectively, the second end plate 13 and the third end plate 13 are adjacent to each other, and the second end plate 13 is connected to the lower end of the outer shell 11, and the third end plate 13 is connected to the lower end of the inner shell 12. When the housing 1 of any clamp includes four or more end plates 13 and / or four or more side plates 14, the same principle applies, which will not be elaborated here. Generally, to achieve a reliable connection, the number of end plates 13 and side plates 14 of different clamps remains the same.
[0042] like Figures 2 to 4 As shown, in some embodiments, in any fixture, the first rib 2 is fixedly connected to the outer shell 11 and has a gap between it and the inner shell 12; the second rib 3 is fixedly connected to the inner shell 12 and has a gap between it and the outer shell 11, to form a flow channel. Understandably, in other embodiments, the first rib 2 may be connected to the upper end plate 13 and has a gap between it and the lower end plate 13, and the second rib 3 may be connected to the lower end plate 13 and has a gap between it and the upper end plate 13. Alternatively, the first rib 2 may be connected to the upper end plate 13 and has a gap between it and the lower end plate 13, and the second rib 3 may be connected to the inner shell 12 and has a gap between it and the outer shell 11. And so on, without further details.
[0043] like Figure 6 As shown, in some embodiments, an S-shaped flow channel is formed between adjacent first ribs 2 and second ribs 3. This can extend the heat exchange path, improve heat exchange efficiency, and increase refrigerant utilization. For example, the gap between the first rib 2 and the outer shell 11, the space between the first rib 2 and the second rib 3, and the gap between the second rib 3 and the inner shell 12 form an S-shaped flow channel, as shown by the dashed S-line in the figure. Note that the dashed S-line in the figure is only a schematic representation of the flow channel shape and does not represent the actual structure.
[0044] In some embodiments, a gap is provided between the first rib 2 and at least one end plate 13, and / or, a gap is provided between the second rib 3 and at least one other end plate 13 with a gap different from that of the end plate 13 corresponding to the first rib 2. Wherein, for example... Figure 7 As shown, the first rib 2 can have a gap with the upper end plate 13, allowing refrigerant to flow through the gap between the first rib 2 and the upper end plate 13. Alternatively, the second rib 3 can have a gap with the lower end plate 13, allowing refrigerant to flow through the gap between the second rib 3 and the lower end plate 13. Or, the first rib 2 can have a gap with the upper end plate 13, and the second rib 3 can have a gap with the lower end plate 13, allowing refrigerant to flow through the gaps between the first rib 2 and the upper end plate 13, and between the second rib 3 and the lower end plate 13. This increases the refrigerant flow path and improves heat exchange efficiency. The gaps between the first rib 2 and the upper end plate 13, the space between the first rib 2 and the second rib 3, and the gap between the second rib 3 and the lower end plate 13 can form an S-shaped flow channel. Note that the dashed S-line in the figure is only a schematic representation of the flow channel shape and not a solid structure.
[0045] Understandably, the first rib 2 has a gap with one of the two end plates 13, and / or the second rib 3 has a gap with the other of the two end plates 13. Simultaneously, the first rib 2 is fixedly connected to the outer shell 11 and / or the second rib 3 is fixedly connected to the inner shell 12, which can form one, two, or more flow channels for refrigerant circulation. For example, the first rib 2 may have a gap with the upper end plate 13, allowing refrigerant to flow through the gap between the first rib 2 and the upper end plate 13. The second rib 3 is fixedly connected to the inner shell 12 and has a gap with the outer shell 11, allowing refrigerant to flow through the gap between the second rib 3 and the end plate 13 of the outer shell 11. The flow channels here include the gap between the first rib 2 and the upper end plate 13, the space between the first rib 2 and the second rib 3, and the gap between the second rib 3 and the outer shell 11. For example... Figure 6 and Figure 7 The two flow channels can be combined in the same embodiment. Similarly, various flow channel structures can be formed, which will not be elaborated here.
[0046] In some embodiments, the connector 4 includes several magnetic elements, with at least one magnetic element fixedly mounted on any side plate 14. At least two side plates 14 of any clamp are magnetically attracted to at least two side plates 14 of any other clamp. This allows for quick assembly and disassembly of the ice-blocking device, saving operating time and improving operational efficiency. For example, if a magnetic element is mounted on the side plate 14 on the left side of a clamp, a corresponding magnetic element is provided on the side plate 14 on the right side of the mating clamp, and the two magnetic elements magnetically attract and fix the entire ice-blocking device. To achieve standardized production, the magnetic elements can be symmetrically arranged on the two side plates 14. Understandably, in some other embodiments, when quick assembly and disassembly are not considered, bolts and nuts can be used to fasten the clamps. To strengthen the fixation and facilitate the installation of the magnetic elements, the width of the side plate 14 can be greater than the distance between the outer shell 11 and the inner shell 12 and partially extend beyond the outer side of the outer shell 11.
[0047] like Figure 5 As shown, in some embodiments, multiple magnetic components are fixedly installed on any side panel 14. This can increase the magnetic attraction and strengthen the fixation. For example, three, four, or five magnetic components are fixedly installed on each side panel 14. The specific number can be set according to actual needs, and this utility model does not impose any limitations on it.
[0048] In some embodiments, the magnetic component is a neodymium magnet. Neodymium magnets can generate extremely strong magnetic fields, meeting the fixation requirements of the entire ice-blocking device. Understandably, in other embodiments, magnets made of other materials, such as samarium cobalt magnets, can also be used, as long as the magnetic attraction force is sufficient to fix the entire ice-blocking device to the pipe to be ice-blocked.
[0049] In some embodiments, the radial cross-section of the inner shell 12 is arc-shaped, and the radial cross-sections of the inner shells 12 of at least two clamps are spliced to form a circle. And / or, the radial cross-section of the outer shell 11 is arc-shaped, and the radial cross-sections of the outer shells 11 of at least two clamps are spliced to form a circle. Here, the radial direction is the same as the radial direction of the pipe to be ice-blocked. The arc-shaped radial cross-section of the inner shell 12 can adapt to the shape of the pipe to be ice-blocked, closely adhering to the pipe and improving heat exchange efficiency. For example, when the number of clamps is two, the radial cross-section of the inner shell 12 can be semi-circular. The arc-shaped radial cross-sections of both the inner shell 12 and the outer shell 11 can maintain the uniformity of the flow channel, achieving uniform heat exchange in the pipe to be ice-blocked. Accordingly, the shape of the end plate 13 matches the shapes of the inner shell 12 and the outer shell 11.
[0050] In some embodiments, the housing 1, the first rib 2, and the second rib 3 are all made of aluminum alloy. This makes the ice-blocking device lightweight, easy to transport and install, and provides excellent thermal conductivity, thus improving heat exchange efficiency.
[0051] Understandably, the ice-blocking device of this invention can be applied not only to ice-blocking pipes but also to other structural components requiring ice blocking. During relocation, the shape of the inner shell 12 is adaptively changed to alter the shape of the hollow clamp 5, clamping the structural component to be blocked while ensuring the inner shell 12 is as close as possible to the outer surface of the component, thus facilitating subsequent ice-blocking operations.
[0052] By implementing this utility model, the following beneficial effects can be achieved:
[0053] The hollow clamp 5 of this utility model for ice-blocking pipes can be clamped onto the pipe to be ice-blocked, positioning the entire device. The refrigerant enters the enclosed space inside the shell 1 from the refrigerant inlet 15 and flows through the unidirectional flow channel formed by the first rib 2 and the second rib 3 intersecting. At the same time, it extends the heat exchange path, improves the heat exchange efficiency, and improves the utilization rate of the refrigerant, thus achieving efficient ice-blocking of the pipe to be ice-blocked.
[0054] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.
Claims
1. An ice-blocking device for pipelines, characterized in that, Includes at least two clamps, and the at least two clamps together hold and fix the pipe to be blocked by ice; Any of the clamps includes a housing (1) with an internal enclosed space, a plurality of first ribs (2) and a plurality of second ribs (3), wherein the first ribs (2) are disposed in the internal enclosed space and fixedly connected to the first inner wall of the housing (1), and the second ribs (3) are disposed in the internal enclosed space and fixedly connected to the second inner wall of the housing (1), wherein the first ribs (2) and the second inner wall are separated by a gap, and the second ribs (3) and the first inner wall are separated by a gap, wherein the first ribs (2) and the second ribs (3) are interlaced to form a flow channel; The housing (1) has at least one refrigerant inlet (15) for refrigerant input and at least one refrigerant outlet (16) for refrigerant output. The refrigerant inlet (15) is connected to the first end of the flow channel, and the refrigerant outlet (16) is connected to the second end of the flow channel. The housing (1) is concave, and at least two housings (1) corresponding to at least two clamps are detachably connected by connectors (4) to form a hollow clamp (5) for clamping the pipe to be blocked by ice.
2. The ice-blocking device for pipelines according to claim 1, characterized in that, The housing (1) of any of the clamps includes an outer shell (11), an inner shell (12), at least two end plates (13) and at least two side plates (14), the outer shell (11) and the inner shell (12) are arranged at intervals relative to each other, each end plate (13) is fixedly connected to the end of the outer shell (11) and the inner shell (12) respectively, and each side plate (14) is fixedly connected to the side of the outer shell (11) and the inner shell (12) respectively; The refrigerant inlet (15) and refrigerant outlet (16) are provided on any of the outer shells (11); at least two of the side plates (14) of any of the clamps are detachably connected to at least two of the side plates (14) of any other clamp, so that all the inner shells (12) of at least two clamps are combined to form the hollow clamp (5) for the pipe to be blocked by ice.
3. The ice-blocking device for pipelines according to claim 2, characterized in that, In any of the fixtures, the first rib (2) is fixedly connected to the outer shell (11) and has a gap between it and the inner shell (12), and the second rib (3) is fixedly connected to the inner shell (12) and has a gap between it and the outer shell (11) to form the flow channel.
4. The ice-blocking device for pipelines according to claim 3, characterized in that, An S-shaped flow channel is formed between adjacent first ribs (2) and second ribs (3).
5. The ice-blocking device for pipelines according to claim 3, characterized in that, A gap is provided between the first rib (2) and at least one of the end plates (13), and / or, a gap is provided between the second rib (3) and at least one other end plate (13) that is different from the gap end plate (13) corresponding to the first rib (2).
6. The ice-blocking device for pipelines according to claim 2, characterized in that, The connector (4) includes a plurality of magnetic elements, at least one of the magnetic elements is fixedly installed on any of the side plates (14), and at least two of the side plates (14) of any of the clamps are magnetically attracted to at least two of the side plates (14) of any other clamps by the magnetic elements.
7. The ice-blocking device for pipelines according to claim 6, characterized in that, Multiple magnetic components are fixedly installed on any of the side plates (14).
8. The ice-blocking device for pipelines according to claim 6, characterized in that, The magnetic component is a neodymium magnet.
9. The ice-blocking device for pipelines according to any one of claims 2-7, characterized in that, The radial cross-section of the inner shell (12) is arc-shaped, and the radial cross-sections of the inner shells (12) of at least two of the clamps are spliced together to form a circle; and / or, the radial cross-section of the outer shell (11) is arc-shaped, and the radial cross-sections of the outer shells (11) of at least two of the clamps are spliced together to form a circle.
10. The ice-blocking device for pipelines according to any one of claims 1-7, characterized in that, The shell (1), the first rib (2) and the second rib (3) are all made of aluminum alloy.