Pipe joint made of memory alloy and pipe connecting tool

Abstract

The utility model provides a pipe joint adopting memory alloy and a pipe connecting tool, and belongs to the technical field of pipeline engineering. The pipe joint comprises the pipe joint body and the reinforcing sleeve, so that the two ends of the pipe joint body have higher connection strength, the pipe joint body and the reinforcing sleeve are easy to machine and manufacture, and the pipe joint can be suitable for being used in more scenes. The pipe connecting tool is used for installing the pipe connector made of the memory alloy and comprises a first clamping body, a second clamping body, a plurality of elastic assemblies, a plurality of heating assemblies and a heat preservation layer, one end of the second clamping body is rotationally connected with the first clamping body, and a containing space can be formed between the second clamping body and the first clamping body; the plurality of elastic components are annularly arranged on the first clamp body and the second clamp body; the plurality of heating assemblies are arranged in one-to-one correspondence with the elastic assemblies and are fixedly arranged on the elastic assemblies; the heat preservation layers are arranged on the inner sides of the first clamping body and the second clamping body, and safe and stable heating of the pipe joint made of the memory alloy can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline engineering, and more specifically, relates to a pipe joint and a pipe connection tooling using shape memory alloy. Background Art

[0002] Nickel-titanium-based shape memory alloy is widely used in engineering fields such as aerospace and biomedicine because of its good shape memory effect and excellent superelastic properties.

[0003] Currently, in order to ensure the connection strength, the pipe joint using shape memory alloy usually needs to have a certain thickness. However, due to the characteristics of heating and shrinking, the thickness cannot be too large. Moreover, in some scenarios with relatively high requirements for connection strength, in order to avoid slippage, the existing pipe joints usually have raised or recessed parts for clamping at both ends. However, this structure has relatively high requirements for processing and manufacturing. The above two limitations lead to relatively high requirements for the shape and specifications of the existing pipe joints using shape memory alloy. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pipe joint and a pipe connection tooling using shape memory alloy, so as to solve the technical problem that the existing thickness and structural limitations lead to relatively high requirements for the shape and specifications of the existing pipe joints using shape memory alloy.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a pipe joint using shape memory alloy, which includes a pipe joint body and a reinforcing sleeve. The pipe joint body is a tubular structure made of shape memory alloy; the reinforcing sleeve is a tubular structure made of shape memory alloy and is used to sleeved at both ends of the pipe joint body.

[0006] Combined with the above technical solution, in a possible implementation manner, the contact part between the pipe joint body and the reinforcing sleeve is provided with friction lines.

[0007] Combined with the above technical solution, in a possible implementation manner, the inner walls of at least both ends of the pipe joint body are provided with mesh-shaped grooves.

[0008] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a pipe connection tooling for installing the above-mentioned pipe joint using shape memory alloy, which includes a first clamp body, a second clamp body, a plurality of elastic components, a plurality of heating components and a heat preservation layer. One end of the second clamp body is rotatably connected to the first clamp body and can form an accommodation space with the first clamp body; the plurality of elastic components are arranged in a circular arrangement on the first clamp body and the second clamp body; the plurality of heating components are arranged corresponding to the elastic components one by one and are fixedly arranged on the elastic components; the heat preservation layer is arranged on the inner sides of the first clamp body and the second clamp body.

[0009] Combined with the above technical solution, in a possible implementation, the first clamping body includes a first arc-shaped plate, a first hinge seat and a first handle. The first hinge seat is fixedly connected to one end of the first arc-shaped plate; the first handle is fixedly connected to the other end of the first arc-shaped plate; the second clamping body includes a second arc-shaped plate, a second hinge seat and a second handle. The second arc-shaped plate cooperates with the first arc-shaped plate to form a receiving space; the second hinge seat is fixedly connected to one end of the second arc-shaped plate and is hinged to the first hinge seat; the second handle is fixedly connected to the other end of the second arc-shaped plate.

[0010] Combined with the above technical solution, in a possible implementation, both the first arc-shaped plate and the second arc-shaped plate are provided with sliding holes. The elastic component includes a sliding rod, a heat insulation block and an elastic member. The sliding rod is slidably inserted into the sliding hole; the heat insulation block is fixedly arranged at one end of the sliding rod located inside the first arc-shaped plate or the second arc-shaped plate and is used for installing the heating component; the elastic member is arranged on the sliding rod, and one end abuts against the first arc-shaped plate or the second arc-shaped plate, and the other end abuts against the heat insulation block.

[0011] Combined with the above technical solution, in a possible implementation, the heating component includes a cone and a heating element. The cone is connected to the heat insulation block; the heating element is arranged inside the cone to heat the cone.

[0012] Combined with the above technical solution, in a possible implementation, the heat insulation layer includes an asbestos mesh ring and a rock wool layer. The asbestos mesh ring is a bent semi-circular structure and is located between the heat insulation block and the sliding rod, and both ends are connected to the first arc-shaped plate or the second arc-shaped plate; the rock wool layer is filled between the asbestos mesh ring and the first arc-shaped plate or the second arc-shaped plate.

[0013] Combined with the above technical solution, in a possible implementation, elastic supports are arranged inside the rock wool layer.

[0014] Combined with the above technical solution, in a possible implementation, a lock is arranged between the first handle and the second handle.

[0015] The beneficial effects of the pipe joint using shape memory alloy provided by the present utility model are as follows: Compared with the prior art, when the present utility model is installed, first, two reinforcing sleeves are put on the pipe to be connected, then the pipe joint body is put on the pipe to be connected and heated to make it shrink and fit tightly. After that, the two reinforcing sleeves are put on both ends of the pipe joint body and heated again, so that the reinforcing sleeves are clamped on both ends of the pipe joint body to strengthen the connection part; in this way, higher connection strength can be achieved at both ends of the pipe joint body, and the processing and manufacturing of the pipe joint body and the reinforcing sleeves are relatively simple, and it can be suitable for use in more scenarios.

[0016] The beneficial effects of the pipe connection tool provided by the present utility model are as follows: Compared with the prior art, when in use, the present utility model clamps the connection part to be joined by the first clamping body and the second clamping body, and makes the heating component adhere to the connection part to be joined by the elasticity of the elastic component to heat the pipe joint. Moreover, through the heat preservation layer, the heated part can be heat-preserved, and excessive heat diffusion to the first clamping body and the second clamping body can be avoided, thereby preventing the clamping bodies from overheating. At the same time, under the action of the elastic component, the heating component will move along with the contraction of the pipe joint and always maintain the state of adhering to the connection part to be joined, enabling stable heating; in this way, safe and stable heating of the pipe joint made of shape memory alloy can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a pipe joint made of shape memory alloy provided by an embodiment of the present utility model;

[0019] Figure 2 It is a longitudinal sectional structural diagram of a pipe joint made of shape memory alloy provided by an embodiment of the present utility model;

[0020] Figure 3 It is a side perspective structural diagram of a pipe connection tool made of shape memory alloy provided by an embodiment of the present utility model;

[0021] Figure 4 It is a structural diagram of the elastic component part of a pipe connection tool made of shape memory alloy provided by an embodiment of the present utility model.

[0022] Among them, the reference numerals in the drawings are as follows:

[0023] 10. Pipe joint body; 11. Mesh groove; 20. Reinforcing sleeve;

[0024] 30. First clamping body; 31. First arc-shaped plate; 32. First hinge seat; 33. First handle; 34. Lock;

[0025] 40. Second clamping body; 41. Second arc-shaped plate; 42. Second hinge seat; 43. Second handle;

[0026] 50. Elastic component; 51. Slide bar; 52. Heat insulation block; 53. Elastic member;

[0027] 60. Heating component; 61. Cone; 62. Heating element;

[0028] 70. Thermal insulation layer; 71. Asbestos mesh ring; 72. Rock wool layer;

[0029] 80. Pipe to be connected. Detailed implementation mode

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0031] It should be further noted that the drawings and embodiments of the present utility model mainly describe and explain the concept of the present utility model. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described. However, on the premise that those skilled in the art understand the concept of the present utility model, those skilled in the art can implement the above specific forms and settings in a well-known manner.

[0032] When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] The orientation terms "inside" and "outside" refer to the inside and outside of the contour of each component itself. The terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0034] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the attached figure is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, and corresponding interpretations are made for the spatial relative descriptions used here.

[0035] The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0036] Now, the pipe joint and the pipe connecting tooling using shape memory alloy provided by the present utility model will be described.

[0037] As Figure 1 and Figure 2 shown, the first embodiment of the present utility model provides a pipe joint using shape memory alloy, which includes a pipe joint body 10 and a reinforcing sleeve 20. The pipe joint body 10 is a tubular structure made of shape memory alloy; the reinforcing sleeve 20 is a tubular structure made of shape memory alloy and is used to sleeve both ends of the pipe joint body 10.

[0038] Compared with the prior art, for the pipe joint using shape memory alloy provided in this embodiment, during installation, first, the two reinforcing sleeves 20 are put on the pipe to be connected, then the pipe joint body 10 is sleeved on the pipe to be connected and heated to make it shrink and fit tightly. After that, the two reinforcing sleeves 20 are sleeved on both ends of the pipe joint body 10, and heating is carried out again so that the reinforcing sleeves 20 are clamped on both ends of the pipe joint body 10 to strengthen the connection part; in this way, higher connection strength can be achieved at both ends of the pipe joint body 10, and the processing and manufacturing of both the pipe joint body 10 and the reinforcing sleeve 20 are relatively simple, and it can be suitable for use in more scenarios.

[0039] As Figure 1 and Figure 2 shown, a specific embodiment provided by the present utility model based on the first embodiment is as follows:

[0040] The contacting part of the pipe joint body 10 and the reinforcing sleeve 20 is provided with friction lines to ensure the fastening after installation.

[0041] The inner walls at least at both ends of the pipe joint body 10 are provided with mesh grooves 11 for accommodating sealant, so as to further improve the sealing performance. Before connecting the pipes, the sealant is applied to the inner walls at both ends of the pipe joint body 10. When the pipe joint body 10 shrinks during heating, the excess sealant in the mesh grooves 11 can be extruded.

[0042] As Figure 3 and Figure 4 shown, the second embodiment of the present utility model provides a pipe connection tooling for installing a pipe joint made of shape memory alloy, including a first clamp body 30, a second clamp body 40, a plurality of elastic components 50, a plurality of heating components 60 and a heat preservation layer 70. One end of the second clamp body 40 is rotatably connected to the first clamp body 30 and can form an accommodating space with the first clamp body 30 to accommodate the pipe joint; the plurality of elastic components 50 are arranged in a circular array on the first clamp body 30 and the second clamp body 40; the plurality of heating components 60 are arranged in one-to-one correspondence with the elastic components 50 and are fixedly arranged on the elastic components 50 for heating the pipe joint; the heat preservation layer 70 is arranged on the inner sides of the first clamp body 30 and the second clamp body 40.

[0043] Compared with the prior art, when the pipe connection tooling provided in this embodiment is used, the first clamp body 30 and the second clamp body 40 are used to clamp the connection part to be joined, and the elasticity of the elastic components 50 is utilized to make the heating components 60 adhere to the connection part to be joined to heat the pipe joint. Moreover, through the heat preservation layer 70, the heated part can be heat-preserved, and the excessive heat can be prevented from diffusing to the first clamp body 30 and the second clamp body 40, thereby avoiding overheating of the clamp bodies. At the same time, under the action of the elastic components 50, the heating components 60 will move along with the shrinkage of the pipe joint and always keep adhering to the connection part to be joined, enabling stable heating; in this way, safe and stable heating of the pipe joint made of shape memory alloy can be realized.

[0044] As Figure 1 and Figure 2 shown, a specific embodiment provided by the present utility model on the basis of the second embodiment is as follows:

[0045] The first clamping body 30 includes a first arc-shaped plate 31, a first hinge seat 32, and a first handle 33. The first hinge seat 32 is fixedly connected to one end of the first arc-shaped plate 31; the first handle 33 is fixedly connected to the other end of the first arc-shaped plate 31; the second clamping body 40 includes a second arc-shaped plate 41, a second hinge seat 42, and a second handle 43. The second arc-shaped plate 41 cooperates with the first arc-shaped plate 31 to form an accommodation space; the second hinge seat 42 is fixedly connected to one end of the second arc-shaped plate 41 and is hinged to the first hinge seat 32; the second handle 43 is fixedly connected to the other end of the second arc-shaped plate 41.

[0046] During pipe connection, the first clamping body 30 and the second clamping body 40 are bypassed around the pipe joint sleeved on the part to be connected, and the first handle 33 and the second handle 43 are used to drive the first arc-shaped plate 31 and the second arc-shaped plate 41 to close, so that the heating assembly 60 is attached to the connection part to heat the pipe joint.

[0047] Both the first arc-shaped plate 31 and the second arc-shaped plate 41 are provided with sliding holes. The elastic assembly 50 includes a sliding rod 51, a heat insulation block 52, and an elastic member 53. The sliding rod 51 is slidably inserted into the sliding hole; the heat insulation block 52 is fixedly arranged at one end of the sliding rod 51 located inside the first arc-shaped plate 31 or the second arc-shaped plate 41 and is used for installing the heating assembly 60; the elastic member 53 is arranged on the sliding rod 51, and one end abuts against the first arc-shaped plate 31 or the second arc-shaped plate 41, and the other end abuts against the heat insulation block 52. The elastic member 53 can be an elastic element such as a spring sleeved on the sliding rod 51.

[0048] The heating assembly 60 includes a cone 61 and a heating element 62. The cone 61 is connected to the heat insulation block 52; the heating element 62 is arranged inside the cone to heat the cone 61.

[0049] The heating element 62 can adopt heating elements such as electric heating wires and thermocouples. The power cord of the heating element 62 can pass through the heat insulation layer 70 along the sliding rod 51 and extend to the outside to be connected to a power source. The heating element 62 can also be a container for containing heating materials such as thermite.

[0050] The heat insulation layer 70 includes an asbestos mesh ring 71 and a rock wool layer 72. The asbestos mesh ring 71 is a bent semi-circular structure and is located between the heat insulation block 52 and the sliding rod 51, and both ends are connected to the first arc-shaped plate 31 or the second arc-shaped plate 41; the rock wool layer 72 is filled between the asbestos mesh ring 71 and the first arc-shaped plate 31 or the second arc-shaped plate 41. A diaphragm is arranged between the asbestos mesh ring 71 and the rock wool layer 72 and the elastic member 53 to prevent the asbestos mesh ring 71 and the rock wool layer 72 from being damaged due to the movement of the elastic member 53.

[0051] In order to improve the heat insulation performance, in some embodiments, the asbestos mesh ring 71 is directly connected to the heat insulation block 52; in other embodiments, the sliding rod 51 and the elastic member 53 are made of heat insulation materials.

[0052] An elastic support is provided inside the rock wool layer 72 to maintain the elasticity of the rock wool layer 72.

[0053] A lock 34 is provided between the first handle 33 and the second handle 43 to fix the first handle 33 and the second handle 43 during heating for convenient use.

[0054] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pipe joint using a memory alloy, characterized in that: include: The pipe joint body (10) is a tubular structure made of memory alloy; The reinforcing sleeve (20) is a tubular structure made of a memory alloy and is used to be sleeved on both ends of the pipe joint body (10); The portion where the pipe joint body (10) and the reinforcing sleeve (20) contact each other is provided with friction lines; Net-shaped grooves (11) are provided on the inner walls of at least two ends of the pipe joint body (10).

2. A pipe fitting for installing the pipe joint using the memory alloy as claimed in claim 1, characterized in that: include: A first clamping body (30); A second clamping body (40), one end of which is rotatably connected to the first clamping body (30) and can form a receiving space with the first clamping body (30); A plurality of elastic components (50) are arranged in a ring shape on the first clamping body (30) and the second clamping body (40); A plurality of heating components (60) are arranged in one-to-one correspondence with the elastic components (50) and are fixedly mounted on the elastic components (50); The heat-insulating layer (70) is arranged inside the first clamp (30) and the second clamp (40).

3. The pipe connection tool as claimed in claim 2, characterized in that: The first clamp (30) comprises: A first curved plate (31); A first hinge seat (32) fixedly connected to one end of the first arc-shaped plate (31); A first handle (33) fixedly connected to the other end of the first arc-shaped plate (31); The second clamp (40) comprises: a second arc-shaped plate (41), cooperating with the first arc-shaped plate (31) to form the accommodation space; A second hinge seat (42) is fixedly connected to one end of the second arc-shaped plate (41) and is hinged to the first hinge seat (32); The second handle (43) is fixedly connected to the other end of the second arc-shaped plate (41).

4. The pipe connection tool as claimed in claim 3, characterized in that: The first arc-shaped plate (31) and the second arc-shaped plate (41) are both provided with sliding holes, and the elastic component (50) comprises: A slide rod (51) is slidably disposed in the slide hole; A heat insulation block (52) is fixedly mounted on one end of the slide bar (51) located inside the first arc-shaped plate (31) or the second arc-shaped plate (41), and is used for mounting the heating assembly (60); The elastic member (53) is arranged on the sliding rod (51), and one end of the elastic member abuts against the first arc-shaped plate (31) or the second arc-shaped plate (41), and the other end of the elastic member abuts against the heat insulation block (52).

5. The pipe connection tool as claimed in claim 4, characterized in that: The heating assembly (60) comprises: A cone (61) connected to the heat insulation block (52); A heating element (62) is disposed inside the cone and is used to heat the cone (61).

6. The pipe connection tool as claimed in claim 5, characterized in that: The thermal insulation layer (70) comprises: The asbestos mesh ring (71) is a bent semi-annular structure and is located between the heat insulation block (52) and the slide rod (51), and its two ends are connected to the first arc-shaped plate (31) or the second arc-shaped plate (41); A rock wool layer (72) is filled between the rock wool mesh ring (71) and the first curved plate (31) or the second curved plate (41).

7. The pipe connection tool as claimed in claim 6, characterized in that: An elastic support is provided inside the rock wool layer (72).

8. The pipe connection tool as claimed in claim 3, characterized in that: A lock buckle (34) is provided between the first handle (33) and the second handle (43).

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