A low temperature resistant composite stainless steel pipe

Abstract

The present application relates to a low-temperature resistant composite stainless steel pipe, comprising a steel pipe body, a low-temperature resistant layer is arranged outside the steel pipe body, the low-temperature resistant layer is fixed to the steel pipe body through an installation structure, the installation structure comprises a deformable fixed plate and a plug-in plate, the fixed plate is relatively arranged on the inner wall of the low-temperature resistant layer, and a plurality of groups of relative fixed plates are arranged at intervals in the extension direction of the low-temperature resistant layer; the relative fixed plates are bent in the direction of approaching each other, the plug-in plate is movably connected to the side wall of the low-temperature resistant layer, and the plug-in plate can be inserted between the relative fixed plates, and the fixed plate is deformed and inserted into the outer wall of the steel pipe body. The present application realizes the stable connection between the low-temperature resistant layer and the steel pipe body by plugging the plurality of groups of relative fixed plates arranged at intervals on the low-temperature resistant layer on the steel pipe body, and can also improve the assembly tightness between the low-temperature resistant layer and the steel pipe body, so that the composite stainless steel pipe does not need to be manufactured by a complex process and the low-temperature resistant performance of the composite stainless steel pipe is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of stainless steel pipes, and in particular to a low-temperature resistant composite stainless steel pipe. Background Art

[0002] Steel pipes can be used to transport fluids and powdered solids, exchange heat, and manufacture mechanical parts and containers. They play an important role in modern industry.

[0003] The existing Chinese patent with publication number CN101781122A discloses a processing technology for ceramic composite steel pipes, in which the steel pipes are loaded into a pipe mold of a pipe making machine, and the materials are evenly distributed in the steel pipes by a distributor. End caps are installed at both ends of the steel pipes, and then the pipe making machine is turned on to a speed of 140-160 revolutions per second. At the same time, the steel pipes are heated, and the heat generated by the thermite reaction is used to melt the materials, and the ceramic composite steel pipes are made under the action of centrifugal force.

[0004] With respect to the above-mentioned related technologies, the applicant believes that the current composite stainless steel pipes usually need to be manufactured through relatively complicated processes, which are not very convenient and therefore still need to be improved. Utility Model Content

[0005] In order to make the production process of composite stainless steel pipes more convenient, the present application provides a low-temperature resistant composite stainless steel pipe.

[0006] The low temperature resistant composite stainless steel pipe provided in this application adopts the following technical solution:

[0007] A low-temperature resistant composite stainless steel pipe comprises a steel pipe body, a low-temperature resistant layer is arranged outside the steel pipe body, the low-temperature resistant layer is fixed to the steel pipe body by an installation structure, the installation structure comprises a deformable fixing plate and a plug-in plate, the fixing plates are relatively arranged on the inner wall of the low-temperature resistant layer, and a plurality of groups of relative fixing plates are spaced apart in the extension direction of the low-temperature resistant layer; the side walls of the relative fixing plates are inclined in a direction approaching each other and extend vertically downward, the plug-in plate is movably connected to the side wall of the low-temperature resistant layer, and the plug-in plate can be inserted between the side walls of the relative fixing plates, and the fixing plates are deformed and inserted into the outer wall of the steel pipe body.

[0008] By adopting the above technical scheme, the installation structure can realize the rapid assembly of the low-temperature resistant layer on the steel pipe body, and the multiple groups of relative fixing plates arranged at intervals on the low-temperature resistant layer are plugged into the steel pipe body. On the one hand, a stable connection between the low-temperature resistant layer and the steel pipe body is realized, and on the other hand, the assembly tightness between the low-temperature resistant layer and the steel pipe body can be improved, thereby eliminating the need to adopt complex processes to produce the composite stainless steel pipe and ensuring the low-temperature resistance of the composite stainless steel pipe.

[0009] Preferably, the side walls of the relative fixed plates are inclined to form an inclined surface, the plug-in plate abuts the inclined surface, and the fixed plate is deformed and straightened; the lower part of the fixed plate is bent to form a plug-in plate, and the plug-in plate on the relative fixed plate extends back to back; a slot for the plug-in plate to be plugged in is provided on the steel pipe body, and when the low-temperature resistant layer is covered on the outside of the steel pipe body, the end portion of the plug-in plate is plugged into the slot; when the plug-in plate abuts against the relative fixed plate, the plug-in plate is inserted into the slot.

[0010] By adopting the above technical solution, when the low-temperature resistant layer is initially installed, the end portion of the plug plate is inserted into the slot; the plug plate is further squeezed to squeeze the inclined surface on the fixed plate to cause the fixed plate to straighten, and at the same time, under the limitation of the slot, the plug plate is deeply inserted into the slot, thereby stably connecting the low-temperature resistant layer to the steel pipe body.

[0011] Preferably, the mounting structure further comprises a support plate, the support plate is movably connected in the low temperature resistant layer, and the fixing plate is fixed on the support plate and is disposed under the low temperature resistant layer.

[0012] By adopting the above technical solution, the support plate supports the fixed plate. Through the movement of the support plate in the low-temperature resistant layer, the fixed plate will not hinder the coating process when the low-temperature resistant layer is coated on the outside of the steel pipe body. Then, the support plate can be lowered under the abutment force of the plug-in plate, so that the plug-in plate can be plugged into the slot.

[0013] Preferably, the installation structure further comprises a connecting plate, the plug-in plates are fixed on the connecting plate at intervals, and the connecting plate can abut against the outside of the low-temperature resistant layer.

[0014] By adopting the above technical solution, a plurality of plug-in boards are supported by the connecting board, so that the plug-in boards can be more conveniently plugged in between the corresponding relatively fixed boards, thereby improving the convenience of plugging the plug-in boards into the slots.

[0015] Preferably, the mounting structure further comprises a positioning plate, a positioning groove is provided on the steel pipe body, the positioning plate is fixed to the inner wall of the low temperature resistant layer, and the positioning plate is inserted into and slides along the positioning groove until the low temperature resistant layer is covered outside the steel pipe body.

[0016] By adopting the above technical solution, the cooperation of the positioning plate and the positioning groove realizes the preliminary connection between the low-temperature resistant layer and the steel pipe body, and enables the fixing plate and the plug plate to accurately correspond to the slot in sequence.

[0017] Preferably, the low temperature resistant layer is low temperature resistant silicone rubber.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] The installation structure realizes the rapid assembly of the low-temperature resistant layer on the steel pipe body, and the multiple sets of relative fixing plates arranged at intervals on the low-temperature resistant layer are plugged into the steel pipe body, which, on the one hand, realizes the stable connection between the low-temperature resistant layer and the steel pipe body, and on the other hand, can improve the assembly tightness between the low-temperature resistant layer and the steel pipe body, thereby eliminating the need to adopt a complex process to manufacture the composite stainless steel pipe and ensuring the low-temperature resistance of the composite stainless steel pipe;

[0020] When the low-temperature resistant layer is initially installed, the end portion of the plug plate is inserted into the slot; the plug plate is further pressed against the inclined surface of the fixing plate to cause the fixing plate to straighten, and at the same time, under the restriction of the slot, the plug plate is deeply inserted into the slot, thereby stably connecting the low-temperature resistant layer to the steel pipe body;

[0021] The support plate supports the fixed plate. Through the movement of the support plate in the low-temperature resistant layer, the fixed plate will not hinder the covering process when the low-temperature resistant layer is covered on the outside of the steel pipe body. The connecting plate supports a number of plug-in plates. The connecting plate realizes the unified descent of the plug-in plates. The support plate and the fixed block descend under the abutment force of the plug-in plates, prompting the plug-in plates to be plugged into the slots to complete the positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the partial cross-sectional structure of an embodiment of the present application in which a low-temperature resistant layer is coated on the outside of a steel pipe body after one plug-in board is hidden.

[0024] Explanation of the reference numerals: 1. Steel pipe body; 11. Positioning groove; 12. Slot; 2. Low temperature resistant layer; 3. Mounting structure; 31. Positioning plate; 32. Support plate; 33. Fixing plate; 331. Inclined surface; 332. Insert plate; 34. Connecting plate; 35. Insert plate. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings.

[0026] The present application embodiment discloses a low temperature resistant composite stainless steel pipe, referring to Figure 1 , including a steel pipe body 1, a low-temperature resistant layer 2 is arranged outside the steel pipe body 1, and the low-temperature resistant layer 2 is low-temperature resistant silicone rubber; the low-temperature resistant layer 2 is fixed to the steel pipe body 1 through an installation structure 3, and there is no need to use complex processes to produce the composite stainless steel pipe and ensure the low-temperature resistance of the composite stainless steel pipe.

[0027] Reference Figure 1 The mounting structure 3 also includes a positioning plate 31. A positioning groove 11 is opened on the steel pipe body 1. The positioning plate 31 is relatively fixed to the inner wall of the low-temperature resistant layer 2. The positioning plate 31 is inserted into the corresponding positioning groove 11 and slides until the low-temperature resistant layer 2 is covered outside the steel pipe body 1.

[0028] Reference Figure 1 , 2 The mounting structure 3 also includes a support plate 32 and a deformable fixing plate 33 fixed on the support plate 32. The support plate 32 is movably connected to the low-temperature resistant layer 2. The relative fixing plate 33 is fixed on the support plate 32 and is passed under the low-temperature resistant layer 2. A plurality of groups of relative fixing plates 33 are arranged on the support plate 32 at intervals along the extension direction of the low-temperature resistant layer 2. The side walls of the relative fixing plates 33 are inclined downward in the direction of approaching to form an inclined surface 331, and continue to extend vertically downward. It should be pointed out that the two ends of the connecting plate 34 can be fixed to the low-temperature resistant layer 2 with bolts, thereby squeezing the low-temperature resistant layer 2 to deform to fill the movable gap of the support plate 32.

[0029] Reference Figure 2 The lower part of the relative fixed plate 33 is bent to form an insert plate 332, and the insert plate 332 on the relative fixed plate 33 extends back to back. A slot 12 for inserting the insert plate 332 is opened on the steel pipe body 1. When the low-temperature resistant layer 2 is covered on the outside of the steel pipe body 1, the end part of the insert plate 332 is inserted into the slot 12, and the movement of the insert plate 332 is restricted by the slot 12, so that the process of inserting the insert plate 332 into the slot 12 is smoother.

[0030] Reference Figure 2 The mounting structure 3 also includes a connecting plate 34 and a plug-in plate 35. The connecting plate 34 extends along the extension direction of the steel pipe body 1 and can abut against the outside of the low-temperature resistant layer 2. The plug-in plates 35 are fixed at intervals along the extension direction of the connecting plate 34 on one side of the connecting plate 34 close to the steel pipe body 1, and the plug-in plates 35 can be inserted between the relative fixed plates 33. The plug-in plates 35 squeeze the inclined surface 331 to restore it to a vertical state, thereby driving the plug-in plate 332 to be inserted into the slot 12; a plurality of plug-in plates 35 are supported by the connecting plate 34, so that the plug-in plates 35 can be more conveniently plugged in between the corresponding relative fixed plates 33, thereby improving the convenience of plugging the plug-in plates 332 into the slot 12.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low temperature resistant composite stainless steel pipe, comprising a steel pipe body (1), characterized in that: A low-temperature resistant layer (2) is arranged outside the steel pipe body (1), and the low-temperature resistant layer (2) is fixed to the steel pipe body (1) through a mounting structure (3). The mounting structure (3) includes a deformable fixing plate (33) and a plug-in plate (35). The fixing plate (33) is arranged relative to the inner wall of the low-temperature resistant layer (2), and a plurality of groups of relative fixing plates (33) are arranged at intervals in the extension direction of the low-temperature resistant layer (2); the side walls of the relative fixing plates (33) are inclined in a direction close to each other and extend vertically downward, the plug-in plate (35) is movably connected to the side wall of the low-temperature resistant layer (2), and the plug-in plate (35) can be inserted between the side walls of the relative fixing plates (33), and the fixing plates (33) are deformed and inserted into the outer wall of the steel pipe body (1).

2. The low temperature resistant composite stainless steel pipe according to claim 1, characterized in that: The side wall of the relative fixed plate (33) is inclined to form an inclined surface (331), the plug-in plate (35) abuts against the inclined surface (331), and the fixed plate (33) is deformed and straightened; the lower part of the fixed plate (33) is bent to form a plug-in plate (332), and the plug-in plate (332) on the relative fixed plate (33) extends in opposite directions; the steel pipe body (1) is provided with a slot (12) for the plug-in plate (332) to be plugged in, and when the low-temperature resistant layer (2) is covered on the outside of the steel pipe body (1), the end portion of the plug-in plate (332) is plugged into the slot (12); when the plug-in plate (35) abuts against the relative fixed plate (33), the plug-in plate (332) is inserted into the slot (12).

3. The low temperature resistant composite stainless steel pipe according to claim 1, characterized in that: The mounting structure (3) further comprises a support plate (32), wherein the support plate (32) is movably connected to the low-temperature resistant layer (2), and the fixing plate (33) is fixed to the support plate (32) and is disposed below the low-temperature resistant layer (2).

4. The low temperature resistant composite stainless steel pipe according to claim 1, characterized in that: The mounting structure (3) further comprises a connecting plate (34), the plug-in plates (35) are fixed on the connecting plate (34) at intervals, and the connecting plate (34) can abut against the outside of the low-temperature resistant layer (2).

5. The low temperature resistant composite stainless steel pipe according to claim 1, characterized in that: The mounting structure (3) further comprises a positioning plate (31), a positioning groove (11) is provided on the steel pipe body (1), the positioning plate (31) is fixed to the inner wall of the low-temperature resistant layer (2), and the positioning plate (31) is inserted into and slides along the positioning groove (11) until the low-temperature resistant layer (2) covers the outside of the steel pipe body (1).

6. The low temperature resistant composite stainless steel pipe according to claim 1, characterized in that: The low temperature resistant layer (2) is low temperature resistant silicone rubber.

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