Heat-insulating stainless steel pipe

Abstract

The utility model relates to the technical field of stainless steel pipes, and discloses a heat insulation stainless steel pipe which comprises a stainless steel outer pipe, an installation cylinder and a fixing ring are fixedly installed on the two sides of the stainless steel outer pipe respectively, a connecting cylinder is fixedly installed on the fixing ring, a limiting block is arranged on the connecting cylinder, and a limiting through groove is formed in the installation cylinder. An arc-shaped plate is slidably mounted in the fixing ring, a mounting plate is fixedly mounted on the arc-shaped plate, and a limiting block is fixedly mounted on the mounting plate; a fixing cylinder is fixedly mounted in the fixing ring, a moving rod is slidably mounted on the fixing cylinder, and the arc-shaped plate is fixedly connected with the moving rod; a spring is fixedly installed on the fixing cylinder, and the other end of the spring is fixedly installed on the arc-shaped plate. Whether the two limiting blocks are exposed out of the corresponding limiting through grooves or not can be regulated and controlled in a unified mode, mounting and dismounting movable operation is easy and convenient, the limiting blocks can be continuously located in a certain fixed state, accidental movement cannot happen, and the stability of pipeline connection is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipes, in particular to a heat-insulating stainless steel pipe. Background Art

[0002] Stainless steel pipe is a hollow long round steel, which is widely used in petroleum, chemical, medical, food and other industries to allow fluid to pass through. However, stainless steel has a better thermal conductivity. Once the fluid contains a large amount of heat, the heat will be transferred to the wall of the stainless steel pipe. When repairing the steel pipe or accidentally touching it, it is easy to burn your hands, so the stainless steel pipe needs to be insulated.

[0003] The existing patent document with announcement number CN214643158U discloses a stainless steel pipe based on coating insulation technology, including a pipe body, a connecting groove is opened on the surface of one lateral end of the pipe body, and fixing grooves are opened in the center of both vertical sides of the connecting groove, and connecting blocks are fixedly connected to both vertical side walls of the pipe body, and an empty groove is opened in the center of one vertical side of the connecting block, and sliding grooves are opened on both lateral sides of the empty groove. A pressure plate is arranged inside the empty groove, and the lateral ends of the pressure plate are respectively slidably connected to the inside of the sliding grooves on both sides, and a push rod is fixedly connected to the center of the lower surface of the pressure plate, and the lower end of the push rod extends through the pipe wall to the inside of the fixed groove, and a spring 2 is arranged on the surface of the push rod.

[0004] However, the above device has the following problems when used:

[0005] (1) The device realizes the interconnection between pipes by the cooperation of the fixing block and the fixing groove. However, when disassembling, the fixing blocks on both sides need to leave the fixing groove simultaneously and continuously to realize the disassembly of the pipe. Once the pipe is thick or the installation operation position is limited, it is difficult for a single person to make the fixing block leave the fixing groove and pull out the pipe at the same time. It requires the cooperation of multiple people, which is inefficient and has high labor costs.

[0006] (2) During the production and transportation of the steel pipe, since the fixing block is a raised structure and the inside of the fixing block is exposed outside the pipe body, it is very easy to bump into it during placement and hoisting, causing the fixing block to deform or break, affecting subsequent alignment and connection activities.

[0007] Therefore, we propose a heat-insulating stainless steel pipe to solve the above problems. Utility Model Content

[0008] The purpose of the utility model is to solve the problems existing in the prior art, and to propose an insulated stainless steel pipe, which can uniformly regulate whether two limit blocks are exposed from corresponding limit grooves, and the installation and disassembly operations are simple and convenient, and the limit blocks can be continuously in a fixed state without accidental movement, thereby ensuring the stability of the pipeline connection.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A heat-insulating stainless steel pipe comprises a stainless steel outer pipe, a mounting tube and a fixing ring are fixedly mounted on both sides of the stainless steel outer pipe, a connecting tube is fixedly mounted on the fixing ring, a limiting block is arranged on the connecting tube, and a limiting through groove is arranged on the mounting tube;

[0011] An arc plate is slidably mounted inside the fixed ring, a mounting plate is fixedly mounted on the arc plate, and a limit block is fixedly mounted on the mounting plate;

[0012] A fixing cylinder is fixedly installed inside the fixing ring, a moving rod is slidably installed on the fixing cylinder, and the arc plate is fixedly connected to the moving rod;

[0013] A spring is fixedly installed on the fixing cylinder, and the other end of the spring is fixedly installed on the arc plate.

[0014] Preferably, a bidirectional lead screw is rotatably mounted on the fixing ring, two lead screw nuts are threadedly connected to the bidirectional lead screw, and the lead screw nuts are fixedly connected to the arc plate.

[0015] Preferably, the two lead screw nuts are respectively located in different thread directions of the bidirectional lead screw and are at the same distance from the center portion of the bidirectional lead screw.

[0016] Preferably, a hexagonal hole is provided on one end of the bidirectional lead screw.

[0017] Preferably, two slide grooves are provided on the installation tube, and the slide grooves can allow the limit block to slide, and the limit through groove is located at the end of the slide groove close to the stainless steel outer tube.

[0018] Preferably, two protective sleeves for accommodating the limiting blocks are fixedly mounted on the mounting tube, the protective sleeves are hollow structures, and the top view of the inner circle of the protective sleeves coincides with the top view of the corresponding limiting through grooves.

[0019] Preferably, a stainless steel inner tube is arranged inside the stainless steel outer tube, and a heat insulation layer is filled between the stainless steel outer tube and the stainless steel inner tube.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The utility model is provided with a stainless steel outer tube, a mounting tube, a fixing ring, a connecting tube, a limit block, a bidirectional lead screw, a lead screw nut, a slide groove, a limit slot and an arc plate. By making the two limit blocks approach or move away from each other, the corresponding limit blocks can be driven to move synchronously, so that whether the two limit blocks are exposed from the corresponding limit slots can be uniformly regulated. The installation and disassembly operations are simple and convenient, and the limit blocks can be continuously in a fixed state without accidental movement, thereby ensuring the stability of the pipeline connection.

[0022] (2) The utility model is provided with a protective sleeve, a fixing ring and a connecting tube. When not in use, the limit block is located inside the connecting tube, which facilitates transportation and prevents the raised part from bumping during movement, thereby affecting subsequent connection activities. When in use, the limit block is located inside the protective sleeve. The rigid protective sleeve can prevent the limit block from unnecessary displacement, thereby affecting the stability of the pipeline connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a heat-insulating stainless steel pipe proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of a heat-insulating stainless steel pipe connecting tube proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of a heat-insulating stainless steel pipe installation cylinder proposed by the utility model;

[0026] Figure 4 This is a schematic diagram of a heat-insulating stainless steel pipe arc plate proposed by the utility model;

[0027] Figure 5 This is a schematic diagram of the installation position of a heat-insulating stainless steel pipe limit block proposed by the utility model;

[0028] Figure 6 This is a schematic diagram of the movement principle of a heat-insulating stainless steel pipe arc plate proposed by the utility model;

[0029] Figure 7 This is a schematic cross-sectional view of a heat-insulating stainless steel pipe proposed by the utility model.

[0030] In the figure: 1. stainless steel outer tube; 2. mounting tube; 3. protective sleeve; 4. fixing ring; 5. connecting tube; 6. limit block; 7. bidirectional lead screw; 8. lead screw nut; 9. slide groove; 10. limit through groove; 11. arc plate; 12. fixing tube; 13. moving rod; 14. spring; 15. mounting plate; 16. hexagonal hole; 17. thermal insulation layer; 18. stainless steel inner tube. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] See also Figures 1 to 7 A heat-insulating stainless steel pipe comprises a stainless steel outer pipe 1, on both sides of which a mounting tube 2 and a fixing ring 4 are fixedly installed, a connecting tube 5 is fixedly installed on the fixing ring 4, a limiting block 6 is arranged on the connecting tube 5, a limiting through groove 10 is provided on the mounting tube 2, the mounting tube 2 and the connecting tube 5 are plug-in matched, and the connecting tube 5 can be accommodated inside the mounting tube 2.

[0033] The limiting block 6 is matched with the limiting groove 10 , and the limiting block 6 is slidably installed inside the connecting tube 5 . By making the limiting block 6 match with the limiting groove 10 , quick connection and disassembly between pipes can be achieved.

[0034] Since the sealing and waterproofing between pipes are existing technologies, they are not described in detail here.

[0035] An arc plate 11 is slidably mounted inside the fixing ring 4, a mounting plate 15 is fixedly mounted on the arc plate 11, and the limit block 6 is fixedly mounted on the mounting plate 15;

[0036] There are two arc plates 11, and the two arc plates 11 are respectively located at the upper and lower ends of the fixing ring 4. By changing the height of the arc plates 11, the limit block 6 can be changed synchronously, so that the limit block 6 can be located inside the limit groove 10 and move out of the limit groove 10, thereby facilitating the installation and disassembly between pipes.

[0037] A fixed cylinder 12 is fixedly installed inside the fixed ring 4, a moving rod 13 is slidably installed on the fixed cylinder 12, and the arc plate 11 is fixedly connected to the moving rod 13;

[0038] When the arc plate 11 moves, the moving rod 13 retracts into the fixed tube 12 or moves out of the fixed tube 12 , thereby ensuring that the arc plate 11 can only move in the vertical direction, so that the limit block 6 can extend from the connecting tube 5 .

[0039] A spring 14 is fixedly mounted on the fixed cylinder 12, and the other end of the spring 14 is fixedly mounted on the arc plate 11. The spring 14 can provide an upward supporting force for the arc plate 11, thereby ensuring that when the pipeline is in a normal connection state, the limit block 6 stably and permanently exposes the limit groove 10, thereby ensuring the effect of pipeline connection.

[0040] A bidirectional lead screw 7 is rotatably mounted on the fixing ring 4 , and two lead screw nuts 8 are connected to the bidirectional lead screw 7 via threads. The lead screw nuts 8 are fixedly connected to the arc plate 11 .

[0041] By rotating the bidirectional lead screw 7 , the two lead screw nuts 8 can be moved on the bidirectional lead screw 7 , and the two lead screw nuts 8 move closer to or away from each other, thereby driving the arc plate 11 to move synchronously to achieve a change in the position of the limit block 6 .

[0042] The two lead screw nuts 8 are respectively located in different thread directions of the bidirectional lead screw 7 and are at the same distance from the center of the bidirectional lead screw 7 to ensure that the upper and lower limit blocks 6 are in a synchronous moving state.

[0043] A hexagonal hole 16 is provided on one end of the bidirectional lead screw 7. By inserting a corresponding tool into the hexagonal hole 16, the tool can be rotated to drive the bidirectional lead screw 7 to rotate, so that the two lead screw nuts 8 can be moved closer to or away from each other.

[0044] Two slide grooves 9 are provided on the installation tube 2 , and the slide grooves 9 can be used for the limiting block 6 to slide. The limiting through groove 10 is located at the end of the slide groove 9 close to the stainless steel outer tube 1 .

[0045] The slide groove 9 is used to perform positioning activities. By allowing the limit block 6 to slide on the slide groove 9, when sliding to the end, the limit block 6 is directly above the limit groove 10. At this time, by moving the limit block 6 out, the connection activity between the pipes can be realized.

[0046] Two protective sleeves 3 for accommodating the limiting blocks 6 are fixedly mounted on the mounting tube 2 . The protective sleeves 3 are hollow structures, and a top view of the inner circle of the protective sleeves 3 coincides with a top view of the corresponding limiting through grooves 10 .

[0047] When the limit block 6 is exposed from the limit slot 10, the limit block 6 is inside the protective cover 3. The rigid protective cover 3 can protect the limit block 6 to avoid unnecessary displacement of the limit block 6 due to accidents, which may affect the stability of the pipeline connection.

[0048] A stainless steel inner tube 18 is arranged inside the stainless steel outer tube 1, and an insulation layer 17 is filled between the stainless steel outer tube 1 and the stainless steel inner tube 18. The insulation layer 17 can be one or a combination of silicone insulation pads, glass fiber fabric insulation sleeves, ceramic fiber insulation structures, and high-temperature tape insulation structures.

[0049] The fluid is transported inside the stainless steel inner tube 18, and heat insulation can be achieved through the heat insulation layer 17, which is convenient for operators to operate.

[0050] The working process of the utility model; when not in use, the limit block 6 is located inside the connecting tube 5, which facilitates transportation and prevents the raised part from bumping during movement, thereby affecting subsequent connection activities.

[0051] First, the pipeline is spliced. Since the connecting tube 5 can be accommodated inside the installation tube 2, and the installation tube 2 and the connecting tube 5 are plug-in matched, the limit block 6 is first moved out a small section, and the limit block 6 is placed on the slide groove 9 to perform the positioning activity. Then the limit block 6 is allowed to slide on the slide groove 9. When it slides to the end, the limit block 6 is directly above the limit through groove 10.

[0052] Insert the corresponding tool into the hexagonal hole 16 so that the tool rotates to drive the bidirectional lead screw 7 to rotate, and the two lead screw nuts 8 approach each other. By changing the height of the arc plate 11, the limit block 6 can be exposed from the limit groove 10 and is inside the protective cover 3.

[0053] At this point, adjacent pipes can be connected.

[0054] When disassembly is required, it is only necessary to insert the corresponding tool into the hexagonal hole 16 and rotate the bidirectional lead screw 7 in the opposite direction, so that the limit block 6 can be gradually retracted into the connecting tube 5, and the contact relationship between the limit block 6 and the limit groove 10 is released. At this time, the disassembly activity between adjacent pipes can be realized by sliding the limit block 6 on the slide groove 9.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat-insulating stainless steel pipe, comprising a stainless steel outer pipe (1), a mounting tube (2) and a fixing ring (4) are fixedly mounted on both sides of the stainless steel outer pipe (1), a connecting tube (5) is fixedly mounted on the fixing ring (4), a limiting block (6) is arranged on the connecting tube (5), and a limiting through groove (10) is provided on the mounting tube (2), characterized in that: An arc-shaped plate (11) is slidably mounted inside the fixing ring (4), a mounting plate (15) is fixedly mounted on the arc-shaped plate (11), and a limit block (6) is fixedly mounted on the mounting plate (15); A fixed cylinder (12) is fixedly installed inside the fixed ring (4), a moving rod (13) is slidably installed on the fixed cylinder (12), and the arc plate (11) is fixedly connected to the moving rod (13); A spring (14) is fixedly mounted on the fixed cylinder (12), and the other end of the spring (14) is fixedly mounted on the arc-shaped plate (11); A bidirectional lead screw (7) is rotatably mounted on the fixing ring (4), two lead screw nuts (8) are connected to the bidirectional lead screw (7) via threads, and the lead screw nuts (8) are fixedly connected to the arc plate (11); The two lead screw nuts (8) are respectively located in different thread directions of the bidirectional lead screw (7) and are at the same distance from the center of the bidirectional lead screw (7).

2. The heat-insulated stainless steel pipe according to claim 1, characterized in that: A hexagonal hole (16) is formed on one end of the bidirectional lead screw (7).

3. The heat-insulated stainless steel pipe according to claim 1, characterized in that: Two slide grooves (9) are provided on the mounting tube (2), and the slide grooves (9) can be used for the limit block (6) to slide. The limit through groove (10) is located at the end of the slide groove (9) close to the stainless steel outer tube (1).

4. The heat-insulating stainless steel pipe according to claim 1, characterized in that: Two protective sleeves (3) for accommodating the limiting blocks (6) are fixedly mounted on the mounting cylinder (2); the protective sleeves (3) are hollow structures, and a top view of the inner circle of the protective sleeves (3) coincides with a top view of the corresponding limiting through grooves (10).

5. The heat-insulated stainless steel pipe according to claim 1, characterized in that: A stainless steel inner tube (18) is arranged inside the stainless steel outer tube (1), and a heat insulation layer (17) is filled between the stainless steel outer tube (1) and the stainless steel inner tube (18).

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