Bent pipe for steam pipeline

Abstract

The bent pipe comprises a pipe body and a heat preservation layer, the outer wall of the pipe body is provided with the heat preservation layer, the outer wall of the heat preservation layer is fixedly connected with a protection shell, the inner wall of the protection shell on the side of the heat preservation layer is fixedly provided with a positioning plate, and the surface of the positioning plate is fixedly provided with a reset rod. And meanwhile, a limiting plate is fixedly installed at the end, away from the positioning plate, of the reset rod, a reset mechanism is arranged on the outer wall of the end of the reset rod, sleeves are arranged on the outer walls of the two ends of the pipe body correspondingly, rubber rings are fixedly connected to the inner walls of the sleeves, and clamping rods are fixed to the outer walls of the two sides, on the sides of the rubber rings, of the pipe body correspondingly. The bent pipe for the steam pipeline is convenient to reset after the bending degree is increased, so that the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe bends, in particular to a pipe bend used for a steam pipeline. Background Art

[0002] Steam pipe refers to the pipeline system for transporting steam, which is commonly found in power plants, pharmaceutical factories, chemical plants and heating systems in civil buildings. The elbows used in steam pipes are an important part of the steam pipe system. Their main function is to change the flow direction of steam. Common ones include carbon steel elbows and stainless steel elbows.

[0003] However, as for the prefabricated steel-in-steel direct-buried bent pipe for steam pipes with publication number CN215410762U and authorization announcement date 20220104, although it can realize the resetting of the pipe cross section, the curvature of the pipe will also increase after deformation, and it is not convenient to reset the device after the curvature increases, thereby reducing the practicability of the device.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original elbows used for steam pipelines. Utility Model Content

[0005] The utility model aims to provide a pipe bend for a steam pipe, so as to solve the problem that the existing pipe bend for a steam pipe mentioned in the background art is inconvenient to reset after the curvature becomes larger, thereby reducing the practicality of the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bend pipe for a steam pipe, comprising a pipe body and an insulation layer, the outer wall of the pipe body is installed with the insulation layer, and the outer wall of the insulation layer is fixedly connected with a protective shell, and the inner wall of the protective shell on the side of the insulation layer is fixedly installed with a positioning plate, and a reset rod is fixedly arranged on the surface of the positioning plate, and a limit plate is fixedly arranged on the end of the reset rod away from the positioning plate, a reset mechanism is arranged on the outer wall of the end of the reset rod, sleeves are respectively arranged on the outer walls of the two ends of the pipe body, and a rubber ring is fixedly connected to the inner wall of the sleeve, and clamping rods are respectively fixed to the outer walls on both sides of the pipe body on the side of the rubber ring.

[0007] Preferably, the protective shell and the limiting plate are fixedly connected.

[0008] Preferably, the reset mechanism comprises a sleeve and a support rod, and the sleeve is movably mounted on the outer wall of the end of the reset rod, and the outer walls on both sides of the sleeve are respectively provided with support rods.

[0009] Preferably, the sleeve and the reset rod form a sliding structure.

[0010] Preferably, the end surface of the sleeve is connected to the positioning plate via a spring.

[0011] Preferably, both ends of the support rod are rotatably connected to the sleeve and the sleeve respectively.

[0012] Preferably, the rubber ring and the tube body are fitted together, and the tube body is made of carbon steel.

[0013] Preferably, the clamping rod and the sleeve are slidably connected.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the tube body is insulated by the insulation layer, and the protective shell protects the tube body at the same time, and the positioning plate and the limit plate ensure the firmness of the protective shell, and when steam flows through the tube body, the heated cross-section of the tube body expands, at which time the tube body squeezes the rubber ring, and the tube body drives the clamping rod to slide relative to the sleeve, and at the same time the curvature of the tube body increases, and then both ends of the tube body simultaneously drive the sleeve to move, and then the sleeve rotates relative to one end of the support rod and drives one end of the support rod to move, and at the same time the other end of the support rod rotates relative to the sleeve and drives the sleeve to move along the reset rod, and then the sleeve compresses the spring to deform, and then when the steam flows out of the tube body, the tube body cools down, and at this time the rubber ring resets and squeezes the tube body to reset the cross-section of the tube body, and at the same time the spring resets and pushes the sleeve so that the support rod pulls the sleeve, thereby driving the two ends of the tube body to reset, and then the curvature of the tube body is reset, so it is easy to reset the device after the curvature increases, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the top-sectional structure of the utility model;

[0016] Figure 2 This is a front view structural diagram of the reset rod of the utility model;

[0017] Figure 3 This is a schematic diagram of the front view structure of the thermal insulation layer of the utility model;

[0018] Figure 4 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 5 It is a partial front view structural schematic diagram of the clamping rod of the utility model.

[0020] In the figure: 1, tube body; 2, insulation layer; 3, protective shell; 4, positioning plate; 5, reset rod; 6, limit plate; 7, reset mechanism; 701, sleeve; 702, support rod; 8, spring; 9, sleeve; 10, rubber ring; 11, clamping rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution: a pipe bend for a steam pipeline, comprising a pipe body 1, an insulation layer 2, a protective shell 3, a positioning plate 4, a reset rod 5, a limit plate 6, a reset mechanism 7, a sleeve 701, a support rod 702, a spring 8, a sleeve 9, a rubber ring 10 and a clamping rod 11, the outer wall of the pipe body 1 is installed with an insulation layer 2, and the outer wall of the insulation layer 2 is fixedly provided with a protective shell 3, and the inner wall of the protective shell 3 on the side of the insulation layer 2 is fixedly connected with a positioning plate 4, and the surface of the positioning plate 4 is fixedly installed with a reset rod 5, and at the same time, the end of the reset rod 5 away from the positioning plate 4 is fixedly connected with the limit plate 6, and the protective shell 3 and the limit plate 6 are fixedly connected, so that the firmness of the protective shell 3 can be improved by the limit plate 6, such as Figure 1-3 As shown, the heat-insulating layer 2 insulates the pipe body 1 , while the protective shell 3 protects the pipe body 1 , and the positioning plate 4 and the limiting plate 6 ensure the firmness of the protective shell 3 .

[0023] A reset mechanism 7 is installed on the outer wall of the end of the reset rod 5. The reset mechanism 7 includes a sleeve 701 and a support rod 702, and the sleeve 701 is movably connected to the outer wall of the end of the reset rod 5, and the outer walls on both sides of the sleeve 701 are respectively installed with support rods 702, so that the spring 8 can be deformed by the reset mechanism 7, so that the spring 8 can be reset to reset the bent pipe. The sleeve 701 and the reset rod 5 are slidably connected, so that the support rod 702 can drive the sleeve 701 to slide along the reset rod 5. The end surface of the sleeve 701 is connected to the positioning plate 4 through the spring 8, so that the sleeve 701 is elastically supported by the spring 8. The two ends of the support rod 702 are respectively rotatably connected to the sleeve 701 and the sleeve 9, so that when the bending degree of the bent pipe increases due to heat, the sleeve 9 drives the support rod 702 so that the support rod 702 drives the sleeve 701 to move.

[0024] Sleeves 9 are respectively provided on the outer walls of both ends of the tube body 1, and a rubber ring 10 is fixedly installed on the inner wall of the sleeve 9, and clamping rods 11 are respectively fixed on the outer walls of both sides of the tube body 1 on the sides of the rubber ring 10. The rubber ring 10 fits the tube body 1, so that when the heated cross-section of the tube body 1 increases, the tube body 1 squeezes the rubber ring 10. The clamping rod 11 and the sleeve 9 form a sliding structure, so that when the heated cross-section of the tube body 1 increases, the clamping rod 11 slides relative to the sleeve 9. At the same time, the sleeve 9 is limited by the clamping rod 11, thereby ensuring the stability between the sleeve 9 and the tube body 1. The tube body 1 is made of carbon steel. The carbon steel tube body 1 can avoid a large change in its caliber under the action of thermal expansion and contraction. When steam flows through the tube body 1, Figure 1-5 As shown, the cross-section of the tube body 1 expands due to heat. At this time, the tube body 1 squeezes the rubber ring 10, and the tube body 1 drives the clamping rod 11 to slide relative to the sleeve 9. At the same time, the curvature of the tube body 1 increases. Then, both ends of the tube body 1 drive the sleeve 9 to move at the same time. Then, the sleeve 9 rotates relative to one end of the support rod 702 and drives one end of the support rod 702 to move. At the same time, the other end of the support rod 702 rotates relative to the sleeve 701 and drives the sleeve 701 to move along the reset rod 5. Next, the sleeve 701 compresses the spring 8 to deform. Then, when the steam flows out of the tube body 1, the tube body 1 cools down. At this time, the rubber ring 10 resets and squeezes the tube body 1 to reset the cross-section of the tube body 1. At the same time, the spring 8 resets and pushes the sleeve 701 so that the support rod 702 pulls the sleeve 9, thereby driving the two ends of the tube body 1 to reset, and then the curvature of the tube body 1 is reset. Therefore, it is easy to reset the device after the curvature increases, thereby improving the practicality of the device.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe bend for a steam pipeline, comprising a pipe body (1) and a thermal insulation layer (2), characterized in that: The outer wall of the tube body (1) is provided with an insulation layer (2), and the outer wall of the insulation layer (2) is fixedly connected to a protective shell (3), and a positioning plate (4) is fixedly installed on the inner wall of the protective shell (3) on the side of the insulation layer (2), and a reset rod (5) is fixedly arranged on the surface of the positioning plate (4), and a limit plate (6) is fixedly arranged on the end of the reset rod (5) away from the positioning plate (4), and a reset mechanism (7) is arranged on the outer wall of the end of the reset rod (5), and sleeves (9) are respectively arranged on the outer walls of both ends of the tube body (1), and a rubber ring (10) is fixedly connected to the inner wall of the sleeve (9), and clamping rods (11) are respectively fixed to the outer walls of both sides of the tube body (1) on the side of the rubber ring (10).

2. The elbow for a steam pipeline according to claim 1, characterized in that: The protective shell (3) and the limiting plate (6) are fixedly connected.

3. The elbow for a steam pipeline according to claim 1, characterized in that: The reset mechanism (7) comprises a sleeve (701) and a support rod (702), wherein the sleeve (701) is movably mounted on the outer wall of the end of the reset rod (5), and the outer walls on both sides of the sleeve (701) are respectively provided with support rods (702).

4. The elbow for a steam pipeline according to claim 3, characterized in that: The sleeve (701) and the reset rod (5) form a sliding structure.

5. The elbow for a steam pipeline according to claim 3, characterized in that: The end surface of the sleeve (701) is connected to the positioning plate (4) via a spring (8).

6. The elbow for a steam pipeline according to claim 3, characterized in that: The two ends of the support rod (702) are rotatably connected to the sleeve (701) and the sleeve (9) respectively.

7. The elbow for a steam pipeline according to claim 1, characterized in that: The rubber ring (10) and the tube body (1) are arranged in close contact with each other, and the tube body (1) is made of carbon steel.

8. The elbow for a steam pipeline according to claim 1, characterized in that: The clamping rod (11) and the sleeve (9) are slidably connected.

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