Telescopic fixing support

Abstract

The utility model discloses a telescopic fixed support belongs to the heat supply engineering technical field. The support includes the telescopic base fixed on the steel roof beam, and the telescopic base inner chamber sets up spring assembly and support, and spring assembly plays the elastic support effect to support, and the support upper end passes through the guide portion of telescopic base and extends outward and is connected steam pipeline. When the pipeline is heated and expands and contracts, the spring assembly allows the support to move vertically, releases stress, and avoids the fixed support damage. The utility model discloses simple structure, reliable, solved the steam pipeline in the high low arrangement scene and caused the stress concentration problem of the displacement of the upward position, improved the security and service life.

Description

Technical Field

[0001] This utility model belongs to the field of heating engineering technology and relates to a retractable fixed bracket. Background Technology

[0002] There are many ways to design and arrange heating steam pipelines. One scenario is that the steam pipelines are arranged at different elevations within the pipe gallery, with the rotary compensator 6 placed horizontally. Figure 2 (As shown).

[0003] Fixed supports are an important piece of equipment in the thermal compensation system of heating steam pipelines. Their function is to connect the steam pipeline to the support surface, fix the steam pipeline, and absorb the thermal expansion force in the system. Their characteristic is that the pipeline displacement at the fixed support is 0. Conventionally, the fixed support body cannot be extended or retracted at multiple angles such as up and down, left and right, and front and back, and no displacement occurs.

[0004] The above arrangement requires a fixed support at the highest point of the pipe gallery. However, when the steam pipe is heated, it expands and contracts due to heat, causing the compensator to activate. The horizontal arm 4 of the steam pipe begins to rotate in an arc around the center of the horizontal arm, generating an upward force. This upward force is applied to the fixed support at the highest point, especially when the pipe diameter is large, resulting in an extremely large force, reaching several tons. Since the fixed support is welded to the pipe and the support surface, it cannot be displaced. Such a large stress cannot be released, which will cause the pipe weld to be pulled and the fixed support to be damaged. This will lead to pipe weld cracking, fixed support damage, steam leakage, and a safety accident. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides a retractable fixed bracket that ensures that the steam pipe does not shift axially or laterally. This effectively solves the problem that when the pipe shifts upward in a vertically arranged scenario, the displacement and stress cannot be released, which can easily damage the fixed bracket.

[0006] According to the technical solution of this utility model: a telescopic fixed bracket, characterized in that: it includes a telescopic base fixed on a steel beam, the inner cavity of the telescopic base is provided with a spring assembly and a bracket, the spring assembly provides elastic support for the bracket, the upper end of the bracket extends outward through the guide part of the telescopic base, and during operation, the upper end of the guide part is fixedly connected to a steam pipe.

[0007] As a further improvement of this utility model, the lower end of the spring assembly is fixed to the base plate of the telescopic base, and the upper end of the spring assembly is fixedly connected to the bottom surface of the bracket.

[0008] As a further improvement of this utility model, the bracket includes an upper plate and a lower plate arranged parallel to each other. The length of the upper plate is greater than the width of the inner hole of the guide part, and the upper plate and the lower plate are welded and fixed together by the bracket telescopic part.

[0009] As a further improvement of this utility model, the lower end of the guide portion extends into the inner cavity of the telescopic base.

[0010] As a further improvement of this utility model, the main body of the telescopic base is reinforced and connected to the base plate by a first stiffening plate.

[0011] As a further improvement of this utility model, the main body and guide part of the telescopic base are reinforced and connected by a second stiffening plate.

[0012] As a further improvement of this utility model, the spring assembly includes a spring bracket, a telescopic support, and a spring. The spring is disposed in the inner hole of the spring bracket, the telescopic support is placed in the inner hole of the spring bracket, and the lower end of the telescopic support is connected to the upper end of the spring.

[0013] As a further improvement of this utility model, two sets of spring assemblies are symmetrically arranged in the inner cavity of the telescopic base to achieve stable support for the bracket.

[0014] The technical advantages of this utility model are as follows: This utility model has a simple, reasonable and ingenious structure. When in use, it can ensure that the steam pipe does not shift in the axial and lateral directions. It effectively solves the problem that when the pipe shifts upward in a vertical arrangement, the displacement and stress cannot be released, which can easily cause damage to the fixed support. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] Figure 1 , 2The components include a telescopic base 1, a guide part 1-1, a base plate 1-2, a first stiffening plate 1-3, a second stiffening plate 1-4, a spring assembly 2, a spring bracket 2-1, a telescopic support column 2-2, a spring 2-3, a bracket 3, an upper plate 3-1, a lower plate 3-2, a cross arm 4, a steam pipe 5, and a rotary compensator 6.

[0020] like Figure 1 , 2 As shown, this utility model is a telescopic fixed support, including a telescopic base 1 fixed to a steel beam. A spring assembly 2 and a support 3 are disposed within the inner cavity of the telescopic base 1. The spring assembly 2 provides elastic support for the support 3, and the upper end of the support 3 extends outward through the guide portion 1-1 of the telescopic base 1. During operation, the upper end of the guide portion 1-1 is fixedly connected to a steam pipe 5. In practical applications, this invention is used as a secondary fixed support; in actual operation, the steam pipe 5 is also supported by a primary fixed support.

[0021] The lower end of spring assembly 2 is fixed to the base plate 1-2 of telescopic base 1, and the upper end of spring assembly 2 is fixedly connected to the bottom surface of bracket 3. When steam pipe 5 is heated and moves upward, bracket 3 compresses spring assembly 2 downward, and spring 2-3 is compressed to absorb stress; when pipe cools down, spring 2-3 recovers, pushing bracket 3 back to its original position. This design allows the bracket to move vertically, releasing the force generated by thermal expansion and contraction.

[0022] The bracket 3 includes an upper plate 3-1 and a lower plate 3-2 arranged parallel to each other. The length of the upper plate 3-1 is greater than the width of the inner hole of the guide part 1-1, ensuring that the bracket will not detach from the guide part 1-1 when moving. The upper plate 3-1 and the lower plate 3-2 are welded and fixed together by the bracket telescopic part 3-3 to form a stable structure. The lower end of the guide part 1-1 extends into the inner cavity of the telescopic base 1, serving as a guide and restricting the bracket to move only vertically, preventing lateral displacement.

[0023] The main body of the telescopic base 1 is reinforced and connected to the base plate 1-2 by a first stiffener 1-3, and the main body of the telescopic base 1 is reinforced and connected to the guide part 1-1 by a second stiffener 1-4. These stiffeners enhance the rigidity and durability of the overall structure and prevent deformation under stress.

[0024] Spring assembly 2 includes spring bracket 2-1, telescopic support 2-2, and spring 2-3. Spring 2-3 is disposed in the inner hole of spring bracket 2-1, and telescopic support 2-2 is placed in the inner hole of spring bracket 2-1, with the lower end of telescopic support 2-2 connected to the upper end of spring 2-3. Telescopic support 2-2 can move with bracket 3 and slide within spring bracket 2-1 to ensure smooth compression and rebound.

[0025] The specifications of springs 2-3 (such as stiffness coefficient k) need to be calculated and selected based on the thermal expansion thrust, expected displacement, and safety factor of steam pipe 5 to ensure that they can effectively buffer stress and provide sufficient restoring force during cold contraction. The main load-bearing components such as the telescopic base 1, bracket 3, and stiffening plates are recommended to be made of Q235B steel or steel of equivalent or higher strength, and the connection strength should be ensured through methods such as full welding.

[0026] To further improve stability, two sets of spring assemblies 2 are installed in the inner cavity of the telescopic base 1, arranged symmetrically, to provide stable support for the bracket 3 and prevent tilting.

[0027] During installation, first fix the telescopic base 1 to the steel beam, and then weld the steam pipe 5 to the upper end of the guide part 1-1. When the pipe is heated, this invention can automatically adjust its height, release stress, and extend the service life of the pipe and support.

[0028] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

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