Biomass fuel boiler steam output pipeline fixing structure

By using a fixing structure of spring rings and rubber sleeves, combined with temperature sensor early warning, the problem of loose connection of boiler steam output pipes caused by thermal expansion and contraction is solved, achieving efficient and low-cost steam transportation.

CN224551019UActive Publication Date: 2026-07-24JINGFU(WUHAN) ENERGY DEVELOPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINGFU(WUHAN) ENERGY DEVELOPMENT CO LTD
Filing Date
2025-10-10
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing boiler steam output pipes are prone to cracking due to thermal expansion and contraction, resulting in loose connections, affecting normal output and increasing maintenance costs.

Method used

The device employs a fixing structure using spring rings and rubber sleeves, combined with a temperature sensor and a leak warning mechanism, to adapt to temperature changes, ensure sealing, and provide timely warnings of leaks.

Benefits of technology

It reduces the probability of maintenance and repair due to thermal expansion and contraction, improves connection sealing, reduces steam leakage, and lowers operating costs and resource waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses biomass fuel boiler steam output pipeline fixed structure, including pipeline fixed establishment, the pipeline fixed establishment includes spring ring and rubber sleeve, the end of spring ring inboard is in accord with the butt joint outer surface of adjacent one group pipeline, and the lower extreme threaded connection of spring ring has connecting bolt, the rubber sleeve is set in the outer surface of adjacent one group pipeline, and the outer surface end of rubber sleeve is equipped with the locking ring symmetrically, the lower extreme penetration of locking ring is connected with locking post, and the end threaded connection of locking post has locking nut. The utility model can avoid the problem caused by thermal expansion and cold shrinkage, reduce the probability of maintenance, and then reduce the use cost, and improve the efficiency of subsequent operation, at the same time, the rubber sleeve is installed on the outside, guarantees the connection leakproofness, avoids the steam leakage, causes the waste of resources, can further save the cost.
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Description

Technical Field

[0001] This utility model relates to the field of boiler steam transmission pipeline technology, specifically a fixed structure for steam output pipeline of biomass fuel boiler. Background Technology

[0002] Boiler steam transmission pipelines are specialized pipeline systems that connect the boiler steam outlet to downstream steam-using equipment (such as heat exchangers, steam turbines, and production steam points). Their core function is to stably deliver the high-temperature and high-pressure steam generated by the boiler to the terminal under safe and efficient conditions, to meet the needs of heating, power drive, or process production. The connection between pipelines requires the use of fixed structures for docking installation.

[0003] Currently, steam output pipelines are connected using flanges. Due to thermal expansion and contraction, this type of connection can lead to loose connections and even cracks, affecting normal steam output. Furthermore, subsequent maintenance and repairs require work stoppages, impacting production and increasing costs. Therefore, a pipeline fixing structure that can solve these drawbacks is needed to improve efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a fixed structure for the steam output pipeline of a biomass fuel boiler, thereby solving the problems mentioned in the background section. To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a fixed structure for the steam output pipeline of a biomass fuel boiler, comprising: A pipe fixing mechanism includes a spring ring and a rubber sleeve. The inner end of the spring ring is attached to the mating outer surface of an adjacent set of pipes, and a connecting bolt is threaded to the lower end of the spring ring. The rubber sleeve is fitted onto the outer surface of the adjacent set of pipes, and locking rings are symmetrically provided at the outer end of the rubber sleeve. A locking pin is threaded through the lower end of the locking ring, and a locking nut is threaded to the end of the locking pin.

[0005] Furthermore, a notch is formed at the center of the end of the connecting bolt.

[0006] Furthermore, it also includes a leakage warning mechanism, which includes a hollow tube with a temperature sensor threadedly connected to the central cavity of the hollow tube, and the detection end of the temperature sensor extends into the rubber sleeve.

[0007] Furthermore, the leakage warning mechanism also includes an opening that extends through one side of the outer surface of the rubber sleeve, and the inner wall of the opening is in close contact with the outer surface of the hollow tube.

[0008] Furthermore, the output terminal of the temperature sensor is electrically connected to the input terminal of an external alarm via a wire.

[0009] Furthermore, it also includes a storage and organization component, which includes a positioning groove and a positioning block. The positioning groove is located on the upper part of the outer surface of the locking ring, and the inner wall of the positioning groove slides against the two sides of the positioning block. The positioning block has a positioning hole that is equidistantly opened in the middle, and a positioning post is fitted inside the positioning hole.

[0010] Furthermore, guide grooves are symmetrically provided on opposite sides inside the positioning groove, and rectangular protrusions are provided on both sides of the positioning block, with the rectangular protrusions extending into the guide grooves.

[0011] This utility model has the following beneficial effects: This invention utilizes spring rings to connect and install the pipes together, adapting to temperature changes and avoiding problems caused by thermal expansion and contraction. This reduces the probability of maintenance and repairs, thereby lowering operating costs and improving the efficiency of subsequent operations. At the same time, the addition of a rubber sleeve on the outside ensures a tight seal, preventing steam leakage and resource waste, further saving costs. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the pipe connection of this utility model; Figure 2 This is a structural diagram of the spring ring of this utility model; Figure 3 This is an enlarged view of section A of this utility model; Figure 4 This is a schematic diagram showing the neat storage of the locking ring of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 11. Spring ring; 12. Connecting bolt; 13. Rubber sleeve; 14. Locking ring; 15. Locking post; 16. Locking nut; 21. Opening; 22. Hollow tube; 23. Temperature sensor; 31. Positioning groove; 32. Guide groove; 33. Positioning block; 34. Positioning hole; 35. Positioning post. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0017] Please see Figure 1-4 As shown, this utility model is a fixed structure for the steam output pipeline of a biomass fuel boiler, comprising: The pipe fixing mechanism includes a spring ring 11 and a rubber sleeve 13. The inner end of the spring ring 11 is attached to the mating outer surface of an adjacent set of pipes, and the lower end of the spring ring 11 is threaded with a connecting bolt 12. The rubber sleeve 13 is sleeved on the outer surface of an adjacent set of pipes, and the outer surface end of the rubber sleeve 13 is symmetrically provided with locking rings 14. The lower end of the locking ring 14 is connected through a locking pin 15, and the end of the locking pin 15 is threaded with a locking nut 16. After the spring ring 11 is locked by the connecting bolt 12, adjacent pipes can be connected and installed. The connection method of using the spring ring 11 can avoid the problem of thermal expansion and contraction due to changes in operating temperature. The locking pin 15, together with the locking nut 16, can be tightened to fix the rubber sleeve 13 through the locking ring 14, thereby improving the sealing at the pipe connection position and preventing steam leakage.

[0018] A slotted notch is provided at the middle of the end of the connecting bolt 12; The flathead screwdriver can be used with an external screwdriver to disassemble and assemble the connecting bolt 12.

[0019] Working principle: During the installation of steam output pipelines, the adjacent set of pipelines to be connected is extended to the inner end of the spring ring 11, and the connecting bolt 12 is tightened using an external screwdriver. That is, the set of pipelines is connected and installed through the spring ring 11. At this time, a rubber sleeve 13 is then fitted on the outside of the connection point. By tightening the locking nut 16, the rubber sleeve 13 is fixed through the locking pin 15 and the locking ring 14.

[0020] This solution adapts to temperature changes, avoiding problems caused by thermal expansion and contraction, reducing the probability of maintenance and thus lowering operating costs and improving the efficiency of subsequent operations. At the same time, the addition of a rubber sleeve 13 on the outside ensures a tight connection, preventing steam leakage and waste of resources, which can further save costs.

[0021] Please see Figure 1-4 As shown, this embodiment is based on the above embodiment: It also includes a leakage warning mechanism, which includes a hollow tube 22, a temperature sensor 23 is threadedly connected to the middle cavity of the hollow tube 22, and the detection end of the temperature sensor 23 extends into the rubber sleeve 13. The output terminal of the temperature sensor 23 is electrically connected to the input terminal of an external alarm via a wire; The hollow tube 22 is connected to the temperature sensor 23. This method allows for direct external disassembly and assembly, saving time and effort. The temperature sensor 23 can be model NST1001. By using the temperature sensor 23 to detect the temperature change of the enclosed space inside the rubber sleeve 13, an early warning of whether steam is leaking can be achieved.

[0022] The leakage warning mechanism also includes an opening 21, which is opened through one side of the upper part of the outer surface of the rubber sleeve 13, and the inner wall of the opening 21 is in close contact with the outer surface of the hollow tube 22. Hole 21 is used to support and install hollow tube 22.

[0023] Working principle: After the above-mentioned pipe connection and installation, a hollow tube 22 is inserted into the opening 21. A temperature sensor 23 is installed in the middle of the hollow tube 22. If steam leakage occurs during the process of steam output from the pipe, the temperature of the enclosed space inside the rubber sleeve 13 detected by the temperature sensor 23 will rise, and the wire will be electrically connected to the external alarm to realize the early warning.

[0024] This solution can provide early warning of steam leaks, preventing steam loss and resource waste, and helping to save costs.

[0025] Please see Figure 1-4 As shown, this embodiment is based on the above embodiment: It also includes a storage and organization component, which includes a positioning groove 31 and a positioning block 33. The positioning groove 31 is opened on the upper part of the outer surface of the locking ring 14, and the inner wall of the positioning groove 31 slides against the two sides of the positioning block 33. The positioning block 33 has a positioning hole 34 that is equidistantly opened in the middle, and a positioning post 35 is fitted inside the positioning hole 34. The positioning groove 31 has symmetrical guide grooves 32 on opposite sides, and the positioning block 33 has rectangular protrusions on both sides, which extend into the guide grooves 32. The sliding of the rectangular protrusion in the guide groove 32 connects the positioning block 33 and the positioning groove 31, that is, connects multiple unused locking rings 14 together, while the engagement between the positioning post 35 and the positioning hole 34 prevents the multiple locking rings 14 located inside from falling off.

[0026] Working principle: When the locking rings 14 are not in use, multiple unused locking rings 14 can be arranged relative to each other, and the positioning block 33 extends into the positioning groove 31. By relying on the sliding between the rectangular protrusion and the guide groove 32, the positioning rings are gradually connected to the multiple positioning grooves 31, that is, the multiple locking rings 14 are connected. At this time, the positioning pin 35 is then fitted into the outermost positioning hole 34 of the connected multiple locking rings 14.

[0027] This solution, with the help of positioning block 33 and positioning groove 31, can neatly store multiple unused locking rings 14, making them easy to carry and meeting usage needs.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fixed structure for the steam output pipeline of a biomass fuel boiler, characterized in that, include: The pipe fixing mechanism includes a spring ring (11) and a rubber sleeve (13). The inner end of the spring ring (11) is attached to the outer surface of the mating of an adjacent set of pipes, and the lower end of the spring ring (11) is threaded with a connecting bolt (12). The rubber sleeve (13) is sleeved on the outer surface of an adjacent set of pipes, and the outer surface end of the rubber sleeve (13) is symmetrically provided with locking rings (14). The lower end of the locking ring (14) is connected through a locking pin (15), and the end of the locking pin (15) is threaded with a locking nut (16).

2. The fixed structure for the steam output pipeline of a biomass fuel boiler according to claim 1, characterized in that: A slot is provided at the middle of the end of the connecting bolt (12).

3. The fixed structure for the steam output pipeline of a biomass fuel boiler according to claim 1, characterized in that: It also includes a leakage warning mechanism, which includes a hollow tube (22), a temperature sensor (23) is threadedly connected to the middle cavity of the hollow tube (22), and the detection end of the temperature sensor (23) extends into the rubber sleeve (13).

4. The fixing structure for the steam output pipeline of a biomass fuel boiler according to claim 3, characterized in that: The leakage warning mechanism also includes an opening (21), which is opened through one side of the upper part of the outer surface of the rubber sleeve (13), and the inner wall of the opening (21) is closely fitted with the outer surface of the hollow tube (22).

5. The fixed structure for the steam output pipeline of a biomass fuel boiler according to claim 3, characterized in that: The output terminal of the temperature sensor (23) is electrically connected to the input terminal of an external alarm via a wire.

6. The fixed structure for the steam output pipeline of a biomass fuel boiler according to claim 1, characterized in that: It also includes a storage and organization component, which includes a positioning groove (31) and a positioning block (33). The positioning groove (31) is opened on the upper part of the outer surface of the locking ring (14), and the inner wall of the positioning groove (31) slides against the two sides of the positioning block (33). The positioning block (33) has a positioning hole (34) equidistantly through the middle, and a positioning post (35) is fitted inside the positioning hole (34).

7. The fixed structure for the steam output pipeline of a biomass fuel boiler according to claim 6, characterized in that: The positioning groove (31) has symmetrical guide grooves (32) on both sides inside, and the positioning block (33) has rectangular protrusions on both sides, which extend into the guide grooves (32).