Protective tool for welded junction of heat distribution pipeline
By using protective equipment consisting of a channel steel frame and bamboo scaffolding at the weld joints of thermal pipelines, safety hazards and environmental impacts in welding operations have been resolved, achieving efficient and low-cost weld protection and improving construction efficiency and quality.
Patent Information
- Application Number
- CN202610107503.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-27
- Publication Date
- 2026-03-06
AI Technical Summary
During the welding of large thermal pipelines, there are safety hazards at the weld joints, which are easily affected by the external environment. Traditional protection methods are ineffective, difficult to adapt to complex construction environments, and increase maintenance costs.
The protective workwear consists of a frame, enclosure structure, and lifting rings. The frame is made of channel steel, the enclosure structure is bamboo planks, which are fixed by steel wire binding. The lifting rings are easy to move and are suitable for crawler cranes and cranes. It can effectively resist the effects of landslides, falling rocks and severe weather.
It improved the safety and quality of welding operations, reduced safety accidents and rework costs, lowered material procurement and transportation costs, and increased construction efficiency.
Smart Images

Figure CN121607837A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of thermal pipeline welding, and in particular to a protective tooling for the weld joint of thermal pipelines. Background Technology
[0002] In the field of large-scale thermal pipeline construction, pipeline welding is a crucial process in this project. When welding large-diameter thermal pipelines, workers need to stay at the weld joint for a long time to perform welding operations. In complex geological environments, pipeline trenches are prone to problems such as collapse and rockfalls, and welding operations in pipeline trenches for a long time pose huge safety hazards.
[0003] Meanwhile, welding operations at the weld joint are easily affected by the external environment, such as pipeline trench collapses, falling rocks, collisions with debris, and severe weather. These factors can easily lead to weld damage and rust, affecting flaw detection results and project quality. Traditional protection methods are mostly simple covering or later repairs, which have poor protective effects and low efficiency. They are difficult to adapt to the needs of complex construction environments for long-term effective protection of weld joints and also increase later maintenance costs. Summary of the Invention
[0004] In order to solve the problems existing in the prior art, the present invention provides a protective tooling for weld joints of thermal pipelines that can reduce safety hazards.
[0005] The present invention provides a protective fixture for weld joints of thermal pipelines, which adopts the following technical solution: 1. A protective fixture for weld joints of thermal pipelines, characterized in that: it includes a frame, a protective structure and a lifting ring, the frame is generally in the shape of a door, the top and outer walls of the frame are provided with protective structures, the lifting ring is fixed to the top of the frame, and the pipeline to be welded is located inside the frame.
[0006] Optionally, the frame is made of welded channel steel or connected by bolts, and the protective structure is bamboo planks, which are fixed to the channel steel by steel wire.
[0007] Compared with the prior art, the present invention has the following technical effects: This protective gear is made from readily available materials, using channel steel from on-site scrap steel as the frame and bamboo planks as the enclosure structure. It is easily assembled by binding with steel wire, making it inexpensive and simple to manufacture. Utilizing on-site materials reduces material procurement and transportation costs, while its simple construction allows for rapid deployment, greatly improving construction efficiency.
[0008] The protective gear is equipped with lifting rings on top, which facilitates the movement of crawler cranes and hoists and allows for precise placement at the welding site. Compared to traditional simple covering methods, it can effectively resist the risks of pipeline trench collapse and rockfall, while also isolating the weld joint from the impact of external mud and sand accumulation, debris collisions, and severe weather. It comprehensively protects the safety of welders and the quality of welds, reducing the probability of safety accidents and weld quality problems during construction. Attached Figure Description
[0009] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a front view of the overall structure of the present invention; Figure 3 This is a top view of the overall structure of the present invention.
[0010] Explanation of the attached diagram labels: 1. Frame; 2. Bamboo plank; 3. Hanging ring. Detailed Implementation
[0011] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 The present invention will be described in further detail below.
[0012] Reference Figures 1-3 This invention discloses a protective fixture for welded joints of thermal pipelines, comprising a frame 1, lifting rings 3, and bamboo planks 2. The frame 1 is a portal frame formed by welding or bolting multiple channel steels. Bamboo planks 2 are installed on the top and outer walls of the frame 1, and the channel steels and bamboo planks 2 are fixed together by steel wire. Three lifting rings 3 are provided, and the three lifting rings 3 are evenly fixed on the top of the frame 1.
[0013] Channel steel is used as the skeleton 1 of the protective tooling. Channel steel has high strength and stability, providing reliable support for the entire tooling. Bamboo planks 2 serve as the enclosure structure. Bamboo planks 2 have a certain degree of flexibility and impact resistance, effectively blocking mud, sand, falling rocks, and other debris. The installation of lifting rings 3 facilitates the movement of the protective tooling by crawler cranes and cranes.
[0014] When using this practical protective equipment, a crawler crane or gantry crane uses the lifting ring 3 to place the device at the welding site of the thermal pipeline in the construction area, ensuring that the position of the equipment is accurate and that the weld joint is within the effective protection range of the protective equipment. At the same time, it is checked whether the bamboo scaffolding 2 is securely tied and whether there is any loosening or falling off. After placement, the construction personnel carry out welding operations. After welding is completed, the device can be placed at the next work site using the crawler crane or gantry crane using the lifting ring 3, realizing the cyclical use of the protective equipment.
[0015] The advantages of this device are that it is convenient to use local materials, simple and easy to operate, can greatly reduce the harm to welders caused by collapses and falling rocks in the trench, reduce the impact of weather on welding operations, improve the construction efficiency and quality of welding operations, and reduce the cost of weld repair, thereby reducing costs.
[0016] Compared with existing technologies, this protective tooling can improve construction efficiency, reduce weld rework, reduce the probability of safety accidents during construction, is suitable for various construction environments, and improve the construction efficiency and quality of thermal pipeline welding operations.
[0017] This protective gear is made from readily available materials. Channel steel from on-site scrap steel serves as the frame 1, and bamboo planks 2 act as the enclosure structure. It can be easily assembled using steel wire binding, making it inexpensive and simple to manufacture. Utilizing on-site materials reduces material procurement and transportation costs, while its simple construction allows for rapid deployment, greatly improving construction efficiency.
[0018] The protective workwear is equipped with a lifting ring 3 on the top, which facilitates the movement of crawler cranes and hoists and can be accurately placed at the welding site. Compared with the traditional simple covering method, it can effectively resist the risk of pipeline trench collapse and rockfall, while isolating the weld joint from the impact of external mud and sand accumulation, debris collision and severe weather. It comprehensively protects the safety of welders and the quality of weld joints, and reduces the probability of safety accidents and weld quality problems during construction.
[0019] The protective fixture at the weld joint is 4-5 meters high and 4-5 meters wide, with the actual dimensions determined based on site conditions. The materials used are readily available on-site, making full use of surplus steel. The fixture's structural dimensions can be adjusted to suit various pipe diameters for welding thermal pipelines, meeting the needs of different construction scenarios. Furthermore, it is easy to install and disassemble, and can be quickly transferred to the next work site for reuse after welding, reducing preparation time, improving overall construction efficiency, and lowering subsequent maintenance costs and quality risks.
[0020] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A heat pipe weld joint protection tool, characterized by: It comprises a skeleton (1), a protective structure and a lifting ring (3), the skeleton (1) is in the shape of a door as a whole, the top and the outer side wall of the skeleton (1) are provided with the protective structure, the lifting ring (3) is fixed on the top of the skeleton (1), and the pipeline to be welded is located in the inside of the skeleton (1).
2. The heat line pipe joint protection tool according to claim 1, wherein: The skeleton (1) is welded or connected by bolts, and the protective structure is a bamboo jumping board (2), which is fixed by steel wire binding with the channel steel.