Storage tank root welding seam repairing device
The tank root weld repair device, with its multi-layer sealing structure and modular design, solves the problem of weld leakage in natural gas storage tanks, improves leak prevention capabilities and long-term reliability, adapts to environmental changes, and simplifies operating procedures.
Patent Information
- Application Number
- CN202520610348.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Natural gas storage tank welds are prone to leakage in high-pressure, low-temperature, or corrosive environments, leading to safety accidents and economic losses, which are difficult to effectively solve with existing technologies.
A tank root weld repair device was designed, which adopts a multi-layer sealing structure including a binding layer, a carbon fiber reinforcement layer, an epoxy resin layer, and a steel sleeve to form multiple sealing barriers. Combined with a modular design, it is suitable for pressurized or emergency repairs.
It significantly improves the leak-proof capability and long-term reliability of welds, alleviates stress concentration, resists environmental corrosion, simplifies operation procedures, reduces downtime, adapts to tank deformation, and ensures sealing stability.
Smart Images
Figure CN223814569U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of welding seam repair technology, specifically to the storage tank root welding seam repairer. BACKGROUND
[0002] Natural gas storage tank as the key facility of storing and transporting natural gas is widely used in industry, civil and commercial fields. Its safety is directly related to production, life and environment. However, due to the long-term high pressure, low temperature or corrosive environment of the storage tank, welding seam leakage problem occurs from time to time, which may cause serious safety accidents, environmental pollution and economic losses. Therefore, the welding seam leakage treatment of natural gas storage tank becomes the focus of the industry. SUMMARY
[0003] The main purpose of the utility model is to provide a storage tank root welding seam repairer with good sealing performance.
[0004] In order to achieve the above purpose, the technical scheme provided by the utility model is:
[0005] The storage tank root welding seam repairer comprises a binding layer, the binding layer is wound on a connecting pipe, the connecting pipe is fixedly connected with the storage tank by welding, the binding layer is close to the welding seam of the storage tank and the connecting pipe, the thickness of the binding layer gradually decreases from the middle to both ends, a carbon fiber reinforcing layer is arranged outside the binding layer, the carbon fiber reinforcing layer is fixedly and sealingly connected with the part of the storage tank outside the welding seam, an epoxy resin layer is arranged outside the carbon fiber reinforcing layer, the epoxy resin layer is fixedly and sealingly connected with the storage tank and the connecting pipe, a sleeve is arranged outside the epoxy resin layer, and an outer protective layer is arranged outside the sleeve.
[0006] Specifically, the carbon fiber reinforcing layer is provided with at least three layers.
[0007] Specifically, the sleeve is a steel epoxy sleeve.
[0008] Specifically, the binding layer is formed by binding five ropes on the connecting pipe.
[0009] Specifically, the outer protective layer comprises a viscoelastic body, the viscoelastic body is arranged outside the sleeve, one end of the viscoelastic body is sealingly connected with the connecting pipe, the other end of the viscoelastic body is sealingly connected with the storage tank, a PVC protective belt layer is arranged outside the viscoelastic body, and a paint layer is arranged outside the PVC protective belt layer.
[0010] Compared with the prior art, the utility model has the beneficial effects that:
[0011] 1. The step-by-step design of the binding layer, the carbon fiber reinforcing layer and the epoxy resin layer forms a multiple sealing barrier, which significantly improves the anti-leakage ability and long-term reliability of the welding seam.
[0012] 2. The thickness of the binding layer gradually decreases from the middle to both ends, so that the carbon fiber reinforcement layer is concentrated and thickened in the weld area, which specifically enhances the structural strength, while alleviating stress concentration problems and avoiding secondary cracking.
[0013] 3. The steel epoxy sleeve combined with the outer protective layer forms a composite anti-corrosion system, which resists environmental corrosion and extends the service life of the repaired part.
[0014] 4. The modular design, such as the five-rope binding strap for quick fixation and the pre-installation of the sleeve followed by epoxy resin injection, simplifies the on-site operation process and is suitable for pressurized or emergency maintenance scenarios, reducing downtime.
[0015] 5. The materials of each layer combine flexibility and rigidity to adapt to the deformation of the storage tank caused by temperature / pressure fluctuations, ensuring sealing stability. Attached Figure Description
[0016] Figure 1 This is a cross-sectional view of the repairer used to repair the welds of the connecting pipe and the storage tank.
[0017] The components in the attached diagram are named as follows: 1. Storage tank, 2. Connecting pipe, 3. Weld, 4. Bundling layer, 5. Carbon fiber reinforcement layer, 6. Epoxy resin layer, 7. Sleeve, 8. Outer protective layer. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] Example 1: Refer to Figure 1 As shown, the tank root weld repair device includes a binding layer 4, which is wrapped around a connecting pipe 2. The connecting pipe 2 is welded and fixedly connected to the tank 1. The binding layer 4 is close to the weld 3 between the tank 1 and the connecting pipe 2. The thickness of the binding layer 4 gradually decreases from the middle to both ends. The binding layer 4 is formed by binding the connecting pipe 2 with five-rope binding tape.
[0020] A carbon fiber reinforcement layer 5 is provided on the outside of the binding layer 4. The carbon fiber reinforcement layer 5 is bonded, fixed and sealed to the tank 1 part outside the weld 3. The carbon fiber reinforcement layer 5 is provided in at least three layers.
[0021] An epoxy resin layer 6 is provided on the outside of the carbon fiber reinforcement layer 5. The epoxy resin layer 6 is bonded, fixed and sealed to the storage tank 1 and the connecting pipe 2.
[0022] Since the thickness of the binding layer 4 gradually decreases from the middle to the two ends, after the carbon fiber reinforcing layer 5 is set, the thickness of the carbon fiber reinforcing layer 5 between the weld 3 and the epoxy resin layer 6 is large, and after the carbon fiber reinforcing layer 5 is set outside the binding layer 4, the reinforcing effect and the sealing effect on the weld 3 can be improved.
[0023] The sleeve 7 is a steel epoxy sleeve, and the outer protective layer 8 is set outside the sleeve 7.
[0024] When repairing the weld 3 of the storage tank 1 and the connecting pipe 2, the impurities at the weld 3 are cleaned, the five-rope binding belt is used to bind the connecting pipe 2 to form the binding layer 4, the binding layer 4 is the first repair process, the carbon fiber reinforcing glue is prepared, and the three-layer carbon fiber reinforcing layer 5 is formed outside the binding layer 4, the carbon fiber reinforcing layer 5 is the first reinforcing and sealing process, the sleeve 7 is installed outside the carbon fiber reinforcing layer 5, the epoxy resin is injected between the sleeve 7 and the carbon fiber reinforcing layer 5 after the installation of the sleeve 7 is completed, and the epoxy resin layer 6 is formed, the epoxy resin layer 6 is the second reinforcing and sealing process, and the outer protective layer 8 is formed outside the sleeve 7.
[0025] Example two: based on example one, referring to Figure 1 As shown in the figure, the outer protective layer 8 comprises a viscoelastic body, the viscoelastic body is sleeved outside the sleeve 7, one end of the viscoelastic body is sealingly connected with the connecting pipe 2, the other end of the viscoelastic body is sealingly connected with the storage tank 1, a PVC protective belt layer is sleeved outside the viscoelastic body, and a paint layer is arranged outside the PVC protective belt layer.
[0026] After the epoxy resin layer 6 is set, the viscoelastic body is sleeved outside the sleeve 7, the PVC protective belt layer is sleeved outside the viscoelastic body, and the paint layer is arranged outside the PVC protective belt layer, so as to further improve the corrosion resistance and the sealing performance.
[0027] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A storage tank root weld repairer, comprising a binding layer (4) wound on a connecting pipe (2) which is fixedly connected with a storage tank (1) by welding, characterized in that, The bundling layer (4) is close to the weld (3) of the storage tank (1) and the connecting pipe (2), the thickness of the bundling layer (4) gradually decreases from the middle to both ends, the outer side of the bundling layer (4) is provided with a carbon fiber reinforcing layer (5), the carbon fiber reinforcing layer (5) is fixedly connected with the outer side of the weld (3) and the storage tank (1) part, the outer side of the carbon fiber reinforcing layer (5) is provided with an epoxy resin layer (6), the epoxy resin layer (6) is fixedly connected with the storage tank (1) and the connecting pipe (2), and the outer side of the epoxy resin layer (6) is sleeved with a sleeve (7).
2. The tank bottom weld repair tool of claim 1, wherein, The carbon fiber reinforcing layer (5) is provided with at least three layers.
3. The tank bottom weld repair tool of claim 1, wherein, The sleeve (7) is a steel epoxy sleeve.
4. The tank bottom weld repair tool of claim 1, wherein, The bundling layer (4) is bundled on the connecting pipe (2) by five rope bundling belts.
5. The tank bottom weld repair tool of claim 1, wherein, The outer side of the sleeve (7) is sleeved with an outer protective layer (8), the outer protective layer (8) comprises a viscoelastic body, the viscoelastic body is sleeved on the outer side of the sleeve (7), one end of the viscoelastic body is sealingly connected with the connecting pipe (2), the other end of the viscoelastic body is sealingly connected with the storage tank (1), the outer side of the viscoelastic body is sleeved with a PVC protective belt layer, and the outer side of the PVC protective belt layer is provided with a paint layer.