CN218935599U - Fiber reinforced composite tube electrofusion flange joint for coal mine - Google Patents
Fiber reinforced composite tube electrofusion flange joint for coal mine Download PDFInfo
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- CN218935599U CN218935599U CN202223297627.7U CN202223297627U CN218935599U CN 218935599 U CN218935599 U CN 218935599U CN 202223297627 U CN202223297627 U CN 202223297627U CN 218935599 U CN218935599 U CN 218935599U
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- fiber reinforced
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Abstract
The utility model relates to a fiber reinforced composite pipe electrofusion flange joint for a coal mine, which belongs to the technical field of pipeline connection and particularly comprises an electrofusion sleeve arranged outside a composite pipe, wherein a first annular baffle is arranged at the front end of the electrofusion sleeve, a sealing ring is further arranged in the electrofusion sleeve, the sealing ring is positioned at the front end of the composite pipe, the sealing ring and the electrofusion sleeve are in hot-fusion connection, a steel sleeve is arranged outside the electrofusion sleeve, a flange is arranged at the end part of the steel sleeve, and an annular groove is arranged on the flange, and the first annular baffle is arranged in the annular groove.
Description
Technical Field
The utility model relates to a fiber reinforced composite tube electrofusion flange joint for a coal mine, belonging to the technical field of pipeline connection.
Background
The pipes used for the underground water supply and drainage pipes of the coal mine are common carbon steel pipes, and have the problems of poor corrosion resistance, heavy weight, easy scaling of the inner wall and the like. The plastic-coated steel pipe has the advantages that a plastic-coated layer is not collision-resistant, scratch-resistant, easy to age and lose efficacy, and a coating layer which falls off blocks a valve and a water pump to influence the safety of the system. In order to solve the problem of the pipe in the underground use process of the coal mine, the current pipe is replaced by a fiber reinforced composite pipe suitable for underground water supply and drainage transportation.
The length of each finished pipe of the fiber reinforced composite pipe is not allowed to be longer than 6 meters under the limitation of underground coal mine transportation conditions, and the leakage risk of the joints is increased due to the increase of the number of the joints in the running process of the whole pipeline system. It is known that fiber reinforced composite (RTP) pipe joints currently on the market are suitable for connection types above 2.0MPa, which are mostly in the form of external buckling and end sealing, i.e. an inner core smaller than the inner diameter of a pipe is inserted into the composite pipe, then a metal sleeve is sleeved on the outer wall of the composite pipe, and buckling is performed along the radial direction of the sleeve by using a buckling machine with corresponding specification, and the form is an external buckling type. Such a joint has the following disadvantages: 1. the buckling mode of the joint has higher requirement on consistency of joint materials, and uneven buckling holding force is easily caused, and more importantly, leakage is caused by sealing failure due to uneven holding force. 2. The processing cost is higher, and the material utilization rate is lower. 3. The corrosion resistance is poor. In order to further solve the problems of the fiber reinforced pipe in the use process, improve the corrosion resistance of the pipe joint, reduce the processing cost and combine the actual conditions, the electric melting flange joint is designed and developed.
Disclosure of Invention
The utility model provides an electric melting flange joint of a fiber reinforced composite pipe for a coal mine, which can solve the reliability of the conventional fiber reinforced composite pipe for the coal mine in the use process, solve the problems of convenience and operability in the process of installing pipes and joints and reduce the cost of pipes.
In order to achieve the above purpose, the technical scheme adopted by the utility model is that the electric melting flange joint of the fiber reinforced composite pipe for the coal mine comprises a composite pipe and a flange, wherein an electric melting sleeve is arranged outside the composite pipe, a first annular baffle is arranged at the front end of the electric melting sleeve, a sealing ring is further arranged in the electric melting sleeve, the sealing ring is positioned at the front end of the composite pipe, the sealing ring and the electric melting sleeve are in hot melting connection, a steel sleeve is arranged outside the electric melting sleeve, the flange is arranged at the end part of the steel sleeve, an annular groove is arranged on the flange, and the first annular baffle is arranged in the annular groove.
Preferably, the outer wall of the composite pipe is further provided with an annular protrusion, one end of the steel sleeve extends to the annular protrusion and is sleeved on the annular protrusion, and the end of the steel sleeve is further provided with a second annular baffle.
Preferably, the first annular baffle protrudes from a surface of the flange.
Preferably, a plurality of annular sealing grooves are formed in the surface of the first annular baffle plate.
Preferably, the length of the sealing ring is not less than 40mm.
Compared with the prior art, the utility model has the following technical effects: the utility model has the advantages of simple structure, convenient operation, excellent sealing performance, corrosion resistance, high pressure resistance, long service life, mature processing technology and capability of greatly reducing the production cost.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of the mounting structure of the present utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, the electric melting flange joint for the fiber reinforced composite pipe for the coal mine comprises a composite pipe 1 and a flange 2, wherein an electric melting sleeve 3 is arranged on the outer portion of the composite pipe 1, a first annular baffle 4 is arranged at the front end of the electric melting sleeve 3, a sealing ring 5 is further arranged in the electric melting sleeve 3, the sealing ring 5 is positioned at the front end of the composite pipe 1, the composite pipe 1 and the sealing ring 5 are in hot melting connection with the electric melting sleeve 3, a steel sleeve 6 is arranged on the outer portion of the electric melting sleeve 3, the flange 2 is arranged at the end portion of the steel sleeve 6, an annular groove 7 is arranged on the flange 2, the first annular baffle 4 is arranged in the annular groove 7, the surface of the first annular baffle 4 protrudes out of the flange 2, and a plurality of annular sealing grooves 10 are arranged on the surface of the first annular baffle 4, so that connection and sealing between pipelines are facilitated.
In the utility model, the whole joint steel-plastic composite structure adopts a polyethylene plastic structure, and the length of the sealing ring is more than or equal to 40mm. The utility model is mainly designed and developed around 3 aspects of ideas: 1, after the integral connection of the reinforced composite pipe, the sealing and the reliability of the connection between the pipe joints in the installation process must be ensured, so that the connection part of the bolt holes is connected by steel to be the optimal design. 2 the problem of end face sealing of the reinforced composite pipe is a main factor directly influencing the service life of the pipe joint, and the end face sealing is necessary for ensuring long-term service performance due to the three-layer structural characteristic of the reinforced pipe, and the corrosion resistance of the pipe joint is also met, so that the plastic substitution of steel is realized. 3 traditional electrofusion flange connects bearing capacity is lower, mainly because steel flange and flange hold in the palm sealed waterline and be split structure, in the installation, the bolt-up just holds in the palm outer lane part with the flange and fastens, makes the flange hold in the palm and has taken place to warp, when inside water pressure exceeds 2.5MPa, the leakage phenomenon can appear in the terminal surface, does not realize the whole atress of plastic flange sealed face.
When the pipe joint and the pipe are assembled, the utility model is carried out according to the following steps: and 1, butt welding the end face sealing ring and the fiber reinforced pipe with the same specification to ensure that the fiber reinforced pipe and the end face sealing ring are on the same axis, and then, using a special blade to treat the outer flanging welding ring to be smooth until the welding seam is completely cooled. 2, sleeving the steel flange sleeve into the fiber reinforced pipe in advance along the axial direction of the pipe, wherein the dimension from the end face is not less than 200mm.3 inserting special electric melting sleeve with corresponding specification, wherein the sealing waterline of the electric melting sleeve is not less than 5mm from the end face of the pipe, 4 using electric melting welding equipment to perform hot melting welding on the special electric melting sleeve and the fiber reinforced pipe, and ensuring the connection reliability between the electric melting pipe and the pipe by taking the welding parameters into consideration during welding. And 5, after the electric melting sleeve is completely cooled, sleeving the special steel armored flange sleeve into the electric melting sleeve along the axial reverse direction, wherein the smooth and firm pipeline hot-melt joint plays roles of leakage resistance and drawing resistance, so that the installation work of one joint is completed.
In addition, the outer wall of the composite pipe 1 is also provided with an annular bulge 8, one end of the steel sleeve 6 extends to the annular bulge 8 and is sleeved on the annular bulge 8, and the end part of the steel sleeve 6 is also provided with a second annular baffle 9. The composite pipe is further connected with the steel sleeve through the annular bulge, so that secondary reinforcement is performed between the composite pipe and the steel sleeve, and meanwhile, the stress of the electric melting sleeve is dispersed, so that the stress can be effectively transferred to the composite pipe, the problem that the electric melting sleeve is stressed and falls off due to overlarge pressure is avoided, and the reliability of long-term operation is ensured.
The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (5)
1. The utility model provides a colliery is with fiber reinforced composite tube electric smelting flange joint, includes composite tube and flange, its characterized in that: the outside of compound pipe installs the electric smelting sleeve, the front end of electric smelting sleeve is provided with first annular baffle, still install the seal ring in the electric smelting sleeve, the seal ring is located the front end of compound pipe, seal ring and electric smelting sleeve hot melt connection, the telescopic externally mounted of electric smelting has the steel sleeve pipe, the flange is installed to the telescopic tip of steel, be provided with the ring channel on the flange, first annular baffle is installed in the ring channel.
2. The fiber reinforced composite tube electrofusion flange joint for coal mines according to claim 1, wherein: the outer wall of the composite pipe is also provided with an annular bulge, one end of the steel sleeve extends to the annular bulge and is sleeved on the annular bulge, and the end part of the steel sleeve is also provided with a second annular baffle.
3. The fiber reinforced composite tube electrofusion flange joint for coal mines according to claim 1, wherein: the first annular baffle protrudes from the surface of the flange.
4. The fiber reinforced composite tube electrofusion flange joint for coal mines according to claim 1, wherein: the surface of the first annular baffle is provided with a plurality of annular sealing grooves.
5. The fiber reinforced composite tube electrofusion flange joint for coal mines according to claim 1, wherein: the length of the sealing ring is not less than 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223297627.7U CN218935599U (en) | 2022-12-09 | 2022-12-09 | Fiber reinforced composite tube electrofusion flange joint for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223297627.7U CN218935599U (en) | 2022-12-09 | 2022-12-09 | Fiber reinforced composite tube electrofusion flange joint for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218935599U true CN218935599U (en) | 2023-04-28 |
Family
ID=86093218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223297627.7U Active CN218935599U (en) | 2022-12-09 | 2022-12-09 | Fiber reinforced composite tube electrofusion flange joint for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218935599U (en) |
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2022
- 2022-12-09 CN CN202223297627.7U patent/CN218935599U/en active Active
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