A detachable glass steel pipe connecting piece

Abstract

The application relates to the technical field of pipeline connection, in particular to a glass fiber reinforced plastic pipe connecting piece convenient to disassemble. The connecting piece comprises a corrugated pipe, two connecting units arranged at the two ends of the corrugated pipe and used for connecting the corrugated pipe and the glass fiber reinforced plastic pipe, a main connecting piece and a secondary connecting piece, the main connecting piece is fixedly connected to the end of the corrugated pipe, the secondary connecting piece is fixedly connected to the end of the glass fiber reinforced plastic pipe, a plurality of bolt fasteners and a plurality of convenient-to-disassemble fasteners are arranged between the main connecting piece and the secondary connecting piece, a packing ring in contact with the secondary connecting piece is arranged on the position, away from the corrugated pipe, of the main connecting piece, and the main connecting piece is slidably connected with a pressing ring used for pressing the packing ring. The packing ring is pressed by the pressing ring, the gap between the main connecting piece and the secondary connecting piece is sealed by the packing ring, when the packing ring needs to be replaced, the packing ring can be replaced after the pressing ring is moved, the main connecting piece and the secondary connecting piece do not need to be separated, the operation steps are reduced, and the replacement operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe connection, in particular to a glass steel pipe connecting piece convenient to disassemble. BACKGROUND

[0002] The pipe connecting piece is mainly used for realizing the physical connection between pipes, and the corrugated pipe compensator is a special connecting piece capable of compensating displacement and absorbing vibration; in an oil pipeline system, the corrugated pipe compensator effectively relieves the thermal expansion and contraction stress of the pipeline caused by temperature change through the elastic deformation of the corrugated pipe thereof, however, in the long-term operation process, the sealing ring at the interface between the compensator and the pipeline is prone to failure due to pipeline vibration and erosion of the fluid medium, and needs to be replaced regularly, and currently the sealing ring needs to be replaced while the upstream and downstream valves are closed and the compensator is separated from the pipeline, and currently the connecting mode of flanges is usually adopted between the corrugated pipe compensator and the pipeline, and a plurality of bolts need to be removed in the process of separating the two, which is complicated and leads to low replacement operation efficiency. SUMMARY

[0003] The present application provides a glass steel pipe connecting piece convenient to disassemble, so as to overcome the shortcomings of complicated steps and low operation efficiency in the process of regularly replacing the sealing ring between the glass steel pipe and the corrugated pipe connector.

[0004] Technical scheme: a glass steel pipe connecting piece convenient to disassemble, comprising: a corrugated pipe; two connecting units respectively arranged at two ends of the corrugated pipe and used for connecting the corrugated pipe and a glass steel pipe; the connecting unit comprises: a main connecting piece and a secondary connecting piece, the main connecting piece is fixedly connected to the end of the corrugated pipe, the secondary connecting piece is fixedly connected to the end of the glass steel pipe, a plurality of bolt fasteners and a plurality of easy-to-disassemble fasteners are arranged between the main connecting piece and the secondary connecting piece, the easy-to-disassemble fastener is composed of a bolt with a hole and a nut, a packing is arranged on the position of the main connecting piece away from the corrugated pipe and in contact with the secondary connecting piece, the main connecting piece is slidingly connected with a pressing ring used for pressing the packing, the main connecting piece is slidingly connected with a sealing bolt annularly distributed and used for pressing the pressing ring, the sealing bolt is threadedly connected with a sealing nut, the main connecting piece is used for providing support for the sealing nut, a length adjusting assembly used for adapting to the gap between two sections of the glass steel pipe is arranged on the main connecting piece, and a temporary sealing assembly used for temporarily sealing the gap between the main connecting piece and the secondary connecting piece is arranged in the main connecting piece.

[0005] Further, the two sides of the sealing nut are in contact with the main connecting piece, the pressing ring is provided with a clamping groove at the position close to the sealing bolt, the end of the sealing bolt is located in the clamping groove, and the clamping groove is used for limiting the movement of the sealing bolt in the axial direction thereof.

[0006] Further, the length adjusting assembly comprises a regulating member fixed to the bellows, the regulating member is slidingly connected with regulating bolts distributed in a ring shape, the regulating bolts are threadedly connected with the main connecting member, the regulating bolts are threadedly connected with a fixing nut and a regulating nut, the fixing nut is in contact with the main connecting member to keep the relative position of the regulating bolts and the main connecting member, the regulating nut is in contact with the regulating member on both sides, and the regulating member is used to limit the movement of the regulating nut in the axial direction of the regulating bolts.

[0007] Further, the temporary sealing assembly comprises a fixed sleeve fixed to the inner side of the bellows near the position of the regulating member, the fixed sleeve is threadedly connected with a pressing sleeve away from the position of the bellows, the pressing sleeve is provided with a pressing slope, the outer side of the pressing slope is sleeved with a sealing ring, the pressing slope is used to press the sealing ring, and the main connecting member and the auxiliary connecting member are in contact with the sealing ring.

[0008] Further, in the direction from the auxiliary connecting member to the bellows, the diameter of the adjacent pressing slope gradually decreases.

[0009] Further, the auxiliary connecting member is provided with a guide ring surface near the side adjacent to the main connecting member, and the guide ring surface is used to facilitate the entry of the pressing ring into the space between the main connecting member and the auxiliary connecting member.

[0010] Further, the sealing ring is fixed with T-shaped members distributed in a ring shape, the main connecting member and the auxiliary connecting member are provided with semicylindrical grooves with the same number as the T-shaped members, the semicylindrical grooves are used to slidingly accommodate the adjacent T-shaped members, and the T-shaped members are used to keep the shape of the sealing ring.

[0011] Further, the pressing sleeve is provided with a limiting groove near the position adjacent to the pressing slope, and the limiting groove is used to embed the sealing ring.

[0012] Further, the pressing sleeve is fixed with a shielding ring at the end away from the bellows, the shielding ring is in contact with the inner side of the auxiliary connecting member, and is used to shield the gap between the pressing sleeve and the auxiliary connecting member.

[0013] Further, the shielding ring is provided with a guide slope, and the guide slope is used to guide the flow of fluid in the glass fiber reinforced plastic pipe.

[0014] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects: the present application seals the gap between the main connecting piece and the secondary connecting piece by extruding the packing ring with the extrusion ring, so that when the packing ring needs to be replaced, it only needs to be replaced after moving the extrusion ring, without the need to separate the main connecting piece and the secondary connecting piece, thereby reducing the operation steps and improving the replacement efficiency.

[0015] The stable connection of the main connecting piece and the secondary connecting piece is realized by the bolt fastener and the detachable fastener, which can reduce the number of nut rotations and facilitate disassembly while ensuring the correct docking position of the main connecting piece and the secondary connecting piece.

[0016] The corrugated pipe is divided into three sections by the regulating means, and the axial length of the connecting piece is changed by compressing and stretching the position of the end of the corrugated pipe to adapt to the spacing of the two pipe sections, so that the connection of the two pipe sections is realized without cutting the pipe and customizing the compensator, improving the installation efficiency, and avoiding adding additional sealing points by controlling the deformation of the corrugated pipe to adapt to the spacing of the two pipe sections, reducing the probability of leakage of the device.

[0017] By changing the axial length of the corrugated pipe, the transmission extrusion cylinder moves, and then the sealing effect of the sealing ring on the gap between the main connecting piece and the secondary connecting piece is changed, so that when the packing ring is in action, the sealing ring is subjected to small extrusion force and does not block the gap between the main connecting piece and the secondary connecting piece, and when the packing ring needs to be replaced, the sealing ring is subjected to increased extrusion force to block the gap between the main connecting piece and the secondary connecting piece, so that the replacement of the packing ring can be realized without cutting the upstream and downstream pipes of the packing ring, improving the oil transmission efficiency, and reducing the probability of leakage of the crude oil in the pipe during the replacement of the packing ring. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective structural schematic view of the present application;

[0019] Figure 2 is a perspective structural sectional view of the secondary connecting piece of the present application;

[0020] Figure 3 is a perspective structural sectional view of the corrugated pipe and the main connecting piece of the present application;

[0021] Figure 4 is a perspective structural sectional view of the main connecting piece and the extrusion ring of the present application;

[0022] Figure 5 is a perspective structural sectional view of the extrusion cylinder and the shielding ring of the present application;

[0023] Figure 6 is a perspective structural schematic view of the sealing ring and the T-shaped piece of the present application.

[0024] In the figure: 1, corrugated pipe, 2, main connector, 3, sub-connector, 4, bolt fastener, 5, easy-to-disassemble fastener, 6, packing, 7, extrusion ring, 701, clamping groove, 702, guide ring surface, 8, sealing bolt, 9, sealing nut, 10, control knob, 11, control bolt, 12, fixing nut, 13, control nut, 14, fixed sleeve, 15, extrusion sleeve, 151, extrusion slope, 152, limiting groove, 16, sealing ring, 17, T-shaped piece, 18, shielding ring, 181, guide slope. DETAILED DESCRIPTION

[0025] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, the example embodiments may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will be omitted. Embodiment 1

[0026] The embodiment provides a glass steel pipe connector convenient to disassemble, which aims to solve the problems of complicated steps, influence on conveying efficiency, resource waste and environmental pollution in the process of periodically replacing the sealing ring between the glass steel pipe and the corrugated pipe connector in the prior art.

[0027] Reference Figures 1 to 4A detachable glass steel pipe connecting piece, comprising: a corrugated pipe 1, the specification of the corrugated pipe 1 is determined according to the gap between two glass steel pipes and the limit deformation of the glass steel pipe; two connecting units are respectively arranged at the left and right ends of the corrugated pipe 1 and are used for connecting the corrugated pipe 1 and the glass steel pipe; the connecting unit comprises: a main connecting piece 2 and a secondary connecting piece 3, the main connecting piece 2 is fixedly connected to the end of the corrugated pipe 1, the secondary connecting piece 3 is fixedly connected to the end of the glass steel pipe, a plurality of bolt fasteners 4 and a plurality of detachable fasteners 5 are arranged between the main connecting piece 2 and the secondary connecting piece 3, wherein the bolt fastener 4 is composed of a common bolt and a nut, the detachable fastener 5 is composed of a bolt with a hole and a nut, the main connecting piece 2 and the secondary connecting piece 3 are provided with holes for the bolt fastener 4 to pass through, the main connecting piece 2 is provided with a groove for accommodating the detachable fastener 5, the secondary connecting piece 3 is hinged with the bolt with a hole of the detachable fastener 5, the bolt fastener 4 and the detachable fastener 5 are used for locking the relative position of the main connecting piece 2 and the secondary connecting piece 3; the number of the bolt fastener 4 and the detachable fastener 5 can be determined according to the outer diameter of the main connecting piece 2, here the bolt fastener 4 is two symmetrically distributed, the detachable fastener 5 is four, and the two bolt fasteners 4 and the four detachable fasteners 5 are distributed in a ring shape at equal intervals, when the main connecting piece 2 and the secondary connecting piece 3 are butt-jointed, the common bolt of the two bolt fasteners 4 is inserted into the corresponding hole of the main connecting piece 2 and the secondary connecting piece 3 to realize the preliminary butt-joint of the main connecting piece 2 and the secondary connecting piece 3, then the bolt with a hole of the detachable fastener 5 on the secondary connecting piece 3 is turned over to make the bolt with a hole of the detachable fastener 5 clamped in the corresponding groove of the main connecting piece 2, and the nuts on the bolt fastener 4 and the detachable fastener 5 are tightened to realize the butt-joint of the main connecting piece 2 and the secondary connecting piece 3, the detachable fastener 5 reduces the number of nut rotation, and improves the convenience of butt-joint and disassembly of the main connecting piece 2 and the secondary connecting piece 3.

[0028] Referring to Figures 2 to 4 , the position of the main connecting piece 2 away from the corrugated pipe 1 is sleeved with a packing 6 in contact with the secondary connecting piece 3, the inner and outer sides of the cylindrical packing 6 are respectively attached to the main connecting piece 2 and the secondary connecting piece 3 to seal the gap between the main connecting piece 2 and the secondary connecting piece 3; the main connecting piece 2 is slidingly connected with an extrusion ring 7, the extrusion ring 7 is used for extruding the packing 6, the main connecting piece 2 is slidingly connected with three sealing bolts 8 distributed in a ring shape, the sealing bolts 8 are used for extruding the extrusion ring 7, the sealing bolts 8 are threadedly connected with sealing nuts 9, the left and right end faces of the sealing nuts 9 are in contact with the main connecting piece 2, and the main connecting piece 2 is used for providing support for the sealing nuts 9; the main connecting piece 2 is provided with a length adjusting assembly for adapting to the gap between the two glass steel pipes, and the main connecting piece 2 is provided with a temporary sealing assembly for temporarily sealing the gap between the main connecting piece 2 and the secondary connecting piece 3.

[0029] The above arrangement can realize that the packing ring 7 extrudes the packing 6 to seal the gap between the main connecting piece 2 and the auxiliary connecting piece 3, so that when the packing 6 needs to be replaced, the packing 6 can be replaced after moving the extrusion ring 7, without separating the main connecting piece 2 and the auxiliary connecting piece 3, thereby reducing the operation steps and improving the replacement efficiency.

[0030] Referring to Figure 4 The position close to the sealing bolt 8 of the extrusion ring 7 is provided with a clamping groove 701, and the end of the sealing bolt 8 is clamped in the clamping groove 701, and the clamping groove 701 is used to limit the movement of the sealing bolt 8 in the axial direction.

[0031] The above arrangement can realize that the packing ring 7 extrudes the packing 6 to seal the gap between the main connecting piece 2 and the auxiliary connecting piece 3, so that when the packing 6 needs to be replaced, the packing 6 can be replaced after moving the extrusion ring 7, without separating the main connecting piece 2 and the auxiliary connecting piece 3, thereby reducing the operation steps and improving the replacement efficiency.

[0032] When the distance between the two pipes does not match the design length of the corrugated pipe compensator due to construction deviation, pipe tolerance and other factors during the assembly of long-distance oil pipelines, the pipe needs to be recut or a compensator with a size that matches the distance between the two pipes needs to be customized, resulting in low installation efficiency.

[0033] Referring to Figures 1 to 3 The length adjusting assembly comprises: a control member 10 fixed to the corrugated pipe 1, the control member 10 being formed by splicing two semicircular rings by bolts, the control member 10 being sleeved at the trough of the corrugated pipe 1, and the part of the corrugated pipe 1 between the control member 10 and the adjacent main connecting piece 2 being stretched or compressed to adjust the axial length of the connecting piece as a whole to adapt to the distance between the two glass steel pipes, and the middle part of the corrugated pipe 1 being used to relieve the thermal expansion and contraction stress of the pipe caused by temperature change; the control member 10 is slidingly connected with three control bolts 11 arranged in a ring shape, the control bolts 11 being threadedly connected with the main connecting piece 2, the control bolts 11 being threadedly connected with a fixing nut 12 and a control nut 13, the fixing nut 12 being in contact with the main connecting piece 2 to lock the relative position of the control bolt 11 and the main connecting piece 2, and the control nut 13 being in contact with the control member 10 on both sides, the control member 10 being used to limit the movement of the control nut 13 in the axial direction of the control bolt 11.

[0034] The above arrangement can realize that the bellows 1 is divided into three sections by the adjusting device 10, the axial length of the connecting piece is changed by compressing or stretching the position of the end of the bellows 1, and the interval between the two pipe sections is adapted, so that the connection between the two pipe sections is realized without cutting the pipe and customizing the compensator, the installation efficiency is improved, the additional sealing point is avoided by controlling the deformation of the bellows 1 to adapt to the interval between the two pipe sections, and the probability of leakage of the device is reduced.

[0035] In a long-distance oil pipeline, when replacing the sealing ring, the upstream and downstream valves often need to be closed and the compensator needs to be separated from the pipeline, which not only causes the interruption of oil transportation and affects the transportation efficiency, but also causes the leakage of crude oil remaining in the pipe after the compensator is disassembled from the pipeline, resulting in resource waste and environmental pollution.

[0036] Referring to Figures 2 to 5 , the temporary sealing assembly comprises a fixing sleeve 14 fixed to the inner side of the bellows 1 near the adjusting device 10, the fixing sleeve 14 is threadedly connected with an extrusion sleeve 15 away from the position of the bellows 1, the extrusion sleeve 15 is provided with an extrusion slope 151, the outer side of the extrusion slope 151 is sleeved with a sealing ring 16, the sealing ring 16 is made of elastic rubber, the cross section of the sealing ring 16 is pentagonal (see Figure 5 ), and the main connecting piece 2 and the auxiliary connecting piece 3 are provided with annular slopes near the position of the sealing ring 16, which are used to guide the sealing ring 16 to move into the gap between the main connecting piece 2 and the auxiliary connecting piece 3 after the sealing ring 16 is extruded; the extrusion slope 151 is used to extrude the sealing ring 16, and the main connecting piece 2 and the auxiliary connecting piece 3 are in contact with the sealing ring 16.

[0037] The above arrangement can realize that the axial length of the bellows 1 is changed, the extrusion sleeve 15 is driven to move, and then the sealing effect of the sealing ring 16 on the gap between the main connecting piece 2 and the auxiliary connecting piece 3 is changed, so that when the packing 6 is in action, the extrusion force on the sealing ring 16 is small and the gap between the main connecting piece 2 and the auxiliary connecting piece 3 is not blocked, and when the packing 6 needs to be replaced, the extrusion force on the sealing ring 16 is increased to block the gap between the main connecting piece 2 and the auxiliary connecting piece 3, so that the replacement of the packing 6 can be realized without cutting the upstream and downstream pipes of the packing 6, the oil transportation efficiency is improved, and the probability of oil leakage in the pipe during the replacement of the packing 6 is reduced.

[0038] Referring to Figure 5 , in the direction from the auxiliary connecting piece 3 to the bellows 1, the diameter of the adjacent extrusion slope 151 gradually decreases, the sealing ring 16 always has a tendency to approach the adjacent main connecting piece 2 by using the guidance of the extrusion slope 151, and then the relative position between the sealing ring 16 and the main connecting piece 2 is stable when the main connecting piece 2 and the auxiliary connecting piece 3 are connected, so that the sealing ring 16 can be installed in place after the main connecting piece 2 and the auxiliary connecting piece 3 are connected.

[0039] Referring to Figure 5 The side of the sub-connection piece 3 close to the adjacent main connection piece 2 is provided with a guide ring surface 702, which is used to facilitate the entry of the coil 6 between the main connection piece 2 and the adjacent sub-connection piece 3, and improve the convenience of replacing the coil 6.

[0040] The step of adjusting the axial length before installation (the subsequent paragraphs of the embodiment take a group of connection units on the left side of the bellows 1 as an example for description): Rotate the control nut 13 to move the control unit 10 left and right, so as to control the axial length of the part of the bellows 1 between the control unit 10 and the main connection piece 2, and then adapt the distance between the two main connection pieces 2 to the distance between the two pipe sections.

[0041] In the process of deformation of the bellows 1, the bellows 1 moves together with the fixed sleeve 14 and the extrusion sleeve 15, so that the relative position of the extrusion sleeve 15 and the main connection piece 2 changes; after the distance between the two main connection pieces 2 is adjusted, the extrusion sleeve 15 is rotated to move the extrusion sleeve 15 relative to the fixed sleeve 14 left and right, so as to reset the extrusion sleeve 15 relative to the main connection piece 2; then the main connection piece 2 is connected and fixed with the adjacent sub-connection piece 3.

[0042] The step of replacing the coil 6: rotate the control nut 13 to move the control unit 10 right, and the control unit 10 deforms the bellows 1, so that the part of the bellows 1 between the control unit 10 and the main connection piece 2 is stretched, and the middle part of the bellows 1 is compressed; in the process of deformation of the bellows 1, the bellows 1 moves the fixed sleeve 14 right, and the fixed sleeve 14 moves the extrusion sleeve 15 right; the extrusion sleeve 15 deforms the sealing ring 16 by extruding the extrusion slope 151, so as to increase the extrusion force of the sealing ring 16, improve the fitting effect of the sealing ring 16 with the main connection piece 2 and the sub-connection piece 3, and then seal the gap between the main connection piece 2 and the sub-connection piece 3.

[0043] Rotate the sealing nut 9 to move the extrusion ring 7 right with the sealing bolt 8, so that the extrusion ring 7 loses the extrusion on the coil 6, and a gap is formed between the left side of the extrusion ring 7 and the sub-connection piece 3; then use a tool to take out the coil 6, and wind a new coil 6 on the left side of the extrusion ring 7 on the main connection piece 2; then reverse rotate the sealing nut 9 to move the extrusion ring 7 left with the sealing bolt 8, and the extrusion ring 7 moves the coil 6 left, and the guide ring surface 702 guides the coil 6 to enter between the main connection piece 2 and the sub-connection piece 3, so as to seal the gap between the main connection piece 2 and the sub-connection piece 3.

[0044] Reverse rotate the control nut 13 to move the control unit 10 left and reset, and the bellows 1 restores its shape, the fixed sleeve 14 and the extrusion sleeve 15 reset, and the sealing ring 16 restores its shape under the elastic force of itself, so as to release the sealing of the gap between the main connection piece 2 and the sub-connection piece 3. Embodiment 2

[0045] This embodiment is further optimized on the basis of Embodiment 1.

[0046] Referring to Figure 3 and Figure 6 , the sealing ring 16 is fixed with annularly distributed T-shaped pieces 17, and the T-shaped pieces 17 and the sealing ring 16 are produced by integral injection molding; the main connecting piece 2 and the auxiliary connecting piece 3 are both provided with annularly distributed and same number of T-shaped pieces 17 semi-cylindrical grooves, the semi-cylindrical grooves are used for sliding the adjacent T-shaped pieces 17, so that the T-shaped pieces 17 can move in the radial direction of the main connecting piece 2 and the auxiliary connecting piece 3, and the T-shaped pieces 17 are used to maintain the shape of the sealing ring 16, reduce the influence of the friction between the sealing ring 16 and the extrusion cylinder 15, and reduce the probability of the main connecting piece 2 and the auxiliary connecting piece 3 shifting in the left and right directions. Embodiment 3

[0047] This embodiment is further optimized on the basis of Embodiment 2.

[0048] Referring to Figure 4 and Figure 5 , the extrusion cylinder 15 is provided with a limiting groove 152 near the position of the adjacent extrusion slope 151, the limiting groove 152 is used for embedding the sealing ring 16, the inner diameter of the sealing ring 16 in the free state is smaller than the minimum diameter of the extrusion slope 151, that is, initially, the sealing ring 16 is in a tensile deformation state, so that the sealing ring 16 is embedded in the limiting groove 152 under the action of its own elasticity, and then the T-shaped piece 17 is used to limit the circumferential rotation of the sealing ring 16, and the sealing ring 16 is used to limit the rotation of the extrusion cylinder 15, thereby maintaining the stability of the relative position of the extrusion cylinder 15 and the fixed cylinder 14. Embodiment 4

[0049] This embodiment is further optimized on the basis of Embodiment 3.

[0050] Referring to Figures 3 to 5 , the extrusion cylinder 15 is fixed with a shielding ring 18 at the end away from the corrugated pipe 1, the shielding ring 18 is made of elastic rubber material, the shielding ring 18 contacts the inner side of the adjacent auxiliary connecting piece 3, and is used to shield the gap between the extrusion cylinder 15 and the adjacent auxiliary connecting piece 3, so as to prevent the particles in the pipe from entering the outer side of the extrusion cylinder 15 and affecting the movement of the extrusion cylinder 15; the shielding ring 18 is provided with a guide slope 181, the guide slope 181 is used to guide the flow of the fluid in the glass steel pipe, and reduce the flow resistance of the shielding ring 18 to the fluid in the pipe.

[0051] The above embodiments only illustrate the technical idea of the present application, and cannot limit the protection scope of the present application, any modification made according to the technical idea of the present application on the basis of the technical scheme falls within the protection scope of the present application; the technologies not involved in the present application can be realized by the prior art.

Claims

1. A fiberglass pipe connector that is easy to disassemble, characterized in that, include: Bellows (1); Two connecting units are respectively disposed at both ends of the corrugated pipe (1) for connecting the corrugated pipe (1) and the fiberglass pipe; The connection unit includes: The main connector (2) and the auxiliary connector (3) are fixed to the end of the corrugated pipe (1) and the auxiliary connector (3) is fixed to the end of the fiberglass pipe. A number of bolt fasteners (4) and a number of easy-to-remove fasteners (5) are provided between the main connector (2) and the auxiliary connector (3). The easy-to-remove fasteners (5) are composed of bolts with holes and nuts. The main connector (2) is fitted with a packing (6) that contacts the auxiliary connector (3) at a position away from the corrugated pipe (1). The main connector (2) is slidably connected with a compression ring (7) for compressing the packing (6). The main connector (2) is slidably connected with a ring of sealing bolts (8) for compressing the compression ring (7). The sealing bolts (8) are threadedly connected with a sealing nut (9). The main connector (2) is used to provide support for the sealing nut (9). The main connector (2) is provided with a length adjustment component for adapting to the gap between the two fiberglass pipe sections. The length adjustment component includes: An adjustment control (10) is fixed to the bellows (1). The adjustment control (10) is slidably connected to annularly distributed adjustment bolts (11). The adjustment bolts (11) are threadedly connected to the main connector (2). The adjustment bolts (11) are threadedly connected to a fixing nut (12) and an adjustment nut (13). The fixing nut (12) contacts the main connector (2) to maintain the relative position of the adjustment bolts (11) and the main connector (2). Both sides of the adjustment nut (13) are in contact with the adjustment control (10). The adjustment control (10) is used to restrict the movement of the adjustment nut (13) in the axial direction of the adjustment bolts (11). The main connector (2) is provided with a temporary sealing component for temporarily sealing the gap between the main connector (2) and the secondary connector (3); The temporary sealing assembly includes: A fixed sleeve (14) is fixed to the inner side of the bellows (1) near the adjustment control (10). A compression sleeve (15) is threaded to the fixed sleeve (14) away from the bellows (1). The compression sleeve (15) is provided with a compression bevel (151). A sealing ring (16) is sleeved on the outer side of the compression bevel (151). The compression bevel (151) is used to compress the sealing ring (16). The main connector (2) and the auxiliary connector (3) are both in contact with the sealing ring (16).

2. A glass reinforced plastic pipe coupling according to claim 1, characterised in that Both sides of the sealing nut (9) are in contact with the main connector (2). The compression ring (7) is provided with a locking groove (701) near the sealing bolt (8). The end of the sealing bolt (8) is located in the locking groove (701). The locking groove (701) is used to restrict the movement of the sealing bolt (8) in its axial direction.

3. A glass reinforced plastic pipe coupling according to claim 1, characterised in that, The diameter of the extrusion slope (151) gradually decreases in the direction from the auxiliary connector (3) to the corrugated pipe (1).

4. The detachable FRP pipe coupling according to claim 1, wherein The auxiliary connector (3) is provided with a guide ring surface (702) near the side adjacent to the main connector (2), which is used to facilitate the extrusion ring (7) to enter between the main connector (2) and the adjacent auxiliary connector (3).

5. A GRP pipe coupling according to claim 4, characterised in that, The sealing ring (16) is fixed with T-shaped parts (17) distributed in a ring shape, and the main connector (2) and the auxiliary connector (3) are each provided with a number of semi-cylindrical grooves equal to the number of the T-shaped parts (17), which are used for the adjacent T-shaped parts (17) to slide, and the T-shaped parts (17) are used to maintain the shape of the sealing ring (16).

6. A glass reinforced plastic pipe coupling according to claim 1, characterised in that The extrusion cylinder (15) is provided with a limiting groove (152) near the position adjacent to the extrusion slope (151), which is used for the sealing ring (16) to be embedded therein.

7. A glass reinforced plastic pipe coupling according to claim 6, characterised in that, The extrusion cylinder (15) is fixed with a shielding ring (18) at the end away from the corrugated pipe (1), which is in contact with the inner side of the adjacent auxiliary connector (3), and is used to shield the gap between the extrusion cylinder (15) and the adjacent auxiliary connector (3).

8. A glass reinforced plastic pipe coupling according to claim 7, characterised in that, The shielding ring (18) is provided with a guide slope (181), which is used to guide the flow of fluid in the glass fiber reinforced plastic pipe.

Images