RTP composite pipe connecting sleeve processing equipment and processing method

Abstract

The application provides an RTP composite pipe connecting sleeve processing equipment and a processing method. The RTP composite pipe connecting sleeve is formed by roll bonding a reinforcing strip on a PE pipe base. The processing equipment comprises a PE pipe base feeding assembly for conveying the PE pipe base to a roll bonding operation position; a reinforcing strip feeding assembly for flattening and conveying a reinforcing strip in a roll to the roll bonding operation position; a reinforcing strip preheating system for preheating the reinforcing strip before it reaches the roll bonding operation position; and a roll bonding system for continuously roll bonding the reinforcing strip and the PE pipe base at the roll bonding operation position to form the RTP composite pipe connecting sleeve. The RTP composite pipe connecting sleeve processing equipment and the processing method can be used for producing a connecting sleeve suitable for connecting a large-diameter RTP composite pipe, and innovates the connecting method of the large-diameter RTP composite pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RTP pipe connection, in particular to a RTP composite pipe connecting sleeve processing equipment and a processing method. BACKGROUND

[0002] Reinforced thermoplastic (RTP) composite pipes generally comprise a three-layer structure: the inner layer is a polyethylene inner liner; the middle layer is a reinforced layer composed of fiber tape winding; and the outer layer is a polyethylene protective layer. The composite pipe combines the high strength of the fiber and the flexibility, corrosion resistance and other characteristics of the polyethylene, can withstand very high working pressure, and has good toughness and scratch resistance, and is therefore widely used in the oil and gas field.

[0003] At present, the most commonly used RTP composite pipe connection is a steel buckle pressure joint and an electric melting sleeve joint. These two joints have been successfully applied to small-diameter glass fiber tape reinforced polyethylene composite pipes. However, for RTP composite pipes, the steel buckle pressure joint is too heavy in quality, which can easily cause stress concentration at the joint, leading to brittle fracture of the joint; and the electric melting sleeve joint is prone to cause the outer PE layer to break and slip due to complete force conduction by the outer PE layer. Therefore, it is urgent to research a new connection method suitable for large-diameter RTP pipes. SUMMARY

[0004] The purpose of the present application is to provide a RTP composite pipe connecting sleeve processing equipment and a processing method, which can be used to produce a connecting sleeve suitable for connecting large-diameter RTP composite pipes, and can solve the problems existing in the prior art mentioned above.

[0005] According to an aspect of the present application, a RTP composite pipe connecting sleeve processing equipment is provided, the RTP composite pipe connecting sleeve being formed by roll pressing a composite reinforcing tape on a PE pipe substrate, and the processing equipment comprising:

[0006] a PE pipe substrate feeding assembly for conveying the PE pipe substrate to a roll pressing and composite operation position;

[0007] a reinforcing tape feeding assembly for flattening and conveying the reinforcing tape in a roll to the roll pressing and composite operation position;

[0008] a reinforcing tape preheating system for preheating the reinforcing tape being conveyed before it reaches the roll pressing and composite operation position; and

[0009] a roll pressing and composite system for continuously roll pressing and compositing the reinforcing tape and the PE pipe substrate located at the roll pressing and composite operation position to form the RTP composite pipe connecting sleeve.

[0010] According to one embodiment of the present application, the PE pipe base feeding assembly comprises:

[0011] a track arranged on the base;

[0012] a sliding mechanism in sliding cooperation with the track; and

[0013] a PE pipe base fixing mechanism arranged on the sliding mechanism, the PE pipe base fixing mechanism fixing the PE pipe base with its central axis perpendicular to the extension direction of the track.

[0014] According to one embodiment of the present application, the PE pipe base fixing mechanism is an air inflation shaft, the central axis of the air inflation shaft is perpendicular to the extension direction of the track, and the PE pipe base can be sleeved outside the air inflation shaft, the air inflation shaft tensioning the PE pipe base during transportation, and releasing the PE pipe base after being transported to the position.

[0015] According to one embodiment of the present application, the PE pipe base feeding assembly comprises a driving mechanism, the driving mechanism being used to push the PE pipe base along the axial direction of the PE pipe base to the roll pressing and compounding operation position after the air inflation shaft releases the PE pipe base.

[0016] According to one embodiment of the present application, the reinforcing tape feeding assembly comprises:

[0017] a rotatably supported upper roll, the upper roll being used to support the reinforcing tape in roll and drive it to rotate to release the reinforcing tape; and

[0018] a flattening assembly, the flattening assembly being arranged in spaced apart manner with the upper roll and being used to flatten the reinforcing tape released from the upper roll.

[0019] According to one embodiment of the present application, the flattening assembly comprises a plurality of flattening rollers arranged in parallel in sequence along the conveying direction of the reinforcing tape, the central axes of the flattening rollers are parallel to the central axis of the upper roll, and the plurality of flattening rollers are arranged in staggered manner in sequence in the direction perpendicular to the central axes of the flattening rollers and perpendicular to the conveying direction of the reinforcing tape.

[0020] According to one embodiment of the present application, the processing equipment comprises a tension control system, the tension control system being used to control the tension in the process of flattening and conveying the reinforcing tape,

[0021] the tension control system comprising:

[0022] a tension sensor, the tension controller being used to collect the tension data of the reinforcing tape at the flattening assembly;

[0023] A magnetic powder clutch connected with the upper winding roller for controlling the rotational resistance of the upper winding roller; and

[0024] A tension controller communicatively connected with the tension sensor and the magnetic powder clutch, the tension controller configured to receive tension data from the tension sensor, determine a control current provided to the magnetic powder clutch according to the received tension data, and transmit the determined control current signal to the magnetic powder clutch for controlling the rotational resistance of the upper winding roller.

[0025] According to an embodiment of the present application, the processing device comprises a deviation control system for controlling the deviation amount in the flattening and conveying of the reinforcing tape,

[0026] The deviation control system comprises:

[0027] A misalignment sensor for collecting misalignment deviation data of the reinforcing tape at the flattening assembly;

[0028] A linear driver connected with the upper winding roller for driving the upper winding roller to move in the axial direction; and

[0029] A deviation controller communicatively connected with the misalignment sensor and the linear driver, the deviation controller configured to receive misalignment deviation data from the misalignment sensor, and drive the linear driver according to the received misalignment deviation data to control the straightness of the upper winding roller.

[0030] According to an embodiment of the present application, the reinforcing tape preheating system comprises:

[0031] A tape heater suspended above the conveyed reinforcing tape for heating the passing reinforcing tape;

[0032] A tape temperature sensor for collecting temperature data of the reinforcing tape heating area; and

[0033] A temperature controller communicatively connected with the tape heater and the tape temperature sensor, the temperature controller configured to receive temperature data from the tape temperature sensor, and control the temperature of the tape heater according to the received temperature data.

[0034] According to an embodiment of the present application, the reinforcing tape preheating system comprises a support adjusting frame for supporting the tape heater and adjusting the height position of the tape heater.

[0035] According to an embodiment of the present application, the roll compounding system comprises:

[0036] an air inflation shaft, the PE pipe base is sleeved on the air inflation shaft after being conveyed to the roller compounding operation position and is tensioned by the air inflation shaft;

[0037] an air inflation shaft rotation driving mechanism for driving the air inflation shaft to rotate;

[0038] a rotatably supported compression roller, the compression roller is arranged close to and parallel to the PE pipe base, and is used for compressing and compounding the reinforcing tape to the PE pipe base;

[0039] a compression roller servo cylinder connected with the compression roller and used for controlling the rotation of the compression roller;

[0040] a compression roller elastic moving device connected with the compression roller, the compression roller elastic moving device is used for realizing the stable control of the compression roller and the PE pipe base;

[0041] a PE pipe base heating assembly, the PE pipe base heating assembly is used for heating the PE pipe base supported on the air inflation shaft.

[0042] According to one embodiment of the present application, the PE pipe base heating assembly comprises:

[0043] a pipe body heater, the pipe body heater is suspended above the PE pipe base for heating the PE pipe base;

[0044] a pipe body temperature sensor, the pipe body temperature sensor is used for collecting temperature data of the heating area of the PE pipe base; and

[0045] a temperature controller communicatively connected with the pipe body heater and the pipe body temperature sensor, the temperature controller is configured to receive the temperature data from the pipe body temperature sensor and to control the temperature of the pipe body heater according to the received temperature data.

[0046] According to one embodiment of the present application, the compression roller servo cylinder is connected with the compression roller at a central position along the longitudinal direction of the compression roller, for applying a force to the compression roller to push the compression roller to tightly contact the PE pipe base, and the compression roller elastic moving device comprises two spring devices symmetrically arranged at both ends of the compression roller along the longitudinal direction of the compression roller.

[0047] According to one embodiment of the present application, the PE pipe base heating assembly comprises a support adjusting frame for supporting the pipe body heater and adjusting the height position of the pipe body heater.

[0048] According to one embodiment of the present application, the compression roller is supported and fixed by a compression roller bearing seat, and the compression roller bearing seat is a self-aligning roller bearing.

[0049] According to a second aspect of the present application, there is provided a method for processing an RTP composite pipe joint sleeve, the method comprising:

[0050] feeding a PE pipe base to a roll-bonding operation station;

[0051] unwinding and feeding a reinforcing tape to the roll-bonding operation station;

[0052] preheating the reinforcing tape before it reaches the roll-bonding operation station; and

[0053] continuously roll-bonding the reinforcing tape and the PE pipe base at the roll-bonding operation station to form the RTP composite pipe joint sleeve.

[0054] According to an embodiment of the present application, the method for processing the RTP composite pipe joint sleeve comprises controlling the tension and straightness of the reinforcing tape during unwinding and feeding of the reinforcing tape.

[0055] According to an embodiment of the present application, the method for processing the RTP composite pipe joint sleeve comprises heating the PE pipe base at the roll-bonding operation station, and controlling the rotation of the PE pipe base and the pressure of the roll-bonding rolls during the continuous roll-bonding.

[0056] By adopting the above technical solutions, the present application has at least the following advantages:

[0057] The RTP composite pipe joint sleeve processing device and method provided by the present application continuously roll-bond the reinforcing tape and the PE pipe base to finally prepare the RTP composite pipe joint sleeve, innovates the large-diameter RTP composite pipe joint method, and changes the brittle fracture caused by stress concentration of the steel buckle pressure joint and the situation that the outer PE is easily broken and slipped off due to the electric melting sleeve joint.

[0058] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0059] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the specific embodiments below, serve to explain the present disclosure but do not constitute a limitation thereof. In the drawings:

[0060] Figure 1 is a perspective view of an RTP composite pipe joint sleeve processing device according to an embodiment of the present application;

[0061] Figure 2 is a front view of the RTP composite pipe joint sleeve processing device shown in Figure 1 ;

[0062] Figure 3 is Figure 1 is a side view of the RTP composite pipe connecting sleeve processing equipment shown in

[0063] Figure 4 is Figure 1 is a top view of the RTP composite pipe connecting sleeve processing equipment shown in

[0064] Figure 5 is a flow chart of the RTP composite pipe connecting sleeve processing method according to an embodiment of the present application.

[0065] Legend of Reference Signs

[0066] PE pipe base material loading assembly 100; reinforcing tape loading assembly 200; reinforcing tape preheating system 300; roll pressing composite system 400; base 500; track 110; sliding mechanism 120; PE pipe base material fixing mechanism 130; upper roll 210; flattening assembly 220; tape heater 310; tape temperature sensor 320; support frame 330; gas expansion shaft 410; pressing roll 420; pressing roll servo cylinder 430; pressing roll elastic moving device 440; rotating roll 450; rotating roll motor 460; pipe body heater 470; pipe body temperature sensor 472; gas expansion shaft support frame 480; support frame 490; tension sensor 610; magnetic powder clutch 620; misalignment sensor 710; linear drive 720. DETAILED DESCRIPTION

[0067] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing specific embodiments only and is not intended to be limiting of the present application. For example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, merely describe the orientation in the drawings in which the application is shown, and are not intended to be limiting as to the position of the application in use.

[0069] The terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of the drawings are intended to cover the non-exclusive inclusion; the terms "first", "second", and the like in the specification and claims of the present application or the above description of the drawings are used to distinguish different objects, and are not intended to describe a particular order. The meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0070] In this specification and in the claims that follow, when an element is referred to as being "on" or "connected to" or "mounted on" or "connected with" another element, it can be directly on, or connected or mounted on, or connected with the other element or intervening elements can be present. For example, when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements can be present.

[0071] Also, it is to be understood that the phraseology or terminology employed herein, and not otherwise expressly set forth in this specification, is for the purpose of description only and is not necessarily taken as limiting of the application. Any reference to an "embodiment" or "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are the various embodiments necessarily mutually exclusive of one another.

[0072] It should be noted that, for the convenience of description, three coordinate axes perpendicular to each other in space are defined as an X axis, a Y axis, and a Z axis, wherein the X axis and the Y axis are two coordinate axes perpendicular to each other in the same horizontal plane, and the Z axis is a coordinate axis in the vertical direction; the X axis, the Y axis, and the Z axis are located in space and are perpendicular to each other, and three planes formed thereby are an XY plane, a YZ plane, and an XZ plane, wherein the XY plane is a horizontal plane, the XZ plane and the YZ plane are both vertical planes, and the XZ plane is perpendicular to the YZ plane.

[0073] The first aspect of the application provides an RTP composite pipe connecting sleeve processing equipment. The RTP composite pipe connecting sleeve is formed by roll bonding one or more layers of reinforcing tapes on a PE pipe base. Figures 1 to 4 A schematic diagram of the RTP composite pipe connecting sleeve processing equipment provided according to one embodiment of the application is shown from various perspectives. As shown in the figure, the processing equipment includes a PE pipe base feeding assembly 100, a reinforcing tape feeding assembly 200, a reinforcing tape preheating system 300, and a roll bonding system 400. The PE pipe base feeding assembly 100 is used to transport the PE pipe base to a roll bonding operation position, the reinforcing tape feeding assembly 200 is used to flatten and transport the reinforcing tape in a roll to the roll bonding operation position, the reinforcing tape preheating system 300 is used to preheat the reinforcing tape being transported before it reaches the roll bonding operation position, and the roll bonding system 400 is used to continuously roll bond the reinforcing tape and the PE pipe base at the roll bonding operation position to form an RTP composite pipe connecting sleeve.

[0074] The processing equipment includes a base 500, and the PE pipe base feeding assembly 100, the reinforcing tape feeding assembly 200, the reinforcing tape preheating system 300, and the roll bonding system 400 are all arranged on the base 500.

[0075] The PE pipe base body loading assembly 100 comprises: a track 110 arranged on the base 500; a sliding mechanism 120 in sliding cooperation with the track 110; and a PE pipe base body fixing mechanism 130 arranged on the sliding mechanism 120. The PE pipe base body fixing mechanism 130 fixes the PE pipe base body so that the central axis thereof is perpendicular to the extension direction of the track 110. In the embodiment shown in the drawings, the central axis of the PE pipe base body is parallel to the Y-axis direction, and the extension direction of the track 110 is parallel to the X-axis direction. In some cases, the PE pipe base body fixing mechanism 130 can be arranged as an air inflation shaft releasably fixed on the sliding mechanism 120, the central axis of the air inflation shaft is perpendicular to the extension direction of the track 110, and the PE pipe base body can be sleeved outside the air inflation shaft. When being transported, the air inflation shaft tightens the PE pipe base body, and after being transported to the position along the track 110, the air inflation shaft releases the PE pipe base body. The air inflation shaft is used to fix the PE pipe base body, and only simple inflation and deflation operations are required to realize the fixing and releasing of the PE pipe base body, which is convenient, fast and efficient, and does not cause damage to the PE pipe base body. However, it can be understood that the PE pipe base body fixing mechanism 130 is not limited to the specific form of the air inflation shaft, and in other cases, other forms known in the art for fixing pipes can be used to fix the PE pipe base body. In Figure 1 , a state diagram after the PE pipe base body is transported to the position is shown. In Figure 2 and Figure 4 , the PE pipe base body is not shown.

[0076] The PE pipe base body loading assembly 100 can further comprise a driving mechanism for pushing the PE pipe base body to the roll pressing and compounding operation position in the axial direction of the PE pipe base body after the air inflation shaft releases the PE pipe base body. In some cases, the driving mechanism is a pipe body pulley block. However, it can be understood that the driving mechanism is not limited to the specific form of the pipe body pulley block, and in other cases, other forms known in the art can be used to push the PE pipe base body to the roll pressing and compounding operation position, for example, a retractable member arranged on the sliding mechanism 120 can be used, which can push the PE pipe base body to the roll pressing and compounding operation position in the axial direction of the PE pipe base body when it is extended.

[0077] The reinforcing tape feeding assembly 200 comprises an upper roll 210 and a flattening assembly 220. The upper roll 210 is rotatably supported on the base 500 for supporting a roll of reinforcing tape and driving rotation thereof to release the reinforcing tape. The flattening assembly 220 is disposed in spaced apart relation to the upper roll 210 for flattening the reinforcing tape released from the upper roll 210. In some cases, the flattening assembly 220 comprises a plurality of flattening rollers arranged in parallel in sequence along the conveying direction of the reinforcing tape, the central axes of the flattening rollers are parallel to the central axis of the upper roll 210, and the plurality of flattening rollers are arranged in sequence in staggered relation in a direction perpendicular to the central axes of the flattening rollers and perpendicular to the conveying direction of the reinforcing tape. As used herein, the term "staggered relation" means that the plurality of flattening rollers are arranged in a high-low-high-low pattern in a direction (i.e. the Z direction shown in the figure) perpendicular to the central axes of the flattening rollers and perpendicular to the conveying direction of the reinforcing tape. In this way, the reinforcing tape passing through the flattening assembly contacts the contact surfaces of the odd-numbered flattening rollers, which are opposite to the contact surfaces of the even-numbered flattening rollers, for example, the reinforcing tape passing through the flattening assembly contacts the lower surfaces of the odd-numbered flattening rollers and the upper surfaces of the even-numbered flattening rollers, and thus the plurality of flattening rollers apply alternating forces to the reinforcing tape passing therethrough to achieve the flattening purpose. Although a specific form of the flattening assembly is described above, it should be understood that the flattening assembly of the present application is not limited to the specific form described above, and components known in the art capable of achieving the flattening purpose can be applied to the present application.

[0078] In the embodiment shown in the drawings, the flattening assembly 220 comprises three flattening rollers, the flattening roller in the middle is higher than the flattening rollers on both sides. As shown, Figure 1 the reinforcing tape released from the upper roll 210 first passes through the flattening roller on the rightmost side, which can apply a downward force to the reinforcing tape; then the reinforcing tape passes through the flattening roller in the middle, which can apply an upward force to the reinforcing tape; then the reinforcing tape passes through the flattening roller on the leftmost side, which can again apply a downward force to the reinforcing tape, thereby applying alternating forces to the reinforcing tape by the three flattening rollers to achieve the flattening of the reinforcing tape.

[0079] The reinforcing tape preheating system 300 is disposed downstream of the reinforcing tape feeding assembly 200 (more specifically, the flattening assembly 220) and upstream of the roll compounding system 400 along the conveying direction of the reinforcing tape. The reinforcing tape preheating system 300 includes a tape heater 310, a tape temperature sensor 320, and a temperature controller communicatively connected with the tape heater 310 and the tape temperature sensor 320. The tape heater 310 is suspended above the reinforcing tape in conveying for heating the passing reinforcing tape. The tape temperature sensor 320 is disposed in the reinforcing tape heating area for collecting temperature data of the reinforcing tape heating area. The temperature controller is configured to receive the temperature data from the tape temperature sensor 320 and to control the temperature of the tape heater 310 according to the received temperature data. In some cases, the tape heater 310 can take the form of an infrared baking lamp. In some cases, the tape heater 310 can be disposed in a flat panel structure that fits the shape of the tape, which helps to increase the heating area and improve the heating efficiency of the tape. It can be understood that the temperature controller can be either a separately disposed component or an integrated component integrated with other components of the processing apparatus. The tape heater 310 can be fixed on the base 500 by a support frame 330. In some cases, the support frame 330 can be an adjustable support frame, whereby the height of the tape heater 310 can be adjusted to facilitate the adjustment of the heating efficiency of the tape heater. The adjustable height support frame can take a structure known in the art, and the present application does not limit the specific structure thereof.

[0080] The roll compounding system 400 comprises an air expanding shaft 410, an air expanding shaft rotation driving mechanism, a pressure roller 420, a pressure roller servo cylinder 430 and a pressure roller elastic moving device 440. The PE pipe base is sleeved on the air expanding shaft 410 and is tensioned by the air expanding shaft 410 after being conveyed to the roll compounding operation position. The air expanding shaft 410 is rotatably supported by an air expanding shaft support frame 480. The air expanding shaft rotation driving mechanism is used to drive the air expanding shaft to rotate to realize continuous roll compounding. The pressure roller 420 is arranged close to and parallel to the PE pipe base at the roll compounding operation position and is used to press and compound the reinforcing tape to the PE pipe base. The pressure roller servo cylinder 430 is connected with the pressure roller 420 and is used to control the rotation of the pressure roller 420. In a specific embodiment, the pressure roller servo cylinder 430 is connected with the pressure roller 420 at the center position along the longitudinal direction of the pressure roller and is used to push the pressure roller to closely adhere to the PE pipe base. For this purpose, the pressure roller servo cylinder 430 applies a force to the pressure roller which is perpendicular to the longitudinal direction of the pressure roller and is perpendicular to the outer surface of the PE pipe base to control the rotation of the pressure roller 420. The pressure roller elastic moving device 440 is connected with the pressure roller 420 and is used to realize the ballast stability control between the pressure roller and the PE pipe base. In a specific embodiment, the pressure roller elastic moving device 440 comprises two spring devices which are symmetrically arranged relative to the pressure roller servo cylinder 430 at both ends of the pressure roller. The center axes of the two spring devices are parallel to the output shaft of the pressure roller servo cylinder 430. One end of each of the two spring devices is connected to the pressure roller and the opposite end is fixed to the base through a support. Thus, when the pressure roller servo cylinder 430 pushes the pressure roller in the middle of the pressure roller, the spring devices arranged at both sides of the pressure roller balance the offset amount at both sides of the pressure roller, balance the pressure roller 420 and ensure that the pressure roller 420 closely adheres to the PE pipe base. The pressure roller 420 is rotatably supported on the base 500 through a pressure roller bearing seat 422. In some cases, the pressure roller bearing seat 422 can be a self-aligning roller bearing which can realize an axis deflection of 3° and can make the pressure roller closely adhere to the PE pipe body and be uniformly stressed (specifically, can be used to compensate the coaxiality error caused by the non-circularity of the outer surface of the PE pipe). In addition, the self-aligning roller bearing and the pressure roller elastic moving device 440 mentioned above both adopt the structure commonly used in the prior art and will not be described in detail here.

[0081] In the embodiment shown in the drawings, the air expanding shaft rotation driving mechanism can comprise a rotation roller 450 which is sleeved on the air expanding shaft 410 and can drive the air expanding shaft 410 to rotate and a rotation roller motor 460 which is used to drive the rotation roller 421 to rotate. As shown in the drawings, the rotation roller 450 is arranged on the air expanding shaft 410 and is sleeved on the air expanding shaft 410. The rotation roller motor 460 is arranged on the air expanding shaft support frame 480 and is used to drive the rotation roller 450 to rotate. The rotation roller 450 is rotatably supported by the air expanding shaft 410. The rotation roller motor 460 is connected with the rotation roller 450 and is used to drive the rotation roller 450 to rotate to realize continuous roll compounding. Figure 1As shown, the output shaft of the rotating roller motor 460 is connected to the rotating roller 450 through a belt, thereby driving the rotating roller 450 to rotate. The rotating roller 450 rotates in turn to drive the air inflation shaft 410 to rotate. The rotating roller motor 460 can control the rotating speed of the rotating roller. Although one specific form of the air inflation shaft rotating driving mechanism is described above, it should be understood that the air inflation shaft rotating driving mechanism of the present application is not limited to the specific form described above, and any component known in the art capable of driving the air inflation shaft to rotate can be applied to the present application.

[0082] The roll lamination system 400 further comprises a PE pipe substrate heating assembly for heating the PE pipe substrate supported on the air inflation shaft. The PE pipe substrate heating assembly comprises a pipe body heater 470, a pipe body temperature sensor 472, and a temperature controller communicatively connected with the pipe body heater 470 and the pipe body temperature sensor 472. The pipe body heater 470 is suspended above the PE pipe substrate at the roll lamination operation position for heating the PE pipe substrate. The pipe body temperature sensor 472 is arranged at the PE pipe substrate heating area for collecting temperature data of the PE pipe substrate heating area. The temperature controller is configured to receive the temperature data from the pipe body temperature sensor 472 and to control the temperature of the pipe body heater 470 according to the received temperature data. In some cases, the pipe body heater 470 can take the form of an infrared baking lamp. In some cases, the pipe body heater 470 can be arranged in an arc-shaped structure following the arc of the arc-shaped side surface of the PE pipe substrate, which helps to increase the heating area and improve the heating efficiency. It can be understood that the temperature controller can be a separately arranged component or an integrated component integrated with other components of the processing equipment. The pipe body heater 470 can be fixed on the base 500 through a support frame 490. In some cases, the support frame 490 can be an adjustable support frame, thereby the height of the pipe body heater 470 can be adjusted to facilitate the adjustment of the heating efficiency of the pipe body heater 470. The adjustable height support frame can take a structure known in the art, and the present application does not limit the specific structure thereof.

[0083] The processing apparatus can further include a tension control system for controlling the tension of the reinforcing tape during the flattening and conveying process. The tension control system includes a tension sensor 610, a magnetic powder clutch 620, and a tension controller communicatively connected with the tension sensor 610 and the magnetic powder clutch 620. The tension sensor 610 can be disposed at the flattening assembly 220 for collecting the tension of the reinforcing tape at the flattening assembly. In the embodiment shown in the drawings, the tension sensor 610 is disposed at the flattening roller in the middle. The magnetic powder clutch 620 is connected with the upper winding roller 210 and is used to control the rotational resistance of the upper winding roller 210. The tension controller is configured to receive the tension data from the tension sensor, determine the control current provided to the magnetic powder clutch according to the received tension data, and transmit the determined control current signal to the magnetic powder clutch 620 so as to control the rotational resistance of the upper winding roller 210. The tension sensor 610 and the magnetic powder clutch 620 are both components commonly used in the art. It can be understood that, like the temperature controller mentioned above, the tension controller can be either a separately disposed component or an integrated component integrated with other components of the processing apparatus.

[0084] The processing apparatus can further include a deviation control system for controlling the deviation of the reinforcing tape during the flattening and conveying process. The deviation control system includes a misalignment sensor 710, a linear actuator 720, and a deviation controller communicatively connected with the misalignment sensor 710 and the linear actuator 720. The misalignment sensor 710 is disposed at the flattening roller for collecting the misalignment deviation of the reinforcing tape at the flattening assembly. The term "misalignment deviation" used herein refers to the deviation of the tape from the winding reference line during the winding process. The linear actuator 720 is connected with the upper winding roller 210 and is used to drive the upper winding roller to move in the axial direction. The deviation controller is configured to receive the misalignment deviation data from the misalignment sensor 710 and drive the linear actuator 720 according to the received misalignment deviation data to control the straightness of the upper winding roller 210. The misalignment sensor 710 and the linear actuator 720 are both components commonly used in the art. It can be understood that, like the temperature controller, the tension controller, etc. mentioned above, the deviation controller can be either a separately disposed component or an integrated component integrated with other components of the processing apparatus.

[0085] The RTP composite pipe connecting sleeve processing equipment provided by the present application can realize continuous roll compounding of the reinforcing tape and the PE pipe base body, thereby forming the RTP composite pipe connecting sleeve. The RTP composite pipe connecting sleeve processing equipment provided by the present application has simple overall structure, reasonable layout and convenient operation, and is conducive to mass production of the RTP composite pipe connecting sleeve. The RTP composite pipe connecting sleeve processing equipment provided by the present application can realize preparation of connecting sleeves with different reinforcing layers (for example, the number of winding layers is less than or equal to 40). By arranging the tension control system and the deviation correction control system, the RTP composite pipe connecting sleeve processing equipment provided by the present application realizes tension control and deviation displacement control during the flattening process of the reinforcing tape, which is conducive to improving the bonding quality of the reinforcing tape and the PE pipe base body.

[0086] The second aspect of the present application provides a RTP composite pipe connecting sleeve processing method. As shown in the figure, the method comprises the following steps: S100, conveying the PE pipe base body to the roll compounding operation position; S200, flattening and conveying the reinforcing tape in roll to the roll compounding operation position; S300, preheating the conveyed reinforcing tape before it reaches the roll compounding operation position; and S400, continuously roll compounding the reinforcing tape and the PE pipe base body located at the roll compounding operation position to form the RTP composite pipe connecting sleeve. Figure 5

[0087] In one embodiment, the infrared baking lamp is used to preheat the conveyed reinforcing tape. In a preferred embodiment, the preheating temperature of the reinforcing tape is controlled at 90-120°C.

[0088] The continuous roll compounding of the reinforcing tape and the PE pipe base body located at the roll compounding operation position comprises: controlling the rotation of the PE pipe base body and the pressure of the pressure roller, and under the condition of continuously conveying the reinforcing tape, roll compounding the reinforcing tape to the PE pipe base body by the pressure roller. In a preferred embodiment, the rotation speed of the PE pipe base body is controlled at 60 cm / min, and the pressure of the pressure roller is controlled at 30-60 Kg.

[0089] ​The processing method further comprises: controlling the tension of the reinforcing tape during the flattening and conveying of the reinforcing tape. Firstly, the tension data of the reinforcing tape is collected by a tension sensor; then, the rotation resistance of the reinforcing tape during release (or unwinding) is controlled according to the received tension data, so as to realize the control of the tension. Specifically, when the tension data indicates that the tension is too large, the rotation resistance is increased to reduce the tension of the reinforcing tape; when the tension data indicates that the tension is too small, the rotation resistance is reduced to increase the tension of the reinforcing tape. The increase or decrease of the rotation resistance can be realized by changing the control current provided to the magnetic powder clutch connected to the upper winding roller for supporting the reinforcing tape, and the greater the control current provided, the smaller the rotation resistance of the upper winding roller, and vice versa. In a preferred embodiment, the technical parameter of the tension sensor can be 0-100 kg. The technical parameter of the magnetic powder clutch can be 50 NM at most. The tension of the reinforcing tape can be controlled at 25-40 kg.

[0090] The processing method further comprises: controlling the straightness of the reinforcing tape during the flattening and conveying of the reinforcing tape. Firstly, the offset data of the reinforcing tape is collected by a misalignment sensor; then, the straightness of the reinforcing tape is controlled according to the received offset data. Specifically, when the offset data indicates that the offset of the reinforcing tape is too large, the upper winding roller is driven to move in the axial direction by a linear drive to reduce the offset and ensure the straightness of the reinforcing tape. In a preferred embodiment, the technical parameter of the misalignment sensor can be an accuracy of ±0.2, and the technical parameter of the linear drive can be an accuracy of ±0.2 and a load of 200 kg. In a preferred embodiment, the control offset is not more than 15 mm.

[0091] The processing method further comprises: heating the PE pipe substrate located at the roll-to-roll compounding operation position. In a preferred embodiment, the PE pipe substrate located at the roll-to-roll compounding operation position can be heated by an infrared baking lamp. In a preferred embodiment, the heating temperature of the PE substrate can be 220-230 °C.

[0092] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0093] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0094] Furthermore, the various embodiments of the present disclosure can be arbitrarily combined with each other unless they contradict each other, and it should be understood that the same should be construed as being included in the disclosure of the present disclosure.

Claims

1. A processing equipment for RTP composite pipe connecting sleeves, wherein the RTP composite pipe connecting sleeve is formed by roll-pressing reinforcing strips onto a PE pipe substrate, characterized in that, The processing equipment includes: A PE pipe substrate feeding assembly, wherein the PE pipe substrate feeding assembly is used to convey the PE pipe substrate to the roll forming composite operation position, the PE pipe substrate feeding assembly includes; The track is set on the base; A sliding mechanism that slides in conjunction with the track; A PE pipe base fixing mechanism is provided on the sliding mechanism. This mechanism fixes the PE pipe base so that its central axis is perpendicular to the extension direction of the track. The PE pipe base fixing mechanism is an air expansion shaft, the central axis of which is perpendicular to the extension direction of the track. The PE pipe base can be sleeved on the outside of the air expansion shaft. During transport, the air expansion shaft tensions the PE pipe base; after transport to the desired position, the air expansion shaft releases the PE pipe base. A drive mechanism is used to push the PE pipe substrate to the roll forming operation position along the axial direction of the PE pipe substrate after the air shaft releases the PE pipe substrate. A reinforcing strip feeding assembly is used to flatten the coiled reinforcing strip and convey it along the conveying direction to the roll forming operation position; A reinforcing strip preheating system is used to preheat the conveyed reinforcing strip before it reaches the roll forming operation position; and A roll forming system is used to continuously roll form the reinforcing strip and the PE pipe matrix at the roll forming operation position to form the RTP composite pipe connecting sleeve. The reinforcing strip feeding assembly, the reinforcing strip preheating system, and the roll forming composite system are arranged sequentially along the conveying direction, which is parallel to the extension direction of the track.

2. The RTP composite pipe connecting sleeve processing equipment according to claim 1, characterized in that, The reinforcing strip feeding assembly includes: A rotatably supported upper winding roll, the upper winding roll being used to support the wound reinforcing strip and drive it to rotate in order to release the reinforcing strip; and A flattening assembly, spaced apart from the upper winding roll, is used to flatten the reinforcing strip released from the upper winding roll.

3. The RTP composite pipe connecting sleeve processing equipment according to claim 2, characterized in that, The flattening assembly includes multiple flattening rollers arranged in parallel along the conveying direction of the reinforcing strip. The central axis of the flattening rollers is parallel to the central axis of the upper winding roller. The multiple flattening rollers are arranged alternately in a direction perpendicular to the central axis of the flattening rollers and perpendicular to the conveying direction of the reinforcing strip.

4. The RTP composite pipe connecting sleeve processing equipment according to claim 2, characterized in that, The processing equipment includes a tension control system, which is used to control the tension of the reinforcing strip during flattening and conveying. The tension control system includes: A tension sensor and a tension controller are used to collect tension data of the reinforcing strip at the flattening assembly; A magnetic powder clutch, connected to the upper winding roller, is used to control the rotational resistance of the upper winding roller; and A tension controller communicatively connected to the tension sensor and the magnetic powder clutch is configured to: receive tension data from the tension sensor, determine a control current to be supplied to the magnetic powder clutch based on the received tension data, and transmit the determined control current signal to the magnetic powder clutch to control the rotational resistance of the upper roller.

5. The RTP composite pipe connecting sleeve processing equipment according to claim 2, characterized in that, The processing equipment includes a deviation correction control system, which is used to control the offset of the reinforcing strip during flattening and conveying. The correction control system includes: A misalignment sensor is used to collect data on the misalignment offset of the reinforcing strip at the flattening assembly. A linear actuator, connected to the upper winding roller, for driving the upper winding roller to move in the axial direction; and A web guiding controller communicatively connected to the misalignment sensor and the linear actuator is configured to receive misalignment offset data from the misalignment sensor and drive the linear actuator based on the received misalignment offset data to control the straightness of the upper roll.

6. The RTP composite pipe connecting sleeve processing equipment according to claim 1, characterized in that, The reinforced strip preheating system includes: A strip heater, which is suspended above the conveyed reinforcing strip, is used to heat the passing reinforcing strip; A strip temperature sensor, used to collect temperature data of the heated area of ​​the reinforcing strip; and A temperature controller is communicatively connected to the strip heater and the strip temperature sensor, the temperature controller being configured to receive temperature data from the strip temperature sensor and to control the temperature of the strip heater based on the received temperature data.

7. The RTP composite pipe connecting sleeve processing equipment according to claim 6, characterized in that, The reinforced strip preheating system includes a support adjustment frame for supporting the strip heater and for adjusting the height of the strip heater.

8. The RTP composite pipe connecting sleeve processing equipment according to claim 1, characterized in that, The roll forming composite system includes: An air-expanding shaft is used to tension the PE pipe substrate after it is conveyed to the roller pressing and composite operation position. An air shaft rotation drive mechanism for driving the air shaft to rotate; A rotatably supported pressure roller is arranged close to and parallel to the PE pipe matrix, the pressure roller being used to press and bond reinforcing strip onto the PE pipe matrix; A pressure roller servo electric cylinder connected to the pressure roller and used to control the rotation of the pressure roller; A pressure roller elastic movement device connected to the pressure roller, the pressure roller elastic movement device being used to achieve stable control of the ballast between the pressure roller and the PE pipe substrate; and A PE pipe base heating assembly is used to heat the PE pipe base supported on the air expansion shaft.

9. The RTP composite pipe connecting sleeve processing equipment according to claim 8, characterized in that, The PE pipe base heating assembly includes: A pipe heater, which is suspended above the PE pipe substrate for heating the PE pipe substrate; Pipe body temperature sensor, used to collect temperature data of the heating zone of the PE pipe substrate; and A temperature controller is communicatively connected to the tube heater and the tube temperature sensor, the temperature controller being configured to receive temperature data from the tube temperature sensor and to control the temperature of the tube heater based on the received temperature data.

10. The RTP composite pipe connecting sleeve processing equipment according to claim 8, characterized in that, The pressure roller servo electric cylinder is connected to the pressure roller at the center position along the longitudinal direction of the pressure roller, and is used to apply a force to the pressure roller to push the pressure roller to fit tightly against the PE pipe substrate. The pressure roller elastic movement device includes two spring devices symmetrically arranged at both ends of the pressure roller along the longitudinal direction of the pressure roller.

11. The RTP composite pipe connecting sleeve processing equipment according to claim 8, characterized in that, The pressure roller is supported and fixed by a pressure roller bearing seat, which is a self-aligning roller bearing.

12. A method for processing an RTP composite pipe connecting sleeve, characterized in that, Performed using the RTP composite pipe connecting sleeve processing equipment according to any one of claims 1-11, comprising: The PE pipe substrate is transported to the roll forming and composite operation position; The rolled reinforcing strip is flattened and conveyed to the roll forming and compounding operation station; The reinforcing strip is preheated before it reaches the roll forming operation position; and The reinforcing strip located at the roll forming operation position is continuously roll-formed with the PE pipe matrix to form the RTP composite pipe connecting sleeve.

13. The method for processing the RTP composite pipe connecting sleeve according to claim 12, characterized in that, The RTP composite pipe connecting sleeve processing method includes: controlling the tension and straightness of the reinforcing strip during the flattening and conveying process.

14. The method for processing the RTP composite pipe connecting sleeve according to claim 12, characterized in that, The RTP composite pipe connecting sleeve processing method includes: heating the PE pipe substrate located at the roller pressing operation position, controlling the rotation of the PE pipe substrate and controlling the pressure of the pressure roller performing the roller pressing operation during continuous roller pressing.

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