Wear-resistant flanging connector device for butt joint of pipe orifices of composite pipes

Abstract

The wear-resistant flanging connector device comprises a first sleeve and a second sleeve, the first sleeve and the second sleeve are fixed to the ends of the two composite pipes needing to be in butt joint in a matched mode respectively, a gasket is arranged between the ends of the butt joint ends of the two composite pipes, and the first sleeve and the second sleeve are fixedly connected into a whole through a locking and fixing device. The first sleeve and the second sleeve are fixed to the two composite pipes respectively, the two composite pipes and the gasket arranged between the composite pipes are fixedly connected through the locking and fixing device connected with the first sleeve and the second sleeve, and the defects that a traditional connecting structure is complex in structure, high in cost and poor in sealing performance are overcome. The connection is more convenient and faster, the sealing effect is good, the cost is low, the compression strength is high, and the connector can be buried and laid and has wider applicability compared with a flanging flange connector.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline materials, and particularly relates to a wear-resistant flanging joint device for butt joint of composite pipe orifices. Background Technique

[0002] With the rapid development of industrial technology, pipeline systems are increasingly widely used in various industrial fields. Especially in industries such as petroleum, chemical industry, mining, and hot springs, the requirements for pipeline connection equipment are getting higher and higher. Especially in the mining industry, great attention is paid to the wear resistance of joint connections. In particular, at present, pipelines with excellent wear resistance have been put into use. In contrast, the joint connections with poor wear resistance have become the weak points in wear-resistant pipelines.

[0003] The use of traditional joints in wear-resistant working conditions has quite large limitations. Since traditional joints are not specifically designed for wear-resistant working conditions, their structural characteristics cannot well meet the requirements for transporting wear-resistant media. For the working condition of transporting wear-resistant media, the joints also need to have wear resistance. In response to this, although there is already a structure on the market that uses a flanged flange connection after flanging the wear-resistant layer, in addition to ensuring the wear resistance of the joint connection, it also realizes a full bore for medium transportation. The main connection form of this flanged flange is mainly connected by flange bolts. Although it can meet the wear resistance requirements, it also has a series of defects of flange connection, such as being unable to be buried for laying, relatively complex installation, high cost, and the sealing performance cannot be guaranteed. In response to this, it is necessary to develop a wear-resistant flanging joint to solve the above problems. Summary of the Utility Model

[0004] The technical problem solved by the utility model: Provide a wear-resistant flanging joint device for butt joint of composite pipe orifices. By respectively fixing sleeve one and sleeve two on two composite pipes, and using a locking and fixing device connected to sleeve one and sleeve two to fixedly connect the two composite pipes and the gasket arranged between the composite pipes, the defects of complex connection structure, high cost and poor sealing performance of the traditional connection structure are solved. The connection is more convenient and fast, the sealing effect is good, the cost is low, the pressure resistance strength is high, and it can be used for buried laying, and has a wider applicability compared with the flanged flange joint.

[0005] The technical solution adopted by the utility model: A wear-resistant flanging joint device for butt joint of composite pipe orifices, including sleeve one and sleeve two. The sleeve one and sleeve two are respectively adaptively fixed to the ends of two composite pipes to be butted, and a gasket is arranged between the ends of the butting ends of the two composite pipes. The ends of the sleeve one and sleeve two are adapted and fixedly connected into one body through a locking and fixing device to realize the butt joint and fixation of the two composite pipes.

[0006] Preferably, the first sleeve is a socket end sleeve fixed to the composite pipe by crimping, and the second sleeve is a threaded end sleeve. An outer positioning ring is formed on the outer cylindrical wall of the first sleeve facing the second sleeve, and the end of the first sleeve abuts against the flanging end face of the end of the composite pipe fixed thereto; the second sleeve includes a crimping section for crimping and fixing to the composite pipe and a connecting section with an outer cylindrical diameter the same as the outer diameter of the outer positioning ring. A ring groove is formed on the inner hole wall of the second sleeve at the position of the port of the connecting section. The ring groove of the second sleeve is inserted into the end of the first sleeve, and the end of the connecting section of the second sleeve abuts against the outer end face of the outer positioning ring. The stepped surface at the position of the ring groove of the inner hole of the second sleeve abuts against the flanging end face of the end of the composite sleeve fixed thereto, and the flangings of the two composite pipes and the gasket are all located inside the ring groove of the second sleeve.

[0007] Further, the locking and fixing device adopts a locking nut. An inner positioning ring is provided at the end of the inner threaded hole of the locking nut facing the first sleeve. An external thread is formed on the outer wall of the connecting section of the second sleeve. The locking nut is sleeved on the first sleeve, and the inner threaded hole of the locking nut is in fit connection with the external thread. The inner positioning ring is rotated to make the inner side end face contact and position with the ring face at the corresponding end of the outer positioning ring.

[0008] Preferably, the first sleeve and the second sleeve have the same structure. The first sleeve and the second sleeve both include a connecting section with an annular clamping groove formed on the outer circumferential wall and a crimping section for crimping and fixing to the composite pipe. Ring grooves are formed at the ends of the inner holes of the connecting sections of the first sleeve and the second sleeve, and the flangings at the ends of the composite pipes and the gasket are all located in the ring groove after the butt joint of the first sleeve and the second sleeve.

[0009] Preferably, the first sleeve adopts a socket type first sleeve, and the second sleeve adopts a socket type second sleeve. The first sleeve and the second sleeve both include a connecting section with an annular clamping groove formed on the outer circumferential wall and a crimping section for crimping and fixing to the composite pipe. The crimping sections of the first sleeve and the second sleeve are respectively fixed to the two composite pipes. The flangings at the ends of the two composite pipes and the gasket between the flangings are all located in the ring groove at the end of the connecting section of the first sleeve. The end of the connecting section of the second sleeve is inserted into the ring groove at the end of the connecting section of the first sleeve and abuts against the flanging of the composite pipe fixed thereto, and the end of the connecting section of the first sleeve abuts against the stepped surface at the left end of the connecting section of the second sleeve.

[0010] Further, the locking and fixing device is a clamp. The convex rings at both ends of the inner hole of the clamp are respectively adapted to the annular clamping grooves of the first sleeve and the second sleeve, and the two-piece clamp is fixedly connected into one body by bolts.

[0011] Further, the gasket adopts a sealing gasket with a V-shaped ring groove processed on the outer circumferential wall.

[0012] Advantages of the present utility model compared with the prior art:

[0013] 1. This technical solution fixes sleeve one and sleeve two on two composite pipes respectively, and uses a locking and fixing device connected to sleeve one and sleeve two to fixedly connect the two composite pipes and the gasket provided between the composite pipes, solving the defects of complex connection structure, high cost and poor sealing performance of the traditional connection structure;

[0014] 2. This technical solution designs the joint structure according to the specification model and pressure grade, and can be applied to the field of high-pressure medium transportation, enabling this structure to operate continuously under a maximum pressure of 32 MPa;

[0015] 3. This technical solution uses the co-extrusion process to dock and install sleeve one and sleeve two with the flanges of the two composite pipes respectively, and then uses a high-quality rubber gasket with a larger width for sealing. The larger contact area and the installation of lock nuts or clamp fasteners make the sealing performance of this structure very superior, avoiding the occurrence of leakage caused by poor sealing performance;

[0016] 4. This technical solution is more convenient and fast to connect, has good sealing effect, low cost and high pressure resistance, and can be used for buried laying, and has a wider applicability compared with the flanged joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the first embodiment of the present utility model;

[0018] Figure 2 is a three-dimensional structural diagram of the first embodiment of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the second embodiment of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the third embodiment of the present utility model;

[0021] Figure 5 is a three-dimensional structural diagram of the clamp structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will combine with the Figures 1-5 in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0023] It should be noted that in this text, unless otherwise stated, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In this text, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0025] A wear-resistant flanging joint device for butt-jointing the pipe orifices of composite pipes, comprising a first sleeve 1 and a second sleeve 4. The first sleeve 1 and the second sleeve 4 are respectively and adaptively fixed to the ends of two composite pipes 5 to be butted. A gasket 3 is provided between the ends of the butting ends of the two composite pipes 5. The ends of the first sleeve 1 and the second sleeve 4 are adapted and fixedly connected into one body through a locking and fixing device 2, so as to realize the butt-joint and fixation of the two composite pipes 5. In the above structure, by respectively fixing the first sleeve 1 and the second sleeve 4 on the two composite pipes 5 and using the locking and fixing device 2 connected to the first sleeve 1 and the second sleeve 4 to fixedly connect the two composite pipes 5 and the gasket 3 provided between the composite pipes 5, the defects of the traditional connection structure, such as complex connection structure, high cost and poor sealing performance, are solved. By designing the joint structure according to the specification model and pressure grade, it can be applied to the field of high-pressure medium transportation, so that this structure can meet the long-term operation under the pressure of up to 32 MPa at most.

[0026] Embodiment 1

[0027] As Figures 1-2As shown in the figure, the specific structure of the threaded wear-resistant flanged joint is as follows: The first sleeve 1 is a socket end sleeve clamped and fixed on the composite pipe 5, and the second sleeve 4 is a threaded end sleeve. An outer positioning ring 6 is formed on the outer cylindrical wall of the first sleeve 1 facing the second sleeve 4, and the end of the first sleeve 1 abuts against the flanged end face of the end of the composite pipe 5 fixed thereto. The second sleeve 4 includes a clamping section for clamping and connecting with the composite pipe 5 and a connecting section with an outer diameter of the outer cylindrical wall the same as that of the outer positioning ring 6. A ring groove is formed on the inner hole wall of the second sleeve 4 at the position of the connecting section port. The ring groove of the second sleeve 4 is inserted into the end of the first sleeve 1, and the end of the connecting section of the second sleeve 4 abuts against the outer end face of the outer positioning ring 6. The stepped surface at the position of the inner hole ring groove of the second sleeve 4 abuts against the flanged end face of the end of the composite sleeve 5 fixed thereto, and the flanges of the two composite pipes 5 and the gasket 3 are all located inside the ring groove of the second sleeve 4. Specifically, the locking and fixing device 2 uses a lock nut. An inner positioning ring 7 is provided in the inner threaded hole of the lock nut facing the end of the first sleeve 1. An external thread 8 is formed on the outer wall of the connecting section of the second sleeve 4. The lock nut is sleeved on the first sleeve 1, and the inner threaded hole of the lock nut is adaptively connected with the external thread 8, and the inner positioning ring 7 is rotated to make the inner side end face contact and position with the ring face of the corresponding end of the outer positioning ring 6.

[0028] When the threaded wear-resistant joint is installed on the composite pipe 5, it only needs to use a clamping device to clamp the socket end sleeve and the threaded end sleeve to the two composite pipes 5 respectively. When connecting the joints, it is necessary to first use a flanging device to perform a flanging operation on the composite pipe 5, then align the two ends of the joint, install the sealing gasket, and tighten the nut to complete the installation.

[0029] The clamping type wear-resistant joints are also divided into two types according to different sealing forms. One is the flat end sealing type, and the other is the socket sealing type. The specific details are as follows:

[0030] Embodiment 2

[0031] As Figure 3 、 5 shown, the structure of the clamping type flat end sealing type is as follows: The first sleeve 1 and the second sleeve 4 have the same structure. The first sleeve 1 and the second sleeve 4 both include a connecting section with an annular clamping groove 9 formed on the outer circumferential wall and a clamping section for clamping and connecting with the composite pipe 5. Ring grooves are formed at the inner hole ends of the connecting sections of the first sleeve 1 and the second sleeve 4, and the flanges of the ends of the composite pipe 5 and the gasket 3 are all located in the ring groove after the first sleeve 1 and the second sleeve 4 are butted. Specifically, the locking and fixing device 2 is a clamp. The convex rings at both ends of the inner hole of the clamp are respectively adapted to the annular clamping grooves 9 of the first sleeve 1 and the second sleeve 4, and the two-piece clamp is fixedly connected into one body by bolts. Specifically, the gasket 3 uses a sealing gasket.

[0032] When the flat-end sealed joint structure is installed with the composite pipe 5, first use a swaging device to install the sleeve one 1 and the sleeve two 4 onto the two composite pipes 5 respectively, and then perform a flanging treatment on the composite pipe 5. During on-site installation, only the sleeve one 1 and the sleeve two 4 need to be aligned, place the sealing gasket, and then install the clamp and tighten the bolts to complete the installation.

[0033] Embodiment 3

[0034] As Figure 4 、 5 shown, the socket and spigot sealed joint structure using a clamp is as follows: the sleeve one 1 is a socket-type sleeve one, the sleeve two 4 is a socket-type sleeve two. Both the sleeve one 1 and the sleeve two 4 include a connecting section with an annular slot 9 formed on the outer circumferential wall and a swaging section for swaging and fixedly connecting with the composite pipe 5. The swaging sections of the sleeve one 1 and the sleeve two 4 are respectively fixed on the two composite pipes 5, and the flanges at the ends of the two composite pipes 5 and the gasket between the flanges are located in the annular groove at the end of the connecting section of the sleeve one 1. The end of the connecting section of the sleeve two 4 is inserted into the annular groove at the end of the connecting section of the sleeve one 1 and abuts against the flange of the composite pipe 5 fixed thereto, and the end of the connecting section of the sleeve one 1 abuts against the stepped surface at the left end of the connecting section of the sleeve two 4; specifically, the locking and fixing device 2 is a clamp, the convex rings at both ends of the inner hole of the clamp are respectively adapted to the annular slots 9 of the sleeve one 1 and the sleeve two 4, and the two-piece clamp is fixedly connected into one body by bolts; specifically, the gasket 3 is a sealing gasket with a V-shaped annular groove machined on the outer circumferential wall.

[0035] When the socket and spigot sealed joint structure is installed, first use a swaging device to install the sleeve one 1 and the sleeve two 4 on the two composite pipes 5 respectively, then place the gasket 3, align the sleeve one 1 and the sleeve two 4, install the clamp, and tighten the bolts to complete the installation.

[0036] This technical solution uses a co-extrusion process to dock and install the sleeve one 1 and the sleeve two 4 with the flanges of the two composite pipes 5 respectively, and then uses a high-quality rubber gasket with a larger width for sealing. The larger contact area and the installation of locking nuts or clamp fasteners make the sealing performance of this structure extremely superior, avoiding the occurrence of leakage due to poor sealing performance; the connection is more convenient and fast, the sealing effect is good, the cost is low, the pressure resistance strength is high, and it can be used for buried laying, and has a wider applicability compared with the flanged joint.

[0037] When the flanged wear-resistant joint in this structure conveys the medium, the medium will not come into contact with the joint, thus avoiding a series of treatments on the joint material and surface in response to the conveyed medium. Only surface anti-corrosion treatment needs to be considered, that is, it is processed with anti-corrosion materials, which greatly reduces the cost during the use of the joint and also greatly increases the service life. In addition, compared with the traditional threaded joint, this kind of joint eliminates the core pipe component, and the cost can be reduced by up to 40%; compared with the traditional flanged joint, the flange plate component is basically eliminated, and the cost can be reduced by up to 25%.

[0038] This structure has extremely high reliability, including but not limited to sealing performance and pressure resistance performance, and uses threaded connection and clamp connection, avoiding the leakage caused by the influence of the axial strain tension of the flange bolt connection on the bolt fastening. Therefore, this kind of joint can be buried and laid overhead, and there is no need to be laid outdoors like flange connection for easy monitoring at any time.

[0039] The installation and construction of this structure are very convenient. All relevant treatments will be completed before leaving the factory. During on-site construction, only the bolts or nuts need to be tightened, and the installation is fast and efficient. And due to its high service life and reliability, the later operation and maintenance cost are greatly reduced.

[0040] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights involved.

[0041] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Wear-resistant flanging joint device for butt joint of composite pipe nozzle, characterized in that: It includes sleeve one (1) and sleeve two (4). The sleeve one (1) and the sleeve two (4) are respectively adapted and fixed to the ends of two composite pipes (5) to be butt - jointed. A gasket (3) is provided between the ends of the butt - jointed ends of the two composite pipes (5). The ends of the sleeve one (1) and the sleeve two (4) are adapted and fixedly connected into one body through a locking and fixing device (2) to realize the butt - joint and fixation of the two composite pipes (5).

2. The wear-resistant flanging joint device for butt joint of the composite pipe nozzle according to claim 1, characterized in that: The sleeve one (1) is a socket - end sleeve buckled and fixed on the composite pipe (5), and the sleeve two (4) is a threaded - end sleeve. An outer positioning ring (6) is made on the outer cylinder wall of the sleeve one (1) facing the sleeve two (4), and the end of the sleeve one (1) abuts against the flanging end face of the end of the composite pipe (5) fixed thereto. The sleeve two (4) includes a buckling section for buckling and fixedly connecting with the composite pipe (5) and a connecting section with an outer cylinder diameter the same as the outer diameter of the outer positioning ring (6). A ring groove is made on the inner hole wall of the sleeve two (4) at the position of the port of the connecting section. The ring groove of the sleeve two (4) is inserted into the end of the sleeve one (1), and the end of the connecting section of the sleeve two (4) abuts against the outer end face of the outer positioning ring (6). The step surface at the position of the ring groove of the inner hole of the sleeve two (4) abuts against the flanging end face of the end of the composite sleeve (5) fixed thereto, and the flangings of the two composite pipes (5) and the gasket (3) are all located inside the ring groove of the sleeve two (4).

3. The wear-resistant flanging joint device for butt joint of composite pipe nozzle according to claim 2, characterized in that: The locking and fixing device (2) adopts a locking nut. An inner positioning ring (7) is provided in the inner threaded hole of the locking nut facing the end of the sleeve one (1). An external thread (8) is made on the outer wall of the connecting section of the sleeve two (4). The locking nut is sleeved on the sleeve one (1), and the inner threaded hole of the locking nut is adaptively connected with the external thread (8). By rotating the locking nut, the inner side end face of the inner positioning ring (7) contacts and positions with the ring face of the corresponding end of the outer positioning ring (6).

4. The wear-resistant flanging joint device for butt joint of composite pipe nozzle is characterized in that: The sleeve one (1) and the sleeve two (4) have the same structure. The sleeve one (1) and the sleeve two (4) both include a connecting section with an annular clamping groove (9) made on the outer circumferential wall and a buckling section for buckling and fixedly connecting with the composite pipe (5). A ring groove is made at the end of the inner hole of the connecting section of the sleeve one (1) and the sleeve two (4). The flangings at the ends of the composite pipe (5) and the gasket (3) are all located in the ring groove after the sleeve one (1) and the sleeve two (4) are butted.

5. The wear-resistant flanging joint device for butt joint of the composite pipe nozzle is characterized in that: The sleeve one (1) adopts a socket - type sleeve one, and the sleeve two (4) adopts a socket - type sleeve two. The sleeve one (1) and the sleeve two (4) both include a connecting section with an annular clamping groove (9) made on the outer circumferential wall and a buckling section for buckling and fixedly connecting with the composite pipe (5). The buckling sections of the sleeve one (1) and the sleeve two (4) are respectively fixed on the two composite pipes (5). The flangings at the ends of the two composite pipes (5) and the gasket between the flangings are all located in the ring groove at the end of the connecting section of the sleeve one (1). The end of the connecting section of the sleeve two (4) is inserted into the ring groove at the end of the connecting section of the sleeve one (1) and abuts against the flanging of the composite pipe (5) fixed thereto. And the end of the connecting section of the sleeve one (1) abuts against the step surface at the left end of the connecting section of the sleeve two (4).

6. The wear-resistant flanging joint device for butt joint of composite pipe nozzle according to claim 4 or 5, characterized in that: The locking and fixing device (2) is a clamp. The convex rings at both ends of the inner hole of the clamp are respectively adapted to the annular clamping grooves (9) of the first sleeve (1) and the second sleeve (4), and the two-piece clamp is fixedly connected into a whole by bolts.

7. The wear-resistant flanging joint device for butt joint of composite pipe nozzle according to claim 1, characterized in that: The gasket (3) is a sealing gasket with a V-shaped ring groove machined on the outer circumferential wall.

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