A protective non-metallic petroleum pipe fitting

Abstract

The invention relates to the technical field of petroleum pipe fittings, in particular to a protective non-metallic petroleum pipe fitting, comprising two pipe bodies, a wear-resistant mechanism installed on the two pipe bodies, and a hoisting mechanism, a sealing mechanism is arranged between the two pipe bodies, and a fixing mechanism is arranged at opposite ends of the two pipe bodies; the two pipe bodies are brought close together by hoisting equipment in cooperation with the two hoisting mechanisms, and the two pipe bodies are connected by hot-melt connection, when the opposite ends of the two pipe bodies collide, an insertion rod on the side wall of a fixing ring on one of the pipe bodies will be inserted into the inside of a plug hole on the other pipe body, and further multiple insertion rods will radially squeeze a limiting rod at the same time, a spring will open, the limiting rod will penetrate the inside of the pipe body, and the limiting rod will be buckled with a limiting hole on the outer wall of a connecting pipe, thereby increasing the stability of the connection between the two pipe bodies and avoiding fracture at the connection of the pipe bodies, and the setting of the connecting pipe can compensate for the thickness of the placement groove at the end of the pipe body, thereby improving the pressure resistance effect of the pipe body.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum pipe fittings, in particular to a protective non-metallic petroleum pipe fitting. Background Art

[0002] Petroleum pipe fittings are a general term for parts in pipeline systems that play the role of connection, control, direction change, diversion, sealing, support, etc. They are all pressure-bearing pipes; non-metallic petroleum pipe fittings are usually made of non-metallic materials such as fiberglass and plastic composite materials, and are lightweight and corrosion-resistant; non-metallic petroleum pipe fittings are mainly connected by electric fusion connection and hot melt connection.

[0003] However, in order to increase the wear resistance of the pipe wall, the non-metallic pipe fittings currently used for oil transportation are provided with a wear-resistant layer on the inner wall of the pipeline, and the outer wall of the pipe fittings is not provided with wear-resistant and anti-skid components. When the pipe fittings are installed, the pipeline is moved by lifting equipment. During the movement, the outer wall of the pipe fitting rubs against sand and gravel, which is easy to cause wear of the pipe fittings and reduce the wall thickness. When the oil pressure is too high, the worn parts are prone to rupture and oil leakage. In addition, the outer wall of the pipe fitting is not anti-skid, so it is easy to slip during lifting, which is inconvenient for the movement of the pipe fitting; after the end of the pipe fitting is moved to the specified position, it is difficult to support and position the end of the pipe fitting, and the two pipe fittings are prone to shaking when the opposite ends are connected, which is not convenient for the docking of the two pipe fittings; when the two non-metallic pipe fittings are connected, the two pipelines are connected together only by hot-melt welding, and no sealing and reinforcement mechanism is provided. When the oil pressure changes frequently, cracks are prone to occur at the connection, resulting in oil leakage. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a protective non-metallic petroleum pipe fitting.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a protective non-metallic petroleum pipe fitting, comprising two pipe bodies, a wear-resistant mechanism installed on the two pipe bodies, and a hanging mechanism, a sealing mechanism is provided between the two pipe bodies, a fixing mechanism is provided at the opposite ends of the two pipe bodies, a hanging mechanism is provided on the two pipe bodies, and a supporting mechanism is provided on the two hanging mechanisms;

[0006] The sealing mechanism comprises two placement grooves, the ends of the two tube bodies are provided with placement grooves, and the insides of the two tube bodies are provided with sealing grooves opposite to each other, the insides of the two sealing grooves are provided with sealing rings, the insides of the two tube bodies are provided with connecting pipes located inside the placement grooves, the two ends of the connecting pipes are respectively engaged with the insides of the sealing grooves on the two tube bodies, the insides of the two sealing grooves are provided with sealing rings, and the two ends of the connecting pipes are respectively in conflict with the sealing rings inside the two tube bodies,

[0007] The fixing mechanism includes two fixing rings, and the two tube bodies are fixedly connected with fixing rings, wherein the side wall of one of the fixing rings is horizontally fixedly connected with an insertion rod, and the side wall of the other fixing ring is provided with a socket corresponding to the insertion rod, and the fixing ring with the socket is internally slidably connected with a limiting rod, a spring is clamped between the limiting rod and the tube body, the insertion rod is inserted into the inside of the socket, a limiting hole is provided on the outer wall of the connecting tube, and the limiting rod is inserted into the inside of the limiting hole.

[0008] Specifically, the cross-sections of the two sealing rings are in a convex shape, and the minimum width of the two sealing rings is equal to the opening width of the side surface of the connecting pipe.

[0009] Specifically, the insertion rod is fixed to the side wall of one of the tube bodies in the shape of an equilateral triangle, and the insertion hole is distributed on the inner side of the other tube body in the shape of an equilateral triangle. Three limiting rods are provided, and the limiting holes are distributed equidistantly in the shape of a triangle on the outside of the connecting tube. The end of the insertion rod and the top edge of the limiting rod are both arc-shaped structures.

[0010] Specifically, the wear-resistant structure includes a reinforcement layer and a wear-resistant layer. The inner walls of the two pipe bodies and the interior of the connecting pipe are fixed with the reinforcement layer, and the inner side of the reinforcement layer is provided with a wear-resistant layer.

[0011] Specifically, the wear-resistant mechanism also includes wear-resistant strips, and the tops of the two tubes are equidistantly fixedly connected with a plurality of wear-resistant strips in a circular array, the inner side of the reinforcement layer and the wear-resistant layer are both hexagonal prism-shaped, and the six inner walls of the three wear-resistant layers are aligned.

[0012] Specifically, the lifting mechanism includes a slide groove and a limit groove, a slide groove is formed between two adjacent wear-resistant strips on the two tube bodies, and arc-shaped limit grooves are equidistantly provided on multiple wear-resistant strips, the two tube bodies are slidably connected with moving rings, the two moving rings are slidably connected with two groups of wear-resistant strips respectively, the two moving rings are slidably connected with a limit seat located at the top of the limit groove, the limit seat and the limit groove are detachably connected, the two moving rings are threadedly connected with studs that interfere with the limit seat, and iron chains are installed on the tops of the two studs.

[0013] Specifically, the limiting seat is engaged with the limiting groove, and the cross section of the limiting seat is a T-shaped structure.

[0014] Specifically, the lifting mechanism also includes a connecting rod and a connecting tube, wherein one end of the iron chain is fixedly connected to a connecting rod with an external thread, and the other end of the iron chain is fixedly connected to a connecting tube with an internal thread, and the connecting rod and the connecting tube are threadedly connected.

[0015] Specifically, the support mechanism includes a moving groove and a moving block. Both sides of the two moving rings are provided with moving grooves with an arc-shaped structure. The two moving rings are slidably connected to moving blocks through the moving grooves. The two moving blocks on the two moving rings are rotatably connected to brackets.

[0016] Specifically, the support mechanism further includes bolts, and the two brackets on the same side are fixed by bolts, and the inner side of the moving block located on the bracket is an arc-shaped structure.

[0017] The beneficial effects of the present invention are:

[0018] (1) The protective non-metallic petroleum pipe fitting described in the present invention has a sealing mechanism installed between two pipe bodies and a fixing mechanism installed on the two pipe bodies. When the two pipe bodies are connected, the two pipe bodies are brought together by a lifting device in cooperation with the two lifting mechanisms, and a connecting pipe is placed inside the placement groove between the two pipe bodies. The two ends of the connecting pipe are in contact with the sealing rings inside the two pipe bodies to complete the sealing. The two pipe bodies are connected by a hot melt connection method. When the opposite ends of the two pipe bodies are in contact, the plug rod on the side wall of the fixing ring on one of the pipe bodies will be inserted into the plug hole on the other pipe body. Further, multiple plug rods will radially squeeze the limit rod at the same time, and the spring will be opened, further realizing that the limit rod passes through the interior of the pipe body, and the limit rod is buckled with the limit hole on the outer wall of the connecting pipe, thereby increasing the stability of the connection between the two pipe bodies and avoiding breakage at the connection of the pipe bodies. In addition, the setting of the connecting pipe can compensate for the thickness of the placement groove at the end of the pipe body, thereby improving the pressure resistance of the pipe body.

[0019] (2) The protective non-metallic petroleum pipe fitting described in the present invention has a wear-resistant mechanism on the pipe body. The reinforcement layer and the wear-resistant layer located inside the pipe body can increase the stability of the pipe body structure and the wear-resistant effect of the inner wall of the pipe body. The wear-resistant strip on the outer wall of the pipe body can increase the wear-resistant effect of the outer wall of the pipe body when it moves to avoid pipe impact and rupture. On the other hand, it can provide a moving track for the lifting mechanism. During lifting, the moving ring can be moved to the end of the pipe body, and the stud can be threadedly connected with the hole on the moving ring. The stud can further push the limit seat inside the moving ring to snap into the limit groove on the wear-resistant strip to complete the fixation of the moving ring and the pipe body. The pipe body can be moved by hooking the iron chain through the lifting equipment. When the two pipe bodies are connected, the two moving rings can be adjusted to a position similar to the total length of the two iron chains and fixed to the wear-resistant strip. The two iron chains are fixed through the connecting rod and the connecting tube to further reinforce the connection between the two pipe bodies and improve the stability of the connection between the two pipe bodies.

[0020] (3) The protective non-metallic petroleum pipe fitting described in the present invention has two movable rings provided with supporting mechanisms. When the movable rings assist the pipe body in lifting and moving, the brackets can be rotated 180 degrees, so that the two brackets will be located on the top side of the pipe body. The two brackets are fixed by bolts, which will not affect the movement of the pipe body. After the position is determined, the two brackets can be reset and fixed by bolts. The two brackets can be in contact with the ground to support the pipe body, which is convenient for the connection of the pipe body on the one hand and can achieve radial fixation of the two movable rings on the other hand. It can also avoid axial movement of the movable rings, ensure that the two chains are in a taut state, and ensure the connection effect of the two pipe bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the connection structure of the tube body, the fixing ring and the insertion rod of the present invention;

[0024] Figure 3 It is a schematic diagram of the connection structure of the pipe body, the placement groove and the connecting pipe of the present invention;

[0025] Figure 4 It is a schematic diagram of the connection structure of the tube body, the sealing groove and the sealing ring of the present invention;

[0026] Figure 5 It is a schematic diagram of the connection structure of the connecting pipe, the reinforcement layer and the wear-resistant layer of the present invention;

[0027] Figure 6 It is a schematic diagram of the connection structure of the wear-resistant strip, the movable ring and the limit seat of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection structure of the fixing ring, the plug rod and the plug hole of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection structure of the movable ring, the stud and the iron chain of the present invention;

[0030] Fig. 9 It is a schematic diagram of the connection structure of the iron chain, the connecting rod and the connecting tube of the present invention.

[0031] In the figure: 1. pipe body; 2. wear-resistant mechanism; 201. reinforcement layer; 202. wear-resistant layer; 203. wear-resistant strip; 3. lifting mechanism; 301. moving ring; 302. iron chain; 303. slide groove; 304. limiting groove; 305. stud; 306. limiting seat; 307. connecting rod; 308. connecting tube; 4. fixing mechanism; 401. fixing ring; 402. plug rod; 403. plug hole; 404. limiting rod; 405. spring; 406. limiting hole; 5. supporting mechanism; 501. bracket; 502. bolt; 503. moving groove; 504. moving block; 6. sealing mechanism; 601. connecting pipe; 602. placement groove; 603. sealing groove; 604. sealing ring. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figure 1-Figure 9As shown, a protective non-metallic petroleum pipe fitting of the present invention comprises two pipe bodies 1, a wear-resistant mechanism 2 installed on the two pipe bodies 1, and a hoisting mechanism 3. A sealing mechanism 6 is provided between the two pipe bodies 1, and a fixing mechanism 4 is provided at the opposite ends of the two pipe bodies 1. The two pipe bodies 1 are provided with a hoisting mechanism 3, and the two hoisting mechanisms 3 are provided with a supporting mechanism 5; the sealing mechanism 6 comprises two placement grooves 602, and the ends of the two pipe bodies 1 are provided with placement grooves 602, and the insides of the two pipe bodies 1 are relatively provided with sealing grooves 603, and the insides of the two sealing grooves 603 are relatively provided with sealing grooves 603. The two tube bodies 1 are both provided with sealing rings 604, the two tube bodies 1 are both provided with connecting tubes 601 located inside the placement grooves 602, the two ends of the connecting tube 601 are respectively engaged with the sealing grooves 603 on the two tube bodies 1, the two sealing grooves 603 are both provided with sealing rings 604, the two ends of the connecting tube 601 are respectively in conflict with the sealing rings 604 inside the two tube bodies 1, the fixing mechanism 4 includes two fixing rings 401, the two tube bodies 1 are both fixedly connected with the fixing rings 401, and the side wall of one of the fixing rings 401 is horizontally fixedly connected with the insertion rod 402, The side wall of the other fixing ring 401 is provided with a plug hole 403 corresponding to the plug rod 402, and the fixing ring 401 with the plug hole 403 is internally slidably connected to a limit rod 404, and a spring 405 is clamped between the limit rod 404 and the tube body 1, and the plug rod 402 is inserted into the plug hole 403. The outer wall of the connecting pipe 601 is provided with a limit hole 406, and the limit rod 404 is inserted into the limit hole 406; the cross-section of the two sealing rings 604 is a convex structure, and the minimum width of the two sealing rings 604 is equal to the opening width of the side of the connecting pipe 601; The insertion rod 402 is fixed to the side wall of one of the tube bodies 1 in the shape of an equilateral triangle, and the insertion hole 403 is distributed on the inner side of the other tube body 1 in the shape of an equilateral triangle. Three limiting rods 404 are provided, and the limiting holes 406 are distributed on the outer side of the connecting pipe 601 in the shape of a triangle at equal intervals. The end of the insertion rod 402 and the top edge of the limiting rod 404 are both in an arc structure; the wear-resistant mechanism 2 includes a reinforcement layer 201 and a wear-resistant layer 202. The inner walls of the two tube bodies 1 and the interior of the connecting pipe 601 are fixed with the reinforcement layer 201, and the inner side of the reinforcement layer 201 is provided with a wear-resistant layer 202;When connecting the two tube bodies 1, the two tube bodies 1 are brought close together by means of the lifting equipment in cooperation with the two lifting mechanisms 3, and the connecting tube 601 is placed inside the placement groove 602 between the two tube bodies 1. After the two tube bodies 1 are butted, the two ends of the connecting tube 601 are inserted into the inside of the two sealing grooves 603, and the two ends of the connecting tube 601 are respectively in contact with the sealing rings 604 inside the two tube bodies 1 to complete the sealing. The two tube bodies 1 are connected by hot-melt connection. When the opposite ends of the two tube bodies 1 are in contact, the insertion rod 402 on the side wall of the fixing ring 401 on one of the tube bodies 1 will be inserted into the inside of the insertion hole 403 on the other tube body 1, and further, the plurality of insertion rods 402 will simultaneously limit the limit rod 40 4 radial extrusion, the spring 405 opens, further realizing that the limiting rod 404 penetrates the interior of the pipe body 1, and the limiting rod 404 is buckled with the limiting hole 406 on the outer wall of the connecting pipe 601, which increases the stability of the connection between the two pipe bodies 1, can prevent the axial pulling of the pipe body 1, and avoid the breakage of the connection of the pipe body 1. The setting of the connecting pipe 601 can compensate for the thickness of the placement groove 602 at the end of the pipe body 1, improve the pressure resistance of the pipe body 1, and the wear-resistant layer 202 can increase the wear resistance of the pipe wall during oil transportation, increase the service life of the pipe body 1, and the reinforcement layer 201 with a hexagonal prism structure can increase the radial force strength of the pipe body 1, and can also prevent the pipe body 1 from cracking. ;

[0034] Specifically, Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9As shown, the wear-resistant mechanism 2 also includes wear-resistant strips 203, and the tops of the two tube bodies 1 are equidistantly fixedly connected with a plurality of wear-resistant strips 203 in a circular array, the inner side of the reinforcement layer 201 and the wear-resistant layer 202 are both hexagonal prism-shaped structures, and the six inner walls of the three wear-resistant layers 202 are aligned; the hoisting mechanism 3 includes a slide groove 303 and a limit groove 304, a slide groove 303 is formed between two adjacent wear-resistant strips 203 on the two tube bodies 1, and arc-shaped limit grooves 304 are equidistantly provided on the plurality of wear-resistant strips 203, and the two tube bodies 1 are slidably connected with a moving ring 301, and the two moving rings 301 are respectively connected to the two groups of wear-resistant The two movable rings 301 are slidably connected with a limit seat 306 located at the top of the limit groove 304, and the limit seat 306 is detachably connected to the limit groove 304. The two movable rings 301 are threadedly connected with a stud 305 that conflicts with the limit seat 306, and the top of the two studs 305 are installed with an iron chain 302; the limit seat 306 is engaged with the limit groove 304, and the cross-section of the limit seat 306 is a T-shaped structure; the lifting mechanism 3 also includes a connecting rod 307 and a connecting tube 308, one end of the iron chain 302 is fixedly connected to a connecting rod 307 with an external thread, and the other ... The end of the iron chain 302 is fixedly connected to a connecting tube 308 with an internal thread, and the connecting rod 307 is threadedly connected to the connecting tube 308; the reinforcement layer 201 and the wear-resistant layer 202 located inside the pipe body 1 can increase the stability of the pipe body 1 structure, and on the other hand, can increase the wear resistance of the inner wall of the pipe body 1; the wear-resistant strip 203 on the outer wall of the pipe body 1 can, on the one hand, increase the wear resistance of the outer wall of the pipe body 1 when it moves, to avoid the pipe from being impacted and broken, and on the other hand, can provide a moving track for the moving ring 301. When hoisting, the moving ring 301 can be moved to the end of the pipe body 1, and the stud 305 is threadedly connected to the hole on the moving ring 301. Further, the stud 305 The limit seat 306 inside the movable ring 301 will be pushed to snap into the limit groove 304 on the wear-resistant strip 203, completing the fixation of the movable ring 301 and the pipe body 1. The iron chain 302 can be hooked by the lifting equipment to drive the movement of the pipe body 1. After the two pipe bodies 1 are connected, the two movable rings 301 can be adjusted to a position almost equal to the total length of the two iron chains 302, that is, the distance between the two movable rings 301 and the total length of the two iron chains 302 can be fixed to the wear-resistant strip 203, and the two iron chains 302 are fixed by the connecting rod 307 and the connecting tube 308, so as to further reinforce the connection between the two pipe bodies 1 and improve the stability of the connection between the two pipe bodies 1.

[0035] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, the support mechanism 5 includes a moving groove 503 and a moving block 504. The two sides of the two moving rings 301 are provided with an arc-shaped moving groove 503. The two moving rings 301 are slidably connected with the moving block 504 through the moving groove 503. The two moving blocks 504 on the two moving rings 301 are rotatably connected with the bracket 501. The support mechanism 5 also includes a bolt 502. The two brackets 501 on the same side are fixed by the bolt 502. The inner side of the moving block 504 on the bracket 501 is an arc-shaped structure. The moving ring 301 assists the pipe body 1 in lifting and moving. When the position is determined, the bracket 501 can be rotated 180 degrees, and the two brackets 501 will be located on the top side of the tube body 1. The two brackets 501 are fixed by bolts 502, which will not affect the movement of the tube body 1. After the position is determined, the two brackets 501 can be reset and fixed by bolts 502. The two brackets 501 can contact the ground to support the tube body 1. On the one hand, it is convenient for the connection of the tube body 1. On the other hand, it can achieve radial fixation of the two moving rings 301, and can also avoid axial movement of the moving rings 301, ensuring that the two chains 302 are in a taut state, thereby ensuring the connection effect of the two tube bodies 1.

[0036] When the present invention is used, first, when connecting two tube bodies 1, the two tube bodies 1 are brought close together by means of a lifting device in cooperation with two lifting mechanisms 3, and a connecting tube 601 is placed inside the placement groove 602 between the two tube bodies 1. After the two tube bodies 1 are butted, both ends of the connecting tube 601 are inserted into the inside of the two sealing grooves 603, and both ends of the connecting tube 601 are respectively in contact with the sealing rings 604 inside the two tube bodies 1 to complete the sealing. The two tube bodies 1 are connected by a hot-melt connection method. When the opposite ends of the two tube bodies 1 are in contact, the insertion rod 402 on the side wall of the fixing ring 401 on one of the tube bodies 1 will be inserted into the inside of the insertion hole 403 on the other tube body 1, and further, multiple insertion rods 402 are simultaneously The limiting rod 404 is radially squeezed and the spring 405 is opened, so that the limiting rod 404 further penetrates the interior of the tube body 1, and the limiting rod 404 is buckled with the limiting hole 406 on the outer wall of the connecting pipe 601, which increases the stability of the connection between the two tube bodies 1, prevents the axial pulling of the tube body 1, and avoids the fracture of the connection of the tube body 1. The setting of the connecting pipe 601 can compensate for the thickness of the groove 602 at the end of the tube body 1, improves the pressure resistance of the tube body 1, and the wear-resistant layer 202 can increase the wear resistance of the tube wall during oil transportation, and increase the service life of the tube body 1. The reinforcement layer 201 with a hexagonal structure can increase the radial force strength of the tube body 1, and can also prevent the tube body 1 from cracking.

[0037] Then, the reinforcement layer 201 and the wear-resistant layer 202 located inside the pipe body 1 can increase the stability of the pipe body 1 structure, and on the other hand, can increase the wear resistance of the inner wall of the pipe body 1. The wear-resistant strips 203 on the outer wall of the pipe body 1 can, on the one hand, increase the wear resistance of the outer wall of the pipe body 1 when it moves, to avoid the pipe from being hit and broken, and on the other hand, can provide a moving track for the moving ring 301. When hoisting, the moving ring 301 can be moved to the end of the pipe body 1, and the studs 305 can be threadedly connected to the holes on the moving ring 301. Further, the studs 305 will push the limit seat 306 inside the moving ring 301 to buckle to the wear-resistant strips. The movable ring 301 is fixed to the pipe body 1 inside the limiting groove 304 on 203, and the pipe body 1 can be moved by hooking the iron chain 302 through the lifting equipment. After the two pipe bodies 1 are connected, the two movable rings 301 can be adjusted to a position similar to the total length of the two iron chains 302 (that is, the distance between the two movable rings 301 and the total length of the two iron chains 302) and fixed to the wear-resistant strip 203, and the two iron chains 302 are fixed through the connecting rod 307 and the connecting tube 308, so as to further reinforce the connection between the two pipe bodies 1 and improve the stability of the connection between the two pipe bodies 1;

[0038] Finally, when the movable ring 301 assists in the lifting and movement of the pipe body 1, the bracket 501 can be rotated one hundred and eighty degrees, so that the two brackets 501 will be located on the top side of the pipe body 1, and the two brackets 501 are fixed by bolts 502, which will not affect the movement of the pipe body 1. After determining the position, the two brackets 501 can be reset and fixed by bolts 502. The two brackets 501 can contact the ground to support the pipe body 1, which is convenient for the connection of the pipe body 1 on the one hand, and can achieve radial fixation of the two movable rings 301 on the other hand, and can also avoid axial movement of the movable rings 301, thereby ensuring that the two chains 302 are in a taut state and ensuring the connection effect of the two pipe bodies 1.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A protective non-metallic petroleum pipe fitting, characterized in that: The device comprises two tube bodies (1), a wear-resistant mechanism (2) mounted on the two tube bodies (1), and a lifting mechanism (3); a sealing mechanism (6) is provided between the two tube bodies (1); fixing mechanisms (4) are provided at opposite ends of the two tube bodies (1); the two tube bodies (1) are provided with a lifting mechanism (3); and the two lifting mechanisms (3) are provided with a supporting mechanism (5); The sealing mechanism (6) comprises two placement grooves (602), the ends of the two tube bodies (1) are each provided with a placement groove (602), and the insides of the two tube bodies (1) are oppositely provided with sealing grooves (603), the insides of the two sealing grooves (603) are each provided with sealing rings (604), the insides of the two tube bodies (1) are each provided with a connecting tube (601) located inside the placement groove (602), the two ends of the connecting tube (601) are respectively engaged with the insides of the sealing grooves (603) on the two tube bodies (1), and the two ends of the connecting tube (601) are respectively in contact with the sealing rings (604) inside the two tube bodies (1); The fixing mechanism (4) comprises two fixing rings (401), and the two tube bodies (1) are fixedly connected with the fixing rings (401), wherein the side wall of one of the fixing rings (401) is horizontally fixedly connected with the insertion rod (402), and the side wall of the other fixing ring (401) is provided with a plug hole (403) corresponding to the insertion rod (402), and the fixing ring (401) provided with the plug hole (403) is internally slidably connected with a limit rod (404), a spring (405) is clamped between the limit rod (404) and the tube body (1), the insertion rod (402) is inserted into the plug hole (403), and the outer wall of the connecting tube (601) is provided with a limit hole (406), and the limit rod (404) is inserted into the limit hole (406); The wear-resistant mechanism (2) comprises wear-resistant strips (203), and a plurality of wear-resistant strips (203) are fixedly connected to the tops of the two tube bodies (1) in an annular array at equal intervals. The hoisting mechanism (3) comprises a slide groove (303) and a limit groove (304), wherein a slide groove (303) is formed between two adjacent wear-resistant strips (203) on the two tube bodies (1), and arc-shaped limit grooves (304) are evenly spaced on a plurality of the wear-resistant strips (203), and the two tube bodies (1) are slidably connected with a moving ring (301), and the two moving rings (301) are respectively slidably connected with two groups of wear-resistant strips (203), and the two moving rings (301) are slidably connected with a limit seat (306) located at the top of the limit groove (304), and the limit seat (306) and the limit groove (304) are detachably connected, and the two moving rings (301) are threadedly connected with a stud (305) that contacts the limit seat (306), and the top of the two studs (305) are installed with an iron chain (302); The support mechanism (5) comprises a moving groove (503) and a moving block (504); both sides of the two moving rings (301) are provided with an arc-shaped moving groove (503); the two moving rings (301) are slidably connected to the moving blocks (504) via the moving grooves (503); and the two moving blocks (504) on the two moving rings (301) are rotatably connected to the brackets (501); The support mechanism (5) further comprises a bolt (502), and the two brackets (501) on the same side are fixed together by the bolt (502), and the inner side of the moving block (504) located on the bracket (501) is in an arc-shaped structure.

2. The protective non-metallic petroleum pipe fitting according to claim 1, characterized in that: The cross-sections of the two sealing rings (604) are in a convex-shaped structure, and the minimum width of the two sealing rings (604) is equal to the opening width of the side of the connecting pipe (601).

3. The protective non-metallic petroleum pipe fitting according to claim 2 is characterized in that: The insertion rod (402) is in the shape of an equilateral triangle and is fixed to the side wall of one of the tube bodies (1), and the insertion hole (403) is in the shape of an equilateral triangle and is distributed on the inner side of the other tube body (1). Three limiting rods (404) are provided, and the limiting holes (406) are in the shape of a triangle and are equidistantly distributed on the outer side of the connecting tube (601). The end of the insertion rod (402) and the top edge of the limiting rod (404) are both in an arc-shaped structure.

4. The protective non-metallic petroleum pipe fitting according to claim 1, characterized in that: The wear-resistant structure (2) comprises a reinforcement layer (201) and a wear-resistant layer (202); the inner walls of the two tube bodies (1) and the interior of the connecting tube (601) are both fixed with the reinforcement layer (201); and the inner side of the reinforcement layer (201) is provided with the wear-resistant layer (202).

5. The protective non-metallic petroleum pipe fitting according to claim 4 is characterized in that: The inner side of the reinforcement layer (201) and the wear-resistant layer (202) are both in a hexagonal column structure, and the six inner walls of the three wear-resistant layers (202) are aligned.

6. The protective non-metallic petroleum pipe fitting according to claim 1, characterized in that: The limiting seat (306) is engaged with the limiting groove (304), and the cross section of the limiting seat (306) is a T-shaped structure.

7. The protective non-metallic petroleum pipe fitting according to claim 1, characterized in that: The hoisting mechanism (3) further comprises a connecting rod (307) and a connecting tube (308), wherein one end of the iron chain (302) is fixedly connected to a connecting rod (307) with an external thread, and the other end of the iron chain (302) is fixedly connected to a connecting tube (308) with an internal thread, and the connecting rod (307) and the connecting tube (308) are threadedly connected.

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