A multi-channel high-pressure fracturing manifold

Abstract

The application relates to the technical field of fracturing manifolds, and discloses a multi-channel high-pressure fracturing manifold which comprises a fracturing pipe support and a fracturing manifold group installed at the top end of the fracturing pipe support through bolts, the fracturing manifold group is composed of multiple fracturing pipes and multiple butterfly valves, and a new-old pipe mounting assembly for replacing the old fracturing pipe with a new one is arranged on one side of the fracturing manifold group. The new-old pipe positioning axis mechanism and the synchronous moving mechanism can be cooperatively used to quickly remove the old pipe and replace it with a new one, the replacement time of the fracturing pipe is significantly shortened, the height of the first supporting rod can be flexibly adjusted through cooperation of the hydraulic telescopic rod, the sleeve and the fixing rod, and the fracturing pipe with different positions and specifications can be adapted; the height is further accurately controlled in combination with the alignment mode of the transmitter and the receiver, and the system applicability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fracturing manifold, in particular to a multi-channel high-pressure fracturing manifold. BACKGROUND

[0002] In the development of unconventional oil and gas resources such as shale gas and tight oil and gas, large-scale hydraulic fracturing is a key technology. Among them, the fracturing manifold, as a key equipment connecting the fracturing pump truck and the wellhead, is responsible for the transportation and distribution of high-pressure fluid. The traditional fracturing manifold usually adopts an assembled structure of "nipple + single valve + pipeline", that is, a single valve, tee, cross and straight pipe section are spliced on site by a large number of high-pressure nipples.

[0003] However, the existing multi-channel high-pressure fracturing manifold still has the following problems:

[0004] 1. When the existing multi-channel high-pressure fracturing manifold is overhauled and the pipeline is replaced, a large number of cranes and manual labor are needed to replace it, which not only takes time but also requires extremely laborious scheduling.

[0005] 2. When the existing multi-channel high-pressure fracturing manifold is overhauled, it is basically observed by workers based on experience to observe the aging and liquid leakage of the manifold, and the inner wall of the manifold cannot be known to be washed and worn.

[0006] 3. When the existing manifold is replaced and hoisted, the worker needs to manually wrap the hoisting rope around the surface of the manifold due to the small gap between the manifold and the support, which may cause the worker to be careless and not tightly bound, which may cause dangerous situations. SUMMARY

[0007] In view of the deficiencies of the prior art, the present application provides a multi-channel high-pressure fracturing manifold, which mainly solves the problem that the multi-channel high-pressure fracturing manifold needs to use a large number of cranes and manual labor to replace the pipeline during overhaul, which not only takes time but also requires extremely laborious scheduling.

[0008] To achieve the above purpose, the present application provides the following technical solutions:

[0009] The utility model provides a kind of multi-channel high-pressure fracturing manifold, including fracturing pipe support and the fracturing manifold group being bolted at the top end of the fracturing pipe support, the fracturing manifold group is made of multiple fracturing pipes and multiple butterfly valves, one side of the fracturing manifold group is provided with new and old pipe mounting assembly for new and old replacement of fracturing pipe, the new and old pipe mounting assembly includes new and old pipe positioning axis mechanism being arranged at one side of the fracturing manifold group, and the new and old pipe mounting assembly further includes new and old pipe synchronous moving mechanism being arranged at one side of the fracturing manifold group, the new and old pipe mounting assembly includes new and old pipe quick locking mechanism, one side of the new and old pipe mounting assembly is provided with axis limiting assembly for the positioning of new and old pipe mounting assembly, the surface of fracturing pipe is provided with axis detection assembly for detecting the inside of fracturing pipe, one side of the new and old pipe mounting assembly is provided with protective cover for protecting new and old pipe positioning axis mechanism.

[0010] As a further scheme of the utility model, the new and old pipe positioning axis mechanism includes slide rail arranged at one side of the new and old pipe mounting assembly, first fixed plate is slidably connected to the upper side of the slide rail through sliding block, the new and old pipe positioning axis mechanism includes first fixed plate arranged at one side of the fracturing manifold group, the top surface of the first fixed plate is uniformly and fixedly connected with a plurality of support seats through bolts, the top end of the support seat is fixedly connected with fixed platform, and the top surface of the fixed platform is rotatably connected with rotary plate through bearing, the top surface of the first fixed plate is provided with rotary table, the output shaft of the rotary table is fixedly connected with the rotary plate, the top surface of the rotary plate is fixedly connected with rotating disc, the rotating disc is fixedly connected with bidirectional multi-stage hydraulic cylinder through bolts, the end points of the two piston rods of the bidirectional multi-stage hydraulic cylinder are fixedly connected with first connecting plate, and the side, away from the bidirectional multi-stage hydraulic cylinder, of the first connecting plate is fixedly connected with two first support rods in a symmetrical manner, and the first support rods are located below the fracturing pipe.

[0011] As a further scheme of the utility model, the top surface of the rotary plate is fixedly connected with two guide rails in a symmetrical manner, and the upper side of the rotary plate is provided with two second connecting plates in a symmetrical manner, and the two second connecting plates are respectively located at the two sides of the rotating disc, the two ends of each second connecting plate are slidably connected with two guide rails through sliding block respectively, and the top surface of each second connecting plate is fixedly connected with two second support rods in a symmetrical manner, and the two second support rods located at the same side are fixedly connected with the first connecting plate located at the same side.

[0012] As a further scheme of the utility model, each second connecting plate is arc-shaped structure with convex surface away from the rotating disc side.

[0013] As a further scheme of the present application, the new and old pipe quick locking mechanism comprises a snap ring arranged above each of the first support rods, the surface of each of the snap rings is slidably connected with two pin rods, the first support rods and the pin rods are correspondingly provided with pin holes, the pin rods are inserted into the pin holes and slidably connected with the first support rods, and the inner diameter of the snap ring is the same as the outer diameter of the fracturing pipe.

[0014] As a further scheme of the present application, the first support rod and the corresponding position of the snap ring are provided with a limiting cavity.

[0015] As a further scheme of the present application, the new and old pipe synchronous movement mechanism comprises two hydraulic telescopic rods symmetrically arranged on the top surface of the first fixed plate, the piston rod of each of the hydraulic telescopic rods is fixedly connected with the fixed table top, the bottom surface of the fixed table top is uniformly fixedly connected with a plurality of sleeves, the first fixed plate and the corresponding positions of the sleeves are fixedly connected with fixed rods, the fixed rods are inserted into the sleeves and slidably connected with the sleeves.

[0016] As a further scheme of the present application, the pair of shaft limiting assembly comprises two second fixed plates fixedly connected on one side of the first fixed plate, the surface of each of the second fixed plates is provided with a through hole, the inside of each of the through holes is slidably connected with a plug rod, the top end of the plug rod is fixedly connected with a linkage shaft, the top surface of the second fixed plate is symmetrically rotatably connected with two positioning discs through a bearing seat, one end of each of the positioning discs towards the linkage shaft is provided with an oval ring-shaped groove, the two ends of the linkage shaft are respectively inserted into the two oval ring-shaped grooves and slidably connected with the positioning discs through the oval ring-shaped grooves, one side of one of the positioning discs away from the linkage shaft is fixedly connected with a force applying rod, the bottom end of the plug rod is fixedly connected with a first magnet, the ground is provided with three groups of positioning holes corresponding to the first magnet, each of the positioning holes is composed of two insertion holes, each of the positioning holes corresponds to the pair of shaft detection assembly, and the inside of each of the insertion holes is fixedly connected with a second magnet.

[0017] As a further scheme of the present application, the pair of shaft detection assembly comprises a clamp fixedly connected with the surface of the fracturing pipe through bolts, the surface of the clamp is fixedly connected with a limiting hoop, the inside of the limiting hoop is installed with a noise recorder, and the noise recorder and the fracturing pipe are mutually attached.

[0018] As a further scheme of the present application, the surface of the clamp is fixedly connected with a first mounting plate, the inside of the first mounting plate is placed with a receiver, each of the first connecting plates and the first mounting plate are fixedly connected with a second mounting plate at corresponding positions, and the inside of the second mounting plate is placed with a transmitter.

[0019] Compared with the prior art, the present application provides a multi-channel high-pressure fracturing manifold with the following beneficial effects:

[0020] 1、The old pipe can be quickly removed and replaced with a new pipe synchronously through the cooperative work of the old and new pipe positioning axis mechanism and the synchronous movement mechanism, the replacement time of the fracturing pipe is significantly shortened, the maintenance operation efficiency is improved, and the production loss caused by long downtime is reduced

[0021] 2、The old and new pipe installation assembly can be accurately aligned with the target fracturing pipe during movement through the use of the shaft limiting component and the positioning hole and the magnet adsorption structure, installation difficulties or poor sealing problems caused by position deviation are avoided, and the accuracy and reliability of the replacement operation are improved.

[0022] 3、The old pipe can be stably supported during disassembly and the new pipe can be reliably fixed during installation through the cooperation of the snap ring, the pin rod and the limiting cavity of the old and new pipe quick locking mechanism, the rolling or displacement of the pipeline during operation is effectively prevented, and the operation safety is ensured.

[0023] 4、The height of the first support rod can be flexibly adjusted to adapt to fracturing pipes of different positions and specifications through the cooperation of the hydraulic telescopic rod, the sleeve and the fixing rod; combined with the alignment method of the transmitter and the receiver, the height is further accurately controlled, and the system applicability is improved.

[0024] 5、The noise recorder integrated on the clamp can monitor the fluid sound change inside the pipeline in real time, assist in judging the inner wall wear or blockage, realize early diagnosis of the health status of the fracturing pipe, and help prevent safety accidents such as leakage or rupture. DETAILED DESCRIPTION

[0025] Figure 1 It is a front side perspective structural schematic view of a multi-channel high-pressure fracturing manifold proposed by the present application;

[0026] Figure 2 It is a bidirectional multi-stage hydraulic cylinder and first connecting plate structure schematic view of a multi-channel high-pressure fracturing manifold proposed by the present application;

[0027] Figure 3 It is a sleeve and fixing rod structure schematic view of a multi-channel high-pressure fracturing manifold proposed by the present application;

[0028] Figure 4 It is a pin rod and pin hole structure schematic view of a multi-channel high-pressure fracturing manifold proposed by the present application;

[0029] Figure 5 It is a second connecting plate and first support rod structure schematic view of a multi-channel high-pressure fracturing manifold proposed by the present application;

[0030] Figure 6 This is a schematic diagram of the limiting clamp and noise recorder structure of a multi-channel high-pressure fracturing manifold proposed in this invention;

[0031] Figure 7 This is a schematic diagram of the positioning disk and elliptical annular groove structure of a multi-channel high-pressure fracturing manifold proposed in this invention.

[0032] In the diagram: 1. Fracturing manifold; 11. Fracturing pipe support;

[0033] 2. New and old pipe installation assembly; 21. Slide rail; 22. First fixing plate; 23. Support base; 24. Fixed platform; 25. Turntable; 26. Rotating plate; 27. Turntable; 28. Bidirectional multi-stage hydraulic cylinder; 29. ​​First connecting plate; 210. First support rod; 211. Limiting recess; 212. Second connecting plate; 213. Second support rod; 214. Snap ring; 215. Pin; 216. Pin hole; 217. Hydraulic telescopic rod; 218. Sleeve; 219. Fixing rod; 220. Guide rail;

[0034] 3. Shaft limiting assembly; 31. Second fixing plate; 32. Insert rod; 33. Positioning plate; 34. Linkage shaft; 35. Elliptical annular groove; 36. Force application rod; 37. First magnet;

[0035] 4. Shaft detection assembly; 41. Clamp; 42. First mounting plate; 43. Second mounting plate; 44. Limiting clamp; 45. Noise recorder;

[0036] 5. Protective cover. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0038] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0039] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the first feature is lower than the second feature in horizontal height.

[0040] Please refer to Figures 1-7 As shown in the figure, a multi-channel high-pressure fracturing manifold includes a fracturing pipe support 11 and a fracturing manifold group 1 mounted on the top end of the fracturing pipe support 11 by bolts, the fracturing manifold group 1 is composed of a plurality of fracturing pipes and a plurality of butterfly valves, one side of the fracturing manifold group 1 is provided with a new and old pipe mounting assembly 2 for replacing the new and old fracturing pipes, the new and old pipe mounting assembly 2 includes a new and old pipe positioning axis mechanism arranged on one side of the fracturing manifold group 1, and the new and old pipe mounting assembly 2 further includes a new and old pipe synchronous movement mechanism arranged on one side of the fracturing manifold group 1, the new and old pipe mounting assembly 2 includes a new and old pipe quick locking mechanism, one side of the new and old pipe mounting assembly 2 is provided with an axis limiting assembly 3 for positioning the new and old pipe mounting assembly 2, the surface of the fracturing pipe is provided with an axis detection assembly 4 for detecting the inside of the fracturing pipe, and one side of the new and old pipe mounting assembly 2 is provided with a protective cover 5 for protecting the new and old pipe positioning axis mechanism.

[0041] In order to solve the coaxial transposition of the new and old pipes, the new and old pipe positioning axis mechanism includes a slide rail 21 arranged on one side of the new and old pipe mounting assembly 2, a first fixed plate 22 is connected with the slide rail 21 through a sliding block, the new and old pipe positioning axis mechanism includes the first fixed plate 22 arranged on one side of the fracturing manifold group 1, a plurality of support seats 23 are uniformly and fixedly connected to the top surface of the first fixed plate 22 through bolts, a fixed table top 24 is fixedly connected to the top end of the support seat 23, a rotating plate 26 is rotatably connected to the top surface of the fixed table top 24 through a bearing, a rotary table 25 is installed on the top surface of the first fixed plate 22, the output shaft of the rotary table 25 is fixedly connected with the rotating plate 26, a rotating disc 27 is fixedly connected to the top surface of the rotating plate 26, a bidirectional multi-stage hydraulic cylinder 28 is fixedly connected to the top surface of the rotating disc 27 through bolts, first connecting plates 29 are fixedly connected to the end points of the two piston rods of the bidirectional multi-stage hydraulic cylinder 28, and two first support rods 210 are fixedly connected to one side of the first connecting plate 29 away from the bidirectional multi-stage hydraulic cylinder 28, and the first support rod 210 is located below the fracturing pipe.

[0042] The top surface of the rotating plate 26 is symmetrically fixedly connected with two guide rails 220, and the upper portion of the rotating plate 26 is symmetrically provided with two second connecting plates 212, and the two second connecting plates 212 are located on the two sides of the rotating disc 27 respectively, the two ends of each second connecting plate 212 are slidably connected with the two guide rails 220 through sliding blocks respectively, and the top surface of each second connecting plate 212 is symmetrically fixedly connected with two second supporting rods 213, and the two second supporting rods 213 located on the same side are fixedly connected with the first connecting plate 29 on the same side, and each second connecting plate 212 is a circular arc structure with the convex surface away from the side of the rotating disc 27.

[0043] When it is necessary to replace the fracturing pipe, the slide rail 21 is first removed from the inside of the protective cover 5, the slide rail 21 will slide on the surface of the slide rail 21 through the sliding block until the first supporting rod 210 corresponds to the fracturing pipe to be replaced, then the new fracturing pipe is placed on the surface of the first supporting rod 210 away from the fracturing pipe group 1, then the bidirectional multi-stage hydraulic cylinder 28 is started, and the two piston rods of the bidirectional multi-stage hydraulic cylinder 28 move the two first supporting rods 210 on both sides to drive the two first supporting rods 210 on the side close to the fracturing pipe group 1 to the bottom side of the fracturing pipe, then the worker can disassemble the old fracturing pipe, the old fracturing pipe will fall on the surface of the first supporting rod 210 due to gravity, and the old fracturing pipe is supported, then the bidirectional multi-stage hydraulic cylinder 28 is started again, so that the piston rods on both sides of the bidirectional multi-stage hydraulic cylinder 28 are withdrawn at the same time, and finally withdrawn to a position where no interference occurs, the rotating table 25 is started, the rotating table 25 drives the rotating plate 26 and the rotating disc 27 to rotate synchronously until 180° is rotated, the position replacement of the new and old pipes is realized, and the positions of the new and old pipes after replacement are the same, so that the worker can replace the fracturing pipe.

[0044] When the first supporting rod 210 is moved, in order to avoid that the fracturing pipe deforms the piston rod of the bidirectional multi-stage hydraulic cylinder 28, when the first connecting plate 29 moves, the second connecting plate 212 is driven to slide on the surface of the limiting cavity 211 through the second supporting rod 213, so that the pressure received by the piston rod of the bidirectional multi-stage hydraulic cylinder 28 is dispersed, and deformation of the piston rod is avoided.

[0045] In order to solve the technical problem of locking the new and old pipes, the new and old pipe quick locking mechanism is adopted, the new and old pipe quick locking mechanism comprises a clamping ring 214 arranged above each first supporting rod 210, the surface of each clamping ring 214 is slidably connected with two pin rods 215, the positions corresponding to the pin rods 215 of the first supporting rod 210 are provided with pin holes 216, the pin rods 215 are inserted into the pin holes 216 and are slidably connected with the first supporting rod 210, the inner diameter of the clamping ring 214 is the same as the outer diameter of the fracturing pipe, and the positions corresponding to the first supporting rod 210 of the clamping ring 214 are provided with limiting cavities 211.

[0046] When the first support rod 210 is located below the old pipe, the worker holds two clamping rings 214, clamps the two clamping rings 214 above the fracturing pipe respectively, so that the two clamping rings 214 are located above the two first support rods 210 respectively, and then the four pin rods 215 are respectively inserted through the two pin rods 215 and the pin holes 216 corresponding thereto, the clamping ring 214 is positioned through the pin rod 215, and the positioning of the old fracturing pipe is realized. When the old fracturing pipe is removed, it falls into the inside of the limiting recess 211, and the old fracturing pipe is limited again through the shape of the limiting recess 211.

[0047] When the new fracturing pipe is placed on the surface of the first support rod 210, the new fracturing pipe is first placed in the inside of the limiting recess 211, and the new fracturing pipe is preliminarily positioned through the limiting recess 211, and the new fracturing pipe is positioned again through the pin rod 215, and the locking of the new fracturing pipe is realized.

[0048] In this process, since the inner diameter of the clamping ring 214 is the same as the outer diameter of the fracturing pipe, the clamping ring 214 can be closely attached to the fracturing pipe, and stable support is provided for subsequent positioning work. After the pin rod 215 is inserted through the clamping ring 214 and the pin hole 216, the clamping ring 214 is firmly positioned on the first support rod 210, and the stability of the entire locking mechanism is further enhanced through the close cooperation with the pin hole 216. When the old fracturing pipe is removed and falls into the inside of the limiting recess 211, the specific shape of the limiting recess 211 can ensure that the old fracturing pipe cannot roll or shift at will, thereby facilitating subsequent processing work. Similarly, when the new fracturing pipe is placed, the limiting recess 211 can also play a preliminary positioning role, so that the new fracturing pipe can be accurately placed in the predetermined position, and the new fracturing pipe is firmly locked through the repositioning of the pin rod 215, and the smooth progress of the entire fracturing process is ensured.

[0049] In order to solve the technical problem of synchronous movement of the new and old pipes, the present application adopts a new and old pipe synchronous movement mechanism which comprises two hydraulic telescopic rods 217 symmetrically installed on the top surface of the first fixed plate 22, and the piston rod of each hydraulic telescopic rod 217 is fixedly connected with the fixed table top 24. The bottom surface of the fixed table top 24 is uniformly fixedly connected with a plurality of sleeves 218, and the first fixed plate 22 is fixedly connected with a fixed rod 219 at a position corresponding to the sleeve 218. The fixed rod 219 is inserted into the inside of the sleeve 218 and is in sliding connection with the sleeve 218.

[0050] In order to avoid the remaining articles from blocking the first support rod 210 when the first support rod 210 moves, the initial height of the first support rod 210 is not just right, when the height of the first support rod 210 needs to be adjusted, the hydraulic telescopic rod 217 is started, the hydraulic telescopic rod 217 drives the fixed table top 24 away from the support base 23, thereby indirectly moving the first support rod 210 upwards, in order to ensure that the moving direction of the first support rod 210 is not deviated, when the fixed table top 24 moves, the sleeve 218 slides on the surface of the fixed rod 219, thereby limiting the position of the fixed table top 24 through the sleeve 218 and the fixed rod 219.

[0051] In order to solve the technical problem of replacing the fractured pipe, the application adopts, the shaft limiting assembly 3 includes two second fixed plates 31 fixedly connected on one side of the first fixed plate 22, the surface of each second fixed plate 31 is provided with a through hole, the inside of each through hole is slidably connected with a plug rod 32, and the top end of the plug rod 32 is fixedly connected with a linkage shaft 34, the top surface of the second fixed plate 31 is symmetrically rotatably connected with two positioning discs 33 through bearing seats, one end of each positioning disc 33 towards the linkage shaft 34 is provided with an oval ring-shaped groove 35, the two ends of the linkage shaft 34 are respectively inserted into the inside of the two oval ring-shaped grooves 35 and are slidably connected with the positioning discs 33 through the oval ring-shaped grooves 35, and one side of the positioning disc 33 away from the linkage shaft 34 is fixedly connected with a force applying rod 36, the bottom end of the plug rod 32 is fixedly connected with a first magnet 37, and the ground is provided with three groups of positioning holes corresponding to the first magnet 37, each group of positioning holes is composed of two insertion holes, and each group of positioning holes corresponds to the shaft detection assembly 4, and the inside of each insertion hole is fixedly connected with a second magnet.

[0052] In order to make the first support rod 210 accurately move to the position of the fractured pipe that needs to be replaced, the plug rod 32 is aligned with one group of positioning holes, and then the force applying rod 36 is forced to rotate around the center of the positioning disc 33, so that the force applying rod 36 is parallel to the ground after being rotated by 90° and being perpendicular to the ground, when the positioning disc 33 rotates, the oval ring-shaped groove 35 forces the plug rod 32 through the linkage shaft 34, the plug rod 32 is inserted into the insertion hole, and after the plug rod 32 is inserted, the first magnet 37 is adsorbed with the magnet in the insertion hole, thereby limiting the new and old pipe installation assembly 2, so that the first support rod 210 can correspond to the fractured pipe.

[0053] When the first magnet 37 needs to be pulled out, the force applying rod 36 is pressed to make the force applying rod 36 change from being parallel to being perpendicular to the ground, and the plug rod 32 is pulled out from the inside of the insertion hole, because the force applying rod 36 is heavier than the plug rod 32, when the force applying rod 36 is perpendicular to the ground, the plug rod 32 will not slide and contact the ground.

[0054] In actual operation, when it is necessary to replace the fracturing pipes at different positions, the above steps are repeated, the first support rod 210 is accurately moved to the target fracturing pipe position, and the insertion rod 32 is aligned with the corresponding set of positioning holes again. By applying appropriate force to the force applying rod 36, the force applying rod 36 is rotated about the center of the positioning disc 33 to rotate 90° from the parallel ground state to be perpendicular to the ground, or to rotate 90° from the perpendicular ground state to be parallel to the ground, thereby controlling the insertion rod 32 to be inserted into or pulled out of the insertion hole. This design not only is simple to operate, but also effectively ensures the accurate correspondence between the first support rod 210 and the fracturing pipe, improves the efficiency and accuracy of the entire replacement process, and prevents the insertion rod 32 from accidentally falling into contact with the ground and being damaged, thereby ensuring the stable operation of the equipment and prolonging the service life.

[0055] In order to solve the technical problem of detecting the inner wall of the fracturing pipe, the application adopts, the shaft detection assembly 4 includes a clamp 41 fixedly connected to the surface of the fracturing pipe by bolts, a limiting hoop 44 fixedly connected to the surface of the clamp 41, and a noise recorder 45 installed in the limiting hoop 44, which is in close contact with the fracturing pipe.

[0056] When the fracturing pipe is overhauled, the sound size of the liquid flow in the fracturing pipe heard by the noise recorder 45 can accurately judge the wear condition of the inner wall of the fracturing pipe.

[0057] If the sound abnormally increases or decreases, it indicates that there may be serious wear or blockage in the inner wall of the fracturing pipe. At this time, the overhaul personnel can preliminarily judge the approximate position and degree of wear or blockage according to the specific change characteristics of the sound. By further combining other detection methods such as endoscopic observation, the actual condition of the inner wall of the fracturing pipe can be more accurately determined, so that appropriate maintenance or replacement measures can be taken in time, thereby ensuring the safety and reliability of the fracturing pipe in the subsequent use process, and avoiding more serious production accidents caused by excessive wear of the inner wall of the fracturing pipe.

[0058] In order to solve the technical problem of accurately aligning the fracturing pipe, the application adopts, the surface of the clamp 41 is fixedly connected with a first mounting plate 42, the inside of the first mounting plate 42 is placed with a receiver, each first connecting plate 29 is fixedly connected with a second mounting plate 43 at a position corresponding to the first mounting plate 42, and the inside of the second mounting plate 43 is placed with a transmitter.

[0059] When the first support rod 210 is raised and aligned, the direction of the first mounting plate 42 is adjusted in advance, and then the second mounting plate 43 is installed with the transmitter and the receiver respectively, when the first support rod 210 is raised, until the first support rod 210 is raised to the bottom surface position of the fracturing pipe, at this time the receiver receives the signal of the transmitter and stops, so as to realize the accurate adjustment of the height of the first support rod 210, and by changing the direction of the first mounting plate 42, the first support rod 210 can be applied to the fracturing pipes with different heights within a certain range.

[0060] In actual operation, this adjustment method has high flexibility and adaptability. Maintenance personnel can quickly and conveniently adjust the direction of the first mounting plate 42 according to the actual height of different fracturing pipes, so that the first support rod 210 can be accurately raised to the appropriate position. Moreover, the accurate adjustment method using the transmitter and the receiver not only improves the accuracy of the adjustment, but also greatly saves the adjustment time, improves the overall maintenance efficiency, and ensures that the maintenance work can be carried out more efficiently and smoothly, thereby providing a strong guarantee for the accurate detection and maintenance of the inner wall condition of the fracturing pipe.

[0061] The application is divided into the following steps when in use:

[0062] S1: When the fracturing pipe needs to be replaced, first remove the slide rail 21 from the inside of the protective cover 5, the slide rail 21 will slide on the surface of the slide rail 21 through the sliding block, until the first support rod 210 corresponds to the fracturing pipe to be replaced, then place the new fracturing pipe on the surface of the first support rod 210 away from the fracturing pipe group 1, then start the bidirectional multi-stage hydraulic cylinder 28, the two piston rods of the bidirectional multi-stage hydraulic cylinder 28 will drive the two first connecting plates 29 to move the two first support rods 210 on both sides, until the two first support rods 210 on the side close to the fracturing pipe group 1 are located at the bottom side of the fracturing pipe, then the worker can disassemble the old fracturing pipe, the old fracturing pipe will fall on the surface of the first support rod 210 due to gravity, so as to support the disassembled fracturing pipe, then start the bidirectional multi-stage hydraulic cylinder 28 again, so that the piston rods on both sides of the bidirectional multi-stage hydraulic cylinder 28 are withdrawn at the same time, and finally withdrawn to a position where no interference occurs, then start the turntable 25, the turntable 25 drives the rotating plate 26 and the rotating disc 27 to rotate synchronously, until the rotating plate 26 and the rotating disc 27 are rotated to 180°, so as to replace the positions of the new and old pipes, and make the positions of the new and old pipes after replacement the same, thereby facilitating the worker to replace the fracturing pipe;

[0063] S2: When the first support rod 210 is located below the old pipe, the worker holds two clamping rings 214, clamps two clamping rings 214 above the fracturing pipe respectively, so that the two clamping rings 214 are located above the two first support rods 210 respectively, and then four pin rods 215 are respectively inserted through the pin holes 216 corresponding to the pin rods 215, and the clamping ring 214 is positioned by the pin rod 215, so that the old fracturing pipe is positioned, and when the old fracturing pipe is removed, it falls into the inside of the limiting cavity 211, and the old fracturing pipe is limited again by the shape of the limiting cavity 211;

[0064] S3: In order to avoid the remaining articles blocking the first support rod 210 when the first support rod 210 moves, the initial height of the first support rod 210 is not just right, and when the height of the first support rod 210 needs to be adjusted, the hydraulic telescopic rod 217 is started, the hydraulic telescopic rod 217 drives the fixed table 24 away from the support base 23, thereby indirectly moving the first support rod 210 upward, in order to ensure that the moving direction of the first support rod 210 is not deviated, when the fixed table 24 moves, the sleeve 218 slides on the surface of the fixed rod 219, thereby limiting the position of the fixed table 24 by the sleeve 218 and the fixed rod 219;

[0065] S4: In order to make the first support rod 210 accurately move to the position of the fracturing pipe to be replaced, the insertion rod 32 is aligned with one set of positioning holes, and then the force applying rod 36 is forced to make the force applying rod 36 rotate around the center of the positioning disc 33 as the axis, so that the force applying rod 36 that should be perpendicular to the ground is rotated 90° and then parallel to the ground, when the positioning disc 33 rotates, the elliptical ring-shaped groove 35 forces the insertion rod 32 through the linkage shaft 34, the insertion rod 32 is inserted into the insertion hole, and after the insertion rod 32 is inserted, the first magnet 37 is attracted to the magnet inside the insertion hole, thereby limiting the old and new pipe installation assembly 2, so that the first support rod 210 can correspond to the fracturing pipe;

[0066] S5: When the fracturing pipe is overhauled, the sound size of the liquid flow in the fracturing pipe heard by the noise recorder 45 can accurately judge the wear condition of the inner wall of the fracturing pipe, if the sound abnormally increases or decreases, it indicates that there may be serious wear or blockage in the inner wall of the fracturing pipe. At this time, the overhaul personnel can preliminarily judge the approximate position and degree of wear or blockage according to the specific change characteristics of the sound. By further combining other detection means such as endoscopic observation, the actual condition of the inner wall of the fracturing pipe can be more accurately determined, so that corresponding maintenance or replacement measures can be taken in time, so as to ensure the safety and reliability of the fracturing pipe in the subsequent use process, and avoid more serious production accidents caused by excessive wear of the inner wall of the fracturing pipe;

[0067] S6: When the first support rod 210 is in the process of lifting alignment, the direction of the first mounting plate 42 is adjusted in advance, then the second mounting plate 43 is installed with the transmitter and the receiver respectively with the first mounting plate 42, when the first support rod 210 is lifted, until the first support rod 210 is lifted to the bottom surface position of the fracturing pipe, at this time the receiver receives the signal of the transmitter and stops, so as to realize the accurate adjustment of the height of the first support rod 210, by changing the direction of the first mounting plate 42, the first support rod 210 can be applied to the fracturing pipe with different heights in a certain range.

[0068] The technical features of the above embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered as the scope of the present application.

[0069] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A multi-channel high-pressure fracturing manifold, comprising a fracturing pipe support and a fracturing manifold assembly bolted to the top of the fracturing pipe support, characterized in that, The fracturing manifold consists of multiple fracturing pipes and multiple butterfly valves. A new and old pipe installation assembly for replacing old fracturing pipes is provided on one side of the fracturing manifold. This assembly includes a new and old pipe positioning axis mechanism on one side of the fracturing manifold, a new and old pipe synchronous movement mechanism on one side of the fracturing manifold, and a new and old pipe quick-locking mechanism. An axis-limiting component for positioning the new and old pipe installation assembly is provided on one side of the assembly. An axis-detection component for detecting the interior of the fracturing pipe is provided on the surface of the fracturing pipe. A protective cover for protecting the new and old pipe positioning axis mechanism is provided on one side of the assembly. The positioning axis mechanism for new and old pipes includes a slide rail disposed on one side of the new and old pipe installation assembly. A first fixed plate is slidably connected above the slide rail via a slider. The positioning axis mechanism for new and old pipes includes a first fixed plate disposed on one side of the fracturing pipe assembly. Several support seats are evenly distributed and fixedly connected to the top surface of the first fixed plate by bolts. A fixed platform is fixedly connected to the top of the support seats, and a rotating plate is rotatably connected to the top surface of the fixed platform via bearings. A turntable is installed on the top surface of the first fixed plate. The output shaft of the turntable is fixedly connected to the rotating plate. A turntable is fixedly connected to the top surface of the rotating plate. A bidirectional multi-stage hydraulic cylinder is fixedly connected to the top surface of the turntable by bolts. The ends of the two piston rods of the bidirectional multi-stage hydraulic cylinder are fixedly connected to a first connecting plate. Two first support rods are symmetrically fixedly connected to the side of the first connecting plate away from the bidirectional multi-stage hydraulic cylinder, and the first support rods are located below the fracturing pipe. The synchronous movement mechanism of the new and old pipes includes two hydraulic telescopic rods symmetrically installed on the top surface of the first fixed plate. The piston rod of each hydraulic telescopic rod is fixedly connected to the fixed platform. A plurality of sleeves are uniformly fixedly connected to the bottom surface of the fixed platform. Fixed rods are fixedly connected to the first fixed plate at positions corresponding to the sleeves. The fixed rods are inserted into the sleeves and slidably connected to the sleeves. The alignment limiting assembly includes two second fixing plates fixedly connected to one side of the first fixing plate. Each second fixing plate has a through hole on its surface, and a rod is slidably connected inside each through hole. A linkage shaft is fixedly connected to the top of each rod. Two positioning discs are symmetrically rotatably connected to the top surface of the second fixing plate through bearing seats. Each positioning disc has an elliptical annular groove at one end facing the linkage shaft. The two ends of the linkage shaft are respectively inserted into the two elliptical annular grooves and slidably connected to the positioning discs through the elliptical annular grooves. A force-applying rod is fixedly connected to the side of one of the positioning discs away from the linkage shaft. A first magnet is fixedly connected to the bottom end of the rod. Three sets of positioning holes corresponding to the first magnet are opened on the ground. Each set of positioning holes consists of two insertion holes, and each set of positioning holes corresponds to the alignment detection assembly. A second magnet is fixedly connected inside each insertion hole. The axis detection assembly includes a clamp fixedly connected to the surface of the fracturing tube by bolts, a limit clamp fixedly connected to the surface of the clamp, a noise recorder installed inside the limit clamp, and the noise recorder being in contact with the fracturing tube. A first mounting plate is fixedly connected to the surface of the clamp, and a receiver is placed inside the first mounting plate. A second mounting plate is fixedly connected to each position corresponding to the first mounting plate, and a transmitter is placed inside the second mounting plate.

2. The multi-channel high-pressure fracturing manifold according to claim 1, characterized in that, The top surface of the rotating plate is symmetrically and fixedly connected to two guide rails, and two second connecting plates are symmetrically arranged above the rotating plate. The two second connecting plates are located on both sides of the turntable. The two ends of each second connecting plate are slidably connected to the two guide rails through sliders. The top surface of each second connecting plate is symmetrically and fixedly connected to two second support rods, and the two second support rods on the same side are fixedly connected to the first connecting plate on the same side.

3. The multi-channel high-pressure fracturing manifold according to claim 2, characterized in that, Each of the second connecting plates is an arc-shaped structure with a convex surface away from the turntable.

4. A multi-channel high-pressure fracturing manifold according to claim 2, characterized in that, The quick locking mechanism for new and old pipes includes a retaining ring disposed above each of the first support rods. Two pins are slidably connected to the surface of each retaining ring. Pin holes are opened at positions corresponding to the pins on the first support rods. The pins are inserted into the pin holes and slidably connected to the first support rods. The inner diameter of the retaining ring is the same as the outer diameter of the fracturing pipe.

5. A multi-channel high-pressure fracturing manifold according to claim 4, characterized in that, A limiting recess is formed at the corresponding position of the first support rod and the retaining ring.

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