CN114893644A - Tee bend prosthetic devices - Google Patents
Tee bend prosthetic devices Download PDFInfo
- Publication number
- CN114893644A CN114893644A CN202210644316.9A CN202210644316A CN114893644A CN 114893644 A CN114893644 A CN 114893644A CN 202210644316 A CN202210644316 A CN 202210644316A CN 114893644 A CN114893644 A CN 114893644A
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- Prior art keywords
- tee joint
- way
- repaired
- sleeve
- combined
- Prior art date
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- Pending
Links
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 230000008439 repair process Effects 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 229910000746 Structural steel Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 10
- 210000001503 joint Anatomy 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
Abstract
The invention discloses a tee joint repairing device, which comprises a connecting piece and two clamping sleeves, wherein the two clamping sleeves are wrapped outside a tee joint to be repaired, the two clamping sleeves are connected into a combined tee joint through the connecting piece, three interfaces of the combined tee joint extend to cover the joints of the three interfaces of the tee joint to be repaired and the three corresponding pipelines, and a gap is arranged between the inner wall of the combined tee joint and the outer wall of the tee joint to be repaired, the gap is filled with a resin layer, therefore, the tee joint to be repaired is butted and connected into a combined tee joint through the two clamping sleeves outside the tee joint to be repaired, and the combined tee joint is wrapped outside the tee joint to be repaired to perform strengthening treatment on the tee joint to be repaired, and the resin layer is filled between the combined tee joint and the tee joint to be repaired, so that the sealing property between the combined tee joint and the tee joint to be repaired can be improved, and meanwhile, the tee joint to be repaired is further reinforced.
Description
Technical Field
The invention belongs to the field of pipe fitting repair, and particularly relates to a three-way repair device.
Background
In a natural gas station, for the repair mode of unqualified tee joints, if a B-shaped sleeve or a special-shaped B-shaped sleeve (without mature technology) is used, pressure reduction live-fire welding or emptying operation needs to be carried out, and the difficulty of handling the station stop and field live-fire operation process and field construction is high. Although the composite material is used for repairing the tee joint, the operation is simple, the problem of the winding of the belly of the tee joint exists, the composite material is not suitable for repairing the special-shaped structure of the tee joint, the later-period aging problem of the composite material cannot be thoroughly solved, and the permanent repair of the low-strength tee joint cannot be realized.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a tee repair apparatus that has a simple structure and can repair strength of a low-strength tee in service.
In order to achieve the purpose, the technical scheme of the invention is as follows: the three-way repairing device comprises a connecting piece and two clamping sleeves, wherein the two clamping sleeves are wrapped outside a to-be-repaired three-way pipe and are connected into a combined three-way pipe through the connecting piece, three interfaces of the combined three-way pipe all extend to the position, where the three interfaces of the to-be-repaired three-way pipe are wrapped, of the joints of the three pipelines corresponding to the three interfaces of the to-be-repaired three-way pipe, a gap is formed between the inner wall of the combined three-way pipe and the outer wall of the to-be-repaired three-way pipe, and a resin layer is filled in the gap.
The beneficial effects of the above technical scheme are that: therefore, the tee joint to be repaired is connected into the combined tee joint through the two clamping sleeves, the combined tee joint wraps the tee joint to be repaired to perform reinforcement treatment on the tee joint to be repaired, the resin layer is filled between the combined tee joint and the tee joint to be repaired, the sealing performance between the combined tee joint and the tee joint to be repaired can be improved, and meanwhile, the tee joint to be repaired is further subjected to reinforcement treatment.
In the technical scheme, the outer surface of the tee joint to be repaired and the outer walls of the three pipelines close to the tee joint to be repaired are subjected to sand blasting and polishing treatment before being wrapped by the combined tee joint, and the tee joint is cleaned after being polished.
The beneficial effects of the above technical scheme are that: so make the resin layer can with wait to restore the tight combination of the corresponding tip of tee bend and three pipelines, avoid the resin layer to appear the crack with the laminating department of waiting to restore tee bend and three pipelines.
In the technical scheme, glue injection holes penetrating through the clamping sleeve are formed in any one of the clamping sleeves, vent holes penetrating through the clamping sleeve are formed in at least one of the clamping sleeves, the glue injection holes are used for injecting molten resin slurry into the gaps, and the resin layer is formed after the molten resin slurry is injected and solidified.
The beneficial effects of the above technical scheme are that: therefore, the resin layer can be fully filled between the tee joint to be repaired and the combined tee joint.
Among the above-mentioned technical scheme the block cover includes main groove pipe and branch groove pipe, main groove pipe and branch groove pipe are the arc groove pipe of vertical bar shape, and its arc central angle is 180, the one end of branch groove pipe with the middle part of main groove pipe notch one side is connected and is link up, just the notch orientation of main groove pipe and branch groove pipe is unanimous and the notch side flushes each other.
The beneficial effects of the above technical scheme are that: the combined tee joint has a simple structure, and when the combined tee joint is an equal-diameter tee joint, the diameter of the branch groove pipe is consistent with that of the main groove pipe.
In the technical scheme, the connecting piece comprises a plurality of bolts, the edges of the joint of the butt joint sides of the two clamping sleeves are provided with outward turned edges, the outward turned edges of the two clamping sleeves are provided with connecting holes which are correspondingly arranged at intervals along the length direction, after the two clamping sleeves are in butt joint, the two corresponding connecting holes are aligned with each other and inserted into one bolt, and the threaded end of the bolt is in threaded connection with at least one nut.
The beneficial effects of the above technical scheme are that: the structure is simple, and the connecting effect is good.
In the technical scheme, the three joints of the combined tee joint are respectively provided with an inner flanging, and the diameter of an inner hole at the inner flanging is consistent with the outer diameter of the corresponding pipeline.
The beneficial effects of the above technical scheme are that: therefore, the three interfaces of the combined tee joint and the three pipelines can be more conveniently and rapidly sealed.
In the technical scheme, a plurality of screw holes penetrating through the clamping sleeves are uniformly distributed on the groove walls of the two clamping sleeves, each screw hole is in threaded connection with a jacking bolt with a threaded section facing the groove of the clamping sleeve, the jacking bolts are screwed down to fasten the combined tee joint on the tee joint to be repaired, and three interfaces of the combined tee joint and the corresponding interfaces of the tee joint to be repaired are all coaxially distributed.
The beneficial effects of the above technical scheme are that: so make to make and make to be connected more firmly between combination tee bend and the tee bend of waiting to restore, can ensure the thickness distribution of the resin layer in the clearance even simultaneously.
In the technical scheme, the clamping sleeve is made of 16Mn type low-alloy high-strength structural steel; the wall thickness of the clamping sleeve is delta, wherein
Wherein, P c Calculated withstand pressure for the snap-fit sleeve, D i To engage the internal diameter of the sleeve, D 0 Is the outside diameter of the engaging sleeve, phi is the welding joint coefficient of the engaging sleeve, [ sigma ]] t The allowable stress of the clamping sleeve.
The beneficial effects of the above technical scheme are that: the raw material source is wide, the processing is convenient, and the pressure-resistant requirement can be met.
The technical proposal is thatThe material of the clamping sleeve is consistent with that of the tee joint to be repaired, the wall thickness of the clamping sleeve is delta, wherein,
is the weld coefficient of the clamping sleeve, F is the strength design coefficient of the clamping sleeve, t is the temperature reduction coefficient of the clamping sleeve, sigma s For the minimum yield strength of the snap-fit sleeve, p is the design pressure of the pipe, and D is the outside diameter of the snap-fit sleeve.
The beneficial effects of the above technical scheme are that: this allows the wall thickness of the snap-fit sleeve to be relatively thin.
In the technical scheme, the maximum distance between two adjacent connecting holes on the outward turning edge is
Wherein d is B Is the nominal diameter of the bolt, delta f Is the effective thickness of the flange.
The beneficial effects of the above technical scheme are that: so that the two clamping sleeves are connected more firmly.
Drawings
FIG. 1 is a schematic diagram of a tee joint to be repaired and three pipes in the prior art;
FIG. 2 is a schematic structural diagram of a combined tee wrapped outside a tee to be repaired in the embodiment of the invention;
FIG. 3 is a schematic view of the structure of the engaging sleeve according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a combination tee in an embodiment of the present invention;
FIG. 5 is a schematic view of the combination tee and the pipeline fastened by the jacking bolt in the embodiment of the invention.
In the figure: the three-way pipe comprises a combination tee joint 1, a connecting piece 11, a clamping sleeve 12, a main groove pipe 121, a branch groove pipe 122, an outward flanging 123, a connecting hole 1231, an inward flanging 124, a tightening bolt 125, a glue injection hole 126, an exhaust hole 127, a tee joint to be repaired 2 and a pipeline 3.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As shown in fig. 1-3, this embodiment provides a tee repair device, which includes a connecting member 11 and two engaging sleeves 12, where the two engaging sleeves 12 are wrapped outside a tee 2 to be repaired, the two engaging sleeves 12 are connected to form a combined tee 1 through the connecting member 11, three ports of the combined tee 1 extend to wrap the joints of the three ports of the tee 2 to be repaired and the three corresponding pipelines 3, a gap is formed between the inner wall of the combined tee 1 and the outer wall of the tee 2 to be repaired, the gap is filled with a resin layer, so that the tee to be repaired is butted and connected to form the combined tee through the two engaging sleeves, the combined tee is wrapped outside the tee to be repaired to reinforce the tee to be repaired, and the resin layer is filled between the combined tee and the tee to be repaired to improve the sealing performance between the combined tee and the tee to be repaired, and meanwhile, the tee joint to be repaired is further strengthened.
In the technical scheme, the outer surface of the tee joint 2 to be repaired and the three pipelines 3 are close to the outer wall of the tee joint 2 to be repaired, sand blasting and polishing treatment (polishing to be rough surface) is carried out before the outer wall is wrapped by the combined tee joint, and the tee joint and the three pipelines are cleaned after polishing, so that the resin layer can be combined with the tee joint to be repaired and the corresponding end parts of the three pipelines to be compact, and cracks are prevented from appearing at the joint parts of the resin layer, the tee joint to be repaired and the three pipelines.
As shown in fig. 4, in any one of the above technical solutions, a glue injection hole 126 is formed through the bayonet sleeve 12, and a vent hole 127 is formed through at least one of the bayonet sleeves 12, the glue injection hole is used for injecting molten resin slurry into the gap (the width of the gap is 15-30mm), and the resin layer is formed after the injected molten resin slurry is solidified, so that the resin layer can be fully filled between the tee joint to be repaired and the combined tee joint.
In the above technical solution the engaging sleeve 12 includes a main slot tube 121 and a branch slot tube 122, the main slot tube 121 and the branch slot tube 122 are straight arc slot tubes, and the arc center angle thereof is 180 °, one end of the branch slot tube 122 is connected with and is run through at the middle part of one side of the notch of the main slot tube 121, and the notch orientations of the main slot tube 121 and the branch slot tube 122 are consistent and the notch sides are flush with each other, the structure is simple, when the combined tee joint is an equal-diameter tee joint, the diameter of the branch slot tube is consistent with the diameter of the main slot tube.
In the above technical solution, the connecting member 11 includes a plurality of bolts, the edges of the joint at the butt joint side of the two engaging sleeves 12 are provided with the outward turned edges 123, the outward turned edges 123 of the two engaging sleeves 12 are provided with the connecting holes 1231 correspondingly arranged along the length direction at intervals, after the two engaging sleeves 12 are in butt joint, the two corresponding connecting holes 1231 are aligned with each other and inserted with one bolt, the threaded end of the bolt is in threaded connection with at least one nut, and the connecting member is simple in structure and good in connecting effect.
In the technical scheme, the three interfaces of the combined tee joint 1 are respectively provided with the inward flanging 124, and the diameter of the inner hole at the inward flanging 124 is consistent with the outer diameter of the corresponding pipeline 3, so that the three interfaces of the combined tee joint and the three pipelines can be more conveniently sealed.
As shown in fig. 5, in the above technical solution, a plurality of screw holes penetrating through the two clamping sleeves 12 are uniformly distributed on the groove walls of the two clamping sleeves 12, and each screw hole is in threaded connection with a tightening bolt 125 with a thread section facing the groove of the clamping sleeve 12, the tightening bolts 125 are screwed down to fasten the combined tee 1 on the tee 2 to be repaired, and three interfaces of the combined tee 1 and the corresponding interfaces of the tee 2 to be repaired are all coaxially distributed, so that the connection between the combined tee and the tee 2 to be repaired is firmer, and the uniform thickness distribution of the resin layer in the gap can be ensured.
In the technical scheme, the clamping sleeve 12 is made of 16Mn type low-alloy high-strength structural steel; the wall thickness of the locking sleeve 12 is δ, wherein
Wherein, P c Calculated withstand pressure for the engaging sleeve 12, D i To engage the inner diameter, D, of the sleeve 12 0 Is the outer diameter of the snap sleeve 12 (wherein, no matter the combined tee is an equal-diameter tee or a special tee, the inner diameter D of the snap sleeve i And an outer diameter D 0 The inner diameter and the outer diameter of the main groove pipe are respectively taken), phi is the welding joint coefficient of the clamping sleeve 12 (namely the welding joint coefficient of the welding part of the main groove pipe and the branch groove pipe), and sigma is] t The allowable stress of the clamping sleeve 12 has wide raw material source and convenient processing, and can meet the pressure-resistant requirement (when p) c Is 12MPa, D i 921.5mm, phi is 0.8, [ sigma ]] t 172.5MPa, the wall thickness is at least 40 mm).
In the above technical solution, the material of the snap sleeve 12 is the same as that of the tee 2 to be repaired (the material of the tee to be repaired is X70 pipeline steel), and the wall thickness of the snap sleeve 12 is δ, wherein,
the coefficient of the weld for the clamping sleeve (usually 1), F the coefficient of the strength design for the clamping sleeve (usually 0.5), t the coefficient of the temperature reduction for the clamping sleeve (usually 1), σ s For minimum yield strength of the snap-fit sleeve, p is the design pressure of the pipe and D is the outer diameter of the snap-fit sleeve, which allows the wall thickness of the snap-fit sleeve to be relatively thin.
In the above technical solution, the maximum distance between two adjacent connecting holes 1231 on the outward turned edge 123 is
Wherein d is B Is the nominal diameter of the bolt, delta f Is the effective thickness of the flange 123, such that the two snap-fit sleeves are connected more firmly, wherein d B Preferably 42mm, delta f Preferably 40mm, then
A maximum of 206mm, and it is further preferable that the distance between two adjacent bolts is 120mm in order to improve the connection firmness of the snap sleeve.
Preferably, after the combined tee joint is wrapped on the tee joint to be repaired, the distance between the connector end part of the combined tee joint and the connector end part corresponding to the tee joint to be repaired is not less than 10cm (namely, at least 10cm of each pipeline is wrapped in the combined tee joint), and a flexible sealing adhesive tape is injected between the inner hole of the inner flanging of the combined tee joint and the outer wall of the pipeline.
The glue injection hole is preferably arranged at the lower end of the combined tee joint, the exhaust hole is preferably arranged at the upper end of the combined tee joint, so that molten resin slurry can be gradually filled in the gap from bottom to top, bubbles in the resin layer can be avoided, and in addition, an anticorrosive paint layer needs to be coated on the outer wall of the combined tee joint after the repair of the tee joint to be repaired is completed.
It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Also, when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For ease of description, spatially relative terms, such as "over", "above", "on", "upper surface", "over", and the like, may be used herein to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above" may include both an orientation of "above" and "below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a tee joint prosthetic devices, its characterized in that includes connecting piece (11) and two block fit cover (12), two block fit cover (12) parcel is outside waiting to restore tee joint (2), and two block fit cover (12) pass through connecting piece (11) connect into combination tee joint (1), just the three interface of combination tee joint (1) all extends to including the junction parcel of waiting to restore the three interface of tee joint (2) and three pipeline (3) that correspond, just the inner wall of combination tee joint (1) with wait to restore and have the clearance between the outer wall of tee joint (2), the clearance intussuseption is filled with the resin layer.
2. The three-way repair device according to claim 1, wherein the outer surface of the three-way to be repaired (2) and the outer walls of the three pipes (3) close to the three-way to be repaired (2) are subjected to sand blasting and grinding treatment before being wrapped by the combined three-way, and are cleaned after being ground.
3. The three-way prosthetic device according to claim 1, wherein any one of said snap sleeves (12) is formed with a glue injection hole (126) therethrough, and at least one of said snap sleeves (12) is formed with a vent hole (127) therethrough, said glue injection hole being adapted to inject a molten resin paste into said gap and to form said resin layer after the injected molten resin paste is solidified.
4. The three-way repair device according to claim 1, wherein the clamping sleeve (12) comprises a main groove pipe (121) and a branch groove pipe (122), the main groove pipe (121) and the branch groove pipe (122) are straight arc groove pipes, the arc center angle of each arc groove pipe is 180 degrees, one end of the branch groove pipe (122) is connected with and communicated with the middle part of one side of the notch of the main groove pipe (121), and the notches of the main groove pipe (121) and the branch groove pipe (122) are in the same orientation and the notch sides are flush with each other.
5. The three-way repair device according to claim 1, wherein the connecting member (11) comprises a plurality of bolts, the connecting edges of the butt-joint side joints of the two engaging sleeves (12) are provided with flanges (123), the flanges (123) of the two engaging sleeves (12) are provided with correspondingly arranged connecting holes (1231) at intervals along the length direction thereof, after the two engaging sleeves (12) are butted, the two corresponding connecting holes (1231) are aligned with each other and inserted into one bolt, and the threaded end of the bolt is in threaded connection with at least one nut.
6. The three-way repair device according to claim 1, wherein the three joints of the combined three-way pipe (1) are provided with inner flanges (124), and the diameters of inner holes at the inner flanges (124) are consistent with the outer diameters of the corresponding pipelines (3).
7. The three-way repairing device according to claim 1, wherein a plurality of screw holes are uniformly distributed on the wall of each of the two clamping sleeves (12), and a tightening bolt (125) with a thread section facing the groove of the clamping sleeve (12) is screwed at each of the screw holes, and the tightening bolts (125) are tightened to fasten the combined three-way pipe (1) on the three-way pipe (2) to be repaired, so that three interfaces of the combined three-way pipe (1) and the corresponding interfaces of the three-way pipe (2) to be repaired are coaxially distributed.
8. The three-way prosthetic device of claim 1, characterized in that the snap-fit sleeve (12) is made of 16Mn type low-alloy high-strength structural steel; the wall thickness of the clamping sleeve (12) is delta, wherein
Wherein, P c Calculated withstand pressure for the snap-fit sleeve (12), D i Is the inner diameter of the engaging sleeve (12), D 0 Is the outer diameter of the clamping sleeve (12), phi is the welding joint coefficient of the clamping sleeve (12) [ sigma ]] t The allowable stress of the clamping sleeve (12).
9. Three-way prosthetic device according to claim 1, characterized in that the material of the snap-on sleeve (12) is identical to the material of the three-way (2) to be prosthetic and in that the wall thickness of the snap-on sleeve (12) is δ, wherein,
is the weld coefficient of the clamping sleeve, F is the strength design coefficient of the clamping sleeve, t is the temperature reduction coefficient of the clamping sleeve, sigma s For the minimum yield strength of the snap-fit sleeve, p is the design pressure of the pipe, and D is the outside diameter of the snap-fit sleeve.
10. The three-way prosthetic device according to claim 5, characterized in that the maximum distance between two adjacent connecting holes (1231) on the flanging (123) is
Wherein d is B Is the nominal diameter of the bolt, delta f Is the effective thickness of the flange (123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644316.9A CN114893644A (en) | 2022-06-08 | 2022-06-08 | Tee bend prosthetic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644316.9A CN114893644A (en) | 2022-06-08 | 2022-06-08 | Tee bend prosthetic devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114893644A true CN114893644A (en) | 2022-08-12 |
Family
ID=82727976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210644316.9A Pending CN114893644A (en) | 2022-06-08 | 2022-06-08 | Tee bend prosthetic devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114893644A (en) |
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|---|---|---|---|---|
| US20040237277A1 (en) * | 2001-10-05 | 2004-12-02 | Gregory Christopher Ian | Tee connection to a pipeline |
| CN103542214A (en) * | 2012-07-13 | 2014-01-29 | 中国石油天然气集团公司管材研究所 | Method for calculating wall thickness of large-aperture high-strength tee joints manufactured through hot drawing process for oil and gas delivery pipeline |
| CN204254114U (en) * | 2014-08-26 | 2015-04-08 | 中国石油天然气集团公司 | A kind of three-limb tube |
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