CN113513631B - Pressure pipeline of gas engineering and laying method thereof - Google Patents
Pressure pipeline of gas engineering and laying method thereof Download PDFInfo
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- CN113513631B CN113513631B CN202110500600.4A CN202110500600A CN113513631B CN 113513631 B CN113513631 B CN 113513631B CN 202110500600 A CN202110500600 A CN 202110500600A CN 113513631 B CN113513631 B CN 113513631B
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- positioning
- pressure pipeline
- gear
- flange plate
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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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/02—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
Abstract
The invention discloses a pressure pipeline of a gas engineering and a laying method thereof, belonging to the technical field of gas pressure pipelines, wherein the pressure pipeline comprises a pipe body and a connector, the pipe body comprises a first pipe body and a second pipe body, the connector comprises a first flange plate, a second flange plate, a bolt and a positioning cylinder, the first flange plate is fixed at the port of the first flange plate, the second flange plate is fixed at the port of the second flange plate, and the first flange plate and the second flange plate are connected through the bolt; the positioning cylinder is sleeved on the surface of the first pipe body and fixed with the first pipe body and the first flange plate, a positioning groove is formed in the positioning cylinder, a positioning column matched with the positioning groove is fixed on the second flange plate, and the positioning column is used for being inserted into the positioning groove. The paving method comprises the following steps: s1, excavating a pipe trench; s2, mounting a support frame; s3, connecting pipelines; s4, heat preservation treatment and backfilling. The invention has the advantages of convenient butt joint and better laying stability.
Description
Technical Field
The invention relates to the technical field of gas pressure pipelines, in particular to a pressure pipeline of gas engineering and a laying method thereof.
Background
Pressure pipes are understood in a broad sense to mean all pipes which are subjected to an internal or external pressure, irrespective of the medium in the pipe. Pressure pipes are part of pipes for transporting, distributing, mixing, separating, discharging, metering, controlling and stopping the flow of fluids, and are assembled assemblies of pipes, tubes, flanges, bolted connections, gaskets, valves, other components or pressure parts and supports.
Gas engineering generally refers to a huge engineering for the development and exploitation of natural gas based on the principle of combining underground and ground, development and process, technology and economy. The natural gas is a low-carbon-content colorless mixed gas rich in alkane, and can become green and environment-friendly clean energy through simple processing treatment.
Pipeline under pressure is often used in the gas engineering construction, at present in pipeline under pressure interconnect, each section pipeline under pressure is generally through the flange connection, however the flange is usually through the bolt with the pipeline under pressure of both sides connection, therefore among the bolt fastening process, the mounting hole of adjacent pipeline under pressure need align, so that the bolt inserts, however, the mounting hole on the flange generally can set up a plurality ofly, consequently, each mounting hole is difficult for aligning and makes pipeline position skew take place easily at the in-process of fastening, lead to the pipeline mouth of both sides can not dock completely, it is comparatively inconvenient to install. In addition, the traditional pressure pipeline is directly paved in a pipe ditch, and because the soil on two sides of the pressure pipeline is backfill soil and is loose, the pressure pipeline cannot be stably arranged in the pipe ditch, the pressure pipeline is easy to deviate due to trampling and the like, and the maintenance frequency and the maintenance cost are increased.
In view of this, the present invention provides a pressure pipeline for gas engineering and a laying method thereof.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a pressure pipeline of a gas engineering and a laying method thereof, and the pressure pipeline has the advantages of convenience in butt joint and good laying stability.
In order to achieve the purpose, the invention provides the following technical scheme:
a laying method of a pressure pipeline of a gas project comprises the following steps:
s1, pipe trench excavation
Determining the excavation depth of the pressure pipeline, excavating a pipe trench according to the installation position marked after the pressure pipeline is measured in advance, and tamping the pipe trench;
s2, mounting of a support frame
Placing and fixing a support frame in the pipe ditch, and then placing the pressure pipeline on the support frame in the pipe ditch so that the pressure pipeline is supported and fixed by the support frame;
s3, connecting pipelines
Cleaning the outer side surfaces and the butt joint ports of the pressure pipelines, then butting the adjacent pressure pipelines, and fixing the pressure pipelines through bolts;
s4, heat preservation treatment and backfilling
And after the pipeline connection is finished, wrapping the outer surface of the pressure pipeline with an insulating layer, then installing a protective cover plate and backfilling.
More preferably: the supporting frame comprises an upright post, a base, a supporting seat, an inserting plate, a protecting sleeve, a driving mechanism and a driven mechanism;
the protection sleeve is fixed on the surface of the pressure pipeline, the base, the upright post and the supporting seat are sequentially and fixedly connected from bottom to top, the supporting seat comprises a supporting part and abutting parts arranged on two opposite sides of the supporting part, the driving mechanism and the driven mechanism are both arranged on the supporting part, and the supporting part is used for being supported at the bottom of the pressure pipeline;
the pressure pipeline is arranged in the supporting part process, the driving mechanism drives the driven mechanism to upwards push the inserting plate, so that the inserting plate is inserted between the protective sleeve and the abutting part.
More preferably: the driving mechanism comprises a positioning rod, a rack and a supporting spring;
the surface of the protective sleeve is provided with a limiting groove matched with the positioning rod, a cavity is formed in the supporting part, the lower end of the positioning rod is fixed with the rack, the upper end of the positioning rod upwards penetrates through the top of the cavity and extends to the position above the supporting part, and the upper end of the positioning rod is inserted into the limiting groove;
the rack and the supporting spring are both positioned in the cavity, the upper end of the rack is fixed with the lower end of the positioning rod, the lower end of the rack is connected with the supporting spring, and the supporting spring is tightly propped between the rack and the bottom in the cavity.
More preferably: the driven mechanism comprises a first gear, a first rotating shaft, a second gear, a second rotating shaft and a push plate;
the second gear is positioned between the first gear and the rack, the second gear is respectively meshed with the first gear and the rack, the first rotating shaft penetrates through the middle part of the first gear and is fixed with the first gear, two ends of the first rotating shaft are respectively inserted on the side walls at two opposite sides of the cavity, the second rotating shaft penetrates through the middle part of the second gear and is fixed with the second gear, two ends of the second rotating shaft are respectively inserted on the side walls at two opposite sides of the cavity, and the first rotating shaft and the second rotating shaft are arranged in parallel;
the cavity is provided with a slot along the radial direction of the pressure pipeline, the push plate is positioned in the cavity and the slot and is in sliding fit with the cavity and the side wall of the slot along the radial direction of the pressure pipeline, the push plate is positioned above the first gear, the bottom surface of the push plate is provided with a tooth surface, and the tooth surface is meshed with the first gear;
the push plate is used for pushing the inserting plate to be upwards inserted between the protecting sleeve and the abutting portion, so that the pressure pipeline is limited and fixed through the inserting plate and the abutting portion.
More preferably: the driven mechanisms are two and are respectively positioned on two opposite sides of the rack, and a connecting spring is fixed between two push plates of the two driven mechanisms.
More preferably: push pedal one end with coupling spring is fixed, and the other end is the inclined plane, the inclined plane is from top to bottom to keeping away from the coupling spring direction slope, the picture peg lower extreme passes the supporting part just extends in the slot, the picture peg lower extreme be provided with be used for with the inclined plane of push pedal inclined plane contact, the picture peg upper end is provided with arc portion.
A pressure pipeline of a gas engineering comprises a pipe body and a connector, wherein the pipe body comprises a first pipe body and a second pipe body, the connector comprises a first flange plate, a second flange plate, a bolt and a positioning cylinder, the first flange plate is fixed at the port of the first pipe body, the second flange plate is fixed at the port of the second pipe body, and the first flange plate is connected with the second flange plate through the bolt;
the positioning cylinder is sleeved on the surface of the first pipe body and fixed with the first pipe body and the first flange plate, a positioning groove is formed in the positioning cylinder, a positioning column matched with the positioning groove is fixed on the second flange plate, and the positioning column is used for being inserted into the positioning groove.
More preferably: the connector also comprises a locking mechanism, and the locking mechanism comprises a positioning bead, a mounting groove, a buffer spring and a positioning hole;
the mounting groove is seted up at the constant head tank lateral part, buffer spring is located in the mounting groove and one end with the location pearl is fixed, the other end with the bottom is fixed in the mounting groove, the locating hole is seted up the reference column surface, the location pearl with locating hole looks adaptation, the location pearl is used for passing the mounting groove notch just inserts in the locating hole, so that the reference column is spacing in the constant head tank.
More preferably: the constant head tank is provided with a plurality ofly, and is a plurality of the constant head tank is followed first body circumferencial direction equipartition sets up, the reference column is provided with a plurality ofly, and is a plurality of the reference column is with a plurality of the constant head tank position one-to-one.
More preferably: the first pipe body is provided with a protective sleeve, and the protective sleeve is used for being sleeved on the positioning cylinder.
In conclusion, the invention has the following beneficial effects: in order to solve the problem that positioning and butt joint are inconvenient in the process of connecting adjacent pressure pipelines, the invention provides a novel pressure pipeline for gas engineering. When adjacent pipeline is connected, aim at the constant head tank with the reference column earlier, then insert the constant head tank with the reference column, the locating hole on the reference column this moment just corresponds with the notch of mounting groove, under the buffer spring effect, in the locating hole will be gone into to the location pearl to make the spacing fixing of reference column in the constant head tank. After the locating column is fixed in the locating groove in a limiting mode, the first flange plate and the second flange plate are just in close contact, the mounting holes in the first flange plate and the second flange plate are also just in one-to-one correspondence, and finally the first flange plate and the second flange plate are locked through the bolts. The invention adopts the mode of positioning first and then locking, and is simple and convenient to use.
In the process of laying the pressure pipeline, the support frame is firstly fixed in the pipe ditch so as to ensure that the support frame is stably fixed at the bottom of the pipe ditch, and then the pressure pipeline is limited and fixed on the support frame, so that the laying stability of the pressure pipeline is improved. After the inserting plate is inserted between the protecting sleeve and the abutting part, a gap between the protecting sleeve and the abutting part can be filled up so as to carry out better limiting and fixing on the pressure pipeline.
Drawings
FIG. 1 is a schematic sectional view of an embodiment, which is mainly used for embodying a matching structure between a pressure pipeline and a support frame;
FIG. 2 is a schematic sectional view of the embodiment, which is mainly used for embodying a matching structure between the pressure pipeline and the support frame;
FIG. 3 is a partial schematic view of an embodiment, primarily for embodying the connection structure between adjacent pipes;
FIG. 4 is a schematic structural diagram of an embodiment, which is mainly used for embodying the structure of a fixed cylinder;
FIG. 5 is a schematic structural diagram of the embodiment, which is mainly used for embodying the structure of the first flange plate;
FIG. 6 is a schematic structural diagram of the embodiment, which is mainly used for embodying the structure of the second flange plate;
fig. 7 is a schematic partial cross-sectional view of an embodiment, primarily for embodying the structure of the locking mechanism.
In the figure, 1, a column; 2. a base; 3. a supporting seat; 31. a support portion; 32. a tightening part; 4. a cavity; 5. inserting plates; 6. a protective sleeve; 7. a tube body; 71. a first pipe body; 72. a second tube body; 731. a first flange plate; 732. a second flange plate; 733. a bolt; 734. a positioning cylinder; 735. a positioning column; 736. positioning a groove; 7371. positioning the beads; 7372. mounting grooves; 7373. a buffer spring; 7374. positioning holes; 738. mounting holes; 8. a driven mechanism; 81. a first gear; 82. a first rotating shaft; 83. a second gear; 84. a second rotating shaft; 85. pushing the plate; 9. a drive mechanism; 91. positioning a rod; 92. a rack; 93. a support spring; 10. a slot; 11. a connecting spring; 12. a transverse chute; 13. an arcuate portion; 14. and (6) a protective sleeve.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The embodiment is as follows: a pressure pipeline for gas engineering and a laying method thereof are disclosed, as shown in figures 1-7, the pressure pipeline comprises a pipe body 7 and a connector, and the pipe body 7 comprises a first pipe body 71 and a second pipe body 72. The connector comprises a first flange 731, a second flange 732, a bolt 733, a locking mechanism and a positioning cylinder 734, wherein the first flange 731 is integrally connected to a port of the first pipe body 71, and the second flange 732 is integrally connected to a port of the second pipe body 72. The first flange plate 731 and the second flange plate 732 are connected by bolts 733. The positioning tube 734 is sleeved on the surface of the first tube 71 and fixed with the first tube 71 and the first flange 731, the positioning tube 734 is provided with a positioning slot 736, and the positioning slot 736 passes through the first flange 731 along the thickness direction of the first flange 731. A positioning column 735 matched with the positioning groove 736 is fixed on one side of the second flange 732 away from the second tube 72, and the positioning column 735 is used for penetrating through the first flange 731 and then being inserted into the positioning groove 736. The first flange plate 731 and the second flange plate 732 are both provided with mounting holes 738 for mounting bolts 733.
Referring to fig. 1 to 7, the positioning grooves 736 are provided in plural numbers, the positioning grooves 736 are uniformly distributed along the circumferential direction of the first tube 71, the positioning columns 735 are provided in plural numbers, and the positioning columns 735 correspond to the positioning grooves 736 in one-to-one manner. The locking mechanism includes a positioning ball 7371, a mounting groove 7372, a buffer spring 7373 and a positioning hole 7374. Mounting groove 7372 is seted up at the constant head tank 736 lateral part, and buffer spring 7373 is located mounting groove 7372 and one end is fixed with location pearl 7371, and the other end is fixed with the bottom in the mounting groove 7372. The notch of the mounting groove 7372 is provided with a circle of limiting ring for limiting the outward separation of the positioning bead 7371 from the mounting groove 7372, and the positioning bead 7371 is provided with a protruding portion for contacting with the inner side of the limiting ring. Locating hole 7374 sets up at reference column 735 outer surface, and location pearl 7371 and locating hole 7374 looks adaptation, and location pearl 7371 is hemispherical and outer cambered surface towards constant head tank 736, and location pearl 7371 is used for passing mounting groove 7372 notch and inserts in locating hole 7374 to make reference column 735 spacing in constant head tank 736. The first tube 71 is provided with a protective sleeve 14, and the protective sleeve 14 is disposed on the positioning tube 734 to seal the positioning slot 736.
In the technical scheme, in the interconnection of pressure pipelines, at present, each section of pressure pipeline is generally connected by a flange plate, however, the flange plate usually connects the pressure pipelines on two sides by a bolt 733, so that in the fastening process of the bolt 733, the mounting holes 738 of adjacent pressure pipelines need to be aligned so as to facilitate the insertion of the bolt 733, however, a plurality of mounting holes 738 on the flange plate are generally arranged, so that the mounting holes 738 are not easily aligned, and the pipeline ports on two sides cannot be completely butted and are inconvenient to install due to the fact that the pipeline positions are easily deviated in the fastening process, and in order to solve the problem that in the connection process of adjacent pressure pipelines, the positioning and butting are inconvenient, the invention provides a novel pressure pipeline for gas engineering. When adjacent pipeline is connected, aim at constant head tank 736 with reference column 735 earlier, then insert the constant head tank 736 with reference column 735, locating hole 7374 on the reference column 735 is just corresponding with the notch of mounting groove 7372 this moment, and under buffer spring 7373 effect, location pearl 7371 will be gone into in the locating hole 7374 to make the spacing fixing of reference column 735 in constant head tank 736. After the positioning column 735 is limited and fixed in the positioning groove 736, the first flange plate 731 and the second flange plate 732 are just in close contact, the mounting holes 738 on the first flange plate 731 and the second flange plate 732 are also just in one-to-one correspondence, and finally the locking is performed through the bolts 733. The invention adopts the mode of positioning first and then locking, and is simple and convenient to use.
Referring to fig. 1 to 7, a method for laying a pressure pipe in a gas engineering includes the steps of:
s1, pipe ditch excavation
Determining the excavation depth according to the size of the pressure pipeline and the geological condition of the environment, excavating a pipe trench according to the installation position marked after the pressure pipeline is measured in advance, and tamping the pipe trench;
s2, mounting of a support frame
Placing and fixing the support frame in the pipe ditch, and then placing the pressure pipeline on the support frame in the pipe ditch so as to support and fix the pressure pipeline through the support frame; preferably, the support frame is fixed in the pipe trench by embedding or by a fastener (an expansion bolt 733 or the like);
s3, connecting pipelines
Cleaning solid impurities such as soil and stones on the outer side surface and the butt joint port of the pressure pipeline, then butting adjacent pressure pipelines and fixing the pressure pipelines through bolts 733; in order to stably install the pressure pipelines, preferably, at least one supporting frame is arranged on each pressure pipeline; the number and distance of the support frames on each pressure pipeline are determined according to specific conditions, and are not particularly limited, so long as the requirement on the stability of the installation of the pressure pipelines can be met;
s4, heat preservation treatment and backfilling
After the pipeline connection is finished, the outer surface of the pressure pipeline is wrapped with an insulating layer, then a protective cover plate is installed above the pipeline, and soil is backfilled.
In the technical scheme, the traditional pressure pipeline is directly paved in the pipe trench, and because the soil on two sides of the pressure pipeline is the backfill soil and the soil is loose, the pressure pipeline can not be stably arranged in the pipe trench, the pressure pipeline is easy to deviate due to trampling and the like, and the maintenance times and the cost are increased. In order to overcome the defects, in the process of laying the pressure pipeline, the support frame is firstly fixed in the pipe ditch so as to be stably fixed at the bottom of the pipe ditch, and then the pressure pipeline is limited and fixed on the support frame, so that the laying stability of the pressure pipeline is improved.
Referring to fig. 1-7, the support frame comprises a column 1, a base 2, a support base 3, an insert plate 5, a protective sleeve 6, a driving mechanism 9 and a driven mechanism 8. The protection sleeve 6 is fixed on the surface of the pressure pipeline and made of rubber or plastics, and the base 2, the upright post 1 and the supporting seat 3 are sequentially and fixedly connected from bottom to top. The supporting seat 3 comprises a supporting portion 31 and abutting portions 32 arranged on two opposite sides of the supporting portion 31, and in the laying process of the pressure pipeline, the pressure pipeline is arranged between the supporting portion 31 and the abutting portions 32 on two sides so as to be limited and fixed through the supporting portion 31 and the abutting portions 32 on two sides. The driving mechanism 9 and the driven mechanism 8 are both mounted on a support 31, the support 31 being intended to be supported at the bottom of the pressure conduit. When the pressure pipeline is arranged on the supporting portion 31, the driving mechanism 9 drives the driven mechanism 8 to push the inserting plate 5 upwards, so that the inserting plate 5 is inserted between the protecting sleeve 6 and the abutting portion 32.
Referring to fig. 1 to 7, preferably, the driving mechanism 9 includes a positioning rod 91, a rack 92, and a support spring 93. The surface of the protecting sleeve 6 is provided with a limiting groove matched with the positioning rod 91, and the limiting groove is located below the pressure pipeline. A cavity 4 is formed in the supporting portion 31, the lower end of the positioning rod 91 is fixed with the rack 92, the upper end of the positioning rod upwards penetrates through the top of the cavity 4 and extends to the upper portion of the supporting portion 31, and the upper end of the positioning rod 91 is inserted into the limiting groove to limit the pressure pipeline to move front and back and left and right. The rack 92 and the supporting spring 93 are both positioned in the cavity 4, the upper end of the rack 92 is fixed with the lower end of the positioning rod 91, the lower end of the rack 92 is connected with the supporting spring 93, and the supporting spring 93 is tightly propped between the rack 92 and the bottom in the cavity 4.
Referring to fig. 1-7, the driven mechanism 8 preferably includes a first gear 81, a first shaft 82, a second gear 83, a second shaft 84, and a push plate 85. The first gear 81, the first rotating shaft 82, the second gear 83 and the second rotating shaft 84 are all located in the cavity 4, the second gear 83 is located between the first gear 81 and the rack 92, and the second gear 83 is meshed with the first gear 81 and the rack 92 respectively. The first rotating shaft 82 penetrates through the middle of the first gear 81 and is fixed with the first gear 81, and two ends of the first rotating shaft 82 are respectively inserted into the side walls on two opposite sides of the cavity 4. The second rotating shaft 84 penetrates through the middle of the second gear 83 and is fixed with the second gear 83, and two ends of the second rotating shaft 84 are respectively inserted into the side walls on two opposite sides of the cavity 4. The first and second rotating shafts 82 and 84 are at the same level and are arranged in parallel.
Referring to fig. 1 to 7, the cavity 4 is provided with a slot 10 along the radial direction of the pressure conduit, and the push plate 85 is located in the cavity 4 and the slot 10 and is in sliding fit with the sidewalls of the cavity 4 and the slot 10 along the radial direction of the pressure conduit. Specifically, the cavity 4 and the side wall of the slot 10 are both provided with a transverse sliding groove 12, and the push plate 85 is inserted in the transverse sliding groove 12 and is in sliding fit with the transverse sliding groove 12. The push plate 85 is positioned outside the rack 92 and above the first gear 81, and the bottom surface of the push plate 85 is provided with a tooth surface which is meshed with the first gear 81. The push plate 85 is used for pushing the insert plate 5 to be inserted upwards between the protecting sleeve 6 and the abutting portion 32, so that the pressure pipeline is limited and fixed through the insert plate 5 and the abutting portion 32.
Referring to fig. 1-7, two driven mechanisms 8 are provided, two driven mechanisms 8 are respectively located at two opposite sides of the rack 92, and a connecting spring 11 is fixed between two push plates 85 of the two driven mechanisms 8. The connecting spring 11 is located on one side of the positioning rod 91, and the two push plates 85 of the two driven mechanisms 8 are respectively located on two opposite sides of the positioning rod 91. One end of the push plate 85 is fixed with the connecting spring 11, and the other end is an inclined plane which is inclined from top to bottom in the direction away from the connecting spring 11. The inserting plate 5 is in up-and-down sliding fit with the abutting part 32, the lower end of the inserting plate 5 penetrates through the supporting part 31 and extends into the slot 10, the lower end of the inserting plate 5 is provided with an inclined surface used for being in contact with the inclined surface of the push plate 85, and the inclined surface have the same inclination direction and angle, so that the lower end of the inserting plate 5 is in surface-to-surface contact with the end surface of the push plate 85. The upper end of the inserting plate 5 is provided with an arc-shaped part 13, and the arc-shaped part 13 is positioned at one side of the inserting plate 5 close to the protecting sleeve 6, so that the inserting plate 5 is smoothly inserted between the protecting sleeve 6 and the abutting part 32.
In the above technical scheme, in order to reduce the damage of the support frame to the pressure pipeline, the protection sleeve 6 is arranged on the pressure pipeline, and during installation, only the limiting groove on the protection sleeve 6 needs to be aligned with the positioning rod 91, and then the pressure pipeline is arranged on the support part 31. When the pressure pipe is placed on the supporting portion 31, the positioning rod 91 and the protruding strip will move downward, because the second gear 83 is located between the first gear 81 and the rack 92, and the second gear 83 is respectively engaged with the first gear 81 and the rack 92, and the first gear 81 is engaged with the push plate 85, the protruding strip will move downward, the first gear 81 will drive the push plate 85 to move in the direction away from the connecting spring 11, and because the inserting plate 5 is in inclined plane fit with the push plate 85, the inserting plate 5 is in up-and-down sliding fit with the abutting portion 32, and therefore, in the moving process of the push plate 85 in the direction away from the connecting spring 11, the inserting plate 5 will move upward, and thus is inserted between the protecting cover 6 and the abutting portion 32. After the inserting plate 5 is inserted between the protecting sleeve 6 and the abutting part 32, a gap between the protecting sleeve 6 and the abutting part 32 can be filled, so that the pressure pipeline can be better limited and fixed.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that several improvements and modifications within the scope of the present invention can be made by those skilled in the art without departing from the principle of the present invention, and these improvements and modifications should also be construed as the scope of the present invention.
Claims (7)
1. A laying method of a pressure pipeline of a gas project is characterized in that: the method comprises the following steps:
s1, pipe trench excavation
Determining the excavation depth of the pressure pipeline, excavating a pipe trench according to the installation position marked after the pressure pipeline is measured in advance, and tamping the pipe trench;
s2, mounting of a support frame
Placing and fixing a support frame in the pipe ditch, and then placing the pressure pipeline on the support frame in the pipe ditch so that the pressure pipeline is supported and fixed by the support frame;
s3, connecting pipelines
Cleaning the outer side surface and the butt joint port of the pressure pipeline, then butting the adjacent pressure pipelines, and fixing the adjacent pressure pipelines through bolts (733);
s4, heat preservation treatment and backfilling
After the pipeline connection is finished, wrapping an insulating layer on the outer surface of the pressure pipeline, then installing a protective cover plate and backfilling;
the support frame comprises a stand column (1), a base (2), a support seat (3), an inserting plate (5), a protective sleeve (6), a driving mechanism (9) and a driven mechanism (8);
the protection sleeve (6) is fixed on the surface of the pressure pipeline, the base (2), the upright column (1) and the supporting seat (3) are sequentially and fixedly connected from bottom to top, the supporting seat (3) comprises a supporting part (31) and abutting parts (32) arranged on two opposite sides of the supporting part (31), the driving mechanism (9) and the driven mechanism (8) are both arranged on the supporting part (31), and the supporting part (31) is used for supporting the bottom of the pressure pipeline;
when the pressure pipeline is arranged on the supporting part (31), the driving mechanism (9) drives the driven mechanism (8) to push the inserting plate (5) upwards, so that the inserting plate (5) is inserted between the protecting sleeve (6) and the abutting part (32);
the driving mechanism (9) comprises a positioning rod (91), a rack (92) and a supporting spring (93);
a limiting groove matched with the positioning rod (91) is formed in the surface of the protective sleeve (6), a cavity (4) is formed in the supporting part (31), the lower end of the positioning rod (91) is fixed with the rack (92), the upper end of the positioning rod upwards penetrates through the top of the cavity (4) and extends to the upper side of the supporting part (31), and the upper end of the positioning rod (91) is inserted into the limiting groove;
the rack (92) and the supporting spring (93) are both positioned in the cavity (4), the upper end of the rack (92) is fixed with the lower end of the positioning rod (91), the lower end of the rack is connected with the supporting spring (93), and the supporting spring (93) is tightly propped against the space between the rack (92) and the inner bottom of the cavity (4);
the driven mechanism (8) comprises a first gear (81), a first rotating shaft (82), a second gear (83), a second rotating shaft (84) and a push plate (85);
the second gear (83) is located between the first gear (81) and the rack (92), the second gear (83) is respectively meshed with the first gear (81) and the rack (92), the first rotating shaft (82) penetrates through the middle of the first gear (81) and is fixed with the first gear (81), two ends of the first rotating shaft (82) are respectively inserted into the side walls on two opposite sides of the cavity (4), the second rotating shaft (84) penetrates through the middle of the second gear (83) and is fixed with the second gear (83), two ends of the second rotating shaft (84) are respectively inserted into the side walls on two opposite sides of the cavity (4), and the first rotating shaft (82) and the second rotating shaft (84) are arranged in parallel;
a slot (10) is formed in the cavity (4) along the radial direction of the pressure pipeline, the push plate (85) is positioned in the cavity (4) and the slot (10) and is in sliding fit with the side walls of the cavity (4) and the slot (10) along the radial direction of the pressure pipeline, the push plate (85) is positioned above the first gear (81), a tooth surface is arranged on the bottom surface of the push plate (85), and the tooth surface is meshed with the first gear (81);
the push plate (85) is used for pushing the inserting plate (5) to be inserted upwards between the protecting sleeve (6) and the abutting part (32) so that the pressure pipeline is limited and fixed through the inserting plate (5) and the abutting part (32); one end of the push plate (85) is provided with an inclined plane, and the lower end of the inserting plate (5) is provided with an inclined plane used for contacting with the inclined plane of the push plate (85).
2. The method for laying a pressure pipe in a gas engineering according to claim 1, characterized in that: the two driven mechanisms (8) are arranged, the two driven mechanisms (8) are respectively positioned at two opposite sides of the rack (92), and a connecting spring (11) is fixed between two push plates (85) of the two driven mechanisms (8).
3. The method for laying a pressure pipe in a gas engineering according to claim 2, characterized in that: push pedal (85) one end with coupling spring (11) are fixed, and the other end is the inclined plane, the inclined plane is from top to bottom to keeping away from coupling spring (11) direction slope, picture peg (5) lower extreme passes supporting part (31) and extension are in slot (10), picture peg (5) lower extreme be provided with be used for with the inclined plane of push pedal (85) inclined plane contact, picture peg (5) upper end is provided with arc portion (13).
4. A pressure pipe using the method of laying a pressure pipe for a gas project according to any one of claims 1 to 3, characterized in that: the pipe comprises a pipe body (7) and a connector, wherein the pipe body (7) comprises a first pipe body (71) and a second pipe body (72), the connector comprises a first flange plate (731), a second flange plate (732), a bolt (733) and a positioning cylinder (734), the first flange plate (731) is fixed at the port of the first pipe body (71), the second flange plate (732) is fixed at the port of the second pipe body (72), and the first flange plate (731) and the second flange plate (732) are connected through the bolt (733);
the positioning tube (734) is sleeved on the surface of the first tube body (71) and fixed with the first tube body (71) and the first flange plate (731), a positioning groove (736) is formed in the positioning tube (734), a positioning column (735) matched with the positioning groove (736) is fixed on the second flange plate (732), and the positioning column (735) is used for being inserted into the positioning groove (736).
5. Pressure conduit according to claim 4, wherein: the connector also comprises a locking mechanism, wherein the locking mechanism comprises a positioning bead (7371), a mounting groove (7372), a buffer spring (7373) and a positioning hole (7374);
establish in constant head tank (736) lateral part mounting groove (7372), buffer spring (7373) are located in mounting groove (7372) and one end with location pearl (7371) is fixed, the other end with bottom fixed in mounting groove (7372), locating hole (7374) are seted up reference column (735) surface, location pearl (7371) with locating hole (7374) looks adaptation, location pearl (7371) are used for passing mounting groove (7372) notch just inserts in locating hole (7374), so that reference column (735) is spacing in constant head tank (736).
6. Pressure conduit according to claim 5, characterized in that: the constant head tank (736) is provided with a plurality ofly, and is a plurality of constant head tank (736) are followed first body (71) circumferencial direction equipartition sets up, reference column (735) is provided with a plurality ofly, a plurality of reference column (735) and a plurality of constant head tank (736) position one-to-one.
7. Pressure conduit according to claim 6, wherein: be provided with protective sheath (14) on first body (71), protective sheath (14) are used for the cover to establish on location section of thick bamboo (734).
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| CN202110500600.4A CN113513631B (en) | 2021-05-08 | 2021-05-08 | Pressure pipeline of gas engineering and laying method thereof |
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