CN216912758U - Spacing fine-tuning of pipeline is to device - Google Patents

Abstract

The utility model relates to the technical field of steam pipeline construction, in particular to a pipeline limiting and fine-adjusting pairing device which comprises an annular clamp positioning pairing device, wherein the clamp positioning pairing device comprises an annular clamp and a positioning piece, the positioning piece is arranged on the annular clamp, the annular clamp is used for being clamped on a pipeline, and the positioning piece is used for pairing the pipeline and a pipe fitting to be paired and positioning the pipe fitting to be paired; this device clamps the pipeline outside earlier when using, treats the group with the setting element that the pipe fitting is fixed a position earlier to annular clamp, and the group of the pipeline of being convenient for is to, can solve the group of high alloy steel material's pipeline like this and to difficult problem.

Description

Spacing fine-tuning of pipeline is to device

Technical Field

The utility model relates to the technical field of steam pipeline construction, in particular to a pipeline limiting and fine-adjusting assembling device.

Background

In the steam pipeline construction operation, a plurality of pipelines need to be connected into a gathering pipeline in a welding mode, in the pipeline welding process, in order to ensure the welding quality of the pipelines, the mouth aligning quality of the pipelines is ensured firstly, the pipeline assembly is a process of positioning and welding pipe orifices of two pipe fittings, and the existing carbon steel pipelines and stainless steel pipelines are assembled by adopting steel plates and bolts made of the same material and directly welding jackscrews on the pipelines; the existing steam pipeline of the company is made of high alloy steel (SA335P91), the pipeline is heavy, the welding amount is large, and the high alloy steel pipeline is thick in wall thickness and high in heat sensitivity, so that the area of an affected area is large, the assembly is difficult, and the welding difficulty is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pipeline limiting and fine-adjusting pairing device which can solve the problem of pairing of high alloy steel pipelines and is convenient for welding pairing of high alloy steel pipelines.

The technical scheme of the utility model is realized as follows:

the utility model provides a spacing fine tuning of pipeline is to device, includes annular clamp location group to the ware, clamp location group includes annular clamp and setting element to the ware, the setting element set up in on the annular clamp, the annular clamp is used for clamping on the pipeline, the setting element is used for the pipeline with treat that the group is to the time of the pipe fitting is organized, and right treat that the group is to the pipe fitting advance line location.

Further, the pipeline limiting and fine-adjusting assembly device further comprises a weld opening assembly, and the weld opening assembly is used for connecting the pipeline and the pipe fitting to be assembled.

After the annular clamp is installed on the pipeline, weld a plurality of crater group subassemblies in the groove department of pipeline uniformly, then treat through a plurality of setting elements and carry out spacing fine tuning and location to the pipe fitting to the group, this operating procedure is promptly: when the groove of the pipe fitting and the groove of the pipeline to be paired are located at proper positions, the groove of the pipeline corresponds to the groove of the pipe fitting to be paired, then the plurality of jackscrew bolts are adjusted to enable the pipe fitting to be abutted with the outer wall of the pipe fitting to be paired to achieve limiting and positioning, then the groove of the pipe fitting to be paired and the other side of the pipe fitting to be paired are welded, and then preliminary positioning welding of the pipe fitting and the pipe fitting to be paired is achieved.

Further, the pipeline limiting fine adjustment assembly device further comprises a supporting bracket, the supporting bracket comprises a supporting beam and a supporting frame, the supporting beam is arranged on the supporting frame, and the supporting beam is used for supporting the pipeline.

Furthermore, the support frame comprises two A-shaped frames and a connecting beam, and the connecting beam is arranged at the tops of the two A-shaped frames.

The number of the supporting frames is two.

Connecting the crossbeam and being connected with two A type framves, the support frame sets up to a plurality ofly, and preferred setting is two, these two support frame parallel arrangement, and supporting beam then sets up on two support frames, specifically sets up on two connecting the crossbeam on two support frames, supports supporting beam through two support frames, and supporting beam is preferred to use I-steel, the mounting means of I-steel: the two grooves of the I-shaped steel are respectively arranged upwards and downwards, and the upwards grooves can be convenient for installing the pipeline, so that the pipeline is clamped in the upwards grooves.

Because the pipe fitting to be assembled is also heavier, though the pipe fitting to be assembled can be lifted up through manpower, the manpower and the financial resources are consumed, preferably, the pipe fitting to be assembled is lifted up through a hoisting mechanism in a mechanical mode, the manpower and the time are saved, and the pipe fitting to be assembled is more convenient.

Further, the supporting beams are arranged on the two connecting beams.

Further, the annular clamp includes two semicircular clamps, two the one end of clamp is rotated through the pivot and is connected, the other end passes through connecting bolt and connects.

Should install in the groove department that is close to the pipeline during annular clamp installation, the pivot can choose for use supporting bolt and the nut of using moreover, perhaps chooses for use supporting round pin axle and split pin that uses, perhaps can choose for use the hinge to this rotation of the one end of realizing annular clamp.

When the annular clamp is actually assembled, the end of the annular clamp, which is positioned at the connecting bolt, is in an opening state, the annular clamp is sleeved outside the pipeline through the opening, the inner space after the two clamps are tightly clamped forms a circle and is just sleeved on the outer wall of the pipeline, and then the opening end of the annular clamp is connected by utilizing the connecting bolt, so that the fixed connection between the annular clamp and the pipeline is realized.

Further, the setting element includes fixed plate and jackscrew bolt, the one end of fixed plate with annular clamp connection, the other end of fixed plate be provided with jackscrew bolt assorted screw hole, the jackscrew bolt with the screw hole passes through threaded connection.

Further, the positioning piece is provided with a plurality of positioning pieces.

Further, the fixed plate is an arc-shaped steel plate.

Further, the supporting cross beam is I-shaped steel.

Further, the pipeline limiting fine adjustment assembling device further comprises a hoisting mechanism, and the hoisting mechanism is used for assembling and assembling the pipes and hoisting the pipes to be assembled.

Further, the hoisting mechanism comprises a door-shaped hanging frame, a hanging strip and a lifting device, the lifting device is arranged on the door-shaped hanging frame, the lifting device is connected with the hanging strip, and the hanging strip is used for connecting the pipe fittings to be assembled.

Further, the lifting device is an electric hoist, a chain block, a winch or an electric traction tensioner.

Furthermore, the weld crater assembly is a trapezoidal plate, and the weld crater assembly is arranged to be a plurality of.

Further, the pipeline treat the group to the pipe fitting annular clamp location group to the ware with weld bond group to the subassembly is the high alloy steel material.

Compared with the prior art, the utility model has the beneficial effects that:

this device clamps the pipeline outside earlier when using, treats the group with the setting element that the pipe fitting is fixed a position earlier to annular clamp, and the group of the pipeline of being convenient for is to, can solve the group of high alloy steel material's pipeline like this and to difficult problem.

Furtherly, treat through the setting element that the group has carried out spacing accurate and accurate location to the pipe fitting, rethread weld bond group subassembly in advance with the pipeline with treat that the group couples up pipe fitting fixed connection, can improve the precision that the welding was right effectively to can improve pipeline group effectively and to efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an overall structural schematic diagram of a pipe limit fine adjustment pairing device in actual construction in embodiment 1 of the present invention;

FIG. 2 is an enlarged view of the portion A shown in FIG. 1 in example 1 of the present invention;

FIG. 3 is a schematic side view of a positioning assembly device for a clip in embodiment 1 of the present invention;

fig. 4 is a schematic top view of the positioning assembly of the clip in embodiment 1 of the present invention;

fig. 5 is a schematic front view of a support frame in embodiment 1 of the present invention;

fig. 6 is a side view of the supporting frame in embodiment 1 of the utility model.

In the figure:

1-supporting a beam; 2-a support frame; 3, clamping a hoop; 4-a rotating shaft; 5-connecting bolts; 6-a positioning member; 7-a pipeline; 8-waiting for assembly of the pipe fittings; 21-A type frame; 22-a connecting beam; 61-fixing plate; 62-jackscrew bolts; 9-gantry type gantry; 10-a sling; 11-a lifting device; 12-a crater block assembly; 13-clamp positioning assembly device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example 1

Referring to fig. 1 to 6, fig. 1 is a schematic view of an overall structure of a pipe limiting fine adjustment assembly device in actual construction in the present embodiment; FIG. 2 is an enlarged view of the portion A shown in FIG. 1; FIG. 3 is a side view of the ring clamp of the present embodiment; FIG. 4 is a schematic top view of the ring clamp of the present embodiment; FIG. 5 is a schematic front view of the supporting frame of the present embodiment; fig. 6 is a schematic side view of the supporting frame in this embodiment, which provides a technical solution:

the utility model provides a spacing accurate adjustment of pipeline is to device, including annular clamp location group to ware 13, clamp location group is to ware 13 includes annular clamp and setting element 6, setting element 6 sets up on the annular clamp, pipeline 7 with treat that group is to pipe fitting 8 when the actual construction is organized, the annular clamp is used for clamping on pipeline 7, the annular clamp keeps fixed connection with pipeline 7, and setting element 6 is used for treating that group carries out spacing accurate adjustment and accurate location to pipe fitting 8, avoid organizing to the time, treat that group takes place the skew or rock to pipe fitting 8 self, and the welded precision is organized in the influence.

Annular clamp includes two semicircular clamps 3, the one end of these two clamps 3 is rotated through pivot 4 and is connected, the other end passes through connecting bolt 5 and connects, during the actual equipment, this one end that is in connecting bolt 5 on the annular clamp is the open mode, the annular clamp passes through this opening, make 3 suits of two clamps in the outside of pipeline 7, two clamps 3 close inner space behind the tight circle of formation and just establish the outer wall at pipeline 7, then utilize connecting bolt 5 to make the open end of annular clamp connect, realize annular clamp and pipeline 7's fixed connection with this.

It should be noted that, should install in the groove department that is close to pipeline 7 during the installation of annular clamp, the pivot 4 can choose for use supporting bolt and nut moreover, perhaps chooses for use supporting round pin axle and split pin, perhaps can choose for use the hinge to this rotation of the one end of realizing annular clamp.

The setting element 6 includes fixed plate 61 and jackscrew bolt 62, the one end and the annular clamp of fixed plate 61 are connected, and fixed plate 61 can be connected through the mode of welding or bolted connection with the annular clamp, the other end of fixed plate 61 be provided with jackscrew bolt 62 assorted screw hole, jackscrew bolt 62 is installed in this threaded hole, jackscrew bolt 62 passes through threaded connection with this screw hole, can realize the position of jackscrew bolt 62 in this threaded hole through screwing this jackscrew bolt 62 promptly, realize jackscrew bolt 62's position control.

The positioning elements 6 are arranged in a plurality of, generally not less than three, preferably four, since the inner space after the annular clamp is fastened forms a circle, and four positioning elements 6 are arranged on the annular clamp around the center of the circle.

The fixing plate 61 is preferably made of steel, has high strength and is convenient to weld, and the shape of the fixing plate is preferably arc-shaped, as shown in fig. 3.

The spacing accurate adjustment of pipeline is to device still includes weld crater group to subassembly 12, and weld crater group is to subassembly 12 be used for connecting tube 7 with treat that the group is to pipe fitting 8, after the annular clamp is installed on pipeline 7, welds a plurality of weld crater group to subassembly 12 uniformly in the slope department of pipeline 7, then treats through a plurality of setting elements 6 that the group carries out spacing accurate adjustment and location to pipe fitting 8, and this operating procedure is promptly: when the groove of the pipe fitting 8 and the groove of the pipeline 7 are in suitable positions to be treated, the groove of the pipeline 7 corresponds to the groove of the pipe fitting 8 to be treated, then the outer wall butt of the pipe fitting 8 to be treated is limited and positioned by adjusting the plurality of jackscrew bolts 62, then the groove of the pipe fitting 8 to be treated is welded with the other side of the plurality of welded junction group parts 12, then the preliminary positioning welding of the pipe fitting 8 to be treated is realized, trapezoidal plates are preferentially selected for the shape of the welded junction group parts 12, and particularly as shown in figure 2, after the preliminary positioning welding, then the welding line is formed by complete welding at the groove, and the pairing is realized.

The pipeline limiting fine adjustment assembly device further comprises a supporting bracket, the supporting bracket is used for supporting the pipeline 7 during construction, the supporting bracket comprises a supporting cross beam 1 and a supporting frame 2, the supporting cross beam 1 is arranged on the supporting frame 2, and the pipeline 7 is placed on the supporting cross beam 1.

As shown in fig. 5 and 6, the supporting frame 2 includes two a-shaped frames 21 and a connecting beam 22, the connecting beam 22 is disposed on the top of the two a-shaped frames 21, and the connecting beam 22 is connected with the two a-shaped frames 21, the supporting frames 2 are disposed in a plurality of, preferably two, the two supporting frames 2 are disposed in parallel, the supporting beam 1 is disposed on the two supporting frames 2, specifically on the two connecting beams 22 disposed on the two supporting frames 2, the supporting beam 1 is supported by the two supporting frames 2, the supporting beam 1 is preferably supported by i-shaped steel, and the mounting manner of the i-shaped steel is as follows: the two grooves of the I-steel are respectively arranged upwards and downwards, and the upwards groove can be convenient for installing the pipeline 7, so that the pipeline 7 is clamped in the upwards groove.

The device is assembled to spacing fine tuning of pipeline still includes hoisting machine and constructs, and hoisting machine constructs and is used for pipeline 7 and treats that 8 group of pipe fittings are to the welding time, will treat that the group is to hoist pipe fittings 8, because it is also heavier to treat group pipe fittings 8 self, though can also accomplish through the manpower and lift up it, relatively expends manpower financial resources, still preferably will treat through hoisting machine and carry out mechanical type to pipe fittings 8 and hoist, uses manpower sparingly and time, and is more convenient.

The hoisting mechanism comprises a door-shaped hanger 9, a hanging strip 10 and a lifting device 11, wherein the lifting device 11 is arranged on the door-shaped hanger 9, the lifting device 11 can be connected with the door-shaped hanger 9 in a rope binding or bolt connection mode, the lifting device 11 is simultaneously connected with the hanging strip 10, when the lifting device 11 lifts, the hanging strip 10 is connected with the pipe fitting 8 to be assembled, so that the pipe fitting 8 to be assembled is driven to lift, the groove of the pipe fitting 8 to be assembled is convenient to position, and the groove of the pipe fitting 8 is corresponding to the groove of the pipeline 7.

The lifting device 11 can be an electric hoist, a chain block, a winch or an electric traction tensioner, and the pipe fitting 8 to be assembled is lifted and positioned by using machinery instead of manpower, so that time and labor are saved.

It should be noted that the pipe 7, the pipe 8 to be assembled, the annular clamp positioning assembly device 13 and the weld bead assembly device 12 are all made of high alloy steel, and the device is mainly used for assembling the pipe 7 and the pipe 8 to be assembled which are made of high alloy steel, but can also be used for assembling pipes made of other materials, such as carbon steel pipes and stainless steel pipes.

The technical conditions and requirements of special attention required by the construction method of the pipeline limiting fine adjustment assembly device in actual construction are as follows:

1. adopt delta ═ 10 mm's band steel bending machine processing preparation to form during the annular clamp preparation in the ware 13 of clamp location group, the radian of annular clamp needs to satisfy pipeline 7 of group and treats the biggest external diameter to pipe fitting 8, two 3 symmetric distributions of clamp in the annular clamp, during processing annular clamp, trinity pivot 4 is connected to the one end of two clamps 3, one end sets up two connecting bolt 5 and closes tightly, the opening and shutting of semicircular clamp 3 can be realized to trinity pivot 4.

2. The fixing plate 61 in the clamp positioning assembly device 13 is formed by cutting and machining a steel plate with the thickness delta being 14mm, the specification is 50mm 180mm 14mm, the part connected with the clamp 3 is fixedly connected in a welding mode or in a bolt connection mode, and the part outside the clamp 3 is cut in an arc drawing mode according to the thickness 22mm 50 mm.

3. The jack bolt 62 in the clamp positioning assembly 13 is typically selected to be of the specification M24.

4. If the pivot 4 in the clamp location group is to selecting for use supporting round pin axle and split pin of using in the ware 13, the diameter of installing the pivot hole of this round pin axle on two clamps 3 can set up to 21.3mm can, and this round pin axle can adopt phi 20 mm's round steel processing to form, and pivot 4 embolias the downthehole back of pivot, forms trinity activity pivot.

5. Utilize connecting bolt 5 to close tight step of two clamps 3 to let annular clamp fastening, and pipeline 7 with treat the important link of the group of group to position of pipe fitting 8, the back that opens and shuts of annular clamp, embolia pipeline 7 and go into annular clamp in, the direction of adjusting makes setting element 6 be located the orientation treat to the one side of pipe fitting 8, treat the spacing fine tuning of group pipe fitting 8 and fix a position the back when utilizing jackscrew bolt 62, can be at jackscrew bolt 62 with treat to fill up the liner between the pipe fitting 8, fill up the purpose of liner: firstly, play the effect that the material was kept apart, secondly play at jackscrew bolt 62 with treat that the group can have certain antiskid effect when to the 8 butts of pipe fitting, avoid appearing the skew phenomenon.

6. The length of the I-steel that supporting beam 1 chose for use can be 3m, and 2H shaped steel and a 16# channel-section steel can be chooseed for use to A type frame 21, H250 can be chooseed for use to the specification of H shaped steel 250, and length is 1.5m and is suitable, two H shaped steel are as two support legs, the channel-section steel is used for connecting two support legs, the length of channel-section steel is decided according to the support distance between two support legs of A type frame 21, preferably 0.8m, the bottom of A type frame sets up supporting steel plate, as the backing plate, supporting steel plate for delta 20mm steel plate processing become 300mm bottom plate; in addition, the I-shaped steel can be provided with cross beam rib plates which are symmetrically distributed, 1 pair of cross beam rib plates are respectively arranged at the supporting positions, 1 pair of cross beam rib plates are arranged at the middle positions, 2 pairs of cross beam rib plates are respectively arranged at two sides of the middle positions, and the cross beam rib plates are used for improving the bearing strength.

7. A key link of the construction method is as follows: need process the crater group to the piece, its material is unanimous with 7 materials of pipeline of group, and crater group is to the piece preferred trapezoidal plate for improve the work efficiency and the precision of keeping a perfect match of mouth.

8. Two groups of support frames 2 are horizontally placed and adjusted by adopting a horizontal instrument, a bottom plate at the bottom of each support frame 2 is placed on a horizontal ground, pipelines 7 needing to be assembled are placed on two connecting cross beams 22 after leveling, a hoisting mechanism is arranged at an assembling section and comprises a door-shaped hoisting frame 9, a hoisting belt 10 and a lifting device 11, a hoop positioning assembler 13 is clamped at the position of a port between the pipeline 7 and a pipe fitting 8 to be assembled, before the pipe fitting 8 to be assembled is not pulled by the lifting device 11, a processed welded junction assembly 12 made of the same material is subjected to argon arc spot welding at a slope, a welded junction assembly 12 with spacing and spacing is fixed, (after the assembling is completed, the welded junction assembly 12 is ground, the spot welding position needs to be subjected to secondary polishing), a top thread bolt 62 of the hoop positioning assembler 13 is rotated, the pipe fitting 8 to be assembled is pulled under the action of the hoisting mechanism, and under the rotation action of the top thread bolt 62, the pipe 7 and the pipe fitting 8 to be assembled are positioned.

The construction method of the device is simple in process, simple in structure, easy to manufacture, strong in operability, low in labor intensity and high in assembly efficiency, solves the assembly problem of the high-alloy steel pipeline, greatly improves the assembly precision of the high-alloy steel pipeline, plays a very large role in the welding bead quality of the alloy steel pipeline, improves the labor efficiency, reduces the construction production cost, improves the welding quality of the high-alloy steel pipeline, provides thinking and technical guidance directions for assembly of pipelines made of special materials in future, and makes great contribution to construction of the pipelines.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a spacing fine tuning of pipeline is to device, its characterized in that, includes annular clamp location group to ware (13), clamp location group is to ware (13) including annular clamp and setting element (6), setting element (6) set up in on the annular clamp, the annular clamp is used for clamping on pipeline (7), setting element (6) are used for pipeline (7) are organized to time with treating group pipe fitting (8), and are right treat that the group is fixed a position pipe fitting (8).

2. Spacing fine tuning of pipeline to device of claim 1, characterized by, still includes crater group to the subassembly (12), crater group to the subassembly (12) is used for connecting the pipeline (7) with treat group to the pipe fitting (8).

3. The pipe spacing fine adjustment assembly device according to claim 1, further comprising a support bracket, wherein the support bracket comprises a support beam (1) and a support frame (2), the support beam (1) is arranged on the support frame (2), and the support beam (1) is used for supporting the pipe (7).

4. Pipe limit fine adjustment group pairing device according to claim 3, characterized in that the support frame (2) comprises two A-frames (21) and one connecting beam (22), the connecting beam (22) being arranged on top of both A-frames (21).

5. Pipe spacing fine adjustment assembly device according to claim 4, characterized in that the support frames (2) are provided in two and the support beams (1) are provided on two of the connecting beams (22).

6. The assembly device for limiting and fine-adjusting the position of the pipeline according to claim 1, wherein the annular clamping hoop comprises two semicircular clamping hoops (3), one ends of the two clamping hoops (3) are rotatably connected through a rotating shaft (4), and the other ends of the two clamping hoops are connected through a connecting bolt (5).

7. The assembly device for limiting and fine-adjusting the pipeline according to claim 1, wherein the positioning member (6) comprises a fixing plate (61) and a jackscrew bolt (62), one end of the fixing plate (61) is connected with the annular clamp, the other end of the fixing plate (61) is provided with a threaded hole matched with the jackscrew bolt (62), and the jackscrew bolt (62) is in threaded connection with the threaded hole.

8. The pipe limiting fine adjustment assembly device according to claim 1, further comprising a hoisting mechanism, wherein the hoisting mechanism is used for hoisting the pipe fitting (8) to be assembled when assembling.

9. The pipe limiting fine adjustment assembling device according to claim 8, wherein the hoisting mechanism comprises a gantry hanger (9), a hanging strip (10) and a lifting device (11), the lifting device (11) is arranged on the gantry hanger (9), the lifting device (11) is connected with the hanging strip (10), and the hanging strip (10) is used for connecting the pipe (8) to be assembled.

10. The pipe spacing fine adjustment assembly device according to claim 9, wherein the lifting device (11) is an electric block, a chain block, a winch or an electric traction tensioner.

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