Pipeline connecting device for water conservancy project

Abstract

The utility model relates to the technical field of pipe connecting pieces, in particular to a pipeline connecting device for water conservancy projects, which comprises a metal pipe sleeve, the metal pipe sleeve is sleeved at the welding position of two water conservancy project pipelines, two first heat preservation layers are sleeved on the outer side of the metal pipe sleeve, and first protection layers are sleeved on the outer sides of the first heat preservation layers. The outer side of the first protection layer is sleeved with hoop plates, and the two hoop plates are connected through bolts. The hydraulic engineering pipeline welding device has the beneficial effects that before two hydraulic engineering pipelines are welded, one hydraulic engineering pipeline is sleeved with the metal pipe sleeve in advance, and after the splicing position of the two hydraulic engineering pipelines is welded and fixed, the metal pipe sleeve is shifted to be arranged at the welding position of the two hydraulic engineering pipelines in a sleeving mode; by means of the design, the phenomenon that the welding position of the two water conservancy project pipelines is bent can be effectively avoided, the straightness of pipeline connection is guaranteed, and the quality of pipeline connection is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe joint technology field, concretely is a pipeline connecting device for water conservancy project. BACKGROUND

[0002] In water conservancy project, pipeline connection is a crucial link. At present, when water conservancy project pipeline connects, two pipeline welding places often lack effective protection and fixing measures. In the welding process, the welding place is prone to bending phenomenon, which not only affects the connection quality of the pipeline, but also can reduce the service life of the pipeline, and even causes security risks.

[0003] Moreover, after welding, the welding place is directly exposed to the external environment, and is easily eroded by external factors such as temperature change, moisture penetration, etc., thereby affecting the normal operation of the pipeline. In addition, the existing pipeline connecting device also has defects in the fixing aspect, and the part sleeved on the pipeline is prone to rotation, resulting in unstable connection, further affecting the safety and reliability of the entire water conservancy project pipeline system. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a pipeline connecting device for water conservancy project to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pipeline connecting device for water conservancy project, comprising a metal pipe sleeve, the metal pipe sleeve is sleeved at the welding place of two water conservancy project pipelines, the outer side of the metal pipe sleeve is sleeved with two heat preservation layers one, the outer side of the heat preservation layer one is sleeved with a protective layer one, the outer side of the protective layer one is sleeved with a hoop plate, and the two hoop plates are connected through bolts.

[0006] Preferably, the heat preservation layer one is a semicircular ring plate, the inner ring surface of the heat preservation layer one is provided with a buckle groove, the buckle groove is a semicircular groove, the buckle groove is sleeved on the metal pipe sleeve, the protective layer one is a semicircular ring plate, and the width of the protective layer one and the heat preservation layer one is greater than the width of the metal pipe sleeve.

[0007] Preferably, the outer ring surface of the protective layer one is provided with a mounting groove, and the hoop plate is sleeved in the mounting groove.

[0008] Preferably, the water conservancy project pipeline comprises a metal pipe, a heat preservation layer two sleeved on the outer side of the metal pipe, and a protective layer two sleeved on the outer side of the heat preservation layer two, the pipe length of the heat preservation layer two and the protective layer two is less than the pipe length of the metal pipe, and the heat preservation layer one is clamped between the adjacent two heat preservation layer two.

[0009] Preferably, the inner ring surface of the metal pipe sleeve is fixed with two sealing rings, and the two sealing rings are distributed on the two sides of the welding place of the two metal pipes.

[0010] Preferably, the metal sleeve, the first heat preservation layer, the first protective layer and the hoop plate are provided with two groups of reserved holes, long handle screws are inserted into the reserved holes, and one end of the long handle screw is screwed on the outer wall of the metal pipe.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The pipeline connecting device for water conservancy projects has the advantages that: the metal sleeve is pre-installed on one water conservancy pipeline before two water conservancy pipelines are welded, the metal sleeve is installed on the welding position of the two water conservancy pipelines after the two water conservancy pipelines are welded and fixed, the design can effectively prevent the welding position of the two water conservancy pipelines from being bent, the straightness of the pipeline connection is ensured, and the quality of the pipeline connection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a structural top view of the utility model;

[0015] Figure 3 It is a structural schematic view of the utility model; Figure 2 It is a structural sectional view of A-A of the utility model;

[0016] Figure 4 It is a structural schematic view of the utility model; Figure 3 It is an enlarged schematic view of A of the utility model;

[0017] Figure 5 It is a connecting structure schematic view of the metal sleeve and the first protective layer of the utility model;

[0018] Figure 6 It is a structural schematic view of the first protective layer of the utility model.

[0019] In the drawing: the metal sleeve 1, the first heat preservation layer 2, the buckle groove 3, the first protective layer 4, the hoop plate 5, the bolt 6, the metal pipe 7, the second heat preservation layer 8, the second protective layer 9, the reserved hole 10, the long handle screw 11, the installation groove 12 and the sealing ring 13. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries on further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiments, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0021] Please refer to Figures 1 to 5 The utility model provides a kind of technical scheme: a pipeline connecting device for hydraulic engineering, including metal pipe sleeve 1, the metal pipe sleeve 1 is equipped in the welding place of two hydraulic engineering pipelines, two thermal insulation layers one 2 are equipped on the outside of metal pipe sleeve 1, the outside of thermal insulation layer one 2 is equipped with protective layer one 4, thermal insulation layer one 2 is half circular ring plate, the inner ring surface of thermal insulation layer one 2 is equipped with buckle groove 3, buckle groove 3 is half circular ring groove, buckle groove 3 is equipped on metal pipe sleeve 1, protective layer one 4 is half circular ring plate, the width of protective layer one 4 and thermal insulation layer one 2 is all greater than the width of metal pipe sleeve 1, hoop plate 5 is equipped on the outside of protective layer one 4, two hoop plates 5 are connected by bolt 6, the outer ring surface of protective layer one 4 is equipped with mounting groove 12, hoop plate 5 is equipped in mounting groove 12.When two hydraulic engineering pipelines are welded, metal pipe sleeve 1 is pre-equipped on one hydraulic engineering pipeline, when the splicing of two hydraulic engineering pipelines is welded and fixed, metal pipe sleeve 1 is equipped in the welding place of two hydraulic engineering pipelines, to avoid the welding place of two hydraulic engineering pipelines to appear bending phenomenon, then thermal insulation layer one 2 with protective layer one 4 fixed is equipped on metal pipe sleeve 1, then hoop plate 5 is equipped on protective layer one 4, after the end of two hoop plates 5 is close together, two hoop plates 5 are fixed together by bolt 6, in this way, two groups of thermal insulation layer one 2 and protective layer one 4 are wrapped and protected to metal pipe sleeve 1 and the welding place of two hydraulic engineering pipelines.

[0022] Hydraulic engineering pipeline includes metal pipe 7, thermal insulation layer two 8 equipped on the outside of metal pipe 7 and protective layer two 9 equipped on the outside of thermal insulation layer two 8, the pipe length of thermal insulation layer two 8 and protective layer two 9 is all less than the pipe length of metal pipe 7, thermal insulation layer one 2 is clamped between adjacent two thermal insulation layer two 8;The inner ring surface of metal pipe sleeve 1 is fixed with two sealing rings 13, two sealing rings 13 are distributed on the two sides of the welding place of two metal pipes 7;The surface of metal pipe sleeve 1, thermal insulation layer one 2, protective layer one 4 and hoop plate 5 is equipped with two groups of reserved holes 10, long handle screw rod 11 is inserted in the inside of reserved hole 10, and one end of long handle screw rod 11 is screwed on the outer wall of metal pipe 7.Through the installation of long handle screw rod 11, avoid the rotating phenomenon of metal pipe sleeve 1 equipped on metal pipe 7.

[0023] Detailed use process of the water conservancy project pipeline connecting device: the metal pipe sleeve 1 is pre-installed outside the welding end of one of the metal pipes 7 to be welded (pre-installed before welding to avoid damage to the pipe sleeve due to high temperature welding). Note: reserve enough length for subsequent displacement to the welding position. Fix two sealing rings 13 symmetrically on the inner ring surface of the metal pipe sleeve 1 on both sides of the welding position (on both sides of the welding position), and ensure that the sealing ring is not damaged and has good elasticity. The end faces of the two metal pipes 7 are aligned and welded to ensure that the welding quality meets the specification requirements. Cooling: after the welding position is completely cooled to room temperature, the next step is performed. Move the metal pipe sleeve 1 along the axis of the metal pipe 7 so that the center line coincides with the welding position completely, covering the welding area. Confirm that the pipe sleeve is not skewed, and the sealing ring is tightly attached to the outer wall of the metal pipe 7. Two half-circle ring-shaped heat preservation layers one 2 are sleeved from both sides of the pipeline, so that the buckle groove 3 tightly wraps the metal pipe sleeve 1. Ensure that the heat preservation layer one 2 is clamped between the adjacent two heat preservation layers two 8 to form a continuous heat preservation structure. Two half-circle ring-shaped protective layers one 4 are sleeved outside the heat preservation layer one 2, and the width direction completely covers the heat preservation layer one 2. The protective layer one 4 and the outer protective layer 9 of the heat preservation layer two 8 should be tightly connected to avoid the heat bridge effect. Two half-circle clamping plates 5 are sleeved from the outside of the protective layer one 4, and the end faces are aligned with the installation groove 12. Manually adjust the position of the clamping plate to ensure uniform wrapping without local relaxation. Insert the bolt 6 and preliminarily fasten it, and cross symmetrically tighten it to uniformly compress the heat preservation layer and the protective layer. Apply the specified preload to avoid excessive compression damage to the heat preservation material. Insert the long handle screw 11 from the reserved hole 10, and screw one end to the outer wall of the metal pipe 7. Install at least two groups of screws evenly around the circumference to prevent the metal pipe sleeve from rotating axially.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe connecting device for hydraulic engineering comprising a metal pipe sleeve (1), characterized in that: The metal sleeve (1) is sleeved on the welding position of two water conservancy pipelines, the outer side of the metal sleeve (1) is sleeved with two thermal insulation layers (2), the outer side of the thermal insulation layer (2) is sleeved with a protective layer (4), the outer side of the protective layer (4) is sleeved with a hoop plate (5), and the two hoop plates (5) are connected through bolts (6).

2. A pipe coupling device for hydraulic engineering according to claim 1, characterized in that: The thermal insulation layer (2) is a semicircular ring plate, the inner ring surface of the thermal insulation layer (2) is provided with a buckle groove (3), the buckle groove (3) is a semicircular ring groove, the buckle groove (3) is sleeved on the metal sleeve (1), the protective layer (4) is a semicircular ring plate, and the widths of the protective layer (4) and the thermal insulation layer (2) are greater than the width of the metal sleeve (1).

3. A pipe coupling device for hydraulic engineering according to claim 2, characterized in that: The outer ring surface of the protective layer (4) is provided with a mounting groove (12), and the hoop plate (5) is sleeved in the mounting groove (12).

4. A pipe coupling device for hydraulic engineering according to claim 3, characterized in that: The water conservancy pipeline comprises a metal pipe (7), a thermal insulation layer (8) sleeved on the outer side of the metal pipe (7), and a protective layer (9) sleeved on the outer side of the thermal insulation layer (8), the pipe lengths of the thermal insulation layer (8) and the protective layer (9) are less than the pipe length of the metal pipe (7), and the thermal insulation layer (2) is clamped between two adjacent thermal insulation layers (8).

5. A pipe coupling device for hydraulic engineering according to claim 4, characterized in that: The inner ring surface of the metal sleeve (1) is fixed with two sealing rings (13), and the two sealing rings (13) are distributed on the two sides of the welding position of the two metal pipes (7).

6. A pipe coupling device for hydraulic engineering according to claim 1, characterized in that: The surfaces of the metal sleeve (1), the thermal insulation layer (2), the protective layer (4) and the hoop plate (5) are provided with two groups of reserved holes (10), the inside of the reserved hole (10) is inserted with a long handle screw (11), and one end of the long handle screw (11) is screwed on the outer wall of the metal pipe (7).

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