Expansion joint of plastic sleeve steel thermal insulation pipe

Abstract

The utility model discloses a plastic sleeve steel thermal insulation pipe expansion joint, which relates to the technical field of expansion joints and comprises a plastic sleeve steel thermal insulation pipe body, an expansion pipe is arranged on one side of the plastic sleeve steel thermal insulation pipe body, an expansion assembly is arranged on one side of the expansion pipe, and a quick installation assembly is arranged on one side of the plastic sleeve steel thermal insulation pipe body. The telescopic assembly comprises a plurality of movable grooves, the movable grooves are formed in the outer ring of one side of the telescopic pipe at equal intervals, and sliding shafts are arranged in the movable grooves in a sliding mode; the plastic sleeve steel thermal insulation pipe has the advantages that the spring arranged in the telescopic assembly drives the sliding shaft to elastically slide in the movable groove, the sliding of the sliding shaft drives the mounting ring to elastically slide out of the plastic sleeve steel thermal insulation pipe body for telescopic use, and when the plastic sleeve steel thermal insulation pipe elastically stretches to a proper position, the mounting ring is matched with the fixing plate to be fixed through the fixing nail; the length of the telescopic pipe is lengthened and fixed to achieve the purpose of telescopic use, telescopic adjustment of the plastic sleeve steel heat preservation pipe is facilitated, and the use effect is improved.

Description

Technical Field

[0001] The utility model relates to an expansion joint, in particular to a plastic-jacketed steel insulation pipe expansion joint, and belongs to the technical field of expansion joints. Background Art

[0002] The plastic-jacketed steel prefabricated insulated pipe is composed of a working steel pipe, a foam insulation layer, and a polyethylene plastic outer protective pipe for conveying the medium, which are sequentially combined outwards through equipment. The expansion joint can also be called a pipeline expansion joint, a compensator, or an expansion joint. The expansion joint is divided into several types: corrugated expansion joint, sleeve expansion joint, square natural compensation expansion joint, etc., among which the corrugated expansion joint is more commonly used.

[0003] Among them, a plastic-sheathed steel insulated pipe expansion joint with application number "CN202121520286.8" can include: an expansion joint, one end of the expansion joint is threadedly connected with a connecting sleeve for adjusting the length, the outer surface of the connecting sleeve is provided with a plurality of adjusting teeth, a sealing rubber ring for enhancing the sealing is provided between the plurality of adjusting teeth, the outer sleeve of the adjusting teeth is provided with an upper blade sleeve and a lower blade sleeve, four fixed blocks are fixedly connected to the upper blade sleeve and the lower blade sleeve, connecting grooves are opened on the four fixed blocks, and short bolts are provided at the bottom of the fixed block, and the short bolts pass through the fixed block and extend to the outside of the fixed block. The plastic-sheathed steel insulated pipe expansion joint provided by the utility model has the effect of adjusting the length when the length between the pipes and the spacing between the expansion joints are not suitable, which expands the application scope of the expansion joint to a certain extent and indirectly improves the efficiency. Further search found that the plastic-sheathed steel insulated pipe expansion joint with application number "CN201922228197.5" has a corrugated rubber expansion pipe sleeve and a waterproof strip on the surface of the outer sheath of the steel pipe. The rubber expansion pipe sleeve and the waterproof strip are elastic materials with a certain amount of expansion and contraction, which can expand and contract with the steel pipe body to prevent tearing. The utility model greatly improves the impact resistance and strength of the expansion joint itself, and has the advantages of compact structure, reasonable design and good insulation effect.

[0004] However, the above two types still have certain shortcomings when in use. The length of the expansion joint of the existing plastic-coated steel insulated pipe cannot be adjusted, which affects the use effect, and it is not convenient for quick installation, which affects the use efficiency. Utility Model Content

[0005] The utility model aims to provide a plastic-jacketed steel insulated pipe expansion joint to solve the problems in the above-mentioned background technology that the existing plastic-jacketed steel insulated pipe expansion joint cannot be adjusted in length and is not convenient for quick installation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic-coated steel insulated pipe expansion joint, comprising a plastic-coated steel insulated pipe body, a expansion pipe is provided on one side of the plastic-coated steel insulated pipe body, a expansion assembly is provided on one side of the expansion pipe, and a quick installation assembly is provided on one side of the plastic-coated steel insulated pipe body; the expansion assembly comprises a plurality of movable grooves, a plurality of the movable grooves are equidistantly arranged on the outer ring of one side of the expansion pipe, and a plurality of the movable grooves are slidably provided with sliding shafts inside; the quick installation assembly comprises four U-shaped rods and an installation sleeve, the movable installation sleeve is arranged on one side of the plastic-coated steel insulated pipe body, and one end of the four U-shaped rods is respectively connected to the outer ring of the installation sleeve.

[0007] As a preferred technical solution of the utility model, a spring is provided on one side of the inner wall of the plurality of movable grooves, one end of the plurality of springs is respectively connected to one end of the plurality of sliding shafts, the other end of the plurality of sliding shafts is connected to a mounting ring, and the other end of the four U-shaped rods is connected to the outer ring of the mounting ring;

[0008] As a preferred technical solution of the utility model, the outer rings of several of the sliding shafts are provided with two telescopic fixed cylinders, and both sides of the bottom ends and both sides of the top ends of the two telescopic fixed cylinders are provided with fixing plates, and the fixing plates are connected by fixing nails.

[0009] As a preferred technical solution of the utility model, the top movable sleeve on one side of the plastic-coated steel insulation pipe body is provided with a first semicircular threaded fixing ring, and one side of the bottom end of the first semicircular threaded fixing ring is hinged with a second semicircular threaded fixing ring through a hinge.

[0010] As a preferred technical solution of the utility model, a magnetic plate is provided on the other side of the bottom end of the first semicircular threaded fixing ring, and an iron plate is provided on one side of the top end of the second semicircular threaded fixing ring, and the magnetic plate is adsorbed and connected to the iron plate.

[0011] As a preferred technical solution of the utility model, a thread groove matching with the first semicircular thread fixing ring and the second semicircular thread fixing ring is opened on one side of the plastic-sheathed steel insulation pipe body.

[0012] As a preferred technical solution of the present utility model, the mounting ring is made of nitrile rubber.

[0013] Compared with the related art, the plastic-sheathed steel insulation pipe expansion joint provided by the utility model has the following beneficial effects:

[0014] The telescopic tube is fixed at one end of the plastic-coated steel insulated pipe body, and the spring arranged in the telescopic assembly drives the sliding shaft to slide elastically in the movable groove. The sliding of the sliding shaft drives the mounting ring to slide elastically out of the plastic-coated steel insulated pipe body for telescopic use. When it is elastically extended to an appropriate position, the mounting ring cooperates with the fixing plate and is fixed through the fixing nails to extend the length of the telescopic tube to achieve the purpose of telescopic use. At the same time, it is convenient to adjust the telescopic and expansion of the plastic-coated steel insulated pipe to improve the use effect. The U-shaped rod arranged in the quick installation assembly drives the mounting ring and the mounting sleeve to slide on the movable sleeve on one side of the plastic-coated steel insulated pipe body. When the mounting sleeve slides to an appropriate position, the magnetic plate and the iron plate are adsorbed to make the first semicircular threaded fixing ring and the second semicircular threaded fixing ring cooperate with the hinge to form a closed loop. The formed closed loop is threadedly fixed to the threaded groove, so that the mounting ring is fixed during contraction and is easy to install quickly, thereby improving the use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of a primary cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the secondary cross-sectional structure of the utility model;

[0018] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0019] Figure 5 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0020] In the figure: 1. Plastic-coated steel insulated pipe body; 2. Telescopic pipe; 3. Telescopic assembly; 31. Movable groove; 32. Spring; 33. Sliding shaft; 34. Mounting ring; 35. Telescopic fixing cylinder; 36. Fixing plate; 37. Fixing nail; 4. Quick installation assembly; 41. U-shaped rod; 42. Mounting sleeve; 43. First semicircular threaded fixing ring; 44. Second semicircular threaded fixing ring; 45. Hinge; 46. Iron plate; 47. Magnetic plate; 48. Threaded groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-4 The utility model provides a plastic-sheathed steel insulation pipe expansion joint, comprising a plastic-sheathed steel insulation pipe body 1, a telescopic pipe 2 is provided on one side of the plastic-sheathed steel insulation pipe body 1, a telescopic component 3 is provided on one side of the telescopic pipe 2, and a quick installation component 4 is provided on one side of the plastic-sheathed steel insulation pipe body 1;

[0024] The telescopic assembly 3 includes a plurality of movable grooves 31, which are arranged at equal intervals on the outer ring of one side of the telescopic tube 2, and a sliding shaft 33 is slidably arranged inside the plurality of movable grooves 31;

[0025] A spring 32 is provided on one side of the inner wall of the plurality of movable grooves 31, one end of each of the springs 32 is connected to one end of each of the plurality of sliding shafts 33, the other end of each of the plurality of sliding shafts 33 is connected to a mounting ring 34, and the other ends of the four U-shaped rods 41 are connected to the outer ring of the mounting ring 34;

[0026] The outer rings of the plurality of sliding shafts 33 are provided with two telescopic fixed cylinders 35, and both sides of the bottom ends and both sides of the top ends of the two telescopic fixed cylinders 35 are provided with fixing plates 36, and four fixing plates 36 are provided, and the fixing plates 36 are connected by fixing nails 37;

[0027] The mounting ring 34 is made of nitrile rubber;

[0028] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the spring 32 arranged in the telescopic component 3 drives the sliding shaft 33 to slide elastically in the movable groove 31. The sliding of the sliding shaft 33 drives the mounting ring 34 to elastically slide out the plastic-coated steel insulated pipe body 1 for telescopic use. When it is elastically stretched to an appropriate position, the mounting ring 34 cooperates with the fixing plate 36 and is fixed by the fixing nail 37. The length of the telescopic pipe 2 is extended and fixed to achieve the purpose of telescopic use. At the same time, it is convenient to make the plastic-coated steel insulated pipe body 1 telescopically adjustable to improve the use effect.

[0029] Embodiment 2:

[0030] The quick installation assembly 4 includes four U-shaped rods 41 and an installation sleeve 42. The installation sleeve 42 is movably mounted on one side of the plastic-sheathed steel insulation pipe body 1. One end of the four U-shaped rods 41 is respectively connected to the outer ring of the installation sleeve 42.

[0031] A first semicircular threaded fixing ring 43 is provided on the top movable sleeve of one side of the plastic-sheathed steel insulation pipe body 1, and a second semicircular threaded fixing ring 44 is hingedly connected to one side of the bottom end of the first semicircular threaded fixing ring 43 through a hinge 45;

[0032] A magnetic plate 47 is provided on the other side of the bottom end of the first semicircular threaded fixing ring 43, and an iron plate 46 is provided on one side of the top end of the second semicircular threaded fixing ring 44. The magnetic plate 47 is adsorbed and connected to the iron plate 46.

[0033] A thread groove 48 matching with the first semicircular thread fixing ring 43 and the second semicircular thread fixing ring 44 is provided on one side of the plastic-sheathed steel insulation pipe body 1;

[0034] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the U-shaped rod 41 provided in the quick installation component 4 drives the installation ring 34 and the installation sleeve 42 to slide in the movable sleeve on one side of the plastic-coated steel insulation pipe body 1. When the installation sleeve 42 slides to the appropriate position, the magnetic plate 47 and the iron plate 46 are adsorbed to make the first semicircular threaded fixing ring 43 and the second semicircular threaded fixing ring 44 cooperate with the hinge 45 to form a closed loop. The formed closed loop is threadedly fixed with the thread groove 48, so that the installation ring 34 can be fixed when it is retracted for use and is easy to install quickly, thereby improving the use efficiency.

[0035] When in use, first fix the telescopic tube 2 at one end of the plastic-sheathed steel insulation pipe body 1, and the spring 32 arranged in the telescopic assembly 3 drives the sliding shaft 33 to slide elastically in the movable groove 31, and the sliding of the sliding shaft 33 drives the mounting ring 34 to elastically slide out of the plastic-sheathed steel insulation pipe body 1 for telescopic use. When it is elastically telescoped to an appropriate position, the mounting ring 34 cooperates with the fixing plate 36 and is fixed by the fixing nail 37, so that the length of the telescopic tube 2 is extended and fixed to achieve the purpose of telescopic use. At the same time, it is convenient to make the plastic-sheathed steel insulation pipe body 1 telescopically adjustable, thereby improving the use In order to achieve the desired effect, when the extended use is not needed, the U-shaped rod 41 arranged in the quick installation component 4 drives the installation ring 34 and the installation sleeve 42 to slide in the movable sleeve on one side of the plastic-coated steel insulation pipe body 1. When the installation sleeve 42 slides to the appropriate position, the magnetic plate 47 and the iron plate 46 are adsorbed to make the first semicircular threaded fixing ring 43 and the second semicircular threaded fixing ring 44 cooperate with the hinge 45 to form a closed loop. The formed closed loop is threadedly fixed with the thread groove 48, so that the installation ring 34 can be fixed when it is retracted for use and is easy to install quickly, thereby improving the use efficiency.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic-jacketed steel insulated pipe expansion joint, comprising a plastic-jacketed steel insulated pipe body (1), It is characterized in that A telescopic tube (2) is provided on one side of the plastic-sheathed steel thermal insulation pipe body (1), a telescopic assembly (3) is provided on one side of the telescopic tube (2), and a quick installation assembly (4) is provided on one side of the plastic-sheathed steel thermal insulation pipe body (1); The telescopic assembly (3) comprises a plurality of movable grooves (31), wherein the plurality of movable grooves (31) are arranged at equal intervals on an outer ring of one side of the telescopic tube (2), and a sliding shaft (33) is slidably provided inside the plurality of movable grooves (31); The quick installation assembly (4) comprises four U-shaped rods (41) and an installation sleeve (42), wherein the installation sleeve (42) is movably mounted on one side of the plastic-sheathed steel insulation pipe body (1), and one end of the four U-shaped rods (41) is respectively connected to the outer ring of the installation sleeve (42).

2. The expansion joint of the plastic-jacketed steel insulation pipe according to claim 1, Features: A spring (32) is provided on one side of the inner wall of the plurality of movable grooves (31), one end of the plurality of springs (32) is respectively connected to one end of the plurality of sliding shafts (33), the other end of the plurality of sliding shafts (33) is connected to a mounting ring (34), and the other end of the four U-shaped rods (41) is connected to the outer ring of the mounting ring (34).

3. The expansion joint of the plastic-jacketed steel insulation pipe according to claim 2, Features: The outer rings of the plurality of sliding shafts (33) are provided with two telescopic fixing cylinders (35), and fixing plates (36) are provided on both sides of the bottom ends and both sides of the top ends of the two telescopic fixing cylinders (35), and the fixing plates (36) are connected by fixing nails (37).

4. The expansion joint of the plastic-jacketed steel insulation pipe according to claim 1, Features: A first semicircular threaded fixing ring (43) is provided on the top movable sleeve of one side of the plastic-sheathed steel insulation pipe body (1), and a second semicircular threaded fixing ring (44) is hingedly connected to one side of the bottom end of the first semicircular threaded fixing ring (43) via a hinge (45).

5. The expansion joint of the plastic-jacketed steel insulation pipe according to claim 4, Features: A magnetic plate (47) is provided on the other side of the bottom end of the first semicircular threaded fixing ring (43), and an iron plate (46) is provided on one side of the top end of the second semicircular threaded fixing ring (44), wherein the magnetic plate (47) is adsorbed and connected to the iron plate (46).

6. The expansion joint of the plastic-jacketed steel insulation pipe according to claim 5, Features: A thread groove (48) matching with the first semicircular thread fixing ring (43) and the second semicircular thread fixing ring (44) is provided on one side of the plastic-sheathed steel insulation pipe body (1).

7. The expansion joint of the plastic-jacketed steel insulation pipe according to claim 2, Features: The mounting ring (34) is made of nitrile rubber.

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