Vacuum pipeline sealing device

Abstract

The utility model relates to the technical field of vacuum pipelines, in particular to a vacuum pipeline sealing device. According to the technical scheme, the device comprises a first vacuum pipeline, a first semicircular heat preservation ring, a sealing cover, a nut and a bolt, a semicircular hole is formed in one side of the first semicircular heat preservation ring, a discharging pipe is installed on the upper surface of the first semicircular heat preservation ring, second hanging lugs are fixed to the front end and the rear end of the first semicircular heat preservation ring respectively, and a second semicircular heat preservation ring is attached to the lower surface of the first semicircular heat preservation ring; a semicircular hole is formed in one side of the second semicircular heat preservation ring, a discharging pipe is installed on the lower surface of the second semicircular heat preservation ring, first hanging lugs are fixed to the front end and the rear end of the second semicircular heat preservation ring respectively, one side of the first vacuum pipeline extends into the semicircular hole, and a second vacuum pipeline is welded to one side of the first vacuum pipeline. The device has the advantages of being convenient to mount, dismount and overhaul and capable of preventing pearlife from being affected with damp and losing efficacy.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pipelines, in particular to a vacuum pipeline sealing device. Background Art

[0002] Cryogenic liquids (liquid oxygen, liquid nitrogen, liquid argon) are widely used in many fields, especially in the steel and chemical industries. Therefore, the application of liquid transportation pipelines that match the construction of cryogenic liquid pipeline projects is becoming more and more common. Each section of the vacuum tube is welded. Since there is a temperature difference of about 200°C between the cryogenic liquid and the environment, the sealing of the pipe joint is the key to heat preservation and reducing cold loss.

[0003] When connecting the pipeline, move the sealing insulation sleeve from the end plate of one end of the pipeline to one side, put the other pipeline in place, and weld it to the first pipe (manual welding). The sealing insulation sleeve is welded to the pipeline end plate, and then pearl sand is filled into the insulation sleeve, and the pearl sand filling port at the upper end of the insulation sleeve is sealed with a sealing cap to achieve the insulation effect.

[0004] However, under the actual liquid flow state, the cold source at the interface spreads along the outside of the inner pipe to the end plate, causing local frost on the outside of the end plate. As the running time increases, the weld between the sealing insulation sleeve and the pipeline end plate is particularly prone to cracking and sand loss, causing frost and cold escape. At the same time, after the insulation sleeve is installed, it is inconvenient to disassemble it, making it inconvenient for staff to inspect and repair the pipeline. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum pipe sealing device, which has the advantages of being easy to install and disassemble, convenient for maintenance, and can prevent pearl sand from becoming ineffective due to moisture. It solves the problem that the welding joint between the sealing insulation sleeve and the pipe end plate is particularly prone to cracking and sand falling, causing frost and cooling. At the same time, after the insulation sleeve is installed, it is inconvenient to disassemble it, making it inconvenient for staff to repair the pipe.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum pipe sealing device, comprising a vacuum pipe, a semicircular insulation ring, a sealing cover, nuts and bolts, a semicircular hole is provided on one side of the semicircular insulation ring, a discharge pipe is installed on the upper surface of the semicircular insulation ring, two hanging ears are respectively fixed at the front and rear ends of the semicircular insulation ring, a semicircular insulation ring 2 is bonded to a lower surface of the semicircular insulation ring, a semicircular hole is provided on one side of the semicircular insulation ring 2, a discharge pipe is installed on the lower surface of the semicircular insulation ring 2, a hanging ear is respectively fixed at the front and rear ends of the semicircular insulation ring 2, one side of the vacuum pipe is extended into the semicircular hole, and a vacuum pipe 2 is welded to one side of the vacuum pipe.

[0007] Preferably, the diameter of the semicircular hole matches the diameter of vacuum pipe 1, and the diameter of the semicircular hole matches the diameter of vacuum pipe 2. By matching the diameter of the semicircular hole with the diameter of vacuum pipe 1 and the diameter of vacuum pipe 2, it is convenient to extend vacuum pipe 1 and vacuum pipe 2 into the semicircular hole.

[0008] Preferably, the upper surface of the second hanging ear is provided with a threaded hole 1, the upper surface of the first hanging ear is provided with a threaded hole 2, the bottom end of the bolt passes through the threaded hole 1, the bottom end of the bolt passes through the threaded hole 2, and the bolt is threadedly connected with the nut. The bolt passes through the threaded hole 1 and the threaded hole 2, and then the nut is connected, so that the semicircular insulation ring 1 and the semicircular insulation ring 2 can be defined, which is convenient for installation and disassembly.

[0009] Preferably, a circular groove is formed on the lower surface of the sealing cover, and the top end of the discharge pipe is inserted into the circular groove. The circular groove facilitates the insertion of the top end of the discharge pipe, so that the discharge pipe can be sealed.

[0010] Preferably, the upper surface of the semicircular heat preservation ring 1 is provided with a mounting hole, the lower surface of the semicircular heat preservation ring 2 is provided with a mounting hole, and the lower end of the outer wall of the discharge pipe extends into the mounting hole and is fixed. The mounting hole facilitates the discharge pipe to extend into and be fixedly installed.

[0011] Preferably, a receiving groove is provided at the bottom of the inner wall of the mounting hole provided on the upper surface of the semicircular insulation ring 1, and a receiving groove is provided at the top of the inner wall of the mounting hole provided on the lower surface of the semicircular insulation ring 2. The receiving groove is convenient for containing pearl sand and pressurized nitrogen.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model is provided with a discharge pipe installed on the upper surface of a semicircular insulation ring, two hanging ears are respectively fixed at the front and rear ends of the semicircular insulation ring, a semicircular insulation ring two is bonded to a lower surface of the semicircular insulation ring, a discharge pipe is installed on the lower surface of the semicircular insulation ring two, a hanging ear one is respectively fixed at the front and rear ends of the semicircular insulation ring two, one side of the vacuum pipe one is extended into the semicircular hole, and a vacuum pipe two is welded to one side of the vacuum pipe one. When it is necessary to seal the welded vacuum pipe one and the vacuum pipe two, the welding point of the vacuum pipe one and the vacuum pipe two is extended into the semicircular hole, and then a bolt is passed through the threaded hole one and the threaded hole two, the bolt is threadedly connected to the nut, and pearl sand and pressurized nitrogen are introduced into the containing tank, so as to achieve the effect of easy installation and disassembly, convenient maintenance, and at the same time preventing the pearl sand from being damaged by moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the vacuum pipeline of the utility model;

[0016] Figure 3 It is a schematic cross-sectional structure diagram of a semicircular heat-insulating ring of the present utility model.

[0017] In the figure: 1. vacuum pipe 1; 2. semicircular insulation ring 1; 3. sealing cover; 4. vacuum pipe 2; 5. semicircular insulation ring 2; 6. hanging ear 1; 7. hanging ear 2; 8. round groove; 9. threaded hole 1; 10. threaded hole 2; 11. semicircular hole; 12. holding groove; 13. mounting hole; 14. discharge pipe; 15. nut; 16. bolt. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 3 The utility model provides an embodiment: a vacuum pipe sealing device, including a vacuum pipe 1, a semicircular insulation ring 2, a sealing cover 3, a nut 15 and a bolt 16. A semicircular hole 11 is opened on one side of the semicircular insulation ring 2. The diameter of the semicircular hole 11 matches the diameter of the vacuum pipe 1. The diameter of the semicircular hole 11 matches the diameter of the vacuum pipe 24. The diameter of the semicircular hole 11 matches the diameter of the vacuum pipe 1 and the diameter of the vacuum pipe 24 respectively, so that the vacuum pipe 1 and the vacuum pipe 24 are conveniently extended into the semicircular hole 11. A discharge pipe 14 is installed on the upper surface of the semicircular insulation ring 2. A mounting hole 13 is provided on the upper surface of the ring 12, and a mounting hole 13 is provided on the lower surface of the semicircular insulation ring 25. The lower end of the outer wall of the discharge pipe 14 extends into the mounting hole 13 and is fixed. A containing groove 12 is provided at the bottom end of the inner wall of the mounting hole 13 provided on the upper surface of the semicircular insulation ring 2, and a containing groove 12 is provided at the top end of the inner wall of the mounting hole 13 provided on the lower surface of the semicircular insulation ring 25. The mounting hole 13 facilitates the discharge pipe 14 to extend into and be fixedly installed. The containing groove 12 facilitates the containing of pearl sand and pressurized nitrogen. The dry and clean pressurized nitrogen is introduced into the containing groove 12 to play a sealing role and prevent the pearl sand from becoming ineffective due to moisture.

[0020] The front and rear ends of the semicircular insulation ring 2 are respectively fixed with a hanging ear 2 7, a threaded hole 19 is provided on the upper surface of the hanging ear 27, a threaded hole 10 is provided on the upper surface of the hanging ear 6, the bottom end of the bolt 16 passes through the threaded hole 19, the bottom end of the bolt 16 passes through the threaded hole 210, the bolt 16 is threadedly connected with the nut 15, the bolt 16 passes through the threaded hole 19 and the threaded hole 210, and then the nut 15 is connected, so that the semicircular insulation ring 1 2 and the semicircular insulation ring 2 5 can be restricted, which is convenient for installation and disassembly.

[0021] A semicircular insulation ring 2 is attached to the lower surface of the semicircular insulation ring 2, a semicircular hole 11 is provided on one side of the semicircular insulation ring 25, a discharge pipe 14 is installed on the lower surface of the semicircular insulation ring 25, a circular groove 8 is provided on the lower surface of the sealing cover 3, the top end of the discharge pipe 14 is inserted into the circular groove 8, and the circular groove 8 facilitates the top end of the discharge pipe 14 to be inserted, so that the discharge pipe 14 can be sealed, and the front and rear ends of the semicircular insulation ring 25 are respectively fixed with hanging ears 6, one side of the vacuum pipe 1 extends into the semicircular hole 11, and a vacuum pipe 24 is welded to one side of the vacuum pipe 1.

[0022] When the welded vacuum pipe 1 and vacuum pipe 2 4 need to be sealed, the welding point of vacuum pipe 1 and vacuum pipe 2 4 is inserted into the semicircular hole 11, and then the bottom end of the bolt 16 is passed through the threaded hole 1 9 and the threaded hole 2 10, and the bolt 16 is passed through the nut 15 and threadedly connected, and then the pearl sand and pressurized nitrogen are introduced into the containing tank 12 through the discharge pipe 14, and the discharge pipe 14 is inserted into the circular groove 8. The effect of facilitating installation and disassembly, convenient maintenance, and preventing the pearl sand from being damaged by moisture can be achieved.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vacuum pipe sealing device, comprising a vacuum pipe (1), a semicircular insulation ring (2), a sealing cover (3), a nut (15) and a bolt (16), characterized in that: A semicircular hole (11) is provided on one side of the semicircular insulation ring 1 (2); a discharge pipe (14) is installed on the upper surface of the semicircular insulation ring 1 (2); two hanging ears (7) are respectively fixed on the front and rear ends of the semicircular insulation ring 1 (2); a semicircular insulation ring 2 (5) is attached to the lower surface of the semicircular insulation ring 1 (2); a semicircular hole (11) is provided on one side of the semicircular insulation ring 2 (5); a discharge pipe (14) is installed on the lower surface of the semicircular insulation ring 2 (5); a hanging ear (6) is respectively fixed on the front and rear ends of the semicircular insulation ring 2 (5); one side of the vacuum pipe 1 (1) extends into the semicircular hole (11); and a vacuum pipe 2 (4) is welded to one side of the vacuum pipe 1 (1).

2. A vacuum pipe sealing device according to claim 1, characterized in that: The diameter of the semicircular hole (11) matches the diameter of the vacuum pipe one (1), and the diameter of the semicircular hole (11) matches the diameter of the vacuum pipe two (4).

3. A vacuum pipe sealing device according to claim 1, characterized in that: The upper surface of the second hanging ear (7) is provided with a threaded hole (9), the upper surface of the first hanging ear (6) is provided with a threaded hole (10), the bottom end of the bolt (16) passes through the threaded hole (9), the bottom end of the bolt (16) passes through the threaded hole (10), and the bolt (16) is threadedly connected with the nut (15).

4. A vacuum pipe sealing device according to claim 1, characterized in that: A circular groove (8) is provided on the lower surface of the sealing cover (3), and the top end of the discharge pipe (14) is inserted into the circular groove (8).

5. The vacuum pipe sealing device according to claim 1, characterized in that: The upper surface of the semicircular insulation ring 1 (2) is provided with a mounting hole (13), the lower surface of the semicircular insulation ring 2 (5) is provided with a mounting hole (13), and the lower end of the outer wall of the discharge pipe (14) extends into the mounting hole (13) and is fixed.

6. A vacuum pipe sealing device according to claim 5, characterized in that: A receiving groove (12) is provided at the bottom end of the inner wall of the mounting hole (13) provided on the upper surface of the semicircular insulation ring 1 (2), and a receiving groove (12) is provided at the top end of the inner wall of the mounting hole (13) provided on the lower surface of the semicircular insulation ring 2 (5).

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