Full-jacketed large glass-lined pipeline

Abstract

The utility model discloses a full jacketed large glass-lined pipeline, which belongs to the field of large glass-lined pipelines and comprises a glass-lined inner pipe and a jacketed pipe, a large end of the glass-lined inner pipe and a small end of the glass-lined inner pipe are arranged on the inner side of the glass-lined inner pipe, and the outer side of the jacketed pipe is slidably sleeved on the outer side of the glass-lined inner pipe. The outer side of the jacketed pipe is fixedly communicated with a first pipe and a second pipe, and a jacket inlet is formed in the inner side of the first pipe. The enamel inner pipe is reasonable in structural design, heat preservation and heat exchange are conducted on all enamel faces of the enamel inner pipe through a full-jacket closed structure, it is guaranteed that the whole enamel inner pipe is evenly heated, long-period stable work can be achieved especially under the working condition that high-temperature (200 DEG C) corrosive gas media are transported, the two ends of the enamel inner pipe are designed to be of elastic structures, and the service life of the enamel inner pipe is prolonged. And the corrugated expansion joint is additionally arranged on the jacketed pipe, so that the thermal stress is reduced to the minimum, and compared with a two-half welding mode, the welding workload is greatly reduced by utilizing an inner pipe and outer pipe sleeving mode.

Description

Technical Field

[0001] The utility model relates to the field of large glass-lined pipes, in particular to a full-jacketed large glass-lined pipe. Background Art

[0002] Glass-lined jacketed pipes are generally used to transport corrosive liquids and gases, with jacket insulation or heat exchange.

[0003] Conventional glass-lined jacketed pipes have flanges at both ends outside the jacketed pipe. When the medium is at high temperature, large temperature difference stress is generated between the covered and uncovered areas of the jacket, causing premature damage to the glass-lined jacketed pipe. Especially when conveying high-temperature corrosive gases, due to the large diameter of the enamel inner pipe and the large expansion of the pipe, the traditional jacketed pipe structure cannot meet the requirements of the operating conditions. If high-alloy steel corrosion-resistant pipes are used instead, the cost will be too high and it will be impossible to put it into production. Therefore, we propose a fully jacketed large glass-lined pipe to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a fully jacketed large glass-lined pipe to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A fully jacketed large glass-lined pipe comprises: a glass-lined inner pipe and a jacket pipe, wherein a large end of the glass-lined inner pipe and a small end of the glass-lined inner pipe are provided on the inner side of the glass-lined inner pipe, and the outer side of the jacket pipe is slidably sleeved on the outer side of the glass-lined inner pipe, and the outer side of the jacket pipe is fixedly connected to a No. 1 pipe and a No. 2 pipe, a jacket inlet is provided on the inner side of the No. 1 pipe, a jacket outlet is provided on the inner side of the No. 2 pipe, and two slip-on flanges are fixedly connected to the outer side of the jacket pipe, and threaded holes are provided on one side of each of the two slip-on flanges.

[0007] Preferably, a bellows expansion joint is provided on the outside of the jacket tube, a fixing ring is fixedly connected to the outside of the jacket tube, an exhaust port and a drain port are provided on the inside of the fixing ring, and the drain port is located at the bottom of the jacket tube.

[0008] Preferably, two small blocks are fixedly connected to the outside of the jacket tube, and the bottoms of the two small blocks are both threadedly connected to fixed supports.

[0009] Preferably, two jacket lifting ears are fixedly connected to the outer side of the jacket tube, and the inner sides of the two jacket lifting ears are each provided with a lifting hole.

[0010] Preferably, a slip-on flange fastener and a jacket support fastener are provided on the inner side of the jacket pipe, a warm layer is provided on the outer side of the jacket pipe, and a jacket pipe inlet anti-collision baffle is fixedly connected to the inner side of the glass-lined inner pipe.

[0011] Preferably, the glass-lined inner tube and the jacketed tube are both made of corrosion-resistant materials.

[0012] In the utility model, the fully jacketed large glass-lined pipe is installed through the equipment by slowly inserting the jacket pipe from the small end of the glass-lined inner pipe into the large end position of the glass-lined inner pipe, adjusting the positions of the No. 1 pipe and the No. 2 pipe, and then welding the jacket pipe to the large and small ends of the glass-lined inner pipe. After welding, small blocks are installed on the jacket pipe, and slip-on flanges are installed at the baffles at both ends of the jacket pipe. At this time, the installation is completed. When the equipment is installed on site, the fixed support is installed to the predetermined position, and the pipes are connected with gaskets and slip-on flange fasteners. After the No. 1 pipe and the No. 2 pipe are connected, the pipe can be put into operation. When the equipment is overhauled, the slip-on flange fasteners are disassembled, the jacket support fasteners are loosened, and the jacket pipe can be hoisted to the predetermined position for overhaul. When the glass-lined inner pipe is damaged and needs to be re-enameled;

[0013] In the utility model, a fully jacketed large glass-lined pipe is described. By cutting the welds at the large and small ends of the jacket pipe and the glass-lined inner pipe, the large end of the glass-lined inner pipe is slowly pulled out of the jacket pipe, and the glass-lined inner pipe can be separated from the jacket pipe, and the glass-lined inner pipe can be repaired or re-enameled. The jacket pipe is equipped with a corrugated expansion joint, exhaust and drain ports, and the small block on the jacket pipe is connected to the fixed support with bolts, which is convenient for disassembly and has a certain thermal expansion margin. In addition, the glass lining and the jacket pipe are connected with a two-half slip-on flange, which is convenient for equipment installation and alignment, as well as disassembly, maintenance and replacement.

[0014] The utility model has a reasonable structural design. By adopting a fully jacketed closed structure, all enameled surfaces of the enameled inner tube are insulated and heat exchanged, ensuring that the entire enameled inner tube is heated evenly. Especially under the working condition of transporting high-temperature (200°C) corrosive gas media, long-term stable operation can be achieved. In addition, elastic structural design is adopted at both ends of the enameled inner tube, and a corrugated expansion joint is added to the jacketed tube to reduce thermal stress to a minimum. In addition, the use of the inner and outer tube sleeve form greatly reduces the welding workload compared to the two-half welding form. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a fully jacketed large glass-lined pipe proposed in the utility model;

[0016] Figure 2 This is a schematic diagram of the glass-lined inner tube and jacketed tube structure proposed in the utility model;

[0017] Figure 3This is a diagram showing the usage status of a conventional enameled jacketed pipe;

[0018] Figure 4 This is a schematic diagram of the installation of glass-lined jacketed pipe;

[0019] Figure 5 This is a schematic diagram of the slip-on flange structure proposed by the utility model;

[0020] Figure 6 This is a schematic diagram of the fixed support structure proposed by the utility model;

[0021] Figure 7 This is a side view of a fully jacketed large glass-lined pipe proposed by the utility model.

[0022] In the figure: 1. Glass-lined inner tube; 2. Jacket tube; 3. Slip-on flange; 4. Exhaust port; 5. Drain port; 6. Warm layer; 8. Jacket tube inlet anti-impact baffle; 9. Jacket inlet; 10. Jacket outlet; 11. No. 1 tube; 12. No. 2 tube; 13. Fixed support; 14. Jacket lifting lug; 15. Small end of glass-lined inner tube; 16. Large end of glass-lined inner tube. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-7 A fully jacketed large glass-lined pipe comprises: a glass-lined inner pipe 1 and a jacket pipe 2, the inner side of the glass-lined inner pipe 1 is provided with a glass-lined inner pipe large end 16 and a glass-lined inner pipe small end 15, and the outer side of the jacket pipe 2 is slidably sleeved on the outer side of the glass-lined inner pipe 1, the outer side of the jacket pipe 2 is fixedly connected with a No. 1 pipe 11 and a No. 2 pipe 12, the inner side of the No. 1 pipe 11 is provided with a jacket inlet 9, the inner side of the No. 2 pipe 12 is provided with a jacket outlet 10, and the outer side of the jacket pipe 2 is fixedly connected with two slip-on flanges 3, and both slip-on flanges 3 have threaded holes on one side.

[0025] In this embodiment, a bellows expansion joint is provided on the outside of the jacket tube 2, a fixing ring is fixedly connected to the outside of the jacket tube 2, an exhaust port 4 and a drain port 5 are provided on the inside of the fixing ring, and the drain port 5 is located at the bottom of the jacket tube 2, and two small blocks are fixedly connected to the outside of the jacket tube 2, and the bottom of the two small blocks are threadedly connected to a fixed support 13 to facilitate supporting the device.

[0026] In this embodiment, two jacket lifting ears 14 are fixedly connected to the outside of the jacket tube 2, and the inside of the two jacket lifting ears 14 are provided with lifting holes, the inside of the jacket tube 2 is provided with a slip-on flange fastener and a jacket support fastener, the outside of the jacket tube 2 is provided with a warm layer 6, and the inside of the glass-lined inner tube 1 is fixedly connected with a jacket tube inlet anti-impact baffle 8 to prevent cooling water from directly eroding the outer surface of the enamel, to avoid excessive local shrinkage of the enamel and damage. The glass-lined inner tube 1 and the jacket tube 2 are both made of corrosion-resistant materials, which can increase the service life of the device.

[0027] In this embodiment, when in use, when installing the equipment, the jacket pipe 2 is slowly inserted from the small end of the glass-lined inner pipe 1 into the position of the large end 16 of the glass-lined inner pipe. After adjusting the positions of the No. 1 pipe 11 and the No. 2 pipe 12, the jacket pipe 2 is welded to the large and small ends of the glass-lined inner pipe 1. After welding, small blocks are installed on the jacket pipe 2, and slip-on flanges 3 are installed at the baffles at both ends of the jacket pipe 2. At this time, the installation is completed. When the equipment is installed on site, the fixed support 13 is installed to the predetermined position, and the pipes are connected with gaskets and slip-on flange fasteners. After the No. 1 pipe 11 and the No. 2 pipe 12 are connected, the operation can be realized. When the equipment is repaired, the slip-on flange fasteners are disassembled and the jacket support fasteners are loosened. , the jacket pipe 2 can be hoisted to the predetermined position for maintenance. When the glass-lined inner tube 1 is damaged and needs to be re-enameled, the welds at the large and small ends of the jacket pipe 2 and the glass-lined inner tube 1 are cut, and the large end 16 of the glass-lined inner tube is slowly pulled out from the jacket pipe 2. The glass-lined inner tube 1 can be separated from the jacket pipe 2, and the enamel of the glass-lined inner tube 1 can be repaired or re-enameled. The jacket pipe 2 is equipped with a bellows expansion joint, exhaust and drain ports. The small block on the jacket pipe 2 is connected to the fixed support 13 with bolts, which is convenient for disassembly and has a certain thermal expansion margin. In addition, the glass lining and the jacket pipe 2 are connected with a two-half slip-on flange, which is convenient for equipment installation and alignment, as well as disassembly, maintenance and replacement.

[0028] The above describes in detail the fully jacketed, large-scale glass-lined pipe provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may, without departing from the principles of the present invention, make various improvements and modifications to the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A fully jacketed large glass-lined pipe, characterized in that: include: A glass-lined inner tube (1) and a jacket tube (2), wherein a glass-lined inner tube large end (16) and a glass-lined inner tube small end (15) are provided on the inner side of the glass-lined inner tube (1), and the outer side of the jacket tube (2) is slidably sleeved on the outer side of the glass-lined inner tube (1), and the outer side of the jacket tube (2) is fixedly connected to a No. 1 pipe (11) and a No. 2 pipe (12), wherein a jacket inlet (9) is provided on the inner side of the No. 1 pipe (11), and a jacket outlet (10) is provided on the inner side of the No. 2 pipe (12), and the outer side of the jacket tube (2) is fixedly connected to two slip-on flanges (3), and threaded holes are provided on one side of the two slip-on flanges (3).

2. A fully jacketed large glass-lined pipe according to claim 1, characterized in that: A corrugated expansion joint is provided on the outside of the jacket tube (2), a fixing ring is fixedly connected to the outside of the jacket tube (2), an exhaust port (4) and a liquid discharge port (5) are provided on the inside of the fixing ring, and the liquid discharge port (5) is located at the bottom of the jacket tube (2).

3. A fully jacketed large glass-lined pipe according to claim 1, characterized in that: Two small blocks are fixedly connected to the outside of the jacket tube (2), and the bottoms of the two small blocks are both threadedly connected to fixed supports (13).

4. A fully jacketed large glass-lined pipe according to claim 1, characterized in that: Two jacket lifting ears (14) are fixedly connected to the outer side of the jacket tube (2), and hanging holes are provided on the inner sides of the two jacket lifting ears (14).

5. The fully jacketed large glass-lined pipe according to claim 1, characterized in that: The inner side of the jacket tube (2) is provided with a slip-on flange fastener and a jacket support fastener, the outer side of the jacket tube (2) is provided with a warm layer (6), and the inner side of the glass-lined inner tube (1) is fixedly connected with a jacket tube inlet anti-collision baffle (8).

6. The fully jacketed large glass-lined pipe according to claim 1, characterized in that: The glass-lined inner tube (1) and the jacketed tube (2) are both made of corrosion-resistant materials.

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