Instrument tube intensive lead-out structure of an air separation device

Abstract

The utility model provides an instrument pipe intensive leading-out structure of air separation equipment, including cold box board, connecting aluminium plate, angle steel ring, heat -proof sealing washer and fastener, the cold box board is equipped with the rectangular opening of adapting with angle steel ring, angle steel ring is sealedly connected with the rectangular opening of cold box board, the connecting aluminium plate periphery is sealedly connected with angle steel ring through fastener, heat -proof sealing washer is located between connecting aluminium plate with angle steel ring, be equipped with a plurality of instrument pipe leading-out hole on connecting aluminium plate. The utility model does not need to use flange connection, has saved manufacturing and construction cost, and the cost is low, and the instrument pipe is arranged in pieces in concentration, and instrument valve operation is convenient, and the instrument is concentratedly arranged or led to the central control room outside the cold box, and the instrument pipe and instrument valve are fixed on the connecting aluminium plate, and the heat -proof structure is equipped between connecting aluminium plate and cold box board, guarantees the safety and stability of cold box board.

Description

Technical Field

[0001] This utility model relates to the field of air separation equipment, and in particular to a compact lead-out structure for instrument tubes in an air separation equipment. Background Technology

[0002] The equipment and piping inside the cold box of existing air separation units are all made of aluminum alloy, so the measuring instrument tubes for parameters such as pressure, resistance, analysis, flow, and level in the system are also made of aluminum alloy. The number of measuring points in the cold box varies from approximately 30 to 300 depending on the air separation project. The conventional practice is to use a flange with a sealing ring to allow each instrument tube to exit the cold box. The flange is welded to the cold box plate, and the instrument tube is led out through the flange hole. However, this method results in high flange manufacturing and processing costs, as well as high on-site installation costs. Furthermore, the direct contact between the cryogenic liquid instrument tube and the flange and cold box plate when exiting the cold box poses a risk of frost formation and cracking of the cold box plate. Utility Model Content

[0003] To address the problems of high processing and construction costs and the tendency for cold box panels to freeze and crack in existing technologies, this utility model provides a compact instrument tube lead-out structure for air separation units that is low in manufacturing cost, easy to construct, and prevents cold box panels from freezing and cracking.

[0004] This utility model provides a compact instrument tube lead-out structure for an air separation unit, including a cold box plate, a connecting aluminum plate, an angle steel ring, an insulating sealing gasket, and fasteners. The cold box plate has a rectangular opening adapted to the angle steel ring, and the angle steel ring is sealed to the rectangular opening of the cold box plate. The outer periphery of the connecting aluminum plate is sealed to the angle steel ring through the fasteners. The insulating sealing gasket is disposed between the connecting aluminum plate and the angle steel ring. The connecting aluminum plate has multiple instrument tube lead-out holes.

[0005] As a further improvement of this utility model, the instrument tube integrated lead-out structure of the air separation unit also includes an instrument valve fixed on the connecting aluminum plate. The instrument valve has an inlet connected to the instrument lead-out pipe and an outlet connected to the instrument.

[0006] As a further improvement of this utility model, the connecting aluminum plate is also provided with an instrument valve bracket, and the instrument valve is fixed on the instrument valve bracket.

[0007] As a further improvement of this utility model, the instrument valve bracket is provided with an instrument nameplate corresponding to the instrument valve.

[0008] As a further improvement of this utility model, the fastener includes a fixing bolt and a locking nut adapted to the fixing bolt.

[0009] As a further improvement of this utility model, the instrument tube integrated lead-out structure of the air separation unit also includes a rain shelter and a rain shelter bracket. One end of the rain shelter is fixed to the cold box plate and located above the aluminum plate. One end of the rain shelter bracket is connected to the lower end of the rain shelter, and the other end of the rain shelter bracket is connected to the cold box plate.

[0010] As a further improvement of this utility model, the angle steel ring includes an annular steel ring and an annular steel ring connecting plate perpendicularly disposed on one side of the annular steel ring, and the annular steel ring is sealed to the cold box plate through the annular steel ring connecting plate.

[0011] As a further improvement of this utility model, the instrument valve bracket is provided in two parallel positions and fixed on the connecting aluminum plate.

[0012] The beneficial effects of this utility model are: this utility model does not require the use of flange connection, which saves manufacturing and construction costs, has a low cost, and the instrument pipes are arranged in a concentrated area, which facilitates the operation of instrument valves and the centralized arrangement of external instruments in the cold box or their connection to the central control room. Moreover, the instrument pipes and instrument valves are fixed on the connecting aluminum plate, and a heat insulation structure is provided between the connecting aluminum plate and the cold box plate to ensure the safety and stability of the cold box plate. Attached Figure Description

[0013] Figure 1 This is a plan view of the instrument tube integrated lead-out structure of an air separation device according to this utility model; Figure 2 yes Figure 1 Cross-sectional view at point AA; Figure 3 This is an exploded structural diagram of the instrument tube integrated lead-out structure of an air separation device according to this utility model.

[0014] Reference numerals: 1-Cold box plate; 2-Connecting aluminum plate; 3-Angle steel ring; 4-Insulation sealing gasket; 5-Fastener; 6-Instrument valve; 7-Instrument valve bracket; 8-Instrument lead-out pipe; 9-Rain shelter; 10-Rain shelter bracket; 11-Rectangular opening; 12-Instrument nameplate; 13-Annular steel ring; 14-Annular steel ring connecting plate. Detailed Implementation

[0015] In the description of this utility model, it should be understood that if there are descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationship, the orientation description may be based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0016] In the description of this utility model, if there is a description of quantity, "several" means one or more, "more than" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, while "above," "below," "within," etc. are understood to include the number itself. If there is a description of "first" or "second," it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0017] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] like Figures 1 to 3 As shown, this utility model discloses a compact instrument tube lead-out structure for an air separation unit, including a cold box plate 1, a connecting aluminum plate 2, an angle steel ring 3, an insulating sealing gasket 4, and fasteners 5. The cold box plate 1 is provided with a rectangular opening 11 adapted to the angle steel ring 3. The angle steel ring 3 is sealed to the rectangular opening 11 of the cold box plate 1. The outer periphery of the connecting aluminum plate 2 is sealed to the angle steel ring 3 through the fasteners 5. The insulating sealing gasket 4 is provided between the connecting aluminum plate 2 and the angle steel ring 3. The connecting aluminum plate 2 is provided with multiple instrument tube lead-out holes.

[0019] One end of the angle steel ring 3 is connected to the rectangular opening 11 of the cold box plate 1 by a sealing weld. The connecting aluminum plate 2 is sealed to the angle steel ring 3 by fasteners 5 and heat-insulating sealing gaskets 4 to ensure the sealing inside the cold box. The connecting aluminum plate 2 is resistant to low temperatures and has no risk of freezing and cracking. The heat-insulating sealing gasket 4 between it and the angle steel ring 3 can make the connecting aluminum plate 2 and the angle steel ring 3 have a heat insulation effect, preventing the cold energy of the instrument tube from being conducted to the angle steel ring 3 and the cold box plate 1 through the connecting aluminum plate 2, causing damage to the cold box plate 1. The instrument tube is led out through the hole and welded by a sealing weld to ensure the airtightness.

[0020] In this invention, the instrument tube integrated lead-out structure of the air separation unit also includes an instrument valve 6 fixed on the connecting aluminum plate 2. The instrument valve 6 has an inlet connected to the instrument lead-out pipe 8 and an outlet connected to the instrument. The instrument is connected to the outlet of the instrument valve 6, and the instrument valve 6 can open and close the instrument tube for convenient maintenance. Of course, the outlet can also be directly led to the central control room, so that the instrument can be installed in the central control room for convenient monitoring.

[0021] In this utility model, the connecting aluminum plate 2 is also provided with an instrument valve bracket 7, and the instrument valve 6 is fixed on the instrument valve bracket 7 for easy fixing of the instrument valve 6. In this example, the instrument valve bracket 7 is welded to the connecting aluminum plate 2, and the instrument valve 6 is fixed on the instrument valve bracket 7 by bolts.

[0022] In this utility model, the instrument valve bracket 7 is provided with an instrument nameplate 12 corresponding to the instrument valve 6, and the instrument nameplate 12 is fixed on the instrument valve bracket 7 by spot welding.

[0023] In this utility model, the fastener 5 includes a fixing bolt and a locking nut adapted to the fixing bolt.

[0024] In this invention, the instrument pipe convergence structure of the air separation unit also includes a rain shelter 9 and a rain shelter bracket 10. One end of the rain shelter 9 is fixed to the cold box plate 1 and located above the aluminum plate. One end of the rain shelter bracket 10 is connected to the lower end of the rain shelter 9, and the other end of the rain shelter bracket 10 is connected to the cold box plate 1. The rain shelter 9 protects the instruments and electrical components below from sun and rain, thus ensuring their long-term reliable performance. Both the rain shelter 9 and the rain shelter bracket 10 are welded and fixed.

[0025] In this utility model, the angle steel ring 3 includes an annular steel ring 13 and an annular steel ring connecting plate perpendicularly disposed on one side of the annular steel ring 13. The annular steel ring 13 is sealed to the cold box plate 1 through the annular steel ring connecting plate.

[0026] In this utility model, the instrument valve bracket 7 is provided in two parallel and fixed on the connecting aluminum plate 2, which can fix multiple instrument valves 6.

[0027] This utility model eliminates the need for flange connections, saving manufacturing and construction costs and reducing costs. The instrument pipes are arranged in a concentrated area, facilitating the operation of the instrument valves 6 and allowing for the centralized arrangement of external instruments in the cold box or their connection to the central control room. Furthermore, the instrument pipes and instrument valves 6 are fixed on the connecting aluminum plate 2, and a heat insulation structure is provided between the connecting aluminum plate 2 and the cold box plate 1, ensuring the safety and stability of the cold box plate 1.

[0028] This utility model has a simple structure, is easy to construct, is safe and reliable, and is neat and beautiful.

[0029] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An instrument pipe intensive lead-through structure for an air separation plant, characterized by: The device includes a cold box panel, a connecting aluminum plate, an angle steel ring, an insulating sealing gasket, and fasteners. The cold box panel has a rectangular opening that matches the angle steel ring. The angle steel ring is sealed to the rectangular opening of the cold box panel. The outer periphery of the connecting aluminum plate is sealed to the angle steel ring through the fasteners. The insulating sealing gasket is located between the connecting aluminum plate and the angle steel ring. The connecting aluminum plate has multiple instrument tube outlet holes.

2. The instrument pipe set extraction structure of the air separation apparatus according to claim 1, characterized by: The instrument tube integrated lead-out structure of the air separation unit also includes an instrument valve fixed on the connecting aluminum plate. The instrument valve has an inlet connected to the instrument lead-out pipe and an outlet connected to the instrument.

3. The instrument pipe set extraction structure of the air separation apparatus according to claim 2, characterized by: The connecting aluminum plate is also provided with an instrument valve bracket, and the instrument valve is fixed on the instrument valve bracket.

4. The instrument pipe set extraction structure of the air separation apparatus according to claim 3, characterized by: The instrument valve bracket is equipped with an instrument nameplate corresponding to the instrument valve.

5. The instrument tube integrated lead-out structure of the air separation unit according to claim 1, characterized in that: The fasteners include a fixing bolt and a lock nut adapted to the fixing bolt.

6. The instrument tube integrated lead-out structure of the air separation unit according to claim 1, characterized in that: The instrument tube integrated lead-out structure of the air separation unit also includes a rain shelter and a rain shelter bracket. One end of the rain shelter is fixed to the cold box plate and located above the aluminum plate. One end of the rain shelter bracket is connected to the lower end of the rain shelter, and the other end of the rain shelter bracket is connected to the cold box plate.

7. The instrument pipe set extraction structure of the air separation apparatus according to claim 1, characterized by: The angle steel ring includes an annular steel ring and an annular steel ring connecting plate perpendicularly disposed on one side of the annular steel ring. The annular steel ring is sealed to the cold box plate through the annular steel ring connecting plate.

8. The instrument tube integrated lead-out structure of the air separation unit according to claim 3, characterized in that: The instrument valve bracket is provided in two parts and is fixed in parallel on the connecting aluminum plate.

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