Cold box wall pipe orifice connecting piece

Abstract

The utility model relates to the technical field of pipe orifice connection, in particular to a cold box wall pipe orifice connecting piece which comprises a cold box, an inner pipe, a heat insulation pad, a first flange, an outer pipe, a second flange, a pressing ring, a sealing ring, a first fastening piece and a second fastening piece. Wherein the axis of the inner pipe and the axis of the outer pipe are collinear; an inner pipe is fixedly arranged on the cold box, the inner pipe is communicated with the interior of the cold box and the exterior of the cold box, the inner pipe is sleeved with the heat insulation pad, one side of the heat insulation pad is fixedly arranged on the outer wall of the cold box, a sealing ring is fixedly arranged on the other side of the heat insulation pad, and the sealing ring and the heat insulation pad are sleeved with the first flange; the second flange comprises a first head end and a first tail end, the outer pipe is fixedly sleeved with the first head end, and the first tail end is connected to the side, close to the second flange, of the first flange through a first fastener; the sealing performance of the gasket is remarkably improved, the leakage risk is reduced, and therefore the stability and safety of a cold box system are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe orifice connection, in particular to a cold box wall pipe orifice connector. Background Art

[0002] In a cryogenic device, the temperature of the pipes in the cold box is extremely low, and the traditional carbon steel cold box wall has limited low temperature resistance, which may lead to a significant temperature gradient at the inlet and outlet of the pipe. In addition, the original pipe fittings, a set of bolts is used to tighten two gaskets at the same time. This design has a potential risk of leakage. In order to meet this challenge, we urgently need to provide an improved structure that significantly reduces the temperature gradient at the inlet and outlet of the pipe, thereby improving the overall performance and safety of the cold box. Utility Model Content

[0003] The utility model aims to provide a cold box wall pipe port connector to address the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The first aspect of the utility model is to provide a cold box wall pipe port connector, comprising:

[0006] Cold box, inner tube, heat insulation pad, first flange, outer tube, second flange, pressure ring, sealing ring, first fastener, and second fastener; wherein,

[0007] The axis of the inner tube is collinear with the axis of the outer tube;

[0008] The inner tube is fixedly arranged on the cold box, the inner tube connects the inside of the cold box with the outside of the cold box, the thermal insulation pad is sleeved on the outside of the inner tube, one side of the thermal insulation pad is fixedly arranged on the outer wall of the cold box, a sealing ring is fixedly arranged on the other side of the thermal insulation pad, and the first flange is sleeved on the sealing ring and the outside of the thermal insulation pad;

[0009] The second flange includes: a first head end and a first tail end, the first head end is fixedly sleeved outside the outer tube, and the first tail end is connected to a side of the first flange close to the second flange through the first fastener;

[0010] A groove is formed on one side of the first flange close to the sealing ring and the second flange;

[0011] The pressing ring includes: a second head end and a second tail end, the second head end is arranged in the groove, and the second tail end is connected to a side of the first flange close to the pressing ring through the second fastener.

[0012] Preferably, a first sealing ring is provided between the groove and the second head end.

[0013] Preferably, a second sealing ring is provided between the sealing ring and the first head end.

[0014] Preferably, the wall surface of the cold box is filled with pearlescent sand.

[0015] Preferably, the outer wall of the outer tube is coated with thermal insulation cotton.

[0016] Preferably, the pressure ring is L-shaped.

[0017] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0018] In order to further reduce the risk of cold escape caused by temperature difference at the connection, the utility model adds a thermal insulation pad at the connection between the cold box wall and the pipeline. This improvement effectively reduces the possibility of heat transfer from the inside of the cold box to the outside, thereby improving the problem of cold escape at the connection and improving the thermal insulation performance of the entire cold box system. The utility model adopts a separate fastening method in the improved structure. By providing each gasket with an independent fastening bolt, the sealing performance of the gasket is significantly improved, the risk of leakage is reduced, and the stability and safety of the cold box system are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] The accompanying drawings of the present utility model are as follows:

[0021] Cold box 1, inner tube 2, insulation pad 3, first flange 4, outer tube 5, second flange 6, pressure ring 7, sealing ring 8, second sealing ring 9, first sealing ring 10, second fastener 11, first fastener 12, pearl sand 13, thermal insulation cotton 14. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model will be described in detail below.

[0023] Unless otherwise defined, the technical or scientific terms used in the claims and the specification shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.

[0024] The words "include" or similar words used in the patent application specification and claims of this utility model mean that the items appearing before "include" include the items listed after "include" or their equivalents, and do not exclude other items.

[0025] The numerical values ​​mentioned in the present invention include all numerical values ​​that increase from low to high by one unit, and it is assumed here that there are at least two units between any lower value and the higher value. For example, if a component or a physical quantity is from 1 to 100, 10 to 90 is better, and 20 to 80 is the best, it is intended to express that 5 to 95, 14 to 76, 23 to 67, 32 to 58, 41 to 49 and other numerical values ​​have been clearly listed in this specification; for values ​​less than 1, 0.0001, 0.001, 0.01 or 0.1 are considered to be a more appropriate unit. The above examples are for illustrative purposes only. In fact, all numerical combinations between the lowest value and the highest value listed are considered to be clearly listed in this specification in a similar manner.

[0026] Example

[0027] This embodiment provides a cold box wall pipe port connector, including:

[0028] Cold box 1, aluminum inner tube 2, epoxy resin insulation pad 3, flange 4, stainless steel outer tube 5, stainless steel flange 6, L-shaped pressure ring 7, sealing ring 8, first fastener 12, and second fastener 11; wherein,

[0029] The axis of the aluminum inner tube 2 is arranged colinearly with the axis of the stainless steel outer tube 5;

[0030] The aluminum inner tube 2 is fixedly arranged on the cold box 1, and the aluminum inner tube 2 communicates the inside of the cold box 1 with the outside of the cold box 1. The epoxy resin thermal insulation pad 3 is sleeved on the outside of the aluminum inner tube 2. One side of the epoxy resin thermal insulation pad 3 is fixedly arranged on the outer wall of the cold box 1. A sealing ring 8 is fixedly arranged on the other side of the epoxy resin thermal insulation pad 3. The flange 4 is sleeved on the sealing ring 8 and the outside of the epoxy resin thermal insulation pad 3.

[0031] The stainless steel flange 6 includes: a first head end and a first tail end, the first head end is fixedly sleeved outside the stainless steel outer tube 5, and the first tail end is connected to the side of the flange 4 close to the stainless steel flange 6 through the first fastener 12;

[0032] The wall surface of the cold box 1 is filled with pearl sand 13, and the outer wall of the stainless steel outer tube 5 is covered with thermal insulation cotton 14;

[0033] A groove is formed on one side of the flange 4 close to the sealing ring 8 and the stainless steel flange 6;

[0034] Wherein, a first sealing ring 10 is provided between the groove and the second head end;

[0035] The L-shaped pressing ring 7 includes: a second head end and a second tail end, the second head end is arranged in the groove, and the second tail end is connected to the side of the flange 4 close to the L-shaped pressing ring 7 through the second fastener 11;

[0036] Wherein, a second sealing ring 9 is arranged between the sealing ring 8 and the first head end.

[0037] When in use, the stainless steel flange 6 is connected to the side of the flange flange 4 close to the stainless steel flange 6 by the first fastener 12, and the L-shaped pressure ring 7 is connected to the side of the flange flange 4 close to the L-shaped pressure ring 7 by the second fastener 11; a first sealing ring 10 is arranged between the groove and the second head end, and a second sealing ring 9 is arranged between the sealing ring 8 and the first head end. The arrangement of the first sealing ring 10 and the second sealing ring 9 can increase the sealing performance of the connector.

[0038] In order to further reduce the risk of cold escape caused by temperature difference at the connection, the utility model adds a thermal insulation pad at the connection between the cold box wall and the pipeline. This improvement effectively reduces the possibility of heat transfer from the inside of the cold box to the outside, thereby improving the problem of cold escape at the connection and improving the thermal insulation performance of the entire cold box system. The utility model adopts a separate fastening method in the improved structure. By providing each gasket with an independent fastening bolt, the sealing performance of the gasket is significantly improved, the risk of leakage is reduced, and the stability and safety of the cold box system are enhanced.

[0039] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold box wall pipe port connector, characterized in that: include: A cold box (1), an inner tube (2), a heat insulating pad (3), a first flange (4), an outer tube (5), a second flange (6), a pressure ring (7), a sealing ring (8), a first fastener (12), and a second fastener (11); wherein: The axis of the inner tube (2) and the axis of the outer tube (5) are arranged colinearly; The inner tube (2) is fixedly arranged on the cold box (1), the inner tube (2) connects the inside of the cold box (1) with the outside of the cold box (1), the thermal insulation pad (3) is sleeved outside the inner tube (2), one side of the thermal insulation pad (3) is fixedly arranged on the outer wall of the cold box (1), a sealing ring (8) is fixedly arranged on the other side of the thermal insulation pad (3), and the first flange (4) is sleeved outside the sealing ring (8) and the thermal insulation pad (3); The second flange (6) comprises: a first head end and a first tail end, the first head end being fixedly sleeved outside the outer tube (5), and the first tail end being connected to a side of the first flange (4) close to the second flange (6) through the first fastener (12); A groove is formed on one side of the first flange (4) close to the sealing ring (8) and the second flange (6); The pressure ring (7) comprises: a second head end and a second tail end, the second head end is arranged in the groove, and the second tail end is connected to the side of the first flange (4) close to the pressure ring (7) through the second fastener (11).

2. The cold box wall pipe port connector according to claim 1, characterized in that: A first sealing ring (10) is arranged between the groove and the second head end.

3. The cold box wall pipe port connector according to claim 1, characterized in that: A second sealing ring (9) is provided between the sealing ring (8) and the first head end.

4. The cold box wall pipe port connector according to claim 1, characterized in that: The wall surface of the cold box (1) is filled with pearlescent sand (13).

5. The cold box wall pipe opening connector according to claim 1, characterized in that: The outer wall of the outer tube (5) is coated with thermal insulation cotton (14).

6. The cold box wall pipe opening connector according to claim 1, characterized in that: The pressure ring (7) is L-shaped.

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