High-pressure-bearing type end socket structure

Abstract

The utility model provides a high-pressure-bearing type end socket structure which is used for being matched with a high-pressure type printed circuit board heat exchanger to meet the requirements of special working conditions such as high temperature and high pressure. The end socket structure comprises an end socket, a companion flange and an outer-layer sealing ring rubber mat, the end socket comprises a first flange plate, a round connecting pipe and a square-top and round-bottom structure, the companion flange comprises a second flange plate and a special-shaped connecting pipe, the second flange plate is connected with the first flange plate through a bolt, and the outer-layer sealing ring rubber mat is located between the first flange plate and the second flange plate. An inner-layer sealing ring rubber mat is further arranged between the first flange plate and the second flange plate. The inner-layer sealing ring rubber mat and the outer-layer sealing ring rubber mat form double-layer sealing, the sealing performance of a product is further guaranteed, heat exchange media are prevented from leaking, the end socket and the companion flange are each of an integrated structure and are machined and manufactured after being integrally forged, and the sealing performance of the product is improved. And the bearing capacity is high, the strength is high, and the device can be suitable for conditions with special working condition requirements.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to a high-pressure bearing head structure adapted to a high-pressure printed circuit board heat exchanger. Background Art

[0002] Printed circuit board heat exchanger is a new type of microchannel plate heat exchanger with the advantages of compact structure, high heat transfer efficiency, high temperature and high pressure resistance, and pressure resistance up to 60MPa. It is widely used in power generation, LNG ships, gas turbines, hydrogen stations, heat pumps and other fields, and has advantages that conventional heat exchangers cannot match.

[0003] The heat exchanger inlet and outlet pipes are used for the cold and hot side media to enter the heat exchange plate to form convection and achieve heat exchange. Printed circuit board heat exchangers are often used in high temperature and high pressure environments, so the requirements for the pipe structure are also high. The medium inlet and outlet structure with high temperature and high pressure resistance and good sealing structure is of great significance to improving the reliability of printed circuit board heat exchangers and promoting the development of printed circuit board heat exchangers. Summary of the invention

[0004] In view of this, in order to meet the requirements of high temperature, high pressure resistance and high reliability of printed circuit board heat exchangers, the utility model provides a high pressure-bearing head structure, which is mainly used in conjunction with high-pressure printed circuit board heat exchangers to meet the requirements of special working conditions such as high temperature and high pressure.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is a high pressure-bearing head structure, including:

[0006] The sealing head comprises a first flange, a circular connecting pipe, and a square-and-round structure connected in sequence;

[0007] A matching flange, wherein the matching flange comprises a second flange and a special-shaped pipe connected in sequence, and the second flange is connected to the first flange by bolts;

[0008] An outer sealing ring rubber pad with bolt holes is also arranged between the first flange and the second flange.

[0009] Furthermore, a first sealing groove is provided on the first flange, the first sealing groove is located on the inner side of the outer sealing ring gasket, a second sealing groove is provided on the second flange at a position corresponding to the first sealing groove, and an inner sealing ring gasket is arranged in the sealing groove formed by the first sealing groove and the second sealing groove.

[0010] Furthermore, the first flange, the circular connecting pipe and the round structure are integrally formed by machining forgings.

[0011] Furthermore, the second flange and the special-shaped connecting pipe are integrally formed by machining the forgings.

[0012] Preferably, the mating flange and the sealing head are made of the same material.

[0013] Preferably, the inner sealing ring rubber pad and the outer sealing ring rubber pad have the same thickness.

[0014] Preferably, the cross-sections of the first sealant groove and the second sealant groove are both isosceles trapezoidal.

[0015] Due to the adoption of the above technical solution, the beneficial technical effects of the utility model are:

[0016] The high-pressure head structure of the utility model is used in conjunction with a high-pressure printed circuit board heat exchanger to meet the requirements of special working conditions such as high temperature and high pressure. The matching flange, the inner sealing ring gasket, and the head together constitute the medium inlet and outlet cavity structure of the printed circuit board heat exchanger. The inner sealing ring gasket and the outer sealing ring gasket form a double-layer seal, which further ensures the sealing of the product and prevents leakage of the heat exchange medium. The head and the matching flange are both one-piece structures, which are manufactured by one-piece forging and then machining, have high pressure bearing capacity and high strength, and can be applied to situations with special working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the high pressure bearing head structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross section of the middle head;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the middle head in A direction

[0020] Figure 4 for Figure 1 Schematic cross-sectional view of the matching flange;

[0021] Figure 5 for Figure 1 A three-dimensional diagram of the middle and outer sealing rings and rubber pads;

[0022] Figure 6 for Figure 5 A cross-sectional schematic diagram of an outer sealing ring gasket;

[0023] Figure 7 It is a three-dimensional diagram of the inner sealing ring rubber pad in the utility model;

[0024] Figure 8 for Figure 7 A schematic cross-sectional view of an inner sealing ring gasket;

[0025] Figure numerals: 1-head, 2-outer sealing ring gasket, 3-matching flange, 4-first flange, 5-circular connecting pipe, 6-square and round structure, 7-first sealing groove, 8-first screw hole, 9-second screw hole, 10-second sealing groove, 11-bolt hole, 12-inner sealing ring gasket. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through preferred embodiments.

[0027] Please see attached Figure 1-8 As shown, this embodiment provides a high pressure-bearing head 1 structure, including:

[0028] The sealing head 1 comprises a first flange 4, a circular pipe 5, and a square-and-round structure 6 connected in sequence;

[0029] The matching flange 3 includes a second flange plate and a special-shaped pipe connected in sequence, and the second flange plate is connected to the first flange plate 4 by bolts;

[0030] An outer sealing ring rubber pad 2 having bolt holes 11 is also provided between the first flange 4 and the second flange;

[0031] A first sealing groove 7 is provided on the first flange 4 and is located on the inner side of the outer sealing ring rubber pad 2. A second sealing groove 10 is provided on the second flange at a position corresponding to the first sealing groove 7. An inner sealing ring rubber pad 12 is arranged in the sealing groove formed by the first sealing groove 7 and the second sealing groove 10.

[0032] In this embodiment, the head 1 and the printed circuit board heat exchanger are connected by welding. The matching flange 3, the inner sealing ring gasket 12, and the head 1 together constitute the medium inlet and outlet cavity structure of the printed circuit board heat exchanger. The inner sealing ring gasket 12 and the outer sealing ring gasket 2 form a double-layer seal, which further ensures the sealing of the product and prevents leakage of the heat exchange medium.

[0033] In this embodiment, the first screw hole 8 opened on the first flange 4 corresponds to the second screw hole 9 opened on the second flange and the bolt hole 11 on the outer sealing ring rubber. The head 1 and the matching flange 3 are pressed and fixed by bolt connection to ensure that the medium does not leak.

[0034] Specifically, the first flange 4, the round pipe 5, and the round structure 6 are integrally formed by forgings; the second flange and the special-shaped pipe are integrally formed by forgings. The head 1 and the matching flange 3 are both manufactured by integral forging and then machining, and have high pressure bearing capacity and high strength, and can be applied to situations with special working conditions.

[0035] Specifically, the mating flange 3 and the sealing head 1 are made of the same material, the inner sealing ring gasket 12 and the outer sealing ring gasket 2 are of the same thickness, and the cross-sections of the first sealing rubber groove 7 and the second sealing rubber groove 10 are both isosceles trapezoids.

[0036] The high pressure-bearing head 1 structure of the utility model is designed and evaluated for stress strength according to the internationally common large-scale structural analysis software ANSYS15.0 and JB / T4732-2005 "Steel Pressure Vessels - Analysis and Design Standards" to determine the optimal structure. The thickness of the outer sealing ring gasket 2 and the inner sealing ring gasket 12 are both 2d+Δd, and the same material is used, where d is half the thickness of the inner sealing ring gasket 12, and Δd is the thickness margin deviation of the inner sealing ring gasket 12. The value of Δd is determined according to the material of the inner sealing ring gasket 12, the range of d value, and the application conditions.

[0037] The above description is a preferred embodiment of the present invention, which is used to explain the technical solution of the present invention. Those skilled in the art can also make routine modifications, equivalent substitutions and improvements within the spirit and principles of the present invention.

Claims

1. A high pressure bearing head structure, characterized in that: include: The sealing head comprises a first flange, a circular connecting pipe and a square-and-round structure connected in sequence; A matching flange, wherein the matching flange comprises a second flange and a special-shaped pipe connected in sequence, and the second flange is connected to the first flange by bolts; An outer sealing ring rubber gasket with bolt holes is also provided between the first flange and the second flange; A first sealing groove is provided on the first flange, and the first sealing groove is located on the inner side of the outer sealing ring gasket. A second sealing groove is provided on the second flange at a position corresponding to the first sealing groove, and an inner sealing ring gasket is arranged in the sealing groove formed by the first sealing groove and the second sealing groove.

2. The high pressure bearing head structure according to claim 1 is characterized in that: The inner sealing ring rubber pad and the outer sealing ring rubber pad have the same thickness.

3. The high pressure bearing head structure according to claim 1 is characterized in that: The cross-sections of the first sealant groove and the second sealant groove are both isosceles trapezoidal.

4. The high pressure bearing head structure according to claim 1 is characterized in that: The first flange, the circular connecting pipe and the round structure are integrally formed by machining of forgings.

5. The high pressure bearing head structure according to claim 1 is characterized in that: The second flange and the special-shaped pipe are integrally formed by machining of forgings.

6. The high pressure bearing head structure according to claim 1 is characterized in that: The mating flange and the sealing head are made of the same material.

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