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CN-122014941-A - Hydrogen energy conveying metal hose with multilayer strong sealing structure

CN122014941ACN 122014941 ACN122014941 ACN 122014941ACN-122014941-A

Abstract

The invention discloses a hydrogen energy conveying metal hose with a multilayer strong sealing structure, which belongs to the technical field of hydrogen energy conveying and comprises a metal hose body, wherein an interface assembly is arranged at one end of the metal hose body, a socket assembly is arranged at the other end of the metal hose body, the socket assembly comprises a mounting ring seat, a first sealing ring is arranged on the inner annular wall of the mounting ring seat, a plurality of differential pressure sensing units are arranged between a second sealing ring and a third sealing ring on the side wall of the mounting ring seat, and a top ring blocking unit is arranged at the top of the mounting ring seat. The metal hose can realize multi-level sealing treatment for conveying hydrogen inside the metal hose, and in the hydrogen conveying process, when a first-level sealing structure is subjected to sealing failure under the superposition of hydrogen embrittlement and mechanical stress, the top ring enclosing unit is triggered to extend out and physically isolate the hydrogen from other-level sealing structures, and meanwhile, active absorption treatment can be carried out on the hydrogen between the second waterproof breathable film and the second-level sealing structure, so that the hydrogen embrittlement process of subsequent sealing is effectively reduced.

Inventors

  • GU HONGJUN
  • JIANG XIAOYAN
  • ZHANG MIN

Assignees

  • 江苏顺邦管业科技有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The hydrogen energy conveying metal hose with the multilayer strong sealing structure is characterized by comprising a metal hose body (201), wherein an interface component is arranged at one end of the metal hose body (201), a socket component is arranged at the other end of the metal hose body, and the socket component at the end part of one hydrogen energy conveying metal hose is detachably and fixedly arranged in the interface component at the end part of the other hydrogen energy conveying metal hose; The socket assembly comprises a mounting ring seat (202), a first sealing ring (206) is arranged on the inner ring wall of the mounting ring seat (202), a second sealing ring (204) and a third sealing ring (205) which are arranged up and down are respectively arranged on the outer ring wall, a plurality of differential pressure sensing units are arranged between the second sealing ring (204) and the third sealing ring (205) on the side wall of the mounting ring seat (202), and a top ring blocking unit is arranged at the top of the mounting ring seat (202); The top ring enclosing unit comprises a telescopic ring seat part which is communicated with the inner cavity of the differential pressure sensing unit, and an air cylinder part is sleeved outside the end part of the ring seat part; The inflator piece comprises a unidirectional channel which can unidirectionally enter air into the inflator piece when the inflator piece synchronously stretches along with the gradually extending annular seat piece, and an air inlet of the unidirectional channel is positioned above the second sealing ring (204); the pressure difference sensing unit comprises a plug body structure, and when the plug body structure is changed from an initial static state to an active state, the plug body structure can press gas in the pressure difference sensing unit into the ring seat piece and drive the ring seat piece to extend out.
  2. 2. The hydrogen energy transfer metal hose with a multi-layer strong seal structure according to claim 1, wherein said interface assembly includes a mounting end cap (227) attached to an end of a metal hose body (201); The differential pressure sensing units are distributed in a circumferential array.
  3. 3. The hydrogen energy transmission metal hose with the multilayer strong sealing structure according to claim 1, wherein the plug body structure comprises a front sealing plug (209), and a front cylinder seat (216) is arranged on one side of the front sealing plug (209); the front cylinder seat (216) is internally provided with a liquid cavity and a connecting cavity respectively, and the liquid cavity and the connecting cavity are communicated with each other; The connecting cavity end is connected with a baffle membrane (222) at the position where the connecting cavity end is communicated with the liquid cavity, the baffle membrane (222) is blocked at the outlet part of the liquid cavity, the liquid cavity is filled with a liquid water medium part (220), and a reaction medium part (221) is arranged in the connecting cavity; A reserved opening is arranged at the position corresponding to the connecting cavity on the side wall of the front cylinder seat (216), and a first waterproof and breathable film (223) is connected to the reserved opening; a jack is formed in one end, close to the connecting cavity, of the front cylinder seat (216), a passive contact pin (224) is inserted in the jack in a sealing sliding mode, and the tip end of the passive contact pin (224) stretches into the connecting cavity and faces the baffle membrane (222); the periphery of the passive contact pin (224) is sleeved with a first spring, one end of the first spring is connected with the end part of the front cylinder seat (216), and the other end of the first spring is connected with the front sealing plug (209); an inward sinking chute is formed in the side wall of the jack, a wedge-shaped clamping block (225) is inserted in the inward sinking chute in a sliding manner, a second spring is further arranged in the inward sinking chute, one end of the second spring is connected with the end part of the inward sinking chute, and the other end of the second spring is connected with one end of the wedge-shaped clamping block (225) extending into the inward sinking chute; a plurality of annular wedge-shaped clamping grooves (226) which are matched with the wedge-shaped ends in the wedge-shaped clamping blocks (225) are uniformly formed in the side wall of the passive contact pin (224).
  4. 4. The hydrogen energy transmission metal hose with the multi-layer strong sealing structure according to claim 3, wherein the pressure difference sensing unit further comprises a column groove which is arranged on the side wall of the mounting ring seat (202) and is arranged between the second sealing ring (204) and the third sealing ring (205), and a partition board is detachably and hermetically connected in the column groove; the front sealing plug (209) is sealed to slide in the column groove, and one end of the front cylinder seat (216) away from the connecting cavity is connected with the partition plate.
  5. 5. The hydrogen energy transfer metal hose with a multi-layer strong sealing structure according to claim 4, wherein said ring seat member includes an annular groove provided at the top of the mounting ring seat (202) and communicating with the column groove; an annular blocking seat (212) is inserted in the annular groove in a sealing and sliding manner; A third spring is further arranged in the annular groove, one end of the third spring is connected with one end of the annular blocking seat (212) extending into the annular groove, and the other end of the third spring is connected with the bottom wall of the annular groove.
  6. 6. The hydrogen energy transmission metal hose with the multilayer strong sealing structure according to claim 5, wherein the inflator piece further comprises an annular organ cylinder cover (213) sleeved and fixed outside the top end of the annular enclosing seat (212), and a hydrogen absorption part (230) for absorbing hydrogen is arranged inside the annular organ cylinder cover (213); An expansion ring groove for accommodating an annular organ cylinder cover (213) is formed in the position, corresponding to the position of the ring groove, of the top end of the mounting ring seat (202), the top wall of the inner cavity of the annular organ cylinder cover (213) is connected with the top end of the annular enclosing seat (212), and the bottom end of the annular organ cylinder cover (213) is connected with the bottom wall of the expansion ring groove; the unidirectional channel comprises a hydrogen absorption pipeline (214), and a unidirectional air inlet valve is arranged on the hydrogen absorption pipeline (214); One end of the hydrogen absorption pipeline (214) is fixedly communicated with the bottom end of the annular organ cylinder cover (213), the other end of the hydrogen absorption pipeline penetrates into the installation ring seat (202) and penetrates through the side wall of the installation ring seat (202), and one end, far away from the annular organ cylinder cover (213), of the installation ring seat (202) is an air inlet of a unidirectional channel.
  7. 7. The hydrogen energy transfer metal hose with the multi-layer strong sealing structure according to claim 4, wherein the pressure difference sensing unit further comprises a rear sealing plug (208), a control circuit board (210), a pressure discharge channel and a second waterproof breathable film (229); the rear sealing plug (208) is hermetically slid in the column groove, and the rear sealing plug (208) and the front sealing plug (209) are respectively positioned at the left side and the right side of the partition plate; one side of the rear sealing plug (208) is provided with a rear insulating cylinder seat (215); An insulating movable rod (219) is inserted at the end part of the rear insulating cylinder seat (215) in a sliding manner, a fourth spring is sleeved on the periphery of the insulating movable rod (219), one end of the fourth spring is connected with the end part of the rear insulating cylinder seat (215), and the other end of the fourth spring is connected with the rear sealing plug (208); One end of the insulation movable rod (219) extending into the inner cavity of the rear insulation cylinder seat (215) is connected with a driven metal spring plate (217); The side wall of the inner cavity of the rear insulating cylinder seat (215) is connected with a fixed excitation contact piece (218), and the surface of the side wall of the fixed excitation contact piece (218) is flush with the surface of the side wall of the inner cavity of the rear insulating cylinder seat (215); one end of the rear insulating cylinder seat (215) far away from the insulating movable rod (219) is connected with the partition plate, and one end of the insulating movable rod (219) far away from the rear insulating cylinder seat (215) is connected with the rear sealing plug (208); The control circuit board (210) is provided with a wireless transmitting module (211), and the control circuit board (210) is fixedly arranged on the partition board; when the fourth spring is in an initial loosening state, the free end in the driven metal elastic sheet (217) is elastically abutted against the surface of the inner cavity side wall of the rear insulation cylinder seat (215), and at the moment, the driven metal elastic sheet (217) and the fixed excitation contact sheet (218) are not contacted with each other; the pressure discharge channel is arranged in the mounting ring seat (202), one end of the pressure discharge channel is communicated with the column groove, one end of the pressure discharge channel, which is communicated with the column groove, corresponds to the rear insulation cylinder seat (215), and the other end of the pressure discharge channel penetrates through the end part of the mounting ring seat (202); The second waterproof breathable film (229) is arranged at one end of the pressure discharge channel away from the column groove and is connected with the end of the mounting ring seat (202).
  8. 8. The hydrogen energy transporting metal hose with the multi-layer strong sealing structure of claim 7, wherein the driven metal spring plate (217) and the fixed excitation sheet (218) are electrically connected with the control circuit board (210), and when the driven metal spring plate (217) is in contact with the fixed excitation sheet (218), the control circuit board (210) is triggered to control the wireless transmitting module (211) to send out an alarm signal.
  9. 9. The hydrogen energy transfer metal hose with the multi-layer strong seal structure according to claim 2, wherein a mounting ring seat (202) in the socket assembly on the end portion of one of said hydrogen energy transfer metal hoses is screwed to the inside of a mounting end cap (227) in the socket assembly on the end portion of the other of said hydrogen energy transfer metal hoses.
  10. 10. The hydrogen energy transmission metal hose with the multilayer strong sealing structure according to claim 2, wherein the end parts of the installation end cover (227) and the installation ring seat (202) are connected with a connecting flange (228), and the connecting flange (228) connected with the end part of the installation ring seat (202) in the socket assembly on the end part of one hydrogen energy transmission metal hose is fixedly connected with the connecting flange (228) connected with the end part of the installation end cover (227) in the interface assembly on the end part of the other hydrogen energy transmission metal hose through bolts.

Description

Hydrogen energy conveying metal hose with multilayer strong sealing structure Technical Field The invention relates to the technical field of hydrogen energy transmission, in particular to a hydrogen energy transmission metal hose with a multi-layer strong sealing structure. Background As the demand for hydrogen energy transportation continues to increase, pipeline transportation is a necessary trend of achieving long-distance and large-scale transportation of hydrogen in the mature stage of the hydrogen energy industry, and is also the most economical way. Metal hoses are an important component in connection lines of modern industrial equipment. The metal hose has good flexibility, repeated bending property, corrosion resistance, high temperature resistance, bending resistance, tensile property and side pressure resistance. Therefore, the metal hose is widely used in hydrogen transportation. At present, when the existing metal hose is used for conveying hydrogen, the joint part of the metal hose is subjected to sealing treatment through common sealing elements such as sealing rings, so that under the condition that the metal hose is used for a long time, the joint part of the metal hose is subjected to mechanical stress such as vibration for a long time, although the sealing elements such as the sealing rings can be used for elastic buffering, after the sealing rings with sealing effect are contacted with the hydrogen conveyed in a pipeline for a long time, the sealing material is easy to deteriorate (namely hydrogen embrittlement) and cause hydrogen embrittlement cracking, and the joint part of the metal hose is easy to be subjected to sealing failure due to the superposition of the hydrogen embrittlement and the long-time mechanical stress, so that the leaked hydrogen is leaked, environmental pollution, personnel poisoning, fire explosion and other disasters can be caused even when serious, and great potential safety hazards exist. In view of this, we propose a hydrogen energy transporting metal hose with a multi-layer strong sealing structure. Disclosure of Invention The invention aims to provide a hydrogen energy conveying metal hose with a multi-layer strong sealing structure, and solves the technical problems in the background technology. The technical scheme of the invention provides a hydrogen energy conveying metal hose with a multi-layer strong sealing structure, which comprises a metal hose body, wherein an interface component is arranged at one end of the metal hose body, a socket component is arranged at the other end of the metal hose body, and the socket component at the end part of one hydrogen energy conveying metal hose is detachably and fixedly arranged in the interface component at the end part of the other hydrogen energy conveying metal hose; The socket assembly comprises a mounting ring seat, a first sealing ring is arranged on the inner ring wall of the mounting ring seat, a second sealing ring and a third sealing ring which are arranged up and down are respectively arranged on the outer ring wall, a plurality of differential pressure sensing units are arranged between the second sealing ring and the third sealing ring on the side wall of the mounting ring seat, a top ring enclosing unit is arranged on the top of the mounting ring seat, wherein the first sealing ring is of a first-level sealing structure, the second sealing ring is of a second-level sealing structure, and the third sealing ring is of a third-level sealing structure; The top ring enclosing unit comprises a telescopic ring seat part which is communicated with the inner cavity of the differential pressure sensing unit, and an air cylinder part is sleeved outside the end part of the ring seat part; The air cylinder piece comprises a unidirectional channel which can unidirectionally enter air into the air cylinder piece when the air cylinder piece synchronously stretches along with the gradually extending annular seat piece, and an air inlet of the unidirectional channel is positioned above the second sealing ring; The pressure difference sensing unit comprises a plug body structure, and when the plug body structure is changed from an initial static state to an active state, the plug body structure can press gas in the pressure difference sensing unit into the ring seat piece and drive the ring seat piece to extend out. As an alternative to the technical solution of the present invention, the interface assembly includes a mounting end cap connected to the end of the metal hose body; The differential pressure sensing units are distributed in a circumferential array. As an alternative scheme of the technical scheme of the invention, the plug body structure comprises a front sealing plug, and one side of the front sealing plug is provided with a front cylinder seat; The front cylinder seat is internally provided with a liquid cavity and a connecting cavity respectively, and the liquid cavity and the connecting cavity are co