CN-122010046-A - Large vacuum box system for solid hydrogen storage material production line

CN122010046ACN 122010046 ACN122010046 ACN 122010046ACN-122010046-A

Abstract

The invention relates to the field of solid hydrogen storage material preparation equipment, in particular to a large vacuum box system for a solid hydrogen storage material production line, which comprises a main cavity, a carrier roller bracket, a vacuumizing system, an inert gas replacement system and a sealing pressure maintaining device, wherein the main cavity adopts a reinforced anti-deformation structure, the vacuumizing system can quickly reduce the vacuum degree in the cavity to-0.1 MPa, the inert gas replacement system is matched with a flow equalizing component to realize uniform filling of argon in the cavity.

Inventors

HE QISHUANG
Wang Senfu
HE YIXING
JIANG BING
ZHOU HUANAN

Assignees

泉州市云网氢能源科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (6)

1. The large vacuum box system for the solid hydrogen storage material production line is characterized by comprising a vacuum box body, a carrier roller bracket, a vacuumizing system, an inert gas replacement system, a sealing pressure maintaining device and a control system, wherein the carrier roller bracket is divided into a front section, a middle section and a rear section, the middle section is arranged in a main cavity of the vacuum box body, the vacuumizing system and the inert gas replacement system are both communicated with the main cavity, the sealing pressure maintaining device is arranged at a box door of the vacuum box body, and the control system is respectively connected with the vacuumizing system, the inert gas replacement system, the sealing pressure maintaining device and a box door opening and closing circuit; The vacuum box body is formed by welding carbon steel or stainless steel, the volume of a main cavity of the vacuum box body is 1-20m & lt 3 & gt, the whole box body is designed by adopting reinforcing rib deformation prevention, a front gate valve and a rear gate valve are arranged on the vacuum box body, the inner surfaces of the front gate valve and the rear gate valve and the contact surface of the vacuum box body are processed by planer milling or surface grinding, the front gate valve and the rear gate valve can be longitudinally or transversely opened and closed by virtue of guide rails, and the transmission system comprises one or more of pneumatic, hydraulic or motor screw rods.
2. The large vacuum box system for the solid hydrogen storage material production line of claim 1, wherein the idler support is made of stainless steel, and the middle section is arranged in a main cavity of the vacuum box body.
3. The large vacuum box system for the solid hydrogen storage material production line according to claim 2, wherein the vacuumizing system is one or more of a mechanical vacuum pump, a Roots vacuum pump and a diffusion vacuum pump, the vacuumizing system is communicated with the main cavity through a pipeline, a pressure balance valve is arranged on the pipeline, the vacuum degree in the main cavity can be reduced to-0.1 MPa to-0.01 MPa, the vacuumizing time is less than or equal to 30min, and the control panel automatically starts and stops the corresponding vacuum pump according to the target vacuum degree.
4. The large vacuum box system for the solid hydrogen storage material production line according to claim 3, wherein the inert gas replacement system comprises a gas source, an inner balance valve and an outer balance valve, the inner balance valve and the outer balance valve are respectively arranged on two sides of the main cavity, residual air in the cavity is rapidly discharged during replacement, the residual amount of oxygen in the cavity after gas replacement is less than or equal to 0.1%, and the single replacement time is less than or equal to 5min.
5. The large vacuum box system for the solid hydrogen storage material production line of claim 4, wherein the sealing pressure maintaining device comprises a valve sealing gasket, a pre-pressing mechanism and a sealing detection assembly, the sealing gasket is made of one of fluororubber, nitrile rubber or silicone rubber, the pre-pressing mechanism is of a multi-point linkage locking structure, the locking force is one or more of pneumatic, hydraulic or motor screw rods, a pressure sensor is arranged in the vacuum box body, the sealing state of a box door is monitored in real time according to the pressure difference change of the vacuum box body, and when the pressure difference change is more than 10Pa/S, the sealing failure is indicated, and the sealing failure is fed back to a control panel and an alarm is given.
6. The large vacuum box system for the solid hydrogen storage material production line of claim 5, wherein the control system comprises a PLC controller, a touch display screen and an alarm indication, can set time sequence parameters of vacuumizing, gas replacement and opening and closing a box door, realizes full-automatic operation, automatically stops and gives out audible and visual alarm under abnormal working conditions.

Description

Large vacuum box system for solid hydrogen storage material production line Technical Field The invention relates to the field of solid hydrogen storage material preparation equipment, in particular to a large vacuum box system for a solid hydrogen storage material production line. Background The preparation process of the solid hydrogen storage material is completed under the protection of high vacuum and inert gas, the residual impurity gas in the preparation of the material can be removed in the vacuum environment, the inert gas can prevent the material from being oxidized, and the hydrogen storage activity, the cycle life and the structural stability of the hydrogen storage material are ensured, so that the large vacuum box is core equipment of the solid hydrogen storage material production line. However, the existing large vacuum box is not directly adapted to the solid hydrogen storage material production line, and development of a large vacuum box integrating high-efficiency vacuumizing, thorough gas replacement and stable pressure maintaining functions is needed, and the large vacuum box is suitable for the working condition requirements of the solid hydrogen storage material production line, and improves the product quality and the production efficiency. ‌ A The Chinese patent publication No. CN113858589A discloses a vacuum shaping box for processing super-large pipe, which comprises a first box body and a second box body, wherein the first box body and the second box body are communicated, an adjusting component is arranged on the upper surface of one end of the first box body far away from the second box body, a positioning component is arranged in the first box body, the adjusting component is connected with the positioning component, a conveying component is arranged at the bottom end in the second box body, a plurality of spraying components are arranged above the conveying component at the upper end in the second box body, and the vacuum shaping box for processing the super-large pipe is used for shaping and cooling the pipe with high efficiency through the cooperation of the first box body and the second box body. The technology has no functions of replacing gas and stabilizing pressure, and is not suitable for a solid hydrogen storage material production line. Chinese patent publication No. CN115523140a discloses a vacuum system for obtaining high vacuum of a large-scale low-temperature valve box, which comprises two low-temperature valve boxes connected in parallel, the low-temperature valve boxes are connected with a vacuum pump set through a vacuum main pipe, the vacuum main pipe is respectively connected with a first air extraction branch and a second air extraction branch, a liquid nitrogen cold trap is arranged on the first air extraction branch, a gas source steel bottle and a vacuum leak detection device connected in parallel are arranged on the second air extraction branch, and the liquid nitrogen cold trap is connected with the vacuum pump set through the first air extraction branch. The invention can quickly replace and obtain high vacuum in the low Wen Faxiang cavity, can maintain the required ultrahigh vacuum operation environment for a long time, and can ensure that the requirement of the test platform for cooling medium is met under the condition of minimum cooling capacity loss. But the technical method focuses on solving the problems of obtaining a low-temperature vacuum environment, not carrying out rapid gas replacement and coping with the working condition of a complex solid hydrogen storage material production line. Disclosure of Invention Therefore, the invention provides a large vacuum box system for a solid hydrogen storage material production line, aiming at the problems, and solves the problem of poor suitability of the existing vacuum box and the solid hydrogen storage material production line. The large vacuum box system for the solid hydrogen storage material production line comprises a vacuum box body, a carrier roller bracket, a vacuumizing system, an inert gas replacement system, a sealing pressure maintaining device and a control system, wherein the carrier roller bracket is divided into a front section, a middle section and a rear section, the middle section is arranged in a main cavity of the vacuum box body, the vacuumizing system and the inert gas replacement system are both communicated with the main cavity, the sealing pressure maintaining device is arranged at a box door of the vacuum box body, and the control system is respectively connected with the vacuumizing system, the inert gas replacement system, the sealing pressure maintaining device and a box door opening and closing circuit; The vacuum box body is formed by welding carbon steel or stainless steel, the volume of a main cavity of the vacuum box body is 1-20m & lt 3 & gt, the whole box body is designed by adopting reinforcing rib deformation prevention, a front gate valve and a rear gate valv