阅读说明：本技术 一种圆筒形干式氢气柜 (Cylindrical dry-type hydrogen cabinet ) 是由 高海平 李朋 白兴辉 周伟 钱力 于 2021-09-24 设计创作，主要内容包括：本发明涉及一种圆筒形干式氢气柜,属于氢气储存技术领域,包括筒体,筒体内设有活塞,活塞通过设置在其周向的活塞导轮沿筒体侧板上下运动；活塞通过设置在其周向的活塞密封装置实现与筒体侧板的可动密封,活塞密封装置通过杠杆配重机构加力将密封橡胶压紧筒体侧板,并向位于由活塞、活塞密封装置和活塞侧板围成的活塞油沟内灌注一定高度的稀油以实现无水密封。本发明的储气压力由活塞和活塞密封装置的自重自动产生,实现了氢气的低压储存,且不会给氢气增湿,储气压力可达20kPa,同时具有安全性高、耗能低的特点。(The invention relates to a cylindrical dry-type hydrogen cabinet, which belongs to the technical field of hydrogen storage and comprises a cylinder, wherein a piston is arranged in the cylinder and moves up and down along a side plate of the cylinder through a piston guide wheel arranged in the circumferential direction of the piston; the piston realizes movable sealing with the cylinder side plate through a piston sealing device arranged on the periphery of the piston, the piston sealing device compresses the cylinder side plate through sealing rubber under the stress of a lever counterweight mechanism, and thin oil with a certain height is filled into a piston oil groove formed by the piston, the piston sealing device and the piston side plate to realize anhydrous sealing. The gas storage pressure of the invention is automatically generated by the dead weight of the piston and the piston sealing device, the low-pressure storage of hydrogen is realized, the humidification of hydrogen is avoided, the gas storage pressure can reach 20kPa, and the invention has the characteristics of high safety and low energy consumption.)

1. A cylindrical dry-type hydrogen cabinet is characterized in that: the piston moves up and down along a side plate of the cylinder body through a piston guide wheel arranged on the circumference of the piston; the piston realizes movable sealing with the cylinder side plate through a piston sealing device arranged on the periphery of the piston, the piston sealing device compresses the cylinder side plate through sealing rubber under the stress of a lever counterweight mechanism, and thin oil with a certain height is filled into a piston oil groove formed by the piston, the piston sealing device and the piston side plate to realize anhydrous sealing.

2. The cylindrical dry hydrogen tank as claimed in claim 1, wherein: the piston comprises a dome-shaped dome and a piston box beam arranged around the dome-shaped dome; the piston seal includes a piston oil gallery floor disposed about the piston box beam, the piston oil gallery floor being flush with the floor of the piston box beam.

3. The cylindrical dry hydrogen tank as claimed in claim 1, wherein: the piston oil drain is provided with a piston oil drain emptying device, the piston oil drain emptying device comprises a lifting device arranged corresponding to an oil discharge port arranged on a piston oil drain bottom plate, the lifting device comprises a valve plate capable of plugging the oil discharge port, the valve plate is connected with a valve rod, the other end of the valve rod is connected with a lever mechanism fixed on the piston, and a guide cylinder used for guiding the valve plate is further arranged on the piston oil drain bottom plate.

4. A cylindrical dry hydrogen cabinet according to claim 3, wherein: the valve plate is a plane valve plate, and the valve plate realizes the sealing of the oil discharge port through an oil-resistant rubber pad arranged below the valve plate.

5. The cylindrical dry hydrogen tank as claimed in claim 1, wherein: and the sealing rubber of the piston sealing device is made of static conductive material.

6. The cylindrical dry hydrogen tank as claimed in claim 1, wherein: the device also comprises a vent pipe horizontally connected from the lower part slightly lower than the falling bottom position of the piston, and a flame arrester and/or a weather-proof cap are arranged at the nozzle of the vent pipe.

7. The cylindrical dry hydrogen tank as claimed in claim 6, wherein: also comprises an industrial television monitor for monitoring the working state of the equipment at the outlet of the emptying pipe.

8. The cylindrical dry hydrogen cabinet according to claim 1, wherein: the device also comprises a replacement diffusion pipe and/or a sampling pipe which are connected out of the side plate of the cylinder body below the piston sealing device at a position slightly lower than the falling bottom position of the piston.

9. The cylindrical dry hydrogen tank as claimed in claim 1, wherein: the piston is provided with a sampling tube.

10. The cylindrical dry hydrogen tank as claimed in claim 1, wherein: and the gas storage pressure of the hydrogen tank is 2-20 kPa.

Technical Field

The invention belongs to the technical field of hydrogen storage, and relates to a cylindrical dry-type hydrogen cabinet.

Background

Under the large background of global reduction of carbon emission, a novel alternative energy is called for. Hydrogen energy is an efficient and clean energy source and a high-quality reducing agent, and with the development of hydrogen and the expansion of the application field, the large-scale application of hydrogen in the traditional industrial field becomes the leading edge of research.

Taking a traditional steel united enterprise as an example: the traditional blast furnace ironmaking adopts coke to provide heat and a reducing agent, the carbon emission is very high, and if part or all of the blast furnace ironmaking process can adopt hydrogen as the reducing agent, the carbon emission is greatly reduced; there are various furnaces and kilns in which hydrogen gas of about 10kpa pressure level is used as fuel. In addition, steelmaking in an integrated iron and steel plant requires a large amount of oxygen. Under the background of large-scale utilization of wind energy and solar energy, if the intermittent and unstable new energy in remote areas is made into hydrogen and oxygen by means of electrolysis of water and the like to be stored respectively, the hydrogen and oxygen are supplied to steel and iron united enterprises which need to use a large amount of hydrogen and oxygen for use, and perhaps the hydrogen and oxygen are effective means for greatly reducing carbon emission in the traditional steel and iron manufacturing process. The hydrogen adopts a low-pressure storage mode, so that the hydrogen requirement of continuous production of each user of iron and steel combination enterprises such as iron making enterprises, various furnaces and kilns can be met nearby. For example, in the application scenarios of using hydrogen with the pressure level of about 10kpa as fuel, using a shaft furnace with about 0.6MPa hydrogen for iron making or using a conventional blast furnace with about 0.3MPa for carbon emission reduction modification, the hydrogen can be used by slightly pressurizing, which saves much electric energy compared with high-pressure storage and transportation of hydrogen.

Cryogenic liquid storage and high pressure storage of hydrogen have been studied, but low pressure storage of hydrogen is currently limited to wet chest storage. However, wet cabinets have the following drawbacks: the gas storage pressure stored in the wet type cabinet is about 3 kpa; because the wet cabinet adopts water seal, the hydrogen can be humidified; the large-scale foundation load of the wet cabinet is very large; in northern cold areas, the energy consumption in the aspect of freezing prevention is prominent.

Disclosure of Invention

In view of the above, the present invention provides a cylindrical dry hydrogen tank to realize low-pressure storage of hydrogen.

In order to achieve the purpose, the invention provides the following technical scheme:

a cylindrical dry-type hydrogen cabinet comprises a cylinder body, wherein a piston is arranged in the cylinder body and moves up and down along a side plate of the cylinder body through a piston guide wheel arranged in the circumferential direction of the piston; the piston realizes movable sealing with the cylinder side plate through a piston sealing device arranged on the periphery of the piston, the piston sealing device compresses the cylinder side plate through sealing rubber under the stress of a lever counterweight mechanism, and thin oil with a certain height is filled into a piston oil groove formed by the piston, the piston sealing device and the piston side plate to realize anhydrous sealing.

Optionally, the piston comprises a dome-shaped dome and a piston box beam arranged around the dome-shaped dome; the piston seal includes a piston oil gallery floor disposed about the piston box beam, the piston oil gallery floor being flush with the floor of the piston box beam.

Optionally, be equipped with piston oil ditch in the piston oil ditch and put clean device, piston oil ditch is put clean device and is included the elevating gear who sets up corresponding to the oil discharge opening of seting up on the piston oil ditch bottom plate, and elevating gear is connected with the valve rod including the valve plate that can block up the oil discharge opening, valve plate, and the other end of valve rod is connected with the lever mechanism who fixes on the piston, still is equipped with the guide cylinder that is used for the valve plate direction on the piston oil ditch bottom plate.

Optionally, the valve plate is a planar valve plate, and the valve plate realizes the sealing of the oil discharge port through an oil-resistant rubber pad arranged below the valve plate.

Optionally, after oil and water in the oil groove at the bottom of the hydrogen tank are separated by an oil-water separator on the ground, the oil and water are pumped to the upper part of the side plate by a circulating oil pump station to realize natural overflow to the piston oil groove along the inner wall of the side plate.

Optionally, the gas storage pressure of the cabinet body is 2-20 kPa.

Optionally, the sealing rubber is made of an electrostatic conductive material.

Optionally, a vent pipe horizontally connected from the lower part of the piston slightly lower than the falling bottom position is further included, and a fire arrester and/or a weather-proof cap are arranged at the nozzle of the vent pipe.

Optionally, an industrial television monitor for monitoring the operational status of the equipment at the outlet of the flare.

Optionally, the device also comprises a replacement diffusion pipe and/or a sampling pipe horizontally connected out of the side plate of the cylinder body below the piston sealing device at a position slightly lower than the falling bottom position of the piston.

Optionally, a sampling tube is provided on the piston.

Optionally, depending on the climatic conditions, heating means are provided in the bottom oil gallery and/or the piston oil gallery of the hydrogen tank.

The invention has the beneficial effects that: the gas storage pressure is automatically generated by the dead weight of the piston and the piston sealing device, the low-pressure storage of the hydrogen is realized, the humidification of the hydrogen is avoided, the gas storage pressure can reach 20kPa, and the gas storage device has the characteristics of high safety and low energy consumption.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic elevational view of a hydrogen cabinet according to the present invention;

FIG. 2 is a schematic elevation view of the piston oil gallery drain cleaning device of the hydrogen tank of the present invention.

Reference numerals: the device comprises a hydrogen cabinet foundation 1, a bottom plate 2, a cylinder side plate 3, a bottom oil groove baffle plate 4, bottom oil groove water 5-1, thin oil 5-2, a bottom oil groove heating device 5-3, a replacement diffusing pipe 6, a piston bracket 7, a piston oil groove bottom plate stiffening 8-1, a piston oil groove bottom plate 8-2, piston sealing device bottom canvas 8-3, a piston oil groove heating device 8-4, piston sealing rubber and a clamping stress mechanism 8-5 thereof, piston oil groove sealing oil 8-6, a piston oil groove purifying device 8-7, a lever mechanism 8-71, a valve rod 8-72, a limiting piece 8-73, a guide cylinder 8-74, a valve plate 8-75, an oil-resistant sealing ring 8-76, a piston box beam and concrete therein 9-1, a piston guide wheel bracket 9-2, a piston guide wheel bracket 9-76, a piston oil groove water-6, a piston oil groove bottom plate 8-2, a piston sealing oil groove heating device 8-4, a piston sealing rubber and a clamping stress mechanism 8-5-3, a piston oil groove heating device 8-6, a piston oil groove heating device, a piston box beam, a piston guide wheel bracket, a piston box beam, a piston guide wheel, a piston box beam, a piston guide wheel, a piston box beam, a piston, the device comprises 9-3 parts of piston counterweights, 9-4 parts of piston guide wheels and anti-rotation devices, 9-5 parts of dome piston plates, 9-6 parts of sampling pipes, 10 parts of cabinet body galleries, 11 parts of side plate T-shaped steel, 12 parts of upright posts, 13 parts of cabinet top roof, 14 parts of cabinet top ventilation dormer, 15 parts of emptying pipes, 15-1 parts of remote control valves, 15-2 parts of vertical pipes, 15-3 parts of emptying port platforms, 15-4 parts of flame arresters, 15-5 parts of windproof and rainproof caps and 15-6 parts of industrial television monitors.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 2, a cylindrical dry type hydrogen tank, in which gas storage pressure is automatically generated by piston mass, includes a cylinder, in which a piston is disposed, the piston moving up and down along a side plate of the cylinder through a piston guide wheel disposed in a circumferential direction thereof; the piston realizes movable sealing with the cylinder side plate through a piston sealing device arranged on the periphery of the piston, the piston sealing device compresses the cylinder side plate through sealing rubber under the stress of a lever counterweight mechanism, and thin oil with a certain height is filled into a piston oil groove formed by the piston, the piston sealing device and the piston side plate so as to realize anhydrous normal-pressure sealing.

The piston adopts the form of a piston box beam and a dome-shaped vault to seal hydrogen, and the piston sealing device applies force to press the sealing rubber to the side plate through the lever counterweight mechanism and fills the thin oil with the height exceeding the pressure of the hydrogen so as to realize anhydrous sealing and ensure the sealing safety. Filling thin oil in the piston oil gallery: oil and water in the oil groove at the bottom of the hydrogen tank enter an oil-water separator on the ground, and after oil-water separation, the thin oil 5-2 is pumped to the upper part of the side plate through a circulating oil pump station and naturally overflows to the piston oil groove from the inner wall of the side plate. A guide wheel and an anti-rotation device are arranged between the piston and the cylinder body so as to realize the automatic hydrogen handling through the vertical up-and-down movement of the piston relative to the cylinder body; the static pressure generated by the oil level above the upper surface of the sealing rubber exceeds the hydrogen pressure below the piston, so that the hydrogen can be reliably sealed, the gas storage pressure is greatly improved by 20kPa compared with a wet cabinet, and a user using the hydrogen as fuel in the range of several kilometers around can obtain continuous and stable hydrogen supply.

The piston oil duct cleaning device 8-7 is arranged in the piston oil duct, the piston oil duct cleaning device 8-7 comprises a lifting device arranged corresponding to an oil discharge port arranged on a bottom plate 8-2 of the piston oil duct, the lifting device comprises a valve plate 8-75 capable of blocking the oil discharge port, the valve plate 8-75 is connected with a valve rod 8-72, the other end of the valve rod 8-72 is connected with a lever mechanism 8-71 fixed on the piston, a guide cylinder 8-74 used for guiding the valve plate 8-75 is further arranged on the bottom plate 2 of the piston oil duct, and a limiting piece 8-73 used for preventing the valve plate 8-75 from being separated from the top of the guide cylinder 8-74.

The invention does not adopt water as a sealing medium, and does not humidify the hydrogen, and compared with a wet cabinet which takes water as a sealing medium, the hydrogen cabinet is a dry cabinet.

In order to prevent static aggregation, the piston sealing rubber belt adopts static conductive oil-resistant rubber.

An emptying pipe 15 is configured for the hydrogen cabinet, and a flame arrester 15-4 is arranged at the pipe orifice of the emptying pipe 15, so that hydrogen in the hydrogen cabinet can be quickly emptied during accidents of the hydrogen cabinet, and the accident expansion is avoided; in order to prevent foreign matters from entering, a wind and rain proof cap 15-5 is arranged; in order to monitor the working state of the equipment at the outlet of the emptying pipe 15, an industrial television monitor with an image recognition function is configured for the equipment, and an alarm is given to a manned place.

In order to realize convenient hydrogen purging and replacement, the piston oil groove bottom plates 8-22 of the piston sealing device are basically flush with the piston box-shaped beam bottom plate 2.

The device also comprises a replacement diffusion pipe 6 and a sampling pipe which are horizontally connected from a side plate of the cylinder body below the piston sealing device which is slightly lower than the bottom falling position of the piston, wherein the replacement diffusion pipe 6 can be replaced by the sampling pipe if a replacement method of diffusing the mixed gas from the vent pipe 15 by repeatedly lifting and lowering the piston is adopted in the replacement of the hydrogen tank.

In order to facilitate water supply or oil discharge of the piston oil gallery and maintain convenient hydrogen replacement, the piston oil gallery drainage device adopts a sealing type of a flat plate and an oil-resistant rubber pad.

The gas holder displacement blow-off pipe 6 and the blow-off pipe 15 are connected out from the height of the piston sealing device which is slightly lower than the piston falling bottom position, so that the displacement blow-off is convenient.

And a sampling pipe is arranged on a piston plate of the dome-shaped vault, and the gas replacement effect of the space below the piston of the gas holder is checked in a sampling manner.

The invention relates to a dry-type hydrogen cabinet for storing hydrogen at low pressure, which can meet the requirement of large-scale industrial application of hydrogen and provide a solution for low-pressure storage of hydrogen for large-scale industrial application of hydrogen.

The sampling tube valve is connected by adopting a tube thread with thread seal, and the opening of the sampling tube adopts a tube thread plug with thread seal.

Examples

A cylindrical dry-type hydrogen tank is shown in figures 1-2, wherein S is the piston stroke, a is the air zone, H is the hydrogen zone, and D is the diameter of the hydrogen tank. The hydrogen gas tank comprises a cylindrical barrel consisting of a barrel side plate 3, a side plate T-shaped steel 11 and a stand column 12, a hydrogen gas tank foundation 1 positioned at the bottom of the barrel, a bottom plate 2 arranged on the hydrogen gas tank foundation 1, a bottom oil groove baffle plate 4 and a piston support 7 which are arranged on the bottom plate 2, a cabinet body gallery 10 arranged on the barrel, a cabinet top roof 13 and a cabinet top ventilation air building 14 positioned at the top of the barrel and a piston moving along the barrel, and a piston sealing device which can realize movable sealing of the piston and the barrel side plate 3 is arranged around the circumferential direction of the piston.

The bottom oil ditch is formed by surrounding a bottom oil ditch baffle 4, a bottom plate 2 and a barrel, wherein the inner lower layer is bottom oil ditch water 5-1, and the upper layer is thin oil 5-2. A bottom oil ditch heating device 5-3 is also arranged in the bottom oil ditch.

The gas storage pressure of the hydrogen is automatically generated by the weight of the piston sealing device and the piston, and when the hydrogen is produced and consumed in an unbalanced manner, the piston of the hydrogen cabinet automatically moves vertically up and down in the cylindrical barrel consisting of the barrel side plate 3, the side plate T-shaped steel 11 and the upright post 12 to deliver and discharge the hydrogen. The cylindrical cylinder with horizontal cross section and the piston plate of the vault are favorable for the hydrogen cabinet to bear higher gas storage pressure and large scale.

The piston mainly comprises a piston box beam, concrete 9-1 in the piston box beam, a piston guide wheel bracket 9-2, a piston counterweight 9-3, a piston guide wheel and anti-rotation device 9-4 and a dome piston plate 9-5.

The piston sealing device mainly comprises 8-1 stiffening of a piston oil groove bottom plate, 8-2 piston oil groove bottom plates, 8-3 piston sealing device bottom canvas, 8-4 piston oil groove heating devices, 8-5 piston sealing rubber and clamping stress applying mechanisms thereof, 8-6 piston oil groove sealing oil and 8-7 piston oil groove emptying devices. The piston oil gallery floor 8-2 is substantially flush with the floor of the piston box beam.

The piston sealing device adopts a sealing structure formed by highly combining a rubber belt pressing side plate and a thin oil liquid column, the sealing is safe and reliable, and the hydrogen pressure under the piston can reach 2-20 kpa; the sealing rubber material for conducting static electricity is adopted, so that the safety of hydrogen storage is improved; the structure that the bottom plate 8-2 of the piston oil duct is basically flush with the bottom plate of the piston box beam is adopted, so that the replacement of the hydrogen tank is convenient. The piston sealing device adopts thin oil sealing, and does not humidify hydrogen.

The hydrogen danger is high, so the hydrogen cabinet is provided with a vent pipe 15, the vent pipe 15 is connected from a cylinder of the hydrogen cabinet which is slightly lower than the sealing device at the bottom of the piston, under the accident condition of the hydrogen cabinet, a remote control valve 15-1 is remotely or manually opened, and the hydrogen is led to the position higher than the top of the cabinet for venting through a vertical pipe 15-2, thereby avoiding the accident expansion. In order to prevent lightning strike from being ignited, a fire damper 15-4 and a windproof and rainproof cap 15-5 are arranged at a pipe opening, and a vent platform 15-3 is correspondingly arranged for overhauling and maintaining; in order to monitor the working state of the equipment at the outlet of the emptying pipe 15, an industrial television monitor 15-6 with an image recognition function is configured for the equipment and an alarm is given to a manned place.

The density of hydrogen is small, in order to facilitate the replacement and sampling, testing and replacing the result, dispose the sampling tube 9-6 on the piston plate with dead zone under the piston plate; a replacement bleed tube 6 is installed at a level below the seal slightly below the piston bottom-down position.

The hydrogen tank bottom oil groove heating device 5-3 and the piston oil groove heating device 8-4 are only used in the northern icing area.

According to the piston oil groove emptying device 8-7, a compaction structure of the valve plate 8-75 and the oil-resistant sealing ring 8-76 is adopted on the piston oil groove bottom plate 8-2, so that a dead angle area at the lower part of the piston oil groove bottom plate 8-2 is reduced as much as possible, and the lower part of the piston can be replaced conveniently.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.