A locking device primarily for high-pressure cylinders

 

The locking device comprises a chamber located therein a sealing element and a gate, and a channel connecting the cavity of the chamber with the cylinder, and valves. The shutter is mounted for movement in the axial direction. The sealing element is made of a chemically neutral towards sealing the substance of the material. The melting temperature of the material below the melting temperature applied on the inner surface of the walls of the chamber cover, wetted sealing element. The shutter is made in the form n pins, where n=1, 2, and so on, the Unit is equipped with heater sealing element and filter out non-wetted sealing element is installed in the channel. The use of the invention will improve the integrity, thermal stability and reliability of a design and to ensure its reusable. 4 Il.

The invention relates to a valve, particularly to locking devices for sealing high-pressure cylinders.

Known technical solution that implements the method of sealing the tank with the liquid [1] , the walls of which form a recess with hole through overstretches deformation, and the recess is filled with a thermoplastic resin.

The disadvantage of this technical solution is the impossibility of multiple use and its low tightness when used in pressure vessels.

The closest to the technical nature of the claimed technical solution is a locking device [2], containing the camera with raspolozhennymi therein a sealing gasket and a movable shutter, the walls of which is a hole connecting the cavity of the chamber with the cylinder, and provided with a fitting.

A disadvantage of the known method and device is low cold and low integrity, as when filling high-pressure cylinders to prevent their overheating is used, the working environment with low temperature and materials that are used for sealing the closure device, can not withstand low temperatures; and more cold-resistant materials less plastic and does not have a high sealing properties.

The objective of the invention is to improve the airtightness, thermal stability and reliability, and also multiple-use, including weightlessness.

This object is achieved in that the second sealing element and the shutter, mounted for movement in the axial direction, and a channel connecting the cavity of the chamber with the container, and a filling valve according to the invention the sealing element is made of a chemically neutral with respect to the sealing substance, material, melting point which is below the melting temperature applied on the inner surface of the walls of the chamber cover, wetted sealing element, the valve is made in the form of n pins, which interacts with a sealing element, where n=1, 2, etc, and put the heater sealing element and filter out non-wetted sealing element is installed in the channel.

Coating, wetted sealing element on the inner surface of the chamber walls eliminates gaps and eliminate leakage of pressurized substance.

In Fig. 1 shows a General view of the locking device; Fig.2, 3, and 4 versions of the shutter.

The closure device of the container 1 contains the channel 2 in the form of a pipeline installed in channel 2 filter 3 and the camera 4, which is provided with a heater 5. Channel 2 connects the chamber 4 of the cylinder 1. The inner surface of the chamber walls is what trojstva 9, which has a drive 10. The camera 4 is connected with the outlet line 11. The filter 3 and the pins 8 are preferably of the non-wetted sealing element 7 of the material.

The locking device operates as follows.

In the initial state, when the container 1 has a resealable substance under pressure, the pins 8 are in the position shown in Fig.1, the sealing element 7 is in solid condition and closes the ends of the pins 8, sealing, thereby, the container 1. The material used as the sealing element 7 for storing, for example, hydrogen may be the alloy will Posso-61. For the opening of the cylinder 1 pin 8 using, for example, the electric actuator 10 is moved to its extreme upper position and pierce holes in the sealing element 7, after which they are moved by the actuator in the extreme lower position, releasing holes and providing pressurized substance out through an outlet pipe 11 to the consumer. The actuator, for example, can be made in the form of three-position electric actuator type F. A-0. If necessary, seal remaining in the tank pressurized substance or after filling of the container 1 pins 8 drive 10 is Fig.1 shows a heater), spreading out on the floor 6 and wetting it, and fills the holes pierced by the pins 8 at the opening of the container 1. After that, the heater 5 is turned off and the sealing element 7, cooling down, passes into the solid state, sealing the container 1. The filter 3 is designed for protection of the pipe 2 from being hit by drops of sealing element 7. Pins 8 with a diameter of 1-2 mm and a filter 3 for hydrogen storage can be performed, for example, of steel HTS. Wettable coating 6 is hermetically housed in the camera body 4, for example, using "cold" welding. For hydrogen storage, it can be done, for example, of copper mark M1. The sealing element 7 in the molten state is located on the wetted surface 6 even in a state of weightlessness. This helps to seal the cylinders in space.

Possible variant of the shutter (see Fig.2) when the initial position of the pin 8 is at the bottom. In this embodiment, the pins are only available in two extreme positions instead of three, as in the variant of Fig. 1. The drive for this device can be performed, for example, in the form of two-position electric actuator type GC.3201-0. When moving the upper Phnom position. The melting of the sealing element 7 it does not leak into the holes for the pins due to the fact that the material in which there are holes, not wetted sealing element 7, and the sealing element has a surface tension not allowing them to penetrate into them because of their small size. Therefore, the diameter of the pins should not exceed 1 mm

In Fig.3 shows a variant of the shutter with the two extreme positions of the pins. In modes sealing and retention of the pins 8 are in the highest position, in the mode of flow of the working fluid from the cylinder 1 or in the filling mode it is in the lowest position. The diameter of the pins 8 is significantly greater than the diameters of the pins in previous versions (up to 6 mm and more), and at least the upper part of the pins protrude above the sealing element 7 for one motion to provide the opening holes. The upper part of the pin has wetted sealing element 7 floor and may have grooves.

In Fig.4 shows a variant of the shutter when the perforation pins 8 sealing element 7 is the combination of the through-hole 12 in the pin and the cavity of the chamber 4 and the flow of pressurized substance from the score of the LTL sealing substance, in the mode of flow of pressurized substance from the container 1 or in mode of filling - in the extreme upper position. The sizes of the through holes 12 are selected based on requirements of flow of pressurized substances. A through hole may be made in the form of a groove.

When creating a locking device it is necessary to consider the compatibility of materials with each other and work the body. For example, when storing hydrogen under high pressure it is necessary to take into account the sticking coefficient of hydrogen to the metal [3], to take into account hydrogen corrosion of metals [4], etc., does Not absorb hydrogen materials such as copper, tungsten. High resistance to hydrogen has aluminum.

To reduce the effort of breaking the sealing element 7 pin 8 possible small heat sealing element 7 for its softening.

Thus, the proposed device allows you to reliably and for a long time with a high degree of impermeability to store pressurized substance, including weightlessness. It can also be used for sealing bottles with aggressive media, etc.,

Literature: 1. Japan's bid 55-17866, publ. 1980 , 14.05; 5-447 declared 18.10.73, 48-117074.

2. RF patent 2164320, F 17 5/00.

3. and other Receiving liquid hydrogen. - M.: Chemistry, 1967.

5. Hydrogen in metals./ Ed., the Alfeld and I. Fella, in 2 volumes. - M.: Mir, 1987.

Claims

A locking device primarily for high-pressure cylinders containing chamber located therein a sealing element and a shutter mounted for movement in the axial direction, and a channel connecting the cavity of the chamber with the container, and a filling valve, characterized in that the sealing element is made of a chemically neutral with respect to the sealing substance, material, melting point which is below the melting temperature applied on the inner surface of the walls of the chamber cover, wetted sealing element, the valve is made in the form of n pins, which interacts with a sealing element, where n=1, 2, etc, and put the heater sealing element and filter out non-wetted sealing element is installed in the channel.

 

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