RU1791670C - Device for fastening safety cap on pressure vessel throat - Google Patents

Abstract

Scope: in devices for fastening the pressure cap of the pressure vessel, used as containers for storing and transporting liquid and gaseous products to increase the reliability of fastening the pressure cap on the neck of the pressure vessel during transportation. SUMMARY OF THE INVENTION: A device for fastening a pressure cap of a pressure vessel is a double-arm plug. There is a protrusion on one horn of the plug, and in one of the holes of the cap there is a groove corresponding to it, offset by a certain angle (for example, 90 °) relative to the protrusion, and the other horn of the plug is inclined at an angle to the feather, and the relation hi, 1h2 where hi is the minimum distance between the rollers; d is the diameter of the annular groove in the neck of the pressure vessel; ha is the distance from the end of one horn to the other. The coefficient 1.1 takes into account the friction force of the end of the fork along the groove of the neck. Experienced. 3 ill. Yo

Description

The invention relates to devices for securing a pressure cap of a pressure vessel, used as containers for storing and transporting liquid and gaseous products,

A device is known for fastening the safety cap of a pressure vessel using a two-arm fork secured against falling out by a chain on a handle welded to the cap adopted for the prototype. The plug horns pass through 2 pairs of through holes in the cap and an annular groove in the neck of the pressure vessel. The ends of the fork horns are pointed on the cone. Making a chain and attaching it to the cap and plug is technologically difficult. Fastening with a straight fork is not reliable during transportation due to its falling out of the holes.

The disadvantage of these designs is the unreliability of fastening the safety cap on the neck of the pressure vessel from the fork falling out during transportation.

The purpose of the invention is to increase the reliability of fastening the safety cap on the neck of a pressure vessel during transportation.

To do this, there is a protrusion on one horn of the plug, and in one of the holes of the cap there is a groove corresponding to it, offset by a certain angle (for example, 90 ° upward) from the protrusion, and the other horn of the plug is inclined at an angle to the first, and the relation hi d 1,1h2, where hi is the minimum distance between the horns;

ABOUT

I

about

d is the diameter of the annular groove in the neck of the pressure vessel;

h2 is the distance from the axis of the conical end of one horn to another.

If hi is equal to or greater than d, the reliability of the attachment decreases.

If d is equal to or greater than 1.1 h2, it is difficult to install the plug on the neck of the vessel .-

The coefficient 1.1 takes into account the friction force of the end of the fork along the groove of the neck and is selected by the optimal experimental work.

The inclination of the horn of the fork at an angle to the other horn a depends on the length of the horns b3 and the distance between the horns at the base h and is determined by the formula

c-jrctah hl "- arcig h3

while di h d,

where di is the diameter of the neck of the pressure vessel.

In the case of h di, there will be no engagement of the horns on the neck of the cylinder.

In the case of h d, the fastening is not ensured (the fork will jump off during transportation from the neck).

The angle between the horns will vary depending on the structural dimensions, but the presence of an angle ensures reliable fastening of the cap.

In FIG. 1 shows a device, a longitudinal section; figure 2 is a view along arrow a in figure 1; in Fig.3 - section bB in Fig.1.

The device consists of a cap 1, worn on the neck 2 of the vessel. A plug 3 with horns a and e, which pass through the annular

5

0

5

0

0

5

groove d neck. In one of the holes in the cap 1, a groove c is made, offset from the protrusion f of the plug 3 by 90 ° (up or down).

When assembling the cap 1 on the neck 2 of the pressure vessel, the plug 3 is inserted with a horn and into the hole in with the groove with the protrusion f in the groove, and then twisting the fork due to the gaps in the hole, it is turned through a certain angle (for example 90 °) and inserted with the horn e into another hole. The arms of the plug 3, sliding along the groove d on the neck 2 of the pressure vessel, expand, tightly gripping the neck and exit through the second pair of holes in the cap. The protrusion на on the horn and the plug protects the plug from falling out of the holes in the cap (when the plug is pulled out to remove the cap).

Form l a isobret and

A device for fastening a safety cap on the neck of a pressure vessel, consisting of a cap with two pairs of holes, a two-arm plug and an annular groove on the neck of the pressure vessel, characterized in that a protrusion is made on one plug of the plug and in one of the cap openings - the corresponding groove displaced relative to the protrusion, the other horn of the plug is inclined at an angle to the first, and the ratio

hi d 1,1h2,

where hi is the minimum distance between the fork horns;

d is the diameter of the annular groove in the neck of the pressure vessel;

h2 is the distance between the ends of the horns.

Fs / e. /

Fie.-W

Type A

fig 2