SU752093A1 - Safety arrangement for cryogenic reservoirs - Google Patents

Description

5, connected through a rod 6 with. Membrane 7, p, the output section 8 and controlling the 9th cavity. Channel 10 connects the control cavity 9 with the cavity // pulse polar Klanana 3, channel J2 - the feed bore J3 from the gas cushion M of the tank /.

In this case, the valve 3 is located behind:, Lory1Y - .. 0 gan 1-5, associated with the core in the form of an oplfop 16 and additional sensory elements in the form of a membrane 77, loaded with a spring 18, the gain of which is adjusted by a screw 19. The cavity 20 of the main sensing element is connected by channel 21 to the input cavity 13 and through the saddle 22, while the locking member 15 is in the lower position, with the cavity 11. When the locking organ / 5 is in the upper l-position, t. that is, with the left-wing seat 22, the cavity 11 is connected by a channel 23 to the drain pipe 24 a a 2. The cavity 25 of the additional sensing element is connected by channel 26 to the lower part of the reservoir 1.

Madhdwa Kaial tank (not shown) is located in its upper part, and the channel 27 of the issuance of the product - at the bottom.

The safety device works in the following way.

The working medium from the gas cushion 14 lok.nalu 12 enters the input strip 13 of the safety clutch 2 and through the channel 21, the saddle 22 of the valve 3 and the channel 10 into the control: th cavity 9.

,, Thus, the force from the pressure on the locking element b is compensated by the pressure of the same rent on the membrane 7 of the safety valve 2, which ensures the sealing of the saddle 4. Springs-a / 6. With the POMON1P adjustment. viita 19 on: the force is generated from the pressure of the medium in a cavity of 25 and, consequently, in the lower part of the reservoir 1, corresponding to its minimum.: the value of the boost pressure and the max. The pressure from the liquid column, which, through channel 26, entering the lolost .25, acts on the membrane 17 and, when supporting the joint / 5, separates the cavity L from 1ka, nala 23. Since w.v-more , the pressure is not proportional to the reduction of the liquid column, the triggering of the safety class does not occur, because in the input cavity 13 and upwardly, -avl-yonl odi.na-ko.vo, a.davlen.ie. at the bottom of the tank and, sootveit.vekto but; in-cavity 25 remains unchanged. .

In the event of an unforeseen increase in pressure in the reservoir, its greatest value will be in the lower part of the reservoir and, accordingly, in the hollow 25 of the impulse valve 3. The membrane 17 under the action of this pressure overcomes the force of the spring 18, the stop valve 15 opens the passage to the cavity // into the channel 23 and overlaps the saddle 22, separating the cavities 20 and 11 of the pulse valve. The working medium from the control cavity 9 through the channel 10, the cavity 11 exits through the channel 23 into the drainage pipe 24. Pa: the force in the safety valve is disturbed and the volley element 5 opens the saddle 4, the working medium on the gas cushion 14 through The channel 12, the inlet 13 and the outlet cavity 8 enters the drainage pipe 24. The balance of forces in the safety valve is broken, and the locking element 5 unscrews the saddle 4, the working medium on the gas cushion 14 through channel 12 , input 13 and output 8 of the cavity goes into the drainage pipeline 24.

By reducing daE1 and up to a predetermined level, the locking member 15 from the action of section 18 will close the channel 23, the working medium will fill the control cavity 9 and the safety valve 2 will close.

The safety device allows to increase the pressure of the product delivered to the consumer or to reduce the wall thickness of the cryogenic tank, without violating its performance characteristics.

FORUMA AND 3 ABOUT IH AND

A safety valve for cryogenic tanks, containing a safety valve, the inlet cavity of which is connected to the gas cushion of the tank, and a pulse valve, are half a dozen. sensuous element -which,. connected to

input and through the valve body

}-Etc

It is located in the upper part of the reservoir, and the channel for the release of the product is in the lower part of the reservoir, so that a decrease in the metal intensity of cryogenic rezi1p, voivars, a pulse valve is supplied with additional components, an integral-1 element, the cavity of which is connected to the lower part of the aeroform.

Source Information, take into account the expertise:

1. The second certificate is QCCP 558124, cl. F 1b K 17 / GO, 1975.

2. Romalenko, N. T., Kuliko, Yu. F. Cryogenic Armature. M., ..a.sch} schost.roenie, 1978, p. S7 .. ,,

-21

Claims (1)

A safety device for cryogenic reservoirs containing a safety valve, the inlet cavity of which is connected to a gas cushion of a rezervua40 ra, and an impulse valve, polting. whose sensitive element. .. is connected to the inlet and through the shut-off element with the control cavities of the safety valve, the channel of the pressurization of the tank 45 is located in its upper part, and the product delivery channel is in the lower part, which is inconsequential · Reducing the metal consumption of cryogenic tanks, the pulse valve is equipped with an additional 50 sensing element, the cavity of which is connected to the lower part of the tank.