RU2215235C1 - Compressed gas delivery unit - Google Patents

Abstract

FIELD: storage and delivery of gas. SUBSTANCE: proposed unit has main delivery line with electropneumatic valve, pressure reducer, safety valve and pressure relay mounted in succession and additional line with electropneumatic valve, pressure reducer, safety valve, pressure relay and drainage pipe lines mounted in succession; they are electrically connected with electropneumatic valves and interconnected by means of check valves. Proposed unit ensures continuous and automatic unattended maintenance of required parameters of compressed gas in preparing and launching launch vehicles and spacecraft. EFFECT: enhanced efficiency; avoidance of discharge of compressed gases into atmosphere. 1 dwg

Description

 The invention relates to the field of storage and delivery of compressed gases to the consumer. The primary area of application is the provision of launch vehicles, booster blocks and spacecraft, as well as systems and assemblies of launch and technical complexes.

 A device is known (see the book of authors M. M. Agranovsky, M. E. Vyludny and others. Power pneumatic systems, Moscow, 1965, p. 7, Fig. 2) for issuing compressed gas containing compressed gas cylinders, shut-off element, gearbox, safety valve, pressure switch.

 The disadvantage of this device is its lack of reliability, since the protection of the gas consumer from overpressure by means of a safety valve leads to the discharge of gas from the cylinders to a pressure corresponding to the closing pressure of the safety valve, which may ultimately deprive the consumer of the necessary pressure and supply of compressed gas and lead to emergency during launching of launch vehicles and spacecraft. These disadvantages reduce the reliability of the device for issuing compressed gases.

 The closest in technical essence to the claimed object is a device for the delivery of compressed gases (see Fig. 1 on page 6 of the book of the authors M. M. Agranovsky, M. E. Vylyudnov and others. Power pneumatic systems, Moscow, 1965), containing compressed gas cylinders, shut-off element, gearbox, safety valve, pressure switch.

 In the known device adopted for the prototype, when the gearbox is leaking and the pressure rises after it, the safety valve is triggered and, to prevent gas from being discharged from the cylinders, maintenance personnel close the gas supply valve to the gearbox. This stops the flow of gas to the consumer, which can lead to an emergency.

 The objective of the proposed device is to increase reliability in terms of automatic and uninterrupted supply of the necessary parameters to consumers with compressed gases in preparation for the launch and launch of launch vehicles and spacecraft without the intervention and presence of maintenance personnel.

 The required technical result is achieved in that the compressed gas delivery device comprising a main delivery line with a shut-off element, a pressure reducer installed on it, a safety valve and a pressure switch, an outlet and drain pipe, is equipped with an additional delivery line with a shut-off element, a pressure reducer installed on it , a safety valve, a pressure switch and a drainage pipe connected to the drainage pipe of the main line, while the locking elements of the main and additional The delivery lines are made in the form of electro-pneumatic valves and both delivery lines are interconnected by means of check valves installed between the pressure switches and the outlet pipe, and pressure switches electrically connected to the electro-pneumatic valves and check valves are installed in series on drainage pipelines.

 Distinctive features from the prototype are that the device is equipped with an additional delivery line with a shut-off element, a pressure reducer, a safety valve, a pressure switch and a drain pipe connected to the main line drain pipe installed on it, and the shut-off elements of the main and additional delivery lines are made in the form of electro-pneumatic valves, and both delivery lines are interconnected by means of check valves installed between the pressure switch and the outlet pipe, and on sequentially changes require piping installed a pressure switch, is electrically connected with the solenoid-and-return valves.

 The authors are not aware of technical solutions with the essential features given in the distinctive part of the formula.

 The device for issuing compressed gas, the issuance of compressed gas is illustrated in the drawing.

 The compressed gas delivery device consists of a main gas delivery line 1 with an electro-pneumatic valve 2 sequentially installed on it, a pressure reducer 3, a safety valve 4, a pressure switch 5, an output pipe 6, a drain pipe 7, an additional delivery line 8 with an electro-pneumatic valve 9 installed in series on it , pressure reducer 10, safety valve 11, pressure switch 12, indicating the presence of the necessary gas pressure in the additional line 8, drain pipe 13, check valves s 14 and 15, uncoupling the primary and secondary gas dispensing line, the pressure switch 16 and 17, check valves 18 and 19 installed at the drainage pipes 7 and 13.

 The operation of the device is as follows.

 Gas is supplied from the compressed gas cylinder to the electro-pneumatic valve 2 of the main delivery line 1. When the electro-pneumatic valve 2 is turned on from the control system, the gas flows to the pressure reducer 3, where the gas pressure drops to the working pressure and then, passing through the check valve 14, the gas enters the common outlet pipeline 6. The pressure switch 5 installed on this output line gives a signal to the control system about the opening of the electro-pneumatic valve 2, pressure reducer 3 and the supply of working pressure gas to the outlet pipe 6.

 When the working pressure behind the gearbox 3 rises above the norm, the safety valve 4 is activated and the gas supplied to the drainage pipe 7 acts on the pressure switch 16, the signal from which is sensed by the control system and, according to the algorithm of operation, closes the electro-pneumatic valve 2 of the main discharge line 1, preventing unauthorized discharge compressed gas from the cylinder, and at the same time, the electro-pneumatic valve 9 of the additional delivery line 8 opens. The check valve 18, installed on the drain pipe 7, protects le pressure 16 from unauthorized exposure to gas pressure through the drainage.

 When closing the electropneumatic valve 2, gas through its drainage fitting is drained in the area from the outlet of the electropneumatic valve 2 to the check valve 14 into the atmosphere. A pressure switch 5, installed in this section, gives a signal to the control system to close the main delivery line 1. The check valve 14 disconnects the main 1 and additional 8 gas supply lines. In the absence of this non-return valve, the gas with the additional output line 8 from the outlet pipe 6 turned on would be drained through the drain fitting of the electro-pneumatic valve 2 into the atmosphere.

 After closing the electro-pneumatic valve 2 of the main discharge line 1 and opening the electro-pneumatic valve 9 of the additional supply line 8, gas from the cylinder, passing the electro-pneumatic valve 9, pressure reducer 10, where the gas pressure drops to the working pressure, check valve 15 enters the common outlet pipe 6. Pressure relay 12 upon receipt working pressure gas gives the control system a signal about the opening of the electro-pneumatic valve 9, pressure reducer 10 and the flow of working gas pressure into the common outlet pipe 6. The pressure switch 17 is electrically connected It is connected with electro-pneumatic valves 2 and 9 and gives a signal to the control system to close one electro-pneumatic valve and open another electro-pneumatic valve in case of emergency. The non-return valve 15 divides the secondary and main gas lines. The non-return valve 19 protects the pressure switch 17 from unauthorized drainage pressure.

 Thus, the proposed compressed gas delivery device provides continuous and automatic maintenance of the required parameters for the compressed gas consumer without the presence and intervention of personnel serving this device when preparing for the launch and launch of launch vehicles and spacecraft at launch complexes, and therefore, saving expensive compressed gases, preventing their discharge into the atmosphere.

 At present, the compressed gas delivery device has undergone factory tests and it is planned to use it later on at the launch complexes of the Baikonur cosmodrome and other Russian cosmodromes.

Claims (1)

 A compressed gas delivery device comprising a main discharge line with a locking member sequentially mounted on it, a pressure reducer, a safety valve and a pressure switch, an outlet and drain pipe, characterized in that it is provided with an additional delivery line with a locking member, a pressure reducer sequentially installed on it , a safety valve, a pressure switch and a drainage pipe connected to the drainage pipe of the main line, while the locking elements of the main and additional oh dispensing lines are in the form of solenoid, and the two dispensing line are interconnected by means of check valves established between the pressure switch and the output conduit, and drainage pipes are installed in series a pressure switch electrically connected with the solenoid-and-return valves.