AIR NIPPLE

Abstract

This invention relates to a vent nipple used in gas pressure fire detection systems that allows the removal of air from the pressure lines during initial commissioning and prevents hydraulic fluid from escaping the line once the system reaches operating conditions. The nipple operates in an open position, allowing the passage of gaseous fluid in the discharge direction under low pressure. However, if the system pressure increases and / or hydraulic fluid reaches the nipple, a spring-controlled movable element within the nipple displaces, closing the discharge line and preventing fluid flow. This effectively removes air from the system during initial installation and prevents hydraulic fluid loss once the system reaches operating pressure, thus ensuring pressure stability and system reliability.

Description

1 TARIFF VENTILATION NIPPLE Technical Area This invention is used in fire suppression systems with gas pressure fire detection systems. During the initial commissioning of the sensing pressure line used, the air inside the line is 5 a system that allows the hydraulic fluid to be discharged from the line when the system operating pressure is reached. It involves a spring-loaded vent nipple that prevents leakage. Previous Technique Fire extinguishing systems are not only capable of extinguishing a fire, but also of activating during a fire. It is also important that they are ready to be activated. For this purpose, many systems are in the pre-emptive zone. They are kept ready by pressurization. Fire extinguishers are located in the ceiling inside the building. The spray cans are always ready to spray the fire extinguisher under pressure. In the technical context, the known Chinese patent applications CN218644871 and CN209876050 concern a single aspect. This refers to a check valve that allows flow. Brief Description of the Invention 15 This invention is used for the initial commissioning of pressurized sensing lines in fire extinguishing systems. during the process, it allows the air inside the line to be expelled and the system pressure When the hydraulic fluid rises and reaches the nipple inlet, it automatically closes, preventing fluid leakage. It is related to a ventilation nipple that is obstructing the airflow. The nipple, which is the subject of the invention, is open to allow the discharge of the gas phase under low pressure. It is located in a position where the pressure rises above a certain threshold value and / or hydraulic When the liquid reaches the nipple, the pressure overcomes the spring force within its internal structure. Due to the effect of the stepped shaft (piston) displacement, the discharge line is closed, releasing the liquid. It is preventing passage. This ensures that air is effectively removed from the system during the initial installation, 25 When the system reaches operating conditions, the leakage of hydraulic fluid to the external environment is prevented. System integrity and pressure stability are ensured. 2 Definitions of the Figures Illustrating the Invention The figures used to better illustrate the ventilation nipple developed with this invention are: The relevant explanations are below. Figure 1 shows a perspective view of the piston-operated ventilation nipple according to the invention. Figure 2 shows a cross-section of the outer casing of the ventilation nipple with the gas line open, according to the invention. It is a side view of the situation. Figure 3 shows a cross-section of the outer casing of the ventilation nipple with the gas line closed, according to the invention. It is a side view of the situation. Figure 4 shows a perspective cross-section of only the body of the ventilation nipple according to the invention. It is the appearance. 10 Figure 5 shows a perspective view of the ventilation nipple without the body, according to the invention. Figure 6. According to the invention, only the stepped shaft (piston) of a ventilation nipple. It is a perspective view. The elements shown in the figures are numbered, and their corresponding elements are given below. 1. Ventilation nipple 15 2. Body 3. Evacuation 4. First stage 5. First gasket 6. Second gasket 20 7. Spring 8. First gasket housing 9. Second gasket housing 10. Final stage 3 11. Spring guide 12. Introduction 13-Stage Piston Detailed Description of the Invention 5 The subject of the invention is a ventilation nipple (1), used in gas pressure fire detection systems. During the initial commissioning of pressure lines, the air inside the line must be released. to ensure that the hydraulic fluid is removed from the line when the system operating pressure is reached. It is a flow control element developed to prevent leakage. The subject of the invention is a ventilation nipple (1) with a stepped shaft (piston) (13) in its most basic form 10 A BSP threaded connection to an inlet (12) and a discharge (3) opening for gas discharge. It is a body in the shape of a hexagonal right prism (2). The spring to be selected according to the spring force (7) Gas applied from the inlet (12) while under low pressure such as 1-7 atm / bar in an adjustable manner The pressure reaches directly to the discharge (3). Since the fluid is in the gas phase at this stage, Due to the compressible nature and low viscosity of the fluid, the stepped shaft (piston) (13) 15 The force generated on it is not sufficient to overcome the spring (7) force and the system is open By maintaining its position, the air inside the line is evacuated. If from the inlet (12) The incoming gas pressure can rise to at least 12-20 atm / bar due to the incompressible nature of the fluid. and the effective force acting on the stepped shaft (piston) (13) due to its higher viscosity increasing and this force overcomes the spring (7) force and the discharge (3) of the stepped shaft (piston) (13) 20 This causes it to shift in that direction. As a result of this movement of the stepped shaft (13), the first stage (4) and the last stage (10), the housing (2) By contacting the corresponding surfaces inside, it mechanically closes the discharge (3) line. At the same time, the first gasket (5) and the second gasket (6) are in the first gasket housing (7) and the second gasket Coming out of its housing (8), it is compressed to contact the inner surface of the body (2) and its seal is 25 It increases. 4 In this closed position, the passage of hydraulic fluid to the discharge (3) direction is prevented and the system The internal pressure is maintained. The stepped shaft (13) is in this position due to the effect of system pressure. It is fixed and the discharge line (3) remains closed as long as the pressure continues. The spring (7) characteristic will determine the threshold pressure value that initiates the movement of the stepped shaft (13). This value is selected in this way and can be adjusted depending on the system design. This 5 In this way, the opening and closing behavior of the nipple (1) is optimized according to the desired pressure ranges. It is possible. The invention is a ventilation nipple (1) that allows gas phase flow but hydraulic fluid Thanks to its structure that prevents passage, it is effective during the initial commissioning of pressure lines. It provides air release and automatically switches to 10 when the system reaches operating conditions. It closes to prevent fluid loss. In fire extinguishing systems, the pressurized gas line acts as a sensor. If the pressurized gas... If the pressure on the line drops, this pressure will cause the extinguisher to leak from the tank. The obstructing elements are deactivated, allowing the extinguishing agent to escape from the tank. The line the pressure remaining at the same value and the pressure at 15 for many years until the moment the risk materializes Protection is expected. Air, as a mixed gas, is a problematic gas in the long term. Because Air contains components that undergo different expansion and contraction phases depending on temperature. Furthermore, air... The water vapor it contains can condense in cold temperatures, causing a drop in pressure and leading to corrosion. To minimize the effects, the air inside the line is swept away during the initial installation. It is necessary to discharge it. After terminating the vent nipple (1) line, 20 is supplied to the line. A sweeping gas will fill the line. The sweeping gas will exit the line... By increasing the pressure in the line as it starts to come out, that is, by increasing the scavenging gas pressure The vent nipple (1) is made to close the line to gas escape.

Claims

REQUESTS 1. In fire extinguishing systems equipped with gas pressure fire detection systems during the initial commissioning of the sensing pressure line used, inside the line a hydraulic system that allows air to be released and when the system reaches its operating pressure To prevent the liquid from leaking out of the line; 5 - A gas discharge (3) connection to an inlet (12) with a BSP thread connection. stepped shaft inside the body (2) which is in the shape of a hexagonal right prism with an opening (piston) (13) containing, - Gas pressure applied from the inlet (12) when under low pressure such as 1-7 atm / bar spring (7) which allows direct access to the discharge (3), 10 - by increasing the gas pressure from the inlet (12) to at least 12-20 atm / bar effective on the stepped shaft (piston) (13) due to its high viscosity increasing force overcoming spring (7) force and displacing in the discharge (3) direction first stage (4) and the final stage (10), contact the corresponding surfaces inside the body (2) 15 with a stepped shaft (piston) (13) that mechanically closes the discharge (3) line. a ventilation nipple characterized by (1).

2. During the mechanical closure of the discharge (3) line, the first seal (5) and the second seal (6) exiting from the first gasket housing (7) and the second gasket housing (8) inside the body (2) By compressing in such a way as to contact the surface, it increases the seal, as in the first claim. A ventilation nipple (1) characterized by a stepped shaft (piston) (13). 20

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