Quick discharge valve

Abstract

The invention relates to a quick discharge valve developed for use in high pressure pneumatic systems.

Description

[0001] QUICK DISCHARGE VALVE

[0002] Technical Field

[0003] The invention relates to a quick discharge valve developed for use in high pressure pneumatic systems.

[0004] State of the Art

[0005] The quick discharge valves used in high pressure pneumatic systems are designed to quickly release the pressure accumulated in the system. These valves are activated when a certain pressure level is reached or a certain situation occurs in the pneumatic circuits, allowing the pressure to be immediately reduced and the energy in the circuit to be discharged quickly. Generally, it is aimed to move the cylinders quickly, prevent overpressure and increase system efficiency. With quick discharge valves, it is aimed to shorten production cycles and increase efficiency by accelerating the retraction or pushing of the cylinders. In addition, it is ensured that the pressure is discharged quickly when overpressure occurs by playing an important role in terms of safety.

[0006] These valves are offered in different types. Quick exhaust valves allow the cylinders to be moved quickly by discharging the air in the cylinders directly into the atmosphere. Emergency discharge valves, on the other hand, are designed for safety purposes and are used to quickly discharge the pressure in the system when a danger is detected. Low pressure discharge valves, on the other hand, are activated automatically when a certain pressure level is reached in high pressure systems and the overpressure is released. These valves are commonly used in many fields such as industrial automation, energy sector, automotive and hydraulic systems. With quick discharge valves, it is aimed to operate the pneumatic systems safely, efficiently, and quickly.

[0007] In the current system, there are patent / utility model applications and articles related to the subject. Patent application "GB2298026A" in the state of the art relates to fluid control valves such as valves controlling the flow of air or other gasses in pressure regulating and pressure reducing valves. The invention works by balancing the pressure differences on the two sides of the inlet valve. Thus, the changes in the inlet pressure are affected at the minimum level of the set outlet pressure. In this valve system, a hollow valve element is designed to cooperate with a valve seat. There is a gasket and piston structure on the poppet. By allowing the piston to close the valve and to balance the pressure differences, a net force on the poppet is prevented. The system is also supported by a spring mechanism, which allows the opening and closing of the spring valve to be controlled.

[0008] Patent application "EP2675673B1" in the state of the art relates to compressed air supply assembly for commercial vehicles. The compressed air supply assembly comprises at least one control valve that can be controlled by the electronic control assembly. The control valve comprises at least one inlet connection, an air discharge connection, and an outlet connection. The control pipe is connected or can be connected to the control inlet of a compressor and / or the inlet of a regeneration valve. The assembly may further comprise a supply pipe for delivering or being able to deliver the compressed air to the inlet connection of the control valve and an air discharge pipe connected to the air discharge connection of the control valve.

[0009] Patent application "EP3236086B1" in the state of the art relates to the proportional pressure controller with isolation valve assembly. A proportional pressure control device comprises a body comprising inlet, outlet, and exhaust ports. The filling valve is in communication with the pressurized liquid at the inlet port. The exhaust valve is associated with the pressurized fluid from the fill valve. The inlet poppet valve is opened by the pressurized liquid through the filling valve. When the exhaust poppet valve is closed, the pressurized liquid is isolated from the exhaust port.

[0010] As can be seen from existing systems and pressure regulation technologies, pressure control and air flow management systems generally try to provide a stable performance by balancing the inlet and outlet pressures. These systems aim to direct the fluid quickly and efficiently while controlling the pressure differences by using components such as mechanical valves, pistons, and springs. However, such systems have some disadvantages. Mechanical components can wear over time and lead to leaks in the system. In addition, the use of complex structures can make the maintenance of the system difficult and increase costs.

[0011] In addition, existing systems have been developed to discharge the pressure up to a maximum of 20 bar. In some applications, the air in the pressure vessels in the vicinity of 80-100 bar must be quickly discharged. With the products in the current system, this process takes 30-40 seconds, and the products work with electricity. In these assemblies with electronic control systems, the failure of electronic components can lead to environmental resistance problems and interruptions in the operation of the system. Therefore, although these technologies offer solutions in fluid control, some difficulties may arise in terms of reliability and cost in the long term.

[0012] Only oily and dry air is used in the current products. The systems are only suitable for the use of oily and dry air. However, in addition to these, there is a need for systems in which nitrogen can be used. In other words, another deficiency is a system in which dry air, oily air or nitrogen can be used.

[0013] As a result, there is a need for technologies that provide quick evacuation due to the negativities described above and the inadequacy of the current solutions on the subject.

[0014] Brief Description of the Invention and Objects

[0015] The invention relates to a quick discharge valve developed for use in high pressure pneumatic systems that meet all the above-mentioned requirements and eliminate the disadvantages and disadvantages of the existing system.

[0016] Thanks to the quick discharge valve developed with the invention, the quick air in the pressure vessels is discharged for 5 seconds or less. Thanks to the quick discharge time, the cycle times of the system are significantly shortened, which increases the efficiency in the production lines. At the same time, it allows quick intervention in emergency situations in compressed air systems and makes an important contribution in terms of safety.

[0017] In addition to the above-mentioned advantages, the quick discharge valve developed by the invention has many other benefits. Since it is mechanically operated with air pressure, there is no need for any additional electric drive. The fact that the system does not need an electric drive system reduces energy consumption and reduces costs. Meanwhile, this system, which does not have electrical parts, is more resistant to electrical failures and requires less maintenance. This increases its reliability and offers a longer service life, especially in harsh industrial environments.

[0018] Since the quick discharge valve operates mechanically, it performs reliably in various environmental conditions (such as high temperature, humidity, dusty environments). This expands the areas of use of the system and makes it applicable in more sectors. Since the air in the system is discharged quickly with the help of a valve, filling and discharging operations are completed in a much shorter time in repetitive tasks. In this way, successful results are obtained even in cases where pneumatic systems work hard and operational efficiency increases. With the acceleration of the processes, the costs are reduced, thus this valve becomes an indispensable product for the systems needed.

[0019] Figures

[0020] Figure 1 : A view of the quick discharge valve.

[0021] References

[0022] In order to better explain the quick discharge valve developed by this invention, the parts and elements in the figures are numbered and the corresponding numbers are given below:

[0023] 1. Interface

[0024] 2. Body

[0025] 3. Spring

[0026] 4. Poppet

[0027] 5. First sealing element

[0028] 6. Second sealing element

[0029] 7. Gasket

[0030] 8. Bolt

[0031] A. Quick discharge outlet

[0032] B. Air outlet

[0033] C. Air inlet

[0034] X. Upwards

[0035] Y. Downwards

[0036] Detailed Description of the Invention

[0037] The invention relates to a quick discharge valve developed for use in high pressure pneumatic systems. Dry air, oily air or nitrogen can be used as a fluid.

[0038] The quick discharge valve comprises an interface (1) that allows the valve to be connected to the relevant place and where the compressed air inlet (C) is positioned. The compressed air enters the quick discharge valve from the air inlet (C) at said interface (1). The quick discharge valve is placed in a body (2), the body (2) forming the main structure of the whole valve. The body (2) is the outer shell of the system and protects the quick discharge valve, it is made of stainless steel. There is an air outlet (B) leading to the storage tanks and a quick discharge outlet (A) in this body (2).

[0039] There is also a spring (3) that pushes the poppet (4) to instantly discharge all the air in the system from the air outlet (B) when it reaches a certain air pressure and a poppet (4) that controls the air flow. The poppet (4) is the main part controlling the air flow. The compressed air from the air inlet (C) pushes the poppet (4) upwards (X) and provides the air outlet, and when the pressure decreases, the poppet (4) moves downwards (Y) with the help of a spring (3) and opens the quick discharge outlet (A).

[0040] In addition, the first sealing element (5) and the second sealing element (6) are used to prevent air leaks during the movement of the poppet (4). The first sealing element (5) is made of carbon teflon. The second sealing element (6) is made of a piston seal containing bronzed teflon and nitrile butadiene rubber (NBR).

[0041] The first sealing element (5) and the second sealing element (6) maintain the internal pressure by closing the ducts. The sealing test also confirms that the system is sealed. In the leakage test, 1 / 2 pneumatic quick exhaust was first installed, its measurements were checked, and no problems were encountered. The unit was installed in the test log and a pressure of 100±5 bar was loaded, and it was determined that there was no leakage. Then, the unit was taken to the waiting area for a sealing test. In the controls performed after the 48-hour standby test, no pressure decrease was observed in the unit. During the discharge, when the unit pressure decreased to 30±5 bar, the pressure in the 1 -liter high pressure tube was completely relieved instantly. This process was repeated 100 times and 100±5 bar pressure was loaded to the unit and taken to the waiting area for sealing test. In the controls performed at the end of the 48-hour sealing test, it was determined that there was no leakage in the unit.

[0042] There is also a static gasket (7) that prevents the air pressure in the body (2) from leaking out, a first sealing element (5) and a bolt (8) for the installation of the second sealing element (6). The gasket (7) maintains the pressure and ensures the efficient operation of the system. The bolt (8) provides the mechanical integrity of the system.

[0043] The working principle of the system is based on the movement of the poppet (4) with compressed air. Thanks to the compressed air entering from the air inlet (C) in the interface (1), the poppet (4) is pushed upwards (X) and closes the quick discharge outlet (A). Air is directed to the desired area through the air outlet (B). At this stage, the system performs air filling.

[0044] After the filling process is completed, the pressure at the air inlet begins to decrease when the air in the system needs to be discharged. When the air pressure is reduced, the coil spring (3) is activated and moves the poppet (4) downwards (Y) in the direction. As a result of this movement, the quick discharge outlet (A) is opened, and all the compressed air accumulated in the system is discharged in a short time. This process ensures that repeated filling and discharge operations take place quickly and efficiently.

[0045] The upward (X) direction and the downward (Y) direction, the air outlet (B) are defined as reference. Upward (X) refers to the movement of the poppet (4) away from the air outlet (B) and towards the upper part of the system, that is, the quick discharge outlet (A), with reference to the air outlet (B). Downward (Y) refers to the movement of the poppet (4) towards the air outlet (B) and the lower part of the system (in the direction of the air inlet (C)) with reference to the air outlet (B).

[0046] The valve operates only with compressed air without the need for an electric drive system. This situation increases the energy efficiency of the system and reduces maintenance costs. Meanwhile, it provides high performance thanks to its quick response times.

[0047] The valve developed with said invention can quickly discharge the pressure up to 100 bar. The developed quick discharge valve can be used in many fields such as industrial automation, aviation, and space, automotive, power plants, medical devices, and oil-gas industry. In industrial automation systems, efficiency is increased in assembly lines or robotic applications where quick filling and unloading operations are required. In the aviation sector, it is ensured that the pressure is discharged quickly for emergencies in aircraft and rockets, and it can be used in brake and suspension systems in the automotive industry. In addition, quick pressure discharge processes can be carried out in natural gas and steam turbines in power plants and high-pressure gasses are controlled in the oil-gas industry.

[0048] The raw material of the quick discharge valve is a stainless steel (17-4 steel) consisting of chrome and nickel alloy, it is not brass or casting as in the current products. Its raw material contains 17% chromium and 4% nickel. Chrome provides corrosion resistance in stainless steel. Nickel, on the other hand, increases the strength while at the same time increasing the corrosion resistance. The quick discharge valve is resistant to oxidation (rust) in the environments where it is used.

[0049] The temperature of the quick discharge valve developed for use in high pressure pneumatic systems is between -40°C and +80°C. This ensures that the valve can operate reliably at low temperatures (-40°C) and high temperatures (+80°C). Various tests were performed to check the operability of the quick discharge valve at low temperatures. Preparations for the low temperature environmental conditions test were started by connecting and fixing the unit to the test device, then sealing elements were applied and processed with teflon tape. The pressure tanks were filled, and the suitability of the pressure and temperature values was checked. The units are pressurized with equipment suitable for occupational safety on the test table. The unit was dried and cleaned before the environmental conditions were placed in the cabinet. The unit was placed in the environmental conditions test device and the image was processed by applying the test program. The unit was placed in the environmental conditions device and the test was carried out and visualized. At the end of the test, the environmental conditions were turned off and the image of the unit was processed. Finally, the preparation of the unit for other processes was carried out.

[0050] Test Number Temperature Ramp (min) Test (min) Humidity (%) (°C)

[0051] 1 10.0 5 1 0.0 2 0.0 5 1 0.0 3 -10.0 5 1 0.0 4 -20.0 5 120 0.0 5 0.0 0 0 0.0 6 0.0 0 0 0.0

[0052]

[0053] Table 1: Low Temperature Environmental Conditions Test

[0054] Step Temperature Ramp (min) Test (min) Humidity (°C) (%) Set 0 0.0 0 0 0.0 Real 0 -20.0 0 0 55.4

[0055]

[0056] Table 2: Low Temperature Environmental Conditions Test A 1 / 2 quick exhaust is mounted on the test jig and a pressure gauge is connected to the inlet ports for leakage control. The unit was pressurized with 100 bars with 1 -liter pneumatic tube. For the environmental conditions first test, the cabinet was programmed to stand at -20°C for 2 hours and the unit was tested. It was observed that the unit pressure was 80±5 bar at -20°C. At the end of the test, it was determined that the pressure was 100±5 bar when the unit reached room temperature and there was no pressure value in the other inlet connections. By performing the pressure discharge process, the instantaneous discharge status around 30 bar was observed positively.

[0057] The test was also performed to check its operability at high temperature. Preparations for the high temperature environmental conditions test were started by connecting and fixing the unit to the test device. The process was completed with teflon tape by applying sealing elements. The pressure tanks were filled, and the suitability of the pressure and temperature values was checked. The units are pressurized with equipment suitable for occupational safety on the test table. The unit was dried and cleaned before the environmental conditions were placed in the cabinet. The test program was applied in the environmental conditions test device and its image was processed. The unit was placed in the environmental conditions test device and the test was carried out, then the visual was recorded. At the end of the test, the environmental conditions were turned off and the image of the unit was taken. Finally, the unit was removed from the test apparatus and visual and measurement control was performed.

[0058] Test Number Temperature Ramp (min) Test (min) Humidity (%) (°C)

[0059] 1 15.0 1 5 0.0 2 30.0 1 5 0.0 3 55.0 1 240 0.0 4 30.0 1 5 0.0 5 10.0 5 5 0.0 6 0.0 0 0 0.0

[0060]

[0061] Table 3: Low Temperature Environmental Conditions Test Step Temperature (°C) Ramp (min) Test (min) Humidity (%) Set 5 55.0 5 120 0.0

[0062] Real 5 55.3 0 1 23.7

[0063]

[0064] Table 4: Low Temperature Environmental Conditions Test

[0065] The 1 / 2 quick exhaust was pressurized with 100 bar pressure after the first environmental conditions test and for the environmental conditions second test, the cabinet was programmed and tested to stand at +55°C for 2 hours. It was observed that the unit pressure at 55°C was 130±5 bar. At the end of the test, it was determined that the pressure was 100±5 bar when the unit reached room temperature and there was no pressure value in the manometers in the other inlet connections. The unit was then reduced to 30 bar pressure and the quick exhaust opening process was carried out.

Claims

CLAIMS1. A quick discharge valve characterized in comprising;• a spring (3) which opens quick discharge outlet (A) by pushing poppet (4) upwards (X) against pressurized air coming from air inlet (C) and moving the poppet (4) downwards (Y) when pressure drops,• a poppet (4), which is pushed upwards (X) by pressurized air entering from the air inlet (C) located on interface (1), provides air flow, and when pressure drops, it moves downwards (Y) with help of the spring (3) and performs quick discharge process,• a quick discharge outlet (A), which opens when the poppet (4) is pushed downwards (Y) by means of the spring (3), allowing the pressurized air accumulated in the system to be discharged.

2. A quick discharge valve according to claim 1, characterized in that it comprises an interface (1) wherein the compressed air inlet (C) is positioned and wherein the quick discharge valve is connected to the relevant place.

3. A quick discharge valve according to claim 1, characterized in that it comprises a body (2) on which the quick discharge valve is placed, with an air outlet (B) leading to storage tanks and the quick discharge outlet (A) required during quick discharge.

4. A quick discharge valve according claim 3, characterized in that said body (2) is made of a stainless steel consisting of chrome and nickel alloy.

5. A quick discharge valve according to claim 1, characterized in comprising a first sealing element (5) and a second sealing element (6) that allows the ducts to be closed to prevent air leaks during the movement of the poppet (4).

6. A quick discharge valve according claim 5, characterized in that said first sealing element (5) is made of carbonized teflon.

7. A quick discharge valve according to claim 5, characterized in that said second sealing element (6) is made of a piston seal containing bronzed teflon and nitrile butadiene rubber.

8. A quick discharge valve according claim 1, characterized in comprising a gasket (7) that prevents the air pressure in the body (2) from leaking out.

9. A quick discharge valve according claim 1, characterized in comprising a bolt (8) for mounting the first sealing element (5).

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