Filling and discharge valve

Abstract

The invention relates to a three-port filling and discharge valve with two operating positions developed for use in high pressure pneumatic systems.

Description

[0001] FILLING AND DISCHARGE VALVE

[0002] Technical Field

[0003] The invention relates to a three-port filling and discharge valve with two operating positions developed for use in high pressure pneumatic systems.

[0004] State of the Art

[0005] Solenoid valves are automatic valves used to control fluids in pneumatic systems. These valves are operated with electrical energy and are activated by sending electrical current to a solenoid coil. A mechanical movement is initiated in the valve by magnetizing the coil with the sent current. When the current is cut off, the valve is returned to its original position by means of return springs or other mechanical elements.

[0006] It is known that solenoid valves, which are widely preferred in the industry, are used to control the movement of air, gas, or liquid. These valves are used to ensure fast and precise control, especially in automation processes. The valves allow the regulation of the air pressure, fluid direction and flow rate in the system. In this way, linear and rotational movements are provided in production lines and transportation systems, and the operation of the system is made possible without the need for manual intervention.

[0007] Solenoid valves are preferred due to their advantages such as fast response and remote control. These valves, which have different types such as 2-way, 3 -way, and 4-way, are especially used in pneumatic systems operating with compressed air as well as hydraulic systems carrying liquid and gas. In addition, it is known to be widely used in various fields such as industrial automation, water treatment systems, HVAC systems and oil-gas industry.

[0008] In the current system, there are patent / utility model applications and articles related to the subject. Patent application "CN1386992A" in the state of the art relates to a high-pressure pneumatic switching control valve used for gas volume expansion and pressure reduction control in high pressure pneumatic systems. It consists of an electromagnetic pilot valve and main valve part. The main valve provides effective control of high-pressure gas by providing a dynamic seal with a conical valve core and valve sleeve. The electromagnetic valve controls the flow of gas and allows the main valve to be opened and closed. It supports energyefficient volume expansion and pressure reduction control and uses materials such as teflon and vulcanized rubber to ensure low friction resistance and high-pressure gas sealing. In addition, the poppet valve acts with pressure difference and spring force during the opening and closing of the valve.

[0009] Patent application "CN107883000A" in the state of the art relates to high pressure and large flow pneumatic electromagnetic switching valve. The valve is designed to provide large flow rates and fast response times, especially for high pressure pneumatic motors. The valve can operate in two ways, internal control type and external control type, and can be adapted to different control requirements. The main components include a body, electromagnet unit, valve core unit, valve body unit, sealing plug and high-pressure gas inlet plug.

[0010] Patent application "EP3155495B1" in the state of the art relates to the pressure relief valve for a pressure regulator and the pressure regulator containing the pressure relief valve. It comprises a deformable and the gas-tight plate-like element comprises an outflow channel that permits gas passage from one side to the other side of the plate-like element comprising a precisely sized hole, a closure detachably connected to the plate-like element, a connection element defining the closed position of the outflow channel for the closure and the open position of the outflow channel, a flexible element arranged between the closure and the platelike element to push the closure towards the closed position.

[0011] In existing systems, it is seen that high pressure pneumatic control valves and pressure regulation systems use electromagnetic pilot valves and main valves to provide functions such as gas volume expansion and pressure reduction control. In these systems, dynamic sealing, large flow rates, fast response times and pressure relief features are emphasized. However, it is known that the materials used can lead to wear and sealing problems in the long term. In addition, it has been observed that mechanical wear and performance losses may occur due to pressure differences and spring forces during the control of large fluid flow rates. It is thought that the complexity of systems can increase maintenance requirements and have negative effects on energy efficiency.

[0012] Existing systems usually operate at a maximum pressure of 20 bar. However, there are also systems operating at higher pressures, but large size solenoid groups operating at 48 V are used in these systems. In addition, the flow rate of the valve groups of these systems is very low and the products with the desired flow rates cover a lot of space. Due to the fact that the solenoid groups move the poppet directly, high energy requirement arises, which causes the need for an energy source at 48 Volt DC power.

[0013] In some embodiments, the air in the containers at a pressure of 80-100 bar must be quickly filled and discharged. However, existing products usually operate at low pressure levels, and it can take as long as 30-40 seconds to complete this process. In addition, systems operating at high pressure are generally large in size, and the electrical requirement of the solenoid groups is high for the vehicles to be used. This creates significant disadvantages both in terms of efficiency and space use.

[0014] As a result, there is a need for technologies that provide rapid evacuation due to the negativities described above and the inadequacy of the current solutions on the subject.

[0015] Brief Description and Objects of the Invention

[0016] The invention relates to a three-port filling and discharge valve with two operating positions 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.

[0017] The filling and discharge valve developed with the invention functions with lower forces because it works by directing the air inside it completely. In this way, the solenoid group used in the system has a simpler structure and can only operate with 24 Volt DC energy. This feature not only improves energy efficiency, but also offers a more compact and easily integrable solution.

[0018] The valve developed by the invention can complete this filling and discharge process within a maximum of 5 seconds. Thanks to its electromechanical structure that directs the air pressure, the system works by using two solenoids operating at 24 Volt DC, thus ensuring energy efficiency, and offering a more compact solution. These properties make our system faster, more effective and energy efficient.

[0019] Since the air in the system is filled and quickly discharged due to the valve, these operations can be carried out in a much shorter time in repetitive tasks. This speed and efficiency allow significant successes to be achieved, especially in systems where pneumatic operation is difficult. In this way, the operating costs of the systems are reduced, and the valve becomes an indispensable product in the applications needed. The valve developed with the invention has an automatic position renewal feature. The coil spring it contains allows the poppet to return to its previous position automatically after the filling process. This ensures that the system is constantly ready for use and does not require a manual operation.

[0020] The valve has low energy consumption. Since the filling solenoid and the discharge solenoid operate with 24 Volt DC power, it provides low energy consumption, which increases the overall energy efficiency of the system.

[0021] The valve also enables high flow rate filling and discharging. The holes on the liner allow the gas to be evenly distributed inside the valve, ensuring a high flow rate during filling, and discharging. This ensures faster and more efficient filling and discharge operations.

[0022] Figures

[0023] Figure 1 : A view of the filling and discharge valve.

[0024] Figure 2: A detailed view of the liner.

[0025] Figure 3: A sectional view of the filling and discharge valve.

[0026] Figure 4: A view of the three parts of the filling and discharge valve.

[0027] References

[0028] In order to better explain the filling and discharge valve developed by this invention, the parts and components in the figures are numbered and the corresponding numbers are given below:

[0029] 1. Body

[0030] 2. Poppet

[0031] 3. Sealing element

[0032] 4. Liner

[0033] 5. Coil Spring

[0034] 6. Filling solenoid

[0035] 7. Discharge solenoid

[0036] A. Inlet gas filling port

[0037] B. Gas outlet

[0038] C. Gas inlet Detailed Description of the Invention

[0039] The invention relates to a three-port filling and discharge valve with two operating positions developed for use in high pressure pneumatic systems.

[0040] In the filling and discharge valve, it comprises a body (1) to which all elements of the system are connected. Inlet gas filling port (A), gas inlet (C) and gas outlet (B) ports are located on this body (1). In addition, the filling solenoid (6) and the discharge solenoid (7) are positioned to be connected to the body (1). The body (1) is made of AISI 316 stainless steel. 316 stainless steels contain 16% chromium and 10% nickel. In addition, it contains 2% molybdenum. Among the most prominent features of 316 grade stainless steels is the extra corrosion resistance provided by molybdenum. It also has resistance to high temperatures.

[0041] The valve also includes a poppet (2) that controls the direction of the gas and provides the gas flow by moving during the filling and discharge stages. There is also a coil spring (5) that allows the poppet (2) to return to its previous position after filling and prevents the poppet from moving during the gas filling process. The sealing element (3), which is positioned on the inner side of the filling and discharge valve and works with the poppet (2) during the movement and closes and opens the air ducts, ensures that the gas remains in the determined area. In addition, the poppet (2) keeps the gas statically when it is not moving. The sealing test also confirms that the system is sealed. In the leakage test, first, the conformity to the assembly picture and dimensions of the unit was checked and the unit was connected to the test device and fixed. The necessary elements were carefully applied to ensure sealing before the test and teflon tape was used at this stage. Then, the pressure tanks were filled and the suitability of both pressure and temperature values was checked. After the units were pressurized, they were kept for 15 minutes, and it was observed whether the necessary conditions were met before the sealing test. After these stages were completed, the unit was made ready for sealing test. The 3 / 2 valve was connected to the test assembly and the valve was allowed to change position with the 30-bar pressure given from the pilot line. Then, 100 bar pressure was applied to the main line of the valve and leakage control was performed in terms of sealing. After this stage, the unit was kept under this pressure for 192 hours. At the end of the test period, no pressure loss was observed, and it was found that the pressure in the manometer was still 100 bar. The filling solenoid (6) converts the 24 Volt DC energy given for the movement of the poppet (2) into motion energy. In other words, the filling solenoid (6) provides the movement of the poppet (2) and starts the filling stage to the filling and discharge valve of the gas. The discharge solenoid (7) empties the valve by converting the 24 Volt DC energy given to discharge the pressure after the movement of the poppet (2) into motion energy. In other words, the discharge solenoid (7) releases the pressure on the poppet (2) after filling and allows the gas to be discharged from the system.

[0042] There is also a liner (4) in the filling and discharge valve that allows the gas from a single region from the gas inlet (C) and gas outlet (B) ports of the gas to be distributed evenly. The liner (4) also provides high flow during filling and discharge.

[0043] The working principle of the filling and discharge valve is to perform the filling and discharge of the gas with a high flow rate. First of all, the gas enters the filling and discharge valve from the gas inlet (C) on the body (1). Thanks to the holes on the liner (4) made of bronze, shown in detail in Figure 2, the gas is distributed in the valve in a completely surrounded manner and becomes ready for the filling or discharge process. Meanwhile, the sealing element (3) ensures that the gas remains in the desired area and does not leak out. The sealing element (3) shown in detail in Figure 4 is made of polyetheretherketone (PEEK) and carbon teflon material. When the poppet (2) is not moving, it prevents the gas from leaking and ensures that it remains in the valve statically.

[0044] Then, the filling solenoid (6) is subtracted by giving 24 Volt DC power. When the coil in the filling solenoid (6) is powered with 24 Volt DC, the core in it becomes a magnet and moves. During this movement, the channel under the core is opened and the right side of the poppet is filled with gas and the poppet (2) moves to the left with the force created by the pressurized gas in the area. Therefore, the filling solenoid (6) is used for the movement of the poppet (2). The system moves completely with gas, but the filling solenoid (6) and the discharge solenoid (7) make the passage of this gas between the rooms.

[0045] This opens the gas outlet (B) and allows gas to be filled into an actuator (storage tank, cylinder, etc.) at the outlet of the inlet gas filling port (A), i.e. into the desired volume. When the filling solenoid (6) is closed and the discharge solenoid (7) is opened, the gas pressure that pushes the poppet (2) is eliminated and the coil spring (5) is activated and brings the poppet (2) to its previous position. Finally, the pressurized gas in the inlet gas filling port (A) is discharged from the system through the gas outlet (B). This ensures that the system is safely discharged after the continuous filling process.

[0046] The system opens the filling port by means of the filling solenoid (6) and performs the gas filling to the required volume in an environment where the gas is kept statically thanks to the sealing element (3). After the filling is completed, the discharge solenoid (7) and the poppet (2) are brought to their previous position and the pressurized gas in the system is discharged through the gas outlet line. Thanks to this mechanism, high flow filling and discharge operations are carried out in a controlled and efficient way.

[0047] The filling and discharge valve developed for use in high pressure pneumatic systems is suitable for use at low and high temperatures. The working temperature of the filling and discharge valve is between -32°C and +55°C. The storage temperature is between -40°C and +80°C. Various tests were performed to check the operability of the filling and 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.

[0048] Test Number Temperature Ramp (min) Test (min) Humidity (%) (°C)

[0049] 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

[0050]

[0051] Table 1: Low Temperature Environmental Conditions Test Step Temperature Ramp (min) Test (min) Humidity (°C) (%) Set 0 0.0 0 0 0.0 Fact 0 -20.0 0 0 55.4

[0052]

[0053] Table 2: Low Temperature Environmental Conditions Test

[0054] In the low temperature environmental conditions test, the 3 / 2 valve was first mounted on the test jig. A pressure gauge is connected to the outlet and inlet ports to check for leakage. The unit was pressurized with 100 bar pressure using a 1 Liter capacity pneumatic tube. For the first test in accordance with environmental conditions, the cabinet was programmed and tested to stand for 2 hours at -20°C. During the test, the pressure of the unit was measured as 80±5 bar at -20°C. At the end of the test, it was observed that the pressure was 100±5 bar when the unit reached room temperature and there was no pressure in the other inlet-outlet connections.

[0055] 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.

[0056] Step Temperature Ramp (min) Test (min) Humidity (°C) (%)

[0057] Set 5 55.0 5 120 0.0

[0058] Fact 5 55.3 0 1 23.7

[0059]

[0060] Table 3: High Temperature Environmental Conditions Test The 3 / 2 pneumatic valve was pressurized with 100 bar pressure after the first environmental conditions test. In the second test for environmental conditions, the cabinet was programmed to stand at +55°C for 2 hours and the valve was tested. During the test, it was observed that the pressure of the unit was 140±5 bar at 55°C. After the test was completed, it was determined that the pressure was 100±5 bar when the unit returned to room temperature and there was no pressure value in the manometers in the inlet-outlet connections.

[0061] In addition, the unit opening test was carried out and the opening process was carried out successfully at high flow rate. After all tests, a 50-turn cycle test under 100 bar pressure was performed and no abnormalities were observed.

[0062] The filling and discharge valve developed with the invention is 220x127x76 mm in size and weight 4 kg.

Claims

CLAIMS1. A filling and discharge valve characterized in comprising;• a poppet (2) that provides gas flow by being pushed to the left by means of the pressurized gas entering from gas inlet (C) and filling solenoid (6) and provides rapid discharge from inlet gas filling port (A) by moving with the help of coil spring (5) when pressure drops with the help of discharge solenoid (7),• a coil spring (5) that allows the poppet (2) to be pushed against pressure from gas inlet (C), prevents poppet from moving during the gas filling process and opens gas outlet (B) by bringing the poppet (2) to its previous position when the pressure decreases,• a liner (4) for even distribution of gas coming from gas inlet (C) through holes on it inside the valve.

2. A filling and discharge valve according to claim 1, characterized in comprising a body (1) on which an inlet gas filling port (A), a gas outlet (B) and a gas inlet (C) are located.

3. A filling and discharge valve according to claim 2, wherein said body (1) made of a stainless-steel containing nickel, chrome and mobile.

4. A filling and discharge valve according to claim 1, characterized in comprising a sealing element (3) that allows the ducts to be closed to prevent air leaks during the movement of the poppet (2).

5. A filling and discharge valve according to claim 4, wherein said sealing element (3) is made of polyetheretherketone and carbonized teflon.

6. A filling and discharge valve according to claim 1, characterized in comprising a filling solenoid (6) which is powered by 24 Volt DC power, and which converts electrical energy into mechanical movement and moves the poppet (2).

7. A filling and discharge valve according to claim 1, characterized in comprising a discharge solenoid (7) powered by 24 Volt DC power for releasing the pressure on the poppet (2) from gas outlet (B) after the filling operation is completed.

8. A filling and discharge valve according to claim 1, wherein said liner (4) is made of bronze.

9. A filling and discharge valve according to claim 1, characterized in comprising an operating temperature of said valve is between -32°C and +55°C.

10. A filling and discharge valve according to claim 1, wherein storage temperature of said valve is between -40°C and +80°C.

11. A filling and discharge valve according to claim 1, wherin said valve is 220 mm wide, 127 mm long and 76 mm high and weight 4 kg.

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