Fuel distribution valve

Abstract

The present application relates to the technical field of hydraulic valve, especially to a fuel distribution valve. The valve comprises a hollow protective cover and a valve cover, the valve cover is arranged on the top of the protective cover, the protective cover is sleeved with a valve body with a through hole arranged in the middle, the lower part of the valve body is provided with a fuel passage, the valve body is sleeved with a valve core, the valve core is hollow, the upper end of the valve core is provided with an opening and the lower end is closed, an elastic member is arranged in the valve core, an adjuster is arranged between the elastic member and the valve cover corresponding to the valve core, a first fuel inlet is arranged on the protective cover corresponding to the bottom end of the valve body, a second fuel inlet is arranged on the valve cover corresponding to the adjuster, and a fuel outlet is arranged in the middle of the protective cover. The present application improves the accuracy of fuel distribution into the oil passage, improves the fuel utilization rate, and the valve can control the opening degree of the valve according to the pressure, flow and other parameters of the gas turbine, so as to achieve the best fuel distribution and unit power.

Description

Technical Field

[0001] This invention relates to the field of hydraulic valve technology, and more particularly to a fuel distribution valve. Background Technology

[0002] A gas turbine is an internal combustion engine that uses a continuously flowing gas as its working fluid to drive blades to rotate at high speed, converting the energy of fuel into useful work. It consists of three main components: a compressor, a combustion chamber, and a turbine. During the start-up process of a gas turbine, the fuel supply directly affects the ignition success rate and ignition stability, making the fuel system a crucial component. Gas turbines require precise fuel control and regulation to achieve optimal combustion efficiency and energy utilization efficiency.

[0003] Traditional control valves can only control the flow of fuel at fixed flow rates, and cannot control the fuel supply to a gas turbine at different power levels. Furthermore, their poor sealing makes them unsuitable for gas turbine fuel systems, posing a risk of fuel leakage. Therefore, a specially designed fuel distribution valve is needed to meet the fuel supply requirements at different power levels, thereby improving the ignition efficiency and unit power of the gas turbine. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to provide a packaging unpacking machine that realizes the pre-sorting of outer packaging bags, improves the accuracy of fuel distribution to the oil circuit, improves fuel utilization, and allows the valve to control the valve opening according to parameters such as gas turbine pressure and flow rate to achieve optimal fuel distribution and unit power.

[0005] This invention provides a fuel distribution valve, comprising a hollow protective cover and a valve cover. The valve cover is placed on top of the protective cover. A valve body with a through hole in the middle is installed inside the protective cover. A fuel passage is provided at the bottom of the valve body. A valve core is installed inside the valve body. The valve core is hollow inside, with an opening at the top and a closed bottom. An elastic element is provided inside the valve core. An adjuster is provided between the elastic element and the valve cover corresponding to the valve core. A first fuel inlet is provided on the protective cover corresponding to the bottom of the valve body. A second fuel inlet is provided on the valve cover corresponding to the adjuster. A fuel outlet is provided in the middle of the protective cover.

[0006] When the fuel distribution valve opens, fuel flows in through the first fuel inlet. As the pressure increases, the fuel pushes the valve core upward, compressing the elastic element. This gradually opens the fuel passage at the bottom of the valve body, allowing fuel to flow out through the fuel outlet. Different fuel supply pressures result in different openings in the fuel passage at the bottom of the valve body, leading to different fuel flow rates at the outlet. When the fuel supply pressure is too high, adjusting the fuel passage opening without changing the fuel supply quantity requires a regulator. Opening the regulator allows fuel to flow into it through the second fuel inlet. The fuel then flows into the valve core, pushing it downward and reducing the fuel passage opening, thus decreasing the fuel flow rate at the outlet.

[0007] A fuel discharge port is provided on the side of the protective cover opposite to the fuel outlet, and a plug is provided at the fuel discharge port to seal it. The fuel discharge port is normally closed. Only when the system abnormally stops supplying fuel, in order to prevent residual fuel from coking inside the valve, the residual fuel inside the valve is discharged through the fuel discharge port under the action of gravity and reaction force.

[0008] The plug and the protective cover are connected by threads to ensure a tight seal between them.

[0009] The plug is connected to a first sealing element, which seals the fuel outlet. This improves the seal between the plug and the protective cover.

[0010] A connector is provided at the bottom of the valve body corresponding to the valve core, and the connector is positioned below the fuel passage. The contact between the valve core and the connector ensures that the valve body is a sealed structure when the fuel distribution valve is closed.

[0011] A second sealing element is fitted around the outer periphery of the connector, improving the sealing performance between the connector and the valve body.

[0012] The valve body is made of high-nickel cast iron. High-nickel cast iron has high strength and corrosion resistance.

[0013] Several third sealing elements are provided between the outer periphery of the middle part of the valve body and the protective cover.

[0014] Several first sealing components are provided between the valve body and the valve core. Each first sealing component includes a sealing gasket and a spring gasket. The sealing gasket protects the fuel distribution valve's sealing performance to ensure the normal operation of the fuel system. The spring gasket increases friction, prevents loosening of the connection, and enhances the sealing performance.

[0015] A second sealing assembly is provided between the bottom outer periphery of the valve body and the protective cover. This improves the sealing performance between the valve body and the protective cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention can adjust the fuel supply in real time and accurately distribute fuel to the oil circuit. Compared with traditional control valves, it increases the stability and sealing of fuel supply, improves fuel utilization, reduces exhaust emissions, and increases power output. Ultimately, it can meet the fuel supply needs of the gas turbine at different power levels to achieve optimal fuel distribution and unit power.

[0018] 2. A fuel drain port is provided on the side of the protective cover opposite to the fuel outlet, and a plug is provided at the fuel drain port to seal it. The fuel drain port is normally closed. Only when the system abnormally stops supplying fuel, in order to prevent residual fuel from coking inside the valve, the residual fuel inside the valve is discharged through the fuel drain port under the action of gravity and reaction force.

[0019] 3. Several first sealing components are provided between the valve body and the valve core. These first sealing components include sealing gaskets and spring gaskets. The sealing gaskets protect the fuel distribution valve's sealing performance to ensure the normal operation of the fuel system. The spring gaskets increase friction, prevent loosening of connections, and enhance sealing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the exploded structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0022] In the diagram: 1. Regulator; 2. Valve cover; 3. Elastic element; 4. Spring washer; 5. Sealing gasket; 6. Valve core; 7. Valve body; 8. Third seal; 9. Second seal; 10. Connector; 11. Second sealing assembly; 12. Protective cover; 13. First seal; 14. Plug; 15. Fuel outlet; 16. Fuel outlet; 17. Fuel passage; 18. First fuel inlet; 19. Second fuel inlet. Detailed Implementation

[0023] The present invention will be further described below with reference to embodiments:

[0024] Example 1

[0025] like Figures 1-2As shown, the fuel distribution valve of the present invention includes a hollow protective cover 12 and a valve cover 2. The valve cover 2 is placed on top of the protective cover 12. A valve body 7 with a through hole in the middle is installed inside the protective cover 12. A fuel passage 17 is provided at the lower part of the valve body 7. A valve core 6 is installed inside the valve body 7. The valve core 6 is hollow inside, with an opening at the upper end and a closed lower end. An elastic element 3 is provided inside the valve core 6. An adjuster 1 is provided between the elastic element 3 and the valve cover 2 corresponding to the valve core 6. A first fuel inlet 18 is provided on the protective cover 12 corresponding to the bottom end of the valve body 7. A second fuel inlet 19 is provided on the valve cover 2 corresponding to the adjuster 1. A fuel outlet 16 is provided in the middle of the protective cover 12.

[0026] Work process:

[0027] When the fuel distribution valve opens, fuel flows in from the first fuel inlet 18. As the pressure increases, the fuel pushes the valve core 6 upward, compressing the elastic element 3. The fuel passage 17 at the bottom of the valve body 7 gradually opens, and fuel flows out from the fuel passage 17 through the fuel outlet 16. Different fuel supply pressures result in different openings in the fuel passage 17 at the bottom of the valve body 7, thus affecting the fuel flow rate at the fuel outlet 16. When the fuel supply pressure is too high, adjusting the opening size of the fuel passage 17 without changing the fuel supply quantity requires the regulator 1. Opening the regulator 1 allows fuel to flow into it from the second fuel inlet 19. The fuel then flows into the valve core 6 through the regulator 1, pushing the valve core 6 downward, thereby reducing the opening of the fuel passage 17 and decreasing the fuel flow rate at the fuel outlet 16.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention can adjust the fuel supply in real time and accurately distribute fuel to the fuel circuit. Compared with traditional control valves, it increases the stability and sealing of fuel supply, improves fuel utilization, reduces exhaust emissions, and increases power output. Ultimately, it can meet the fuel supply needs of the gas turbine at different power levels to achieve optimal fuel distribution and unit power.

[0030] Example 2

[0031] like Figures 1-2 As shown, the fuel distribution valve of the present invention includes a hollow protective cover 12 and a valve cover 2. The valve cover 2 is placed on top of the protective cover 12. A valve body 7 with a through hole in the middle is installed inside the protective cover 12. A fuel passage 17 is provided at the lower part of the valve body 7. A valve core 6 is installed inside the valve body 7. The valve core 6 is hollow inside, with an opening at the upper end and a closed lower end. An elastic element 3 is provided inside the valve core 6. An adjuster 1 is provided between the elastic element 3 and the valve cover 2 corresponding to the valve core 6. A first fuel inlet 18 is provided on the protective cover 12 corresponding to the bottom end of the valve body 7. A second fuel inlet 19 is provided on the valve cover 2 corresponding to the adjuster 1. A fuel outlet 16 is provided in the middle of the protective cover 12.

[0032] Preferably, a fuel discharge port 15 is provided on the side of the protective cover 12 opposite to the fuel outlet 16, and a plug 14 is provided at the fuel discharge port 15 to block the fuel discharge port 15.

[0033] Preferably, the plug 14 and the protective cover 12 are connected by threads.

[0034] Preferably, the plug 14 is connected to a first seal 13, and the plug 14 seals the fuel discharge port 15 through the first seal 13.

[0035] Preferably, a connector 10 is provided at the bottom of the valve body 7 corresponding to the valve core 6, and the connector 10 is located below the fuel passage 17.

[0036] Preferably, a second sealing element 9 is fitted around the outer periphery of the connector 10.

[0037] Preferably, the valve body 7 is made of high-nickel cast iron.

[0038] Preferably, a number of third sealing elements 8 are provided between the outer periphery of the middle part of the valve body 7 and the protective cover 12.

[0039] Preferably, a plurality of first sealing components are provided between the valve body 7 and the valve core 6, the first sealing components including sealing gaskets 5 and spring gaskets 4.

[0040] Preferably, a second sealing component 11 is provided between the bottom outer periphery of the valve body 7 and the protective cover 12.

[0041] Work process:

[0042] When the fuel distribution valve opens, fuel flows in from the first fuel inlet 18. As the pressure increases, the fuel pushes the valve core 6 upward, compressing the elastic element 3. The fuel passage 17 at the bottom of the valve body 7 gradually opens, and fuel flows out from the fuel passage 17 through the fuel outlet 16. Different fuel supply pressures result in different openings in the fuel passage 17 at the bottom of the valve body 7, thus affecting the fuel flow rate at the fuel outlet 16. When the fuel supply pressure is too high, adjusting the opening size of the fuel passage 17 without changing the fuel supply quantity requires the regulator 1. Opening the regulator 1 allows fuel to flow into it from the second fuel inlet 19. The fuel then flows into the valve core 6 through the regulator 1, pushing the valve core 6 downward, thereby reducing the opening of the fuel passage 17 and decreasing the fuel flow rate at the fuel outlet 16.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] This invention can adjust the fuel supply in real time and accurately distribute fuel to the fuel circuit. Compared with traditional control valves, it increases the stability and sealing of fuel supply, improves fuel utilization, reduces exhaust emissions, and increases power output. Ultimately, it can meet the fuel supply needs of the gas turbine at different power levels to achieve optimal fuel distribution and unit power.

[0045] The descriptions of the orientation and relative positional relationships of the structures in this invention, such as front, back, left, right, up, and down, do not constitute a limitation of this invention, but are merely for the convenience of description.

Claims

1. A fuel distribution valve, comprising an internally hollow protective cover (12) and a valve cover (2), the valve cover (2) being positioned on top of the protective cover (12), characterized in that, A valve body (7) with a through hole in the middle is installed inside the protective cover (12). A fuel passage (17) is provided at the lower part of the valve body (7). A valve core (6) is installed inside the valve body (7). The valve core (6) is hollow inside, with an opening at the upper end and a closed lower end. An elastic element (3) is provided inside the valve core (6). An adjuster (1) is provided between the elastic element (3) and the valve cover (2) corresponding to the valve core (6). A first fuel inlet (18) is provided on the protective cover (12) corresponding to the bottom end of the valve body (7). A second fuel inlet (19) is provided on the valve cover (2) corresponding to the adjuster (1). A fuel outlet (16) is provided in the middle of the protective cover (12). When the fuel distribution valve is opened, fuel flows in from the first fuel inlet (18). As the pressure increases, the fuel pushes the valve core (6) upward, which in turn moves the elastic element (19) upward. When component (3) is compressed, the fuel passage (17) at the bottom of the valve body (7) gradually opens, and fuel flows out from the fuel passage (17) through the fuel outlet (16). Different fuel supply pressures result in different openings of the fuel passage (17) at the bottom of the valve body (7), so the fuel flow rate at the fuel outlet (16) is different. When the fuel supply pressure is too high, without changing the fuel supply quantity, if you want to adjust the size of the opening of the fuel passage (17), you need to use the regulator (1). When the regulator (1) is opened, fuel flows into the regulator (1) from the second fuel inlet (19), and fuel flows into the valve core (6) through the regulator (1), pushing the valve core (6) to move downward, thereby reducing the opening of the fuel passage (17) and reducing the fuel flow rate at the fuel outlet (16).

2. The fuel distribution valve according to claim 1, characterized in that, A fuel outlet (15) is provided on the side of the protective cover (12) opposite to the fuel outlet (16), and a plug (14) is provided at the fuel outlet (15) to block the fuel outlet (15).

3. The fuel distribution valve according to claim 2, characterized in that, The plug (14) and the protective cover (12) are connected by threads.

4. The fuel distribution valve according to claim 3, characterized in that, The plug (14) is connected to the first seal (13), and the plug (14) seals the fuel outlet (15) through the first seal (13).

5. The fuel distribution valve according to claim 1, characterized in that, A connector (10) is provided at the bottom of the valve body (7) corresponding to the valve core (6), and the connector (10) is located below the fuel passage (17).

6. The fuel distribution valve according to claim 5, characterized in that, A second sealing element (9) is fitted around the outer periphery of the connector (10).

7. The fuel distribution valve according to any one of claims 1-6, characterized in that, Several third seals (8) are provided between the outer periphery of the middle part of the valve body (7) and the protective cover (12).

8. The fuel distribution valve according to claim 7, characterized in that, Several first sealing components are provided between the valve body (7) and the valve core (6). The first sealing components include sealing gaskets (5) and spring gaskets (4).

9. The fuel distribution valve according to claim 7, characterized in that, A second sealing assembly (11) is provided between the bottom outer periphery of the valve body (7) and the protective cover (12).

10. The fuel distribution valve according to claim 7, characterized in that, The valve body (7) is made of high-nickel cast iron.

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