Integrated quick-response two-way opening valve

Abstract

The invention discloses an integrated quick-response two-way opening valve which comprises a valve shell, an air cylinder is fixedly installed at the top of the valve shell through a flange plate, a quick-closing valve seat is fixedly arranged on the lower portion of the interior of the valve shell, a pressure release valve seat is fixedly arranged on the upper portion of the interior of the valve shell, and a fluid outflow cavity located below the quick-closing valve seat is formed in the valve shell. A fluid inlet cavity located on one side of the quick-closing valve seat is formed in the valve shell, and a fluid emergency pressure relief cavity located above the pressure relief valve seat is formed in the valve shell. According to the invention, the functions of quick closing and quick opening can be realized in an extremely short time, and the action time can be kept within 0.5 S. Due to the fact that the quick-closing valve and the quick-opening valve can act on the same valve rod at the same time, the time delay does not exist. The auxiliary valve rod is arranged in the protective sleeve at ordinary times and extends out of the protective sleeve during action, and if impurities exist in fluid, the auxiliary valve rod can be prevented from being jammed through the structure. And an adjusting function can be conveniently realized according to requirements.

Description

Technical Field

[0001] The invention relates to the technical field of control valves, and in particular to an integrated fast-response two-way opening valve. Background Art

[0002] In some specific cases, the upstream production process will produce pressurized fluids (such as steam, fermentation exhaust gas, etc.), such as Fig.13 As shown in the flow chart of the process fluid flow, these are used for downstream production processes. In many cases, due to production fluctuations, the amount of fluid generated by the upstream process does not match the amount of fluid used by the downstream process. In particular, when the fluid generated by the upstream process is greater than the downstream production needs, it will cause the fluid pressure to increase, and in severe cases, it may lead to danger.

[0003] For production safety, the need to urgently cut off the fluid in the downstream process must be taken into consideration. To prevent the pressure build-up caused by sudden blockage and interruption of the fluid pipeline in the upstream process, two valves must be added. One valve is used to cut off the fluid passage of the downstream process to prevent the fluid from continuing to enter when a failure occurs in the downstream production, thereby exacerbating the development of the failure. Generally speaking, the faster the cut-off speed of the cut-off valve, the better the production safety. When the downstream fluid passage is cut off, the fluid produced by the upstream production needs to be quickly unloaded, otherwise it will trigger actions such as safety valves. In this case, a quick-opening valve needs to be set on the pipeline to prevent the upstream pressure from rising rapidly.

[0004] However, because the quick-closing valve and the quick-opening valve are two independent devices, there may be a loss of interlocking signal or a delay in action time when opening and closing.

[0005] There are coordination and timeliness issues in the downstream rapid cut-off of the fluid pipeline and the rapid discharge of the upstream process. In the original pipeline design, when the quick-closing valve is closed, the quick-opening valve does not receive the opening signal, resulting in the fluid passage being cut off, or due to the slow opening speed of the valve, the upstream produced fluid has no place to go and the pressure continues to rise, resulting in the action of the safety valve and even shutdown and accidents. Therefore, it is urgent to design an integrated quick-response two-way opening valve to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide an integrated fast-response two-way opening valve to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions: An integrated quick-response two-way opening valve comprises a valve housing, a cylinder is fixedly installed on the top of the valve housing through a flange, a quick-closing valve seat is fixedly arranged at the lower part of the interior of the valve housing, and a pressure relief valve seat is fixedly arranged at the upper part of the interior of the valve housing, a fluid outflow chamber located below the quick-closing valve seat is arranged inside the valve housing, and a fluid inlet chamber located on one side of the quick-closing valve seat is arranged inside the valve housing, a fluid emergency pressure relief chamber located above the pressure relief valve seat is arranged inside the valve housing, a valve core is slidingly arranged inside the quick-closing valve seat and the pressure relief valve seat, a main valve stem is fixedly installed on the outer wall of the top of the valve core, a piston is slidingly arranged inside the cylinder, the bottom of the piston is fixedly connected to the top of the main valve stem, a spring chamber is arranged on the top of the piston, and a main spring is arranged inside the spring chamber, an opening solenoid valve is arranged on one side of the cylinder through a gas pipeline, and a closing solenoid valve is arranged on the other side of the cylinder through a gas pipeline.

[0008] Furthermore, a base is fixedly arranged on the outer wall of the bottom of the valve housing.

[0009] Furthermore, one end of the valve housing is provided with a pressure relief fluid port and a fluid discharge port distributed up and down, and the pressure relief fluid port and the fluid discharge port are respectively connected to the fluid emergency pressure relief chamber and the fluid outflow chamber.

[0010] Furthermore, a secondary valve stem is fixedly mounted on the outer wall of the piston top, a sheath sleeved on the outside of the secondary valve stem is provided on the top of the spring chamber, and the main spring sleeved on the outside of the secondary valve stem.

[0011] Furthermore, the opening solenoid valve and the closing solenoid valve have the same structure, and both the opening solenoid valve and the closing solenoid valve are normally open single-acting two-position three-way solenoid valves.

[0012] Furthermore, the opening solenoid valve includes a shell, an air port 2 is arranged above the outer wall of one side of the shell, and an air port 1 is arranged below the outer wall of one side of the shell, and an air port 3 is arranged on the outer wall of the other side of the shell, an electromagnetic slide valve is slidably arranged inside the shell, an electromagnetic valve spring located at the top of the electromagnetic slide valve is fixedly arranged inside the top of the shell, and an electromagnetic coil is arranged at the bottom end of the shell.

[0013] Furthermore, an air inlet 1 connected in three phases to the air port on the opening electromagnetic valve is provided on one side outer wall of the cylinder, and an air inlet 2 connected in three phases to the air port on the closing electromagnetic valve is provided on the other side outer wall of the cylinder.

[0014] Furthermore, when the electromagnetic coil of the solenoid valve is energized, the electromagnetic slide valve moves upward, and air ports 1 and 3 are connected to the compressed air to enter the lower part of the cylinder through air inlet 1. At this time, air inlet 2 of the cylinder is connected in series with air port 1 of the closed solenoid valve. At this time, the electromagnetic coil of the closed solenoid valve is energized, and the electromagnetic slide valve moves upward to cut off air ports 2 and 3 of the closed solenoid valve. Then, compressed air can only be filled into the lower part of the cylinder to push the piston upward. The compressed air path for opening the solenoid valve is air port 2, air port 3 and air inlet 1.

[0015] Furthermore, the electromagnetic coils for opening the electromagnetic valve and closing the electromagnetic valve are simultaneously de-energized; The solenoid valve spring of the opened solenoid valve pushes the solenoid slide valve downward. At this time, the air port 1 and air port 3 of the opened solenoid valve cut off the compressed air from entering the cylinder. At the same time, the air port 2 and air port 3 are connected. The air port 2 of the opened solenoid valve is connected to the atmosphere.

[0016] Furthermore, the solenoid valve spring of the closed solenoid valve pushes the solenoid slide valve downward, connecting air port 2 and air port 3. Air port 3 of the closed solenoid valve is connected to the atmosphere. The compressed air in the cylinder is not replenished with compressed air but leaks into the atmosphere in large quantities, causing the pressure below the piston to be equal to the pressure above the piston. In this way, the spring force of the main spring is released, and the valve core is pushed downward rapidly through the piston and the main valve stem. The process fluid is cut off and cannot continue to flow to the fluid outflow chamber. At the same time, the pressure relief valve seat is quickly separated from the valve core, and the process fluid flows from the fluid inlet chamber to the fluid to the emergency pressure relief chamber.

[0017] In the above technical scheme, the integrated fast response two-way opening valve provided by the present invention can realize the quick closing and quick opening functions in a very short time, and the action time can be kept within 0.5S. There is no delay, because the quick closing valve and the quick opening valve can act simultaneously on one valve stem, and there is no delay. The auxiliary valve stem is usually in the sheath, and extends out of the sheath when it is in action. If there are impurities in the fluid, this structure can prevent the auxiliary valve stem from getting stuck. The adjustment function can be easily realized according to needs, and modularization is achieved. Because the quick closing valve and the quick opening valve are designed in the same valve housing, the structure is relatively compact and the installation and construction difficulty is low. Because one action of a moving device (valve stem, valve core) can simultaneously realize the two functions of closing the main fluid passage and opening the pressure relief passage, it can prevent production accidents caused by quick closing signal interlocking failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A left side view of the structure provided for an integrated quick-response bidirectional opening valve embodiment of the present invention.

[0020] Figure 2 The embodiment of the integrated quick response two-way valve of the present invention provides an edge Figure 1 Sectional view of the fully opened state along line AA.

[0021] Figure 3 A structural front view of an integrated quick-response bidirectional opening valve embodiment of the present invention.

[0022] Figure 4 The embodiment of the integrated quick response two-way valve of the present invention provides an edge Figure 3 Cross-sectional view of the fully opened state of the center BB line.

[0023] Figure 5 A schematic diagram of the valve core open state structure provided for an integrated fast response two-way valve opening embodiment of the present invention.

[0024] Figure 6 A schematic diagram of the structure of the open state of the open solenoid valve provided in the embodiment of the integrated fast response two-way valve opening of the present invention.

[0025] Figure 7 A schematic diagram of the structure of the closed solenoid valve in the open state provided in the embodiment of the integrated fast response two-way valve opening of the present invention.

[0026] Figure 8 A schematic diagram of the valve core closed state structure provided for an integrated fast response two-way opening valve embodiment of the present invention.

[0027] Fig. 9 A schematic diagram of the closed state structure of an open solenoid valve provided in an integrated fast-response two-way opening valve embodiment of the present invention.

[0028] Fig.10 A schematic diagram of the closed state structure of a closed solenoid valve provided in an embodiment of the integrated fast-response two-way opening valve of the present invention.

[0029] Fig.11 A schematic diagram of the pressure state of the valve core when it is closed, provided in an embodiment of the integrated fast-response two-way opening valve of the present invention.

[0030] Fig.12 A schematic diagram of the pressure state when the valve core is opened provided in an embodiment of the integrated fast response two-way opening valve of the present invention.

[0031] Fig.13 A flow chart of the process fluid provided for an embodiment of the integrated fast-response two-way opening valve of the present invention.

[0032] Description of reference numerals: 1. Valve housing; 2. Cylinder; 3. Base; 4. Fluid discharge port; 5. Pressure relief fluid port; 6. Quick-closing valve seat; 7. Pressure relief valve seat; 8. Fluid goes to emergency pressure relief chamber; 9. Fluid outflow chamber; 10. Fluid inflow chamber; 11. Valve core; 12. Main valve stem; 13. Piston; 14. Main spring; 15. Spring chamber; 16. Open solenoid valve; 17. Close solenoid valve; 18. Air port 2; 19. Air port 1; 20. Air port 3; 21. Solenoid slide valve; 22. Solenoid valve spring; 23. Solenoid coil; 24. Auxiliary valve stem; 25. Sheath; 26. Air inlet 1; 27. Air inlet 2. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-13 As shown, the integrated quick-response two-way opening valve provided in the embodiment of the present invention comprises a valve housing 1, a cylinder 2 is fixedly mounted on the top of the valve housing 1 through a flange, a quick-closing valve seat 6 is fixedly arranged at the lower part of the valve housing 1, and a pressure relief valve seat 7 is fixedly arranged at the upper part of the valve housing 1, a fluid outflow cavity 9 is arranged at the lower part of the quick-closing valve seat 6, and a fluid inlet cavity 10 is arranged at one side of the quick-closing valve seat 6, and a fluid outlet cavity 9 is arranged at the upper part of the pressure relief valve seat 7. A valve core 11 is slidingly arranged inside the pressure relief chamber 8, the quick-closing valve seat 6 and the pressure relief valve seat 7, a main valve stem 12 is fixedly installed on the outer wall at the top of the valve core 11, a piston 13 is slidingly arranged inside the cylinder 2, the bottom of the piston 13 is fixedly connected to the top of the main valve stem 12, a spring chamber 15 is arranged on the top of the piston 13, and a main spring 14 is arranged inside the spring chamber 15, an opening solenoid valve 16 is arranged on one side of the cylinder 2 through a gas pipeline, and a closing solenoid valve 17 is arranged on the other side of the cylinder 2 through a gas pipeline.

[0035] The utility model comprises a valve housing 1, a cylinder 2 is fixedly installed on the top of the valve housing 1 through a flange plate, a quick-closing valve seat 6 is fixedly installed at the lower part of the valve housing 1, and a pressure relief valve seat 7 is fixedly installed at the upper part of the valve housing 1, a fluid outflow chamber 9 is arranged below the quick-closing valve seat 6, and a fluid inlet chamber 10 is arranged at one side of the quick-closing valve seat 6, a fluid emergency pressure relief chamber 8 is arranged above the pressure relief valve seat 7, a valve core 11 is slidingly arranged inside the quick-closing valve seat 6 and the pressure relief valve seat 7, a main valve stem 12 is fixedly installed on the outer wall at the top of the valve core 11, a piston 13 is slidingly arranged inside the cylinder 2, the bottom of the piston 13 is fixedly connected to the top of the main valve stem 12, a spring chamber 15 is arranged on the top of the piston 13, and a main spring 14 is arranged inside the spring chamber 15, an opening solenoid valve 16 is arranged on one side of the cylinder 2 through a gas pipeline, and a closing solenoid valve 17 is arranged on the other side of the cylinder 2 through a gas pipeline.

[0036] In an embodiment provided by the present invention, a base 3 is fixedly provided on the outer wall of the bottom of the valve housing 1 , and the base 3 is used to implement fixed installation of the valve housing 1 .

[0037] In another embodiment provided by the present invention, one end of the valve housing 1 is provided with a pressure relief fluid port 5 and a fluid discharge port 4 distributed vertically, and the pressure relief fluid port 5 and the fluid discharge port 4 are respectively connected to the fluid emergency pressure relief chamber 8 and the fluid outflow chamber 9. The fluid flows from the fluid emergency pressure relief chamber 8 to the pressure relief fluid port 5, the quick-opening valve opens, and the fluid is discharged to a safe area. The fluid flows from the fluid outflow chamber 9 to the fluid discharge port 4, the quick-closing valve opens, and the fluid flows to the downstream production requiring fluid supply.

[0038] In another embodiment provided by the present invention, a secondary valve stem 24 is fixedly mounted on the outer wall of the top of the piston 13 , a sheath 25 sleeved on the outside of the secondary valve stem 24 is provided on the top of the spring chamber 15 , and the main spring 14 is sleeved on the outside of the secondary valve stem 24 .

[0039] In an embodiment provided by the present invention, the opening solenoid valve 16 and the closing solenoid valve 17 have the same structure, and both the opening solenoid valve 16 and the closing solenoid valve 17 are normally open single-acting two-position three-way solenoid valves.

[0040] Specifically, the opening solenoid valve 16 includes a shell, an air port 2 18 is arranged above the outer wall of one side of the shell, and an air port 1 19 is arranged below the outer wall of one side of the shell, and an air port 3 20 is arranged on the outer wall of the other side of the shell, an electromagnetic slide valve 21 is slidably arranged inside the shell, an electromagnetic valve spring 22 located at the top of the electromagnetic slide valve 21 is fixedly arranged inside the top of the shell, and an electromagnetic coil 23 is arranged at the bottom of the shell.

[0041] In another embodiment provided by the present invention, an air inlet 1 26 connected to the air inlet 3 20 on the opening solenoid valve 16 is provided on the outer wall on one side of the cylinder 2, and an air inlet 27 connected to the air inlet 3 20 on the closing solenoid valve 17 is provided on the outer wall on the other side of the cylinder 2.

[0042] Specifically, when the electromagnetic coil 23 of the solenoid valve is energized, the electromagnetic slide valve 21 moves upward, and the air port 19 and the air port 3 20 are connected to the compressed air to enter the lower part of the cylinder 2 through the air inlet 1 26. At this time, the air inlet 27 of the cylinder 2 is connected in series with the air port 19 of the closed solenoid valve 17. At this time, the electromagnetic coil 23 of the closed solenoid valve 17 is energized, and the electromagnetic slide valve 21 moves upward to cut off the air port 2 18 and the air port 3 20 of the closed solenoid valve 17. Then, the compressed air can only be filled into the lower part of the cylinder 2 to push the piston upward. The compressed air path for opening the solenoid valve 16 is the air port 2 18, the air port 3 20 and the air inlet 1 26.

[0043] In another embodiment provided by the present invention, the electromagnetic coils 23 for opening the electromagnetic valve 16 and closing the electromagnetic valve 17 are de-energized at the same time; Specifically, the solenoid valve spring 22 of the opened solenoid valve 16 pushes the solenoid slide valve 21 downward, and at this time, the air port 19 and the air port 3 20 of the opened solenoid valve 16 cut off the compressed air from entering the cylinder 2, and at the same time, the air port 2 18 and the air port 3 20 are connected, and the air port 2 18 of the opened solenoid valve 16 is connected to the atmosphere.

[0044] Specifically, the solenoid valve spring 22 of the closed solenoid valve 17 pushes the solenoid slide valve 21 downward, connecting the air port 2 18 and the air port 3 20. The air port 3 20 of the closed solenoid valve 17 is connected to the atmosphere. The compressed air in the cylinder 2 is not replenished with compressed air but leaks into the atmosphere in large quantities, causing the pressure below the piston 13 to be equal to the pressure above the piston 13. In this way, the spring force of the main spring 14 is released, and the valve core 11 is pushed downward rapidly through the piston 13 and the main valve stem 12. The process fluid is cut off and cannot continue to flow to the fluid outflow chamber 9. At the same time, the pressure relief valve seat 7 is quickly separated from the valve core 11, and the process fluid flows from the fluid inlet chamber 10 to the fluid to the emergency pressure relief chamber 8.

[0045] When the valve core 11 is in the quick-closing valve seat 6, Fig.11 As shown, when the pressure relief valve seat 7 is in the fully open position and the valve core 11 is opened upward to open the quick-closing valve seat 6, it is acted upon by several forces at the moment of opening. The piston 13 is acted upon by the upward thrust F1 generated by the air pressure in the cylinder 2 and the downward elastic force F2 of the main spring 14.

[0046] F1=(P1-P0)*(S1-S2), F2=(L-L1)*K; The valve core 11 is acted upon by two forces: the downward pressure F3 generated by the pressure difference of the industrial fluid before and after the valve core 11, and the gravity G of the main valve stem 12 and valve core 11 system; F3=(P3-P5)*(S4-S2); P1: The pressure of the compressed air below the piston; P0: The pressure in the spring chamber above the piston, atmospheric pressure, can be considered as 0; P3: inlet pressure of process fluid; P5: Residual pressure in downstream production, generally much lower than process fluid pressure; S1: area of ​​piston 13; S2: cross-sectional area of ​​the main valve stem 12; S4: cross-sectional area of ​​quick-closing valve seat 6; L: free length of main spring 14; L1: length of the main spring 14 when the quick-closing valve seat 6 is closed; K: stiffness of the main spring 14; The valve stem and valve core system are subjected to an upward force F1 and three downward forces F2, F3, and G. As long as F1 is greater than the sum of F2, F3, and G, the main valve stem 12 and valve core 11 system will move upward to open the quick-closing valve seat 6. When P5 gradually increases during the upward movement, F3 gradually decreases, and the length of the main spring 14 decreases, so the elastic force of the main spring 14 increases.

[0047] Because the main function of this fast response switch valve is to quickly close the main fluid passage and quickly open the pressure relief passage, and there is no high requirement for the opening speed of the main flow channel of the process fluid, high-pressure compressed air can be slowly filled into the cylinder 2 to open and close the door quickly. In this process, as long as the pressure of the compressed air is high enough, the valve position can be controlled by controlling the on and off of the high-pressure compressed air, thereby controlling the flow or pressure of the main flow channel of the process fluid. That is, adding a proportional solenoid valve to the intake pipe can achieve the regulation function.

[0048] When the valve core 11 is in the fully open position of the pressure relief valve seat 7 and the quick closing valve seat 6, the pressure relief valve seat 7 is opened by closing downwards. At the moment of opening, the valve core 11 is acted upon by several forces, such as Fig.12 As shown: The compressed air below the piston 13 has been depressurized, so the thrust of the compressed air has been lost, and the force acting on the piston 13 is only the elastic force F2=(L-L2)*K of the spring, which is in the downward direction.

[0049] The valve core 11 is acted upon by two forces: the pressure F3 generated by the pressure difference of the industrial fluid before and after the valve core, and the gravity G of the valve stem valve core system; F3=(P5-P0)*(S4-S2); The next action at this position is to cut off the main fluid passage and open the pressure relief passage. To achieve this goal, the direction of the combined force acting on the valve stem must be downward, that is, F2+G>F3, and the combined force must make the closing time of the valve stem and valve core meet the emergency cut-off requirements.

[0050] In engineering, we want to achieve emergency cut-off of fluid source within the specified time. Then we have the known condition quick-break time △t, and we also need to know the distance of movement and the speed of movement. The following conclusions can be drawn from the analysis: moving parts: valve stem, valve core. The stroke is L1-L2. The speed of movement is determined by the mass m of the moving parts and the resultant force they are subjected to. In this process, the elastic force is basically in a linear relationship with the stroke. The size of F3 increases as the opening between the valve seat and the valve core of the pressure relief valve moves downward, and the pressure difference before and after the valve core gradually decreases. The pressure difference is the largest at the starting position. When the pressure reaches 1 / 4 of the pressure relief valve diameter, the pressure before and after the valve core is basically the same, and the value of F3 is reduced to 0. When we design this valve, the stroke is generally greater than 1 / 4 of the pressure relief valve diameter. When the stroke is greater than 1 / 4 of the pressure relief valve diameter, the pressure below the quick-closing valve seat begins to decrease, and the force of F3 begins to move downward, so that the resultant force will increase downward and accelerate the closing speed. We only need to consider that the calculation time △t* is less than the required time △t. From the boundary conditions, we can conclude that the combined force is the largest at the top (the valve core is in the pressure relief valve seat position) (because the spring force is much greater than the force generated by the fluid pressure difference, the spring force is the largest at the top of the valve position), and the acceleration value is the largest. At the bottom (the valve core is in the quick-closing valve seat position), the combined force is the smallest and the acceleration value is the smallest. If we take the acceleration at the bottom position to calculate the closing time, then the calculation result must be greater than the actual closing time. If this time is still less than the required closing time, then the spring, stroke, valve seat diameter, etc. we selected meet the design requirements.

[0051] Minimum resultant force F3 = K*(L-L1)+G; Minimum acceleration a=F3 / m=[K*(L-L1)+G] / m; △t*=[2*(L1-L2) / a]^0.5; =﹛2*(L1-L2) / [K*(L-L1)+G] / m﹜^0.5<△t; In the formula, L1, L2, and m are data determined according to the structural design, and the remaining K and L determine whether the closing time can be controlled within the required fast closing time. The iteration method or trial and error method can be used to select the appropriate spring to achieve △t*<△t.

[0052] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated quick-response two-way opening valve, comprising a valve housing (1), characterized in that: The top of the valve housing (1) is fixedly mounted with a cylinder (2) via a flange, a quick-closing valve seat (6) is fixedly arranged at the lower part of the valve housing (1), and a pressure relief valve seat (7) is fixedly arranged at the upper part of the valve housing (1), a fluid outflow chamber (9) located below the quick-closing valve seat (6) is arranged inside the valve housing (1), and a fluid inlet chamber (10) located on one side of the quick-closing valve seat (6) is arranged inside the valve housing (1), a fluid emergency pressure relief chamber (8) located above the pressure relief valve seat (7) is arranged inside the valve housing (1), and the quick-closing valve seat (6) and the pressure relief valve seat (7) are fixedly arranged at the upper part of the valve housing (1). A valve core (11) is slidably disposed inside the valve seat (7), a main valve stem (12) is fixedly mounted on the outer wall at the top of the valve core (11), a piston (13) is slidably disposed inside the cylinder (2), the bottom of the piston (13) is fixedly connected to the top of the main valve stem (12), a spring chamber (15) is disposed at the top of the piston (13), and a main spring (14) is disposed inside the spring chamber (15), an opening solenoid valve (16) is disposed on one side of the cylinder (2) through a gas pipeline, and a closing solenoid valve (17) is disposed on the other side of the cylinder (2) through a gas pipeline.

2. The integrated fast-response two-way opening valve according to claim 1, characterized in that: A base (3) is fixedly arranged on the outer wall of the bottom of the valve housing (1).

3. The integrated fast-response two-way opening valve according to claim 1, characterized in that: One end of the valve housing (1) is provided with a pressure relief fluid port (5) and a fluid discharge port (4) distributed vertically, and the pressure relief fluid port (5) and the fluid discharge port (4) are respectively connected to the fluid emergency pressure relief chamber (8) and the fluid outflow chamber (9).

4. The integrated fast-response two-way opening valve according to claim 1, characterized in that: An auxiliary valve stem (24) is fixedly mounted on the outer wall of the top of the piston (13), a sheath (25) sleeved on the outside of the auxiliary valve stem (24) is provided on the top of the spring chamber (15), and the main spring (14) is sleeved on the outside of the auxiliary valve stem (24).

5. The integrated fast-response two-way opening valve according to claim 1, characterized in that: The opening solenoid valve (16) and the closing solenoid valve (17) have the same structure. Both the opening solenoid valve (16) and the closing solenoid valve (17) are normally open single-acting two-position three-way solenoid valves.

6. The integrated fast-response two-way opening valve according to claim 5, characterized in that: The opening electromagnetic valve (16) comprises a shell, an air port 2 (18) is arranged above the outer wall of one side of the shell, an air port 1 (19) is arranged below the outer wall of one side of the shell, an air port 3 (20) is arranged on the outer wall of the other side of the shell, an electromagnetic slide valve (21) is slidably arranged inside the shell, an electromagnetic valve spring (22) located at the top of the electromagnetic slide valve (21) is fixedly arranged inside the top end of the shell, and an electromagnetic coil (23) is arranged at the bottom end of the shell.

7. The integrated fast-response two-way opening valve according to claim 6, characterized in that: An air inlet 1 (26) connected to an air inlet 3 (20) on an opening electromagnetic valve (16) is provided on an outer wall on one side of the cylinder (2), and an air inlet 2 (27) connected to an air inlet 3 (20) on a closing electromagnetic valve (17) is provided on an outer wall on the other side of the cylinder (2).

8. The integrated fast-response two-way opening valve according to claim 7, characterized in that: When the electromagnetic coil (23) of the electromagnetic valve is energized, the electromagnetic slide valve (21) moves upward, and the air port 1 (19) and the air port 3 (20) are connected to the compressed air to enter the lower part of the cylinder (2) through the air inlet 1 (26). At this time, the air inlet 2 (27) of the cylinder (2) is connected in series with the air port 1 (19) of the closed electromagnetic valve (17). At this time, the electromagnetic coil (23) of the closed electromagnetic valve (17) is energized, and the electromagnetic slide valve (21) moves upward to cut off the air port 2 (18) and the air port 3 (20) of the closed electromagnetic valve (17). Then, the compressed air can only be filled into the lower part of the cylinder (2) to push the piston upward. The compressed air path for opening the electromagnetic valve (16) is the air port 2 (18), the air port 3 (20) and the air inlet 1 (26).

9. The integrated fast-response two-way opening valve according to claim 8, characterized in that: The electromagnetic coils (23) for opening the electromagnetic valve (16) and closing the electromagnetic valve (17) are simultaneously de-energized; The electromagnetic valve spring (22) of the open electromagnetic valve (16) pushes the electromagnetic slide valve (21) downward. At this time, the air port 1 (19) and the air port 3 (20) of the open electromagnetic valve (16) cut off the compressed air from entering the cylinder (2). At the same time, the air port 2 (18) and the air port 3 (20) are connected. The air port 2 (18) of the open electromagnetic valve (16) is connected to the atmosphere.

10. The integrated fast-response two-way opening valve according to claim 9, characterized in that: The electromagnetic valve spring (22) of the closed electromagnetic valve (17) pushes the electromagnetic slide valve (21) downward, connecting the air port 2 (18) and the air port 3 (20). The air port 3 (20) of the closed electromagnetic valve (17) is connected to the atmosphere. The compressed air in the cylinder (2) is not replenished with compressed air and leaks into the atmosphere in large quantities, causing the pressure below the piston (13) to be equal to the pressure above the piston (13). In this way, the spring force of the main spring (14) is released, and the valve core (11) is pushed downward rapidly through the piston (13) and the main valve stem (12). The process fluid is cut off and cannot continue to flow into the fluid outflow chamber (9). At the same time, the pressure relief valve seat (7) is quickly separated from the valve core (11), and the process fluid flows from the fluid inlet chamber (10) to the fluid emergency pressure relief chamber (8).

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