Novel reliable energy regulating valve

Abstract

The utility model relates to the technical field of refrigeration energy regulation, in particular to a novel reliable energy regulating valve which comprises a valve body, a diaphragm capsule, a pressure opening assembly, a pressure closing assembly and a valve element, a piston cavity is arranged in the valve body, the valve element is installed in the piston cavity in a sliding mode, and a valve inlet and a valve outlet are formed in the two sides of the valve body. The valve inlet and the valve outlet are both communicated with the piston cavity, the valve inlet is higher than the valve outlet, the diaphragm capsule is installed at the top end of the valve body, the top end of the valve element penetrates through the valve body and extends into the diaphragm capsule, the piston cavity and the valve element are arranged in the valve body in a sliding mode, and the design that the valve inlet is higher than the valve outlet is beneficial for promoting fluid flowing and optimizing fluid dynamic performance. The diaphragm capsule and the opening pressure assembly are ingeniously combined, so that the opening pressure of the valve element is effectively controlled, the response speed and stability of the valve are improved, and the closing pressure assembly achieves accurate adjustment of the closing pressure of the valve element through a preset tower-shaped compression spring and a closing valve port pressure adjusting nut.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration energy regulation, in particular to a novel and reliable energy regulating valve. Background Art

[0002] In refrigeration and air conditioning systems, the PTV18W capacity control valve (hereinafter referred to as the "high-flow capacity control valve") is widely recognized as an economical and efficient method for controlling compressor cooling capacity. By regulating fluid flow and pressure, this valve enables precise control of cooling capacity to meet cooling requirements under varying operating conditions. However, despite its excellent performance in applications, high-flow capacity control valves still have some limitations and challenges.

[0003] On the one hand, the relatively complex structural design of large-flow energy regulating valves means that their stability and reliability under certain operating conditions need to be improved. In particular, valve performance may be affected or even malfunction in environments with high pressure, temperature, or humidity.

[0004] On the other hand, as modern industry's requirements for energy efficiency and environmental protection continue to increase, large-flow energy control valves are facing greater challenges in terms of energy conservation and environmental protection. Traditional valve designs often find it difficult to maximize energy efficiency and minimize environmental pollution while ensuring performance.

[0005] In addition, large-volume energy regulating valves also have certain difficulties in maintenance and upkeep. Due to their complex structure, valve repair and replacement of parts require high technical level and cost, which brings inconvenience to users in use and maintenance. Utility Model Content

[0006] (1) Technical problems solved

[0007] In view of the deficiencies in the prior art, the utility model provides a novel and reliable energy regulating valve.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model provides a new and reliable energy regulating valve, comprising a valve body, a diaphragm box, an opening pressure assembly, a closing pressure assembly and a valve core, a piston chamber is provided in the valve body, the valve core is slidably installed in the piston chamber, a valve inlet and a valve outlet are provided on both sides of the valve body, the valve inlet and the valve outlet are both connected with the piston chamber, and the valve inlet is higher than the valve outlet, the diaphragm box is installed at the top end of the valve body, the top end of the valve core penetrates the valve body and extends into the diaphragm box, the opening pressure assembly is installed on the diaphragm box, a diaphragm is provided in the diaphragm box, the opening pressure assembly comprises a setting adjustment seat, a setting compression spring and an opening pressure setting adjustment nut, the top of the diaphragm is provided with an upper push block, the setting adjustment seat is installed on the diaphragm box, and the bottom of the setting compression spring is slidably installed in the inner cavity of the setting adjustment seat. The setting adjustment nut is installed in the inner cavity of the setting adjustment seat through a threaded structure, and the bottom of the setting adjustment nut is in contact with the setting compression spring. The valve core includes a valve stem, a valve piston and a valve core plate. The valve core plate is located at the bottom of the valve stem. The top of the valve stem is provided with a rod driving end. The valve piston is located in the middle of the valve stem and below the valve piston. The closing pressure assembly includes a preset tower-shaped compression spring and a closing valve port pressure adjusting nut. The preset tower-shaped compression spring is installed on the closing valve port pressure adjusting nut. The top of the preset tower-shaped compression spring is connected to the bottom end of the valve stem. The closing valve port pressure adjusting nut is installed at the bottom of the piston cavity through a threaded structure. An inner guide hole is provided inside the valve stem. The two ends of the inner guide hole pass through the bottom of the valve stem and the valve piston respectively. An air guide hole is provided on the side wall of the valve body. The air guide hole is connected to the membrane box and the valve exhaust port.

[0010] Preferably, the piston cavity includes an upper piston cavity, a lower piston cavity and a valve cavity, the upper piston cavity is located above the valve piston, the lower piston cavity is located at the lower end of the valve core plate, and the valve cavity is located at the valve stem.

[0011] Again preferably, the membrane box includes an upper membrane cavity and a lower membrane cavity, the upper membrane cavity, the lower membrane cavity and the membrane sheet are located inside the membrane box, the upper membrane cavity is located above the membrane sheet, the lower membrane cavity is located below the membrane sheet, and the air guide hole is connected to the lower membrane cavity.

[0012] Preferably, a sealing cap is installed at the bottom of the valve body, and a polytetrafluoroethylene sealing gasket is provided on the inner side of the sealing cap.

[0013] Further preferably, an O-type sealing ring is provided around the outer wall of the valve piston, and the O-type sealing ring is located at the upper end and the lower end of the valve piston.

[0014] Again preferably, a spring groove is provided at the bottom of the opening pressure setting adjustment nut, and the setting compression spring is inserted into the spring groove.

[0015] Preferably, a valve plate sealing ring is provided at the top of the valve core plate, a blocking area is provided inside the piston cavity, the blocking area is located between the valve inlet and the valve outlet, and the valve plate sealing ring is fitted with the bottom of the blocking area.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a new and reliable energy regulating valve with the following beneficial effects:

[0018] The energy regulating valve of the utility model realizes precise control of fluid flow, pressure and temperature through its unique design, thereby improving the efficiency of the fluid.

[0019] The piston chamber and sliding valve core in the valve body, as well as the design of the valve inlet being higher than the valve outlet, help promote fluid flow and optimize fluid dynamics performance.

[0020] The ingenious combination of the diaphragm box and the opening pressure component enables the opening pressure of the valve core to be effectively controlled, thereby enhancing the response speed and stability of the valve.

[0021] The closing pressure assembly achieves precise adjustment of the valve core closing pressure through the preset tower-shaped compression spring and the closing valve port pressure adjusting nut, thereby improving the sealing and reliability of the valve.

[0022] The design of the air guide hole ensures that the pressure in the sub-membrane cavity is consistent with the pressure at the valve outlet, further improving the control accuracy of the valve.

[0023] The segmented design of the piston chamber and the layered design of the diaphragm box optimize the internal structure of the valve, making the valve more stable during operation and easier to maintain and service.

[0024] The optimization of the sealing structure, including the design of the sealing cap, O-ring and valve plate sealing ring, greatly improves the sealing performance of the valve and extends the service life of the valve.

[0025] In summary, the energy regulating valve of the present invention has the advantages of precise control, stability and reliability, good sealing performance and long service life, and is suitable for various occasions requiring precise control of fluid flow, pressure and temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the cross-sectional structure of the valve body of the utility model;

[0027] Figure 2 This is a schematic diagram of the valve core structure of the utility model;

[0028] In the figure: 1. Valve body; 2. Valve core; 3. Diaphragm box; 4. Setting adjustment seat; 5. Setting pressure spring; 6. Opening pressure setting adjustment nut; 7. Diaphragm; 8. Push-up block; 9. Valve closing pressure adjustment nut; 10. Preset tower-shaped pressure spring; 11. Piston upper end cavity; 12. Piston lower end cavity; 13. Valve cavity; 14. Valve stem; 15. Valve core plate; 16. Valve piston; 17. Rod driving end; 18. Inner guide hole; 19. Diaphragm upper cavity; 20. Diaphragm lower cavity; 21. Air guide hole; 22. O-ring; 23. Sealing cap; 24. PTFE sealing gasket; 25. Valve plate sealing ring; 26. Blocking area; 27. Valve inlet; 28. Valve outlet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-2 The present invention provides a novel and reliable energy regulating valve, primarily comprising a valve body 1, a diaphragm 3, an opening pressure assembly, a closing pressure assembly, and a valve core 2. The valve body 1 includes a piston chamber within which the valve core 2 is slidably mounted. Fluid communication is achieved through a valve inlet 27 and a valve outlet 28, with the valve inlet 27 being higher than the valve outlet 28 to facilitate fluid flow. The diaphragm 3 is mounted at the top of the valve body 1 and connected to the top of the valve core 2. The opening pressure of the valve core 2 is controlled by a diaphragm 7 and the opening pressure assembly. The closing pressure assembly controls the closing pressure of the valve core 2 via a pre-set conical compression spring 10 and a valve port pressure adjustment nut 9.

[0031] How it works

[0032] Valve body 1 structure:

[0033] Valve body 1: A piston cavity is provided in the valve body 1, and a valve core 2 is slidably installed in the piston cavity.

[0034] Valve inlet 27 and valve outlet 28: A valve inlet 27 and a valve outlet 28 are provided on both sides of the valve body 1 , both of which are communicated with the piston cavity, and the valve inlet 27 is higher than the valve outlet 28 .

[0035] Membrane box 3 structure:

[0036] Diaphragm box 3: installed at the top of the valve body 1, with a diaphragm 7 inside, and also includes an upper membrane cavity 19 and a lower membrane cavity 20. The upper membrane cavity 19 is located above the diaphragm 7, and the lower membrane cavity 20 is located below the diaphragm 7.

[0037] Air guide hole 21 : An air guide hole 21 is provided on the side wall of the valve body 1 , and the air guide hole 21 is connected with the sub-membrane cavity 20 and the valve outlet 28 , ensuring that the pressure in the sub-membrane cavity 20 is consistent with the pressure in the valve outlet 28 .

[0038] Opening pressure assembly:

[0039] Opening pressure assembly: installed on the diaphragm box 3, including the setting adjustment seat 4, the setting pressure spring 5 and the opening pressure setting adjustment nut 6.

[0040] Diaphragm 7: A push-up block 8 is provided on the top of the diaphragm 7.

[0041] Setting adjustment seat 4: installed on the membrane box 3.

[0042] Setting compression spring 5: The bottom is slidably installed in the inner cavity of the setting adjustment seat 4.

[0043] Opening pressure setting adjustment nut 6: installed in the inner cavity of the setting adjustment seat 4 through a threaded structure, and the bottom is in contact with the setting pressure spring 5.

[0044] Shut off pressure components:

[0045] Closing pressure assembly: includes a preset conical compression spring 10 and a closing valve port pressure regulating nut 9.

[0046] Preset tower-shaped compression spring 10: installed on the closed valve port pressure regulating nut 9, with the top end connected to the bottom end of the valve stem 14.

[0047] Close the valve port pressure regulating nut 9: installed at the bottom of the piston chamber through a threaded structure.

[0048] Valve core 2 structure:

[0049] The valve core 2 includes a valve stem 14 , a valve piston 16 and a valve core plate 15 .

[0050] The valve stem 14 has a rod driving end 17 at the top and an inner guide hole 18 inside the valve stem 14 . Both ends of the inner guide hole 18 pass through the bottom of the valve stem 14 and the valve piston 16 respectively.

[0051] Valve piston 16: located in the middle of the valve stem 14, with a valve core plate 15 provided below.

[0052] Valve core plate 15: located at the bottom of the valve stem 14, with a valve plate sealing ring 25 provided on the top.

[0053] Piston chamber structure:

[0054] Piston chamber: includes the piston upper end chamber 11, the piston lower end chamber 12 and the valve chamber 13.

[0055] The piston upper end cavity 11 is located above the valve piston 16.

[0056] The piston lower end cavity 12 is located at the lower end of the valve core 2 plate.

[0057] Valve chamber 13: located at the valve stem 14.

[0058] Sealing structure:

[0059] Sealing cap 23: installed at the bottom of the valve body 1, with a PTFE sealing gasket 24 on the inside.

[0060] O-ring 22 is disposed around the outer wall of the valve piston 16 and is located at the upper and lower ends of the valve piston 16 .

[0061] The valve plate sealing ring 25 is arranged at the top of the valve core plate 15 and fits with the bottom of the blocking area 26 in the piston cavity.

[0062] Working principles of each preferred technical solution

[0063] The air guide hole 21 is connected to the submembrane cavity 20:

[0064] Air guide hole 21: The air guide hole 21 on the side wall of the valve body 1 is connected to the sub-membrane cavity 20 and the valve outlet 28, ensuring that the pressure in the sub-membrane cavity 20 is consistent with the pressure in the valve outlet 28, thereby affecting the deformation of the diaphragm 7.

[0065] Segmented design of piston chamber:

[0066] The piston upper end cavity 11 is located above the valve piston 16 and is used to accommodate the push-up block 8 of the diaphragm 7 and the setting compression spring 5.

[0067] The piston lower end cavity 12 is located at the lower end of the valve core plate 14 and is used to accommodate the valve core plate 15 and the valve plate sealing ring 25.

[0068] Valve chamber 13: located at the valve stem 14, used to guide the sliding of the valve core 2.

[0069] Layered design of membrane box 3:

[0070] The upper membrane cavity 19 is located above the diaphragm 7 and is used to accommodate the setting adjustment seat 4 and the setting compression spring 5.

[0071] Sub-membrane cavity 20: located below the diaphragm 7, connected to the valve outlet 28 through the air guide hole 21 to ensure pressure transmission.

[0072] Optimization of sealing structure:

[0073] Sealing cap 23: installed at the bottom of the valve body 1, with a PTFE sealing gasket 24 on the inside to ensure the sealing of the bottom of the valve body 1.

[0074] O-ring 22 is disposed around the outer wall of the valve piston 16 and located at the upper and lower ends of the valve piston 16 to ensure the sealing of the valve piston 16 during the sliding process.

[0075] Valve plate sealing ring 25: It is set at the top of the valve core 2 plate and fits with the bottom of the blocking area 26 in the piston cavity to ensure the sealing of the valve port.

[0076] Adjustment of the opening pressure component:

[0077] Setting adjustment seat 4: installed on the membrane box 3, used to fix the setting compression spring 5.

[0078] Setting compression spring 5: The bottom is slidably installed in the inner cavity of the setting adjustment seat 4, and the pressure is adjusted at the top by opening the pressure setting adjustment nut 6.

[0079] Opening pressure setting adjustment nut 6: It is installed in the inner cavity of the setting adjustment seat 4 through a threaded structure, and the bottom is in contact with the setting pressure spring 5. The preload force of the setting pressure spring 5 is adjusted by rotating the adjusting nut.

[0080] To close the pressure gauge:

[0081] Preset conical compression spring 10: installed on the closed valve port pressure regulating nut 9, with the top end connected to the bottom end of the valve stem 14, providing a pre-tightening force when the valve core 2 is closed.

[0082] Close the valve port pressure regulating nut 9: It is installed at the bottom of the piston chamber through a threaded structure, and the preload force of the preset conical compression spring 10 is adjusted by rotating the regulating nut.

[0083] Comprehensive working principle

[0084] When valve core 2 is closed:

[0085] The medium enters the valve cavity 13: the high-pressure gas enters the valve cavity 13 through the valve inlet 27 and enters the sub-diaphragm cavity 20 through the air guide hole 21, so that the diaphragm 7 is subjected to upward pressure.

[0086] The diaphragm 7 pushes the valve core 2: the upward push block 8 of the diaphragm 7 pushes the set compression spring 5 to move upward, and the preset tower-shaped compression spring 10 pushes the valve core 2 to move upward, so that the valve core 2 plate is tightly attached to the bottom of the blocking area 26, closing the valve outlet 28.

[0087] Force balance: At this time, the forces applied in all directions in the valve cavity 13 composed of the upper end surface of the valve core 2 plate, the lower end surface of the valve piston 16 and the valve body 1 are equal. The medium pressure at the valve outlet 28 acts on the lower end of the valve core plate 15 and enters the upper end cavity 11 of the piston through the internal guide hole 18, so that the forces acting on the upper and lower ends of the valve core 2 are equal, and the resultant force of the medium acting on the valve core 2 is "0".

[0088] Closing condition: the pre-tightening force (fixed) Ft of the preset tower-shaped compression spring 10 + FS↑ (the medium pressure P↑ at the valve outlet 28 end × the area S of the diaphragm 7) > the opening setting compression spring 5Fk (externally adjustable), the valve plate sealing ring 25 is tightly attached to the blocking area 26, and the valve outlet 28 is closed.

[0089] When valve core 2 is open:

[0090] Medium pressure decreases: When the medium pressure P↓ at the valve outlet 28 decreases, the upward pressure on the diaphragm 7 decreases.

[0091] The valve core plate 15 leaves the valve outlet 28: the preset preload force (fixed) Ft+FS↓(medium pressure P↓ at the valve outlet 28 end×area S of the diaphragm 7) of the tower-shaped compression spring 10 is less than the opening setting compression spring 5Fk (externally adjustable), the valve core plate 15 gradually leaves the blocking area 26, and the valve outlet 28 is opened.

[0092] Stable position: until Ft+FS=Fk, the valve core 2 stops stably at this position, and the required medium flow is obtained at the valve outlet 28.

[0093] Force balance: During this process, the areas and pressures of the reaction force surfaces of the valve core 2 are relative, and the resultant force of the reaction forces in all directions is "0" (or close to "0"). Changes in the medium pressure have no effect on the valve core 2, achieving the effect of having no effect or little effect on the flow (position) of the valve outlet 28.

[0094] Through the above structure and working principle, the new and reliable energy regulating valve of the utility model can operate correctly, stably and for a long time in a large-flux system, ensuring efficient, energy-saving and stable operation of the refrigeration and air-conditioning system.

[0095] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new and reliable energy regulating valve, characterized in that: The invention comprises a valve body (1), a membrane box (3), an opening pressure component, a closing pressure component and a valve core (2), wherein a piston cavity is provided in the valve body (1), and the valve core (2) is slidably installed in the piston cavity. A valve inlet (27) and a valve outlet (28) are provided on both sides of the valve body (1), and the valve inlet (27) and the valve outlet (28) are both connected to the piston cavity, and the valve inlet (27) is higher than the valve outlet (28). The membrane box (3) is installed at the top end of the valve body (1), and the top end of the valve core (2) penetrates the valve body (1) and extends into the membrane box (3). The opening pressure assembly is installed on the membrane box (3), a diaphragm (7) is provided in the membrane box (3), the opening pressure assembly includes a setting adjustment seat (4), a setting pressure spring (5) and an opening pressure setting adjustment nut (6), a top of the diaphragm (7) is provided with an upward push block (8), the setting adjustment seat (4) is installed on the membrane box (3), the bottom of the setting pressure spring (5) is slidably installed in the inner cavity of the setting adjustment seat (4), and the setting adjustment nut is installed in the inner cavity of the setting adjustment seat (4) through a threaded structure. The bottom of the setting adjustment nut is in contact with the setting pressure spring (5), the valve core (2) includes a valve stem (14), a valve piston (16) and a valve core plate (15), the valve core plate (15) is located at the bottom of the valve stem (14), the top of the valve stem (14) is provided with a rod driving end (17), the valve piston (16) is located in the middle of the valve stem (14) and below the valve piston (16), the closing pressure assembly includes a preset tower-shaped pressure spring (10) and a closing valve port pressure adjustment nut (9), the preset tower-shaped pressure spring (10) Installed on the closing valve port pressure regulating nut (9), the top end of the preset tower-shaped compression spring (10) is connected to the bottom end of the valve stem (14), and the closing valve port pressure regulating nut (9) is installed on the bottom of the piston cavity through a threaded structure. The interior of the valve stem (14) is provided with an internal guide hole (18), and the two ends of the internal guide hole (18) respectively pass through the bottom of the valve stem (14) and the valve piston (16), and an air guide hole (21) is provided on the side wall of the valve body (1), and the air guide hole (21) is connected with the membrane box (3) and the valve outlet (28).

2. A new and reliable energy regulating valve according to claim 1, characterized in that: The piston chamber includes an upper piston chamber (11), a lower piston chamber (12) and a valve chamber (13), wherein the upper piston chamber (11) is located above the valve core (2) piston, the lower piston chamber (12) is located at the lower end of the valve core (2) plate, and the valve chamber (13) is located at the valve stem (14).

3. A new and reliable energy regulating valve according to claim 2, characterized in that: The membrane box (3) includes an upper membrane cavity (19) and a lower membrane cavity (20), wherein the upper membrane cavity (19), the lower membrane cavity (20) and the membrane sheet (7) are located inside the membrane box (3), and the upper membrane cavity (19) is located above the membrane sheet (7), and the lower membrane cavity (20) is located below the membrane sheet (7), and the air guide hole (21) is connected to the lower membrane cavity (20).

4. A new and reliable energy regulating valve according to claim 3, characterized in that: A sealing cap (23) is installed at the bottom of the valve body (1), and a polytetrafluoroethylene sealing gasket (24) is provided on the inner side of the sealing cap (23).

5. A new and reliable energy regulating valve according to claim 4, characterized in that: An O-type sealing ring (22) is provided around the outer wall of the valve piston (16), and the O-type sealing ring (22) is located at the upper end and the lower end of the valve piston (16).

6. A new and reliable energy regulating valve according to claim 5, characterized in that: The bottom of the opening pressure setting adjustment nut (6) is provided with a spring groove, and the setting compression spring (5) is inserted into the spring groove.

7. A new and reliable energy regulating valve according to claim 6, characterized in that: A valve plate sealing ring (25) is provided at the top of the valve core plate (15), and a blocking area (26) is provided inside the piston cavity. The blocking area (26) is located between the valve inlet (27) and the valve outlet (28), and the valve plate sealing ring (25) is in contact with the bottom of the blocking area (26).

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