Intelligent pressure reducing valve

Abstract

The utility model relates to the field of pressure reducing valves, in particular to an intelligent pressure reducing valve capable of adjusting a pressure reducing target value and high in adjusting accuracy, which comprises a valve body, a valve cover, a valve seat, a valve rod, a valve plate, a diaphragm, a connecting seat, a pressure adjusting valve, a first electric valve, a second electric valve, a first connecting pipe, a second connecting pipe and a control system. The valve body is provided with a water inlet, a water outlet, a mounting port and an inner cavity, the valve cover is locked at the mounting port, the diaphragm is clamped between the valve cover and the valve body and seals the mounting port, the inner cavity is divided into an adjusting cavity and a flowing cavity through the diaphragm, the valve seat is arranged in the flowing cavity, the valve rod is arranged on the valve seat in a sliding mode, and the valve rod is arranged on the valve seat in a sliding mode. The upper end of the valve rod penetrates through the mounting opening and is connected with the diaphragm through the connecting seat, the valve plate is arranged at the lower end of the valve rod, a first connecting opening is formed in the position, close to the water inlet, of the valve body, a second connecting opening is formed in the position, close to the water outlet, of the valve body, and a third connecting opening and a fourth connecting opening which are communicated with the adjusting cavity are formed in the valve cover.

Description

Technical Field

[0001] The utility model relates to the field of pressure reducing valves, in particular to an intelligent pressure reducing valve. Background Art

[0002] Patent owner: Shanghai Airlines Technology Group Co., Ltd. applied for a patent application number CN201921662002.1 on September 30, 2019. The patent name is a new type of pressure reducing valve, which specifically discloses a pipeline body, a part of which is a water inlet pipe, and the water inlet pipe is connected to the water outlet pipe at the rear end through a water hole. The water outlet is a circular through hole, and a cylindrical control piston head for controlling the water outlet flow is provided at the circular through hole. The water inlet pipe is connected to the pressure chamber of the upper automatic adjustment device through a connecting pipe, and the pressure chamber is connected to the connecting rod of the piston through a connecting head. A main spring for resetting the piston rod is provided below the connecting head of the connecting rod, and the main spring cooperates with the connecting rod through a support frame provided on the connecting rod. The lower end of the support frame is connected to a support plate through the main spring, and a first support spring and a second support spring are provided below the left and right sides of the support plate.

[0003] By setting the first supporting spring and the second supporting spring and the piston head, the existing valve is improved. When the front-end pressure changes, the size of the valve opening is nonlinearly related to the pressure change within a certain range, which will cause the rear-end pressure to change. For the rear-end equipment that requires high-precision pressure control, it may cause certain damage. Through the cooperation of the piston head with the first supporting spring and the second supporting spring, the resistance encountered by the piston head in the process of gradual opening is nonlinear and has a three-stage changing curve. In this process, the resistance encountered in the process of opening the valve can be effectively balanced, and the pressure in the nonlinear section can be balanced, so that the equivalent area of ​​the piston head opening is positively correlated with the front-end pressure, thereby ensuring the stability of the rear-end pressure to the greatest extent, improving the stability and reliability of the equipment operation, and avoiding excessive pressure fluctuations from damaging subsequent equipment.

[0004] However, when the pressure in the pipeline is regulated by an automatic regulating device, the target value of the pressure regulation is a constant value, that is, the pressure in the pipeline is kept at a certain value, which makes it difficult to achieve the target value regulation of the pressure in the pipeline, making the application range of the pressure reducing valve narrow. Utility Model Content

[0005] Therefore, in view of the above-mentioned problems, the utility model provides an intelligent pressure reducing valve which can adjust the pressure reducing target value with high adjustment accuracy.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A smart pressure reducing valve, comprising a valve body, a valve cover, a valve seat, a valve stem, a valve plate, a diaphragm, a connecting seat, a pressure regulating valve, a first electric valve, a second electric valve, a first connecting pipe, a second connecting pipe and a control system, wherein the valve body is provided with a water inlet, a water outlet, a mounting port and an inner cavity, the valve cover is locked at the mounting port, the diaphragm is clamped between the valve cover and the valve body, and the mounting port is closed, the inner cavity is divided into a regulating cavity and a flow cavity by the diaphragm, the valve seat is arranged in the flow cavity, the valve stem is slidably arranged on the valve seat, and the upper end of the valve stem passes through the mounting port and is connected to the diaphragm through the connecting seat, the valve plate is arranged at the lower end of the valve stem, the valve body is provided with a first connecting port near the water inlet, the valve body is provided with a first connecting port near the water outlet A second connecting port is provided at the port, a third connecting port and a fourth connecting port which are communicated with the regulating chamber are provided on the valve cover, the first connecting port and the third connecting port are connected through a first connecting pipe, the first electric valve is provided on the first connecting pipe, the second connecting port and the fourth connecting port are connected through a second connecting pipe, the pressure regulating valve and the second electric valve are provided on the second connecting pipe, the control system includes a power supply, a controller, a wireless connector, an alarm, a first pressure sensor provided at the first connecting port and a second pressure sensor provided at the second connecting port, the power supply, the wireless connector, the alarm, the first electric valve, the second electric valve, the first pressure sensor and the second pressure sensor are electrically connected to the controller respectively.

[0008] Furthermore, the pressure regulating valve includes a pressure regulating valve body, a pressure regulating valve seat, a pressure regulating valve stem, a pressure regulating valve plate, a pressure regulating spring and a pressure regulating rod. The pressure regulating valve body is provided with an inlet, an outlet and a pressure regulating channel. The pressure regulating valve seat is arranged in the channel. The pressure regulating valve stem can be slidably arranged on the valve seat up and down. The pressure regulating valve plate is arranged at the lower end of the pressure regulating valve stem. The pressure regulating rod is penetrated through the valve body and threadedly connected to the valve body. The pressure regulating spring is arranged between the upper end of the pressure regulating valve stem and the lower end of the pressure regulating rod.

[0009] Furthermore, a filter element is provided at the inlet of the pressure regulating valve, and the filter element is threadedly connected to the pressure regulating valve body. The filter element includes a filter shell with an annular structure, and the outer end of the filter shell is provided with a convex edge. The filter shell is embedded with a first filter screen, a second filter screen and a shock-absorbing spring. The first filter screen slides along the axial direction of the filter shell, and the second filter screen is fixed on the filter shell and away from one end of the first filter screen. The shock-absorbing spring is arranged between the first filter screen and the second filter screen.

[0010] Furthermore, the pressure regulating valve also includes a driving motor and a transmission assembly, the driving motor is rotationally connected to the regulating rod through the transmission assembly, and the driving motor is electrically connected to the controller.

[0011] Furthermore, the first connection port and the second connection port are also connected to pressure gauges respectively.

[0012] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: when the intelligent pressure reducing valve is used, the first electric valve and the second electric valve are opened in advance, so that the first connecting pipe, the second connecting pipe and the regulating chamber on the valve body are connected, and the pressure regulating valve is used to adjust the pressure in the regulating chamber, so that the pressure regulating valve and the flow valve on the upper and lower sides of the diaphragm form a pressure difference, and then the diaphragm is squeezed to drive the valve stem to slide, so that the valve plate adjusts the flow area of ​​the medium through the valve seat, and then the pressure is adjusted, so that the pressure of the regulating chamber and the flow chamber tend to be balanced, so that the target value of the valve body is adjusted to improve the scope of application, and at the same time, the pressure of the water inlet and the water outlet are detected by the first pressure sensor and the second pressure sensor respectively, and the data is transmitted to the controller, when the detected pressure value deviates from the target value or the pressure value at both ends has a large difference, the controller controls the alarm to sound an alarm, and sends data to a remote control device such as a mobile phone through a wireless connector to prompt, which is convenient for timely manual adjustment or maintenance, improves the convenience of use, and can display the pressure through a remote control device such as a mobile phone, improves the accuracy of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is a schematic cross-sectional structure diagram of a regulating valve in an embodiment of the utility model;

[0015] Figure 3 It is a schematic cross-sectional view of the filter element in the embodiment of the utility model;

[0016] Figure 4 It is a circuit module diagram of the control system in the embodiment of the utility model. DETAILED DESCRIPTION

[0017] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0018] The utility model embodiment is:

[0019] refer to Figures 1 to 4As shown, an intelligent pressure reducing valve comprises a valve body 1, a valve cover 2, a valve seat 3, a valve stem 4, a valve plate 5, a diaphragm 6, a connecting seat 7, a pressure regulating valve 8, a first electric valve 9, a second electric valve 10, a first connecting pipe 11, a second connecting pipe 12 and a control system 13. The valve body 1 is provided with a water inlet 101, a water outlet 102, a mounting port 103 and an inner cavity. The valve cover 2 is locked at the mounting port 103. The diaphragm 6 is clamped between the valve cover 2 and the valve body 1 and closes the mounting port 103. The inner cavity is divided into a regulating cavity 104 and a flow cavity 105 by the diaphragm 6. The valve seat 3 is arranged in the flow cavity 104. The valve stem 4 is slidably arranged on the valve seat 3, and the upper end of the valve stem 4 passes through the mounting port 103 and is connected to the flow cavity 105 by the connecting seat 3. The seat 7 is connected to the diaphragm 6, the valve plate 5 is arranged at the lower end of the valve stem 4, the valve body 1 is provided with a first connection port 15 near the water inlet 101, the valve body 1 is provided with a second connection port 16 near the water outlet 102, the valve cover 2 is provided with a third connection port 17 and a fourth connection port 18 connected to the regulating chamber 104, the first connection port 15 and the third connection port 17 are connected through a first connecting pipe 11, the first electric valve 9 is arranged on the first connecting pipe 11, the second connection port 16 and the fourth connection port 18 are connected through a second connecting pipe 12, the pressure regulating valve 8 and the second electric valve 10 are arranged on the second connecting pipe 12, and the first connection port 15 and the second connection port 16 are also respectively connected to a pressure gauge 19.

[0020] In addition, the pressure regulating valve 8 includes a motor 81, a transmission assembly, a pressure regulating valve body 82, a pressure regulating valve seat 83, a pressure regulating valve stem 84, a pressure regulating valve plate 85, a pressure regulating spring 86 and a pressure regulating rod 87. The pressure regulating valve body 82 is provided with an inlet 88, an outlet 89 and a pressure regulating channel 80. The pressure regulating valve seat 83 is arranged in the channel 80. The pressure regulating valve stem 84 can be slidably arranged on the valve seat 83 up and down. The pressure regulating valve plate 85 is arranged at the lower end of the pressure regulating valve stem 84. The pressure regulating rod 87 is penetrated by the valve body 82 and is threadedly connected to the valve body 82. The pressure regulating spring 86 is arranged between the upper end of the pressure regulating valve stem 84 and the lower end of the pressure regulating rod 87. The driving motor 81 is rotatably connected to the adjusting rod 87 through the transmission assembly. The transmission assembly is a worm gear transmission assembly.

[0021] The control system 13 includes a power supply 131, a controller 132, a wireless connector 133, an alarm 134, a first pressure sensor 135 provided at the first connection port 15, and a second pressure sensor 136 provided at the second connection port 16. The power supply 131, the wireless connector 133, the alarm 134, the first electric valve 9, the second electric valve 10, the first pressure sensor 135, the second pressure sensor 136 and the motor 81 are electrically connected to the controller 82, respectively.

[0022] The above-mentioned controller 82 is a PLC controller sold on the market, which can realize programmed control functions; the above-mentioned alarm 134, the first pressure sensor 135, and the second pressure sensor 136 are all devices sold on the market; the above-mentioned first electric valve 9 and the second electric valve 10 are both solenoid valves; the above-mentioned wireless connector 133 is a Bluetooth data connector or a wireless data connector that can receive and transmit data instructions, preferably a wireless data connector.

[0023] When the intelligent pressure reducing valve is used, the first electric valve 9 and the second electric valve 10 are opened in advance, so that the first connecting pipe 11, the second connecting pipe 12 and the regulating chamber 104 on the valve body 1 are connected, and the pressure in the regulating chamber 104 is adjusted by the pressure regulating valve 8, so that the pressure regulating chamber 104 and the flow chamber 105 on the upper and lower sides of the diaphragm 6 form a pressure difference, and then the diaphragm 6 is squeezed to drive the valve stem 4 to slide, so that the valve plate 5 adjusts the cross-sectional area of ​​the medium passing through the valve seat 3, and then adjusts the pressure, so that the pressure of the regulating chamber 104 and the flow chamber 105 tend to be balanced, so that the target value of the valve body 1 is adjusted to improve the pressure. The utility model has a wide application range. At the same time, the first pressure sensor 135 and the second pressure sensor 136 are respectively used to detect the pressure of the water inlet 101 and the water outlet 102, and the data are transmitted to the controller. When the detected pressure value deviates from the target value or the pressure value at both ends has a large difference, the controller 132 controls the alarm 134 to alarm, and sends data to a remote control device such as a mobile phone through a wireless connector 133, which is convenient for timely manual adjustment or maintenance, improves the convenience of use, and can display the pressure through a remote control device such as a mobile phone to improve the accuracy of adjustment.

[0024] Specifically, the working principle of the pressure regulating valve 8 is: by rotating the pressure regulating rod 87, the distance between the pressure regulating rod 87 and the pressure regulating valve stem 84 is increased, so that the compression force of the pressure regulating spring 86 is reduced, and the medium pushes the valve plate 85 to open the regulating valve 8, and continues to rotate the adjusting rod 87 to adjust the compression stroke of the pressure regulating spring 86, so that the pressure of the valve plate 85 pushed by the medium changes, and then the pressure passing through the regulating valve 8 is adjusted, so that the pressure in the pressure regulating chamber 104 changes, thereby achieving regulation.

[0025] Furthermore, a filter element 20 is provided at the inlet 88 of the pressure regulating valve 8, and the filter element 20 is threadedly connected to the pressure regulating valve body 82. The filter element 20 includes a filter shell 201 with an annular structure, and the outer end of the filter shell 201 is provided with a convex edge 202. The filter shell 201 is embedded with a first filter screen 203, a second filter screen 204 and a shock-absorbing spring 205. The first filter screen 203 slides along the axial direction of the filter shell 201, and the second filter screen 204 is fixed on the filter shell 201 and away from one end of the first filter screen 203. The shock-absorbing spring 205 is arranged between the first filter screen 203 and the second filter screen 204.

[0026] Filtration is achieved through the first filter 203 and the second filter 204 on the filter element 20 to avoid clogging of the regulating valve and improve the accuracy of regulation. The first filter 203 squeezes the shock-absorbing spring 205, so that the distance between the first filter 203 and the second filter 204 changes. When the first filter 203 intercepts more impurities, the pressure acting on the first filter 203 increases, thereby squeezing the shock-absorbing spring 205 and causing the first filter 203 to vibrate in the fluctuation of the medium flow pressure, thereby reducing the impurities attached to the first filter 203 and improving the permeability of the medium.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An intelligent pressure reducing valve, characterized in that: The utility model comprises a valve body, a valve cover, a valve seat, a valve stem, a valve plate, a diaphragm, a connecting seat, a pressure regulating valve, a first electric valve, a second electric valve, a first connecting pipe, a second connecting pipe and a control system. The valve body is provided with a water inlet, a water outlet, a mounting port and an inner cavity. The valve cover is locked at the mounting port. The diaphragm is clamped between the valve cover and the valve body and closes the mounting port. The inner cavity is divided into a regulating cavity and a flow cavity by the diaphragm. The valve seat is arranged in the flow cavity. The valve stem is slidably arranged on the valve seat, and the upper end of the valve stem passes through the mounting port and is connected to the diaphragm through the connecting seat. The valve plate is arranged at the lower end of the valve stem. The valve body is provided with a first connecting port near the water inlet, and the valve body is provided with a The second connection port, the valve cover is provided with a third connection port and a fourth connection port which are communicated with the regulating chamber, the first connection port and the third connection port are connected by a first connection pipe, the first electric valve is arranged on the first connection pipe, the second connection port and the fourth connection port are connected by a second connection pipe, the pressure regulating valve and the second electric valve are arranged on the second connection pipe, the control system includes a power supply, a controller, a wireless connector, an alarm, a first pressure sensor arranged at the first connection port and a second pressure sensor arranged at the second connection port, the power supply, the wireless connector, the alarm, the first electric valve, the second electric valve, the first pressure sensor and the second pressure sensor are electrically connected to the controller respectively.

2. The intelligent pressure reducing valve according to claim 1, characterized in that: The pressure regulating valve includes a pressure regulating valve body, a pressure regulating valve seat, a pressure regulating valve stem, a pressure regulating valve plate, a pressure regulating spring and a pressure regulating rod. The pressure regulating valve body is provided with an inlet, an outlet and a pressure regulating flow channel. The pressure regulating valve seat is arranged in the flow channel. The pressure regulating valve stem can be slidably arranged on the valve seat up and down. The pressure regulating valve plate is arranged at the lower end of the pressure regulating valve stem. The pressure regulating rod is penetrated through the valve body and is threadedly connected to the valve body. The pressure regulating spring is arranged between the upper end of the pressure regulating valve stem and the lower end of the pressure regulating rod.

3. The intelligent pressure reducing valve according to claim 2, characterized in that: A filter is provided at the inlet of the pressure regulating valve, and the filter is threadedly connected to the pressure regulating valve body. The filter includes a filter housing with an annular structure, and a convex edge is provided at the outer end of the filter housing. A first filter screen, a second filter screen and a shock-absorbing spring are embedded in the filter housing. The first filter screen slides along the axial direction of the filter housing, and the second filter screen is fixed on the filter housing and is away from one end of the first filter screen. The shock-absorbing spring is arranged between the first filter screen and the second filter screen.

4. The intelligent pressure reducing valve according to claim 2 or 3, characterized in that: The pressure regulating valve also includes a driving motor and a transmission assembly. The driving motor is rotationally connected to the regulating rod through the transmission assembly, and the driving motor is electrically connected to the controller.

5. The intelligent pressure reducing valve according to claim 1, characterized in that: The first connection port and the second connection port are also connected to pressure gauges respectively.

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