CN211475052U - Novel hydraulic drive pressure-regulating flow-regulating valve - Google Patents
Novel hydraulic drive pressure-regulating flow-regulating valve Download PDFInfo
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Abstract
The utility model discloses a novel hydraulic drive pressure-regulating flow-regulating valve, which comprises a valve body, a flow deflector, a piston and a piston cylinder; a valve seat is arranged in the valve body, and divides the inner cavity of the valve body into an inlet cavity and an outlet cavity; the flow guide body is fixed in the inner cavity of the valve body through the flow guide sheet, the interior of the flow guide body is a piston cavity with an outlet facing the valve seat, and the valve body and the flow guide body are provided with through holes for connecting the piston cavity with an external pipeline; the piston is arranged on the inner side wall of the piston cavity in a sliding mode, and the sliding stroke is between the piston cavity and the valve seat; the piston cylinder is fixedly connected with the piston so as to move along the axial direction along with the piston, and the side surface of the piston cylinder is provided with a flow guide hole which can be communicated with the inlet cavity and the outlet cavity. The hydraulic valve can be driven to open, close and adjust by controlling the pressure of the piston cavity only, various pressure control modes of the piston cavity such as an electromagnetic valve, a mechanical pilot valve, a manual ball valve and the like can be adopted, a high-pressure electric driving device is not needed, early-stage installation and later-stage maintenance are facilitated, and the cost is low.
Description
Technical Field
The utility model relates to a pressure control valve, concretely relates to novel water drive pressure regulating flow regulating valve.
Background
The flow regulating pressure regulating valve is also called a piston valve, has good flow and pressure regulating performance due to the unique structural characteristics of an annular channel, a balanced valve core and the like, avoids the problems of poor regulating performance of a butterfly valve, a gate valve and the like and cavitation, noise and the like caused by the poor regulating performance, obtains high recognition of users, and is widely applied to working conditions of large-scale water diversion and regulation projects, municipal pipe network flow, pressure control and the like at home and abroad. The valve is installed in the pipe network, there are many places remote, and the current flow regulating pressure regulating valve is driven by external force, for example, in chinese patents 201610256810.2 and 201420239851.7, the opening and closing parts are driven by crank link mechanism, the axial movement of the front and back realizes the opening and closing of the valve, the crank is driven by the valve shaft driven by external force, and the conventional power is electric device. This brings great obstacles and troubles to the early application and the later operation and maintenance of the product.
In the application of pipe networks, in order to reduce leakage and hidden danger of pipe explosion, the installation of a pressure control valve in a main pipe network is a common mode at present. The installation of an electric flow regulating and pressure regulating valve on a large-diameter pipe network for supplying water by supplying pressure in different stages at different time intervals is the current main development direction, but the contradictions of high purchasing cost and difficulty in providing a high-voltage power supply in installation and application always exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a can dispose novel water drive pressure regulating flow control valve of mechanical guide valve self-running or the operation of light current solenoid valve control.
The utility model discloses the technical scheme who adopts does:
a novel hydraulic drive pressure-regulating flow-regulating valve comprises a valve body, a flow guide body, a piston and a piston cylinder; a valve seat is arranged in the valve body, and divides an inner cavity of the valve body into an inlet cavity and an outlet cavity by the valve seat; the flow guide body is fixed in the inner cavity of the valve body through a flow guide sheet, the inner part of the flow guide body is a piston cavity with an outlet facing the valve seat, and the valve body and the flow guide body are provided with through holes for connecting the piston cavity with an external pipeline; the piston is arranged on the inner side wall of the piston cavity in a sliding mode, and the sliding stroke is between the piston cavity and the valve seat; the piston cylinder is fixedly connected with the piston so as to move along the axial direction along with the piston, and the side surface of the piston cylinder is provided with a flow guide hole which can be communicated with the inlet cavity and the outlet cavity.
Furthermore, the novel hydraulic drive pressure-regulating flow-regulating valve also comprises an external pipeline and a control system; the external pipeline comprises an inlet end control pipeline and an outlet end control pipeline, the inlet end control pipeline is connected between the inlet cavity and the piston cavity to control the communication and the cut-off of the inlet cavity and the piston cavity, and the outlet end control pipeline is connected between the outlet cavity and the piston cavity to control the communication and the cut-off of the outlet cavity and the piston cavity; the control system comprises a PLC module, and a power management module, a first pressure sensor and a displacement sensor which are electrically connected with the PLC module, wherein the first pressure sensor is arranged at the downstream of the outlet cavity and used for detecting a water pressure value at the outlet side and feeding back the water pressure value to the PLC module, and the displacement sensor is arranged in the valve body and used for detecting a position signal of the piston and feeding back the position signal to the PLC module; and the control system is used for outputting control signals to the inlet end control pipeline and the outlet end control pipeline according to the water pressure value and the position signal.
Furthermore, the inlet end control pipeline comprises an inlet end distribution pipe and an inlet end high-frequency electromagnetic valve, one end of the inlet end distribution pipe is communicated with the inlet cavity, the other end of the inlet end distribution pipe is communicated with the control cavity, the inlet end high-frequency electromagnetic valve is installed on the inlet end distribution pipe, and the control end of the inlet end high-frequency electromagnetic valve is electrically connected with the PLC module.
Further, the inlet end control pipeline further comprises an inlet end service valve and an inlet end adjusting needle valve which are sequentially arranged on the inlet end piping.
Furthermore, the outlet end control pipeline comprises an outlet end distribution pipe and an outlet end high-frequency electromagnetic valve, one end of the outlet end distribution pipe is communicated with the outlet cavity, the other end of the outlet end distribution pipe is communicated with the control cavity, the outlet end high-frequency electromagnetic valve is installed on the outlet end distribution pipe, and the control end of the outlet end high-frequency electromagnetic valve is electrically connected with the PLC module.
Furthermore, the outlet end control pipeline further comprises an outlet end maintenance valve and an outlet end adjusting needle valve which are sequentially arranged on the outlet end piping.
Further, the control system further comprises a wireless communication module connected with the PLC module, and the wireless communication module is connected with an antenna for wireless communication with an upper computer.
The flow guide body is provided with an end cover assembly, the piston is connected with an identification rod, the end cover assembly is provided with a groove for containing the axial movement of the identification rod, and the displacement sensor is positioned in the groove and used for indirectly detecting the position signal of the piston through the identification rod.
The utility model discloses specific embodiment's beneficial effect:
the novel hydraulic drive pressure regulating and flow adjusting valve of the technical scheme only needs to control the pressure of the piston cavity, can rely on opening and closing and adjusting of the hydraulic drive valve, can adopt pressure modes of various control piston cavities such as an electromagnetic valve, a mechanical pilot valve and a manual ball valve, does not need to adopt a high-pressure electric driving device any more, is convenient for early installation and later maintenance, has low cost, can also flexibly select a configuration mode of a control end according to actual installation and application conditions and control precision requirements, and realizes automatic control.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic operation diagram of the first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention
FIG. 4 is a structural view of a third embodiment of the present invention;
fig. 5 is a valve full-closed state diagram of the novel hydraulic drive pressure-regulating flow-regulating valve of the embodiment of the invention;
fig. 6 is a valve full-open state diagram of the novel hydraulic drive pressure-regulating flow-regulating valve of the embodiment of the invention;
fig. 7 is a valve adjusting state diagram of the novel hydraulic driving pressure-regulating flow-regulating valve of the embodiment of the utility model.
Detailed Description
As shown in fig. 1 and fig. 2, a novel hydraulically-driven pressure-regulating and flow-regulating valve according to a first embodiment of the present invention includes a valve body 110, a flow guide body 120 (also called an inner valve body), a piston 130, and a piston cylinder 140; a valve seat 150 is arranged in the valve body 110, and the valve seat 150 divides the inner cavity of the valve body 110 into an inlet cavity 102 and an outlet cavity 103; the guide body 120 is fixed in the inner cavity of the valve body 110 through a guide vane 124, and the interior of the guide body is a piston cavity 121 with an outlet facing the valve seat 150, and the valve body 110 and the guide body 120 are provided with a through hole 122 connecting the piston cavity 121 with an external pipeline; the piston 130 is slidably mounted on the inner side wall of the piston cavity 121 and has a sliding stroke between the piston cavity 121 and the valve seat 150; the piston cylinder 140 is fixedly connected with the piston 130 to move along the axial direction along with the piston 130, and the side surface of the piston cylinder 140 is provided with a flow guide hole which can communicate the inlet cavity 102 and the outlet cavity 103.
In this embodiment, the valve body 110 may be composed of a front main valve body and a rear auxiliary valve body, or may adopt an integrated valve body structure; the outer diameter D1 of the piston 130 is greater than the outer diameter D2 of the piston cylinder 140 and the engagement surfaces form an annular area A1, the sleeve outer diameter D2 forms a circular area A2, and the outer diameter D1 of the piston 130 forms a circular area A3. The pressure in the upstream inlet chamber 102 is P1, and decreases to P2 after passing through the piston cylinder 140, and the piston chamber 121 is connected with the upstream, downstream or outside of the valve through an external pipeline, and the pressure P3 is formed through an external control.
When P3 × A3 is greater than P1 × a1+ P2 × a2, the piston 130 and the piston cylinder 140 move rightward until closed (the piston 130 abuts against the valve seat 150);
when the P3 × A3 is smaller than P1 × A1+ P2 × A2, the piston 130 and the piston cylinder 140 move leftwards until the piston cylinder is fully opened;
when P3 × A3 is equal to P1 × a1+ P2 × a2, the piston 130 and the piston cylinder 140 are in a balanced left-right adjustment state.
As described above, the novel hydraulic drive pressure-regulating flow-regulating valve of the technical scheme only needs to control the pressure of the piston cavity, can rely on hydraulic drive to open and close and regulate the valve, can adopt various pressure control modes of the piston cavity such as an electromagnetic valve, a mechanical pilot valve, a manual ball valve and the like, does not need to adopt a high-pressure electric driving device any more, is convenient for early installation and later maintenance, and has lower cost.
As shown in fig. 3, in order to provide a novel hydraulically-driven pressure-regulating and flow-regulating valve according to a second embodiment of the present invention, an external pipeline and a control system are added on the basis of the first embodiment; the external pipelines comprise an inlet end control pipeline 210 and an outlet end control pipeline 220, the inlet end control pipeline 210 is connected between the inlet cavity 102 and the piston cavity 121 to control the communication and the cut-off of the inlet cavity and the piston cavity, and the outlet end control pipeline 220 is connected between the outlet cavity 103 and the piston cavity 121 to control the communication and the cut-off of the outlet cavity and the piston cavity; the control system comprises a PLC module 310, and a power management module 320, a first pressure sensor 340 and a displacement sensor 330 which are electrically connected with the PLC module 310, wherein the first pressure sensor 340 is installed at the downstream of the outlet cavity 103 for detecting the water pressure value at the outlet side and feeding back the water pressure value to the PLC module 310, and the displacement sensor 330 is installed in the valve body 110 for detecting the position signal of the piston 130 and feeding back the position signal to the PLC module 310; the control system 300 is configured to output control signals to the inlet control circuit 210 and the outlet control circuit 220 according to the water pressure value and the position signal.
As a specific implementation of the inlet end control circuit 210 and the outlet end control circuit 220 in the present embodiment:
the inlet end control pipeline 210 includes an inlet end piping 211, and an inlet end high frequency electromagnetic valve 212, wherein one end of the inlet end piping 211 communicates with the inlet chamber 102, the other end communicates with the piston chamber 121, the inlet end high frequency electromagnetic valve 212 is mounted on the inlet end piping 211, and the control end is electrically connected to the PLC module 310.
The outlet end control pipeline 220 includes an outlet end pipe 221 and an outlet end high frequency electromagnetic valve 222, wherein one end of the outlet end pipe 221 is communicated with the outlet cavity 103, the other end of the outlet end pipe 221 is communicated with the piston cavity 121, the outlet end high frequency electromagnetic valve 222 is installed on the outlet end pipe 221, and a control end of the outlet end high frequency electromagnetic valve is electrically connected with the PLC module 310.
In a further modification of the above solution, the inlet end control pipeline 210 further includes an inlet end service valve 213 and an inlet end adjusting needle valve 214, which are sequentially disposed on the inlet end piping 211. The outlet-side control line 220 further includes an outlet-side service valve 223 and an outlet-side adjustment needle valve 224 which are provided in this order on the outlet-side piping 221. The maintenance valve can be convenient for maintenance, and the flow of two groups of pipelines can be adjusted by the needle valve.
In a further improvement of the above scheme, the flow guiding body 120 is provided with an end cover assembly 123, the piston 130 is connected with the identification rod 131, the end cover assembly 123 is provided with a groove for accommodating axial movement of the identification rod 131, and the displacement sensor 330 is located in the groove and is used for indirectly detecting a position signal of the piston 130 through the identification rod 131.
The control system of the present embodiment further includes a wireless communication module 350 connected to the PLC module 310, and the wireless communication module 350 is connected to an antenna 360 for wireless communication with the upper computer.
As shown in fig. 4, in order to compare the third embodiment with the second embodiment, the control system of the present embodiment further includes a second pressure sensor 370 connected to the PLC module 310, and the second pressure sensor 370 is installed at the upstream of the snout cavity 102 for detecting the water pressure value at the snout side and feeding back to the PLC module 310.
when the inlet side water pressure value detected by the second pressure sensor 370 and the outlet side water pressure value detected by the first pressure sensor 340 both feed back pressure to the PLC module 310, the pressure difference △ P before and after the valve can be obtained, and the flow rate can be determined according to the pressure difference △ P before and after the valve
The displacement sensor 330 is used for detecting the valve position to obtain the Kv value of the corresponding opening degree of the valve, namely, the flow of the medium passing through the valve can be calculated and displayed, and the flow control and meter capable of adjusting and controlling and metering the flow is formedMetering valve ".
The fully closing, fully opening and adjusting processes of the novel hydraulic driving pressure-regulating and flow-regulating valve are described in three steps.
As shown in fig. 5, when the PLC module 310 detects that the outlet-side water pressure value is greater than the system set value through the first pressure sensor 340, the PLC module 310 sends a control signal to open the inlet-side high-frequency solenoid valve 212 and close the outlet-side high-frequency solenoid valve 222, that is, the inlet-side control pipeline 210 is open and the outlet-side control pipeline 220 is closed, water flows from the inlet chamber 102 through the inlet pipe 211, the inlet service valve 213, the inlet control needle 214, and the inlet-side high-frequency solenoid valve 212 into the piston chamber 121 to pressurize the piston chamber 121, thereby pushing the piston 130 and the piston cylinder 140 to move toward the valve seat, the displacement sensor 330 feeds back a position signal of the piston 130 to the PLC module 310, the PLC module 310 continuously detects the outlet-side water pressure value and the system set value, and checks the position signal of the piston 130 until the piston 130 (moving to the right, intercepting the passage from the inlet chamber 102 to the outlet chamber 103.
As shown in fig. 6, when the PLC module 310 detects that the outlet-side water pressure value is lower than the system set value through the first pressure sensor 340, the PLC module 310 sends a control signal to open the outlet-side high-frequency solenoid valve 222 and close the inlet-side high-frequency solenoid valve 212, that is, the outlet-side control pipeline 220 is connected and the inlet-side control pipeline 210 is disconnected, the piston cavity 121 and the outlet cavity 103 are connected, because the pressure in the inlet cavity 102 is higher than the pressure in the outlet cavity 103, the piston 130 is driven by the pressure of the inlet-side medium and the pressure of the downstream medium to move in a direction away from the valve seat 140 (move to the left), so that the medium in the piston cavity 121 flows into the outlet cavity 103 through the outlet-side high-frequency solenoid valve 222, the outlet-side adjustment needle valve 224 and the outlet-side service valve 223, the piston cavity 121 loses pressure, the displacement sensor, and the position signal of the piston 130 is checked until the piston 130 fully enters the piston chamber to full open, achieving the maximum opening between the inlet chamber 102 and the outlet chamber 103.
As shown in fig. 7, the PLC module 310 dynamically analyzes the water pressure at the outlet side and a system setting value through the first pressure sensor 340, respectively controls the opening and closing of the inlet-end high-frequency solenoid valve 212 and the outlet-end high-frequency solenoid valve 222, and checks a valve position signal through the displacement sensor 330, so that the piston 130 dynamically adjusts the opening according to the pressure requirement, and the outlet-side pressure is always in accordance with the setting requirement.
The technical scheme also comprises a control method for applying the novel hydraulic drive pressure-regulating flow-regulating valve, which comprises the following steps:
detecting a water pressure value at the mouth side;
if the outlet side water pressure value is larger than the set value of the system, pressurizing the piston cavity through an external pipeline and a through hole to drive the piston to move towards the valve seat so as to reduce the opening of the valve until the outlet side water pressure value is equal to the set value of the system;
and if the outlet side water pressure value is smaller than the set value of the system, reducing the pressure of the piston cavity through an external pipeline and a through hole so as to drive the piston to move away from the valve seat and further reduce and increase the opening of the valve until the outlet side water pressure value is equal to the set value of the system.
In some embodiments of the technical scheme, the piston cavity is pressurized by connecting an inlet cavity through an external pipeline and a through hole, and the external pipeline is provided with an electromagnetic valve, a mechanical pilot valve or a manual ball valve for controlling the on-off; the piston cavity is decompressed and is connected with the outlet cavity or the external atmosphere through an external pipeline and a through hole, and the external pipeline is provided with an electromagnetic valve, a mechanical pilot valve or a manual ball valve for controlling the on-off.
The hydraulic drive type flow regulating and pressure regulating valve has the advantages that the valve port diameter range can be from DN200 to DN3000, the reliable operation of the main valve can be driven through the weak current control of the electromagnetic valve, the valve is free from the limitation of a high-voltage power supply by combining power supply solutions such as wind and light, the application range is wider, and the installation and operation cost is lower.
In addition, the hydraulic drive type flow regulating and pressure regulating valve has the functions of self learning and self regulation, can regulate the pressure in all the time periods by taking the day as a unit, taking the month as a unit and taking the year as a unit, ensures that the pressure in the pipe network in each time period, each month and each season is just met without redundant intelligent control, and has higher intelligence and longer service life compared with a mechanical pilot valve form.
The above embodiments are for explanation of the present invention, however, the present invention is not limited to the details of the above embodiments, and various equivalent substitutions or simple modifications performed by those skilled in the art within the technical concept of the present invention should all belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel water drive pressure regulating flow regulating valve which characterized in that: the valve comprises a valve body (110), a guide body (120), a piston (130) and a piston cylinder (140);
a valve seat (150) is arranged in the valve body (110), and the valve seat (150) divides an inner cavity of the valve body (110) into an inlet cavity (102) and an outlet cavity (103);
the flow guide body (120) is fixed in an inner cavity of the valve body (110) through a flow guide sheet (124), a piston cavity (121) with an outlet facing the valve seat (150) is formed in the flow guide body (120), and the valve body (110) and the flow guide body (120) are provided with through holes (122) for connecting the piston cavity (121) with an external pipeline;
the piston (130) is slidably mounted on the inner side wall of the piston cavity (121) and has a sliding stroke between the piston cavity (121) and the valve seat (150);
the piston cylinder (140) is fixedly connected with the piston (130) to move along the axial direction along with the piston (130), and the side surface of the piston cylinder (140) is provided with a flow guide hole which can be communicated with the inlet cavity (102) and the outlet cavity (103).
2. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 1, wherein: the system also comprises an external pipeline and a control system;
the external pipeline comprises an inlet end control pipeline (210) and an outlet end control pipeline (220), the inlet end control pipeline (210) is connected between the inlet cavity (102) and the piston cavity (121) to control the communication and the cut-off of the inlet cavity and the piston cavity, and the outlet end control pipeline (220) is connected between the outlet cavity (103) and the piston cavity (121) to control the communication and the cut-off of the outlet cavity and the piston cavity;
the control system comprises a PLC module (310), and a power management module (320), a first pressure sensor (340) and a displacement sensor (330) which are electrically connected with the PLC module (310), wherein the first pressure sensor (340) is installed at the downstream of the outlet cavity (103) and used for detecting the water pressure value at the outlet side and feeding back the water pressure value to the PLC module (310), and the displacement sensor (330) is installed in the valve body (110) and used for detecting the position signal of the piston (130) and feeding back the position signal to the PLC module (310); the control system (300) is used for outputting control signals to the inlet end control pipeline (210) and the outlet end control pipeline (220) according to the water pressure value and the position signal.
3. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 2, wherein: the inlet end control pipeline (210) comprises an inlet end piping (211) and an inlet end high-frequency electromagnetic valve (212), one end of the inlet end piping (211) is communicated with the inlet cavity (102), the other end of the inlet end piping is communicated with the piston cavity (121), the inlet end high-frequency electromagnetic valve (212) is installed on the inlet end piping (211), and the control end of the inlet end high-frequency electromagnetic valve is electrically connected with the PLC module (310).
4. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 3, wherein: the inlet end control pipeline (210) further comprises an inlet end service valve (213) and an inlet end adjusting needle valve (214) which are sequentially arranged on the inlet end piping (211).
5. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 2, wherein: the outlet end control pipeline (220) comprises an outlet end piping (221) and an outlet end high-frequency electromagnetic valve (222), one end of the outlet end piping (221) is communicated with the outlet cavity (103), the other end of the outlet end piping is communicated with the piston cavity (121), the outlet end high-frequency electromagnetic valve (222) is installed on the outlet end piping (221), and a control end of the outlet end high-frequency electromagnetic valve is electrically connected with the PLC module (310).
6. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 5, wherein: the outlet end control pipeline (220) further comprises an outlet end overhauling valve (223) and an outlet end adjusting needle valve (224) which are sequentially arranged on the outlet end piping (221).
7. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 2, wherein: the control system further comprises a wireless communication module (350) connected with the PLC module (310), and the wireless communication module (350) is connected with an antenna (360) for wireless communication with an upper computer.
8. The novel hydraulically driven pressure-regulating flow-regulating valve as claimed in claim 2, wherein: the flow guide body (120) is provided with an end cover assembly (123), the piston (130) is connected with an identification rod (131), a groove for containing the axial movement of the identification rod (131) is formed in the end cover assembly (123), and the displacement sensor (330) is located in the groove and used for indirectly detecting a position signal of the piston (130) through the identification rod (131).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922420473.8U CN211475052U (en) | 2019-12-27 | 2019-12-27 | Novel hydraulic drive pressure-regulating flow-regulating valve |
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| CN201922420473.8U CN211475052U (en) | 2019-12-27 | 2019-12-27 | Novel hydraulic drive pressure-regulating flow-regulating valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966457A (en) * | 2019-12-27 | 2020-04-07 | 浙江班尼戈流体控制有限公司 | Novel hydraulic drive pressure-regulating flow-regulating valve and control method thereof |
| CN113154112A (en) * | 2021-04-27 | 2021-07-23 | 博纳斯威阀门股份有限公司 | Hydraulic self-generating intelligent regulating valve |
-
2019
- 2019-12-27 CN CN201922420473.8U patent/CN211475052U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966457A (en) * | 2019-12-27 | 2020-04-07 | 浙江班尼戈流体控制有限公司 | Novel hydraulic drive pressure-regulating flow-regulating valve and control method thereof |
| CN110966457B (en) * | 2019-12-27 | 2024-07-30 | 浙江班尼戈流体控制有限公司 | Hydraulic drive pressure and flow regulating valve and control method thereof |
| CN113154112A (en) * | 2021-04-27 | 2021-07-23 | 博纳斯威阀门股份有限公司 | Hydraulic self-generating intelligent regulating valve |
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