Energy-saving control valve

Abstract

An energy-saving type control valve comprises a main valve and an electric pilot valve, the electric pilot valve is communicated with the main valve through a plurality of control pipelines and controls on-off of the main valve, the electric pilot valve is communicated with an in-situ control box through a signal line, the in-situ control box controls switching of the electric pilot valve, and the electric pilot valve and the in-situ control box are communicated with an energy storage module through power lines respectively. The energy storage module is communicated with the solar cell module; the main valve comprises a main valve body, the main valve body and a middle end cover define a flow channel, the middle end cover and an upper end cover define a control cavity, a piston is installed between the middle end cover and the upper end cover, and the piston divides the control cavity into an upper cavity and a lower cavity; the main valve is provided with a first valve hole, a second valve hole and a third valve hole, the first valve hole is formed in the upper end cover and communicated with the upper cavity of the main valve control cavity, the second valve hole is formed in the middle end cover and communicated with the lower cavity of the main valve control cavity, and the third valve hole is formed in the main valve body and communicated with the water inlet side of the flow channel; the main valve is controlled through the electric pilot valve by means of the pressure of the pipeline, and energy and cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to an energy-saving control valve. Background Art

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters of the conveying medium. Their functions are divided into shut-off valves, check valves, regulating valves, etc. Valves can be used to control the flow of various types of fluids such as air, water, and steam. Among them, shut-off valves are divided into ball valves, gate valves, butterfly valves, or eccentric semi-ball valves according to their structures. Their main function is to complete the on-off control of fluid transportation.

[0003] In addition, the shut-off valve can also be connected to an electric operating structure to open or close the valve or maintain a certain opening by manual, local electric / hydraulic control or remote control. The valve with an electric operating mechanism usually uses an electric motor to drive a turbine reducer to amplify the torque, thereby controlling the valve core to change the flow area and thus control the fluid flow or pressure.

[0004] Valves with electric actuators need to be connected to a power supply to provide operating power, which limits some usage scenarios. For example, in the fields of agricultural irrigation, mine water supply, and long-distance water distribution, there are two ways to control the on and off of pipeline valves: manual operation and on-site electric / hydraulic operation, and they can be connected to a remote control system. Manual operation is generally performed by a disc or torque handle, and the movement of the valve core is controlled by manpower. The disc-shaped operation also needs to be combined with a turbine reduction mechanism to achieve torque amplification. Especially for large-diameter valves, manual operation is time-consuming and labor-intensive. Electric operation generally consists of an electric motor and a reducer. The control of the valve core movement is achieved through electricity, which requires the introduction of a 220-volt or 380-volt AC power supply, which limits the use conditions of the valve. In addition, valves that are frequently switched on and off also consume a certain amount of electricity.

[0005] In addition, the pipeline fluid itself carries a certain pressure, and laying a large number of valves requires the construction of a longer power supply line. Therefore, using solar cells to power the valves or provide operating power can replace external power supplies.

[0006] For example, CN102235536B discloses a photovoltaic solar electric valve, including a photovoltaic solar power supply module, a program control module, a pilot valve mechanism, a main valve and a special function mechanism; the pilot valve mechanism includes a pressure relief hole, a large piston, a pilot valve core assembly, a large piston, a valve body, and a main valve outlet. The pilot valve structure of a small valve opening a large valve solves the problem of using a low-voltage, low-power motor to open a large-caliber valve and realizing solar cell-driven valves, thereby realizing remote unmanned management and automatic control of valves without power supply; however, the device sets the pilot valve inside the main valve, which has a complex structure, is inconvenient to operate and overhaul, and the pipeline pressure directly impacts the pilot valve, which is easy to damage the pilot valve and make it ineffective. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide an energy-saving control valve to solve the problems of the existing pipeline electric valves having many power supply lines, high power consumption and easy damage of the pilot valve. The pilot valve is controlled externally and the pipeline main valve is controlled locally or remotely by utilizing the pipeline's own pressure.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: an energy-saving control valve, including a main valve and an electric pilot valve, the electric pilot valve is connected to the main valve through a number of control pipelines and controls the on and off of the main valve, the electric pilot valve is connected to the local control box through a signal line, the local control box controls the switching of the electric pilot valve, the electric pilot valve and the local control box are respectively connected to an energy storage module through a power line, power is provided by the energy storage module, the energy storage module is connected to a solar cell module, and electrical energy is provided by the solar cell module.

[0009] In the preferred embodiment, the main valve includes a main valve body, the main valve body and the middle end cover together form a flow channel, the middle end cover and the upper end cover together form a control chamber, a piston is installed between the middle end cover and the upper end cover, and the piston divides the control chamber into an upper control chamber and a lower control chamber.

[0010] In a preferred embodiment, the main valve also includes a main valve shaft installed on the middle end cover, the lower end of the main valve shaft is connected and fixed to the valve disc, and the upper end is connected and fixed to the piston. The valve disc is installed inside the main valve body to separate the lower cavity of the control cavity from the flow channel.

[0011] In a preferred solution, the piston is configured as a soft diaphragm.

[0012] In a preferred embodiment, the main valve is provided with a first valve hole, a second valve hole and a third valve hole. The first valve hole is arranged on the upper end cover and is connected to the upper cavity of the main valve control cavity. The second valve hole is arranged on the middle end cover and is connected to the lower cavity of the main valve control cavity. The third valve hole is arranged on the main valve body and is connected to the water inlet side of the main valve flow channel.

[0013] In a preferred embodiment, the electric pilot valve is provided with a first opening, a second opening, a third opening and a fourth opening. The first opening is connected to the first valve hole of the main valve through a first control pipeline, the second opening is connected to the external atmosphere, the third opening is connected to the second valve hole of the main valve through a second control pipeline, and the fourth opening is connected to the third valve hole of the main valve through a third control pipeline.

[0014] In a preferred embodiment, the electric pilot valve includes a pilot valve core, the bottom of which is fixed on a base, an electric motor is detachably mounted on the other end of the base, an operating handle is provided on the motor, a pilot valve housing is mounted on the top cover of the pilot valve core, and a left end cover is fixed to the top of the pilot valve housing by bolts.

[0015] In a preferred solution, the first opening, the second opening, the third opening and the fourth opening are all formed on the pilot valve housing and communicate with corresponding holes on the pilot valve core.

[0016] In a preferred solution, the motor is connected to an on-site control box via a signal line and connected to an energy storage module via a power line.

[0017] The utility model provides an energy-saving control valve, which has the following beneficial effects:

[0018] 1. The utility model uses solar energy for power supply, and controls the switch or opening of the valve on-site or remotely, thereby eliminating the construction and installation costs of high-voltage power cables and the line operation and maintenance costs;

[0019] 2. The utility model adopts the pressure of the pipeline itself as the operating power and uses an electric pilot valve as the control method. Compared with the electric operating device, it saves manufacturing cost and energy cost;

[0020] 3. The utility model adopts the setting of external electric pilot valve, which further ensures the safety of the electric pilot valve, thereby improving the reliability and stability of the system operation;

[0021] 4. The utility model adopts an electric pilot valve as the control valve of the main valve, which is conducive to the local or remote control of the main valve, and is safe and reliable;

[0022] 5. The setting of the energy storage module of the utility model enables the energy accumulated by the solar cell to be effectively stored for emergency use, thereby improving the mobility and emergency response of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation examples:

[0024] Figure 1 This is a schematic diagram of the working state of Embodiment 1 of the utility model;

[0025] Figure 2This is a schematic diagram of the working state of Embodiment 2 of the present utility model;

[0026] Figure 3 This is a schematic diagram of the working state of Embodiment 3 of the present utility model;

[0027] Figure 4 This is a structural schematic diagram of the electric pilot valve of the utility model;

[0028] In the figure: main valve body 1, upper end cover 2, middle end cover 3, main valve shaft 4, piston 5, valve disc 6, first valve hole 7, second valve hole 8, third valve hole 9, electric pilot valve 10, ground control box 11, energy storage module 12, solar cell module 13, first opening 14, second opening 15, third opening 16, fourth opening 17, first control pipeline 18, second control pipeline 19, third control pipeline 20, bolt 21, left end cover 22, pilot valve housing 23, pilot valve core 24, base 25, motor 26, operating handle 27. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0030] Example 1

[0031] See also Figure 1 and Figure 4 As shown, an energy-saving control valve includes a main valve and an electric pilot valve 10. The electric pilot valve 10 is connected to the main valve through a plurality of control pipelines and controls the on-off of the main valve. The electric pilot valve 10 is connected to an on-site control box 11 through a signal line. The on-site control box 11 controls the switching of the electric pilot valve 10. The electric pilot valve 10 and the on-site control box 11 are respectively connected to an energy storage module 12 through power lines. Power is provided by the energy storage module 12. The energy storage module 12 is connected to a solar cell module 13. Electric energy is provided by the solar cell module 13.

[0032] In this embodiment, the main valve includes a main valve body 1, the main valve body 1 and the middle end cover 3 together form a flow channel, the middle end cover 3 and the upper end cover 2 together form a control chamber, and a piston 5 is installed between the middle end cover 3 and the upper end cover 2, and the piston 5 divides the control chamber into an upper control chamber and a lower control chamber.

[0033] Furthermore, the main valve also includes a main valve shaft 4 installed on the middle end cover 3, the lower end of the main valve shaft 4 is connected and fixed to the valve disc 6, and the upper end is connected and fixed to the piston 5. The valve disc 6 is installed inside the main valve body 1 to separate the lower cavity of the control cavity from the flow channel.

[0034] Furthermore, the piston 5 is configured as a soft diaphragm.

[0035] Furthermore, the main valve is provided with a first valve hole 7, a second valve hole 8 and a third valve hole 9. The first valve hole 7 is arranged on the upper end cover 2 and is connected to the upper cavity of the main valve control cavity. The second valve hole 8 is arranged on the middle end cover 3 and is connected to the lower cavity of the main valve control cavity. The third valve hole 9 is arranged on the main valve body 1 and is connected to the water inlet side of the main valve flow channel.

[0036] Furthermore, the electric pilot valve 10 is provided with a first opening 14, a second opening 15, a third opening 16 and a fourth opening 17. The first opening 14 is connected to the first valve hole 7 of the main valve through a first control line 18, the second opening 15 is connected to the external atmosphere, the third opening 16 is connected to the second valve hole 8 of the main valve through a second control line 19, and the fourth opening 17 is connected to the third valve hole 9 of the main valve through a third control line 20.

[0037] Furthermore, the electric pilot valve 10 includes a pilot valve core 24, the bottom of the pilot valve core 24 is fixed on a base 25, and a motor 26 is detachably mounted on the other end of the base 25. An operating handle 27 is provided on the motor 26. The top cover of the pilot valve core 24 is equipped with a pilot valve housing 23, and the top of the pilot valve housing 23 is connected and fixed with a left end cover 22 by bolts 21.

[0038] Furthermore, the first opening 14 , the second opening 15 , the third opening 16 and the fourth opening 17 are all formed on the pilot valve housing 23 and communicate with corresponding holes on the pilot valve core 24 .

[0039] Furthermore, the motor 26 is connected to the local control box 11 via a signal line, and is connected to the energy storage module 12 via a power line.

[0040] When used: Figure 1 As shown, when the motor 26 drives the pilot valve core 24 to a specific position, the first valve hole 7 of the main valve is connected to the third valve hole 9 of the main valve through the first control pipeline 18 and the electric pilot valve core 24; the second valve hole 8 of the main valve is connected to the atmosphere through the second control pipeline 19 and the electric pilot valve core 24; under the action of the pressure on the water inlet side of the main valve, the piston 5 and the valve disc 6 are subjected to downward pressure, driving the main valve shaft 4 to move downward until the main valve is fully closed.

[0041] Example 2

[0042] In another preferred embodiment, based on the above embodiment 1, refer to the attached Figure 2 When the motor 26 drives the pilot valve core 24 to a specific position, the first valve hole 7 and the second valve hole 8 of the main valve are not connected to the outside world; the piston 5, the main valve shaft 4 and the main valve disc 6 are in a stationary state, and the working state of the main valve does not change regardless of whether the main valve is fully open, fully closed or in any opening degree.

[0043] Example 3

[0044] In another preferred embodiment, based on the above embodiment 1, refer to the attached Figure 3 When the motor 26 drives the pilot valve core 24 to a specific position, the first valve hole 7 of the main valve, the first control pipeline 18, and the electric pilot valve core 24 are connected to the atmosphere; the second valve hole 8 of the main valve is connected to the third valve hole 9 of the main valve through the second control pipeline 19 and the electric pilot valve core 24; under the action of the pressure on the water inlet side of the main valve, the piston 5 and the valve disc 6 are subjected to upward pressure, driving the main valve shaft 4 to move upward until the main valve is fully opened.

[0045] Example 4

[0046] In another preferred embodiment, based on the above embodiments 1, 2, and 3, the energy storage module 12 provides an uninterruptible power supply to the local control box 11, and the local control box 11 drives the motor 26 to rotate clockwise or counterclockwise. The main principles of each part are:

[0047] The energy storage module 12 uses a battery, and the battery is externally connected to a solar cell module 13, a small wind turbine, etc. to provide electric energy, and the energy storage module 12, i.e., the battery, is charged after voltage and current stabilization; the local control box 11 controls the electric pilot valve 10 or the motor 26; the phase or position state of the motor 24 or the pilot valve core 24 is fed back to the local control box 11.

[0048] The on-site control box 11 provides personnel with on-site operation functions. Through the three gears of "open", "close" and "lock", it outputs positive and reverse currents to control the motor 26 of the electric pilot valve 10 to rotate clockwise, counterclockwise or not in action, thereby controlling the valve to be fully open, fully closed or at any opening degree as required.

[0049] Example 5

[0050] In another preferred embodiment, based on the above-mentioned embodiment 4, when the battery of the energy storage module 12 fails or the voltage is insufficient, a manual method can be adopted to labor-savingly complete the opening, closing or opening control of the valve. The specific method is to use the operating handle 27 installed on the shaft of the motor 26 to complete the working state switching of the electric pilot valve 10.

[0051] In the preferred embodiment, the main valve includes a main valve body 1, the main valve body 1 and the middle end cover 3 together form a flow channel, the middle end cover 3 and the upper end cover 2 together form a control chamber, a piston 5 is installed between the middle end cover 3 and the upper end cover 2, and the piston 5 divides the control chamber into an upper control chamber and a lower control chamber; the above arrangement enables the function of the main valve to be realized while having a simple and compact structure and easy operation.

[0052] In the preferred scheme, the main valve also includes a main valve shaft 4 installed on the middle end cover 3, the lower end of the main valve shaft 4 is connected and fixed to the valve disc 6, and the upper end is connected and fixed to the piston 5, and the valve disc 6 is installed inside the main valve body 1 to separate the lower cavity of the control cavity from the flow channel; the above arrangement makes the functions and working modes of the main valve more abundant, and the valve has high working sensitivity, good reliability and strong stability.

[0053] In a preferred solution, the piston 5 is configured as a soft diaphragm; this configuration improves the sensitivity of the main valve while enhancing its buffering performance and reducing the noise when the valve is operating.

[0054] In the preferred scheme, the main valve is provided with a first valve hole 7, a second valve hole 8 and a third valve hole 9. The first valve hole 7 is arranged on the upper end cover 2 and is connected to the upper cavity of the main valve control cavity. The second valve hole 8 is arranged on the middle end cover 3 and is connected to the lower cavity of the main valve control cavity. The third valve hole 9 is arranged on the main valve body 1 and is connected to the water inlet side of the main valve flow channel. The above arrangement provides a channel for the main valve to communicate with the outside world, while effectively utilizing the pressure of the pipeline itself, reducing the investment in cables and the amount of engineering construction, thereby reducing engineering costs and energy consumption, and being green, low-carbon and environmentally friendly.

[0055] In the preferred embodiment, the electric pilot valve 10 is provided with a first opening 14, a second opening 15, a third opening 16 and a fourth opening 17. The first opening 14 is connected to the first valve hole 7 of the main valve through a first control pipeline 18, the second opening 15 is connected to the external atmosphere, the third opening 16 is connected to the second valve hole 8 of the main valve through a second control pipeline 19, and the fourth opening 17 is connected to the third valve hole 9 of the main valve through a third control pipeline 20. The above arrangement enables the main valve and the electric pilot valve 10 to be connected, which provides a guarantee for the subsequent electric pilot valve 10 to control the main valve through the control pipeline.

[0056] In a preferred embodiment, the electric pilot valve 10 includes a pilot valve core 24, the bottom of the pilot valve core 24 is fixed on a base 25, and a motor 26 is detachably mounted on the other end of the base 25. An operating handle 27 is provided on the motor 26, and a pilot valve housing 23 is mounted on the top of the pilot valve core 24. A left end cover 22 is fixed to the top of the pilot valve housing 23 via bolts 21. The above arrangement enables the functions of the electric pilot valve 10 to be realized, and the arrangement of the pilot valve housing 23 and the left end cover 22 further protects the pilot valve core 24, thereby further improving the life and safety of the system.

[0057] In the preferred solution, the first opening 14, the second opening 15, the third opening 16 and the fourth opening 17 are all formed on the pilot valve housing 23 and communicate with the corresponding holes on the pilot valve core 24; in the above arrangement, the cylindrical pilot valve core 24 is axially symmetrical in the circumferential direction and is respectively communicated with the atmosphere, the main valve control upper chamber, the main valve control lower chamber and the main valve water inlet side, so that the electric pilot valve controls the opening, closing or opening adjustment of the hydraulically controlled main valve through three states: clockwise rotation, counterclockwise rotation and power failure, which effectively utilizes the pipeline's own pressure, reduces the investment in cables and the amount of engineering construction, thereby reducing engineering costs and energy consumption, and is green, low-carbon and environmentally friendly.

[0058] In the preferred solution, the motor 26 is connected to the local control box 11 through a signal line and to the energy storage module 12 through a power line; the above arrangement ensures that the operation of the motor 26 is guaranteed by power and signals, thereby further improving the reliability and stability of the system operation.

[0059] In summary, the utility model provides an energy-saving control valve, which uses solar energy for power supply, and controls the switch or opening adjustment of the valve on-site or remotely, thereby eliminating the construction and installation costs of high-voltage power cables and the line operation and maintenance costs; the pressure of the pipeline itself is used as the operating power, and an electric pilot valve is used as the control method, which saves manufacturing costs and energy usage costs compared to electric operating devices; the external setting of the electric pilot valve further ensures the safety of the electric pilot valve, thereby improving the reliability and stability of the system; the electric pilot valve is used as the control valve of the main valve, which is conducive to realizing on-site or remote control of the main valve, and is safe and reliable; an energy storage module is set up, so that the energy accumulated by the solar cell can be effectively stored for emergency use, thereby improving the mobility and emergency response of the system; the utility model has exquisite design, simple structure, easy operation, low energy consumption, low engineering investment, low maintenance cost, green and low-carbon environmental protection, and has high practical application value, good economic and social benefits.

Claims

1. An energy-saving control valve, characterized in that: The electric pilot valve (10) comprises a main valve and an electric pilot valve (10), wherein the electric pilot valve (10) is connected to the main valve via a plurality of control pipelines and controls the on-off state of the main valve, the electric pilot valve (10) is connected to a local control box (11) via a signal line, the local control box (11) controls the switching of the electric pilot valve (10), the electric pilot valve (10) and the local control box (11) are respectively connected to an energy storage module (12) via power lines, power is provided by the energy storage module (12), the energy storage module (12) is connected to a solar cell module (13), and electric energy is provided by the solar cell module (13).

2. An energy-saving control valve according to claim 1, characterized in that: The main valve comprises a main valve body (1), the main valve body (1) and a middle end cover (3) together form a flow channel, the middle end cover (3) and an upper end cover (2) together form a control chamber, a piston (5) is installed between the middle end cover (3) and the upper end cover (2), and the piston (5) divides the control chamber into an upper control chamber and a lower control chamber.

3. An energy-saving control valve according to claim 2, characterized in that: The main valve further comprises a main valve shaft (4) mounted on the middle end cover (3); the lower end of the main valve shaft (4) is connected and fixed to a valve flap (6), and the upper end is connected and fixed to a piston (5); the valve flap (6) is mounted inside the main valve body (1) to separate the lower chamber of the control chamber from the flow channel.

4. An energy-saving control valve according to claim 3, characterized in that: The piston (5) is configured as a soft diaphragm.

5. An energy-saving control valve according to claim 3, characterized in that: The main valve is provided with a first valve hole (7), a second valve hole (8) and a third valve hole (9); the first valve hole (7) is provided on the upper end cover (2) and is communicated with the upper chamber of the main valve control chamber; the second valve hole (8) is provided on the middle end cover (3) and is communicated with the lower chamber of the main valve control chamber; the third valve hole (9) is provided on the main valve body (1) and is communicated with the water inlet side of the main valve flow channel.

6. An energy-saving control valve according to claim 5, characterized in that: The electric pilot valve (10) is provided with a first opening (14), a second opening (15), a third opening (16) and a fourth opening (17); the first opening (14) is connected to the first valve hole (7) of the main valve via a first control pipeline (18); the second opening (15) is connected to the external atmosphere; the third opening (16) is connected to the second valve hole (8) of the main valve via a second control pipeline (19); and the fourth opening (17) is connected to the third valve hole (9) of the main valve via a third control pipeline (20).

7. An energy-saving control valve according to claim 6, characterized in that: The electric pilot valve (10) comprises a pilot valve core (24), the bottom of the pilot valve core (24) is fixed on a base (25), the other end of the base (25) is detachably mounted with a motor (26), the motor (26) is provided with an operating handle (27), the top of the pilot valve core (24) is covered with a pilot valve housing (23), and the top of the pilot valve housing (23) is connected and fixed with a left end cover (22) via bolts (21).

8. An energy-saving control valve according to claim 7, characterized in that: The first opening (14), the second opening (15), the third opening (16) and the fourth opening (17) are all formed on the pilot valve housing (23) and communicate with corresponding holes on the pilot valve core (24).

9. An energy-saving control valve according to claim 7, characterized in that: The motor (26) is connected to the local control box (11) via a signal line, and is connected to the energy storage module (12) via a power line.

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