Quick opening and closing valve

Abstract

The invention relates to the field of power generation. A quick opening and closing valve comprises a fluid valve, the fluid valve is provided with a valve body and a valve element, and a driving motor is in linkage with the valve element through an electric control clutch. The driving motor is communicated with the electric control clutch and is always in a standby state with rated high rotating speed, when the fluid valve needs to be opened and closed, a stator of the clutch is meshed with a rotor, the high rotating speed can be transmitted to the valve element, and the fluid valve is opened or closed within 0.2 s in cooperation with limiting of the opening and closing state mechanism on the position of the valve element; the valve element is in clearance fit with the inner wall of the valve body, abrasion of the valve element can be avoided, and the service life of the fluid valve is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the field of valves, in particular to an on-off valve. Background Art

[0002] The on-off valve is a valve used to control the flow of fluids. Generally, the opening and closing speed of a fast on-off valve is 5 seconds. However, in the field of power generation, especially in the drive system that uses airflow to drive the generator system, the diameter of the gas pipeline is relatively large, generally more than 5 cm. In this large-diameter seven-way pipeline environment, the opening and closing of the on-off valve is required to be completed quickly, even within 0.2 seconds. This opening and closing index is difficult for general fast on-off valves to achieve.

[0003] The on-off valve is used in the airflow driven generator system to supplement the high-pressure gas in the gas pipeline. Therefore, the opening and closing of the on-off valve is irregular, and intermittent gas supply is required frequently according to the pressure decay in the gas pipeline. Once the on-off valve fails, it will seriously affect the power generation process. Therefore, the on-off valve is a very important component in the power generation link, and its service life is required to reach more than 100 million times. However, according to the existing API598 standard, the number of opening and closing times of the fluid valve can only reach 100,000 times, which is far from meeting the business indicators. Summary of the invention

[0004] The purpose of the present invention is to provide a quick opening and closing valve to solve the above technical problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] The fast opening and closing valve comprises a fluid valve, which comprises a valve body, a valve core, an electric control clutch, and a driving motor; the driving motor is linked with the valve core through the electric control clutch.

[0007] In order to solve the technical problem of quickly opening and closing the fluid valve (even within 0.2s), in the present invention, an electronically controlled clutch is arranged between the drive motor and the fluid valve, the drive motor is connected to the rotor of the electronically controlled clutch, the drive motor is always in operation, the stator of the electronically controlled clutch is connected to the valve core shaft, when the fluid valve needs to be opened and closed, the electronically controlled clutch is turned on, the stator and rotor of the electronically controlled clutch are engaged, and the high speed of the drive motor is instantly transferred to the valve core, so as to realize rapid opening or closing of the fluid valve within 0.2s.

[0008] Furthermore, the valve core and the inner wall of the valve body are clearance-fitted; when the valve core is in a closed state, a cross section is taken perpendicular to the flow direction; at the same cross section, the gap area between the periphery of the valve core and the inner wall of the valve body is greater than 1% and less than 15% of the cross-sectional area of ​​the valve body.

[0009] In the present invention, when the valve core and the inner wall of the valve body are clearance-matched, there is almost no friction between the valve core and the valve body, and the wear of the valve core is very slight, thereby extending the service life of the valve core and allowing the fluid valve to be opened more than 100 million times.

[0010] According to the ratio of the gap area to the valve body cross-sectional area, if the percentage of the two is k and the diameter of the valve body cross-sectional area is D, the outer diameter d of the valve core can be expressed by the formula:

[0011] Furthermore, the motor shaft of the driving motor is linked to a rotational inertia component.

[0012] In the present invention, the drive motor is intermittently connected to the electronically controlled clutch, thereby driving the downstream components of the clutch to rotate. Therefore, the motor will be impacted at the moment when the stator and rotor of the clutch are engaged, seriously affecting the service life of the drive motor. Therefore, a rotational inertia component is linked to the motor shaft to store energy through the rotational inertia component to alleviate the impact caused by the clutch engagement and increase the service life of the drive motor.

[0013] Furthermore, at least one of the motor shaft and the valve core is linked to the electronically controlled clutch through an elastic buffer mechanism.

[0014] In the present invention, the elastic buffer mechanism is used to alleviate the impact on the drive motor caused by the moment when the clutch is engaged, thereby increasing the service life of the drive motor.

[0015] According to further optimization, the elastic buffer mechanism is a torsion spring, one end of which is connected to the electronically controlled clutch, and the other end of which is connected to at least one of the motor shaft and the valve core.

[0016] In the present invention, the torsion spring is an elastic buffer mechanism with simple structure and high reliability, which can absorb external force through torsion deformation and reduce the impact of clutch engagement on the drive motor.

[0017] According to further optimization, the elastic buffer mechanism is an elastic pin coupling, one end of the elastic pin coupling is connected to the electronically controlled clutch, and the other end is connected to at least one of the motor shaft and the valve core shaft.

[0018] In the present invention, the elastic pin coupling can absorb the impact of the buffer clutch on the drive motor when it is engaged by deforming the elastic pin. The elastically deformable pin has a variety of materials, and the elastic pin is generally made of polyurethane or nylon 6.

[0019] Furthermore, the electronically controlled clutch is an electromagnetic clutch; the electromagnetic clutch rotor is connected to the motor shaft of the driving motor, and the stator of the electromagnetic clutch is linked to the valve core.

[0020] In the present invention, the electronically controlled clutch adopts an electromagnetic clutch, which has a simple structure, fast response, rapid and stable braking, and is easy to integrate with the control system to achieve some complex linkage effects.

[0021] According to further optimization, the electromagnetic clutch is a tooth clutch; the fluid valve is a ball valve or a butterfly valve.

[0022] In the present invention, the electromagnetic clutch adopts a tooth clutch, which has a simple structure and small outer dimensions. After the motor shaft and the valve core shaft are engaged, the two connected shafts will not rotate relative to each other. It also has the advantage of being easy to integrate with the control system and can achieve complex linkage effects.

[0023] The fluid valve adopts one of a ball valve and a butterfly valve, both of which have the advantage of small operating torque and can be opened and closed quickly.

[0024] Furthermore, the fluid valve is provided with a switch conversion mechanism for controlling the valve core switch; the switch conversion mechanism is provided with a starting mechanism and a limiting mechanism; the limiting mechanism is a limiting mechanism having at least two limiting positions corresponding to the open state and the closed state of the valve core respectively; the starting mechanism is a mechanism for releasing the limiting state of the limiting mechanism; the starting mechanism is linked with the electronically controlled clutch.

[0025] The opening and closing of the fluid valve is controlled by the state of the valve core. The axis of the valve core in the open state and the valve core in the closed state are 90° apart (reasonable error is allowed). Every time the axis of the valve core rotates 90° (reasonable error is allowed), the fluid valve switches between the open and closed states. The limit mechanism is used to control the rotation of the valve core shaft under the drive of the drive motor. After it reaches the open position or the closed position, the valve core shaft is restricted from continuing to rotate to maintain the open or closed state.

[0026] The starting mechanism is used to temporarily release the limit state. When the stator and rotor of the electronically controlled clutch are engaged and the power of the drive motor is transmitted to the stator, the limit state of the valve core must be released synchronously. Otherwise, the valve core is still under the action of the limit mechanism and cannot be rotated to switch the switch state.

[0027] Further optimized, the limiting mechanism has limiting positions arranged along the center circumference, and the limiting positions are spaced 90° apart (reasonable error is allowed); the limiting mechanism is provided with one of a hole or a protrusion at the limiting position on the side facing the starting mechanism, and the other of the hole or the protrusion is provided at the limiting position on the side facing the starting mechanism; a ball is provided at the top of the protrusion.

[0028] In the present invention, the limiting mechanism has a limiting position, which is arranged on the side facing the starting mechanism, and the limiting positions are arranged along the central circumference, and the limiting positions are spaced 90 degrees apart. A hole or a protrusion can be arranged on the limiting position, but only one of them can be arranged, and the inner diameter of the hole is larger than the outer diameter of the protrusion.

[0029] The limiting mechanism is provided with one of a hole or a protrusion at the limiting position on the side facing the starting mechanism, and the other of the hole or the protrusion is provided at the limiting position on the side facing the limiting structure of the starting mechanism.

[0030] In the limit state, the protrusion is located in the hole. When the fluid valve needs to be opened and closed, a control switch signal that opens for a short time and then closes is applied to the electronically controlled clutch. The stator of the electronically controlled clutch then engages with the rotor. The engagement stroke causes the protrusion to leave the hole. This is the starting state. The protrusion is outside the hole, and the rotor drives the stator to start rotating. The protrusion slides on the mechanism surface where the hole is set through the ball at the top. At this time, the electronically controlled clutch has lost power, and the resetting thrust of the stator acts on the protrusion, but the protrusion does not fall into the hole. At this time, the engagement relationship between the stator and the rotor still exists. Therefore, even if the electronically controlled clutch has lost power, the rotor is still driving the stator to rotate until the protrusion reaches the position of the next hole. The protrusion falls into the hole, limiting the continued rotation of the stator, thereby limiting the valve core to the open or closed position, completing a rapid opening and closing process.

[0031] Further optimization, the limiting position of the limiting mechanism includes a first limiting ring composed of at least two limiting protrusions arranged on the valve core shaft, and the first limiting ring forms a limiting position corresponding to one of the open or closed states; the limiting protrusion is a protrusion arranged axially on the outer wall of the valve core shaft, and the protrusion is evenly arranged along the outer diameter of the valve core shaft; below the first limiting ring, a second limiting ring composed of at least two limiting protrusions is also arranged, and the second limiting ring forms a limiting position of a state opposite to the state indicated by the first limiting ring; the limiting protrusion of the first limiting ring and the limiting protrusion of the second limiting ring are spaced 90° apart; the starting mechanism includes a slider, and the end of the slider facing the valve core shaft is located in front of the rotation direction of the limiting protrusion; it also includes an up and down reciprocating mechanism with a linked electronically controlled clutch engagement stroke, and the stroke of the up and down reciprocating mechanism is between the first limiting ring and the second limiting ring; the slider connects the up and down reciprocating mechanism.

[0032] In the present invention, two protrusions are arranged axially on the outer wall of the valve core shaft, and the protrusions are called limit protrusions. The two limit protrusions are symmetrically arranged along the axis center, and the annular structure formed is called a first limit ring. The first limit ring can be a limit position in an open state or a limit position in a closed state, and can only be used for one state; below the first limit ring, two limit protrusions are also arranged symmetrically along the axis center, and the annular structure formed is called a second limit ring. The limit state represented by the second limit ring is opposite to that of the first limit ring. If the first limit ring is the limit position of the open state, the second limit ring is the limit position of the closed state, and vice versa.

[0033] The up and down reciprocating structure is the prior art, and the up and down reciprocating structure is linked to the meshing stroke of the electronically controlled clutch. When the meshing stroke occurs, the up and down reciprocating mechanism is driven to flip, and the flipping position falls on the first limit ring or the second limit ring.

[0034] The starting mechanism is a slider that links the up and down reciprocating mechanism. One end of the slider facing the valve core shaft is against the front of the limit convex block in the direction of rotation. At this time, it is in the limit state.

[0035] When the fluid valve needs to be opened and closed, a control switch operation is applied to the electronically controlled clutch to open for a short time and then close immediately. The stator of the electronically controlled clutch then engages with the rotor. The engagement stroke causes the upper and lower reciprocating mechanisms to flip, thereby driving the slider to leave the limit position and reach another limit ring. At this time, the limit bumps in the slider and the other limit ring differ by 90° (reasonable error is allowed). Therefore, the valve core shaft can drive the valve core to continue to rotate 90° before reaching the slider, and then enter another limit state, thereby achieving a quick opening and closing.

[0036] Furthermore, it also includes a position sensor and an electric-controlled brake mechanism; the position sensor faces the valve core shaft, the valve core shaft is provided with a positioning component, the positioning components are spaced 90° apart (reasonable errors are allowed), and the positioning components are provided with an advance offset relative to the open state position and the closed state position of the valve core; the electric-controlled brake mechanism is linked to the valve core shaft; the position sensor controls the switch signal output to connect the control signal input interface of the electric-controlled brake mechanism.

[0037] In the present invention, according to the open state position and closed state position of the valve core, a positioning component that can be detected by a position sensor is set on the valve core shaft, and the positioning component and the actual valve core position have an advance offset. A position sensor is set toward the valve core shaft to detect the approach of the positioning component. When the position detection reaches the threshold, the position sensor gives a control signal to the electric control brake mechanism. After receiving the signal, the electric control brake mechanism brakes the valve core shaft and forces the valve core shaft to stop, thereby completing the opening and closing of the fluid valve. The technical solution of using a position sensor to control the electric control brake mechanism to complete the opening and closing of the fluid valve saves the limit mechanism and the starting mechanism, and has the advantages of simple structure, reliable operation and high efficiency.

[0038] Furthermore, it also includes an air pressure sensor and a switch control system; the switch control system is provided with a signal input port and also includes a control signal output port; the air pressure sensor measuring head is arranged in the pipeline at the output end of the fluid valve, the output interface of the air pressure sensor is connected to the signal input port of the switch control system, and the switch control signal output port is connected to the control input interface of the electronically controlled clutch.

[0039] In the present invention, an air pressure sensor is used to detect the air pressure in the air pipeline to realize irregular intermittent opening and closing of the fluid valve. The air pressure sensor outputs the air pressure signal to the switch control system through the output port. When the air pressure is too low, the switch control system outputs an opening signal to the electronically controlled clutch, and the valve core completes the opening and closing of the fluid valve under the action of the starting mechanism and the limit mechanism.

[0040] In the present invention, the driving motor is connected to the electronically controlled clutch and is always in a standby state. The beneficial effect is that the driving motor is always in a rated high speed state. When the fluid valve needs to be opened and closed, the high speed is transmitted to the valve core through the clutch stator engaging the rotor. The switching conversion mechanism that controls the valve core switch limits the position of the valve core state. Even if the fluid valve has a channel with a diameter greater than 5 cm, the fluid valve can be opened or closed within 0.2 seconds. When the valve core is in a closed state, there is a clearance fit with the inner wall of the valve body, so the valve core can avoid wear between the valve body and the valve body. The beneficial effect is that the number of times the fluid valve is opened and closed is greatly increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0042] Figure 1 is a cross-sectional view of a fluid valve of the present invention;

[0043] Figure 2 is a schematic diagram of a switch conversion mechanism of the present invention;

[0044] Figure 3 is a schematic diagram of a first embodiment of a switch conversion mechanism of the present invention;

[0045] Figure 4 is a top view of a second embodiment of the switch conversion mechanism of the present invention;

[0046] Figure 5 It is a schematic diagram of a second embodiment of the switch conversion mechanism of the present invention.

[0047] Explanation of symbols:

[0048] 1. Fluid valve; 2. Valve body; 3. Valve core; 4. Electronically controlled clutch; 5. Valve core shaft; 6. Driving motor; 7. Rotational inertia component; 8. Switch conversion mechanism; 9. Slider; 10. Protrusion; 11. Hole; 51. First limit ring; 52. Second limit ring; 81. Starting mechanism; 82. Limit mechanism. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0052] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0053] Reference Figure 1 As shown, the quick opening and closing valve includes a fluid valve 1, which has a valve body 2, a valve core 3, an electronically controlled clutch 4, and a drive motor 6; the drive motor 6 is linked with the valve core 3 through the electronically controlled clutch 4.

[0054] The opening and closing of the fluid valve 1 needs to be completed quickly (even within 0.2 seconds), so in this embodiment, the operation of the fluid valve 1 is performed by the drive motor 6. However, the time required for the drive motor 6 to reach the rated speed from rest is relatively long, and if the opening and closing of the fluid valve 1 is controlled by starting the drive motor 6, the opening and closing of the fluid valve 1 cannot be completed quickly (even within 0.2 seconds).

[0055] In order to solve the technical problem of quickly opening and closing the fluid valve 1 (even within 0.2s), in this embodiment, an electronically controlled clutch 4 is arranged between the drive motor 6 and the fluid valve 1, and the drive motor 6 is connected to the rotor of the electronically controlled clutch 4. The drive motor 6 is always in operation, and the stator of the electronically controlled clutch 4 is connected to the valve core 3. When the fluid valve 1 needs to be opened and closed, the electronically controlled clutch 4 is turned on, and the stator and rotor of the electronically controlled clutch 4 are engaged, thereby instantly transferring the high speed of the drive motor 6 to the valve core 3, so as to realize rapid opening or closing of the fluid valve 1 within 0.2s.

[0056] The valve core 3 and the inner wall of the valve body 2 are clearance-fitted; when the valve core 3 is in a closed state, a cross section is taken perpendicular to the flow direction; at the same cross section, the clearance area between the periphery of the valve core 3 and the inner wall of the valve body 2 is greater than 1% and less than 15% of the cross-sectional area of ​​the valve body 2.

[0057] In this embodiment, when the valve core 3 and the inner wall of the valve body 2 are clearance-fitted, there is almost no friction between the valve core 3 and the valve body 2, and the wear of the valve core 3 is very slight, thereby extending the service life of the valve core 3 and allowing the fluid valve 1 to be opened more than 100 million times.

[0058] According to the ratio of the gap area to the cross-sectional area of ​​the valve body 2, if the percentage of the two is k and the diameter of the cross-sectional area of ​​the valve body 2 is D, the outer diameter d of the valve core 3 can be expressed by the formula:

[0059] The motor shaft of the driving motor 6 is linked with a rotational inertia component 7 .

[0060] The drive motor 6 is intermittently connected to the electronically controlled clutch 4, thereby driving the downstream components of the clutch to rotate. Therefore, the motor will be impacted at the moment when the stator and rotor of the clutch are engaged, seriously affecting the service life of the drive motor 6. Therefore, a rotating inertia component 7 is linked to the motor shaft to store energy through the rotating inertia component 7 to alleviate the impact caused by the clutch engagement.

[0061] In this embodiment, the rotation inertia component 7 can be a flywheel. The flywheel is a prior art and can be arranged in the front and rear axles of the motor or even in other power links.

[0062] At least one of the motor shaft and the valve core 3 is linked to the electronically controlled clutch 4 through an elastic buffer mechanism.

[0063] In this embodiment, the elastic buffer mechanism is used to alleviate the impact on the drive motor 6 caused by the moment of clutch engagement, thereby increasing the service life of the drive motor 6.

[0064] The elastic buffer mechanism is a torsion spring, one end of which is connected to the electronically controlled clutch 4 , and the other end of which is connected to at least one of the motor shaft and the valve core 3 .

[0065] The torsion spring is an embodiment of an elastic buffer mechanism. In this embodiment, the torsion spring is an elastic buffer mechanism with a simple structure and high reliability. It can absorb external forces through torsional deformation and reduce the impact of clutch engagement on the drive motor 6.

[0066] The elastic buffer mechanism is an elastic pin coupling, one end of which is connected to the electric control clutch 4 , and the other end of which is connected to at least one of the motor shaft and the valve core shaft 5 .

[0067] The elastic pin coupling is another embodiment of the elastic buffer mechanism. In this embodiment, the impact on the drive motor 6 when the buffer clutch is engaged is absorbed by the deformation of the elastic pin.

[0068] There are many materials for elastically deformable column pins, and elastic column pins are generally made of polyurethane, nylon 6, etc.

[0069] Furthermore, the electronically controlled clutch 4 is an electromagnetic clutch; the electromagnetic clutch rotor is connected to the motor shaft of the driving motor 6, and the stator of the electromagnetic clutch is linked to the valve core 3.

[0070] In this embodiment, the electronically controlled clutch 4 is an electromagnetic clutch, which has a simple structure, fast response, rapid and stable braking, and is easy to integrate with the control system to achieve some complex linkage effects.

[0071] The electromagnetic clutch is a tooth clutch; the fluid valve 1 is a ball valve or a butterfly valve.

[0072] In this embodiment, the electromagnetic clutch adopts a tooth clutch. The tooth clutch has a simple structure and small outer dimensions. After the motor shaft and the valve core shaft 5 are engaged, the two connected shafts will not rotate relative to each other. It also has the advantage of being easy to integrate with the control system and can achieve complex linkage effects.

[0073] The fluid valve 1 is a ball valve or a butterfly valve. Both of these fluid valves 1 have the advantage of small operating torque and can be opened and closed quickly.

[0074] Reference Figure 2 As shown, the fluid valve 1 is provided with a switch conversion mechanism 8 for controlling the switch of the valve core 3; the switch conversion mechanism 8 is provided with a starting mechanism 81 and a limiting mechanism 82; the limiting mechanism 82 is a limiting mechanism 82 having at least two limiting positions corresponding to the open state and the closed state of the valve core 3 respectively; the starting mechanism 81 is a mechanism for releasing the limiting state of the limiting mechanism 82; the starting mechanism 81 is linked with the electronically controlled clutch 4.

[0075] The opening and closing of the fluid valve 1 is controlled by the state of the valve core 3. The position of the valve core 3 in the open state and the position of the valve core 3 in the closed state are 90° apart (reasonable error is allowed). Every time the valve core 3 rotates 90° (reasonable error is allowed), the fluid valve 1 switches between the open and closed states. The limit mechanism 82 is used to control the rotation of the valve core 3 when driven by the drive motor 6. After every 90° (reasonable error is allowed), the valve core 3 is limited to continue rotating to maintain the open or closed state.

[0076] The starting mechanism 81 is used to temporarily release the limit state. When the stator of the electronically controlled clutch 4 engages with the rotor and the power of the driving motor 6 is transmitted to the stator, the limit state of the valve core 3 must be released synchronously. Otherwise, the valve core 3 is still under the action of the limit mechanism 82 and cannot be rotated to switch the switch state.

[0077] Reference Figure 3 As shown, the limiting mechanism 82 has limiting positions arranged along the central circumference, and the limiting positions are spaced 90° apart; the limiting mechanism 82 is provided with one of the holes 11 or the protrusions 10 at the limiting position on the side facing the starting mechanism 81, and the other of the holes 11 or the protrusions 10 is provided at the limiting position on the side facing the starting mechanism 81 toward the limiting mechanism 82; a ball is provided at the top of the protrusion 10.

[0078] This embodiment is one of the embodiments of the switch conversion mechanism 8 . The limiting is achieved by the cooperation of the hole 11 and the protrusion 10 . When the protrusion 10 falls into the hole 11 , the hole 11 will limit the radial rotation of the protrusion 10 .

[0079] In this embodiment, the limiting position of the limiting mechanism 82 is set on the side facing the starting mechanism 81, and the limiting positions are set along the central circumference. The limiting positions are spaced 90° apart (reasonable error is allowed). A hole 11 or a protrusion 10 can be set at the limiting position, but only one of them can be used. The inner diameter of the hole 11 is larger than the outer diameter of the protrusion 10.

[0080] The limiting mechanism 82 is provided with one of the holes 11 and the protrusions 10 at the limiting position on the side facing the starting mechanism 81 , and the other of the holes 11 and the protrusions 10 is provided at the limiting position on the side facing the limiting structure of the starting mechanism 81 .

[0081] In the limit state, the protrusion 10 is located in the hole 11. When the fluid valve 1 needs to be opened and closed, a control switch signal of a short opening and then closing is applied to the electronically controlled clutch 4. The stator of the electronically controlled clutch 4 is then engaged with the rotor. The engagement stroke causes the protrusion 10 to leave the hole 11. At this time, it is in the starting state. The protrusion 10 is located outside the hole 11. The rotor drives the stator to start rotating. The protrusion 10 slides on the mechanism surface where the hole 11 is set through the ball at the top. At this time, the electronically controlled clutch 4 has lost power, and the reset thrust of the stator acts on the protrusion 10, but the protrusion 10 does not fall into the hole 11. At this time, the engagement relationship between the stator and the rotor still exists. Therefore, even if the electronically controlled clutch 4 has lost power, the rotor is still driving the stator to rotate until the protrusion 10 reaches the position of the next hole 11. The protrusion 10 falls into the hole 11, which limits the continued rotation of the stator, thereby limiting the valve core 3 to the open or closed position, completing a rapid opening and closing process.

[0082] Reference Figure 4 , Figure 5 As shown, the limiting position of the limiting mechanism 82 includes a first limiting ring 51 composed of at least two limiting protrusions arranged on the valve core shaft 5, and the first limiting ring 51 forms a limiting position corresponding to one of the open or closed states; the limiting protrusion is a protrusion arranged axially on the outer wall of the valve core shaft 5, and the protrusion is evenly arranged along the outer diameter of the valve core shaft 5; below the first limiting ring 51, a second limiting ring 52 composed of at least two limiting protrusions is also arranged, and the second limiting ring 52 forms a limiting position of a state opposite to the state indicated by the first limiting ring 51; the limiting protrusion of the first limiting ring 51 and the limiting protrusion of the second limiting ring 52 are spaced 90° apart; the starting mechanism 81 includes a slider 9, and the end of the slider 9 facing the valve core shaft 5 is located in front of the rotation direction of the limiting protrusion; it also includes an up and down reciprocating mechanism with a meshing stroke of a linked electronically controlled clutch 4, and the stroke of the up and down reciprocating mechanism is between the first limiting ring 51 and the second limiting ring 52; the slider 9 connects the up and down reciprocating mechanism.

[0083] This embodiment is the second embodiment of the switch conversion mechanism 8. The limit is achieved by using a slider 9 and a protrusion on the shaft wall of the valve core shaft 5. When the slider 9 appears in front of the protrusion, the rotation of the valve core shaft 5 is limited.

[0084] In this embodiment, two protrusions are axially arranged on the outer wall of the valve core shaft 5, and the protrusions are called limit protrusions. The two limit protrusions are symmetrically arranged along the axis center, and the annular structure formed by them is called a first limit ring 51. The first limit ring 51 can be a limit position in the open state or a limit position in the closed state, and can only be used for one state; below the first limit ring 51, two limit protrusions are also arranged, and the two limit protrusions are symmetrically arranged along the axis center, and the annular structure formed by them is called a second limit ring 52. The limit state represented by the second limit ring 52 is opposite to that of the first limit ring 51. If the first limit ring 51 is the limit position of the open state, the second limit ring 52 is the limit position of the closed state, and vice versa.

[0085] The up-and-down reciprocating structure is a prior art, and the up-and-down reciprocating structure is linked to the meshing stroke of the electronically controlled clutch 4 . When the meshing stroke occurs, the up-and-down reciprocating mechanism is driven to flip, and the flipping position falls on the first limit ring 51 or the second limit ring 52 .

[0086] The starting mechanism 81 is a slider 9 that is linked to the up and down reciprocating mechanism. One end of the slider 9 that faces the valve core shaft 5 is against the front of the limiting protrusion in the direction of rotation, and is in a limiting state at this time.

[0087] When the fluid valve 1 needs to be opened and closed, a control switch operation of opening and closing for a short time is applied to the electronically controlled clutch 4, and the stator of the electronically controlled clutch 4 is then engaged with the rotor. The engagement stroke causes the upper and lower reciprocating mechanisms to flip, thereby driving the slider 9 to leave the limit position and arrive at another limit ring. At this time, the slider 9 and the limit bump in the other limit ring differ by 90° (reasonable error is allowed), so the valve core shaft 5 can drive the valve core 3 to continue to rotate 90° (reasonable error is allowed) and then reach the slider 9, and then enter another limit state, thereby achieving a quick opening and closing.

[0088] It also includes a position sensor and an electric-controlled brake mechanism; the position sensor faces the valve core shaft 5, the valve core shaft 5 is provided with a positioning component, the positioning components are spaced 90° apart (reasonable errors are allowed), and the positioning components are provided with an advance offset relative to the open state position and the closed state position of the valve core 3; the electric-controlled brake mechanism is linked to the valve core shaft 5; the position sensor controls the switch signal output to be connected to the control signal input interface of the electric-controlled brake mechanism.

[0089] In this embodiment, according to the open state position and closed state position of the valve core 3, a positioning component that can be detected by the position sensor is provided on the valve core shaft 5, and there is an advance offset between the positioning component and the actual valve core 3 position. A position sensor is provided toward the valve core shaft 5 to detect the approach of the positioning component. When the position detection reaches a threshold value, the position sensor gives a control signal to the electronically controlled brake mechanism. After receiving the signal, the electronically controlled brake mechanism brakes the valve core shaft 5, forcing the valve core shaft 5 to stop, thereby completing the opening and closing of the fluid valve 1.

[0090] It also includes an air pressure sensor and a switch control system; the switch control system is provided with a signal input port and a control signal output port; the air pressure sensor measuring head is arranged in the pipeline at the output end of the fluid valve 1, the output interface of the air pressure sensor is connected to the signal input port of the switch control system, and the switch control signal output port is connected to the control input interface of the electronically controlled clutch 4.

[0091] In this embodiment, an air pressure sensor is used to detect the air pressure in the air pipeline to realize irregular intermittent opening and closing of the fluid valve 1. The air pressure sensor outputs the air pressure signal to the switch control system through the output port. When the air pressure is too low, the switch control system outputs an opening signal to the electronically controlled clutch 4, and the valve core 3 completes the opening and closing of the fluid valve 1 under the action of the starting mechanism 81 and the limit mechanism 82.

[0092] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0093] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0094] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A quick opening and closing valve, comprising a fluid valve, the fluid valve having a valve body and a valve core, characterized in that: It also includes an electronically controlled clutch and a drive motor; The drive motor is linked to the valve core through an electronically controlled clutch.

2. The quick opening and closing valve according to claim 1, characterized in that: The valve core and the inner wall of the valve body are clearance-fitted; The valve core is in a closed state, and a cross section is taken perpendicular to the flow direction; At the same cross section, the clearance area between the periphery of the valve core and the inner wall of the valve body is greater than 1% and less than 15% of the cross-sectional area of ​​the valve body.

3. The quick opening and closing valve according to claim 1, characterized in that: The motor shaft of the driving motor is linked with a rotation inertia component.

4. The quick opening and closing valve according to claim 1, characterized in that: At least one of the motor shaft and the valve core is linked to the electric control clutch through an elastic buffer mechanism.

5. The quick opening and closing valve according to claim 4, characterized in that: The elastic buffer mechanism is a torsion spring, one end of which is connected to the electric-controlled clutch, and the other end of which is connected to at least one of the motor shaft and the valve core.

6. The quick opening and closing valve according to claim 1, characterized in that: The electronically controlled clutch is an electromagnetic clutch; the electromagnetic clutch rotor is connected to the motor shaft of the driving motor, and the stator of the electromagnetic clutch is linked to the valve core; the electromagnetic clutch is a tooth clutch; the fluid valve is one of a ball valve and a butterfly valve.

7. The quick opening and closing valve according to claim 1, characterized in that: The fluid valve is provided with a switch conversion mechanism for controlling the switch of the valve core; The switch conversion mechanism is provided with a starting mechanism and a limiting mechanism; The limiting mechanism is a limiting mechanism having at least two limiting positions corresponding to the open state and the closed state of the valve core respectively; The starting mechanism is a mechanism for releasing the limiting state of the limiting mechanism; The starting mechanism is linked with the electronically controlled clutch.

8. The quick opening and closing valve according to claim 7, characterized in that: The limiting mechanism has limiting positions arranged along the central circumference, and the limiting positions are spaced 90° apart; The limiting mechanism is provided with one of a hole or a protrusion at a limiting position on a side facing the starting mechanism, and the other of the hole or the protrusion is provided at a limiting position on a side facing the limiting mechanism of the starting mechanism; A ball is arranged at the top of the protrusion; the limiting position of the limiting mechanism includes a first limiting ring composed of at least two limiting protrusions arranged on the valve core shaft, and the first limiting ring forms a limiting position corresponding to one of the open or closed states; The limiting protrusions are protrusions arranged along the axial direction on the outer wall of the valve core shaft, and the protrusions are evenly arranged along the outer diameter of the valve core shaft; A second limiting ring composed of at least two limiting protrusions is further provided below the first limiting ring, and the second limiting ring forms a limiting position in a state opposite to the state indicated by the first limiting ring; The limiting protrusion of the first limiting ring and the limiting protrusion of the second limiting ring are spaced 90 degrees apart; The starting mechanism comprises a slider, one end of which faces the valve core shaft and is located in front of the limiting protrusion in the rotation direction; It also includes an up-and-down reciprocating mechanism with a linked electric-controlled clutch engagement stroke, wherein the stroke of the up-and-down reciprocating mechanism is between the first limit ring and the second limit ring; The slider connects the upper and lower reciprocating mechanisms.

9. The quick opening and closing valve according to claim 1, characterized in that: It also includes a position sensor and an electronically controlled brake mechanism; The position sensor faces the valve core shaft, and the valve core shaft is provided with a positioning component, the positioning components are spaced 90 degrees apart, and the positioning component is provided with an advance offset relative to the open state position and the closed state position of the valve core; The electronically controlled brake mechanism is linked to the valve core shaft; The position sensor control switch signal output is connected to the control signal input interface of the electric control brake mechanism.

10. The quick opening and closing valve according to claim 1, characterized in that: It also includes an air pressure sensor and a switch control system; The switch control system is provided with a signal input port and also includes a control signal output port; The air pressure sensor measuring head is arranged in the pipeline at the output end of the fluid valve, the output interface of the air pressure sensor is connected to the signal input port of the switch control system, and the switch control signal output port is connected to the control input interface of the electronically controlled clutch.

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