KR101015396B1 - Electric motor type actuator for operating valve - Google Patents

Abstract

PURPOSE: An electric motor type valve driver is provided to improve the operating stability by fixing a mode selecting member in a lock mode so as to prevent the power supply to the motor. CONSTITUTION: An electric motor type valve driver comprises a housing(110), a motor(120), an operating unit, a controller, a mode selecting member(180), and a power cutoff unit. The motor is installed inside the housing and rotated with electricity. The operating unit is driven with the motor or a user to move a valve installed in a pipe, thereby opening and closing the pipe. The controller includes a plurality of boars and switching elements and controls the motor. The mode selecting member has an inner bar, an outer bar which rotates the inner bar, and a lock ring. The power cutoff unit cuts off the power provided to the motor when the mode selecting member is located in a lock mode.

Description

ELECTRIC MOTOR TYPE ACTUATOR FOR OPERATING VALVE}

The present invention relates to an electric motor valve actuator.

Industrial plants, such as chemical plants or power plants, are equipped with valves to prevent accidents by regularly opening and closing petroleum piping, water piping or steam piping, or by opening and closing petroleum piping, water piping or steam piping quickly in an emergency. have.

The valve opens and closes the pipe while being operated by an electric motor, an air motor or a cylinder, and the valve actuator is roughly divided into an electric motor valve actuator, an air motor valve actuator and a pneumatic cylindrical valve actuator depending on the driving source of the valve.

In general, the electric motor-type valve manipulator includes a motor driven by electricity, an operating part for linearly reciprocating the valve while operating by the motor, and a control part having a plurality of switch units, a substrate, and the like.

In addition, the electric motor valve manipulator is provided with an automatic mode for operating the operating unit with the motor and a manual mode for operating the operating unit by applying a force.

The conventional electric motor-type valve manipulator as described above is supplied with electricity to the motor even if the locking function is set so as not to be switched to the manual mode while the automatic mode for operating the valve is set to the motor. Therefore, any person can operate the control unit to drive the motor. Then, the operating part is operated by the motor to operate the valve, which may cause a malfunction.

The present invention has been made in order to solve the problems of the prior art as described above, an object of the present invention is to shut off the power supplied to the motor when setting the lock mode, the electric motor-type valve manipulator that can solve the problem of malfunction In providing.

An electric motor valve actuator according to the present invention for achieving the above object, the housing; A motor installed inside the housing and rotating by electricity; An operating unit installed inside the housing and operating to open or close the pipe by moving a valve installed inside the pipe while operating by a driving force of the motor or a force of an operator; A control unit installed inside the housing and having a plurality of substrates and a plurality of switch elements to control the motor; One side is located inside the housing and the other side is located outside the housing and rotatably installed, and the operation is operated in a manual mode in which the operation unit is operated by the operator in an automatic mode in which the operation unit is operated by the motor. A mode selecting member for clutching the unit or clutching the operating unit such that the operating unit is located in a lock mode between the automatic mode and the manual mode; And a means installed in the housing to move by the mode selection member and to cut off the power supplied to the motor when the mode selection member is positioned in the lock mode.

When the electric motor-type valve manipulator according to the present invention places the mode selection member in the lock mode, no power is supplied to the motor, so that any user cannot operate the operation portion. Thus, malfunction of the valve is prevented.

Further, since the mode selection member can be fixed so as not to rotate in the state where the mode selection member is placed in the lock mode, it is more secure.

1 is a perspective view of an electric motor-type valve actuator according to an embodiment of the present invention.
Figure 2 is a perspective view of the main body of Figure 1;
3 is an exploded perspective view of the operation unit shown in FIG.
4 is an exploded perspective view of the mode selection member and the power cutoff means shown in FIG.
5a to 5c are views showing the operation of the electric motor valve manipulator according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail an electric motor valve manipulator according to an embodiment of the present invention.

1 is a perspective view of an electric motor valve manipulator according to an embodiment of the present invention, Figure 2 is a perspective view of the main body of Figure 1;

As shown, a housing 110 having first to third housings 111, 113, and 115 coupled to each other is provided.

A motor 120 that rotates by electricity is installed in the first housing 111, and a valve coupled to the lower end side while being rotated by the driving force of the motor 120 or the operator's power in the second housing 113 (not shown). The operation unit 130 for elevating) is installed, and the motor 120 has a plurality of substrates 151, a plurality of switch elements 153, and a plurality of terminal blocks (not shown) in the third housing 115. The controller 150 for controlling the back is provided.

The operation unit 130 will be described with reference to FIGS. 1 and 3. 3 is an exploded perspective view of the operation unit shown in FIG.

As shown, the operation unit 130 has a drive shaft 131. The valve is coupled to a lower end side of the drive shaft 131, and a handle 170 (see FIG. 1) is installed at an upper portion of the drive shaft 131. The drive shaft 131 rotates due to the driving force of the motor 120 or the external force applied by the operator to the handle 170, and the valve is lifted by the rotation of the drive shaft 131 to open and close the petroleum pipe, water pipe or steam pipe. do.

A worm wheel 133 is installed on an outer circumferential surface of the drive shaft 131 so as to be rotatable independently of the drive shaft 131, and the worm wheel 133 is a worm formed on the rotation shaft 121 of the motor 120. 123). Therefore, when the motor 120 is driven to rotate the rotating shaft 121, the worm wheel 133 is rotated by the worm 123. A plurality of locking grooves 133a are formed on the top surface of the worm wheel 133.

On the outer circumferential surface of the drive shaft 131 on the upper side of the worm wheel 133, a cylindrical first clutch 135 having an open upper and lower surfaces is rotatably installed independently of the drive shaft 131. A plurality of first locking protrusions 135a are formed on the bottom surface of the first clutch 135 and inserted into the locking grooves 133a. The worm wheel 133 is formed by the locking grooves 133a and the first locking protrusions 135a. 1), the first clutch 135 rotates. A plurality of second locking protrusions 135b are formed on the top surface of the first clutch 135.

A cross section 135c is formed on the outer circumferential surface of the first clutch 135, and a ring-shaped clutch yoke 141 is rotatably installed on the cross section 135c. The clutch yoke 141 raises the second clutch 137 to be described later so that the second clutch 137 is not connected to the first clutch 135. And, the lower surface of the clutch yoke 141 is formed with a mounting groove (141a), the upper surface is formed with a support protrusion (141b). The clutch yoke 141 will be described later.

The support protrusion 141b is supported by a cylindrical second clutch 137 having an upper and lower surface open thereto. The second clutch 137 is inserted into the outer circumferential surface of the drive shaft 131, and a third locking protrusion 137a on which the second locking protrusion 135b is caught is formed at the bottom surface. When the first clutch 135 rotates by the second locking protrusion 135b and the third locking protrusion 137a, the second clutch 137 rotates.

A plurality of fourth locking protrusions 137b are formed on the upper end surface of the second clutch 137, and key grooves 131a and 137c are formed on the outer circumferential surface of the drive shaft 131 and the inner circumferential surface of the second clutch 137, respectively. The key 142 is inserted into the key grooves 131a and 137c to couple the driving shaft 131 and the second clutch 137. Thus, when the second clutch 137 rotates, the driving shaft 131 rotates.

A lower side of the elastic member 143 is supported on the end face 137d formed on the outer circumferential surface of the second clutch 137. The elastic member 143 descends the second clutch 137 raised by the clutch yoke 141 to return to the initial state.

A ring-shaped bearing guide 144 is supported on the upper side of the elastic member 143, and a bearing 145 is supported on the bearing guide 144. A plurality of through grooves 144a are formed in the bearing guide 144, and the fourth engaging protrusions 137b of the second clutch 137 penetrate through the through grooves 144a to protrude upward.

The third clutch 139 is installed on the upper surface of the bearing 145. A fifth locking protrusion 139a through which the fourth locking protrusion 137b is inserted and engaged is formed on the lower surface of the third clutch 139, and the handle 170 is coupled to the upper surface of the third clutch 139. Therefore, when the operator manually rotates the handle 170, the third clutch 139 rotates, thereby rotating the drive shaft 131 while the second clutch 137 rotates.

That is, when the first clutch 135 and the second clutch 137 are connected, the driving shaft 131 rotates by the driving force of the motor 120, and the second clutch 137 and the third clutch 139 are rotated. When is connected is the manual mode in which the drive shaft 131 rotates by the handle 170. The second clutch 137 is raised by the clutch yoke 141 and selectively transmitted to the drive shaft 131 the driving force of the motor 120 and the force acting on the handle 170 while descending by the elastic member 143. do.

In the electric motor-type valve manipulator according to the present embodiment, the mode selection member 180 is rotatably provided.

The mode selection member 180 is located in one side of the housing 110 and the other side is located in the housing 113 is rotatably installed. When the other side of the mode selection member 180 is grasped and rotated, the operation unit 130 is clutched into the manual mode operated by the handle 170 in the automatic mode operated by the motor 120. When the mode selection member 180 is rotated to be positioned between the automatic mode and the manual mode, a lock mode for locking the mode selection member 180 to be prevented from being rotated may be selected.

The mode selection member 180 will be described with reference to FIGS. 1 to 4. FIG. 4 is an exploded perspective view of the mode selection member and the power cut-off means shown in FIG. 2.

As shown, the mode selection member 180 has a support bracket 181 that is penetrated and fixed to the second housing 113 (see FIG. 1).

One side of the inner bar 183 is rotatably installed and supported by the support bracket 181, and the other side of the inner bar 183 is located inside the second housing 113 (see FIG. 1). The outer peripheral surface of the center portion side 183 is formed along the circumferential direction, and a recessed groove 183a is formed in which one side and the other side communicate with the outside of the inner bar 183. The bottom surface of the recessed groove 183a is preferably flat.

An outer bar 185 is integrally formed at one end of the inner bar 183. The outer bar 185 is positioned outside the second housing 113 (see FIG. 1) while being substantially perpendicular to the inner bar 183, and the inner bar 183 rotates as the outer bar 185 is rotated. do.

An outer circumferential surface of the inner bar 183 is formed with a locking ring 187 that is integrally rotated with the inner bar 183. As the inner bar 183 rotates to the manual mode in the automatic mode, the locking ring 187 is inserted into the seating groove 141a of the clutch yoke 141 and caught to raise the clutch yoke 141. The portion of the locking ring 187 inserted into the seating groove 141a is preferably formed at an angle.

A support hole 141c (see FIG. 3) is formed on a lower surface of the clutch yoke 141 which is substantially point symmetrical with the seating groove 141a with respect to the center of the clutch yoke 141, and the second housing 113 (FIG. 1) a support protrusion (not shown) is inserted into the support hole 141c to support the clutch yoke 141. Accordingly, the clutch yoke 141 rotates in the shape of a pendulum by the locking ring 187 around the support hole 141c, and the clutch yoke 141 rotates upward when the portion of the clutch yoke 141 in which the seating groove 141a is formed rotates upward. The second clutch 137 is raised by the yoke 141.

That is, since the clutch yoke 141 rotates by the locking ring 187 and the second clutch 137 rises by the rotation of the clutch yoke 141, the operation unit 130 by the locking ring 187. ) Is clutched to the lock mode or the manual mode.

Protruding pieces 181a and 185a are formed on the support bracket 181 and the outer bar 185, respectively, and locking holes 181aa and 185aa are formed on the protruding pieces 181a and 185a, respectively. The locking hole 181aa and the locking hole 185aa face each other when the outer bar 185 is rotated and positioned in the locking mode.

When the lock hole 181aa and the lock hole 185aa face each other, when the lock 189 (see FIG. 5C) is filled in the lock holes 181aa and 185aa, the mode selection member 180 is fixed and cannot be rotated. The operation unit 130 is to maintain the state of the lock mode.

When the mode selection member 180 is positioned in the lock mode, it is possible to interrupt power between the second clutch 137 and the third clutch 139 to block power between the handle 170 and the drive shaft 131. desirable.

The electric motor-type valve manipulator according to the present embodiment is provided with a means for shutting off the power supplied to the motor 120 when the mode selection member 180 is positioned in the lock mode while being moved by the mode selection member 180. do.

The power cutoff means transmits a signal to the controller 150 so that the controller 150 cuts off the control power supplied to the motor 120, which will be described with reference to FIGS. 1 to 4.

As shown, the power cut-off means has a support tube 191 installed at a boundary between the second housing 113 (see FIG. 1) and the third housing 115 (see FIG. 1).

Rotating bar 193 is inserted into the support tube 191 to be rotatably installed. One end of the rotating bar 193 faces the inner bar 183 and the other end of the switch element 153 of the controller 150. Face to the side.

One end surface of the rotary bar 193 facing the inner bar 183 side is formed with a support plate 193a having a diameter larger than the diameter of the rotary bar 193 is located outside the support tube 191.

The contact protrusion 193aa protrudes from the edge of the support plate 193a. The contact protrusion 193aa is formed at an eccentric position with respect to the center of the support plate 193a, that is, the center of rotation of the rotation bar 193, and the bottom surface or recessed groove of the recessed groove 183a of the inner bar 183 ( 183a) it is in contact with the outer circumferential surface of the inner bar 183 outside.

In the state in which the mode selection member 180 is located in the automatic mode, the recessed groove 183a of the inner bar 183 faces substantially the front side, and the contact protrusion 193aa is the inner bar 183 outside the recessed groove 183a. Contact the outer circumferential surface thereof (see FIG. 5A). In this state, when the mode selection member 180 is rotated to be positioned in the lock mode or the manual mode, the recessed groove 183a faces substantially the lower side, and the contact protrusion 193aa is connected to the bottom surface of the recessed groove 183a. Contact (see FIG. 5B). Then, the contact protrusion 193aa rises from the lower side to the upper side. Since the contact protrusion 193aa is eccentric at the rotation center of the rotation bar 193, the rotation bar 193 is rotated by the contact protrusion 193aa.

One end of the connection bar 195 is coupled to the other end surface of the rotation bar 193 facing the controller 150 to rotate integrally with the rotation bar 193. The connecting bar 195 is rotatably supported by the bracket 155 (see FIG. 2) in which the components of the controller 150 are supported, and the other end thereof is the third housing 115 (see FIG. 1) in which the controller 150 is installed. ) Is located inside.

Referring to the coupling structure of the rotary bar 193 and the connection bar 195, the other end surface of the rotary bar 193 is formed with a non-circular ellipse or a square coupling hole 193b, one end of the connection bar 195 The portion is formed in a shape corresponding to the coupling hole (193b) is inserted and coupled to the coupling hole (193b). Therefore, when the rotation bar 193 rotates, the connection bar 195 rotates.

The pressing piece 197 is formed at the other end side of the connecting bar 195. The pressing piece 197 rotates together with the connecting bar 195 and presses the limit switch 153a of the switch element 153 when the mode selection member 180 is positioned in the lock mode. Then, the controller 150 receives a signal from the limit switch 153a and cuts off the control power supplied to the motor 120.

An elastic member 199 is installed inside the support tube 191 to return the rotated rotating bar 193 to an initial state.

When the electric motor-type valve manipulator according to the present embodiment is positioned in the lock mode, the control power is not supplied to the motor 120, so that any user cannot operate the operation unit 130. Thus, malfunction of the valve is prevented.

In addition, when the mode selection member 180 is positioned in the lock mode and locked with the lock 189, the mode selection member 180 cannot be rotated, thereby making it more secure.

5A to 5C illustrate the operation of the electric motor valve manipulator according to an embodiment of the present invention.

As shown in FIG. 5A, in the normal state, the outer bar 185 of the mode selection member 180 is positioned at approximately 2 o'clock with respect to the inner bar 183. This state is located in the automatic mode, and the driving force of the motor 120 (see FIG. 1) is driven by the worm wheel 133 (see FIG. 1) → the first clutch 135 → the second clutch 137. 131 is passed to. Then, the driving shaft 131 rotates by the motor 120 to lift the valve.

When the drive shaft 131 cannot be rotated by the driving force of the motor 120 due to a failure of the motor 120 in the state of the automatic mode shown in FIG. 5A, as shown in FIG. 5B, the mode selection member The outer bar 185 of 180 is rotated counterclockwise. Then, the inner bar 183 rotates, and the engaging ring 187 is rotated by the inner bar 183 to be inserted into the seating groove 141a of the clutch yoke 141 to rotate and raise the clutch yoke 141. . Then, the second clutch 137 is raised by the clutch yoke 141 to be in the passive mode connected with the third clutch 139.

In the manual mode, the operator's force acting on the handle 170 (see FIG. 1) is transmitted to the drive shaft 131 through the third clutch 139 to the second clutch 137.

When the valve is no longer needed in the automatic mode shown in FIG. 5A, as shown in FIG. 5C, the outer bar 185 of the mode selection member 180 is slightly rotated counterclockwise. To lock mode. Then, since the locking hole 185aa of the outer bar 185 and the locking hole 181aa of the fixing bracket 181 are opposed to each other, the mode selection member 180 is filled by filling the lock 189 in the locking holes 185aa and 181aa. Fix it so that it does not rotate.

When the mode selection member 180 is positioned in the lock mode, the contact protrusion 193aa (see FIG. 4) of the rotation bar 193 in contact with the outer circumferential surface of the inner bar 183 of the mode selection member 180 is recessed. Since it contacts the bottom surface of 183a, the rotation bar 193 rotates by the contact protrusion 193aa.

Then, as shown in FIG. 4, the rotary bar 193 rotates the connecting bar 195 and the pressing piece 197 while pressing the limit switch 153a of the controller 150, and the controller 150 Receiving a signal from the limit switch 153a cuts off the control power supplied to the motor 120.

In the above, the present invention has been described in accordance with the embodiments of the present invention, but those skilled in the art to which the present invention belongs without change and modification within the scope without departing from the spirit of the present invention Of course.

110: housing 120: motor
130: operating unit 150: control unit
153a: limit switch 170: handle
180: mode selection member 191: support tube
193: rotating bar 195: connecting bar
197: pressing piece 199: elastic member

Claims (8)

housing;
A motor installed inside the housing and rotating by electricity;
An operating unit installed inside the housing and operating to open or close the pipe by moving a valve installed inside the pipe while operating by a driving force of the motor or a force of an operator;
A control unit installed inside the housing and having a plurality of substrates and a plurality of switch elements to control the motor;
One side is supported on the housing and the other side is located inside the housing and rotatably installed, and an inner circumferential surface formed in a circumferential direction, the inner side bar having a recessed groove in which one side and the other side communicate with the outer side, one end of the inner bar Is formed on the outer side of the housing and rotates the inner bar, the inner bar is formed on the inner bar and rotates together with the inner bar while raising a part of the operating part by the motor to operate the operating part by the motor A mode selection member having a locking ring which is operated by the operator in the automatic mode or the manual mode in the manual mode or the clutch in the automatic mode, or clutched to be located in a lock mode between the automatic mode and the manual mode;
An electric motor-type valve manipulator installed in the housing and moving by the mode selection member, the means for disconnecting power supplied to the motor when the mode selection member is positioned in the lock mode. . The method of claim 1,
The housing is provided with a support bracket for inserting and supporting one side of the inner bar,
When the outer bar is rotated and positioned in the lock mode, the support bracket and the outer bar are respectively formed with locking holes facing each other.
The outer bar is an electric motor valve actuator, characterized in that the lock is inserted into the locking hole of the support bracket and the outer bar is locked by a lock. The method of claim 2,
And the power cut-off means transmits a signal to the controller so that the controller cuts off the power supplied to the motor. The method of claim 3, wherein
The power cut off means,
A support tube installed in the housing;
A rotation bar inserted into the support tube and rotatably installed, one end side of which faces the inner bar side, and the other end side of which is located on the switch element side of the control unit;
A support plate formed on one end surface of the rotation bar facing the inner bar side and having a larger diameter than the inner bar and positioned outside the support tube;
It is formed at the position of the edge of the support plate, when the mode selection member is located in the automatic mode is in contact with the outer circumferential surface of the inner bar outside the recessed groove and when the mode selection member is located in the lock mode bottom of the recessed groove A contact protrusion for rotating the rotary bar while lifting in contact with the surface;
Limit switch in the switch element is formed on the other end side of the rotation bar and rotates together with the rotation bar, the control unit to cut off the power supplied to the motor when the mode selection member is located in the lock mode Pressing press;
And an elastic member for returning the rotating bar to an initial state. The method of claim 4, wherein
The bracket, on which the parts of the control unit are installed, is supported with a connecting bar which is rotated by the rotating bar,
A non-circular coupling hole is formed at the other end surface of the rotating bar, and one end side of the connection bar is formed in a shape corresponding to the coupling hole to be inserted into the coupling hole.
And the pressing piece is formed at the other end of the connecting bar. The method of claim 4, wherein
The operation unit,
A drive shaft which is coupled to one end of the valve and is coupled to the other end of the handle to be rotatably installed, and to elevate the valve while rotating by a driving force of the motor or a force by which the operator turns the handle;
Installed in the drive shaft, the driving force of the motor is transmitted to the drive shaft when the automatic mode is selected by the mode selection member, and the force acting on the handle is transmitted to the drive shaft when the manual mode is selected. A plurality of clutches to selectively connect / block;
An electric motor valve manipulator having a clutch yoke to move any one of the plurality of clutches while moving by the mode selection member so that the force acting on the handle in the manual mode is transmitted to the drive shaft. . The method according to claim 6,
And when the mode selection member is positioned in the lock mode, power between the handle and the drive shaft is cut off. delete

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