KR20110050927A - Safety valve apparatus - Google Patents

Abstract

PURPOSE: A safety valve device is provided to prevent explosion and accidents caused by the malfunction of a valve or the leakage of flammable or harmful gases. CONSTITUTION: A safety valve device comprises a connector(100), a valve body(200), a guide member(500), an elevating member(300), an opening/closing member(400), and an actuating rod(600). The connector has an inlet path(110) and an outlet path(120) connected through a through hole(130) and is connected to a pipe in which fluid flows. The valve body is inserted in the connector from one end thereof and has an elevation path(211) facing the through hole. The guide member has a vertical transfer path(510) and is fixed to the top of the elevation path. The elevating member is arranged in the lower side of the elevation path to slide along the elevation path. The opening/closing member is installed on the bottom of the elevating member to open and close the through hole. The actuating rod is coupled to the elevating member and installed in the transfer path to slide along the transfer path.

Description

Safety valve apparatus

The present invention relates to a safety valve device, and more particularly, to ensure the operation reliability even when the voltage applied to the coil body is low, and fluid leakage regardless of whether the valve operation of the opening and closing and whether or not assembly error occurs The present invention relates to a safety valve device capable of completely blocking the pressure and improving the response speed of the closing operation of the valve.

In general, the safety valve device is a valve device that operates to automatically shut off the flow of fluid in order to prevent additional accidents due to fluid leakage in the event of an accident or a fluid leakage in a fire.

Such a safety valve device is automatically operated by a signal transmitted by a gas detector or a fire alarm to cut off the supply of fluid. The solenoid valve method is mainly used to operate by the signal.

On the other hand, such a safety valve device is cut off the supply of the fluid while the current supplied to the solenoid even in the event of power failure, so in this case is provided with a working rod that is physically elevated so that the user can apply a manual operation. The user may manually implement fluid supply and shutoff by manually lifting this actuation rod.

This operating rod is also used by the inspector to test the normal operation, and also serves to operate a separate switch unit provided to check whether the actual supply of fluid. That is, the switch unit is provided on the upper side of the operating rod, and is pressed or released by the operating rod to move up and down, thereby determining whether the operation is performed by the switch unit.

1 and 2 are sectional views showing such a conventional safety valve device.

Conventional safety valve device, the body 10 is formed in the inlet passage 11 and the outlet passage 12 communicated by the passage hole 13, the elevating body 20 which is elevated in the elevating passage 14 of the body 10 ), The opening and closing member 30 fixedly coupled to the lower portion of the elevating body 20 to open and close the passage hole 13, and installed on the conveying path 41 of the guide member 40 fixed to the elevating path 14. The nose that forms magnetism in the lifting body 20 so that the lifting body 20 can be lifted by the interaction with the operating rod 50 and the permanent magnet 61 coupled to the opening 20 is opened. An elastic member for closing the passage hole 13 by lowering the integral body 60, the cover body 70 surrounding and protecting the outer circumference of the coil body 60, and the opening / closing member 30 raised by the coil body 60. It consists of 80.

1 illustrates a state in which a passage hole 13 is opened to supply fluid, and a current is supplied to the coil body 60 to form a magnet in the lifting body 20, and a permanent magnet 61 and As the attraction occurs due to the interaction of the lifting body 20, the opening and closing member 30 and the operating rod 50 is raised, the passage hole 13 is opened. Accordingly, the fluid flows into the inflow path 11, passes through the passage hole 13, and is supplied to the outflow path 12.

At this time, a portion of the fluid may be partially transported along the space between the transport path 14 and the lifting body 20, but is sealed by the rubber material diaphragm 51 installed on the working rod 50, the fluid is external Leakage is prevented.

As shown in FIG. 2, while the supply of current to the coil body 60 is blocked, the elevating body 20, the opening and closing member 30, and the operation rod 50 are lowered by the elastic member 80 to pass through the hole ( When 13) is closed, the fluid does not pass through the passage hole 13, at which time the diaphragm 51 of the actuating rod 50 is also lowered while still maintaining a closed state, thereby preventing leakage of the fluid.

However, as the diaphragm 51 moves up and down, not only the resistance force is formed in the direction opposite to the lifting direction of the operation rod 50 by the friction force applied to the side surface of the diaphragm 51, but the pressure of the fluid is always applied to the diaphragm 51.

Therefore, in the conventional safety valve device, when the voltage applied to the coil body 60 is unstable and low, the low voltage operation failure that does not operate because the lifting body 20 is not driven up and down due to the resistance and the pressure of the fluid. There is a big problem that occurs.

In addition, as the diaphragm 51 is repeatedly raised and lowered, the outer peripheral portion is damaged by the friction force applied to the side thereof, and thus the fluid may be leaked.

In addition, there is a problem in that the lifting speed of the lifting body 20 and the opening / closing member 30 is slowed due to the resistance applied to the diaphragm 51 and the pressure of the fluid, thereby lowering the valve response speed.

In order to solve the problems as described above, the present invention has a structure that does not generate a resistance to the elevating drive of the lifting body, the opening and closing member and the operating rod, and is a space in which the operating rod is elevated regardless of whether assembly errors occur It is an object of the present invention to provide a safety valve device capable of completely sealing the upper and lower sides of a conveying path, and capable of being operated quickly so that the valve response speed at the time of closing is improved.

In order to solve the above problems, the safety valve device according to an embodiment of the present invention, the inlet and outlet passages communicated by the passage hole is formed therein, the connecting body connected to the pipeline through which the fluid flows ; A valve body having one end inserted into the connecting body and having a lifting path penetrating up and down to face the passage hole therein; A guide member penetrating up and down is formed therein, and fixedly installed at an upper portion of the hoistway; A lifting body disposed below the lifting path to be slidably movable along the lifting path; An opening and closing member installed at a lower end of the lifting body to open and close the through hole; And an operating rod coupled to the lifting body and installed in the transporting path to be slidably moved along the transporting path, when the lifting body is moved by sliding movement. The sealing member is installed at any one of the upper end of the lifting member and the lower end of the guide member, the second sealing member for sealing the upper end of the transfer path when the lifting member is moved by sliding the lowering the operation rod and the It is installed in any one of the upper end of the guide member.

In the safety valve device, the lower end portion of the elevating body is formed in a plate shape having a predetermined thickness, and the opening and closing member has a lower end portion of the elevating body inserted into the groove portion formed on the upper surface with respect to the elevating body. It is installed to be elevated, and the inlet of the groove portion may be formed a locking projection to prevent the lower end of the lifting body is separated from the groove portion.

The safety valve device may include a driving unit including a coil body installed inside the valve body to surround the lifting path and driving the lifting body and the operation rod up and down by interacting with a magnetic body fixed to the valve body; It may further include.

The driving unit for driving the lifting body and the operation rod up and down, may further include a first elastic member is installed between the opening and closing member and the valve body for pressing the opening and closing member downward.

The driving unit may further include a second elastic member installed on the operation rod to press the operation rod downward.

The first elastic member may be formed of a conical compression spring.

The safety valve device, the first sealing protrusion of the form surrounding the lower side of the transfer path to be in close contact with or separated from the first sealing member is installed in the other of the upper end of the lifting body and the lower end of the guide member, the second The second sealing protrusion may be installed at the other one of the upper end of the operation rod and the guide member so as to surround the upper side of the transfer path to be in close contact with or separated from the sealing member.

According to such a safety valve device of the present invention, in order to open and close the passage hole, the upper side of the conveying path is sealed by the second sealing member in the state where the lifting body and the operating rod are raised, and the lower side of the conveying path is the first in the lowered state. Due to the structure that the fluid leakage is blocked by the sealing member, there is no resistance that prevents the elevating body and the lifting rod from lifting. Therefore, even when the lifting force of the lifting body is weak due to the low voltage applied to the coil body, the operation reliability is improved. It can be improved.

In addition, due to the structure in which fluid leakage is blocked by the first and second sealing members, fluid leakage through the space between the inner circumferential surface of the transfer path and the outer circumferential surface of the working rod can always be completely blocked.

Accordingly, when the fluid is highly flammable LNG, LPG, or a fluid harmful to a human body, it is possible to prevent explosion and safety accidents caused by valve malfunction or leakage of these fluids.

In particular, the opening member is installed in the groove portion of the opening and closing member is inserted into the lower end of the lifting member is provided so that the opening and closing member can be transferred to the lifting body, the first elastic member for sealing the passage hole by lowering the opening and closing member In addition, the second elastic member for lowering the operating rod provided with the second sealing member to close the second sealing member to the upper side of the transfer path is installed, the assembly error in the assembly length of the opening and closing member, the lifting body, and the operating rod Even if it occurs, it is possible to stably seal the upper side of the transfer path to the second sealing member.

Therefore, due to the assembly error of the opening and closing member, the lifting body and the operation rod can be closed to the passage hole or the leakage of the fluid due to incomplete sealing on the upper side of the transfer path.

In addition, the first elastic member, which is provided with a conical compression spring in which the elastic force rises by a linear increase or more as the displacement increases, a strong elastic force acts in case of emergency or inspection, and the lifting body descends quickly, thereby closing the passage hole firmly. can do. That is, the response speed of the valve can be improved.

In addition, the first and second sealing protrusions protrude from the guide member so as to surround the lower side and the upper side of the conveying path, and are strongly adhered to the first and second sealing members, respectively. The sealing property of the second sealing member can be further improved.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Safety valve device according to the present invention is a valve that operates to automatically shut off the flow of fluid in order to prevent the occurrence of additional accidents due to fluid leakage in the event of an accident due to fluid leakage or a fire, the manual operation and inspection or actual The valve device is provided with a lifting operation rod protruding to the outside depending on whether the operation to check the operation.

Hereinafter, with reference to the accompanying Figures 3 to 6, the configuration and effect of the safety valve device according to a preferred embodiment of the present invention will be described in detail. Safety valve device according to a preferred embodiment of the present invention, the connecting body 100, the valve body 200, the lifting body 300, the opening and closing member 400, the guide member 500, the operating rod 600, the cover A sieve 700 and a driving unit 800 are included.

The connecting body 100 is installed in a pipe (not shown) through which the fluid flows, and an inflow path 110 through which the fluid flows in and an outflow path 120 through which the fluid flows out are formed therein. ) And the outlet passage 120 are provided in communication with the passage hole 130.

The valve body 200 is made by combining the first body 210 and the second body 220, and forms the body of the safety valve device.

The first body 210 has a type of tubular shape in which a lower end is fixedly coupled to a fixing hole 140 formed to face the passage hole 130 in the connecting body 100, and a lifting path 211 is formed therein. The fixing hole 140 is provided with an O-ring (OR) to block the fluid leakage to the coupling portion of the connecting body 100 and the first body 210. As such, the structure in which the connecting body 100 and the first body 210 are coupled to form a skeleton of the cross section is roughly '⊥'.

The second body 220 is provided to surround the outer circumference of the first body 210, the coil body 810 of the driving unit 800 to be described later in the space between the inner circumferential surface and the outer circumferential surface of the first body 210 is Is installed. And the upper side of the inside of the second body 220 is provided with a magnetic body 811 made of a permanent magnet or a steel material or the like that can cause interaction with the lifting body 300 is formed magnetic.

The lifting body 300 has a cylindrical shape, is installed inside the lifting path 211 to move up and down along the lifting path 211, and has a magnetic material by the current applied to the coil body 810 to be described later ( Interaction with 811).

A fixing groove 310 is formed on the upper surface of the lifting body 300 to allow the operation rod 600 to be coupled thereto, and a first sealing member 320 is provided to surround the fixing groove 310. The first sealing member 320 is made of a material having elasticity and is strongly adhered to the first sealing protrusion 530 of the lower surface of the guide member 500 which will be described later in the state in which the lifting member 300 is lifted up of the lifting path 211. The fluid flowing into the space between the inner circumferential surface and the outer circumferential surface of the elevating body 300 serves to block the flow into the transport path 510 of the guide member 500.

The lifting body 300, as shown in Figure 3, is provided with a diameter decreases toward the lower end, the lower end has a plate shape having a predetermined thickness. The lower end of the lifting body 300 is installed in the opening and closing member 400.

The opening and closing member 400 is installed at the lower end of the elevating body 300 to close or open the passage hole 130 while elevating together as the elevating body 300 is elevated.

In more detail, the opening and closing member 400 is formed in a wide cover shape when the upper and lower surfaces are closed to cover the passage hole 130 when descending, and open the passage hole 130 when the opening and closing member 400 rises. The groove portion 410 is formed in the center of the upper surface, and the lower end of the lifting member 300 is installed in the lifting member 300 to be inserted into the groove portion 410. At the inlet of the groove 410, a locking protrusion 420 is formed to prevent the lower end of the lifting member 300 from being separated from the groove 410.

Here, the groove part 410 is formed deeper than the thickness of the lower end of the lifting member 300, the lower end of the lifting member 300 in the state that is prevented from being separated from the groove 410 by the locking protrusion 420 410 is provided to be reciprocated by a predetermined height inside. Accordingly, the opening / closing member 400 may be lifted and lifted by the corresponding height with respect to the lifting body 300.

As such, since the opening / closing member 400 may be transferred up and down with respect to the lifting body 300, an assembly error occurs in the length of the assembly of the opening and closing member 400, the lifting body 300, and the operation rod 600. The second sealing member 620 to be able to perform the role of sealing the upper side of the transfer path 510 completely, this will be described in detail with reference to the operation rod 600.

As shown in FIG. 4, when the lifting member 300 is lifted up by having the magnet by the coil body 810, the lower end of the lifting member 300 is caught by the locking protrusion 420. Ascending with the lifting body 300, the passage hole 130 is opened to the fluid supply. At this time, the first elastic member 820 of the driving unit 800 to be described later is compressed while being pressed upward by the opening and closing member 400.

Meanwhile, as shown in FIG. 5, when the current applied to the coil body 810 is released, the lifting force of the lifting body 300 is lost while the lifting body 300 loses its magnetism, and thus the first elastic member is lost. While the elastic force of 820 acts, the opening and closing member 400 is lowered, and the passage hole 130 is closed to block the fluid supply.

The guide member 500 is fixedly installed in the lifting path 211 so that the lower surface thereof may be in close contact with or separated from the first sealing member 320 of the upper surface of the lifting body 300 as the lifting body 300 moves up and down. The transfer path 510 is formed at the center thereof so that the upper and lower surfaces thereof pass through the lifting path 211. The transfer path 510 is a passage where the operating rod 600 can be elevated.

An installation groove 520 is formed on an upper surface of the guide member 500, and the installation groove 520 guides the lifting driving of the operation rod 600, and the second elastic member 830 of the driving unit 800 described later. ) Provides the space where it is located.

Since the transfer path 510 is formed to penetrate from the bottom surface of the installation groove 520 to the bottom surface of the guide member 500, the upper portion and the lower portion of the transfer path 510 may be formed at the center of the bottom surface of the installation groove 520. The lower surface of the guide member 500 becomes a central portion.

The guide member 500 has a first sealing protrusion 530 formed of a material having elasticity while wrapping the lower side of the conveying path 510 on the lower surface thereof, and the conveying path 510 on the bottom surface of the installation groove 520. The second sealing protrusion 540 is formed of a material having an elasticity surrounding the upper side of the.

The first and second sealing protrusions 530 and 540 are in close contact with the first and second sealing members 320 and 620 in accordance with the lifting and lowering of the lifting body 300 and the operation rod 600, thereby providing a transfer path ( The upper and lower sides of the 510 are respectively sealed stably.

The working rod 600 is provided in the shape of a rod, the lower end of which is fixedly coupled to the fixing groove 310 of the lifting body 300 by passing through the transfer path 510, and the upper end of the upper side of the guide member 500. It protrudes outward. The upper end of the operation rod 600 is provided to protrude to the outside of the safety valve device through the through hole 710 of the cover body 700, which will be described later, to be manually operated by the user or to contact a separate switch.

That is, the operation rod 600 is raised when the passage hole 130 is opened to supply fluid, and is lowered when the passage hole 130 is closed so that the fluid supply is blocked. Simultaneously with this, on the contrary, if the passage hole 130 is opened to be supplied with fluid when raised by an external manipulation, the passage hole 130 is closed to be closed when the descending fluid is supplied.

A protrusion 610 having an outer diameter corresponding to the inner diameter of the installation groove 520 is formed at the center of the operation rod 600. When the operation rod 600 is elevated, the protrusion 610 is installed in the installation groove 520. The lifting drive can be stabilized while being guided by, and provides a coupling area so that the second elastic member 830 that provides an elastic force for lowering the operating rod 830 can be coupled to the operating rod 600.

When the operation rod 600 is lowered by the second elastic member 830 on the lower surface of the protruding portion 610, the second sealing unit may be in close contact with the second sealing protrusion 540 to seal the upper side of the transfer path 510. Member 620 is provided.

When the first elastic member 820 lowers the opening / closing member 400, the operation rod 600 is lowered along with the lifting body 300 by the lower end of the lifting body 300 being caught by the locking protrusion 420. The first elastic member 820 is to lower the opening and closing member 400 until the opening and closing member 400 covers the through hole 130 to stop, the opening and closing member 400, the lifting body 300 and the operating rod Although the length of the assembled assembly 600 is different from the design value due to the assembly error, as shown in FIG. 6 regardless of the stoppage of the opening / closing member 400, the second sealing member 620 is the second sealing protrusion 540. The second elastic member 830 lowers the operating rod 600 until it is in close contact with the second elastic member 830.

At this time, the operation rod 600 is coupled to the lifting body 300, the lower end of the lifting body 300 can be lifted and transported in the groove 410 of the opening and closing member 400, the opening and closing member 400 Even if stopped, the lifting body 300 and the operating rod 600 can be further lowered.

The cover body 700 serves to protect the upper side of the guide member 500 and provides a space in which the second elastic member 830 of the driving unit 800 to be described below is provided. In addition, a through hole 710 is formed at the center of the driving rod 600 to protrude to the outside.

The driving unit 800 provides a force for elevating the opening / closing member 400, the lifting body 300, and the operation rod 600. The driving part 800 includes a coil body 810, a first elastic member 820, and a second elastic member 830.

The coil body 810 is formed of a plurality of coils wrapped around the outer circumference of the first body 210, and forms a magnet in the lifting body 300 as a current is applied, so that the lifting body 300 is a magnetic body 811. Interaction with That is, when the magnetic body 811 is a permanent magnet, the upper end of the lifting body 300 induces magnetism to have a different pole from the lower end of the magnetic body 811 so that the attraction force acts between the magnetic body 811 and the lifting body 300. Thereby raising the lifting body 300.

The first elastic member 820 is provided with a conical compression spring, one end having a large diameter is in contact with the first body 210 and the other end having a small diameter is fixed to the opening and closing member 400. The first elastic member 820 is compressed when the opening and closing member 400 ascends as the lifting member 300 rises, and then lowers the opening and closing member 400 by the elastic force when the lifting force of the lifting member 300 is released. To close the passage hole 130.

Since the first elastic member 820 is provided with a conical compression spring, the elastic force generated by the amount of deformation to be compressed increases by more than a linear increase. Therefore, since it has a larger elastic force at the same amount of deformation than a general compression spring, when the lifting force of the lifting member 300 is released, the opening and closing member 400 is lowered more quickly. That is, the responsiveness of the safety valve device in blocking the fluid supply is improved.

The second elastic member 830 has a lower end fixed to the protrusion 610 of the operation rod 600 and the upper end thereof is installed to contact the second cover body 700. Therefore, when the working rod 600 is raised, the compressed rod is lifted, and when the lifting force of the lifting member 300 is released, the working rod 600 is lowered by the elastic force to move the second sealing member 620 to the upper side of the transfer path 510. It is in close contact with the sealing protrusion 540.

In a preferred embodiment of the present invention, the driving unit 800 is provided with a coil body 810 and the first and second elastic members 820, 830, but is not limited to this and various driving methods according to the implementation method of the valve device The element may be applied.

4 to 6, the operation and use of the safety valve device according to a preferred embodiment of the present invention will be described in detail.

First, as shown in FIG. 4, when fluid is supplied, a magnet is formed in the lifting body 300 while a current is applied to the coil body 810, and the lifting body 300 and the magnetic body 811 are mutually formed. As a result of the attraction between the lifting body 300 and the magnetic body 811, the lifting body 300 rises.

Then, the opening and closing member 400 is raised while the locking protrusion 420 is caught at the lower end of the elevating member 300, thereby compressing the first elastic member 820. In addition, the second elastic member 830 is also compressed while the operating rod 600 coupled to the lifting member 300 also rises together.

When the lifting member 300 rises as described above, the first sealing member 320 on the upper surface of the lifting member 300 strongly adheres to the first sealing protrusion 530 below the transfer path 510, thereby The lower side is completely sealed.

Therefore, even if some of the fluid flowing into the inflow path 110 and passing through the passage hole 130 and exited to the outflow path 120 is introduced through the space between the inner circumferential surface of the hoistway 211 and the outer circumferential surface of the elevating body 300. Since the lower side of the transfer path 510 is sealed by the first sealing member 320 and the first sealing protrusion 530, the first sealing member 320 and the first sealing member 530 do not move to the transfer path 510.

Next, when the fluid supply is cut off, the magnetic force formed on the elevating body 300 disappears while the current applied to the coil body 810 is released. Accordingly, the elevating body 300 and the magnetic body elevating the elevating body 300 are removed. The attraction between 811 is released.

Then, as shown in Figure 5, the opening and closing member 400 is lowered by the elastic force to be restored of the first elastic member 820 that has been compressed to cover the passage hole 130. Accordingly, since the fluid cannot pass through the passage hole 130, the supply is blocked.

However, in this state, since the second sealing member 620 is not completely in contact with the second sealing protrusion 540, the upper and lower sides of the conveying path 510 may be opened, so that fluid may leak through the conveying path 510. It is a state.

Thereafter, as shown in FIG. 6, the actuating rod 600 is further lowered by the elastic force to be restored of the second elastic member 830, so that the second sealing member 620 is completely attached to the second sealing protrusion 540. In close contact, the upper side of the transfer path 510 is sealed.

At this time, the lifting body 300 coupled with the operation rod 600 can be moved up and down inside the groove 410, the lower end of the opening and closing member 400 is installed, additionally lowered regardless of the stop state of the opening and closing member 400 Even if there is an assembly error in the assembly of the opening / closing member 400, the lifting body 300, and the operation rod 600, the second sealing member 620 may be sufficiently in contact with the second sealing protrusion 540. You can descend further.

As such, when the second sealing member 620 is tightly adhered to the second sealing protrusion 540 and the upper side of the conveying path 510 is sealed, a part of the fluid is formed on the inner circumferential surface of the conveying path 510 and the operating rod 600. Even if introduced through the space between the outer circumferential surface can not be leaked to the outside of the transport path 510, the leakage of the fluid can be completely blocked.

In a preferred embodiment of the present invention, the second elastic member 830 is provided as a general compression spring, but is not limited thereto, and the first and second elastic members 820 and 830 are provided as compression springs, but are elevated Of course, if the configuration that can lower the sieve 300 is not limited to this.

As can be seen from the structure of the preferred embodiment of the present invention described above, when the lifting member 300, the opening and closing member 400 and the operating rod 600 is elevated, there is a resistance or a pressure of the fluid to prevent the lifting operation. Therefore, even when the driving force is weak, such as when the voltage applied to the coil body 810 is low, the operation reliability can be secured.

Hereinafter, the configuration and operation effects of the safety valve device according to another embodiment of the present invention will be described in detail with reference to FIG. 7. Safety valve device according to another embodiment of the present invention except for the position of the first and second sealing members 320 ', 620' and the first and second sealing protrusions (530 ', 540') The safety valve device according to the preferred embodiment of the configuration, operation and use is similar. Therefore, hereinafter, the first and second sealing members 320 ′ and 620 ′ and the first and second sealing protrusions 530 ′ and 540 ′ of the safety valve device according to another embodiment will be described below. For the rest of the components, the same reference numerals as in the preferred embodiment are used, and detailed descriptions of the configuration, operation, and use state are omitted.

The first sealing member 320 'is provided to surround the lower side of the transfer path 510 on the lower surface of the guide member 500', and the second sealing member 620 'is the bottom surface of the installation groove 520. Is provided to surround the upper side of the conveying path (510).

The first sealing protrusion 530 'which is in close contact with or separated from the first sealing member 320' is formed to surround the fixing groove 310 on the upper surface of the lifting body 300 ', and the second sealing member 620'. The second sealing protrusion 540 ′ which is in close contact with or separated from the bottom of the protrusion 610 ′ of the operating rod 600 ′ is formed.

That is, in the safety valve device according to another embodiment of the present invention, the first sealing member 320 'and the first sealing protrusion 530', the second sealing member 620 'and the second sealing protrusion 540' ) Are respectively provided at positions interchanged with those of the preferred embodiment.

Of course, the present invention is not limited thereto, and the first sealing member 320 'and the first sealing protrusion 530', the second sealing member 620 'and the second sealing protrusion 540' are not limited thereto. Of course, any one of them may be provided so that the position is changed.

As described above, according to the safety valve device according to the present invention, in order to open and close the passage hole 130, the upper side of the transfer path 510 in the state in which the lifting member 300 and the operating rod 600 is raised second The lower side of the transport path 510 is sealed by the sealing member 620 and the lower side of the transport path 510 is closed by the first sealing member 320 in the lowered state, so that the inner circumferential surface of the transport path 510 and the outer circumferential surface of the operation rod 600 are closed. Not only can the fluid leak through the interspace be completely blocked, but also the elevating body 300 and the operating rod 600 are lifted due to the structure in which fluid leakage is blocked by the first and second sealing members 320 and 620. Since there is no resistance that interferes with this, even when the voltage applied to the coil body 810 is low, the operation reliability can be improved.

In addition, the opening and closing member 400 is provided to be moved up and down with respect to the lifting member 300 and the second sealing member 620 is transferred to the transfer path by lowering the operating rod 600 separately from the first elastic member 820 ( By installing the second elastic member 830 in close contact with the upper side, the upper side of the transfer path 510 even if an assembly error occurs in the assembly length of the opening / closing member 400, the lifting body 300, and the operation rod 600. Can be sealed stably.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims. will be.

1 is a cross-sectional view showing an open state of a conventional safety valve device;

2 is a cross-sectional view showing a closed state of a conventional safety valve device;

3 is a cross-sectional view showing a safety valve device according to an embodiment of the present invention;

4 is a cross-sectional view showing a state in which a through hole is opened in the safety valve device according to the preferred embodiment of the present invention;

5 is a cross-sectional view showing a closed state of the passage hole in the safety valve device according to an embodiment of the present invention,

6 is a cross-sectional view showing a safety valve device according to a preferred embodiment of the present invention, in which an operating rod is additionally lowered by a second elastic member and the upper side of the transport path is sealed;

7 is a cross-sectional view showing a safety valve device according to another embodiment of the present invention.

＊ Explanation of symbols for main part of drawing ＊

100: connector 110: inflow path

120: outflow path 130: through hole

140: fixing hole 200: valve body

210: first body 211: hoistway

220: second body 300, 300 ': lifting body

310: fixing groove 320, 320 ': the first sealing member

400: opening and closing member 410: groove

420: locking projection 500, 500 ': guide member

510: transfer path 520: installation groove

530, 530 ': first sealed protrusion 540, 540': second sealed protrusion

600, 600 ': working rod 610, 610': protrusion

620, 620 ': second sealing member 700: cover body

710: through hole 800: driving part

810: coil body 811: magnetic body

820: the first elastic member 830: the second elastic member

OR: O-ring

Claims (7)

An inflow path and an outflow path communicated by a passage hole therein, and a connection body connected to a pipeline through which a fluid flows; A valve body having one end inserted into the connecting body and having a lifting path penetrating up and down to face the passage hole therein; A guide member penetrating up and down is formed therein, and fixedly installed at an upper portion of the hoistway; A lifting body disposed below the lifting path to be slidably movable along the lifting path; An opening and closing member installed at a lower end of the lifting body to open and close the through hole; And And a working rod coupled to the lifting body and installed in the transport path to be slidably moved along the transport path. When the lifting body is moved by sliding movement, the first sealing member for sealing the lower end of the conveying path is installed at any one of the upper end of the lifting body and the lower end of the guide member, the lifting body is moved by sliding movement Safety valve device, characterized in that the second sealing member for sealing the upper end of the transfer path is installed in any one of the upper end of the operation rod and the guide member. The method of claim 1, The lower end of the lifting body is made of a plate shape having a predetermined thickness, The opening and closing member, The lower end of the lifting body is inserted into the groove formed on the upper surface thereof so as to be able to be lifted and lifted with respect to the lifting body. Safety valve device, characterized in that. The method according to claim 1 or 2, A driving unit installed inside the valve body to surround the lifting path and including a coil body driving the lifting body and the operation rod up and down by interacting with a magnetic body fixed to the valve body; Safety valve device characterized in that it further comprises. The method of claim 3, The driving unit for driving the lifting body and the operation rod up and down, A first elastic member installed between the opening and closing member and the valve body to press the opening and closing member downward; Safety valve device characterized in that it further comprises. The method of claim 4, wherein The driving unit includes: A second elastic member installed on the operation rod to press the operation rod downward; Safety valve device characterized in that it further comprises. The method of claim 4, wherein The first elastic member, Safety valve device characterized in that the conical compression spring consisting of. The method according to claim 1 or 2, The first sealing protrusion is formed in the other of the upper end of the lifting member and the lower end of the guide member so as to surround the lower side of the transfer path to be in close contact with or separated from the first sealing member, and close or separate from the second sealing member. Safety valve device, characterized in that the second sealing projection of the shape surrounding the upper side of the conveying path to be installed in the other one of the upper end of the operation rod and the guide member.

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