KR102212645B1 - Switchgear display device of breaker gas valve - Google Patents

Abstract

The present invention relates to an opening and closing display device of a circuit breaker gas valve, comprising: a clamp body (110) which is mounted between a valve body (11, 21) and a valve handle (15, 25) of a gas valve (10, 20), while being mounted on a shaft portion (13, 23) on which a shaft of the valve handle (15, 25) is mounted and formed in a separated cylindrical shape to surround the shaft portion (13, 23); a piezoelectric element switch (120) provided on the upper surface of the clamp body (110), pressed when the valve handle (15, 25) is operated to be closed and released when the valve handle (15, 25) is operated to be opened such that the opening and closing of the valve handle (15, 25) can be detected; and a display unit (130) displaying the closing operation and the opening operation state of the valve handle (15, 25) to the outside by forming a circuit with the piezoelectric element switch (120). The present invention makes it possible to easily check the opening and closing of the gas valve visually by being mounted on the gas valve, thereby preventing human errors occurring in the process of checking the gas valve by rotating the gas valve directly in the opposite direction to check whether the gas valve is opened or closed, and preventing power facility accidents caused by misunderstanding opening and closing directions.

Description

Breaker gas valve opening/closing display device {SWITCHGEAR DISPLAY DEVICE OF BREAKER GAS VALVE}

The present invention relates to a breaker gas valve open/close display device, and more particularly, to a breaker gas valve open/close display device that can easily check whether the breaker gas valve is opened or closed on site.

In general, when a failure occurs in the power system, a circuit breaker is used to cut off the fault current and protect the power equipment.

The circuit breaker extinguishes the arc by compressing the insulating gas to a very high pressure and injecting it directly into the arc when an arc occurs due to a fault current while the insulating gas is filled with high pressure inside.

A gas pipe is connected to supply insulating gas to the circuit breaker, and a gas valve that opens and closes the gas passage is mounted on the gas pipe.

However, as shown in Fig. 1, the conventional circuit breaker gas valve is located in a location out of reach or invisible to the operator, so that a person directly boards the breaker to check whether it is opened or closed, so that it is necessary to climb the circuit breaker under pressure. It is difficult to guarantee the safety of workers due to the burden.

In addition, the conventional breaker gas valve has a structure that makes it difficult to visually check the open/closed state depending on the type of valve, so the procedure of directly manipulating the valve to check is performed.However, power such as explosion and power failure due to the mistake of the operator Personal accidents such as accidents and electric shocks often occur.

Moreover, in the case of a gate valve and a ball valve used as a conventional breaker gas valve, the open state of the valve cannot be visually recognized, and in the case of the gate valve, the open and closed states may be mistaken in reverse.

Therefore, it is a hassle to operate the gas valve in the desired direction (open or closed) after checking the opening and closing direction by directly operating it in the opposite direction from the current state (closed or open).

Patent Document 1: Registered Utility Model Publication No. 0426006 (registered on September 1, 2006)

It is an object of the present invention to be easily mounted on a gas valve of an existing circuit breaker to indicate whether the gas valve is open or closed, so that the operator can easily check whether the gas valve mounted on the circuit breaker is opened without boarding the circuit breaker being pressurized. It is to provide a breaker gas valve opening and closing display device.

According to the features of the present invention for achieving the above object, the present invention is mounted between the valve body of the gas valve and the valve handle, and is mounted on the shaft portion on which the shaft of the valve handle is installed, and surrounds the shaft portion. A clamp body formed in a cylindrical shape that can be separated so that it is provided on the upper surface of the clamp body, and is pressed when the valve handle is closed and is released when the valve handle is opened to detect the opening and closing of the valve handle. And a display unit forming a circuit with the piezoelectric element switch to externally display a closing operation and an open operation state of the valve handle.

The clamp body forms a cylindrical shape by being combined with a first body having a semicircular first gripping groove formed to surround a part of the shaft portion and the first body, and corresponding to the first gripping groove so as to surround the rest of the shaft portion A state in which a second body having a semicircular second gripping groove formed thereon, a hinge portion for connecting the first body and the second body, and separating the first body and the second body by mutual rotation, and the first body and the second body in a cylindrical shape It includes a fixing means for fixing the.

The fixing means includes at least one permanent magnet or metal piece embedded in a portion of the first body facing the second body, and a permanent magnet of the first body or a portion of the second body facing the first body. It includes a built-in metal piece or a permanent magnet to be attached to the metal piece.

A rubber gripping band is attached to the first gripping groove and the second gripping groove for intimate contact with the shaft portion.

The piezoelectric device switch has a shape that protrudes from an upper surface of the clamp body, forms a curved mountain, and has a flat pressing portion on the upper surface.

The display unit includes a closing LED lamp that is lit when the valve handle is closed and an open LED lamp that is lit when the valve handle is opened.

When the voltage generated by pressing the piezoelectric element switch and the contact a connecting DC power to the closed display LED lamp and the b contact connecting DC power to the open display LED lamp is applied, the contact a closes the closed display. And a DC relay that turns on the LED lamp and closes the b contact when the voltage is cut off by releasing the push of the piezoelectric element switch to turn on the open indicator LED lamp.

The closed display LED lamp and the open display LED lamp are provided on the outer surface of the clamp body.

The closed indication LED lamp and the open indication LED lamp are provided on a circuit breaker operation panel of a circuit breaker connected to the gas valve on which the clamp body is mounted.

The DC power is provided on the circuit breaker operation panel of the breaker.

The gas valve is a gate valve, and when the valve handle is rotated in the closing direction, the shaft of the valve handle is lowered, pressing the piezoelectric element switch of the clamp body mounted on the shaft, and voltage is generated.

The gas valve is a ball valve, and when the valve handle is rotated in a closed direction, a latch provided at an end of the valve handle presses the piezoelectric element switch and voltage is generated.

The present invention is easily mounted on a gas valve of a circuit breaker that is already installed and operated, and has an opening/closing indication function, so that the operator can easily check the opening and closing of the gas valve with the naked eye. It is possible to directly check whether the valve is opened or closed, which has a useful effect on the safety of the operator.

In addition, according to the present invention, it is possible to check whether the gas valve is opened or closed by lighting of red and blue colored lamps, thereby preventing human error that conversely mistaken whether the gas valve is opened or closed.

In addition, the present invention has the effect of contributing to a stable power supply by improving the reliability of the operation of the circuit breaker and improving the reliability of the operation of the circuit breaker, as it can be checked in a short time on the operation panel of the circuit breaker without directly traversing and checking whether numerous valves installed in the circuit breaker have.

1 is a photo showing a 22.9kV circuit breaker (a) and a 154kV circuit breaker (b)
2 is a photograph showing a gate valve (a) and a ball valve (b)
3 is a conceptual diagram showing a breaker gas valve opening and closing display device according to an embodiment of the present invention.
Figure 4 is a plan view of Figure 3;
5 is a plan view showing a state in which the clamp body of FIG. 3 is separated into a first body and a second body.
6 is a circuit wiring diagram for explaining the principle of operation of the embodiment of the present invention.
7 is a view showing a state in which an embodiment of the present invention is mounted on a gate valve.
8 is a view showing a state in which an embodiment of the present invention is mounted on a ball valve.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The breaker gas valve opening/closing display device of the present invention has a structure that can be easily mounted on a gas valve of a breaker that is already installed and operated, and detects whether the gas valve is opened or closed, and displays it to the outside. Referring to FIG. 2, the gas valves 10 and 20 include a gate valve 10 and a ball valve 20.

For convenience of explanation, the operation structure of the gate valve 10 and the ball valve 20 will be briefly described.

In the gate valve 10, the shaft 16 of the valve handle 15 installed on the shaft portion 13 of the valve body 11 moves vertically with respect to the valve body 11 as the valve handle 15 rotates. It has a structure to open and close the flow path (11a) of the body (11). The ball valve 20 rotates a ball (not shown) at the axial end of the valve handle 25 installed on the shaft 23 of the valve body 21 as the valve handle 25 rotates. It has a structure to open and close the flow path 21a.

Solenoids and electric valves may be applied to gas valves to detect whether the gas valve with the above structure is opened or closed, but in the case of solenoids and electric valves, the cost is excessive because the existing installed and operated gas valve is removed and installed. It occurs, and installation is almost impossible because all substations and facilities in the country must be accompanied by ceasefire work. Moreover, in the case of solenoids and electric valves, there is no opening/closing function on the valve itself because it is intended for remote operation, and the remote operation opening/closing function is unnecessary due to the characteristics of power facilities.

Therefore, the present invention is characterized in that it is easily mounted on a gas valve of a circuit breaker that is already installed and operated, and has an opening/closing display function so that an operator can easily check the opening and closing of the gas valve with the naked eye.

3 and 4, the breaker gas valve opening/closing display apparatus 100 of the present invention includes a clamp body 110, a piezoelectric element switch 120, and a display unit 130.

The clamp body 110 is mounted between the valve bodies 11 and 21 of the gas valves 10 and 20 of FIG. 2 and the valve handles 15 and 25, and the shaft 16 of the valve handles 15 and 25 It is mounted on the shaft portions 13 and 23 to be installed. The clamp body 110 is formed in a cylindrical shape with one side detachable to surround the shaft portions 13 and 23.

The clamp body 110 forms a cylindrical shape by combining the first body 111 and the second body 112.

The first body 111 has a semicircular first gripping groove 111a to surround a part of the shaft portion of the gas valve. The second body 112 is combined with the first body 111 to form a cylindrical shape, and a semicircular second gripping groove 112a corresponding to the first gripping groove 111a is formed to surround the rest of the shaft portion. . When the first body 111 and the second body 112 are coupled, the first gripping groove 111a and the second gripping groove 112a form a circular gripping hole 110a for gripping the shaft portion.

A rubber gripping band 118 is attached to the first gripping groove 111a and the second gripping groove 112a to make close contact with the shaft portion. The clamp body 110 attaches a rubber gripping band 118 to the first gripping groove 111a and the second gripping groove 112a so that both the gate valve and the ball valve are compatible. The rubber gripping band 118 has elasticity so that it is possible to mount the clamp body 110 on the shaft parts 13 and 23 even if the thickness of the shaft parts 13 and 23 are different like the gate valve and the ball valve.

The first body 111 and the second body 112 are connected by a hinge part 113 and one side can be separated by mutual rotation based on the hinge part 113. The hinge part 113 allows the first body 111 and the second body 112 to be coupled and separated from each other by rotation. The shape of the hinge part 113 is formed in a ring shape connecting the first body 111 and the second body 112, but is not limited thereto and various known shapes may be employed.

It includes a fixing means for fixing the state in which the first body 111 and the second body 112 are combined in a cylindrical shape. The fixing means is at least one permanent magnet or metal piece embedded in a portion of the first body 111 facing the second body 112, and a portion of the second body 112 facing the first body 111 It includes a metal piece or a permanent magnet embedded in a corresponding position to be attached to the permanent magnet or the metal piece of the first body 111.

In the embodiment, two permanent magnets 116 are embedded in the first body 111 and two metal pieces 117 are embedded in the second body 112 and may be attached to each other. The permanent magnet 116 and the metal piece 117 facilitate the coupling and separation of the first body 111 and the second body 112.

The piezoelectric element switch 120 is provided on the upper surface of the clamp body 110. The piezoelectric element switch 120 is pressed and pressurized when the valve handles 15 and 25 are closed, and is released when the valve handles 15 and 25 are opened, so that the opening and closing of the valve handles 15 and 25 can be sensed. do.

The piezoelectric element switch 120 is pressed by the valve handles 15 and 25 when the valve handles 15 and 25 are closed to generate a voltage, and the generated voltage may operate the display unit 130. In an embodiment, the piezoelectric device switch 120 has a shape that protrudes from the upper surface of the clamp body 110, forms a curved mountain, and has a flat pressing portion 120a on the upper surface.

In the piezoelectric element switch 120, the curved mountain shape is to allow the latch of the valve handle to naturally cross the curved mountain when applied to a ball valve to naturally press the flat pressed portion 120a.

The display unit 130 forms a circuit with the piezoelectric element switch 120 to detect a closing operation and an open operation state of the valve handle and display it to the outside.

The display unit 130 includes a closing LED lamp 131 that is lit when the valve handle is closed, and an open LED lamp 132 that is lit when the valve handle is opened. The closed-indicating LED lamp 131 and the open-indicating LED lamp 132 are provided on the outer surface of the clamp body 110 so that it is easy to check whether the gas valve is opened or closed with the naked eye without going up to the operator breaker. For example, the closed display LED lamp 131 is lit in red, and the open indication LED lamp 132 is lit in blue, so that it is easier to check whether the gas valve is opened or closed due to a color difference.

4 and 5, the clamp body 110 has a structure in which the first body 111 and the second body 112 are separated by rotation based on the hinge part 113, and the first The permanent magnet 116 embedded in the body 111 and the metal piece 117 embedded in the second body 112 are attached by magnetic force to firmly couple the first body 111 and the second body 112 to each other It has a structure that can be easily separated by applying an external force. At least one of the permanent magnets 116 and the metal pieces 117 are embedded to correspond to each other so that the first body 111 and the second body 112 can be more firmly coupled.

As shown in FIG. 6, the circuit 140 for operating the display unit 130 includes a contact point 142 connecting the DC power supply 141 to the closed display LED lamp 131, and the open display LED lamp 132. And a DC relay 145 that opens and closes the b contact 143 and the a contact 142 and b contact 143 for connecting the DC power 141 to the DC power supply 141.

The DC power supply 141 may be a battery provided inside the clamp body 110 or may be a battery provided on the circuit breaker operation panel 3 of the circuit breaker 1.

The a contact 142 and the b contact 143 are open/close switches. When a voltage is generated when the piezoelectric element switch 120 is pressed, the DC relay 145 closes the a contact 142 with this voltage to light the closed indication LED lamp 131, and when the piezoelectric element switch 120 is pressed, When it is released and the voltage is cut off, the b contact 143 is closed to light the open indication LED lamp 132.

The closed display LED lamp 131 and the open display LED lamp 132 are provided on the outer surface of the clamp body 110 so that the operator can easily check it with the naked eye.

In addition, the closed display LED lamp (131a) and the open display LED lamp (132a) of the circuit breaker 1 connected to the gas valve (10 in Figure 6 and 20 in Figure 7) the clamp body 110 is mounted. It may be additionally provided on the circuit breaker operation panel (3).

When additionally provided with a closing indicator LED lamp (131a) and an open indicator LED lamp (132a) on the circuit breaker operation panel (3) of the circuit breaker (1), the operator may use a closed indicator LED lamp ( 131a) and the open indication LED lamp 132a can be easily checked whether the gas valves 10 and 20 are opened or closed.

The closing display LED lamp 131a and the open display LED lamp 132a additionally provided on the circuit breaker operation panel 3 of the circuit breaker 1 are the circuit of the wiring provided with the contact a 142 and the contact b 143, respectively. It is connected to the circuit of the provided wiring and operates in conjunction with the operation of the DC relay 145 to open and close the a contact 142 and the b contact 143. Accordingly, the closing indicator LED lamp 131a and the open indicator LED lamp 132a provided on the circuit breaker operation panel 3 are the closed indicator LED lamp 131 and the open indicator LED lamp 132 provided on the outer surface of the clamp body 110. ) Can be operated in the same way.

In the embodiment, when the piezoelectric element switch 120 is pressed, a voltage is generated and power is supplied to the DC relay 145. Then, the DC relay 145 closes the a contact 142 and opens the b contact 143 to turn on the closed LED lamps 131 and 131a, and turns off the open LED lamps 132 and 132a. In addition, when the force applied to the piezoelectric element switch 120 disappears, power to the DC relay 145 is cut off. Then, the b contact 143 is closed and the a contact 142 is opened, so that the closed indication LED lamps 131 and 131a are turned off, and the open indication LED lamps 132 and 132a are turned on.

That is, when the power is supplied, the DC relay 145 closes the a contact 142 and opens the b contact 143 to indicate that the gas valve is closed, turns on the red closed indicator LED lamps 131 and 131a, and turns on the blue open indicator LED lamp. (132,132a) is turned off and displayed.

7 is a view showing a state in which the gas valve opening/closing display device of the present invention is mounted on a gate valve.

As shown in FIG. 7, the gas valve 10 is a gate valve, and the gas valve opening/closing display device 100 is mounted between the valve body 11 and the valve handle 15 of the gate valve 10, It is mounted on the shaft portion 13 on which the shaft 16 of the valve handle 15 is installed.

When the valve handle 15 is rotated in the closed direction, the gas valve opening/closing display device 100 mounted on the gate valve 10 lowers the shaft 16 of the valve handle 15 and the clamp body mounted on the shaft 13 The piezoelectric element switch 120 of 110 is pressed.

More specifically, when the valve handle 15 is turned in the closed direction, the shaft 16 of the valve handle 15 is lowered, and the piezoelectric element switch 120 is pressed by the operation to generate a voltage and the DC relay 145 Power is supplied to. When power is supplied to the DC relay 145, the a contact 142 is attached, so the red closed indication LED lamp 131 is turned on and the gas valve 10 is closed.

When the valve handle 15 is turned to open in the opposite direction, the piezoelectric element switch 120 pressed while the shaft 16 of the valve handle 15 rises is restored and the power is cut off. Since the power is cut off to the DC relay 145 as well, the b contact 143 is attached, so the blue open indicator LED lamp 132 is turned on to indicate the open state of the gas valve 10.

8 is a view showing a state in which the gas valve opening/closing display device of the present invention is mounted on a ball valve.

As shown in FIG. 8, the gas valve 20 is a ball valve, and the gas valve opening/closing display device 100 is mounted between the valve body 21 and the valve handle 25 of the ball valve 20, The shaft of the valve handle 25 is mounted on the shaft 23 to be installed.

In the gas valve opening/closing display device 100 mounted on the ball valve 20, when the valve handle 25 is rotated in the closed direction, a latch 27 provided at the end of the valve handle 25 opens the piezoelectric element switch 120. It is pressed and a voltage is generated.

More specifically, when the valve handle 25 is rotated in the locking direction of the ball valve 20, the latch 27 at the end of the valve handle 25 presses the piezoelectric element switch 120, and voltage is generated to generate DC Power is supplied to the relay 145. When power is supplied to the DC relay 145, the a contact 142 is attached, so the red closed indicator LED lamp 131 is turned on to indicate the closed state of the gas valve 20.

When the valve handle 15 is turned to open in the opposite direction, the piezoelectric element switch 120 pressed by the latch 27 is restored and the power is lost, and the power to the DC relay 145 is cut off and the b contact 143 is Since it is attached, the open state of the gas valve 20 is displayed while the blue LED lamp 132 is turned on.

When both types of gas valves (10, 20) are in the open state of the gas valves (10, 20), the power is cut off to the DC relay 145, the b contact 143 is closed, and the DC power 141 of the circuit breaker operation panel is turned off. Through the blue open indication LED lamp 132 is always lit.

The above-described gas valve opening/closing display device 100 is connected in parallel with the circuits of the closed display LED lamp 131 and the open display LED lamp 132 to display the closed LED lamp 131a and the open display LED on the circuit breaker operation panel 3. When additional lamps 132a are installed, the opening and closing status of all gas valves for each part such as #1, #2 BUS, #1, #2 DS (breaker) and CB (breaker) installed in the circuit breaker (1) As it can be checked in the aggregate, it is possible to considerably reduce the working time of the operator.

In addition, the operator can turn on and off the gas valves 10 and 20 by turning on or off the closing indicator LED lamp 131a and the open indicator LED lamp 132a installed on the circuit breaker operation panel 3 without boarding the circuit breaker under pressure. By checking whether or not to open or close, it is possible to prevent human accidents and power outage accidents, and shorten the instantaneous time of equipment for workers to shorten the work process time and ensure the stability of the equipment.

The present invention has been disclosed in the drawings and the specification, the best embodiments. Here, specific terms have been used, but these are only used for the purpose of describing the present invention, and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, the present invention will be understood by those of ordinary skill in the art that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true scope of the technical rights of the present invention should be determined by the technical idea of the appended claims.

1: circuit breaker 10,20 gas valve
11, 21: valve body 11a, 21a: flow path
13,23: shaft portion 15,25: valve handle
16, 26: shaft of the valve handle 27: catch
100: gas valve opening and closing display device
110: clamp body 110a: gripping hole
111: first body 111a: first gripping groove
112: body 112a: second gripping groove
113: hinge part 115: fixing means
116: permanent magnet 117: metal piece
118: rubber gripping band 120: piezoelectric element switch
121a: pressing portion 130: display portion
131,131a: LED lamp for closing indication 132,132a: LED lamp for opening indication
140: circuit 141: DC power
142: contact a 143: contact b
145: DC relay

Claims (12)

A clamp body mounted between the valve body of the gas valve and the valve handle, mounted on a shaft portion on which the shaft of the valve handle is installed, and formed in a detachable cylindrical shape to surround the shaft portion;
A piezoelectric element switch provided on an upper surface of the clamp body and configured to be pressed when the valve handle is closed and released when the valve handle is opened to detect opening and closing of the valve handle; And
And a display unit forming a circuit with the piezoelectric element switch to externally display a closing operation and an open operation state of the valve handle,
The clamp body
A first body having a semicircular first gripping groove formed to surround a portion of the shaft portion;
A second body coupled to the first body to form a cylindrical shape and having a semicircular second gripping groove corresponding to the first gripping groove so as to surround the rest of the shaft portion;
A hinge part for connecting the first body and the second body and separating them by mutual rotation; And
The first body and the second body are provided with a fixing means for fixing a cylindrically coupled state, and a rubber gripping band for intimate contact with the shaft is attached to the first gripping groove and the second gripping groove, ,
The fixing means
At least one permanent magnet or metal piece embedded in a portion of the first body facing the second body; And
The second body has a metal piece or a permanent magnet built in so as to be attached to the permanent magnet of the first body or the metal piece at a portion facing the first body,
The display unit
A closing LED lamp that is lit when the valve handle is closed; And
Including an open indication LED lamp that is lit when the valve handle is opened,
The circuit is
A contact for connecting DC power to the closed indication LED lamp;
B contact for connecting DC power to the open display LED lamp; And
When the voltage generated by the pressing of the piezoelectric element switch is applied, the a contact is closed to turn on the closed indicator LED lamp, and when the voltage is cut off due to the depression of the piezoelectric element switch is released, the b contact is closed to light the open indication LED lamp. A breaker gas valve opening/closing display device including a DC relay to let. delete delete delete The method according to claim 1,
The piezoelectric element switch
A breaker gas valve opening/closing display device having a shape that protrudes from an upper surface of the clamp body, forms a curved mountain, and has a flat pressing portion on the upper surface. delete delete The method according to claim 1,
The closing display LED lamp and the open display LED lamp is a breaker gas valve opening and closing display device provided on the outer surface of the clamp body. The method according to claim 1,
The closing display LED lamp and the open display LED lamp are provided on a circuit breaker operation panel of a circuit breaker connected to the gas valve on which the clamp body is mounted. The method according to claim 1,
The DC power is a breaker gas valve opening and closing display device provided on a breaker operation panel of the breaker. The method according to claim 1,
The gas valve is a gate valve,
When the valve handle is rotated in the closing direction, the shaft of the valve handle is lowered and the piezoelectric element switch of the clamp body mounted on the shaft is pressed, and voltage is generated. The method according to claim 1,
The gas valve is a ball valve,
When the valve handle is rotated in a closing direction, a latch provided at an end of the valve handle presses the piezoelectric element switch and a voltage is generated.

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