KR101448117B1 - Selection Valve for Fire Fighting - Google Patents

Abstract

Disclosed is a selection valve for firefighting. According to an embodiment of the present invention, a selection valve for firefighting includes a main body portion (100) having an introduction pipe channel (110), a discharge pipe channel (120), and a blockage pipe channel (130); a blockage rod (300) inserted into the blockage pipe channel (130) to be vertically moved along the blockage pipe channel (130) to open or seal the introduction pipe channel (110) in accordance to the vertical movement; a fastening member (610) mounted at a predetermined distance (d) from a lower end portion of the blockage rod (300), pressing and fixing a first sealing member (620), and having a pressing protrusion portion (611) protruded toward the first sealing member (620); the first sealing member (620) mounted between the lower end portion of the blockage rod (300) and the fastening member (610) and providing sealing force between the blockage rod (300) and the introduction pipe channel (110) when the blockage rod (300) performs the sealing operation; and a fixing member (630) mounted on the lower end portion of the blockage rod (300) to fix the fastening member (610). If the operation state of the blockage rod (300) sealing the introduction pipe channel (110) is maintained and a high-pressure fluid has been supplied to the introduction pipe channel (110), the fastening member (610) is moved by fluid pressure to the lower end portion of the blockage rod (300) by the predetermined distance (d), the first sealing member (620) is pressed further by the movement of the fastening member (610), and the pressed first sealing member (620) provides greater sealing force between the blockage rod (300) and the introduction pipe channel (110).

Description

Selection Valve for Fire Fighting

FIELD OF THE INVENTION The present invention relates to a selection valve for a fire extinguisher, and more particularly, to a selection valve provided with a tightening member having a specific structure to improve the airtightness and extend the service life of a sealing member that maintains airtightness.

As the industry develops, urban buildings are becoming increasingly sophisticated. In response to this trend of increasingly high level, automation of each field according to building management has been continuously carried out. A typical example of automation of high-rise building management is fire prevention and evacuation facilities.

Specifically, the fire prevention and evacuation facility comprises detection means, control means, and evolution means. The sensing means and the evolving means are distributed in multiple layers in each layer of the high-rise building, and the control means is usually installed in the first basement or the second basement and is operated in such a manner that the manager checks it frequently.

A brief overview of the operation and operation of such fire prevention and evacuation facilities is that a fire detector installed at each floor of the building senses smoke or heat and sends a fire signal to a control device located underground.

The control system allows the occupants and users to evacuate by sounding an alarm at each floor of the building when a fire detection signal is input from the detector. The control system then sends an activation signal to the selection valve, which opens the inlet line so that the exhaled liquid, which has flowed through the inlet line, can be discharged to the drain line. The fire extinguishing liquid supplied through the selection valve flows only to the place where the fire occurs, and is injected into the spray head installed in the fire occurrence area, thereby evolving the fire.

In general, the selection valve uses a sealing member to seal and seal the inlet line. A typical example of the sealing member is an O-ring. The selection valve with such a sealing member is subjected to a safety test before it is actually mounted in the field. Specifically, the safety check of the selection valve must meet the requirements of more than 500 repetitive inflow pipe opening and closing operations for US UL certification.

The sealing member of the conventional selection valve is made with an outer diameter somewhat larger than the inner diameter of the inflow conduit to more tightly seal the inflow conduit. Thus, much force is required to close the open selection valve again. Further, due to the somewhat larger outer diameter of the sealing member, there arises a problem that the sealing member is detached or damaged during the safety inspection of the selection valve.

In addition, fatigue failure of the sealing member due to cyclic loading in actual use may occur even if the cellulite valve passed the safety test as described above. The sealing member receiving such a repeated load can not securely seal the inflow pipe at the time of installation in an actual site, and may cause a problem of leakage of the digestive fluid.

Published Utility Model Publication No. 1999-0036284 (published on September 27, 1999)

SUMMARY OF THE INVENTION An object of the present invention is to provide a fire control selection valve capable of improving airtightness and extending the service life of a sealing member that maintains airtightness.

According to an aspect of the present invention, there is provided a selection valve for high-

A selection valve for a fire fighting system mounted on a piping of a fire fighting system,

A main body part (100) having an inlet pipe (110), a discharge pipe (120) and a shutoff pipe (130);

A shut-off bar 300 inserted into the shut-off duct 130 to move up and down along the shut-off duct 130 and to open or close the inflow duct 110 according to the upward and downward movements;

A pressing protrusion 611 mounted on the lower end of the shutting bar 300 at a predetermined distance d and protruding in the direction of the first sealing member 620 by pressing and fixing the first sealing member 620 A tightening member 610;

A first sealing member mounted between the lower end of the shut-off bar 300 and the tightening member 610 and providing a sealing force between the shut-off bar 300 and the inflow line 110 during the closing operation of the shut- member, 620); And

A fixing member 630 attached to a lower end of the shut-off bar 300 to fix the tightening member 610;

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When the shut-off operation of the inlet pipe 110 of the shut-off valve 300 is maintained and the high-pressure fluid is supplied to the inlet pipe 110,

The tightening member 610 moves toward the lower end of the shutting bar 300 by the predetermined distance d by the pressure of the fluid and the first sealing member 620 is further pressed by the movement of the tightening member 610 , The pressurized first sealing member 620 may provide a further increased sealing force between the shut-off rod 300 and the inlet conduit 110.

The selection valve for high-pressure equipment according to one aspect of the present invention,

A flange 200 mounted on the upper end of the shutoff line 130 to close the shutoff line 130 and having a shutoff rod protrusion 220 formed at the center thereof;

A stopper 400 mounted on an upper end of the flange 200 to be rotatable through the first hinge unit 420 and restricting the upward and downward movement of the shutting bar 300, ; And

A control lever (500) is mounted on the upper end of the flange (200) through the second hinge part (520) and rotatably mounted on the upper end of the shutting bar (300) );

As shown in FIG.

In addition, a driving unit for providing a driving force to the rotation operation of the control lever may be additionally mounted on the flange upper end portion.

In this case, the driving unit may be structured to be operated by atmospheric pressure or hydraulic pressure.

According to another aspect of the present invention, the first sealing member may be an O-ring made of a rubber material.

According to another aspect of the present invention, a threaded hole is formed in an upper end of the shut-off bar,

The threaded hole may be further provided with a bolt-shaped pressing member having an outer surface formed with a thread.

According to another aspect of the present invention, at least one second sealing portion is additionally formed on an outer circumferential surface of the shut-

Providing a sealing force between the shut-off bar and the shut-off duct,

A first space portion surrounded by the second sealing portion, the shielding pipe, the flange, and the shut-off bar may be formed.

In this case, the first space portion may have a structure in which the first space portion is connected to the inlet pipe by a by-pass flow path formed in the fixing member and the shut-off bar.

According to another aspect of the present invention, an extension portion protruding from a lower end portion of the shut-off bar is formed at a lower end portion of the shut-off bar, and a tightening member may be attached to the extension portion.

In this case, a third sealing member, which provides a sealing force, may be mounted between the extension and the tightening member.

The present invention can also provide a fire fighting system including at least one fire-fighting selection valve.

INDUSTRIAL APPLICABILITY As described above, the selection valve for a fire according to the present invention has a configuration in which the selection valve is structured to include the shut-off bar, the first sealing member and the tightening member having a specific structure so that the selection valve And it is possible to increase the operational convenience in selection valve safety inspection.

In addition, the fire control selection valve according to one embodiment of the present invention has a structure in which the sealing force is increased by the pressure of the fire extinguishing liquid supplied through the inflow conduit, so that the airtightness can be further improved and the life of the sealing member is significantly Can increase.

Particularly, it is expected to be able to satisfy the test of performance of 500 valves for UL certification, thereby promoting export of products.

In addition, the fire control selection valve according to another embodiment of the present invention can be utilized in fire fighting facilities.

1 and 2 are vertical sectional views of a selection valve for a high-pressure plant according to one embodiment of the present invention.
3 is a vertical sectional view of the main body of the selection valve for high-pressure equipment shown in Fig.
4 is a plan view of the flange of the selection valve for high-pressure equipment shown in Fig.
5 is a side view of the flange of the selection valve for high-pressure equipment shown in Fig.
6 is a plan view of the selection valve for high-pressure equipment shown in Fig.
7 is a sectional view taken along line BB of Fig.
8 is a cross-sectional view taken along line CC of Fig.
9 is a vertical cross-sectional view of the shut-off bar of the selection valve for high-pressure equipment shown in Fig.
10 is an exploded view of Fig.
11 and 12 are partially enlarged views of A and A 'in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited thereto. In the description of the present invention, a detailed description of known configurations will be omitted, and a detailed description of configurations that may unnecessarily obscure the gist of the present invention will be omitted.

1 and 2 show a vertical cross-sectional view of a selection valve for a high-pressure installation according to one embodiment of the present invention.

Referring to these drawings, the selection valve 800 according to the present embodiment may include a main body 100, a flange 200, a shut-off bar 300, a stopper 400, and a control lever 500. A pressing member 640 is mounted on the upper portion of the shut-off bar 300 and a first sealing member 620, a fastening member 610 and a fixing member 630 may be further mounted on the lower portion of the shut- have.

The main body 100 may include an inflow conduit 110, a discharge conduit 120 and a shutoff conduit 130. The flange 200 may be mounted on the upper end of the shutoff conduit 130, 130, and a shut-off bar protrusion 220 is formed at the center thereof.

The shutoff rod 300 can be inserted into the shutoff line 130 and move up and down along the inner diameter of the shutoff line 130. The shutoff rod 300 can be opened or closed .

On the other hand, the stopper 400 is mounted on the upper end of the flange 200 so as to be rotatable through the first hinge unit 420, thereby restricting the vertical movement of the shutoff bar 300. The control lever 500 is mounted on the upper end of the flange 200 so as to be rotatable through the second hinge unit 520 and can restrict the rotation of the stopper 400. [

1, the stopper 400 may include a stopper body 410, a first hinge portion 420, and a fixing groove portion 430. The stopper 400 may include a stopper body 410, a first hinge portion 420, And can be fixed by a fixing protrusion 530 formed on the base 520. 2, the fixing protrusion 530 formed on the second hinge unit 520 can release the fixing groove 430 of the stopper 400 by operating the control lever handle 510, By operation, the shut-off rod 300 can move upward by the pressure of the extinguishing liquid (not shown) flowing into the inflow conduit 110 to open the inflow conduit 110.

The second sealing part 320 may protrude from the outer circumferential surface of the shutting bar 300 and the second sealing part 320 may provide a sealing force between the shutting bar 300 and the shut- The second sealing member 321 can be further mounted. The second sealing member 321 is not particularly limited as long as it is a member capable of providing a sealing force between the shut-off bar 300 and the shut-off pipe 130. For example, the second sealing member 321 may be an O- .

In addition, the selection valve 800 may include a first space portion 133 surrounded by the second sealing portion 320, the shielding conduit 130, the flange 210, and the shut- The first space portion 133 having such a structure can communicate with the inflow conduit 110 by the bypass flow path 310 formed inside the shut- The first space portion 133 may disperse the pressure concentrated on the lower surface of the shut-off bar 300. Also, since the pressure dispersed by the first space portion 133 pushes the shut-off bar 300 downward, the sealing force of the shut-off bar 300 can be further improved.

3 is a vertical sectional view of the main body of the selection valve for high-pressure equipment shown in Fig.

Referring to FIG. 3, the main body 100 according to the present embodiment may include an inflow conduit 110, a discharge conduit 120, and a shutoff conduit 130.

Specifically, a coupling portion 111 having a plurality of fasteners 112 may be formed at the end of the inflow conduit 110, and a plurality of fasteners 122 (not shown) may be formed in the discharge conduit 120 and the shut- And 132, respectively.

4 and 5 are respectively a plan view and a side view of the flange of the selection valve for high-pressure equipment shown in Fig.

Referring to these drawings, the flange 200 according to the present embodiment includes a flange body 210 having a plurality of fasteners 211, and a first hinge support 230 protruding from the upper surface of the flange body 210 And a second hinge support 240. In addition, the flange 200 may have a structure in which a shut-off bar protrusion 220 is formed at a central portion thereof.

Fig. 6 is a plan view of the selection valve for high-pressure equipment shown in Fig.

Referring to FIG. 6 together with FIGS. 4 and 5, a stopper 400, a control lever 500, and a driving unit 700 may be mounted on the upper surface of the flange 200. The stopper 400 is mounted on the first hinge support 230 through the first hinge portion 420 and the control lever 500 is mounted on the second hinge support 240 through the second hinge portion 520 .

The stopper 400 may further include an elastic member 421 at a central portion of the first hinge portion 420 for elastic operation and the control lever 500 may also include a second hinge portion 420 for resilient operation. An elastic member 522 may be additionally mounted on one side of the base member 520. Specifically, the elastic members 421 and 522 are not particularly limited as long as they are members capable of providing an elastic force for elastic operation, and may be, for example, coil springs.

The driving unit 700 may include a driving unit body 710 and a driving member 730. Specifically, the driving member 730 can be driven by the hydraulic pressure supplied through the hydraulic pressure supply unit 721 and the hydraulic pressure discharge unit 722, and the second hinge unit 520 can be driven by the driving member 730 Can be rotated. A detailed description thereof will be described later.

Fig. 7 is a sectional view taken along the line B-B in Fig. 6.

Referring to FIG. 7 together with FIG. 2, the stopper 400 is mounted on the upper end of the flange 200 so as to be rotatable through the first hinge unit 420, . The control lever 500 is mounted on the upper end of the flange 200 so as to be rotatable through the second hinge unit 520 and can restrict the rotation of the stopper 400. [

7, the stopper 400 may include a stopper body 410, a first hinge portion 420, and a fixing groove portion 430. The stopper 400 may include a stopper body 410, a first hinge portion 420, And can be fixed by a fixing protrusion 530 formed on the base 520. 2, the fixing protrusion 530 formed on the second hinge unit 520 can release the fixing groove 430 of the stopper 400 by operating the control lever handle 510, By operation, the shut-off rod 300 can move upward by the pressure of the extinguishing liquid (not shown) flowing into the inflow conduit 110 to open the inflow conduit 110.

A threaded hole 330 is formed on the inner surface of the shut-off bar 300 and a bolt-shaped pressing member 640 having a screw thread is formed on the threaded hole 330. have.

Specifically, the pressing member 640 can control the pressing force of the shut-off bar 300 according to the protruding length of the pressing member 640, which is mounted between the shut-off bar 300 and the stopper 400. That is, when it is necessary to press the shut-off bar 300 with a higher pressing force, the height of the pressing member 640 can be changed by the bolting operation.

Fig. 8 is a sectional view taken along the line C-C in Fig.

Referring to FIG. 8 together with FIGS. 1 and 2, the driving unit 700 may include a driving unit body 710 and a driving member 730. Specifically, the driving member 730 can be driven by the pneumatic pressure supplied through the pneumatic / hydraulic pressure supply unit 721 and the pneumatic / hydraulic pressure discharge unit 722, and the rotation protrusion 521 is pushed by the driving member 730, 2 hinge portion 520 can be rotated. Accordingly, the selection valve (800 in FIG. 1) according to the present embodiment can perform an automated operation by controlling the pneumatic pressure supplied to the driving unit 700. [ Accordingly, the selection valve (800 in FIG. 1) according to the present embodiment can perform an automated operation by controlling the pneumatic pressure supplied to the driving unit 700. [

9 is a vertical sectional view of the shut-off bar of the high-pressure equipment selection valve shown in Fig. 1, and Fig. 10 is an exploded view of Fig. Figs. 11 and 12 show enlarged views of portions A and A 'in Fig. 1, respectively.

1, the blocking rod 300 may have a cylindrical shape so as to be movable up and down along the shutoff channel 130, and a bypass flow path 310 may be formed therein.

A screw hole 330 may be formed at the upper end of the shut-off bar 300 and a bolt-shaped joining member 640 may be attached to the screw hole 330.

An extension portion 340 protruding from the lower end of the shut-off bar 300 may be formed at the lower end of the shut-off bar 300 and a fastening member 610 may be attached to the extension 340. A third sealing member 612, which provides a sealing force, may be mounted between the extension 340 and the fastening member 610. The third sealing member 612 is not particularly limited as long as it is a member capable of providing a sealing force between the extending portion 340 and the tightening member 610. For example, an O-ring composed of a rubber material, Lt; / RTI >

The fastening member 610 may be fixed by a fixing member 630 and the fixing member 630 may be formed in a structure in which a screw thread is formed on the outer surface of the fastening member 630 and the fastening member 630 is bolted to the lower end of the shut- Lt; / RTI > Specifically, the outer diameter (D2 x 2) of the fixing member 630 may be 105 to 150% of the outer diameter (D1 x 2) of the extended portion 340 so as to firmly fix the fastening member 610 have. 12, when the outer diameter of the throttle portion 630 is less than 105% of the outer diameter of the extended portion 340, the washer 632 is further attached to further secure the tightening member 610 Can be fixed.

The fastening member 610 may include a pressing protrusion 611 protruding in the direction of the first sealing member 620. Further, the tightening member 610 may be mounted at a predetermined distance d from the lower end of the shut-off bar 300. Therefore, the tightening member 610 can slide by a predetermined distance d to further press the first sealing member 620.

Specifically, when the shutoff operation of the inlet pipe 110 of the shut-off rod 300 is maintained and the high-pressure fluid is supplied to the inlet pipe 110, the fastening member 610 is moved to a predetermined interval (d) in the direction of the lower end of the shutting bar 300. It goes without saying that the predetermined gap d may be appropriately changed to achieve the desired sealing force. Therefore, the first sealing member 620 can be further pressed by the movement of the tightening member 610. [ As a result, the pressurized first sealing member 620 can provide a further increased sealing force between the shut-off rod 300 and the inflow conduit 110, that is, the shut-off portion 101.

In addition, as shown in FIG. 12, the first sealing member 620 'may have a protrusion 621' on one side. This protrusion 621 'can be further pressed by the movement of the tightening member 610 so as to provide a further increased sealing force between the shut-off bar 300 and the inflow conduit 110, have.

Further, the fire control selection valve 800 according to the present embodiment can withstand a pressure equivalent to 350 bar, and can be applied to a fire-fighting facility requiring an operating pressure equivalent to 300 bar.

In addition, the fire control selection valve 800 according to the present embodiment has a structure in which the first sealing member 620 is pressed by the tightening member 610 only when high-pressure fluid is supplied to the inflow conduit 110, The repeated load applied to the one sealing member 620 can be avoided. As a result, the life of the first sealing member 620 can be prolonged, thereby satisfying 500 valve operation tests for UL certification.

The first sealing member 620 is not particularly limited as long as it is a member capable of providing a further increased sealing force between the blocking rod 300 and the inflow conduit 110, that is, the blocking portion 101, And may be an O-ring composed of a rubber material. Further, the first sealing member 620 may be elliptical in vertical section, which is pressed by the pressing protrusion 610 of the tightening member 610.

Therefore, the selection valve for high-pressure equipment according to the present embodiment can be configured to have the selection valve with the structure including the shut-off bar, the first sealing member and the tightening member having the specific structure, Therefore, it is possible to increase the operational convenience in selection valve safety inspection. The selection valve for high-pressure equipment according to one embodiment of the present invention has a structure in which the sealing force is increased by the pressure of the extinguishing liquid supplied through the inflow conduit, so that it is possible to provide further improved airtightness, Which is a technological advantage, can be significantly increased.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

100: main body 101:
110: inlet pipe 111:
112: fastener 120: exhaust duct
121: engaging portion 122: fastener
130: shut-off duct 131:
132: fastener 133: first space part
200: flange 210: flange body
211: fastener 220: shut-off bar protrusion
230: first hinge support 240: second hinge support
300: a shut-off bar 310: a by-pass channel
320: second sealing portion 321: second sealing member
330: screw hole 340: extension part
400: stopper 410: stopper body
420: first hinge portion 421: elastic member
430: fixing groove portion 500: control lever
510: control lever handle 520: second hinge portion
521: rotation protrusion 522: elastic member
530: Fixing protrusion 610: Fastening member
611: pressing projection 612: third sealing member
620, 620 ': first sealing member 621': protrusion
630: Fixing member 631: Through hole
632: washer 640: pressing member
700: driving part 710: driving part main body
721: Hydraulic supply part 722: Hydraulic discharge part
730: driving member 800: selection valve

Claims (6)

A selection valve for a fire fighting system mounted on a piping of a fire fighting system,
A main body part (100) having an inlet pipe (110), a discharge pipe (120) and a shutoff pipe (130);
A shut-off bar 300 inserted into the shut-off duct 130 to move up and down along the shut-off duct 130 and to open or close the inflow duct 110 according to the upward and downward movements;
A pressing protrusion 611 mounted on the lower end of the shutting bar 300 at a predetermined distance d and protruding in the direction of the first sealing member 620 by pressing and fixing the first sealing member 620 A tightening member 610;
A first sealing member mounted between the lower end of the shut-off bar 300 and the tightening member 610 and providing a sealing force between the shut-off bar 300 and the inflow line 110 during the closing operation of the shut- member, 620); And
A fixing member 630 attached to a lower end of the shut-off bar 300 to fix the tightening member 610;
, ≪ / RTI &
When the shut-off operation of the inlet pipe 110 of the shut-off valve 300 is maintained and the high-pressure fluid is supplied to the inlet pipe 110,
The tightening member 610 moves toward the lower end of the shutting bar 300 by the predetermined distance d by the pressure of the fluid and the first sealing member 620 is further pressed by the movement of the tightening member 610 , Wherein the pressurized first sealing member (620) provides a further increased sealing force between the shut-off bar (300) and the inflow conduit (110).
The method according to claim 1,
The fire control selection valve includes:
A flange 200 mounted on the upper end of the shutoff line 130 to close the shutoff line 130 and having a shutoff rod protrusion 220 formed at the center thereof;
A stopper 400 mounted on an upper end of the flange 200 to be rotatable through the first hinge unit 420 and restricting the upward and downward movement of the shutting bar 300, ; And
A control lever (500) is mounted on the upper end of the flange (200) through the second hinge part (520) and rotatably mounted on the upper end of the shutting bar (300) );
Further comprising a control valve for controlling the valve.
The method according to claim 1,
Wherein the first sealing member is an O-ring made of a rubber material.
The method according to claim 1,
Wherein an extension portion protruding from a lower end portion of the shut-off bar is formed at a lower end portion of the shut-off bar, and a tightening member is mounted to the extension portion.
5. The method of claim 4,
And a third sealing member is mounted between the extension and the tightening member to provide a sealing force.
A fire fighting system comprising at least one fire control selection valve according to any one of claims 1 to 5.

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