JP2018021619A - Drainage funnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable water leakage at a valve connected to a container of a drainage funnel to be discovered only through a looking at its outer appearance from a far distance.SOLUTION: There are provided a container having an input port connected to a pipe of electric power station through a valve and an output port connected to a drainage system; an intermediate member arranged between the input port and the output port within the container and formed with an intermediate port where the flowing-in water is flowed out to the output port; a lid arranged at the output port side rather than the intermediate member to open or close the intermediate port; engaging means for engaging the lid having the intermediate port closed with the intermediate member so as to release the engagement when water flowed in through the flowing-in port is accumulated by a predetermined amount on the intermediate member under a state in which the intermediate port is closed; and a display part connected to the lid so as to move from a non-detected position to the detected position as the intermediate port is released by the lid.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drainage funnel provided in a drainage path of a power plant.

  As described in Patent Document 1, a conventional drainage funnel is a container connected via a valve to a pipe arranged in a turbine building of a nuclear power plant, and inspects equipment and pipes in a feed and condensate system. A container for storing water drained from the equipment and piping, a transparent lid attached to the top opening of the container so as to be openable and closable, and a water detection sensor attached to the inside of the container. And a water detection sensor that can be remotely monitored.

Japanese Patent Laid-Open No. 2003-148861

  By the way, in the drainage funnel of the said patent document 1, although the water detection sensor inside a container enables it to monitor the water leak from a valve | bulb remotely, the power supply to a water detection sensor and a monitor, and these electronic devices A control circuit is required, and the entire apparatus becomes large, which increases the cost.

  Therefore, it is conceivable to check the state of the inside of the container with a transparent lid without using a water detection sensor, but when the water leakage from the valve ends in a short time, always keep the container itself. In addition to having to look at the exterior, simply looking at the exterior from a distance may not be able to reliably recognize the water flowing in the container, which is difficult to implement.

  Accordingly, an object of the present invention is to provide a drainage funnel that can easily and surely detect water leakage from a valve connected to the drainage funnel by simply visualizing the drainage funnel container itself from a distance.

  A drainage funnel according to the present invention includes a container having an inlet connected to piping of a power plant via a valve, an outlet connected to a drainage system, and the inlet and the outlet in the container. An intermediate member provided in between and formed with an intermediate port through which the inflowing water flows to the outlet, a lid provided on the outlet side of the intermediate member, for opening and closing the intermediate port, and the intermediate port Locking means for locking the closed lid to the intermediate member, and releasing the lock when a predetermined amount of water flowing in from the inflow port accumulates on the intermediate member with the intermediate port closed. The locking means is positioned at the non-detection position in the locking state by the locking means, and in the unlocking state by the locking means, the detection position is changed from the non-detection position by the opening operation of the intermediate port by the lid. A display unit connected to the lid so as to move to And said that there were pictures.

  In the drainage funnel of the present invention, when a predetermined amount of water accumulates in the intermediate member in the container from the valve in a state where the intermediate port is closed by the lid, the locking to the lid that closes the intermediate port is released, and The lid is separated from the peripheral edge, and the intermediate port is opened. At this time, the weight moves from the non-detection position to the detection position in accordance with the opening operation of the lid. At the time of inspection, the operator can easily and surely recognize that there has been water leakage from the valve only by visually observing the position of this weight from a distance.

  As one aspect of the drainage funnel according to the present invention, the locking means is attached to the lid and can be attracted to a peripheral edge of the intermediate port, and a weight mechanism that lifts the lid upward and closes the intermediate port The weight mechanism includes a linear member having one end connected to the lid, a guide member for folding the linear member raised upward to guide downward, and is led downward It is preferable to have a weight connected to the other end of the linear member.

  As described above, the closing force for the lid is generated by the magnetic force of the magnet attached to the lid and the weight of the weight as the locking force of the lid that closes the intermediate port. Moreover, the closing force with respect to a lid | cover can be changed only by changing the weight of a weight.

  As another aspect of the drainage funnel according to the present invention, rather than a closing force that closes the lid by the magnetic force of the magnet and the weight of the weight, the weight of the lid and the weight of the drainage reaching a predetermined amount on the intermediate member, When the opening force for opening the lid is increased by the above, it is preferable that the locking by the locking means is released.

  As described above, when the opening force due to the weight of the lid and the drainage amount equal to or greater than the predetermined amount is larger than the closing force due to the weight of the weight and the magnetic force of the magnet, the intermediate port is opened by the opening operation of the lid.

  As another aspect of the drainage funnel according to the present invention, the display unit is the weight, and the weight moves from the non-detection position to the detection position in accordance with the opening operation of the intermediate port by the lid. It is preferable to be configured.

  As described above, if the intermediate port is closed by the lid, the weight is positioned at the non-detection position, and if the intermediate port is opened, the lid is separated from the intermediate port and the weight is positioned at the detection position. The operator can easily and reliably find out that water leakage has occurred from the valve only by visually observing the weight located at the detection position from a distance.

  As described above, according to the present invention, it is possible to achieve an excellent effect that the leakage of the valve connected to the container can be easily and surely detected only by visually observing the drain funnel container itself from a distance.

FIG. 1 is a schematic view showing a relationship between a drainage funnel and a sump tank according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing the relationship between equipment and piping, drainage valves, and drainage funnels in the feed and condensate system of a nuclear power plant. 3A is a cross-sectional view showing a lid and a magnet attached to the lid, and FIG. 3B is a plan view of FIG. 3A. FIG. 4 is a cross-sectional view showing a state where water from the drain valve is accumulated in the drain funnel. FIG. 5 is a cross-sectional view showing a state where water accumulated in the drainage funnel is drained to the sump tank. FIG. 6 is a cross-sectional view showing a modified example of the drainage funnel. FIG. 7 is a cross-sectional view showing a modified example of the drainage funnel.

  A drainage funnel according to an embodiment of the present invention will be described with reference to the drawings.

  First, prior to describing the drainage funnel according to the present embodiment, the supply and condensate system equipment and the drainage funnel disposed in the turbine building A of the nuclear power plant will be briefly described. As shown in FIG. 2, a pipe P is connected to the supply / condensation system device B, and a drainage funnel 1 is connected to the pipe P via a drainage valve (hereinafter simply referred to as a valve) V. .

  Although only one pipe P is shown in FIG. 2, a plurality of pipes P are actually connected, and are arranged as a feed and condensate system pipe for each floor of the turbine building A, and each of the plurality of pipes P is drained. Funnel 1 is connected. A drainage channel R is constituted by a plurality of pipes P, valves V, and drainage funnels 1 (only one is shown in FIG. 2) provided on each floor. Further, on the lowest floor of the turbine building A, a drainage sump tank T1 (see FIG. 1) for storing drainage from a plurality of drainage funnels 1 arranged on each floor is arranged. The sump tank T1 is provided with a sump pump P1 as shown in FIG. Then, it is sent to the waste treatment building tank T2 by the sump pump P1 and processed in the waste liquid treatment system C.

  The drainage funnel 1 according to the present embodiment includes a storage unit configured to be capable of draining inside a container, and uses the storage unit as a water detection sensor. Specifically, as shown in FIG. 1, a box-shaped container having an open end having an inlet 20 connected to a pipe P via a valve V and an outlet 21 connected to a waste liquid treatment system C. 2 and an intermediate member (reservoir) 3 provided between the inflow port 20 and the outflow port 21 and having an intermediate port 30 for flowing inflow water to the outflow port 21. A lid 4 that opens and closes the intermediate port 30, and a locking means 5 that locks the lid 4 that closes the intermediate port 30 to the intermediate member 3. When a predetermined amount of water flowing in from the inlet 20 in the closed state accumulates on the intermediate member 3, the locking means 5 for releasing the locking and the opening / closing display can be switched by moving with the opening / closing of the lid 4. The display part 6 comprised by this is provided. That is, the intermediate port 30, the lid 4, and the locking means 5 constitute a detection unit of the water detection sensor, and the locking condition of the lid 4 with respect to the intermediate port 30 by the locking means 5 is the detection condition of the water detection sensor. Moreover, the display part 6 is provided so that the detection state and non-detection state of the latching means 5 can be visually observed.

  The container 2 includes a cylindrical (may be non-cylindrical) side wall 2a and a bottom wall 2b having a circular shape in plan view at the lower end of the side wall 2a, and an inflow port 20 is formed at one upper portion of the side wall 2a. An outlet 21 is formed at the center of the bottom wall 2b. An upper surface opening 22 having a circular shape in plan view is provided at the upper end of the container 2, and a closing member 23 is attached to the upper surface opening 22 so as to be openable and closable. Further, inside the container 2, a bottom member 24 is disposed at a position slightly above the bottom wall 2b, and an intermediate member 3 is disposed at an intermediate position in the vertical direction.

  The blocking member 23 is a disc-shaped main body 230, and a curved cylindrical shape (even a rectangular tube shape) for passing a linear member 51 connecting a weight 60 and a lid 4 (described later) through a substantially central portion of the main body 230. A good guide member 231. Specifically, an insertion hole 230 a for inserting one end portion of the guide member 231 is formed in a substantially central portion of the main body 230. One end portion of the guide member 231 is formed with an opening portion 231a that is inserted into the insertion hole 230a of the main body 230, while the other end portion is raised upward, and then the other end opening portion 231b is the main body. It is bent in an arc shape so as to face downward toward 230.

  The intermediate member 3 is an annular body in which a circular intermediate port 30 for discharging the waste water from the valve V to the bottom member 24 of the container 2 is formed in a substantially central portion.

  The bottom member 24 is a disc in which a plurality of drain holes 240 are formed, and is configured to gradually drain the drainage from the intermediate port 30. The plurality of drain holes 240 are configured not to prevent drainage from the valve A. Specifically, the plurality of drain holes 240 can drain the drainage from the valve V without flowing out to the floor even when the drainage amount from the valve V is large. There are two reasons for installing the bottom member 24. Specifically, the reason 1 is to alleviate the impact when the lid 4 is moved away from the intermediate port 30 by the drainage from the valve V. The reason 2 is that the lid 4 may block the outlet 21 of the container when the linear member 51 and the lid 4 are disconnected due to aging.

  The lid 4 is disk-shaped, has an outer diameter larger than the diameter of the intermediate port 30, and has a size that allows the intermediate port 30 to be opened and closed from below. The weight of the lid 4 itself is set to be larger than the weight of the weight 60, and the locking means 5 is locked by the magnetic force of the magnet 50 of the locking means 5 described later. It also has 5 functions.

  The locking means 5 includes an annular magnet 50 attached to a groove 4a (see FIGS. 1 and 3) formed on the peripheral edge of the lid 4, a weight mechanism 510 that lifts the lid 4 upward and closes the intermediate port 30. Is provided. Note that the depth of the groove 4a is set so that the upper surface of the magnet 50 and the upper surface of the lid 4 have the same height.

  The weight mechanism 510 includes a linear member 51 having one end connected to the lid 4 and the above-described guide member 231, and a guide member 231 for folding the linear member 51 raised upward so as to guide it downward. And a weight 60 connected to the other end of the linear member 51 led downward.

  The magnet 50 is capable of attracting the outer peripheral edge of the lid 4 to the peripheral edge of the intermediate port 30 of the metallic intermediate member 3 by magnetic force, and closes the lid 4 by the magnetic force of the magnet 50 and the weight of the weight 60. If the opening force to open the lid 4 is larger than the force due to the weight of the lid 4 and the weight of the drainage that has reached a predetermined amount on the intermediate member 3, the locking by the locking means 5 is released. The magnetic force of the magnet 50 and the weight of the weight 60 are set. Accordingly, the weight of the drainage leaked from the valve V is gradually added, so that the drainage amount reaches a predetermined amount, that is, the weight obtained by adding the weight of the lid 4 and the drainage amount reaching the predetermined amount is the weight of the weight 60. When it becomes larger than the force obtained by adding the magnetic force of the magnet 50 to the weight, the lid 4 is separated downward from the intermediate port 30 and the intermediate port 30 is opened.

  The linear member 51 is formed of a string that connects the weight 60 and the lid 4, and the weight 60 can move between the non-detection position S <b> 1 (see FIGS. 1 and 4) and the detection position S <b> 2 (see FIG. 5). When the weight 60 is set to such a length and the weight 60 is located at the detection position S <b> 2, the lid 4 is separated from the intermediate port 30, and the water accumulated on the intermediate member 3 is discharged to the bottom member 24.

  In FIG. 1, FIG. 4, FIG. 5, when the linear member 51 is inserted through the guide member 231, a part of the linear member 51 is in contact with the arc-shaped inner surface 231c of the guide member 231. Yes. Thereby, the linear member 51 is guided to the inner surface and moves in the guide member 231.

  The display unit 6 is the weight 60 made of a sphere. The weight 60 moves according to the opening / closing operation of the lid 4. Specifically, when the intermediate port 30 is closed by the lid 4 (in the locked state), the non-detection position S1 that hangs down and separates downward from the opening 231b of the guide member 231 (blocked in FIGS. 1 and 4). Although it is in contact with the upper surface of the member 23, it may be located above the closing member 23), and the water leakage (drainage) from the valve V reaches a predetermined amount on the intermediate member 31 as described above. Accordingly, as shown in FIG. 5, when the lid 4 is separated downward from the intermediate port 30 and the intermediate port 30 is opened (becomes unlocked with the opening operation of the lid 4), the non-detection position The guide member 231 is lifted from S1 and moved to the detection position S2 in contact with the opening 231b at the other end of the guide member 231. The diameter of the weight 60 is set to be larger than the inner diameter of the guide member 231, and the weight 60 is held at the detection position S <b> 2 in contact with the opening 231 b at the other end of the guide member 231. Moreover, since the weight 60 is always exposed from the guide member 231 and has good visibility, it is ensured that the weight 60 is located at the non-detection position S1 or the detection position S2. I can grasp it. As described above, the weight 60 of the weight 60 is set to be smaller than the weight of the lid 4, and is the locking condition of the locking means 5.

  Below, the usage aspect of the drainage funnel which concerns on this embodiment is demonstrated. In the state of FIG. 1, the intermediate member 3 has no drainage from the valve V, the closing force due to the weight of the weight 60 and the magnetic force of the magnet 50 acts on the lid 4, and the intermediate port 30 of the intermediate member 3 is covered with the lid. 4, the weight 60 hangs down and is located at the non-detection position S <b> 1, i.e., there is no water leakage from the valve V.

  Next, when there is water leakage (drainage) from the valve V and the water accumulated on the intermediate member 3 reaches a predetermined amount, the opening force due to the weight of the lid 4 and the weight of water exceeding the predetermined amount is applied to the lid 4. When the opening force becomes larger than the closing force, the lid 4 is pushed downward against the closing force and is detached from the peripheral edge portion of the intermediate port 30.

  At this time, the tensile force by the linear member 51 acts by the opening force, and the weight 60 moves from the non-detection position S1 to the detection position S2.

  At the time of inspection, the operator can confirm water leakage from the valve V connected to the drainage funnel 1 by visually observing that the weight 60 is at the detection position S2. When the weight 60 at the detection position S2 is to be returned to the non-detection position S1 after the inspection is completed, the weight 60 is pulled to the non-detection position S1 by pulling the weight 60 downward against the weight of the lid 4. Can be returned. At this time, since the lid 4 closes the intermediate port 30 of the intermediate member 3, the lid 4 can be kept closed by the weight of the weight 60 and the magnetic force of the magnet 50, so the weight 60 is maintained at the non-detection position S1. can do.

  The drainage funnel according to the present invention can be variously modified without being limited to the above embodiment.

  For example, in the case of the above embodiment, the intermediate port 30 is blocked by the magnetic force of the magnet 50 provided on the lid 4 and the weight of the weight 60. For example, as shown in FIG. The lid 4 may be closed by the tensile force of the tension spring 50A and the magnetic force of the magnet 50, and the lid 4 is closed by the tensile force of the rubber string 50B and the magnetic force of the magnet 50 as shown in FIG. May be.

  In the case of the above embodiment, the display unit 6 includes the weight 60 connected to the other end of the linear member 51 having one end connected to the substantially center of the lid 4. The display unit 6 may be configured from a columnar weight 61 having a predetermined weight attached to the other end (tip) portion of the rod-like member 52 having one end (base end) portion fixed to the portion.

  In the case of the above embodiment, the intermediate port 30 is opened and closed by the lid 4. However, an annular packing is provided between the intermediate port 30 and the lid 4, and the sealing property between the intermediate port 30 and the lid 4 is provided. May be secured.

  Moreover, in the case of the said embodiment, although the flat intermediate member 3 and the disk-shaped lid | cover 4 were used, as shown in FIG. 7, for example, a mortar-shaped intermediate member 31 and a substantially hemispherical lid | cover 41 may be used.

  Moreover, although the said embodiment demonstrated the case where it applied to the equipment and piping of the feed water condensate system of a nuclear power plant, this invention is applied not only to the said feed water condensate system but the system | strain which holds the water in a building. It can also be applied to equipment and piping in the feed and condensate system of thermal power plants.

  Moreover, in the case of the said embodiment, although it was set as the drainage funnel 1 with which the upper surface opening part 22 of the container 2 was sealed by the closure member 23, the structure similar to the said embodiment is used for the drainage funnel by which the upper surface opening part 22 was opened. You may make it apply.

  DESCRIPTION OF SYMBOLS 1 ... Drainage funnel, 2 ... Container, 2a ... Container side wall, 2b ... Container bottom wall, 20 ... Inlet, 21 ... Outlet, 22 ... Top opening, 23 ... Closure member, 230 ... Main body, 231 ... Guidance Member, 231a ... Opening at one end, 231b ... Opening at the other end, 24 ... Bottom member, 240 ... Drain hole, 3, 3A, 31 ... Intermediate member, 30 ... Intermediate port, 4, 4A ... Cover, 5 ... locking means, 50 ... magnet, 51 ... linear member, 52 ... rod-like member, 6 ... display unit, 60, 61 ... weight, S1 ... non-detection position, S2 ... detection position, T1 ... sump tank, V ... valve 510: Weight mechanism

Claims (4)

A container having an inlet connected to the piping of the power plant via a valve, and an outlet connected to the drainage system;
In the container, an intermediate member provided between the inflow port and the outflow port and formed with an intermediate port for flowing inflowed water to the outflow port;
A lid that is provided closer to the outlet than the intermediate member and opens and closes the intermediate port;
Locking means for locking the lid with the intermediate port closed to the intermediate member, and when a predetermined amount of water flowing in from the inflow port is collected on the intermediate member with the intermediate port closed. Locking means for releasing the stop;
In the locked state by the locking means, it is located at the non-detection position, and in the unlocked state by the locking means, it moves from the non-detection position to the detection position as the intermediate port is opened by the lid. A drainage funnel comprising: a display unit coupled to the lid. The locking means includes a magnet that is attached to the lid and can be attracted to a peripheral portion of the intermediate port, and a weight mechanism that lifts the lid upward and closes the intermediate port.
The weight mechanism includes a linear member having one end connected to the lid, a guide member for turning back the linear member raised upward, and the linear member led downward The drainage funnel according to claim 1, further comprising a weight connected to the other end of the drainage funnel.   The opening force for opening the lid is larger than the closing force for closing the lid due to the magnetic force of the magnet and the weight of the weight, due to the weight of the lid and the weight of the drainage reaching a predetermined amount on the intermediate member. The drainage funnel according to claim 2, wherein the locking by the locking means is released.   The display unit is the weight, and the weight is configured to move from the non-detection position to the detection position in accordance with the opening operation of the intermediate port by the lid. The drainage funnel according to 2 or 3.

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