CN106178364A - A kind of drainage arrangement, fire-fighting system and using method - Google Patents

Abstract

The invention provides a kind of drainage arrangement, fire-fighting system and using method, wherein drainage arrangement is arranged on fire hydrant, and drainage arrangement includes: drain pipe and ball valve；Drain pipe has cavity, and one end of cavity forms "/" shape structure；Wherein, the wide mouth that "/" shape structure has connects with the outlet of fire hydrant, and the slot that "/" shape structure has connects with extraneous air；Ball valve is arranged in cavity；Cavity, can be used for receiving, by wide mouth, the water flowed into from the outlet of fire hydrant, and under the promotion of the water that ball valve can be received at leniently mouth, the slope having along "/" shape structure moves at slot, to block slot；Ball valve can move to Kuan Kouchu along slope, so that the water in cavity is discharged from slot.This programme, it is possible to automatically turn on the outlet closing fire hydrant.

Description

Drainage device, fire fighting system and using method

Technical Field

The invention relates to the technical field of fire fighting, in particular to a drainage device, a fire fighting system and a using method.

Background

Fire hydrants are the facilities provided on fire hoses for extinguishing fires. When using the fire hydrant, can connect squirt or water receiving belt on the fire hydrant to open the water valve of fire hydrant, make and be full of water in the fire hydrant, and utilize water pressure to spout water, in order to realize putting out a fire. In general, after the fire extinguishing is completed, it is necessary to discharge the water filled in the hydrant.

At present, a water outlet can be arranged on a fire hydrant, and when the fire hydrant is used, the water outlet is manually closed; after the fire hydrant is used, the water outlet is manually opened to discharge the water in the fire hydrant,

however, since the water outlet needs to be opened and closed manually, after the fire hydrant is used, the water outlet is easy to forget to be opened for draining.

Disclosure of Invention

The embodiment of the invention provides a drainage device, a fire fighting system and a using method, which can automatically open and close a water outlet.

In a first aspect, an embodiment of the present invention provides a drainage device, which is installed on a fire hydrant, and includes: a drain pipe and a spherical valve body; wherein,

the drain pipe is provided with a cavity, and one end of the cavity forms a '/\\' shaped structure; wherein the "/\" shaped structure has a wide mouth in communication with the water outlet of the hydrant and a narrow mouth in communication with the outside air;

the spherical valve body is arranged in the cavity;

the cavity can be used for receiving water flowing from the water outlet of the fire hydrant through the wide opening, and the ball valve body can move to the narrow opening along the slope of the '/\\' shaped structure under the pushing of the water received from the wide opening so as to block the narrow opening;

the ball valve body can move along the slope to the wide opening to discharge the water in the cavity from the narrow opening.

Preferably, the slope of the slope and the gravity of the ball valve body satisfy the following first and second formulas:

the first formula includes:

$\left\{\begin{array}{c}{F}_{0}sin\mathrm{\θ}>Gcos\mathrm{\θ}+f_0\\ k=\tan \mathrm{\θ}\end{array}\right.$

the second formula includes:

$\left\{\begin{array}{c}{F}_{1}sin\mathrm{\&theta;}<Gcos\mathrm{\&theta;}-f_1\\ k=\tan \mathrm{\&theta;}\end{array}\right.$

wherein k is used to characterize the slope of the ramp; f₀A push force for characterizing movement of the ball valve body along a ramp the "/\" shaped structure has to the narrow opening to block the corresponding water received from the wide opening when the narrow opening is closed; f₁The pushing force is used for representing the corresponding water received from the wide port when the ball valve body moves to the wide port along the slope; g is used for representing the gravity of the ball valve body; f. of₀The device is used for representing the friction force of the slope acting on the ball valve body during the process that the ball valve body moves to the narrow opening along the slope of the '/\\' shaped structure; f. of₁The slope is used for representing the friction force acting on the ball valve body during the process that the ball valve body moves to the wide opening along the slope; theta is used for representing the included angle between the slope and the horizontal direction.

Preferably, the drain pipe includes: a first female component and a second female component; wherein,

the first concave part is provided with a first connecting piece, and the second concave part is provided with a second connecting piece corresponding to the first connecting piece;

when the first connecting piece is connected with the second connecting piece, the first concave part and the second concave part form the drain pipe.

Preferably, the first and second electrodes are formed of a metal,

the spherical valve body is a plastic valve body or a rubber valve body;

and/or the presence of a gas in the gas,

the spherical valve body is a hollow valve body.

In a second aspect, an embodiment of the present invention further provides a fire fighting system, including: a fire hydrant and at least one drainage device as described in any one of the above;

the fire hydrant is used for outputting water to the drainage device from the water outlet.

Preferably, the fire fighting system further comprises: a plug cover; wherein,

the plug cover is connected with the water outlet of the fire hydrant, and grooves corresponding to the drainage devices in number are formed in the plug cover;

each drainage device is arranged in a corresponding groove of the plug cover.

Preferably, the first and second electrodes are formed of a metal,

the plug cover is connected with the water outlet of the fire hydrant in a thread or waterproof glue sealing mode;

and/or the presence of a gas in the gas,

when the plug cover is connected with the water outlet of the fire hydrant, the at least one drainage device comprises at least one first drainage device; wherein,

when the fire hydrant is used, the ball valve body of the first drainage device plugs the corresponding narrow opening, and when the fire hydrant is not used, the ball valve body of the first drainage device is positioned at the corresponding wide opening.

Preferably, the first and second electrodes are formed of a metal,

further comprising: electrode a, electrode b and circuit board; wherein,

the electrode a and the electrode b are arranged on the fire hydrant;

when the electrode a and the electrode b are both in water, the electrode a and the electrode b are conducted; when at least one of the electrode a and the electrode b is not in water, the electrode a and the electrode b are disconnected;

the circuit board is respectively connected with the electrode a and the electrode b and is used for monitoring the conduction state between the electrode a and the electrode b and sending the monitored conduction state;

the horizontal position of the electrode a and/or the electrode b is higher than the horizontal position of the at least one first drainage device.

In a third aspect, an embodiment of the present invention further provides a method for using the fire fighting system, where the method includes:

opening the fire hydrant, which outputs water from the water outlet to the drainage device;

the cavity receives water flowing from the water outlet of the fire hydrant through the wide opening, and the ball valve body moves to the narrow opening along the slope under the pushing of the water so as to block the narrow opening;

and closing the fire hydrant, moving the ball valve body to the wide opening along the slope, and discharging water in the cavity from the narrow opening.

Preferably, the first and second electrodes are formed of a metal,

after the ball valve body moves along the slope to the narrow opening to block the narrow opening, the ball valve further comprises: the circuit board monitors that the conduction state between the electrode a and the electrode b comprises conduction, and sends the conduction state comprising conduction;

after the water in the cavity is discharged from the narrow opening, the method further comprises the following steps: and the circuit board monitors that the conducting state between the electrode a and the electrode b comprises disconnection, and sends the conducting state comprising disconnection.

The embodiment of the invention provides a drainage device, a fire fighting system and a using method, wherein a drainage pipe of the drainage device is provided with a cavity, one end of the cavity is in a '/\\' shaped structure, a spherical valve body is arranged in the cavity, the cavity can be used for receiving water flowing from a water outlet of a fire hydrant through a wide port of the '/\' shaped structure, when the fire hydrant is used, the spherical valve body can move to the narrow port along a slope of the '/\' shaped structure under the pushing of the water received from the wide port due to high water pressure so as to block the narrow port, and when the fire hydrant is not used, the spherical valve body can move to the wide port along the slope due to low water pressure so as to discharge the water in the cavity from the narrow port. Therefore, the scheme can automatically open and close the water outlet of the fire hydrant.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic longitudinal sectional view of a drainage device according to an embodiment of the present invention;

FIG. 2 is a schematic longitudinal sectional view of another drainage device provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of another drainage device provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of a fire fighting system according to an embodiment of the present invention;

FIG. 5 is a schematic view of another fire protection system provided by an embodiment of the present invention;

FIG. 6 is a schematic view of yet another fire protection system provided by an embodiment of the present invention;

FIG. 7 is a flow chart of a method provided by one embodiment of the present invention;

fig. 8 is a flow chart of another method provided by an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.

An embodiment of the present invention provides a drainage device, which is installed on a fire hydrant, please refer to fig. 1 and 2, wherein fig. 1 and 2 are schematic longitudinal sectional views of the drainage device, fig. 1 is a schematic view of the drainage device when the fire hydrant is in use, and fig. 2 is a schematic view of the drainage device when the fire hydrant is not in use, wherein the drainage device includes: a drain pipe 101 and a ball valve body 102; wherein,

the drain pipe has a cavity 1011, one end of which forms a "/\" shaped structure; wherein the "/\" shaped structure has a wide mouth 1012 in communication with the water outlet of the hydrant and a narrow mouth 1013 in communication with the outside air;

the ball valve body 102 is disposed within the cavity 1011;

the cavity 1011 can be used for receiving water flowing from the water outlet of the fire hydrant through the wide port 1012, and the ball valve body 102 can move to the narrow port 1013 along the slope of the'/\\ "shaped structure under the pushing of the water received from the wide port 1012 so as to block the narrow port 1013;

the ball valve body 102 can move along the ramp to the wide port 1012 to allow the water in the cavity 1011 to exit the narrow port 1013.

It can be seen that, in the above embodiment of the present invention, since the drain pipe of the drainage apparatus has a cavity, and one end of the cavity is formed in a '/\\' shaped structure, and the ball valve body is disposed in the cavity, the cavity can be used to receive water flowing in from the water outlet of the hydrant through a wide opening which the '/\' shaped structure has, when the hydrant is in use, the ball valve body can move to the narrow opening along a slope which the '/\' shaped structure has under the push of the water received from the wide opening due to high water pressure, so as to block the narrow opening, and when the hydrant is not in use, the ball valve body can move to the wide opening along the slope due to low water pressure, so that the water in the cavity is discharged from the narrow opening. Therefore, the scheme can automatically open and close the water outlet of the fire hydrant.

In one embodiment of the invention, as for the shape of the joint of the drain pipe and the water outlet of the fire hydrant, the spherical valve body is required to be always positioned in the cavity, so that the caliber of the wide opening is required to be smaller than the diameter of the spherical valve body, and the specific shape is not particularly limited.

When the fire hydrant is used, the higher the pressure of water, the higher the water column that can be ejected by a water gun connected to the fire hydrant. In the field of fire fighting, it is generally required that the water column which can be sprayed by the water gun is not lower than a set height, and therefore, the pressure of the corresponding water is not lower than a set pressure value when the fire hydrant is used. For example, the set height may be 6 meters. For example, the set pressure value is 0.2 MPa.

In one embodiment of the present invention, in order to ensure that the ball valve body can be pushed to the narrow opening along the slope of the "/\" shaped structure under the pressure of water to block the narrow opening when the fire hydrant is in use, the slope of the slope and the gravity of the ball valve body satisfy the following formula (1):

$\left\{\begin{array}{c}{F}_{0}sin\mathrm{\&theta;}>Gcos\mathrm{\&theta;}+f_0\\ k=\tan \mathrm{\&theta;}\end{array}\right.---\left(1\right)$

wherein k is used to characterize the slope of the ramp; f₀A push force for characterizing movement of the ball valve body along a ramp the "/\" shaped structure has to the narrow opening to block the corresponding water received from the wide opening when the narrow opening is closed; g is used for representing the gravity of the ball valve body; f. of₀The device is used for representing the friction force of the slope acting on the ball valve body during the process that the ball valve body moves to the narrow opening along the slope of the '/\\' shaped structure; theta is used to represent the included angle between the slope and the horizontal direction, please refer to the included angle denoted by theta in fig. 1.

If the pressure of water corresponding to the use of the fire hydrant is known, F in the above formula (1)₀Equal to the known water pressure; if different fire hydrants are used with different water pressures, then F in the above formula (1)₀Equal to fire collarA set pressure value specified in the field.

In one embodiment of the present invention, the cavity may be formed at one end thereof in a "/\" shape, and the slope may be a straight line or a curved line. When the slope is a straight line, the slope k is the same at any point of the straight line; when the slope is a curve, it is necessary to ensure that the slope k at any point on the curve satisfies the above equation (1).

The slope of the slope, the pressure of water when the fire hydrant is used and the gravity of the spherical valve body meet the formula (1), so that the pressure of water received from the wide opening can push the spherical valve body to the narrow opening along the slope of the '/\\' shaped structure when the fire hydrant is used, and the automatic closing function of the water outlet of the fire hydrant is realized.

In order to ensure that the narrow opening can be blocked by the spherical valve body, the contact surface between the narrow opening and the spherical valve body is required to be circular, so that the spherical valve body can be pushed down to the narrow opening under the pressure action of water, and the narrow opening can be better blocked. In order to further ensure that the spherical valve body is not flushed out of the drain pipe from the narrow opening, the diameter of the spherical valve body is required to be larger than the caliber of the narrow opening.

In one embodiment of the present invention, in order to ensure that the ball valve body cannot be held at the narrow opening by the pressure of water at the end of use of the fire hydrant and can slide down to the wide opening on a slope, the slope of the slope and the maximum pressure of water and the gravity of the ball valve body corresponding to the end of use of the fire hydrant need to satisfy the following formula (2):

$\left\{\begin{array}{c}{F}_{1}sin\mathrm{\&theta;}<Gcos\mathrm{\&theta;}-f_1\\ k=\tan \mathrm{\&theta;}\end{array}\right.---\left(2\right)$

wherein k is used to characterize the slope of the ramp; f₁The pushing force is used for representing the corresponding water received from the wide port when the ball valve body moves to the wide port along the slope, wherein the value is equal to the maximum pressure value of the corresponding water at the end of the use of the fire hydrant; g is used for representing the gravity of the ball valve body; f. of₁The slope is used for representing the friction force acting on the ball valve body during the process that the ball valve body moves to the wide opening along the slope; theta is used to represent the included angle between the slope and the horizontal direction, please refer to the included angle denoted by theta in fig. 1.

It should be noted that the maximum pressure of water at the end of the use of the fire hydrant may be determined according to the location of the drainage device on the fire hydrant. And in the process that the water in the cavity is discharged from the narrow opening, the pressure of the water on the spherical valve body is smaller and smaller.

Satisfy above-mentioned formula (2) through the slope with the slope on slope and the gravity of spherical valve body to can guarantee the fire hydrant when using the end, the pressure of water can't keep spherical valve body in slot department, makes spherical valve body follow slope and slides down to wide mouthful department, cavity and outside air intercommunication, and the slot discharge can be followed to the water in the cavity, thereby has realized the automatic function of opening of fire hydrant delivery port.

According to the above embodiment, it is better that the ball valve body has a smaller mass, but the ball valve body has a minimum mass required to satisfy the above formula (2), and therefore, in one embodiment of the present invention, the ball valve body may be at least a plastic valve body or a rubber valve body. This embodiment not only can guarantee that spherical valve body is in suitable quality, can also guarantee that spherical valve body can not rust in long-time use to can improve life.

Further, the ball valve body can be a hollow valve body to ensure that the ball valve body is in proper quality.

In an embodiment of the present invention, in order to dispose the ball valve body in the cavity, the drain pipe may further include: a first female component and a second female component; the first concave part and the second concave part are both provided with concave grooves; and the number of the first and second groups,

the first concave part is provided with a first connecting piece, and the second concave part is provided with a second connecting piece corresponding to the first connecting piece;

the first connecting piece is connected with the second connecting piece, so that the first concave part and the second concave part form the drain pipe.

For example, the first and second connectors may be a snap and a catch.

When the drainage device is assembled, the spherical valve body can be placed in the concave groove of the first concave part or the second concave part, then the first connecting piece is connected with the second connecting piece, so that the first concave part and the second concave part are tightly connected to form the drainage pipe, the concave grooves of the first concave part and the second concave part form a cavity, and the spherical valve body is also arranged in the cavity, so that the drainage device is assembled.

It should be noted that, in order to dispose the ball valve body in the cavity, other manners may be used to implement the above-mentioned manner, for example, the drain pipe may include: the first circular pipe component and the second circular pipe component are respectively provided with a circular pipe; and a third connecting member provided on the first circular tube member, a fourth connecting member provided on the second circular tube member and corresponding to the third connecting member, wherein the third connecting member and the fourth connecting member are connected to each other when the ball valve body is placed in the circular tube of the first circular tube member or the second circular tube member.

In one embodiment of the present invention, in order to implement the installation of the drainage device on the water outlet of the fire hydrant, the external shape of the drainage device can be adjusted accordingly, for example, the drainage pipe is shaped with a certain angle, for example, the angle is a right angle, please refer to fig. 3.

Referring to fig. 4, an embodiment of the present invention further provides a fire fighting system, which may include: a hydrant 40 and at least one drainage device 10 as described in any of the above embodiments; wherein,

the hydrant 40 is used for outputting water from the water outlet to the drainage device 10.

Wherein the installation location of each drain on the hydrant may be different.

In order to install the drainage device on the fire hydrant, a clamping groove corresponding to the drainage device can be arranged at the water outlet of the fire hydrant, and the drainage device is arranged in the clamping groove. It should be noted that no matter how the drainage device is installed on the fire hydrant, it is required to ensure that at least one drainage device can realize the automatic opening and closing function of the water outlet of the fire hydrant.

In one embodiment of the present invention, the installation of the drainage device on the fire hydrant may be achieved by one of the following ways, please refer to fig. 5: the fire fighting system may further include: a plug cap 50; wherein,

the plug cover 50 is connected with the water outlet in the fire hydrant 40, and grooves corresponding to the drainage device 10 in number are formed in the plug cover 50;

each of the drainage devices 10 is disposed in a corresponding groove of the stopper cap 50.

Wherein, after being connected with the delivery port of fire hydrant in order to guarantee the gag, when the delivery port of fire hydrant goes out water, water can enter into drainage device's cavity, needs to be in the intercommunication state between delivery port and the recess to when the delivery port of fire hydrant goes out water, water can enter into drainage device's cavity through the recess.

In one embodiment of the invention, the plug cover can be connected with the water outlet of the fire hydrant at least in a threaded or waterproof glue sealing mode. Through the connected mode of this embodiment, can guarantee when drainage device takes place to block up or other situations, can realize drainage device's change through the mode of changing the gag to can reduce cost.

Because drainage device needs to install with suitable angle, when drainage device is installed to the gag through the mode of screw thread, can set up a plurality of recesses in the position of 360 degrees of gag, can install a drainage device in each recess, so, can guarantee that the gag is when screwing on the delivery port of fire hydrant, including at least one first drainage device, wherein, when the fire hydrant is used, the spherical valve body in the first drainage device blocks up corresponding slot, and when the fire hydrant is not used, the spherical valve body in the first drainage device is located corresponding slot to can realize the automatic function of opening and close of the delivery port of fire hydrant.

Since the fire fighting system is an important fire fighting device, remote monitoring of the status of the fire fighting system is required. In an embodiment of the present invention, referring to fig. 6, the fire fighting system may further include: electrode a, electrode b, and circuit board 60; wherein,

the electrode a and the electrode b are arranged on the fire hydrant;

when the electrode a and the electrode b are both in water, the electrode a and the electrode b are conducted; when at least one of the electrode a and the electrode b is not in water, the electrode a and the electrode b are disconnected;

the circuit board 60 is connected to the electrode a and the electrode b, respectively, and is configured to monitor a conduction state between the electrode a and the electrode b, and transmit the monitored conduction state.

The present embodiment monitors the use state of the fire hydrant by using the electrode a and the electrode b, when the fire hydrant is used, water is filled in the fire hydrant, so that the electrode a and the electrode b are both in water, since water is a conductive medium, conduction between the electrode a and the electrode b can be achieved, so that the use of the fire hydrant can be determined by the conduction state, when the fire hydrant is not used, water can be discharged by the drainage device, so that at least one of the electrode a and the electrode b is not in water, and the electrode a and the electrode b are in the disconnection state, so that the non-use of the fire hydrant can be determined by the disconnection state.

In order to monitor the conduction state of the electrode a and the electrode b, the circuit board 60 may include a monitoring circuit, which is connected to the electrode a and the electrode b, respectively, and is configured to monitor the high and low levels or the rising and falling edges between the electrode a and the electrode b, and send the conduction state between the electrode a and the electrode b to a remote server according to the monitoring result.

In one embodiment of the invention, in order to ensure that at least one of the electrode a and the electrode b is not in water when the fire hydrant is not in use, the horizontal position of the electrode a and/or the electrode b is higher than that of the at least one first drainage device, so that after water in the fire hydrant is drained through the first drainage device, the water line of the fire hydrant is lower than that of the electrode a and/or the electrode b, and therefore, the use state of the fire hydrant can be monitored.

In one embodiment of the invention, the electrode a, the electrode b and the circuit board can be arranged in the shell, so that the shell is arranged on the fire hydrant to realize the monitoring of the use state of the fire hydrant.

Further, in order to reduce the cost of the fire fighting system, the electrode a, the electrode b and the circuit board are all arranged in the plug cover, so that when the plug cover is connected with the water outlet of the fire hydrant, the electrode a and the electrode b can extend into the fire hydrant.

Referring to fig. 7, an embodiment of the present invention further provides a method for using the fire fighting system, where the method may include the following steps:

step 701: opening the fire hydrant, which outputs water from the water outlet to the drainage device;

step 702: the cavity receives water flowing from the water outlet of the fire hydrant through the wide opening, and the ball valve body moves to the narrow opening along the slope under the pushing of the water so as to block the narrow opening;

step 703: and closing the fire hydrant, moving the ball valve body to the wide opening along the slope, and discharging water in the cavity from the narrow opening.

In one embodiment of the present invention, in order to monitor the use state of the fire hydrant, the following method can be used to implement:

after the ball valve body moves along the slope to the narrow opening to block the narrow opening, the ball valve further comprises: the circuit board monitors that the conduction state between the electrode a and the electrode b comprises conduction, and sends the conduction state comprising conduction;

after the water in the cavity is discharged from the narrow opening, the method further comprises the following steps: and the circuit board monitors that the conducting state between the electrode a and the electrode b comprises disconnection, and sends the conducting state comprising disconnection.

For a further understanding of the installation of the drain and the use of the fire protection system, the installation of the drain and the use of the fire protection system will now be described with reference to FIG. 8, which may include:

step 801: and setting the mass of the ball valve body of the slope of the first concave part and the second concave part in the water discharge pipe when the first concave part and the second concave part form a cavity according to the pressure of water when the fire hydrant is used and the corresponding maximum pressure of water when the fire hydrant is used.

When the first concave part and the second concave part in the drainage form a cavity and the mass of the spherical valve body with the slope of the slope is set, the following first formula and second formula need to be satisfied:

the first formula includes:

$\left\{\begin{array}{c}{F}_{0}sin\mathrm{\&theta;}>Gcos\mathrm{\&theta;}+f_0\\ k=\tan \mathrm{\&theta;}\end{array}\right.$

the second formula includes:

$\left\{\begin{array}{c}{F}_{1}sin\mathrm{\&theta;}<Gcos\mathrm{\&theta;}-f_1\\ k=\tan \mathrm{\&theta;}\end{array}\right.$

wherein k is used to characterize the slope of the ramp; f₀A push force for characterizing movement of the ball valve body along a ramp the "/\" shaped structure has to the narrow opening to block the corresponding water received from the wide opening when the narrow opening is closed; f₁The pushing force is used for representing the corresponding water received from the wide port when the ball valve body moves to the wide port along the slope; (ii) a G is used for representing the gravity of the ball valve body; f. of₀The device is used for representing the friction force of the slope acting on the ball valve body during the process that the ball valve body moves to the narrow opening along the slope of the '/\\' shaped structure; f. of₁The slope is used for representing the friction force acting on the ball valve body during the process that the ball valve body moves to the wide opening along the slope; theta is used for representing the included angle between the slope and the horizontal direction.

Step 802: the spherical valve body is placed in the concave groove of the first concave part or the second concave part, and the first connecting piece arranged on the first concave part and the second connecting piece arranged on the second concave part are tightly connected to form the drainage device.

Step 803: 4 grooves are respectively arranged on different directions of the plug cover, and 4 drainage devices are respectively arranged in the corresponding grooves, wherein the narrow opening of each drainage device is communicated with the outside air.

Step 804: the plug cover is screwed on the water outlet of the fire hydrant, and after the plug cover is screwed, the function that the water outlet of the fire hydrant can be automatically opened and closed by at least one first drainage device is guaranteed.

Step 805: the circuit board, the electrode a and the electrode b are arranged on the fire hydrant.

Step 806: when the fire hydrant is used, water enters the cavity of the first drainage device, the pressure of the water pushes the spherical valve body in the first drainage device to the narrow opening, the narrow opening is blocked, and the electrode a and the electrode b are both located in the water.

Step 807: and the circuit board monitors that the electrode a and the electrode b are conducted, and sends the conduction state to a remote server, and the remote server knows that the fire hydrant is in use.

Step 808: when the fire hydrant is used, the spherical valve body slides down to the wide opening from the slope, so that the cavity is communicated with the outside air, water in the cavity is discharged from the narrow opening, and the electrode a and/or the electrode b are not in the water discharging process.

Step 809: and the circuit board monitors that the electrode a and the electrode b are disconnected, the disconnected state is sent to a remote server, and the remote server knows that the fire hydrant is used up.

In summary, the embodiments of the present invention have at least the following advantages:

1. in the embodiment of the invention, since the drainage pipe of the drainage device is provided with the cavity, one end of the cavity is formed into the '/\\' shaped structure, and the ball valve body is arranged in the cavity, the cavity can be used for receiving water flowing from the water outlet of the fire hydrant through the wide opening of the '/\' shaped structure, when the fire hydrant is used, the ball valve body can move to the narrow opening along the slope of the '/\' shaped structure under the pushing of the water received from the wide opening due to high water pressure, so as to block the narrow opening, and when the fire hydrant is not used, the ball valve body can move to the wide opening along the slope due to low water pressure, so that the water in the cavity is discharged from the narrow opening. Therefore, the scheme can automatically open and close the water outlet of the fire hydrant.

2. In the embodiment of the invention, the slope of the slope and the gravity of the spherical valve body meet the corresponding formula, so that the spherical valve body can be pushed to a narrow opening along the slope by the pressure of water when the fire hydrant is used, and the spherical valve body can slide to a wide opening from the slope when the fire hydrant is not used, thereby realizing the automatic opening and closing function of the water outlet of the fire hydrant.

3. In the embodiment of the invention, the diameter of the spherical valve body is set to be larger than the caliber of the narrow opening, and the contact surface between the narrow opening and the spherical valve body is set to be circular, so that the cavity can be isolated from the outside air as far as possible when the narrow opening is blocked by the spherical valve body, and water is prevented from flowing out of the gap when the fire hydrant is used.

4. In the embodiment of the invention, the spherical valve body is arranged to be the plastic valve body or the rubber valve body, so that the spherical valve body can be ensured to be in proper quality, and the spherical valve body can be ensured not to rust in the long-time use process, thereby prolonging the service life of the drainage device.

5. In the embodiment of the invention, the drainage device is arranged in the groove of the plug cover and is connected with the water outlet of the fire hydrant by the plug cover, so that the drainage device can be connected with the fire hydrant.

6. In the embodiment of the invention, the plurality of drainage devices are arranged on the plug cover in all directions, so that at least one first drainage device can realize the automatic opening and closing function of the water outlet of the fire hydrant no matter the plug cover is screwed on the water outlet of the fire hydrant.

7. In the embodiment of the invention, the circuit board, the electrode a and the electrode b are arranged on the fire hydrant, so that when the fire hydrant is used, the electrode a and the electrode b are both in water, and when the fire hydrant is not used, the electrode a and/or the electrode b are not in water, the circuit board sends the conducting state to the remote server by monitoring the conducting state of the electrode a and the electrode b, and the remote server can determine the using state of the fire hydrant according to the conducting state.

Because the information interaction, execution process, and other contents between the units in the device are based on the same concept as the method embodiment of the present invention, specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A drain device, for installation on a fire hydrant, the drain device comprising: a drain pipe and a spherical valve body; wherein,

the drain pipe is provided with a cavity, and one end of the cavity forms a '/\\' shaped structure; wherein the "/\" shaped structure has a wide mouth in communication with the water outlet of the hydrant and a narrow mouth in communication with the outside air;

the spherical valve body is arranged in the cavity;

the cavity can be used for receiving water flowing from the water outlet of the fire hydrant through the wide opening, and the ball valve body can move to the narrow opening along the slope of the '/\\' shaped structure under the pushing of the water received from the wide opening so as to block the narrow opening;

the ball valve body can move along the slope to the wide opening to discharge the water in the cavity from the narrow opening.

2. The drain device according to claim 1, wherein a slope of the slope and a gravity of the ball valve body satisfy the following first and second formulas:

the first formula includes:

$\left\{\begin{array}{c}{F}_{0}sin\mathrm{\&theta;}>Gcos\mathrm{\&theta;}+f_0\\ k=\tan \mathrm{\&theta;}\end{array}\right.$

the second formula includes:

$\left\{\begin{array}{c}{F}_{1}sin\mathrm{\&theta;}<Gcos\mathrm{\&theta;}-f_1\\ k=\tan \mathrm{\&theta;}\end{array}\right.$

wherein k is used to characterize the slope of the ramp; f₀A push force for characterizing movement of the ball valve body along a ramp the "/\" shaped structure has to the narrow opening to block the corresponding water received from the wide opening when the narrow opening is closed; f₁The pushing force is used for representing the corresponding water received from the wide port when the ball valve body moves to the wide port along the slope; g is used for representing the gravity of the ball valve body; f. of₀The device is used for representing the friction force of the slope acting on the ball valve body during the process that the ball valve body moves to the narrow opening along the slope of the '/\\' shaped structure; f. of₁The slope is used for representing the friction force acting on the ball valve body during the process that the ball valve body moves to the wide opening along the slope; theta is used for representing the included angle between the slope and the horizontal direction.

3. The drain device of claim 1, wherein the drain pipe comprises: a first female component and a second female component; wherein,

the first concave part is provided with a first connecting piece, and the second concave part is provided with a second connecting piece corresponding to the first connecting piece;

when the first connecting piece is connected with the second connecting piece, the first concave part and the second concave part form the drain pipe.

4. A drainage arrangement according to any of claims 1-3,

the spherical valve body is a plastic valve body or a rubber valve body;

and/or the presence of a gas in the gas,

the spherical valve body is a hollow valve body.

5. A fire fighting system, comprising: a fire hydrant and at least one drainage device according to any one of claims 1 to 4;

the fire hydrant is used for outputting water to the drainage device from the water outlet.

6. A fire protection system as recited in claim 5, further comprising: a plug cover; wherein,

the plug cover is connected with the water outlet of the fire hydrant, and grooves corresponding to the drainage devices in number are formed in the plug cover;

each drainage device is arranged in a corresponding groove of the plug cover.

7. A fire fighting system as defined in claim 6,

the plug cover is connected with the water outlet of the fire hydrant in a thread or waterproof glue sealing mode;

and/or the presence of a gas in the gas,

when the plug cover is connected with the water outlet of the fire hydrant, the at least one drainage device comprises at least one first drainage device; wherein,

when the fire hydrant is used, the ball valve body of the first drainage device plugs the corresponding narrow opening, and when the fire hydrant is not used, the ball valve body of the first drainage device is positioned at the corresponding wide opening.

8. A fire fighting system as defined in claim 7,

further comprising: electrode a, electrode b and circuit board; wherein,

the electrode a and the electrode b are arranged on the fire hydrant;

when the electrode a and the electrode b are both in water, the electrode a and the electrode b are conducted; when at least one of the electrode a and the electrode b is not in water, the electrode a and the electrode b are disconnected;

the circuit board is respectively connected with the electrode a and the electrode b and is used for monitoring the conduction state between the electrode a and the electrode b and sending the monitored conduction state;

the horizontal position of the electrode a and/or the electrode b is higher than the horizontal position of the at least one first drainage device.

9. A method of using the fire fighting system of any of claims 5 to 8, comprising:

opening the fire hydrant, which outputs water from the water outlet to the drainage device;

the cavity receives water flowing from the water outlet of the fire hydrant through the wide opening, and the ball valve body moves to the narrow opening along the slope under the pushing of the water so as to block the narrow opening;

and closing the fire hydrant, moving the ball valve body to the wide opening along the slope, and discharging water in the cavity from the narrow opening.

10. Use according to claim 9,

after the ball valve body moves along the slope to the narrow opening to block the narrow opening, the ball valve further comprises: the circuit board monitors that the conduction state between the electrode a and the electrode b comprises conduction, and sends the conduction state comprising conduction;

after the water in the cavity is discharged from the narrow opening, the method further comprises the following steps: and the circuit board monitors that the conducting state between the electrode a and the electrode b comprises disconnection, and sends the conducting state comprising disconnection.