KR20230037934A - Waterproof type valve box for fluid control system - Google Patents

Abstract

Disclosed in the present invention is a waterproof valve box for a fluid control system. The waterproof valve box for a fluid control system comprises: an enclosure installed in the ground or in a buried or exterior type; an electric valve disposed inside the enclosure, connected to a pipe, and opening and closing the flow of the fluid transported through the pipe; and a communication card box containing a communication card capable of transmitting and receiving control signals for controlling the flow of the fluid through communication with a control unit. At least one of the electric valve and the communication card box is filled with an electrically insulating waterproofing agent made of any one selected from polybutene and insulating oil or a mixture thereof in an internal space.

Description

Watertight valve box of fluid control system {WATERPROOF TYPE VALVE BOX FOR FLUID CONTROL SYSTEM}

The present invention relates to a waterproof valve box of a fluid control system, and more particularly, to a communication card box capable of transmitting and receiving control signals for controlling the flow of fluids such as water or gas, and remotely opening and closing pipes. It relates to a waterproof valve box of a fluid control system having a motorized valve that can be used.

In general, fine dust is one of the main air pollutants, and harmful substances such as sulfur oxides, nitrogen oxides, volatile organic compounds, and heavy metals are attached to the surface of the particles, and cause serious harm to human health by depositing in the alveoli or bronchi.

Among the fine dust, the dust accumulated on the pavement is re-dispersed due to the operation of the vehicle is referred to as "road ash scattering dust". Road ash scattering dust is deposited on the road surface by various causes such as direct emission from vehicle exhaust gas, wear of automobile tires and road surfaces, wear dust of automobile brake pads, falling dust, garbage, mud and dust, etc. Then, it is generated by scattering again by the movement of the vehicle. In order to reduce such road ash scattering dust, conventionally, a method of spraying water on a road surface while operating a dedicated water cleaning vehicle has been widely used.

However, the road surface watering method using a vehicle has a weakness in that a water source must be frequently visited during cleaning to secure water. In addition, since the water cleaning vehicle must operate at low speed during cleaning, there is a risk of interfering with the operation of other vehicles, and it is difficult to clean the lower part of the vehicle parked on the road using the vehicle, so there is a disadvantage that additional personnel must be put in .

As a technique proposed to solve the above problems, Patent Document 1 includes a storage tank in which cleaning water containing gray water and / or ground water is stored and installed underground, and one end is connected to the storage tank and the other end is connected to the upper part of the paved road surface to the lower center. A water pipe extending to, a water pipe connected to the water pipe and extending along the direction of travel of the vehicle under the central portion of the paved road surface, one end connected to the water pipe and the other end extending upward to the central portion of the paved road surface in the longitudinal direction of the water pipe A plurality of branch pipes spaced apart from each other, a plurality of sprinkling nozzles connected to these branch pipes and spraying cleaning water perpendicularly to the traveling direction of the vehicle, and a water storage tank to control the flow pressure of the cleaning water and the spray pressure of the spray nozzles. An automatic water cleaning device for a paved road equipped with a pressure pump provided is disclosed.

However, the conventional automatic water cleaning device for paved roads did not collect foreign substances or air contained in heavy water, so the spray nozzle was clogged or the spray pressure was reduced, which made it inconvenient to use in the field. Since the nozzles must be fastened individually using a tool, it takes a long time to fasten, which increases the fastening cost, and in order to water the road, the person in charge must go to the site and check the watering one by one before starting it.

As an alternative, as disclosed in Patent Document 2, a technique for removing dust or foreign substances on the road surface by spraying a washing liquid or a calcium chloride solution using a spray nozzle fused to a road marker installed on the road surface has been proposed. Road markers are safety devices that induce traffic safety and smooth flow of vehicles by identifying lanes to drivers at night or on cloudy days by being installed on the median divider of the road, lane boundary, or around a crossing.

Spray nozzles and the like fixedly installed on the road surface may be remotely controlled by communicating with a remote control device of a remote central control room through a predetermined control panel installed at a predetermined location. To this end, a valve box is installed on the road or near the road to control the injection nozzles individually or by zone. Inside the valve box, a motorized valve connected to the injection pipe and a communication card for connecting each injection nozzle to the control panel are installed.

However, the conventional electric valve installed in the valve box has a problem that leakage, short circuit, noise, etc. or communication error occurs easily when the circuit board is exposed to moisture or flooded due to the environment installed in the valve box. need this

Patent Document 1: Korean Patent Registration No. 10-1121490 Patent Document 2: Korean Patent Registration No. 10-0750937

The present invention was invented to solve the above problems, and it is possible to prevent the internal parts of the communication card box and / or electric valve for remotely controlling the flow of various fluids transported through the pipeline from being exposed to moisture. The purpose is to provide a waterproof valve box of a fluid control system having a structure.

In order to achieve the above object, the present invention is an enclosure installed in a buried or external type in the ground or on the ground; a motorized valve disposed inside the enclosure, connected to a pipe, and opening and closing the flow of the fluid transported through the pipe; and a communication card box accommodating a communication card capable of transmitting and receiving control signals for controlling the flow of the fluid through communication with a control unit, wherein at least one of the electric valve and the communication card box is installed in an internal space. It provides a waterproof valve box of a fluid control system, characterized in that filled with an electrically insulating waterproofing agent made of any one selected from polybutene and insulating oil or a mixture thereof.

The conduit may be any one selected from among a pipe for transporting liquid including water for clean road or salt water for preventing road freezing, a water supply pipe for transporting constant water, and a gas pipe for transporting gas.

The motorized valve is configured by assembling an upper case and a lower case in the casing, and a motor providing rotational force capable of opening and closing the valve body to an inner space of any one of the upper case and the lower case, and the motor and power supply. / A circuit board to which a communication line is connected is disposed, and a reduction gear assembly connected to the rotation shaft of the motor to reduce the rotational speed is disposed in the other inner space, and one side of the casing receives rotational force from the reduction gear assembly. The valve body, which receives and opens and closes, is accommodated, and a connection socket having at least two entrances connected to the pipe is fixed, and when the electrical insulating waterproofing agent is injected, the motor, the reduction gear assembly, and the circuit board are all electrically operated. It can be immersed in an insulating waterproofing agent.

In the electric valve, at least one of the upper case and the lower case is formed with a separate fluid inlet for injecting the electrical insulating waterproofing agent into the inner space in a state in which the casing is assembled, and the fluid inlet has a sealing cap. This seal can be screwed together.

It is preferable that the viscosity of the electrical insulating waterproofing agent filled in the inner space where the motor and the circuit board are disposed is relatively higher than the viscosity of the electrically insulating waterproofing agent filled in the internal space where the reduction gear assembly is disposed.

The communication card box may include a lower case and cover accommodating the communication card, and a packing member interposed between the lower case and cover to be waterproof, and may be housed in an enclosure of the valve box.

It may further include a moisture collecting unit disposed on one side of the inner space of the communication card box and made of super absorbent polymer (SAP).

Preferably, polybutene having a viscosity of 10,000 to 30,000 cSt at room temperature between 20 °C and 25 °C may be injected as the electrical insulating waterproofing agent.

The waterproof valve box of the fluid control system according to the present invention has the following effects.

First, it is possible to prevent the occurrence of electric leakage, short circuit, malfunction, etc. by preventing the motor and circuit board from being exposed to moisture by the electric insulating waterproofing agent filled in the communication card box and the motorized valve.

Second, it is possible to improve both workability and watertightness by optimizing the viscosity of the electrical insulating waterproofing agent.

Third, by injecting polybutene or insulating oil into the communication card box and the electric valve, it is possible to construct an electrically insulating waterproofing agent that is easy to work with and has excellent leakage prevention effect.

Fourth, even if the reduction gear assembly is completely submerged in the insulating oil, the reduction gear can be smoothly operated due to the lubricity of the insulating oil.

Fifth, when the electrically insulating waterproofing agent is insulating oil, moisture having a relatively higher specific gravity than that of the insulating oil when moisture penetrates does not fall onto the circuit board but onto the super absorbent polymer, thereby preventing a short circuit of the circuit board.

Sixth, by using a simple structure in which double-sided tape is disposed inside the communication card box, powder of superabsorbent resin can be fixed to the inner wall of the communication card box.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is the details described in such drawings should not be construed as limited to
1 is an overall configuration diagram of a fluid control system having a waterproof valve box according to an embodiment of the present invention.
Figure 2 is a perspective view showing the configuration of the waterproof valve box in Figure 1;
Figure 3 is a cross-sectional view showing the configuration of the motorized valve in Figure 2;
4 is an exploded perspective view showing the configuration of the communication card box in FIG. 2;
Figure 5 is a combined cross-sectional view of Figure 4;
FIG. 6 is a partially enlarged cross-sectional view showing a configuration in which a moisture collecting unit is added in FIG. 5 .
7 is an overall configuration diagram of a fluid control system having a waterproof valve box according to another embodiment of the present invention.
Figure 8 is a perspective view showing the configuration of the waterproof valve box in Figure 7;

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

1 is an overall configuration diagram of a fluid control system having a waterproof valve box according to an embodiment of the present invention.

Referring to FIG. 1, a fluid control system having a waterproof valve box according to an embodiment of the present invention includes a reservoir 100 in which fluid is stored, a water level sensor installed on one side of the reservoir 100, and a reservoir ( A pump 104 for pumping the liquid discharged from 100), a control unit 106 for controlling the operation of the pump 104 and the electric valve 109, and installed on the center dividing line or lane boundary of the road to the road surface A plurality of injection nozzles 112 for injecting the liquid, a water supply pipe 111 for supplying the liquid whose flow rate and pressure are controlled by the pump 104 to the plurality of injection nozzles 112, and the injection of the liquid It includes a communication card box 110 equipped with a communication card 110a capable of transmitting and receiving control signals for adjustment.

The water level sensor is installed on one side of the inside of the storage tank 100 to measure the level of the liquid for clean road or the liquid for preventing road icing to be used for spraying on the road. The water level sensor may be composed of various water level measuring means such as an ultrasonic sensor, a float type sensor by elevating a buoy, a laser sensor, and a graduated water level gauge.

The storage tank 100 has an internal space capable of accommodating a clean rod or a liquid for preventing road icing made of a mixture of ground water, water, or tap water or a deicing agent. In the upper part of the storage tank 100, an inlet consisting of an inlet and a cover for inputting clean rod water is provided, and a discharge part consisting of a pipe for discharging the stored water to the outside is provided in the lower part. The fluid control system according to the present invention is used as a clean road injection system that uses water from underground water or rainwater storage tanks in summer, and is a salt water injection system for preventing road icing that melts snow accumulated on roads by containing snow removal agents such as calcium chloride in winter. available. Alternatively, the storage tank 100 may store water used for water supply or gas of a gas supply facility. In this case, the fluid control system according to the present invention can be used as a gas management system. Hereinafter, the configuration of the present invention will be described focusing on an embodiment in which the storage tank 100 accommodates the liquid for clean rod or the liquid for preventing road icing.

The pump 104 is connected to the outlet of the storage tank 100 through a predetermined pipe and pumps the liquid discharged from the storage tank 100 at a predetermined flow rate and pressure. The pump 104 is preferably provided with at least two or more, and one of them serves as an auxiliary pump.

The air supply device 103 is installed on one side of the pipe connected to the storage tank 100 and supplies air to discharge the remaining fluid in the pipe to the outside through the spray nozzle 112. The air supply device 103 may be connected to a separate air compressor, and alternatively, the air supply device 103 itself may be configured as an air compressor. When the road surface washing mode ends, the air supply device 103 discharges all remaining water for clean rods such as underground water, water, or tap water with air pressure to prevent the pipes from freezing and bursting in winter. In addition, when the road icing prevention mode ends at the end of the winter season, it plays a role in discharging all of the salt water remaining in the pipe with air pressure. If salt water is sprayed on the road surface outside of the winter season, it may cause a traffic accident by making the road surface slippery. The air supply device 103 serves to prevent salt water from being sprayed during the road surface washing mode by discharging salt water remaining in the pipe through the spray nozzle 112 when the road icing prevention mode ends.

The liquid discharged from the reservoir 100 and pumped by the pump 104 is supplied to the water supply pipe 111 via the main pipe 105.

The water supply pipe 111 is installed to extend along the road or around the road, transports the liquid pumped by the pump 104, and supplies it to the spray nozzle 112. The water supply pipe 111 may be buried in the ground under the road surface, and at least a part of it may be exposed to the outside as needed. As described above, when constant is stored or gas is stored in the storage tank 100, a water supply pipe 111 is used to transport constant water or a gas pipe to transport gas.

The control unit 106 controls the operation of the pump 104 to adjust the flow rate and pressure of the liquid, to control on/off, and the like. The control unit 106 communicates with the remote control device 107 consisting of a remote control system including a mobile phone (smart phone) 103a and/or a central control device 103b, which is a computer installed in a central control room, Can be controlled remotely. The remote control device 107 may perform data communication with the control unit 106 through wired or wireless Internet or various serial communications. Specifically, communication between the remote control device 107 and the control unit 106 may be performed according to at least one communication protocol selected from Ethernet, CAN, CDMA, RS422, RS232 and RS485. At least one communication protocol selected from among Ethernet, CDMA, RS422, RS232 and RS485 can be used for communication between the control unit 106, the reservoir 100, the pump 104, the sensing unit 113, and the motorized valve 109.

For wireless communication, various wireless communication standards such as CDMA, LTE, and 5G, as well as IoT-related communication standards such as Bluetooth, LoRa communication, and NB-IOT, may be adopted.

The injection nozzle 112 is preferably fixedly installed on the lane boundary of the road or the road to spray the liquid onto the road surface. A predetermined support member or structure supporting the injection nozzle 112 may be exposed to the outside of the road or buried. As the spray nozzle 112, various types of nozzles such as a general type nozzle that sprays at a predetermined angle, a marker type nozzle, and a line guide rod type nozzle may be employed.

The sensing unit 113 detects the spraying state and the standby state of the spray nozzle 112, and through the control unit 106, the remote control device 107 made of a remote control system including a mobile phone 107a or a central control device 107b. ) is sent to The detector 113 includes a fine dust sensor for detecting fine dust, at least one selected from sulfur oxides, nitrogen oxides, volatile organic compounds and radon, and other harmful substances determined by the Ordinance of the Ministry of Environment. A sensor for detecting fine dust, At least one of a temperature and humidity sensor for detecting temperature and humidity, a rainfall sensor for detecting the amount of snow or rain, and a road surface sensor for checking the state of snow or rain accumulated on the road surface. In addition, the detection signal output from the detection unit 113 is transmitted to the control unit 106 through the communication card box 114.

In addition, around the detector 113, a video surveillance camera 116 that allows real-time checking of the spraying state, etc., a liquid crystal display that displays the spraying state of liquid spraying, the concentration of fine dust, and the weather condition, etc. An information display unit 117 made of may be disposed. In addition, an information display board 118 and a speaker may be installed on one side of the periphery to guide and control the on-site situation in real time.

The information display board 118 is installed on a predetermined support in the center of the road or on the ground around the road, for example, as an LED display board, and phrases "water spraying" or "safe driving" for vehicles entering the section where the spray nozzle 112 is installed. display The information display board 118 displays the phrase "water spraying" before the vehicle enters the section where the spray nozzle 112 is installed, guiding the vehicle driver to recognize the water spraying state in advance, and the spray nozzle 112 In the case of a vehicle exiting the installed section or a situation in which water injection is stopped, the phrase "Safe driving" is displayed to alert the driver's attention.

The valve box 108 is installed in an external or buried type exposed to the outside on the road surface or around the road. As shown in FIG. 2, the valve box 108 includes a housing 108a having a predetermined shape, an electric valve 109 accommodated in the housing 108a to control the opening and closing of the water supply pipe 111, and a housing 108a. ) The communication card box 110 connected to the motorized valve 109 to perform communication inside, and the electric insulating waterproofing agent (P) filled in the internal space of the motorized valve 109 and the internal space of the communication card box 110, respectively ).

The valve box 108 may be disposed corresponding to each injection nozzle 112 one by one. This method can be applied to a salt water spray system in which each spray nozzle 112 is disposed at a wide interval of, for example, several tens of meters. Alternatively, as shown in FIG. 6 , the valve box 108 may be disposed one by one for each injection area including a plurality of injection nozzles 112 . At this time, the valve box 108 collectively controls the plurality of injection nozzles 112 included in the corresponding injection area. This method can be applied to a cooling rod system in which a plurality of injection nozzles 112 are relatively densely disposed to clean or cool a road surface with a furnace.

The housing (108a) is made of a metal material such as stainless steel, preferably made of a rectangular tubular body as a whole. The enclosure 108a is manufactured in an open top surface and is opened and closed by the enclosure cover 108b.

The electric valve 109 is connected to the water supply pipe 111 penetrating the enclosure inside the enclosure 108a to control the opening and closing of the water supply pipe 111. Liquid may be selectively supplied to the corresponding spray nozzle 112 by opening the motorized valve 109 . The motorized valve 109 may control liquid supply in one-to-one correspondence with each injection nozzle 112 .

As shown in FIG. 3, the motorized valve 109 is constructed by assembling a casing 10, an upper case 11, and a lower case 12 together. In the inner space of either the upper case 11 or the lower case 12 (preferably, the upper case), a motor 13 providing rotational force capable of opening and closing the valve body 20, and a power/communication line 1 A circuit board 15 to which the wire strands 2 of ) are connected is disposed, and a reduction gear assembly 14 connected to the rotational shaft of the motor 13 to reduce the rotational speed is disposed in the other inner space. . The power/communication line 1 is fastened to one side of the casing 10 through a PG connector 16.

At one side of the casing 10, a valve body 20 of the ball valve type, which is opened and closed by receiving rotational force from the reduction gear assembly 14, is accommodated and at least two or more entrances connected to the water supply pipe 111 are formed. The connecting socket 21 is fixed.

The motor 13, the reduction gear assembly 14, and the circuit board 15 housed inside the electric valve 109 are all kept submerged in the electrical insulating waterproofing agent P.

The electrical insulating waterproofing agent (P) is composed of insulating oil, polybutene (polybutylene, PB), or a mixture of insulating oil and polybutene. The viscosity of the electrically insulating waterproofing agent (P) filled in the internal space where the motor 13 and the circuit board 15 are disposed is higher than the viscosity of the electrically insulating waterproofing agent (P) filled in the internal space where the reduction gear assembly 14 is disposed. Relatively high is preferred. When the electrically insulating waterproofing agent (P) is polybutene, the above-described viscosity differentiation may be achieved by using polybutenes having different viscosity characteristics against the same temperature. When the electrically insulating waterproofing agent (P) is a mixture of insulating oil and polybutene, it may be achieved by optimizing whether and the mixing ratio of insulating oil and polybutene are mixed. That is, only polybutene is used as the electrical insulating waterproofing agent (P) filled in the internal space where the motor 13 and the circuit board 15 are disposed, and the electrical insulating waterproofing agent (P) filled in the internal space where the reduction gear assembly 14 is disposed. ), it is preferable to use a mixture having a weight ratio of polybutene and insulating oil of 2:1 to 5:1. A mixture of polybutene and insulating oil that satisfies the weight ratio range has a remarkable effect of having fluidity to the extent of not interfering with the rotational motion of the reduction gear assembly 14 without leaking to the outside of the casing 10 .

At least one of the upper case 11 and the lower case 12 has a separate fluid injection port 11a for injecting the electrically insulating waterproofing agent P into the inner space in the assembled state of the casing 10, A sealing cap 19 is screwed into the fluid inlet 11a to be sealed.

The rod-shaped body 20 is connected to the center of the final gear of the reduction gear assembly 14, and the end of the rod-shaped body 20 is connected to the status display unit 18. In the state display unit 18, a rotating plate 18 displaying the open or closed state of the valve body 22 is housed in the cylindrical body 17.

The valve body 22 is installed inside the connection socket 21 fixed to one side of the casing 10 . The valve body 22 is opened and closed by receiving rotational force from the reduction gear assembly 14 . At least two entrances connected to the pipe 111 are formed in the connection socket 21 .

When the electrically insulating waterproofing agent (P) is injected, the motor 13, the reduction gear assembly 14, and the circuit board 15 are all submerged in the electrically insulating waterproofing agent (P). The electrically insulating waterproofing agent (P) maintains a liquid or high-viscosity gel state in a state filled in the casing 10 .

As shown in FIGS. 4 and 5, the communication card box 110 communicates with the control unit 106 and has a communication card 110a, which is a circuit board capable of transmitting and receiving control signals for controlling the injection of the liquid. It is fixed to the floor surface.

In a state where the communication card 110a is fixed in the communication card box 110, the inner space of the communication card box 110 is filled with an electrically insulating waterproofing agent P made of any one selected from insulating oil and polybutene or a mixture thereof. When the electrical insulating waterproofing agent (P) is polybutene, the viscosity (kinematic viscosity) is preferably 10,000 to 30,000 cSt at room temperature between 20 ° C and 25 ° C when considering both workability and watertightness. If the viscosity is less than 10,000 cSt, the waterproofing agent flows into the gap around the power / communication cables (110g, 110h) connected to the communication card box (110) and leaks may occur, and if the viscosity exceeds 30,000 cSt, fluidity This is not good, so the workability of injecting the waterproofing agent into the communication card box is significantly reduced. More preferably, the viscosity of the polybutene used as the electrically insulating waterproofing agent (P) is suitably 25,000 cSt at room temperature between 20°C and 25°C.

The communication card box 110 is accommodated inside the enclosure 108a and is connected to the motorized valve 109 to drive the motorized valve 109 according to a control signal transmitted from the control unit 106. In addition, the communication card box 110 performs a function of transmitting a detection signal for an operating state such as on/off of the motorized valve 109 to the control unit 106.

The communication card box 110 includes a lower case 110b having a size that can be accommodated in the inner space of the valve box 108, a communication card 110a, which is a communication card fixed to the inner bottom surface of the lower case 110b, A cover 110c assembled on the top of the lower case 110b to open and close the upper surface of the lower case 110b, and a packing member 110e interposed to be waterproof between the lower case 110b and the cover 110c. do.

The lower case 110b is composed of a rectangular container made of synthetic resin with an open upper surface. The cover 110c covering the upper surface of the lower case 110b is preferably made of a transparent material such as, for example, an acrylic plate. The cover 110c is assembled to the top of the lower case 110b by bolts 110d fastened to the four corners of the lower case 110b.

At least one of the lower case 110b and the cover 110c has a separate fluid injection port 110m for injecting the electrical insulating waterproofing agent P into the inner space while the cover 110c is covered. After the injection of the electrically insulating waterproofing agent P is completed, the sealing cap 110p is screwed into the fluid inlet 110m through the O-ring 110r so as to be sealed.

Electronic components for providing a communication function are mounted on the communication card 110a. Among the electronic components, the transformer 110j for power (voltage) conversion preferably has a capacity set to generate heat at a predetermined temperature in order to remove moisture inside the lower case 110b.

The packing member 110e is a sealing material in the shape of a closed curve extending along the periphery of the lower case 110b or cover 110c and is preferably made of rubber or silicon. In a state where the cover 110c is coupled to the upper surface of the lower case 110b, the packing member 110e is interposed between the lower case 110b and the cover 110c to perform a waterproof function.

The communication cables 110g and 110h and the power cable 110f are connected to the side of the lower case 110b of the communication card box 110 to be waterproof. At this time, it is preferable that the communication cables 110g and 110h and the power cable 110f are tightly coupled to the side of the lower case 110b by a normal PG connector. On the inner surface of the lower case 110b, the gap between the core wires 3 and the outer sheath in the communication cables 110g and 110h and the power cable 110f led into the lower case 110b further enhances the waterproof performance A superabsorbent polymer may be filled for this purpose.

The communication cables 110g and 110h include an input communication cable 110g and an output communication cable 110h connected to one side and the other side of the lower case 110b. The communication card box 110 performs a repeater function through the input-side communication cable 110g and the output-side communication cable 110h, so that signals can be transmitted between different communication card boxes 110 without signal attenuation. That is, even if the communication card boxes 110 are arranged up to an area several kilometers away from the control unit 106, the signal is processed and transmitted so that the signal is maintained at a predetermined level in the communication card box 110, so that the communication card box located at a long distance without attenuation of the signal. Smooth communication can be made between 110 and the control unit 106.

A shield wire (not shown) embedded in the input-side communication cable 110g and the output-side communication cable 110h is connected to each other inside the lower case 110b. To this end, a shield wire (not shown) electrically connecting the shield wire of the input-side communication cable 110g and the output-side communication cable 110h to each other is disposed inside the lower case 110b. The shield wire extends from the inside of the lower case 110b to the periphery of the communication card 110a to connect the shield wire of the input-side communication cable 110g and the output-side communication cable 110h to each other.

Additionally, the communication card box 102 is also connected to the main valve 101 connected to the outlet of the storage tank 100 so that the control unit 106 can control the main valve 101. In addition, it is preferable that the communication card box 114 is additionally connected to the sensing unit 113 to transmit the signal sensed by the sensing unit 113 to the control unit 106. At this time, the configuration of the communication card box 114 is configured in the same waterproof type as the communication card box 110 described above.

As shown in FIG. 6, a moisture collecting unit 120 made of superabsorbent polymer (SAP) is installed on a part of the inner wall of the lower case 110b of the communication card box 110 to remove moisture penetrating into the electrical insulating waterproofing agent P. perform a collecting function. Preferably, the moisture collecting unit 120 is attached to and fixed to one side of the double-sided tape 121. At this time, the other side of the double-sided tape 121 is attached to one inner wall of the lower case 110b. According to this configuration, when the electrically insulating waterproofing agent (P) is insulating oil, the communication card box 110 is placed upright in the valve box 108 so that moisture, which has a relatively higher specific gravity than that of insulating oil, penetrates into the circuit board. It has the advantage of being able to prevent a short circuit of the circuit board by allowing it to fall on the superabsorbent polymer without falling.

7 is an overall configuration diagram of a fluid control system having a waterproof valve box according to another embodiment of the present invention, and FIG. 8 is a perspective view showing the configuration of the waterproof valve box in FIG. 7 . In the drawings, the same reference numerals as those of the above-described embodiment denote the same components.

Referring to FIGS. 7 and 8, the valve box 115 is coupled to a housing 115a made of a metal material and having an open upper surface, and to an upper end of the housing 115a to open and close the housing 115a and to provide a flat upper surface. It includes an enclosure cover 115d and a receiving portion 115f formed to protrude from the lower surface of the enclosure cover 115d and accommodating the communication card box 110.

The valve box 115 is buried under the ground of the median strip of the road or under the ground around the road, and the pipe 111 is installed to penetrate the enclosure 115a in the longitudinal direction. An electric valve 109 is connected to the pipe 111 inside the valve box 115, and the electric valve 109 is controlled by the communication card box 110 disposed in the housing part 115f.

The enclosure 115a of the valve box 115 is made of a rectangular tubular body made of metal, such as steel. An enclosure flange 115b is formed at the upper edge of the enclosure 115a, and between the enclosure flange 115b and the enclosure cover 115d to maintain the waterproof and internal pressure characteristics of the enclosure 115a at a predetermined level. An enclosure gasket 115c is interposed.

The housing cover 115d is composed of a flat iron plate having a predetermined thickness. Bolts 115e are fastened around the edge of the enclosure cover 115d at regular intervals to be fastened to the enclosure flange 115b.

The accommodating portion 115f has an internal space capable of accommodating the communication card box 110 and protrudes downward from the lower surface of the housing cover 115d. The inner space of the accommodating part 115f is formed by a circular or rectangular housing.

The accommodating part 115f has a plate-shaped accommodating part cover 115j capable of opening and closing its internal space. The housing part cover 115j made of a metal plate is fastened to the top of the housing part 115f by bolts 115k to cover the housing part 115f, and the upper surface of the housing part cover 115j and the housing cover 115d are connected. It is preferable that the upper surfaces have the same height and are located side by side on the same plane.

According to the structure in which the accommodating part 115f is disposed under the enclosure cover 115d, when replacement or repair of the communication card box 110 is required, the accommodating part easily and simply without opening the large and heavy enclosure cover 115d. The communication card box 110 can be maintained by opening only the cover 115j.

As in the above-described embodiment, the communication card box 110 has an electrical insulating waterproofing agent (P) made of any one selected from polybutene and insulating oil or a mixture thereof in the internal space while the communication card 110a is fixed to the inner bottom surface. is filled

The electric valve 109 is connected to the water supply pipe 111 penetrating the enclosure inside the enclosure 108a to control the opening and closing of the water supply pipe 111. Liquid may be selectively supplied to the corresponding spray nozzle 112 by opening the motorized valve 109 . The motorized valve 109 can collectively control the supply of liquid to the plurality of injection nozzles 112 arranged in the injection area of the same group.

As in the above-described embodiment, the motor 13, the reduction gear assembly 14, and the circuit board 15 housed inside the electric valve 109 are all kept submerged in the electrical insulating waterproofing agent P.

The fluid control system having the valve boxes 108 and 115 having the above configuration includes the excavation process for installing the nozzle 112 and the valve boxes 108 and 115, the pipe 111 installation process, and the valve boxes 108 and 115 It is built by a method including an installation process, an injection nozzle 112 installation process, and an asphalt pavement and painting process.

In the excavation process, the road surface is cut with a furnace to a predetermined width along the road with respect to the central dividing line, lane boundary, or roadside of a predetermined road section, and then excavation is performed to form a passage for burying the pipe 111 or the like.

In the pipe 111 installation process, the pipe 111 connected to the storage tank 100 and the pump 104 is disposed on the bottom surface of the passage to extend along the road.

In the valve box (108, 115) installation process, the valve box (108, 115) is installed so that the pipe (111) passes through the passage, and the motorized valve (109) connected to the pipe (111) and the motorized valve are installed inside the valve box (108, 115). A communication card box 110 connected to (109) is placed. The valve boxes 108 and 115 can also be installed in an externally exposed type so as to be mounted on a median strip outside the road surface.

The communication card box 110 and the motorized valve 109 are waterproofed as described above. That is, the communication card box 110 and the motorized valve 109 are sealed with an electrical insulating waterproofing agent ( P) is injected and sealed with sealing caps 110p and 19 to complete waterproofing and installation.

That is, the communication card box 110 is a power supply and communication cable 110f to the inside of the communication card box 110 in a state in which a communication card 110a capable of transmitting and receiving a control signal for controlling liquid injection is accommodated. , 110g, 110h) through the connection process, the process of assembling the cover 110c to the upper part of the lower case 110b, and the fluid inlet 110m provided in the cover 110c. ) by injecting and filling the inner space with an electrically insulating waterproofing agent made of any one selected from polybutene and insulating oil or a mixture thereof, and sealing by screwing the sealing cap 110p to the fluid inlet 110m. It will be waterproof.

The motorized valve 109 connects the power/communication line 1 to one side of the casing 10 through the PG connector 16 to electrically connect the communication card box 110, and to one side of the casing 10 The process of injecting the electrically insulating waterproofing agent (P) into the inner space through the formed fluid inlet (11a) and the process of sealing by screwing the sealing cap (19) to the fluid inlet (11a) is waterproofed.

In the spray nozzle 112 installation process, the spray nozzle 112 is connected to the pipe 111 and the spray nozzle 112 is installed such that the nozzle part is exposed to the outside of the road surface.

In the asphalt pavement and painting process, the periphery of each injection nozzle 112 is filled with a predetermined filler such as foundation concrete or metal member, or paved with asphalt concrete to fill the gap of the cutting part and paint the lane.

As described above, the present invention can control water injection by disposing the communication card box 110 in the valve boxes 108 and 115 and remotely turning on/off the motorized valve 109 from the controller 106.

The communication card box 110 and the electric valve 109 are filled with an electrically insulating waterproofing agent (P) made of polybutene, insulating oil, or a mixture thereof in the internal space to prevent the communication card 110a or the circuit board 15 and the motor 13 from By blocking the penetration of moisture, it is possible to prevent the occurrence of communication errors due to electric leakage, short circuit, noise, etc. In addition, the communication card box 110 is installed in the housing part 115f provided in the housing cover 115d of the valve box 115. ), the communication card box 110 can be conveniently maintained.

Although the present invention has been described above with limited examples and drawings, the present invention is not limited thereto, and within the equivalent scope of the technical idea of the present invention by those skilled in the art to which the present invention belongs Of course, various modifications and variations are possible.

10: casing 13: motor
14: reduction gear assembly 15: circuit board
21: connection socket 22: valve body
100: reservoir 101: main valve
102,110,114: communication card box 104: pump
105: main pipe 106: control unit
107: remote control device 108, 115: valve box
108a, 115a: enclosure 108b, 115d: enclosure cover
109: electric valve 110a: communication card
110b: lower case 110c: cover
110e: packing member 110f: communication cable
110g, 110h: communication cable 110j: transformer
11a, 110m: fluid inlet 19, 110p: sealing cap
111: pipe 112: injection nozzle
113: sensing unit 115b: enclosure flange
115c: housing gasket 115f: storage part
115j: housing cover 116: video surveillance camera
117: information display unit 118: information display board
P: Electrical insulating waterproofing agent

Claims (8)

An enclosure installed in the ground or in a buried or exterior type;
a motorized valve disposed inside the enclosure, connected to a pipe, and opening and closing the flow of the fluid transported through the pipe; and
A communication card box containing a communication card capable of transmitting and receiving a control signal for controlling the flow of the fluid by communicating with a control unit;
At least one of the electric valve and the communication card box is a waterproof valve box of a fluid control system, characterized in that the interior space is filled with an electrical insulating waterproofing agent made of any one selected from polybutene and insulating oil or a mixture thereof. According to claim 1,
The pipe is a waterproof valve box of a fluid control system, characterized in that any one selected from a pipe for transporting a liquid containing water for clean rod or salt water for preventing road icing, a water supply pipe for transporting constant water, and a gas pipe for transporting gas . The method of claim 2, wherein the motorized valve,
The casing is configured by assembling an upper case and a lower case together,
A motor providing rotational force capable of opening and closing the valve body and a circuit board to which the motor and a power/communication line are connected are disposed in an inner space of either one of the upper case and the lower case, and in the other inner space, the motor A reduction gear assembly is connected to the rotational shaft to reduce the rotational speed,
A connection socket is fixed to one side of the casing, in which the valve body, which is opened and closed by receiving rotational force from the reduction gear assembly, is accommodated and at least two entrances connected to the pipe are formed,
When the electrically insulating waterproofing agent is injected, the motor, the reduction gear assembly and the circuit board are all submerged in the electrically insulating waterproofing agent. The method of claim 3, wherein the motorized valve,
At least one of the upper case and the lower case has a separate fluid inlet for injecting the electrical insulating waterproofing agent into the inner space in a state in which the casing is assembled, and a sealing cap is screwed into the fluid inlet so as to seal. Waterproof valve box of the fluid control system, characterized in that coupled. According to claim 4,
Waterproof type of fluid control system, characterized in that the viscosity of the electrically insulating waterproofing agent filled in the inner space where the motor and circuit board are disposed is relatively higher than the viscosity of the electrically insulating waterproofing agent filled in the internal space where the reduction gear assembly is disposed valve box. The method of claim 2, wherein the communication card box,
A waterproof valve box of a fluid control system, characterized in that it has a lower case and a cover for accommodating the communication card and a packing member waterproofably interposed between the lower case and the cover and is housed in an enclosure of the valve box. According to claim 6,
The waterproof valve box of the fluid control system further comprising a water collecting unit disposed on one side of the inner space of the communication card box and made of super absorbent polymer (SAP). According to claim 1,
A waterproof valve box of a fluid control system, characterized in that polybutene having a viscosity of 10,000 to 30,000 cSt at room temperature between 20 ° C and 25 ° C is injected as the electrical insulating waterproofing agent.

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