KR100993285B1 - Spraying apparatus of fluid to mitigate train noise - Google Patents

Abstract

PURPOSE: A fluid sprayer for reducing noise in a railway is provided to reduce abrasion and noise occurred when a railway vehicle is operated. CONSTITUTION: A fluid sprayer for reducing noise in a railway comprises a sensor(100), a nozzle(200), a protection cap(300), a bubble generator, a main tank(500), a high pressure pump(600), an auxiliary tank(700), a quantitative pump(710), a stirrer(510), and a control box(800). The sensor senses a railway vehicle. The nozzle is installed around a rail(10). The protection cap coupled to the front end of the nozzle. The bubble generator is installed inside the nozzle. The main tank stores fluid for reducing noise. The high pressure pump sprays the fluid with high pressure. The auxiliary tank is connected to the main tank and stores a lubricant with extreme pressure. The quantitative pump supplies the water-soluble lubricant to the main tank. The stirrer forcefully mixes the lubricant with water.

Description

Spraying apparatus of fluid to mitigate train noise}

The present invention relates to a technology capable of reducing noise generated when the wheels and rails of a vehicle come into contact with each other when a subway or a train enters a curved track.

The subway, which runs in the city center, has been constructed with many curved structures for transportation on the ground and convenient transfers. Under these conditions, the vehicle enters a curved track at a speed of 40 km / h, which generates severe noise due to friction between the metallic rail and the metallic wheels. These noises create irritability and mental stress on the employees and people who use the subway.

More specifically, the noise has a smaller radius of curvature, the greater the flat edge gradient line, and the faster the train speed, the higher the noise and the faster the wear rate. As various other factors have occurred, active research in the railway field has been started to prevent this.

The present invention is to provide a railway noise reduction fluid injection device that can reduce the noise and abrasion occurring during the operation of the railway vehicle environmentally and economically.

Railway noise reduction fluid injection device of the present invention for achieving the problem as described, a plurality of nozzles for injecting the railway noise reduction fluid toward the rail; The front end of each nozzle is combined to form a wrap, the rear end is large diameter and the shape is reduced in diameter toward the front end, but the rear end is provided with a female thread for engaging with the nozzle, the air can flow to the front of the female screw outside the front end A protective cap is provided so that the flow of air along the flow path is generated when the railroad noise reduction fluid is injected through the nozzle to protect the injection stem; Bubble generating means is mounted inside the nozzles, the net is formed on the outer circumferential surface of the chamber and the discharge port side to pass through the railway noise reduction fluid to generate bubbles; A main tank connected to the nozzles and storing the railroad noise reduction fluid; A high pressure pump connected to the main tank to inject the railway noise reduction fluid from the nozzle at a high pressure; An auxiliary tank connected to the main tank and storing a water-soluble extreme pressure lubricant; A fixed-quantity pump provided in the auxiliary tank to supply the water-soluble extreme pressure lubricant in a prescribed amount to the main tank; An agitator provided inside the main tank to forcibly mix the water and the water-soluble extreme pressure lubricant to form the railroad noise reduction fluid; A sensor for detecting a railroad car entering the station; And a control box configured to control the railroad noise reduction fluid to be injected from the nozzle by receiving a signal from the detection sensor.

And in the present invention, the nozzle is coupled to the front end of the nozzle mount that is rotatably coupled to the post installed near the rail, the nozzle is rotated away from the rail by a first solenoid connected to the nozzle mount And a second solenoid having a second plunger which is engaged with the first plunger of the first solenoid to form a state in which the nozzle is far from the rail, and the first plunger and the second plunger are coupled to each other. The first solenoid and the second solenoid is characterized in that the electricity supply is cut off.

Railway noise reduction fluid injection device of the present invention can minimize the problems of environmental pollution, because it uses the water-based railway noise reduction fluid, it is effective to reduce the noise and abrasion problems generated when the railway vehicle stops have.

In addition, the present invention can more accurately inject the railway noise reduction fluid to the rail portion, and has an effect that an appropriate friction coefficient can be formed between the wheel and the rail by generating bubbles in the railway noise reduction fluid to be injected.

1 is a schematic configuration diagram of a railway noise reduction fluid injection device according to an embodiment of the present invention.
Figure 2 is an illustration of a nozzle that can be applied to the preferred embodiment of the present invention.
3 is an exemplary view of a protective cap.
4 is a cross-sectional view of the protective cap.
5 is an exemplary view of a nozzle capable of redirection.
6 is a cross-sectional view showing a coupling relationship between the first plunger and the second plunger.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated.

Attached Figure 1 is a schematic configuration diagram of a railway noise reduction fluid injection device according to an embodiment of the present invention, Figure 2 is an illustration of a nozzle that can be applied to a preferred embodiment of the present invention, Figure 3 is a protection Figure 4 is an exemplary view of the cap, Figure 4 is a cross-sectional view of the protective cap, Figure 5 is an illustration of a nozzle that can be changed direction, Figure 6 is a cross-sectional view showing a coupling relationship between the first plunger and the second plunger.

Railway noise reduction fluid injection device according to a preferred embodiment of the present invention largely sensor 100, nozzle 200, protective cap 300, bubble generating means 400, the main tank 500, high pressure pump 600 ), The auxiliary tank 700, the metering pump 710, the stirrer 510, the control box 800, including the rail noise reduction fluid by injecting the railway noise reduction fluid over the rail (10) It also reduces wear and noise. In addition, the railroad noise reduction fluid spraying device according to the present embodiment is environmentally friendly because the railroad noise reduction fluid based on environment-friendly water is used, and may be configured to be reusable by providing a recovery facility (not shown).

A detection sensor 100 is provided to detect the entry of a railway vehicle into a station that is a station of a railway vehicle such as a subway, and the detection sensor 100 may use various known sensing means. For example, a vibration sensor, an acoustic sensor, a sensor using a laser beam, or the like may be used. When the detection sensor 100 detects the entry of the railway vehicle, a signal is transmitted to the control box 800 so that automatic control is performed so that the railway noise reduction fluid may be injected from the nozzle 200 to be described later.

Near the rail 10 inside the station, a plurality of nozzles 200 that spray the railway noise reduction fluid are installed at predetermined intervals. The nozzle 200 sprays the railway noise reduction fluid at a high pressure, and the nozzle 200 is coupled to the nozzle mount 210 installed on the ground, so that the railway noise reduction fluid can be sprayed evenly toward the rail 10. Maintain proper height and angle.

The protective cap 300 is coupled to the front end of the nozzle 200, the protective cap 300 is a form surrounding the nozzle 200, the railway noise reduction fluid is injected through the nozzle 200 the protective cap ( The air flow is generated in the injection direction of the railway noise reduction fluid to protect the injection stem.

Figure 3 shows various embodiments of the protective cap, as shown the overall shape of the protective cap 300 is in the form of a partial cone with the top cut off. That is, the protective cap 300 is basically made of a structure that allows air to flow from the rear in the injection direction of the railroad noise reduction fluid to the front, and more specifically, the rear end diameter is larger and the diameter decreases toward the front end.

A rear end portion of the protective cap 300 is provided with a female thread portion 310 for fastening with the nozzle 200, and air to the outside of the female thread portion 310 may flow to the front end through the protective cap 300. Flow path 320 is provided. The flow path 320 may be formed in a plurality along the rear end edge of the protective cap 300 or is connected to the protective cap 300 by having a perforated portion 330 on the outer peripheral surface of the protective cap 300 Air flow can be generated.

When the railway noise reduction fluid is injected from the nozzle 200 due to the protective cap 300 surrounding the nozzle 200, the pressure is lowered between the nozzle 200 and the inside of the protective cap 300 to generate air flow. The air flow forms a shape surrounding the outside of the injection stem to be sprayed to serve to protect the injection stem.

Rail noise reduction fluid is injected to the rail 10 through the nozzle 200 is not injected in the right direction because the severe turbulence occurs when entering the history due to the space between the railroad car connection, preferred embodiment of the present invention In the example, by placing a protective cap 300 coupled to the nozzle 200 is characterized in that the railway noise reduction fluid is less affected by turbulence by making the air flow surrounding the injection stem in the injection direction of the railway noise reduction fluid.

The bubble generating means 400 is installed to be fixed inside the nozzles 200 and includes a chamber 410 and a net 420. Various forms of coupling means 201 may be provided in the nozzle 200 so that the bubble generating means 400 may be fixed to the inside of the nozzle 200.

 The chamber 410 is cylindrical and has a shape such as a hollow pipe inside, and the left and right are opened, one side is the discharge port 411, the outer peripheral surface is provided with a plurality of perforated side holes 412. By forming the net 420 of the mesh structure in the discharge port 411 and the side hole 412 of the chamber 410, the rail noise reduction fluid flowing into the chamber 410 passes through the net 420, bubbles are generated. .

The present embodiment presented by the bubble generating means 400 is just one example, and various other modifications may be used. That is, if the rail noise reduction fluid is to cause a large amount of bubbles generated by the impact during the passage of the nozzle 200, the bubble generating means 400 may be in any form.

The generated bubbles are sprayed to the rail 10 together with the railway noise reduction fluid, and the friction coefficient between the wheels and the rails is prevented from being excessively lowered due to the bubbles contained in the railway noise reduction fluid, thereby preventing excessively low braking characteristics. Make sure

Railroad noise reduction fluid is stored in the main tank 500 and the railroad noise reduction fluid is supplied to the nozzle 200 by the operation of the high pressure pump 600 connected to the main tank 500 may be injected in a high pressure state.

On the other hand, the railway noise reduction fluid as used in the present invention is based on water and may be made of only water, but preferably a small amount of water-soluble extreme pressure lubricant is contained in the water. The railway noise reduction fluid including the water-soluble extreme pressure lubricant is preferably about 0.5 to 1 parts by weight of the water-soluble extreme pressure lubricant with respect to 100 parts by weight of water. A fixed amount of water is supplied to the main tank 500, and a water soluble extreme pressure lubricant is also supplied to mix the water and the water soluble extreme pressure lubricant to form a railroad noise reduction fluid. In FIG. 1, a supply line for supplying water to the main tank 500 is omitted.

In addition, the railway noise reduction fluid injection device according to the embodiment of the present invention is provided with an auxiliary tank 700 connected to the main tank 500 to supply a water-soluble extreme pressure lubricant, and the water-soluble extreme pressure in the auxiliary tank 700 is provided. The lubricant will be stored.

Auxiliary tank 700 is provided with a fixed amount pump 710 to supply a predetermined amount of water-soluble extreme pressure lubricant to the main tank 500, the main tank 500 is agitator 510 for forcibly mixing water and water-soluble extreme pressure lubricant. ) Is preferable.

Next, another embodiment of the present invention will be described.

Unlike railway vehicles carrying passengers such as subways, the inspection vehicles for rail maintenance or management are wider on the lower side than the railway vehicles, so the nozzles 200 are separated from the rails 10 to prevent interference when the inspection vehicles pass. It should be operated to move away.

To this end, in the present embodiment, the nozzles 200 coupled to the nozzle mount 210 are configured to be rotated or retracted to selectively move away from the rails 10.

In the present embodiment, the nozzle 200 is separated from the rail 10 by combining two solenoids, and after the nozzle 200 is operated away from the rail 10, two solenoids are used to supply electricity. Keep it off by blocking it. Since the continuous supply of electricity to the solenoid to maintain the position of the nozzle 200 is a waste of energy in the embodiment of the present invention by combining the two solenoids to supply electricity only when changing the position of the nozzle 200 After the change is made, there is a feature that no electricity supply is required.

As shown in FIG. 5, the first solenoid S1 and the second solenoid S2 are installed in the crossing direction, and the first solenoid S1 is connected to the nozzle 200. That is, in the present embodiment, the nozzle mount 210 to which the nozzle 200 is coupled is formed to be rotatable with respect to the post 220, and the nozzle mount 210 and the first solenoid S1 are connected to each other. The second solenoid S2 is installed in the direction crossing the rear side of the first solenoid S1.

Since the basic structure or operation principle of the solenoid is a well-known technique, a detailed description thereof will be omitted.

Referring to FIGS. 5 and 6, when the first solenoid S1 is in an off state, the nozzle mount 210 is in a direction in which the nozzle 200 faces the rail 10, and the first solenoid When S1 is turned on, the first plunger P1 is retracted and a perforated fitting hole H is provided near the rear end of the first plunger P1.

When the first solenoid S1 is turned on and the first plunger P1 is retracted, the second solenoid S2 is turned on so that the second plunger P2 is also retracted, and at this time, the second of the second solenoid S2 is The plunger P2 is inserted into the fitting hole H formed in the first plunger P1 of the first solenoid S1. A fitting groove G is formed on an outer surface of the second plunger P2. In particular, the fitting hole (H) is such that the triangular shape, one side is wide enough to pass through the second plunger (P2) while the width becomes narrower toward the other side.

After the first solenoid S1 and the second solenoid S2 are both turned on to block the electric supply of the first solenoid S1 while the fitting groove G is inserted into the fitting hole H, the second It also cuts off the electricity supply to the solenoid (S2). When the first solenoid (S1) is turned off, the first plunger (P1) will be advanced to the original position by the spring (not shown), the narrow portion of the fitting hole (H) is caught in the fitting groove (G). Thereafter, the second solenoid S2 is also turned off. That is, in the state in which both the first and second solenoids S1 and S2 are turned off, the nozzle mounting base 210 to which the nozzle 200 is coupled is rotated downward to maintain the nozzle 200 far from the rail 10. Done.

In the above embodiment, the nozzle mounting bracket 210 is rotated to be away from the rail 10. However, the nozzle mounting bracket 210 may be configured to be retracted while moving linearly.

Afterwards, when the nozzle 200 is directed to the rail 10 again, the first solenoid S1 is turned on so that the first plunger P1 is retracted so that the nozzle 200 is coupled to the fitting groove G of the second plunger P2. The narrow fitting hole H is separated from the fitting groove G, and then the second solenoid S2 is turned on so that the second plunger P2 is advanced to be separated from the fitting hole H. Then, when the first solenoid (S1) is off, the nozzle plunger (210), which has been advanced and folded, is opened toward the rail (10). Next, when the second solenoid S2 is also turned off, the second plunger P2 is retracted. That is, even when the nozzle 200 is disposed to face the rail 10, the first solenoid S1 and the second solenoid S2 are maintained without electricity.

Railway noise reduction fluid injection device of the present invention is provided with a control box 800 that is automatically controlled in response to the signal of the sensor 100 is automatically supplied when the nozzle 200 or the supply or auxiliary of water to the main tank 500 It is preferable to automatically control the timing or amount of supply of the water-soluble extreme pressure lubricant to the tank 700. That is, when the detection sensor 100 detects the entry of the railway vehicle, the start signal of the high-pressure pump 600 is transmitted by the control box 800, and accordingly, the railway noise reduction fluid is injected into the nozzle 200 for the prescribed time. do. Since the plurality of nozzles 200 are disposed along the rails 10, it is preferable that the nozzles are controlled to sequentially inject the railway noise reduction fluid with time difference. In addition, when the amount of the railway noise reduction fluid stored in the main tank 500 falls below a predetermined level, the water and the water-soluble extreme pressure lubricant are controlled to be automatically supplied, and the forced mixing by the stirrer 510 is performed.

Since the running time of the inspection vehicle for checking or repairing the rail is not constant, the operation of the first and second solenoids S1 and S2 for changing the direction of the nozzle 200 is made to be made by the operator by operating a button. desirable.

Next will be described the operation simulation of the railway noise reduction fluid injection device assuming the actual situation according to an embodiment of the present invention in more detail.

First, all simulation conditions are as follows.

1. Length of railroad car: 108m 2. Length of railroad car: 18m

3. Speed of railroad car: 40km / h 4. Travel distance for 1 second: 11m

5. Total injection distance: 240m 6. Number of trips per day: 166 times (one way)

In this simulation, a total of seven nozzles are installed, and nozzles 1 to 4 are arranged at 30m intervals, and nozzles 4 to 7 are arranged at 50m intervals.

When the sensor detects the entry of the railway vehicle, the high pressure pump is activated to increase the hose pressure connected to the nozzle. When the train approaches approximately 5 m ahead of nozzle 1, spraying starts from nozzles, spraying starts every 2.5 seconds from nozzles 1 to 4, and spraying every 4.3 seconds from nozzles 5 to 7. .

That is, spraying is performed first at nozzle 1 and then spraying at next nozzles sequentially. Nozzle 1 is to be sprayed for 8 seconds after the start of the injection, the nozzle from the nozzle 2 to 7 is to be carried out for 7 seconds after the start of the injection.

After the injection is made for each nozzle for the prescribed time, the injection of the nozzles is stopped and the high pressure pump is turned off. The injection volume of the railway noise reduction fluid used in each nozzle is 800 ml for No. 1 nozzle and 700 ml for the remaining nozzles.

According to the simulation, the noise generated when the railway vehicle stops was found to be significantly reduced.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be.

It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Railway noise reduction fluid injector according to the present invention can be installed in the history of the subway.

100: sensor 200: nozzle
210: nozzle mounting bracket 220: post
300: protective cap 310: female thread
320: flow path 330: drilling part
400: bubble generating means 410: chamber
411 discharge port 412 side hole
420: net 500: main tank
510: agitator 600: high pressure pump
700: auxiliary tank 710: metering pump
800: control box 10: rail
S1: first solenoid S2: second solenoid
P1: first plunger P2: second plunger
H: fitting hole G: fitting groove

Claims (2)

A plurality of nozzles for injecting rail noise reduction fluid toward the rail;
Combined in the form of surrounding the front end of each nozzle, the rear end has a large diameter and the shape is reduced in diameter toward the front end, but the rear end is provided with a female screw portion for engaging with the nozzle, the air can flow to the front end outside the female screw portion A protective cap is provided so that the flow of air along the flow path is generated when the railroad noise reduction fluid is injected through the nozzle to protect the injection stem;
Bubble generating means is mounted inside the nozzles, the net is formed on the outer circumferential surface of the chamber and the discharge port side to pass through the railway noise reduction fluid to generate bubbles;
A main tank connected to the nozzles and storing the railroad noise reduction fluid;
A high pressure pump connected to the main tank to inject the railway noise reduction fluid from the nozzle at a high pressure;
An auxiliary tank connected to the main tank and storing a water-soluble extreme pressure lubricant;
A fixed-quantity pump provided in the auxiliary tank to supply the water-soluble extreme pressure lubricant in a prescribed amount to the main tank;
An agitator provided inside the main tank to forcibly mix the water and the water-soluble extreme pressure lubricant to form the railroad noise reduction fluid;
A sensor for detecting a railroad car entering the station;
And a control box that receives the signal from the sensor and controls the rail noise reduction fluid to be injected from the nozzle. The method of claim 1,
The nozzle,
Coupled to the tip of a nozzle mount that is rotatably coupled to a post installed near the rail, the nozzle is pivoted away from the rail by a first solenoid connected to the nozzle mount, and the nozzle is moved away from the rail. In order to maintain the state, a second solenoid having a second plunger having a coupling relationship with the first plunger of the first solenoid is formed, and when the first plunger and the second plunger are coupled, the first solenoid and the second solenoid Railway noise reduction fluid injection device, characterized in that the electricity supply is cut off.

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