KR20070113847A - Testing apparatus of water proof for sewer and method thereof - Google Patents

Abstract

An apparatus for testing water tight of a sewer using vacuum and a method thereof are provided to reduce the test cost and time by keeping watertightness state in the sewer using a packer blocking two ends of the sewer. An apparatus for testing watertightness of a sewer using vacuum comprises a vacuum pump(110), a pressurized air generating compressor(120), and a sensor(112). A sealing packer(70) is joined to two opposite sides of the sewer(60). The vacuum pump creates a vacuum in the sewer using a vacuum tube passing through the sealing packer. The pressurized air generating compressor expands the packer such that the packer serves as a sealing member for an inner wall. The sensor detects leakage in the sewer.

Description

Testing apparatus of water proof for sewer and method

1 is a cross-sectional view showing an example of a general sewer pipe watertight inspection apparatus,

2 is a view showing a watertight inspection structure of the sewage pipe using the vacuum of the present invention,

3 is a block diagram showing a control configuration of the present invention;

4 is a cross-sectional view showing a state applied to the sewer pipe of the present invention.

Explanation of symbols for the main parts of the drawings

3; Water supply side 4; Water supply pipe 5; Exhaust side 6; Exhaust pipe 9; In vitro tube 10; Downstream block 20; Upstream block 21; Hydr. 22; Reverse valve 23; Air supply tip 40; Test tube hose 50; Compressor 60; Sewage pipe 70 ; Packer 71; Expansion member fixing tube 72; Inner tube 73; Outer plate 74; Suction tube 75; Fixing nut 76; Fixing bolt 77; Air injection nozzle fitting hole 80; Expansion member 81; Air injection nozzle 82; Air injection tube 101; Engine Drive section 102; Engine 103; Ignition plug 104; Engine shaft 105; Engine pulley 106; Clutch 107; Frame 108; Fixing unit 109; Clutch pulley 110; Vacuum pump 111; Pulley 112; Vacuum sensor 120; Compressor 121; Pulley

The present invention relates to a vacuum watertight inspection apparatus and method for sewage pipes, and to prevent both ends of the sewage pipe with a packer and to vacuum the inside to detect ultrasonic abnormalities generated when outside air or leaks, and to easily inspect the sewage pipes in consideration of atmospheric pressure fluctuations. It relates to a vacuum watertight inspection apparatus and method of sewage pipes.

Watertightness of sewer pipes is an essential factor in protecting the environment and water resources. To this end, technology using heat detection sensor (Domestic Utility Model Registration No. 20-0306071), technology using laser light (Domestic Patent Registration No. 10-0335685), leak detection technology using infrared sensor (Domestic Utility Model Registration No. 20-0413585), a watertight test technique (patent registration No. 10-0568608) using air pressure is known,

One of the most frequently used technologies is a technique of checking the watertightness by blocking both ends of the sewer pipe and filling water, which is known as Korean Patent Registration No. 10-0187798.

In Fig. 1, the tubular downstream end plug 10 which seals the downstream end of the pretest section (a) is installed so as to penetrate the water pipe 11 in the transverse direction, and the water valve 12 is mounted on the rear end of the water pipe 11. . This side 12 is formed at the rear end, for example, a connection element capable of connecting the connection hose 30 attached to both ends of the well-known one-touch connection mechanism that can be connected and fixed at one time and can also be released and separated at one time.

All upstream flocks 20 including the post test section (b) are provided with a drain side 21 separate from the feed side 3 attached to the end of the water supply pipe 4, and a reverse side edge at the tip of the side 21. 22) Install. The water valve 21 is opened and closed when the preliminary test water c is completed at the post test section b, and the reverse finger 22 is connected to the rear end of the water valve 12 by a hose 30 to be connected to the post test zone. The test water (d) in (b) is blocked from flowing back into the preliminary test section (a). The front end of the reverse direction 22 is also provided with a connection element for connecting the rear end of the connection hose 30 having the one-touch connection mechanism as described above.

In addition, an air supply tip 23 is provided at the tip of the exhaust valve 5 attached to the tip of the exhaust pipe 6. The air supply tip 23 injects the compressed air produced by the compressor 50 on the ground when the test water is forcibly transferred to the post test section b after the watertight test in the test section. It is used to deflate the air in the post test section (b) when completing the post test number (d).

In addition, the connection hose 30 connecting the inlet end 11 of the upstream end plug 20 of the downstream end plug 10 of the pretest section (a) and the upstream end of the post test section (b) is connected to both ends. The one-touch fastening mechanism provides easy connection and disconnection.

The upstream end of the post-test section (b) after the watertight test is completed for the preliminary test section (a) in which the upstream end (a) and the downstream end (b) are sealed by the upstream end (20) and the downstream end (10). (A ') and the downstream end (I') which are not shown in figure are inserted in the same type | mold upstream floc 20 'and downstream floc 10' as mentioned above, and air is injected and expanded-sealed. The distal end 12 of the downstream end plug 10 and the reverse end 22 'of the upstream end 20b are connected to the connection hose 30.

Subsequently, the exhaust valve 5 ', the test tube valve 9', the drain valve 12 and 21 'are opened, and the water supply valve 3' is closed. Accordingly, the preliminary test water (c) flows into the post test section (b) through the open water pipe 11 and the water supply pipe 4 '.

When the water level in the preliminary test section (a) is lowered to the upper end of the test tube hose (40), the inside of the preliminary test section (a) is reduced to atmospheric pressure by external air introduced by closing the test tube valve (9) and opening the exhaust valve (5). Let's do it.

If the water level in the preliminary test section (a) and the post-test section (b) is the same, the movement of the test water is stagnated. At this time, the air supply tip 23 and the compressor 50 of the upstream end of the preliminary test section (a) and the compressor 50 are connected with a separate hose, and the test tube valve 9, the water supply side 3, and the water discharge side 21 are connected. Close and inject compressed air. From now on, the remaining amount of pretest water (c) is introduced into the post test interval (b) by the injected compressed air. At this time, when a part of the post test water flows out into the exhaust side 5 'of the post test section b, the exhaust side 5' is closed and the completion of the preliminary test water stops.

Thus, after the pretest number (c) has been moved to the posttest interval (b), the diaphragm 21 'is locked. The shortage of after-test water, which is generally small, but insufficient, opens the water supply side (3 ') with the water drain (21') locked and replenishes it from the existing reservoir tank or supplement water tank (8 '). In this case, replenish the test water (d) until it exceeds the vertical test tube (7 '). Then, the water test is carried out for the post-test period (b). After that, the watertight test is to be carried out in accordance with the above-mentioned methods.

However, this method involves filling the sewage pipe with water and plugging both ends with a plug to prevent water from falling out and conducting a watertight test to see if there is a water leak after a certain period of time. In order to expand the inside to high pressure and open and close each pipe for this purpose, the environment of the sewage pipe is not only horizontal, but it may be a steep slope. There is a problem, and when the high pressure occurs, the floc is not supported on the inner wall of the sewer pipe, but it falls out.However, when the flocks are removed, a shock such as a kind of cannon is fired due to the high pressure causes a realistic problem such as damage to a nearby person or device. There are many accidents The.

The present invention is to solve this problem, the object of the present invention is not to test the watertight test of the pipeline by applying pressure, but by applying a vacuum in the pipe to test the watertight to save time to put water or air, and to recover equipment It aims to provide a new concept of watertight testing apparatus and methods that reduce the time required to set accuracy and reduce costs.

Another object of the present invention is to provide a watertight test apparatus and method that can be easily tested even where water is not available because no water is used.

It is another object of the present invention to provide a watertight test apparatus and method for contributing to the prevention of safety accidents without the risk that the packer blocking both ends of the sewer pipe is thrown out because it is a method of applying negative pressure, not a method of applying pressure to the pipeline. .

Still another object of the present invention is to provide a watertight test apparatus and method for driving a vacuum pump and a packer expansion compressor through the rotational force of an engine of a vehicle so that a commercial power source is not required, so that a generator can be used even in a desert or a mountainous area without a generator. I will.

To this end, the present invention provides a vacuum pump and a compressor integrally installed in the vehicle to operate by receiving the engine output of the vehicle as a clutch,

A packer which expands under the air pressure of the compressor and seals the inlet of the sewer pipe,

A vacuum valve connected to a vacuum pump to penetrate the packer and vacuuming the inside of the sewer pipe;

It is configured to include an ultrasonic sensor installed in a self-driving car to recognize a change in wavelength generated when watertight in the sewer pipe.

That is, the present invention includes a vacuum pump for evacuating the inside of the sewage pipe through a sealer for blocking both ends of the sewage pipe;

A compressor for generating compressed air to expand the packer to perform a sealing function with the inner wall of the sewer pipe; And

It is to provide a vacuum watertight inspection apparatus for sewage pipes including a sensor that recognizes the leakage in the sewage pipe.

The vacuum pump and the compressor receive power through the pulley which is a power transmission means,

The pulley receives power through the engine shaft and the clutch providing the output of the engine, and configures the vehicle to drive the vacuum pump and the compressor.

The present invention also provides a sealing packer at both ends of the sewer pipe to test the watertight,

A packer is provided with a watertight expansion member and a vacuum valve for evacuating the sewer pipe;

Packers are installed at both ends of the sewer pipe, and the self-driving car having the water-tight sensing sensor is placed inside the sewer pipe;

A fan window of the watertight faucet member is operated and a vacuum valve is operated to vacuum the inside of the sewer pipe;

It carries out the process of determining the watertightness by changing the recognition value of the ultrasonic sensor installed in the self-driving car by moving the self-driving car, and applying the measured value to the computer through the control board in real time to display the abnormality. It is to provide a vacuum watertight inspection method of the sewer pipe.

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

2 is a configuration installed to be used in combination with the engine of the vehicle of the present invention, by applying the power of the battery (B1) from the engine drive unit 101 by the turn-on action of the start switch (SW) generates a high pressure, generated high pressure The ignition flash 103 of the engine 102 to ignite the engine is made.

An engine pulley 105 that transmits rotational force is coupled to the engine shaft 104 that forms the output of the engine of the vehicle, and the present invention allows the engine shaft 104 to receive power when needed so that the engine output can be used. The clutch 106 is installed around the engine shaft 104. The clutch 105 is fixed to the frame 107 of the vehicle, for example. The clutch 106 consists of a fixed portion 108 and a clutch pulley 109 fixed to the fixed portion 108 to selectively transmit power to the engine shaft 104.

The clutch pulley 109 is configured to drive the vacuum pump 110 and the compressor 120 through power transmission means such as a belt (for example, by a power transmission action through the pulleys 111 and 121).

Compressed air through the compressor 120 is made to expand the packer 70 through the air injection pipe 82 when the air pressure valve (V1) is opened to block the inner surface of the sewage pipe (60) to perform a sealing function. The vacuum pressure by the vacuum pump 110 is configured to open the vacuum valve (V2) to suck the internal air through the suction pipe (74) z to make a vacuum inside the sewer pipe (60).

3 is a control block diagram of the present invention, in which the power supply of the battery B1 is applied to the inverter 132 which converts the constant voltage Icy 131 of the decompression function into an alternating current. The output voltage B2 of the constant voltage ice 1310 is used as a driving power source of the control board 133.

The output AC power of the inverter 132 is applied through the cable power line 135, and the cable power line 135 is wound around the winder 143 to apply power to the autonomous vehicle 140. The self-propelled vehicle 140 is provided with a photographing city ratio 141 and an ultrasonic sensor 142 for recognition. Of course, the ultrasonic sensor 142 is applied to one input terminal P1 of the control board 133 along the sensor cable line 137. Of course, the captured image of the city ratio 1410 is applied to the computer main body 150 along the image cable line 136. Of course, the computer main body 150 receives an image signal, converts it into a digital signal, and installs an image processing card for storing the image signal. The power line 135, the cable line 136, and the sensor cable line 137 are convenient to use when they are wound around a winding device to form a mutual set.

The control board 133 receives the input signal of the vacuum sensor 112 through the input terminal P2, and internally recognizes the sensed value through the built-in analog digital converter (determines whether there is an abnormality), and determines the determination result. It is sent to the computer main body 150 to store the data in the main body. Reference numeral 151 denotes a monitor, 152 a keyboard, and 153 a printer. Although the ultrasonic sensor 142 is shown to be attached to the self-propelled vehicle 140, it may be used to attach to the packer 70.

4 is a cross-sectional view when the present invention is used in the sewage pipe, the air inlet pipe 82 connected with the compressor output end is provided with a pneumatic valve (V1) for applying the inflating air pressure for sealing to the packer 70,

The suction pipe 74 connected to the vacuum pressure output terminal of the vacuum pump 110 is provided with a vacuum valve (V2) for opening and closing the vacuum pressure through the packer 70 to vacuum the inside of the sewage pipe (60),

The valves V1 and V2 are configured to be remotely driven by the output terminal P3 of the control board 133 shown in FIG. 3 which controls to open and close automatically upon reaching the set value.

The packer 70 is a donut-shaped expansion member 80 to expand to block the inner diameter of the sewage pipe 60 when inflated,

Cylindrical expansion member fixing tube 71 to be fixed to the inner diameter of the donut-shaped expansion member 80,

An inner plate 72 which blocks an inner end of the expansion member fixing tube 71 and couples the suction tube 74 to pass through the inner diameter of the expansion member fixing tube 71 to the inside of the sewer pipe 60;

The outer end of the expansion member fixing tube 71 and the suction pipe 74 is coupled to penetrate toward the inside of the sewage pipe, and consists of an outer plate 73 having a diameter larger than the inner diameter of the sewage pipe 60. The outer plate 73 is formed with an air injection nozzle fitting 77 in which an air injection nozzle 81 is coupled to the air injection pipe 82 so as to inject air into the expansion member 80.

A fixing nut 75 surrounding the suction tube 74 is coupled to the outer plate 73, and the fixing nut 75 fixes the suction tube 74 while engaging with the fixing bolt 76. Although the present invention has been described mainly with respect to a natural flow type sewage pipe, it can be applied to a pressure pipe such as a water pipe. The outer plate 73 and the inner plate 72 is fixed to the corresponding expansion member fixing plate 71 by welding or screwing, and may be configured to be disassembled if necessary.

In the present invention configured as described above, the packer 70 is filled at both ends of the sewer pipe 60 as shown in FIG. 4, and then the air injection pipe 82 and the suction pipe 74 are installed (of course, a pre-installed one may be used). (Of course, the sewage pipe should have a built-in self-propelled vehicle 140 shown in the block diagram in FIG. 3, and at the same time, the power line 135, the image cable line 136, and the sensor cable line 137 to the winding machine in the sealed state. Wind it up at once

When the user turns on the start switch SW of the vehicle in this state, power is transmitted to the engine shaft 104 of the engine 102 while the engine is operated through the engine driving unit 101 and the ignition plug 103. Then, the clutch 106 having the fixed part fixed to the frame 107 of the vehicle is operated manually or automatically, so that the power of the engine 102 is transferred from the engine shaft 104 via the clutch 106 to the compressor 1200 and the vacuum pump 110. Can be operated simultaneously or separately by a separate switch (not shown).

Since the compressor 120 generates air pressure, the air pressure valve V1 is opened (the opening method is simply opened because it can be operated automatically and manually), and the air injection pipe 82 and the air injection nozzle 81 are opened. By expanding the expansion member 80 (expansion degree can be set by the air pressure or time, and depending on the diameter, the definition of expansion to some extent is omitted), so that the inner surface of the sewage pipe 60 is isolated from the outside Seal it.

In this state, the vacuum pressure through the vacuum pump 11 is applied until the vacuum valve V20 is opened and the vacuum sensor 1120 achieves the set pressure. The degree of vacuum is the vacuum value through the vacuum sensor 112. The digital signal is recognized by the control board 133 and then applied to the computer main body 150. In this case, the packer 70 is evacuated by the vacuum inside the sewer pipe 60 through the suction pipe 740. Even if pressure to the inside is generated, the diameter of the outer plate (73) is larger than the inner diameter of the sewer pipe (60) to prevent being sucked into the sewer pipe (60).

The user commands the forward and backward movement of the self-propelled vehicle 140, which is also implemented to appear on the program screen while watching the vacuum degree through the search screen programmed to display the recognition value through the computer main body 150 on the initial screen. Of course, in order to do so, the image in the sewage pipe of the city ratio 141 installed in the self-propelled vehicle 140 should be converted into a digital association in the image processing board embedded in the computer mainboard, stored and displayed on the monitor 151.

In addition, the transmitting unit recognizes the transmitting ultrasonic waves of the ultrasonic sensor 142 generated at regular intervals as the frequent vehicle passes and applies the recognition value to the input terminal P1 of the control board 133.

Then, it can be confirmed through the abnormality of the ultrasonic signal received due to the penetration of the outside air due to damage of the inner wall of the sewer pipe 60, and the damage position can be confirmed through the city ratio 141, and separately provided with water for inspection. It eliminates the need for inspection, which shortens the inspection time, enables the user to know whether there is an abnormality through a vacuum change or an ultrasonic signal, and enables accurate inspection through position recognition through the city ratio.

Example

Equipment specification

 equipment standard  Specifications material Quantity Packer (70) Diameter 150-1500㎜ (Dimension) Watertight Packer Rubber + BASE 2 units Vacuum Pump (110) 3500ℓ / sec 60 Hz (1740 rpm) Oil rotation, 164㎏ 1 unit Software recognition pressure 760 ~ 1torr torr, pa program 1 meal Computer Body (150) Office win-XP 1 unit Sensor 112 and Connectors 1torr, auto RS232 INTERFACE Piranha Gauge 1 meal

Allowable exhaust time measurement by vacuum test for each diameter

    In order to measure the allowable exhaust time, test specimens were manufactured by diameter and tested.

  The allowable leakage time for the head 1m was measured by the existing head test method, followed by a vacuum test to measure the allowable exhaust time in the range of the existing head test, and the results are shown in Table 1 below.

View Count Distance (m) Volume (㎥) Water leakage test results allowable leakage (ℓ / m) Watertight Test Results Measurement Results Vacuum test measurement result (sec) 150 (mm) One 12 0.211 0.025 0.300 6 2 12 0.211 0.025 0.300 5 3 12 0.211 0.025 0.300 6 300 (mm) One 12 0.588 0.005 0.6 16 2 12 0.588 0.005 0.6 17 3 12 0.588 0.005 0.6 16 450 (mm) One 12 1.896 0.075 0.900 32 2 12 1.896 0.075 0.900 32 3 12 1.896 0.075 0.900 33 600 (mm) One 12 3.391 0.10 1.200 55 2 12 3.391 0.10 1.200 53 3 12 3.391 0.10 1.200 54 1000 (mm) One 12 9.420 0.167 2.004 140 2 12 9.420 0.167 2.004 140 3 12 9.420 0.167 2.004 139

As shown in Table 1, it can be seen that the watertight test of the sewer pipe corresponding to the existing watertight test can be performed through vacuum.

Based on the equipment specification of the present invention Water and sewage pipe line with a diameter of 150 ~ 1000 ㎜ blocked both ends of the sewer pipe with a packer, but excessive vacuum degree is sucked into the inside of the sewer pipe 60, so the outer plate (73) at both ends of the airtight packer 70 ) Should be firmly fastened to the expansion member fixing tube 71 by fixing bolts or welding to the expansion member fixing tube 71, and the free sewage pipe should never exceed 380 torr, which is 50% vacuum (the lower the higher the degree of vacuum). It is better to apply a pressure of 1 to 379 torr in the case of a pressure pipe such as a water pipe. This does not require a high pressure vacuum in the case of a natural sewage pipe, so the vacuum degree is achieved within 380 to 600 torr, and the pressure pipe is carried out in the range of 1 to 379 torr, and in each case, the pressure applied to the packer is As shown in the table, adjust the packer's specifications to withstand it.

Tube pressure 150 300 600 800 1000 1200 Remarks 380torr (0.5㎏ / ㎠) 92 367 1,470 2,612 4,082 5,878 Kg 1 torr (1.0㎏ / ㎠) 184 735 2,939 5,225 8,164 11,756 Kg 600 torr (0.26 ㎏ / ㎠) 46 184 738 1,311 2,049 2,950 Kg

As described above, the present invention does not test the watertight test of the pipeline by applying pressure, but by applying a vacuum in the pipe to test the watertightness, saving the time for putting water or air into the pipe, reducing the time for collecting the equipment, and improving the accuracy. Provides a new concept of watertight testing equipment and methods that reduce costs.

The present invention does not use water so that it can be easily tested even where water is not available,

It is to provide a watertight test apparatus and method that contributes to the safety accident prevention without the fear that the packer blocking both ends of the sewage pipe is thrown out because it is a method of applying a negative pressure rather than a pressure to the pipeline.

The present invention is to provide a water-tight test apparatus and method for driving the vacuum pump and the packer expansion compressor through the rotational force of the engine of the vehicle, so that it can be used without a generator even in the desert or mountainous regions without requiring a separate commercial power source.

Claims (10)

A vacuum pump for coupling the sealing packer 70 for blocking both ends of the sewage pipe to both ends of the sewage pipe and evacuating the inside of the sewage pipe with a vacuum tube installed through the sealing packer; A compressor for generating compressed air to expand the packer to perform a sealing function with the inner wall of the sewer pipe; And Vacuum watertightness inspection device of the sewer pipe including a sensor that recognizes the leak in the sewer pipe. According to claim 1, wherein the vacuum pump and the compressor is powered through a pulley which is a power transmission means, Pulley is a vacuum watertight inspection device of the sewer pipe, characterized in that the power is transmitted through the engine shaft and the clutch providing the output of the engine to drive the vacuum pump and the compressor to the automobile engine. The apparatus of claim 1, wherein the sensor is installed in a self-driving vehicle moving in the sewage pipe, and is configured to recognize the leak due to the change of the received ultrasonic wave by generating the ultrasonic wave. The compressor output stage is provided with a pneumatic valve (V1) for applying the inflating air pressure for sealing with a packer, At the vacuum pressure output end of the vacuum pump, a vacuum valve (V2) for opening and closing the vacuum pressure through the packer to vacuum the inside of the sewer pipe is installed. Valve (V1, V2) is a vacuum water tightness inspection apparatus of the sewer pipe further comprises a control board for controlling to automatically open and close when the set value is reached. The apparatus of claim 4, wherein the recognition value of the control board is configured to be applied in real time to the input / output unit of the computer at the output terminal. 4. The self-propelled vehicle is supplied with the output of the battery B1 of the vehicle and is supplied with the output of the inverter for converting the AC power, and the power line, the ultrasonic sensor line, and the image cable line of the inverter are wound or unwound together. A vacuum watertight inspection device for sewage pipes, wherein the winder is integrally installed in the self-driving car. According to claim 1, Packer 70 is a donut-shaped expansion member 80 for expanding to block the inner diameter of the sewage pipe 60 when inflated, Cylindrical expansion member fixing tube 71 to be fixed to the inner diameter of the donut-shaped expansion member 80, An inner plate 72 which blocks an inner end of the expansion member fixing tube 71 and couples the suction tube 74 to pass through the inner diameter of the expansion member fixing tube 71 to the inside of the sewer pipe 60; The outer end of the expansion member fixing tube 71 and the suction pipe 74 is coupled to penetrate toward the inside of the sewer pipe, the vacuum of the sewage pipe, characterized in that it comprises an outer plate 73 having a diameter larger than the inner diameter of the sewer pipe (60) Watertight inspection device. Using a vacuum system vehicle to block both ends of the sewer pipe (conduit) and suck the air to form a vacuum; Monitoring the evacuation time during the vacuum formation process and closing the vacuum valve when the proper vacuum is reached; Vacuum watertightness inspection method of sewage pipe which performs watertightness test on the target pipe by monitoring the pressure change under vacuum In the method of testing the watertight by installing a sealing packer on both ends of the sewer pipe, A packer is provided with a watertight expansion member and a vacuum valve for evacuating the sewer pipe; Packers are installed at both ends of the sewer pipe, and the self-driving car having the water-tight sensing sensor is placed inside the sewer pipe; Expanding the watertight expansion member, and then operating the vacuum valve to evacuate the inside of the sewer pipe; The process of moving the self-driving car to detect watertightness by fluctuations in the recognition value and vacuum pressure of the ultrasonic sensor installed in the self-driving car, and applying the measured value to the computer through the control board in real time to display the abnormality. Vacuum watertight inspection method for sewage pipes, characterized in that performed sequentially. 10. The method of claim 8 or 9, wherein a vacuum sensor is installed near the vacuum valve so that the control board recognizes an excessive vacuum set value such that the sewage pipe is deformed and performs a process of controlling the operation of the vacuum pump to be stopped. Vacuum watertightness inspection of sewer pipes.

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