KR100914748B1 - Repaired pipe leak tester with vacuum and method thereof - Google Patents

Abstract

The present invention provides a pair of airtight maintenance site airtight maintenance check packer 300 having a pair of maintenance check each having an expansion member to expand the air hose;

A water supply pipe 4 for supplying water for a watertight test to the sewage pipe between the maintenance check packer 300 and the repair felt portion from the replenishing water tank 8;

A rotary joint 360 having a weight 363 at a lower end of the exhaust hose 362 connected to the front end of the exhaust pipe 6 so as to exhaust air between the maintenance check packers 300 at all times;

A vacuum pump 400 for sucking the exhaust air through the exhaust hose 362 to discharge the internal air of the sewer pipe 210 for maintenance confirmation;

When the exhaust to the vacuum pump 400 is completed, the sewer pipe partial repair test apparatus and method using a vacuum including a vertical test tube (7) is determined through the exhaust hose (362) to the water pressure of the refill bottle (8).

Description

Repaired pipe leak tester with vacuum and method according to vacuum

The present invention checks the partial repair position of the sewage pipe to move a pair of packers between the repair position to inflate the packer with air to block both sides of the partial repair and put water into the repair space between the packers and at the same time vacuum The present invention relates to a sewer pipe partial repair test apparatus and method using a vacuum for watertight test above water pressure.

The present invention also checks the partial repair position of the sewer pipe to move a pair of packers between the repair positions to inflate the packer with air to block the partial repair side spaces, and to apply vacuum to the clogged space so that the vacuum change can be seen. At the same time, the present invention relates to a sewage pipe partial repair test apparatus and method for fixing a repair area in real time by a camera fixed to a packer portion of the repair space between both packers so as to be rotatable along an inner diameter of a partial repair pipe.

In general, 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 valve 22 is connected to the rear end of the water valve 12 by a hose 30 to be connected to the test post. 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) upon completion of the post test procedure (d) for b).

In addition, the connection hose 30 connecting the water pipe 11 of the downstream end plug 10 of the pretest section (a) and the reverse side 22 'of the upstream end of the post test section (b) 20' is connected. One-touch fastening mechanisms are provided at both ends for ease of 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') not shown, the same type of upstream floc (20 ') and downstream end (10') not shown are inserted, 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. In addition, the shortage of after-test water, which is generally small, is insufficient, the water supply side (3 ') is opened while the water drain (21') is locked and replenished from the existing storage tank or the supplemental 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.

On the other hand, as a method of repairing sewer pipes, the lining reinforcement method requires a reinforcement function due to severe damage of the damaged parts, for example, when the damaged parts of the pipeline are widely distributed or formed around the entire inner diameter of the pipe. It is a method of reinforcing the damaged area over a wide range by lining a separate repair material on the inner wall of the pipeline.

This lining reinforcement method impregnates the outer shell of synthetic resin materials such as polyethylene, polyurethane and nylon, and the inner shell of felt made of non-woven fabric or glass fiber material, and impregnates a curing agent such as a thermosetting epoxy or resin and then ruptures or cracks the sewage pipe. After reinsertion into the inside, hot water or steam is introduced into this pipe to inflate the felt so that the endothelial of the felt is in close contact with the inside of the upper and sewer pipes to be thermally cured. This technique, as shown in Figures 2 to 6 non-excavation partial repair device 100 for the pipeline sewer pipe includes a housing 110, the upper plate (120a) and lower plate (120b), the expansion member 150. The housing 110 has a hollow cylindrical shape, and the upper and lower plates 120a and 120b are mounted on the upper and lower ends of the housing 110. Here, the contact portion of the housing 110 and the lower plate 120b may be integrally manufactured by welding or the like, but the housing 110 and the upper plate 120a should have a structure that is separated from each other. In the drawings, a structure separated from each other is illustrated as the housing 110 and the upper plate 120a, but the housing 110 and the lower plate 120b may be separated from each other. At this time, the housing 110 and the upper plate (120a) having a structure that is separated from each other, or the housing 110 and the lower plate (120b) has a fixing means for coupling to each other. The fixing means has a plurality of nuts 112 are formed at equal intervals at the end of the housing 110, a plurality of through holes 122 in communication with the nut 112 to the upper plate 120a or the lower plate 120b to be coupled. The plurality of bolts 130 are formed through the through holes 122 and fastened to the respective nuts 112.

As such, the upper plate 120a and the lower plate 120b mounted on the housing 110 should be made larger than the diameter of the housing 110 while being manufactured to have the same diameter. On the other hand, on the outer surface of the upper plate (120a) and the lower plate (120b) a plurality of mounting holes (124a, 124b) and the connector (128a, 128b) are formed equal to each other. That is, on the outer surface adjacent to the circumferential surface of the upper plate (120a), a plurality of mounting holes (124a) are formed in a circular arrangement at equal intervals and a ring-shaped connector (128a) is formed in the center portion, the outer surface of the lower plate (120b) In the same manner, the mounting holes 124b and the connector 128b having the same shape are formed at the same position. The wheels 126a and 126b are rotatably mounted to the respective mounting holes 124a and 124b. At this time, each wheel (126a, 126b) should be mounted so that the direction of rotation toward the center of the upper plate (120a) and lower plate (120b). Further, each wheel 126a, 126b should be arranged to draw a virtual circle that is larger than the circumferential surface of the top plate 120a or the bottom plate 120b.

On the other hand, the housing 110 and the lower plate (120b) having a structure that is separated from each other, or the housing 110 and the upper plate (120a) is coupled after the expansion member 150 is first fitted before being coupled to each other. The expansion member 150 is made of a rubber material, and has a hollow shape to have the same inner diameter as the outer diameter of the housing 110. In this case, an expansion space 152 is formed inside the expansion member 150. That is, the expansion member 150 is formed as an integral hollow tube to be inflated by placing the expansion space 152 between the inner diameter and the outer diameter. At one end or the other end of the expansion member 150, an air connector 154 is formed to blow air into the expansion space 152. In addition, a roll part 156 having a shape recessed inward is formed on an outer surface of the expansion member 150. A plurality of circular protrusions 158 may be formed in the roll part 156 thus formed (see FIG. 5A).

In addition, the expansion member 150 may be formed in a scoop shape without the roll portion 156, as shown in Figure 5b. In addition, a plurality of circular protrusions 158 may be formed on the outer circumferential surface of the swell-type expansion member 150.

The state of use of the non-excavation partial repair device 100 for the pipe will be briefly described.

6a and 6b is a view showing a state of use of the non-excavation partial repair device for the pipeline.

First, in consideration of the inner diameter of the sewer pipe 210, the maintenance device 100 of the appropriate standard is selected. Here, the repair device 100 is manufactured to a preset standard according to the pipeline sewer pipe 210 which is a standard standard. That is, the diameter of the housing 110, the diameter of the upper plate (120a) and the lower plate (120b), the diameter of the expansion member 150 and the expansion space 152, the mounting holes (124a, 124b) and the wheels (126a, 126b) The size and the like are produced at a constant set value according to the diameter of the conduit 10. At this time, the wheels (126a, 126b) of the repair device 100 should be designed to fit the inner wall of the pipeline 210 in the pipeline sewer (210).

Next, the repair felt 240 is wound around the outer circumferential surface of the expansion member 150 and fixed. At this time, the repair felt 40 should be impregnated with a curing agent, the air connector 154 of the expansion member 150 should be connected to the air hose 230 connected to the compressor (not shown). And the size of the repair felt 240 is preferably prepared to be a little larger than the inner diameter of the pipeline sewer pipe (210). The repair device 100 thus prepared is entered into the pipeline. At this time, the probe 220 in the pipeline sewer pipe 210 should be prepared in advance. At this time, if the probe 220, the pipeline sewer pipe 210 can be taken with a camera to send a real-time image to an external worker, should be able to lead the repair device 100. By the probe 220, the repair device 100, which was in the pipeline sewer 210, arrives at the damaged part and prepares to inflate.

When the preparation is completed as described above, the compressor is operated to supply air to the expansion member 150 along the air hose 230. In the subsequent air supply, the expansion space 152 is quickly inflated and the felt 240 wound around the outer circumferential surface of the expansion member 150 is in close contact with the damaged portion. At this time, the repair felt 240 is in close contact with the pipeline sewer pipe 210 by a strong pressure, and the applied hardener is hardened in the pipeline sewer pipe 210 while hardening.

When the hardener has hardened, stop the compressor to stop the air supply. When the air is interrupted, the inflated expansion member 150 is returned to its original state again, and the repair device 100 that is finished is pulled out by the probe 220.

However, in the case of such partial repairs, it is difficult to check whether or not the partial repairs are abnormal. Sometimes a technique is used to recognize the change in the pressure of water supplied by supplying water between the maintenance check packers, but the exhaust pipe that discharges the internal air does not always achieve a constant horizontal position due to the movement of the maintenance check packers. The pressure varies with each test, and the value of the test results is not reliable.

The present invention is to solve this problem, an object of the present invention is to provide a sewage pipe partial repair test apparatus and method using a vacuum to have an objectivity in the test results using the watertight and vacuum the partially repaired sewage pipe.

Another object of the present invention is to expand the pair of packers located in the partially repaired sewer pipe to seal the space and to apply a vacuum to the closed maintenance space to measure regardless of position, and at the same time to rotate the camera to check the inner diameter The purpose of the present invention is to provide a sewage pipe partial repair test apparatus and method by using a vacuum to visually check the repair inner diameter.

To this end, the present invention is a pair of maintenance confirmation airtight maintenance repair packer each having an expansion member to expand the air hose;

A water supply pipe for supplying water for a watertight test to the sewer pipe between the maintenance check packer and the repair felt site from a replenishing tank;

A rotary joint having a weight body at the bottom of the exhaust hose, always up, at the tip of the exhaust pipe to exhaust air between the maintenance check packers;

A vacuum pump for sucking air to discharge the sewage pipe through the exhaust hose;

When the evacuation of the vacuum pump is completed, it should include a vertical test tube whose level is determined through the exhaust hose by the hydraulic pressure of the refill bottle.

The present invention also includes a vacuum gauge installed in the exhaust pipe to recognize the internal vacuum change after the completion of the vacuum; And

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The apparatus further includes a visual checking device for checking an abnormality in the repairing part in the vacuum by a camera rotating in the front direction of the repairing felt.

The method of the present invention checks the partially repaired position of the sewer pipe to seal both sides of the repair with a pair of repair check packers and supply water to test whether the partial repair position is abnormal due to the water level fluctuation,

Confirming the repaired position and moving the pair of maintenance check packers to inflate the packer;

Supplying water through a maintenance check packer to a space between the packers;

Evacuating with a vacuum pump until there is no internal space with the exhaust hose always up inside the exhaust pipe;

Closing the vacuum means valve when water in the maintenance confirmation space rises during vacuum suction;

Subsequently, the water level is identified by the vertical test tube 7 in communication with the exhaust hose 362 to confirm the watertightness.

As described above, the present invention shortens the supply time of the water by applying a vacuum when water is supplied from the space between the two maintenance check packers during the watertight test of the partially repaired sewer pipe part, and when the air is removed, To ensure that the objective objective of the watertight test data can be obtained by always allowing the top of the exhaust lake to be discharged upwards to ensure that the internal air is completely drained and always providing a constant level and pressure.

In addition, the repaired area is expanded and sealed with both packers, and a vacuum is applied between them to check whether there is an abnormality in the repaired area by changing the vacuum. To help.

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

Figure 2 is an exploded perspective view showing a non-excavation partial repair device for a general sewer pipe,

3 is a combined perspective view showing a non-excavation partial repair device for a sewer pipe;

4 is a cross-sectional view taken along the line A-A shown in FIG.

5a and 5b are views showing another embodiment of the expansion member,

7 is a configuration diagram of a test apparatus of the present invention,

8 is an enlarged cross-sectional view of the main portion of the present invention;

9 is a cross-sectional view showing a test process of the present invention,

FIG. 10 is a cross-sectional view of the test site of FIG. 9;

11 is an enlarged cross-sectional view showing main parts of another embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

4; Water supply pipe 5; Exhaust valve 6; Exhaust pipe 7; Watertight test tube 10; Downstream plug 11; Water pipe 12, 21; Water valve 20; Upstream plug 22; Reverse valve 23; Air supply tip 30; Connection hose 31, 32; One-touch Accessory 100; Repair 110; Housing 120a; Top plate 120b; Bottom plate 126a, 126b; Wheel 128a, 128b; Connector 150; Expansion member 154; Air connector 210; Sewage pipe 220; Probe 230; Air hose 240; Repair felt 300; Repair OK packer 310; housing 320a; top plate 320b; bottom plate 326a, 326b; wheels 328a, 328b; connector 350; expansion member 354; air connector 360; rotary joint 361; rotary hole 362; air hose 363; weight 400; vacuum pump 500 ; Vision check device 510; Transparent cover 520; Camera 521; Camera holder 522; Camera line 530; Deceleration motor 531; Motor drive line 532; Motor fixture 533; Fixing screw

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

7 is a configuration diagram of the test apparatus of the present invention, Figure 8 is an enlarged cross-sectional view of the main portion of the present invention, Figure 9 is a sectional view showing the test process of the present invention, Figure 10 is a cross-sectional view of the test site of Figure 9, Figure 11 In the main portion enlarged cross-sectional view showing another embodiment of the present invention,

A pair of airtight maintenance repair packs for airtight maintenance check portions each having an expansion member that expands with an air hose;

A water supply pipe 4 for supplying water for a watertight test to the sewage pipe between the maintenance check packer 300 and the repair felt portion from the replenishing water tank 8;

A rotary joint 360 having a weight 363 at a lower end of the exhaust hose 362 connected to the front end of the exhaust pipe 6 so as to exhaust air in the maintenance check space between the maintenance check packers 300;

A vacuum pump 400 for sucking air in the sewage pipe 210 at a vacuum pressure through an exhaust hose 362;

When the suction discharge to the vacuum pump 400 is completed is configured to include a vertical test tube (7) is moved through the exhaust hose (362) and the exhaust pipe (6) to the supply water pressure of the refill bottle (8).

The water supply pipe 4 is provided with a detention shut-off valve (V1) so that water is supplied only to the maintenance check space between each maintenance check packer 300, and the exhaust pipe 6 is normally closed with the vertical test tube 7 at the outer end. Shut-off valve (V2),

It is configured to be branched by the vacuum pump 400 and the vacuum means valve (V3) that is closed after completion of the vacuum suction.

In another embodiment of the present invention, as shown in FIG. 11, the bet pipe 210 and the repair felt 240 between the maintenance check a pair of maintenance check packer 300 and the bet for the airtight test for the vacuum pump 400 and A vacuum gauge (Vm) connected to the exhaust pipe (6) for suctioning and evacuating at a vacuum pressure to recognize an internal vacuum change after completion of vacuum; And

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It may be exemplified to include a visual confirmation device 500 for checking the abnormality of the repairing part during the vacuum with the camera 520 rotating in the overall direction of the repairing felt 240.

The time confirmation device 500 includes a reduction motor 530 fixed to one side lower plate 320b of the maintenance check packer 300;

It is configured to include a camera holder 521 fixed to the rotating shaft of the reduction motor 530 fixed to the camera 520 to interlock along the inner diameter of the sewer pipe (210).

The outer surface of the reduction motor 530, the camera 520 and the camera holder 521 is integrally coupled to the outer surface of the lower plate 320b for blocking dust or watertight.

When the water supply through the water supply pipe 4 for supplying water for watertight between the maintenance check packer 300, the internal air of the sewage pipe 210 is installed at the top end, so that the internal air of the sewage pipe 210 is installed at the top end, A rotary joint 360 is added which has a weight 363 at the bottom so that the exhaust hose 362 always comes up and serves to communicate with the internal air and the exhaust pipe 6. That is, a weight body 363 is added to the general rotary joint 360 so as to have directivity.

As a method of testing using the apparatus of this structure comprised in this way,

Check the partially repaired position of the sewer pipe and seal the both sides of the repair felt with a pair of repair check packers and supply water to test the abnormality of the partial repair position due to the water level fluctuation while the pressure is generated.

The position repaired by the camera loaded on the probe 220 shown in FIG. 7 (the position where the felt 240 is installed) is checked, and the pair of maintenance check packers 300 are connected through the interconnects 328a and 328b. After connecting and moving together (S1), by supplying compressed air to the air hose 230, between the two maintenance check packer 300 by expanding the packer expansion member 350 in a dotted line state, for example in FIG. Seal the space of (S2).

Subsequently, the water of the replenishing water bottle 8 is supplied through the water supply pipe 4 to the space between the two maintenance check packers 300 (S3). Of course, it is necessary to open the check valve V1 shown in FIG.

Subsequently, the vacuum hose valve V3 is opened and vacuum suctioned into the vacuum pump 400 until there is no internal space with the exhaust hose 362 which is always on the inner side of the exhaust pipe 6, S4,

If the suction air is exhausted during the vacuum suction and the water rises to the vertical test tube 7 due to the generation of water pressure, the step S5 of closing the vacuum valve V3 is performed.

Subsequently, the water level represented by the exhaust hose 362 and the vertical test tube 7 communicated with the exhaust pipe 6 is recognized, and the water level fluctuation is performed to sequentially check the watertightness of the maintenance check space (S6). Test the watertight at one location.

In the case of using only a vacuum in the device of Figure 11 of the present invention,

Check the position of the repaired repair felt 240 partially repaired of the sewer pipe 210 to seal both sides of the repaired site with a pair of repair check packers 300, and to test the abnormality of the partial repair position,

Checking the position of the repaired repair felt 240 and expanding the packer by moving the maintenance check packer 300 to both sides of the repair felt 240 (S11 and S12);

The water supply pipe 4 for supplying water through the inside of the packer at the space between the two maintenance check packers 300 is blocked by the backflow shutoff valve V1, and is normally opened through the exhaust pipe 6 as shown in FIGS. 9 and 11. Blocking the shutoff valve (V2) to close and opening the vacuum means valve (V3) to operate the vacuum pump 400 to suck the vacuum (S13);

When the vacuum suction is completed (the vacuum suction is completed or not, the vacuum meter (Vm) is known or the controller (not shown) recognizes the value of the instrument to notify the judgment result. Since it is a conventional technology, description thereof will be omitted), the operation of the vacuum means valve V3 is cut off, and the watertightness is confirmed by the change in the value of the vacuum measuring instrument Vm installed in the exhaust pipe 6 (S14). .

At the same time, the camera 520 shown in FIG. 11 is rotated along the inner circumferential surface of the partial repair space in a vacuum state, thereby sequentially checking (S15). In this case, the operation of the camera 520 is coupled to the camera holder 521 coupled to the rotational force of the reduction motor 530 operated by a separate program (an example of a program for controlling the rotation is omitted). ) Rotates together with the rotation shaft 531, and the camera 520 rotates along the camera holder 521, so that the repair inner diameter portion, such as the repair felt 240, can be directly confirmed by the camera image. In particular, the present invention by sealing the coupling to the lower plate 320b to seal the reduction motor 530, the camera holder 521 and the camera 520 portion to the transparent cover 510, between the two maintenance check packer 300 Even in the case of watertight test with water supply, the internal state change can be confirmed in real time. This case can be used when the following method is applied.

That is, the steps S1 to S6 of the method of the present invention test the repair portion in the same watertight manner, and the remaining step S15 performs a process of checking through the camera.

That is, check the partially repaired position of the sewer pipe, seal both sides of the repair felt with a pair of secondary check packers, and supply water to test the abnormality of the partial repair position due to water level fluctuations in the state of pressure.

Confirming the repaired position with the repair felt 240 and expanding the repair check packer 300 by moving a pair of repair check packers between the repair felt 240 (S1 and S2);

Supplying water through a maintenance check packer to a maintenance check space between both maintenance check packers 300 (S3);

Vacuum suction (S4) with an exhaust hose (362) with the upper end always up to communicate with the inside of the exhaust pipe until there is no internal air;

Closing the vacuum means valve V3 of the exhaust pipe 6 when water in the maintenance confirmation space is discharged to the exhaust pipe 6 during the vacuum suction and rises (S5);

Subsequently, step S6 of recognizing the water level represented by the vertical test tube 7 communicated with the exhaust hose 360 and the exhaust pipe 6 to confirm the watertightness is sequentially performed;

 Test the repair space by performing the step (S15) of sequentially checking the inner circumferential surface of the partial repair check space portion with the rotatable camera 520 installed integrally with the repair check packer 300 in the space between the check check packer 300. do.

Claims (9)

delete A pair of airtight maintenance repair packs for airtight maintenance check portions each having an expansion member that expands with an air hose; A water supply pipe 4 for supplying water for a watertight test to the sewage pipe between the maintenance check packer 300 and the repair felt portion from the replenishing water tank 8; A rotary joint 360 having a weight 363 at a lower end of the exhaust hose 362 connected to the front end of the exhaust pipe 6 so as to exhaust air in the maintenance check space between the maintenance check packers 300; A vacuum pump 400 for sucking at a vacuum pressure to discharge the air in the sewer pipe 210 through the exhaust hose 362; When the discharge to the vacuum pump 400 is completed includes a vertical test tube (7) which is moved through the exhaust hose 362 and the exhaust pipe (6) at the supply water pressure of the refill bottle (8) to determine the water level; The water supply pipe 4 is provided with a detention shutoff valve V1 so that water is supplied only to the maintenance check space between each maintenance check packer 300, and the exhaust pipe 6 is normally closed with the vertical test tube 7 at the outer end. With valve V2, Sewage pipe partial repair test apparatus using a vacuum, characterized in that configured to be branched by a vacuum pump 400 and a vacuum means valve (V3) closed after completion of vacuum suction. delete delete According to claim 2, A vacuum gauge (Vm) installed in the exhaust pipe (6) to recognize the internal vacuum change after the completion of the vacuum; And The apparatus further includes a time checking device 500 for checking an abnormality in the repairing part in the vacuum with the camera 520 rotating in the front direction of the repairing felt 240. The time checking device 500 includes a reduction motor 530 fixed to one lower plate 320b of the maintenance check packer 300, A camera holder 521 fixed to the rotating shaft of the reduction motor 530 to fix the camera 520 to interlock along the inner diameter of the sewer pipe 210; The sewer pipe using the vacuum, characterized in that the reduction motor 530, the camera 520 and the camera holder 521 outer surface is integrally coupled to the outer surface of the lower plate (320b) for dust blocking or watertight waterproof transparent cover (510). Partial maintenance tester. delete By using the test apparatus of claim 2, Check the partially repaired position of the sewer pipe and seal both sides of the repaired area with a pair of repair check packers and supply water to test the abnormality of the partial repair position due to the water level fluctuation under the condition of pressure. Checking the repaired position and inflating the maintenance check packer 300 by moving a pair of maintenance check packers 300 (S1 and S2); Supplying water to pass a maintenance check packer into a space between both packers (S3); Vacuum suction into the vacuum pump 400 until there is no internal space with the exhaust hose 360 which is always on the inside of the exhaust pipe (S4); Closing the vacuum means valve V3 when the water in the maintenance confirmation space rises during vacuum suction (S5); Subsequently, the step (S6) of recognizing the water level represented by the vertical test tube (7) communicating with the exhaust hose (362) is sequentially performed to test the watertightness of the partially repaired maintenance position by using the vacuum. Sewer pipe partial repair test method. By using the test apparatus of claim 5, Check the partially repaired position of the sewer pipe and seal both sides of the repaired area with a pair of repair check packers, and test the abnormality of the repaired position. Checking the repaired position with a repair felt 240 and expanding a repair check packer 300 by moving a pair of repair check packers 300 (S11 and S12); Blocking the water supply pipe 4 so as not to supply water through one maintenance check packer 300 to the space between the maintenance check packers 300 and vacuum suctioning air in the maintenance check space through the exhaust pipe 6; S13); After the vacuum suction is completed, the step of blocking the vacuum suction and checking whether or not the water tightness by the change of the value of the vacuum measuring vacuum meter (Vm) installed in the exhaust pipe (S14); At the same time performing a step (S15) of sequentially checking the partial repair confirmation space portion with the camera 520 along the inner circumferential surface in the vacuum state, the sewage pipe partial repair test method using a vacuum, characterized in that for testing the interior space. By using the test apparatus of claim 5, Check the partially repaired position of the sewer pipe to seal both sides of the repaired part with a pair of repair check packers and supply water to test the abnormality of the partial repaired position due to the water level fluctuation under the condition of pressure. Checking the repaired position with a repair felt 240 and expanding a repair check packer 300 by moving a pair of repair check packers 300 (S1 and S2); Supplying water through a maintenance check packer to a maintenance check space between both maintenance check packers 300 (S3); Vacuum suction (S4) to an exhaust hose 362 which always has an upper end so as to communicate with the inside of the exhaust pipe 6 until there is no internal air in the maintenance check space (S4); A step of closing the vacuum means valve V3 of the exhaust pipe 6 when the water in the maintenance confirmation interior space is discharged to the exhaust pipe 6 during the vacuum suction and rises; Subsequently, step S6 of recognizing the water level represented by the vertical test tube 7 in communication with the exhaust hose and the exhaust pipe 6 and confirming the watertightness is sequentially performed;  Partial repair of sewer pipes using vacuum, characterized in that the repair space is tested by performing the step (S15) of sequentially checking the inner circumferential surface of the partial repair space with a rotatable camera installed integrally with the maintenance check packer in the space between the maintenance check packers. Test Methods.