KR102534811B1 - Smoke testing equipment for pipe & culvert inspection - Google Patents

Abstract

Disclosed is a smoke test equipment for conduit inspection that is used to determine the penetration path of inflow or intrusion water by forcibly injecting smoke generated from a rod-shaped smoke material into an underground conduit facility. Smoke test equipment for conduit inspection according to the present invention is formed with a ring or annular packer part including an air-injected volume-variable elastic packer, and a larger diameter than the packer part at the top of the packer part, so as to block the manhole entrance together with the packer part. It includes a cover part to be installed and a tubular main body part having a blower disposed on the upper part of the cover part and forcibly discharging smoke generated by the smoke ash to a conduit facility through the cover part, and the main body part is formed in the cover part and communicates with the inner space of the packer part. The main point is that it is directly connected to the fastening pipe part, and at least two or more smoke ash fixing units are installed around the upper end opening of the main body part.

Description

Smoke testing equipment for pipe & culvert inspection}

The present invention relates to a smoke screen test equipment, and in particular, by forcibly injecting smoke into an underground conduit facility, the watertightness of pipe connections or the penetration path of inflow due to cracks can be easily grasped without excavation or worker input It relates to smoke test equipment for pipe inspection.

In general, conduit facilities buried underground are damaged due to deterioration, shock, external pressure, etc. after a certain period of time, resulting in cracks. In this way, when the conduit facility is damaged, inflow water or inflow is generated through the damaged part, causing problems such as drinking water contamination, soil contamination, and groundwater contamination.

Conventionally, the repair work was carried out by finding the part where the damage of the conduit facility is expected through the excavation, and repairing the damaged part found in this way or replacing it with a new sewer pipe. However, this method of finding and repairing a damaged section through simple guessing has a problem in that the prediction accuracy of the damaged section is significantly low, causing excessive time and material loss.

Accordingly, several types of inspection methods have been proposed to quickly and accurately find damaged areas without excavation, and one of them is a watertight inspection. The watertightness inspection is an inspection that blocks the section where damage to the conduit facility is expected with a sealing device, and finds the inflow or ingress route due to cracks or misalignment of the pipeline through the watertightness inspection of the closed section.

Watertightness inspection is generally performed on sewage pipes or junction pipes (including interception pipes), and includes an infiltration test to measure the amount of water infiltrating into the pipe from the outside, and an infiltration test to measure the amount of leaching from within the pipe to the outside of the pipe. It is classified as an exfiltration test. The penetration test includes a pumping test, and the leaching test includes a leak test, an air pressure test, and a hydraulic pressure test of a pumped pipe.

As another form of watertightness inspection to find out whether there is a misconnection of the pipeline or the path of inflow or ingress water due to cracks, recently, a smoke test, dye test, acoustic test, etc., which can further shorten the inspection time, have been used. Such smoke test, dye test, acoustic test, etc. can be performed by selecting an appropriate one according to the ground environment or installation environment of the target area during pipeline maintenance.

Among them, the smoke test is a method that can quickly find the location of inflow water at a relatively low cost. From the flow of smoke injected into the conduit facility, the watertight state of the pipe connection or the infiltration path of inflow water due to cracks, etc. It is a test to find out Since inflow water is caused by roof gutters, fountains and building drainage, and pipeline misalignment, it can be sufficiently identified by a smoke screen test.

1 is a picture for a drawing showing a conventional smoke test equipment for conduit inspection.

As shown in FIG. 1, the conventional smoke test equipment for conduit inspection largely connects the body part 100 equipped with the blower 110 and the manhole cover part 300, and the main body part 100 and the manhole cover part 300. It is composed of a flexible pipe 200 to. The manhole cover part 300 is installed like the manhole cover at the entrance of the manhole from which the manhole cover is removed, and the main body part 100 transfers the smoke of the smoke material to the air flow generated by the blower to the manhole cover part 300. do.

The smoke transmitted to the manhole cover part 300 through the flexible pipe 200 is forcibly discharged to the underground conduit facility of the test section by the air flow caused by the blower 110, and the underground of the test section If there is a problem such as a crack or misalignment while flowing through the conduit facility, it leaks to the outside through the relevant part. At this time, the worker can identify the point of the problem by visually checking the leaked smoke.

As mentioned above, the smoke test performed through dedicated equipment (smoke test equipment for conduit inspection) is a method that quickly and inexpensively identifies the watertightness of pipe connections or the penetration path of inflow water due to cracks. Although it is a method with advantages, there is a problem that the conventional dedicated equipment (dedicated equipment in FIG. 1) used for this purpose is inconvenient to handle or use.

That is, in the conventional smoke test equipment for conduit inspection as shown in FIG. 1, since the body part 100 and the manhole cover part 300 are separately configured, inconvenience is inevitably accompanied when moving the equipment, and safe movement of the equipment Since the equipment had to be handled in the on-site assembly method after moving in a state where the main body part 100 and the manhole cover part 300 were separated, there is a problem that time loss is large in moving the equipment and disassembling and assembling the equipment therefor.

Korean Registered Patent No. 10-0958388 (registration date 2010.05.10) Korean Registered Patent No. 10-1668837 (registration date 2016.10.18)

The technical problem to be solved by the present invention is to provide a smoke test equipment for conduit inspection that can save time and can be used immediately on site because disassembly and assembly are not required, and can be easily moved and handled to provide convenience in use. will be.

According to the present invention as a means of solving the problem,

It is a device used to forcibly inject the smoke generated from the rod-shaped smoke material into the underground conduit facility to determine the inflow path of inflow or intrusion water,

A ring or annular packer portion including an elastic packer;

a cover part formed at an upper end of the packer part to have a larger diameter than the packer part and installed to block the manhole entrance together with the packer part; and

A tubular body portion disposed above the cover portion and having a blower for forcibly discharging the smoke generated by the smoke ash to a conduit facility through the cover portion; includes,

The body part is formed in the cover part and is directly connected to the fastening pipe part communicating with the inner space of the packer part,

It is intended to provide smoke test equipment for conduit inspection in which at least two smoke material fixing rods for fixing the smoke material are installed around the upper opening of the body part.

The smoke test equipment for conduit inspection according to the present invention may further include a movable support part connected to the cover part or the body part for moving the equipment.

Here, the movable support may be configured to horizontally move and elevate the equipment.

More specifically, the movable support unit includes a pair of support units disposed opposite to each other with the cover unit interposed therebetween and having at least two or more casters mounted on each lower end, a connection unit interconnecting the support units and having a handle, and the support unit and a cover portion or a lifting cylinder provided to connect the support and the main body portion.

In addition, a blower cover may be installed at an upper end of the main body to open and close the top opening.

In addition, an air inlet is installed in the cover portion to be exposed to the upper surface of the cover portion, and the air inlet is connected to the elastic packer through a dedicated pipe or hose, so that the air injected through the air inlet is supplied to the elastic packer. Accordingly, as the elastic packer expands, the sealing property between the cover part and the manhole inlet increases, and the binding force of the cover part to the manhole inlet increases.

Preferably, the diameter of the packer part is smaller than the manhole inlet diameter so that the packer part can be completely inserted into the manhole inlet side in a state where the elastic packer is not inflated, and the edge of the cover part is on the ground or at the top of the manhole around the manhole inlet The diameter of the cover part may be formed larger than at least the inlet diameter of the manhole so that it can be mounted in a straddling form.

In addition, the smoke material holder may have a structure in which a gripper is attached to an end of a bracket attached to an outer surface of the main body so as to be tiltable up and down.

In addition, the elastic packer may be an air-injected volume-variable elastic packer that expands in a radial direction when air is injected and firmly adheres to the manhole inlet.

According to the smoke test equipment for conduit inspection according to an embodiment of the present invention, the cover part and the body part are integrally composed of one body, and it is possible to save time and use it immediately in the field because there is no need for conventional disassembly and assembly. It has the advantage of improving work efficiency and providing convenience in use because it is very easy to move and handle.

1 is a drawing substitute photo showing a conventional smoke test equipment for conduit inspection.
Figure 2 is a perspective view of a smoke test equipment for conduit inspection according to an embodiment of the present invention.
3 is a front view of a smoke test equipment for conduit inspection according to an embodiment shown in FIG. 2;
4 is a cutaway perspective view of the smoke test equipment for conduit inspection according to an embodiment shown in FIG. 2;
5 is an enlarged view of the blower cover at the top of the main body of the smoke test equipment for conduit inspection of FIG. 2;
Figure 6 is an enlarged perspective view of the main part of the present invention, which is an enlarged view of an excerpted and enlarged portion of the smoker holder of FIG.
7 is a view showing another preferred embodiment of the smoke material holder.
Figure 8 is a perspective view showing another preferred embodiment of the smoke test equipment for conduit inspection.
Figure 9 is a front view of the smoke test equipment for conduit inspection shown in Figure 8;
10 is a state diagram showing a state in which smoke test equipment for conduit inspection according to the present invention is installed at the entrance of a manhole in a test section for a smoke test for an underground conduit facility.

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

In describing the present invention, terms used in the following specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, the terms "include" or "having" in this specification are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other It should be understood that the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Also, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

In addition, terms such as "...unit", "...unit", and "...module" described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. can

In the description with reference to the accompanying drawings, the same reference numerals will be given to the same components, and overlapping descriptions thereof will be omitted. In addition, in the description of the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

2 is a perspective view of a smoke test equipment for conduit inspection according to an embodiment of the present invention, and FIG. 3 is a front view of a smoke test equipment for conduit inspection according to an embodiment shown in FIG. 2 . And Figure 4 is a cutaway perspective view of the smoke test equipment for conduit inspection according to an embodiment shown in FIG. 2, and Figure 5 is an enlarged view of the blower cover at the top of the main body of the smoke test equipment for conduit inspection of FIG.

2 to 5, the smoke test equipment 1 for conduit inspection according to an embodiment of the present invention forcibly injects the smoke generated from the rod-shaped smoke material C into the underground conduit facility to inflow water ( It is a device used to determine the inflow path of inflow or intrusion water, and includes a packer unit 10. The packer unit 10 includes a ring or annular rim 12 and an elastic packer 14 installed to surround an outer surface of the rim 12 .

At the outer edge of the lower end of the rim, a separation prevention bump 13 for preventing the lower separation of the elastic packer 14 may protrude a predetermined length in the radial direction of the rim 12, and the elastic packer 14 injects air into the inside. It may be configured in the form of an air-injected volume-variable tube made of an elastic material such as rubber or silicone, which expands in the radial direction when the air is released and contracts back to its original state when the air is removed.

A cover part 20 is formed at the upper end of the packer part 10 . The cover part 20 may be integrally formed with the packer part 10 with a larger diameter than the packer part 10, and is installed to block the manhole inlet E together with the packer part 10 when in use. At the center of the upper surface of the cover part 20, a cylindrical fastening pipe part 22 communicating with the inner space of the packer part 10 (the inner space of the rim) is formed, and the air inlet 24 is formed on one side of the cover part 20. It may be provided so as to be exposed to the upper surface.

The air inlet 24 provided to be exposed to the upper surface of the cover part 20 is connected to the elastic packer 14 through a dedicated pipe or hose (not shown) disposed along the lower surface of the cover part 20, thereby providing air The air injected through the inlet 24 may be supplied to the elastic packer 14, and the elastic packer 14 is inflated with the air supplied from the air inlet 24, thereby forming the cover part 20 and the manhole inlet E. The sealing property between them is secured and the bonding force of the cover part 20 to the manhole inlet E is increased.

The diameter D1 of the packer part 10 is preferably standardized so that the packer part 10 can be completely inserted into the manhole entrance E side without interference in a state where the elastic packer 14 is not inflated. It is formed smaller than the diameter (D2) of (E), and the diameter (D3) of the cover part 20 is mounted on the ground or the top of the manhole around the manhole inlet (E) in a form where the edge of the cover part 20 spans. It can be formed larger than the diameter (D2) of at least the manhole inlet (E) so that it can be formed.

The upper part of the cover part 20 is configured with the main body part 30 . The body part 30 is formed on the cover part 20 and may be combined with the above-described fastening pipe part 22 communicating with the inner space of the packer part 10 . For example, it may be directly connected to the cover part 20 through a flange coupling as illustrated in the drawings. The body part 30 includes a tubular, preferably cylindrical housing 32 directly connected to the fastening pipe part 22 and a blower 34 accommodated inside the housing 32.

The blower 34 generates a strong air flow toward the conduit facility and serves to forcibly discharge the smoke caused by the smoke material C to the conduit facility through the cover part 20. Such a blower 34 may be a general configuration consisting of a motor unit 340 that generates rotational force when power is applied and a fan 342 coupled to a rotational shaft of the motor unit 340. At this time, the motor unit 340 is a separate It may be installed in a structure concentrically arranged inside the housing 32 with a support bracket (symbol omitted) or the like.

A blower cover 35 may be installed at an upper end of the housing 32 of the main body 30 accommodating the blower 34 . The blower cover 35 may preferably be configured to open and close the opening 320 at the top of the housing 32 . For example, as shown in the drawing, one end of the outer edge rotates in the horizontal direction at the upper end of the housing 32 through the hinge portion 33 composed of the hinge shaft 330 and the hinge body 332 rotatably accommodating the hinge shaft 330 can be made possible.

Accordingly, when the equipment is not in use, the blower cover 35 can be closed to prevent dust or foreign matter from entering the housing 32, and the blower cover 35 can be opened only when the equipment is in use. The desired test (smoke test) can be performed.

6 is an enlarged perspective view of the main part of the present invention showing an enlarged portion of the smoker holder holder of FIG. 2, in which the smoker holder 36 is installed around the upper opening 320 of the body portion 30. The smoke material holder 36 is placed around the upper opening 320 of the body portion 30 into which outside air is forcibly introduced when the blower 34 drives the rod-shaped smoke material C, which generates a large amount of smoke when ignited. As a means for fixing, it may be composed of at least two or more.

Each smoke material holder 36 is preferably, as shown in the example of FIG. 6, a gripper 362 is attached to the end of the bracket 360 attached to the outer surface of the body portion 30 so as to be tiltable up and down. configuration, or as in the example of FIG. 7 showing another preferred embodiment of the smoke material holder 36, the tongs 362 are connected to the bracket 360 by a ball joint 365 to move up and down as well as left and right. It may also be a configuration in which the angle is freely adjusted.

In some cases, the smoke material holder 36 may be configured to be rotatable in a horizontal direction with respect to the housing 32 of the main body 30. In this case, the smoke material (C) is easily moved to a position where the smoke is not dispersed to the outside according to the direction of the wind and can be smoothly forcibly introduced into the body part 30 through the opening 320 of the housing 32. This can reduce working time and improve work efficiency.

The smoke material (C) fixed to the smoke material holder 36 is a solid smoke material (C), which may be rod-shaped or chalk-shaped, and includes a white, red, gray, etc. colored smoke agent. Smoke generated by the smoke material C is forcibly introduced into the main body part 30 by the suction force acting on the opening 320 by the blower 34, and the cover part 20 and the packer part on the other side Through (10), it can be forcibly discharged to the underground conduit facility side of the test section.

Previously, reference numeral 40 in FIGS. 2 and 3, which has not been described, indicates a control box. In this control box 40, an overcurrent circuit breaker that protects the blower 34 from overcurrent by automatically cutting off the circuit when overcurrent is applied to the power switch for turning ON/OFF of the above-described blower 34 and preventing current from flowing can be installed. And, if necessary, a space capable of accommodating the abrasive material (C) may be partitioned.

8 and 9 are views of a smoke test equipment for conduit inspection according to another preferred embodiment of the present invention, and FIG. 8 is a perspective view showing another preferred embodiment of the smoke test equipment for conduit inspection, and FIG. It is a front view of the smoke test equipment for conduit inspection shown in 8.

The smoke test equipment for conduit inspection according to another preferred embodiment of the present invention shown in FIGS. 8 and 9 includes the cover part 20 or the body part 30 of the smoke test equipment for conduit inspection according to the above-described embodiment. ) It is possible to provide the convenience of movement of the equipment by further including a movable support 50 connected to. Since the configurations of the packer unit 10, the cover unit 20, and the body unit 30 are the same as those described above, repeated descriptions thereof will be omitted.

The movable support 50 applied to the present embodiment may be configured to horizontally move equipment and elevate the equipment on the installation target surface. Specifically, the movable support unit 50 includes a pair of supports 52 disposed oppositely with the cover unit 20 interposed therebetween, a connection unit 54 interconnecting the support units 52, and the support unit 52 and the cover. It may include a lifting cylinder 58 provided to connect between the part 20 or the support 52 and the body part 30 .

At the lower end of each of the pair of supports 52, at least two or more rotatable casters 53 are mounted so that the equipment can be freely moved in the horizontal direction or rotated in the horizontal direction according to the position of the manhole entrance E. And, the connecting rod 54 may be provided with a handle that can be gripped by an operator to move the equipment. And, the elevating cylinder 58 may be configured in the form of a double-acting cylinder operated by hydraulic pressure or pneumatic pressure.

The smoke test process for underground conduit facilities performed through the smoke test equipment for conduit inspection of this configuration will be briefly reviewed in connection with the operation of the smoke test equipment for conduit inspection. Hereinafter, the above-described smoke test equipment to which the movable support 50 is attached will be described as an example.

10 is a state diagram showing a state in which the smoke test equipment for conduit inspection according to the present invention is installed at the entrance of a manhole in a test section for a smoke test for an underground conduit facility.

Referring to FIG. 10 and the preceding FIGS. 2 to 9 together, in performing a smoke test on an underground conduit facility in order to determine the inflow path of inflow or intrusion water, first, a test section is set, Check the manhole belonging to the test section and other manholes neighboring it. Then, go down to the manhole and install a plug (or 'packer', P) in the pipe in front of each manhole based on the direction of the water flow, and inject air to block the water flow.

Then, in a state where the smoke test equipment 1 according to the embodiment of the present invention is accurately positioned on the upper side of the entrance E of the manhole located on the upstream side with respect to the direction of the flowing water among the two manholes, the elevating cylinder 58 After operating it downward and placing the smoke test equipment at the entrance of the upstream manhole, air is injected into the elastic packer 14 to inflate it so that the equipment adheres tightly to the manhole entrance.

Next, the blower cover 35 on the top of the main body 30 is turned to the right or left to open the opening 320 through which the outside air flows in, ignite the smoke ash C, and then the main body 30 When the blower 34 is operated by turning the power switch on after fixing it to the smoke material holder 36, the smoke of the smoke material C is forcibly introduced into the main body 30 together with the outside air, and the ground of the test section Forced discharge towards the conduit facility.

The smoke is carried in the air by the strong blowing force generated by the blower 34 and flows through the underground conduit facility of the test section at high speed, and leaks to the outside through the corresponding part if there is a problem such as a crack or misalignment. At this time, the worker identifies the problem point (the point where the crack or misalignment occurred) from the location of the leaking smoke.

Conventional smoke test equipment for conduit inspection has a problem that is accompanied by inconvenience when moving the equipment because the body part and the manhole cover part are separately configured. In addition, since the equipment must be handled in the field assembly method after moving with the body part and the manhole cover part separated for safe movement of the equipment, there is a problem that time loss is large in moving the equipment and disassembling and assembling the equipment for this.

On the other hand, the smoke test equipment for conduit inspection according to an embodiment of the present invention is configured as an integral structure in which the cover part and the body part are made of one body, and it is possible to save time as it does not require disassembly and assembly as in the prior art, and can be used immediately on site. It is possible to improve work efficiency, and it has the advantage of providing convenience in use because it is very easy to move and handle.

In the above detailed description of the present invention, only special embodiments have been described accordingly. However, it should be understood that the present invention is not limited to the particular forms mentioned in the detailed description, but rather it is understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims. It should be.

1: Smoke test equipment for conduit inspection 10: Packer part
12: rim 13: breakaway bump
14: turnable packer 20: cover part
22: fastening pipe part 24: air inlet
30: body part 32: housing
33: hinge part 34: blower
36: smoke ash holder 35: blower cover
40: control box 50: movable support
52: support 53: caster
54: connecting rod 55: handle
58: lifting cylinder 320: opening
330: hinge axis 332: hinge body
340: motor unit 342: fan
360: bracket 362: tongs
365: ball joint C: smoke material
E: manhole entrance P: plug

Claims (9)

It is a device used to forcibly inject the smoke generated from the rod-shaped smoke material into the underground conduit facility to determine the inflow path of inflow or intrusion water,
A ring or annular packer portion including an elastic packer;
a cover part formed at an upper end of the packer part to have a larger diameter than the packer part and installed to block the manhole entrance together with the packer part;
a tubular main body portion disposed above the cover portion and having a blower for forcibly discharging the smoke generated by the smoke ash to a conduit facility through the cover portion; and
A movable support part directly coupled to the cover part or the body part so as to horizontally move the equipment and elevate the equipment; includes,
The body part is formed in the cover part and is directly connected to the fastening pipe part communicating with the inner space of the packer part,
The movable support part includes a pair of supports having at least two or more casters mounted on a lower end of each of the pair of supports disposed opposite to each other with the cover part interposed therebetween, and a connecting rod connecting the supports to each other and having a handle, the support and the cover part. Or the support and the main body are connected through a lifting cylinder,
At least two or more abrasive fixing rods are installed around the upper opening of the main body for fixing the abrasive, and the abrasive fixing rods are connected to the end of the bracket attached to the outer surface of the main body by a ball joint so that the upper and lower And smoke test equipment for conduit inspection, characterized in that tiltable from side to side.
delete delete delete According to claim 1,
Smoke test equipment for conduit inspection in which a blower cover is installed at the top of the main body to open and close the top opening.
According to claim 1,
An air inlet is installed in the cover unit so as to be exposed to the upper surface of the cover unit,
The air inlet is a smoke test equipment for conduit inspection connected to the elastic packer by a dedicated pipe or hose.
According to claim 1,
The diameter of the packer part is smaller than the manhole inlet diameter so that the packer part can be completely inserted into the manhole inlet side in a state where the elastic packer is not inflated,
Smoke test equipment for conduit inspection, in which the diameter of the cover part is formed at least larger than the diameter of the manhole entrance so that the edge of the cover part can be mounted on the ground or at the top of the manhole around the manhole entrance.
delete According to claim 1,
The elastic packer is an air-injected volumetric variable elastic packer, smoke test equipment for conduit inspection.

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