CN115488114B - Tunnel drainage system cleaning device and method and cleaning hemisphere structure design method - Google Patents
Tunnel drainage system cleaning device and method and cleaning hemisphere structure design method Download PDFInfo
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- CN115488114B CN115488114B CN202210877679.7A CN202210877679A CN115488114B CN 115488114 B CN115488114 B CN 115488114B CN 202210877679 A CN202210877679 A CN 202210877679A CN 115488114 B CN115488114 B CN 115488114B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000013461 design Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000007689 inspection Methods 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a cleaning device and a cleaning method for a tunnel drainage system and a cleaning hemisphere structure design method. The cleaning hemisphere comprises a shell-shaped cylindrical section and a hemisphere section, a V-shaped groove is formed in the end portion of the hemisphere section, a reverse filtering layer is arranged in the V-shaped groove, and a nozzle cover is further arranged on the hemisphere section. The liquid injection pipe is formed by splicing a plurality of pipe joints. The invention is suitable for circular pipelines with various diameters of tunnel drainage systems, can realize long-distance pipeline flushing and cleaning, improves tunnel maintenance efficiency, and reduces maintenance cost. Meanwhile, through the design of the device for cleaning the hemispherical structure, the device can achieve the optimal cleaning effect, a large amount of flushing liquid can be saved, green construction is met, and resource conservation advocates are responded.
Description
Technical Field
The invention belongs to the field of tunnel drainage systems, and particularly relates to a cleaning device and a cleaning method for a tunnel drainage system and a cleaning hemisphere structure design method.
Background
The tunnel drainage system is often accompanied by the increase of the operation years, the blockage of the drainage pipeline is more serious, the blockage or complete failure of the tunnel drainage system is caused, and then the occurrence of cracks, water leakage and other diseases of the tunnel structure are caused, the tunnel structure is seriously caused to be in a high water pressure state, the tunnel lining structure is blocked or collapses, and a certain threat is caused to the tunnel traffic safety. At present, the tunnel drainage pipeline is usually cleaned by injecting high-pressure water or other descaling solutions, and two pipeline dredging and cleaning technologies are generally adopted: 1. chemical cleaning: using acid liquor, alkali liquor or organic solvent; 2. and (3) physical cleaning: mechanical dredging, water flushing dredging and air-water pulse. Because the drain pipelines have different sizes, the existing single cleaning equipment cannot adapt to scale removal of all types of drain pipelines, is also only suitable for local cleaning, and cannot realize long-distance pipeline cleaning.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cleaning device and a cleaning method for a tunnel drainage system and a cleaning hemisphere structure design method aiming at the defects of the background technology. The invention is suitable for circular pipelines with various diameters of tunnel drainage systems, can realize long-distance pipeline flushing and cleaning, improves tunnel maintenance efficiency, and reduces maintenance cost; meanwhile, through the design of the device for cleaning the hemispherical structure, the device can achieve the optimal cleaning effect, a large amount of flushing liquid can be saved, green construction is met, and resource conservation advocates are responded.
The invention adopts the following technical scheme for solving the technical problems:
the utility model provides a tunnel drain pipe belt cleaning device, includes the wash pipe, and the wash pipe is including annotating the liquid pipe, annotate liquid pipe week side intercommunication and be provided with flexible pipe, the one end threaded connection that annotates the liquid pipe is kept away from to flexible pipe has the washing hemisphere.
Further, the cleaning hemisphere comprises a shell-shaped cylindrical section and a hemisphere section, a V-shaped groove is formed in the end portion of the hemisphere section, a reverse filtering layer is arranged in the V-shaped groove, and a nozzle cover is further arranged on the hemisphere section.
Furthermore, the liquid injection pipe is formed by splicing a plurality of pipe joints.
A cleaning method of a tunnel drain pipe comprises the following steps:
s1, determining the position of a drain pipe and performing drilling inspection so as to determine the inner diameter of each section of pipeline in the drain pipe and the blocking condition of the interior of the pipeline;
s2, splicing a plurality of pipe joints into a cleaning pipe, and adjusting the length of the telescopic pipe according to the inner diameter of each section of pipeline in the drain pipe so that the distance between the cleaning hemisphere and the inner wall of the drain pipe is 15-20 cm; then slowly placing the spliced liquid injection pipe to a designated position along the inner wall of the drain pipe to be cleaned;
s3, injecting pressurized liquid through a cleaning pipe; pressurized liquid flows into the cleaning hemisphere through the telescopic tube, is sprayed out through the V-shaped groove nozzle, is sprayed into the drain pipe, and is partially attached to the inner wall;
s4, driving the telescopic pipe and the cleaning hemisphere to synchronously rotate by rotating the liquid injection pipe, and adding the rotation, so that the drainage pipeline can be cleaned in all directions;
and S5, after the cleaning is finished, the cleaning device is retracted.
A design method for cleaning hemispheres, comprising the steps of:
step 1, defining the half angle of a V-shaped groove as a slotting half angle alpha, slotting depth as t, and the included angle between outer contour tangents at two sides of jet water emitted by a cleaning hemisphere as a diffusion angle theta, wherein the radius of a hemispherical section is r, the diameter of a cylindrical section is d, the length of the cylindrical section is L, and the flow rate of pressurized liquid is q;
wherein, as the slotting half angle alpha of the V-shaped slot is increased, the thickness of the jet water is increased, so that the surface tension of the jet water is increased, the jet water is not easy to diffuse, and finally the diffusion angle theta is reduced, and the cleaning range is reduced; when the slotting half angle of the V-shaped groove is increased, the sectional area of the outlet is increased, so that the flow is increased;
the optimal slotting angle is obtained according to the relation between slotting half angle and diffusion angle and flow:
diffusion angle vs. slotted half angle:
θ＝a 1 +b 1 ×α (1)
wherein: θ—diffusion angle; alpha-slotting half angle; a, a 1 、b 1 -scaling factor, wherein b 1 ＜0，60°≥α≥25°；
Flow and slotted half angle relationship:
q＝a 2 +b 2 ×α (2)
wherein: q-flow; alpha-slotting half angle; a, a 2 、b 2 -scaling factor, wherein b 2 ＞0，60°≥α≥25°；
From q=θ, the slotting half-angleIf the calculation is carried out to obtain that the slotting half angle alpha is not within the range of 60 degrees or more and 25 degrees or more, alpha=60 degrees is taken;
step 2, obtaining proper grooving depth t according to the relation between grooving depth t and diffusion angle theta and flow q:
the grooving depth t of the V-shaped groove is increased, the spraying angle is gradually increased, and the flow is gradually reduced;
obtaining proper slotting depth according to the relation between slotting depth, diffusion angle and flow:
relationship between diffusion angle and grooving depth:
θ＝a 3 +b 3 ×t (3)
wherein: θ—diffusion angle; t-grooving depth; a, a 3 、b 3 -scaling factor, wherein b 3 ＞0，0≤t≤0.3mm
Flow and grooving depth relationship:
q＝a 4 +b 4 ×t (4)
wherein: q-flow; t-grooving depth; a, a 4 、b 4 -scaling factor, wherein b 4 ＜0，0≤t≤0.3mm
From q=θ: there are two situations: firstly, taking t=0.1-0.2 mm when no intersection point exists within the range of 0-0.3 mm; secondly, intersecting within the range of 0.ltoreq.t.ltoreq.0.3 mm to obtainStep 3, determining jet pressure: energy losses are not taken into account from the V-nozzle outlet to the inner wall of the tube wall:
wherein: f, jet striking force; d, d 1 -equivalent diameter; p-jet pressure
Wherein equivalent diameter d 1 Equal to the diameter of the arc nozzle
When the jet striking force is equal to the threshold pressure, the jet striking force threshold value can be obtained by the formula (5):
jet pressure versus jet velocity:
wherein: v-jet velocity; k-scaling factor
Substituting the jet striking force critical value into the formula (6) to obtain the jet velocity critical value:
flow rate through the nozzle per unit time
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
1. the invention is suitable for circular pipelines with various diameters of tunnel drainage systems, can realize long-distance pipeline flushing and cleaning, improves tunnel maintenance efficiency, and reduces maintenance cost. Meanwhile, by designing the device for cleaning the hemispherical structure, the device can achieve the optimal cleaning effect, a large amount of flushing liquid can be saved, green construction is satisfied, and resource conservation advocates are responded;
2. the washing process is simple, and the drain pipe can be thoroughly washed;
3. the inside of the cleaning hemisphere is provided with the reverse filtering layer, so that sundries and the like in the drain pipe can be prevented from entering the cleaning device, and the use efficiency is improved.
4. The hemispherical V-shaped nozzle structure is cleaned, and through reasonable design of the slotting depth, slotting half angle and flow, the optimal cleaning efficiency is achieved under the lowest energy consumption, and resources are saved.
Drawings
FIG. 1 is a schematic view showing the structure of a cleaning tube in the present embodiment;
FIG. 2 is a schematic cross-sectional view of a cleaning tube in the present embodiment;
FIG. 3 is a schematic view of the structure of the cleaning hemisphere in this embodiment;
FIG. 4 is a graph showing the relationship between the diffusion angle θ and the slot half angle α, and the flow q;
FIG. 5 is a graph showing the relationship between the grooving depth t and the flow rate q, and the diffusion angle θ;
FIG. 6 is a schematic diagram of a pavement line arrangement within a tunnel;
FIG. 7 is a vertical drive direction scan image (center drain reflection image in black line);
FIG. 8 is a road centerline scan image (center drain reflection image in black line frame, center manhole reflection image in white line frame);
fig. 9 is a check workflow diagram.
In the figure, 1, a drain pipe; 2. a liquid injection pipe; 21. a telescopic tube; 22. cleaning the hemisphere; 23. a reverse filtration layer.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings:
the invention discloses a cleaning device for a tunnel drain pipe, which comprises a cleaning pipe as shown in figures 1, 2 and 3, wherein the cleaning pipe comprises a liquid injection pipe, the peripheral side of the liquid injection pipe is communicated with a telescopic pipe, and one end of the telescopic pipe, which is far away from the liquid injection pipe, is connected with a cleaning hemisphere through threads.
The liquid injection pipe is a flexible pipe, is bendable and corrosion-resistant, has a pipe diameter smaller than that of a tunnel drainage pipeline, has a section with a size meeting corresponding requirements, injects pressurized liquid into the liquid injection pipe through pressure equipment, and is formed by splicing pipe sections with different lengths (0.5 m,1.0m,2.0m and 3.0 m), wherein a plurality of telescopic pipes and cleaning hemispheres are arranged at equal intervals on each pipe section except for the 0.5m long pipe section.
The telescopic tube has a structure which refers to the metal antenna of the old television set, and the description is omitted here. The function is that the pressurized liquid in the liquid injection pipe is conveyed to the cleaning hemisphere, and the function is that the liquid injection pipe can freely stretch out and draw back to adapt to drain pipes with different pipe diameters. The number of telescopic tubes can be 3 or 4 or other according to the actual situation of the same cross section. The telescopic way is manual adjustment. Because of the equidistant arrangement, not all cleaning hemispheres are required, and according to practical situations, the unused positions are plugged by the sleeves.
The cleaning hemisphere comprises a hemisphere section and a cylindrical section, the hemisphere section is provided with a nozzle, liquid is conveniently sprayed out from the cleaning hemisphere, a V-shaped groove is formed in the cleaning hemisphere, a reverse filtering layer is arranged in the cleaning hemisphere, and sundries in a drain pipe are prevented from entering and blocking. The cleaning hemisphere is detachable (in threaded connection with the telescopic tube), different cleaning hemispheres are selected according to the required nozzle slotting type, the cleaning hemispheres are in external threaded connection with the first section (the cleaning hemispheres are external threads, the telescopic tube connected with the cleaning hemispheres is internal threads, and the sealing effect is guaranteed). The hemispherical section is also provided with a nozzle cover, and the cleaning hemisphere which does not need to be used can be sealed by the nozzle cover, so that water is saved.
The invention also provides a design method for cleaning the hemisphere, as shown in figures 3, 4 and 5, comprising the following steps:
step 1, defining the half angle of a V-shaped groove as a slotting half angle alpha, slotting depth t, diffusion angle theta (included angle of tangent line of the outer contour of jet water), radius r of a hemispherical section, diameter d of a cylindrical section, length L of an outlet cylindrical section and flow q of liquid.
Wherein, as the slotting half angle alpha of the V-shaped slot is increased, the thickness of the jet water is increased, so that the surface tension of the jet water is increased, the jet water is not easy to diffuse, and finally the diffusion angle theta is reduced, and the cleaning range is reduced; and when the half angle of the V-shaped groove is increased, the sectional area of the outlet is increased, so that the flow is increased.
The relation between the slotting half angle and the diffusion angle and the flow rate are utilized to obtain the optimal slotting angle:
diffusion angle vs. slotted half angle:
θ＝a 1 +b 1 ×α (1)
wherein: θ—diffusion angle; alpha-slotting half angle; a, a 1 、b 1 -scaling factor, wherein b 1 ＜0，60°≥α≥25°；
Flow and slotted half angle relationship:
q＝a 2 +b 2 ×α (2)
wherein: q-flow; alpha-slotting half angle; a, a 2 、b 2 -scaling factor, wherein b 2 ＞0，60°≥α≥25°；
The formula (1) =formula (2) can obtain a slotting half angleIf the calculated grooving half angle α is not within the above range, α=60° is taken.
Examples: the relationship data of the half angle of the V-shaped groove slotting, the diffusion angle and the flow in the following table can be calculated through experiments as follows:
the relationship between the diffusion angle theta and the slotting half angle alpha and the flow q is shown in figure 4.
By linear fitting:
diffusion angle θ and slot half angle α: θ= -0.78457 α+66.07179;
flow relationship q with slotting half angle α: q= 0.00336 α+0.02107;
from θ=q, it can be found that the grooving half angle α= 83.83 ° is not in the range of 25 to 60 °, and α=60°.
Step 2, obtaining proper slotting depth according to the relation between slotting depth and diffusion angle and flow:
the depth of the V-shaped groove is increased, the spraying angle is gradually increased, and the flow is gradually reduced. And obtaining proper slotting depth according to the relation between slotting depth and diffusion angle and flow.
Relationship between diffusion angle and grooving depth:
θ＝a 3 +b 3 ×t (3)
wherein: θ—diffusion angle; t-grooving depth; a, a 3 、b 3 -scaling factor, wherein b 3 ＞0，0≤t≤0.3mm；
Flow and grooving depth relationship:
q＝a 4 +b 4 ×t (4)
wherein: q-flow; t-grooving depth; a, a 4 、b 4 -scaling factor, wherein b 4 ＜0，0≤t≤0.3mm；
Formula (3) =formula (4) can be obtained: there are two situations: firstly, taking t=0.1-0.2 mm when no intersection point exists within the range of 0-0.3 mm; secondly, intersecting within the range of 0.ltoreq.t.ltoreq.0.3 mm to obtainExamples: the relation data of the groove depth and the diffusion angle and the flow of the V-shaped groove in the following table can be calculated through experiments:
the relation diagram of the grooving depth t and the flow q and the diffusion angle theta is shown in figure 5.
By linear fitting:
diffusion angle θ and grooving depth t: θ=10.53t+19.588
Flow relationship q with grooving depth t: q= -0.175t+0.2195
From θ=q, the grooving depth t= -1.8 can be obtained, and if the grooving depth t= 0.1-0.2 mm is not satisfied
The calculation shows that the slotting half angle of the V-shaped groove can be obtained by the relation between the slotting half angle of the V-shaped groove and the diffusion angle and the flow through linear fitting and equality principles. And secondly, on the basis of the V-shaped groove slotting half angle determined in the first step, keeping the slotting half angle unchanged, obtaining the relation between the slotting depth of the V-shaped groove and the diffusion angle and flow, and obtaining the slotting depth of the V-shaped groove through linear fitting and equality principles. The optimal half angle and depth of the V-shaped groove can be obtained through the two steps.
In summary, the grooving angle and depth were obtained, and the grooving size and shape were confirmed, and the cylindrical segment size was determined at L/d=2.5 to 3.5 (in this ratio range, jet pressure performance was better).
And 3, when jet pressure is selected, cleaning can be completed when the working pressure is greater than the threshold pressure of dirt. Proper pressure increase can ensure the cleaning effect, but excessive pressure can cause power consumption and waste of water resources, and the cost is increased. Too high a pressure may also cause the water jet to atomize and reduce the striking force, and the reverse flow disturbance caused by the water jet splashing around after striking the wall is also a cause of the reduced striking force, so that it is necessary to determine the minimum jet striking force, i.e., F Jet flow ＝F Threshold value At the moment, the jet pressure and the jet speed reach the critical values, and when the actual jet pressure or the jet speed is equal to the critical values, the dirt, sundries, sediment and the like are cleaned.
Energy losses are not taken into account from the V-nozzle outlet to the inner wall of the tube wall:
wherein: f, jet striking force; d, d 1 -equivalent diameter; p-jet pressure, where equivalent diameter d 1 Equal to the diameter of the arc-shaped nozzle;
when the jet striking force is equal to the threshold pressure, the jet striking force threshold value can be obtained by the formula (5):
jet pressure versus jet velocity:
wherein: v-jet velocity; k-a scaling factor;
substituting the jet striking force critical value into the formula (6) to obtain the jet velocity critical value:
flow rate through the nozzle per unit time
The jet striking force critical value and the jet velocity critical value obtained through the calculation are used for controlling the flow and the pressure of the flushing solution, so that the aim of saving resources is achieved.
The invention also provides a cleaning method of the tunnel drain pipe, as shown in fig. 6, 7 and 8, comprising the following steps:
s1, determining the position of the drain pipe and performing drilling inspection so as to determine the inner diameter of each section of pipeline in the drain pipe and the blocking condition in the pipeline.
S11, confirming the position of a drain pipe: and determining the initial pile number of the tunnel opening section according to the tunnel design data or the maintenance pile number in the tunnel, measuring from the tunnel opening by adopting tools such as a tape, and marking the pile number on the inner side wall of the tunnel. Record photographing with geological radar, endoscope, camera, etc.
Taking the central drain pipe as an example, a geological radar antenna is pulled to form a measuring line along the vertical driving direction of a half lane in a hole, and the position and the approximate burial depth of the central drain pipe are judged through the waveform characteristics of scanning images of the geological radar.
After the position of the central drain pipe is determined, a parallel measuring line is pulled longitudinally along the road above the central drain pipe, and the trend of the central drain pipe and the position of the central inspection well are determined according to the characteristics of radar image waveforms.
S12, drilling inspection: and (5) drilling holes on the road surface according to the drilling point positions by adopting a 50mm water drill puncher. The holes of the inspection holes are usually arranged at intervals of 100m, and the positions of the holes at the drilling points are marked by paint spraying; the important check section with abnormal conditions such as blockage locally can be properly encrypted; in principle, inspection openings should be arranged in the central drain inspection shaft, the sand basin, etc. The situation of hole collapse can occur when the drill-in hollow layer and the gravel layer, the stability of the hole wall is difficult to keep, the gravel layer can be locally stabilized by adopting the modes of filling the quick plugging agent and the like, and then drilling is continued.
The condition in the inspection hole and the central drain pipe is inspected by using an industrial endoscope or a pipeline endoscope, an inspection video starts from the moment that a lens enters the inspection hole, the inspection video always enters the hole bottom, the condition in the central drain pipe at the hole position is determined by using the steering function of the lens, the photographing is not interrupted in the middle, and the photograph of the serious part of the pipeline blockage can be recorded. And finally, repairing the inspection opening by using repair mortar. The inspection workflow is shown in fig. 9.
S13, determining the clogging condition of the drain pipe at different length positions according to the checking condition, predicting the actual size of the inner diameter of the drain pipe at the clogging position, splicing pipe joints, and adjusting the length of the telescopic pipe at different positions according to the actual inner diameter of the drain pipe so as to meet the cleaning purpose (the distance between a cleaning hemisphere and the inner wall reaches the optimal distance of 15-20 cm). And slowly placing the spliced and adjusted cleaning pipe to a designated position along the inner wall of the drain pipe to be cleaned.
S3, injecting the pressurized liquid through the liquid injection pipe; pressurized liquid flows into the cleaning hemisphere through the telescopic tube, is sprayed out through the V-shaped groove nozzle, is sprayed into the drain pipe, and is partially attached to the inner wall;
s4, the telescopic pipe and the cleaning hemisphere are driven to synchronously rotate by rotating the liquid injection pipe, so that the drainage pipeline can be cleaned in all directions, the rotation is increased, and the cleaning effect is better;
and S5, after the cleaning is finished, the cleaning device is retracted.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention. The embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. A design method for cleaning hemispheres is characterized by comprising the following steps: the method comprises the following steps:
step 1, defining the half angle of a V-shaped groove as a slotting half angle alpha, slotting depth as t, and the included angle between outer contour tangents at two sides of jet water emitted by a cleaning hemisphere as a diffusion angle theta, wherein the radius of a hemispherical section is r, the diameter of a cylindrical section is d, the length of the cylindrical section is L, and the flow rate of pressurized liquid is q;
wherein, as the slotting half angle alpha of the V-shaped slot is increased, the thickness of the jet water is increased, so that the surface tension of the jet water is increased, the jet water is not easy to diffuse, and finally the diffusion angle theta is reduced, and the cleaning range is reduced; and is also provided with
When the slotting half angle of the V-shaped groove is increased, the sectional area of the outlet is increased, so that the flow is increased;
the optimal slotting angle is obtained according to the relation between slotting half angle and diffusion angle and flow:
diffusion angle vs. slotted half angle:
θ＝a 1 +b 1 ×α (1)
wherein: θ—diffusion angle; alpha-slotting half angle; a, a 1 、b 1 -scaling factor, wherein b 1 ＜0，60°≥α≥25°；
Flow and slotted half angle relationship:
q＝a 2 +b 2 ×α (2)
wherein: q-flow; alpha-slotting half angle; a, a 2 、b 2 -scaling factor, wherein b 2 More than 0, 60 degrees or more than or equal to alpha is more than or equal to 25 degrees; from q=θ, the slotting half-angleIf the calculation is carried out to obtain that the slotting half angle alpha is not within the range of 60 degrees or more and 25 degrees or more, alpha=60 degrees is taken;
step 2, obtaining the slotting depth t according to the relation between the slotting depth t and the diffusion angle theta and the flow q:
the grooving depth t of the V-shaped groove is increased, the spraying angle is gradually increased, and the flow is gradually reduced;
the slotting depth is obtained according to the relation between slotting depth, diffusion angle and flow:
relationship between diffusion angle and grooving depth:
θ＝a 3 +b 3 ×t (3)
wherein: θ—diffusion angle; t-grooving depth; a, a 3 、b 3 -scaling factor, wherein b 3 Relation of flow rate more than 0, t more than or equal to 0.3mm and grooving depth:
q＝a 4 +b 4 ×t (4)
wherein: q-flow; t-grooving depth; a, a 4 、b 4 -scaling factor, wherein b 4 Less than 0, 0.ltoreq.t.ltoreq.0.3 mm is obtainable from q=θ: there are two situations: firstly, taking t=0.1-0.2 mm when no intersection point exists within the range of 0-0.3 mm; secondly, intersecting within the range of 0.ltoreq.t.ltoreq.0.3 mm to obtainStep 3, determining jet pressure: energy losses are not taken into account from the V-nozzle outlet to the inner wall of the tube wall:
wherein: f, jet striking force; d, d 1 -equivalent diameter; p-jet pressure
Wherein equivalent diameter d 1 Equal to the diameter of the arc nozzle
When the jet striking force is equal to the threshold pressure, the jet striking force threshold value can be obtained by the formula (5):jet pressure versus jet velocity:
wherein: v-jet velocity; k-scaling factor
Substituting the jet striking force critical value into the formula (6) to obtain the jet velocity critical value:flow through the nozzle per unit time +.>
2. The utility model provides a tunnel drain belt cleaning device which characterized in that: the cleaning device comprises a cleaning pipe, wherein the cleaning pipe comprises a liquid injection pipe, a telescopic pipe is arranged on the periphery side of the liquid injection pipe in a communicated mode, and one end, far away from the liquid injection pipe, of the telescopic pipe is in threaded connection with a cleaning hemisphere manufactured by the design method of claim 1.
3. A tunnel drain cleaning device according to claim 2, wherein: the cleaning hemisphere comprises a shell-shaped cylindrical section and a hemisphere section, a V-shaped groove is formed in the end portion of the hemisphere section, a reverse filtering layer is arranged in the V-shaped groove, and a nozzle cover is further arranged on the hemisphere section.
4. A tunnel drain cleaning device according to claim 2, wherein: the liquid injection pipe is formed by splicing a plurality of pipe joints.
5. A tunnel drain cleaning method based on the tunnel drain cleaning device according to any one of claims 2 to 4, characterized in that: the method comprises the following steps:
s1, determining the position of a drain pipe and performing drilling inspection so as to determine the inner diameter of each section of pipeline in the drain pipe and the blocking condition of the interior of the pipeline;
s2, splicing a plurality of pipe joints into a cleaning pipe, and adjusting the length of the telescopic pipe according to the inner diameter of each section of pipeline in the drain pipe so that the distance between the cleaning hemisphere and the inner wall of the drain pipe is 15-20 cm; then slowly placing the spliced liquid injection pipe to a designated position along the inner wall of the drain pipe to be cleaned;
s3, injecting pressurized liquid through a cleaning pipe; pressurized liquid flows into the cleaning hemisphere through the telescopic tube, is sprayed out through the V-shaped groove nozzle, is sprayed into the drain pipe, and is partially attached to the inner wall;
s4, driving the telescopic pipe and the cleaning hemisphere to synchronously rotate by rotating the liquid injection pipe, and adding the rotation, so that the drainage pipeline can be cleaned in all directions;
and S5, after the cleaning is finished, the cleaning device is retracted.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2927737B1 (en) * | 1979-07-10 | 1981-01-08 | Lechler Gmbh & Co Kg | Flat jet nozzle for spraying liquids |
| JP2000234720A (en) * | 1999-02-16 | 2000-08-29 | Babcock Hitachi Kk | Soot blower |
| GB0217807D0 (en) * | 2002-08-01 | 2002-09-11 | Axsia Serck Baker Ltd | A gas eductor induced gas floation separator |
| CN207002785U (en) * | 2017-02-28 | 2018-02-13 | 无锡东雄重型电炉有限公司 | Adjust beam angle fluidic oxygen gun |
| CN107881972A (en) * | 2017-10-20 | 2018-04-06 | 长沙中联重科环境产业有限公司 | Blow gun, air-heater and Street surface cleaning car |
| CN209849111U (en) * | 2019-03-14 | 2019-12-27 | 洛阳帝博石化装备有限公司 | Angle-adjustable fan-shaped nozzle |
| CN212285172U (en) * | 2020-02-27 | 2021-01-05 | 浙江理工大学 | Pipeline cleaning device based on active induction cavitation effect |
| CN213495423U (en) * | 2020-07-13 | 2021-06-22 | 云南省交通规划设计研究院有限公司 | Tunnel circumferential drainage blind pipe with slope |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050252539A1 (en) * | 2004-05-17 | 2005-11-17 | Asmo Co., Ltd. | Vehicular washer nozzle |
-
2022
- 2022-07-25 CN CN202210877679.7A patent/CN115488114B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2927737B1 (en) * | 1979-07-10 | 1981-01-08 | Lechler Gmbh & Co Kg | Flat jet nozzle for spraying liquids |
| JP2000234720A (en) * | 1999-02-16 | 2000-08-29 | Babcock Hitachi Kk | Soot blower |
| GB0217807D0 (en) * | 2002-08-01 | 2002-09-11 | Axsia Serck Baker Ltd | A gas eductor induced gas floation separator |
| CN207002785U (en) * | 2017-02-28 | 2018-02-13 | 无锡东雄重型电炉有限公司 | Adjust beam angle fluidic oxygen gun |
| CN107881972A (en) * | 2017-10-20 | 2018-04-06 | 长沙中联重科环境产业有限公司 | Blow gun, air-heater and Street surface cleaning car |
| CN209849111U (en) * | 2019-03-14 | 2019-12-27 | 洛阳帝博石化装备有限公司 | Angle-adjustable fan-shaped nozzle |
| CN212285172U (en) * | 2020-02-27 | 2021-01-05 | 浙江理工大学 | Pipeline cleaning device based on active induction cavitation effect |
| CN213495423U (en) * | 2020-07-13 | 2021-06-22 | 云南省交通规划设计研究院有限公司 | Tunnel circumferential drainage blind pipe with slope |
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| CN115488114A (en) | 2022-12-20 |
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