CN104075076A - Repair process of heat distribution pipeline - Google Patents
Repair process of heat distribution pipeline Download PDFInfo
- Publication number
- CN104075076A CN104075076A CN201410255223.2A CN201410255223A CN104075076A CN 104075076 A CN104075076 A CN 104075076A CN 201410255223 A CN201410255223 A CN 201410255223A CN 104075076 A CN104075076 A CN 104075076A
- Authority
- CN
- China
- Prior art keywords
- heat distribution
- distribution pipeline
- adiabatic
- injected hole
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/165—Repairing insulated pipes
Abstract
The invention provides a repair process of a heat distribution pipeline. The process is characterized in that adiabatic size is directly poured between an inner conveying pipe and an outer housing of the heat distribution pipeline so as to form a new adiabatic layer, wherein the adiabatic size includes CGM (High-strength non-shrink grouting material) and silica aerogel. According to the process, the CGM and the silica aerogel are combined to form the adiabatic that is small in heat conductivity coefficient and high in flowing performance, the silica aerogel is added to the CGM, and thereby, the mixed adiabatic size can be naturally cured without heating; the adiabatic size is outstanding in flowability, thus the grouting material can be directly injected between the inner conveying pipe and the outer housing, and the operation is simple; in addition, the CGM and the silica aerogel are mixed, and the formed adiabatic material is high in intensity and small in shrinkage, so that the adiabatic material is suitably used for maintaining the overall performance of the heat distribution piping.
Description
Technical field
The present invention relates to a kind of heat distribution pipeline renovation technique, belong to central heat supply, cooling technical field.
Background technique
In the medium transport such as central heat supply, central cooling field, the normal heat distribution pipeline that adopts carrys out the medium such as delivering vapor, hot water, heat distribution pipeline generally comprises interior delivery pipe, frame and the heat insulation layer between frame and interior delivery pipe, interior delivery pipe and frame can be polymer-based material and metal, heat insulation layer can be foam-thermal insulation, polyurethane foam.Because heat distribution pipeline has good heat-insulating property, can reduce the heat loss of medium in transmitting procedure.But, for directly buried type heat distribution pipeline, in pipeline During Process of Long-term Operation, because medium temperature causes the STRESS VARIATION of interior delivery pipe, the displacement meeting that interior delivery pipe produces affects the integrity of heat insulation layer, and the medium of high temperature can allow heat insulation layer aging gradually, if run into because outer protecting shell body damages or other is former thereby while causing water in external environment to enter into heat insulation layer, the high-temperature water that above-mentioned water forms after by the dielectric heating in interior delivery pipe can accelerate the aging of heat insulation layer, heat insulation layer volume after aging can reduce, thereby cause occurring in heat insulation layer cavity, therefore greatly reduce the heat-insulating property of heat distribution pipeline, in addition, high-temperature water flows into after inspection shaft in cavity, above well lid, there will be the phenomenon of " emitting hot gas ", for the more shallow pipeline of buried depth, hot gas is directly emerged from ground, affect environment, even cause security incident, so need to repair in time the heat distribution pipeline damaging.
At present, be excavation ground for the conventional method of directly buried type heating pipeline reparation, the pipeline entirety of original damage is taken out and used new heat distribution pipeline to replace, maybe the damage pipeline taking out is removed after heat insulation layer, again on interior delivery pipe, configure heat insulation layer.But the restorative procedure on this excavation ground is subject to the restriction of building on ground and municipal administration aspect, and construction period is relatively long, brings many constant to construction.
For this reason, Chinese patent literature (CN101619798A) discloses not trenchless rehabilitation technique of a kind of directly buried type heat distribution pipeline heat insulation layer, this renovation technique does not need excavated pavement, be located at two adjacent inspection shaft places on ground at former pipeline, holed in external protective steel tube two ends, first with high pressure draught, the discarded thermoinsulation material of damaged efflorescence is discharged, recycling injection device injects adiabatic slurry between external protective steel tube and working steel tube, after enriching, utilize former pipeline heating system warm-up to solidify, form new heat insulation layer.
But, although this kind of renovation technique do not need excavated pavement, but, before injecting slurry, but need by high pressure draught, the thermoinsulation material of damaged efflorescence to be discharged,, can not be directly for the heat insulation layer injecting slurry of damaged efflorescence, cause process step loaded down with trivial details, trace it to its cause and be, the adiabatic slurry using in this renovation technique is made up of sepiolite, perlite, expansive soil, dustless asbestos, quickly penetrating agent, aluminosilicate fiber cotton, carboxymethyl cellulose, silica gel, quickly penetrating agent, organosilicon material and the water of certain proportioning.But the asbestos in slurry can cause the disease such as asbestosis, mesothelioma of pleura, this dangerous substances of use has been selected to completely forbid by many countries.The mobility of this kind of adiabatic slurry is poor, if do not discharge the thermoinsulation material of efflorescence, this slurry can not flow uniformly, thus the heat-insulating property of the final heat insulation layer forming of impact.In addition, this grouting material is grouped into by ten kinds of above one-tenth, and for reaching application target, the proportioning of each composition need to be strict controlled in required scope, composition proportion complexity.And because the constituent of this grouting material comprises multiple inorganic material and multiple organic material, after it has been solidified, fully combination between inorganic molecule and organic molecule, cause heat insulation layer cracking or its inside that grouting material forms after solidifying thus to occur certain space (or crack), the space (or crack) distributing in heat insulation layer has not only reduced the intensity of heat insulation layer, has more reduced the insulation effect of heat insulation layer; If still there will be the phenomenon of " emitting hot gas " after moisture content infiltrates heat insulation layer space in external environment, thereby accelerate the aging of new heat insulation layer, reduce the working life of heat insulation layer simultaneously; In addition, in the solidification process of above-mentioned thermoinsulation material, need to utilize heat distribution pipe network to the logical steam of working steel tube, slurry is slowly warming up to after 150-160 DEG C, adiabatic 70-80 hour, heat in process, the moisture of adiabatic slip is discharged by the humidity discharging pipe of both-side opening and former pipeline.Its solidification process is loaded down with trivial details, and solidification process needs high temperature auxiliary, and curing time is long, causes energy waste.
Summary of the invention
Therefore, the technical problem to be solved in the present invention be to overcome existing heat distribution pipeline renovation technique complex steps, adiabatic furnish proportioning complexity, poor fluidity and solidify after easily make heat insulation layer form space, reduce insulation effect, affect the heat insulation layer technical problem in working life, thereby providing a kind of fills a prescription simply, operating procedure is simple and can make the good heat distribution pipeline renovation technique of heat insulation layer insulation effect after reparation.
For solving the problems of the technologies described above, the invention provides a kind of heat distribution pipeline renovation technique, comprise that directly, to injecting adiabatic slurry between the interior delivery pipe at heat distribution pipeline and frame to form the step C of new heat insulation layer, described adiabatic slurry comprises CGM grouting material and aerosil.
Further, described adiabatic slurry comprises 50-99 weight portion CGM grouting material and 1-50 weight portion aerosil.
Further, described adiabatic slurry also comprises water, and the addition of described water is the 10-30wt% of the total amount of described CGM grouting material and described aerosil.
Further, described adiabatic slurry comprises 90-99 weight portion CGM grouting material and 1-10 weight portion aerosil.
Further, described aerosil is particle diameter 90-150 object aerosil powder.
Further, described adiabatic slurry injects between interior delivery pipe and frame by being arranged on several injected holes of heat insulation layer end face.
Further, described injected hole comprises the first injected hole, the second injected hole and the 3rd injected hole that are evenly distributed on described heat insulation layer end face, and described the second injected hole and described the 3rd injected hole are positioned at the below of described the first injected hole.
Further, during to described injected hole slip casting, first from being positioned at heat distribution pipeline downside the second injected hole and the 3rd injected hole starts slip casting, finally towards the first injected hole slip casting of the top.
Further, flow rate of grouting is 5-10L/min, and grouting pressure is 2-6Mpa.
Further, before being also included in described step C, by pressure unit, the slurry injection pipe being connected with grouting equipment is pressed into the step B in described injected hole.
Further, before being also included in described step B, be identified for the steps A of the construction immovable point that described pressure unit is installed.
Further, in described steps A, described heat distribution pipeline two ends are all detecting in well, and in excavation vacant lot, the two ends of heat distribution pipeline to be repaired, and at vacant lot top pouring cement work platform, described cement work platform is as construction immovable point.
Further, in described steps A, described heat distribution pipeline two ends are all arranged in detects well, and is provided with fixed support in described inspection shaft, and described fixed support is as construction immovable point.
Further, in described steps A, described heat distribution pipeline two ends are all arranged in detects well, in described detection well, makes supporting frame, and this supporting frame one end is using the metope of described detection well as support, and support frame as described above is as construction immovable point.
Further, in described steps A, described heat distribution pipeline two ends are all arranged in detects well, and steel plate is welded direct on described interior delivery pipe outer wall as immovable point.
Further, the side of described slurry injection pipe is provided with at least one hole for exhaust or water.
Further, the degree of depth that described slurry injection pipe is pressed into injected hole is determined according to on-the-spot drag size.
Further, be also included in the slip casting end, gap between interior delivery pipe and frame before, the step of carrying out shutoff, in the step of described shutoff, adopts CGM grouting material or adiabatic slurry as plugging material.
Further, described slurry injection pipe is floral tube.
Further, after slip casting completes, the self-curing time of this slurry is at least 24 hours.
Technique scheme of the present invention has the following advantages compared to existing technology:
1. a kind of heat distribution pipeline renovation technique provided by the invention, injects adiabatic slurry to form new heat insulation layer between the direct interior delivery pipe to heat distribution pipeline 1 and frame, and described adiabatic slurry comprises CGM grouting material and aerosil.Described CGM grouting material combines with aerosil, form a kind of thermal conductivity low, the thermoinsulation material of good flowing properties, by add aerosil in CGM grouting material, make the mixed adiabatic slurry can spontaneous curing, do not need heating, and solidify the crackle that the rear material forming does not have naked eyes can observe.When inject described adiabatic slurry between interior delivery pipe and frame time, described adiabatic slurry is driven away moisture and the gas in the middle of original heat insulation layer in modes such as filling, infiltration, extruding, and fill its position formation and starch arteries and veins or irregular solidifying body, after described adiabatic slurry sclerosis, form new heat insulation layer, due to directly injecting slurry between interior delivery pipe and frame of renovation technique of the present invention, therefore operating procedure is simple; And due to the mixing of CGM grouting material and aerosil, the thermoinsulation material intensity of formation is high, shrink littlely, be applicable to keep the overall performance of heating pipeline.
2. a kind of heat distribution pipeline renovation technique provided by the invention, described adiabatic slurry comprises 50-99 weight portion CGM grouting material and 1-50 weight portion aerosil, also comprise water, the addition of described water is the 10-30wt% of the total amount of described CGM grouting material and described aerosil, the adiabatic slurry that adopts above-mentioned formula to make, composition proportion mobility simple and described adiabatic slurry is very excellent.
3. a kind of heat distribution pipeline renovation technique provided by the invention, described aerosil is particle diameter 90-150 object aerosil powder, makes not only heat-insulating property excellence of described grout material, its mobility and intensity are also very excellent.
4. a kind of heat distribution pipeline renovation technique provided by the invention, described injected hole comprises three injected holes that are evenly distributed on described heat insulation layer end face, be respectively equipped with injected hole in 12 points, 4 points, 8 directions, during to described injected hole slip casting, first start slip casting from the downside injected hole of described heat distribution pipeline, finally, towards the injected hole slip casting of the top, ensure that the annular cavity between described interior delivery pipe and frame is filled with.
5. a kind of heat distribution pipeline renovation technique provided by the invention, during to described injected hole slip casting, flow rate of grouting is 5-10L/min, grouting pressure is 2-6Mpa, the mobility of injecting cement paste and can prevent the problems such as heat distribution pipeline generation booster while having ensured slip casting.
6. a kind of heat distribution pipeline renovation technique provided by the invention, before slip casting, the two ends shutoff of the delivery pipe that detects well will be positioned at, in the step of described shutoff, in order to prevent that grouting pressure from causing closed material breakage, and slurry is outwards flowed out, cause slurry waste, adopt have soon hard, high-strength, without shrinking, microdilatancy, and nontoxic, harmless, pollution-free to water quality and surrounding environment, from the CGM grouting material of the features such as close property is good, antirust as plugging material.
7. described heat distribution pipeline renovation technique provided by the invention, force bearing point when described immovable point is pressure unit and slip casting, therefore different field conditions is selected different immovable points, particularly, described heat distribution pipeline two ends are not all in detection well, in excavation vacant lot, the two ends of heat distribution pipeline to be repaired, and at vacant lot top pouring cement work platform, described cement work platform is as construction immovable point.Described heat distribution pipeline two ends are all arranged in detects well, and is provided with fixed support in described inspection shaft, and described fixed support is as construction immovable point.Described heat distribution pipeline two ends are all arranged in detects well, and at the aboveground making supporting frame of described detection, for supporting a sidewalls of described detection well, support frame as described above is as construction immovable point.Described heat distribution pipeline two ends be all arranged in detect well, using steel plate direct spot welding to described interior delivery pipe outer wall on as immovable point.
Brief description of the drawings
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Work schematic diagram when Fig. 1 is the non-trenchless rehabilitation construction of heat distribution pipeline of the present invention;
Fig. 2 is the sectional drawing of heat distribution pipeline of the present invention;
In figure, reference character is expressed as: 1-heat distribution pipeline, delivery pipe in 11-, 12-frame, 13-heat insulation layer, 14a-the first injected hole, 14b-the second injected hole, 14c-the 3rd injected hole, the 2-immovable point of constructing, 3-pressure unit, 4-grouting equipment, 5-slurry injection pipe, 6-inspection shaft, 7-grouting material.
Embodiment
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment provides a kind of heat distribution pipeline renovation technique, specifically comprises the steps:
A: be identified for the construction immovable point 2 of setting pressure device 3, described pressure unit can be jack;
B: the slurry injection pipe 5 being connected with grouting equipment 4 is pressed in described injected hole by described pressure unit 3, described slurry injection pipe 5 adopts static(al) to be pressed in described injected hole, described slurry injection pipe 5 adopts floral tube conventional in prior art, if described slurry injection pipe 5 length can adopt not welding or be threaded, described slurry injection pipe 5 is pressed into the degree of depth of injected hole and determines according to on-the-spot drag size;
C: directly inject adiabatic slurry between the interior delivery pipe 11 at heat distribution pipeline 1 and frame 12 by injected hole, flow rate of grouting is 5L/min, grouting pressure is 2Mpa, the mobility of injecting cement paste and can prevent the problems such as heat distribution pipeline generation booster when this kind of flow rate of grouting and grouting pressure can ensure slip casting;
D: adiabatic slurry self-curing forms new heat insulation layer for 24 hours.
In the present embodiment, in order to improve mobility and the adiabaticity of adiabatic slurry, described CGM grouting material combines with aerosil, form a kind of thermal conductivity low, the thermoinsulation material of good flowing properties, by add aerosil in CGM grouting material, makes the mixed adiabatic slurry can spontaneous curing, do not need heating, and solidify the crackle that the rear material forming does not have naked eyes can observe.Described adiabatic slurry comprises the component of following weight portion: CGM grouting material 50g (grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM380), aerosil 50g, and water 10g.Described aerosil is particle diameter 90 object aerosil powder.
The mobility of the adiabatic slurry of above-mentioned formula is very excellent, therefore, do not need by high pressure draught, damaged heat insulation layer to be cleared up, can directly adiabatic slurry be expelled between interior delivery pipe 11 and frame 12, when inject described adiabatic slurry between interior delivery pipe 11 and frame 12 time, described adiabatic slurry is to fill, infiltration, the mode such as compacted is driven away moisture and the gas in the middle of original heat insulation layer, and fill its position formation and starch arteries and veins or irregular solidifying body, after described adiabatic slurry sclerosis, form new heat insulation layer, because the present invention did not need by high pressure draught, the thermoinsulation material of damaged efflorescence to be discharged before injecting slurry, described renovation technique is injecting slurry between interior delivery pipe 11 and frame 12 directly, therefore operating procedure is simple, and due to the mixing of CGM grouting material and aerosil, the thermoinsulation material intensity of formation is high, shrink littlely, be applicable to keep the overall performance of heating pipeline.。
In the present embodiment, in order to ensure the efficiency of slip casting, described injected hole comprises the first injected hole 14a, the second injected hole 14b and the 3rd injected hole 14c that are evenly distributed on the end face of heat distribution pipeline, and three injected holes are distributed on the end face of heat distribution pipeline along 12 points, 4 points, 8 directions respectively.During to described injected hole slip casting, first start slip casting from the second injected hole 14b and the 3rd injected hole 14c of the downside that is positioned at described heat distribution pipeline 1, finally, towards the first injected hole 14a slip casting of the top, this grouting sequence can ensure that the annular cavity between described interior delivery pipe 11 and frame 12 is filled with.
In the present embodiment, the mobility of adiabatic slurry during for further guarantee slip casting, the side of described slurry injection pipe 5 is provided with the air outlet hole for exhaust.
In the present embodiment, in the concrete steps of described heat distribution pipeline renovation technique, be also included in the slip casting end, gap between interior delivery pipe 11 and frame 12 before, carry out the step of shutoff, in the step of described shutoff, adopt CGM grouting material 7 as plugging material.The thickness of encapsulation of interior delivery pipe 11 borders in described detection well 6 is in 300mm left and right, from cost consideration, thickness of encapsulation should be got over Bao Yuehao, but in order to prevent that grouting pressure from causing closed material breakage, and slurry is outwards flowed out, cause slurry waste, closed material adopts CGM grouting material 7 of the prior art, it has, and hard, high-strength, nothing is soon shunk, microdilatancy, and nontoxic, harmless, pollution-free to water quality and surrounding environment, from features such as close property are good, antirust, be therefore applicable to as plugging material of the present invention.
As one distortion, in shutoff step, can also adopt adiabatic slurry as plugging material.
As one distortion, in step D, can also be 25 hours curing time, 26 hours etc., need at least meet 24 hours curing time.
It should be noted that, in the repair process of heat distribution pipeline, the construction immovable point 2 that is identified for setting pressure device 3 is very crucial, in the present embodiment, described heat distribution pipeline 1 two ends are not all in detection well 6, in excavation vacant lot, the two ends of heat distribution pipeline 1 to be repaired, and at vacant lot top pouring cement work platform, described cement work platform is as construction immovable point 2, as shown in Figure 1, described pressure unit 3 is arranged on cement work platform, and cement work platform is that pressure unit 3 provides support power, is convenient to pressure unit 3 slurry injection pipe 5 is pressed in injected hole.
Embodiment 2
The present embodiment provides a kind of renovation technique of heat distribution pipeline, and it is the distortion on embodiment 1 basis, and in the present embodiment, the formula of described adiabatic slurry, grouting pressure, flow rate of grouting are different from embodiment 1.Particularly, in the present embodiment, described adiabatic slurry comprises: CGM grouting material 90g (grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM380), aerosil 10g, and water 20g.Described aerosil is particle diameter 100 object aerosil powder, the adiabatic slurry of being made by above-mentioned formula, by injected hole, during directly to slip casting between the interior delivery pipe 11 of heat distribution pipeline 1 and frame 12, flow rate of grouting is 8L/min, and grouting pressure is 4Mpa.
Embodiment 3
The present embodiment provides a kind of renovation technique of heat distribution pipeline, and it is the distortion on embodiment 1 and embodiment 2 bases, and in the present embodiment, the formula of described adiabatic slurry, grouting pressure, flow rate of grouting are all different from above-described embodiment.Particularly, in the present embodiment, described adiabatic slurry comprises: CGM grouting material 99g (grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM380), aerosil 1g and water 30g, described aerosil is particle diameter 150 object aerosil powder, the adiabatic slurry of being made by above-mentioned formula, by injected hole, during directly to slip casting between the interior delivery pipe 11 of heat distribution pipeline 1 and frame 12, flow rate of grouting is 10L/min, and grouting pressure is 6Mpa.
Embodiment 4
The present embodiment provides a kind of renovation technique of heat distribution pipeline, and it is the distortion on embodiment 1 and embodiment 2 bases, and in the present embodiment, the formula of described adiabatic slurry, grouting pressure, flow rate of grouting are all different from above-described embodiment.Particularly, in the present embodiment, described adiabatic slurry comprises: CGM grouting material 95g (grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM380), aerosil 5g and water 30g, described aerosil is particle diameter 150 object aerosil powder, the adiabatic slurry of being made by above-mentioned formula, by injected hole, during directly to slip casting between the interior delivery pipe 11 of heat distribution pipeline 1 and frame 12, flow rate of grouting is 10L/min, and grouting pressure is 5Mpa.
Embodiment 5
The present embodiment provides a kind of renovation technique of heat distribution pipeline, and it is the distortion on embodiment 1 basis, and in the present embodiment, the construction immovable point 2 that is identified for setting pressure device 3 is all different from described embodiment 1, embodiment 2 and embodiment 3.Particularly, in the present embodiment, described heat distribution pipeline 1 two ends are all arranged in detects well 6, and is provided with fixed support in described inspection shaft 6, and described fixed support is as construction immovable point.
Embodiment 6
The present embodiment provides a kind of renovation technique of heat distribution pipeline, it is the distortion on embodiment 1 or 2 or 3 or 4 bases, in the present embodiment, be identified for the construction immovable point 2 of setting pressure device 3 all different from embodiment 1, embodiment 2, embodiment 3 and embodiment 4.Particularly, in the present embodiment, described heat distribution pipeline 1 two ends are all arranged in detects well 6, makes supporting frame for supporting a sidewalls of described detection well 6 on described detection well 6, and support frame as described above is as construction immovable point.
Embodiment 7
The present embodiment provides a kind of renovation technique of heat distribution pipeline, it is the distortion on embodiment 1 or 2 or 3 or 4 or 6 bases, in the present embodiment, be identified for the construction immovable point 2 of setting pressure device 3 all different from embodiment 1, embodiment 2, embodiment 3, embodiment 4 and embodiment 5.Particularly, in the present embodiment, described heat distribution pipeline 1 two ends be all arranged in detect well 6, using steel plate direct spot welding to described interior delivery pipe outer wall on as immovable point.
Pressure unit 3 in above-described embodiment 1-7 can be jack, or other pressure unit of playing a supporting role.
It should be noted that, for the CGM grouting material in above-mentioned enforcement 1-7, the grouting material that the model that can also adopt Guangzhou Tuo Da building materials Co., Ltd is CGM-2, or the model of the Beijing Newayxun Construction Project Consulting Technology Co., Ltd grouting material that is CGM270, the grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM290, or the model of the Beijing Newayxun Construction Project Consulting Technology Co., Ltd grouting material that is CGM340, or the model of the Guangzhou Tuo Da building materials Co., Ltd grouting material that is CGM-3.
Comparative example 1
The adiabatic slurry of this comparative example is injected according to the step described in embodiment 1, self-curing 24 hours at normal temperatures, obtain new heat insulation layer D1, wherein, in this comparative example, the component of adiabatic slurry is: 100gCGM grouting material (grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM380) stirs the mixture with 55g water, and wherein the particle diameter of aerosil powder is 100 orders.
Comparative example 2
The adiabatic slurry of this comparative example is injected according to the step described in embodiment 1, self-curing 20 hours at normal temperatures, obtain new heat insulation layer D2, wherein, in this comparative example, the component of adiabatic slurry is: 150gCGM grouting material (grouting material that the model of Shandong Tuo Da building materials Co., Ltd is CGM380) stirs the mixture with 100g water, and described aerosil is particle diameter 80 orders.
Evaluation Example
According to GB/T10295-2008, use thermal conductivity instrument (east, the Five continents, Beijing development in science and technology Co., Ltd, EKO-074-200) to measure the thermal conductivity λ 50 of sample in above-described embodiment and comparative example, its determination data is as shown in table 1.
Table 1 product heat-conducting system determination data
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And the apparent variation of being extended out thus or variation are still among the protection domain in the invention.
Claims (18)
1. a heat distribution pipeline renovation technique, it is characterized in that: comprise directly to being positioned between the delivery pipe (11) of heat distribution pipeline (1) and frame (12) and inject adiabatic slurry to form the step C of new heat insulation layer, described adiabatic slurry comprises CGM grouting material and aerosil.
2. heat distribution pipeline renovation technique according to claim 1, is characterized in that: described adiabatic slurry comprises 50-99 weight portion CGM grouting material and 1-50 weight portion aerosil.
3. heat distribution pipeline renovation technique according to claim 1 and 2, is characterized in that: described adiabatic slurry also comprises water, and the addition of described water is the 10-30wt% of the total amount of described CGM grouting material and described aerosil.
4. according to the heat distribution pipeline renovation technique described in any one in claim 1-3, it is characterized in that: described aerosil is particle diameter 90-150 object aerosil powder.
5. according to the heat distribution pipeline renovation technique described in any one in claim 1-3, it is characterized in that: described adiabatic slurry injects between interior delivery pipe (11) and frame (12) by being arranged on several injected holes of heat insulation layer (13) end face.
6. heat distribution pipeline renovation technique according to claim 5, it is characterized in that: described injected hole comprises the first injected hole (14a), the second injected hole (14b) and the 3rd injected hole (14c) that are evenly distributed on described heat insulation layer (12) end face, described the second injected hole (14b) and described the 3rd injected hole (14c) are positioned at the below of described the first injected hole (14a).
7. the renovation technique of heat distribution pipeline according to claim 6, it is characterized in that: during to described injected hole slip casting, first start slip casting from being positioned at heat distribution pipeline (1) downside the second injected hole (14b) and the 3rd injected hole (14c), last the first injected hole (14a) slip casting towards the top.
8. heat distribution pipeline renovation technique according to claim 7, is characterized in that: flow rate of grouting is 5-10L/min, and grouting pressure is 2-6Mpa.
9. heat distribution pipeline renovation technique according to claim 1, it is characterized in that: before being also included in described step C, by pressure unit (3), the slurry injection pipe (5) being connected with grouting equipment (4) is pressed into the step B in described injected hole.
10. heat distribution pipeline renovation technique according to claim 9, is characterized in that: before being also included in described step B, be identified for the steps A of the construction immovable point (2) that described pressure unit (3) is installed.
11. heat distribution pipeline renovation techniques according to claim 10, it is characterized in that: in described steps A, described heat distribution pipeline (1) two ends are not all in detection well (6), in the excavation vacant lot, two ends of heat distribution pipeline to be repaired (1), and at vacant lot top pouring cement work platform, described cement work platform is as construction immovable point.
12. heat distribution pipeline renovation techniques according to claim 10, it is characterized in that: in described steps A, described heat distribution pipeline (1) two ends are all arranged in detects well (6), and described inspection shaft is provided with fixed support in (6), described fixed support is as construction immovable point.
13. heat distribution pipeline renovation techniques according to claim 10, it is characterized in that: in described steps A, described heat distribution pipeline (1) two ends are all arranged in detects well (6), in described detection well (6), make supporting frame, this supporting frame one end is using the metope of described detection well (6) as support, and support frame as described above is as construction immovable point.
14. heat distribution pipeline renovation techniques according to claim 10, it is characterized in that: in described steps A, described heat distribution pipeline (1) two ends are all arranged in detects well (6), and steel plate is welded direct on described interior delivery pipe (11) outer wall as immovable point.
15. according to the heat distribution pipeline renovation technique described in any one in claim 9-14, it is characterized in that: the side of described slurry injection pipe (5) is provided with at least one hole for exhaust or water.
16. according to the heat distribution pipeline renovation technique described in any one in claim 1-3, it is characterized in that: be also included in the slip casting end, gap between interior delivery pipe (11) and frame (12) before, carry out the step of shutoff, in the step of described shutoff, adopt CGM grouting material (7) or adiabatic slurry as plugging material.
17. according to the heat distribution pipeline renovation technique described in any one in claim 9-16, it is characterized in that: described slurry injection pipe (5) is floral tube.
18. according to the heat distribution pipeline renovation technique described in any one in claim 1-17, it is characterized in that: after slip casting completes, the self-curing time of this slurry is at least 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255223.2A CN104075076A (en) | 2014-06-10 | 2014-06-10 | Repair process of heat distribution pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255223.2A CN104075076A (en) | 2014-06-10 | 2014-06-10 | Repair process of heat distribution pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104075076A true CN104075076A (en) | 2014-10-01 |
Family
ID=51596553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410255223.2A Pending CN104075076A (en) | 2014-06-10 | 2014-06-10 | Repair process of heat distribution pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104075076A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN108692129A (en) * | 2017-04-12 | 2018-10-23 | 管丽环境技术(上海)有限公司 | A kind of method of pipeline rehabilitation filling slip casting |
| CN110578854A (en) * | 2019-09-26 | 2019-12-17 | 南京苏夏工程设计有限公司 | On-site pouring type heat preservation restoration method for buried steam heat preservation pipe |
| CN111663570A (en) * | 2020-05-19 | 2020-09-15 | 济南市市政工程设计研究院（集团）有限责任公司 | Gas well construction method and gas well structure of thermal power directly-buried pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171094A (en) * | 1994-11-23 | 1998-01-21 | 赫彻斯特股份公司 | Composite material containing aerogel, process for manufacturing said material and use thereof |
| CN201242017Y (en) * | 2008-08-21 | 2009-05-20 | 濮阳市中拓管道清洗修复工程有限公司 | Casing tube interlayer grouting external reinforced restoring pipeline |
| CN101619798A (en) * | 2009-07-10 | 2010-01-06 | 徐州黄山防腐保温工程有限公司 | Direct-embedded heating pipeline insulating layer non-evacuation process, slurry matching and equipment thereof |
| CN102378875A (en) * | 2008-11-12 | 2012-03-14 | Rwe动力股份公司 | Insulating cartridge |
| CN103542226A (en) * | 2012-07-17 | 2014-01-29 | 中国长江三峡集团公司 | Method for repairing large-diameter concrete water supply pipeline |
-
2014
- 2014-06-10 CN CN201410255223.2A patent/CN104075076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171094A (en) * | 1994-11-23 | 1998-01-21 | 赫彻斯特股份公司 | Composite material containing aerogel, process for manufacturing said material and use thereof |
| CN201242017Y (en) * | 2008-08-21 | 2009-05-20 | 濮阳市中拓管道清洗修复工程有限公司 | Casing tube interlayer grouting external reinforced restoring pipeline |
| CN102378875A (en) * | 2008-11-12 | 2012-03-14 | Rwe动力股份公司 | Insulating cartridge |
| CN101619798A (en) * | 2009-07-10 | 2010-01-06 | 徐州黄山防腐保温工程有限公司 | Direct-embedded heating pipeline insulating layer non-evacuation process, slurry matching and equipment thereof |
| CN103542226A (en) * | 2012-07-17 | 2014-01-29 | 中国长江三峡集团公司 | Method for repairing large-diameter concrete water supply pipeline |
Non-Patent Citations (2)
| Title |
|---|
| 任亮亮等: "《高强灌浆料在结构加强修补技术中的应用》", 《工程技术》 * |
| 张超: "超早强灌注性材料试验研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692129A (en) * | 2017-04-12 | 2018-10-23 | 管丽环境技术(上海)有限公司 | A kind of method of pipeline rehabilitation filling slip casting |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN108087658B (en) * | 2017-07-20 | 2019-10-11 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN110578854A (en) * | 2019-09-26 | 2019-12-17 | 南京苏夏工程设计有限公司 | On-site pouring type heat preservation restoration method for buried steam heat preservation pipe |
| CN111663570A (en) * | 2020-05-19 | 2020-09-15 | 济南市市政工程设计研究院（集团）有限责任公司 | Gas well construction method and gas well structure of thermal power directly-buried pipeline |
| CN111663570B (en) * | 2020-05-19 | 2021-11-09 | 济南市市政工程设计研究院（集团）有限责任公司 | Gas well construction method and gas well structure of thermal power directly-buried pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104075076A (en) | Repair process of heat distribution pipeline | |
| CN107121037B (en) | A kind of construction of cubic meter of stone static crushing | |
| CN105525901B (en) | A kind of coal seam hydraulic fracture reinforcing anti-reflection method based on microwave irradiation | |
| CN111456196A (en) | Grouting structure for repairing sewage pipeline and pipeline grouting repairing method | |
| CN110242267B (en) | Water injection fracturing shear test system and method for simulating geothermal system dry hot rock | |
| CN106014450B (en) | A kind of steel pipe concrete hollow bracket and its construction method | |
| CN101619798B (en) | Direct-embedded heating pipeline insulating layer non-evacuation process, slurry matching and equipment thereof | |
| CN103821114B (en) | A kind of reservoir culvert method for blocking discarded under seepage pressure effect | |
| CN104975570A (en) | Concrete lifting pouring construction method for steel tube arch bridge arch ribs | |
| CN103835216A (en) | Hardened pavement and house roof crack restoration apparatus and construction method thereof | |
| CN109267751A (en) | A kind of structure design and construction technique that crack preventing generates | |
| KR101289281B1 (en) | Method of constructing eco-friendly waterproof on the basement wall slab | |
| CN104478369B (en) | Synchronous grouting method for rectangular shield construction and grouting slurries | |
| CA2460753C (en) | Sealing fitting with expanding material | |
| CN214614083U (en) | Grouting assembly for repairing quality defects of karst geological cast-in-place pile | |
| JP2010270288A (en) | Chemical liquid injection material using water-absorbing resin having surface covered with hydrophilic polymer compound as coating material and chemical liquid injection construction method | |
| CN103322414A (en) | Method for fast and safely excavating oil-gas pipeline rock section emergent repair working pit | |
| CN104075077A (en) | Heat insulating material for repairing heat pipeline and preparation method and application thereof | |
| CN209508958U (en) | A kind of application static(al) abolishes pile crown system | |
| CN207392196U (en) | A kind of not casting pore-forming prestressed anchor and anchor hole leakage-proof structure | |
| CN102322010A (en) | Road surface porous resin seal layer and construction method thereof | |
| CN102953316A (en) | Road surface crack pouring machine | |
| RU2007112905A (en) | METHOD FOR DELIVERY OF LUGGING MATERIAL TO A WELL | |
| CN105401634A (en) | Pipeline plugging construction method based on data simulation | |
| JP3432030B2 (en) | Method of creating flow zone in frozen soil in freezing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |
|
| RJ01 | Rejection of invention patent application after publication |