CN111974793B - In-situ thermal desorption steam pipe mechanism for soil remediation and laying and disassembling method thereof - Google Patents
In-situ thermal desorption steam pipe mechanism for soil remediation and laying and disassembling method thereof Download PDFInfo
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- CN111974793B CN111974793B CN202010932692.9A CN202010932692A CN111974793B CN 111974793 B CN111974793 B CN 111974793B CN 202010932692 A CN202010932692 A CN 202010932692A CN 111974793 B CN111974793 B CN 111974793B
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- 239000002689 soil Substances 0.000 title claims abstract description 81
- 230000007246 mechanism Effects 0.000 title claims abstract description 71
- 238000003795 desorption Methods 0.000 title claims abstract description 21
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005067 remediation Methods 0.000 title claims description 4
- 238000011049 filling Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims 3
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003802 soil pollutant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses a steam pipe mechanism for in-situ thermal desorption of soil and a laying and disassembling method, wherein the steam pipe mechanism comprises a pipe body, the surface of which is provided with air holes, an auxiliary pipe body is coaxially arranged in the pipe body, a containing cavity is formed between the inner wall of the pipe body and the outer wall of the auxiliary pipe body, the side wall of the auxiliary pipe body is provided with an air hole, the side wall of the pipe body is provided with a mounting hole, a bag body is communicated with the mounting hole, a supporting framework is arranged in the bag body, a first collecting and paying mechanism and a second collecting and paying mechanism are respectively arranged in the pipe body, the first collecting and paying mechanism is connected with the supporting framework through a first rope, and the second collecting and paying mechanism is connected with the inner wall of the bag body through a second rope, so that the bag body can be pulled into the containing cavity through the second rope. The problem of increase steam pipe heat transfer efficiency through increasing horizontal branch pipe or pipe chute among the prior art, need the secondary excavation when dismantling, not only increase construction cost, often can destroy the pipeline moreover at the secondary excavation in-process, influence secondary and use is solved.
Description
Technical Field
The invention relates to the field of environmental engineering, in particular to a steam pipe mechanism for in-situ thermal desorption of soil and a laying and disassembling method.
Background
The soil thermal desorption technology is mainly a process of heating organic pollutants in the soil to a sufficient temperature by directly or indirectly exchanging heat with the polluted soil so as to volatilize or separate the organic pollutants from a polluted medium and enter a gas treatment system. The thermal desorption technology has the advantages of wide pollutant treatment range, movable equipment, reusability of the repaired soil and the like, and particularly can remarkably reduce the generation of dioxin on chlorinated organics such as PCBs in a non-oxidation combustion treatment mode. The in-situ treatment can be carried out in situ in a polluted site, and the polluted soil does not need to be transferred. For example, chinese patent No. 201610105239.4 provides a device and a method for treating soil pollutants by distillation, the device comprises a steam high-pressure boiler, a main steel pipe, a branch steel pipe, a water injection steel pipe, a condenser pipe, a concrete cover plate, a geomembrane and a collecting device, the main steel pipe is communicated with the steam high-pressure boiler, the water injection steel pipe is communicated with the main steel pipe, the geomembrane is attached to the surface of the inner part of a soil pit, the concrete cover plate is sealed at the opening of the soil pit, one end of the branch steel pipe is tapped into the inner part of the closed space, and the other end of the branch steel pipe extends through the concrete cover plate along the length direction and is communicated with the main steel pipe; one end of the condensation pipe is communicated with the inside of the closed space, and the other end of the condensation pipe is communicated with the collecting device. Through injecting high temperature steam into soil, heat contaminated soil, evaporate the collection with volatilizable pollutant in the soil. Steam injection pipeline such as among the above-mentioned soil thermal desorption technique all is the straight tube type, need insert many steam conduit in soil, just can satisfy the demand of steam at the inside diffusion of soil, and when steam outwards diffused from the pipeline lateral wall, it is difficult for effectively diffusing sometimes to receive the influence of soil density, leads to soil heating inefficiency. If chinese patent No. 201610391178.2 provides an in situ heating device and in situ heating soil remediation system thereof, the in situ heating device includes a heat flow inlet pipe provided with an inlet hole on a sidewall, a heat flow outlet pipe provided with an outlet hole on the sidewall, and an annular heating branch communicated with the inlet hole and the outlet hole, the annular heating branch is disposed in the soil to be remediated, the contact area with the soil is increased by disposing the annular heating branch, and the heat transfer effect is improved.
Disclosure of Invention
The invention aims to provide a steam pipe mechanism for in-situ thermal desorption of soil and a laying and disassembling method, and solves the problems that in the prior art, the heat transfer efficiency of a steam pipe is increased by adding a horizontal branch pipe or an inclined pipe, secondary excavation is needed during disassembly, the construction cost is increased, and the secondary use is influenced because pipelines are often damaged in the secondary excavation process.
In order to achieve the purpose, the invention provides a steam pipe mechanism for in-situ thermal desorption of soil, which comprises a pipe body, wherein air holes are formed in the surface of the pipe body, an auxiliary pipe body is coaxially arranged in the pipe body, a containing cavity is formed between the inner wall of the pipe body and the outer wall of the auxiliary pipe body, the side wall of the auxiliary pipe body is provided with an air hole communicated with the containing cavity, the side wall of the pipe body is provided with a mounting hole communicated with the containing cavity, the mounting hole is communicated with a strip-shaped bag body, the surface of the bag body is provided with a plurality of air outlet holes, a plurality of supporting frameworks are arranged in the bag body, a first collecting and paying mechanism and a second collecting and paying mechanism are further respectively arranged in the pipe body, the first collecting and paying mechanism is connected with the supporting frameworks through a first rope, so that the first rope can be pulled to fold the supporting frameworks, and the second collecting and paying mechanism is connected with the inner wall of the bag body through a second rope, so that the second rope can pull the bag body into the containing cavity.
Preferably, the first payment mechanism comprises a supporting rod fixed on the inner wall of the pipe body, a first rotating shaft is rotatably arranged on the supporting rod, a first rotating drum located in the auxiliary pipe body is coaxially fixed on the first rotating shaft, one end of a first rope is fixed on the first rotating drum, and the other end of the first rope sequentially penetrates through the air vent and the mounting hole and is connected with the supporting framework.
Preferably, the second payment mechanism comprises a second rotating shaft which is rotatably arranged on the supporting rod, a second rotating drum is arranged on the second rotating shaft, so that the second rotating shaft can drive the second rotating drum to rotate, one end of the second rope is fixed on the second rotating drum, and the other end of the second rope penetrates through the mounting hole and is fixed on the inner wall of the bag body.
Preferably, a support plate located below the secondary pipe body is fixed to the inner wall of the pipe body, a through hole is formed in the support plate, the second drum is rotatably arranged in the through hole, a gear ring is coaxially fixed to the end of the second drum, a driving gear meshed with the gear ring is coaxially fixed to the second rotating shaft, and the first rotating shaft penetrates through the second drum.
Preferably, a bearing is coaxially fixed on the inner wall of the through hole, and the second drum is at least partially fixed on an inner ring of the bearing.
Preferably, the upper end of the auxiliary pipe body is connected with the inner wall of the pipe body through a first annular plate, the lower end of the auxiliary pipe body is connected with the inner wall of the pipe body through a second annular plate, a through hole is formed in the second annular plate, and the second rope at least partially penetrates through the through hole and is connected with the second drum.
Preferably, a guide wheel located below the second ring plate is fixed to the inner wall of the pipe body, and the second rope is at least partially clamped on the guide wheel.
Preferably, the support chassis includes the articulated frame, the both ends of articulated frame articulate respectively has the crank, articulate respectively through the articulated elements in articulate the pivoted tip has the supporting disk, the supporting disk is fixed the inner wall of the bag body.
Preferably, a plurality of the support skeleton is followed the length direction equidistance interval of the bag body sets up, and two adjacent articulated framves of support skeleton pass through the rope and connect, are close to the mounting hole the articulated frame of support skeleton pass through first rope with first mechanism of collecting and paying is connected.
The invention also provides a laying and disassembling method of the steam pipe mechanism, which comprises the following steps:
1) Excavating a soil area to be repaired to form a soil pit;
2) Inserting the pipe body into the soil pit, and filling part of soil into the soil pit, wherein the height of the soil is flush with the lower edge of the mounting hole;
3) The bag body is radially expanded along the circumferential direction of the pipe body, and the supporting framework is in a supporting state;
4) Filling the residual soil into the soil pit;
5) After the thermal desorption of the soil is completed, starting a first collecting mechanism, driving the supporting framework to fold through a first rope, and then starting a second collecting mechanism to pull the bag body into the containing cavity;
6) And pulling the pipe body out of the soil pit by utilizing hoisting equipment.
The invention provides a steam pipe mechanism for in-situ thermal desorption of soil and a laying and disassembling method, wherein the steam pipe mechanism comprises a pipe body, the surface of which is provided with air holes, a secondary pipe body is coaxially arranged in the pipe body, a containing cavity is formed between the inner wall of the pipe body and the outer wall of the secondary pipe body, the side wall of the secondary pipe body is provided with an air hole communicated with the containing cavity, the side wall of the pipe body is provided with a mounting hole communicated with the containing cavity, a strip-shaped bag body is communicated with the mounting hole, the surface of the bag body is provided with a plurality of air outlet holes, a plurality of support frameworks are arranged in the bag body, a first collecting mechanism and a second collecting mechanism are also respectively arranged in the pipe body, the first collecting mechanism is connected with the support frameworks through a first rope, so that the support frameworks can be folded by pulling the first rope, and the second collecting mechanism is connected with the inner wall of the bag body through a second rope, so that the bag body can be pulled into the containing cavity through the second rope; during construction, excavation is carried out on soil to be repaired, the pipe body is inserted into a soil pit formed, then, soil is filled to the lower edge of the mounting hole, the bag body is installed on the mounting hole, the supporting framework supports the bag body, a certain cavity is formed in the bag body, then, residual soil is filled, high-temperature steam is injected into the pipe body, one part of the steam enters the soil through the air holes in the surface of the pipe body, the other part of the steam enters the inside of the bag body through the auxiliary pipe body, the air vents and the mounting hole, and the steam enters the inside of the soil through the air outlet holes in the bag body, the bag body can be distributed in a surrounding mode along the circumferential surface radiation of the pipe body, the range of the steam entering the inside of the soil is enlarged, the thermal desorption effect of the soil is improved, the distribution quantity of the pipe body is reduced, engineering budget is saved, after thermal desorption is completed, the supporting framework is dragged and folded through the first collecting mechanism and the first rope, then the bag body is dragged into the containing cavity through the second collecting mechanism and the second rope, after the thermal desorption is completed, the pipe body is vertically pulled out of the soil through the hoisting equipment, secondary excavation is not needed, the pipe body is fast to be dismantled, the pipe body is not prone to be damaged, and the secondary use is convenient.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a structural view of a steam pipe mechanism provided by the present invention;
FIG. 2 is a top view of the steam pipe mechanism provided by the present invention;
FIG. 3 isbase:Sub>A cross-sectional view of the steam pipe mechanism provided in FIG. 2 taken along the direction A-A;
FIG. 4 is an internal structural view of a steam pipe mechanism provided by the present invention;
FIG. 5 is a structural view of a second drum in the steam pipe mechanism provided by the present invention;
FIG. 6 is a structural view of a support frame in the steam pipe mechanism according to the present invention in a first state;
FIG. 7 is a structural view of a support frame in the steam pipe mechanism according to the present invention in a second state;
FIG. 8 is a construction map of the steam pipe mechanism provided by the present invention.
Description of the reference numerals
1-tube, 101-secondary tube, 102-first ring plate, 103-second ring plate, 104-vent hole, 105-support rod, 106-support plate, 107-mounting hole, 108-vent hole, 109-receiving cavity, 110-flange plate, 111-through hole, 2-second rotating shaft, 201-drive gear, 202-second rotating drum, 3-first rotating shaft, 301-first rotating drum, 302-bearing, 303-gear ring, 4-guide wheel, 5-bag, 6-support framework, 601-support disc, 602-hinge part, 603-hinge frame, 604-crank, 605-stop plate, 606-pull ring, 7-first rope, 8-guide ring, 9-second rope, 10-exhaust tube, 11-injection tube, 12-support, 13-first motor, 14-second motor.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1-8: the invention provides a steam pipe mechanism for in-situ thermal desorption of soil, which comprises a pipe body 1, wherein air holes 108 are formed in the surface of the pipe body 1, a metal mesh can be installed in the air holes 108, larger sand and stones are prevented from entering the inside of the pipe body 1 through the air holes 108, an auxiliary pipe body 101 is coaxially arranged in the pipe body 1, a containing cavity 109 is formed between the inner wall of the pipe body 1 and the outer wall of the auxiliary pipe body 101, the side wall of the auxiliary pipe body 101 is provided with vent holes 104 communicated with the containing cavity 109, the side wall of the pipe body 1 is provided with mounting holes 107 communicated with the containing cavity 109, a plurality of mounting holes 107 can be arranged according to requirements, the mounting holes 107 are distributed around the circumferential surface of the pipe body 1 at equal intervals, the vent holes 104 can correspond to the mounting holes 107 in number one to one, and strip-shaped bag bodies 5 are communicated with the mounting holes 107, one end of the bag body 5 is provided with an opening, the opening at least partially extends into the mounting hole 107 and is fixed on the inner wall of the tube body 1, the surface of the bag body 5 is provided with a plurality of air outlet holes, the inside of the bag body 5 is provided with a plurality of supporting frameworks 6, the supporting frameworks 6 are conveniently unfolded when the pipeline is arranged, the side edge of the bag body 5 can be provided with an opening, the opening can be provided with a closing mechanism such as a zipper, and the opening is conveniently closed after the supporting frameworks 6 are unfolded when the pipeline is arranged, the tube body 1 is also respectively provided with a first collecting mechanism and a second collecting mechanism, the first collecting mechanism is connected with the supporting frameworks 6 through a first rope 7, so that the supporting frameworks 6 can be folded by pulling the first rope 7, and the second collecting mechanism is connected with the inner wall of the bag body 5 through a second rope 9, so that it can pull the bag body 5 into the receiving cavity 109 by the second rope 9. During construction, soil to be repaired is excavated, the pipe body 1 is inserted into a soil pit, then the soil is filled to the lower edge of the mounting hole 107, the bag body 5 is mounted on the mounting hole 107, the support framework 6 props the bag body 5 open to form a certain cavity inside the bag body, then the residual soil is buried, high-temperature steam is injected into the pipe body 1, one part of the steam enters the soil through the air holes 108 on the surface of the pipe body 1, the other part of the steam enters the bag body 5 through the auxiliary pipe body 101, the air holes 104 and the mounting hole 107 and enters the soil through the air outlet holes on the bag body 5, the bag body 5 can be distributed around the circumferential surface of the pipe body 1 in a radiation mode, the range of the steam entering the soil is enlarged, the soil thermal desorption effect is improved, the distribution quantity of the pipe body 1 is reduced, the engineering budget is saved, after the thermal desorption is completed, the support framework 6 is pulled and folded through the first collecting mechanism and the first rope 7, then the bag body 5 is dragged into the containing cavity 109 through the second collecting mechanism and the second rope 9, because the supporting framework 6 is in an unfolded state when being filled with soil, the supporting framework 6 can effectively support the bag body 5, so that a cavity is formed inside, and steam is convenient to inject, a plurality of supporting frameworks 6 can be arranged according to the pre-embedded depth of the bag body 5, so as to effectively equally divide the weight of the soil, and avoid the collapse of the supporting framework 6, when the supporting framework 6 is folded, because the occupied volume of the bag body 5 is smaller, the soil around the bag body 5 can form a certain cavity, and cannot immediately collapse, the bag body 5 is conveniently dragged, after the completion, the pipe body 1 can be vertically pulled out from the soil by utilizing hoisting equipment, secondary excavation is not needed, the pipe body dismantling speed is high, and the pipe body is not easy to damage in the dismantling process, is convenient for secondary use.
As shown in fig. 1,3 and 4, in a preferred embodiment of the present invention, in order to facilitate pulling of the first rope 7, the first paying-off mechanism includes a support rod 105 fixed to an inner wall of the pipe body 1, a first rotating shaft 3 is rotatably provided on the support rod 105, a first drum 301 located in the sub-pipe body 101 is coaxially fixed to the first rotating shaft 3, one end of the first rope 7 is fixed to the first drum 301, and the other end thereof penetrates through the vent hole 104 and the mounting hole 107 in sequence and is connected to the support frame 6. The surface of the first drum 301 can be provided with a plurality of annular grooves from top to bottom, the number of the first ropes 7 is set according to the number of the bags 5, for example, the number of the bags 5 is four, the corresponding annular grooves and the first ropes 7 are all set to four, the end of each first rope 7 is fixed in one annular groove, each first rope 7 is pulled by rotating the first drum 301, and each first rope 7 is staggered by a certain distance along the upper and lower positions to avoid mutual winding.
In a preferred embodiment of the present invention, the second payment receiving mechanism includes a second rotating shaft 2 rotatably disposed on the supporting rod 105, a second rotating drum 202 is disposed on the second rotating shaft 2, so that the second rotating shaft 2 can drive the second rotating drum 202 to rotate, one end of the second rope 9 is fixed on the second rotating drum 202, and the other end of the second rope passes through the mounting hole 107 and is fixed on the inner wall of the bag 5. Here, the surface of the second drum 202 may be provided with a plurality of annular grooves at intervals in the vertical direction, the number of the second ropes 9 corresponds to the number of the arranged pockets 5, and each second rope 9 is at least partially wound in the annular groove, so that the plurality of second ropes 9 are staggered at intervals in the vertical direction to avoid mutual winding interference.
In a preferred embodiment of the present invention, in order to make the components inside the pipe body 1 more reasonable and save the occupied space of the components, a support plate 106 located below the secondary pipe body 101 is fixed to the inner wall of the pipe body 1, a through hole is provided in the support plate 106, the second drum 202 is rotatably provided in the through hole, a gear ring 303 is coaxially fixed to an end of the second drum 202, a drive gear 201 engaged with the gear ring 303 is coaxially fixed to the second rotating shaft 2, and the first rotating shaft 3 penetrates the second drum 202. Preferably, a bearing 302 is coaxially fixed on the inner wall of the through hole, and the second drum 202 is at least partially fixed on the inner ring of the bearing 302. The bearing 302 here can adopt a ball bearing, including an outer ring and an inner ring disposed inside the outer ring through balls, the outer ring of the bearing 302 is fixed in the through hole, and the second drum 202 is coaxially fixed on the inner ring, so that the first rotating shaft 3 penetrates the second drum 202, the rotation of the second drum 202 and the rotation of the first rotating shaft 3 do not affect each other, the gear rings 303 here can be two sets, which are respectively disposed at the upper and lower ends of the second drum 202, and the second rotating shaft 2 is also provided with two sets of corresponding driving gears 201.
In a preferred embodiment of the present invention, in order to effectively fix the sub-pipe 101, the upper end of the sub-pipe 101 is connected to the inner wall of the pipe 1 through a first ring plate 102, the lower end of the sub-pipe is connected to the inner wall of the pipe 1 through a second ring plate 103, the second ring plate 103 is provided with a through hole 111, and the second rope 9 at least partially penetrates through the through hole 111 and is connected to the second drum 202. The first ring plate 102, the second ring plate 103, the outer wall of the secondary pipe body 101 and the inner wall of the pipe body 1 enclose the receiving cavity 109, and the mounting hole 107 is located at an upper portion of the receiving cavity 109.
In a preferred embodiment of the present invention, a guide pulley 4 positioned below the second ring plate 103 is fixed to an inner wall of the pipe body 1, and the second rope 9 is at least partially engaged with the guide pulley 4. As shown in fig. 1, the duct 1 is arranged in the vertical direction, the bag body 5 is arranged in the horizontal direction, one end of the second rope 9 is fixed on the inner wall of the bag body 5, the other end extends to the lower part of the second ring plate 103 in the vertical direction, and is changed to the horizontal direction by the guide wheel 4 and wound on the second drum 202, wherein the first drum 301 and the second drum 202 are both arranged in the vertical direction and can rotate by taking the axis thereof as the axis. The number of guide wheels 4 is here set according to the number of pockets 5 and second cords 9 actually provided. In a preferred embodiment of the present invention, in order to pull the bag 5 into the receiving cavity 109 together with the support frame 6, the end of the second rope 9 is connected to the inner end of the bag 5, that is, to the inner wall of the bag 5 at the end far from the mounting hole 107, a plurality of guide rings 8 may be provided at intervals along the longitudinal direction of the bag 5 on the inner wall of the bag 5, and the second rope 9 sequentially penetrates the plurality of guide rings 8.
In a preferred embodiment of the present invention, the supporting framework 6 includes a hinged frame 603, two ends of the hinged frame 603 are respectively hinged with a crank 604, ends of the cranks 604 are respectively hinged with a supporting plate 601 through hinges 602, and the supporting plates 601 are fixed on the inner wall of the bag body 5. Here, the two support plates 601 are arranged along the horizontal direction to support the bag body 5, the number of the support frames 6 therein may be set according to the pre-buried soil depth, the hinge 602 and the hinge manner between the crank 604 and the hinge rack 603 may be a hinge structure which is conventional and commonly used in the art, in order to make the support frames 6 more stable when supporting the bag body 5, a stop plate 605 is fixed on one side of the support plate 601 away from the installation hole 107, as shown in fig. 6, so that the crank 604 can only be bent towards the installation hole 107, and is limited from being bent towards the opposite direction, an elastic plug may be arranged in the crank 604 close to the stop plate 605, the stop plate 605 is provided with an insertion slot which is matched with the elastic plug, and when the crank 604 is in the vertical state (i.e., the support state), the elastic plug is inserted into the insertion slot, so as to improve the stability of the support frames 6 in the support state.
In a preferred embodiment of the present invention, a plurality of the supporting skeletons 6 are disposed at equal intervals along the length direction of the bag body 5, the hinge frames 603 of two adjacent supporting skeletons 6 are connected by a rope, and the hinge frame 603 of the supporting skeleton 6 near the mounting hole 107 is connected to the first collecting and dispensing mechanism by the first rope 7. As shown in fig. 1, when a plurality of supporting frameworks 6 are in a supporting state, the hinge brackets 603 on two adjacent supporting frameworks 6 are connected through a rope, the rope is in a tightened state at this time, the plurality of ropes are on the same axis, for the convenience of installing the rope, pull rings 606 are fixed on two sides of the hinge brackets 603, a first rope 7 is fixed on the hinge bracket 603 closest to the installing hole 107, and when the first rope 7 is pulled, the supporting frameworks 6 are as shown in fig. 7, and all the supporting frameworks 6 are driven to be bent through the rope.
As shown in fig. 8, when the steam pipe mechanism provided by the present invention is used for specific soil in-situ thermal desorption, flanges 110 are respectively disposed at two ends of the pipe body 1, during specific construction, a plurality of pipe bodies 1 may be connected through the flanges 110, or the steam pipe mechanism and a common pipeline may be connected through the flanges 110 for use, as shown in fig. 8, a specific construction method is provided, two pipe bodies 1 are connected through the flanges 110, a first rotating shaft 3 and a second rotating shaft 2 of the two pipe bodies 1 are connected through a coupler, upper and lower ends of the two pipe bodies 1 may be respectively connected to a common pipeline, at least a portion of the common pipeline at the upper end extends above the soil surface, the common pipeline at the upper end may be communicated with an injection pipe 11, so as to facilitate injection of high-temperature steam, a support 12 may be disposed above the common pipeline, a first motor 13 and a second motor 14 are respectively disposed on the support 12, the first motor 13 is coaxially connected with the first rotating shaft 3 through a coupler, the second motor 14 is coaxially connected to the second rotating shaft 2 through a coupler, and an extraction pipe 10 may be disposed between the two steam pipe mechanisms, so as to facilitate adsorption and collection of volatile pollutants generated by adsorption. When the pipeline needs to be disassembled, the support 12 is disassembled according to the steps, and the pipeline is vertically pulled by using the hoisting equipment.
The invention also provides a laying and disassembling method of the steam pipe mechanism, which comprises the following steps:
1. excavating a soil area to be repaired to form a soil pit;
2. inserting the pipe body 1 into the soil pit, and filling part of soil into the soil pit, wherein the height of the soil is flush with the lower edge of the mounting hole 107;
3. the bag body 5 is radially unfolded along the circumferential direction of the pipe body 1, and the supporting framework 6 is in a supporting state;
4. filling the residual soil into the soil pit;
5. after the thermal desorption of the soil is completed, the first collection mechanism is started, the supporting framework 6 is driven to fold through the first rope 7, and then the second collection mechanism is started to pull the bag body 5 into the collection cavity 109;
6. the pipe body 1 is pulled out from the soil pit by using a hoisting device.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications all fall within the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (7)
1. The steam pipe mechanism for in-situ thermal desorption for soil remediation is characterized by comprising a pipe body (1) with an air hole (108) formed in the surface, an auxiliary pipe body (101) is coaxially arranged in the pipe body (1), a storage cavity (109) is formed between the inner wall of the pipe body (1) and the outer wall of the auxiliary pipe body (101), the side wall of the auxiliary pipe body (101) is provided with an air hole (104) communicated with the storage cavity (109), the side wall of the pipe body (1) is provided with a mounting hole (107) communicated with the storage cavity (109), a strip-shaped bag body (5) is communicated on the mounting hole (107), the surface of the bag body (5) is provided with a plurality of air outlet holes, a plurality of support frameworks (6) are arranged in the bag body (5), a first collection mechanism and a second collection mechanism are further respectively arranged in the pipe body (1), the first collection mechanism is connected with the support frameworks (6) through a first rope (7), so that the first collection mechanism can pull the support frameworks (6) through the rope (9), and the second collection mechanism can be connected with the inner wall of the bag body (9) through the rope (109); the first collection and payment mechanism comprises a supporting rod (105) fixed on the inner wall of the pipe body (1), a first rotating shaft (3) is rotatably arranged on the supporting rod (105), a first rotating drum (301) positioned in the auxiliary pipe body (101) is coaxially fixed on the first rotating shaft (3), one end of a first rope (7) is fixed on the first rotating drum (301), and the other end of the first rope sequentially penetrates through the vent hole (104) and the mounting hole (107) and is connected with the supporting framework (6); the second payment mechanism comprises a second rotating shaft (2) which is rotatably arranged on the supporting rod (105), a second rotating drum (202) is arranged on the second rotating shaft (2), so that the second rotating shaft (2) can drive the second rotating drum (202) to rotate, one end of the second rope (9) is fixed on the second rotating drum (202), and the other end of the second rope penetrates through the mounting hole (107) and is fixed on the inner wall of the bag body (5); a supporting plate (106) located below the auxiliary pipe body (101) is fixed to the inner wall of the pipe body (1), a through hole is formed in the supporting plate (106), the second rotating drum (202) is rotatably arranged in the through hole, a gear ring (303) is coaxially fixed to the end portion of the second rotating drum (202), a driving gear (201) meshed with the gear ring (303) is coaxially fixed to the second rotating shaft (2), and the first rotating shaft (3) penetrates through the second rotating drum (202).
2. The steam pipe mechanism according to claim 1, wherein a bearing (302) is coaxially fixed to an inner wall of the through-hole, and the second drum (202) is at least partially fixed to an inner ring of the bearing (302).
3. A steam pipe mechanism according to claim 2, characterized in that the secondary pipe body (101) is connected at its upper end to the inner wall of the pipe body (1) by a first ring plate (102) and at its lower end to the inner wall of the pipe body (1) by a second ring plate (103), the second ring plate (103) being provided with a through hole (111), the second rope (9) extending at least partially through the through hole (111) and being connected to the second drum (202).
4. A steam tube mechanism according to claim 3, characterized in that a guide wheel (4) is fixed to the inner wall of the tube body (1) below the second ring plate (103), the second rope (9) being at least partly snapped onto the guide wheel (4).
5. A steam pipe mechanism according to any one of claims 1 to 4, characterized in that the supporting framework (6) comprises a hinged frame (603), both ends of the hinged frame (603) are respectively hinged with a crank (604), the ends of the crank (604) are respectively hinged with a supporting plate (601) through a hinged piece (602), and the supporting plate (601) is fixed on the inner wall of the bag body (5).
6. The steam pipe mechanism according to claim 5, wherein a plurality of the supporting frameworks (6) are arranged at equal intervals along the length direction of the bag body (5), the hinge frames (603) of two adjacent supporting frameworks (6) are connected through a rope, and the hinge frame (603) of the supporting framework (6) close to the mounting hole (107) is connected with the first collecting mechanism through the first rope (7).
7. A method of laying and disassembling the steam pipe mechanism according to any one of claims 1 to 6, comprising:
1) Excavating a soil area to be repaired to form a soil pit;
2) Inserting the pipe body (1) into the soil pit, and filling part of soil into the soil pit, wherein the height of the soil is flush with the lower edge of the mounting hole (107);
3) The bag body (5) is radially expanded along the circumferential direction of the tube body (1), and the supporting framework (6) is in a supporting state;
4) Filling the residual soil into the soil pit;
5) After the thermal desorption of the soil is completed, starting a first collecting mechanism, driving a supporting framework (6) to fold through a first rope (7), and then starting a second collecting mechanism to pull the bag body (5) into the containing cavity (109);
6) And pulling the pipe body (1) out of the soil pit by utilizing hoisting equipment.
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Effective date of registration: 20221014 Address after: 230031 Room 1501, Floor 15, Building A, Phase III (South Area), Huguang Road, Shushan Economic Development Zone, Hefei, Anhui Province Applicant after: ANHUI TUOSHUI ENVIRONMENT ENGINEERING TECHNOLOGY CO.,LTD. Address before: 241000 building 4, Service Outsourcing Industrial Park, Yijiang District, Wuhu City, Anhui Province Applicant before: Jiang Weili |
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Denomination of invention: A in-situ thermal desorption steam pipe mechanism for soil remediation and its laying and dismantling method Effective date of registration: 20231007 Granted publication date: 20221025 Pledgee: Hefei science and technology rural commercial bank Limited by Share Ltd. Shushan branch Pledgor: ANHUI TUOSHUI ENVIRONMENT ENGINEERING TECHNOLOGY CO.,LTD. Registration number: Y2023980060093 |
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