CN214639015U

CN214639015U - Independent subregion monitoring devices in flexible landfill of hazardous waste

Info

Publication number: CN214639015U
Application number: CN202120872491.4U
Authority: CN
Inventors: 韦堤
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-11-09
Anticipated expiration: 2031-04-26

Abstract

The utility model belongs to the technical field of landfill seepage monitoring, in particular to a dangerous waste flexible landfill independent subarea monitoring device, which comprises an upper HDPE geomembrane, a lower HDPE geomembrane and a monitoring mechanism, wherein the monitoring mechanism is bonded on the top surface of the lower HDPE geomembrane through a hot melt adhesive layer, the monitoring mechanism consists of a plurality of independent monitoring units, the independent monitoring units comprise an upper seepage-proof film, lower prevention of seepage membrane, the shell body includes lower plate and last lid, the inside of going up the lid is equipped with adaptation installation film pressure sensor, meet the cavity of water inflation rubber strip, go up the water inlet of the inside cavity of lid in lining up is seted up to the side about the lid, film pressure sensor electric connection has total controller, total controller electric connection has the PC end, the infiltration water can make meeting water inflation rubber strip to take place the inflation after flowing into the lid inside, film pressure sensor receives to meet the pressure of water inflation rubber strip after trigger total controller and carry out the alarm and pinpoint the seepage point.

Description

Independent subregion monitoring devices in flexible landfill of hazardous waste

Technical Field

The utility model belongs to the technical field of landfill seepage monitoring, concretely relates to independent subregion monitoring devices of flexible landfill of hazardous waste.

Background

The landfill is a main means for harmless disposal of hazardous wastes, and the flexible landfill site is a landfill disposal facility adopting a double-man composite lining layer as an impermeable layer. Currently, the impermeable materials used in flexible landfills mainly include clays and synthetic materials, the most common of which is High Density Polyethylene (HDPE) impermeable membrane. The current research shows that almost all flexible landfill sites have leakage, and the leakage rate is relatively low in projects with good quality and high cost; secondly, the leaks created during landfills and the HDPE films allow some chemicals to pass through, resulting in greater leakage rates and greater contamination of groundwater. Therefore, landfill leak detection is of particular importance in order to prevent groundwater contamination.

SUMMERY OF THE UTILITY MODEL

The existing common detection means, such as leakage monitoring well detection, can only detect the existence of leakage and cannot accurately position the leakage position; for example, in the electrode grid detection, the positioning precision of the position of the detected leakage hole is low due to factors such as uneven resistivity of soil and the like in the detection process, and the situation of inaccurate positioning is easy to occur. The utility model provides an independent subregion monitoring devices in flexible landfill of hazardous waste, the seepage water can make meeting water inflation rubber strip to take place the inflation after flowing into inside the upper cover body, and film pressure sensor receives the pressure after-trigger total controller of meeting water inflation rubber strip and carries out the alarm and pinpoints the seepage point.

The utility model provides a following technical scheme: the utility model provides an independent subregion monitoring devices in flexible landfill of hazardous waste, includes HDPE geomembrane, lower HDPE geomembrane, monitoring mechanism, the top surface of HDPE geomembrane has monitoring mechanism through the fixed bonding of hot melt adhesive layer down, monitoring mechanism comprises a plurality of independent monitoring unit, independent monitoring unit includes prevention of seepage membrane, lower prevention of seepage membrane, shell body, the lower plate clamping device of shell body bottom is fixed at last prevention of seepage membrane under and between the prevention of seepage membrane, go up the opening of seting up the last lid at adaptation installation shell body top on the prevention of seepage membrane, the inside of going up the lid is equipped with adaptation installation film pressure sensor, meets the cavity of water inflation rubber strip, the water inlet of lining up the inside cavity of lid is seted up to the side about going up the lid, film pressure sensor electric connection has total controller, total controller electric connection has the PC end.

The upper HDPE geomembrane is laid above the monitoring mechanism, the hot melt adhesive layer is of a grid structure, and the hot melt adhesive layer is fixedly bonded on the edge part of the bottom surface of the lower impermeable membrane; a plurality of independent monitoring unit accessible hot melt adhesive layer stable connection installation is on HDPE geomembrane down, and the work that stabilizes is carried out to the holistic monitoring agency of assembling.

The outer shell comprises a lower bottom plate and an upper cover body, the bottom of the upper cover body is fixedly connected with the top surface of the lower bottom plate, and the top surface and the side surface of the upper cover body are both subjected to fillet treatment; the risk that HDPE geomembrane was scratched by upper cover body corner when pressurized can be reduced to the upper cover body that the fillet was handled.

The top surface of the lower bottom plate on the outer side of the upper cover body is coated with glue fixedly adhered to the bottom surface of the upper anti-seepage film, the bottom surface of the lower bottom plate is coated with glue fixedly adhered to the top surface of the lower anti-seepage film, the number of the outer shells is multiple, the lower anti-seepage film is arranged in a left-right equal sequence, the number of the water inlets is multiple, and the water inlets are arranged on the left side surface and the right side surface of the upper cover body in a front-back equal sequence; the seepage water can flow along the top surface of the upper anti-seepage film after entering the lower part of the upper HDPE geomembrane, enters the inner part of the upper cover body through the water inlet, and then carries out accurate positioning on a seepage point through the film pressure sensor and the water-swelling rubber strip.

The height of a cavity arranged in the upper cover body is 1-3 mm greater than the height of the film pressure sensor and the water-swellable rubber strip, the length of the cavity arranged in the upper cover body is 10-30 mm greater than the length of the water-swellable rubber strip, and the width of the cavity arranged in the upper cover body is 1-3 mm greater than the length of the water-swellable rubber strip; the outer shell can limit the volume and the position range of the water-swelling rubber strip after swelling, so that the swelling pressure generated by the water-swelling rubber strip can be accurately applied to the film pressure sensor, and the detection accuracy of the film pressure sensor is ensured.

The water-swelling rubber strip is a flat strip-shaped structure with a smooth surface, and the length of the water-swelling rubber strip is not less than that of the film pressure sensor; inside back of infiltration water entering shell body through the water inlet, the water-swelling rubber strip meets the water and takes place the inflation, increases the pressure that applies film pressure sensor, changes film pressure sensor's resistance value and realizes the real time monitoring to the leakage point.

The film pressure sensor is a strip-shaped film pressure sensor, the film pressure sensor is tiled on the top surface of the lower bottom plate, the film pressure sensor is electrically connected with a master controller through an A/D conversion module, and the master controller is electrically connected with an acousto-optic alarm; after the film pressure sensor detects the trigger pressure, the master controller controls the acousto-optic alarm to give out acousto-optic alarm, so that the staff is reminded in time.

The PC end is electrically connected with an RS485/USB converter, and the RS485/USB converter is electrically connected with a master controller through a twisted-pair cable; the PC end can be remotely connected with the plurality of film pressure sensors through RS485 communication, so that workers can conveniently and labor-saving monitor the leakage condition of the landfill.

The utility model has the advantages that: a plurality of independent monitoring units can be stably connected and installed on the lower HDPE geomembrane through hot melt adhesive layers, and an integrated monitoring mechanism is assembled to stably work; the upper cover body subjected to fillet treatment can reduce the risk that the upper HDPE geomembrane is scratched by the corners of the upper cover body when being pressed; the leakage water can flow along the top surface of the upper impermeable membrane after entering the lower part of the upper HDPE geomembrane, enters the inner part of the upper cover body through the water inlet, and is accurately positioned at a leakage point through the film pressure sensor and the water-swelling rubber strip; the outer shell can limit the volume and position range of the expanded water-swellable rubber strip, so that the swelling pressure generated by the water-swellable rubber strip can be accurately applied to the film pressure sensor, and the detection accuracy of the film pressure sensor is ensured; after the leakage water enters the outer shell through the water inlet, the water-swelling rubber strip swells when meeting water, the pressure applied to the film pressure sensor is increased, and the resistance value of the film pressure sensor is changed to realize real-time monitoring of a leakage point; after the film pressure sensor detects the trigger pressure, the master controller controls the acousto-optic alarm to give out acousto-optic alarm, so that a worker is reminded in time; the PC end can be remotely connected with the plurality of film pressure sensors through RS485 communication, so that workers can conveniently and labor-saving monitor the leakage condition of the landfill.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

FIG. 1 is a schematic view of a partial installation structure of the present invention;

fig. 2 is a schematic structural view of the monitoring mechanism of the present invention;

fig. 3 is a bottom view of the monitoring mechanism of the present invention;

fig. 4 is a schematic structural view of the outer shell of the present invention;

FIG. 5 is a longitudinal section of the outer housing of the present invention;

FIG. 6 is an enlarged view of A of the present invention;

FIG. 7 is an enlarged view of B of the present invention;

fig. 8 is a frame schematic diagram of the present invention;

in the figure: 1. coating a HDPE geomembrane; 2. lower HDPE geomembrane; 3. a hot melt adhesive layer; 4. a monitoring mechanism; 400. an independent monitoring unit; 401. an upper impermeable membrane; 402. a lower impermeable membrane; 403. an outer housing; 4031. a lower base plate; 4032. an upper cover body; 4033. a water inlet; 404. a thin film pressure sensor; 405. a water-swellable rubber strip; 5. a master controller; 501. an audible and visual alarm; 6. a PC terminal; 601. RS485/USB converter.

Detailed Description

Referring to fig. 1 to 8, the present invention provides the following technical solutions: an independent subregion monitoring devices in flexible landfill yard of hazardous waste, includes HDPE geomembrane 1, lower HDPE geomembrane 2, monitoring mechanism 4, the top surface of HDPE geomembrane 2 passes through hot-melt adhesive layer 3 and is fixed the bonding has monitoring mechanism 4 down, monitoring mechanism 4 comprises a plurality of independent monitoring unit 400, independent monitoring unit 400 includes prevention of seepage membrane 401, prevention of seepage membrane 402, shell body 403 down, lower bottom plate 4031 of shell body 403 bottom presss from both sides the dress and fixes between last prevention of seepage membrane 401 and prevention of seepage membrane 402 down, upward prevent that the last prevention of seepage membrane 401 is last to be seted up the opening of the upper cover 4032 at adaptation installation shell body 403 top, the inside of upper cover 4032 is equipped with the cavity of adaptation installation film pressure sensor 404, water-swelling rubber strip 405, the side sets up the water inlet 4033 that link up the inside cavity of upper cover 4032 about upper cover 4032, film pressure sensor 404 electric connection has total controller 5, the master controller 5 is electrically connected with a PC end 6.

The upper HDPE geomembrane 1 is laid above the monitoring mechanism 4, the hot melt adhesive layer 3 is of a grid structure, and the hot melt adhesive layer 3 is fixedly bonded on the edge part of the bottom surface of the lower impermeable membrane 402; a plurality of independent monitoring unit 400 accessible hot melt adhesive layer 3 stable connection installation is on HDPE geomembrane 2 down, and the work of stable is carried out to the monitoring institution 4 that assembles into an entirety.

The outer shell 403 comprises a lower base plate 4031 and an upper cover 4032, the bottom of the upper cover 4032 is fixedly connected with the top surface of the lower base plate 4031, and the top surface and the side surface of the upper cover 4032 are both subjected to fillet treatment; the rounded upper cover 4032 reduces the risk of the upper HDPE geomembrane 1 being scratched by the corners of the upper cover 4032 when under pressure.

The top surface of the lower bottom plate 4031 on the outer side of the upper cover 4032 is coated with glue fixedly adhered to the bottom surface of the upper impermeable membrane 401, the bottom surface of the lower bottom plate 4031 is coated with glue fixedly adhered to the top surface of the lower impermeable membrane 402, the number of the outer shells 403 is multiple, the lower impermeable membrane 402 is arranged in a left-right equal sequence, the number of the water inlets 4033 is multiple, and the water inlets are arranged on the left side surface and the right side surface of the upper cover 4032 in a front-back equal sequence; the leakage water can flow along the top surface of the upper impermeable membrane 401 after entering the lower part of the upper HDPE geomembrane 1, enters the inner part of the upper cover 4032 through the water inlet 4033, and then accurately positions a leakage point through the film pressure sensor 404 and the water-swelling rubber strip 405.

The height of a cavity arranged in the upper cover 4032 is 1-3 mm greater than the height of the film pressure sensor 404 and the height of the water-swellable rubber strip 405, the length of the cavity arranged in the upper cover 4032 is 10-30 mm greater than the length of the water-swellable rubber strip 405, and the width of the cavity arranged in the upper cover 4032 is 1-3 mm greater than the length of the water-swellable rubber strip 405; the outer shell 403 can limit the volume and position range of the water-swellable rubber strip 405 after swelling, so that the swelling pressure generated by the water-swellable rubber strip 405 can be accurately applied to the film pressure sensor 404, and the detection accuracy of the film pressure sensor 404 is ensured.

The water-swelling rubber strip 405 is a flat strip-shaped structure with a smooth surface, and the length of the water-swelling rubber strip 405 is not less than that of the film pressure sensor 404; after the leakage water enters the inside of the outer shell 403 through the water inlet 4033, the water-swelling rubber strip 405 swells when encountering water, the pressure applied to the film pressure sensor 404 is increased, and the resistance value of the film pressure sensor 404 is changed to realize real-time monitoring of a leakage point.

The film pressure sensor 404 is a strip-shaped film pressure sensor, the film pressure sensor 404 is tiled on the top surface of the lower base plate 4031, the film pressure sensor 404 is electrically connected with the master controller 5 through an A/D conversion module, and the master controller 5 is electrically connected with an acousto-optic alarm 501; after the film pressure sensor 404 detects the trigger pressure, the main controller 5 controls the sound-light alarm 501 to send out sound-light alarm, so as to remind the staff in time.

The PC end 6 is electrically connected with an RS485/USB converter 601, and the RS485/USB converter 601 is electrically connected with a master controller 5 through a twisted-pair cable; the PC end 6 can be remotely connected with the plurality of film pressure sensors 404 through RS485 communication, so that workers can conveniently and labor-saving monitor the leakage condition of the landfill.

The utility model discloses a theory of operation and use flow: after the lower HDPE geomembrane 2 is installed on a flexible landfill construction requirement and laid, brushing a hot melt adhesive layer 3 on the lower HDPE geomembrane 2 in a grid shape, simultaneously, regularly and flatly laying a plurality of independent monitoring units 400 on the lower HDPE geomembrane 2, and finally, fully laying the independent monitoring units 400 above the lower HDPE geomembrane 2, wherein during laying, the edge part of the bottom surface of a lower anti-seepage film 402 is fixedly adhered to the hot melt adhesive layer 3, and outer shells 403 on all the independent monitoring units 400 are laid in a parallel direction; then, the constructor lays the upper HDPE geomembrane 1 on the monitoring mechanism 4 to complete the installation of the monitoring mechanism 4; when the leakage point appears on the surface of last HDPE geomembrane 1, the water in the landfill flows in the below of HDPE geomembrane 1 through the leakage point, receive the blocking of last prevention of seepage membrane 401, flow along the top surface of last prevention of seepage membrane 401, get into the inside of shell body 403 through water inlet 4033, water-swelling rubber strip 405 meets the water and takes place the inflation, the pressure increase to film pressure sensor 404 applys, film pressure sensor 404's resistance value increases to the trigger point back total controller 5 control audible-visual alarm 501 sends audible-visual alarm, in time remind the site personnel, simultaneously through RS485 communication long-range transmission to PC end 6, the staff grasps the position of leakage point through the graphical interface real-time on the PC end 6.

Claims

1. The utility model provides an independent subregion monitoring devices of flexible landfill of hazardous waste which characterized in that: including last HDPE geomembrane, lower HDPE geomembrane, monitoring mechanism, the top surface of HDPE geomembrane is fixed through hot melt adhesive layer and is bonded down has monitoring mechanism, monitoring mechanism comprises a plurality of independent monitoring units, independent monitoring unit includes prevention of seepage membrane, lower prevention of seepage membrane, shell body, the lower plate clamping of shell body bottom is fixed at last prevention of seepage membrane under and between the prevention of seepage membrane, go up the opening of the last lid of seting up adaptation installation shell body top on the prevention of seepage membrane, the inside of going up the lid is equipped with adaptation installation film pressure sensor, meets the cavity of water inflation rubber strip, the water inlet of lining up the inside cavity of lid is seted up to the side about going up the lid, film pressure sensor electric connection has total controller, total controller electric connection has the PC end.

2. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: go up the HDPE geomembrane and lay in monitoring mechanism's top, the hot melt adhesive layer is the latticed structure, the hot melt adhesive layer is fixed to be bonded in the limit portion of prevention of seepage membrane bottom surface down.

3. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: the shell body comprises a lower bottom plate and an upper cover body, the bottom of the upper cover body is fixedly connected with the top surface of the lower bottom plate, and the top surface and the side surface of the upper cover body are both subjected to fillet treatment.

4. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: the top surface coating of the lower plate in the upper cover body outside has the glue of prevention of seepage membrane bottom surface on the fixed bonding, the bottom surface coating of lower plate has the glue of the top surface of prevention of seepage membrane under the fixed bonding, the quantity of shell body is a plurality of, controls the equipartition and arranges on the prevention of seepage membrane down, the quantity of water inlet is a plurality of, and the equipartition is seted up on the side of controlling of upper cover body around.

5. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: go up the inside cavity that is equipped with of lid highly be greater than film pressure sensor and meet water inflation rubber strip's high 1 ~ 3mm in addition, the length of going up the inside cavity that is equipped with of lid is greater than the length 10 ~ 30mm who meets water inflation rubber strip, the width of going up the inside cavity that is equipped with of lid is greater than the length 1 ~ 3mm who meets water inflation rubber strip.

6. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: the water-swelling rubber strip is a flat long-strip-shaped structure with a smooth surface, and the length of the water-swelling rubber strip is not less than that of the film pressure sensor.

7. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: the film pressure sensor is a strip-shaped film pressure sensor, the film pressure sensor is tiled on the top surface of the lower bottom plate, the film pressure sensor is electrically connected with the master controller through the A/D conversion module, and the master controller is electrically connected with the acousto-optic alarm.

8. The flexible hazardous waste landfill independent zone monitoring device of claim 1, wherein: the PC end is electrically connected with an RS485/USB converter, and the RS485/USB converter is electrically connected with a master controller through a twisted-pair cable.