Real-time monitoring system and method for temperature and pressure of garbage pool

Abstract

The application provides a garbage pool temperature and pressure real-time monitoring system and method, which comprises a monitoring data measurement unit for measuring relevant data of a pool wall of a garbage pool, the monitoring data measurement unit comprising a temperature measurement unit for measuring temperature data of the pool wall and a pressure measurement unit for measuring pressure data of the pool wall; an information acquisition unit for acquiring the relevant data measured by the monitoring data measurement unit and uploading to a central processing unit; and the central processing unit for receiving the relevant data, performing data operation and processing on the relevant data according to a preset data processing rule, and generating a data change model of the pool wall. The central processing unit uses the garbage pool temperature and pressure real-time monitoring system to perform real-time monitoring on the internal state of the garbage pool through a garbage pool temperature and pressure real-time monitoring method, and timely adjustment is made, so that the service life of the garbage pool is increased, and the problems of cracking or deformation of the pool wall are avoided.

Description

Technical Field

[0001] This invention relates to the field of waste incineration technology, and more specifically, to a real-time monitoring system for the temperature and pressure of a waste pit and a detection method using the real-time monitoring system for the temperature and pressure of a waste pit. Background Technology

[0002] In recent years, with the increase in the number of waste-to-energy plants in China and the extended operating time of existing plants, problems such as cracking, leakage, or severe deformation of waste incineration pool walls have emerged in several power plants. Cracks or deformation of the pool walls not only affect the normal production and social evaluation of the power plant, but in severe cases can even lead to safety accidents and directly threaten the natural ecological environment.

[0003] Among the aforementioned problems, the temperature and lateral pressure of the waste incineration pit walls are the main causes of cracking. However, due to the lack of accurate measurement data, the existing waste incineration power plants either have insufficient resistance, leading to cracking and leakage, or excessive resistance, resulting in economic waste.

[0004] When designing the structure of a waste disposal site wall, it is important to consider the density of the waste disposal site and the magnitude of the lateral pressure on the site wall. This is because the density of the waste disposal site and the magnitude of the lateral pressure on the site wall are directly related to the cracking or deformation of the site wall. In addition, the mechanical properties of waste are different from those of conventional soil.

[0005] Currently, no relevant standards have been found that specify requirements for calculating the bulk density and lateral pressure of waste. However, based on past experience, municipal solid waste is relatively loose, with an initial bulk density of approximately 4.5 kN / m³. However, after long-term storage and compaction, the bulk density increases. According to a description of the structural design of a large-scale waste-to-energy incineration plant in the journal *Building Construction*, after a period of storage, the bottom of the waste pit often accumulates a large amount of muddy water due to poor drainage, reaching a thickness of 2-3 meters or even higher, with a bulk density reaching 10 kN / m³. 3 The above points are not relevant. Domestic standards and literature do not recommend specific values ​​for the temperature and lateral pressure of waste disposal pits. Developed countries have different waste treatment processes and lack such research. Furthermore, there are currently no methods in China for detecting real-time temperature and pressure data of waste disposal pit walls.

[0006] In terms of temperature measurement, current methods utilize infrared thermography cameras to monitor surface temperature changes in waste piles. The focus is on the temperature changes of the waste itself within the pit, typically for purposes related to waste fermentation effectiveness or safety. However, due to the unique distribution of waste and the specific stacking methods within the waste pit, significant temperature differences exist between areas, making it impossible to calculate temperature changes at various points on the pit wall from surface temperature alone. Therefore, the aforementioned methods cannot meet the needs of research on optimizing waste pit wall structures.

[0007] From a pressure perspective, without an accurate pressure data model as a reference, the lateral pressure calculation of existing waste bins can only be estimated using the at-rest earth pressure formula combined with empirical coefficients. The results may differ significantly from actual waste bin operating data, making it difficult to guarantee the rationality and economy of the main structure. Therefore, existing methods cannot meet the needs of waste bin wall structure optimization research.

[0008] Therefore, there is an urgent need for a system and method for real-time monitoring of the temperature and pressure of the garbage pit walls. Summary of the Invention

[0009] In view of the above problems, the purpose of this invention is to provide a real-time temperature and pressure monitoring system and method for waste disposal sites. Based on the characteristics of waste disposal site walls, a safe and reliable installation scheme for resistance temperature detectors (RTDs) and pressure gauges is designed. Through multi-point sampling and monitoring, real-time temperature and pressure change data of the waste disposal site walls are obtained. A data model is generated through the sampling system to monitor the temperature and pressure of the waste disposal site walls in real time, enabling real-time regulation of the waste disposal site and preventing problems such as cracking, leakage, or deformation of the site walls. This ensures normal power plant production while protecting the ecological environment.

[0010] According to one aspect of the present invention, a system is provided, comprising:

[0011] A monitoring data measurement unit is used to measure relevant data of the garbage pit wall. The monitoring data measurement unit is installed at a predetermined position on the pit wall and includes a temperature measurement unit and a pressure measurement unit.

[0012] The temperature measuring unit is used to measure the temperature data of the pool wall;

[0013] The pressure measuring unit is used to measure the pressure data of the pool wall;

[0014] An information acquisition unit is used to collect the relevant data measured by the monitoring data measurement unit and upload it to the central processing unit;

[0015] The central processing unit is used to receive the relevant data, and perform data calculations and processing on the relevant data according to preset data processing rules to generate the data change model of the pool wall.

[0016] Furthermore, a preferred configuration is that the temperature measuring unit includes a thermal resistor;

[0017] A corrosion-resistant protective sleeve is pre-embedded at the preset position, and the thermal resistor is installed inside the corrosion-resistant protective sleeve to isolate the thermal resistor from the leachate in the waste pool.

[0018] Furthermore, a preferred structure is that, inside the anti-corrosion protective sleeve, a heat-conducting material, a sealing element, and a fixing material are sequentially arranged from the end of the anti-corrosion protective sleeve near the inner side of the pool wall.

[0019] The thermal resistor is inserted entirely onto the sealing element, so that the temperature sensing area of ​​the thermal resistor is located within the thermally conductive material, and the thermal resistor is fixed by the fixing material, thereby achieving both thermal conductivity and fixation of the thermal resistor.

[0020] Furthermore, a preferred configuration is that the pressure measuring unit includes an earth pressure gauge;

[0021] A reserved groove and a conduit are provided at the preset position. The body of the earth pressure gauge is installed in the reserved groove by means of a buried pipe, and the wire of the earth pressure gauge is installed in the conduit.

[0022] Furthermore, in a preferred configuration, the earth pressure gauge body and the reserved groove are filled and fixed by a filling material;

[0023] The wires of the earth pressure gauge and the conduit are sealed with a sealing material.

[0024] Furthermore, a preferred structure includes a camera recognition system for performing camera recognition on the preset location in the monitoring system.

[0025] Furthermore, a preferred configuration is that the camera recognition system includes a camera with thermal imaging capabilities.

[0026] According to another aspect of the present invention, a method is provided, comprising:

[0027] The monitoring data measurement unit measures and summarizes relevant data of the garbage pit wall;

[0028] The relevant data, measured and summarized by the monitoring data measurement unit, is collected by the information acquisition unit and uploaded to the central processing unit;

[0029] The central processing unit receives the relevant data and performs data calculations and processing on the relevant data according to preset data processing rules to generate the data change model of the pool wall.

[0030] Furthermore, a further optimization is that the monitoring data measurement unit collects the relevant data in real time.

[0031] Furthermore, a further optimization is that the central processing unit includes a DCS system.

[0032] Furthermore, a further optimization is that the monitoring data measurement unit, the information acquisition unit, and the central processing unit transmit data via a wired connection.

[0033] By utilizing the real-time temperature and pressure monitoring system and method for waste disposal pits according to the present invention, the temperature and pressure of the pit walls can be measured in real time, ensuring that the leachate in the pit remains within the standard range. If there is a tendency to exceed the standard range, timely adjustments are made to ensure the integrity of the pit walls, thereby preventing problems such as pit wall cracking and deformation. To achieve the above and related objectives, one or more aspects of the present invention include the features that will be described in detail below and specifically pointed out in the claims. The following description and drawings detail certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the present invention is intended to include all such aspects and their equivalents. Attached Figure Description

[0034] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings and the contents of the claims, and with a more complete understanding of the invention. In the drawings:

[0035] Figure 1 A schematic diagram of the logical structure of a real-time monitoring system for temperature and pressure in a waste disposal site according to an embodiment of the present invention is shown.

[0036] Figure 2 A cross-sectional view of a corrosion-resistant protective sleeve according to an embodiment of the present invention is shown;

[0037] Figure 3 A plan view of a temperature measuring unit according to an embodiment of the present invention is shown;

[0038] Figure 4 A cross-sectional view of a temperature measuring unit according to an embodiment of the present invention is shown;

[0039] Figure 5 A cross-sectional view of the reserved groove and conduit of the diaphragm earth pressure gauge on the inner side of the pool wall according to an embodiment of the present invention is shown.

[0040] Figure 6 A cross-sectional view of the installation of a diaphragm-type earth pressure gauge on the inner side of the pool wall according to an embodiment of the present invention is shown.

[0041] Figure 7 A cross-sectional view of the reserved groove and conduit of the oil bladder earth pressure gauge on the inner side of the pool wall according to an embodiment of the present invention is shown.

[0042] Figure 8 A cross-sectional view of an oil-filled earth pressure gauge installed on the inner side of a pool wall according to an embodiment of the present invention is shown.

[0043] Figure 9 A cross-sectional view of the reserved groove for a diaphragm earth pressure gauge on the outer side of the pool wall according to an embodiment of the present invention is shown.

[0044] Figure 10 A cross-sectional view of the installation of a diaphragm-type earth pressure gauge on the outside of a pool wall according to an embodiment of the present invention is shown.

[0045] Figure 11 A cross-sectional view of the installation of an oil-filled earth pressure gauge on the outer side of the pool wall according to an embodiment of the present invention is shown.

[0046] Figure 12 A schematic diagram of a specific embodiment of a temperature measuring unit according to an embodiment of the present invention is shown;

[0047] Figure 13 A schematic diagram showing the positions of earth pressure gauges on the 8-axis and J-axis pool walls in a specific embodiment of the pressure measurement unit according to an embodiment of the present invention is shown; and,

[0048] Figure 14 A flowchart of a method for real-time monitoring of temperature and pressure in a landfill according to an embodiment of the present invention is shown.

[0049] Figure label:

[0050] 1. Resistance temperature detector (RTD); 2. Corrosion-resistant protective sleeve; 3. Thermally conductive material; 4. Sealing element; 5. Fixing material; 6. Water-stop ring; 7. Earth pressure gauge; 8. Filling material; 9. Sealing material; 10. Wire; 11. Pool wall; 12. Reserved groove; 13. Conduit; 14. Fixed base plate; 15. Fixing lock.

[0051] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0052] Currently, in the structural design of waste incineration power plants in China, the value of the waste-side pressure has a significant impact on the safety and economy of the main structure of the waste incineration power plant. Due to the significant differences in the type, density, and mechanical properties of waste at different times and locations, understanding the real-time changes in the pressure inside the waste incineration power plant wall during actual operation, and thus establishing a model of the relationship between pressure changes and material conditions, is of great importance for the structural design of the waste incineration power plant. Furthermore, since the temperature changes generated during waste fermentation also have a certain impact on the waste incineration power plant wall, understanding the temperature changes generated during waste fermentation within the power plant is also of considerable importance for the structural design of the waste incineration power plant wall.

[0053] This invention addresses the problem of monitoring the temperature effect and internal pressure of waste disposal site walls, proposing a method for monitoring these parameters. A safe and reliable installation method for resistance temperature detectors (RTDs) and pressure gauges was designed specifically for the characteristics of the waste disposal site walls. Real-time temperature and pressure changes in the waste disposal site walls were obtained through multi-point sampling monitoring, and a data model was generated using the sampling system.

[0054] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0055] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Figure 1 A schematic diagram of the logical structure of a real-time monitoring system for temperature and pressure in a waste disposal site according to an embodiment of the present invention is shown.

[0056] like Figure 1 The diagram illustrates a real-time monitoring system for temperature and pressure in a waste disposal site according to the present invention. This system includes a data measurement unit, an information acquisition unit, and a central processing unit.

[0057] The system includes a monitoring data measurement unit, which measures relevant data from the waste pit wall. This unit is positioned at a predetermined location on the pit wall 11 and includes a temperature measurement unit and a pressure measurement unit. The temperature measurement unit measures the temperature of the pit wall, and the pressure measurement unit measures the pressure of the pit wall. An information acquisition unit collects the data measured by the monitoring data measurement unit and uploads it to the central processing unit. The central processing unit receives the data and performs data calculations and processing according to preset data processing rules to generate a data change model of the pit wall.

[0058] Specifically, the central processing unit is a DCS system. The DCS system receives relevant data uploaded by the information acquisition unit. The system operators use the DCS system to generate an overall model of the temperature change or pressure change of the pool wall 11.

[0059] In actual production processes, the waste in the waste pit ferments and produces flammable and toxic gases such as methane and hydrogen sulfide. Simultaneously, the leachate produced by the waste is highly corrosive. Furthermore, considering the unique and complex environment within the waste pit, the temperature measurement unit cannot directly contact the waste for measurement. Therefore, temperature measurement of the pit wall 11 is achieved by pre-embedding a corrosion-resistant protective sleeve 2 at a predetermined location within the pit wall 11.

[0060] Figure 2 A cross-sectional view of a corrosion-resistant protective sleeve according to an embodiment of the present invention is shown; Figure 3 A plan view of a temperature measuring unit according to an embodiment of the present invention is shown; and, Figure 4 A cross-sectional view of a temperature measuring unit according to an embodiment of the present invention is shown.

[0061] like Figures 2-4 As shown in the diagram, the temperature measurement unit includes a resistance temperature detector (RTD) 1. The RTD 1 is housed within a pre-embedded anti-corrosion protective sleeve 2 located at a predetermined position on the pool wall 11. The anti-corrosion protective sleeve 2 is made of stainless steel, which isolates the RTD 1 from the corrosive effects of leachate from the waste pool. In this embodiment, the anti-corrosion protective sleeve 2 is entirely made of 316 stainless steel, which has good corrosion resistance. Under continuous temperature measurement conditions, a PT100 RTD is selected for temperature measurement.

[0062] The temperature measurement unit is specifically configured such that, inside the anti-corrosion protective sleeve 2, a heat-conducting material 3, a sealing element 4, and a fixing material 5 are sequentially arranged from the end of the anti-corrosion protective sleeve 2 near the inner side of the pool wall 11. The thermal resistor 1 is inserted entirely through the sealing element 4, so that the temperature sensing area of ​​the thermal resistor 1 is located inside the heat-conducting material 3, and the thermal resistor 1 is fixed by the fixing material 5, thereby achieving both heat conduction and fixation of the thermal resistor 1.

[0063] Specifically, the heat-conducting material 3 is thermal grease, the sealing element 4 is a rubber ball, and the fixing material 5 is polyurethane foam. The specific operation method is as follows: The anti-corrosion protective sleeve 2 is pre-positioned at a predetermined location on the pool wall 11. A correspondingly sized water-stop ring 6 is installed on the anti-corrosion protective sleeve 2 to prevent leachate from entering the pool wall 11 through the gap between the predetermined location and the anti-corrosion protective sleeve 2, thus preventing cracking, seepage, or deformation of the pool wall 11. First, the thermal grease 3 is filled into the end of the anti-corrosion protective sleeve 2 near the inner side of the pool wall 11, taking care not to create air bubbles. It is best to apply the thermal grease to the end of the anti-corrosion protective sleeve 2 during the injection process. Then, the thermal resistor 1 is passed through the rubber ball 4 used for fixing and sealing. The thermal resistor 1 and the rubber ball 4 are inserted as a single unit into the anti-corrosion protective sleeve 2, ensuring that the temperature sensing area of ​​the thermal resistor 1 is completely within the thermal grease 3. Finally, the thermal resistor 1 and the anti-corrosion protective sleeve 2 are made parallel to each other and fixed with polyurethane foam 5.

[0064] To determine the temperature changes of the entire waste pit wall 11, given the characteristics of the material accumulation within the waste pit, multiple preset locations need to be selected for multi-point temperature measurement, taking into account the actual length and height of the pit wall. The temperature signals are then transmitted in real-time to the information acquisition unit, and subsequently communicated to the DCS system. The DCS system operator station then generates an overall model of the pit wall temperature changes.

[0065] Figure 5A cross-sectional view of the reserved groove and conduit of the diaphragm earth pressure gauge on the inner side of the pool wall according to an embodiment of the present invention is shown. Figure 6 A cross-sectional view of the installation of a diaphragm-type earth pressure gauge on the inner side of the pool wall according to an embodiment of the present invention is shown. Figure 7 A cross-sectional view of the reserved groove and conduit for an oil-filled earth pressure gauge on the inner side of the pool wall according to an embodiment of the present invention is shown; and, Figure 8 A cross-sectional view of an oil-filled earth pressure gauge installed on the inner side of a pool wall according to an embodiment of the present invention is shown.

[0066] like Figures 5-8 As shown in the diagram, the pressure measurement unit specifically includes a soil pressure gauge 7. A pre-reserved groove 12 and a conduit 13 are provided at a predetermined position on the wall 11 of the waste pit. The conduit 13 is pre-embedded and connected to the pre-reserved groove 12. The body of the soil pressure gauge 7 is located inside the pre-reserved groove 12, and the wire 10 of the soil pressure gauge 7 is located inside the conduit 13. The body of the soil pressure gauge 7 and the pre-reserved groove 12 are filled and fixed by a filling material 8, and the wire 10 of the soil pressure gauge 7 and the conduit 13 are sealed by a sealing material 9.

[0067] Specifically, the earth pressure gauge 7 includes a diaphragm earth pressure gauge and an oil bladder earth pressure gauge. The filling material 8 is epoxy putty, and the sealing material 9 is polyurethane foam. The specific operation method is as follows: the guide pipe 13 is pre-embedded in the predetermined position of the pool wall 11, and a water-stop ring 6 of corresponding size is set on the guide pipe 13 to prevent leachate in the garbage pool from entering the pool wall 11 through the gap between the predetermined position and the guide pipe 13.

[0068] The method for fixing the diaphragm-type earth pressure gauge is as follows: First, apply epoxy putty 8 to the side and bottom walls of the reserved groove 12. Then, place the diaphragm-type earth pressure gauge 7 into the reserved groove 12, and fill the gap between the diaphragm-type earth pressure gauge 7 and the reserved groove 12 with epoxy putty 8. Epoxy putty 8 also serves to fix the diaphragm-type earth pressure gauge 7 in place. Finally, place the wire 10 of the diaphragm-type earth pressure gauge 7 inside the conduit 13 and seal it with polyurethane foam.

[0069] The method for fixing the bladder-type earth pressure gauge is as follows: First, a fixing base plate 14 is fixedly installed on the side wall of the reserved groove 12, and epoxy putty 8 is applied to the reserved groove 12 and the bottom wall. Then, the bladder-type earth pressure gauge 7 is placed in the reserved groove 12, and the gap between the earth pressure gauge 7 and the reserved groove 12 is filled with epoxy putty 8, which also serves to fix the bladder-type earth pressure gauge 7. Next, the holes of the fixing locking member 15 are aligned with the holes on the fixing base plate 14, and then the bladder is fixed by screwing bolts through the fixing locking member 15 into the fixing base plate 14. During fixing, care should be taken that the fixing locking member 15 should not directly contact the bladder to prevent the fixing locking member 15 from squeezing the bladder and affecting the accuracy of the bladder-type earth pressure gauge. Finally, the wire 10 of the bladder-type earth pressure gauge 7 is placed in the conduit 13 and sealed with polyurethane foam.

[0070] It is important to note that anti-corrosion coating should be applied to the surface of the fixed base plate 14 and the surface of the fixed locking component 15 to ensure that the oil bladder earth pressure gauge can be fixed stably for a long time.

[0071] More specifically, the oil bladder earth pressure gauge 7 is installed by fixing the oil bladder to the reserved groove 12 with a pressure plate and using epoxy putty for fixation. The pressure sensing element is placed at the pre-embedded sleeve behind the oil bladder. In this embodiment, a resistance strain gauge earth pressure gauge and a vibrating wire earth pressure gauge are used as pressure sensing elements.

[0072] Figure 9 A cross-sectional view of the reserved groove 12 of the diaphragm earth pressure gauge on the outer side of the pool wall according to an embodiment of the present invention is shown. Figure 10 A cross-sectional view of a diaphragm-type earth pressure gauge installed on the outer side of a pool wall according to an embodiment of the present invention is shown; and, Figure 11 A cross-sectional view of an oil-filled earth pressure gauge installed on the outer side of a pool wall according to an embodiment of the present invention is shown. Figures 9-11 The diagram shown is a schematic of the fixing of the earth pressure gauge 7 on the outside of the garbage pit wall 11.

[0073] Specifically, based on the characteristics of the waste pile within the waste pit, the lateral pressure on the pit wall is typically lower at higher points, making it difficult to achieve the required measurement accuracy using a vibrating wire earth pressure gauge. Therefore, installing a resistance strain gauge earth pressure gauge as the pressure-sensing element at higher points in the waste pit can significantly improve measurement accuracy. The fixing of the earth pressure gauge 7 on the outside of the pit wall 11 differs from that on the inside. It does not require the use of a conduit 13; the earth pressure gauge 7 is directly fixed using the filling material 8. The wire 10 of the earth pressure gauge 7 is located on the outside of the pit wall 11 and fixed using the filling material 8, making installation more convenient. The fixing methods for both types of earth pressure gauges 7 are consistent; please refer to the attached diagram for details. Figure 11 and Figure 12 This will not be elaborated upon here.

[0074] In this embodiment, the pressure on the walls 11 of the waste pit is measured using different types of earth pressure gauges 7. Simultaneously, considering the characteristics of the material piled within the waste pit, and to study the lateral pressure changes across the entire pit wall, multiple preset locations are selected for multi-point pressure measurement, taking into account the actual length and height of the pit wall 11. The pressure data is then transmitted in real-time to the information acquisition unit, and subsequently communicated to the DCS system. The DCS system operator station then generates an overall model of the pit wall pressure changes.

[0075] It also includes a camera recognition system, used to perform camera recognition on preset locations in the monitoring system.

[0076] In practical applications, the earth pressure gauge 7 may experience zero-point drift during use, which often affects the measurement results after a period of use. Therefore, in this embodiment, a camera is installed inside the waste bin. The camera can cover the installation positions of each earth pressure gauge 7 installed on the inner wall of the waste bin. Using the camera's image recognition technology, when a point of earth pressure gauge 7 marked with a special color is identified, that is, when the earth pressure gauge 7 is not covered by waste, the earth pressure gauge 7 at that point is zeroed. This can greatly ensure the measurement accuracy of the earth pressure gauge 7.

[0077] Specifically, the camera recognition system includes a camera with thermal imaging capabilities. In order to detect temperature changes on the surface of the waste, a camera with thermal imaging capabilities was selected in this embodiment. This allows a single device to solve the zero-point drift problem of the earth pressure gauge 7 and to detect the surface temperature of the waste. The waste surface temperature data can be used as reference data for the temperature of the waste pool wall.

[0078] Figure 14 A flowchart of a method for real-time monitoring of temperature and pressure in a landfill according to an embodiment of the present invention is shown.

[0079] In another aspect of the present invention, a method for real-time monitoring of temperature and pressure in a waste disposal site is provided, which utilizes a real-time monitoring system for temperature and pressure in the waste disposal site to detect the temperature and pressure, such as... Figure 14 As shown, it includes:

[0080] The monitoring data measurement unit measures and summarizes relevant data of the garbage pit wall;

[0081] In detail, multiple preset monitoring positions are set on the pool wall 11 of the garbage pit, and corresponding monitoring devices are set at the preset positions on the pool wall 11. These devices can be temperature monitoring devices, pressure monitoring devices, or other monitoring devices. The circuits of the monitoring devices are connected to the information acquisition units.

[0082] The monitoring data is collected by the information collection unit, the relevant data is measured and summarized by the measurement unit, and then uploaded to the central processing unit.

[0083] The information acquisition unit collects temperature or pressure data in real time and uploads it to the central processing unit via wireless network or computer cable.

[0084] The central processing unit receives relevant data and performs data calculations and processing on the relevant data according to preset data processing rules to generate a data change model of the pool wall.

[0085] Specifically, the monitoring data measurement unit collects relevant data in real time.

[0086] Specifically, the central processing unit includes the DCS system.

[0087] Specifically, the monitoring data measurement unit, information acquisition unit, and central processing unit transmit data via wired connections. Of course, in this method, wired transmission can be achieved through computer cables, or wireless transmission can be used, including wireless network transmission.

[0088] In the method of this invention, several types of earth pressure gauges were designed to test their effectiveness in measuring pressure on the walls of waste pits. Simultaneously, considering the characteristics of the material piled within the waste pit, and to study the lateral pressure changes across the entire pit wall, multiple characteristic points were selected for multi-point pressure measurement, taking into account the actual length and height of the pit wall. The pressure data was transmitted in real-time to the information acquisition system, and then communicated to the DCS system. The DCS system operator station then generated an overall model of the pit wall pressure changes.

[0089] The following examples illustrate... Figure 12 A schematic diagram of a specific embodiment of a temperature measuring unit according to an embodiment of the present invention is shown; and, Figure 13 A schematic diagram showing the positions of earth pressure gauges on the 8-axis and J-axis pool walls in a specific embodiment of the pressure measurement unit according to an embodiment of the present invention is provided below. The present invention will be further described below.

[0090] like Figure 12 As shown, a total of 9 pre-embedded temperature measurement points are set up, numbered TE-1 to TE-9 in the figure, and are distributed at different heights and along different axes of the pool wall.

[0091] Specifically, temperature testing points are set at different heights on the pool wall 11 of the waste pit. In this embodiment, there are three thickness structures: 300mm, 450mm, and 600mm respectively, viewed from top to bottom. Based on this characteristic, temperature testing points are selected and distributed across the different thicknesses of the pool wall 11, thereby generating a representative temperature curve model for use.

[0092] like Figure 13As shown, a total of 36 pre-embedded pressure measuring points are set up, of which NYZ1~NYZ8 are oil-filled vibrating wire earth pressure gauges, NYZ9~NYZ13 and NYD1~NYD5 are oil-filled resistance strain gauge earth pressure gauges, and NWZ14~NWZ26 and WWZ27~29 are diaphragm earth pressure gauges, which are distributed at different heights and different axial positions on the pool wall.

[0093] Among them, the circle in the figure Represents the building's axis number. arrive ⑦ and ⑧ are the vertical axes in the architectural plan, and ⑦ and ⑧ are the horizontal axes in the architectural plan.

[0094] Nine resistance temperature detectors (RTDs) are directly connected to the temperature information acquisition unit via computer cables, and 36 pressure measurement points are directly connected to the pressure information acquisition unit via computer cables. The information acquisition unit transmits data to the DCS system cabinet in real time via wireless communication. The thermal imaging camera signal is connected to the video management host, which processes the image to obtain waste temperature data. This temperature data is then transmitted to the DCS system cabinet via communication cables. An overall model of the pool wall temperature and pressure is generated at the DCS system operator station. When the camera detects that a pressure gauge is not covered by waste, it sends a zeroing signal for that pressure point to the pressure information acquisition unit via the DCS.

[0095] Based on the above description, the real-time monitoring system and method for temperature and pressure in waste disposal sites of the present invention has at least the following advantages:

[0096] 1. By using pre-embedded sleeves on the walls of the waste pit for temperature measurement, the temperature conduction effect is effectively increased. In addition, by setting thermal resistors at different coordinates for temperature measurement, a comprehensive temperature model is formed, which helps technicians analyze the conditions inside the waste pit. Wrapping the thermal resistors with heat-conducting material can ensure the accuracy of the thermal resistor temperature measurement. Furthermore, the water stop ring design set on the pre-embedded sleeve can effectively prevent the leakage of leachate in the waste pit, protect the pit walls from leachate corrosion, and increase the service life of the waste pit.

[0097] 2. In this method, the pressure detection method involves several soil pressure gauges of different specifications and methods. The pressure is measured by setting a reserved groove and a guide tube on the wall of the garbage pit. In this embodiment, a diaphragm soil pressure gauge and an oil bladder soil pressure gauge are used. By measuring the pressure of the pit wall with soil pressure gauges with different working principles, the accuracy of the measurement can be effectively guaranteed. In addition, a water-stop ring is set on the outside of the guide tube to ensure the sealing of the pit wall and prevent corrosive liquid from entering the gaps in the pit wall, which could cause cracking, deformation and other problems in the pit wall.

[0098] 3. In this method, temperature and pressure are measured at multiple points to ensure that the entire interior of the waste pit is within the test range, guaranteeing multi-angle and all-round measurement of the waste pit. Furthermore, vibrating wire and resistance strain gauge earth pressure gauges are installed at different heights according to the characteristics of the waste pit's material accumulation, making the measurement data more accurate.

[0099] 4. In this method, by adding a camera recognition system, it is convenient to observe the condition of garbage on the outer surface of the garbage pit. On the other hand, considering the zero drift problem of the pressure gauge, the camera recognition system is used to zero the reading of the earth pressure gauge to ensure the accuracy of pressure measurement.

[0100] 5. In this method, a thermal imaging camera can be used to monitor the surface temperature of the waste and serve as a reference for the temperature measurement unit to measure the temperature.

[0101] 6. In this method, a complete real-time temperature and pressure acquisition system is formed by the monitoring system, information acquisition unit and central processing unit. The temperature and pressure signals are communicated to the DCS system through the information acquisition unit. The DCS system generates an overall data model of the pool wall temperature and pressure, which facilitates understanding of the internal conditions of the entire waste pool and timely issuance of operation instructions. Waste treatment is carried out within the capacity of the waste pool, ensuring the service life of the waste pool and ensuring that the pool wall does not crack or deform.

[0102] 7. In this method, through experimental research on the effects of temperature and lateral pressure on the waste pit wall, an accurate data model of the effects of temperature and lateral pressure on the waste pit wall is established, providing a data foundation for the subsequent precise design of the waste pit wall (saving engineering costs and ensuring that the structure has an appropriate level of safety).

[0103] The real-time monitoring system and method for temperature and pressure of landfills according to the present invention have been described above by way of example. However, those skilled in the art should understand that various modifications can be made to the real-time monitoring system and method for temperature and pressure of landfills according to the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A real-time monitoring system for temperature and pressure in a waste disposal site, comprising: A monitoring data measurement unit is used to measure relevant data of the garbage pit wall. The monitoring data measurement unit is installed at a predetermined position on the pit wall. The monitoring data measurement unit includes a temperature measurement unit and a pressure measurement unit, and the pressure measurement unit includes a soil pressure gauge. The temperature measuring unit is a resistance temperature detector (RTD) used to measure the temperature data of the pool wall. A corrosion-resistant protective sleeve is pre-embedded at the preset position, and the RTD is placed inside the sleeve to isolate it from the corrosion of leachate in the waste pool. Inside the RTD, a heat-conducting material, a sealing element, and a fixing material are sequentially arranged from the end of the sleeve near the inner side of the pool wall. The RTD is then placed entirely on the sealing element, so that the temperature sensing area of ​​the RTD is located within the heat-conducting material, and the RTD is fixed by the fixing material, thus achieving both heat conduction and fixation. The camera recognition system is used to perform camera recognition on the preset locations in the monitoring system; when a soil pressure gauge point marked with a special color is identified, that is, when the soil pressure gauge is not covered by garbage, the soil pressure gauge at that point is zeroed. The pressure measuring unit is used to measure the pressure data of the pool wall; An information acquisition unit is used to collect the relevant data measured by the monitoring data measurement unit and upload it to the central processing unit; The central processing unit is used to receive the relevant data, and perform data calculations and processing on the relevant data according to preset data processing rules to generate the data change model of the pool wall.

2. The real-time monitoring system for temperature and pressure of a waste disposal site as described in claim 1, characterized in that, A reserved groove and a conduit are provided at the preset position. The body of the earth pressure gauge is installed in the reserved groove by means of a buried pipe, and the wire of the earth pressure gauge is installed in the conduit.

3. The real-time monitoring system for temperature and pressure of a waste disposal site as described in claim 2, characterized in that, The earth pressure gauge body and the reserved groove are filled and fixed by a filling material; The wires of the earth pressure gauge and the conduit are sealed with a sealing material.

4. A method for real-time monitoring of temperature and pressure in a waste disposal site, comprising using the real-time monitoring system for temperature and pressure in a waste disposal site as described in any one of claims 1-3 to monitor the temperature of the waste disposal site, characterized in that, Includes the following steps: The monitoring data measurement unit measures and summarizes relevant data of the garbage pit wall; The relevant data, measured and summarized by the monitoring data measurement unit, is collected by the information acquisition unit and uploaded to the central processing unit; The central processing unit receives the relevant data and performs data calculations and processing on the relevant data according to preset data processing rules to generate the data change model of the pool wall.

5. The method for real-time monitoring of temperature and pressure in a waste disposal site as described in claim 4, wherein, The monitoring data measurement unit collects the relevant data in real time.

6. The method for real-time monitoring of temperature and pressure in a waste disposal site as described in claim 4, wherein, The central processing unit includes a DCS system.

7. The method for real-time monitoring of temperature and pressure in a waste disposal site as described in claim 4, wherein, The monitoring data measurement unit, the information acquisition unit, and the central processing unit transmit data via wired connection.

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