Underground cavern sump liquid level linkage type pumping control device

Abstract

The application discloses a kind of underground cavern catch basin liquid level linkage type pumping control device, it is related to underground cavern drainage technical field, including multiple catchment areas, adjusting assembly, displacement meter, water flow monitor, pumping device, sewage treatment device, collection barrel and control system;Adjusting assembly is flexibly adjusted displacement meter position by electric telescopic link and guide structure, control system is based on Zigbee wireless transmission and realizes multichannel data acquisition, and host computer is controlled pumping device start by liquid level signal detected by displacement meter, and sewage treatment device is linked and started by water flow monitor signal control, simultaneously with displacement meter self-checking mechanism.This device can significantly improve liquid level detection accuracy and device operation reliability, realize pumping and sewage treatment efficient cooperation, applicable to tunnel, underground powerhouse, mine roadway and the water treatment of various underground cavern catch pit.

Description

Technical Field

[0001] This utility model relates to the field of underground cavern drainage technology, specifically to an underground cavern sump level linkage pumping control device. Background Technology

[0002] In the construction and operation of underground caverns (such as tunnels, underground powerhouses, and mine roadways), the drainage of accumulated water from sump pits is a crucial step in maintaining the normal function of the cavern. Existing technologies suffer from the following core problems:

[0003] Traditional liquid level detection elements (such as fixed float switches and fixed displacement gauges) have non-adjustable installation positions, making them unsuitable for sump pits of different depths or unable to adjust the detection benchmark according to the rate of water accumulation in the sump pit. This can easily lead to detection errors—either the liquid level is too high and not pumped out in time, causing potential water accumulation, or the liquid level is too low and the pumping device is mistakenly activated, resulting in energy waste.

[0004] Liquid level detection relies on core components such as displacement gauges, but existing devices lack a self-checking mechanism. When the displacement gauge malfunctions due to dampness, vibration, or other environmental factors in the underground cavern, the device cannot detect it in time, easily leading to problems such as "the faulty displacement gauge shows a low liquid level → water accumulation" or "the displayed liquid level is too high → ineffective pumping," which seriously affects the reliability of pumping. Utility Model Content

[0005] To address the aforementioned technical problems, this application solves the problem that traditional liquid level detection elements (such as fixed float switches and fixed displacement gauges) have non-adjustable installation positions, cannot be adapted to sump pits of different depths, or cannot adjust the detection benchmark according to the rate of water accumulation in the sump pit, which easily leads to detection deviations.

[0006] To achieve the above objectives, the technical solution adopted in this application is: a liquid level linkage pumping control device for underground cavern sump, including a water collection area, an adjustment component, a displacement meter, a water flow monitor, a pumping device, a sewage treatment device, a collection tank, a power supply, and a control system.

[0007] The power supply provides power to the entire pumping control device;

[0008] The water collection area is multiple, and the input end of one of the pumping devices is connected to one of the water collection areas through a first pipe. The sewage treatment device has multiple input ends, and each input end of the sewage treatment device is connected to the output end of the pumping device through a second pipe. The sewage treatment device is located above the collection tank, and the output end of the sewage treatment device is connected to the collection tank. Each water collection area has a displacement meter installed through an adjustment component, and each of the second pipes has a water flow monitoring instrument.

[0009] The control system includes a multi-channel data acquisition unit, a Zigbee wireless transmission module, a Zigbee router, a Zigbee coordinator, and a host computer. Multiple displacement gauges are located in the middle section of different water collection areas. Each displacement gauge has a displacement output terminal at its top. Multiple displacement output terminals and multiple water flow monitors are electrically connected to the multi-channel data acquisition unit. The multi-channel data acquisition unit is connected to the Zigbee wireless transmission module via an RS485 bus. The Zigbee wireless transmission module establishes a wireless connection with the Zigbee router via the Zigbee protocol. The Zigbee router establishes a wireless connection with the Zigbee coordinator via the Zigbee protocol. The Zigbee coordinator is electrically connected to the host computer via an RS232 / 485 interface.

[0010] The adjustment assembly includes a support plate installed at one edge of the top opening of the water collection area. Vertically arranged guide strips are fixedly installed on the inner wall of the water collection area below the support plate. A support frame is provided on the upper surface of the support plate. A through hole is opened on the upper surface of the support plate directly below the middle of the support frame. An electric telescopic rod is provided on the bottom surface of the middle of the support frame. The telescopic end of the electric telescopic rod passes through the through hole and extends to the middle height area inside the water collection area. A clamp is provided on the telescopic end of the electric telescopic rod. A guide block is provided on the side of the clamp near the guide strip. The guide block is slidably connected to the guide strip. The displacement gauge is sleeved inside the clamp.

[0011] The host computer receives the first displacement information collected by the input terminal of the displacement meter, converts the first displacement information into a first displacement value, compares it with the first displacement threshold preset in the host computer, and when the first displacement value is greater than the preset first displacement threshold, the host computer sends a first control signal to control the pumping device to operate, so that the accumulated water in the water collection area is pumped into the sewage treatment device.

[0012] The host computer receives the flow signal collected by the water flow monitor and converts the flow signal into a flow value. It compares the flow value with the flow threshold preset in the host computer. When the flow value is greater than the preset flow threshold, the host computer sends a second control signal to control the sewage treatment device to start and treat the sewage.

[0013] To better realize this utility model, the guide bar is further provided as a vertical guide rail, and the side wall of the vertical guide rail is provided with a guide groove, and the guide block is embedded in the guide groove and slides in cooperation with the guide groove.

[0014] To better realize this utility model, the water pumping device is further defined as a water pump, and the host computer is a PLC.

[0015] To better realize this utility model, the electric telescopic rod is further described as an electric push rod, with the fixed end of the electric push rod fixedly connected to the bottom surface of the middle part of the support frame, and the telescopic end of the electric push rod fixedly connected to the upper side of the clamp.

[0016] To better realize this utility model, the RS485 bus between the multi-channel data acquisition instrument and the Zigbee wireless transparent transmission module is a shielded RS485 bus, and the outer layer of the shielded RS485 bus is wrapped with a metal shielding mesh.

[0017] To better realize this utility model, before the host computer compares the first displacement value with the preset first displacement threshold, the host computer sends a third control signal to control the electric telescopic rod to move, driving the clamp, guide block and displacement gauge to move vertically upward along the guide direction of the guide bar, and stop at positions 100mm and 200mm above the middle height area inside the water collection area respectively.

[0018] The displacement meter input terminal collects displacement information at the above-mentioned 100mm and 200mm positions, namely the second displacement information and the third displacement information, and transmits them to the host computer.

[0019] The host computer receives the second displacement information and the third displacement information, and converts them into the second displacement value and the third displacement value respectively. The host computer has a preset relative allowable error range of ±2mm, a second displacement threshold of 98mm-202mm, and a third displacement threshold of 198mm-302mm. At the same time, the difference between the third displacement threshold and the second displacement threshold is preset to be 98mm-202mm.

[0020] The host computer compares the second displacement value with the second displacement threshold, the third displacement value with the third displacement threshold, and the difference between the third displacement value and the second displacement value with the difference between the third displacement threshold and the second displacement threshold. When all three conditions are met simultaneously: "the second displacement value is within the range of 98mm-202mm", "the third displacement value is within the range of 198mm-302mm", and "the difference between the third displacement value and the second displacement value is within the range of 98mm-202mm", the corresponding displacement meter is determined to be normal.

[0021] If any of the above conditions are not met, the displacement gauge is determined to be abnormal, and the host computer sends a fourth control signal to control the alarm to sound.

[0022] To better realize this utility model, the alarm is further described as an audible and visual alarm, which is electrically connected to the host computer.

[0023] To better realize this utility model, the output end of the sewage treatment device is further connected to the collection tank through a guide pipe, and a shut-off valve is provided on the guide pipe, which is connected to the host computer.

[0024] In automatic control, when the sewage treatment device is turned on, the host computer starts the first timer. After the first timer is completed, the host computer controls the shut-off valve to open. When the shut-off valve is opened, the host computer starts the second timer. After the second timer is completed, the host computer controls the shut-off valve to close.

[0025] Alternatively, in manual control mode, the shut-off valve can be manually opened / closed by the operator.

[0026] To better realize this utility model, the power supply is further described as an industrial-grade switching power supply or a rechargeable lithium battery pack.

[0027] When a rechargeable lithium battery pack is used, the pumping control device further includes a charging module, which is electrically connected to the rechargeable lithium battery pack and is used to replenish the rechargeable lithium battery pack with power.

[0028] To better realize this utility model, the extraction control device further includes multiple stress gauges at the anchor bolt locations, and the stress gauges are electrically connected to the multi-channel data acquisition instrument.

[0029] The host computer receives the stress signal collected by the water flow monitor and converts the stress signal into a stress value. It then compares the stress value with a pre-set stress threshold in the host computer. When the stress value is greater than the pre-set stress threshold, the host computer issues an alarm control signal.

[0030] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0031] 1. In this utility model, the adjustment component includes an electric telescopic rod, a support frame, a clamp, and a vertical guide strip (with guide groove) on the side wall of the water collection area and a guide block (sliding fit) of the clamp; the host computer controls the extension and retraction of the electric telescopic rod, which drives the displacement gauge in the clamp to move vertically along the guide strip, flexibly adjusting the detection position; it is suitable for underground cavern water collection pits of different depths, or adjusts the liquid level detection benchmark according to the rate of water accumulation; it avoids deviations caused by fixed detection positions, solves the problems of "water accumulation without pumping" or "wasteful empty pumping", and improves the liquid level detection accuracy by more than 30%.

[0032] 2. In this utility model, the host computer controls the electric telescopic rod to move the displacement gauge to two positions: "middle section height + 100mm" and "middle section height + 200mm". The displacement data is collected and compared with the preset threshold (including the difference threshold). The displacement gauge measurement accuracy and working status are automatically detected to determine whether the component is normal. Faults caused by moisture and vibration of the displacement gauge are detected in time to avoid false control caused by faulty components. The potential for water accumulation or ineffective pumping caused by component failure is reduced, the failure rate of the device is reduced by 40%, and the frequency and cost of manual inspection are reduced.

[0033] 3. In this utility model, the host computer controls the pumping device to start via a displacement meter signal and controls the sewage treatment device to start via a water flow monitoring instrument signal. The output shut-off valve of the sewage treatment device supports "timed automatic switch / manual control". This achieves the linkage operation of "water extraction → sewage transportation → sewage treatment" to avoid disconnection between links. It prevents the sewage treatment device from starting after the pumping device starts, which would cause sewage to stagnate or the sewage treatment device to run idle and waste energy. The sewage treatment efficiency is increased by 50%, avoiding sewage stagnation and pollution of the cavern environment. At the same time, it takes into account the convenience of automatic control and the flexibility of manual emergency response.

[0034] 4. In this utility model, the control system adopts "multi-channel data acquisition instrument + Zigbee wireless transparent transmission module + Zigbee router + Zigbee coordinator", and the data acquisition instrument and Zigbee module adopt a shielded RS485 bus; to realize wireless transmission of data from displacement gauge and water flow monitoring instrument, the shielded bus reduces electromagnetic interference; to avoid complex wiring in underground caverns (such as the difficulty and susceptibility to damage of long-distance cavern cable laying), and to reduce the impact of electromagnetic interference on data transmission; the installation period is shortened by 40%, the data transmission stability is improved by 25%, and it is suitable for the complex wiring environment of underground caverns. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a flowchart of the control system in this utility model;

[0037] Figure 2 This is a perspective view of the adjustment component in this utility model;

[0038] Figure 3 This is a schematic diagram showing the cooperation of the supporting cross plate, the electric telescopic rod, and the displacement gauge in this utility model;

[0039] Figure 4 This is a schematic diagram showing the cooperation between the clamp, displacement gauge, and guide strip in this utility model;

[0040] Figure 5 This is a schematic diagram showing the cooperation between the electric telescopic rod and the clamp in this utility model.

[0041] Explanation of reference numerals in the attached drawings: 101-Water collection area; 102-Supporting horizontal plate; 103-Supporting frame; 104-Electric telescopic rod; 105-Clamp; 106-Guide block; 107-Displacement gauge; 108-Displacement output end; 109-Guide strip. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0047] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] Example 1

[0049] like Figures 1 to 5 As shown, an underground cavern water sump level linkage pumping control device includes a water collection area 101, an adjustment component, a displacement meter 107, a water flow monitor, a pumping device, a sewage treatment device, a collection tank, a power supply, and a control system.

[0050] The power supply provides power to the entire pumping control device;

[0051] There are multiple water collection areas 101. The input end of one of the pumping devices is connected to one of the water collection areas 101 through a first pipe. The sewage treatment device has multiple input ends. Each input end of the sewage treatment device is connected to the output end of the pumping device through a second pipe. The sewage treatment device is located above the collection tank, and the output end of the sewage treatment device is connected to the collection tank. Each water collection area 101 is equipped with a displacement meter 107 through an adjustment component, and each of the second pipes is equipped with a water flow monitoring instrument.

[0052] The control system includes a multi-channel data acquisition unit, a Zigbee wireless transmission module, a Zigbee router, a Zigbee coordinator, and a host computer. Multiple displacement gauges 107 are located in the middle height region within different water collection areas 101. Each displacement gauge 107 has a displacement output terminal 108 at its top. Multiple displacement output terminals 108 and multiple water flow monitors are electrically connected to the multi-channel data acquisition unit. The multi-channel data acquisition unit is connected to the Zigbee wireless transmission module via an RS485 bus. The Zigbee wireless transmission module establishes a wireless connection with the Zigbee router via the Zigbee protocol. The Zigbee router establishes a wireless connection with the Zigbee coordinator via the Zigbee protocol. The Zigbee coordinator is electrically connected to the host computer via an RS232 / 485 interface.

[0053] The adjustment assembly includes a support plate 102, which is installed at one edge of the top opening of the water collection area 101. A vertically arranged guide bar 109 is fixedly installed on the inner wall of the water collection area 101 below the support plate 102. A support frame 103 is provided on the upper surface of the support plate 102. A through hole is opened on the upper surface of the support plate 102 directly below the middle of the support frame 103. An electric telescopic rod 104 is provided on the bottom surface of the middle of the support frame 103. The telescopic end of the electric telescopic rod 104 passes through the through hole and extends to the middle height area inside the water collection area 101. A clamp 105 is provided on the telescopic end of the electric telescopic rod 104. A guide block 106 is provided on the side of the clamp 105 near the guide bar 109. The guide block 106 is slidably connected to the guide bar 109. The displacement gauge 107 is sleeved inside the clamp 105.

[0054] The host computer receives the first displacement information collected by the input terminal of the displacement meter 107, converts the first displacement information into a first displacement value, compares it with the first displacement threshold preset in the host computer, and when the first displacement value is greater than the preset first displacement threshold, the host computer sends a first control signal to control the pumping device to operate, so that the accumulated water in the water collection area 101 is pumped into the sewage treatment device.

[0055] The host computer receives the flow signal collected by the water flow monitor and converts the flow signal into a flow value. It compares the flow value with the flow threshold preset in the host computer. When the flow value is greater than the preset flow threshold, the host computer sends a second control signal to control the sewage treatment device to start and treat the sewage.

[0056] like Figures 1 to 5As shown, in this embodiment, the guide bar 109 is a vertical guide rail, and the side wall of the vertical guide rail is provided with a guide groove. The guide block 106 is embedded in the guide groove and slides in cooperation with the guide groove.

[0057] like Figures 1 to 5 As shown, in this embodiment, the pumping device is a water pump, and the host computer is a PLC (Programmable Logic Controller).

[0058] like Figures 1 to 5 As shown, in this embodiment, the electric telescopic rod 104 is an electric push rod. The fixed end of the electric push rod is fixedly connected to the bottom surface of the middle part of the support frame 103, and the telescopic end of the electric push rod is fixedly connected to the top surface of the clamp 105.

[0059] like Figures 1 to 5 As shown in this embodiment, the RS485 bus between the multi-channel data acquisition instrument and the Zigbee wireless transparent transmission module is a shielded RS485 bus, and the outer layer of the shielded RS485 bus is wrapped with a metal shielding mesh.

[0060] like Figures 1 to 5 As shown, in this embodiment, before the host computer compares the first displacement value with the preset first displacement threshold, the host computer sends a third control signal to control the electric telescopic rod 104 to move, causing the clamp 105, guide block 106 and displacement meter 107 to move vertically upward along the guide direction of guide bar 109, and stop at positions 100mm and 200mm above the middle height area inside the water collection area 101 respectively.

[0061] The input terminal of the displacement gauge 107 collects displacement information at the above-mentioned 100mm position and 200mm position respectively, namely the second displacement information and the third displacement information, and transmits them to the host computer.

[0062] The host computer receives the second displacement information and the third displacement information, and converts them into the second displacement value and the third displacement value respectively. The host computer has a preset relative allowable error range of ±2mm, a second displacement threshold of 98mm-202mm, and a third displacement threshold of 198mm-302mm. At the same time, the difference between the third displacement threshold and the second displacement threshold is preset to be 98mm-202mm.

[0063] The host computer compares the second displacement value with the second displacement threshold, the third displacement value with the third displacement threshold, and the difference between the third displacement value and the second displacement value with the difference between the third displacement threshold and the second displacement threshold. When all three conditions are met simultaneously: "the second displacement value is within the range of 98mm-202mm", "the third displacement value is within the range of 198mm-302mm", and "the difference between the third displacement value and the second displacement value is within the range of 98mm-202mm", the corresponding displacement gauge 107 is determined to be normal.

[0064] If any of the above conditions are not met, the displacement gauge 107 is determined to be abnormal, and the host computer sends a fourth control signal to control the alarm to sound.

[0065] like Figures 1 to 5 As shown in this embodiment, the alarm is an audible and visual alarm, which is electrically connected to the host computer.

[0066] like Figures 1 to 5 As shown, in this embodiment, the output end of the sewage treatment device is connected to the collection tank through a guide pipe, and a shut-off valve is installed on the guide pipe. The shut-off valve is electrically connected to the host computer.

[0067] In automatic control, when the sewage treatment device is turned on, the host computer starts the first timer. After the first timer is completed, the host computer controls the shut-off valve to open. When the shut-off valve is opened, the host computer starts the second timer. After the second timer is completed, the host computer controls the shut-off valve to close.

[0068] Alternatively, in manual control mode, the shut-off valve can be manually opened / closed by the operator.

[0069] like Figures 1 to 5 As shown, in this embodiment, the power source is an industrial-grade switching power supply or a rechargeable lithium battery pack.

[0070] When a rechargeable lithium battery pack is used, the pumping control device further includes a charging module, which is electrically connected to the rechargeable lithium battery pack and is used to replenish the rechargeable lithium battery pack with power.

[0071] The water pump model is "ISG50-160", the displacement gauge accuracy is "±0.1mm", the first displacement threshold is set to "150mm", the Zigbee module model is "CC2530", and the charging module input voltage is "220V AC".

[0072] Working principle:

[0073] 1. Initialization and displacement gauge self-test (ensuring detection reliability)

[0074] Power supply startup: The power supply provides power to the entire device—if it is an industrial-grade switching power supply, it is directly connected to the mains power in the underground cavern; if it is a rechargeable lithium battery pack, the power supply is guaranteed through a charging module (mains power or solar photovoltaic panel supplement).

[0075] Position adjustment: The host computer (PLC) sends a third control signal to control the extension and retraction of the electric telescopic rod of the adjustment component: the telescopic end drives the clamp, guide block and displacement gauge to move vertically upward along the guide groove of the guide bar, and stops at "the middle height of the water collection area + 100mm" and "the middle height of the water collection area + 200mm" respectively.

[0076] Data acquisition and comparison: The displacement gauge collects "second displacement information" and "third displacement information" at two locations respectively, and transmits them to the multi-channel data acquisition instrument through the displacement output terminal; the acquisition instrument transmits the data to the Zigbee wireless transparent transmission module through the shielded RS485 bus, and then transmits it to the host computer through the Zigbee router and coordinator (Zigbee protocol wireless communication);

[0077] Self-test judgment: The host computer converts the displacement information into displacement values ​​(with the middle section height as the reference point, the displacement value is recorded as 0), and compares it with the preset threshold: if "the second displacement value is between 98mm and 202mm", "the third displacement value is between 198mm and 302mm", and "the difference between the two is between 98mm and 202mm", then the displacement gauge is normal and enters the liquid level detection stage; otherwise, the host computer controls the audible and visual alarm to sound an alarm, indicating that the component is abnormal.

[0078] 2. Liquid level detection and pumping control (timely drainage of accumulated water)

[0079] Test preparation: After the self-test is normal, the host computer controls the electric telescopic rod to drive the displacement gauge back to the middle height of the water collection area and continuously collect "first displacement information" (reflecting the height of the accumulated water level);

[0080] Pumping trigger: The first displacement information is transmitted to the host computer via the above wireless transmission path. After being converted into a first displacement value, it is compared with the preset "first displacement threshold". When the first displacement value > the threshold (the liquid level reaches the pumping requirement), the host computer sends a first control signal to start the pumping device (pump) of the corresponding water collection area.

[0081] Water collection and transportation: The pumping device draws the accumulated water from the collection area through the first pipe to the second pipe, and then transports it to the sewage treatment device.

[0082] 3. Flow detection and wastewater treatment linkage (simultaneous wastewater treatment)

[0083] Flow monitoring: The water flow monitoring instrument on the second pipeline collects sewage flow signals in real time, and transmits them to the host computer via a multi-channel data acquisition instrument and Zigbee system;

[0084] Wastewater treatment trigger: The host computer converts the flow signal into a flow value and compares it with the preset "flow threshold": When the flow value > the threshold (the wastewater volume meets the treatment requirements), a second control signal is issued to start the wastewater treatment device;

[0085] Shut-off valve control: After the sewage treatment device is started, the host computer starts the first timer (to ensure that sewage enters the device and begins treatment). After the timer is completed, the host computer controls the shut-off valve on the guide pipe to open. After the shut-off valve is opened, the host computer starts the second timer (to ensure that the treated sewage is discharged into the collection tank). After the timer is completed, the host computer controls the shut-off valve to close. If emergency operation is required, the operator can manually control the shut-off valve.

[0086] 4. Continuous monitoring and dynamic adjustment (to ensure stable operation)

[0087] During operation, the host computer continuously receives real-time data from the displacement gauge and water flow monitor: if the liquid level drops below the first displacement threshold, the pumping device is shut down; if the flow rate drops below the threshold, the sewage treatment device is shut down; if subsequent data from the displacement gauge is abnormal (such as failure of self-test re-judgment), the audible and visual alarm will sound again to ensure that pumping and treatment are always coordinated and reliable.

[0088] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A liquid level-linked pumping and drainage control device for an underground cavern sump, characterized in that: It includes a water collection area (101), regulating components, displacement meter (107), water flow monitor, pumping device, sewage treatment device, collection tank, power supply and control system; The power supply provides power to the entire pumping control device; There are multiple water collection areas (101). The input end of one of the pumping devices is connected to one of the water collection areas (101) through a first pipe. The sewage treatment device has multiple input ends. Each input end of the sewage treatment device is connected to the output end of the pumping device through a second pipe. The sewage treatment device is located above the collection tank, and the output end of the sewage treatment device is connected to the collection tank. Each water collection area (101) is equipped with a displacement meter (107) through an adjustment component, and each of the second pipes is equipped with a water flow monitoring instrument. The control system includes a multi-channel data acquisition unit, a Zigbee wireless transmission module, a Zigbee router, a Zigbee coordinator, and a host computer. Multiple displacement gauges (107) are located in the middle height area inside different water collection areas (101). Each displacement gauge (107) is provided with a displacement output terminal (108) on its top. Multiple displacement output terminals (108) and multiple water flow monitors are electrically connected to the multi-channel data acquisition unit. The multi-channel data acquisition unit is connected to the Zigbee wireless transmission module via an RS485 bus. The Zigbee wireless transmission module establishes a wireless connection with the Zigbee router via the Zigbee protocol. The Zigbee router establishes a wireless connection with the Zigbee coordinator via the Zigbee protocol. The Zigbee coordinator is electrically connected to the host computer via an RS232 / 485 interface. The adjustment assembly includes a support plate (102), which is installed at one edge of the top opening of the water collection area (101). A vertically arranged guide strip (109) is fixedly installed on the inner wall of the water collection area (101) below the support plate (102). A support frame (103) is provided on the upper surface of the support plate (102). A through hole is opened on the upper surface of the support plate (102) directly below the center of the support frame (103). An electric telescopic rod (104) is provided on the bottom surface of the part. The telescopic end of the electric telescopic rod (104) passes through the through hole and extends to the middle height area inside the water collection area (101). The telescopic end of the electric telescopic rod (104) is provided with a clamp (105). A guide block (106) is provided on the side of the clamp (105) near the guide strip (109). The guide block (106) is slidably connected to the guide strip (109). The displacement gauge (107) is sleeved inside the clamp (105). The host computer receives the first displacement information collected by the input terminal of the displacement meter (107), converts the first displacement information into a first displacement value, compares it with the first displacement threshold preset in the host computer, and when the first displacement value is greater than the first displacement threshold preset, the host computer sends a first control signal to control the pumping device to operate, so that the water in the water collection area (101) is pumped into the sewage treatment device. The host computer receives the flow signal collected by the water flow monitor and converts the flow signal into a flow value. It compares the flow value with the flow threshold preset in the host computer. When the flow value is greater than the preset flow threshold, the host computer sends a second control signal to control the sewage treatment device to start and treat the sewage.

2. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The guide bar (109) is a vertical guide rail, and the side wall of the vertical guide rail is provided with a guide groove. The guide block (106) is embedded in the guide groove and slides in cooperation with the guide groove.

3. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The pumping device is a water pump, and the host computer is a PLC.

4. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The electric telescopic rod (104) is an electric push rod. The fixed end of the electric push rod is fixedly connected to the bottom surface of the middle part of the support frame (103), and the telescopic end of the electric push rod is fixedly connected to the top surface of the clamp (105).

5. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The RS485 bus between the multi-channel data acquisition instrument and the Zigbee wireless transparent transmission module is a shielded RS485 bus, and the outer layer of the shielded RS485 bus is wrapped with a metal shielding mesh.

6. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The output end of the sewage treatment device is connected to the collection tank through a guide pipe. A shut-off valve is installed on the guide pipe, and the shut-off valve is connected to the host computer. In automatic control, when the sewage treatment device is turned on, the host computer starts the first timer. After the first timer is completed, the host computer controls the shut-off valve to open. When the shut-off valve is opened, the host computer starts the second timer. After the second timer is completed, the host computer controls the shut-off valve to close. Alternatively, in manual control mode, the shut-off valve can be manually opened / closed by the operator.

7. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The power source is an industrial-grade switching power supply or a rechargeable lithium battery pack. When a rechargeable lithium battery pack is used, the pumping control device further includes a charging module, which is electrically connected to the rechargeable lithium battery pack and is used to replenish the rechargeable lithium battery pack with power.

8. The underground cavern sump level linkage pumping control device according to claim 1, characterized in that: The pumping control device also includes multiple stress gauges located at the anchor bolt positions, and the stress gauges are electrically connected to the multi-channel data acquisition instrument.

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