Urban pipe network water level early warning pressure differential monitoring device

Abstract

The invention discloses a pressure differential monitoring device for early warning of water level in a city pipe network, comprising an outer cylinder, an inner cylinder, a cylinder cover, a pneumatic switch, a battery module and an Internet of Things module; the outer cylinder comprises an upper large-diameter section, a partition and a lower small-diameter section, the lower small-diameter section has a lower cavity with an open lower end, the upper large-diameter section has an upper cavity with an open upper end, the inner cylinder is arranged in the upper cavity, and the upper cavity is divided into a first cavity and a second cavity, the lower end of the first cavity is an open end, the second cavity is provided with a pneumatic switch, a battery module and an Internet of Things module, an antenna module is arranged outside the outer cylinder, an air nozzle is arranged on the partition, a hose connecting the air nozzle and the pneumatic switch is arranged in the second cavity, the pneumatic switch and the Internet of Things module are electrically connected to the battery module, the antenna module is electrically connected to the Internet of Things module, and the Internet of Things module is used to send signals to a remote terminal; the application controls the start and stop of the monitoring device by air pressure differential, which can effectively reduce the power consumption of the monitoring device and extend the service life of the monitoring device.

Description

Technical Field

[0001] The present application relates to the technical field of drainage pipe networks, and in particular to a water level early warning pressure differential monitoring device for urban pipe networks. Background Art

[0002] Drainage pipe networks are important urban infrastructure. Due to historical reasons, pipe network systems in many areas have problems such as insufficient planning and design, mixed rainwater and sewage, and poor maintenance and management. In addition, with the frequent heavy rains in recent years and the increase in impermeable ground after urbanization, many cities have suffered varying degrees of waterlogging disasters, affecting the normal order of urban life, causing serious economic losses, and damaging environmental sanitation and the ecosystem. In order to deal with waterlogging, it is necessary not only to take appropriate engineering measures, but also to fundamentally strengthen the operation and management of drainage pipe networks. Due to the concealment of underground pipe networks, traditional pipe network management and decision-making are often based on subjective judgment, and lack effective monitoring methods and necessary data support. This management model can no longer meet the needs of modern management.

[0003] At present, there are many kinds of products used for water level detection in drainage pipe networks at home and abroad. For example, China Invention discloses a well liquid level monitoring device (application number: 202111270732 9), including a liquid level sensor, a device control box and a liquid level monitoring module. The device control box includes a liquid level calibration control board for automatically controlling the liquid level monitoring module. The liquid level monitoring module is installed on the liquid level calibration control board. The liquid level sensor can sense the liquid level and transport the data to the control system. The device control box is equipped with hardware equipment for monitoring and processing sensor data. The liquid level monitoring module is used to record, display and store the received data. The liquid level calibration control board is responsible for preliminary liquid level monitoring and calibration, and switches the device to a high-precision gateway for continued monitoring when the monitored liquid level reaches the limit. The liquid level monitoring device is always in operation and consumes a lot of power. Generally, the battery module does not last more than 90 days. When the battery module is out of power, it needs to be charged or replaced, which is not only inconvenient to use, but also has high operation and maintenance costs. In addition, this type of equipment does not have a waterproof function, and the equipment fails after being flooded. Summary of the invention

[0004] In view of this, the present application proposes a pressure differential monitoring device for water level warning in a city pipe network, which controls the start and stop of the monitoring device by means of air pressure differential, so as to effectively reduce the power consumption of the monitoring device and extend the service life of the monitoring device.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A water level early warning pressure differential monitoring device for a city pipe network, comprising an outer cylinder, an inner cylinder, a cylinder cover, a pneumatic switch, a battery module and an Internet of Things module;

[0007] The outer cylinder has an upper large diameter section and a lower small diameter section, a partition is provided between the upper large diameter section and the lower small diameter section, the lower small diameter section has a lower cavity with an open lower end, the upper large diameter section has an upper cavity with an open upper end, and the cylinder cover is sealed at the open end of the upper cavity of the outer cylinder;

[0008] The inner cylinder is arranged at the side of the upper cavity and divides the upper cavity into a first cavity and a second cavity. The partition is provided with an opening for the first cavity to communicate with the outside. The upper end of the inner cylinder is provided with a through hole for communicating the first cavity with the second cavity.

[0009] The second cavity is provided with a pneumatic switch, a battery module and an Internet of Things module from top to bottom in sequence, an antenna module is provided on the outside of the outer cylinder, a gas nozzle connecting the lower cavity and the second cavity is provided on the partition, a hose connecting the gas nozzle and the control end of the pneumatic switch is provided in the second cavity, the pneumatic switch and the Internet of Things module are electrically connected to the battery module, the antenna module is electrically connected to the Internet of Things module, and the Internet of Things module sends a signal to a remote terminal via the antenna module;

[0010] Wherein, when the liquid level in the pipe network well is lower than the lower end surface of the lower cavity, the air pressure in the lower cavity and the second cavity is consistent with the air pressure of the external environment, and the pneumatic switch is disconnected;

[0011] When the liquid level in the pipe network well gradually rises and is higher than the lower end surface of the lower cavity, the air pressure in the second cavity is consistent with the external environmental pressure, and the air pressure in the lower cavity gradually becomes higher than the external environmental pressure, until the gas in the lower cavity presses the pneumatic switch and makes the pneumatic switch pass under the action of the pressure difference, the electrical circuit of the pneumatic switch, the battery module and the Internet of Things module is energized, and the Internet of Things module transmits an Internet of Things signal to the remote terminal through the antenna module to alarm, and then stands by;

[0012] When the liquid level in the pipe network well continues to rise and is lower than the lower end surface of the first cavity, the air pressure in the lower cavity continues to increase. During this process, the pneumatic switch continues to be connected, and the Internet of Things module is in a standby state;

[0013] When the liquid level in the pipeline well overflows the lower end surface of the first cavity, the gas in the first cavity is pressed into the second cavity, so that the gas pressure in the second cavity gradually becomes greater than the external environmental pressure. At the same time, the liquid level in the first cavity is lower than the liquid level in the pipeline well but also rises at the same time. The water level rise rate in the first cavity is lower than the liquid level in the pipeline well. When the pressure difference formed by the liquid level in the pipeline well and the liquid level difference in the first cavity is greater than the pressure difference between the second cavity and the external environmental pressure, the water in the pipeline well gradually enters the second cavity through the through hole. At this time, the monitoring device fails to function due to water ingress.

[0014] To better implement the above technical solution, optionally, when the monitoring device is effective, when the liquid level outside the monitoring device drops below the lower end surface of the lower cavity, the pneumatic switch is disconnected, the electrical circuit of the pneumatic switch, battery module and Internet of Things module is powered off, and the Internet of Things module again transmits an Internet of Things signal to the remote terminal to eliminate the alarm.

[0015] Optionally, the ratio of the volume of the first cavity to the free volume of the second cavity is 1:2-1:6.

[0016] Optionally, the central axis of the upper large-diameter section and the central axis of the lower small-diameter section are offset up and down.

[0017] Optionally, a mounting bracket is fixedly provided on the outer side of the outer cylinder, and the mounting bracket is used to fix the monitoring device on the upper well wall of the pipe network well.

[0018] Optionally, a clamping groove is circumferentially formed on the lower inner wall of the lower cavity, and the clamping groove is used for clamping the extension tube.

[0019] Optionally, a phone card is installed in the Internet of Things module.

[0020] Optionally, a sealing ring is provided on the contact surface between the outer cylinder and the cylinder cover.

[0021] Optionally, the remote terminal includes a mobile client or a cloud.

[0022] Optionally, the Internet of Things module sends the information of the remaining power of the battery module, the depth of water flooding the monitoring device, and the location information while sending the alarm or alarm cancellation signal to the remote terminal.

[0023] Beneficial effects of this application:

[0024] The urban pipe network water level early warning pressure differential monitoring device of the present application is that when the liquid level of the pipe network well rises above the lower end surface of the lower cavity, the air pressure of the lower cavity has a pressure difference with the air pressure of the external environment, and the pressure difference causes the air in the lower cavity to trigger the pneumatic switch passage through the air nozzle and the hose, so that the electrical circuits of the pneumatic switch, the battery module and the Internet of Things module are energized, and the Internet of Things module transmits the Internet of Things signal to the mobile phone client or the cloud through the antenna module to alarm, and then stands by; when the liquid level of the pipe network well drops below the lower end surface of the lower cavity, the pneumatic switch is automatically disconnected, the electrical circuits of the pneumatic switch, the battery module and the Internet of Things module are powered off, and the Internet of Things module then transmits the Internet of Things signal to eliminate the alarm.

[0025] The urban pipe network water level early warning pressure differential monitoring device of the present application is not only simple and compact in structure, small in size, light in weight, and low in installation and use cost, but also has extremely low power consumption. A 5500mAh battery module 50 can be used for more than five years, which extremely simply solves the problem of early warning of blockage and overflow of rainwater and sewage pipe networks.

[0026] The urban pipe network water level early warning pressure difference monitoring device of the present application can be used not only in water wells of urban drainage pipe networks, but also more widely in cable wells, rivers and underground passages. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of a pressure differential monitoring device for early warning of water level in a city pipe network according to Example 1 of the present application;

[0028] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0029] Figure 3 yes Figure 2 Schematic diagram of the structure of the outer cylinder and the inner cylinder;

[0030] Figure 4 is a bottom view of 1;

[0031] Figure 5 yes Figure 1 Schematic diagram of usage.

[0032] Monitoring device 1, outer cylinder 10, partition 11, air nozzle 111, first cavity 12, second cavity 13, lower cavity 14, sealing ring 15, mounting bracket 16, inner cylinder 20, through hole 21, cylinder cover 30, pneumatic switch 40, hose 41, battery module 50, Internet of Things module 60, antenna module 70, manhole cover 2. DETAILED DESCRIPTION

[0033] The technical solution of the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.

[0034] Example

[0035] See also Figures 1 to 4 The present application discloses a city pipe network water level early warning pressure differential monitoring device 1, comprising an outer cylinder 10, an inner cylinder 20, a cylinder cover 30, a pneumatic switch 40, a battery module 50 and an Internet of Things module 60.

[0036] like Figure 2 and Figure 3As shown, the outer cylinder 10 has an upper large diameter section and a lower small diameter section, a partition 11 is provided between the upper large diameter section and the lower small diameter section, the upper large diameter section, the lower small diameter section and the partition 11 are an integral structure, the lower small diameter section has a lower cavity 14 with an open lower end, the upper large diameter section has an upper cavity with an open upper end, and the cylinder cover 30 is sealed at the open end of the upper cavity of the outer cylinder 10. Specifically, the outer annular surface of the upper end of the outer cylinder 10 is provided with an external thread, and the inner annular surface of the cylinder cover 30 is provided with an internal thread. The cylinder cover 30 is connected to the outer cylinder 10 by matching the internal thread and the external thread. The contact surface between the outer cylinder 10 and the cylinder cover 30 is provided with an O-shaped sealing ring 15. The provision of the sealing ring 15 can increase the sealing performance of the connection between the outer cylinder 10 and the cylinder cover 30.

[0037] like Figure 3 and Figure 4 As shown, the inner cylinder 20 is arranged at the side of the upper cavity and divides the upper cavity into a first cavity 12 and a second cavity 13. The partition 11 is provided with an opening for connecting the first cavity 12 with the outside, and the upper end of the inner cylinder 20 is provided with a through hole 21 connecting the first cavity 12 and the second cavity 13.

[0038] A pneumatic switch 40, a battery module 50 and an Internet of Things module 60 are sequentially installed in the second cavity 13 from top to bottom, an antenna module 70 is installed on the outside of the outer tube 10, an air nozzle 111 connecting the lower cavity 14 and the second cavity 13 is opened on the partition 11, and a hose 41 connecting the air nozzle 111 and the control end of the pneumatic switch 40 is arranged in the second cavity 13. The hose 41 is preferably a silicone tube. The pneumatic switch 40 and the Internet of Things module 60 are both electrically connected to the battery module 50, and the antenna module 70 is electrically connected to the Internet of Things module 60. The Internet of Things module 60 sends a signal to a remote terminal through the antenna module 70, wherein the remote terminal includes a mobile phone client or a cloud. A phone card is installed in the Internet of Things module 60, and the signal sent by the Internet of Things module 60 includes a water level rising alarm signal, a water level falling alarm release signal, information on the remaining power of the battery module 50, water depth height information flooding the monitoring device 1, and position information.

[0039] like Figure 5 As shown, the monitoring device 1 is installed on the upper wall of the pipe network well and is located below the well cover 2. When the liquid level of the pipe network well is lower than the lower end surface of the lower cavity 14, the air pressure of the lower cavity 14 and the second cavity 13 are consistent with the external environmental pressure, and the pneumatic switch 40 is disconnected;

[0040] When the liquid level in the pipe network well gradually rises and is higher than the lower end surface of the lower cavity 14, the air pressure in the second cavity 13 is consistent with the external environmental pressure, and the air pressure in the lower cavity 14 gradually becomes higher than the external environmental pressure, until the gas in the lower cavity 14 presses the pneumatic switch 40 and makes the pneumatic switch 40 pass under the action of the pressure difference, and the electrical circuits of the pneumatic switch 40, the battery module 50 and the Internet of Things module 60 are energized, and the Internet of Things module 60 transmits an Internet of Things signal to the remote terminal through the antenna module 70 to alarm, and then stands by;

[0041] When the liquid level in the pipe network well continues to rise and is lower than the lower end surface of the first cavity 12, the air pressure in the lower cavity 14 continues to increase. During this process, the pneumatic switch 40 continues to be connected, and the Internet of Things module 60 is in a standby state.

[0042] When the liquid level in the pipe network well overflows the lower end surface of the first cavity 12, the gas in the first cavity 12 is pressed into the second cavity 13, so that the air pressure in the second cavity 13 gradually becomes greater than the external environmental air pressure. At the same time, the liquid level in the first cavity 12 is lower than the liquid level in the pipe network well but also rises at the same time. The water level in the first cavity 12 rises at a lower speed than the liquid level in the pipe network well. When the pressure difference formed by the difference between the liquid level in the pipe network well and the liquid level in the first cavity 12 is greater than the pressure difference between the second cavity 13 and the external environmental air pressure, the water in the pipe network well gradually enters the second cavity 13 through the through hole 21, and the monitoring device 1 fails to enter water at this time.

[0043] In an optional embodiment of the present application, when the monitoring device 1 is effective, when the liquid level outside the monitoring device 1 drops below the lower end surface of the lower cavity 14, the pneumatic switch 40 is disconnected, the electrical circuits of the pneumatic switch 40, the battery module 50 and the Internet of Things module 60 are de-energized, and the Internet of Things module 60 transmits a water level drop alarm release signal to the remote terminal.

[0044] When the liquid level in the pipe network well is lower than the lower end surface of the lower cavity 14, the air pressure in the lower cavity 14 and the second cavity 13 is consistent with the air pressure of the external environment, and the pneumatic switch 40 is disconnected;

[0045] In the embodiments of the present application, the volume ratio of the first cavity 12 to the free volume of the second cavity 13 is 1:2-1:6. When the volume ratio of the first cavity 12 to the free volume of the second cavity 13 is 1:6, in the existing urban pipe network well, it can be ensured that when the monitoring device 1 is flooded at a height of 1.5m, the water in the pipe network well cannot enter the second cavity 13; the volume ratio of the first cavity 12 to the free volume of the second cavity 13 is 1:2. In the existing urban pipe network well, it can be ensured that when the monitoring device 1 is flooded at a height of 5m, the water in the pipe network well cannot enter the second cavity 13, so that the monitoring device 1 has strong practicality and a wide range of application.

[0046] In an optional embodiment of the present application, a clamping groove is circumferentially formed on the lower inner wall of the lower cavity 14. The clamping groove is used for clamping the extension pipe. According to different water level height detection requirements, extension pipes of different lengths can be selected.

[0047] In an optional embodiment of the present application, the central axis of the upper large-diameter section is vertically offset from the central axis of the lower small-diameter section to facilitate the arrangement of the inner cylinder 20. There may be two inner cylinders 20, and the cross-section of the inner cylinder 20 may be circular, square, or irregular.

[0048] In an optional embodiment of the present application, a mounting bracket 16 is fixedly provided on the outer side of the outer cylinder 10. The mounting bracket 16 is used to fix the monitoring device 1 on the upper well wall of the pipe network well. Specifically, the mounting bracket 16 includes a horizontal plate body integrated with the partition plate 11 and a vertical plate body fixedly connected to the horizontal plate body. At least two mounting holes 161 are formed in the vertical plate body, and the monitoring device 1 is fixed on the well wall of the pipe network well by connecting nails passing through the mounting holes 161.

[0049] For the differential pressure type monitoring device 1 for urban pipe network water level warning of the present application, when the liquid level in the pipe network well rises above the lower end face of the lower cavity 14, a pressure difference is formed between the air pressure in the lower cavity 14 and the external environmental air pressure. This pressure difference causes the air in the lower cavity to pass through the air nozzle and the hose to trigger the on-path of the pneumatic switch 40, so that the electrical circuits of the pneumatic switch 40, the battery module 50, and the Internet of Things module 60 are powered on. The Internet of Things module 60 transmits an Internet of Things signal to the mobile phone client or the cloud for alarm through the antenna module 70, and then stands by; when the liquid level in the pipe network well drops below the lower end face of the lower cavity 14, the pneumatic switch 40 automatically disconnects, the electrical circuits of the pneumatic switch 40, the battery module 50, and the Internet of Things module 60 are powered off, and the Internet of Things module 60 transmits an Internet of Things signal to cancel the alarm.

[0050] The differential pressure type monitoring device 1 for urban pipe network water level warning of the present application is not only simple and compact in structure, small in size, light in weight, low in installation and use cost, but also extremely low in power consumption. A 5500 mAh battery module 50 can be used for more than five years, and it extremely simply solves the problem of early detection of rain and sewage pipe network blockage and overflow.

[0051] The above has introduced the technical solutions of the present application in detail in combination with specific embodiments. The described specific embodiments are used to help understand the idea of the present application. The derivations and deformations made by those skilled in the art based on the specific embodiments of the present application also fall within the protection scope of the present application.

Claims

1. A water level early warning pressure differential monitoring device for urban pipe network (1), characterized in that: It comprises an outer cylinder (10), an inner cylinder (20), a cylinder cover (30), a pneumatic switch (40), a battery module (50) and an Internet of Things module (60); The outer cylinder (10) comprises an upper large diameter section and a lower small diameter section, a partition (11) is provided between the upper large diameter section and the lower small diameter section, the lower small diameter section comprises a lower cavity (14) with an open lower end, the upper large diameter section comprises an upper cavity with an open upper end, and the cylinder cover (30) is sealed at the open end of the upper cavity of the outer cylinder (10); The inner cylinder (20) is arranged at the side of the upper cavity and divides the upper cavity into a first cavity (12) and a second cavity (13); the partition plate (11) is provided with an opening for connecting the first cavity (12) with the outside; and the upper end of the inner cylinder (20) is provided with a through hole (21) connecting the first cavity (12) and the second cavity (13); The second cavity (13) is provided with a pneumatic switch (40), a battery module (50) and an Internet of Things module (60) in order from top to bottom; an antenna module (70) is provided on the outside of the outer tube (10); a gas nozzle (111) connecting the lower cavity (14) and the second cavity (13) is provided on the partition (11); a hose (41) connecting the gas nozzle (111) and a control end of the pneumatic switch (40) is provided in the second cavity (13); the pneumatic switch (40) and the Internet of Things module (60) are both electrically connected to the battery module (50); the antenna module (70) is electrically connected to the Internet of Things module (60); and the Internet of Things module (60) sends a signal to a remote terminal via the antenna module (70); When the liquid level in the pipe network well is lower than the lower end surface of the lower cavity (14), the air pressure of the lower cavity (14) and the second cavity (13) are consistent and consistent with the external environmental air pressure, and the pneumatic switch (40) is disconnected; When the liquid level in the pipe network well gradually rises and is higher than the lower end surface of the lower cavity (14), the air pressure in the second cavity (13) is consistent with the air pressure of the external environment, and the air pressure in the lower cavity (14) gradually becomes higher than the air pressure of the external environment, until the gas in the lower cavity (14) presses the pneumatic switch (40) and causes the pneumatic switch (40) to pass under the action of the pressure difference, and the electrical circuits of the pneumatic switch (40), the battery module (50) and the Internet of Things module (60) are energized, and the Internet of Things module (60) transmits an Internet of Things signal to a remote terminal via the antenna module (70) to alarm, and then enters standby mode; When the liquid level in the pipe network well continues to rise and is lower than the lower end surface of the first cavity (12), the air pressure in the lower cavity (14) continues to increase. During this process, the pneumatic switch (40) is continuously connected and the Internet of Things module (60) is in a standby state. When the liquid level in the pipe network well overflows the lower end surface of the first cavity (12), the gas in the first cavity (12) is pressed into the second cavity (13), so that the gas pressure in the second cavity (13) gradually becomes greater than the external environmental pressure. At the same time, the liquid level in the first cavity (12) is lower than the liquid level in the pipe network well but also rises at the same time. The water level in the first cavity (12) rises at a speed lower than the speed of the liquid level in the pipe network well. When the pressure difference formed by the difference between the liquid level in the pipe network well and the liquid level in the first cavity (12) is greater than the pressure difference between the second cavity (13) and the external environmental pressure, the water in the pipe network well gradually enters the second cavity (13) through the through hole (21). At this time, the monitoring device (1) fails to be inactivated due to water ingress.

2. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1 is characterized in that: When the monitoring device (1) is effective, when the liquid level outside the monitoring device (1) drops below the lower end surface of the lower cavity (14), the pneumatic switch (40) is disconnected, the electrical circuits of the pneumatic switch (40), the battery module (50) and the Internet of Things module (60) are de-energized, and the Internet of Things module (60) transmits a water level drop alarm release signal to a remote terminal.

3. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1 is characterized in that: The ratio of the volume of the first cavity (12) to the free volume of the second cavity (13) is 1:2-1:

6.

4. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1, characterized in that: The central axis of the upper large diameter section and the central axis of the lower small diameter section are vertically offset.

5. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1 is characterized in that: A mounting bracket (16) is fixedly provided on the outside of the outer cylinder (10), and the mounting bracket (16) is used to fix the monitoring device (1) on the upper wall of the pipe network well.

6. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1, characterized in that: The lower inner wall of the lower cavity (14) is provided with a clamping groove in an annular direction, and the clamping groove is used for clamping the extension tube.

7. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1, characterized in that: A sealing ring (15) is provided on the contact surface between the outer cylinder (10) and the cylinder cover (30).

8. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1, characterized in that: The remote terminal includes a mobile client or a cloud.

9. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 1, characterized in that: The Internet of Things module (60) is equipped with a telephone card.

10. The urban pipe network water level early warning pressure differential monitoring device (1) according to claim 9, characterized in that: The Internet of Things module (60) sends an alarm or alarm cancellation signal to the remote terminal, and also sends information on the remaining power of the battery module (50), information on the depth of water flooding the monitoring device (1), and location information.

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