A pneumatic intelligent current limiting and flow monitoring device

Abstract

The present invention relates to a pneumatic intelligent flow limiting and flow monitoring device, comprising: a bracket and a channel for fluid passage disposed in the bracket and arranged axially along the bracket; a sensor mounting interface for mounting a flow detection device, the sensor mounting interface being connected to the channel; a pneumatic drive device and a baffle, the pneumatic drive device being fixed above the bracket near the channel outlet, the baffle being connected to the pneumatic drive device and rotating under the drive of the pneumatic drive device to close the channel outlet or change the flow resistance at the channel outlet. Compared to the prior art, the present invention utilizes the sensor mounting interface, the pneumatic drive device, and the baffle to integrate the flow detection device and the flow limiting actuator, achieving flow limiting through a single pneumatic control, thereby utilizing flow feedback opening to achieve quick installation and layout.

Description

Technical Field

[0001] The present invention relates to the field of urban drainage, and in particular to a pneumatic intelligent flow limiting and flow monitoring device. Background Art

[0002] The demand for polluter-cost-based cost accounting is growing in the wastewater industry, particularly given the increasing demand for precise measurement and control systems. A wide variety of flowmeter types have emerged, with over a hundred currently in use. Flowmeters, both domestically and internationally, are demanding increasingly high accuracy and range. To adapt to diverse applications, flow measurement technology is rapidly evolving.

[0003] However, existing flow meters are usually unable to achieve flow limiting. Measurement and execution require two devices to achieve. In addition, they cannot maintain calibration characteristics for a long time, and the physical properties of the fluid will have a significant impact on the flow characteristics. To achieve accurate measurement, it is sometimes necessary to measure in a long straight pipe section, which will take up a large space. In addition, its usage percentage will gradually decrease during use, and on-site installation requirements are high. Summary of the Invention

[0004] The purpose of the present invention is to provide a pneumatic intelligent flow limiting and flow monitoring device, which integrates the flow detection device and the flow limiting actuator by utilizing the sensor mounting interface, the pneumatic drive device and the baffle, and realizes the flow limiting only through a single pneumatic control, thereby utilizing the flow feedback opening to achieve quick installation and layout.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A pneumatic intelligent current limiting and flow monitoring device, comprising:

[0007] A support and a channel for fluid passage provided in the support and arranged axially along the support;

[0008] A sensor installation interface, used for installing a flow detection device, wherein the sensor installation interface is in communication with the channel;

[0009] A pneumatic drive device and a baffle, wherein the pneumatic drive device is fixed above the bracket near the channel outlet, and the baffle is connected to the pneumatic drive device and rotates under the drive of the pneumatic drive device to close the channel outlet or change the flow resistance of the channel outlet.

[0010] The pneumatic drive device comprises:

[0011] A flap and a rotating shaft fixed on the flap, wherein one end of the baffle is fixedly connected to the rotating shaft;

[0012] A mounting frame, with both ends of the rotating shaft hinged to the mounting frame;

[0013] The airbag is arranged on the mounting frame, and the input end is connected to the air source through the air pipe. When inflated, it pushes the flap to drive the rotating shaft to rotate.

[0014] The pneumatic drive device further includes an auxiliary spring connecting the mounting bracket and the baffle.

[0015] The cross section of the channel is T-shaped.

[0016] The sensor installation interface is located in the middle of the bracket.

[0017] The shape of the baffle is consistent with the cross-sectional shape of the channel.

[0018] A handle is sleeved on the bracket and is arranged on the bracket near the channel entrance.

[0019] The bracket is also provided with a support member, and the support member is located below the bracket near the channel outlet.

[0020] The airbag is an elastic airbag.

[0021] The bracket is connected to the outlet side of the rainwater well or the combined sewage floodway through a fixed bracket.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Utilize the sensor installation interface, pneumatic drive device and baffle to integrate the flow detection device and the current limiting actuator. Flow limiting is achieved through a single pneumatic control, thereby utilizing the flow feedback opening to achieve quick installation and layout.

[0024] 2. The movement of the baffle is driven by the airbag, which has high reliability.

[0025] 3. It can be controlled by only one pneumatic signal and has strong anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 is the axial view of the fixed stent;

[0028] Figure 3 This is a structural diagram of the baffle in the open state according to an embodiment of the present invention;

[0029] Figure 4 This is a structural diagram of the baffle in a closed state according to an embodiment of the present invention;

[0030] Figure 5 A schematic structural diagram of a pneumatic drive device designed in an embodiment;

[0031] Among them: 1. Handle, 2. Flow detection device, 3. Auxiliary spring, 4. Channel, 5. Sensor protection cover, 6. Rope hanging point, 7. Pneumatic drive device, 8. Baffle, 9. Bracket. DETAILED DESCRIPTION

[0032] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0033] A pneumatic intelligent flow limiting and flow monitoring device, such as Figures 1 to 4 Shown, including:

[0034] A support 9 and a channel 4 for fluid passage provided in the support 9 and arranged axially along the support 9;

[0035] A sensor installation interface, used for installing a flow detection device, the sensor installation interface being connected to channel 4;

[0036] The pneumatic drive device 7 and the baffle 8 are fixed above the bracket 9 near the outlet of the channel 4. The baffle 8 is connected to the pneumatic drive device 7 and rotates under the drive of the pneumatic drive device 7 to close the outlet of the channel 4 or change the flow resistance of the outlet of the channel 4.

[0037] This device is suitable for use with two flow measurement systems: one for fully filling a pipe and the other for partially filling it. Utilizing a sensor mounting interface, pneumatic actuator, and baffle, the flow detection device and current limiting actuator are integrated. Flow limiting is achieved through a single pneumatic control, which utilizes flow feedback to determine the opening, enabling quick installation and deployment.

[0038] Specifically, the design of the pneumatic drive device 7 can be a conventional design, or it can adopt the lever lifting principle, for example, Figure 5 As shown, the pneumatic drive device 7 includes:

[0039] A flap 71 and a rotating shaft 72 fixed on the flap 71, one end of the baffle 8 is fixedly connected to the rotating shaft;

[0040] A mounting frame 73, with both ends of the rotating shaft 72 hinged to the mounting frame 73;

[0041] The airbag is mounted on the mounting frame 73 , and its input end is connected to the air source through an air pipe. When inflated, it pushes the flap 71 to drive the rotating shaft 72 to rotate.

[0042] The baffle 8 includes a connecting piece and a baffle body, wherein the connecting piece is connected to the rotating shaft 72, wherein the flap 71 and the connecting piece can be a whole. After the airbag is inflated, the flap 71 is lifted upward, thereby driving the connecting piece and the baffle body to rotate together. In this process, the flow resistance of the baffle to the channel 4 gradually increases, and the outlet of the channel 4 is sealed after it is completely blocked by the baffle 8.

[0043] In other embodiments, other designs may be possible. For example, the rotating shaft may be fixed on the mounting frame 73 and pass through the part integrated by the flap 71 and the connecting member. The flap 71 and the connecting member rotate around the rotating shaft 72, which may also achieve a similar effect.

[0044] In addition, in this embodiment, the integrated part of the flap 71 and the connecting part is L-shaped.

[0045] In some embodiments, the pneumatic drive device 7 further includes an auxiliary spring 3 , which connects the mounting bracket 73 and the baffle 8 . The auxiliary spring can provide a torque opposite to the torque provided by the airbag.

[0046] In this embodiment, the cross section of the channel 4 is T-shaped, and the shape of the baffle 8 is consistent with the cross section of the channel 4 .

[0047] The sensor installation interface is located in the middle of the bracket. A handle 1 is provided on the bracket 9. The handle 1 is set on the bracket near the entrance of the channel 4. A support is also provided on the bracket 9. The support is located below the bracket near the outlet of the channel 4.

[0048] In this embodiment, the airbag is an elastic airbag.

[0049] Bracket 9 is connected to the outlet of a stormwater well or combined sewer channel via fixed bracket 2 to limit the amount of water flowing into the sewage treatment plant and activate the reservoir volume. It can be used to limit flow rate at the sewage treatment plant outlet or to limit the flow rate of water entering a sewage well.

[0050] The device is also suitable for full-pipe flow control. If the flow rate falls below the throttling value in dry conditions, the system switches to automatic top-up control. Controlled by the integrated level measurement signal, the flap opens only in the range where the sensor is permanently filled. In this case, the sensor offers the highest measurement accuracy. Once the parameterized maximum outflow rate is reached, the system automatically switches to flow control.

[0051] In particular, when the device of the present application is used, the starting pressure value can also be obtained through the flow rate and water level, and then the baffle 8 can be controlled to work based on the reference signal of the pneumatic pressure value.

[0052] In the unpowered state, damper 8 is normally open. In some embodiments, the ratios of the three reference signals, flow rate, water level, and pneumatic pressure, must always be within defined limits. When outside these limits, such as when the water level is too high relative to the facility's flow rate and the actuation pressure, damper 8 may be temporarily opened. Additionally, when the three reference signals are outside these limits, such as when the back pressure within the facility increases while the flow rate and water level remain constant, the damper may be temporarily opened.

[0053] The above-mentioned equipment requires minimal structural adjustments for different application scenarios, thus reducing overall costs. During flow monitoring, the maximum deviation of the detection value is 1%, and the system performs high-precision adjustments with minimal reset time, regardless of operating time. The system's combined flow detection and control system, including a flow storage unit, has a minimum space required for detection.

[0054] When sediment accumulation is monitored, it can be flushed and discharged in a targeted manner to prevent sediment accumulation in the pipeline.

[0055] The present invention can be operated in an emergency in the event of a power outage or equipment failure. In an emergency, the pneumatic outflow control has different response modes according to different situations.

Claims

1. A pneumatic intelligent current limiting and flow monitoring device, characterized in that: include: A support and a channel (4) disposed in the support and arranged along the axial direction of the support for fluid passage; a sensor installation interface for installing a flow detection device, the sensor installation interface being in communication with the channel (4); A pneumatic drive device (7) and a baffle (8), wherein the pneumatic drive device (7) is fixed above the bracket near the outlet of the channel (4), and the baffle (8) is connected to the pneumatic drive device (7) and rotates under the drive of the pneumatic drive device (7) to close the outlet of the channel (4) or change the flow resistance of the outlet of the channel (4); The ratio between the pneumatic pressure of the pneumatic drive device (7) and the flow rate and water level detected by the flow detection device is within predefined limits; When the ratio between the pneumatic pressure of the pneumatic drive device (7) and the flow rate and water level detected by the flow detection device is not within predefined limits and the water level is too high relative to the flow rate and pneumatic pressure, the baffle (8) is temporarily opened.

2. A pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: The pneumatic drive device (7) comprises: A flap (71) and a rotating shaft (72) fixed on the flap (71), one end of the baffle (8) being fixedly connected to the rotating shaft; A mounting frame (73), with both ends of the rotating shaft (72) hinged to the mounting frame (73); The air bag is arranged on the mounting frame (73), and the input end is connected to the air source through the air pipe. When inflated, the flap (71) is pushed to drive the rotating shaft (72) to rotate.

3. A pneumatic intelligent flow limiting and flow monitoring device according to claim 2, characterized in that: The pneumatic drive device (7) further comprises an auxiliary spring (3) which connects the mounting frame (73) and the baffle (8).

4. A pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: The cross section of the channel (4) is T-shaped.

5. The pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: The sensor installation interface is located in the middle of the bracket.

6. A pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: The shape of the baffle (8) is consistent with the cross-sectional shape of the channel (4).

7. A pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: A handle (1) is sleeved on the bracket, and the handle (1) is arranged on the bracket near the entrance of the channel (4).

8. The pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: The bracket is also provided with a support member, which is located below the bracket near the outlet of the channel (4).

9. The pneumatic intelligent flow limiting and flow monitoring device according to claim 2, characterized in that: The airbag is an elastic airbag.

10. The pneumatic intelligent flow limiting and flow monitoring device according to claim 1, characterized in that: The bracket is connected to the outlet side of the rainwater well or the combined sewage floodway through a fixed bracket.

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