Flow valve type decontamination metering device

Abstract

The application discloses a flow valve type decontamination metering device, which comprises a bottom plate, an input pipeline, an output pipeline and a metering assembly control box installed on the bottom plate, a dynamic flow balance valve arranged at the joint of the input pipeline and the output pipeline, an inlet at one end of the input pipeline for decontamination agent flowing into the decontamination metering device, an outlet at the other end of the output pipeline for delivering the metered decontamination agent, an electric valve, a pressure gauge and a pressure reducing valve arranged on the input pipeline from one end of the inlet to the other end in sequence, a flowmeter arranged on the output pipeline, test branches vertically arranged on the input pipeline and the output pipeline, and the test branch on the input pipeline located between the pressure gauge and the pressure reducing valve. The pressure reducing valve 9 is used for reducing the pressure of the decontamination agent in the delivery ring pipe to 0-0.4 MPa higher than the set pressure of the fire water pipeline, so that the metering assembly keeps the decontamination agent flow outputting stably under the flow stabilizing effect of the dynamic flow balance valve 14, and the decontamination agent flow outputting by the metering assembly keeps stable despite the fluctuation of the pressure difference between the decontamination agent delivery ring pipe and the fire water pipeline within a certain range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire extinguishers, in particular to a flow valve type decontamination metering device. BACKGROUND

[0002] The traditional decontamination system design scheme is to set a total decontamination agent storage tank and set a decontamination metering station near each protection area, and the two are connected through a pipeline. The metering station mainly consists of a decontamination agent storage cabinet, a metering pump, a high-precision flow meter, a control cabinet, a decontamination agent pipeline, a water-decontamination agent mixer and a control valve. During decontamination operation, the decontamination agent storage tank pressurizes and sends the decontamination agent to the decontamination agent storage cabinet of each metering station, the flow meter measures the water flow in the pipeline in real time, and the control box adjusts the rotating speed of the metering pump in real time according to the water flow in the pipeline, so that the output decontamination agent is always in a constant proportion of about 0.05% with the fire water flow.

[0003] One defect of the traditional method is that the accurate proportioning of the decontamination mixed solution needs the decontamination agent metering pump, the flow meter and the control system to act simultaneously to realize, the control process is complex, and in the case of power failure of the decontamination metering station, the decontamination operation will be difficult to carry out. At the same time, the decontamination metering station contains many devices and is heavy, which has an adverse effect on the weight control of the ship and the like. SUMMARY

[0004] In order to solve the above-mentioned defects of the prior art, the present application provides a flow valve type decontamination metering device.

[0005] In order to solve the above-mentioned technical problems, the present application adopts the following technical scheme: a flow valve type decontamination metering device, comprising a bottom plate, an input pipeline, an output pipeline and a metering assembly control box are installed on the bottom plate, a dynamic flow balance valve is arranged at the connection position of the input pipeline and the output pipeline, one end of the input pipeline is an inlet for decontamination agent to flow into the decontamination metering device, the other end of the output pipeline is an outlet for decontamination agent to be delivered out after metering; an electric valve, a pressure gauge and a pressure reducing valve are arranged in sequence on the input pipeline from one end to the other end; and a flow meter is arranged on the output pipeline.

[0006] A test branch is vertically arranged on each of the input pipeline and the output pipeline, and the test branch on the input pipeline is located between the pressure gauge and the pressure reducing valve.

[0007] Preferably, the test branch comprises a test valve and a quick connector, one end of the test valve is connected with the input pipeline or the output pipeline, and the other end of the test valve is connected with the quick connector.

[0008] Preferably, a base is arranged below the bottom plate, and a vibration isolator is arranged between the base and the bottom plate.

[0009] Preferably, a blowdown pipeline is connected with one end of the input pipeline close to the dynamic flow balance valve, and a ball valve for controlling the switch is arranged on the blowdown pipeline.

[0010] Preferably, a shut-off valve is installed near the inlet of the input pipe and near the outlet of the output pipe.

[0011] Preferably, an exhaust valve and a check valve are installed on the output pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the pressure reducing valve 9 is used to reduce the pressure of the decontaminant in the delivery loop to a range of 0~0.4MPa higher than the set pressure of the fire water pipeline, so that under the flow stabilization effect of the dynamic flow balancing valve 14, the decontaminant flow rate output by the metering component remains stable even though there is a certain range of fluctuation in the pressure difference between the decontaminant delivery loop and the fire water pipeline. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] The following are marked in the diagram: 1. Inlet; 2. Shut-off valve; 3. Metering component control box; 4. Electric valve; 5. Pressure gauge; 6. Test branch; 7. Test valve; 8. Quick connector; 9. Pressure reducing valve; 10. Vibration isolator; 12. Sewage pipe; 13. Ball valve; 14. Dynamic flow balancing valve; 17. Flow meter; 22. Exhaust valve; 23. Check valve; 25. Decontamination metering component outlet; 11. Base; 15. Base plate. Detailed Implementation

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and 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, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0016] The invention will now be described in detail with reference to the accompanying drawings and embodiments. Example 1

[0017] A flow valve type decontamination metering device has an input pipe, an output pipe, and a metering component control box 3 mounted on a base plate 15. A dynamic flow balancing valve 14 is installed at the connection between the input pipe and the output pipe. One end of the input pipe is an inlet 1, which is used for the decontamination agent to flow into the decontamination metering device. The other end of the output pipe is an outlet 25, which is used to deliver the metered decontamination agent out. An electric valve 4, a pressure gauge 5, and a pressure reducing valve 9 are sequentially installed on the input pipe from one end of the inlet 1 to the other end. A flow meter 17 is installed on the output pipe. A test branch 6 is vertically installed on both the input pipe and the output pipe. The test branch 6 on the input pipe is located between the pressure gauge 5 and the pressure reducing valve 9.

[0018] An electric valve 4 is installed sequentially from one end of inlet 1 to the other on the input pipeline. This electric valve can be a solenoid valve or an electric ball valve, used to realize remote control of the metering component. The electric valve also has a manual opening function, a pressure gauge 5, and a pressure reducing valve 9. A flow meter 17 is installed on the output pipeline.

[0019] Test branches 6 are vertically installed on both the input and output pipelines. The test branch 6 on the input pipeline is located between the pressure gauge 4 and the pressure reducing valve 9. The pressure reducing valve 9 is used to reduce the pressure of the decontaminant in the input pipeline to a range of 0~0.4MPa higher than the set pressure of the fire water pipeline. This ensures that, under the flow stabilization effect of the dynamic flow balancing valve 14, the flow rate of the decontaminant output by the metering component remains stable despite fluctuations in the pressure difference between the input and output pipelines.

[0020] A certain concentration of decontamination agent can be diluted into a decontamination mixture of 0.05% to 0.1%. The dynamic flow balancing valve 14 can be set with a flow rate setting. Within a pressure difference range of 0 to 0.4 MPa, it can achieve a stable flow near the set flow rate setting. A certain concentration of decontamination agent mixed with fire water at a set flow rate can form a decontamination mixture with a concentration range of 0.05% to 0.1%.

[0021] In this embodiment, the test branch 6 includes a test valve 7 and a quick connector 8. One end of the test valve 7 is connected to an input pipe or an output pipe, and the other end is connected to the quick connector 8.

[0022] In this embodiment, a base 11 is provided under the base plate 15, and a vibration isolator 10 is installed between the base 11 and the base plate 15. The vibration isolator 10 and the base 11 effectively reduce the impact of external shocks, vibrations, and jolts on the washing and decontamination metering component, thereby increasing its vibration resistance and impact resistance. This metering component uses a GH series steel wire rope vibration isolator, which has variable damping and variable stiffness characteristics, low transmission rate, and excellent vibration isolation and buffering performance.

[0023] In this embodiment, the end of the input pipe near the dynamic flow balancing valve 14 is connected to a drain pipe 12, and a ball valve 13 for controlling the switch is provided on the drain pipe 12.

[0024] In this embodiment, a shut-off valve 2 is installed at both the inlet 1 of the input pipe and the outlet 25 of the output pipe.

[0025] In this embodiment, an exhaust valve 22 and a check valve 23 are installed on the output pipe.

[0026] Working principle: After the device is turned on, the electric valve 4 of the decontamination metering component is opened via electrical control. A certain concentration of decontamination agent enters the decontamination metering component through the input pipeline. The exhaust valve 22 at the end of the metering component automatically opens to exhaust air. Then, by adjusting the opening of the pressure reducing valve 9 and the dynamic flow balancing valve 14, the outlet flow range of the decontamination metering component is adjusted to the target area, and finally enters the output pipeline, completing the mixing and dilution of the decontamination agent. A shut-off valve 2 is installed at the beginning of the decontamination metering component for easy maintenance, and a one-way valve 23 is installed at the end to prevent fire water from entering the decontamination metering component.

[0027] During decontamination operations, after the delivery pump 28 is turned on, the electric valve 4 of the decontaminant metering component is opened via electrical control, and the decontaminant enters the metering component through the delivery pipeline 27. During decontamination operations, the delivery device can connect to multiple decontamination metering components, which are connected in parallel and can be opened simultaneously, or specific areas of the decontamination components can be selected for activation. The outlet of the decontamination metering component is connected to the fire water pipeline (not shown). When the decontaminant reaches the set pressure in the metering device pipeline, the vent valve 22 automatically opens to release air, preventing excessive pressure inside the decontamination component pipeline. Subsequently, the metering device pipeline is filled with decontaminant. Adjusting the opening of pressure reducing valve 9 is used to reduce the pressure of the decontaminant in the delivery loop to a range of 0~0.4MPa higher than the set pressure of the fire water pipeline; then, adjusting the dynamic flow balancing valve 14 and setting the flow level achieves stable flow near the set flow level value, ensuring that the decontaminant flow rate output by the metering component remains stable. The flow data can be read on the flow meter 17 or sent to the electrical control box 3 of the decontamination metering component. The pressure data can be read through the pressure gauge 5 on the component.

[0028] The disinfectant metering assembly is equipped with ball valves or shut-off valves 2 at both ends to isolate the metering assembly from the disinfectant loop and fire water pipeline when necessary (e.g., for maintenance). A one-way valve 23 is installed at the end to prevent seawater from entering the disinfectant metering assembly. This metering assembly is equipped with a test branch 6 for routine maintenance and testing. A test valve 7 is installed at the interface to test the flow rate of the disinfectant metering assembly, detecting any discrepancies between the metering assembly's flow rate data and the actual flow rate, ensuring the accuracy of the flow rate. After the disinfection operation is completed, the disinfectant residue remains in the loop, which can corrode and damage the equipment and pipelines. Manually opening the ball valve 13 on the drain pipe 12 allows the residual disinfectant in the metering assembly pipeline to be discharged.

[0029] The electric valve 4 can be controlled to open and close via the electric control box 3, or it can be manually controlled. It can also be used for decontamination operations in the event of a power outage in a zone. The above embodiments only illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention should be determined by the appended claims.

Claims

1. A flow valve type washing and disinfection metering device, comprising a base plate (15), characterized in that: An input pipe, an output pipe, and a metering component control box (3) are installed on the base plate (15). A dynamic flow balancing valve (14) is installed at the connection between the input pipe and the output pipe. One end of the input pipe is the inlet (1), which is used for the decontamination agent to flow into the decontamination metering device. The other end of the output pipe is the outlet (25), which is used to transport the metered decontamination agent out. An electric valve (4), a pressure gauge (5), and a pressure reducing valve (9) are installed sequentially from one end of the inlet (1) to the other end of the input pipe. A flow meter (17) is installed on the output pipe. A test branch (6) is vertically installed on both the input pipe and the output pipe. The test branch (6) on the input pipe is located between the pressure gauge (5) and the pressure reducing valve (9). An exhaust valve (22) and a check valve (23) are installed on the output pipe. When the decontamination agent enters the decontamination metering device pipe and reaches the set pressure, the exhaust valve (22) automatically opens to exhaust the air to prevent the internal pressure of the decontamination metering device pipe from being too high. Then the decontamination metering device pipe is filled with decontamination agent. Adjust the opening of the pressure reducing valve (9) to reduce the pressure of the decontaminant to a range of 0~0.4MPa higher than the set pressure of the fire water pipeline; then adjust the dynamic flow balancing valve (14) to set the flow level, so as to achieve stable flow near the set flow level value and ensure that the decontaminant flow output by the metering device remains stable. The electric valve (4) is controlled to open and close through the metering component control box (3), or the electric valve can be manually controlled to open and close, so as to carry out disinfection operations in the event of power failure in the zone.

2. The flow valve type washing and disinfection metering device as described in claim 1, characterized in that: The test branch (6) includes a test valve (7) and a quick connector (8). One end of the test valve (7) is connected to an input pipe or an output pipe, and the other end is connected to a quick connector (8).

3. The flow valve type washing and disinfection metering device as described in claim 1, characterized in that: A base (11) is provided under the base plate (15), and a vibration isolator (10) is installed between the base (11) and the base plate (15).

4. The flow valve type washing and disinfection metering device as described in claim 1, characterized in that: The input pipe is connected to a drain pipe (12) at one end near the dynamic flow balance valve (14), and a ball valve (13) for controlling the switch is provided on the drain pipe (12).

5. The flow valve type washing and disinfection metering device as described in claim 4, characterized in that: Both the input pipe near the inlet (1) and the output pipe near the outlet (25) are equipped with shut-off valves (2).

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