A device for measuring hydraulic characteristics of dust suppression atomizing nozzle and its implementation method

Abstract

The present invention discloses a device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle and an implementation method thereof. The measuring device comprises an adjustable support system, a water supply pipe network system and a monitoring and control system. By adjusting the horizontal support rod and the horizontal plug rod set and the vertical support rod and the vertical plug rod set in the adjustable support system, free telescopic adjustment of the width can be achieved. Scale values ​​are set on the horizontal plug rod and the vertical plug rod, and fastening bolts are set. While reading the values ​​separately, it can also help the operator to fix a set of data and adjust and test other data, so that the obtained data results are more accurate.

Description

[Technical field]

[0001] The invention relates to the technical field of product detection, and in particular to a device for measuring the hydraulic characteristics of a dust reduction atomizing nozzle and an implementation method thereof. [Background technology]

[0002] Construction dust has become one of the important factors of urban dust pollution. It is imperative to strengthen the control of dust pollution at construction sites. In order to reduce the generation of dust at construction sites, corresponding dust reduction measures should be taken at construction sites. Generally, an automatic spray dust removal system with dust reduction atomizing nozzles installed on site fences, both sides of site roads and tower cranes is a commonly used dust reduction measure at construction sites.

[0003] Normally, the automatic sprinkler dust removal system should be designed according to the hydraulic characteristic parameters of the dust reduction atomizing nozzle through detailed hydraulic calculations. However, at present, there is a lack of an effective device and method for measuring the hydraulic characteristics of the dust reduction atomizing nozzle products in the design, production and installation links. The dust reduction atomizing nozzle lacks detailed hydraulic characteristic parameter data. During the design process of the automatic sprinkler dust removal system at the construction site, only the hydraulic parameters of the dust reduction atomizing nozzle can be estimated. The automatic sprinkler dust removal system designed by estimation often cannot be used normally. This results in the automatic sprinkler dust removal system currently installed on the construction site being set up only to meet the requirements of the relevant environmental protection departments. It is common that the automatic sprinkler dust removal system cannot be used normally after setting up, and cannot fully play its role. [Summary of the invention]

[0004] In order to solve the above problems, a device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle and an implementation method thereof are proposed;

[0005] A device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle, characterized in that the device comprises an adjustable support system, a water supply network system and a monitoring and control system;

[0006] The adjustable support system is a rectangular structure, including a horizontal adjustment rod and a vertical adjustment rod;

[0007] The vertical adjustment rod forms two side edges, and the horizontal adjustment rod forms upper and lower edges;

[0008] The lateral adjustment rod is composed of a horizontal insertion rod and a horizontal support rod;

[0009] The horizontal insertion rod is sleeved in the horizontal support rod;

[0010] The vertical adjustment rod is composed of a vertical insertion rod and a vertical support rod;

[0011] The vertical insertion rod is sleeved in the vertical support rod;

[0012] The water supply network system is composed of a water tank, a variable frequency water pump, a water pipe joint, a vertical hose, a water supply steel pipe, and a steel pipe threaded interface;

[0013] The water tank is connected to a variable frequency water pump, the variable frequency water pump is connected to a vertical hose through a water pipe joint, the vertical hose is connected to a water supply steel pipe through a water pipe joint, a steel pipe threaded interface is provided at the end of the water supply steel pipe, and a dust suppression atomizing nozzle is installed on the steel pipe threaded interface;

[0014] The dust reduction atomizing nozzle is arranged at the upper center of the adjustable support system;

[0015] The monitoring and control system is composed of a controller, a signal line, a frequency converter, an electromagnetic flow meter, and a pressure transmitter;

[0016] The controller is connected to the frequency converter via a signal line;

[0017] The frequency converter is connected to a variable frequency water pump;

[0018] The electromagnetic flowmeter is arranged between the variable frequency water pump and the vertical hose;

[0019] The pressure transmitter is arranged on the water supply steel pipe;

[0020] The electromagnetic flowmeter and the pressure transmitter are connected to the controller via signal lines.

[0021] Furthermore, a fastening bolt is provided between the horizontal insertion rod and the horizontal supporting rod.

[0022] Furthermore, a fastening bolt is provided between the vertical insertion rod and the vertical supporting rod.

[0023] Furthermore, a movable base is provided below the vertical adjustment rod.

[0024] Furthermore, the horizontal insertion rod is provided with scale values.

[0025] Furthermore, the vertical insertion rod is provided with scale values.

[0026] Furthermore, the steel pipe threaded interface at the end of the water supply steel pipe is an internal threaded interface, and the dust suppression atomizing nozzle is an external thread.

[0027] An implementation method of a device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle, characterized in that the method comprises the following steps;

[0028] a) Installation preparation: Install the dust suppression atomizing nozzle with external thread to be measured on the threaded interface of the steel pipe;

[0029] b) Determination of rated working pressure and rated flow rate of dust suppression atomizing nozzle: set the flow rate and head of variable frequency water pump on the controller, and the controller changes the frequency of power supply through the frequency converter to control the flow rate and head of variable frequency water pump; measure the water flow rate flowing through the dust suppression atomizing nozzle by the electromagnetic flowmeter installed at the outlet of the variable frequency water pump, and measure the water pressure flowing through the dust suppression atomizing nozzle 1 by the pressure transmitter installed on the water supply steel pipe; change the head and flow rate of the variable frequency water pump, and collect the flow rate and pressure signals flowing through the dust suppression atomizing nozzle in real time and transmit them back to the controller through the signal line for record and storage. The water protection angle of the atomizing nozzle will increase with the increase of pressure. When the water protection angle no longer increases, the corresponding pressure is the rated working pressure, that is, the rated working pressure; the flow rate corresponding to the rated working pressure is the rated flow rate;

[0030] c) Determination of the effective action height of the dust suppression atomizing nozzle: by setting the parameters of the controller, the dust suppression atomizing nozzle is kept working at the rated working pressure, and the height of the vertical plug rod is slowly adjusted until the water droplets sprayed by the dust suppression atomizing nozzle are evenly distributed on the ground, and the fastening bolts on the vertical support rod are tightened. By reading the scale value on the vertical plug rod, the height of the dust suppression atomizing nozzle from the ground can be calculated. This height value is the effective action height of the dust suppression atomizing nozzle;

[0031] d) Determination of the effective action radius of the dust suppression atomizing nozzle: Keep the equipment working at the rated working pressure, rated flow and effective action height, adjust the mobile base or the mobile base to change the relative distance between the vertical support rods, so that the water droplets sprayed by the dust suppression atomizing nozzle are distributed between the two vertical support rods, tighten the fastening bolts on the horizontal support rod, and read the scale value on the horizontal plug rod. This scale value is the effective action radius of the dust suppression atomizing nozzle.

[0032] Furthermore, in the step a), the dust suppression atomizing nozzle to be measured is tightened and installed on the threaded interface of the steel pipe using a special wrench to ensure precise connection, so that the pressure transmitter can accurately measure the water pressure flowing through the dust suppression atomizing nozzle and ensure that there is no leakage between the dust suppression atomizing nozzle and the threaded interface of the steel pipe.

[0033] The horizontal support rod and the horizontal insertion rod of the present invention are assembled together, so that the width can be freely extended and adjusted, and a scale value is provided on the horizontal insertion rod, that is, the width value is composed of a fixed width plus a scale value read on the horizontal insertion rod. The vertical support rod and the vertical insertion rod are similarly composed, and are provided with fastening bolts. While reading the data separately, it can also help the operator to fix a set of data and adjust and test other data, so that the obtained data results are more accurate.

[0034] The present invention measures the hydraulic characteristics of the dust reduction atomizing nozzle in the design, production and installation inspection links, so as to obtain the parameters required in the design of the automatic spray dust removal system, namely the rated working pressure, rated flow, effective action height and effective action radius. During use, the automatic spray dust removal system installed on the construction site is directly set according to the measured parameters, so that it can achieve the expected spray dust removal effect of the design, which is more convenient and quick, and fully plays its role while meeting the requirements of relevant environmental protection departments, saving the cost of repeated settings and subsequent adjustments.

[0035] The present invention has the advantages of simple structure, low manufacturing cost and convenient operation. After measuring the rated working pressure of the dust reduction atomizing nozzle, the operator can obtain the effective action height and effective action radius of the dust reduction atomizing nozzle by adjusting the horizontal adjustment rod and the vertical adjustment rod. The operation is simple and can be operated by one person, thus saving labor costs.

Brief Description of the Drawings

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a partial schematic diagram of the connection between the dust suppression atomizing nozzle and the water supply steel pipe of the present invention;

[0038] Figure 3 It is a partial schematic diagram of the connection between the vertical support rod and the vertical insertion rod of the present invention;

[0039] Figure 4 It is a partial schematic diagram of the connection between the horizontal support rod and the horizontal insertion rod of the present invention;

[0040] Figure 5 Graph showing the relationship between the flow rate and the water protection angle of the atomizing nozzle in this embodiment.

[0041] Among them, 1-dust suppression atomizing nozzle, 2-horizontal plug rod, 3-horizontal supporting rod, 4-vertical plug rod, 5-fastening bolt, 6-vertical supporting rod, 7-mobile base, 8-water pipe joint, 9-frequency conversion water pump, 10-electromagnetic flowmeter, 11-frequency converter, 12-water tank, 13-vertical hose, 14-signal line, 15-controller, 16-water supply steel pipe, 17-pressure transmitter and 18-steel pipe threaded interface. [Specific implementation method]

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] A device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle, characterized in that the device comprises an adjustable support system, a water supply network system and a monitoring and control system;

[0044] The adjustable support system is a rectangular structure, including a horizontal adjustment rod and a vertical adjustment rod;

[0045] The vertical adjustment rod forms two side edges, and the horizontal adjustment rod forms upper and lower edges;

[0046] The lateral adjustment rod is composed of a horizontal insertion rod and a horizontal support rod;

[0047] The horizontal insertion rod is sleeved in the horizontal support rod;

[0048] The vertical adjustment rod is composed of a vertical insertion rod and a vertical support rod;

[0049] The vertical insertion rod is sleeved in the vertical support rod;

[0050] The water supply network system is composed of a water tank, a variable frequency water pump, a water pipe joint, a vertical hose, a water supply steel pipe, and a steel pipe threaded interface;

[0051] The water tank is connected to a variable frequency water pump, the variable frequency water pump is connected to a vertical hose through a water pipe joint, the vertical hose is connected to a water supply steel pipe through a water pipe joint, a steel pipe threaded interface is provided at the end of the water supply steel pipe, and a dust suppression atomizing nozzle is installed on the steel pipe threaded interface;

[0052] The dust reduction atomizing nozzle is arranged at the upper center of the adjustable support system;

[0053] The monitoring and control system is composed of a controller, a signal line, a frequency converter, an electromagnetic flow meter, and a pressure transmitter;

[0054] The controller is connected to the frequency converter via a signal line;

[0055] The frequency converter is connected to a variable frequency water pump;

[0056] The electromagnetic flowmeter is arranged between the variable frequency water pump and the vertical hose;

[0057] The pressure transmitter is arranged on the water supply steel pipe;

[0058] The electromagnetic flowmeter and the pressure transmitter are connected to the controller via signal lines.

[0059] Furthermore, a fastening bolt is provided between the horizontal insertion rod and the horizontal supporting rod.

[0060] Furthermore, a fastening bolt is provided between the vertical insertion rod and the vertical supporting rod.

[0061] Furthermore, it is characterized in that: a movable base is provided below the vertical adjustment rod.

[0062] Furthermore, the horizontal insertion rod is provided with scale values.

[0063] Furthermore, the vertical insertion rod is provided with scale values.

[0064] Furthermore, the steel pipe threaded interface at the end of the water supply steel pipe is an internal threaded interface, and the dust suppression atomizing nozzle is an external thread.

[0065] In this embodiment, the dust suppression atomizing nozzle adopts a DN15 external thread copper atomizing nozzle.

[0066] The method comprises the following steps:

[0067] a) Installation preparation: Install the DN15 external thread copper atomizing nozzle to be measured on the threaded interface of the steel pipe;

[0068] b) Determination of rated working pressure and rated flow rate of dust suppression atomizing nozzle: start the variable frequency pump, set the flow rate and head of the variable frequency water pump on the controller, and the controller changes the frequency of the power supply through the frequency converter to control the flow rate and head of the variable frequency water pump; and measure the water flow rate flowing through the dust suppression atomizing nozzle through the electromagnetic flowmeter installed at the outlet of the variable frequency water pump, and measure the water pressure flowing through the dust suppression atomizing nozzle through the pressure transmitter installed on the water supply steel pipe; change the head and flow rate of the variable frequency water pump, and collect the flow rate and pressure signals flowing through the dust suppression atomizing nozzle in real time and transmit them back to the controller through the signal line for record preservation. The water protection angle of the atomizing nozzle will increase with the increase of pressure. When the water protection angle no longer increases, the corresponding pressure is the rated working pressure and rated flow rate, that is, the rated working pressure; the flow rate corresponding to the rated working pressure is the rated flow rate;

[0069] like Figure 5 As shown in the figure, the spray protection angle of the DN15 external thread copper spray nozzle gradually increases with the flow rate and lift of the variable frequency water pump. The spray protection angle of the spray nozzle will increase with the increase of pressure. When the spray protection angle of the spray nozzle reaches 120°, the spray protection angle of the spray nozzle will no longer change after the pressure increases. At this time, the corresponding pressure is 0.33MPa and the corresponding flow rate is 58L / h. That is, the rated working pressure of the spray nozzle is 0.33MPa and the rated flow rate is 58L / h.

[0070] c) Determination of the effective height of the dust suppression atomizing nozzle: by setting the parameters of the controller, the dust suppression atomizing nozzle is kept working at the rated working pressure of 0.33MPa and the rated flow of 58L / h, and the height of the vertical plug rod is slowly adjusted. If it exceeds a certain height, the water mist cannot effectively fall to the ground under the action of the airflow. When the water droplets sprayed by the dust suppression atomizing nozzle are evenly distributed on the ground, tighten the fastening bolts on the vertical support rod, and the height of the dust suppression atomizing nozzle from the ground can be calculated by reading the scale value on the vertical plug rod. This height value is the effective height of the dust suppression atomizing nozzle; Figure 3 The position shown is read, and in this embodiment, by reading the scale value on the vertical rod, the height of the dust suppression atomizing nozzle from the ground can be calculated to be 4.6m. That is, the effective height of the dust suppression atomizing nozzle is 4.6m.

[0071] d) Determination of the effective action radius of the dust suppression atomizing nozzle: Keep the equipment working at the rated working pressure of 0.33MPa, rated flow of 58L / h and effective action height of 4.6m, adjust the mobile base or the mobile base to change the relative distance between the vertical support rods, so that the water droplets sprayed by the dust suppression atomizing nozzle are distributed between the two vertical support rods, tighten the fastening bolts on the horizontal support rod, and read the scale value on the horizontal plug rod. This scale value is the effective action radius of the dust suppression atomizing nozzle. Figure 4 The reading is taken at the position shown in the figure. In this embodiment, the scale value read on the horizontal rod is 0.6m, that is, the effective action radius of the dust suppression atomizing nozzle is 0.6m.

[0072] Based on the above steps, it is concluded that the rated working pressure of the DN15 external thread copper atomizing nozzle is 0.33MPa, the rated flow rate is 58L / h, the effective action height is 4.6m and the effective action radius is 0.6m. When the dust is actually used on the construction site, the automatic spray dust removal system of the DN15 external thread copper atomizing nozzle is adopted. The optimal setting height of the DN15 external thread copper atomizing nozzle is 4.6m, and the optimal spacing between every two DN15 external thread copper atomizing nozzles is 1.2m. The optimal pressure and flow rate are respectively 0.33MPa and 58L / h, so that the automatic spray dust removal system can give full play to the automatic spray dust removal system with the least equipment.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle, characterized in that The measuring device comprises an adjustable support system, a water supply network system and a monitoring and control system; The adjustable support system is a rectangular structure, including a horizontal adjustment rod and a vertical adjustment rod; The vertical adjustment rod forms two side edges, and the horizontal adjustment rod forms upper and lower edges; The lateral adjustment rod is composed of a horizontal insertion rod and a horizontal support rod; The horizontal insertion rod is sleeved in the horizontal support rod; The vertical adjustment rod is composed of a vertical insertion rod and a vertical support rod; The vertical insertion rod is sleeved in the vertical support rod; The water supply network system is composed of a water tank, a variable frequency water pump, a water pipe joint, a vertical hose, a water supply steel pipe, and a steel pipe threaded interface; The water tank is connected to a variable frequency water pump, the variable frequency water pump is connected to a vertical hose through a water pipe joint, the vertical hose is connected to a water supply steel pipe through a water pipe joint, a steel pipe threaded interface is provided at the end of the water supply steel pipe, and a dust suppression atomizing nozzle is installed on the steel pipe threaded interface; The dust reduction atomizing nozzle is arranged at the upper center of the adjustable support system; The monitoring and control system is composed of a controller, a signal line, a frequency converter, an electromagnetic flow meter, and a pressure transmitter; The controller is connected to the frequency converter via a signal line; The frequency converter is connected to a variable frequency water pump; The electromagnetic flowmeter is arranged between the variable frequency water pump and the vertical hose; The pressure transmitter is arranged on the water supply steel pipe; The electromagnetic flowmeter and the pressure transmitter are connected to the controller via a signal line; A movable base is provided below the vertical adjustment rod; The method comprises the following steps: a) Installation preparation: Install the dust suppression atomizing nozzle with external thread to be measured on the threaded interface of the steel pipe; b) Determination of rated working pressure and rated flow rate of dust suppression atomizing nozzle: set the flow rate and head of variable frequency water pump on the controller, and the controller changes the frequency of power supply through the frequency converter to control the flow rate and head of variable frequency water pump; measure the water flow rate flowing through the dust suppression atomizing nozzle by the electromagnetic flowmeter installed at the outlet of the variable frequency water pump, and measure the water pressure flowing through the dust suppression atomizing nozzle 1 by the pressure transmitter installed on the water supply steel pipe; change the head and flow rate of the variable frequency water pump, and collect the flow rate and pressure signals flowing through the dust suppression atomizing nozzle in real time and transmit them back to the controller through the signal line for record and storage. The water protection angle of the atomizing nozzle will increase with the increase of pressure. When the water protection angle no longer increases, the corresponding pressure is the rated working pressure, that is, the rated working pressure; the flow rate corresponding to the rated working pressure is the rated flow rate; c) Determination of the effective action height of the dust suppression atomizing nozzle: by setting the parameters of the controller, the dust suppression atomizing nozzle is kept working at the rated working pressure, and the height of the vertical plug rod is slowly adjusted until the water droplets sprayed by the dust suppression atomizing nozzle are evenly distributed on the ground, and the fastening bolts on the vertical support rod are tightened. By reading the scale value on the vertical plug rod, the height of the dust suppression atomizing nozzle from the ground can be calculated. This height value is the effective action height of the dust suppression atomizing nozzle; d) Determination of the effective action radius of the dust suppression atomizing nozzle: Keep the equipment working at the rated working pressure, rated flow and effective action height, adjust the movable base to change the relative distance between the vertical support rods, so that the water droplets sprayed by the dust suppression atomizing nozzle are distributed between the two vertical support rods, tighten the fastening bolts on the horizontal support rod, and read the scale value on the horizontal plug rod. This scale value is the effective action radius of the dust suppression atomizing nozzle.

2. The device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle according to claim 1, characterized in that: A fastening bolt is arranged between the horizontal insertion rod and the horizontal supporting rod.

3. The device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle according to claim 1, characterized in that: A fastening bolt is arranged between the vertical insertion rod and the vertical supporting rod.

4. The device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle according to claim 1, characterized in that: The horizontal insertion rod is provided with scale values.

5. The device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle according to claim 1, characterized in that: The vertical insertion rod is provided with scale values.

6. The device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle according to claim 1, characterized in that: The steel pipe threaded interface at the end of the water supply steel pipe is an internal threaded interface, and the dust suppression atomizing nozzle is an external threaded interface.

7. The device for measuring the hydraulic characteristics of a dust suppression atomizing nozzle according to claim 1, characterized in that: In the step a), the dust suppression atomizing nozzle to be measured is tightened and installed on the threaded interface of the steel pipe using a special wrench to ensure precise connection, so that the pressure transmitter can accurately measure the water pressure flowing through the dust suppression atomizing nozzle and ensure that there is no leakage between the dust suppression atomizing nozzle and the threaded interface of the steel pipe.

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