Fog field concentration measuring device

Abstract

The application provides a fog field concentration measuring device, comprising: a fog droplet receiver; the fog droplet receiver comprises an adsorption pipeline and a water absorption assembly; a suction device, comprising a suction fan and a suction pipe, one end of the suction pipe being communicated with the suction fan, and the other end of the suction pipe being communicated with an outlet of the adsorption pipeline; the suction fan controls the flow rate of gas in the adsorption pipeline; a laser speed measuring assembly; a control unit; wherein the control unit controls the suction fan to work according to the movement speed of the fog droplet in the to-be-measured fog field measured by the laser speed measuring assembly, so that the flow rate of the gas flow in the adsorption pipeline is the same as the movement speed of the fog droplet in the to-be-measured fog field; the fog droplet in the to-be-measured fog field enters from the inlet of the adsorption pipeline, the water absorption assembly adsorbs the fog droplet, and the concentration of the fog droplet in the to-be-measured fog field is measured according to the mass change before and after the fog droplet is adsorbed by the water absorption assembly. The application guarantees the accuracy of the fog field concentration measurement result and guarantees that the normal state of the to-be-measured fog field is not disturbed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spray mist field concentration measuring devices, in particular to a mist field concentration measuring device. BACKGROUND

[0002] The spray dust-settling technology is the most common dust control method in the mining working face. However, in the current research on the spray mist field, it is difficult to accurately determine the mist droplet concentration of the mist field in different areas, and it is not efficient to compare the mist field area concentration generated by different nozzles. Therefore, the common way to determine the mist droplet concentration in different areas of the mist field generated by different types of nozzles is to obtain a fuzzy result through simulation software calculation. The simulation calculation of the mist field concentration distribution has limitations and inaccuracy. The existing mist field concentration measuring device often measures by using the principle of the physical action of liquid droplets and laser. The mist droplet concentration detection principle and process are relatively complex, and the determination of the mist droplet concentration has limitations. The mist droplet concentration cannot be measured in a regional manner in multiple points. Moreover, the existing mist field concentration measuring device greatly disturbs the shape distribution of the mist field during measurement, resulting in poor representativeness of the measurement results.

[0003] The existing mist field concentration measuring device using a sponge mist droplet receiver may cause turbulence in the mist field when the sponge in the mist droplet receiver absorbs the mist droplets for detection, which may affect the accuracy of the mist field concentration measurement results and disturb the normal state of the mist field to be measured. SUMMARY

[0004] The present application provides a mist field concentration measuring device to solve the problem of inaccurate measurement of the mist field concentration and disturbance of the normal state of the mist field during measurement in the prior art.

[0005] To solve the above problems, the present application provides a mist field concentration measuring device, which comprises: a mist droplet receiver for absorbing mist droplets in a mist field to be measured; the mist droplet receiver comprises an absorption pipeline and a water absorption assembly, and the water absorption assembly is detachably arranged in the absorption pipeline; a suction device comprising a suction fan and a suction pipe, one end of the suction pipe being in communication with the suction fan, and the other end of the suction pipe being in communication with the outlet of the absorption pipeline; the suction fan controls the flow rate of the gas in the absorption pipeline; a laser speed measuring assembly for measuring the movement speed of the mist droplets in the mist field to be measured; a control unit electrically connected with the suction fan and the laser speed measuring assembly; wherein the control unit controls the operation of the suction fan according to the movement speed of the mist droplets in the mist field to be measured measured by the laser speed measuring assembly, so that the flow rate of the gas in the absorption pipeline is the same as the movement speed of the mist droplets in the mist field to be measured; the mist droplets in the mist field to be measured enter from the inlet of the absorption pipeline, the water absorption assembly absorbs the mist droplets, and the mist droplet concentration of the mist field to be measured is determined according to the mass change before and after the water absorption assembly absorbs the mist droplets.

[0006] Further, the adsorption pipeline comprises an inlet section, a corner section and an outlet section connected in sequence, the central axis of the corner section has an angle with the central axis of the inlet section and the central axis of the outlet section respectively; the outlet of the outlet section is communicated with the air suction pipe; the water absorption assembly is detachably arranged in the corner section.

[0007] Further, the central axis of the inlet section and the central axis of the outlet section are parallel; the central axis of the corner section is perpendicular to the central axis of the inlet section and the central axis of the outlet section respectively; the water absorption assembly comprises a water absorption sponge, the water absorption sponge is detachably arranged on one side of the corner section, and the extension direction of the water absorption sponge is parallel to the central axis of the corner section.

[0008] Further, the fog field concentration measuring device further comprises: a base fixedly arranged; a receiver support for carrying at least a part of the air suction pipe and the mist droplet receiver; the receiver support is movably arranged on the base.

[0009] Further, the receiver support comprises: a carrying frame, a plurality of rollers are arranged below the carrying frame, the base has a guide rail, the rollers cooperate with the guide rail to constrain the movement of the carrying frame along the guide rail; a transverse support is horizontally arranged on the carrying frame; a longitudinal support is vertically arranged on the carrying frame; a pipeline constraint frame is arranged on the carrying frame for constraining and carrying at least a part of the air suction pipe; wherein the mist droplet receiver is a plurality of, at least one mist droplet receiver is adjustably arranged on the transverse support, at least one mist droplet receiver is adjustably arranged on the longitudinal support; the air suction pipe is a plurality of, corresponding to the plurality of mist droplet receivers.

[0010] Further, the receiver support comprises a transverse support, the transverse support comprises: a first constraint rod and a second constraint rod arranged in parallel and spaced apart, the adsorption pipeline is arranged between the first constraint rod and the second constraint rod, and cooperates with the outer walls of the first constraint rod and the second constraint rod respectively to limit the movement along the extension directions of the first constraint rod and the second constraint rod; the first constraint rod has a plurality of positioning through holes arranged axially and spaced apart on the first constraint rod, the mist droplet receiver further comprises a positioning assembly, one end of the positioning assembly is arranged on the adsorption pipeline, and the other end of the positioning assembly is selectively limited with one positioning through hole to fix the adsorption pipeline.

[0011] Further, the first constraint rod and the second constraint rod are both hollow pipe structures, the hollow pipe structures have guide cavities inside, the extension directions of the guide cavities are parallel to the axial directions of the first constraint rod and / or the second constraint rod; the adsorption pipeline has a plurality of rotating wheels outside, at least one rotating wheel is rotatably arranged in the guide cavity of the first constraint rod and cooperates with the inner wall of the guide cavity; at least one rotating wheel is rotatably arranged in the guide cavity of the second constraint rod and cooperates with the inner wall of the guide cavity.

[0012] Further, the positioning assembly comprises: a spring seat fixedly arranged on the outer wall of the adsorption pipeline; a spring sleeved on the spring seat, the elastic force direction of the spring being parallel to the axial direction of the spring seat; a lower tooth column sleeved on the spring seat and abutting against the spring; an upper tooth column sleeved on the spring seat and matched with the lower tooth column; a positioning column arranged on the upper tooth column and selectively matched with the positioning through hole; wherein the upper tooth column has a plurality of upper inclined teeth arranged at intervals in the circumferential direction, the lower tooth column has a plurality of lower inclined teeth arranged at intervals in the circumferential direction, and the upper inclined teeth are engaged with the lower inclined teeth; the distance between the end of the positioning column away from the spring seat and the spring seat is changed by pressing the positioning column to switch the engagement of the upper inclined teeth with at least two different sizes and the lower inclined teeth with at least two different sizes; the positioning column is adjusted to be limitedly matched with the positioning through hole or separated therefrom by changing the distance between the end of the positioning column away from the spring seat and the spring seat.

[0013] Further, the mist droplet receiver further comprises an anemometer arranged on the adsorption pipeline, the anemometer being used for measuring the wind speed in the adsorption pipeline, and the anemometer being electrically connected with the control unit.

[0014] Further, the laser speed measurement assembly comprises: a first laser adjusting frame and a second laser adjusting frame; a first light emitter arranged on the first laser adjusting frame in a position adjustable manner; a second light emitter arranged on the first laser adjusting frame in a position adjustable manner; a light receiver arranged on the second laser adjusting frame in a position adjustable manner; and a Doppler signal analyzer electrically connected with the first light emitter, the second light emitter and the light receiver through cables; wherein the first laser adjusting frame and the second laser adjusting frame are arranged at two sides of the mist field to be measured in a spaced manner, the light receiver receives the light emitted by the first light emitter and the second light emitter respectively to generate a light signal, and the Doppler signal analyzer obtains the movement speed of the mist droplets in the mist field to be measured according to the light signal.

[0015] Further, the mist field concentration measuring device further comprises a mist field simulation assembly, the mist field simulation assembly generates a simulated mist field to be measured by spraying mist droplets at a set speed.

[0016] Further, the mist field simulation assembly comprises: a support frame; a nozzle arranged on the support frame in an adjustable manner and used for spraying mist droplets; a driving pump used for driving the nozzle to spray the mist droplets at a set speed; and a liquid tank used for storing liquid to be sprayed; wherein the liquid tank, the driving pump and the nozzle are sequentially communicated through a liquid pipeline; and the driving pump is electrically connected with the control unit.

[0017] The technical scheme of the present application provides a mist field concentration measuring device, comprising: a mist droplet receiver for adsorbing mist droplets in a mist field to be measured; the mist droplet receiver comprises an adsorption pipeline and a water absorption assembly, and the water absorption assembly is detachably arranged in the adsorption pipeline; a suction device, the suction device comprises a suction fan and a suction pipe, one end of the suction pipe is communicated with the suction fan, and the other end of the suction pipe is communicated with the outlet of the adsorption pipeline; the suction fan controls the flow rate of the gas in the adsorption pipeline; a laser speed measuring assembly for measuring the movement speed of the mist droplets in the mist field to be measured; a control unit electrically connected with the suction fan and the laser speed measuring assembly; wherein, the control unit controls the suction fan to work according to the movement speed of the mist droplets in the mist field to be measured measured by the laser speed measuring assembly, so that the flow rate of the gas flow in the adsorption pipeline is the same as the movement speed of the mist droplets in the mist field to be measured; the mist droplets in the mist field to be measured enter from the inlet of the adsorption pipeline, the water absorption assembly adsorbs the mist droplets, and the mist droplet concentration of the mist field to be measured is determined according to the mass change before and after the water absorption assembly adsorbs the mist droplets. By setting the suction device and the mist droplet receiver to work together, compared with the existing mist field concentration measuring device using a sponge mist droplet receiver, the water absorption assembly in the present application does not stop the movement of the mist droplets when absorbing the mist droplets for detection, avoiding the occurrence of mist field turbulence problem, thereby ensuring the accuracy of the mist field concentration measurement result and the normal state of the mist field to be measured is not disturbed; by setting the laser speed measuring assembly, the flow rate of the gas flow in the adsorption pipeline is ensured to be the same as the movement speed of the mist droplets in the mist field to be measured in structure, thereby maximizing the realization of gas flow simulation, and effectively avoiding the occurrence of mist field turbulence problem. The present application is simple to operate and saves time and labor in measurement, can accurately measure the mist droplet concentration in different regions of the mist field without disturbing the mist field to be measured, has low measurement cost, the measurement method is flexible, can measure the mist field to be measured under different nozzle types and positions, different spray pressures and other influencing factors in space three-dimensionally, has important significance for researching spray concentration, comparing nozzle advantages and disadvantages, and developing new nozzle products. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the application, and together with the description of the application, explain the application. In the drawings:

[0019] Figure 1 A specific structure schematic diagram of the mist field concentration measuring device provided by the embodiment of the present application is shown;

[0020] Figure 2 A partial structure schematic diagram of the mist field concentration measuring device provided by the embodiment of the present application at the position of the mist droplet receiver is shown;

[0021] Figure 3 A cooperation working schematic diagram of the mist droplet receiver and the suction device provided by the embodiment of the present application is shown;

[0022] Figure 4 An external structure diagram of a receiver support provided by an embodiment of the present application is shown;

[0023] Figure 5 A cooperation working diagram of a bearing frame and a base provided by an embodiment of the present application is shown;

[0024] Figure 6 A specific structure diagram of a positioning assembly provided by an embodiment of the present application is shown.

[0025] Among the above figures, the following reference signs are included:

[0026] 10, droplet receiver; 11, adsorption pipeline; 111, inlet section; 112, corner section; 113, outlet section; 114, rotating wheel; 12, water absorption assembly; 13, positioning assembly; 131, spring seat; 132, spring; 133, lower tooth column; 134, upper tooth column; 135, positioning column; 14, anemometer;

[0027] 20, air extraction apparatus; 21, air extractor; 22, air extraction pipeline;

[0028] 30, laser speed measurement assembly; 31, first laser adjusting frame; 32, second laser adjusting frame; 33, first light emitter; 34, second light emitter; 35, light receiver; 36, Doppler signal analyzer;

[0029] 40, control unit;

[0030] 50, base; 51, guide rail;

[0031] 60, receiver support; 61, bearing frame; 611, roller; 62, transverse support; 621, first constraint rod; 6211, positioning through hole; 622, second constraint rod; 63, longitudinal support; 64, pipeline constraint frame;

[0032] 70, fog field simulation assembly; 71, support frame; 72, nozzle; 73, driving pump; 74, liquid tank. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0034] As Figures 1 to 6 shown, the embodiment of the present application provides a fog field concentration measuring device, comprising:

[0035] a fog droplet receiver 10 for adsorbing fog droplets in a to-be-measured fog field; the fog droplet receiver 10 comprises an adsorption pipeline 11 and a water absorption assembly 12, and the water absorption assembly 12 is detachably arranged in the adsorption pipeline 11;

[0036] an air extraction apparatus 20, which comprises an air extractor 21 and an air extraction pipeline 22, one end of the air extraction pipeline 22 is communicated with the air extractor 21, and the other end of the air extraction pipeline 22 is communicated with an outlet of the adsorption pipeline 11; the air extractor 21 controls the flow rate of gas in the adsorption pipeline 11;

[0037] a laser speed measuring assembly 30 for measuring the movement speed of the fog droplets in the to-be-measured fog field;

[0038] a control unit 40 electrically connected with the air extractor 21 and the laser speed measuring assembly 30 respectively;

[0039] wherein, according to the movement speed of the fog droplets in the to-be-measured fog field measured by the laser speed measuring assembly 30, the control unit 40 controls the air extractor 21 to work, so that the flow rate of the gas in the adsorption pipeline 11 is the same as the movement speed of the fog droplets in the to-be-measured fog field; the fog droplets in the to-be-measured fog field enter from the inlet of the adsorption pipeline 11, the water absorption assembly 12 adsorbs the fog droplets, and the concentration of the fog droplets in the to-be-measured fog field is measured according to the mass change before and after the water absorption assembly 12 adsorbs the fog droplets.

[0040] By setting the air extraction apparatus 20 and the fog droplet receiver 10 to work cooperatively, compared with the existing fog field concentration measuring device using a sponge fog droplet receiver, the water absorption assembly 12 in the present application does not stop the movement of the fog droplets when absorbing the fog droplets for detection, thereby avoiding the occurrence of the problem of disturbing the fog field, and further ensuring the accuracy of the fog field concentration measurement result and the normal state of the to-be-measured fog field not being disturbed; by setting the laser speed measuring assembly 30, the flow rate of the gas in the adsorption pipeline 11 is ensured to be the same as the movement speed of the fog droplets in the to-be-measured fog field in structure, thereby maximizing the realization of gas flow simulation, and effectively avoiding the occurrence of the problem of disturbing the fog field. The present application is simple in operation and time-saving and labor-saving in measurement, can accurately measure the concentration of the fog droplets in different regions of the to-be-measured fog field without disturbing the to-be-measured fog field, has low measurement cost, and has flexible measurement method, can measure the to-be-measured fog field generated under different nozzle types and positions, different spraying pressures and other influencing factors in space three-dimensionally, and has important significance for researching the spraying concentration, comparing the advantages and disadvantages of nozzles, and developing new nozzle products.

[0041] As Figure 2 and Figure 3As shown in the drawings, the adsorption pipeline 11 comprises an inlet section 111, a corner section 112 and an outlet section 113 which are sequentially communicated, the central axis of the corner section 112 has an angle with the central axis of the inlet section 111 and the central axis of the outlet section 113 respectively; the outlet of the outlet section 113 is communicated with the air extraction pipeline 22; the water absorption assembly 12 is detachably arranged in the corner section 112. In this way, the adsorption effect of the water absorption assembly 12 on the mist droplets is ensured, and the problem of disturbing the mist field to be measured by the mist droplet receiver 10 is avoided.

[0042] As shown in the drawings, Figure 3 the central axis of the inlet section 111 is parallel to the central axis of the outlet section 113; the central axis of the corner section 112 is perpendicular to the central axis of the inlet section 111 and the central axis of the outlet section 113 respectively; the water absorption assembly 12 comprises a water absorption sponge which is detachably arranged on one side of the corner section 112 (the other side of the corner section 112 is used for airflow passing through), and the extension direction of the water absorption sponge is parallel to the central axis of the corner section 112. In this way, the adsorption effect of the water absorption assembly 12 on the mist droplets is maximized, thereby improving the accuracy of the measurement result of the mist field concentration.

[0043] As shown in the drawings, Figure 4 and Figure 5 the mist field concentration determination device further comprises a base 50 which is fixedly arranged, and a receiver support 60 which is used for carrying at least a part of the air extraction pipeline 22 and the mist droplet receiver 10; the receiver support 60 is movably arranged on the base 50. By movably arranging the receiver support 60 on the base 50, effective adjustment of the mist droplet receiver 10 is realized, and structural support is provided for measuring the mist droplet concentration at different positions of the mist field to be measured.

[0044] Optionally, in another embodiment of the present application which is not shown in the drawings, the base 50 has scales which are arranged at intervals, and the position of the receiver support 60 relative to the base 50 is determined according to the scales.

[0045] As shown in the drawings, Figure 4 and Figure 5As shown, the receiver support 60 comprises: a bearing frame 61, a plurality of rollers 611 are arranged below the bearing frame 61, the base 50 is provided with a guide rail 51, the rollers 611 are matched with the guide rail 51 to constrain the movement of the bearing frame 61 along the guide rail 51; a transverse support 62 horizontally arranged on the bearing frame 61; a longitudinal support 63 vertically arranged on the bearing frame 61; a pipeline constraint frame 64 arranged on the bearing frame 61 for constraining and bearing at least a part of the air extraction pipe 22; wherein the mist droplet receiver 10 is a plurality of, at least one mist droplet receiver 10 is adjustably arranged on the transverse support 62, at least one mist droplet receiver 10 is adjustably arranged on the longitudinal support 63; the air extraction pipe 22 is a plurality of, which is arranged one by one with the plurality of mist droplet receivers 10. By matching the rollers 611 with the guide rail 51, the movement reliability of the bearing frame 61 on the base 50 is ensured; by matching the transverse support 62, the longitudinal support 63 and the plurality of mist droplet receivers 10, the mist field concentration measuring device provided by the application can realize multi-point measurement of different heights and horizontal positions in the mist field to be measured, and provide structural support for subsequent calculation of the mist droplet distribution rule in the mist field to be measured.

[0046] As shown in the specific embodiment of the application, Figure 5 The guide rail 51 has a total of four, which are distributed on both sides of the base 50, the bearing frame 61 is clamped between the two sides of the base 50, and each guide rail 51 has a roller 611 matched therein; in this way, the movement reliability of the bearing frame 61 on the base 50 is further ensured.

[0047] As shown in the specific embodiment of the application, Figure 2 And Figure 4 The transverse support 62 comprises: first and second constraint rods 621 and 622 arranged in parallel and at intervals, the adsorption pipeline 11 is arranged between the first and second constraint rods 621 and 622 and is matched with the outer walls of the first and second constraint rods 621 and 622 respectively to move along the extension directions of the first and second constraint rods 621 and 622; the first constraint rod 621 has a plurality of positioning through holes 6211 arranged axially and at intervals thereon, the mist droplet receiver 10 further comprises a positioning assembly 13, one end of the positioning assembly 13 is arranged on the adsorption pipeline 11, and the other end of the positioning assembly 13 is selectively matched with one of the positioning through holes 6211 to fix the adsorption pipeline 11. In this way, the high-precision adjustment and fixation of the mist droplet receiver 10 on the receiver support 60 are ensured, and the reliable bearing and limiting of the receiver support 60 on the mist droplet receiver 10 are realized.

[0048] In a specific embodiment of the application, the transverse support 62 and the longitudinal support 63 have the same structure, so as to facilitate unified maintenance, replacement and procurement.

[0049] As Figure 2 shown, the first constraint rod 621 and the second constraint rod 622 are both hollow tube structures, the inside of the hollow tube structure has a guide cavity, the extension direction of the guide cavity is parallel to the axial direction of the first constraint rod 621 and / or the second constraint rod 622; the outside of the adsorption pipeline 11 is provided with a plurality of rotating wheels 114, at least one rotating wheel 114 is rotatably arranged in the guide cavity of the first constraint rod 621 and cooperates with the inner wall of the guide cavity; at least one rotating wheel 114 is rotatably arranged in the guide cavity of the second constraint rod 622 and cooperates with the inner wall of the guide cavity. In this way, the guide cavities of the first constraint rod 621 and the second constraint rod 622 can jointly constrain the movement of the adsorption pipeline 11 along the axial direction of the first constraint rod 621 and / or the second constraint rod 622, which is convenient for adjustment and makes the movement stable.

[0050] As Figure 6 shown, the positioning assembly 13 includes: a spring seat 131 fixedly arranged on the outer wall of the adsorption pipeline 11; a spring 132 sleeved on the spring seat 131, the spring force direction of the spring 132 is parallel to the axial direction of the spring seat 131; a lower tooth column 133 sleeved on the spring seat 131 and abutting against the spring 132; an upper tooth column 134 sleeved on the spring seat 131 and cooperating with the lower tooth column 133; a positioning column 135 arranged on the upper tooth column 134 and selectively cooperating with a positioning through hole 6211; wherein the circumferential direction of the upper tooth column 134 has a plurality of upper inclined teeth arranged at intervals, the circumferential direction of the lower tooth column 133 has a plurality of lower inclined teeth arranged at intervals, and the upper inclined teeth and the lower inclined teeth are engaged; by pressing the positioning column 135, at least two different sizes of upper inclined teeth and at least two different sizes of lower inclined teeth are switched to engage, so as to change the distance between the end of the positioning column 135 away from the spring seat 131 and the spring seat 131; by changing the distance between the end of the positioning column 135 away from the spring seat 131 and the spring seat 131, the positioning column 135 is adjusted to be limitedly cooperated with the positioning through hole 6211 or separated. In this way, the structure of the positioning assembly 13 is simplified, and the work of the positioning assembly 13 is reliable.

[0051] It should be noted that the specific working principle of the positioning assembly 13 is similar to the overall elastic structure in a push ball pen, but the specific structure size and external shape of the positioning column 135, the specific size of the upper inclined teeth and the lower inclined teeth, etc. are flexibly adjusted according to actual use requirements.

[0052] As Figure 2 and Figure 3As shown, the mist droplet receiver 10 further comprises an anemometer 14, which is arranged on the adsorption pipeline 11 and used for measuring the wind speed in the adsorption pipeline 11, and the anemometer 14 is electrically connected with the control unit 40. By arranging the anemometer 14, the wind speed in the adsorption pipeline 11 can be measured in real time; in actual use, the anemometer 14 with a display screen can be used so as to facilitate the staff to read the wind speed and other related information in real time.

[0053] As shown in the figure, Figure 1 The laser speed measurement assembly 30 comprises: a first laser adjusting frame 31 and a second laser adjusting frame 32; a first light emitter 33 adjustably arranged on the first laser adjusting frame 31; a second light emitter 34 adjustably arranged on the first laser adjusting frame 31; a light receiver 35 adjustably arranged on the second laser adjusting frame 32; a Doppler signal analyzer 36 electrically connected with the first light emitter 33, the second light emitter 34 and the light receiver 35 through cables; wherein the first laser adjusting frame 31 and the second laser adjusting frame 32 are arranged at two sides of the mist field to be measured, the light receiver 35 receives the light emitted by the first light emitter 33 and the second light emitter 34 respectively to generate a light signal, and the Doppler signal analyzer 36 obtains the movement speed of the mist droplets in the mist field to be measured according to the light signal. In this way, the working reliability of the laser speed measurement assembly 30 is ensured, and the structure of the laser speed measurement assembly 30 is simplified, thereby effectively reducing the cost.

[0054] As shown in the figure, Figure 1 The mist field concentration measuring device further comprises a mist field simulation assembly 70, which generates a simulated mist field to be measured by spraying mist droplets at a set speed. In actual use, the set speed can be the same as the movement speed of the mist droplets in the mist field to be measured; a sample mist field is generated by simulating the mist field to be measured through the mist field simulation assembly 70, and the mist droplets receiver 10 adsorbs the mist droplets in the sample mist field to simulate the adsorption of the mist droplets in the mist field to be measured. In this way, when the actual mist field to be measured is not convenient for direct measurement, only the movement speed of the mist droplets in the actual mist field to be measured needs to be known, and the simulation measurement can be performed remotely, thereby improving the applicability of the device and realizing the measurement in some narrow environments in underground coal mines.

[0055] As shown in the figure, Figure 1 The mist field simulation assembly 70 comprises: a support frame 71; a nozzle 72 adjustably arranged on the support frame 71 and used for spraying mist droplets; a driving pump 73 used for driving the nozzle 72 to spray mist droplets at a set speed; a liquid tank 74 used for storing liquid to be sprayed; wherein the liquid tank 74, the driving pump 73 and the nozzle 72 are sequentially communicated through a liquid pipeline; and the driving pump 73 is electrically connected with the control unit 40. In this way, the spraying reliability of the mist field simulation assembly 70 is ensured, and the structure of the mist field simulation assembly 70 is simplified, thereby effectively reducing the cost.

[0056] Now the specific working principle of the present application is described in detail: first, the movement speed of the fog droplets in the fog field area to be measured is measured (for example, by the laser speed measuring assembly 30 or other ways), the fog droplet movement speed v of the area is obtained, the speed displayed on the anemograph 14 is controlled by the control unit to be the same as the fog droplet movement speed v, when the fog field simulation assembly 70 does not need to work, at this time, the measurement can be started; when the fog field simulation assembly 70 needs to work, the nozzle 72 is opened, the simulated sample fog field is formed, and then the measurement is started; after the measurement is started, the fog droplets in the fog field enter the inside of the fog droplet receiver 10, pass through the inlet section 111, the corner section 112 and the outlet section 113 in turn, the fog droplets move from bottom to top in the corner section 112 under the action of the airflow, the fog droplets contact the water absorption assembly 12 and are captured by the water absorption assembly 12 under the influence of inertia, after the airflow containing the fog droplets passes through the corner section 112, the airflow does not contain the fog droplets; after the experiment is finished, the experiment duration t is recorded, the nozzle 72 is closed, the mass change of the water absorption assembly 12 before and after the experiment is weighed, the mass difference m is obtained, and the fog droplet concentration of the fog field to be measured in the area can be preliminarily calculated by the formula ρ=m / t.

[0057] In summary, the present application provides a fog field concentration measuring device, compared with the existing fog field concentration measuring device using a sponge fog droplet receiver 10, the water absorption assembly 12 in the present application does not stop the movement of the fog droplets when absorbing the fog droplets for detection, avoiding the occurrence of the fog field turbulence problem, thereby ensuring the accuracy of the fog field concentration measurement result and the normal state of the fog field to be measured is not disturbed; by setting the laser speed measuring assembly 30, the airflow velocity in the adsorption pipeline 11 is ensured to be the same as the movement speed of the fog droplets in the fog field to be measured, thereby maximizing the airflow simulation, and effectively avoiding the occurrence of the fog field turbulence problem. The present application is simple to operate and saves time and labor in measurement, can accurately measure the fog droplet concentration in different areas of the fog field without disturbing the fog field to be measured, has low measurement cost, the measurement method is flexible, can measure the fog field to be measured under different nozzle types and positions, different spray pressures and other influencing factors in space three-dimensionally, has important significance for researching spray concentration, comparing nozzle advantages and disadvantages, and developing new nozzle products.

[0058] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0059] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless specifically so stated. It is also to be understood that the dimensions shown in the drawings are not necessarily to scale, and that the various parts are shown only with the understanding that their dimensions, shapes, and other characteristics can be varied in accordance with the specific application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as if they were discussed herein in their broadest form. In all examples shown and discussed herein, any specific value is to be interpreted as illustrative only and not as a limitation on the scope of the application. Thus, other examples of example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several views, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures where it is shown.

[0060] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "horizontal", "top", "bottom", and the like are based on the orientation or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the parts themselves.

[0061] For purposes of the description hereinafter, the orientations in the various figures will be described, as it is for example purposes only, as is conventional, with the front of the device, or structure, being faced upwards and the rear thereof faced downwards. Other orientations will likewise, or conversely, apply as a matter of design choice, and as such, the spatially relative terms "front", "back", "under", "above", "upper", "lower", and the like, are intended to and do describe the perceived location in space as placed in the orientation described herein and the concepts of "front" and "back" are interchangeable when the device is inverted. Unless otherwise stated, the ordinal terms first, second, etc. are used loosely to differentiate between two individually discrete points, areas, regions, or components. Such ordinal terms indicate a preference as to the order or sequence of one structural or functional element over another. It is further to be understood that any term or use of a term in the description or claims (including a plural and / or a singular form) can be taken to include one as well as any other tangent, related, or similar forms or types thereof.

[0062] In addition, it should be pointed out that the use of the terms "first", "second" and the like in connection with various elements is merely intended for identification and does not in any way indicate or imply a special order or sequence of the elements. The terms "first", "second", and the like are not intended to limit the scope of the present application.

[0063] The preferred embodiments herein disclosed are not intended to limit or restrict the scope of the application, for such scope is set forth in the claims appended hereto. Accordingly, the disclosure of the preferred embodiments is intended to be illustrative, but not limiting, of the scope of the present application, which is set forth in the following claims.

Claims

1. A device for measuring the concentration of a fog field, characterized in that The fog droplet receiver (10) is used for adsorbing fog droplets in a fog field to be measured. The fog droplet receiver (10) comprises an adsorption pipeline (11) and a water absorption assembly (12), and the water absorption assembly (12) is detachably arranged in the adsorption pipeline (11). The air suction device (20) comprises an air suction machine (21) and an air suction pipeline (22), one end of the air suction pipeline (22) is communicated with the air suction machine (21), and the other end of the air suction pipeline (22) is communicated with the outlet of the adsorption pipeline (11); the air suction machine (21) controls the flow rate of the gas in the adsorption pipeline (11). The laser speed measurement assembly (30) is used for measuring the movement speed of the fog droplets in the fog field to be measured. The control unit (40) is electrically connected with the air suction machine (21) and the laser speed measurement assembly (30) respectively. The control unit (40) controls the air suction machine (21) to work according to the movement speed of the fog droplets in the fog field to be measured measured by the laser speed measurement assembly (30), so that the flow rate of the gas in the adsorption pipeline (11) is the same as the movement speed of the fog droplets in the fog field to be measured; the fog droplets in the fog field to be measured enter from the inlet of the adsorption pipeline (11), the water absorption assembly (12) adsorbs the fog droplets, and the fog droplet concentration of the fog field to be measured is determined according to the mass change of the water absorption assembly (12) before and after the fog droplets are adsorbed. The fog field concentration measuring device further comprises a base (50) fixedly arranged, and a receiver support (60) used for carrying at least a part of the air suction pipeline (22) and the fog droplet receiver (10); the receiver support (60) is movably arranged on the base (50). The receiver support (60) comprises a carrying frame (61), a plurality of rollers (611) are arranged below the carrying frame (61), the base (50) has a guide rail (51), the rollers (611) cooperate with the guide rail (51) to constrain the movement of the carrying frame (61) along the guide rail (51); a transverse support (62) is horizontally arranged on the carrying frame (61); a longitudinal support (63) is vertically arranged on the carrying frame (61); a pipeline constraint frame (64) is arranged on the carrying frame (61) and used for constraining and carrying at least a part of the air suction pipeline (22); wherein the fog droplet receiver (10) is a plurality of, at least one fog droplet receiver (10) is adjustably arranged on the transverse support (62), and at least one fog droplet receiver (10) is adjustably arranged on the longitudinal support (63); the air suction pipeline (22) is a plurality of and corresponds to a plurality of the fog droplet receivers (10) one by one. The fog droplet receiver (10) further comprises an anemometer (14) arranged on the adsorption pipeline (11), the anemometer (14) is used for measuring the wind speed in the adsorption pipeline (11), and the anemometer (14) is electrically connected with the control unit (40). ​ The adsorption pipe (11) includes an inlet section (111), a corner section (112), and an outlet section (113) connected in sequence. The central axis of the corner section (112) forms an angle with the central axis of the inlet section (111) and the central axis of the outlet section (113), respectively. The outlet of the outlet section (113) is connected to the exhaust pipe (22). The water absorption assembly (12) is detachably installed in the corner section (112). The water-absorbing component (12) includes a water-absorbing sponge, which is detachably disposed on one side of the corner section (112) and the extending direction of the water-absorbing sponge is parallel to the central axis of the corner section (112); the other side of the corner section (112) is used for airflow.

2. The fog density determination apparatus according to claim 1, characterized by The central axis of the inlet section (111) is parallel to the central axis of the outlet section (113); the central axis of the corner section (112) is perpendicular to the central axis of the inlet section (111) and the central axis of the outlet section (113), respectively.

3. The fog density determination apparatus of claim 1, wherein The receiver bracket (60) includes a transverse bracket (62), which includes a first constraint rod (621) and a second constraint rod (622) arranged in parallel and at intervals. The adsorption pipe (11) is arranged between the first constraint rod (621) and the second constraint rod (622) and is respectively limited to the outer wall of the first constraint rod (621) and the second constraint rod (622) to move along the extension direction of the first constraint rod (621) and the second constraint rod (622). The first constraint rod (621) has a plurality of positioning through holes (6211) arranged at intervals along the axial direction of the first constraint rod (621). The droplet receiver (10) also includes a positioning component (13). One end of the positioning component (13) is arranged on the adsorption pipe (11), and the other end of the positioning component (13) can be selectively limited to one of the positioning through holes (6211) to fix the adsorption pipe (11).

4. The fog density determination apparatus according to claim 3, wherein Both the first constraint rod (621) and the second constraint rod (622) are hollow tube structures. The hollow tube structure has a guide cavity inside, and the extension direction of the guide cavity is parallel to the axial direction of the first constraint rod (621) and / or the second constraint rod (622). Multiple rotating wheels (114) are provided on the outside of the adsorption pipe (11). At least one of the rotating wheels (114) is rotatably disposed in the guide cavity of the first constraint rod (621) and cooperates with the inner wall of the guide cavity. At least one of the rotating wheels (114) is rotatably disposed in the guide cavity of the second constraint rod (622) and cooperates with the inner wall of the guide cavity.

5. The apparatus of claim 3, wherein The positioning component (13) includes: A spring seat (131) is fixedly installed on the outer wall of the adsorption pipe (11); A spring (132) is sleeved on the spring seat (131), and the direction of the elastic force of the spring (132) is parallel to the axis of the spring seat (131). A lower tooth column (133) is sleeved on the spring seat (131) and abuts against the spring (132); An upper tooth column (134) is sleeved on the spring seat (131) and cooperates with the lower tooth column (133); A positioning column (135) is arranged on the upper tooth column (134) and selectively cooperates with the positioning through hole (6211); The upper tooth column (134) has a plurality of upper inclined teeth arranged at intervals in the circumferential direction, the lower tooth column (133) has a plurality of lower inclined teeth arranged at intervals in the circumferential direction, the upper inclined teeth are engaged with the lower inclined teeth; by pressing the positioning column (135), the engagement of the upper inclined teeth with at least two different sizes and the lower inclined teeth with at least two different sizes is switched to change the distance between the end of the positioning column (135) away from the spring seat (131) and the spring seat (131); by changing the distance between the end of the positioning column (135) away from the spring seat (131) and the spring seat (131), the positioning column (135) is adjusted to be in limiting cooperation or disengagement with the positioning through hole (6211).

6. The apparatus of claim 1, wherein The laser speed measurement assembly (30) comprises: A first laser adjusting frame (31) and a second laser adjusting frame (32); A first light emitter (33) is adjustably arranged on the first laser adjusting frame (31); A second light emitter (34) is adjustably arranged on the first laser adjusting frame (31); A light receiver (35) is adjustably arranged on the second laser adjusting frame (32); A Doppler signal analyzer (36) is electrically connected to the first light emitter (33), the second light emitter (34) and the light receiver (35) through cables; The first laser adjusting frame (31) and the second laser adjusting frame (32) are arranged at intervals on both sides of the to-be-measured fog field, the light receiver (35) receives the light emitted by the first light emitter (33) and the second light emitter (34) respectively to generate a light signal, and the Doppler signal analyzer (36) obtains the movement speed of the fog droplets in the to-be-measured fog field according to the light signal.

7. The apparatus of claim 1, wherein The fog field concentration measuring device further comprises a fog field simulation assembly (70) which generates a simulated to-be-measured fog field by spraying fog droplets at a set speed.

8. The fog density determination apparatus of claim 7, wherein The fog field simulation assembly (70) comprises: A support frame (71); A nozzle (72) is adjustably arranged on the support frame (71) for spraying fog droplets; A drive pump (73) is used to drive the nozzle (72) to spray fog droplets at the set speed; A liquid tank (74) is used to store the liquid to be sprayed; The liquid tank (74), the drive pump (73) and the nozzle (72) are sequentially connected through a liquid pipeline; and the drive pump (73) is electrically connected to the control unit (40).

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