Air cooler blockage measuring device

Abstract

The utility model discloses an air cooler blockage measuring device, which comprises an air cooler, two ends of the air cooler are connected with air ducts, two air ducts are respectively provided with an air inlet and an air outlet, the air inlet and the air outlet are detachably connected to a rubber tube through differential pressure gauge connecting pieces, and the rubber tube is connected with the differential pressure gauge connecting pieces. And the two rubber hoses are connected to a differential pressure gauge. The air inlets and the air outlets of the air ducts on the two sides of the air cooler are connected with the differential pressure gauges through the rubber hoses, the dynamic pressure of the air flow in the air ducts is measured through the pitot tubes by observing the pressure difference change before and after the air cooler, then the air speed is obtained through back calculation, and then the air duct section air volume is calculated. The influence degree of the air cooler on the air supply effect is determined by comparing air volume changes at the two ends of the air cooler, measures are taken in time, deposited dust and the like in the air cooler are removed, and the air supply effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air coolers, and particularly relates to an air cooler blockage determination device. Background Art

[0002] In the underground ventilation management work, a U-shaped water column gauge is used to measure the ventilation resistance of the roadway in the main system roadway. Inspired by this, the ventilation resistance during the air supply process of the local ventilation system is determined and whether there are air supply potential hazards is judged.

[0003] During the roadway driving process, if the local fan is installed in the belt conveyor roadway, the inhaled air current will carry more dust. When the air current passes through the air cooler, affected by the decrease in air temperature and water vapor, a large amount of dust will precipitate and adhere to the inner wall of the air cooler. Over time, it will cause the air cooler to become blocked, resulting in a reduction in the air supply volume at the heading face, thus posing a safety hazard to ventilation and gas management. Since the internal blockage condition of the air cooler cannot be directly observed, it is often discovered only when the air supply volume is severely affected.

[0004] Therefore, it is necessary to measure the change in the air pressure difference between the air currents on both sides of the air cooler to determine whether the air cooler is blocked and whether it needs to be flushed, so as to ensure that the air volume of the working face meets the requirements. Based on this, the present application proposes an air cooler blockage determination device to solve the above deficiencies. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is: how to determine whether the air cooler is blocked and whether it needs to be flushed to ensure that the air volume of the working face meets the requirements.

[0006] To solve the above technical problem, the utility model provides the following technical solutions:

[0007] An air cooler blockage determination device includes an air cooler, air ducts are connected to both ends of the air cooler, small holes are respectively opened on two air ducts, differential pressure gauge connectors are installed at the small holes, and both differential pressure gauge connectors are detachably connected to rubber hoses, and the rubber hoses are connected to a differential pressure gauge.

[0008] In this application, differential pressure gauges are connected through rubber hoses at the air inlets and outlets of the air ducts on both sides of the air cooler. By observing the change in the differential pressure before and after the air cooler, the dynamic pressure of the air current in the air duct is obtained, and then the air velocity is inversely calculated, and then the air volume of the air duct cross-section is calculated. By comparing the change in the air volume at both ends of the air cooler, it is judged whether there is a blockage problem in the air cooler, so as to determine whether the air cooler affects the air supply effect. If it affects, measures are taken in time to remove the deposited dust in the air cooler, etc., to ensure the air supply effect.

[0009] As a further scheme of the utility model: the differential pressure gauge connector is hollow inside and is communicated with the corresponding air duct inside.

[0010] As a further solution of the utility model: the differential pressure gauge connecting piece and the rubber hose are detachably connected through a right-angle quick connector, and the diameter of the right-angle quick connector is 10 mm.

[0011] As a further solution of the utility model: a valve is provided on the differential pressure gauge connecting piece.

[0012] As a further solution of the utility model: an inner gasket is provided on the inner wall of the air duct, and the inner gasket is fixed at the corresponding small hole through a nut;

[0013] An outer gasket is provided on the outer wall of the air duct, and the outer gasket is located outside the differential pressure gauge connecting piece and is fixed at the corresponding small hole.

[0014] As a further solution of the utility model: the inner gasket and the outer gasket are provided with openings inside and correspond to the corresponding small holes.

[0015] As a further solution of the utility model: the differential pressure gauge adopts a "U" type differential pressure gauge.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] In this application, differential pressure gauges are connected through rubber hoses at the air inlets and outlets of the air ducts on both sides of the air cooler. By observing the change of the differential pressure before and after the air cooler, the dynamic pressure of the air flow in the air duct is measured using a Pitot tube, and then the air velocity is inversely calculated, and then the air volume of the air duct cross-section is calculated. By comparing the change of the air volume at both ends of the air cooler, the influence degree of the air cooler on the air supply effect is determined, and measures are taken in time to remove the deposited dust in the air cooler, etc., to ensure the air supply effect;

[0018] In this application, by the change of the differential pressure before and after the air cooler, the air volume passing through the air cooler and the resistance size are mastered, and it is judged whether the air supply volume of the working face is affected, which is convenient to take measures in time to ensure the air supply effect of the working face. Description of the drawings

[0019] Figure 1 It is a schematic structural diagram of a device for measuring the blockage of an air cooler according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection between the air duct and the differential pressure gauge connecting piece according to an embodiment of the utility model;

[0021] Description of the reference numerals:

[0022] 1. Air cooler; 2. Air inlet; 3. Air outlet; 4. Differential pressure gauge; 5. Rubber hose; 6. Air duct; 7. Nut; 8. Inner gasket; 9. Outer gasket; 10. Differential pressure gauge connecting piece. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0024] Referring to Figure 1 and Figure 2 , an air cooler blockage measurement device includes an air cooler 1, an air inlet 2, an air outlet 3, a differential pressure gauge 4, a rubber hose 5, a wind tunnel 6, a nut 7, an inner gasket 8, an outer gasket 9, and a differential pressure gauge connector 10. Wind tunnels 6 are respectively installed at both ends of the air cooler 1, and the air inlet 2 and the air outlet 3 are respectively opened on the two wind tunnels 6.

[0025] Referring to Figure 1 and Figure 2 , the connection methods of the air inlet 2 and the air outlet 3 are the same. An inner gasket 8 is provided on the inner wall of the wind tunnel 6, and the inner gasket 8 is fixed at the air inlet 2 or the air outlet 3 through a nut 7; an outer gasket 9 is provided on the outer wall of the wind tunnel 6, and the outer gasket 9 is located outside the differential pressure gauge connector 10 and is fixed at the air inlet 2 or the air outlet 3.

[0026] It should be noted that the inner gasket 8 and the outer gasket 9 have internal openings and correspond to the positions of the air inlet 2 or the air outlet 3.

[0027] Referring to Figure 2 , a differential pressure gauge connector 10 is installed on the outer walls of the two wind tunnels 6 and outside the air inlet 2 and the air outlet 3, and the differential pressure gauge connector 10 is detachably connected to the wind tunnel 6. The other end of the differential pressure gauge connector 10 is detachably connected to the rubber hose 5 through a right-angle quick connector, where the diameter of the right-angle quick connector is 10 mm, and then it is connected to the differential pressure gauge 4 through the rubber hose 5. The differential pressure gauge 4 is a "U" type differential pressure gauge.

[0028] It should be noted that the inside of the differential pressure gauge connector 10 is hollow, and a valve is provided on the differential pressure gauge connector 10 to achieve opening and closing when the air volume passes through.

[0029] The specific operation principle of this application is as follows:

[0030] During use, observe the change in the differential pressure at both ends of the air cooler through the differential pressure gauge 4. If the differential pressure is not large, it can be considered that this air cooler has little impact on the air volume.

[0031] If the pressure difference is relatively large, it is necessary to further measure the dynamic pressure of the air flow in the air ducts at both ends of the air cooler separately using a pitot tube. That is, calculate the air volume at the air inlet end of the air cooler using the dynamic pressure at the air inlet end of the air cooler, calculate the air volume at the air outlet end of the air cooler using the dynamic pressure at the air outlet end of the air cooler, compare the two air volumes, and then determine whether the air cooler needs to be repaired or flushed;

[0032] Specifically, the pitot tube measures the dynamic pressure of the air flow in the left and right air ducts 6, and inversely calculates the inlet and outlet air velocities v through the dynamic pressure h of the air flow; then after obtaining the air velocity, the air volume G can be calculated using the air velocity and the cross-sectional area of the air duct 6;

[0033] Among them, the dynamic pressure formula is:

[0034] h (dynamic pressure of the air duct) = 1 / 2ρV 2

[0035] Among them, h is the dynamic pressure in the air duct, ρ is the air density, and v is the air velocity;

[0036] Among them, the air volume G formula is:

[0037] G = vs

[0038] Among them, v is the air velocity in the air duct, and s is the cross-sectional area of the air duct;

[0039] Among them, the cross-sectional area of the air duct 6 with a diameter of 800 mm is approximately equal to 0.5 square meters. Currently, the air duct 6 with a diameter of 800 mm is the most commonly used air duct. There are also air ducts with diameters of 600 mm and 1000 mm, which are selected according to actual needs. In this application, the air duct 6 with a diameter of 800 mm is taken as an example, and in this way, the air volume at the air duct 6 can be calculated; then compare the air volumes at the air inlet and outlet of the air duct 6;

[0040] If the use of the air cooler 1 causes a decrease in the air volume, then there may be problems with the air cooler, such as dust and blockage faults, which need to be investigated and dealt with. If the difference in the air volumes at the inlet and outlet of the air duct 6 is very small, then the air cooler 1 has no impact on the air volume.

[0041] The U-shaped differential pressure gauge 4 in this application plays an initial observation role, observing whether the change in the differential pressure at the inlet and outlet ends of the air duct 6 is large. If the change is large, it is necessary to further measure the dynamic pressure at both ends using a pitot tube, and then calculate the air volumes at both ends of the air cooler 1. If the change in the air volumes at both ends is large, it means that the air cooler has a great impact on the air supply effect, and further treatment is required. The pitot tube can further measure the specific numerical value of the change in the air volume to ensure accuracy.

[0042] This application grasps the air volume passing through the air cooler 1 and the resistance size through the change in the differential pressure before and after the air cooler 1, judges whether the air supply volume of the working face is affected, and is convenient for taking timely measures to ensure the air supply effect of the working face.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air cooler blockage measuring device, comprising an air cooler (1), characterized in that: Wind tubes (6) are connected to both ends of the air cooler (1), wherein small holes are respectively opened on the two wind tubes (6), and differential pressure gauge connectors (10) are installed at the small holes. The two differential pressure gauge connectors (10) can be detachably connected to the rubber tubes (5), and the rubber tubes (5) are both connected to the differential pressure gauge (4).

2. The air cooler blockage measuring device according to claim 1, characterized in that: The differential pressure gauge connecting piece (10) is hollow inside and communicates with the inside of the corresponding wind tube (6).

3. The air cooler blockage measuring device according to claim 1, characterized in that: The differential pressure gauge connector (10) and the rubber tube (5) are detachably connected via a right-angle quick-plug connector, wherein the diameter of the right-angle quick-plug connector is 10 mm.

4. The air cooler blockage measuring device according to claim 1, characterized in that: The differential pressure gauge connecting piece (10) is provided with a valve.

5. The air cooler blockage measuring device according to claim 1, characterized in that: An inner gasket (8) is provided on the inner wall of the wind tube (6), wherein the inner gasket (8) is fixed at the corresponding small hole by a nut (7); An outer gasket (9) is provided on the outer wall of the wind tube (6), wherein the outer gasket (9) is located outside the differential pressure gauge connecting piece (10) and is fixed at the corresponding small hole.

6. The air cooler blockage measuring device according to claim 5, characterized in that: The inner gasket (8) and the outer gasket (9) have openings inside, which correspond to the corresponding small holes.

7. The air cooler blockage measuring device according to claim 1, characterized in that: The differential pressure gauge (4) is a "U" type differential pressure gauge.

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