CN110487518B - Nozzle spraying uniformity performance testing device - Google Patents
Nozzle spraying uniformity performance testing device Download PDFInfo
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- CN110487518B CN110487518B CN201910534507.8A CN201910534507A CN110487518B CN 110487518 B CN110487518 B CN 110487518B CN 201910534507 A CN201910534507 A CN 201910534507A CN 110487518 B CN110487518 B CN 110487518B
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The utility model provides a shower nozzle splash uniformity capability test device, includes a plurality of aqua storage tanks, and every aqua storage tank bottom is connected and is set up the overflow pipe, the delivery port below of overflow pipe is equipped with the metering tank, the metering tank bottom is equipped with the discharge orifice, at least some of metering tank is transparent material, and the metering tank side is equipped with the scale. In the test process, the flow of each water pipe can be calculated by reading the water level height in each metering tank after the water spraying is stable. Compared with the existing splash test device, the device has the advantages of more accurate measurement, less time consumption and less manpower consumption.
Description
Technical Field
The invention relates to the field of cooling towers, in particular to a device for testing the spraying uniformity of a spray head.
Background
The water distribution system of the cooling tower is used for uniformly spraying the hot water to be cooled into fine water drops on the upper surface of the water spraying filler through the water distribution system. The spray head is an important component of a water distribution system, the uniformity of the splashing performance of the spray head is extremely important, and the spray head is required to spray water on the water spraying filler as uniformly as possible.
The splash test device used in the laboratory at present is shown in figure 1 and comprises a spraying system and a water receiving system, wherein the spraying system is provided with a water storage tank 11, a water pump 12, a control adjusting gate valve 13, a water level gauge 14 and a pressure gauge 15 which are connected in sequence through a water distribution pipe 16, and a test spray head 10 is arranged at the outlet of the water distribution pipe 16. The pressure-stabilizing and steady-flow water flow is ensured to flow through the spray head by controlling the adjusting gate valve 13, the water level gauge 14 and the pressure gauge 15. The water receiving system is generally configured as a rectangular conventional water storage tank 17, the conventional water storage tank 17 is divided into a plurality of square grids, and a downward drainage device such as a lower drainage hole 18 is arranged below the square grids. A return water collecting tank 19 is arranged below the lower discharge hole 18, and return water collected by the return water collecting tank 19 can be sent back to the water storage tank 11 through a return water pipeline.
The spraying system ensures that a stable water pressure is formed for the spray head, and the water receiving system is used for measuring the splashing radius and the splashing uniformity formed by spraying water drops. The test device is used for testing the discharge capacity, the splashing range and the splashing uniformity of the spray head.
The water receiving system of the splash test device used in the laboratory at present is a rectangular water receiving tank, the water receiving tank is divided into square grids of a plurality of squares, lower drainage holes are arranged below the square grids, and an overflow pipe is connected below each lower drainage hole. During the test, when the water flow is stable, the flow of the overflow pipe connected below each square is measured in a certain time through the measuring cylinder and the stopwatch, namely the flow of each water receiving square in the splashing range. And calculating the uniform distribution coefficient of the spray heads according to the flow of each water receiving grid.
The structural design of the existing laboratory water receiving system measures the flow of each square lattice through a measuring cylinder and a stopwatch, and the testing device takes a long time to receive each lattice of water every time an experiment is carried out, so that the testing device has the reading error of the measuring cylinder and the reading error of time. Time and labor are consumed, and the error is large.
Disclosure of Invention
In view of the above situation, in order to solve the problems in the prior art, the invention provides a device for testing the uniform spraying performance of a nozzle, which comprises a plurality of water storage tanks, wherein the bottom end of each water storage tank is connected with a flow-through pipe, a metering tank is arranged below a water outlet of the flow-through pipe, the bottom of the metering tank is provided with a drainage hole, at least one part of the metering tank is made of a transparent material, and the side surface of the metering tank is provided with scales.
Preferably, the overflow pipe is L-shaped structure, including horizontal overflow pipe and vertical overflow pipe, the entry end of horizontal overflow pipe and the bottom intercommunication of aqua storage tank, the exit end of horizontal overflow pipe passes through the return bend and communicates with the entry end of vertical overflow pipe, and the exit end of vertical overflow pipe is located the metering tank top.
Preferably, the outlet end of the horizontal flow-through pipe is provided with an L-shaped baffle.
Preferably, the baffle includes vertical baffle and horizontal baffle, vertical baffle locates between aqua storage tank and vertical overfall pipe and the metering tank, horizontal baffle locates vertical overfall pipe and metering tank top.
Preferably, the metering slot is of a square configuration.
Preferably, the water storage tank is of a square structure.
Preferably, the plurality of water storage tanks are of a split structure, and the plurality of water storage tanks are arranged in parallel and are fixedly connected with each other.
Preferably, the plurality of water storage tanks are of an integral elongated slot structure, and a plurality of partitions are arranged in the elongated slot structure to divide the integral elongated slot structure into a plurality of square grids.
Preferably, the water storage tank is arranged below a spraying system test spray head of the splashing test device.
After the technology provided by the invention is adopted, the device for testing the spraying uniformity of the spray head has the following beneficial effects:
1) the water receiving system is structurally improved, and in the test process, the flow of each water pipe can be calculated by reading the height of the water level in each metering tank after water spraying is stable. Compared with the existing splash test device, the device has the advantages of more accurate measurement, less time consumption and less manpower consumption.
2) The structure is simple and reasonable, the use is convenient, and the time, the labor and the worry are saved; the appearance is delicate, manual errors are reduced, and the overall accuracy is improved; the installation is convenient and reliable, and the whole body is stable and durable.
Drawings
FIG. 1 is a schematic view of a current laboratory splash test apparatus;
FIG. 2 is a top view of the nozzle spray uniformity performance testing apparatus of the present application;
FIG. 3 is a left side view of the device for testing the spray uniformity of the spray head of the present application;
FIG. 4 is a front view of the device for testing the spraying uniformity of the spray head of the present application;
fig. 5 is an enlarged view of a portion a of fig. 4.
Detailed Description
The present invention will be described in further detail with reference to embodiments shown in the drawings. The described embodiments include various specific details to aid understanding, but they are to be construed as merely illustrative, and not a full and partial description of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Meanwhile, in order to make the description more clear and concise, a detailed description of functions and configurations well known in the art will be omitted.
As shown in fig. 1-5, a nozzle splash uniformity performance testing device comprises a plurality of water storage tanks 2, wherein an overflow pipe 3 is connected and arranged at the bottom end of each water storage tank 2, a metering tank 4 is arranged below a water outlet of the overflow pipe 3, a drain hole 40 is arranged at the bottom of the metering tank 4, at least one part of the metering tank 4 is made of a transparent material, and scales 41 are arranged on the side surface of the metering tank 4. The water storage tank 2 is arranged below a spray system test spray head of the splash test device.
The overflow pipe 3 is an L-shaped structure and comprises a horizontal overflow pipe 31 and a vertical overflow pipe 32, the inlet end of the horizontal overflow pipe 31 is communicated with the bottom of the water storage tank 2, the outlet end of the horizontal overflow pipe 31 is communicated with the inlet end of the vertical overflow pipe 32 through a bent pipe, and the outlet end of the vertical overflow pipe 32 is arranged above the metering tank 4.
The outlet end of the horizontal flow-through pipe 31 is provided with an L-shaped baffle 36.
The baffle 36 comprises a vertical baffle 361 and a horizontal baffle 362, the vertical baffle 361 is arranged between the water storage tank 2 and the vertical flow pipe 32 and the metering tank 4, and the horizontal baffle 362 is arranged above the vertical flow pipe 32 and the metering tank 4.
The metering tank 4 is of a square structure.
The water storage tank 2 is of a square structure.
The plurality of water storage tanks 2 are of split structures, and the plurality of water storage tanks 2 are arranged in parallel and are fixedly connected with each other. Or, the plurality of water storage tanks 2 are of an integral elongated slot structure, and a plurality of partitions are arranged in the elongated slot structure to divide the integral elongated slot structure into a plurality of square grids.
According to the even capability test device of shower nozzle splash of this application, to current water receiving system the innovation in the aspect of the structure, in the experimentation, as long as read the water level height in each check metering tank after the trickle is stable and just can calculate the flow of each water pipe. Compared with the existing splash test device, the device has the advantages of more accurate measurement, less time consumption and less manpower consumption.
The device for testing the spraying uniformity of the spray head has the advantages of simple and reasonable structure, convenience in use, time and labor saving and worry saving; the appearance is delicate, manual errors are reduced, and the overall accuracy is improved; the installation is convenient and reliable, and the whole body is stable and durable.
The device for testing the spraying uniformity of the spray head is used for measuring the discharge capacity, the spraying range and the spraying uniformity of the spray head. The main influence factor of the discharge quantity of the test spray head in the test device is water pressure, so that the water receiving system is not greatly influenced by the innovation of the water receiving system. And the test for the sputtering range and the sputtering uniformity has great influence.
The uniformity test of the spray head is determined by measuring the uniform distribution coefficient of the spray head, and the uniform distribution coefficient of the spray head is the mean square error of the amount of water splashed and fallen on each unit cell in the water storage tank from the mathematical point of view.
A metering groove 4 with a square cross section is arranged below the overflow pipe 3 below each water storage tank 2 grid, a small hole with a fixed size, namely a downward discharging device consisting of a discharging hole 40, is also arranged below the metering groove 4, and scales 41 are marked on the side surface of the metering groove 4, so that the water level height is conveniently read. The water storage tank is splashed down to the water that the shower nozzle splash got off, flows to the metering tank through the overflow pipe below the square, and in the metering tank, because hydraulic effect, the water level can be stabilized at certain height. In the test process, after the water flow is stable, the scales of the water level in each metering tank are read, and the splashing water flow of each water storage tank square can be accurately calculated according to the water pressure obtained by the water level scales and the design flow coefficient of the metering device.
And finally, calculating the uniform distribution coefficient of the spray head according to the splashing water flow of each square. On the other hand, the splashing range can also be determined by visually seeing the squares without water drop and then determining the specific splashing range according to the size of the squares.
According to the utility model provides a shower nozzle splash even capability test device, owing to no longer need use the graduated flask to carry out the manual work volume and get, can be thinner with the square check division in the aqua storage tank, the square sectional area is the quarter of original square sectional area, and the collection mode precision of the water yield that spatters that receives to each square correspondingly is higher.
Through setting up horizontal overflow pipe 31 and vertical overflow pipe 32, can stagger certain distance with the experimental shower nozzle of metering tank 4 and aqua storage tank 2 and top, avoid metering tank 4 to receive the influence of experimental shower nozzle water spray, ensure that the water that it accepted all comes from the overflow pipe to promote the accuracy of test, obtain more accurate result.
Through setting up baffle 36, be equipped with a cross-section at the end of the water pipe horizontal direction that overflows and be the baffle of L shape, the baffle keeps off the one side and the top surface that is close to the shower nozzle that have measured the basin, avoids measuring tank 4 to receive the influence of experimental shower nozzle direction water smoke, prevents that the shower nozzle water that splashes from getting into the measuring tank in order to pass through the mode outside the flow pipe, further promotes the accuracy of test, obtains more accurate result.
The terms "upper", "lower" or "above", "below" or the like are used herein in a relative relationship with respect to a normal use in a placed state, i.e., a positional relationship as generally shown in the drawings of the present application. When the placement state changes, for example, when the placement state is turned over, the corresponding positional relationship should be changed accordingly to understand or implement the technical solution of the present application.
Claims (5)
1. The utility model provides a shower nozzle splash uniformity capability test device, its characterized in that includes a plurality of aqua storage tanks (2), and every aqua storage tank (2) bottom is connected and is set up overflow pipe (3), the delivery port below of overflow pipe (3) is equipped with metering tank (4), metering tank (4) bottom is equipped with discharge orifice (40), at least some of metering tank (4) are transparent material, and metering tank (4) side is equipped with scale (41), overflow pipe (3) are L shape structure, including horizontal overflow pipe (31) and vertical overflow pipe (32), the entry end of horizontal overflow pipe (31) and the bottom of aqua storage tank (2) communicate, and the exit end of horizontal overflow pipe (31) passes through the return bend and the entry end intercommunication of vertical overflow pipe (32), and the exit end of vertical overflow pipe (32) is located metering tank (4) top, the exit end of horizontal overflow pipe (31) is equipped with L shape baffle (36), the baffle (36) comprises a vertical baffle (361) and a horizontal baffle (362), the vertical baffle (361) is arranged between the water storage tank (2) and the vertical flow-through pipe (32) and the metering tank (4), the horizontal baffle (362) is arranged above the vertical flow-through pipe (32) and the metering tank (4), the water storage tanks (2) are of an integral long groove structure, and a plurality of partitions are arranged in the long groove structure to divide the integral long groove structure into a plurality of square grids.
2. The device for testing the uniform spraying performance of the spray head according to claim 1, wherein the metering tank (4) is of a square structure.
3. The device for testing the uniform spraying performance of the spray head as claimed in claim 1, wherein the water storage tank (2) is of a square structure.
4. The device for testing the uniform spraying performance of the spray head according to claim 1, wherein the plurality of water storage tanks (2) are of a split structure, and the plurality of water storage tanks (2) are arranged in parallel and fixedly connected with each other.
5. The spray nozzle splashing uniformity performance testing device of claim 1, wherein the water storage tank (2) is arranged below a spray system test spray nozzle of the splashing test device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534507.8A CN110487518B (en) | 2019-06-20 | 2019-06-20 | Nozzle spraying uniformity performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534507.8A CN110487518B (en) | 2019-06-20 | 2019-06-20 | Nozzle spraying uniformity performance testing device |
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| Publication Number | Publication Date |
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| CN110487518A CN110487518A (en) | 2019-11-22 |
| CN110487518B true CN110487518B (en) | 2021-07-16 |
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| CN201910534507.8A Active CN110487518B (en) | 2019-06-20 | 2019-06-20 | Nozzle spraying uniformity performance testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113465945B (en) * | 2021-07-13 | 2024-05-10 | 中汽研汽车试验场股份有限公司 | Intelligent network-connected automobile multifunctional test system and test method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59228191A (en) * | 1983-06-10 | 1984-12-21 | 株式会社東芝 | Spray device for head of nuclear reactor |
| CN203479547U (en) * | 2013-06-14 | 2014-03-12 | 中国农业科学院植物保护研究所 | Portable spray uniformity test panel |
| CN103792079A (en) * | 2014-01-25 | 2014-05-14 | 内蒙古科技大学 | Device for testing nozzle characteristics |
| CN109855847A (en) * | 2017-11-29 | 2019-06-07 | 西北农林科技大学 | A kind of double-current method nozzle uniformity spraying device |
-
2019
- 2019-06-20 CN CN201910534507.8A patent/CN110487518B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59228191A (en) * | 1983-06-10 | 1984-12-21 | 株式会社東芝 | Spray device for head of nuclear reactor |
| CN203479547U (en) * | 2013-06-14 | 2014-03-12 | 中国农业科学院植物保护研究所 | Portable spray uniformity test panel |
| CN103792079A (en) * | 2014-01-25 | 2014-05-14 | 内蒙古科技大学 | Device for testing nozzle characteristics |
| CN109855847A (en) * | 2017-11-29 | 2019-06-07 | 西北农林科技大学 | A kind of double-current method nozzle uniformity spraying device |
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| CN110487518A (en) | 2019-11-22 |
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