CN205209631U - A guiding device that is used for reverberation method to measure efflux noise under water - Google Patents
A guiding device that is used for reverberation method to measure efflux noise under water Download PDFInfo
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- CN205209631U CN205209631U CN201520996730.1U CN201520996730U CN205209631U CN 205209631 U CN205209631 U CN 205209631U CN 201520996730 U CN201520996730 U CN 201520996730U CN 205209631 U CN205209631 U CN 205209631U
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- mozzle
- water inlet
- inlet pipe
- guiding device
- pipe
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Abstract
The utility model provides a guiding device that is used for reverberation method to measure efflux noise under water, including inlet tube, honeycomb duct, steady flow box, altitude controller, outlet pipe, in non - noise elimination pond or water tank were inserted to inlet tube one end, the honeycomb duct was connected to the other end of inlet tube, the inlet tube is connected to the one end of honeycomb duct, and steady flow box is connected to the other end of honeycomb duct, steady flow box is fixing the honeycomb duct, and steady flow box places on altitude controller, altitude controller can be in vertical direction free height -adjusting, the outlet pipe is located steady flow box's side, this a guiding device that is used for reverberation method to measure efflux noise under water can make when adopting the reverberation method to measure the radiation acoustical power of efflux noise under water, and water in non - noise elimination pond or the water tank is long -pending can not to be increased because of the efflux, and fluidic radiated noise can not propagate to the external world, and external noise can not propagated to non - noise elimination pond or the water tank in yet, does not influence the measurement of efflux noise radiation acoustical power under water.
Description
Technical field
The utility model relates to a kind of guiding device, particularly relates to a kind of guiding device measuring submerged jet noise for reverberation method, belongs to acoustic measurement field.
Background technology
The radiated of submerged jet noise generally adopts reverberation method to measure, by non-anechoic tank, or water tank are divided into fluerics and measurement zone, by nozzle jet water course in fluerics, in measurement zone, utilize one or more nautical receiving set to gather the acoustic pressure of space average, after having revised the room constant of non-anechoic tank, or water tank, just the radiated because of jet blending generation noise is obtained, but when using reverberation method to measure the radiated of submerged jet noise, also have the following disadvantages: one be non-anechoic tank, or water tank fluerics with measurement zone be communicated with, when water is injected into fluerics by nozzle, the measurement zone water level of non-anechoic tank, or water tank can be caused to raise, water volume in non-anechoic tank, or water tank is increased, because room constant is relevant with volume to the surface area of non-anechoic tank, or water tank, water volume will have influence on the correction of room constant after increasing, cause measured jet noise radiated inaccurate, two be carry out low flow velocity jet noise radiated measure time, then require to reduce the water volume in non-anechoic tank, or water tank, the space average acoustic density gathered to make nautical receiving set is higher, but it is generally adopt submersible pump to extract that the water volume that current non-anechoic tank, or water tank are taked reduces way, the tube wall vibration noise that submersible pump causes, periodically water suction microseismic noise have a significant impact to the measuring process of jet noise, three is the measurements carrying out jet noise radiated after non-anechoic tank, or water tank are full of water by employing, although the method can make the water volume in non-anechoic tank, or water tank not change, but water overflows, when sidewall flows down from non-anechoic tank, or water tank, the characteristic impedance of pool wall or tank wall can be changed, make the correction of room constant in reverberation method inaccurate, and water is when flowing down along pool wall or tank wall, easy formation splashing noise, has an impact to the radiated measurement of the jet noise in non-anechoic tank, or water tank.
Summary of the invention
The purpose of this utility model is to provide one is measured submerged jet noise guiding device for reverberation method, can solve the variation issue of water level in existing non-anechoic tank, when adopting reverberation method to measure jet noise radiated at present or water tank.
The purpose of this utility model is achieved in that and comprises water inlet pipe, mozzle, current stabilization case, height adjuster and rising pipe, described current stabilization case is arranged on height adjuster upper end, in the pond that one end of described water inlet pipe is inserted into non-noise elimination or water tank, the other end of water inlet pipe is connected with one end of mozzle, the other end of described mozzle is connected with current stabilization case and mozzle stainless steel fixture is fixed on current stabilization case, described current stabilization case is that side is provided with row's stainless steel interface, and the quantity of stainless steel interface is at least 12, each stainless steel interface is all connected with rising pipe, described water inlet pipe and quantity equal with the quantity of mozzle is all at least 8 and in a row arranges, each described water inlet pipe is provided with the first ball stop valve, each mozzle is provided with threeway and the second ball stop valve.
The utility model also comprises some architectural features like this:
1. the direction framework that height adjuster described in is made up of four vertical screw-thread steels and four horizontal screw-thread steels, four angles of the bottom of quadra are provided with A-frame, four angles of the bottom of described current stabilization case are provided with stationary pipes, and the vertical screw-thread steel of described quadra to stretch in corresponding stationary pipes and is fixed by lifting bolt.
2. water inlet pipe described in and mozzle are all igelite stereoplasm tubes, and rising pipe is tygon wired hose.
3. the nominal outside diameter of water inlet pipe and mozzle is 20mm, wall thickness 2.5mm; The nominal outside diameter of rising pipe is 22mm, wall thickness 3.5mm.
4. the quantity of water inlet pipe is 10, and the quantity of mozzle is 10, and the quantity of rising pipe is 13.
Compared with prior art, the beneficial effects of the utility model are: the utility model is connected with non-anechoic tank, or water tank by means of only mozzle, the inner water-filling of mozzle, outside is air, belong to the acoustical waveguide on absolute soft border, below the first rank cutoff frequency, can not propagation plane ripple in this mozzle, at 0Hz to the first rank cutoff frequency, do not have sound wave in non-anechoic tank, or water tank, can be transmitted to the external world through mozzle, extraneous sound wave can not enter in non-anechoic tank, or water tank by mozzle; The bottom of height adjuster adopts triangular supports structure, and be only point cantact with ground, the vibration having isolated ground well affects current stabilization case; Mozzle and water inlet pipe are all igelite stereoplasm tube, and flow resistance is little, fast by making the water increased in non-anechoic tank, or water tank be guided to current stabilization case because of jet, can be discharged by rising pipe; This is used for the guiding device that reverberation method measures submerged jet noise, can water level in the non-anechoic tank, of flexible or water tank, under same flow velocity, if reduce the height of current stabilization case, just can reduce the water level in non-anechoic tank, or water tank, improve the acoustic density in non-anechoic tank, or water tank, test signal to noise ratio (S/N ratio) is increased, is convenient to the measurement carrying out low flow velocity jet noise radiated; This is used for the guiding device that reverberation method measures submerged jet noise, is unpowered guiding device, can not produces extra vibration and noise, and the test not affecting jet noise radiated is measured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 of the present utility modelly overlooks direction schematic diagram;
Fig. 3 is side-looking direction of the present utility model schematic diagram;
Fig. 4 is the structural representation of mozzle stainless steel fixture of the present utility model;
Fig. 5 is the structural representation of height adjuster of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Composition graphs 1 to Fig. 5, the utility model comprises water inlet pipe 1, first ball stop valve 11, pipe 12, pipe 13, elbow 14, mozzle 2, threeway 21, ball stop valve 22, second ball stop valve 23, pipe 24, elbow 25, pipe 26, pipe 27, pipe 28, current stabilization case 3, stationary pipes 31, lifting bolt 32, stainless steel interface 33, stainless steel clip 34, stainless steel clip 35, steel pipe 36, height adjuster 4, screw-thread steel 41, screw-thread steel 42, triangular supports 43, rising pipe 5.
Measure a guiding device for submerged jet noise for reverberation method, comprise water inlet pipe, mozzle, current stabilization case, height adjuster, rising pipe, one end of described water inlet pipe is in non-anechoic tank, or water tank, and the other end of water inlet pipe connects with mozzle; One end of described mozzle taps into water pipe, and the other end of mozzle is connected with current stabilization case; The lateral opening hole of described current stabilization case, installs stainless steel interface, soldering stainless steel fixture in current stabilization case, welded still pipe on the corner outside current stabilization case; Described height adjuster can place current stabilization case, and the height of energy up-down adjustment current stabilization case; Described rising pipe is connected with the stainless steel interface of current stabilization case;
Described water inlet pipe is made up of igelite stereoplasm tube, and ball stop valve is installed in one end of water inlet pipe;
Described mozzle is made up of igelite stereoplasm tube, and ball stop valve is installed in one end of mozzle, and threeway and ball stop valve are installed in mozzle top;
Described water inlet pipe is vertically placed, and adopt elbow to be connected with mozzle, described mozzle utilizes stainless steel fixture to be fixed on current stabilization case;
Described current stabilization case is made up of iron plate, and cuboidal configuration, without top cover; Steel pipe on corner outside current stabilization case has the threaded hole mated with lifting bolt;
Described height adjuster is welded by the screw-thread steel of four vertical screw-thread steels and four levels and makes, four base angles adopt three screw-thread steels to weld the triangular supports made and support, screw-thread steel vertical on height adjuster carries out groove milling, offers the shrinkage pool mated with lifting bolt aperture in groove with certain spacing;
On described height adjuster, four vertical screw-thread steels just can insert in the steel pipe outside current stabilization case on corner, when lifting bolt outside current stabilization case on four angles screws in, lifting bolt is shelved in the shrinkage pool of vertical screw-thread steel of height adjuster, and current stabilization case just can be placed on height adjuster;
Stainless steel interface on described current stabilization case is the middle frustum cone structure with through hole, and the external diameter of round platform upper bottom surface is slightly less than the external diameter of bottom surface, and the bottom surface of round platform is welded on current stabilization case, and rising pipe connects stainless steel interface.
Non-anechoic tank, or water tank are put in one end of water inlet pipe, the height of adjustment current stabilization case, the stainless steel interface of current stabilization case is the water level that non-anechoic tank, or water tank will adjust, close the ball stop valve of water inlet pipe one end, close the ball stop valve of mozzle one end, open the ball stop valve in mozzle threeway, water filling is carried out by this ball stop valve, after water overflows, close the ball stop valve in mozzle threeway, open the ball stop valve of the other end on ball stop valve on water inlet pipe and mozzle, namely water in non-anechoic tank, or water tank enter current stabilization case, when arriving the position of stainless steel interface, discharge through rising pipe.
Measure a guiding device for submerged jet noise for reverberation method, comprise water inlet pipe 1, mozzle 2, current stabilization case 3, height adjuster 4 and rising pipe 5; One end of water inlet pipe 1 is inserted in non-anechoic tank, or water tank, and water inlet pipe 1 is made up of ball stop valve 11, pipe 12, pipe 13 and elbow 14, and install the first ball stop valve 11 in the middle of pipe 12 and pipe 13, water inlet pipe 1 is vertically placed, and adopts elbow 14 to be arranged on mozzle 2; Mozzle 2 is made up of threeway 21, second ball stop valve 22, ball stop valve 23, pipe 24, elbow 25, pipe 26, pipe 27 and pipe 28, threeway 21 indirectly in pipe 28 and pipe 24, the other end adapter 27 of threeway 21, the other end of pipe 27 is received stop valve 22, pipe 24 and pipe 26 adopt elbow 25 to be connected, pipe 28 and pipe 24 horizontal positioned, and pipe 26 and pipe 27 are vertically placed, the opening of ball stop valve 22 is straight up, and the other end of pipe 26 installs ball stop valve 23; Current stabilization case 3 adopts steel plate to make, for cuboidal configuration, without top cover, interior welds stainless steel fixture, stainless steel fixture is made up of stainless steel clip 34, stainless steel clip 35 and steel pipe 36, one end of steel pipe 36 is welded on current stabilization case 3 inside, the other end soldering stainless steel clip 35 of steel pipe 36, four base angles place of current stabilization case 3 is welded and fixed pipe 31, stationary pipes 31 has threaded hole, aperture is mated with lifting bolt 32, and each stationary pipes 31 installs a lifting bolt 32, the lateral opening hole soldering stainless steel interface 33 of current stabilization case 3; Height adjuster 4 is welded by screw-thread steel 41, screw-thread steel 42 and triangular supports 43 and makes, screw-thread steel 41 is made up of four screw-thread steels, vertical placement, screw-thread steel 42 is made up of four screw-thread steels, horizontal positioned, triangular supports 43 is made up of three screw-thread steels, and screw-thread steel 41 carries out groove milling, offers the shrinkage pool mated with lifting bolt 32 in groove with certain spacing; Rising pipe 5 is connected with stainless steel interface 33.
Water inlet pipe 1 is inserted in non-anechoic tank, or water tank, mozzle 2 is connected with water inlet pipe 1, utilize bolt by the bolt hole of stainless steel clip 34 and stainless steel clip 35, stainless steel clip 34 and stainless steel clip 35 are locked, mozzle 2 is just fixed on current stabilization case 3, the screw-thread steel 41 of height adjuster 4 is inserted in the stationary pipes 31 of current stabilization case 3, current stabilization case 3 is just shelved on height adjuster 4, after determining in non-anechoic tank, or water tank the water level needing to adjust, adjustment current stabilization case 3, the stainless steel interface 33 on current stabilization case 3 is made to reach the position of needs, tighten lifting bolt 32, lifting bolt 32 screws in in the shrinkage pool in the screw-thread steel 41 in height adjuster 4, then current stabilization case 3 is just fixed on height adjuster 4, rising pipe 5 is connected with stainless steel interface 33.
The ball stop valve 11 of water inlet pipe 1 is got to closed condition, the ball stop valve 23 of mozzle 2 is got to closed condition, open the ball stop valve 22 in mozzle 2, water is injected into ball stop valve 22, after filling water, closes ball stop valve 22, open ball stop valve 11 and ball stop valve 23, water in non-anechoic tank, or water tank will be injected in current stabilization case 3 by water inlet pipe 1 and mozzle 2, and when the water level in current stabilization case 3 reaches the position of stainless steel interface 33, water is discharged through rising pipe 5 by stainless steel interface 33.
In this embodiment, the quantity of water inlet pipe 1 is 10, and the quantity of mozzle 2 is 10, and the quantity of rising pipe is 13;
In this embodiment, first rank cutoff frequency of mozzle 2 is 39kHz, sound wave in inherent 0Hz to the 39kHz scope of non-anechoic tank, or water tank, do not blaze abroad by mozzle 2, extraneous sound wave also can not be transmitted in non-anechoic tank, or water tank, and this bandwidth covers the noise radiation frequency range of the water jet under normal pressure.
The utility model discloses a kind of guiding device measuring submerged jet noise for reverberation method, comprise water inlet pipe, mozzle, current stabilization case, height adjuster, rising pipe; Described water inlet pipe one end is inserted in non-anechoic tank, or water tank, the other end of water inlet pipe connects mozzle, one end of described mozzle connects water inlet pipe, the other end of mozzle connects current stabilization case, described current stabilization case is fixed wtih mozzle, current stabilization case is placed on height adjuster, and described height adjuster can in the vertical direction free adjustment height, and described rising pipe is positioned at the side of current stabilization case; This is used for the guiding device that reverberation method measures submerged jet noise, when can make to adopt reverberation method to measure the radiated of submerged jet noise, water volume in non-anechoic tank, or water tank can not increase because of jet, the radiated noise of jet can not be transmitted to the external world, extraneous noise also can not be transmitted in non-anechoic tank, or water tank, does not affect the measurement of submerged jet noise radiation acoustical power.
A kind of guiding device measuring submerged jet noise for reverberation method, comprise water inlet pipe, mozzle, current stabilization case, height adjuster, rising pipe, described water inlet pipe one end is inserted in non-anechoic tank, or water tank, the other end of water inlet pipe connects mozzle, one end of described mozzle connects water inlet pipe, the other end of mozzle connects current stabilization case, described current stabilization case is fixed wtih mozzle, current stabilization case is placed on height adjuster, the height of the adjustable current stabilization case of described height adjuster, and then the water level controlled in non-anechoic tank, or water tank, described rising pipe is positioned at current stabilization case side, water inlet pipe and mozzle are made up of igelite stereoplasm tube, water inlet pipe are provided with ball stop valve, mozzle are provided with ball stop valve and threeway, rising pipe is made up of tygon wired hose, the nominal outside diameter of water inlet pipe and mozzle is 20mm, wall thickness 2.5mm, the nominal outside diameter of rising pipe is 22mm, wall thickness 3.5mm, there is perforate the side of current stabilization case, connects rising pipe, the bottom of height adjuster is made up of triangular supports, and is point cantact between ground, current stabilization case is cuboidal configuration, and without top cover, material is stainless steel.
Claims (9)
1. measure the guiding device of submerged jet noise for reverberation method for one kind, it is characterized in that: comprise water inlet pipe, mozzle, current stabilization case, height adjuster and rising pipe, described current stabilization case is arranged on height adjuster upper end, in the pond that one end of described water inlet pipe is inserted into non-noise elimination or water tank, the other end of water inlet pipe is connected with one end of mozzle, the other end of described mozzle is connected with current stabilization case and mozzle stainless steel fixture is fixed on current stabilization case, described current stabilization case is that side is provided with row's stainless steel interface, and the quantity of stainless steel interface is at least 12, each stainless steel interface is all connected with rising pipe, described water inlet pipe and quantity equal with the quantity of mozzle is all at least 8 and in a row arranges, each described water inlet pipe is provided with the first ball stop valve, each mozzle is provided with threeway and the second ball stop valve.
2. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 1, it is characterized in that: the direction framework that described height adjuster is made up of four vertical screw-thread steels and four horizontal screw-thread steels, four angles of the bottom of quadra are provided with A-frame, four angles of the bottom of described current stabilization case are provided with stationary pipes, and the vertical screw-thread steel of described quadra to stretch in corresponding stationary pipes and is fixed by lifting bolt.
3. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 1 and 2, it is characterized in that: described water inlet pipe and mozzle are all igelite stereoplasm tubes, rising pipe is tygon wired hose.
4. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 1 and 2, is characterized in that: the nominal outside diameter of water inlet pipe and mozzle is 20mm, wall thickness 2.5mm; The nominal outside diameter of rising pipe is 22mm, wall thickness 3.5mm.
5. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 3, is characterized in that: the nominal outside diameter of water inlet pipe and mozzle is 20mm, wall thickness 2.5mm; The nominal outside diameter of rising pipe is 22mm, wall thickness 3.5mm.
6. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 1 and 2, it is characterized in that: the quantity of water inlet pipe is 10, the quantity of mozzle is 10, and the quantity of rising pipe is 13.
7. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 3, it is characterized in that: the quantity of water inlet pipe is 10, the quantity of mozzle is 10, and the quantity of rising pipe is 13.
8. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 4, it is characterized in that: the quantity of water inlet pipe is 10, the quantity of mozzle is 10, and the quantity of rising pipe is 13.
9. a kind of guiding device measuring submerged jet noise for reverberation method according to claim 5, it is characterized in that: the quantity of water inlet pipe is 10, the quantity of mozzle is 10, and the quantity of rising pipe is 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520996730.1U CN205209631U (en) | 2015-12-03 | 2015-12-03 | A guiding device that is used for reverberation method to measure efflux noise under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520996730.1U CN205209631U (en) | 2015-12-03 | 2015-12-03 | A guiding device that is used for reverberation method to measure efflux noise under water |
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| Publication Number | Publication Date |
|---|---|
| CN205209631U true CN205209631U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520996730.1U Withdrawn - After Issue CN205209631U (en) | 2015-12-03 | 2015-12-03 | A guiding device that is used for reverberation method to measure efflux noise under water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205209631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318965A (en) * | 2015-12-03 | 2016-02-10 | 哈尔滨工程大学 | Flow guide device used for measuring underwater jet flow noises by reverberation method |
| CN108547797A (en) * | 2018-03-21 | 2018-09-18 | 哈尔滨工程大学 | A kind of device inhibiting centrifugal pump jet source pressure fluctuation |
-
2015
- 2015-12-03 CN CN201520996730.1U patent/CN205209631U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318965A (en) * | 2015-12-03 | 2016-02-10 | 哈尔滨工程大学 | Flow guide device used for measuring underwater jet flow noises by reverberation method |
| CN105318965B (en) * | 2015-12-03 | 2018-04-17 | 哈尔滨工程大学 | A kind of guiding device for reverberation method measurement submerged jet noise |
| CN108547797A (en) * | 2018-03-21 | 2018-09-18 | 哈尔滨工程大学 | A kind of device inhibiting centrifugal pump jet source pressure fluctuation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160504 Effective date of abandoning: 20180417 |