CN102841216A - Portable speed measuring device for ship - Google Patents
Portable speed measuring device for ship Download PDFInfo
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- CN102841216A CN102841216A CN201210364122XA CN201210364122A CN102841216A CN 102841216 A CN102841216 A CN 102841216A CN 201210364122X A CN201210364122X A CN 201210364122XA CN 201210364122 A CN201210364122 A CN 201210364122A CN 102841216 A CN102841216 A CN 102841216A
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Abstract
The invention discloses a portable speed measuring device for a ship. The portable speed measuring device comprises a measurement device, an underwater towed body, a towrope, a return pipe and a pressure pipe, wherein the measurement device is hung on a ship board taking speed measurement; the underwater towed body is arranged in water; the measurement device and the underwater towed body are connected through the return pipe and the pressure pipe; and the underwater towed body is connected with the ship taking the speed measurement through the towrope at the same time, so as to lead the underwater towed body to sail synchronously with the ship taking the speed measurement. When the speed measurement is taken, the underwater towed body collects dynamic pressure of fluid moving relative to the ship, and the dynamic pressure passes through an internal loop of the speed measuring device to be converted to static pressure, so that altitude difference between liquid levels at two ends of an inverted U-shaped pipe of the detection device is formed and can be visually displayed on a ruler arranged in the detection device. According to Bernoulli theory, when the altitude difference at the two ends of the inverted U-shaped pipe is h, v=, and scale on the rule directly corresponds to the sailing speed for checking the sailing speed. The portable speed measuring device provided by the invention is simple in structure, small in volume, light in weight and convenient for being applied to towing an experimental ship.
Description
Technical field
The present invention relates to a kind of speed measuring device, be specifically related to a kind of portable boat and use speed measuring device.
Background technology
The underwater towed-body kind equipment carries on above water craft usually; Its drag, towing parameter such as stability and ship's speed are closely related; These equipment go to toward carrying out on the lake or the rivers towing trial being delivered for use; Utilize the test boats and ships under the different speed of a ship or plane, to carry out drag operation, test its performance simultaneously.But some test boats and ships do not have speed of a ship or plane measurement mechanism, need to carry the special instrument that tests the speed.In the test in past, the frequent employing thrown wooden unit, and the card stopwatch is measured wooden unit and fallen the time of stern from fore, and then estimates the way of the speed of a ship or plane, and this mode is simple, but precision is low excessively, should use to have big defective.
At present; The surveying instrument of shipping sail speed mainly contains GPS, electromagnet log, Doppler log etc.; These equipment precisions that test the speed are very high, and for example Doppler log can reach 0.01 joint, but its price is also expensive; And these equipment are used for navigation more, a very little part in its function that tests the speed just.Also have in the naval vessel and adopt the hydraulic type log to test the speed; Utilize the Pitot tube principle, gather the dynamic pressure of moving naval vessel generation and the difference △ P of static pressure, and convert the speed of a ship or plane and the output on naval vessel to through a series of mechanisms through the hydraulic pressure information receiving system; Through must fall the voyage on naval vessel to the integral operation of the speed of a ship or plane; But present this mode complex structure, volume, weight are big, are not easy to be applied to the towing trial ship.
Summary of the invention
In view of this; The present invention provides a kind of portable boat to use speed measuring device; It is moving with shipping that this device hangs on gun wale during use; Collect the moving fluid of relative shipping through underwater towed-body simultaneously, the form that converts static pressure through the hydrodynamic that the speed measuring device home loop will be gathered down to demonstrates the headway of ship on the inverted U pipe.
Said portable boat is used speed measuring device, comprises pick-up unit, underwater towed-body, tow rope, recirculatory pipe and pressure guiding pipe.Said pick-up unit comprises: mounting plate, static pressure valve, dynamic pressure valve, water-filling nozzle, water injection valve, inverted U pipe, red ball float, scale, gas injection valve, blue ball float, disappear and move box, drain tap and gas outlet.Said inverted U pipe vertically is fixed on the mounting plate, and along the vertical center line left-right symmetric of mounting plate.The lower end of inverted U pipe left side pipeline and right pipeline is provided with horizontal interface and vertical interface, and two horizontal interfaces are located along the same line.The horizontal interface of inverted U pipe left side pipeline is connected with water-filling nozzle through water injection valve.The horizontal interface of the right pipeline of inverted U pipe is connected with gas outlet through drain tap.The top of inverted U pipe is provided with the gas injection valve.In the left pipeline of inverted U pipe, be placed with red ball float, be placed with blue ball float in the right pipeline.The diameter of said red ball float and blue ball float is identical, all smaller or equal to the caliber of inverted U pipe, guarantees that red ball float and blue ball float can fluctuate freely in the inverted U pipe.In the pipeline of a said inverted U pipe left side in the top of dynamic pressure valve and the right pipeline caliber above the static pressure valve be slightly less than the diameter of red ball float and blue ball float.On the vertical center line of inverted U pipe on the mounting plate, scale is installed, is guaranteed the zero line on red ball float and blue ball float aligning and the scale before testing the speed.
Underwater towed-body comprises housing, plug, worry net, through hole, impulse interface, backflow interface, stablizes rudder plate, center of gravity adjustment piece, tow rope ring, return flow line and impulse passage.Its annexation is: said housing is hollow column construction, is processed with through hole in the center of housing head fluoran stream surface, and through hole and impulse passage connect.The through hole of the vertical direction of processing in the housing that said impulse passage is a towed body under water, the impulse interface is installed in the upper end of impulse passage, and the lower end is through the plug sealing.The return flow line is the through hole of interior another vertical direction processed of housing of towed body under water, in the upper end of return flow line the backflow interface is installed.Said stable rudder plate is arranged in the afterbody of underwater towed-body housing, stablizes rudder plate along housing center line symmetry.Center of gravity adjustment piece is fixed in the housing, and the center of gravity of underwater towed-body is overlapped with the centre of buoyancy.
The whole annexation of speed measuring device is: the mounting plate of pick-up unit is fixed on the ship side of ship to be detected, and the vertical interface of inverted U pipe left side pipeline is connected with pressure guiding pipe through the dynamic pressure valve, and pressure guiding pipe connects through impulse interface and impulse passage.The vertical interface of the right pipeline of inverted U pipe is connected with recirculatory pipe through static pressure valve, and recirculatory pipe connects through backflow interface and return flow line.Said tow rope is a y-type structure, and its divergent ends is connected with tow rope ring on the underwater towed-body housing, and the other end is articulated on the ship to be tested.Through binding strap recirculatory pipe and pressure guiding pipe and tow rope are banded together at last.
Be provided with to disappear in the right pipeline of said inverted U pipe and move box, said disappearing moved box and the inverted U pipe is structure as a whole, and the diameter that the moves box caliber greater than the inverted U pipe disappears.
The position of said scale on mounting plate is adjustable up and down.
The position of nonadjustable signal longitudinally processes waist type groove on mounting plate, and scale can slide up and down in this waist type groove, fixes through register pin after sliding into desired location.
The position that backflow interface and impulse interface are installed on the housing of said underwater towed-body is provided with kuppe.
In the porch of said through hole the worry net is installed.
Beneficial effect:
(1) this apparatus structure is simple, and volume, weight are little, are easy to be applied to the test that the towing trial ship carries out ship's speed.
(2) in the pick-up unit scale of scale corresponding be the speed of a ship or plane of left side liquid level under corresponding height, thereby can the intuitively real-time travel speed of checking ship to be tested.
(3) in the right pipeline of inverted U pipe, be provided with to disappear and move box, can eliminate because of hull and wave or the change that causes inverted U pipe upward pressure such as shake of running causes and the variation of water colunm height guarantees the accuracy of measuring.
Description of drawings
Fig. 1 is that a kind of portable boat of the present invention is with speed measuring device structure collectivity synoptic diagram.
Fig. 2 is a underwater towed-body structural representation of the present invention.
Wherein: the 1-mounting plate; The 2-static pressure valve; 3-dynamic pressure valve; The 4-water-filling nozzle; The 5-water injection valve; 6-inverted U pipe; The red ball float of 7-; The 8-scale; 9-gas injection valve; The blue ball float of 10-; 11-disappears and moves box; The 12-drain tap; The 13-gas outlet; The 14-tow rope; The 15-recirculatory pipe; The 16-pressure guiding pipe; 17-tow rope ring; The 18-underwater towed-body; The 19-kuppe; The 21-plug; 22-considers net; The 23-through hole; 24-impulse interface; 25-backflow interface; 26-stablizes rudder plate; 27-center of gravity adjustment piece; The 28-return flow line; 29-impulse passage.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Present embodiment provides a kind of portable boat to use speed measuring device, and this apparatus structure is simple, and volume, weight are little, are easy to be applied to the test that the towing trial ship carries out ship's speed.
Fig. 1 has shown the general structure of this portable boat with speed measuring device, and this device comprises pick-up unit, underwater towed-body 18, tow rope 14, recirculatory pipe 15 and pressure guiding pipe 16.Wherein pick-up unit is fixed on the ship side of ship to be detected, and pick-up unit is connected with underwater towed-body 18 with pressure guiding pipe 16 through recirculatory pipe 15.Tow rope 14 is a y-type structure, and its divergent ends is connected with corresponding tow rope ring 17 on the underwater towed-body 18, and the other end is articulated on the ship to be tested, guarantees that underwater towed-body 18 and tested ship go synchronously.Fluid resistance bundles recirculatory pipe 15 and pressure guiding pipe 16 and tow rope 14 through binding strap the influence of recirculatory pipe 15 and pressure guiding pipe 16 in the water in order to reduce, and relies on tow rope 14 to bear towing tension, guarantees that recirculatory pipe 15 and pressure guiding pipe 16 can operate as normal.
Pick-up unit comprises mounting plate 1, static pressure valve 2, dynamic pressure valve 3, water-filling nozzle 4, water injection valve 5, inverted U pipe 6, red ball float 7, scale 8, gas injection valve 9, blue ball float 10, disappears and move box 11, drain tap 12 and gas outlet 13.For making the one-piece construction versatility height of speed measuring device, the valve of configuration is the stop valve of standard on the device.
The annexation of pick-up unit is:
Mounting plate 1 is fixed on the ship side of ship to be detected, and inverted U pipe 6 vertically is fixed on the mounting plate 1, and along the vertical center line left-right symmetric of mounting plate 1.The lower end of inverted U pipe 6 left and right sides pipelines is provided with horizontal interface and vertical interface (respectively being connected a three-way pipe in the lower end of inverted U pipe 6 left and right sides pipelines in the present embodiment), and the horizontal interface at two ends is located along the same line.The horizontal interface of inverted U pipe 6 left pipelines is connected with water-filling nozzle 4 through water injection valve 5, and the vertical interface of left pipeline is connected with pressure guiding pipe 16 through dynamic pressure valve 3, and pressure guiding pipe 16 inserts underwater towed-body 18.The horizontal interface of inverted U pipe 6 right pipelines is connected with gas outlet 13 through drain tap 12, and the vertical interface of right pipeline is connected with recirculatory pipe 15 through static pressure valve 2, and recirculatory pipe 15 inserts underwater towed-body 18.The top of inverted U pipe 6 is provided with gas injection valve 9.
In the left pipeline of inverted U pipe 6, be placed with red ball float 7; Be placed with blue ball float 10 in the right pipeline; Red ball float 7 is identical with the diameter of blue ball float 10, all smaller or equal to the caliber of inverted U pipe 6, guarantees that red ball float 7 can fluctuate with blue ball float 10 freely in inverted U pipe 6.Can not fall on static pressure valve 2 or the dynamic pressure valve 3 in order to guarantee ball float; The caliber at said inverted U pipe A place (top of dynamic pressure valve 3 in the left pipeline) and B place (top of static pressure valve 2 in the right pipeline) is slightly less than the diameter of red ball float 7 and blue ball float 10; Even under the situation that no extraneous medium charges in pipeline like this, can guarantee that also ball float can not fall on static pressure valve 2 and the dynamic pressure valve 3.
In the right pipeline of inverted U pipe 6, be provided with to disappear and move box 11, disappear that to move box 11 are a bit of hollow cylinders, the pipeline of inverted U pipe 6 has bigger sectional area relatively.Under the condition of double altitudes, the pipeline with relative inverted U pipe 6 has bigger volume like this, can eliminate because of hull and wave or the change that causes inverted U pipe 6 upward pressures such as shake of running causes the variation of water colunm height.
Scale 8 is installed on the vertical center line of inverted U pipe 6 on the mounting plate 1, and the effect of scale 8 is indication speed of a ship or plane.For make two ball floats being on the same datum line can be easily with scale 8 on " zero-bit " corresponding; The Position Design of scale 8 is become adjustable up and down; Concrete grammar is: the position of nonadjustable signal 8 longitudinally processes waist type groove on mounting plate 1; Scale 8 can slide up and down in waist type groove, like this with making its adjusting of on mounting plate 1, doing the upper and lower position after scale 8 installations, fixes through register pin after being adjusted to desired location.
The structure of underwater towed-body 18 is as shown in Figure 2.
Underwater towed-body 18 mainly comprises: housing, plug 21, consider net 22, through hole 23, impulse interface 24, backflow interface 25, stablize rudder plate 26, center of gravity is adjusted piece 27, tow rope ring 17, return flow line 28 and impulse passage 29.
Housing is hollow column construction; For guaranteeing that underwater towed-body 18 can effectively reach pressure information in the inverted U pipe 6; The center of towed body 18 head fluoran stream surfaces is processed with through hole 23 under water; Through hole 23 connects with impulse passage 29, and impulse passage 29 is the through hole of the interior vertical direction of processing of housing of towed body 18 under water, and the upper end of impulse passage 29 is connected with pressure guiding pipe 16 through impulse interface 24; Thereby after the hydraulic signal that collects reached impulse passage 29, get in the left pipeline of inverted U pipes 6 through pressure guiding pipe 16 again.For guaranteeing that underwater towed-body 18 is in operational process; With all importing in the pipeline in inverted U pipe 6 left sides behind the hydraulic signal input impulse passage 29 that collects; After processing impulse passage 29 and through hole 23,, should guarantee watertight after the encapsulation with the opening encapsulation of plug 21 with impulse passage 29 lower ends.
Fluid resistance is provided with kuppe 19 to the influence of recirculatory pipe 15, pressure guiding pipe 16 and underwater towed-body stream interface 18 last time 25, impulse interface 24 joints in the position that backflow interface 25 and impulse interface 24 are installed in the device course of work in order to reduce.
Because underwater towed-body 18 is with ship navigation, foreign material get in the through hole 23 in the water in order to avoid, its porch be provided with consider net 22 with waterproof in foreign material get in the impulse passage 29.
Stablize the afterbody that rudder plate 26 is arranged in underwater towed-body 18 housings, stablize rudder plate 26 along housing center line symmetry, center of gravity adjustment piece 27 is fixed in the housing, makes the center of gravity of underwater towed-body 18 be positioned at the centre of buoyancy.Attitude stability when the function of stablizing rudder plate 26 and center of gravity adjustment piece 27 guarantees that underwater towed-body 18 navigates by water in water.
The principle of work of this speed measuring device is:
Preliminary work before testing the speed:
(1) water filling:
Before testing the speed static pressure valve 2, dynamic pressure valve 3 and vent valve 12 are placed closed condition, water injection valve 5 places opening with gas injection valve 9, its objective is water column and the bubble of in inverted U pipe 6, setting up certain altitude.Concrete grammar is: in the pipe in inverted U pipe 6 left sides, inject a certain amount of water from water-filling nozzle 4 through water injection valve 5, hot ball float 7 is closed water injection valve 5 after rising to the scale position of the top of scale 8.Open vent valve 12, adopt above-mentioned same method in the pipe on inverted U pipe 6 right sides, to inject a certain amount of water through vent valve 12 from gas outlet 13, make blue ball float 10 rise to left ducted liquid level parallel position after, close vent valve 12.
(2) bubble in the elimination inverted U pipe 6
From gas injection valve 9 water filling in inverted U pipe 6, after fills with water in the inverted U pipe 6, close gas injection valve 9 lentamente.Having a little bubble at this moment in the inverted U pipe 6 exists; For eliminating the bubble in the inverted U pipe 6; The measure of taking is: earlier gas injection valve 9 is set to opening, observing bubble then is in the left pipeline or right pipeline of inverted U pipe 6, according to the position at bubble place; If bubble is opened water injection valve 5 in the pipe of a left side, if bubble vent valve 12 in the pipe of the right side.And,, close gas injection valve 9 simultaneously with closing water injection valve 5 or vent valve 12 after the eliminating of the bubble in the inverted U pipe 6 from an amount of water of gas injection valve 9 injections, can guarantee fulls of liquid in the inverted U pipe 6 like this.(repeat this step and in inverted U pipe 6, do not have bubble).
(3) bubble in elimination recirculatory pipe and the pressure guiding pipe
For the loop in the assurance device all is full of water, open water injection valve 5, open dynamic pressure valve 3 simultaneously, to water-filling nozzle 4 water-fillings, can the air in the pressure guiding pipe 16 be got rid of like this, after treating to be full of water in the pressure guiding pipe 16, close dynamic pressure valve 3.Open vent valve 12, from gas outlet 13 water fillings, open static pressure valve 2 simultaneously, can the air in the recirculatory pipe 15 be got rid of like this, at this moment, the pipeline in the whole device all has been full of water, has not had bubble in the pipeline.
(4) in inverted U pipe 6, set up air column
For demonstrating the headway of ship in the course of the work, need in inverted U pipe 6, to set up air column, make ship to be tested in underway, the water column of inverted U pipe 6 left pipelines and right pipeline is in different height, converts out the speed of a ship or plane of ship with both differences in height.
According to the liquid incompressibility, and gas has compressible principle.In the inverted U pipe 6 that plays Presentation Function, need set up air column; Institute's air column of building is between red ball float 7 and blue ball float 10; For the accuracy of the ship speed of a ship or plane value to be tested that demonstrates on the assurance device, testing the speed before, should red ball float 7 and blue ball float 10 be adjusted on the same datum line simultaneously.Implementation procedure is: at first open water injection valve 5 inverted U pipe 6 left ducted water are emitted some, close water injection valve 5.Open drain tap 12 simultaneously, inverted U pipe 6 right ducted water are emitted some, close drain tap 12.So just set up one section air column at red ball float 7 and 10 of blue ball floats, being pointed out that needs gas injection valve 9 is in normally open (guaranteeing the inverted U ducted pressure equilibrium in pipe 6 left and right sides) when doing above-mentioned work.For guaranteeing that red ball float 7 is on the same datum line with blue ball float 10; The exhausr port that extraneous water source is located from water-filling nozzle 4 (left side fluid column is low, opens water injection valve) or gas outlet (the right fluid column is low, opens vent valve) injects; Two ball floats are on the same horizontal line, are closing gas injection valve 9.Adjust the position of scale 8 on mounting plate 1 at last, the zero graduation line of scale 8 and two ball floats are on the same horizontal line, adjust the back and scale 8 is fixed on the mounting plate 1 through register pin.
The principle that adopts this device to carry out the ship's speed measurement is:
Before testing the speed, red ball float 7 is adjusted on the zero graduation line of scale 8 with blue ball float 10, be located on the same benchmark.Underwater towed-body 18 navigates by water with the ship that tested the speed synchronously when testing the speed; The through hole 23 that its head fluoran stream surface center is offered reaches the flowing pressure that collects in the left pipeline of inverted U pipe 6; This moment the water column lifting height h (tested ship headway is fast more, and the water column in the left pipeline is high more) under the effect of flowing pressure in the left pipeline.Behind the rising h of the water column in the inverted U pipe 6 left pipelines, under the effect of the gas column in inverted U pipe 6 between two ball floats, the water column decline h of inverted U pipe 6 right pipelines, thus the liquid level in inverted U pipe 6 left and right sides pipelines forms difference in height.According to bernoulli principle; When the liquid level lifting height h of left side; The speed of a ship or plane of ship to be detected
in the present embodiment; In order can to check the speed of a ship or plane intuitively, the scale of scale 8 is corresponding is the speed of a ship or plane of left side liquid level under corresponding height.
In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a portable boat is used speed measuring device, it is characterized in that, comprising: pick-up unit, underwater towed-body (18), tow rope (14), recirculatory pipe (15) and pressure guiding pipe (16);
Said pick-up unit comprises: mounting plate (1), static pressure valve (2), dynamic pressure valve (3), water-filling nozzle (4), water injection valve (5), inverted U pipe (6), red ball float (7), scale (8), gas injection valve (9), blue ball float (10), disappear and move box (11), drain tap (12) and gas outlet (13); Said inverted U pipe (6) vertically is fixed on the mounting plate (1), and along the vertical center line left-right symmetric of mounting plate (1); The lower end of left pipeline of inverted U pipe (6) and right pipeline is provided with horizontal interface and vertical interface, and two horizontal interfaces are located along the same line; The horizontal interface of the left pipeline of inverted U pipe (6) is connected with water-filling nozzle (4) through water injection valve (5); The horizontal interface of the right pipeline of inverted U pipe (6) is connected with gas outlet (13) through drain tap (12); The top of inverted U pipe (6) is provided with gas injection valve (9); In the left pipeline of inverted U pipe (6), be placed with red ball float (7), be placed with blue ball float (10) in the right pipeline; Said red ball float (7) is identical with the diameter of blue ball float (10), all smaller or equal to the caliber of inverted U pipe (6), guarantees that red ball float (7) and blue ball float (10) can fluctuate freely in inverted U pipe (6); In the left pipeline of said inverted U pipe (6) in the top of dynamic pressure valve (3) and the right pipeline caliber of static pressure valve (2) top be slightly less than the diameter of red ball float (7) and blue ball float (10); Go up at mounting plate (1) on the vertical center line of inverted U pipe (6) scale (8) be installed, guarantee before testing the speed that red ball float (7) and blue ball float (10) are aimed at and scale (8) on zero line;
Said underwater towed-body (18) comprising: housing, plug (21), consider net (22), through hole (23), impulse interface (24), backflow interface (25), stablize rudder plate (26), center of gravity adjusts piece (27), tow rope ring (17), return flow line (28) and impulse passage (29); Its annexation is: said housing is hollow column construction, is processed with through hole (23) in the center of housing head fluoran stream surface, and through hole (23) connects with impulse passage (29); Said impulse passage (29) is the through hole of the interior vertical direction of processing of housing of towed body (18) under water, and impulse interface (24) is installed in the upper end of impulse passage (29), and the lower end is through plug (21) sealing; Return flow line (28) is the through hole of interior another vertical direction processed of housing of towed body (18) under water, and backflow interface (25) is installed in the upper end of (28) in the return flow line; Said stable rudder plate (26) is arranged in the afterbody of underwater towed-body (18) housing, stablizes rudder plate (26) along housing center line symmetry; Center of gravity adjustment piece (27) is fixed in the housing, and the center of gravity of underwater towed-body (18) is overlapped with the centre of buoyancy;
The whole annexation of said speed measuring device is: the mounting plate of pick-up unit (1) is fixed on the ship side of ship to be detected; The vertical interface of the left pipeline of inverted U pipe (6) is connected with pressure guiding pipe (16) through dynamic pressure valve (3), and pressure guiding pipe (16) connects through impulse interface (24) and impulse passage (29); The vertical interface of the right pipeline of inverted U pipe (6) is connected with recirculatory pipe (15) through static pressure valve (2), and recirculatory pipe (15) connects through backflow interface (25) and return flow line (28); Said tow rope (14) is a y-type structure, and its divergent ends is connected with tow rope ring (17) on underwater towed-body (18) housing, and the other end is articulated on the ship to be tested; Through binding strap recirculatory pipe (15) and pressure guiding pipe (16) are banded together with tow rope (14) at last.
2. a kind of portable boat as claimed in claim 1 is used speed measuring device; It is characterized in that; In the right pipeline of said inverted U pipe (6), being provided with disappears moves box (11); Said disappearing moved box (11) and inverted U pipe (6) and is structure as a whole, and disappears and moves the caliber of the diameter of box (11) greater than inverted U pipe (6).
3. a kind of portable boat as claimed in claim 1 is used speed measuring device, it is characterized in that, the position of said scale (8) on mounting plate (1) is adjustable up and down.
4. a kind of portable boat as claimed in claim 3 is used speed measuring device; It is characterized in that; The position of going up nonadjustable signal (8) at mounting plate (1) longitudinally processes waist type groove, and scale (8) can slide up and down in this waist type groove, fixes through register pin after sliding into desired location.
5. a kind of portable boat as claimed in claim 1 is used speed measuring device, it is characterized in that, the position that backflow interface (25) and impulse interface (24) are installed on the housing of said underwater towed-body (18) is provided with kuppe (19).
6. a kind of portable boat as claimed in claim 1 is used speed measuring device, it is characterized in that, installs in the porch of said through hole (23) and considers net (22).
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| CN201210364122.XA CN102841216B (en) | 2012-09-26 | 2012-09-26 | Portable speed measuring device for ship |
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| CN201210364122.XA CN102841216B (en) | 2012-09-26 | 2012-09-26 | Portable speed measuring device for ship |
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| CN102841216B CN102841216B (en) | 2014-07-02 |
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Cited By (9)
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| CN105628960A (en) * | 2014-10-29 | 2016-06-01 | 北京强度环境研究所 | Speed-measuring device of underwater test ship speed simulating system |
| CN106627997A (en) * | 2017-01-03 | 2017-05-10 | 深圳市云洲创新科技有限公司 | Measuring equipment mounting method, support and unmanned ship |
| CN106768170A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院上海应用物理研究所 | The fluid parameter measurement apparatus of high-temperature electric conduction liquid, method |
| CN106926971A (en) * | 2017-02-28 | 2017-07-07 | 中船西江造船有限公司 | Pipeline internal field makes and detecting tool |
| CN107247156A (en) * | 2017-07-31 | 2017-10-13 | 长江大学 | A kind of flow rate measuring device and implementation based on pressure sensitive |
| CN107422142A (en) * | 2017-09-12 | 2017-12-01 | 深圳大学 | Pressure method stirs current Simple speed measuring device and speed-measuring method |
| CN109374920A (en) * | 2018-11-29 | 2019-02-22 | 江苏好三由信息科技有限公司 | Ship slipping ratio detector |
| CN109541255A (en) * | 2018-11-29 | 2019-03-29 | 中国船舶重工集团公司第七0七研究所九江分部 | A kind of integrated impulse formula water speed sensor to test the speed for amphibious vehicle to water |
| CN117104433A (en) * | 2023-09-20 | 2023-11-24 | 海底鹰深海科技股份有限公司 | Disposable sonar and interaction method of disposable sonar and ship |
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