CN2532465Y

CN2532465Y - Ship draught measurer

Info

Publication number: CN2532465Y
Application number: CN 02219118
Authority: CN
Inventors: 郭亮; 郭顺福; 郭慧; 郭丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-28
Filing date: 2002-02-28
Publication date: 2003-01-22
Anticipated expiration: 2012-02-28

Abstract

The utility model discloses a shipping draught measuring apparatus for checking a barge weight by a water gauge. The main body of the measuring apparatus is a container (1) with a containing cavity, an opening communicated with the atmosphere is arranged at the upper part of the container, and a hairlike channel (5) is arranged at the lower part of the container (1) for allowing water to go in and out of the containing cavity of the container. The wave interference can be controlled under +- 0.1mm through the action of the hairlike channel. With simple structure, low cost and high measure precision, the utility model which is divided into three grades of direct display type, digital display type and automatic type is an ideal apparatus for measuring the draught of a barge.

Description

The drauht measuring instrument

Affiliated technology neck city

The utility model belongs to boats and ships Weight by Draft field, is specifically related to a kind of drauht measuring instrument.

Background technology

Because the development of trade cause both at home and abroad, the workload of barge handing-over goods increases day by day in the transportation of river sea canal, and when the handing-over goods, the barge Weight by Draft is simple and practical loan thing meter double recipe formula.For this reason, transportation industry portion of the People's Republic of China (PRC) has issued " the transportation industry standard JT/T227-1996 of the People's Republic of China (PRC) " " barge Weight by Draft technical regulation " on July 28th, 1996, is applicable to that the cheap bulk solid goods meter of inland river barge acknowledgement of consignment is heavy.

The barge Weight by Draft is a kind of meter double recipe formula of barge carrying goods.It is by measuring and calculating barge load draft value and unloading back (before loading) drinking water value, and the barge hydroststic curve (or drinking water and deadweight tonnage table of comparisons) that provides according to the carrier, look into and calculate barge loaded displacement and unloading back (before loading) water discharge, thereby calculate the weight of barge cargo.This standard code survey instrument commonly used has: one in steel tape; One of vertical densitometer; One of 1000ml glass cylinder; One of mercury thermometer.

The key of barge Weight by Draft is the measurement of drinking water value.Influencing the topmost factor of drinking water value measuring accuracy is wave, and wave is big more big more to drinking water value measuring error, causes barge Weight by Draft result's error big more.

Therefore, the key of raising barge Weight by Draft degree of accuracy is how to eliminate wave to measuring the interference of drinking water value.

Up to now, measure the still directly range estimation of method of barge drinking water value.Rely on people's eye estimate wave center, determine the drinking water value at a certain water gauge sign of boats and ships place with this.Because the wave in the rivers,lakes and seas is subjected to the influence of multiple complicated factor, belongs to nonstationary random signal.Therefore the center of eye estimate wave certainly will produce error, and the big more error that is easy to generate more of wave.For 2000 tons barge, 1 centimetre of Mean Draught value error, then the result of barge Weight by Draft is with 10 tons of errors.

In order to eliminate wave to measuring the interference of drinking water value, above-mentioned standard " barge Weight by Draft technical regulation " has been recommended a method specially, and promptly " if conditions permit, suggestion is inserted in the water with long glass tube, is reference measurement drinking water value with the water surface in the glass tube." but this method practical operation have difficulties, so also do not see example introduction so far relevant for its practical application.

Summary of the invention

The purpose of this utility model is: design a kind of drauht measuring instrument, eliminate wave to measuring the interference of drauht, just control wave to the influence of measuring the drauht value at ± 0.1mm, make the barge Weight by Draft not only degree of accuracy be greatly improved but also operate more convenient and efficient.

Technical solution of the present utility model is: this measuring instrument main body is a container, on the top of the container of being with cavity volume one opening that communicates with atmosphere is arranged, and fine channel water supply turnover container is arranged at the container bottom.

Maintain static after the appropriate depth if this device inserted in the static pond, then according to fluid mechanics knowledge, the water surface in this apparatus container is inevitable to rise gradually, up to container outside still water mutually concordant till.

Guess the water surface and certainly exist unique " a desirable still water " with wave.So-called " desirable still water " is exactly the still water after wave stops fully.This device inserted in the water with wave maintain static after the appropriate depth.Then the liquid level in the container must rise to " desirable still water " gradually, when wave is higher than " desirable still water ", according to fluid mechanics knowledge, the outer water of container must enter in the container by container bottom fine channel, but because the control action of fine channel, the flow that enters container is atomic little, causes that liquid level rising speed is also atomic little in the container; When being lower than " desirable still water " when wave is in, the water in the container must outwards flow out by fine channel, but is subjected to the control of fine channel equally, and the flow that flows out water is also atomic little; The frequency of wave is higher in addition, so can be controlled at 1mm to wave to the influence value of measuring drauht even within the 0.1mm.

Advantage that the utility model is compared with prior art had or good effect:

1, improved the technical merit of barge Weight by Draft.The basis of barge Weight by Draft technology is that drauht is measured, and measure the error that drauht often has 1 centimetre even several centimetres when big (as wave in the river) with direct-vision method now, can reach below 1 millimeter and measure the drauht error with the utility model; Measure drauht with direct-vision method and will avoid stochastic factor such as ship is passing, fitful wind, the utility model is measured drauht and then be need not to avoid above-mentioned stochastic factor, the utility model is just simply more convenient than present direct-vision method operation, as during the drinking water when measuring light ship condition, if the people stands in then to leave on the ship deck and treats that the draft place far is difficult to direct range estimation, must help by means of other power ship, and the utility model does not need to employ other power ship help.

2, improved the shipbuilding technical merit.Can improve boats and ships inclining experiment result's degree of accuracy with the utility model, the degree of accuracy of vessel stability result of calculation is improved.

3, improve boats and ships quality testing level.Can find out the accurate level reference that swims in water craft with the utility model, thereby accurately measure the structural strain's amount of hull, as boats and ships hogging, in hang down or the torsional deformation amount.

4, the utility model can be used for accurately measuring or showing the water level of rivers,lakes and seas and reservoir, with favourable monitoring.

Description of drawings

Fig. 1 is the utility model structural representation

Among the figure: 1 container, 2 openings, 3 scale marks, 4 buoys, 5 fine channels, 6 fixtures, 7 viewers

Embodiment

As shown in Figure 1, this drinking water measuring instrument main body is the container 1 of a band cavity volume, there is opening 2 to communicate on the top of container 1 with atmosphere, the bottom of container 1 has a fine channel 5 to supply water in the cavity volume of turnover containers 1; buoy 4 is placed in the cavity volume of containers 1; distribution scale mark 3 on chamber wall, and fixture 6 is with measuring instrument main body container 1 fixedly on the object under test, on the viewer 7 connection measuring instrument containers 1 by conducts such as industrial fiber scopes.

In practical application as required, fine channel can be fixing also can be adjustable.Fine channel can be aperture or slit, and available several different methods forms.As in the container bottom such as bottom or sidewall set in advance trickle aperture or trickle slit, or container lower openings or tapping be provided with the cock of appropriate degree of tightness or opened by the valve member appropriateness that install the container bottom, or formed or the like with appropriate cooperation of bolt by the nut that install the container bottom.

This measuring instrument container size and shape, make with transparent material or with opaque material or with transparent material and opaque material combination, all concrete conditions such as mode of absorbing water according to survey Ship Types size, measurement and technical requirement are decided.

According to application scenario, investment difference and user's needs, realize that best way of the present utility model can be divided into three kinds of different class:

One, direct display type drauht instrument, as shown in Figure 1, container 1 can be a straight pipe type, its cross section can be circle, semicircle, rectangle, triangle etc.At least be transparent observing drinking water place, there is scale mark 3 at transparent place, and each little lattice is 1 millimeter, and each big lattice is 1 centimetre.There are opening 2 or perforate etc. to communicate on the top of container with atmosphere; Be provided with fixing trickle aperture 5 or trickle slit in the bottom of container (or sidewall), the trickle degree in trickle aperture or trickle slit requires to determine according to measuring accuracy.Viewer 7 is according to the manufacturing of fiber optic transmission image principle, fixture 6 is a pan straddle, can be an integral body with container, temporary fixedly should contain permanent magnet material if be used for, during practical application fixture is fixed (interim or permanent) at boats and ships certain water gauge sign place to be measured together with container, by the time the liquid level that rises gradually in the container no longer rises when static substantially, is benchmark with this basic still water, measures drauht.4 is eye-catching buoy, can be concordant with the basic still water in the container or exceeds in its upper surface, but needs demarcate in hydrostatic in advance.

Illustrate:

(A) if container be with manually by fixed, also shouldn't fixture.

(B), observe utensil except that with the industrial fiber scope, can also use appropriate combination such as concave mirror, level crossing, magnifier, total reflection prism to become the observation utensil.

(C), theoretically, container 1 also can not stay the passage that directly communicates with atmosphere, and takes other method, makes container 1 interior water surface top have the pressure that equates with container 1 outside atmospheric pressure all the time, or other ratings pressure.

Two, digital drauht measuring instrument, the advantage of this measuring instrument show drauht and record with digital signal, but investment is bigger.

Three, full rotation type drauht measuring instrument.Measuring instrument utilizes microcomputer to do subsequent treatment work.The complete left and right side of a ship of ship, two side of a ship head, in, the tail drinking water, data, the signal that amount to six water gauge places rely on the final direct displayed record of specialized hardware and software to go out tested boats and ships Mean Draught value and deadweight capacity, if carry out the microcomputer networking, be sitting in and promptly know drauht and deadweight capacity thousands of miles away in the office, but investment is bigger.

Claims

1, drauht measuring instrument is characterized in that: the main body of measuring instrument is the container (1) of a band cavity volume, and an opening that communicates with atmosphere (2) is arranged on the top of container (1), and the fine channel (5) of turnover container (1) cavity volume that supplies water is positioned at the bottom of container (1).

2, drauht measuring instrument according to claim 1 is characterized in that: scale mark (3) is arranged on chamber wall.

3, drauht measuring instrument according to claim 1 is characterized in that: by fixture (6) fixation measuring instrument on determinand.

4, drauht measuring instrument according to claim 1 is characterized in that: buoy (4) is arranged in the cavity volume of container (1).

5, drauht measuring instrument according to claim 1 is characterized in that: viewer (7) is connected with container (1).