CN2438658Y

CN2438658Y - Automatic stretching measuring arm under water

Info

Publication number: CN2438658Y
Application number: CN 00250111
Authority: CN
Inventors: 魏文博; 邓明; 谭捍东
Original assignee: China University of Geosciences Beijing
Current assignee: China University of Geosciences Beijing
Priority date: 2000-09-12
Filing date: 2000-09-12
Publication date: 2001-07-11
Anticipated expiration: 2010-09-12

Abstract

The utility model relates to an automatic stretching measuring arm under water, which comprises a hollow electrode tube; one end of the hollow electrode tube, which is connected with the measuring arm body, is clamped with a protecting board by a cutting sleeve clamped on the protecting board of the measuring arm body; the outer side is tightly clamped with a locking nut by a fixing nut; the electrode tube is divided into two sections along the middle part of the shaft line of the electrode tube; the second section of the electrode tube is connected by a hinge sleeve to cause the electrode tube to be on two extreme positions of downwards slouching closed state and horizontally straightening stretching state; the measurement end head of the electrode tube extends towards the coordinate portion of remote sea bottom to collect data.

Description

Automatically uphold gage beam under water

The utility model belongs to Marine Geology detecting instrument field, specially refers to a kind of gage beam of upholding automatically under water.

China is vast in territory, the marine site broadness, depths, the seabed geological resource that is richly stored with, for many years, Marine Geology worker attempts to survey, excavation is imbedded in the endless precious deposits of benthos, allow it serve the mankind, serve national economic development, but the detecting instrument of Marine Geology and detection means are relatively backward always, western countries utilize modern science and technology to carry out the seabed electromagnetic measurement, measure the electric field in seabed, the magnetic field gradient of magnetic field and each coordinate points, to survey the distribution of submarine oil and various mineral reserve, but blockade on new techniques is carried out to China in the west, only sell product non-disclosre technology, and valuable product, an electromagnetic instrument will be sold 450,000 dollars, it is worth noting that more the marine electromagnetic detection instrument of western countries' production is not suitable for the practical present situation of China, because overseas-built navigation exploration ship, its deck working area is big, about sq m more than 100, be fit to use large-scale instrument, and the exploration ship deck of China is less, width is narrow, area of work the putting to good use of large-scale instrument that be unable to hold, for this reason, China Marine Geology worker has developed the marine magnetotelluric instrument of suitable China present situation voluntarily, and the gage beam of upholding automatically under water of the present utility model is exactly in the whole electromagnetic instrument one an independently parts; Adapt to narrow relatively bench board.When the usual state that instrument is not measured under seawater, this gage beam droops down, does not account for much spaces; In case down in the sea, this gage beam is upheld automatically by the buoyancy of seawater, makes its arm measure end stretch to seabed at a distance, to record the information of scope farther place as far as possible.

The purpose of this utility model, be in order to fill up the domestic blank that does not still have the marine magnetotelluric instrument, in order to save high foreign exchange and to adapt to China's usage condition, and design a kind of gage beam that is used for the marine magnetotelluric instrument that can uphold automatically under water, make it measure farther data.

The utility model relies on following technical proposals to realize, a kind of gage beam of upholding automatically under water, the electrode tube that comprises a hollow, the one end links to each other with the electromagnetic instrument body construction, the end of the other end is for measuring the electric-field sensor of electromagnetic intensity, and be connected in the electromagnetic instrument body by the hollow electrode pipe by watertight cable, it is characterized in that, an end that links to each other with body is blocked electrode tube and backplate by the cutting ferrule that is connected on the body backplate, the outside along the middle part of electrode tube axis, is divided into two sections by captive nut and jam nut chucking, by hinge sleeve the second segment electrode pipe is connected, the end of the second segment electrode pipe is equipped with buoyancy ring, and outermost end is an electric-field sensor, and it links to each other with buoyancy ring, the hinge cover can rotate around rotation central axis, makes it be in the closure state and the level of drooping respectively downwards and stretches on open these two kinds of extreme positions.

The good effect of this programme, be according to the less state of China's instrumentation ship deck work top, designed the gage beam of being convenient to hold that can uphold automatically, can rotate around axis by hinge sleeve and it to be drooped automatically and uphold, can make the coordinate place that farther seabed is stretched in the measurement termination of gage beam carry out data acquisition easily.

Further specify embodiment below in conjunction with accompanying drawing:

Description of drawings:

Fig. 1 is that the position of upholding gage beam and marine magnetotelluric instrument automatically concerns scheme drawing;

Fig. 2 is for upholding the coordinate points that gage beam can record automatically;

Fig. 3 is the structural representation that an end of gage beam is connected with the electromagnetic instrument body;

Fig. 4 is the axially hinge cover scheme drawing at middle part of gage beam.

Among the figure, 1 is electromagnetic instrument body backplate, cutting ferrule 3 blocks gage beam electrode tube 2, tighten up with the body backplate through captive nut 4 and jam nut 5 electrode tube 2 with gage beam, by two sections ABS plastic pipes 2 and 2 ' linking to each other forms, the center cavity place is connected with watertight cable 6 to the overall electrode pipe respectively, be provided with hinge cover 7 along measuring the arm axle medium position, hinge has 60 ° of nick shapeds, and hinge sleeve can pivot, and rotation central axis 9 is arranged on the projection 8.At ordinary times 2 ' with 2 be in bending state, when treating to measure, because buoyant of sea water into the sea, buoyancy by buoyancy ring 10, make 2 and 2 ' be in horizontal stretched condition, the position of measuring junction forwards the B point to by A, makes the electric-field sensor measuring head stretch to measurement coordinate at a distance.

Claims

1, a kind of gage beam of upholding automatically under water, the electrode tube that comprises a hollow, the one end links to each other with the electromagnetic instrument body construction, the end of the other end is for measuring the electric-field sensor of electromagnetic intensity, and be connected in the electromagnetic instrument body by the hollow electrode pipe by watertight cable, it is characterized in that, an end that links to each other with body is blocked electrode tube and backplate by the cutting ferrule that is connected on the body backplate, the outside is by captive nut and jam nut chucking, middle part along the electrode tube axis, be divided into two sections, by hinge sleeve the second segment electrode pipe connected, the end of the second segment electrode pipe is equipped with buoyancy ring, outermost end is an electric-field sensor, it links to each other with buoyancy ring, and the hinge cover can rotate around rotation central axis, makes it be in the closure state and the level of drooping respectively downwards and stretches on open these two kinds of extreme positions.

According to the described gage beam of claim 1, it is characterized in that 2, the overall electrode pipe is linked to each other by two sections ABS plastic pipes respectively and forms.

According to the described gage beam of claim 1, it is characterized in that 3, hinge is 60 ° of nick shapeds, it can pivot, and rotation central axis 9 is arranged on the projection 8.