Wave absorption liquid level ruler based on hollow rigid tube body
Technical field
The utility model belongs to field of measuring techniques, and in particular to a kind of wave absorption liquid level ruler based on hollow rigid tube body.
Background technology
Liquid level ruler can navigation, it is motor-driven, ensure in indicate the filling liquid state relation of each liquid tank.Traditional mechanical level ruler exists
When measuring the liquid level of each liquid tank, complex steps and it can not omit.Need to judge whether pressure meets measurement item of uncapping in liquid tank first
Part, crewman need to operate valve, constantly observation pressure gauge ensures liquid tank internal and external pressure balance, then open liquid tank sealing cover, repeatedly
Insertion/pull-out liquid level ruler carries out the sequence of operations such as reading and obtains correct liquid level trace line.It, need to be by liquid level ruler after the completion of reading
It correctly puts back to, ensures liquid tank good seal, also need to restore pressure original in liquid tank sometimes.In face of it is large number of, characteristic is different
Various liquid tanks, the original pressure state of liquid tank will be influenced with filling pressure discharge operations simultaneously by reading liquid level using liquid level ruler mode,
The meetings such as liquid tank internal liquid shakes, fluctuation produce bigger effect measurement.Generally requiring more people in measurement process coordinates ability complete
Into taking considerable time and energy.Meanwhile there is also subjectivities for the reading of liquid level ruler, inevitably introduce measurement error.
It is worth noting that, liquid level ruler is suspended in by free gravity inside liquid tank, shaken in liquid tank internal liquid,
It is difficult to correct liquid level is measured by liquid level ruler.When substantially motor-driven, liquid level ruler is not fixed with liquid tank, easily in liquid tank
Wall collides.Mechanical level ruler existing defects in liquid level is measured, it is mainly complex for operation step, it takes considerable time;Accidentally
It is poor big;Need duplicate measurements;Means are original;Under special circumstances (liquid tank pressurizes, the ullage of motor-driven generation shakes etc.), liquid level
Ruler can not measure.
Utility model content
The utility model is directed to the situation of the prior art, for above-mentioned condition, provides a kind of based on hollow rigid tube body
Wave absorption liquid level ruler.
The utility model uses following technical scheme, and the wave absorption liquid level ruler based on hollow rigid tube body is vertical along liquid level
Direction equally spacedly sets several conductive contacts, and each conductive contact is serially connected, further include insulated mounting plate, circuit board and
Hollow rigid tube body, wherein:
Each conductive contact includes conduction copper column and the contact site made of graphite, and above-mentioned contact site is inscribed in conduction copper column
One end end, the other end end of the conduction copper column is plugged in insulated mounting plate;
Circuit board is set between the conduction copper column and insulated mounting plate of each conductive contact, and foregoing circuit plate passes through screw
It is fixedly connected with insulated mounting plate;
The both sides of the insulated mounting plate are fixedly connected simultaneously with the madial wall of hollow rigid tube body, the hollow rigid tube
The inner surface of body inwardly surrounds and forms accommodating chamber.
According to above-mentioned technical proposal, the vertical interval of adjacent conductive contact is 5 millimeters.
According to above-mentioned technical proposal, filled between the conduction copper column of the insulated mounting plate, circuit board and conductive contact close
Sealing.
According to above-mentioned technical proposal, the hollow rigid tube body is made of titanium alloy.
Wave absorption liquid level ruler based on hollow rigid tube body disclosed in the utility model, advantage is, hangs down along liquid level
Nogata is to the grounding body for equally spacedly setting several conductive contacts He being immersed in conducting liquid, according to the height of each conductive contact
Low potential judges liquid level position, realizes that equidistant contact measures liquid level function.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the preferred embodiment in the utility model.
Fig. 2 is the conductive contact distribution schematic diagram of the preferred embodiment in the utility model.
Fig. 3 is the three-dimensional structure diagram of the preferred embodiment in the utility model.
Fig. 4 is the local structural graph of the preferred embodiment in the utility model.
Specific embodiment
The utility model discloses a kind of wave absorption liquid level ruler based on hollow rigid tube body, with reference to preferred embodiment,
Specific embodiment of the present utility model is further described.
Referring to Figure 1 of the drawings and Fig. 2, Fig. 1 show the module knot of the wave absorption liquid level ruler based on hollow rigid tube body
Structure, Fig. 2 shows the conductive contact distribution schematic diagrams of the wave absorption liquid level ruler based on hollow rigid tube body.
It is noted that the wave absorption liquid level ruler based on hollow rigid tube body is equally spacedly set along liquid level vertical direction
Several conductive contacts are put, while are additionally provided with a grounding body flooded by conducting liquid.When liquid level does not flood conductive contact,
Insulating air is full of between the conductive contact and grounding body that are not submerged, therefore the conductive contact output high potential not being submerged.
When liquid level rises, when gradually flooding conductive contact, the conductive contact and grounding body being submerged are short-circuit, therefore the conduction being submerged is touched
Point output low potential.In other words, all conductive contacts more than liquid level are high potential, and all below liquid level
Conductive contact exports low potential by conducting liquid short circuit.According to current potential difference it may determine that the real time position of liquid level.
It is noted that for corrosion is avoided to cause the security risks such as leakage current, the end of above-mentioned conductive contact is preferably adopted
It is made of the graphite not with conducting liquid (for example, seawater) electrochemical reaction.Conductive contact is made according to common metal, with leading
The contact for a long time of electro-hydraulic body may lead to conductive contact, and there are weak currents at work.
Preferably, the vertical interval of adjacent conductive contact is 5 millimeters;Every group of conductive contact is 32, altogether 14 groups.Change and
Yan Zhi, the resolving power of the wave absorption liquid level ruler based on hollow rigid tube body and accuracy are correspondingly controlled at 5 millimeters.
Preferably, each conductive contact be external in independently of each other pull-up resistor (using 4 conductive contacts as example in Fig. 1,
It is correspondingly provided with R1 to R4 and amounts to 4 pull-up resistors).Meanwhile each conductive contact is external in level catch circuit simultaneously, so as to
The level state (high level or low level) of each conductive contact is obtained by level catch circuit, according to each conductive contact
Low and high level state convert to obtain liquid level.
Referring to Fig. 3 and Fig. 4 of attached drawing, according to above preferred embodiment, the wave absorption liquid level based on hollow rigid tube body
Ruler includes liquid level sensor module 10, and the liquid level sensor module includes insulated mounting plate 12 and the conductive contact being serially connected
11, each conductive contact 11 is plugged in insulated mounting plate 12.
Wherein, each conductive contact 11 includes contact site 111 and conduction copper column 112 made of graphite, above-mentioned contact site
111 are inscribed in one end end of conduction copper column 112, and the other end end of the conduction copper column 112 is plugged in insulated mounting plate 12.
Wherein, circuit board 13, above-mentioned electricity are equipped between the conduction copper column 112 of each conductive contact 11 and insulated mounting plate 12
Road plate 13 is fixedly connected by screw with insulated mounting plate 12.
Wherein, sealing is filled between the conduction copper column 112 of the insulated mounting plate 12, circuit board 13 and conductive contact 11
Glue further enhances waterproof insulation performance.
Further, the wave absorption liquid level ruler based on hollow rigid tube body further includes hollow rigid tube body 20, the liquid
Level sensor module 10 is built in hollow rigid tube body 20, and the hollow rigid tube body 20 is carried for entire liquid level sensor module 10
For rigid support, the both sides of the insulated mounting plate 12 are fixedly connected simultaneously with the madial wall of hollow rigid tube body 20, in described
The inner surface of empty rigidity tube body 20 inwardly surrounds the accommodating chamber to be formed and can accommodate liquid level sensor module 10, and conducting liquid is accommodating
Intracavitary plays wave absorbing function, and conductive contact 11 is formed into a loop with the conducting liquid (for example, seawater) in accommodating chamber.
Wherein, the hollow rigid tube body 20 is made of titanium alloy.
Wherein, the contact site 111 of the conductive contact 11 also can be used pure platinum, proof gold, titanium platinum plating, copper it is gold-plated in any
A kind of material is made.
For a person skilled in the art, the technical solution recorded in foregoing embodiments can still be repaiied
Change or equivalent replacement is carried out to which part technical characteristic, within the spirit and principle of the utility model, that is made is any
Modification, equivalent replacement, improvement etc., should be included in the scope of protection of the utility model.