JPS5960208A - Differential pressure type tilt angle measuring device - Google Patents

Abstract

PURPOSE:To measure the slant angle of a structure and the like, by providing containing tubes having a specified length for a sealing liquid, whose specific gravity is known, in the slant direction of a substrate to be measured, and measuring the differential pressure at the central part by a differential pressure transmitting device. CONSTITUTION:Capillary tubes 2 and 3 are connected to the high pressure side and the low pressure side of a diaphragm type differential pressure transmitting device 1. Containers 4 and 5 having diaphragms are connected to the tips of the tubes. The containers are filled with a sealing liquid 6 in a hermetically sealed manner. The parts wherein the sealing liquid 6 is contained are fixed to a substrate 7 in a straight line. The specific gravity of the sealing liquid 6 is made to be gamma, the distance between the containers 4 and 5 with diaphragms is made to be l, and the height is made to be (h). Then the differential pressure h.gamma is detected, and a slant angle theta is measured. When the substrate 7 is horizontal, the differential pressure detected by the differential pressure transmitting device 1 is zero. These members are coated by a cover 8 so as to reduce the effect of the change in ambient temperature, and the measuring accuracy is improved.

Description

[Detailed Description of the Invention] [Outside of the use of the invention 'Jf J Ships and 4-1° positioning')) I] Differential pressure type using a crab river transmission device in gauging Slope 774 AA Adds +5J to the footrest.

1 (Technology) Conventionally, when ti<flj of relics, etc. (when the oblique angle could be measured, it was done using the sujiid low resistance yI÷ or the
The measured shun drums were not good. Recently, there was a request to measure the inclination angle of the tressure arm of a tressure ship with an error within ±1%, but since this is not possible with conventional methods, the use of a differential pressure transmitter can solve this problem. tried to achieve. Incidentally, there is no known example d in which a differential pressure transmitter is used in this field.

[LL type of invention]

The aim is to provide a new high-performance inclination angle measuring device.

[R5R connected to the chamber side and low pressure side of the diaphragm differential pressure transmitter]
'% J (can be attached to each tip of the capillary tube and this key capillary tube, T3:
'!・Fill one human fluid and fill one board-hi with 111
It is arranged in a linear manner, and the specific gravity of the injected liquid is γ, and the pair of n.
When the specific gravity between the two containers is tl, and the difference in taste is h, then
11. Find the tilt angle θ using the differential pressure γ.

[Embodiments of the invention]

FIG. 2 is a 1Afi side view of the differential pressure type #i beveled redundant device which is an embodiment of the present invention. Capillary tubes 2 and 3 are connected to the pressure side and low pressure side of the diaphragm type differential pressure transmitter 1, respectively, and containers 4 and 5 with diaphragms are connected to the 16 portions of the tubes, and a personal liquid 6 is placed inside the capillary tubes 2 and 3. ing.

The part containing these personal liquids 6 is placed on a strong substrate 7.
:r4, i6: Fixed to j. This substrate 7 is washed with water 31
7, the differential pressure exerted on the X transmitter 1 becomes d-zero. In addition, these )♂+! $4'r
1 ('i) Either the cover 8 is covered with a heating agent to reduce the effects of changes in ambient temperature, or air or liquid at a constant temperature D[ is constantly passed through the cover 8. Shift Q': In addition, the side force (A1') is 21, and the improvement is 1.

Fig. 2 is a plan view of lO' in which the differential pressure type M oblique angle 611] of Fig. 1 is changed from the state where θ/irradiation angle is 1.
At this time, the differential pressure transmitter 1 generates a differential pressure of (X, and emits light in proportion to this.

", r = t, sin θ, γ - (1)
However, the distance between both ends of the part where human fluids are sealed is IA.
11, h, Takatsuki, 7';', r indicates the tight expansion of the filled liquid. Therefore, since t and γ do not change, 1't is applied by the differential pressure force/differential pressure transmitter 1 in proportion to sin θ.

For example, t-1000wn1 θmaX: 45°, γ
= 0.96, the maximum differential pressure is 678.8 mm.
H20, which is a differential pressure that can be sufficiently measured by the differential pressure transmitter 1. ``I used silicone oil as a human liquid 6.'' Noishiai said that the specific gravity r changes by about 1% when it changes by 10 tr. It is valid. In addition, when using a filled liquid whose ratio changes little even when the temperature rises, dl, and measurement speed e
I'll improve.

The differential pressure type inclination angle measuring device j6 of this embodiment measures the inclination angle [
7. What shall I do? By installing a filled liquid storage tube of length l with a known ratio v and r in the diagonal direction of the llt plate 70M, and measuring the differential pressure in the medium heat section with a differential pressure transmitter, measurement accuracy has been improved compared to the conventional method. , it is possible to reduce the measurement error to within ±0.2 taro.

− to 〇selfish (ζ example, right?)
Although the tire flams 4 and 5 are connected to the ends 11] 1 of 3, respectively, these may be replaced with other flexible containers such as bellows.

〔Effect of the invention〕

Claims (1)

[Claims] 1-1'+', 11i! High pressure at
and the low pressure side connected to the key X vigilance cove and this gear pillar. C are arranged linearly on one substrate, and the specific gravity of the above-mentioned sealed liquid is ) When the distance 1i1i: between the vessels is t and the difference in crystallinity is 11, the difference ET: 1 river γ is detected and the inclination angle θ is determined 1111j. Inclination angle 1 device 6″.