CN201876266U - Device for measuring pipeline track - Google Patents

Abstract

A device for measuring a pipeline track consists of a measuring part, a power supply part and righting devices, wherein the measuring part is connected with the power supply part in a hinged manner; the righting devices are mounted on the measuring part and the power supply part respectively and ensure that data measured by the measuring part are closer to the actual track of the pipeline; a small-diameter exploring tube is applied to the measuring part and matched with the righting devices in different diameters, so that the device can be applied to the pipelines in different diameters; when the device is being measured, the exploring tube enters from one end of the pipeline and the posture of the instrument is ensured to be consistent with the actual posture of the axial line in the pipeline by using the righting devices; the data are acquired according to the preset work mode; and the exploring tube is pulled by a lightweight winch to the other end of the pipeline. The data acquired by the exploring tube is processed by upper computer software so as to prevent the data errors of the pipeline track from being accumulated. According to the data processing system, by adopting a method of calculating from two ends to the middle, the accumulated errors are reduced.

Description

A kind of device that is used for the pipeline trajectory measurement

Affiliated technical field

The utility model relates to a kind of device of pipeline trajectory measurement, is specifically related in the municipal construction device to the trajectory measurement of existing pipeline.

Background technology

At present, the pipeline trajectory measurement is widely used in the municipal construction of city, to of the remote past or before the track of embedded pipe can not determine, and then influenced the design of new pipeline track, so, in new design pipeline track, need measure the track of embedded pipe in advance, so that the pipeline of in new design or work progress, avoiding having buried.Pipeline trajectory measurement instrument for electromagnetism pipeline orientator commonly used in the engineering and spy end radar type on the size, generally be applicable to that all endoporus surpasses the pipeline of 80mm, and internal diameter can't enter then and well set upright and measure less than the duct survey instrument of 80mm.The purpose of this utility model is exactly in order to solve the measurement of small-bore tubing road track, also be adapted to simultaneously the measurement of large diameter pipeline track, in addition, a kind of data processing Calculation Method is provided, thereby the track that makes measurement is more near the actual path of pipeline, so that the more basic data that design is provided, constructs to municipal sector.

Summary of the invention

Change the surveying instrument of various outer diameter in order to solve the internal diameter of the pipeline different needs, the utility model provides a kind of device that is used for the pipeline trajectory measurement, can under the pipeline of different inner diameters, realize measuring, reduce measuring error by data handling system simultaneously, double measuring accuracy.

The technical scheme that its technical matters that solves the utility model adopts is: by measure portion, power pack, erection device is formed, can be divided into one or more pipe nipple, be convenient to instrument by the little pipeline of radius of turn, adopt between pipe nipple and flexibly connect, each pipe nipple is equipped with erection device, the data that erection device assurance measure portion is measured and the actual path of pipeline are more approaching, measure portion adopts the minor diameter inserting tube, the erection device of supporting different-diameter, so that be applicable to the pipeline of different-diameter, during measurement, inserting tube enters from an end of pipeline, the actual attitude that guarantees instrument attitude and pipeline axis by erection device is consistent, carries out image data according to the mode of operation that sets in advance, and the other end of pipeline arrives the other end of pipeline with the winch pulling inserting tube of lightweight.Use the data point staging treating of data processing software with whole collection, handle data earlier from first to mid point, draw out the track of half pipeline, and then from the mid point to the terminal point, draw the track of other half pipeline, at last two pipeline tracks are merged, to reduce cumulative errors, main performing step has:

Calculate the vertical depth increment of current data point earlier;

Calculate the ordinate of orthogonal axes increment of current data point then;

Calculate the transverse axis increment of coordinate of current data point again;

Calculate the horizontal shift of current data point at last.

The beneficial effects of the utility model are, and are by joining the pipeline of the suitable different inner diameters of different erection devices, simple in structure.Reduce cumulative errors by carrying out Calculation Method to the centre, double measuring accuracy from the management two ends.

Description of drawings

Accompanying drawing is a measurement mechanism one-piece construction sectional view

Among the figure, 1. measure portion, 2. power pack, 3. erection device

Embodiment

In order to make those skilled in the art person understand the scheme that the utility model method is implemented better, the technical scheme to the device of implementing the pipeline trajectory measurement describes below.

The utility model is a measuring sensor by three mutual uneven acceleration transducers and three mutual uneven geomagnetic sensors on principle, by measure terrestrial gravitation at component on three sensors and terrestrial magnetic field the component on three geomagnetic sensors, determine the attitude of measure portion with respect to gravity field and terrestrial magnetic field.

In the realization of structure, with reference to accompanying drawing, mainly form by measure portion (1), power pack (2), erection device (3), can be divided into one or more pipe nipple, be convenient to instrument by the little pipeline of radius of turn, adopt between pipe nipple to flexibly connect, each pipe nipple is equipped with erection device (3), and erection device (3) guarantees that surveying instrument is in the center of pipeline.

In the actual measurement of carrying out the pipeline track, this pipeline trajectory measurement instrument carries out moving of fixed range under the pulling of winch.In moving process, by control to the time, instrument carries out in the gatherer process of data during pause, can produce error inevitably, will cause so finally according to this fixing error of the relative coordinate calculated of three parameters in inclination angle, orientation of displacement and apparatus measures, image data is many more, and distance is long more, and then cumulative errors can be big more.Based on this kind situation, the computing method that the utility model provides are the data point staging treating with whole collection, handle the data from first to mid point earlier, draw out the track of half pipeline, and then from the mid point to the terminal point, draw the track of other half pipeline, calculate tracks with two at last and merge.Data after according to said method handling, whole error just can reduce half.Below calculation process is described:

In the measurement, it is X rice (X is an even number) that our hypothesis is selected the distance that B selects from A, whenever move predetermined 1 meter measure portion image data of distance once, so from A to the B image data, actual acquisition is counted and is (X+1) point, mid point is the X/2+1 point so, and then value of fathoming of inclination angle, the orientation number of degrees of each point that goes out according to apparatus measures and each data point of inserting, by the track computing, obtain in the horizontal projection of each measurement point each point coordinate (H, S) in each point coordinate (N, E) and vertical section.Carry out graphic plotting according to these two kinds of coordinate figures, just can obtain pipeline accurately level overlook trajectory diagram and lateral vertical side sectional view, below be the content of track arithmetic section:

Each project of measuring channel trajectory measurement

A inclination alpha unit (°)

B position angle φ unit (°)

C measures length L unit (m)

Each project that pipeline calculates:

A) the vertical depth incremental computations of current data point:

$\mathrm{\ΔHi}=\frac{\mathrm{\ΔLi}}{2}(\sin a_{i-1}+{\cos a}_i)\frac{2}{\sqrt{{\mathrm{\Δ\α}}^2+{\mathrm{\Δ\φ}}^2{\sin }^2\frac{{\mathrm{\α}}_i+{\mathrm{\α}}_{i-1}}{2}}}\frac{\sqrt{{\mathrm{\Δ\α}}^2+{\mathrm{\Δ\φ}}^2{\sin }^2\frac{{\mathrm{\α}}_i+{\mathrm{\α}}_{i-1}}{2}}}{2}$

B) the ordinate of orthogonal axes incremental computations of current data point

${\mathrm{\ΔN}}_i=\frac{{\mathrm{\ΔL}}_i}{2}({\sin \mathrm{\α}}_{i-1}\cos {\mathrm{\φ}}_{i-1}+\sin {\mathrm{\α}}_i\cos {\mathrm{\φ}}_i)\frac{2}{\sqrt{{\mathrm{\Δ\α}}^2+{\mathrm{\Δ\φ}}^2{\sin }^2\frac{{\mathrm{\α}}_i+{\mathrm{\α}}_{i-1}}{2}}}\mathrm{tg}\frac{\sqrt{{\mathrm{\Δ\α}}^2+{\mathrm{\Δ\φ}}^2{\sin }^2\frac{{\mathrm{\α}}_i+{\mathrm{\α}}_{i-1}}{2}}}{2}$

C) the transverse axis increment of coordinate of current data point calculates

${\mathrm{\ΔE}}_i=\frac{{\mathrm{\ΔL}}_i}{2}(\sin {\mathrm{\α}}_{i-1}\sin {\mathrm{\φ}}_{i-1}+\sin {\mathrm{\α}}_i\sin {\mathrm{\φ}}_i)\frac{2}{\sqrt{{\mathrm{\Δ\α}}^2+{\mathrm{\Δ\φ}}^2{\sin }^2\frac{{\mathrm{\α}}_i+{\mathrm{\α}}_{i-1}}{2}}}\mathrm{tg}\frac{\sqrt{{\mathrm{\Δ\α}}^2+{\mathrm{\Δ\φ}}^2{\sin }^2\frac{{\mathrm{\α}}_i+{\mathrm{\α}}_{i-1}}{2}}}{2}$

D) horizontal shift of current data point

$S_i=\sqrt{{(N_0-N_i)}^2+{(E_0-E_i)}^2}$

After calculating is finished, can be with (N _I-1+ Δ N _i) carry out the drafting of level and vertical two figure according to the coordinate result who calculates.

More than the embodiment of the utility model method and system is described in detail, and set forth embodiment and realized the method that the output data precision improves in actual use.The explanation of above examples of implementation just is used for helping to understand the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model method, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as the restriction that this method utility model is used.

Claims (1)

1. device that is used for the pipeline trajectory measurement, mainly form by measure portion (1), power pack (2), erection device (3), it is characterized in that to be divided into one or more pipe nipple, be convenient to instrument by the little pipeline of radius of turn, adopt between pipe nipple to flexibly connect, each pipe nipple is equipped with erection device (3).