CN113791458A

CN113791458A - Constant temperature field geophysical prospecting device with known inlet pipeline

Info

Publication number: CN113791458A
Application number: CN202111189837.1A
Authority: CN
Inventors: 张继红
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-07
Filing date: 2021-10-07
Publication date: 2021-12-14

Abstract

The invention relates to a constant temperature field geophysical prospecting device of a known inlet pipeline in the field of engineering geophysical prospecting engineering, which comprises five parts, namely a sealing tank (1), a heater (2), an electric lead (3), heat transfer liquid (4) and a liquid guide pipe (5), wherein the sealing tank (1) is a sealed hollow component, the heater (2) is a device with a heating function, the liquid guide pipe (5) is a hollow tubular component, the heater (2) and the heat transfer liquid (4) are positioned in the sealing tank (1), the electric lead (3) is connected with the heater (2), the electric lead (3) passes through the sealing tank (1), the liquid guide pipe (5) is communicated with the sealing tank (1), the device can utilize the characteristics of stable heat conductivity coefficient of a geotechnical body and clear distribution rule of a temperature field in the geotechnical body, the constant temperature field pipeline geophysical prospecting device is used for heating in the pipeline, and then the temperature field is measured at an operation surface position, the distribution and the buried depth of the pipeline are judged, the precision is high, the reliability is high, the speed is high, and the manufacturing cost is low.

Description

Constant temperature field geophysical prospecting device with known inlet pipeline

Technical Field

The invention relates to a constant temperature field geophysical prospecting device of a known inlet pipeline in the field of engineering geophysical prospecting.

Background

The engineering geophysical prospecting is a subject field for detecting the distribution and buried depth of underground pipelines, structures or obstacles in rock-soil bodies, and the existing engineering geophysical prospecting device mainly utilizes the propagation of electromagnetic fields, ultrasonic waves and Rayleigh waves and the reaction detection when the electromagnetic fields, the ultrasonic waves and the Rayleigh waves meet the detected objects to achieve the purpose of engineering geophysical prospecting and comprises a geological radar, a blockage detector, a wave velocity instrument, an electromagnetic detecting instrument and the like. At present, the precision and reliability of engineering geophysical prospecting are low, and especially when no metal member or metal member is staggered in an underground pipeline, the precise detection is difficult to realize due to shielding of electromagnetic induction or no phenomenon of electromagnetic induction. Under the working conditions, when the position of the inlet and the outlet of the pipeline is known, under the condition that measuring personnel or equipment are difficult to enter the pipeline to determine the position of the pipeline, how to accurately detect the distribution and the burial depth of the pipeline in the rock-soil mass is still a difficult problem in the field of engineering geophysical prospecting engineering.

Disclosure of Invention

The invention aims to provide a constant temperature field geophysical prospecting device for a known inlet pipeline, which is particularly suitable for the accurate detection of the communicable position and the burial depth of the known inlet pipeline, and has the advantages of high speed, high accuracy and high reliability.

The constant temperature field geophysical prospecting device of the known inlet pipeline comprises five parts, namely a sealing tank, a heater, a conducting wire, heat transfer liquid and a liquid guide pipe, wherein the sealing tank is a sealed hollow component, the heater is a device with a heating function, the liquid guide pipe is a hollow tubular component, the heater and the heat transfer liquid are located in the sealing tank, the conducting wire is connected with the heater, the conducting wire penetrates through the sealing tank, and the liquid guide pipe is communicated with the sealing tank.

In the known constant temperature field geophysical prospecting device of the inlet pipeline, the outer surface of the sealing tank part is provided with the heat preservation film.

In the known constant temperature field geophysical prospecting device of the inlet pipeline, a length measuring device is arranged on the sealed tank.

The constant-temperature-field pipeline geophysical prospecting device can utilize the characteristics of stable heat conductivity coefficient of the rock-soil body and clear distribution rule of the temperature field in the rock-soil body, utilizes the constant-temperature-field pipeline geophysical prospecting device to generate heat in the pipeline, measures the temperature field at the position of the operation surface, judges the distribution and the burial depth of the pipeline, and has the advantages of high precision, high reliability, high speed and low manufacturing cost.

Drawings

FIG. 1 is a schematic cross-sectional view of a known entrance tunnel geophysical prospecting apparatus used in accordance with an embodiment of the present invention.

Detailed Description

The construction and operation of the known entrance pipeline constant temperature field geophysical prospecting device of the invention are described below with reference to fig. 1 as an embodiment of the invention. The constant temperature field geophysical prospecting device for the known inlet pipeline comprises five parts, namely a sealing tank (1), a heater (2), a conducting wire (3), heat transfer liquid (4) and a liquid guide pipe (5), wherein the sealing tank (1) is a sealed hollow component, the heater (2) is a device with a heating function, the liquid guide pipe (5) is a hollow tubular component, the heater (2) and the heat transfer liquid (4) are located in the sealing tank (1), the conducting wire (3) is connected with the heater (2), the conducting wire (3) penetrates through the sealing tank (1), and the liquid guide pipe (5) is communicated with the sealing tank (1). In the embodiment, the heat transfer liquid (4) in the sealed tank (1) is heated by using the electric lead (3) connected to the operation surface, so that the temperature of the heat transfer liquid (4) is raised and is conducted to the side wall of the sealed tank (1), the sealed tank (1) is a constant-temperature heat source, after the sealed tank (1) is fed into a pipeline through a known pipeline inlet, the heat in the sealed tank (1) is conducted in rock-soil bodies, the temperature is measured and calculated at the position of the operation surface, the position of the highest point of the temperature is the position where the sealed tank (1) is located, and is also the position of the pipeline at the measuring point, and the distance between the pipeline at the point and the operation surface is calculated through measurement of the thermal conductivity of the rock-soil bodies, so that the distribution and the burial depth of the pipeline at the measuring point are determined. The distribution and the burial depth of the whole pipeline can be measured and calculated by changing the position of the sealing tank (1). In the embodiment, when the device is used for measuring and calculating the intersection position of the intersected pipelines in the rock-soil mass, the temperature can be measured and calculated on the inner surface of one pipeline, the sealing tank (1) is moved in the other pipeline, and the position corresponding to the highest temperature point is the intersection position. In the embodiment, because the heat dissipation in the rock-soil body is faster, the temperature of the sealed tank (1) can be always kept at the boiling point temperature of the heat transfer liquid (4) by installing the liquid guide pipe (5), a constant temperature field can be formed in the rock-soil body, meanwhile, the sealed tank (1) can be prevented from being exploded or damaged due to the overhigh temperature of the heat transfer liquid (4), and the heat transfer liquid (4) can be timely supplemented into the sealed tank (1) at the position of an operation surface. In the embodiment, in order to save energy, a heat preservation film can be arranged on part of the outer surface of the sealing tank (1) to realize directional heating in rock-soil mass. In the embodiment, a length measuring device can be arranged on the sealing tank (1) to determine the depth of the sealing tank (1) entering the pipeline during detection. In this embodiment, liquids with different boiling points, such as water, various oils, etc., can be selected as the heat transfer liquid (4).

This patent includes, but is not limited to, other similar devices and methods that may be substituted by those skilled in the art.

Claims

1. A constant temperature field geophysical prospecting device for a known inlet pipeline is characterized by comprising a sealed tank (1), a heater (2), a conductive wire (3), heat transfer liquid (4) and a liquid guide pipe (5), wherein the sealed tank (1) is a sealed hollow component, the heater (2) is a device with a heating function, the liquid guide pipe (5) is a hollow tubular component, the heater (2) and the heat transfer liquid (4) are located in the sealed tank (1), the conductive wire (3) is connected with the heater (2), the conductive wire (3) penetrates through the sealed tank (1), and the liquid guide pipe (5) is communicated with the sealed tank (1).

2. The device for geophysical prospecting for constant temperature fields with known access ducts as claimed in claim 1, characterized in that a heat-insulating film is provided on part of the outer surface of said containment vessel (1).

3. The device for geophysical prospecting for constant temperature fields with known access ducts as claimed in claim 1, characterized in that the length measuring means are arranged on the containment vessel (1).