CN105352401A - Pipe length measuring instrument and measuring method - Google Patents

Abstract

The invention discloses a pipe length measuring instrument and method. The pipe length measuring instrument comprises a measuring tape and a drawing head connected with one end of the measuring tape, and further comprises a measuring adapter sleeved at the head end of a pipe to be measured; the measuring adapter is funnel-shaped and is provided with a through hole on the side wall; one end, connected with the drawing head, of the measuring tape extends into the pipe to be measured via the through hole; the head end of the pipe to be measured is connected with a gas source or a water source; and a clamp for fixing the drawing head is arranged at the tail end of the pipe to be measured. The traditional manual measuring method or other out-of-pipe measuring method has the disadvantages of poor operability, high labor strength, high environment influence, low measurement accuracy and low working efficiency, whereas the pipe length measuring instrument for directly reading the measurement result during pipe length measurement has the advantages of measurement accuracy, small error, high precision, simplicity in operation, high efficiency and the like.

Description

Pipeline length measuring instrument and measuring method

technical field

The invention relates to the technical field of measurement, in particular to an engineering measuring instrument, in particular to a pipeline length measuring instrument and a measuring method.

Background technique

Many existing pipes are either buried in walls, buried underground, or in complex pipe network systems, and their length measurement is a difficult problem in geometric measurement. Traditional manual measurement methods or other external measurement methods are used. , which has poor operability, high labor intensity, and is greatly affected by the environment, resulting in low measurement accuracy and poor work efficiency.

Contents of the invention

In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a concealed pipeline length measuring instrument and method. The present invention saves space, has low cost, is safe to use, easy to operate and has a long service life. Provides fast and accurate pipe length and inside diameter data for engineering applications.

The technical scheme adopted in the present invention:

A pipe length measuring instrument comprises a measuring tape 1 and a pulling head 2. One end of the measuring tape 1 is connected with the traction head 2 .

In addition, a measurement adapter 4 is also provided.

The measuring adapter 4 is a tube body with wide ends and a narrow middle. The top opening of the measuring adapter 4 is used to connect to an air source or a water source, which is an air inlet or a water inlet. The bottom opening of the measuring adapter 4 is used to connect the pipeline to be measured, which is the air outlet or the water outlet.

A through hole 5 is formed on the side wall of the measuring adapter 4 . The end of the measuring tape 1 connected to the traction head 2 passes through the through hole 5 and extends into the measuring adapter 4 .

Adopt the measuring method of a kind of pipeline length measuring instrument of the present invention, carry out as follows:

Step 1: Install the measuring adapter 4 on one end of the pipeline to be tested through the installation plate and its supporting frame, and extend the measuring tape 1 connected with the traction head 2 into the pipeline to be tested through the through hole on the measuring adapter 4 .

Step 2: Connect the top opening of the measuring adapter 4 to an air source or a water source. Turn on the air source or the water source, and make the end of the measuring tape 1 connected with the traction head 2 advance along the trend in the pipeline to be measured by means of the air pressure or water pressure.

Step 3: After the end of the measuring tape 1 connected to the tractor 2 advances to the other end of the pipeline to be tested by means of air pressure or water pressure, fix the tractor 2 to the tail end of the pipeline to be tested with a clamp.

Step 4: Tighten the measuring tape 2, read the scale on the measuring tape 2, and obtain the length of the pipe to be tested.

Beneficial effects of the present invention:

The invention aims at the disadvantages of traditional manual measurement method or other external measurement methods, which have poor operability, high labor intensity and great environmental influence, resulting in low measurement accuracy and poor work efficiency. The method directly reads the measurement result when measuring the length of the pipeline, and has the advantages of accurate measurement, small error, high precision, simple operation, strong practicability, high efficiency and the like.

Description of drawings

FIG. 1 is a schematic structural diagram of a traction head 2 and a measuring tape 1 in the present invention.

Fig. 2 is a schematic diagram of the structure and usage state of the measuring adapter 4, the traction head 2 and the measuring tape 1 in the present invention.

detailed description

The present invention will be described in further detail below in conjunction with specific embodiments.

Referring to FIG. 1 , a pipe length measuring instrument includes a measuring tape 1 and a pulling head 2 . One end of the measuring tape 1 is connected with the traction head 2 .

Referring to FIG. 2 , a measurement adapter 4 is also provided.

The measuring adapter 4 is a tube body with wide ends and a narrow middle. The top opening of the measuring adapter 4 is used to connect to an air source or a water source, which is an air inlet or a water inlet. The bottom opening of the measuring adapter 4 is used to connect the pipeline to be measured, which is the air outlet or the water outlet.

A through hole 5 is formed on the side wall of the measuring adapter 4 . The end of the measuring tape 1 connected to the traction head 2 passes through the through hole 5 and extends into the measuring adapter 4 .

Further, the shape of the pulling head 2 is an elliptical cone.

Furthermore, a clamp is provided on the traction head 2 . When the measuring tape 1 connected with the traction head 2 is moved from one end of the pipe to be tested to the other end of the pipe to be tested under the action of the air flow or water flow, the measuring tape 1 connected with the traction head 2 is fixed on the pipe to be tested by the clamp. Measure the opening at the other end of the pipe.

Furthermore, a booster device is provided at the top opening of the measuring adapter 4 . The pressure of the liquid or gas is increased by the pressurizing device and then input into the measuring adapter 4, so that the measuring tape 1 connected with the traction head 2 is driven to move along the direction of air flow or water flow.

Furthermore, the length of the measuring tape 1 is between 2 and 50 m. The material of the measuring tape 1 is plastic and rubber.

The material density of the traction head 2 is less than that of water.

Furthermore, the pressure of the pressurizing device is not greater than 0.6Mpa to avoid damage to the pipeline.

Referring to Fig. 2, adopt the measuring method of a kind of pipeline length measuring instrument of the present invention, carry out as follows:

Step 1: Install the measuring adapter 4 on one end of the pipeline to be tested through the installation plate and its supporting frame, and extend the measuring tape 1 connected with the traction head 2 into the pipeline to be tested through the through hole on the measuring adapter 4 .

Step 2: Connect the top opening of the measuring adapter 4 to an air source or a water source. Turn on the air source or the water source, and make the end of the measuring tape 1 connected with the traction head 2 advance along the trend in the pipeline to be measured by means of the air pressure or water pressure.

Step 3: After the end of the measuring tape 1 connected to the tractor 2 advances to the other end of the pipeline to be tested by means of air pressure or water pressure, fix the tractor 2 to the tail end of the pipeline to be tested with a clamp.

Step 4: Tighten the measuring tape 2, read the scale on the measuring tape 2, and obtain the length of the pipe to be tested.

The preferred scheme is that the measuring adapter 4 is funnel-shaped and has a through hole 5 on the side wall, and one end of the measuring tape 1 connected to the traction head 2 extends into the pipeline 3 to be measured through the through hole 5, and the pipe 3 to be measured The head end is connected to an air source or a water source, and the tail end of the pipeline 3 to be tested is provided with a clamp for fixing the pulling head 2 .

The preferred solution is that the traction head 2 is in the shape of an elliptical cylinder, and the material is soft.

Claims (8)

1. A pipe length measuring instrument, characterized in that: it comprises a measuring tape (1) and a traction head (2); one end of the measuring tape (1) is connected to the traction head (2). 2. A pipeline length measuring instrument according to claim 1, characterized in that: there is also a measuring adapter (4); The measuring adapter (4) is a tube with wide ends and a narrow middle; the top opening of the measuring adapter (4) is used to connect the air source or water source, which is the air inlet or water inlet; the measuring adapter (4) The bottom opening of the pipe is used to connect the pipe to be tested, which is the air outlet or water outlet; There is a through hole (5) on the side wall of the measuring adapter (4); after the end of the measuring tape (1) connected to the traction head (2) passes through the through hole (5), it extends to the measuring turn in the connector (4). 3. A pipeline length measuring instrument according to claim 2, characterized in that the shape of the pulling head (2) is an elliptical cone. 4. A pipeline length measuring instrument according to claim 2, characterized in that: a clamp is provided on the tractor head (2); when the measuring tape (1) connected with the tractor head (2) is in the air or water flow Under the action, when moving from one end of the pipeline to be tested to the other end of the pipeline to be tested, the measuring tape (1) connected with the traction head (2) is fixed at the opening of the other end of the pipeline to be tested by the clamp. 5. A pipeline length measuring instrument according to claim 2, characterized in that: a booster device is provided at the top opening of the measuring adapter (4); through the booster device, the pressure of the liquid or gas is increased and then input The measuring adapter (4) drives the measuring tape (1) connected with the traction head (2) to move along the direction of airflow or water flow. 6. A pipeline length measuring instrument according to claim 2, characterized in that: the length of the measuring tape (1) is between 2 and 20m; the material of the measuring tape (1) is plastic; The material density of the traction head (2) is less than that of water. 7. A pipeline length measuring instrument according to claim 6, characterized in that: the pressure of the pressurizing device is not greater than 0.6Mpa. 8. adopt the measuring method of a kind of pipeline length measuring instrument described in claim 2 to 7, it is characterized in that: carry out as follows: Step 1: Install the measuring adapter (4) on one end of the pipeline to be tested, and extend the measuring tape (1) connected to the traction head (2) into the pipeline to be tested through the through hole on the measuring adapter (4) ; Step 2: Turn on the air source or water source, and use the air pressure or water pressure to make the end of the measuring tape (1) connected to the traction head (2) move forward in the pipeline to be tested; Step 3: When the end of the measuring tape (1) connected to the pulling head (2) advances to the other end of the pipeline to be tested by means of air pressure or water pressure, fix the pulling head (2) on the pipeline to be tested with a clamp end of Step 4: Tighten the measuring tape (2), read the scale on the measuring tape (2), and obtain the length of the pipe to be tested.