CN210244590U - Simple pipeline displacement early warning device - Google Patents

Abstract

The utility model relates to a pipeline displacement monitoring technology field, concretely relates to simple and easy pipeline displacement precaution device. The simple pipeline displacement early warning device comprises a fixed support, a probe, an elastic part and an early warning circuit, wherein the front end of the probe is provided with a pipeline contact, and the elastic part is assembled on an installation seat and applies jacking force towards the side wall of a pipeline to the probe; the early warning circuit comprises a power supply, an alarm, a fixed contact and a movable contact, wherein an alarm position and an initial position in front of the alarm position are arranged on a moving stroke of the movable contact moving back and forth along with the probe, the movable contact is in contact with the fixed contact when in the alarm position so as to conduct the early warning circuit to enable the alarm to give an alarm, when in the initial position, a pipeline contact is set to be in contact with the side wall of a pipeline, the initial position and the alarm position have a set safety distance in the front-back direction, and the safety distance is smaller than the maximum displacement allowing the pipeline to move. The device is simple in structure composition and low in cost, and solves the technical problems that the early warning device is high in cost and troublesome to install in the prior art.

Description

Simple pipeline displacement early warning device

Technical Field

The utility model relates to a pipeline displacement monitoring technology field, concretely relates to simple and easy pipeline displacement precaution device.

Background

In oil extraction operation, oil in an oil production well usually needs to be transported to a remote place such as a processing plant or an oil depot through a gathering and transporting pipeline, and in the long-distance transportation process, the gathering and transporting pipeline is influenced by stress generated by factors such as temperature change of a transportation medium (oil), ground settlement and the like, so that a displacement phenomenon is generated on part of the gathering and transporting pipeline. When the displacement of gathering pipeline surpasses safe scope, can make the pipeline appear the crack, endanger pipeline safety, even more can lead to pipeline disconnection, carry medium to reveal, take place major accident such as conflagration explosion. Therefore, in actual operation, the displacement of the gathering and transportation pipeline needs to be monitored so as to correct the displacement of the gathering and transportation pipeline before the displacement exceeds a safe range.

Similar problems not only occur in the field of oil exploitation, but also occur in other fields, such as the field of heat supply pipe networks, and in order to solve the problems, the chinese patent application with the publication number of CN109631825A discloses a heat supply pipeline displacement measurement and diagnosis system and an operating method thereof.

It can be seen that if the device is applied to the gathering and transportation pipeline in petroleum operation, the functions of monitoring the displacement value of the gathering and transportation pipeline in real time and early warning in time after the displacement value exceeds a safety range can be realized, but the device has higher cost and troublesome installation because the device comprises a displacement sensor and an upper computer, and a plurality of early warning devices are required to be arranged on the gathering and transportation pipeline, so that the overall cost is further improved, and the device is not beneficial to large-area field use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple and easy pipeline displacement precaution device for solve among the prior art early warning device cost higher, the troublesome technical problem of installation.

In order to achieve the above object, the utility model discloses simple and easy pipeline displacement precaution device adopts following technical scheme:

a simple pipeline displacement early warning device comprises a fixed support, a positioning device and a warning device, wherein the fixed support is arranged beside a pipeline and is provided with a mounting seat;

further comprising:

the probe is assembled on the mounting seat in a guiding and moving mode along the front-back direction, a pipeline contact is arranged at the front end of the probe and is used for being in contact with the side wall of the pipeline along the radial direction of the pipeline so that the probe can move backwards in a straight line under the pushing of the side wall of the pipeline when the pipeline moves towards one side of the probe;

the elastic piece is assembled on the mounting seat and applies jacking force towards the side wall of the pipeline to the probe;

the early warning circuit comprises a power supply, an alarm, a static contact and a moving contact, wherein the moving contact is arranged at the rear end of the probe, and the static contact is fixedly arranged at the rear side of the probe and is arranged opposite to the moving contact in the front-back direction; one electrode of the positive electrode and the negative electrode of the power supply is electrically connected with the moving contact through a cable, and the other electrode of the positive electrode and the negative electrode of the power supply is electrically connected with the static contact through a cable;

the alarm is connected to a cable connected with the electrode;

the moving contact is provided with an alarm position and an initial position in front of the alarm position on a moving stroke of moving back and forth along with the probe, and the moving contact is in contact with the static contact when being at the alarm position so as to conduct the early warning circuit to enable the alarm to give an alarm;

when the moving contact is at an initial position, the pipeline contact is set to be in contact with the side wall of the pipeline, a set safety distance is formed between the initial position and the alarm position in the front-rear direction, and the safety distance is smaller than the maximum displacement of the allowable pipeline displacement.

The beneficial effects of the above technical scheme are: the simple pipeline displacement early warning device is arranged beside a pipeline, when the pipeline does not displace or the displacement is within a safe distance, the moving contact and the static contact are relatively spaced from front to back, and an early warning circuit cannot be conducted; when the displacement volume of pipeline exceeded safe distance, moving contact and static contact, and the warning circuit is switched on, and the alarm reports to the police, and staff can in time rectify the pipeline position this moment, because safe distance is less than the maximum displacement volume that allows the pipeline displacement, just can in time report to the police before the pipeline reaches the maximum displacement volume like this, has avoided the emergence of incident. Meanwhile, the device is simple in structure and low in cost, and is beneficial to large-area field use on the premise of monitoring pipeline displacement in real time.

Furthermore, the mounting base is provided with a mounting cavity, guide holes for guiding and moving the probe along the mounting base are formed in the front side and the rear side of the mounting cavity, the elastic piece is assembled in the mounting cavity, a radially extending blocking structure is arranged in the circumferential direction of the probe, the blocking structure is located in the mounting cavity, and the elastic piece is in pushing fit with the probe in the front-rear direction through the blocking structure.

Furthermore, the mounting base comprises a guide sleeve and a terminal base, the guide sleeve is provided with the mounting cavity, the terminal base is provided with a first wiring terminal electrically connected with the static contact and a second wiring terminal electrically connected with the moving contact, one of the first wiring terminal and the second wiring terminal is electrically connected with the positive pole of the power supply, and the other one of the first wiring terminal and the second wiring terminal is electrically connected with the negative pole of the power supply. The first and second connecting terminals on the terminal base facilitate the connection of the static contact and the moving contact with the corresponding electrodes on the power supply.

Furthermore, a conductive sliding sleeve electrically connected with the moving contact is fixedly sleeved on the probe, the conductive sliding sleeve is positioned in the conductive sleeve, a conductive reed is further arranged in the conductive sleeve, the conductive sliding sleeve is in conductive sliding fit with the conductive reed, and the conductive reed is electrically connected with the second wiring terminal so as to realize the electrical connection of the moving contact and the second wiring terminal. The conductive part is limited in the guide sleeve through the matching of the conductive reed and the conductive sliding sleeve, so that the situation of electric leakage caused by the fact that the probe is completely arranged as a conductor when the probe is positioned at an alarm position is avoided.

Furthermore, an L-shaped conductive plate is arranged on the terminal base, one end of the conductive plate is fixed inside the terminal base and electrically connected with the first wiring terminal, the other end of the conductive plate extends backwards and bends downwards to form an overhanging end located at the rear side of the probe, the static contact is fixed on the overhanging end of the conductive plate, and the static contact is electrically connected with the conductive plate so as to realize the electrical connection between the static contact and the first wiring terminal.

Further, the quantity of probe is two, the fixed bolster includes interconnect's stand and crossbeam, and the mount pad of two probes sets up respectively on stand and crossbeam, and two probes contact with corresponding pipeline lateral wall respectively on horizontal direction and upper and lower direction to monitor the displacement of pipeline in horizontal direction and vertical direction respectively. The displacement of the pipeline is monitored in two directions, and the displacement condition of the pipeline can be further mastered.

Furthermore, the fixed bolster still includes the base, and base threaded connection is at the lower extreme of stand, and the base passes through rag bolt to be fixed in the relevant position. The base facilitates the fixing of the fixing support.

Furthermore, the upright post and the cross beam are connected with the corresponding mounting seats through universal joints. The universal joint can carry out angular rotation for the angular relation between stand and crossbeam and the corresponding mount pad can be adjusted, with better adaptation environmental requirement.

Furthermore, scales extending along the front-back direction are arranged on the side wall of the probe. The scales are arranged, so that the displacement of the pipeline can be conveniently read, and the pipeline can be more conveniently corrected.

Further, the alarm is an alarm horn.

Drawings

FIG. 1 is a schematic view of an embodiment of the simple pipe displacement warning device of the present invention used in conjunction with a pipe;

FIG. 2 is a schematic view of the assembly of the probe and the mounting seat in the embodiment of the simple pipe displacement warning device of the present invention;

FIG. 3 is a schematic diagram of the circuit principle of the early warning circuit in the embodiment of the simple pipe displacement early warning device of the present invention;

description of reference numerals: 1-fixed support, 101-upright post, 102-cross beam, 2-mounting base, 21-guide sleeve, 22-terminal base, 221-positive terminal, 222-negative terminal, 3-probe, 31-pipeline contact, 32-movable contact, 33-scale, 34-stop lever, 4-fixed contact, 5-mounting cavity, 6-guide hole, 7-pressure spring, 8-cable, 9-alarm horn, 10-pipeline, 11-base, 12-threaded hole, 13-storage battery, 14-conductive reed, 15-conductive sheet, 16-conductive sliding sleeve, 17-wire, A-alarm position, B-initial position and L-safety distance.

Detailed Description

The following further describes the embodiments of the present invention with reference to the attached drawings:

the utility model discloses simple and easy pipeline displacement precaution device's concrete embodiment:

as shown in fig. 1 to 2, the simple pipeline displacement early warning device comprises a fixing support 1 and a probe 3, wherein the fixing support 1 is arranged beside a pipeline 10, a mounting seat 2 is arranged on the fixing support 1, and the probe 3 is movably assembled on the mounting seat 2; still include early warning circuit, probe 3 is through carrying out the early warning with the displacement overrun condition of realization to pipeline 10 with early warning circuit cooperation.

The fixed support 1 comprises a vertical column 101 and a cross beam 102 which are connected with each other, probes 3 are arranged on the vertical column 101 and the cross beam 102, and the moving directions of the two probes 3 are perpendicular to each other so as to respectively perform early warning on the overrun condition of the horizontal displacement and the vertical displacement of the pipeline 10. For convenience of description, the probe 3 of the column 101 is taken as an example, and as shown in fig. 1 and fig. 2, both ends of the probe 3 itself are defined as a front end and a rear end, and the front end and the rear end described later refer to relative directions with respect to both the front end and the rear end of the probe 3 itself, not absolute directions in a three-dimensional space. The probe 3 is movably assembled on the mounting seat 2 along the front-back direction of the probe, the front end of the probe 3 is provided with a pipeline contact 31, and the pipeline contact 31 is contacted with the side wall of the pipeline 10 along the radial direction of the pipeline 10 so as to enable the probe 3 to linearly move backwards under the pushing of the side wall of the pipeline 10 when the pipeline 10 displaces towards one side of the probe 3.

Specifically, as shown in fig. 2, the mounting base 2 includes a guide sleeve 21 and a terminal base 22, the guide sleeve 21 has a mounting cavity 5 therein, the guide cavity corresponds to the front and back directions of the probe 3, guide holes 6 for guiding and moving the probe 3 along the mounting base 2 are respectively formed in the front and back sides of the mounting cavity 5, a compression spring 7 is arranged in the mounting cavity 5, the compression spring 7 is sleeved outside the probe 3 as an elastic member, two stop levers 34 extending in the radial direction are arranged in the circumferential direction of the probe 3, the stop levers 34 are located in the mounting cavity 5, and as a stop structure, the compression spring 7 is limited in the front and back directions with the guide holes 6 on the back side, the compression spring 7 applies a pushing force to the side wall of the pipe 10 on the pipe contact 31 through the stop levers 34, so that the pipe contact 31 can be stably contacted with the side wall of the pipe 10, and the compression spring 7.

As shown in fig. 1 to 3, the early warning circuit includes a storage battery 13, an alarm horn 9, a fixed contact 4 and a movable contact 32, the movable contact 32 is disposed at the rear end of the probe 3, the fixed contact 4 is fixedly disposed at the rear side of the probe 3 and is disposed opposite to the movable contact 32 in the front-rear direction, the storage battery 13 serves as a power supply, the positive electrode of the storage battery is electrically connected to the movable contact 32 through a cable 8, the negative electrode of the storage battery is electrically connected to the fixed contact 4 through the cable 8, and the alarm horn 9 serves as an alarm and is connected to the cable. In other embodiments, the alarm horn may also be connected to a cable connecting the moving contact and the positive electrode, and of course, the storage battery may also be connected to the moving contact through the cable by the negative electrode, and connected to the stationary contact through the cable by the positive electrode.

Specifically, as shown in fig. 2, the terminal block 22 in the mounting block 2 has a first terminal and a second terminal, specifically a positive terminal 221 and a negative terminal 222, which are connected to the positive electrode and the negative electrode of the battery 13 through cables. The probe 3 is provided with a narrowing section positioned in the guide sleeve 21, the narrowing section is sleeved with a conductive sliding sleeve 16 matched with the narrowing section in size, the conductive sliding sleeve 16 is connected with the movable contact 32 through a lead 17 penetrating in the probe 3, one end of the conductive reed 14 is fixed on the fixed end of the terminal seat 22, and the other end of the conductive reed is a free end extending into the guide sleeve 21. The free end of the conductive reed 14 is elastically pressed against the conductive sliding bush 16, so that the conductive sliding bush 16 is in conductive sliding fit with the conductive reed 14 in the forward and backward moving direction of the probe 3. The fixed end of the conductive spring 14 is connected to the positive terminal 221 through a conductive wire inside the terminal block 22, so that the positive terminal 221 is electrically connected to the movable contact 32.

The L-shaped conducting strip 15 is arranged on the terminal base 22, one end of the conducting strip 15 is fixed inside the terminal base 22 and is electrically connected with the negative wiring terminal 222 through a cable, the other end of the conducting strip 15 extends backwards and bends downwards to form an overhanging end located at the rear side of the rear end of the probe 3, the static contact 4 is fixed on the overhanging end of the conducting strip 15 and is electrically connected with the conducting strip 15, and therefore the electrical connection between the negative wiring terminal 222 and the static contact 4 is achieved. The surface of the conductive sheet 15 exposed outside the terminal block 22 is covered with an insulating layer, and the surface of the probe 3 outside the narrowed section is covered with an insulating layer to avoid electric leakage.

When the side wall of the pipeline 10 moves towards one side of the probe 3, the probe 3 can move back and forth along the guide sleeve 21 in a guiding manner, the movable contact 32 moves back and forth along with the probe, an alarm position A and an initial position B are arranged on the back and forth movement stroke of the movable contact 32, and when the movable contact 32 is located at the alarm position A, the movable contact 32 is contacted with the static contact 4 to conduct the early warning circuit to enable the alarm horn 9 to give an alarm; the initial position B is located in front of the alarm position A, specifically, when the movable contact 32 is located at the initial position B, the pipeline contact 31 is in contact with the side wall of the pipeline 10, the initial position B and the alarm position A have a set safety distance L in the front-rear direction, and the safety distance L is smaller than the maximum displacement allowing the pipeline 10 to displace.

Since the pipeline 10 is mostly arranged outdoors with complex and variable environment, in order to conveniently adjust the position of the probe 3, so that the pipeline contact 31 of the probe 3 contacts with the side wall of the pipeline 10 along the radial direction of the pipeline 10, in the embodiment, the mounting base 2 and the upright post 101 are connected through a universal joint (not shown in the figure), and the pipeline contact 31 of the probe 3 can be ensured to stably contact with the side wall of the pipeline 10 along the radial direction of the pipeline 10 by adjusting the angle of the universal joint.

In addition, as shown in fig. 2, a scale 33 extending in the front-back direction is further disposed on the side wall of the probe 3, when the movable contact 32 is at the initial position B, an initial value of the movable contact 32 can be determined by reading a scale value on the probe 3, when the movable contact 32 is at the alarm position a and the warning circuit is turned on to make the alarm horn 9 give an alarm, a final value of the movable contact 32 can be determined by reading the scale value of the probe 3, and a displacement of the pipeline 10 can be quickly determined according to the initial value and the final value to facilitate a worker to correct the pipeline 10.

The arrangement form of the probes 3 on the column 101 and the connection relationship with the warning circuit are introduced above, the arrangement form of the probes 3 on the beam 102 and the connection relationship with the warning circuit are the same as those of the probes 3 on the column 101, and the specific arrangement form and the connection relationship with the warning circuit may refer to the corresponding content of the probes 3 on the column 101, which is not described herein again. As shown in fig. 3, the movable contacts 32 on the two probes 3 are matched with the corresponding fixed contacts 4 to form two parallel early warning circuits, and the two probes 3 are respectively contacted with the side walls of the corresponding pipeline 10 in the horizontal direction and the up-down direction to respectively monitor the displacement of the pipeline 10 in the horizontal direction and the vertical direction.

As shown in fig. 1, the fixing bracket 1 further includes a base 11, the base 11 is a square plate-shaped structure, the base 11 is screwed at the lower end of the upright column 101, four threaded holes 12 are correspondingly formed at four corners of the base 11, the four threaded holes 12 are connected with anchor bolts (not shown) to fix the fixing bracket 1 on the ground, and meanwhile, the anchor bolts are arranged into four levelness adjusting positions of the base 11 which can also be convenient. In other embodiments, the number of the anchor bolts may be one, two, three or other numbers according to actual needs.

The utility model discloses simple and easy pipeline displacement precaution device's embodiment is when using, as shown in fig. 1, with fixed bolster 1, mount pad 2, probe 3, pressure spring 7 and battery 13, cable 8, warning loudspeaker 9, static contact 4 connects gradually, fix fixed bolster 1 at the side of pipeline 10 through rag bolt, make two probe 3's pipeline contact 31 implement the monitoring at horizontal direction and vertical direction respectively to pipeline 10's displacement, and moving contact 32 and battery 13 on two probe 3, cable 8, warning loudspeaker 9, the early warning circuit mutual independence that devices such as static contact 4 formed respectively, make the utility model discloses simple and easy pipeline displacement precaution device is independent each other at horizontal direction and the ascending displacement monitoring of vertical side to pipeline 10, each other does not influence.

Then, recording the scale value on the probe 3 as an initial value, when the side wall of the pipeline 10 moves towards one side of the probe 3, the probe 3 moves backwards, the pressure spring 7 contracts under the action of the stop lever 34, meanwhile, the moving contact 32 at the initial position B moves backwards, when the moving contact 32 is positioned between the initial position B and the alarm position A in the front-back direction, the displacement of the pipeline 10 towards the side is proved to be within the safe distance L, when the moving contact 32 is in contact with the static contact 4, and the static contact 4 reaches the alarm position A, at the moment, the early warning circuit is conducted to enable the alarm horn 9 to give an alarm, at the moment, a worker can record the scale value of the probe 3 as a final value, and correct the pipeline 10 in the corresponding direction according to the final value and the initial value. The device has simple structure and low cost, and is favorable for large-area field use on the premise of monitoring the displacement of the pipeline 10 in real time.

In this embodiment, the alarm is an alarm horn. In other embodiments, the alarm may also be an alarm light.

In this embodiment, the upright and the cross beam are connected with the corresponding mounting seats through universal joints. In other embodiments, the universal joint is not required, and the upright post and the cross beam are directly and fixedly connected with the corresponding mounting seat.

In this embodiment, the fixed bolster still includes the base, and base threaded connection is at the lower extreme of stand, and the base passes through rag bolt to be fixed in relevant position. In other embodiments, the base and the post may be connected by welding.

In this embodiment, the number of the probes is two, and displacement of the pipe is monitored in one side in the horizontal direction and in the up-down direction, respectively. In other embodiments, the number of the probes may be three, and the probes are disposed on both sides of the horizontal direction of the pipeline.

In this embodiment, the elastic member is a compression spring, and the compression spring is located between the stopper structure and the hole edge of the rear side guide hole. In other embodiments, the elastic member may also be a tension spring, and the tension spring is fixed between the stop structure and the hole edge of the front side guide hole, and at this time, the rear end of the tension spring should be fixedly connected with the front end of the stop rod.

In this embodiment, the stopping structure is two stopping rods. In other embodiments, the stop structure may be disposed on an annular protrusion on the outer peripheral surface of the probe.

In this embodiment, the compression spring is sleeved outside the probe. In other embodiments, the compression spring may be disposed beside the probe instead of being sleeved outside the probe, and at this time, the compression spring is still in blocking fit with the stop lever in the front-back direction.

Claims (10)

1. A simple pipeline displacement early warning device comprises a fixed support, a positioning device and a warning device, wherein the fixed support is arranged beside a pipeline and is provided with a mounting seat;

it is characterized by also comprising:

the probe is assembled on the mounting seat in a guiding and moving mode along the front-back direction, a pipeline contact is arranged at the front end of the probe and is used for being in contact with the side wall of the pipeline along the radial direction of the pipeline so that the probe can move backwards in a straight line under the pushing of the side wall of the pipeline when the pipeline moves towards one side of the probe;

the elastic piece is assembled on the mounting seat and applies jacking force towards the side wall of the pipeline to the probe;

the early warning circuit comprises a power supply, an alarm, a static contact and a moving contact, wherein the moving contact is arranged at the rear end of the probe, and the static contact is fixedly arranged at the rear side of the probe and is arranged opposite to the moving contact in the front-back direction; one electrode of the positive electrode and the negative electrode of the power supply is electrically connected with the moving contact through a cable, and the other electrode of the positive electrode and the negative electrode of the power supply is electrically connected with the static contact through a cable;

the alarm is connected to a cable connected with the electrode;

the moving contact is provided with an alarm position and an initial position in front of the alarm position on a moving stroke of moving back and forth along with the probe, and the moving contact is in contact with the static contact when being at the alarm position so as to conduct the early warning circuit to enable the alarm to give an alarm;

when the moving contact is at an initial position, the pipeline contact is set to be in contact with the side wall of the pipeline, a set safety distance is formed between the initial position and the alarm position in the front-rear direction, and the safety distance is smaller than the maximum displacement of the allowable pipeline displacement.

2. The simple pipe displacement early warning device of claim 1, wherein: the probe is arranged in the installation cavity, the elastic piece is assembled in the installation cavity, the circumferential direction of the probe is provided with a radially extending blocking structure, the blocking structure is located in the installation cavity, and the elastic piece is in pushing fit with the probe in the front and rear directions through the blocking structure.

3. The simple pipe displacement early warning device of claim 2, wherein: the mounting base comprises a guide sleeve and a terminal base, the guide sleeve is provided with the mounting cavity, the terminal base is provided with a first wiring terminal electrically connected with the static contact and a second wiring terminal electrically connected with the moving contact, one of the first wiring terminal and the second wiring terminal is electrically connected with the positive electrode of the power supply, and the other one of the first wiring terminal and the second wiring terminal is electrically connected with the negative electrode of the power supply.

4. The simple pipe displacement early warning device of claim 3, wherein: the probe is fixedly sleeved with a conductive sliding sleeve electrically connected with the moving contact, the conductive sliding sleeve is positioned in the conductive sleeve, a conductive reed is further arranged in the conductive sleeve, the conductive sliding sleeve is in conductive sliding fit with the conductive reed, and the conductive reed is electrically connected with the second wiring terminal so as to realize the electrical connection of the moving contact and the second wiring terminal.

5. The simple pipe displacement early warning device of claim 3, wherein: the probe comprises a probe head, a probe seat, a fixed contact, a first wiring terminal, a second wiring terminal, a fixed contact and a conducting strip, wherein the probe head is arranged on the probe head, the fixed contact is arranged on the probe head, the terminal seat is provided with an L-shaped conducting strip, one end of the conducting strip is fixed in the terminal seat and is electrically connected with the first wiring terminal, the other end of the conducting strip extends backwards and bends downwards to form an overhanging end positioned at the rear side of the probe, the fixed contact is fixed on the overhanging end.

6. The simple pipe displacement early warning device of any one of claims 1 to 4, wherein: the quantity of probe is two, the fixed bolster includes interconnect's stand and crossbeam, and the mount pad of two probes sets up respectively on stand and crossbeam, and two probes contact with corresponding pipeline lateral wall respectively on horizontal direction and upper and lower direction to monitor the displacement of pipeline at horizontal direction and vertical direction respectively.

7. The simple pipe displacement early warning device of claim 6, wherein: the fixed bolster still includes the base, and base threaded connection is at the lower extreme of stand, and the base passes through rag bolt to be fixed in the relevant position.

8. The simple pipe displacement early warning device of claim 6, wherein: the upright post and the cross beam are connected with the corresponding mounting seats through universal joints.

9. The simple pipe displacement early warning device of any one of claims 1 to 4, wherein: scales extending along the front-back direction are arranged on the side wall of the probe.

10. The simple pipe displacement early warning device of any one of claims 1 to 4, wherein: the alarm is an alarm horn.

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