CN217109182U

CN217109182U - It reveals monitoring devices to face sea city town gas PE pipeline

Info

Publication number: CN217109182U
Application number: CN202220384487.8U
Authority: CN
Inventors: 江国华; 孙小兵; 吴凯平; 黄明胜; 莫钦彦; 谭达真; 廖元耀; 陆杰
Original assignee: Guangxi Special Equipment Inspection and Research Institute
Current assignee: Guangxi Special Equipment Inspection and Research Institute
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-08-02
Anticipated expiration: 2032-02-24

Abstract

The utility model discloses a near sea city town gas PE pipeline reveals monitoring devices relates to monitoring facilities technical field. The utility model discloses a two speed sensor of installing on the pipeline cross-section, two electric connection has the switch spare between the speed sensor, the switch spare still respectively electric connection have bee calling organ and binding post, the bee calling organ other end with binding post other end electric connection. The utility model discloses an install two speed sensor between waiting to examine the section of pipeline, when there is gas leakage in this section pipeline, the gas velocity of flow of two detection device departments can be different, as long as detect out the velocity of flow difference just can judge that the gas exists the leakage, rethread switch spare starts bee calling organ, the people just can listen out, it is comparatively accurate to make like this to detect, and need not go on through the people, need not so complicated like prior art, whole messenger detection efficiency has obtained the improvement.

Description

It reveals monitoring devices to face sea city town gas PE pipeline

Technical Field

The utility model relates to a monitoring facilities technical field, concretely relates to near sea city town gas PE pipeline reveals monitoring devices.

Background

The plastic pipeline in China develops rapidly and the quality is improved continuously. Plastic pipe industries mainly including polyvinyl chloride pipes, Polyethylene (PE) pipes, and polypropylene (PP-R) pipes have been primarily formed. The Polyethylene (PE) pipe is widely applied to gas transmission and distribution, gas transmission pipes and the like due to the unique advantages of the PE pipe, and the gas has the characteristics of combustibility and explosiveness, so the pipe is frequently required to be detected in an underground gas pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: thereby for solving current detection method because the detection means is complicated and detect inaccurate and cause the problem that detection efficiency is low, the utility model provides a near sea city town gas PE pipeline reveals monitoring devices.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

a device for monitoring leakage of a city town gas PE pipeline facing the sea comprises two speed measuring devices arranged on the cross section of the pipeline, when gas flows along the axial direction of the pipeline at the position of the speed measuring device, the speed measuring device can generate an electric signal, the signal intensity of the electric signal is in direct proportion to the flow velocity of the gas flowing through the speed measuring device, a switch piece is electrically connected between the two speed measuring devices, the two electric signals are transmitted to the switch piece through the electrical connection, when the signal intensity of the two electric signals is different, the switch part can act, the switch part is also respectively and electrically connected with a buzzer and a wiring terminal, the other end of the buzzer is electrically connected with the other end of the wiring terminal, when the switch piece acts and the wiring terminal is connected with a power supply, a closed loop is formed between the switch piece, the wiring terminal and the buzzer.

Further, the speed measuring device comprises a cylinder, a spiral blade is rotatably installed in the cylinder along the axis direction of the cylinder, a direct current motor is installed on the outer wall of the cylinder, a transmission part is connected between the direct current motor and the spiral blade, and when the spiral blade rotates, the direct current motor can be driven to rotate through the transmission part.

Furthermore, the axial direction of the direct current motor is perpendicular to the axial direction of the cylinder, the transmission part comprises a rod body fixed on an output shaft of the direct current motor, and the other end of the rod body penetrates through the cylinder wall of the cylinder and is in transmission connection with a rotating shaft of the spiral blade through a bevel gear component.

Further, the switch includes the mounting panel, install on the mounting panel and be concave iron plate, still perpendicular self direction rotation installs copper's pointer on the mounting panel, the notch of iron plate is just right the axis of rotation of pointer, the one end of pointer is located this notch, electric connection between pointer and the bee calling organ, the iron plate with through wire electric connection between the binding post, the other end of pointer is equipped with the piece that receives that is used for receiving two signals of telecommunication, through receive the piece, when the signal strength of two signals of telecommunication is the same, the pointer can forbid motionless, just lie in on the pointer one end in the iron plate notch is located this notch central point all the time, when there is the difference in the signal strength of two signals of telecommunication, the pointer can rotate.

Furthermore, the receiving part comprises two push rods which are symmetrically distributed on two sides of the end part of the pointer and are hinged to the end part of the pointer, a magnet is fixed to the other end of each push rod, a solenoid is sleeved on the outer side of the magnet, one end, far away from the pointer, of a pipe barrel of the solenoid is hinged to the mounting plate through a support, and wiring terminals of the two solenoids are electrically connected with input ends of the two direct current motors through wires respectively.

Further, the tube barrel of the solenoid is closed at the end, away from the pointer, of the tube barrel, and a spring is fixed between the end and the magnet.

Furthermore, the pointer and the buzzer and the wiring terminal and the buzzer are electrically connected through guiding.

The utility model has the advantages as follows:

1. the utility model discloses an install two speed sensor between waiting to examine the section of pipeline, when there is gas leakage in this section pipeline, the gas velocity of flow of two detection device departments can be different, as long as detect out the velocity of flow difference just can judge that the gas exists the leakage, rethread switch spare starts bee calling organ, the people just can listen out, it is comparatively accurate to make like this to detect, and need not go on through the people, need not so complicated like prior art, whole messenger detection efficiency has obtained the improvement.

Drawings

FIG. 1 is a perspective view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a perspective view of the speed measuring device of the present invention;

fig. 4 is a front view of the speed measuring device of the present invention;

fig. 5 is a sectional view taken along the line a-a of fig. 4 according to the present invention;

FIG. 6 is a perspective view of the switch and the connecting terminal of the present invention;

fig. 7 is a top view of the switch member of the present invention;

fig. 8 is an exploded view of the receiver structure of the present invention;

fig. 9 is a circuit diagram of the dc motor and the solenoid according to the present invention;

reference numerals: 1. a speed measuring device; 101. a cylinder; 102. helical leaves; 103. a direct current motor; 104. a transmission member; 2. a switch member; 201. mounting a plate; 202. an iron block; 203. a pointer; 204. a receiver; 2041. a push rod; 2042. a magnet; 2043. a solenoid; 3. and a terminal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

As shown in FIG. 1, an embodiment of the present invention provides a device for monitoring leakage of PE pipeline in city and town near sea, comprising two speed measurement devices 1 installed on the cross section of the pipeline, wherein when gas flows along the axial direction of the pipeline in the speed measurement devices 1, the speed measurement devices themselves generate electric signals, the signal intensity of the electric signals is proportional to the flow rate of the gas flowing through the speed measurement devices themselves, a switch member 2 is electrically connected between the two speed measurement devices 1, the two electric signals are transmitted to the switch member 2 through the electric connection, when the signal intensities of the two electric signals are different, the switch member 2 acts, the switch member 2 is further electrically connected with a buzzer and a terminal 3, the other end of the buzzer is electrically connected with the other end of the terminal 3, when the switch member 2 acts and the terminal 3 is connected with a power supply, a closed loop is formed between the switch member 2, the terminal 3 and the buzzer, when the device is used, the two speed measuring devices 1 are arranged at the cross sections at two ends of a pipeline to be measured, the connecting terminal 3 is connected with an external power supply, it needs to be described that the pipeline to be measured has no branch, namely the whole pipeline, the gas in the same pipeline has the same flow direction and the same flow speed, the walking direction of the gas in the pipeline is taken as the downstream direction of the pipeline, otherwise, the walking direction is taken as the upstream direction, when a leak exists in the pipeline, namely when the gas leaks, a part of the gas flows away, the amount of the gas flowing to the speed measuring device 1 at the downstream position is smaller, the gas pressure is reduced, the flow speed is different, the signal intensity of the generated two electric signals is different, the switch element 2 acts, when the switch element 2 acts, namely, the buzzer responds when being in a loop, people can know that the pipeline has leakage, the device enables the detection accuracy rate to be improved greatly compared with the original method, the operation is not needed, and the detection efficiency is improved on the whole.

As shown in fig. 3, in some embodiments, the speed measuring device 1 includes a cylinder 101, a spiral blade 102 is rotatably installed in the cylinder 101 along its axis direction, a dc motor 103 is installed on an outer wall of the cylinder 101, a transmission member 104 is connected between the dc motor 103 and the spiral blade 102, the dc motor 103 is driven to rotate when the spiral blade 102 rotates through the transmission member 104, the cylinder 101 is made of steel, the diameter of the cylinder 101 is the same as that of a pipe, when the cylinder is installed, because the pipe is a PE pipe, the end of the cylinder 101 and the end of the pipe are directly hot-melted together when the pipe is installed, so as to ensure that the hot-melted position is in place, no air leakage occurs at the hot-melted position, when air flows through the spiral blade 102, the spiral blade 102 is driven to rotate, thereby driving the dc motor 103 to rotate, where the dc motor 103 is a small micro motor, and when the motor is driven to rotate, it itself acts as a generator, and can emit a small dc power, the power can be generated as long as the spiral blade 102 rotates, the voltage of the power can be determined by the rotating speed, and the detection accuracy is guaranteed.

In some embodiments, as shown in fig. 3-5, the axial direction of the dc motor 103 is perpendicular to the axial direction of the cylinder 101, and the transmission member 104 includes a rod fixed to the output shaft of the dc motor 103, and the other end of the rod passes through the wall of the cylinder 101 and is in transmission connection with the rotating shaft of the spiral blade 102 through a bevel gear assembly, where the rod is in close contact with the wall of the cylinder 101 without causing air leakage.

As shown in fig. 6 and 7, in some embodiments, the switch element 2 includes a mounting plate 201, a concave iron block 202 is mounted on the mounting plate 201, a copper pointer 203 is also rotatably mounted on the mounting plate 201 perpendicularly to the self direction, a recess of the iron block 202 faces a rotation axis of the pointer 203, one end of the pointer 203 is located in the recess, the pointer 203 is electrically connected with the buzzer, the iron block 202 is electrically connected with the connection terminal 3 through a wire, the other end of the pointer 203 is provided with a receiving part 204 for receiving two electrical signals, through the receiving part 204, when the signal strengths of the two electrical signals are the same, the pointer 203 is prohibited from moving, and one end of the pointer 203 located in the recess of the iron block 202 is always located at the center of the recess, when there is a difference between the signal strengths of the two electrical signals, the pointer 203 rotates, the mounting plate 201 is made of a hard insulator, the mounting plate 201 must be kept horizontal when being placed or mounted, the pointer 203 can not swing under the natural state because of self gravity, the end part of the pointer 203 is positioned in the middle of the notch of the iron block 202 under the natural state, namely, the pointer is not in contact with the iron block 202, when the intensity of two electric signals received by the receiver 204 is different, the pointer 203 rotates, the end part of the pointer can be in contact with the iron block 202, because the iron block 202 is electrically connected with the wiring terminal 3 and the pointer 203 is electrically connected with the buzzer, the buzzer is connected with the wiring terminal 3, when a power supply is connected between the wiring terminal 3, the whole pointer forms a loop, the buzzer can respond, and the condition that people leak at the first time is convenient to make.

As shown in fig. 1, 6, 8 and 9, in some embodiments, the receiving element 204 includes two push rods 2041 symmetrically distributed on both sides of the end of the pointer 203 and hinged to the end of the pointer, a magnet 2042 is fixed to the other end of the push rod 2041, a solenoid 2043 is sleeved outside the magnet 2042, a tube of the solenoid 2043 is hinged to the mounting plate 201 through a bracket at an end away from the pointer 203, terminals of the two solenoids 2043 are electrically connected to input ends of the two dc motors 103 respectively through wires, the solenoid 2043 is equivalent to an electromagnet 2042 when being energized, generates an interaction force with the permanent magnet 2042 inside itself, and generates a relative motion, so that the permanent magnet 2042 pushes out the push rod 2041 to act on the pointer 203, the thrust magnitude is proportional to the magnitude of the current flowing through the solenoid 2043 itself as long as the permanent magnet 2042 is correctly installed according to the magnetic pole of the permanent magnet 2042, namely, the voltage provided by the dc motor 103 is related to, because of the symmetric relationship, as long as the thrust of the push rods 2041 on both sides of the pointer 203 is the same, the pointer 203 will not rotate, that is, the voltage provided by the two dc motors 103 is the same, the pointer 203 will remain stationary, that is, according to the gas flow rate, when the voltage provided by the two dc motors 103 is different, the thrust of the two push rods 2041 will be different, the force on both sides will be different, which is equivalent to the force pushing the pointer 203 toward one side, the pointer 203 will be pushed, so that the effect of accurate detection is achieved, and here, because the end of the pointer 203 performs arc motion, both ends of the whole body formed by the solenoid 2043 and the push rods 2041 must be in a hinged relationship.

As shown in fig. 6-8, in some embodiments, the solenoid 2043 has a tube with a closed end away from the pointer 203, and a spring is fixed between the closed end and the magnet 2042, so as to avoid detection errors caused by over-accuracy, because the gas flow rate in the pipe is not necessarily the same under normal conditions, i.e. the pipe does not leak, but the gas flow rate in the pipe is relatively large under normal conditions when leakage occurs, namely: the normal flow rate makes the buzzer alarm, so the design makes the end of the pointer 203 receive a smaller contact force under normal condition, the force can be against the thrust difference of the push rod 2041 caused by the normal intensity difference of the two electric signals, the circuit conduction caused by the motion of the pointer 203 is avoided, the buzzer alarm is made, the elasticity of the two springs is very small, and the influence of the thrust difference of the two push rods 2041 caused by the normal flow rate difference can not be caused.

As shown in fig. 6 and 7, in some embodiments, the pointer 203 and the buzzer and the connection terminal 3 and the buzzer are electrically connected through a guide, so that the buzzer is in a free state, because the speed measuring device 1 is installed underground along with a pipeline, i.e. buried in the soil as a whole, the buzzer must be installed on the ground in order to ensure the alarm effect, as long as the electrical connection is ensured through a wire, the switch 2 can be installed on the ground, and also can be installed on the ground, in order to protect the components on the switch 2, when installed underground, an accommodating cavity needs to be installed underground, the protection components are not damaged by the soil, so that the components can normally operate, and the connection terminal 3 is conveniently arranged on the mounting plate 201.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a face sea city town gas PE pipeline and reveal monitoring devices, its characterized in that includes two speed sensor (1) of installing on the pipeline cross-section, when speed sensor (1) self has gaseous along the pipeline axis direction to flow the time self can produce the signal of telecommunication, the signal intensity of this signal of telecommunication is directly proportional with the velocity of flow of the gaseous flow that flows through self department, two electric connection has switch spare (2) between speed sensor (1), through this electric connection in order to pass two signal of telecommunication to switch spare (2), when the signal intensity of two signal of telecommunication has the difference, switch spare (2) can move, switch spare (2) still electric connection has bee calling organ and binding post (3) respectively, the bee calling organ other end and binding post (3) other end electric connection, when switch spare (2) moves and binding post (3) connect the power, and a closed loop is formed among the switch piece (2), the wiring terminal (3) and the buzzer.

2. The device for monitoring leakage of the temporary urban gas PE pipeline in the sea according to claim 1, wherein the speed measuring device (1) comprises a cylinder (101), a spiral blade (102) is rotatably installed in the cylinder (101) along the axis direction of the cylinder, a direct current motor (103) is installed on the outer wall of the cylinder (101), a transmission member (104) is connected between the direct current motor (103) and the spiral blade (102), and the transmission member (104) drives the direct current motor (103) to rotate when the spiral blade (102) rotates.

3. The device for monitoring leakage of PE pipelines in town gas near sea according to claim 2, characterized in that the axial direction of the DC motor (103) is perpendicular to the axial direction of the cylinder (101), and the transmission member (104) comprises a rod fixed on the output shaft of the DC motor (103), and the other end of the rod penetrates through the wall of the cylinder (101) and is in transmission connection with the rotating shaft of the spiral blade (102) through a bevel gear assembly.

4. The device for monitoring the leakage of the PE pipeline in the town gas near the sea according to claim 1, wherein the switch member (2) comprises a mounting plate (201), the mounting plate (201) is provided with a concave iron block (202), the mounting plate (201) is also provided with a copper pointer (203) in a rotating way perpendicular to the installation direction, a notch of the iron block (202) is opposite to a rotating shaft of the pointer (203), one end of the pointer (203) is positioned in the notch, the pointer (203) is electrically connected with the buzzer, the iron block (202) is electrically connected with the connecting terminal (3) through a wire, the other end of the pointer (203) is provided with a receiving member (204) for receiving two electrical signals, and the pointer (203) is prohibited from moving when the signal strength of the two electrical signals is the same through the receiving member (204), and one end of the pointer (203) positioned in the notch of the iron block (202) is always positioned at the center of the notch, and when the signal intensity of two electric signals is different, the pointer (203) can rotate.

5. The device for monitoring leakage of PE pipeline in town gas near sea according to claim 4, wherein said receiving element (204) comprises two push rods (2041) symmetrically distributed on both sides of the end of said pointer (203) and hinged to the end of the pointer, a magnet (2042) is fixed to the other end of said push rod (2041), a solenoid (2043) is sleeved outside said magnet (2042), one end of the tube of said solenoid (2043) far from said pointer (203) is hinged to said mounting plate (201) through a bracket, and the terminals of said two solenoids (2043) are electrically connected to the input terminals of said two DC motors (103) through wires.

6. The device for monitoring the leakage of the town gas PE pipe in the sea according to claim 5, wherein the solenoid (2043) has a pipe barrel closed at an end away from the pointer (203), and a spring is fixed between the end and the magnet (2042).

7. The device for monitoring the leakage of the gas PE pipeline in the coastal city and town according to claim 4, characterized in that the pointer (203) and the buzzer and the connection terminal (3) and the buzzer are electrically connected through a guide.