CN110671614A

CN110671614A - Simple leakage detection device for buried gas pressure pipeline

Info

Publication number: CN110671614A
Application number: CN201911092625.4A
Authority: CN
Inventors: 邱宜生; 张景森; 金社伟
Original assignee: Hua Ranneng Gas Works Co Ltd Of Foshan City
Current assignee: Hua Ranneng Gas Works Co Ltd Of Foshan City
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-01-10

Abstract

The invention relates to the technical field of leakage detection of buried gas pressure pipelines, and particularly discloses a simple leakage detection device for a buried gas pressure pipeline, which comprises a hole opening device, a conduction unit, a host and an earphone, wherein the conduction unit comprises a thick-wall stainless steel probe tube, a through hole is integrally formed in the middle of the thick-wall stainless steel probe tube, and a probe cylinder is fixedly screwed at the front end of the thick-wall stainless steel probe tube; the inside of the probe cylinder is spliced with a sound pick-up, a signal output port at the tail end of the sound pick-up is connected with a first signal transmission line, and the first signal transmission line penetrates through a through hole in the thick-wall stainless steel probe tube and then is connected with a signal input port of the host. Compared with the traditional method for finding the leak point by injecting the odorizing agent into the compressed air through olfaction, the leak point detection device is adopted to detect the leak point, is not influenced by external factors in the detection process, has high leak point detection accuracy, does not need to carry out preliminary leak detection preparation work, is time-saving and labor-saving, and effectively guarantees the health of a human body.

Description

Simple leakage detection device for buried gas pressure pipeline

Technical Field

The invention relates to the technical field of leakage detection of buried gas pressure pipelines, in particular to a simple leakage detection device for a buried gas pressure pipeline.

Background

The leakage detection mode of the leakage of the buried pipeline in the current engineering construction process is only to inject odorizing agent into the compressed air in the pipeline, and the leakage point is determined by adopting an artificial olfaction (smelling odor) mode after the odorizing agent diffuses and flows out from the leakage point along with the compressed air. The method is single, the sensitivity of smelling is poor, the sensitivity of olfactory nerves is easy to change due to external factors, and the method has great influence on human health.

Therefore, a simple leakage detection device which is convenient to quickly and accurately find out the position of a leakage point is designed.

Disclosure of Invention

In view of the above-mentioned problems of the background art, the present invention provides a simple leak detection apparatus for a buried gas pressure pipeline.

The invention discloses a simple leakage detection device for a buried gas pressure pipeline, which comprises a hole opening device, a conduction unit, a host and an earphone, wherein the conduction unit comprises a thick-wall stainless steel probe tube, a through hole is integrally formed in the middle of the thick-wall stainless steel probe tube, and a probe cylinder is fixedly screwed at the front end of the thick-wall stainless steel probe tube; the outside of the tail end of the thick-wall stainless steel probe tube is a handle part, the inner side of the probe tube is spliced with a sound pick-up, a sound insulation layer is filled between the outside of the sound pick-up and the inner wall of the probe tube, a gasket is arranged between the tail end of the sound pick-up and the probe tube, the inner side of the front end of the probe tube is screwed with a fixed end head, the middle part of the fixed end head is provided with a through hole, the front end of the sound pick-up is a sound pick-up port, and the position of the sound pick-up port, a signal output port at the tail end of the sound pick-up is connected with a first signal transmission line, the first signal transmission line passes through a through hole in the thick-wall stainless steel detection tube and then is connected with a signal input port of the host, one side of the host is provided with an audio transmission port, a second signal transmission line is inserted in the audio transmission port, one end of the second signal transmission line is connected to a connection port of the earphone, and a volume adjusting knob is further arranged on one side of the host.

The simple leakage detection device for the buried gas pressure pipeline comprises a grab handle, a drill rod is vertically welded in the middle of the grab handle, a spiral scraper knife is welded outside the drill rod, and scales are engraved on the surface of the drill rod at equal distances from top to bottom.

According to the simple leakage detection device for the buried gas pressure pipeline, the inner hexagonal anti-falling bolt is screwed at the position where the inner part of the tail end of the probe cylinder is connected with the thick-wall stainless steel probe pipe, and the inner hexagonal anti-falling bolt can effectively fix the probe cylinder and prevent the probe cylinder from loosening and falling.

The invention relates to a simple leakage detection device for a buried gas pressure pipeline, wherein a host machine is an audio amplifier, an audio amplification circuit board and a battery box are arranged in the audio amplifier, the battery box is electrically connected with the audio amplification circuit and a sound pick-up, a charging port is arranged on the battery box, and the charging port is positioned on the back of the host machine.

The simple leakage detection device for the buried gas pressure pipeline is characterized in that a 52DB type electret capacitor microphone is adopted as the microphone, the sensitivity of the microphone is-48-66 Db, and the response frequency is 20-20 KHZ.

Compared with the prior art, the invention has the following beneficial effects:

the sound wave monitoring device is simple in structure and convenient to operate, sound waves generated by leakage of the underground leakage points are monitored through the sound pickup, so that workers can quickly and accurately find out the positions of the leakage points, and compared with a traditional method that odorizing agents are injected into compressed air to find out the leakage points through olfaction, the leakage points are detected through the sound wave monitoring device, the detection process is not influenced by external factors, the detection accuracy of the leakage points is high, early leakage detection preparation work is not needed, and time and labor are saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the probe cartridge and pickup attachment of the present invention;

FIG. 3 is a schematic diagram of a circuit connection structure of a host according to the present invention;

fig. 4 is a schematic diagram of the electrical components of fig. 3.

In the figure: 1. a tapping device; 101. a handle; 102. a drill stem; 103. a spiral scraper knife; 2. a conductive unit; 201. a thick-walled stainless steel probe tube; 202. a probe cylinder; 203. a handle portion; 204. a through hole; 205. an inner hexagonal anti-drop bolt; 206. a sound insulating layer; 207. a sound pickup; 208. fixing the end head; 209. perforating; 210. a pickup port; 211. a gasket; 3. a host; 31. an audio transmission port; 32. a second signal transmission line; 33. a volume adjusting knob; 4. an earphone; 5. a first signal transmission line.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-4, the simple leakage detection device for the buried gas pressure pipeline of the present invention comprises a hole opening device 1, a conduction unit 2, a host 3 and an earphone 4, wherein the conduction unit 2 comprises a thick-wall stainless steel probe tube 201, a through hole 204 is integrally formed in the middle of the thick-wall stainless steel probe tube 201, and a probe barrel 202 is fixedly screwed at the front end of the thick-wall stainless steel probe tube 201; the external part of the tail end of a thick-wall stainless steel probe tube 201 is a handle part 203, the inner side of a probe tube 202 is spliced with a sound pick-up 207, a sound insulation layer 206 is filled between the external part of the sound pick-up 207 and the inner wall of the probe tube 202, the sound insulation layer 206 is arranged to centralize the direction of sound wave collection of a sound pick-up end 208 of the sound pick-up 207 and improve the definition and effectiveness of sound wave collection, the sound pick-up 207 adopts a 52DB type electret capacitor sound pick-up, the sensitivity of the sound pick-up 207 is-48-66 Db, the response frequency is 20-20KHZ, a gasket 211 is arranged between the tail end of the sound pick-up 207 and the probe tube 202, a fixed end 208 is screwed in the inner side of the front end of the probe tube 202, a through hole 209 is arranged in the middle part of the fixed end 208, the front end of the sound pick-up 207 is a sound pick-up port 210, the position, first signal transmission line 5 passes behind the inside through-hole 204 of thick wall stainless steel detecting tube 201 and is connected with the signal input port of host computer 3, one side of host computer 3 is equipped with audio transmission port 31, it has second signal transmission line 32 to peg graft in the audio transmission port 31, the one end of second signal transmission line 32 is connected on the connection port of earphone 4, one side of host computer 3 still is equipped with volume knob 33, host computer 3 is audio amplifier, built-in audio amplification circuit board and battery case have, the battery case is connected with audio amplification circuit and adapter 207 electricity, be equipped with the port of charging on the battery case, the port of charging is located the host computer 3 back.

The tapping device 1 comprises a grab handle 101, the middle of the grab handle 101 is welded with a drill rod 102 in a vertical mode, the outer welding of the drill rod 102 is welded with a spiral scraper knife 103, the surface of the drill rod 102 is provided with a scale from top to bottom in an equidistant mode, the structural design can facilitate the working personnel to tap holes at preset positions, meanwhile, the working personnel can know the drilling depth constantly, and the underground gas transmission pipeline is prevented from being damaged.

The inside of a probe section of thick bamboo 202 tail end is twisted soon with the position department that thick wall stainless steel detecting tube 201 is connected has hexagon socket head cap anticreep bolt 205, sets up hexagon socket head cap anticreep bolt 205 and can effectively carry out further fixed to a probe section of thick bamboo 202, prevents that a probe section of thick bamboo 202 from appearing not hard up and coming off.

In the use of the invention: the worker drills a detection hole in a soil layer above a gas transmission pipeline in a spiral drilling mode through the hole drilling device 1, (note that the hole drilling depth is determined according to the buried depth of the pipeline, and is smaller than the buried depth of the pipeline to ensure that the pipeline is not damaged), after hole drilling is completed, the thick-wall stainless steel detection pipe 201 of the conduction unit 2 is carried with the probe cylinder 202 and the sound pickup 207 to penetrate into the hole, sound wave signals are collected by the sound pickup 207, the sound wave signals are amplified through the host machine 3, and then the worker can listen to the sound signals through the earphone 4, and what needs to be further explained is that: any leakage of compressed gas is the release of physical energy of the compressed gas itself, so that when the compressed gas in the pipe flows out from the leakage point, the energy release is performed, air in the surrounding soil layer is vibrated to generate audible sound, and the sound wave can be collected by the sound collector 207.

The earphone used in the present invention is the current universal audio playing earphone, and the sound pick-up is a 52DB type electret condenser sound pick-up, which is a common electrical component in the current electronic field, and the circuit and principle thereof are not repeated herein.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a detection device simply reveals for burying ground gas pressure pipeline, includes trompil device (1), conduction unit (2), host computer (3) and earphone (4), its characterized in that: the conduction unit (2) comprises a thick-wall stainless steel detection tube (201), a through hole (204) is integrally formed in the middle of the thick-wall stainless steel detection tube (201), and a probe cylinder (202) is fixedly screwed at the front end of the thick-wall stainless steel detection tube (201); the external part of the tail end of a thick-wall stainless steel probe tube (201) is a handle part (203), the inner side of a probe tube (202) is spliced with a sound pick-up (207), a sound insulation layer (206) is filled between the external part of the sound pick-up (207) and the inner wall of the probe tube (202), a gasket (211) is arranged between the tail end of the sound pick-up (207) and the probe tube (202), a fixed end head (208) is screwed in the inner side of the front end of the probe tube (202), a through hole (209) is formed in the middle of the fixed end head (208), the front end of the sound pick-up (207) is a sound pick-up port (210), the position of the sound pick-up port (210) corresponds to the position of the through hole (209), a signal output port at the tail end of the sound pick-up (207) is connected with a first signal transmission line (5), the first signal transmission line (5) is connected with a signal input port of a, one side of host computer (3) is equipped with audio transmission port (31), and it has second signal transmission line (32) to peg graft in audio transmission port (31), the one end of second signal transmission line (32) is connected on the connection port of earphone (4), one side of host computer (3) still is equipped with volume knob (33).

2. A simple leak detection device for a buried gas pressure pipeline according to claim 1, characterised in that: the tapping device (1) comprises a grab handle (101), a drill rod (102) is welded in the middle of the grab handle (101) in a vertical mode, a spiral scraper knife (103) is welded outside the drill rod (102), and scales are carved on the surface of the drill rod (102) at equal distances from top to bottom.

3. A simple leak detection device for a buried gas pressure pipeline according to claim 1, characterised in that: an inner hexagonal anti-falling bolt (205) is screwed at the position where the inside of the tail end of the probe cylinder (202) is connected with the thick-wall stainless steel probe tube (201).

4. A simple leak detection device for a buried gas pressure pipeline according to claim 1, characterised in that: host computer (3) are audio amplifier, and the built-in audio amplifier circuit board and battery case that have, battery case and audio amplifier circuit and adapter (207) electricity are connected, are equipped with the port that charges on the battery case, and the port that charges is located host computer (3) back.

5. A simple leak detection device for a buried gas pressure pipeline according to claim 1, characterised in that: the sound pick-up (207) adopts a 52DB type electret capacitor sound pick-up, the sensitivity of the sound pick-up (207) is-48-66 Db, and the response frequency is 20-20 KHZ.