CN202748200U - Multi-purpose leakage detector - Google Patents
Multi-purpose leakage detector Download PDFInfo
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- CN202748200U CN202748200U CN 201220313099 CN201220313099U CN202748200U CN 202748200 U CN202748200 U CN 202748200U CN 201220313099 CN201220313099 CN 201220313099 CN 201220313099 U CN201220313099 U CN 201220313099U CN 202748200 U CN202748200 U CN 202748200U
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- amplifying circuit
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Abstract
The utility model discloses a multi-purpose leakage detector comprising an acoustic-electric transduction device, a front direct coupled amplification circuit, a noise attenuation circuit, a rear bipolar amplification circuit and an audio frequency output device, wherein the a signal output end of the acoustic-electric transduction device is connected with the signal input end of the front direct coupled amplification circuit; the signal output end of the front direct coupled amplification circuit is connected with the input end of the noise attenuation circuit; the signal output end of the noise attenuation circuit is connected with the signal input end of the rear bipolar amplification circuit; and the signal output end of the rear bipolar amplification circuit is connected with the signal input end of the audio frequency output device. The multi-purpose leakage detector has the advantages of being simple in structure, being convenient for processing, being able to detect various leakage situations, even the minimal leakage, being able to detect a bicycle tyre, an automobile tyre, a gas tank and natural gas, especially detect the natural gas and the gas, and being able to eliminate the safety hidden trouble.
Description
Technical field
The utility model relates to a kind of leak detector, relates in particular to a kind of multiplex leak detector that can be used for various gas storage equipment.
Background technology
We will check whether the equipment of the phenomenons that can leak air such as bicycle tyre, doughnut, gas tank or rock gas leaks gas, usually we can adopt it is removed to steep to observe in water whether Bubble formation is arranged for pneumatic tyre, pretty troublesome often, yet, whether the coal gas of family or rock gas leak gas then is difficult for being discovered, and causes danger easily.
Summary of the invention
The purpose of this utility model provides a kind of multiplex leak detector that can be used for various gas storage equipment with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises the acoustic-electric transducing head, preposition straight coupling amplifying circuit, the sound attenuation circuit, rearmounted bipolar amplifying circuit and audio output device, the signal output part of described acoustic-electric transducing head is connected with the signal input part of described preposition straight coupling amplifying circuit, the signal output part of described preposition straight coupling amplifying circuit is connected with the input end of described sound attenuation circuit, the signal output part of described sound attenuation circuit is connected with the signal input part of the bipolar amplifying circuit of described postposition, and the signal output part of the bipolar amplifying circuit of described postposition is connected with the signal input part of described audio output device.
Acoustic-electric transducing head described in the utility model comprises magnet steel, brass ingot, piezoelectric patches and cable, and described piezoelectric patches places between described magnet steel and the described brass ingot, and the other end of described brass ingot and the heart yearn of described cable are welded to connect; Connect with adhering with epoxy resin between described magnet steel, described brass ingot and the described piezoelectric patches; Described acoustic-electric transducing head also comprises brass overcoat and brass bonnet, and the screen layer of described brass bonnet and described cable is welded to connect, and described brass ingot places in the described brass overcoat, and described brass overcoat and described brass bonnet are tightly connected.
The beneficial effects of the utility model are:
The utility model is simple in structure, easy to process, can be used for detecting multiple gas leakage situation, even small gas leakage can detect also, can detect bicycle tyre, doughnut, gas tank, rock gas etc., particularly to the detection of rock gas, coal gas, more can eliminate safe hidden trouble.
Description of drawings
Fig. 1 is one-piece construction block diagram of the present utility model;
Fig. 2 is that structural representation cuts open in the office of acoustic-electric transducing head in the utility model.
Among the figure, 1 magnet steel, 2 piezoelectric patches, 3 brass ingots, 4 brass overcoats, 5 brass bonnets, 6 cables, 7 heart yearns, 8 screen layers.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1: the utility model comprises the acoustic-electric transducing head, preposition straight coupling amplifying circuit, the sound attenuation circuit, rearmounted bipolar amplifying circuit and audio output device, the signal output part of described acoustic-electric transducing head is connected with the signal input part of described preposition straight coupling amplifying circuit, the signal output part of described preposition straight coupling amplifying circuit is connected with the input end of described sound attenuation circuit, the signal output part of described sound attenuation circuit is connected with the signal input part of the bipolar amplifying circuit of described postposition, and the signal output part of the bipolar amplifying circuit of described postposition is connected with the signal input part of described audio output device.
As shown in Figure 2: acoustic-electric transducing head described in the utility model comprises magnet steel 1, brass ingot 3, piezoelectric patches 2 and cable 6, and piezoelectric patches 2 places between magnet steel 1 and the brass ingot 3, and the heart yearn 7 of the other end of brass ingot 3 and cable 6 is welded to connect; Connect with adhering with epoxy resin between magnet steel 1, brass ingot 3 and the piezoelectric patches 2; Described acoustic-electric transducing head also comprises brass overcoat 4 and brass bonnet 5, and brass bonnet 5 is welded to connect with the screen layer 8 of cable 6, and brass ingot 3 places in the brass overcoat 4, and brass overcoat 4 is tightly connected with brass bonnet 5.
In Fig. 1, the effect of acoustic-electric transducing head is similar to the crystal pickup of jukebox.Pass to the gas leakage sound on the pickup, excited acoustic-electrical transducer to produce output voltage.Because the singularity of its structure, its output impedance is very high, and changes with frequency.Employing is carried out impedance transformation by the field effect transistor amplifier that 3DJ6 forms, and the amplifier input impedance that is comprised of 3DJ6 is greater than 500 kilo-ohms, and the impedance of output is lower, and does not change with frequency, so signal almost can can't harm the lost territory and be added on the triode; Form two pipe direct-coupling amplifying circuits by two triodes, can reach to faint signal 1000 times amplification, signal after the amplification is by the decay of potentiometer, sending into two other triode amplifies again, at this time the frequency of gas leakage sound has just been passed through 100,000 times amplification, played back by earphone, we just can hear gas leakage sound.
The size of the mesopore of brass bonnet 5 is decided according to used cable among Fig. 2, after part processes, first the screen layer 8 of cable and brass bonnet 5 are in the same place with tin welding in inside, again magnet steel 1, piezoelectric patches 2 and brass ingot 3 usefulness adhering with epoxy resin are in the same place, wait curing after, the heart yearn of cable is welded on the brass ingot 3, get on brass overcoat 4 and brass bonnet 5 are all bonding again, the thickness of piezoelectric patches 2 is 0.2mm, and diameter is 5mm, in the glue-line bubble can not be arranged when bonding.
Claims (4)
1. multiplex leak detector, it is characterized in that: comprise the acoustic-electric transducing head, preposition straight coupling amplifying circuit, the sound attenuation circuit, rearmounted bipolar amplifying circuit and audio output device, the signal output part of described acoustic-electric transducing head is connected with the signal input part of described preposition straight coupling amplifying circuit, the signal output part of described preposition straight coupling amplifying circuit is connected with the input end of described sound attenuation circuit, the signal output part of described sound attenuation circuit is connected with the signal input part of the bipolar amplifying circuit of described postposition, and the signal output part of the bipolar amplifying circuit of described postposition is connected with the signal input part of described audio output device.
2. a kind of multiplex leak detector according to claim 1, it is characterized in that: described acoustic-electric transducing head comprises magnet steel, brass ingot, piezoelectric patches and cable, described piezoelectric patches places between described magnet steel and the described brass ingot, and the other end of described brass ingot and the heart yearn of described cable are welded to connect.
3. a kind of multiplex leak detector according to claim 2 is characterized in that: connect with adhering with epoxy resin between described magnet steel, described brass ingot and the described piezoelectric patches.
4. a kind of multiplex leak detector according to claim 2, it is characterized in that: described acoustic-electric transducing head also comprises brass overcoat and brass bonnet, the screen layer of described brass bonnet and described cable is welded to connect, described brass ingot places in the described brass overcoat, and described brass overcoat and described brass bonnet are tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220313099 CN202748200U (en) | 2012-07-02 | 2012-07-02 | Multi-purpose leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220313099 CN202748200U (en) | 2012-07-02 | 2012-07-02 | Multi-purpose leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748200U true CN202748200U (en) | 2013-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220313099 Expired - Fee Related CN202748200U (en) | 2012-07-02 | 2012-07-02 | Multi-purpose leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202748200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115023354A (en) * | 2020-01-21 | 2022-09-06 | 亚德克 | Method for identifying a pressure sensor and device for carrying out said method |
-
2012
- 2012-07-02 CN CN 201220313099 patent/CN202748200U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115023354A (en) * | 2020-01-21 | 2022-09-06 | 亚德克 | Method for identifying a pressure sensor and device for carrying out said method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20130702 |