CN214011101U - Gas-liquid state sensor circuit and sensor thereof - Google Patents
Gas-liquid state sensor circuit and sensor thereof Download PDFInfo
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- CN214011101U CN214011101U CN202121521884.7U CN202121521884U CN214011101U CN 214011101 U CN214011101 U CN 214011101U CN 202121521884 U CN202121521884 U CN 202121521884U CN 214011101 U CN214011101 U CN 214011101U
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Abstract
The utility model provides a gas-liquid state sensor circuit and sensor thereof, including survey water probe and MCU, MCU and multivibrator intercommunication are equipped with triode Q6 and triode Q8 between MCU and the multivibrator, and output pin series resistance R28 of multivibrator, and resistance R28 one end is connected with surveys the water probe, and resistance R28 and survey water probe form a bleeder circuit, are equipped with between survey water probe and the resistance R28 and are equipped with electric capacity C25, and electric capacity C25 is for blocking direct current electric capacity, strains the direct current composition in the output waveform. The utility model discloses circuit and sensor can directly use DC power supply, avoid the electrolytic reaction between electrode probe to lead to corroding the scale deposit inefficacy simultaneously, and the circuit is sealed in the sensor moreover, can carry out work in high-pressure environment, and stable in structure is reliable, long service life, small in size and with low costs.
Description
Technical Field
The utility model belongs to gas-liquid state sensor field especially relates to the medium nature to water and gas in the conduit judges and signal output circuit.
Background
The accumulated gas at the local high point and the bending point of the pipeline has important influence on the pipeline transmission. An inlet and outlet exhaust valve and a corresponding monitoring sensor system are generally designed on a pipeline. Since the main sources of gas accumulated in the water delivery system are the accumulation of sucked air and gas overflowing from liquid at local high points and bending points of the pipeline, the direct detection of the properties of the gas-liquid medium at the nodes in the pipeline is an important method for obtaining the effect of the exhaust valve and the running state of the water pipe.
Among the prior art, there are many kinds to the sensor that gas-liquid medium nature detected in the pipeline, but all respectively have characteristics, and ultrasonic sensor, little tuning fork sensor and capacitive sensor are bulky with high costs, and photoelectric sensor receives liquid light transmissivity to influence great, and when especially measuring water, the water light transmissivity difference of different quality of water is too big, and relatively poor water source can lead to sensor sensitivity to reduce, cost increase. The electrode sensor with lower cost has high sensitivity and is slightly influenced by water quality, but when the electrode sensor uses direct current, water is generated for electrolytic reaction, so that the electrode is corroded and scaled to lose efficacy in a short time, and alternating current is used, which causes great inconvenience and limited application to a direct current power supply which is usually used for pipeline monitoring.
Disclosure of Invention
The utility model discloses it all has separately drawback to store up gaseous detection among the prior art multiclass sensor to liquid conveying pipeline, especially electrode sensor when using the direct current, can produce the electrolytic reaction of water, leads to the technical problem that electrode short time corrodes the scale deposit and became invalid, the utility model provides a gas-liquid state sensor circuit produces the low pressure and exchanges on electrode probe, avoids the electrolysis to lead to the electrode to become invalid to output high or low level signal gives terminal equipment, is used for reporting an emergency and asks for help or increased vigilance system control.
The utility model provides a gas-liquid state sensor circuit, including MCU, MCU and multivibrator intercommunication are equipped with triode Q6 and triode Q8 between MCU and the multivibrator, output pin series resistance R28 of multivibrator, the one end that multivibrator was kept away from to resistance R28 is connected with the probe that surveys water, resistance R28 and probe that surveys water form a bleeder circuit, be equipped with electric capacity C25 between probe and the resistance R28 that surveys water, electric capacity C25 is blocking direct current electric capacity, strain the direct current composition in the output waveform.
In the utility model, the multivibrator comprises an ICM7555 and a time-base circuit formed by the ICM7555, the output of the multivibrator is square wave, the waveform duty ratio is 1:1, and the output frequency is 6.02 KHz; the two sides of the capacitor C25 are respectively connected with a capacitor C44 and a capacitor C58, and the capacitor C44 is communicated with the capacitor C58 and then sequentially connected with the triode Q6 and the triode Q8.
The utility model discloses in, parallelly connected being equipped with electric capacity C26 and electric capacity C41 between triode Q6 and triode Q8.
The utility model discloses in, triode Q6 and triode Q8 all have pin 1, pin 2 and pin3, pin3 all grounds, are equipped with diode D28 between pin 1 and the pin3 of leading out of triode Q6, and the pin 2 of leading out of triode Q6 establishes ties in proper order has resistance R29 and resistance R32, and the pin 2 and the pin3 of leading out of triode Q6 communicate with one of them side of electric capacity C26 and electric capacity C41 respectively.
The utility model discloses in, triode Q8's pin3 and diode D28 are connected, and triode Q8's pin 2 establishes ties has resistance R33, and triode Q8's pin 1 and pin3 communicate with one of them side of electric capacity C26 and electric capacity C41 respectively.
The utility model discloses in, electric connection has ESD diode D15 between water detection probe and electric capacity C25.
The utility model also provides an use the utility model discloses gas-liquid state sensor of gas-liquid state sensor circuit, gas-liquid state sensor circuit front end is equipped with insulating end cap, is equipped with the water logging probe in the insulating end cap, and the gas-liquid state sensor circuit outside is equipped with the casing, and the casing afterbody is equipped with cable sealing mechanism, and cable conductor is passed at cable sealing mechanism middle part.
In the utility model, two or one water measuring probe is provided; when one water measuring probe is arranged, the other test line is connected with the sensor shell.
The utility model discloses in, cable sealing mechanism includes water joint and back lid, water joint and casing threaded connection, back lid and water joint threaded connection, and back lid middle part is equipped with the cable hole, the downthehole sealing rubber that is equipped with of cable.
The utility model discloses in, the one end that insulating end cap is located casing inside is equipped with O type circle.
The utility model has the advantages that:
the utility model provides a gas-liquid state sensor circuit and sensor can directly use DC power supply, avoid the electrolytic reaction between electrode probe to lead to corroding the scale deposit inefficacy simultaneously, and the circuit is sealed in the sensor moreover, can carry out work in high-pressure environment, and stable in structure is reliable, long service life, small in size and with low costs, can conveniently be applied to all kinds of detection occasions that need carry out gas-liquid medium nature, especially the suitability is stronger in the detection ring border that has higher pipeline pressure.
Drawings
Fig. 1 shows a gas-liquid state sensor circuit according to the present invention.
Fig. 2 is the schematic view of the sectional structure of the gas-liquid state sensor of the present invention.
In FIGS. 1-2: the sensor comprises a shell 1, a cable 2, a rubber gasket 3, an O-shaped ring 4, an insulating plug 5, a water measuring probe 6, a waterproof connector 7 and a gas-liquid state sensor circuit 8.
Detailed Description
The following description of the present invention will be made in further detail with reference to the accompanying fig. 1-2 and examples, but the method of the present invention is not limited to the following examples.
In the present invention, for convenience of description, the description of the relative position relationship of the components in the present invention is described according to the layout pattern of fig. 1, for example: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1.
Example 1: gas-liquid state sensor circuit
As shown in the attached drawing 1 of the specification, the utility model provides a gas-liquid state sensor circuit, including MCU, MCU and multivibrator intercommunication are equipped with triode Q6 and triode Q8 between MCU and the multivibrator, and output pin series resistance R28 of multivibrator, and the one end that the multivibrator was kept away from to resistance R28 is connected with the water detection probe, and resistance R28 and water detection probe form a bleeder circuit; a capacitor C25 is arranged between the water measuring probe and the resistor R28, and a capacitor C25 is a blocking capacitor and filters out direct current components in an output waveform.
In the utility model, the multivibrator comprises a time base circuit formed by a chip ICM7555 and an ICM7555 thereof, the output of the multivibrator is square wave, the waveform duty ratio is 1:1, and the output frequency is 6.02 KHz; the two sides of the capacitor C25 are respectively connected with a capacitor C44 and a capacitor C58, the capacitor C44 is an NC capacitor, and the capacitor C44 and the capacitor C58 are communicated and then sequentially connected with the triode Q6 and the triode Q8.
The utility model discloses in, parallelly connected being equipped with electric capacity C26 and electric capacity C41 between triode Q6 and triode Q8.
The utility model discloses in, triode Q6 and triode Q8 all have pin 1, pin 2 and pin3, pin3 all grounds, are equipped with diode D28 between pin 1 and the pin3 of leading out of triode Q6, and the pin 2 of leading out of triode Q6 establishes ties in proper order has resistance R29 and resistance R32, and the pin 2 and the pin3 of leading out of triode Q6 communicate with one of them side of electric capacity C26 and electric capacity C41 respectively.
The utility model discloses in, triode Q8's pin3 and diode D28 are connected, and triode Q8's pin 2 establishes ties has resistance R33, and triode Q8's pin 1 and pin3 communicate with one of them side of electric capacity C26 and electric capacity C41 respectively.
The utility model discloses in, electric connection has ESD diode D15 between water detection probe and electric capacity C25.
More specifically, the utility model discloses in use the model and the size and the relation of connection that electronic components such as electric capacity, resistance, diode are shown in description attached figure 1.
The utility model discloses gas-liquid state sensor circuit principle:
the utility model discloses the purpose is whether there is the air in the test conduit with the cooperation of gas-liquid state sensor circuit 8 and survey water probe 6 to it is water or air with the state signal transmission of difference in the pipeline to carry out corresponding processing for the outside.
The gas-liquid state sensor circuit 8 adopts a time-base circuit formed by ICM7555 to form a multivibrator, the output is square wave, the waveform duty ratio is 1:1, and the output frequency of the multivibrator is 6.02 KHz.
The PIN3 output PIN of ICM7555, a resistor R28 in series, the resistor R28 and the water probe 6 connected to J11 form a voltage divider circuit. The capacitor C25 is a blocking capacitor, which filters out DC component in output waveform, ensures the voltage at two ends of the probe is AC, and prevents the probe from generating electrolytic reaction to influence the performance of the probe.
When the pipeline is air, the water detection probe 6 is equivalent to an infinite resistor, the voltage obtained in the voltage division circuit is the highest, so that the triode Q6 is switched on, the triode Q8 is switched off, and a high level is provided for the MCU.
When water is in the pipeline, the water detection probe 6 is equivalent to a resistor of thousands of ohms, the divided voltage in the voltage division circuit is small, so that the triode Q6 is cut off, the triode Q8 is conducted, and a low level is provided for the MCU.
Therefore, the MCU can judge whether the pipeline is water or air according to the level given by the test circuit, and the MCU is used for logic judgment or alarm sending of a PLC, an RTU or other terminal equipment.
Example 2: gas-liquid state sensor
As the description attached figure 2 shows, the utility model provides a gas-liquid state sensor has used the utility model discloses gas-liquid state sensor circuit, 8 front ends of gas-liquid state sensor circuit are equipped with insulating end cap 5, are equipped with water measuring probe 6 in the insulating end cap 5, and gas-liquid state sensor circuit outside is equipped with casing 1, and 1 afterbody of casing is equipped with cable sealing mechanism, and cable conductor 2 is passed at cable sealing mechanism middle part.
In the utility model, two or one water measuring probe 6 is provided; when one water measuring probe 6 is arranged, the other test wire is connected with the metal shell 1.
The utility model discloses in, cable sealing mechanism includes water joint 7 and back lid, and water joint 7 and 1 threaded connection of casing, back lid and water joint 7 threaded connection, back lid middle part are equipped with the cable hole, and the downthehole sealing rubber that is equipped with of cable, whole sensor by the whole of water joint 7 screw thread and the encapsulation of stainless steel casing 1 constitution sensor, are applicable to higher pressure-bearing occasion.
The utility model discloses in, the inside one end that insulating end cap 5 is located the casing is equipped with O type circle 4, is equipped with the tang in casing 1, and O type circle 4 card is at the tang in, and tang and O type circle 4 through casing 1 keep sealed and bear water pressure.
As described above, the present invention can be better realized, the above-mentioned embodiments are only right the preferred embodiments of the present invention are described, not right the scope of the present invention is limited, without departing from the design spirit of the present invention, the ordinary skilled in the art will be right the various modifications and improvements made by the technical solution of the present invention all fall into the determined protection scope of the present invention.
Claims (10)
1. A gas-liquid state sensor circuit comprises an MCU (microprogrammed control Unit), and is characterized in that the MCU is communicated with a multivibrator, a triode Q6 and a triode Q8 are arranged between the MCU and the multivibrator, an output pin of the multivibrator is connected with a resistor R28 in series, one end, far away from the multivibrator, of the resistor R28 is connected with a water detection probe, and the resistor R28 and the water detection probe form a voltage division circuit; a capacitor C25 is arranged between the water measuring probe and the resistor R28, and a capacitor C25 is a blocking capacitor and filters out direct current components in an output waveform.
2. A gas and liquid sensor circuit as in claim 1 wherein the multivibrator includes ICM7555 and its time base circuit of ICM7555, the multivibrator output is square wave, the duty cycle of the waveform is 1:1, the output frequency is 6.02 KHz; the two sides of the capacitor C25 are respectively connected with a capacitor C44 and a capacitor C58, and the capacitor C44 is communicated with the capacitor C58 and then sequentially connected with the triode Q6 and the triode Q8.
3. The gas-liquid state sensor circuit as claimed in claim 1, wherein a capacitor C26 and a capacitor C41 are connected in parallel between the transistor Q6 and the transistor Q8.
4. The gas-liquid state sensor circuit according to claim 1, wherein the triode Q6 and the triode Q8 are respectively provided with a pin 1, a pin 2 and a pin3, the pin3 is all grounded, a diode D28 is arranged between the pin 1 and the pin3 of the triode Q6, the pin 2 of the triode Q6 is sequentially connected in series with a resistor R29 and a resistor R32, and the pin 2 and the pin3 of the triode Q6 are respectively communicated with one side of a capacitor C26 and one side of a capacitor C41.
5. The gas-liquid state sensor circuit according to claim 4, wherein the pin3 of the transistor Q8 is connected with the diode D28, the pin 2 of the transistor Q8 is connected with the resistor R33 in series, and the pin 1 and the pin3 of the transistor Q8 are respectively communicated with one side of the capacitor C26 and the capacitor C41.
6. A gas and liquid condition sensor circuit as recited in claim 1, wherein an ESD diode is electrically connected between said water sensing probe and capacitor C25.
7. A gas-liquid state sensor is characterized in that a gas-liquid state sensor circuit according to any one of claims 1 to 6 is arranged in the gas-liquid state sensor, an insulating plug is arranged at the front end of the gas-liquid state sensor circuit, a water measuring probe is arranged in the insulating plug, a shell is arranged outside the gas-liquid state sensor circuit, a cable sealing mechanism is arranged at the tail of the shell, and a cable penetrates through the middle of the cable sealing mechanism.
8. A gas-liquid state sensor according to claim 7, wherein the water-measuring probe has two or one.
9. The gas-liquid state sensor according to claim 7, wherein the cable sealing mechanism includes a waterproof joint and a rear cover, the waterproof joint is in threaded connection with the housing, the rear cover is in threaded connection with the waterproof joint, a cable hole is formed in the middle of the rear cover, and sealing rubber is arranged in the cable hole.
10. A gas and liquid state sensor as claimed in claim 7, wherein an O-ring is provided at an end of the insulating plug located inside the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121521884.7U CN214011101U (en) | 2021-07-06 | 2021-07-06 | Gas-liquid state sensor circuit and sensor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121521884.7U CN214011101U (en) | 2021-07-06 | 2021-07-06 | Gas-liquid state sensor circuit and sensor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214011101U true CN214011101U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121521884.7U Active CN214011101U (en) | 2021-07-06 | 2021-07-06 | Gas-liquid state sensor circuit and sensor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214011101U (en) |
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2021
- 2021-07-06 CN CN202121521884.7U patent/CN214011101U/en active Active
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