CN209946050U - Crude oil water content tester for distillation method - Google Patents
Crude oil water content tester for distillation method Download PDFInfo
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- CN209946050U CN209946050U CN201920718248.XU CN201920718248U CN209946050U CN 209946050 U CN209946050 U CN 209946050U CN 201920718248 U CN201920718248 U CN 201920718248U CN 209946050 U CN209946050 U CN 209946050U
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Abstract
The utility model belongs to the technical field of the crude oil moisture content survey, especially, relate to a crude oil moisture content apparatus for distillation method. The crude oil water content tester has compact structure and convenient use. A crude oil water content tester for a distillation method comprises a centralized management module, a plurality of distributed crude oil water content testing modules and a wireless monitoring module, wherein the centralized management module and the plurality of distributed crude oil water content testing modules establish a communication connection relationship through an RS485 communication unit; the centralized management module and the wireless monitoring module establish a communication connection relationship through a ZigBee communication unit; the distributed crude oil water content measuring module further comprises a double-isolation direct-current power supply module, a micro control unit, a distillation water vapor temperature isolation detection module, a heating furnace temperature isolation detection module, a stirrer isolation control module and an alternating-current power regulation isolation heating module.
Description
Technical Field
The utility model belongs to the technical field of the crude oil moisture content survey, especially, relate to a crude oil moisture content apparatus for distillation method.
Background
During crude oil water determination, distillation methods compare to other methods such as: karl fischer, density, ray, capacitance, microwave absorption, microwave cavity perturbation, etc., which have higher accuracy and can meet the requirements of non-real-time measurement. However, the inventor finds that the existing crude oil water content tester for the distillation method has a plurality of defects: for example, when measuring the water content of crude oil in a plurality of samples, the poor phenomena such as "bumping" and "sample rushing" are easily caused due to the difference of crude oil samples in each flask; in addition, when a plurality of flasks are heated, a plurality of human-machine interfaces need to be configured with independent parameters, so that the additional hardware cost is increased, and the working efficiency of experimenters is seriously restricted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a crude oil moisture content apparatus for distillation method, this crude oil moisture content apparatus compact structure, convenient to use.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a crude oil water content tester for distillation method comprises:
the system comprises a centralized management module, a plurality of distributed crude oil water content determination modules and a wireless monitoring module; the centralized management module and the plurality of distributed crude oil water content measuring modules establish a communication connection relationship through an RS485 communication unit; the centralized management module and the wireless monitoring module establish a communication connection relationship through a ZigBee communication unit;
the distributed crude oil water content measuring module comprises a double-isolation direct-current power supply module, a micro control unit, a distilled water vapor temperature isolation detection module, a heating furnace temperature isolation detection module, a stirrer isolation control module and an alternating-current power regulation isolation heating module;
the double-isolation direct-current power supply module is respectively connected with a live wire, a zero line and a grounding protection wire of a commercial power and is used for converting 220V alternating current into 3.3V and 5V direct current;
the distillation water vapor temperature isolation detection module consists of a platinum thermal resistor, a temperature measurement chip and a first electromagnetic isolation unit for isolating the platinum thermal resistor and the temperature measurement chip from an electric appliance;
the heating furnace temperature isolation detection module consists of a K-type thermocouple, a thermocouple detection chip and a second electromagnetic isolation unit for isolating the K-type thermocouple and the thermocouple detection chip from an electric appliance;
the stirrer isolation control module consists of a direct current motor, a direct current motor driving unit and a third electromagnetic isolation unit for isolating the direct current motor and the direct current motor driving unit;
the alternating current power regulation isolation heating module is connected with an external heating furnace and used for adjusting a heating mode under the control of the micro control unit to realize heating of the flask.
Further preferably, the chip model of the temperature measuring chip is MAX 31865; the first electromagnetic isolation unit uses a three-positive-one reverse electromagnetic isolation chip with the chip model number ADUM 1401.
Further preferably, the chip model of the thermocouple detection chip is MAX 31855.
Further preferably, the third electromagnetic isolation unit uses three positive-negative electromagnetic isolation chips with a chip model of ADUM 1401.
Further preferably, the alternating-current power regulation isolation heating module comprises an optocoupler with the model number of MOC3063 and a bidirectional thyristor with the model number of BTA 41-600B;
wherein, the 1 st pin of the MOC3063 optical coupler is connected with the micro control unit;
the 4 th pin of the MOC3063 optocoupler is respectively connected with a trigger pin of the bidirectional thyristor and one end interface of the external heating furnace, and the other end interface of the external heating furnace is connected with an N line;
and a 6 th pin of the MOC3063 optocoupler is respectively connected with a first main electrode end of the bidirectional thyristor and the L line.
Optionally, a current-limiting resistor is further arranged between the 1 st pin of the MOC3063 optocoupler and the micro control unit; the current limiting resistor is used for limiting the current of a light emitting diode in the MOC3063 optical coupler to be below 7.5 mA.
Optionally, a first resistor is further connected and arranged between the 4 th pin of the MOC3063 optocoupler and the second main electrode terminal of the triac.
Optionally, a resistor-capacitor absorption circuit formed by a second resistor and a capacitor connected in series is connected between the first main electrode terminal of the triac and the second main electrode terminal of the triac.
Preferably, the centralized management module is further provided with a touch screen module.
The utility model provides a crude oil moisture content tester for a distillation method, which comprises a centralized management module, a plurality of distributed crude oil moisture content testing modules and a wireless monitoring module, wherein a communication connection relation is established between the centralized management module and the plurality of distributed crude oil moisture content testing modules through an RS485 communication unit; the centralized management module and the wireless monitoring module establish a communication connection relationship through a ZigBee communication unit; the distributed crude oil water content measuring module further comprises a double-isolation direct-current power supply module, a micro control unit, a distillation water vapor temperature isolation detection module, a heating furnace temperature isolation detection module, a stirrer isolation control module and an alternating-current power regulation isolation heating module. The crude oil water content tester for the distillation method with the structural characteristics has the advantages that each structural unit has good electrical isolation performance, the operation is simple, and the testing structure is reliable.
Drawings
FIG. 1 is a block diagram of a water content meter for crude oil used in distillation method according to the present invention;
FIG. 2 is a schematic circuit diagram of the centralized management module of the present invention;
fig. 3 is a schematic circuit diagram of the wireless monitoring module of the present invention;
FIG. 4 is a schematic circuit diagram of the temperature measurement chip of the present invention;
fig. 5 is a schematic circuit diagram of a first electromagnetic isolation unit according to the present invention;
FIG. 6 is a schematic circuit diagram of the thermocouple detection chip of the present invention;
fig. 7 is a schematic circuit diagram of the dc motor driving unit according to the present invention;
fig. 8 is a schematic circuit diagram of a third electromagnetic isolation unit according to the present invention;
fig. 9 is a schematic circuit diagram of the ac power adjusting isolation heating module of the present invention.
Detailed Description
The utility model provides a crude oil moisture content apparatus for distillation method, this crude oil moisture content apparatus compact structure, convenient to use.
As shown in figure 1, the utility model provides a pair of crude oil moisture content apparatus for distillation method, it is including following constitutional unit: the device comprises a centralized management module, a plurality of distributed crude oil water content determination modules and a wireless monitoring module. The centralized management module and the distributed crude oil water content measuring modules establish communication connection relations through RS485 communication units; the centralized management module and the wireless monitoring module establish a communication connection relationship through the ZigBee communication unit.
As a specific embodiment of the present invention, a circuit example diagram of a centralized management module is provided herein, as shown in fig. 2, the centralized management module is powered by an independent 3.3V dc power supply and employs a microcontroller chip of model STM32F103RCT 6; specifically, pins 1, 13, 19, 32, 48 and 64 are connected with a 3.3V _ MCU; 12. 18, 31, 47 and 63 are connected with a GND _ MCU; one end of the 10K resistor R8 is connected with a pin 60, and the other end is connected with a GND _ MCU to select a starting mode; one end of the 1K resistor R7 is connected with the 7 pin, and the other end is connected with the 3.3V _ MCU to enable the reset pin not to be enabled; the 1M resistor R6 is connected with the 8MHz crystal oscillator Y1 in parallel, one end of the 1M resistor R6 is connected with the pin 5, and the other end of the 1M resistor R1 is connected with the pin 6; one end of the 10pF matching capacitor C15 is connected with the 5 pin, and the other end is connected with the GND _ MCU, and one end of the 10pF matching capacitor C16 is connected with the 6 pin, and the other end is connected with the GND _ MCU; a 1 pin of the debugging interface SWD1 is connected with a 46 pin of the U3; the 3 pins of the debugging interface SWD1 are connected with the 48 pins of the U3; a2 pin of the debugging interface SWD1 is connected with a 3.3V _ MCU, and a4 pin is connected with a GND _ MCU. It is worth noting that according to a self-defined protocol, the centralized management module can select to connect 255 distributed crude oil water content determination modules at most, set parameters of the distributed crude oil water content determination modules through a touch screen which is preferably set, and control the working state of the distributed crude oil water content determination modules. And then, the working state of each distributed crude oil water content measuring module can be displayed through a touch screen, and the working state of each distributed crude oil water content measuring module is sent to a wireless monitoring module through a ZigBee communication module for monitoring.
The wireless monitoring module can be used as a handheld terminal, and the ZigBee communication module is used for receiving the working state of each distributed crude oil water content measuring module issued by the centralized management module to realize remote data monitoring. As a specific embodiment of the present invention, a circuit example diagram of a wireless monitoring module is provided herein, as shown in fig. 3, the wireless monitoring module is powered by a lithium battery, and obtains 3.3V _ MCU dc voltage through a switching power supply, and further selects a microcontroller chip of model STM32F103RCT 6; wherein pins 1, 13, 19, 32, 48 and 64 are connected with a 3.3V _ MCU; 12. 18, 31, 47 and 63 are connected with a GND _ MCU; one end of the 10K resistor R8 is connected with a pin 60, and the other end is connected with a GND _ MCU to select a starting mode; one end of the 1K resistor R7 is connected with the 7 pin, and the other end is connected with the 3.3V _ MCU to enable the reset pin not to be enabled; the 1M resistor R6 is connected with the 8MHz crystal oscillator Y1 in parallel, one end of the 1M resistor R6 is connected with the pin 5, and the other end of the 1M resistor R1 is connected with the pin 6; one end of the 10pF matching capacitor C15 is connected with the 5 pin, and the other end is connected with the GND _ MCU, and one end of the 10pF matching capacitor C16 is connected with the 6 pin, and the other end is connected with the GND _ MCU; a 1 pin of the debugging interface SWD1 is connected with a 46 pin of the U3; the 3 pins of the debugging interface SWD1 are connected with the 48 pins of the U3; a2 pin of the debugging interface SWD1 is connected with a 3.3V _ MCU, and a4 pin is connected with a GND _ MCU. The sockets P1 and P3 are F8913D; the pin of the P1 is connected with a 3.3V _ MCU; the 2 pin is connected with the 43 pin of the STM32F103RCT6, and the 3 pin is connected with the 42 pin of the STM32F103RCT6, so that the asynchronous serial communication function is completed. The P4 is the LCD interface that connects the TTL level, 1 pin connects 3.3V _ MCU,4 pins connect GND, 2 pins connect the 17 pin of STM32F103RCT6, 3 pins connect the 16 pin of STM32F103RCT6, accomplish power supply and asynchronous serial communication function with the serial ports LCD screen.
The distributed crude oil water content measuring module further comprises a double-isolation direct-current power supply module, a micro control unit, a distilled water vapor temperature isolation detection module, a heating furnace temperature isolation detection module, a stirrer isolation control module and an alternating-current power regulation isolation heating module; the double-isolation direct-current power supply module is respectively connected with a live wire, a zero wire and a grounding protection wire of a mains supply and used for converting 220V alternating current into 3.3V and 5V direct current (for providing electric energy for other electrical appliance units).
The distilled water vapor temperature isolation detection module is used for detecting the temperature of distilled water vapor; the temperature measuring device is composed of a platinum thermal resistor, a temperature measuring chip and a first electromagnetic isolation unit for isolating the platinum thermal resistor and the temperature measuring chip from an electric appliance. As a preferred embodiment of the present invention, as shown in fig. 4, the temperature measuring chip specifically uses a chip of MAX31865 type. The chip and the micro control unit can be connected in series through an SPI bus to transmit temperature data. Pins 19 and 20 of the temperature measuring chip are respectively connected with 0.1uF decoupling capacitors C33 and C34, and pins 7 and 8 of the temperature measuring chip are respectively connected with 0.01uF decoupling capacitors C35 for filtering voltage ripples between the platinum thermal resistor wires A and B; the 4K sampling resistor adopts a metal film resistor with high precision of 0.1% and low temperature drift of 25 PPM; the pins 8, 7 and 6 of the temperature measuring chip are connected with a terminal P3; the 3 contacts of terminal P3 are connected to the A, B, C terminal of a three wire platinum thermistor. When the output port (SPI1_ CS) of the micro control unit outputs low level, the temperature measuring chip is gated, so that the temperature of the distilled water vapor is read by communicating with the temperature measuring chip through the SPI protocol. As shown in fig. 5, the first electromagnetic isolation unit selects a three-positive-one-negative electromagnetic isolation chip with a chip model number of ADUM1401, isolates the voltage signals of the 3, 4 and 5 pins input with the GND _ MCU as a reference ground into voltage signals with the GND reference ground and outputs the voltage signals from the 14, 13 and 12 pins; the voltage signal of 11 pins input by taking GND as reference ground is isolated into a voltage signal of GND _ MCU reference ground and output from 6 pins.
The heating furnace temperature isolation detection module is used for detecting the temperature of the heating furnace; the thermocouple detection device is composed of a K-type thermocouple, a thermocouple detection chip and a second electromagnetic isolation unit for isolating the K-type thermocouple and the thermocouple detection chip from an electric appliance. As a preferred embodiment of the present invention, as shown in fig. 6, the thermocouple detection chip selects and uses a chip with a chip model of MAX 31855. Wherein the 2 and 3 pins of the thermocouple detection chip are connected with a terminal P14; the two contacts of terminal P14 may further externally connect two terminals of a type K thermocouple; the 5 and 7 pin functions of the thermocouple detection chip are respectively the clock and master-input-slave-output functions of the SPI bus; the 6 pin of the thermocouple detection chip is connected to the collector of an input PNP transistor Q7, which operates in a non-linear amplification state. When the output pin (SPI1_ CS) of the micro control unit outputs low level, the thermocouple detection chip is not switched on; otherwise, when the thermocouple detection chip is gated when the temperature measurement chip is not gated, the heating furnace temperature detected by the K-type thermocouple is read by using the SPI bus.
The stirrer isolation control module is used for stirring the crude oil in the flask to ensure that the crude oil is uniformly heated; the electromagnetic isolation device is composed of a direct current motor, a direct current motor driving unit and a third electromagnetic isolation unit for isolating the direct current motor and the direct current motor driving unit. As a preferred embodiment of the present invention, as shown in fig. 7, fig. 7 shows a circuit schematic diagram of the dc motor driving unit. Wherein, pins 13 and 24 of the direct current motor driving unit are connected with 12V; 19. the pin of 20 tubes is connected with 5V; 3. pins of 4, 9, 10 and 18 are connected with GND; a 0.1uF decoupling capacitor is connected between the 18 pins and the 20 pins; 1. pin 2 of pin 2 connection terminal P5; 5. pin 1 of the 6-pin connection terminal P5; the terminals P5 are connected with the positive and negative ends of the DC motor. When two output pins of the micro control unit are at high level or low level, the motor stops rotating; when one pin is at high level and the other pin is at low level, the motor is in positive transmission; the other pin is at low level, and when one pin is at high level, the motor reversely transmits; and the PWM duty ratio output by the other pin of the micro control unit adjusts the rotating speed of the motor. As shown in fig. 8, a three-positive-one-negative electromagnetic isolation chip with a chip model of ADUM1401 is selected as the third electromagnetic isolation unit, and the third electromagnetic isolation unit isolates the voltage signals of the pins 3, 4 and 5, which are input with GND _ MCU as a reference ground, into voltage signals with GND reference ground and outputs the voltage signals from the pins 14, 13 and 12. A pin 1 of the third electromagnetic isolation unit is connected with a 3.3V _ MCU power supply, and a pin 8 is connected with a GND _ MCU for supplying power to the isolation input part; 3. pins 4 and 5 (GND _ MCU is reference ground) are respectively connected to the output pins of the micro control unit (also taking GND _ MCU as reference ground). A 16 pin of the third electromagnetic isolation unit is connected with a 3.3V power supply, and a 9 pin of the third electromagnetic isolation unit is connected with GND (ground potential) to supply power to the isolation output part; 14. pins 13 and 12 (GND is reference ground) are respectively connected to pins 23, 22 and 21 of U10 (also with GND as reference ground).
The alternating current power regulation isolation heating module is connected with an external heating furnace and used for regulating a heating mode under the control of the micro control unit to realize heating of the flask; specifically, as shown in fig. 9, the ac power-adjusting isolated heating module includes an optocoupler with model number MOC3063 and a triac with model number BTA 41-600B. Wherein, the 1 st pin of the MOC3063 optical coupler is connected with the micro control unit; the 4 th pin of the MOC3063 optocoupler is respectively connected with a trigger pin of the bidirectional thyristor and one end interface of the external heating furnace, and the other end interface of the external heating furnace is connected with an N line; and a 6 th pin of the MOC3063 optocoupler is respectively connected with a first main electrode end of the bidirectional thyristor and the L line. A current-limiting resistor R31 is also arranged between the 1 st pin of the MOC3063 optocoupler and the micro control unit; the current limiting resistor R31 is used for limiting the current of a light emitting diode in the MOC3063 optical coupler to be below 7.5 mA. Further optionally, a first resistor R34 is further connected between the 4 th pin of the MOC3063 optocoupler and the second main electrode terminal of the triac; and a resistance-capacitance absorption circuit formed by connecting a second resistor R33 and a capacitor C36 in series is connected between the first main electrode end of the bidirectional thyristor and the second main electrode end of the bidirectional thyristor.
The utility model provides a crude oil moisture content tester for a distillation method, which comprises a centralized management module, a plurality of distributed crude oil moisture content testing modules and a wireless monitoring module, wherein a communication connection relation is established between the centralized management module and the plurality of distributed crude oil moisture content testing modules through an RS485 communication unit; the centralized management module and the wireless monitoring module establish a communication connection relationship through a ZigBee communication unit; the distributed crude oil water content measuring module further comprises a double-isolation direct-current power supply module, a micro control unit, a distillation water vapor temperature isolation detection module, a heating furnace temperature isolation detection module, a stirrer isolation control module and an alternating-current power regulation isolation heating module. The crude oil water content tester for the distillation method with the structural characteristics has the advantages that each structural unit has good electrical isolation performance, the operation is simple, and the testing structure is reliable.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a crude oil moisture content apparatus for distillation method which characterized in that, including:
the system comprises a centralized management module, a plurality of distributed crude oil water content determination modules and a wireless monitoring module; the centralized management module and the plurality of distributed crude oil water content measuring modules establish a communication connection relationship through an RS485 communication unit; the centralized management module and the wireless monitoring module establish a communication connection relationship through a ZigBee communication unit;
the distributed crude oil water content measuring module comprises a double-isolation direct-current power supply module, a micro control unit, a distilled water vapor temperature isolation detection module, a heating furnace temperature isolation detection module, a stirrer isolation control module and an alternating-current power regulation isolation heating module;
the double-isolation direct-current power supply module is respectively connected with a live wire, a zero line and a grounding protection wire of a commercial power and is used for converting 220V alternating current into 3.3V and 5V direct current;
the distillation water vapor temperature isolation detection module consists of a platinum thermal resistor, a temperature measurement chip and a first electromagnetic isolation unit for isolating the platinum thermal resistor and the temperature measurement chip from an electric appliance;
the heating furnace temperature isolation detection module consists of a K-type thermocouple, a thermocouple detection chip and a second electromagnetic isolation unit for isolating the K-type thermocouple and the thermocouple detection chip from an electric appliance;
the stirrer isolation control module consists of a direct current motor, a direct current motor driving unit and a third electromagnetic isolation unit for isolating the direct current motor and the direct current motor driving unit;
the alternating current power regulation isolation heating module is connected with an external heating furnace and used for adjusting a heating mode under the control of the micro control unit to realize heating of the flask.
2. The apparatus of claim 1, wherein the temperature measuring chip has a chip model of MAX 31865; the first electromagnetic isolation unit uses a three-positive-one reverse electromagnetic isolation chip with the chip model number ADUM 1401.
3. The apparatus of claim 1, wherein the thermocouple detection chip has a chip model of MAX 31855.
4. The instrument for measuring the water content of crude oil for distillation according to claim 1, wherein the third electromagnetic isolation unit uses a three-positive-one-reverse electromagnetic isolation chip with a chip model number of ADUM 1401.
5. The instrument for measuring the water content of crude oil for distillation according to claim 1, wherein the alternating current power-adjusting isolation heating module comprises an optocoupler with the model number of MOC3063 and a bidirectional thyristor with the model number of BTA 41-600B;
wherein, the 1 st pin of the MOC3063 optical coupler is connected with the micro control unit;
the 4 th pin of the MOC3063 optocoupler is respectively connected with a trigger pin of the bidirectional thyristor and one end interface of the external heating furnace, and the other end interface of the external heating furnace is connected with an N line;
and a 6 th pin of the MOC3063 optocoupler is respectively connected with a first main electrode end of the bidirectional thyristor and the L line.
6. The instrument for measuring the water content of crude oil for distillation according to claim 5, wherein a current limiting resistor is further arranged between the 1 st pin of the MOC3063 optical coupler and the micro control unit; the current limiting resistor is used for limiting the current of a light emitting diode in the MOC3063 optical coupler to be below 7.5 mA.
7. The instrument for measuring the water content of crude oil for distillation according to claim 5, wherein a first resistor is further connected between the 4 th pin of the MOC3063 optocoupler and the second main electrode end of the bidirectional thyristor.
8. The instrument for measuring the water content of crude oil for distillation according to claim 5, wherein a resistance-capacitance absorption circuit consisting of a second resistor R33 and a capacitor C36 connected in series is connected between the first main electrode terminal of the triac and the second main electrode terminal of the triac.
9. The instrument for measuring the water content of crude oil for distillation according to claim 1, wherein a touch screen module is further arranged in the centralized management module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031502A (en) * | 2019-05-20 | 2019-07-19 | 胜利油田科华设备仪器有限责任公司 | A kind of way of distillation crude oil water content analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031502A (en) * | 2019-05-20 | 2019-07-19 | 胜利油田科华设备仪器有限责任公司 | A kind of way of distillation crude oil water content analyzer |
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