CN210638756U - Gas volume correction instrument - Google Patents
Gas volume correction instrument Download PDFInfo
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- CN210638756U CN210638756U CN201921671366.6U CN201921671366U CN210638756U CN 210638756 U CN210638756 U CN 210638756U CN 201921671366 U CN201921671366 U CN 201921671366U CN 210638756 U CN210638756 U CN 210638756U
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Abstract
The utility model discloses a gaseous volume correction appearance belongs to the correction appearance field, including the casing, casing fixed connection is integrated with SGERG-88, AGANX-19 compression factor calculation model's low-power consumption microprocessor and the temperature pressure module rather than being connected, preamplifier, control button, built-in power supply, outer power supply, memory, liquid crystal display, pulse drive amplifier circuit, 4 ~ 20mA current signal output circuit, RS485 signal output circuit, alarm output circuit and wireless communication circuit. The utility model discloses set up pulse drive amplifier circuit, 4 ~ 20mA current signal output circuit, RS485 signal output circuit, alarm output circuit and wireless communication circuit, optional arbitrary mode and host computer, second grade instrument and computer network deployment, data transmission's circuit kind is many, has enlarged the selection range of network deployment instrument.
Description
Technical Field
The utility model relates to a correction appearance field especially indicates a gaseous volume correction appearance.
Background
The intelligent volume corrector integrates flow, temperature and pressure detection functions into a whole, can automatically compensate temperature, pressure and compression factors, can be matched with a turbine flowmeter and a waist wheel flowmeter, converts the working condition volume of gas measured by a mechanical gas meter into the volume under a specified standard condition for accurate correction, and is an optimal measuring instrument for ensuring the modernization of gas management.
Most of the existing correction instruments only have a correction function and cannot be networked with a secondary instrument.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gaseous volume correction appearance has solved among the prior art that the most simple of correction appearance only possesses the correction function, unable and the problem of secondary instrument network deployment.
The technical scheme of the utility model is realized like this:
a gas volume corrector comprises a shell, wherein the shell is fixedly connected with a low-power-consumption microprocessor integrated with an SGERG-88 and AGANX-19 compression factor calculation model, a temperature and pressure module, a preamplifier, a control key, an internal power supply, an external power supply, a memory, a liquid crystal display screen, a pulse driving amplification circuit, a 4-20 mA current signal output circuit, an RS485 signal output circuit, an alarm output circuit and a wireless communication circuit; the memory is connected with the low-power-consumption microprocessor, and the built-in power supply and the external power supply provide dual power supplies; the control key sends a control command to the low-power-consumption microprocessor; the temperature and pressure module is respectively connected with a temperature sensor and a pressure sensor and transmits temperature and pressure pulse signals to the low-power-consumption microprocessor, the preamplifier is connected with the flow sensor and amplifies the flow pulse signals and then transmits the amplified flow pulse signals to the low-power-consumption microprocessor, the low-power-consumption microprocessor calculates instantaneous flow and total amount of working conditions and standard conditions according to the temperature, pressure and flow pulse signals, sends the instantaneous flow and total amount of the working conditions and the standard conditions to the liquid crystal display screen for display, outputs the instantaneous flow and total amount of the working conditions and the standard conditions through a pulse driving amplifying circuit, a 4-20 mA current signal output circuit, an RS485 signal output circuit, an alarm output circuit and a wireless communication circuit, and is networked with a secondary instrument and a computer network to form a network management; the temperature and pressure module comprises a compensation circuit and a double-channel A/D conversion circuit, the temperature sensor and the pressure sensor are connected in parallel and then are connected in series with the compensation circuit, the compensation circuit comprises a constant current triode and an adjustable resistor, the adjustable resistor is connected with the control end of the constant current triode, the output ends of the temperature sensor and the pressure sensor are connected with the double-channel A/D conversion circuit, and the output end of the double-channel A/D conversion circuit is connected with the low-power-consumption microprocessor.
As a preferred embodiment of the present invention, the liquid crystal display displays date, instantaneous/cumulative flow of standard conditions, instantaneous/cumulative flow of operating conditions, battery level, and various alarm signals and status symbols.
As the utility model discloses a preferred embodiment, the upper and lower limit of alarm output circuit output flow, temperature, pressure transfinites alarm signal, battery under-voltage alarm signal and self-diagnosis alarm signal, and above-mentioned alarm signal is in liquid crystal display shows.
As a preferred embodiment of the present invention, the memory is at least internally provided with 256K of solid-state memories, and stores 10000 groups of data.
As a preferred embodiment of the present invention, the wireless communication circuit is a GPRS/CDMA, Internet network and/or telephone network.
The beneficial effects of the utility model reside in that: the pulse driving amplifying circuit, the 4-20 mA current signal output circuit, the RS485 signal output circuit, the alarm output circuit and the wireless communication circuit are arranged, networking with an upper computer, a secondary instrument and a computer can be selected in any mode, the types of circuits for data transmission are various, and the selection range of networking instruments is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a front view of a gas volume correction instrument of the present invention;
fig. 2 is a left side view of the gas volume correction instrument of the present invention;
fig. 3 is a rear view of the gas volume correction instrument of the present invention;
fig. 4 is a circuit block diagram of a gas volume correction instrument according to the present invention;
fig. 5 is a circuit schematic of the preamplifier.
In the drawings, 1-housing; 2-a low power microprocessor; 3-warm pressing module; 4-a preamplifier; 5-control the key; 6-built-in power supply; 7-external power supply; 8-a memory; 9-liquid crystal display screen; 10-a pulse drive amplification circuit; an 11-4 to 20mA current signal output circuit; 12-RS485 signal output circuit; 13-an alarm output circuit; 14-wireless communication circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-5, the utility model provides a gas volume correction instrument, including casing 1, casing 1 fixed connection is integrated with SGERG-88, AGANX-19 compression factor calculation model's low-power consumption microprocessor 2, warm-pressing module 3, preamplifier 4, control button 5, built-in power supply 6, external power supply 7, memory 8, liquid crystal display 9, pulse drive amplifier circuit 10, 4 ~ 20mA current signal output circuit 11, RS485 signal output circuit 12, warning output circuit 13 and wireless communication circuit 14; the memory 8 is connected with the low-power-consumption microprocessor 2, and the internal power supply 6 and the external power supply 7 provide dual power supplies; the control key 5 sends a control command to the low-power consumption microprocessor 2; the temperature and pressure module 3 is respectively connected with a temperature sensor and a pressure sensor, the temperature and pressure pulse signals are transmitted to the low-power consumption microprocessor 2, the preamplifier 4 is connected with the flow sensor, the flow pulse signals are transmitted to the low-power consumption microprocessor 2 after being amplified, the low-power consumption microprocessor 2 calculates instantaneous flow and total amount of working conditions and standard conditions according to the temperature, pressure and flow pulse signals, the instantaneous flow and total amount of the working conditions and the standard conditions are sent to the liquid crystal display 9 to be displayed, the instantaneous flow and total amount of the working conditions and the standard conditions are output through the pulse driving amplifying circuit 10, the 4-20 mA current signal output circuit 11, the RS485 signal output circuit 12, the alarm output circuit 13 and the wireless communication circuit 14, and the instantaneous flow and total amount of the working conditions and the standard. Warm-pressing module 3 includes compensating circuit and binary channels AD converting circuit, and temperature sensor and pressure sensor establish ties with compensating circuit after parallelly connected, and compensating circuit includes constant current triode and adjustable resistance, and adjustable resistance is connected with constant current triode's control end, and constant current triode's and adjustable resistance's power input end and power are anodal to be connected, and constant current triode's output and temperature sensor and pressure sensor are connected, the utility model discloses well temperature sensor and pressure sensor are supplied power by internal power source 6 or external power supply 7, and temperature sensor and pressure sensor's output and binary channels AD converting circuit are connected, and binary channels AD converting circuit's output and low-power consumption microprocessor 2 are connected. The dual-channel A/D conversion circuit is prior art and is not described in detail. The low-power consumption microprocessor 2 can adopt MSP430 or select model number according to user's requirement; the control key 5 is a common technology and is not described again; after the model of the low power consumption microprocessor 2 is selected, a person skilled in the art can select a specific model of the liquid crystal display 9 according to the prior art, and details are not repeated.
The utility model discloses set up warm-pressing module 3, can gather and handle temperature sensor, pressure sensor's data simultaneously, guarantee temperature, pressure pulse signal's synchronism, improve and calculate the precision. The preamplifier 4 amplifies and transmits the flow pulse signal, and the accuracy can be improved. In addition, the pulse driving amplifying circuit 10, the 4-20 mA current signal output circuit 11, the RS485 signal output circuit 12, the alarm output circuit 13 and the wireless communication circuit 14 are arranged, any mode can be selected to be networked with an upper computer, a secondary instrument and a computer, the types of circuits for data transmission are various, and the selection range of networking instruments is expanded.
The liquid crystal display screen 9 displays date, standard condition instantaneous/accumulated flow, working condition instantaneous/accumulated flow, battery power, various alarm signals and state symbols. The large screen liquid crystal provides rich display information, is clear and visual, and is convenient to read.
The alarm output circuit 13 outputs the upper and lower limit overrun alarm signals of the flow, the temperature and the pressure, the battery under-voltage alarm signal and the self-diagnosis alarm signal, and the alarm signals are displayed on the liquid crystal display 9. The upper and lower alarm limits of parameters such as flow, temperature, pressure and the like of the corrector can be set, and the overrun alarm is output to achieve the purpose of monitoring. When the voltage of the battery is lower than 3.2V, an alarm signal is output to prompt the replacement of the battery; when the voltage of the battery is lower than 3.1V, an alarm signal is output, and a valve closing and cutting signal is output at the moment. When the temperature, the pressure and the flow are abnormal, the correcting instrument can send out an alarm signal, records are stored in the memory 8, a user is reminded of repairing the fault in time, and the records are provided for the user to analyze.
The memory 8 is at least internally provided with 256K solid-state memories for storing 10000 groups of data; for example, the number of the latest 8500 times of running data records (including time, temperature, pressure, instantaneous flow, working condition accumulated flow, standard accumulated flow and the like) can be set, and the recording interval time can be set within the range of (5 min-60 min); 1095 daily records, 60 monthly records, and 40 event records. The memory 8 adopts EEPROM (FM25 series, M25P series or M45P series, etc.) to store perfect meter operation data and event records, which is convenient for users to inquire and browse.
The RS485 signal output circuit 12 outputs signals by adopting a standard Modbus protocol, is convenient to be in communication connection with any monitoring system and any actuator, and achieves the purposes of data remote transmission and feedback control. The device can be directly networked with an upper computer, and can remotely transmit the temperature, pressure, standard volume flow and total amount of a measured medium, working condition volume total amount, related parameters of a flowmeter, fault codes, running states, real-time data and the like. The circuit structure of the RS485 signal output circuit 12 is the prior art and is not described in detail.
The wireless communication circuit 14 is a GPRS/CDMA, Internet network and/or telephone network, is used in cooperation with a special signal acquisition unit (RTU), performs data transmission through the network, reads historical data and fault states of any flow meter in the network, and can remotely set relevant parameters of various flow meters. One signal acquisition instrument can be provided with 1-16 flowmeters. The utility model discloses still can directly network deployment in the SCADA system through wireless communication circuit 14. The circuit structure of the wireless communication circuit 14 is conventional and will not be described in detail.
The 4-20 mA current signal output circuit 11 outputs 4 mA-20 mA standard current signals, and can be matched with instruments, meters and actuators such as secondary instruments or recorders and the like to achieve the purpose of remote reading or feedback control. The circuit structure of the 4-20 mA current signal output circuit 11 is the prior art and is not described in detail.
The pulse driving amplifier circuit 10 (the circuit structure is prior art and is not described in detail) has the following functions:
(1) flow quantitative signal output function: the quantitative pulse signal can be set and output at will according to the requirements of users. The corrector can be directly connected with a common intelligent IC card meter on the market at home to form a prepayment charging system, thereby facilitating the charging management of users.
(2) And directly amplifying and outputting the working condition original pulse signal detected by the flow sensor.
(3) And amplifying and outputting the working condition pulse signal detected by the flow sensor after linear correction processing.
(4) And outputting a frequency signal which is in direct proportion to the standard instantaneous flow, namely a standard condition pulse signal, and outputting the pulse equivalent which can be set by a user.
The utility model discloses a function as follows:
nonlinear correction function: the correcting instrument can carry out combined correction according to the error curve of the base table, improves the metering accuracy of the flowmeter and enlarges the range ratio.
Dual power supply function: the power supply in the flowmeter adopts DC3.6V power supply; the external power supply 7 is supplied with (9-24) VDC. When the external power supply is adopted, the power supply of the internal power supply is automatically cut off. The circuit structures of the internal power supply 6 and the external power supply 7 are the prior art and are not described in detail.
Micro power consumption design: the average power consumption is low, and the lithium battery (3.6V) can be used for a long time.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A gas volume correction appearance, includes the casing, its characterized in that: the shell is fixedly connected with a low-power-consumption microprocessor integrated with an SGERG-88 and AGANX-19 compression factor calculation model, a temperature and pressure module, a preamplifier, a control key, an internal power supply, an external power supply, a memory, a liquid crystal display screen, a pulse driving amplification circuit, a 4-20 mA current signal output circuit, an RS485 signal output circuit, an alarm output circuit and a wireless communication circuit; the memory is connected with the low-power-consumption microprocessor, and the built-in power supply and the external power supply provide dual power supplies; the control key sends a control command to the low-power-consumption microprocessor; the temperature and pressure module is respectively connected with a temperature sensor and a pressure sensor and transmits temperature and pressure pulse signals to the low-power-consumption microprocessor, the preamplifier is connected with the flow sensor and amplifies the flow pulse signals and then transmits the amplified flow pulse signals to the low-power-consumption microprocessor, the low-power-consumption microprocessor calculates instantaneous flow and total amount of working conditions and standard conditions according to the temperature, pressure and flow pulse signals, sends the instantaneous flow and total amount of the working conditions and the standard conditions to the liquid crystal display screen for display, outputs the instantaneous flow and total amount of the working conditions and the standard conditions through a pulse driving amplifying circuit, a 4-20 mA current signal output circuit, an RS485 signal output circuit, an alarm output circuit and a wireless communication circuit, and is networked with a secondary instrument and a computer network to form a network management; the temperature and pressure module comprises a compensation circuit and a double-channel A/D conversion circuit, the temperature sensor and the pressure sensor are connected in parallel and then are connected in series with the compensation circuit, the compensation circuit comprises a constant current triode and an adjustable resistor, the adjustable resistor is connected with the control end of the constant current triode, the output ends of the temperature sensor and the pressure sensor are connected with the double-channel A/D conversion circuit, and the output end of the double-channel A/D conversion circuit is connected with the low-power-consumption microprocessor.
2. A gas volume correction instrument according to claim 1, wherein: the liquid crystal display screen displays date, standard condition instantaneous/accumulated flow, working condition instantaneous/accumulated flow, battery electric quantity, alarm signal and state symbol.
3. A gas volume correction instrument according to claim 2, wherein: the alarm output circuit outputs upper and lower limit overrun alarm signals of flow, temperature and pressure, battery under-voltage alarm signals and self-diagnosis alarm signals, and the alarm signals are displayed on the liquid crystal display screen.
4. A gas volume correction instrument according to claim 1, wherein: the memory is at least internally provided with 256K solid-state memories for storing 10000 groups of data.
5. A gas volume correction instrument according to claim 1, wherein: the wireless communication circuit is GPRS/CDMA, Internet network and/or telephone network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921671366.6U CN210638756U (en) | 2019-10-08 | 2019-10-08 | Gas volume correction instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921671366.6U CN210638756U (en) | 2019-10-08 | 2019-10-08 | Gas volume correction instrument |
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| Publication Number | Publication Date |
|---|---|
| CN210638756U true CN210638756U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921671366.6U Active CN210638756U (en) | 2019-10-08 | 2019-10-08 | Gas volume correction instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484292A (en) * | 2021-12-20 | 2022-05-13 | 天信仪表集团有限公司 | Combustible gas monitoring device and method |
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2019
- 2019-10-08 CN CN201921671366.6U patent/CN210638756U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484292A (en) * | 2021-12-20 | 2022-05-13 | 天信仪表集团有限公司 | Combustible gas monitoring device and method |
| CN114484292B (en) * | 2021-12-20 | 2024-05-10 | 天信仪表集团有限公司 | Combustible gas monitoring device and method |
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