CN215215735U - Intelligent LNG loading/unloading skid-mounted control system - Google Patents
Intelligent LNG loading/unloading skid-mounted control system Download PDFInfo
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- CN215215735U CN215215735U CN202121086021.1U CN202121086021U CN215215735U CN 215215735 U CN215215735 U CN 215215735U CN 202121086021 U CN202121086021 U CN 202121086021U CN 215215735 U CN215215735 U CN 215215735U
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- unloading
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Abstract
The utility model provides an intelligent LNG loading/unloading skid-mounted control system, including the diffuse pipeline and sweep the pipeline, diffuse pipeline and sweep the pipeline and all be linked together with tank wagon gas phase export and tank wagon liquid phase export, tank wagon gas phase export is linked together through pressure boost pipeline and storage tank gas phase mouth, tank wagon liquid phase export is linked together through unloading pipeline and loading pipeline and storage tank liquid phase mouth respectively, pressure boost pipeline and unloading pipeline are linked together; the pressurization pipeline is provided with a gas phase detection assembly and a pressurization control assembly, a liquid phase detection assembly and a flowmeter are arranged at a liquid phase outlet of the tank car, an unloading detection assembly and an unloading control assembly are arranged on the unloading pipeline, and a loading control assembly is arranged on the loading pipeline. The utility model discloses can effective staff reduces the manpower to the intelligent control that LNG (dress) unloaded, simple to operate, easy operation.
Description
Technical Field
The utility model relates to a technical field of LNG liquid feeding especially relates to an intelligence LNG loading/unloading sled dress control system.
Background
The natural gas is widely applied to various fields such as industry, civilian use, traffic and the like, and in places where natural pipelines are not covered, LNG or CNG is mostly adopted to supply supplementary natural gas, the main component of the LNG is methane, and the LNG is colorless, tasteless, nontoxic and noncorrosive, and has the volume of 1/625 which is about the volume of the same amount of gaseous natural gas. Among all clean fuels, natural gas is considered by many countries and experts in the world as the most suitable alternative fuel for automobiles at present due to its mature application technology, safety and reliability, low temperature, large gas-liquid expansion ratio, high energy efficiency, easy transportation and storage, and economic feasibility. The automobile uses natural gas as power fuel, and has positive promotion effects on reducing atmospheric pollution and improving the environment; however, at present, frequent patrol of workers is required in an LNG liquid adding station and a storage station, and the workers cannot timely handle the frequent patrol when faults occur.
SUMMERY OF THE UTILITY MODEL
To at present need staff frequent inspection in LNG liquid feeding station, storage station, when breaking down, the staff can not in time handle technical problem, the utility model provides an intelligence LNG loading/sled dress control system that unloads.
In order to solve the above problem, the technical scheme of the utility model is so realized:
the intelligent LNG loading/unloading skid-mounted control system comprises a diffusing pipeline and a purging pipeline, wherein the diffusing pipeline and the purging pipeline are communicated with a tank car gas phase outlet and a tank car liquid phase outlet, the tank car gas phase outlet is communicated with a storage tank gas phase port through a pressurization pipeline, the tank car liquid phase outlet is communicated with a storage tank liquid phase port through an unloading pipeline and a loading pipeline respectively, and the pressurization pipeline is communicated with an unloading pipeline; install gaseous phase detection subassembly and pressure boost control assembly on the pressure boost pipeline, tank wagon liquid phase export is installed liquid phase detection subassembly and flowmeter, unloads and installs unloading detection subassembly and unloading control assembly on the pipeline of unloading, installs loading control assembly on the loading pipeline, and gaseous phase detection subassembly, pressure boost control assembly, liquid phase detection subassembly, flowmeter, the detection subassembly that unloads, the control assembly that unloads and loading control assembly all are connected with the switch board.
Preferably, the pressurization pipeline comprises a storage tank gas phase branch, a tank car gas phase branch and a liquid phase pressurization branch, the tank car gas phase port is communicated with the storage tank gas phase port through the storage tank gas phase branch, the storage tank gas phase branch is communicated with the tank car gas phase branch, the tank car gas phase branch is communicated with the liquid phase pressurization branch through an unloading pressurizer, and the liquid phase pressurization branch is respectively communicated with the unloading pipeline and a tank car liquid phase outlet; and the gas phase branch of the storage tank is provided with a gas phase detection assembly, and the gas phase branch of the storage tank, the tank car gas phase branch and the liquid phase pressurization branch are respectively provided with a pressurization control assembly.
Preferably, the gas phase detection assembly comprises a gas phase outlet pressure sensor and a gas phase outlet temperature sensor, and the gas phase outlet pressure sensor and the gas phase outlet temperature sensor are arranged between the gas phase branch of the storage tank and the gas phase outlet of the tank car; the tank car pressurization control component comprises a tank car pressurization valve, a liquid phase pressurization valve and a storage tank pressurization valve, wherein the tank car pressurization valve is installed on a tank car gas phase branch, the liquid phase pressurization valve is installed on a liquid phase pressurization branch, and the storage tank pressurization valve is installed on a storage tank gas phase branch; and the gas-phase outlet pressure sensor, the gas-phase outlet temperature sensor, the tank car pressurization valve, the liquid-phase pressurization valve and the storage tank pressurization valve are all connected with the control cabinet.
Preferably, the liquid phase detection assembly comprises a liquid phase outlet pressure sensor and a liquid phase outlet temperature sensor, the liquid phase outlet pressure sensor and the liquid phase outlet temperature sensor are installed between a liquid phase outlet of the tank car and the unloading pipeline and the loading pipeline, and the liquid phase outlet pressure sensor and the liquid phase outlet temperature sensor are connected with the control cabinet.
Preferably, the unloading pipeline is provided with a cryogenic pump, the unloading detection assembly comprises a cryogenic pump inlet pressure sensor, a cryogenic pump outlet pressure sensor and a cryogenic pump outlet temperature sensor, the cryogenic pump inlet pressure sensor is arranged at the inlet of the cryogenic pump, and the cryogenic pump outlet pressure sensor and the cryogenic pump outlet temperature sensor are sequentially arranged at the outlet of the cryogenic pump; the unloading control assembly comprises an unloading valve, and the unloading valve is arranged between the unloading pipeline and the liquid phase port of the storage tank; the cryogenic pump, the cryogenic pump inlet pressure sensor, the cryogenic pump outlet temperature sensor and the unloading valve are all connected with the control cabinet.
Preferably, the loading control assembly comprises a loading valve, the loading valve is installed on the loading pipeline, and the loading valve is connected with the control cabinet.
Preferably, a master control PLC is arranged in the control cabinet, the master control PLC is connected with an upper computer, the master control PLC is respectively connected with a gas phase outlet temperature sensor and a gas phase outlet pressure sensor in the gas phase detection assembly, a tank car pressurization valve, a liquid phase pressurization valve and a storage tank pressurization valve in the pressurization control assembly, a liquid phase outlet pressure sensor and a liquid phase outlet temperature sensor in the liquid phase detection assembly, a cryogenic pump inlet pressure sensor, a cryogenic pump outlet pressure sensor and a cryogenic pump outlet temperature sensor in the unloading detection assembly, an unloading valve in the unloading control assembly and a loading valve in the loading control assembly, and the master control PLC is connected with the cryogenic pump through a frequency converter.
Preferably, the tank car pressurization valve, the storage tank pressurization valve, the liquid phase pressurization valve, the loading valve and the unloading valve are all pneumatic control valves.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a master control PLC in the intelligent control cabinet is to the intelligent flowmeter on scene, gaseous phase export pressure sensor, gaseous phase export temperature sensor, liquid phase export pressure sensor, liquid phase export temperature sensor, cryogenic pump malfunction alerting detects, the long-range/on-the-spot detection of cryogenic pump, cryogenic pump running state detects, cryogenic pump entry pressure sensor, cryogenic pump export pressure sensor, data such as cryogenic pump export temperature sensor gather, the analysis, control field valve switch, start converter control low temperature immersed pump operation, realize adding the LNG in the low temperature storage tank to the vehicle in, can ensure LNG air entrainment equipment normal operating at the air entrainment in-process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 creative efforts.
Fig. 1 is a schematic view of the pipeline layout structure of the present invention.
In the figure, 1 is a cryogenic pump, 2 is a flowmeter, 3 is a loading valve, 4 is an unloading valve, 5 is a tank wagon pressurization valve, 6 is a liquid phase pressurization valve, and 7 is a storage tank pressurization valve.
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 any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the intelligent LNG loading/unloading skid-mounted control system comprises a diffusing pipeline and a purging pipeline, wherein the diffusing pipeline and the purging pipeline are both communicated with a tank car gas phase outlet and a tank car liquid phase outlet, the tank car gas phase outlet is communicated with a storage tank gas phase port through a pressurizing pipeline, the tank car liquid phase outlet is respectively communicated with the storage tank liquid phase port through an unloading pipeline and a loading pipeline, and the pressurizing pipeline is communicated with an unloading pipeline; a gas phase detection assembly and a pressurization control assembly are installed on the pressurization pipeline, a liquid phase detection assembly and a flowmeter 2 are installed at a liquid phase outlet of the tank car, and the intelligent flowmeter is a low-temperature mass flowmeter; the device comprises a control cabinet, a gas phase detection assembly, a pressurization control assembly, a liquid phase detection assembly, a flowmeter 2, an unloading detection assembly, an unloading control assembly and an unloading control assembly, wherein the gas phase detection assembly, the pressurization control assembly, the liquid phase detection assembly, the flowmeter 2, the unloading detection assembly, the unloading control assembly and the unloading control assembly are all connected with the control cabinet.
The pressurizing pipeline comprises a storage tank gas phase branch, a tank car gas phase branch and a liquid phase pressurizing branch, the tank car gas phase port is communicated with the storage tank gas phase port through the storage tank gas phase branch, the storage tank gas phase branch is communicated with the tank car gas phase branch, the tank car gas phase branch is communicated with the liquid phase pressurizing branch through an unloading pressurizer, and the liquid phase pressurizing branch is respectively communicated with the unloading pipeline and a tank car liquid phase outlet; and the gas phase branch of the storage tank is provided with a gas phase detection assembly, and the gas phase branch of the storage tank, the tank car gas phase branch and the liquid phase pressurization branch are respectively provided with a pressurization control assembly.
The gas phase detection assembly comprises a gas phase outlet pressure sensor and a gas phase outlet temperature sensor, and the gas phase outlet pressure sensor and the gas phase outlet temperature sensor are arranged between the gas phase branch of the storage tank and the gas phase outlet of the tank car; the pressurization control component comprises a tank car pressurization valve 5, a liquid phase pressurization valve 6 and a storage tank pressurization valve 7, wherein the tank car pressurization valve 5 is installed on a tank car gas phase branch, the liquid phase pressurization valve 6 is installed on a liquid phase pressurization branch, and the storage tank pressurization valve 7 is installed on a storage tank gas phase branch; and the gas-phase outlet pressure sensor, the gas-phase outlet temperature sensor, the tank car pressurization valve 5, the liquid-phase pressurization valve 6 and the storage tank pressurization valve 7 are all connected with the control cabinet.
The liquid phase detection assembly comprises a liquid phase outlet pressure sensor and a liquid phase outlet temperature sensor, the liquid phase outlet pressure sensor and the liquid phase outlet temperature sensor are installed between a liquid phase outlet of the tank car and an unloading pipeline and a loading pipeline, and the liquid phase outlet pressure sensor and the liquid phase outlet temperature sensor are connected with the control cabinet.
The unloading pipeline is provided with a cryogenic pump 1, and the cryogenic pump has the judgment conditions of cryogenic pump fault alarm detection, cryogenic pump remote/local detection, cryogenic pump running state detection, cryogenic pump fault alarm detection, cryogenic pump remote/local detection and cryogenic pump running state detection frequency converter control on whether the cryogenic pump is normal or not; the unloading detection assembly comprises a cryogenic pump inlet pressure sensor, a cryogenic pump outlet pressure sensor and a cryogenic pump outlet temperature sensor, wherein the cryogenic pump inlet pressure sensor is arranged at the inlet of the cryogenic pump, and the cryogenic pump outlet pressure sensor and the cryogenic pump outlet temperature sensor are sequentially arranged at the outlet of the cryogenic pump; the unloading control assembly comprises an unloading valve 4, and the unloading valve 4 is arranged between the unloading pipeline and the liquid phase port of the storage tank; the cryogenic pump 1, the cryogenic pump inlet pressure sensor, the cryogenic pump outlet temperature sensor and the unloading valve 4 are all connected with the control cabinet; the loading control assembly comprises a loading valve 3, the loading valve 3 is installed on the loading pipeline, and the loading valve is connected with the control cabinet.
The control cabinet is internally provided with a master control PLC which is respectively connected with the flowmeter and an upper computer, the master control PLC is respectively connected with a gas phase outlet temperature sensor and a gas phase outlet pressure sensor in the gas phase detection component, a tank car pressurization valve 5, a liquid phase pressurization valve 6 and a storage tank pressurization valve 7 in the pressurization control component, a liquid phase outlet pressure sensor and a liquid phase outlet temperature sensor in the liquid phase detection component, and a low temperature pump inlet pressure sensor in the unloading detection component, the low-temperature pump outlet pressure sensor is connected with the low-temperature pump outlet temperature sensor, an unloading valve in the unloading control assembly and a loading valve in the loading control assembly, the master control PLC is connected with the low-temperature pump 1 through a frequency converter, the frequency converter is started by the master control PLC to control the low-temperature pump, and the tank wagon pressurization valve 5, the storage tank pressurization valve 7, the liquid phase pressurization valve 6, the loading valve 3 and the unloading valve 4 are all pneumatic control valves; the control cabinet is also internally provided with an electrical control element, a display touch screen, a fault alarm and the like, the fault alarm comprises LNG leakage alarm, equipment fault alarm, system internal alarm, acquired data abnormity alarm and frequency converter alarm, the electrical control element comprises an air switch, an alternating current contactor, an intermediate relay, a fuse, a power switch and the like, a loading and unloading signal is detected by a master control PLC, the master control PLC processes and judges data, and the frequency converter is controlled to start a cryogenic pump to operate; the master control PLC judges field data for detection and controls the operation of the cryogenic pump; the upper computer and the display touch screen display are used for displaying field data and valve states and operating the system; the electric control element comprises an air switch, an alternating current contactor and other components; the fault alarm is LNG leakage alarm, equipment fault alarm, system fault alarm, parameter abnormity alarm, frequency converter fault alarm and the like.
When the LNG filling station, the storage station and the like are in normal operation states during operation, at the moment, the LNG filling station, the storage station and the like are in operation, and the data intelligent flow meter, the gas phase outlet pressure sensor, the gas phase outlet temperature sensor, the liquid phase outlet pressure sensor, the liquid phase outlet temperature sensor, the low-temperature pump fault alarm detection, the low-temperature pump remote/local detection, the low-temperature pump operation state detection, the low-temperature pump inlet pressure sensor, the low-temperature pump outlet pressure sensor and the low-temperature pump outlet temperature sensor are in operation; the fault alarm comprises LNG leakage alarm, equipment fault alarm, system internal alarm, acquired data abnormity alarm and frequency converter alarm. The data is processed by the master control PLC and is connected with the display touch screen through a network cable, and the data is displayed on the upper computer, so that managers can conveniently monitor the real-time states of the on-site LNG filling station and the storage station; if the fault occurs, an alarm lamp and an alarm sound prompt are given to remind field personnel to process the fault in time, and professional personnel and the field personnel can perform remote processing at the first time; through data monitoring of the on-site LNG liquid adding station, the storage station and the like, the running state of the equipment can be checked in real time, and maintenance is arranged in 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 (8)
1. The intelligent LNG loading/unloading skid-mounted control system comprises a diffusing pipeline and a purging pipeline, and is characterized in that the diffusing pipeline and the purging pipeline are communicated with a tank car gas phase outlet and a tank car liquid phase outlet, the tank car gas phase outlet is communicated with a storage tank gas phase port through a pressurization pipeline, the tank car liquid phase outlet is communicated with the storage tank liquid phase port through an unloading pipeline and a loading pipeline respectively, and the pressurization pipeline is communicated with the unloading pipeline; install gaseous phase determine module and pressure boost control assembly on the pressure boost pipeline, tank wagon liquid phase export is installed liquid phase determine module and flowmeter (2), unloads and is installed the determine module and unload control assembly on the pipeline of unloading, installs the loading control assembly on the loading pipeline, gaseous phase determine module, pressure boost control assembly, liquid phase determine module, flowmeter (2), the determine module that unloads, the control assembly that unloads and the loading control assembly all are connected with the switch board.
2. The intelligent LNG loading/unloading skid-mounted control system of claim 1, wherein the pressurization pipeline comprises a tank gas phase branch, a tank car gas phase branch and a liquid phase pressurization branch, the tank car gas phase port is communicated with the tank gas phase port through the tank gas phase branch, the tank car gas phase branch is communicated with the tank car gas phase branch, the tank car gas phase branch is communicated with the liquid phase pressurization branch through the unloading pressurizer, and the liquid phase pressurization branch is respectively communicated with the unloading pipeline and the tank car liquid phase outlet; and the gas phase branch of the storage tank is provided with a gas phase detection assembly, and the gas phase branch of the storage tank, the tank car gas phase branch and the liquid phase pressurization branch are respectively provided with a pressurization control assembly.
3. The intelligent LNG loading/unloading skid control system of claim 2, wherein the gas phase detection assembly comprises a gas phase outlet pressure sensor and a gas phase outlet temperature sensor, the gas phase outlet pressure sensor and the gas phase outlet temperature sensor being installed between the storage tank gas phase branch and the tanker gas phase outlet; the pressurization control assembly comprises a tank car pressurization valve (5), a liquid phase pressurization valve (6) and a storage tank pressurization valve (7), the tank car pressurization valve (5) is installed on a tank car gas phase branch path, the liquid phase pressurization valve (6) is installed on a liquid phase pressurization branch path, and the storage tank pressurization valve (7) is installed on a storage tank gas phase branch path; and the gas-phase outlet pressure sensor, the gas-phase outlet temperature sensor, the tank car pressurization valve (5), the liquid-phase pressurization valve (6) and the storage tank pressurization valve (7) are all connected with the control cabinet.
4. The intelligent LNG loading/unloading skid-mounted control system of claim 1, wherein the liquid phase detection assembly comprises a liquid phase outlet pressure sensor and a liquid phase outlet temperature sensor, the liquid phase outlet pressure sensor and the liquid phase outlet temperature sensor are installed between the liquid phase outlet of the tank car and the unloading pipeline and the loading pipeline, and the liquid phase outlet pressure sensor and the liquid phase outlet temperature sensor are both connected with the control cabinet.
5. The intelligent LNG loading/unloading skid-mounted control system according to claim 1, wherein the unloading pipeline is provided with a cryogenic pump (1), the unloading detection assembly comprises a cryogenic pump inlet pressure sensor, a cryogenic pump outlet pressure sensor and a cryogenic pump outlet temperature sensor, the cryogenic pump inlet pressure sensor is arranged at a cryogenic pump inlet, and the cryogenic pump outlet pressure sensor and the cryogenic pump outlet temperature sensor are arranged at a cryogenic pump outlet in sequence; the unloading control assembly comprises an unloading valve (4), and the unloading valve (4) is arranged between the unloading pipeline and the liquid phase port of the storage tank; the cryogenic pump (1), the cryogenic pump inlet pressure sensor, the cryogenic pump outlet temperature sensor and the unloading valve (4) are connected with the control cabinet.
6. The intelligent LNG loading/unloading skid-mounted control system according to claim 1, wherein the loading control assembly comprises a loading valve (3), the loading valve (3) is installed on a loading pipeline, and the loading valve is connected with the control cabinet.
7. The intelligent LNG loading/unloading skid control system of claim 1, 3, 4, 5 or 6, the device is characterized in that a master control PLC is arranged in the control cabinet and is respectively connected with the flowmeter and an upper computer, the master control PLC is respectively connected with a gas phase outlet temperature sensor and a gas phase outlet pressure sensor in the gas phase detection assembly, a tank car pressurization valve (5), a liquid phase pressurization valve (6) and a storage tank pressurization valve (7) in the pressurization control assembly, a liquid phase outlet pressure sensor and a liquid phase outlet temperature sensor in the liquid phase detection assembly, a low-temperature pump inlet pressure sensor, a low-temperature pump outlet pressure sensor and a low-temperature pump outlet temperature sensor in the unloading detection assembly, an unloading valve in the unloading control assembly and a loading valve in the loading control assembly, and the master control PLC is connected with the low-temperature pump (1) through a frequency converter.
8. The intelligent LNG loading/unloading skid-mounted control system according to claim 7, wherein the tank car pressurization valve (5), the storage tank pressurization valve (7), the liquid phase pressurization valve (6), the loading valve (3) and the unloading valve (4) are all pneumatic control valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121086021.1U CN215215735U (en) | 2021-05-20 | 2021-05-20 | Intelligent LNG loading/unloading skid-mounted control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121086021.1U CN215215735U (en) | 2021-05-20 | 2021-05-20 | Intelligent LNG loading/unloading skid-mounted control system |
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| Publication Number | Publication Date |
|---|---|
| CN215215735U true CN215215735U (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121086021.1U Active CN215215735U (en) | 2021-05-20 | 2021-05-20 | Intelligent LNG loading/unloading skid-mounted control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN215215735U (en) |
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2021
- 2021-05-20 CN CN202121086021.1U patent/CN215215735U/en active Active
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