Electrical control data acquisition system of gas adsorption experiment device

Abstract

The utility model relates to the technical field of offshore oil equipment, and particularly discloses an electrical control data acquisition system of a gas adsorption experimental device, which comprises a PLC (programmable logic controller) control system, a paperless recorder acquisition system, a supercharger, a buffer tank, an adsorption tank and a gas storage tank, the supercharger is connected with a natural gas inlet, the buffer tank is communicated with the supercharger, and the adsorption tank is communicated with the gas storage tank. The buffer tank, the adsorption tank and the gas storage tank are mutually communicated through a first pipeline, the gas storage tank is simultaneously communicated with the natural gas inlet and the supercharger through a second pipeline, the first pipeline is connected with an emptying port, and the adsorption tank is connected with a water cooling system. The timeliness, the data storage amount and the storage period of the collected data are obviously improved, and the testing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore oil equipment, in particular to an electrical control data acquisition system for a gas adsorption experiment device. Background Art

[0002] For the experimental test device of natural gas gas adsorption effect, there are many experimental detection instruments required, a large amount of experimental data, a short acquisition period requirement, a long data recording and storage period, an automated and intelligent process requirement, and it needs to meet the explosion-proof requirement. The traditional experimental test device for natural gas gas adsorption effect simply relies on the PLC to complete the data acquisition, and it is difficult to meet the experimental test requirements in terms of the timeliness of the acquired data, the data storage capacity and the storage period, resulting in a poor experimental test effect.

[0003] Therefore, it is necessary to propose an electrical control data acquisition system for a gas adsorption experiment device to improve the experimental test effect. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the experimental test effect of the existing experimental test device for natural gas gas adsorption effect is poor due to simply relying on the PLC, and now an electrical control data acquisition system for a gas adsorption experiment device is provided.

[0005] The technical solution of the utility model is as follows:

[0006] An electrical control data acquisition system for a gas adsorption experiment device includes a PLC control system and a paperless recorder acquisition system, and also includes a booster, a buffer tank, an adsorption tank and a gas storage tank. The booster is connected with a natural gas inlet, the buffer tank is communicated with the booster, the buffer tank, the adsorption tank and the gas storage tank are mutually communicated through a first pipeline, the gas storage tank is simultaneously communicated with the natural gas inlet and the booster through a second pipeline, the first pipeline is connected with an exhaust port, and the adsorption tank is connected with a water cooling system;

[0007] The paperless recorder acquisition system includes an inlet water temperature transmitter, a drain water temperature transmitter, an inlet water electromagnetic flowmeter, an inlet gas temperature transmitter, an inlet gas pressure transmitter, an inlet gas mass flowmeter, an exhaust gas temperature transmitter, an exhaust gas pressure transmitter, an exhaust gas mass flowmeter, an upper layer temperature transmitter, a middle layer temperature transmitter and a lower layer temperature transmitter;

[0008] The PLC control system includes a water path electric heater, a water circulation centrifugal pump, an exhaust vacuum pump, an inlet electric valve and an exhaust electric valve.

[0009] Further, the water cooling system includes a coolant inlet pipe and a coolant outlet pipe. The coolant inlet pipe is connected to the top of the adsorption tank, and the coolant outlet pipe is connected to the bottom of the adsorption tank. The water circuit electric heater is connected to the coolant inlet pipe, and the water circulation centrifugal pump is connected to both the water circuit electric heater and the coolant inlet pipe.

[0010] Further, the inlet water temperature transmitter and the inlet water electromagnetic flowmeter are arranged on the coolant inlet pipe, and the drain water temperature transmitter is arranged on the coolant outlet pipe.

[0011] Further, the upper layer temperature transmitter, the middle layer temperature transmitter, and the lower layer temperature transmitter are all installed on the adsorption tank.

[0012] Further, the intake air temperature transmitter, the intake air pressure transmitter, and the intake air mass flowmeter are installed on the first pipeline between the buffer tank and the adsorption tank.

[0013] Further, the exhaust gas temperature transmitter, the exhaust gas pressure transmitter, and the exhaust gas mass flowmeter are installed on the first pipeline between the adsorption tank and the exhaust port.

[0014] Further, the paperless recorder acquisition system is connected to the PLC control system through Ethernet.

[0015] Further, the exhaust vacuum pump is installed on the first pipeline at the exhaust port.

[0016] Further, the intake air electric valve is located at the intake port of the adsorption tank, and the exhaust air electric valve is located at the exhaust port of the adsorption tank.

[0017] For the electrical control data acquisition system of the gas adsorption experiment device of the present utility model, the PLC control system is responsible for receiving the data collected by the paperless recorder acquisition system and controlling the actuators such as the water circuit electric heater, the water circulation centrifugal pump, the exhaust vacuum pump, the intake air electric valve, and the exhaust air electric valve in the experiment device. The paperless recorder acquisition system is responsible for collecting the signals of multiple types of pressure, temperature, and flow transmitters and transmitting the signals to the PLC control system. Compared with the traditional technology, for the electrical control data acquisition system of the gas adsorption experiment device of the present technical solution, the data acquisition time limit is no more than 1 second, 19-channel signals are collected simultaneously, the maximum acquisition capacity of the system can meet the simultaneous acquisition of 48-channel signals, the current storage capacity of the experiment device is not less than 16G, and the continuous storage period is not less than 30 days. There are obvious improvements in the timeliness of data acquisition, the data storage capacity, and the storage period, improving the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the structural diagram of the present utility model;

[0019] Figure 2 is the system flow chart of the present utility model.

[0020] Reference numerals: 1, PLC control system; 2, paperless recorder acquisition system; 3, booster; 4, buffer tank; 5, adsorption tank; 6, gas storage tank; 7, natural gas inlet; 8, first pipeline; 9, second pipeline; 10, exhaust port; 11, inlet water temperature transmitter; 12, outlet water temperature transmitter; 13, inlet water electromagnetic flowmeter; 14, inlet air temperature transmitter; 15, inlet air pressure transmitter; 16, inlet air mass flowmeter; 17, exhaust gas temperature transmitter; 18, exhaust gas pressure transmitter; 19, exhaust gas mass flowmeter; 20, upper layer temperature transmitter; 21, middle layer temperature transmitter; 22, lower layer temperature transmitter; 23, water circuit electric heater; 24, water circulation centrifugal pump; 25, exhaust vacuum pump; 26, inlet air electric valve; 27, exhaust air electric valve; 28, coolant inlet pipe; 29, coolant outlet pipe. Specific implementation mode

[0021] In order to make the technical means, technical features, utility model purpose and technical effects achieved by the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0022] Embodiment 1:

[0023] As Figure 1 and Figure 2 shown, this embodiment provides an electrical control data acquisition system for a gas adsorption experiment device, including a PLC control system 1 and a paperless recorder acquisition system 2, and also including a booster 3, a buffer tank 4, an adsorption tank 5 and a gas storage tank 6. The booster 3 is connected to a natural gas inlet 7 through a pipeline. The buffer tank 4 is communicated with the booster 3. The buffer tank 4, the adsorption tank 5 and the gas storage tank 6 are communicated with each other through a first pipeline 8. The gas storage tank 6 is simultaneously communicated with the natural gas inlet 7 and the booster 3 through a second pipeline 9. The first pipeline 8 is connected with an exhaust port 10. The adsorption tank 5 is connected with a water cooling system. The paperless recorder acquisition system 2 includes an inlet water temperature transmitter 11, an outlet water temperature transmitter 12, an inlet water electromagnetic flowmeter 13, an inlet air temperature transmitter 14, an inlet air pressure transmitter 15, an inlet air mass flowmeter 16, an exhaust gas temperature transmitter 17, an exhaust gas pressure transmitter 18, an exhaust gas mass flowmeter 19, an upper layer temperature transmitter 20, a middle layer temperature transmitter 21 and a lower layer temperature transmitter 22. The PLC control system 1 includes a water circuit electric heater 23, a water circulation centrifugal pump 24, an exhaust vacuum pump 25, an inlet air electric valve 26 and an exhaust air electric valve 27.

[0024] Preferably, the water cooling system includes a coolant inlet pipe 28 and a coolant outlet pipe 29. The coolant inlet pipe 28 communicates with the top of the adsorption tank 5, and the coolant outlet pipe 29 communicates with the bottom of the adsorption tank 5. The waterway electric heater 23 communicates with the coolant inlet pipe 28, and the water circulation centrifugal pump 24 communicates with both the waterway electric heater 23 and the coolant inlet pipe 28.

[0025] Preferably, the inlet water temperature transmitter 11 and the inlet water electromagnetic flowmeter 13 are arranged on the coolant inlet pipe 28, and the drain water temperature transmitter 12 is arranged on the coolant outlet pipe 29.

[0026] Preferably, the upper layer temperature transmitter 20, the middle layer temperature transmitter 21, and the lower layer temperature transmitter 22 are all installed on the adsorption tank 5. The number of the upper layer temperature transmitter 20, the middle layer temperature transmitter 21, and the lower layer temperature transmitter 22 is not limited to one, and the number is not fixed either. According to the specific usage situation, multiple ones can be installed in sequence from the top to the bottom of the adsorption tank 5.

[0027] Preferably, the intake air temperature transmitter 14, the intake air pressure transmitter 15, and the intake air mass flowmeter 16 are installed on the first pipeline 8 between the buffer tank 4 and the adsorption tank 5.

[0028] Preferably, the exhaust gas temperature transmitter 17, the exhaust gas pressure transmitter 18, and the exhaust gas mass flowmeter 19 are installed on the first pipeline 8 between the adsorption tank 5 and the exhaust port 10.

[0029] Preferably, the paperless recorder acquisition system 2 is connected to the PLC control system 1 through Ethernet. When connecting, devices such as switches, computers, and human-machine interfaces can be used in cooperation with Ethernet.

[0030] Preferably, the exhaust vacuum pump 25 is installed on the first pipeline 8 at the exhaust port 10.

[0031] Preferably, the intake air electric valve 26 is located at the intake port of the adsorption tank 5, and the exhaust air electric valve 27 is located at the exhaust port of the adsorption tank 5.

[0032] It should be noted that since the components and equipment used in this application are all prior arts, for their specific installation methods and specific models selected, those skilled in the art can decide according to the specific on-site situation. The connection methods between pipelines also belong to the common knowledge of those skilled in the art, and will not be elaborated here.

[0033] The PLC control system 1 is responsible for receiving the data collected by the paperless recorder acquisition system 2, and controlling the actuators such as the water-electric heater 23, the water circulation centrifugal pump 24, the exhaust vacuum pump 25, the intake electric valve 26, and the exhaust electric valve 27 in the experimental device. The paperless recorder acquisition system 2 is responsible for collecting the signals of multiple types of pressure, temperature, and flow transmitters, and transmitting the signals to the PLC control system 1. For the gas adsorption experimental device electrical control data acquisition system of this technical solution, the data acquisition timeliness is not greater than 1 second, and 19-channel signals are collected simultaneously. The maximum acquisition capacity of this system can meet the simultaneous acquisition of 48-channel signals. The current storage capacity of this experimental device is not less than 16G, and the continuous storage period is not less than 30 days. There have been obvious improvements in the data acquisition timeliness, data storage capacity, and storage period, improving the test effect.

[0034] During operation, the intake adsorption process operates as follows: The PLC first controls the intake electric valve 26 of the adsorption tank 5 to gradually open, starting the intake process. According to the mass flowmeter flow feedback collected by the paperless recorder, the opening and closing of the valve are controlled to achieve the control of the intake flow rate of the adsorption tank 5. At this time, the gas entering the adsorption tank 5 begins to be adsorbed by the adsorbent. During the adsorption reaction, the temperature and pressure in the tank will increase. The PLC controls the opening of the cooling water circuit according to the set temperature. The paperless recorder data acquisition system real-time collects the temperature and pressure changes, with a collection cycle of 1s. After the intake flow rate of the flowmeter gradually decreases to zero, the intake electric valve 26 of the adsorption tank 5 is closed, and the adsorption process is completed.

[0035] The outlet desorption process operates as follows: The PLC controls the exhaust electric valve 27 of the adsorption tank 5 to gradually open, starting the outlet process. According to the mass flowmeter flow feedback collected by the paperless recorder, the opening and closing of the valve are controlled to achieve the control of the outlet flow rate of the adsorption tank 5. At this time, the gas in the adsorption tank 5 begins to desorb from the adsorbent. To increase the desorption speed, the PLC controls the electric heater to work, raising the water circulation temperature to the set target value. The paperless recorder data acquisition system real-time collects the temperature and pressure changes, with a collection cycle of 1s. After the detection values of the outlet mass flowmeter and the outlet pressure transmitter are close to zero, the vacuum pump is started to create a negative pressure in the tank, increasing the desorption amount. After the vacuum cycle is repeated several times and the pressure in the tank no longer rises, the desorption process is completed.

[0036] The above is only the preferred embodiment of the present invention and is not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention shall fall within the technical scope of the present invention.

Claims

1. An electrical control data acquisition system for a gas adsorption experiment device, comprising a PLC control system (1) and a paperless recorder acquisition system (2), characterized in that: It also includes a supercharger (3), a buffer tank (4), an adsorption tank (5) and a gas storage tank (6). The supercharger (3) is connected to a natural gas inlet (7). The buffer tank (4) is communicated with the supercharger (3). The buffer tank (4), the adsorption tank (5) and the gas storage tank (6) are mutually communicated through a first pipeline (8). The gas storage tank (6) is simultaneously communicated with the natural gas inlet (7) and the supercharger (3) through a second pipeline (9). The first pipeline (8) is connected with an exhaust port (10). The adsorption tank (5) is connected with a water cooling system; The paperless recorder acquisition system (2) includes an inlet water temperature transmitter (11), a drain water temperature transmitter (12), an inlet water electromagnetic flowmeter (13), an inlet gas temperature transmitter (14), an inlet gas pressure transmitter (15), an inlet gas mass flowmeter (16), an exhaust gas temperature transmitter (17), an exhaust gas pressure transmitter (18), an exhaust gas mass flowmeter (19), an upper layer temperature transmitter (20), a middle layer temperature transmitter (21) and a lower layer temperature transmitter (22); The PLC control system (1) includes a waterway electric heater (23), a water circulation centrifugal pump (24), an exhaust vacuum pump (25), an inlet gas electric valve (26) and an exhaust gas electric valve (27).

2. The electrical control data acquisition system for a gas adsorption experiment device according to claim 1, characterized in that: The water cooling system includes a coolant inlet pipe (28) and a coolant outlet pipe (29). The coolant inlet pipe (28) is communicated with the top of the adsorption tank (5). The coolant outlet pipe (29) is communicated with the bottom of the adsorption tank (5). The waterway electric heater (23) is communicated with the coolant inlet pipe (28). The water circulation centrifugal pump (24) is simultaneously communicated with the waterway electric heater (23) and the coolant inlet pipe (28).

3. An electrical control data acquisition system for a gas adsorption experiment device according to claim 2, characterized in that: The inlet water temperature transmitter (11) and the inlet water electromagnetic flowmeter (13) are arranged on the coolant inlet pipe (28). The drain water temperature transmitter (12) is arranged on the coolant outlet pipe (29).

4. The electrical control data acquisition system of a gas adsorption experiment device according to claim 1, characterized in that: The upper layer temperature transmitter (20), the middle layer temperature transmitter (21) and the lower layer temperature transmitter (22) are all installed on the adsorption tank (5).

5. The electrical control data acquisition system of a gas adsorption experiment device according to claim 1, characterized in that: The inlet gas temperature transmitter (14), the inlet gas pressure transmitter (15) and the inlet gas mass flowmeter (16) are installed on the first pipeline (8) between the buffer tank (4) and the adsorption tank (5).

6. The electrical control data acquisition system of a gas adsorption experiment device according to claim 1, characterized in that: The exhaust gas temperature transmitter (17), the exhaust gas pressure transmitter (18) and the exhaust gas mass flowmeter (19) are installed on the first pipeline (8) between the adsorption tank (5) and the exhaust port (10).

7. The electrical control data acquisition system of a gas adsorption experiment device according to claim 1, characterized in that: The paperless recorder acquisition system (2) is connected to the PLC control system (1) through Ethernet.

8. The electrical control data acquisition system of a gas adsorption experiment device according to claim 1, characterized in that: The exhaust vacuum pump (25) is installed on the first pipeline (8) at the exhaust port (10).

9. The electrical control data acquisition system for a gas adsorption experiment device according to claim 1, characterized in that: The inlet gas electric valve (26) is located at the inlet of the adsorption tank (5), and the exhaust gas electric valve (27) is located at the exhaust port of the adsorption tank (5).

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