A non-sensing monitoring LPG cylinder filling system

Abstract

The present application provides a non-contact monitoring LPG cylinder filling system, comprising a filling machine, a non-contact radio frequency reader and an electronic tag arranged at the bottom of the LPG cylinder; the bottom of the LPG cylinder is placed on the non-contact radio frequency reader; the non-contact radio frequency reader is communicatively connected with the filling machine; the filling machine comprises a box body; a filling pipeline arranged in the box body; an electric control system arranged in the box body; the filling pipeline comprises a filling pipeline and a return air pipeline; the filling pipeline comprises a liquid inlet, a filter, a flow meter, a temperature transmitter, a first solenoid valve, a pressure transmitter and a filling gun muzzle; the return air pipeline comprises a one-way valve and a second solenoid valve; the flow meter, the temperature transmitter, the first solenoid valve, the pressure transmitter and the second solenoid valve are all electrically connected to the electric control system; the non-contact radio frequency reader obtains the information recorded in the electronic tag and sends it to the electric control system, the electric control system performs verification and check, and after passing the verification, controls the above-mentioned solenoid valve to inflate the cylinder and collects information such as pressure and temperature in the filling pipeline.

Description

Technical Field

[0001] The present application relates to the technical field of liquefied gas filling, and in particular to a non-sensing monitoring LPG cylinder filling system. Background Art

[0002] At present, there are two main ways to supervise the filling of liquefied petroleum gas cylinders: 1. Visually check the inspection mark on the bottleneck before filling, and use a scale to measure during the filling process. This method is not efficient, and often misses and mischecks occur. Weighing with a scale will also result in lifting the bottle for filling, stepping on the scale for filling, etc. 2. Nail a unique QR code or RFID tag (ceramic, glazed porcelain, enamel, etc. labels can be selected) on each liquefied gas cylinder as its identity. Before filling, the operator scans the QR code label on the liquefied gas cylinder with a handheld device to verify its legitimacy. Then put it on the scale for filling and measurement. However, battery life issues and handheld device failures will seriously affect the use cycle of handheld devices, and the use of handheld devices also reduces the filling efficiency. Therefore, it is necessary to provide a solution to improve the filling efficiency and the accuracy of the filling amount. Summary of the invention

[0003] The purpose of this application is to provide a non-sensing monitoring LPG cylinder filling system to achieve the technical effect of improving the filling efficiency and the accuracy of the filling amount.

[0004] The embodiment of the present application provides a non-contact supervision LPG cylinder filling system, including a filling machine, a non-contact radio frequency reader and an electronic tag arranged at the bottom of the LPG cylinder; the bottom of the LPG cylinder is placed on the non-contact radio frequency reader; the non-contact radio frequency reader is communicatively connected with the filling machine; the filling machine includes a box body; a filling pipeline arranged in the box body; an electric control system arranged in the box body; the filling pipeline includes a filling pipeline and a return air pipeline; the filling pipeline includes a liquid inlet, a filter, a flow meter, a temperature transmitter, a first solenoid valve, a pressure transmitter and a filling gun nozzle; the first end of the filter is connected to the filling gun nozzle; the second end of the filter is connected to the first end of the flow meter; the first end of the flow meter is connected The two ends are connected to the first end of the first solenoid valve; the second end of the first solenoid valve is connected to the filling gun nozzle; the temperature transmitter is arranged on the pipeline between the second end of the flow meter and the first end of the first solenoid valve; the pressure transmitter is arranged on the pipeline between the second end of the first solenoid valve and the filling gun nozzle; the return air pipeline includes a one-way valve and a second solenoid valve; the input end of the one-way valve is connected to the filling gun nozzle; the output end of the one-way valve is connected to the first end of the second solenoid valve; the second end of the second solenoid valve is connected to the first end of the flow meter; the flow meter, the temperature transmitter, the first solenoid valve, the pressure transmitter, and the second solenoid valve are all electrically connected to the electronic control system.

[0005] Furthermore, the electronic control system includes a controller; a radio frequency transceiver module connected to the controller; a display connected to the controller; an IC card reader connected to the controller; a keyboard connected to the controller; the flow meter, the temperature transmitter, the first solenoid valve, the pressure transmitter, and the second solenoid valve are all connected to the controller.

[0006] Furthermore, the electronic control system also includes a voice prompt device connected to the controller.

[0007] Furthermore, the box body includes a first shell, a second shell and a partition plate; the filling pipeline is arranged in the first shell; the electric control system is arranged in the second shell; and the partition plate is connected between the first shell and the second shell.

[0008] Furthermore, the non-contact monitoring LPG cylinder filling system also includes: a background management system connected to the electronic control system.

[0009] Furthermore, the electronic tag includes an outer shell, an inner shell, an inlay placement layer and a foam adhesive layer; the outer shell is provided with a groove; the inner shell, the inlay placement layer and the foam adhesive layer are arranged in the groove, and from the bottom of the groove upward, the inlay placement layer, the inner shell and the foam adhesive layer are arranged in sequence.

[0010] Furthermore, the inner shell is made of metal-resistant material.

[0011] Furthermore, the instant noodle glue layer is arc-shaped.

[0012] Furthermore, the filling machine also includes a filling gun detachably connected to the filling gun muzzle; and the box body is provided with a bracket for placing the filling gun.

[0013] The beneficial effects that can be achieved by the present application are: the electronic tag is set at the bottom of the LPG cylinder, which increases the scanning space, and the electronic tag is not easily damaged. When inflating, the bottom of the LPG cylinder can be placed on the non-conductive radio frequency reader to obtain the information in the electronic tag, and then the information in the electronic tag can be checked by the electronic control system to complete the inspection of the LPG cylinder, thereby improving the detection efficiency. During the inflation process, the temperature and pressure of the filling pipeline can be detected in real time by the temperature transmitter and the pressure transmitter, so that the filling can be stopped when the temperature or pressure in the filling pipeline is abnormal. During the filling process, statistics are taken through the flow meter, which improves the accuracy of the filling amount and avoids the problem of overfilling or underfilling of the bottle due to human influences such as "lifting the can" and "stepping on the scale" when using the weighing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the structure of a non-sensing monitoring LPG cylinder filling system provided in an embodiment of the present application;

[0016] Figure 2 A schematic diagram of a topological structure of an electric control system provided in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of a filling pipeline structure provided in an embodiment of the present application;

[0018] Figure 4 A schematic diagram of an electronic tag installation position provided in an embodiment of the present application;

[0019] Figure 5 A schematic diagram of the structure of an electronic tag provided in an embodiment of the present application.

[0020] Icons: 10-non-sensing monitoring LPG cylinder filling system; 100-filling machine; 110-filling pipeline; 111-liquid inlet; 112-filter; 113-flow meter; 114-first solenoid valve; 115-filling gun muzzle; 116-check valve; 117-second solenoid valve; 120-electronic control system; 121-controller; 122-temperature transmitter; 1221-temperature gauge; 123-pressure transmitter; 1231-pressure gauge; 124-RF receiver Module; 125-display; 126-IC card reader; 127-keyboard; 128-voice prompt device; 130-first shell; 140-second shell; 150-partition plate; 160-filling gun; 170-bracket; 200-inductive RFID reader; 300-LPG cylinder; 310-electronic tag; 311-outer shell; 312-inner shell; 313-inlay placement layer; 314-foam rubber layer; 400-backend management system. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 A schematic diagram of the structure of a non-sensing monitoring LPG cylinder filling system provided in an embodiment of the present application; Figure 2 A schematic diagram of a topological structure of an electric control system provided in an embodiment of the present application; Figure 3 A schematic diagram of a filling pipeline structure provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of an electronic tag provided in an embodiment of the present application.

[0024] like Figure 1 As shown, the non-contact monitoring LPG cylinder filling system 10 provided in the embodiment of the present application includes a filling machine 100, a non-contact radio frequency reader 200 and an electronic tag 310 arranged at the bottom of the LPG cylinder 300; the bottom of the LPG cylinder 300 is placed on the non-contact radio frequency reader 200; the non-contact radio frequency reader 200 is communicatively connected with the filling machine 100; the filling machine 100 includes a box body; a filling pipeline 110 arranged in the box body; an electronic control system 120 arranged in the box body; the filling pipeline 110 includes a filling pipeline and a return air pipeline; the filling pipeline includes a liquid inlet 111, a filter 112, a flow meter 113, a temperature transmitter 122, a first solenoid valve 114, a pressure transmitter 123 and a filling gun 115; the first end of the filter 112 is connected to the filling gun 115; the second end of the filter 112 is connected to the first end of the flow meter 113 connection; the second end of the flow meter 113 is connected to the first end of the first solenoid valve 114; the second end of the first solenoid valve 114 is connected to the filling gun nozzle 115; the temperature transmitter 122 is arranged on the pipeline between the second end of the flow meter 113 and the first end of the first solenoid valve 114; the pressure transmitter 123 is arranged on the pipeline between the second end of the first solenoid valve 114 and the filling gun nozzle 115; the return air pipeline includes a one-way valve 116 and a second solenoid valve 117; the input end of the one-way valve 116 is connected to the filling gun nozzle 115; the output end of the one-way valve 116 is connected to the first end of the second solenoid valve 117; the second end of the second solenoid valve 117 is connected to the first end of the flow meter 113; the flow meter 113, the temperature transmitter 122, the first solenoid valve 114, the pressure transmitter 123, and the second solenoid valve 117 are all electrically connected to the electronic control system 120.

[0025] In one embodiment, the box body includes a first shell 130, a second shell 140 and a partition plate 150; the filling pipeline 110 is arranged in the first shell 130; the electric control system 120 is arranged in the second shell 140; and the partition plate 150 is connected between the first shell 130 and the second shell 140. The filling pipeline 110 in the first shell 130 and the electric control system 120 in the second shell 140 are isolated by the partition plate 150, which improves the safety during the filling process.

[0026] In one embodiment, the filling gun 160 of the filling machine 100 is detachably connected to the gas filling gun port of the filling pipeline 110. A bracket 170 for placing the filling gun 160 is also provided on the box of the filling machine 100.

[0027] In order to facilitate checking the temperature and pressure of the filling pipeline 110 , the temperature transmitter 122 may be connected to the temperature gauge 1221 , and the pressure transmitter 123 may be connected to the pressure gauge 1231 .

[0028] like Figure 2 As shown, in one embodiment, the electric control system 120 includes a controller 121; a radio frequency transceiver module 124 connected to the controller 121; a display 125 connected to the controller 121; an IC card reader 126 connected to the controller 121; a keyboard 127 connected to the controller 121; the flow meter 113, the temperature transmitter 122, the first solenoid valve 114, the pressure transmitter 123, and the second solenoid valve 117 are all connected to the controller 121. The radio frequency transceiver module 124 is used to receive the data information obtained by the non-contact radio frequency reader 200; the IC card reader 126 is used to read the user's IC card information to realize the function of accounting or pre-charge consumption; the display 125 is used to display the data information during the filling process, and the keyboard 127 includes a start key, a confirmation key, an information query key, a return key, etc. After the controller 121 receives the electronic tag 310 information obtained by the non-contact radio frequency reader 200 through the radio frequency transceiver module 124, it compares it with the user information and displays the comparison result on the display 125.

[0029] The controller 121 can be a single chip microcomputer, a PLC controller, etc. The temperature transmitter 122 and the flow meter 113 are connected to the controller 121 through the RS485 interface; the IC card reader 126 is connected to the controller 121 through the RS232 interface; the background management system 400 is connected to the controller 121 through the RS422 interface; the display 125 is connected to the controller 121 through the TTL serial port. The keyboard 127, the radio frequency transceiver module 124, and the solenoid valve can be connected to the controller 121 through the I / O port.

[0030] Exemplarily, the electronic tag 310 at the bottom of the LPG cylinder 300 carries a unique identification code and can record information such as the cylinder's production date, capacity, number of fillings, filling pressure, and filling temperature; the contactless RFID reader 200 is rectangular and has dimensions of 320mm*320mm*10mm (length*width*height). When inflating, place the bottom of the LPG cylinder 300 on the non-contact radio frequency reader 200; use the filling gun 160 to connect the filling gun 160 port 115 with the filling port of the cylinder; after the connection is completed, the user presses the start key on the keyboard 127, and the non-contact radio frequency reader 200 reads the unique identification code, production date, capacity, filling times and other information in the electronic tag 310 and sends it to the controller 121 through the radio frequency transceiver module 124 of the electronic control system 120; the user places the IC card on the IC card reader 126, and the IC card reader 126 sends the user information recorded in the IC card to the controller 121; the controller 121 analyzes whether the cylinder meets the filling requirements based on the unique identification code, production date, filling times and user information recorded in the IC card of the cylinder. If the cylinder does not meet the filling requirements (i.e., the cylinder is unqualified), the electronic control system 120 automatically terminates the gas filling process. If the cylinder meets the filling requirements, the electronic control system 120 first opens the second solenoid valve 117, so that the gas LPG in the cylinder returns to the filling system through the one-way valve 116, first reduces the existing pressure in the cylinder, and facilitates the LPG to enter the cylinder. When the pressure transmitter 123 detects that the pressure in the cylinder drops to the set value, the electronic control system 120 closes the second solenoid valve 117, opens the first solenoid valve 114, and starts to inflate the cylinder. During the filling process, the temperature transmitter 122, the pressure transmitter 123 and the flow meter 113 collect the temperature, pressure and LPG flow rate in the filling process in real time and display it on the display 125. When the LPG flow rate reaches the capacity of the cylinder, the electronic control system 120 automatically closes the second solenoid valve 117. After the filling is completed, the user can use the confirmation key, information query key, return key, etc. on the keyboard 127 to query the historical filling information.

[0031] In order to remind the user in time during the inflation process, the electronic control system provided in the embodiment of the present application also includes a voice prompt device 128 connected to the controller (for example, a voice player can be set on the filling machine). When the electronic control system analyzes and compares the information in the electronic tag 310 and finds that the cylinder is unqualified, the voice prompt device 128 can play the following content: "The cylinder is unqualified and does not meet the filling requirements. Please replace the cylinder." When the inflation is completed, the voice prompt device 128 can play the following content: "Inflation is complete, please take away the cylinder in time."

[0032] In order to facilitate the management of gas cylinders, the non-sensing supervision LPG cylinder filling system 10 provided by the present application also includes a background management system 400, which includes a cloud server, a mobile terminal, etc. The controller 121 sends the data information of the filling process to the mobile terminal through the cloud server every time the filling process is completed, so that the user can analyze, query and count the cylinders.

[0033] like Figure 3 As shown, the filling pipeline 110 also includes a first stop valve, a second stop valve and a safety valve; when the filling pipeline 110 has abnormal conditions such as ice, the pressure in the filling pipeline 110 reaches a set value, and the safety valve will trip to reduce the pressure in the filling pipeline 110 and ensure the safety of the filling pipeline 110.

[0034] like Figure 4 As shown, in order to ensure the readability of the electronic tag 310 when it is attached to the metal surface and facilitate the labeling, the electronic tag 310 provided in the embodiment of the present application includes an outer shell 311, an inner shell 312, an inlay placement layer 313 and a foam adhesive layer 314; the outer shell 311 is provided with a groove; the inner shell 312, the inlay placement layer 313 and the foam adhesive layer 314 are arranged in the groove, and from the bottom of the groove upward, they are the inlay placement layer 313, the inner shell 312 and the foam adhesive layer 314. The inner shell 312 is lined with anti-metal material, and the foam adhesive layer 314 is arc-shaped, so that the electronic tag 310 can be completely attached to the bottom of the cylinder. The electronic tag 310 is arranged at the bottom of the cylinder, and the scanning space is larger, and it is not easy to damage the cylinder. A silk screen is also provided on the outer shell 311 to facilitate dynamic supervision of the circulation link.

[0035] In summary, the embodiment of the present application provides a non-contact monitoring LPG cylinder filling system, including a filling machine, a non-contact radio frequency reader and an electronic tag arranged at the bottom of the LPG cylinder; the bottom of the LPG cylinder is placed on the non-contact radio frequency reader; the non-contact radio frequency reader is connected to the filling machine for communication; the filling machine includes a box; a filling pipeline arranged in the box; an electronic control system arranged in the box; the filling pipeline includes a filling pipeline and a return air pipeline; the filling pipeline includes a liquid inlet, a filter, a flow meter, a temperature transmitter, a first solenoid valve, a pressure transmitter and a filling gun nozzle; the first end of the filter is connected to the filling gun nozzle; the second end of the filter is connected to the second end of the flow meter The first end of the flowmeter is connected to the first end of the first solenoid valve; the second end of the first solenoid valve is connected to the filling gun nozzle; the temperature transmitter is arranged on the pipeline between the second end of the flowmeter and the first end of the first solenoid valve; the pressure transmitter is arranged on the pipeline between the second end of the first solenoid valve and the filling gun nozzle; the return air pipeline includes a one-way valve and a second solenoid valve; the input end of the one-way valve is connected to the filling gun nozzle; the output end of the one-way valve is connected to the first end of the second solenoid valve; the second end of the second solenoid valve is connected to the first end of the flowmeter; the flowmeter, the temperature transmitter, the first solenoid valve, the pressure transmitter, and the second solenoid valve are all electrically connected to the electronic control system. The above method improves the filling efficiency and the accuracy of the filling amount.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A non-sensing monitoring LPG cylinder filling system, characterized in that: include: A filling machine, a non-contact radio frequency reader and an electronic tag arranged at the bottom of an LPG cylinder; the bottom of the LPG cylinder is placed on the non-contact radio frequency reader; the non-contact radio frequency reader is in communication connection with the filling machine; the filling machine comprises a box; a filling pipeline arranged in the box; and an electronic control system arranged in the box; The electronic tag comprises an outer shell, an inner shell, an inlay layer and a foam adhesive layer; the outer shell is provided with a groove; the inner shell, the inlay layer and the foam adhesive layer are arranged in the groove, and the inlay layer, the inner shell and the foam adhesive layer are arranged in sequence from the bottom of the groove upward; The filling pipeline includes a filling pipeline and a return air pipeline; the filling pipeline includes a liquid inlet, a filter, a flow meter, a temperature transmitter, a first solenoid valve, a pressure transmitter and a filling gun nozzle; the first end of the filter is connected to the filling gun nozzle; the second end of the filter is connected to the first end of the flow meter; the second end of the flow meter is connected to the first end of the first solenoid valve; the second end of the first solenoid valve is connected to the filling gun nozzle; the temperature transmitter is arranged on the pipeline between the second end of the flow meter and the first end of the first solenoid valve; the pressure transmitter is arranged on the pipeline between the second end of the first solenoid valve and the filling gun nozzle; The return air pipeline includes a one-way valve and a second solenoid valve; the input end of the one-way valve is connected to the filling gun nozzle; the output end of the one-way valve is connected to the first end of the second solenoid valve; the second end of the second solenoid valve is connected to the first end of the flow meter; The flow meter, the temperature transmitter, the first solenoid valve, the pressure transmitter, and the second solenoid valve are all electrically connected to the electronic control system; The electronic control system includes a controller; a radio frequency transceiver module connected to the controller; a display connected to the controller; an IC card reader connected to the controller; a keyboard connected to the controller, and a voice prompt device connected to the controller; the flow meter, the temperature transmitter, the first solenoid valve, the pressure transmitter, and the second solenoid valve are all connected to the controller.

2. The non-sensing monitoring LPG cylinder filling system according to claim 1 is characterized in that: The box body includes a first shell, a second shell and a partition plate; the filling pipeline is arranged in the first shell; the electric control system is arranged in the second shell; and the partition plate is connected between the first shell and the second shell.

3. The non-sensing monitoring LPG cylinder filling system according to claim 1 is characterized in that: The non-contact monitoring LPG cylinder filling system also includes: a background management system connected to the electronic control system.

4. The non-sensing monitoring LPG cylinder filling system according to claim 1 is characterized in that: The inner shell is made of anti-metal material.

5. The non-sensing monitoring LPG cylinder filling system according to claim 1 is characterized in that: The foam adhesive layer is arc-shaped.

6. The non-sensing monitoring LPG cylinder filling system according to claim 1 is characterized in that: The filling machine also includes a filling gun detachably connected to the filling gun nozzle; and the box body is provided with a bracket for placing the filling gun.

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