Automatic liquid chlorine cylinder filling system
The automated liquid chlorine cylinder filling system uses compressed air instead of chlorine gas for pressure testing and leak detection. Combined with automated control and sensor monitoring, it solves the problems of chlorine leakage and employee poisoning, and achieves a safe and reliable liquid chlorine filling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI KECY CHEMICAL CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, chlorine cylinders are generally pressure tested and leak checked before filling, which poses a risk of chlorine leakage. Furthermore, employees are on-site throughout the process, posing a risk of poisoning.
An automated liquid chlorine cylinder filling system is adopted, using compressed air instead of chlorine for pressure testing and leak testing. The system controls the pressure testing, vacuuming, and filling processes through an automated program, and uses pressure sensors and weighing sensors for real-time monitoring and control.
It eliminated the risk of toxic gas leaks, reduced the direct contact time between personnel and hazardous media, improved the leak test pass rate, and prevented safety accidents.
Smart Images
Figure CN224498187U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquefied gas filling technology, and in particular to an automated filling system for liquid chlorine cylinders. Background Technology
[0002] Liquid chlorine is a toxic liquefied gas widely used in chemical, pharmaceutical, and water treatment industries. Its cylinder filling process has extremely high safety requirements. In the traditional liquid chlorine cylinder filling process, pressure testing and leak testing are key steps to ensure the sealing of the filling system. The start-up, shutdown, and status monitoring of the filling operation also rely heavily on manual intervention.
[0003] However, in the existing technology, chlorine gas is generally used for pressure testing and leak testing before filling the cylinder with liquid chlorine, which poses a risk of chlorine leakage. At the same time, employees are on-site to carry out the operation throughout the process, which poses a certain risk of poisoning to the employees. Utility Model Content
[0004] The purpose of this invention is to solve the problems in the existing technology where chlorine gas is commonly used for pressure testing and leak detection before filling steel cylinders with liquid chlorine, which poses a risk of chlorine leakage. At the same time, the operation is carried out on-site by employees, which poses a certain risk of poisoning to the employees. The proposed invention is an automated liquid chlorine cylinder filling system.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automated liquid chlorine cylinder filling system, including a fixed frame, a control panel rotatably mounted on the top of the fixed frame, a weighing device connected to the bottom of the fixed frame, a pressure testing and gas supply mechanism installed inside the weighing device, a cylinder clamp provided on one side of the fixed frame, a filling copper pipe connected to one end of the cylinder clamp, the filling copper pipe being connected to an external liquid chlorine pipeline, the cylinder clamp being used to connect the filling copper pipe to the cylinder to be filled, and the weighing device being used to place the cylinder to be filled and weigh the cylinder.
[0006] Preferably, the weighing device includes a pressure plate, a telescopic rod, a load cell, a base plate, and a support frame. The base plate is fixedly connected to the top surface of the support frame, and the load cell is installed between the bottom surface of the pressure plate and the top surface of the base plate.
[0007] Preferably, the telescopic rods are located at the four corners of the top surface of the base plate, and the two ends of the telescopic rods are fixedly connected to the pressure plate and the base plate, respectively.
[0008] Preferably, the pressure testing and air supply mechanism includes a compressed air tank, a return air pipe, an air supply pipe, an air inlet pipe, and a filter. The return air pipe is fixedly connected to one side of the compressed air tank, and an automatic valve is installed in the middle of the return air pipe.
[0009] Preferably, one end of the air intake pipe is connected to the end of the compressed air tank, and the filter is installed in the middle of the air intake pipe.
[0010] Preferably, one end of the gas supply pipe is fixedly connected to the other end of the compressed gas tank, an automatic valve two is installed in the middle of the gas supply pipe, a pressure sensor is provided on one side of the automatic valve two, the pressure sensor is fixedly connected to the gas supply pipe, and a branch pipe one and a branch pipe two are fixedly connected to the side wall of the automatic valve two.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, by using compressed air instead of traditional chlorine for pressure testing and leak detection, the risk of personnel poisoning caused by toxic gas leaks is eliminated from the source; by using automated programs to control key links such as pressure testing, vacuuming, and filling, personnel can be evacuated from the site in stages, reducing the direct contact time with hazardous media; and by using a pressure sensor to monitor pressure in real time and a weighing sensor to accurately control the quantity, safety accidents caused by overfilling or leakage are avoided.
[0013] 2. In this utility model, the filter in the pressure test air supply mechanism can filter impurities and moisture in the compressed air, avoiding scratches on the sealing surface or corrosion of the pipeline; the multi-point coverage design of the first and second branch pipes ensures comprehensive testing of the sealing area and improves the leak test pass rate. Attached Figure Description
[0014] Figure 1 This utility model presents a three-dimensional structural diagram of an automated liquid chlorine cylinder filling system.
[0015] Figure 2 This utility model presents a structural schematic diagram of the measuring device for an automated liquid chlorine cylinder filling system.
[0016] Figure 3 This utility model presents a structural schematic diagram of the pressure testing and gas supply mechanism of an automated filling system for liquid chlorine cylinders.
[0017] Legend: 1. Fixture; 2. Control panel; 3. Filling copper pipe; 4. Bottle card; 5. Weighing device; 51. Pressure plate; 52. Telescopic rod; 53. Weighing sensor; 54. Base plate; 55. Support frame; 6. Pressure testing and air supply mechanism; 61. Compressed air tank; 62. Return air pipe; 621. Automatic valve one; 63. Air supply pipe; 631. Automatic valve two; 632. Air pressure sensor; 633. Branch pipe one; 634. Branch pipe two; 64. Inlet pipe; 65. Filter. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Example 1: As Figure 1 - Figure 3 As shown, this utility model provides an automated filling system for liquid chlorine cylinders, including a fixed frame 1, a control panel 2 rotatably mounted on the top of the fixed frame 1, a weighing device 5 connected to the bottom of the fixed frame 1, a pressure testing and gas supply mechanism 6 installed inside the weighing device 5, a cylinder clip 4 provided on one side of the fixed frame 1, a filling copper pipe 3 connected to one end of the cylinder clip 4, the filling copper pipe 3 being connected to an external liquid chlorine pipeline, the cylinder clip 4 being used to connect the filling copper pipe 3 to the cylinder to be filled, and the weighing device 5 being used to place the cylinder to be filled and weigh the cylinder.
[0021] The specific settings and functions of this embodiment are described in detail below. The rotating installation design of the control panel 2 can be adapted to different operating angles, making it convenient for operators to input the cylinder tare weight, start / stop the filling program, and check the system status, thereby realizing the issuance of automated control commands for the entire filling process. The weighing device 5 is not only used to place the cylinder to be filled, but its built-in weighing component can monitor the changes in cylinder weight in real time and feed the data back to the control system as the core basis for judging whether the filling has reached the set value, ensuring that the filling amount is accurate and controllable. The pressure testing gas supply mechanism 6 is integrated inside the weighing device 5, providing clean compressed air for the leak testing process, replacing the traditional chlorine pressure testing, reducing the risk of toxic gas leakage from the source. At the same time, it is connected to the filling system through pipelines to realize the directional delivery and recovery of the pressure testing gas. The cylinder card 4 tightly connects the filling copper pipe 3 to the cylinder valve through a mechanical structure to ensure reliable sealing during the filling process. The filling copper pipe 3 serves as a liquid chlorine delivery channel, with one end connected to the external liquid chlorine pipeline and the other end connected to the cylinder through the cylinder card 4 to realize safe transmission of the medium.
[0022] Example 2: Figure 1 - Figure 3As shown, the weighing device 5 includes a pressure plate 51, a telescopic rod 52, a load cell 53, a base plate 54, and a support frame 55. The base plate 54 is fixedly connected to the top surface of the support frame 55. The load cell 53 is installed between the bottom surface of the pressure plate 51 and the top surface of the base plate 54. The telescopic rod 52 is located at the four corners of the top surface of the base plate 54, and both ends of the telescopic rod 52 are fixedly connected to the pressure plate 51 and the base plate 54, respectively. The pressure test air supply mechanism 6 includes a compressed air tank 61, a return air pipe 62, an air supply pipe 63, an air inlet pipe 64, and a filter 65. The return air pipe 62 is fixedly connected to the... On one side of the compressed air tank 61, an automatic valve 621 is installed in the middle of the return air pipe 62. One end of the air inlet pipe 64 is connected to the end of the compressed air tank 61. A filter 65 is installed in the middle of the air inlet pipe 64. One end of the air delivery pipe 63 is fixedly connected to the other end of the compressed air tank 61. An automatic valve 631 is installed in the middle of the air delivery pipe 63. A pressure sensor 632 is installed on one side of the automatic valve 631. The pressure sensor 632 is fixedly connected to the air delivery pipe 63. A branch pipe 633 and a branch pipe 634 are fixedly connected to the side wall of the automatic valve 631.
[0023] The overall implementation achieves the following effects: the weighing sensor 53 accurately detects changes in the weight of the cylinder, converts the weight signal into an electrical signal in real time, and transmits it to the control system; the telescopic rod 52 is installed at the four corners of the base plate 54, which guides and stabilizes the pressure plate 51, avoiding weighing errors caused by cylinder misalignment or shaking during filling; the compressed air tank 61 stores compressed air, providing a stable air source for leak testing; the return air pipe 62 works with the automatic valve 621 to realize the recovery or discharge of gas after pressure testing, avoiding pressure fluctuations caused by direct venting; the air supply pipe 63, the automatic valve 631, and the pressure sensor 632: the automatic valve 631 controls the opening and closing of compressed air entering the filling pipeline, and the pressure sensor 632 monitors the pipeline pressure in real time. When the pressure rises to 0.5MPa, a signal is fed back to the control system, which automatically closes the automatic valve 631 and enters a pressure holding stage for 20 seconds, thus automating the pressure testing process.
[0024] The operation and working principle of this device are as follows: The operator hoists the cylinder to be filled onto the pressure plate 51 of the weighing device 5 and adjusts its position to ensure it is placed stably; the filling copper pipe 3 is connected to the cylinder valve through the cylinder clamp 4, and the tightening device is tightened to ensure a seal; the cylinder tare weight is input into the control panel 2, and the system automatically calculates and displays the target filling weight; the manual filling valve is opened manually, and the "filling start" button is clicked on the control panel 2, and the system enters the automatic process; during the leak test stage: the automatic valve 2 631 is opened, and the clean air in the compressed air tank 61 is delivered to the filling pipeline through the air supply pipe 63, branch pipe 1 633 and branch pipe 2 634, and the air pressure sensor 63... 2. When the monitored pressure reaches 0.5MPa, automatic valve 2 631 closes and maintains pressure for 20 seconds; if the pressure does not drop, the voice system prompts that the pressure test is qualified, and then automatic valve 1 621 opens, and the return air pipe 62 empties the air in the pipeline; during the negative pressure stage: the system controls the packaging negative pressure valve to open, and the cylinder and pipeline are negative pressured to -0.04MPa before closing; during the filling stage: the packaging automatic filling main valve opens, and liquid chlorine enters the cylinder through the filling copper pipe 3, and the weighing sensor 53 provides real-time feedback on the weight change; when the set weight is reached, the system automatically closes the automatic filling valve; the operator closes the cylinder valve, releases the cylinder clamp 4, lifts the cylinder, and completes the filling.
[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An automated filling system for liquid chlorine cylinders, comprising a fixing frame (1), characterized in that: The top of the fixed frame (1) is rotatably mounted with a control panel (2), the bottom of the fixed frame (1) is connected to a measuring device (5), the inside of the measuring device (5) is equipped with a pressure testing and gas supply mechanism (6), a bottle clip (4) is provided on one side of the fixed frame (1), one end of the bottle clip (4) is connected to a filling copper pipe (3), the filling copper pipe (3) is connected to an external liquid chlorine pipeline, the bottle clip (4) is used to connect the filling copper pipe (3) to the steel cylinder to be filled, and the measuring device (5) is used to place the steel cylinder to be filled and weigh the steel cylinder.
2. The automated liquid chlorine cylinder filling system according to claim 1, characterized in that: The weighing device (5) includes a pressure plate (51), a telescopic rod (52), a weighing sensor (53), a base plate (54), and a support frame (55). The base plate (54) is fixedly connected to the top surface of the support frame (55), and the weighing sensor (53) is installed between the bottom surface of the pressure plate (51) and the top surface of the base plate (54).
3. The automated liquid chlorine cylinder filling system according to claim 2, characterized in that: The telescopic rod (52) is set at the four corners of the top surface of the base plate (54), and the two ends of the telescopic rod (52) are fixedly connected to the pressure plate (51) and the base plate (54) respectively.
4. The automated liquid chlorine cylinder filling system according to claim 1, characterized in that: The pressure testing and air supply mechanism (6) includes a compressed air tank (61), a return air pipe (62), an air supply pipe (63), an air inlet pipe (64), and a filter (65). The return air pipe (62) is fixedly connected to one side of the compressed air tank (61), and an automatic valve (621) is installed in the middle of the return air pipe (62).
5. The automated liquid chlorine cylinder filling system according to claim 4, characterized in that: One end of the air intake pipe (64) is connected to the end of the compressed air tank (61), and the filter (65) is installed in the middle of the air intake pipe (64).
6. The automated liquid chlorine cylinder filling system according to claim 5, characterized in that: One end of the gas supply pipe (63) is fixedly connected to the other end of the compressed gas tank (61). An automatic valve two (631) is installed in the middle of the gas supply pipe (63). A pressure sensor (632) is provided on one side of the automatic valve two (631). The pressure sensor (632) is fixedly connected to the gas supply pipe (63). A branch pipe one (633) and a branch pipe two (634) are fixedly connected to the side wall of the automatic valve two (631).