An automated sampling system for anhydrous hydrogen fluoride

Abstract

This utility model discloses an automated sampling system for anhydrous hydrogen fluoride, including a sealed sampling cabinet and a sampling robot. The sealed sampling cabinet is equipped with multiple samplers for filling sampling bottles with the drug. Each sampler has a feeding pipe connected to its top, and the other end of the feeding pipe extends outward through the side wall of the sealed sampling cabinet and connects to the production pipeline. A lifting platform for installing sampling bottles is located below each sampler. The side of the sealed sampling cabinet has an automatic opening and closing door for the robot to retrieve and place sampling bottles into the cabinet. This system ensures a safe and reliable sampling process, avoids safety accidents such as anhydrous hydrogen fluoride leakage, improves sampling efficiency, reduces the risk of manual operation, and enhances sampling accuracy.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment, specifically to an automated sampling system for anhydrous hydrogen fluoride. Background Technology

[0002] Anhydrous hydrogen fluoride is a highly corrosive, toxic, and volatile hazardous chemical. It is a strong oxidizing agent that readily reacts with air to release fumes. Sampling of anhydrous hydrogen fluoride is crucial in chemical production and quality testing, but traditional manual sampling methods pose significant safety risks, potentially causing injury to operators, and also making it difficult to guarantee the accuracy and consistency of the samples. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses an automated sampling system for anhydrous hydrogen fluoride. This system ensures a safe and reliable sampling process, avoids safety accidents such as anhydrous hydrogen fluoride leakage, improves sampling efficiency, reduces the risks of manual operation, and enhances sampling accuracy.

[0004] An automated sampling system for anhydrous hydrogen fluoride includes a sealed sampling cabinet and a sampling robot. The sealed sampling cabinet contains multiple samplers for filling sampling bottles with the drug. Each sampler has a feeding pipe connected to its top, and the other end of the feeding pipe extends outward through the side wall of the sealed sampling cabinet and connects to a production pipeline. A lifting platform for installing sampling bottles is located below each sampler. The side of the sealed sampling cabinet has an automatic opening and closing door for the robot to retrieve and place sampling bottles into the cabinet.

[0005] Preferably, the sampler includes a mounting base, with a liquid intake port at the top of the mounting base, a sampling needle and an exhaust needle at the bottom of the mounting base, and an exhaust port communicating with the exhaust needle on the side of the mounting base.

[0006] Preferably, the sampler is equipped with a visual recognition system.

[0007] Preferably, the sealed sampling cabinet is provided with a perforated partition, and the sampler is installed on the partition.

[0008] Preferably, the area above the partition is the pretreatment area of ​​the sealed sampling cabinet, and the area below the partition is the filling area of ​​the sealed sampling cabinet.

[0009] Preferably, a gas alarm is installed in the pretreatment area, and the gas alarm is communicatively connected to the switching valve.

[0010] Preferably, a cooler is provided in the pretreatment zone.

[0011] Preferably, the filling area is equipped with fluorescent lamps and a purge plate.

[0012] Preferably, the sampling system further includes a tray for holding sampling bottles, the tray having a bracket for fixing the sampling bottles, the upper surface of the bracket having mounting holes, and the bottom of the tray having a positioning groove for fixing to the lifting platform.

[0013] Preferably, the side of the sealed sampling cabinet is also provided with a manually operated door, which is located outside the automatic door.

[0014] Beneficial effects

[0015] 1. This utility model ensures the safety of the sampling process through an on-site sealed sampling cabinet, which can effectively prevent the leakage of anhydrous hydrogen fluoride during the sampling process and ensure the safety of operators and the surrounding environment.

[0016] 2. The combination of samplers, visual recognition systems, and robots improves sampling efficiency and accuracy, and reduces the risks associated with manual operation.

[0017] 3. The door-within-a-door design, which combines an automatic door with a manually operated door on the outside, can effectively save installation space and improve maintenance convenience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of the sealed sampling cabinet of this utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of the sealed sampling cabinet of this utility model;

[0021] Figure 3 This is a schematic diagram of the sampler structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the tray structure in this utility model; Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] This utility model discloses a method such as Figure 1-4 The automated sampling system for anhydrous hydrogen fluoride shown is modular in design and consists of three main modules: a sampling robot module, a sealed sampling cabinet, and a software control platform.

[0025] All components of the sampling system are installed in a sealed sampling cabinet, which is capable of preventing HF gas leakage. The sealed sampling cabinet is made of 304 stainless steel with PFA lining or anti-corrosion powder coating. The design dimensions are 2000(D)×1200(W)×2200(H)mm, and the sampling area has a viewing window.

[0026] The sealed sampling cabinet is divided into two independent areas: the upper sample pretreatment area and the lower filling area. The two areas are separated by a partition (3). The pretreatment area mainly includes sample pretreatment and utility valves; the filling area mainly includes a sampler (5), a lifting platform (6), and a vision recognition system (4).

[0027] The partition (3) is an open-type partition. The purpose of the opening is to maintain the temperature balance inside the cabinet and to cover the entire area during purging. The sampler (5) is fixed to the partition (3) by the mounting base (5-3). The upper end of the mounting base (5-3) extends above the partition (3) and is connected to the feed pipe (2) through the liquid inlet (5-1). The lower part of the mounting base (5-3) extends to the filling area. A longer sampling needle (5-5) and a shorter exhaust needle (5-4) are set at the lower end of the mounting base (5-3). Anhydrous hydrogen fluoride is filled into the sampling bottle through the sampling needle (5-3), and excess gas in the sampling bottle is discharged through the exhaust needle (5-4). An exhaust port (5-2) is set on the side of the mounting base, and the exhaust port (5-2) is connected to the exhaust needle (5-4).

[0028] The sealed sampling cabinet is equipped with an automatic temperature control system. The temperature control measures include a 2P refrigeration air conditioner and additional coolers (7) on the left and right sides of the cabinet. These coolers are scroll tube coolers. The overall insulation thickness of the cabinet is 75mm, with a polyurethane insulation layer in the middle. The purpose is to ensure that the temperature inside the sampling cabinet is lower than the vaporization temperature of AHF, to prevent the AHF temperature from rising and increasing the vaporization volume, to avoid leakage risks, and to ensure the freshness of the samples. A PT100 temperature sensor made of corrosion-resistant material is installed inside the cabinet.

[0029] The sealed sampling cabinet is designed with a front-side door, with the pretreatment area on top. It is designed as a normally closed double door with a manual lock. The filling area is below, designed as an automatically opening and closing door (8). This automatically opening and closing door is a PLC-controlled door, opening outwards, with switch output nodes and a manual opening and closing button. The door size is similar to the size of the sampling tray, and the design should not be too large to avoid heat exchange with the outside. It has a viewing window. When designing the filling area, the ease of maintenance of the lifting platform should be fully considered. It can be designed as a door within a door, with the main door being a normally closed manual door (9) and the smaller door being an automatic PLC-controlled door with a manual opening and closing button. All doors are designed with 75mm thick insulation.

[0030] One HF alarm (1) is installed on the top of the cabinet. When the alarms in the cabinet are alarmed (i.e., all are in alarm state), an automatic shut-off signal is output to the on-site switch valve, and an alarm reminder is given on the operation platform so that the operator can be informed in time. A manual shut-off valve is installed on the outside of the sealed sampling cabinet.

[0031] The sampling cabinet integrates a visual recognition system located in the filling area to record each sampling process in real time. The design viewpoint is intended to cover the entire process of all six sampling needles. Video data can be stored in a database and displayed in real-time on the software control interface. The visual recognition system is made of corrosion-resistant materials.

[0032] The sampling tray (10) measures 350 (W) * 200 (D) * 120 (H) mm. The tray contains a U-shaped bracket (11) for fixing the sample. The top of the bracket has mounting holes for the sampling bottles, and the sides are open for cushioning, shock absorption, and venting. 250ml, LG45 PFA sample bottles are used for sampling. Throughout the sampling process, cold and fresh conditions are maintained to ensure the samples are not contaminated or spoiled during storage. Cold and fresh conditions are maintained through: temperature control within the sampling cabinet, ice addition to the sampling bottles, and electronic refrigeration during robot transport. The design weight is ≤10KG (including the sample and 100ml of ice water). This weight is designed to accommodate the load-bearing capacity of the sampling robot's gripper.

[0033] The sampling bottle has a volume of 250ml, is made of PFA, and meets the standard GL45. Laboratory personnel pre-fill the bottle with 100ml of ice-water mixture. The robot carries the sampling bottle containing the ice-water mixture to the sampling cabinet to collect approximately 25-33g of AHF.

[0034] The lifting platform uses a screw-type lifting mechanism, with four lifting units connected to a synchronous motor via a linkage mechanism. The load capacity is ≥60KG. The top of the lifting platform is designed as a stainless steel platform, incorporating a tray mounting bracket and limit switches. The lower surface of the tray has positioning grooves for fixing to the mounting bracket.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An automated sampling system for anhydrous hydrogen fluoride, characterized in that, It includes a sealed sampling cabinet and a sampling robot; the sealed sampling cabinet is equipped with multiple samplers (5) for filling sampling bottles with medicine, and each sampler (5) is connected to a feeding pipe (2) at the top. The other end of the feeding pipe (2) passes through the side wall of the sealed sampling cabinet and is connected to the production pipeline; a lifting platform (6) for installing sampling bottles is provided below the sampler (5), and an automatic opening and closing door (8) is provided on the side of the sealed sampling cabinet for the robot to take and put sampling bottles into the sealed sampling cabinet.

2. An automated sampling system for anhydrous hydrogen fluoride according to claim 1, wherein, The sampler includes a mounting base (5-3), with a liquid sampling port (5-1) above the mounting base (5-3), a sampling needle (5-5) and an exhaust needle (5-4) below the mounting base (5-3), and an exhaust port (5-2) communicating with the exhaust needle (5-4) on the side of the mounting base (5-3).

3. An automated sampling system for anhydrous hydrogen fluoride as claimed in claim 1, wherein, The sampler is equipped with a visual recognition system (4).

4. An automated sampling system for anhydrous hydrogen fluoride as defined in claim 1, wherein, The sealed sampling cabinet is equipped with a perforated partition (3), and the sampler (5) is installed on the partition (3).

5. An automated sampling system for anhydrous hydrogen fluoride according to claim 4, wherein, The area above the partition (3) is the pretreatment area of ​​the sealed sampling cabinet, and the area below the partition (3) is the filling area of ​​the sealed sampling cabinet.

6. An automated sampling system of anhydrous hydrogen fluoride according to claim 5, characterized in that, A gas alarm (1) is installed in the pretreatment area, and the gas alarm (1) is communicatively connected to the switch valve.

7. The automated sampling system for anhydrous hydrogen fluoride according to claim 5, characterized in that, A cooler (7) is installed in the pretreatment area.

8. An automated sampling system for anhydrous hydrogen fluoride according to claim 5, characterized in that, The filling area is equipped with fluorescent lamps and a purge plate.

9. The automated sampling system for anhydrous hydrogen fluoride according to claim 1, characterized in that, The sampling system also includes a tray (10) for holding sampling bottles. The tray (10) is provided with a bracket (11) for fixing the sampling bottles. The upper surface of the bracket (11) is provided with mounting holes, and the bottom of the tray is provided with a positioning groove for fixing to the lifting platform.

10. An automated sampling system for anhydrous hydrogen fluoride according to claim 1, characterized in that, The sealed sampling cabinet is also equipped with a manually operated door (9) on its side, which is located outside the automatic door.

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