A drug detection tube resistance measuring tool

Abstract

The utility model relates to a gas detection technical field, concretely is a kind of detection tube resistance determination frock, including shell, pressure gauge, buffer tank, vacuum pump, flowmeter and emergency safety air inlet valve, vacuum pump is fixedly connected in the shell, pressure gauge is fixedly connected in the shell and is located in the side of vacuum pump, buffer tank is fixedly connected in the shell and is located in the side of pressure gauge, emergency safety air inlet valve is fixedly connected in the shell front end, flowmeter is fixedly connected in the shell front end, gas path connector is fixedly connected in the shell front and rear ends, active carbon drying bottle and detection tube are detachably connected with the gas path connector on the frock outside, vacuum pump, buffer tank, electronic pressure gauge, flowmeter and detection tube are connected by pipeline, form closed detection gas path, the utility model is integrated detection device, with multiple protection mechanism, while having small volume, correction time is short, and measurement accurate and the like advantages.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to a tooling for measuring the resistance of a gas detection tube. Background Technology

[0002] As a key consumable in the field of chemical detection, the detection tube is widely used in scenarios such as chemical leak accidents and environmental safety monitoring. The accurate measurement of its internal resistance pressure value is an important production link to ensure the effective gas extraction of the detector and the accurate detection of toxic agents. The traditional detection tube resistance measurement system is mainly composed of a series of dispersed equipment such as a vacuum pump, a mercury U-shaped manometer, a red water capillary flow meter, a buffer tank, and an activated carbon drying tower. This traditional device has significant drawbacks: First, its components are numerous and loosely arranged, requiring about two square meters of work surface, resulting in extremely low space utilization and hindering the intensive management of the production site.

[0003] Meanwhile, the equipment calibration process before measurement is extremely cumbersome and complicated. For example, when using the bubbling method to calibrate the rotor flowmeter and then indirectly calibrate the capillary, the height of the liquid column in the U-tube must be read multiple times under a specific gas flow rate and the average value must be taken. The repeated calibration error of the same capillary must be controlled within 5%. The whole process takes about an hour, which seriously restricts production efficiency. As the core measuring element, the mercury U-tube manometer is easily affected by factors such as air bubbles on the tube wall and oil stains, resulting in blurred vision and difficulty in interpretation. There is also a safety risk of accidental leakage of mercury due to airflow impact or vibration, which poses a threat to the health of operators and the environment.

[0004] Therefore, there is an urgent need to develop a tool for measuring the resistance of a drug detection tube to solve the above problems. Utility Model Content

[0005] This utility model is a tooling for measuring the resistance of a poison detection tube. By integrating a pressure gauge, a buffer tank, a vacuum pump, and a flow meter into the tooling, this utility model achieves the characteristics of small size, high efficiency, and accurate measurement, effectively solving the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for measuring the resistance of a detection tube, comprising a housing, a pressure gauge, a buffer tank, a vacuum pump, a flow meter, and an emergency safety inlet valve. The vacuum pump is fixedly mounted inside the housing, the pressure gauge is fixedly mounted to one side of the vacuum pump inside the housing, the buffer tank is fixedly mounted to one side of the pressure gauge inside the housing, the emergency safety inlet valve is fixedly connected to the front end of the housing, the flow meter is fixedly connected to the front end of the housing, and gas line connectors are fixedly connected to both ends of the housing. An activated carbon drying bottle and a detection tube are detachably connected to the outside of the device via the gas line connectors. The vacuum pump, buffer tank, electronic pressure gauge, flow meter, and detection tube are connected via pipelines to form a closed detection gas path.

[0007] Preferably, the front end of the housing has a vacuum pump viewing window and a pressure gauge viewing window, the rear end of the housing has gas connectors for the inlet and outlet of the activated carbon drying bottle, and the front end of the housing has a gas connector for the detection tube test interface.

[0008] Preferably, the emergency safety air intake valve is a pagoda ball valve.

[0009] Preferably, the external pipeline of the pressure gauge is divided into two paths via a tee, wherein one path of the external pipeline of the pressure gauge is bolted and fixed to the flow meter, and the other path of the external pipeline of the pressure gauge is bolted and fixed to the test interface of the drug detection tube.

[0010] Preferably, one side of the buffer tank is fixedly connected to the air inlet at the rear end of the shell, and the other side of the buffer tank is bolted and fixed to the flow meter and the emergency safety air inlet valve respectively through a tee. An internal threaded pagoda connector is bolted and fixed between the buffer tank and the emergency safety air inlet valve pipeline, and a pad is snapped and fixed between the buffer tank and the shell.

[0011] Preferably, the vacuum pump is bolted to the exhaust port at the rear end of the housing via a pipe.

[0012] Preferably, the pressure gauge is rechargeable and has a display screen and a touch screen. The pressure gauge can adjust the pressure in the pipeline in conjunction with other devices in the tooling according to the set value.

[0013] Preferably, the housing portion corresponding to the vacuum pump position and the pressure gauge position is provided with a double-sided silicone protective coil for snap-fit ​​fixation.

[0014] Preferably, the bottom of the housing is equipped with suction cup feet.

[0015] Beneficial effects

[0016] This utility model provides a tooling for measuring the resistance of a drug detection tube, which has the following advantages compared with the existing technology:

[0017] This utility model proposes an integrated resistance measuring fixture for drug detection tubes. The resistance measuring device reduces the required workbench space from 2 square meters to only 0.2 square meters, making it compact, space-saving, and easy to move. In addition, the device has a simple calibration process and a short calibration time that can be completed in a few seconds. Compared with traditional equipment, the calibration time has been significantly reduced from about 1 hour. Combined with the optimized operation process, the overall production efficiency has been increased by more than 50%.

[0018] This invention features a high-precision electronic digital display pressure gauge that completely replaces the mercury U-shaped pressure gauge, which is prone to misreading and poses a risk of contamination. The measurement results are clearly and intuitively displayed on a color LCD screen, supporting flexible switching between multiple units such as Pa and kPa. This fundamentally eliminates human reading errors and mercury hazards, ensuring the accuracy and reliability of the data.

[0019] This fixture features multiple protection mechanisms. An integrated emergency safety air inlet valve allows for rapid manual pressure relief in case of system overpressure, protecting the equipment. The entire gas system operates in a closed environment, effectively preventing potential toxic gas leaks and injuries during testing. A specially designed activated carbon drying tower or toxic gas treatment device interface purifies the exhaust gas, preventing direct environmental pollution from toxic substances. Furthermore, the device's portable design and simple operation significantly reduce the skill requirements and workload for operators. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the main left side structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 5 This is a top view of the internal structure of this utility model.

[0026] In the picture:

[0027] 1. Housing, 2. Pressure gauge, 3. Buffer tank, 4. Vacuum pump, 5. Flow meter

[0028] 6. Emergency safety air intake valve; 7. Air intake interface; 8. Exhaust interface; 9. Poison detection tube test interface; 10. Internal thread pagoda connector; 11. Spacer block; 12. Double-sided silicone protective coil. Detailed Implementation

[0029] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. The technical solutions of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0030] Please see Figure 1-5 This utility model provides a technical solution:

[0031] This utility model tooling includes a housing, a pressure gauge, a buffer tank, a vacuum pump, a flow meter, and an emergency safety air inlet valve. The vacuum pump is snapped into and fixed inside the housing, and the pressure gauge is snapped into and fixed to one side of the vacuum pump. The buffer tank is snapped into and fixed to one side of the pressure gauge. The emergency safety air inlet valve and the flow meter are fixedly connected to the front end of the housing. Gas connectors are fixedly connected to both ends of the housing for easy connection to external devices via pipelines. The external devices include an activated carbon drying bottle and a detection tube. In this utility model, the vacuum pump, buffer tank, electronic pressure gauge, flow meter, and detection tube are connected via pipelines to form a closed detection gas path, facilitating gas detection.

[0032] The housing of this utility model mainly consists of a base plate, a back plate, and an outer shell. The base plate and the back plate are fixed perpendicularly to each other, and the outer shell covers the base plate and the back plate, forming a closed or semi-closed protective structure. Multiple suction cup feet are installed at the bottom of the housing for stable placement on a workbench. Stainless steel handles with rubber sleeves are installed on both sides or the top of the housing for easy handling.

[0033] The vacuum pump of this utility model is mounted on the base plate via a vacuum pump mounting bracket, with its position corresponding to the vacuum pump viewing window. The pressure gauge is mounted on the base plate via two pressure gauge brackets, and its display screen faces the pressure gauge viewing window on the housing. The buffer tank is mounted at the corner formed by the back plate and the base plate via a buffer tank bracket and a buffer tank mounting bracket. All fasteners are secured with bolts and nuts to ensure the stability of the equipment during movement and operation.

[0034] This utility model's tooling incorporates a vacuum pump, a buffer tank, an electronic pressure gauge, and a flow meter to form a stable detection gas path. The buffer tank's inlet is connected via a pipe to an external threaded tee connector located on the back panel. The buffer tank's outlet is divided into two paths via a tee connector: the first path connects to an emergency safety inlet valve; the second path connects via a pipe to the flow meter's inlet. The flow meter's outlet is also divided into two paths via a tee connector: one path connects to the pressure gauge's detection end; the other path connects to a detection tube test interface located at the front of the housing. The vacuum pump's suction port connects via a pipe to another external exhaust port located on the back panel. All pipe connections are preferably secured with silicone flexible tubing to ensure airtightness.

[0035] In some embodiments, the emergency safety air intake valve is a pagoda ball valve.

[0036] In some embodiments, the gas line connector is a pagoda connector.

[0037] In some embodiments, the pressure gauge is an electronic digital display pressure gauge, specifically the DP580 pressure gauge, which features high adjustment accuracy and can be adjusted in different units such as Pa and kPa.

[0038] Example 1

[0039] In use, the activated carbon drying bottle is connected to the air inlet and exhaust ports on the back panel via a silicone hose. If drying is not required, these two ports can be directly short-connected with a short hose. Then, the detection tube is connected to the detection tube test port on the front panel via a hose. Power is turned on, and the color LCD screen of the electronic digital pressure gauge illuminates. Pressing the calibration button automatically completes the pressure zeroing calibration. The user can select the display unit through the interface. The vacuum pump is turned on, and then the pagoda ball valve is closed. The gas flow rate is precisely adjusted to the required process value (e.g., liters / minute) by adjusting the flow meter knob. The pressure drop generated by the gas flowing through the detection tube and the entire detection gas path is detected in real time by the electronic digital pressure gauge and displayed on the screen; this reading is the resistance value of the detection tube. After the test, the pagoda ball valve is opened first to restore the system to normal pressure, and then the vacuum pump is turned off.

[0040] Example 2

[0041] In this invention, the emergency safety air intake valve can be manually opened in case of abnormal overpressure in the system, allowing outside air to quickly enter the gas path, balancing the pressure, and protecting the precision pressure gauge and vacuum pump. The entire gas path is a closed system, preventing possible leakage of toxic gases during testing. An activated carbon drying bottle connected to the interface effectively adsorbs toxic substances in the exhaust gas, avoiding environmental pollution. The use of an electronic digital display pressure gauge completely eliminates the mercury contamination risk associated with mercury pressure gauges.

[0042] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. For those skilled in the art to which the present invention pertains, simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered as falling within the scope of patent protection determined by the submitted claims.

Claims

1. A tooling for measuring the resistance of a poison detection tube, characterized in that, The device includes a housing, a pressure gauge, a buffer tank, a vacuum pump, a flow meter, and an emergency safety air inlet valve. The vacuum pump is snapped into the housing, the pressure gauge is snapped into one side of the vacuum pump, and the buffer tank is snapped into one side of the pressure gauge. The emergency safety air inlet valve and the flow meter are fixedly connected to the front end of the housing. Gas line connectors are fixedly connected to both ends of the housing. An activated carbon drying bottle and a detection tube are detachably connected to the outside of the device via the gas line connectors. The vacuum pump, buffer tank, electronic pressure gauge, flow meter, and detection tube are connected by pipelines to form a closed detection gas path.

2. The resistance measuring fixture for the detection tube according to claim 1, characterized in that: The front end of the housing has a vacuum pump viewing window and a pressure gauge viewing window. The rear end of the housing has gas connectors for the inlet and outlet of the activated carbon drying bottle, respectively. The front end of the housing has a gas connector for the detection tube test interface.

3. The resistance measuring fixture for the detection tube according to claim 1, characterized in that: The emergency safety air intake valve is a pagoda ball valve.

4. The resistance measuring fixture for the detection tube according to claim 2, characterized in that: The external pipeline of the pressure gauge is divided into two paths via a tee. One path of the external pipeline of the pressure gauge is bolted and fixed to the flow meter, and the other path of the external pipeline of the pressure gauge is bolted and fixed to the test interface of the poison detection tube.

5. The resistance measuring fixture for the detection tube according to claim 2, characterized in that: One side of the buffer tank is fixedly connected to the air inlet at the rear end of the shell, and the other side of the buffer tank is bolted and fixed to the flow meter and the emergency safety air inlet valve respectively through a tee. An internal thread pagoda connector is bolted and fixed between the buffer tank and the emergency safety air inlet valve pipeline, and a pad is snapped and fixed between the buffer tank and the shell.

6. The resistance measuring fixture for the detection tube according to claim 2, characterized in that: The vacuum pump is bolted to the exhaust port at the rear end of the housing via a pipe.

7. The resistance measuring fixture for the detection tube according to claim 1, characterized in that: The pressure gauge is rechargeable and has a display screen and a touch screen. The pressure gauge can adjust the pressure in the pipeline in conjunction with other devices in the tooling according to the set value.

8. The resistance measuring fixture for the detection tube according to claim 1, characterized in that: The housing portions corresponding to the vacuum pump and pressure gauge positions are secured with double-sided silicone protective coils.

9. The resistance measuring fixture for the detection tube according to claim 1, characterized in that: The bottom of the housing is equipped with suction cup feet.

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