Thiophane online monitoring device with multi-level calibration
By designing a multi-level calibrated online monitoring device for tetrahydrothiophene, and combining components such as a monitoring box, a tetrahydrothiophene monitor, and a probe, multi-level and pressurized monitoring of tetrahydrothiophene is achieved. This solves the problem of insufficient monitoring stability of existing devices under gas flow conditions and improves the accuracy and reliability of monitoring data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU JIAOTONG UNIV INSTR CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-15
AI Technical Summary
Existing online monitoring devices for tetrahydrothiophene lack adaptability to different operating conditions, which affects the accuracy and reliability of monitoring data, especially when the gas flow and concentration fluctuate within the pipeline, resulting in insufficient monitoring stability.
The tetrahydrothiophene online monitoring device, which employs multi-level calibration, includes a combination design of a monitoring box, a tetrahydrothiophene monitor, a probe, a connecting pipe, a sealing part, an electric telescopic rod, a sealing plate, a suction pipe, and a screw pump. This design enables multi-level monitoring, sealing, and pressurization monitoring, reducing errors and improving data accuracy.
Through multi-level calibration, monitoring errors are effectively reduced, the accuracy and reliability of monitoring data are improved, and the practicality and safety of the device are enhanced.
Smart Images

Figure CN224247410U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tetrahydrothiophene monitoring technology, and particularly relates to a multi-level calibrated online tetrahydrothiophene monitoring device. Background Technology
[0002] Tetrahydrothiophene is a sulfur-containing organic compound that is a colorless liquid at room temperature with a strong, pungent odor. It is often added as an odorant to odorless fuels such as natural gas to detect leaks promptly through smell. Devices for monitoring tetrahydrothiophene are mainly used to monitor gas leaks. Common types include electrochemical sensors, infrared sensors, photoionization detectors (PID), as well as portable monitors and fixed online monitoring systems. By monitoring the concentration of tetrahydrothiophene in the air in real time, the safety of gas pipelines, chemical plants, and other locations is ensured, preventing explosions or poisoning accidents.
[0003] Currently, most online monitoring devices for tetrahydrothiophene can only perform basic detection of gas in pipelines and lack design adaptability to different operating conditions. Since the gas in the pipeline is in a flowing state and the gas concentration fluctuates, it may affect the stability of tetrahydrothiophene monitoring, and thus affect the accuracy and reliability of the monitoring data. This needs to be improved. To this end, a multi-level calibrated online monitoring device for tetrahydrothiophene is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a multi-level calibrated online monitoring device for tetrahydrothiophene to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-level calibrated tetrahydrothiophene online monitoring device, comprising a monitoring box, a tetrahydrothiophene monitor disposed on the top of the monitoring box, and a probe disposed at the bottom of the tetrahydrothiophene monitor, characterized in that the probe is disposed inside the monitoring box, a connecting pipe is fixedly connected to one side of the monitoring box, a sealing part is provided on the connecting pipe, an electric telescopic rod is fixedly installed on the side of the sealing part, a sealing plate is slidably disposed on the sealing part, the output shaft end of the electric telescopic rod is fixedly installed to the side of the sealing plate, an exhaust pipe is fixedly connected between the connecting pipe and the monitoring box, and a screw pump is disposed on the exhaust pipe.
[0006] As a further description of the above solution: by setting up a monitoring box, a tetrahydrothiophene monitor, a probe, a connecting pipe, a sealing part, an electric telescopic rod, a sealing plate, an extraction pipe, and a screw pump working together, the tetrahydrothiophene online monitoring device has multi-level monitoring and calibration functions, and can monitor tetrahydrothiophene, seal monitoring, and pressure monitoring, effectively reducing monitoring errors, improving the accuracy and reliability of monitoring data, and is highly practical.
[0007] Preferably, the air outlet end of the air extraction pipe is provided with a valve.
[0008] As a further description of the above solution: after pressurization in the monitoring chamber, the backflow of tetrahydrothiophene gas can be avoided, thereby improving the stability of pressurization monitoring.
[0009] Preferably, a frame is fixedly installed on the top of the monitoring box, the tetrahydrothiophene monitor is snapped onto the frame, an opening is provided on the top of the monitoring box, and the probe is slidably disposed on the opening.
[0010] As a further description of the above solution: the frame and the port are set up to facilitate easy disassembly and assembly of the tetrahydrothiophene monitor and the probe, thereby facilitating the maintenance and repair of both.
[0011] Preferably, the monitoring box is provided with a sealing sleeve at the opening, and the probe size is adapted to the sealing sleeve size.
[0012] As a further description of the above solution: after the probe is inserted into the port, the gap between the port and the probe can be sealed to prevent leakage.
[0013] Preferably, the end of the connecting pipe is provided with a flange.
[0014] As a further description of the above solution: a flange is provided at the end of the connecting pipe to facilitate the overall fixed installation of the device at the end of the gas pipeline for monitoring.
[0015] Preferably, the monitoring box is equipped with an audible and visual alarm on its top.
[0016] As a further description of the above scheme: The top of the monitoring box is equipped with an audible and visual alarm that can issue an audible and visual alarm when the tetrahydrothiophene concentration is higher than a set threshold.
[0017] In summary, compared with the prior art, the beneficial effects of this utility model are as follows: by setting up a monitoring box, a tetrahydrothiophene monitor, a probe, a connecting pipe, a sealing part, an electric telescopic rod, a sealing plate, a gas extraction pipe, and a screw pump working together, this tetrahydrothiophene online monitoring device has multi-level monitoring and calibration functions, and can monitor tetrahydrothiophene, seal monitoring, and pressure monitoring, effectively reducing monitoring errors, improving the accuracy and reliability of monitoring data, and is highly practical. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a structural diagram of the tetrahydrothiophene monitor, probe, and frame of this utility model;
[0020] Figure 3This is a side view of the present invention.
[0021] Figure 4 This is a structural diagram of the air extraction pipe and screw pump of this utility model.
[0022] Legend:
[0023] 1. Monitoring box; 2. Tetrahydrothiophene monitor; 3. Probe; 4. Connecting pipe; 5. Sealing part; 6. Electric telescopic rod; 7. Sealing plate; 8. Extraction pipe; 9. Screw pump; 10. Valve; 11. Frame; 12. Port; 13. Sealing sleeve; 14. Flange; 15. Audible and visual alarm. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-4 This utility model provides a technical solution:
[0026] A multi-level calibrated online monitoring device for tetrahydrothiophene includes a monitoring box 1, a tetrahydrothiophene monitor 2 mounted on top of the monitoring box 1, and a probe 3 mounted on the bottom of the tetrahydrothiophene monitor 2. The probe 3 is located inside the monitoring box 1. A connecting pipe 4 is fixedly connected to one side of the monitoring box 1. A sealing part 5 is provided on the connecting pipe 4. An electric telescopic rod 6 is fixedly installed on the side of the sealing part 5. A sealing plate 7 is slidably mounted on the sealing part 5. The output shaft end of the electric telescopic rod 6 is fixedly installed to the side of the sealing plate 7. An extraction pipe 8 is fixedly connected between the connecting pipe 4 and the monitoring box 1. A screw pump 9 is provided on the extraction pipe 8.
[0027] In use, the device is fixedly installed at the end of the gas pipeline network through the connecting pipe 4, and the gas can enter the monitoring box 1 through the connecting pipe 4;
[0028] The probe 3 at the bottom of the tetrahydrothiophene monitor 2 is installed inside the monitoring box 1 to monitor the tetrahydrothiophene concentration in the box in real time.
[0029] When sealing monitoring is required, the electric telescopic rod 6 works to push the sealing plate 7 on the sealing part 5 to slide and seal the connecting pipe 4. At this time, the monitoring box 1 forms a closed space to monitor the sealing of tetrahydrothiophene without the interference of external gas.
[0030] When the gas concentration is low and pressure monitoring is required, the sealing part 5 is sealed, the screw pump 9 on the gas extraction pipe 8 is activated, the gas in the gas pipeline is extracted and compressed through the connecting pipe 4, and the compressed gas is delivered to the monitoring box 1, so that the pressure in the monitoring box 1 increases and pressure monitoring is achieved.
[0031] This tetrahydrothiophene online monitoring device has multi-level monitoring and calibration functions, and can monitor tetrahydrothiophene, seal monitoring, and pressure monitoring, effectively reducing monitoring errors and improving the accuracy and reliability of monitoring data, making it highly practical.
[0032] A valve 10 is provided at the air outlet of the air extraction pipe 8;
[0033] When the screw pump 9 delivers the gas through the extraction pipe 8 to the monitoring box 1 for pressurization monitoring, the valve 10 at the outlet of the extraction pipe 8 will open under the action of gas pressure, allowing the gas to enter the monitoring box 1 smoothly. When the gas delivery stops, the valve 10 will automatically close, thereby preventing tetrahydrothiophene gas from flowing back into the extraction pipe 8, ensuring the stability of the pressure in the monitoring box 1 during the pressurization monitoring process, and improving the accuracy of the pressurization monitoring.
[0034] A frame 11 is fixedly installed on the top of the monitoring box 1, and the tetrahydrothiophene monitor 2 is snapped onto the frame 11. A passage 12 is opened on the top of the monitoring box 1, and the probe 3 is slidably mounted on the passage 12.
[0035] The frame 11 fixedly installed on the top of the monitoring box 1 is used to snap the tetrahydrothiophene monitor 2. The opening 12 on the top of the monitoring box 1 is used for the probe 3 to slide. When maintenance or repair of the tetrahydrothiophene monitor 2 or the probe 3 is required, the tetrahydrothiophene monitor 2 can be taken out of the frame 11 and the probe 3 can be slid out of the opening 12. This facilitates easy disassembly and assembly of the tetrahydrothiophene monitor 2 and the probe 3, reduces the time and difficulty of maintenance and repair, and improves the maintainability of the device.
[0036] The monitoring box 1 is equipped with a sealing sleeve 13 at the opening 12, and the size of the probe 3 is adapted to the size of the sealing sleeve 13;
[0037] The monitoring box 1 is equipped with a sealing sleeve 13 at the inlet 12, and the size of the probe 3 is compatible with the size of the sealing sleeve 13. When the probe 3 is inserted into the inlet 12, the sealing sleeve 13 will tightly wrap the probe 3 and fill the gap between the probe 3 and the inlet 12, thereby effectively preventing the tetrahydrothiophene gas in the monitoring box 1 from leaking into the external environment through the gap, ensuring the safety and accuracy of the monitoring process, and avoiding the safety hazards that may be caused by gas leakage.
[0038] Flange 14 is provided at both ends of the connecting pipe 4;
[0039] A flange 14 is provided at the end of the connecting pipe 4, which facilitates the overall fixed installation of the device at the end of the gas pipeline for monitoring.
[0040] The monitoring box 1 is equipped with an audible and visual alarm 15 on its top.
[0041] The top of the monitoring box 1 is equipped with an audible and visual alarm 15, which can issue an audible and visual alarm when the tetrahydrothiophene concentration is higher than the set threshold.
[0042] Working principle:
[0043] In use, the device is fixedly installed at the end of the gas pipeline network through the connecting pipe 4, and the gas can enter the monitoring box 1 through the connecting pipe 4;
[0044] The probe 3 at the bottom of the tetrahydrothiophene monitor 2 is installed inside the monitoring box 1 to monitor the tetrahydrothiophene concentration in the box in real time.
[0045] When sealing monitoring is required, the electric telescopic rod 6 works to push the sealing plate 7 on the sealing part 5 to slide and seal the connecting pipe 4. At this time, the monitoring box 1 forms a closed space to monitor the sealing of tetrahydrothiophene without the interference of external gas.
[0046] When the gas concentration is low and pressure monitoring is required, the sealing part 5 is sealed, the screw pump 9 on the gas extraction pipe 8 is activated, the gas in the gas pipeline is extracted and compressed through the connecting pipe 4, and the compressed gas is delivered to the monitoring box 1, so that the pressure in the monitoring box 1 increases and pressure monitoring is achieved.
[0047] This tetrahydrothiophene online monitoring device has multi-level monitoring and calibration functions, and can monitor tetrahydrothiophene, seal monitoring, and pressure monitoring, effectively reducing monitoring errors and improving the accuracy and reliability of monitoring data, making it highly practical.
[0048] in,
[0049] When the screw pump 9 delivers the gas through the extraction pipe 8 to the monitoring box 1 for pressurization monitoring, the valve 10 set at the gas outlet of the extraction pipe 8 will open under the action of gas pressure, allowing the gas to enter the monitoring box 1 smoothly. When the gas delivery stops, the valve 10 will automatically close, thereby preventing tetrahydrothiophene gas from flowing back into the extraction pipe 8, ensuring the stability of the pressure in the monitoring box 1 during the pressurization monitoring process, and improving the accuracy of pressurization monitoring.
[0050] The frame 11 fixedly installed on the top of the monitoring box 1 is used to snap the tetrahydrothiophene monitor 2. The opening 12 on the top of the monitoring box 1 is used for the probe 3 to slide. When the tetrahydrothiophene monitor 2 or the probe 3 needs to be maintained or repaired, the tetrahydrothiophene monitor 2 can be taken out of the frame 11 and the probe 3 can be slid out of the opening 12. This makes it easy to disassemble and assemble the tetrahydrothiophene monitor 2 and the probe 3, reducing the time and difficulty of maintenance and repair, and improving the maintainability of the device.
[0051] The monitoring box 1 is equipped with a sealing sleeve 13 at the inlet 12, and the size of the probe 3 is compatible with the size of the sealing sleeve 13. When the probe 3 is inserted into the inlet 12, the sealing sleeve 13 will tightly wrap the probe 3 and fill the gap between the probe 3 and the inlet 12, thereby effectively preventing the tetrahydrothiophene gas in the monitoring box 1 from leaking into the external environment through the gap, ensuring the safety and accuracy of the monitoring process, and avoiding the safety hazards that may be caused by gas leakage.
[0052] The end of the connecting pipe 4 is equipped with a flange 14, which facilitates the overall fixed installation of the device at the end of the gas pipeline for monitoring.
[0053] The top of the monitoring box 1 is equipped with an audible and visual alarm 15, which can issue an audible and visual alarm when the tetrahydrothiophene concentration is higher than the set threshold.
[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A multi-level calibrated online monitoring device for tetrahydrothiophene, comprising a monitoring box (1), a tetrahydrothiophene monitor (2) disposed on the top of the monitoring box (1), and a probe (3) disposed on the bottom of the tetrahydrothiophene monitor (2), characterized in that, The probe (3) is set inside the monitoring box (1). A connecting pipe (4) is fixedly connected to one side of the monitoring box (1). A sealing part (5) is provided on the connecting pipe (4). An electric telescopic rod (6) is fixedly installed on the side of the sealing part (5). A sealing plate (7) is slidably provided on the sealing part (5). The output shaft end of the electric telescopic rod (6) is fixedly installed on the side of the sealing plate (7). An air extraction pipe (8) is fixedly connected between the connecting pipe (4) and the monitoring box (1). A screw pump (9) is provided on the air extraction pipe (8).
2. The multi-level calibrated tetrahydrothiophene online monitoring device according to claim 1, characterized in that, The exhaust end of the extraction pipe (8) is provided with a valve (10).
3. The multi-level calibrated tetrahydrothiophene online monitoring device according to claim 1, characterized in that, The monitoring box (1) is fixedly mounted on the top of the frame (11), the tetrahydrothiophene monitor (2) is snapped onto the frame (11), the monitoring box (1) has an opening (12) on the top, and the probe (3) is slidably mounted on the opening (12).
4. The multi-level calibrated tetrahydrothiophene online monitoring device according to claim 3, characterized in that, The monitoring box (1) is provided with a sealing sleeve (13) at the opening (12), and the size of the probe (3) is adapted to the size of the sealing sleeve (13).
5. The multi-level calibrated tetrahydrothiophene online monitoring device according to claim 1, characterized in that, The end of the connecting pipe (4) is provided with a flange (14).
6. The multi-level calibrated tetrahydrothiophene online monitoring device according to claim 1, characterized in that, The monitoring box (1) is equipped with an audible and visual alarm (15) on its top.