Online dew point sampling device
By designing the filtration and fixing mechanism of the online dew point sampling device, the problems of moisture and impurity backflow and cable loosening were solved, achieving stable operation and convenient maintenance of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JINGCHI MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-06-02
AI Technical Summary
Existing dew point detection devices are prone to backflow of moisture and impurities during the detection process, and cable connections are easily loosened, making the devices inconvenient to use.
An online dew point sampling device was designed, comprising a filtration mechanism and a fixing mechanism. The filtration mechanism filters impurities and collects liquid through a filter element, while the fixing mechanism secures the cable with an adjusting rod and a pressure block to prevent backflow and loosening.
It achieves effective collection and cleaning of impurities and liquids, prevents backflow, ensures secure cable connections, and improves the reliability of the device.
Smart Images

Figure CN224317370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dew point detection technology, specifically to an online dew point sampling device. Background Technology
[0002] Dew point detection is used to measure and determine the temperature at which water vapor in a gas begins to condense into liquid water. When a gas is cooled, the saturated vapor content of its water vapor decreases. In the manufacturing process of electronic chips, even a tiny amount of moisture can cause problems such as short circuits and performance degradation. Dew point detection is used to strictly control the humidity of the production environment.
[0003] The publication number CN222420068U discloses a gas dew point detection device, including: a gas dew point analyzer and a support base, wherein the support base is disposed at the bottom of the gas dew point analyzer.
[0004] The aforementioned dew point detection device effectively prevents the gas dew point analyzer from moving or falling due to accidental collisions or pipeline pulling. However, during the detection process, some moisture and impurities are prone to backflow through the air inlet pipe, making collection and cleaning inconvenient. Furthermore, the cable is prone to loosening and falling off at the connection point when under tension, making it inconvenient to quickly fix the cable. Utility Model Content
[0005] The purpose of this invention is to provide an online dew point sampling device to solve the technical problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An online dew point sampling device includes a housing. A filtration mechanism is installed inside the housing. A fixing mechanism is installed near the bottom of the housing. An inlet pipe and an outlet pipe are installed through the bottom of the housing. Needle valves are installed on the outside of both the inlet and outlet pipes. The filtration mechanism includes a filter cartridge. A drain pipe is installed at the bottom of the filter cartridge. An inclined pipe is installed between the outside of the drain pipe and the top of the inlet pipe. A collection cylinder is connected to the bottom of the drain pipe. A filter element is installed inside the filter cartridge. A sealing cap is connected to the top of the filter cartridge. A sampling sleeve is connected to the outside of the filter cartridge. A dew point sensor is installed through the bottom of the sampling sleeve. A flow meter is connected between the outside of the sampling sleeve and the outlet pipe.
[0008] Preferably, the height of the connection between the inclined tube and the drain pipe is lower than the height of the top of the air inlet pipe, and the top of the collecting cylinder is located at the bottom of the drain pipe and is connected by a thread.
[0009] Preferably, the filter cartridge is interconnected with the interior of the drain pipe, the inclined pipe and the air inlet pipe.
[0010] Preferably, the sealing cap is threadedly connected to the inner wall of the top of the filter cartridge, and the diameter of the filter element is smaller than the inner diameter of the filter cartridge.
[0011] Preferably, the fixing mechanism includes two cable tubes, which are respectively installed on the bottom of the box on both sides. A fixing sleeve is fixedly installed on the outside of the cable tubes, and an adjusting rod is movably installed inside the fixing sleeve. A knob is fixedly installed at the front end of the adjusting rod, and two pressure blocks are movably installed on the outside of the adjusting rod.
[0012] Preferably, the threads at both ends of the adjusting rod are arranged in opposite directions, and the pressure block and the adjusting rod are connected by threads.
[0013] Preferably, the two pressure blocks extend through the interior of the cable conduit, and anti-slip grooves are provided on opposite sides of the two pressure blocks.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1) This dew point sampling device, by setting up a filtration mechanism, filters impurities from the gas through the filter element. Through the drain pipe and inclined tube, some liquid and impurities can fall into the collection cylinder for collection, which is convenient for regular cleaning and prevents liquid and impurities from flowing back. The connection between the sealing cover and the filter cylinder facilitates the cleaning and replacement of the filter element.
[0016] 2) This dew point sampling device, through the setting of a fixing mechanism, the adjusting rod drives two pressure blocks to slide. Through the two pressure blocks, the cable can be pressed tightly, the friction between the cable and the device can be increased, and the connection can be prevented from loosening due to pulling. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the online dew point sampling device according to an embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the filter mechanism in an embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the fixing mechanism in an embodiment of the present utility model;
[0020] Figure 4 This is a schematic diagram of the internal structure of the fixing mechanism in an embodiment of this utility model.
[0021] In the diagram: 1. Housing; 2. Filtering mechanism; 3. Fixing mechanism; 4. Inlet pipe; 5. Outlet pipe; 6. Needle valve; 7. Filter cartridge; 8. Drain pipe; 9. Inclined tube; 10. Collection cylinder; 11. Filter element; 12. Sealing cap; 13. Sampling sleeve; 14. Dew point sensor; 15. Flow meter; 16. Cable tray; 17. Fixing sleeve; 18. Adjusting rod; 19. Knob; 20. Pressure block. Detailed Implementation
[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example 1
[0024] Combination Figures 1-4 The online dew point sampling device includes a housing 1, a filter mechanism 2 installed inside the housing 1, and a fixing mechanism 3 installed at the bottom of the housing 1.
[0025] See Figure 2 Furthermore, an air inlet pipe 4 and an air outlet pipe 5 are respectively installed at the bottom of the interior of the housing 1. A needle valve 6 is installed on the outside of both the air inlet pipe 4 and the air outlet pipe 5. The filter mechanism 2 includes a filter cartridge 7. A drain pipe 8 is installed at the bottom of the filter cartridge 7. An inclined pipe 9 is installed between the outside of the drain pipe 8 and the top of the air inlet pipe 4. A collection cylinder 10 is connected to the bottom of the drain pipe 8. A filter element 11 is installed inside the filter cartridge 7. A sealing cap 12 is connected to the top of the filter cartridge 7. A sampling sleeve 13 is connected to the outside of the filter cartridge 7. A dew point sensor 14 is installed through the bottom of the sampling sleeve 13. A flow meter 15 is connected between the outside of the sampling sleeve 13 and the air outlet pipe 5.
[0026] The height of the connection between the inclined tube 9 and the drain pipe 8 is lower than the height of the top of the air inlet pipe 4. The top of the collecting cylinder 10 is located at the bottom of the drain pipe 8 and is connected by a thread. The inclined tube 9 is used to prevent liquid from flowing back from the air inlet pipe 4.
[0027] The filter cartridge 7 is interconnected with the interior of the air inlet pipe 4 through the drain pipe 8 and the inclined pipe 9. Liquid and impurities fall into the collection cylinder 10 through the drain pipe 8 and are collected by the collection cylinder 10.
[0028] The sealing cap 12 is threadedly connected to the inner wall of the top of the filter cartridge 7. The diameter of the filter element 11 is smaller than the inner diameter of the filter cartridge 7. The gas is filtered by the filter element 11 and enters the sampling sleeve 13 for detection by the dew point sensor 14.
[0029] Specifically, the gas enters through the inlet pipe 4, and impurities are filtered through the filter element 11. Liquid and fallen impurities are collected in the collection cylinder 10. The filtered gas enters the sampling sleeve 13 and the dew point is detected by the dew point sensor 14.
[0030] Example 2
[0031] SeeFigure 3 Furthermore, based on Embodiment 1, the fixing mechanism 3 includes two cable tubes 16, which are respectively installed on the bottom of the housing 1 on both sides. A fixing sleeve 17 is fixedly installed on the outside of the cable tube 16, and an adjusting rod 18 is movably installed inside the fixing sleeve 17. A knob 19 is fixedly installed at the front end of the adjusting rod 18, and two pressure blocks 20 are movably installed on the outside of the adjusting rod 18.
[0032] The threads at both ends of the adjusting rod 18 are arranged in opposite directions. The pressure block 20 and the adjusting rod 18 are connected by threads. The adjusting rod 18 drives the two pressure blocks 20 to slide, so as to adjust the tightness of the cable.
[0033] Two pressure blocks 20 penetrate the interior of the cable conduit 16. Anti-slip grooves are provided on opposite sides of the two pressure blocks 20 to increase friction with the cable.
[0034] Specifically, the cable is inserted into the cable tray 16, and the two pressure blocks 20 are slid by the adjusting rod 18. The pressure blocks 20 press the cable tightly and increase the friction between the cable and the protective groove on the opposite side to fix the cable.
[0035] In actual operation, the air inlet pipe 4 and the air outlet pipe 5 are connected to the corresponding pipes, and the opening and closing of the air inlet pipe 4 and the air outlet pipe 5 are controlled by the needle valve 6.
[0036] During filtration testing, gas enters through the inlet pipe 4 and then through the inclined pipe 9 and the drain pipe 8 into the filter cartridge 7. The gas passes through the filter element 11 to filter impurities. Some liquid and fallen impurities are collected in the collection cylinder 10 through the drain pipe 8. The collection cylinder 10 is threaded to the bottom of the drain pipe 8 for periodic disassembly and cleaning. The filtered gas enters the sampling sleeve 13 and is dew point detected by the dew point sensor 14. The gas in the sampling sleeve 13 is measured by the flow meter 15 and discharged through the outlet pipe 5.
[0037] When fixing the cable, insert the cable into the cable tube 16, rotate the adjusting rod 18 by the knob 19, and let the two pressure blocks 20 slide to the opposite side under the action of the threads. The pressure blocks 20 will press the cable tightly, and the protective groove on the opposite side of the pressure block 20 will increase the friction between it and the cable, thus fixing the cable.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An online dew point sampling device, comprising a housing (1), characterized in that: The box (1) is equipped with a filter mechanism (2) inside, and a fixing mechanism (3) is installed at the bottom of the box (1). An air inlet pipe (4) and an air outlet pipe (5) are installed at the bottom of the interior of the housing (1). A needle valve (6) is installed on the outside of both the air inlet pipe (4) and the air outlet pipe (5). The filtration mechanism (2) includes a filter cartridge (7). A drain pipe (8) is installed at the bottom of the filter cartridge (7). An inclined pipe (9) is installed between the outside of the drain pipe (8) and the top of the air inlet pipe (4). A collection cylinder (10) is connected to the bottom of the drain pipe (8). A filter element (11) is installed inside the filter cartridge (7). A sealing cap (12) is connected to the top of the filter cartridge (7). A sampling sleeve (13) is connected to the outside of the filter cartridge (7). A dew point sensor (14) is installed through the bottom of the sampling sleeve (13). A flow meter (15) is connected between the outside of the sampling sleeve (13) and the air outlet pipe (5).
2. The online dew point sampling device according to claim 1, characterized in that: The height of the connection between the inclined tube (9) and the drain pipe (8) is lower than the height of the top of the air inlet pipe (4), and the top of the collection cylinder (10) is located at the bottom of the drain pipe (8) and is connected by a thread.
3. The online dew point sampling device according to claim 1, characterized in that: The filter cartridge (7) is interconnected with the interior of the air inlet pipe (4) through the drain pipe (8), the inclined pipe (9).
4. The online dew point sampling device according to claim 1, characterized in that: The sealing cap (12) is threadedly connected to the inner wall of the top of the filter cylinder (7), and the diameter of the filter element (11) is smaller than the inner diameter of the filter cylinder (7).
5. The online dew point sampling device according to claim 1, characterized in that: The fixing mechanism (3) includes two cable tubes (16), which are respectively installed on the bottom of the box (1) on both sides. A fixing sleeve (17) is fixedly installed on the outside of the cable tube (16). An adjusting rod (18) is movably installed inside the fixing sleeve (17). A knob (19) is fixedly installed at the front end of the adjusting rod (18). Two pressure blocks (20) are movably installed on the outside of the adjusting rod (18).
6. The online dew point sampling device according to claim 5, characterized in that: The threads at both ends of the adjusting rod (18) are arranged in opposite directions, and the pressure block (20) and the adjusting rod (18) are connected by threads.
7. The online dew point sampling device according to claim 5, characterized in that: The two pressure blocks (20) penetrate the interior of the cable conduit (16), and anti-slip grooves are provided on opposite sides of the two pressure blocks (20).