An on-line particle monitoring terminal for clean duct systems

Abstract

The utility model relates to pipeline particle monitoring technical field and disclose a kind of online particle monitoring terminal of clean pipeline system, including the monitor main body for monitoring the particle concentration in flowing gas medium, further including the communication pipe of fixed installation in the one side of main pipeline and communication with it, the one end of communication pipe away from monitor main body is fixedly installed with connecting plate by mounting flange, connecting plate one side fixedly installs the insertion sampling pipe with one end extending to the inside of main pipeline, the one end of insertion sampling pipe away from main pipeline exceeds connecting plate and its end side surface is threadedly connected with installation cover body. In the utility model, by rotating the rotation of sealing rubber strip, the communication or closing of sampling hole and insertion sampling pipe is realized, and by connecting joint and connecting pipe, air in main pipeline is directly sent to monitor main body for monitoring, to improve the precision of online particle monitoring in main pipeline of clean pipeline system.

Description

Technical Field

[0001] This utility model relates to the field of pipeline particle monitoring technology, specifically to an online particle monitoring terminal for a clean pipeline system. Background Technology

[0002] In industries with extremely high cleanliness requirements, such as pharmaceuticals and electronic chip manufacturing, clean piping systems are the core infrastructure for maintaining the quality of the production environment, while online particle monitoring terminals are used to monitor particles within clean piping systems.

[0003] A search revealed a patent, CN221100690U, which discloses a waste gas pollutant monitor for pipelines. The monitor includes a main body with a delivery pipe. A loading tray is located at the end of the delivery pipe furthest from the main body. A telescopic cover is fixedly mounted on the top of the loading tray. A flow chamber is snapped onto the loading tray, inside the telescopic cover. A first filter mechanism is located inside the flow chamber, and a second filter mechanism is located on the side of the flow chamber. The second filter mechanism guides the waste gas through the pipeline to a waste gas sampling head for sample extraction, removing tiny solid particles from the pipeline. Simultaneously, during the waste gas flow, the multiple changes in flow direction cause most of the tiny particles in the waste gas to be adsorbed, thus reducing the accumulation of tiny waste particles on the waste gas sampling head and ensuring its normal operation.

[0004] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings: In current clean pipelines, it is necessary to ensure that the dust particles inside the pipeline reach a certain threshold. When monitoring dust particles in clean pipelines, it is necessary to place the main body of the monitor outside the pipeline and sample the flowing air inside the main pipeline through a sampling tube. The sample is then tested by the main body of the monitor. However, when the monitor in the aforementioned comparative document samples the main pipeline, the floating particles in the sample air are blocked, which reduces the accuracy of particle monitoring in clean pipelines. Therefore, there is an urgent need in the field to improve the online particle monitoring terminal to overcome the shortcomings of the existing technology. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an online particle monitoring terminal for clean pipeline systems, thereby improving the accuracy of online particle monitoring within the main pipelines of clean pipeline systems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an online particle monitoring terminal for a clean pipeline system, comprising a monitoring instrument body for monitoring particle concentration in a flowing gas medium, and a connecting pipe fixedly installed on one side of a main pipeline and connected thereto. A connecting plate is fixedly installed at the end of the connecting pipe away from the monitoring instrument body via a mounting flange. An insertion sampling tube extending into the main pipeline is fixedly installed on one side of the connecting plate. The end of the insertion sampling tube away from the main pipeline extends beyond the connecting plate, and a mounting cover is threadedly connected to its end side. A rotating rod adapted to the insertion sampling tube passes through the mounting cover. Several sampling holes are opened on the side of the insertion sampling tube located inside the main pipeline. Several elastic sealing rubber strips adapted to the sampling holes are provided on the side of one end of the rotating rod. A connecting joint communicating with the inside of the insertion sampling tube is fixedly installed on the mounting cover. A connecting pipe is provided between the connecting joint and the monitoring instrument body.

[0007] Preferably, the connecting joint has a valve on its side for controlling the opening and closing of the connecting joint, the connecting pipe is elastic, one end of the connecting joint has a connecting step adapted to the connecting pipe, and the connecting step has several arc-shaped protrusions on its side that are adapted to the connecting pipe.

[0008] Preferably, a rotating plate is fixedly installed at the outer end of the rotating rod.

[0009] Preferably, a limiting rod passes through the rotating plate, and a plurality of limiting holes adapted to the end of the limiting rod, the sealing rubber strip and the sampling hole are opened on one side of the mounting cover. A retaining ring is fixedly installed on the side of the limiting rod, and a spring is provided between the retaining ring and the rotating plate.

[0010] Preferably, a fixing frame is fixedly installed on the upper part of the main body of the monitoring instrument. Two symmetrical clamping plates adapted to the side of the connecting pipe are provided on the side of the fixing frame. A sliding block is fixedly installed at one end of the clamping plate. A sliding groove adapted to the sliding block is opened on one side of the fixing frame. An adjusting threaded rod is rotatably connected through the upper part of the fixing frame. When the adjusting threaded rod rotates, it drives the two sliding blocks to move synchronously towards or away from each other. A limit nut is threadedly connected to the side of the adjusting threaded rod.

[0011] Preferably, a connector strip is fixedly installed on one side of the sealing rubber strip, and a plurality of connector slots adapted to the connector strip are provided at one end of the rotating rod.

[0012] Preferably, an elastic sealing ring is fixedly installed on the side of the insertion sampling tube, and the sealing ring is adapted to the connecting tube and the internal cavity of the main pipe.

[0013] To address the shortcomings of existing technologies, this utility model provides an online particle monitoring terminal for clean pipeline systems, overcoming the deficiencies of existing technologies. The beneficial effects of this utility model are as follows: In this invention, rotating the rotating rod drives the sealing rubber strip to rotate, thereby connecting or closing the sampling hole and the inserted sampling tube. The air in the main pipeline is directly transported to the main body of the monitor through the connecting joint and connecting pipe for monitoring, thereby improving the accuracy of online particle monitoring in the main pipeline of the clean pipeline system.

[0014] In this invention, rotating the adjusting threaded rod can drive the two clamping plates to move simultaneously toward or away from each other. The two clamping plates are clamped on the side of the connecting pipe, which facilitates the installation and fixation of the main body of the monitoring instrument.

[0015] In this invention, an insert strip is provided on the side of the sealing rubber strip, and the insert strip is inserted into the insert groove, which facilitates the installation and subsequent replacement of the sealing rubber strip.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of the monitoring instrument body fixedly installed on the side of the main pipeline in this utility model; Figure 2 This is a schematic diagram of the overall cross-section of the main body of the monitoring instrument after installation in this utility model; Figure 3 This is a schematic diagram of the structure of the sampling tube inserted in this utility model; Figure 4 This is a schematic diagram of the sealing rubber strip in this utility model; Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 6 for Figure 2 Enlarged structural diagram at point B; Figure 7 for Figure 3 Enlarged structural diagram at point C; Figure 8 for Figure 4 Enlarged structural diagram at point D.

[0019] In the diagram: 1. Monitor body; 2. Connecting pipe; 3. Connecting plate; 4. Mounting cover; 5. Rotating rod; 6. Inserted sampling tube; 7. Sampling hole; 8. Sealing rubber strip; 9. Connecting joint; 10. Connecting pipe; 11. Main pipe; 12. Rotating plate; 13. Limiting rod; 14. Limiting hole; 15. Retaining ring; 16. Spring; 17. Valve; 18. Connecting step; 19. Arc-shaped protrusion; 20. Clamping plate; 21. Sliding block; 22. Sliding groove; 23. Adjusting threaded rod; 24. Limiting nut; 25. Insertion strip; 26. Insertion groove; 27. Sealing ring; 28. Fixing frame. Detailed Implementation

[0020] 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.

[0021] Example 1 Please see Figures 1-8 An online particle monitoring terminal for a clean pipeline system includes a monitoring instrument body 1 for monitoring particle concentration in a flowing gas medium, and a connecting pipe 2 fixedly installed on one side of a main pipeline 11 and connected to it. A connecting plate 3 is fixedly installed at the end of the connecting pipe 2 away from the monitoring instrument body 1 via a mounting flange. An insertion sampling tube 6, extending into the main pipeline 11, is fixedly installed on one side of the connecting plate 3. The end of the insertion sampling tube 6 away from the main pipeline 11 extends beyond the connecting plate 3, and a mounting cover 4 is threadedly connected to its end side. A rotating rod 5 adapted to the insertion sampling tube 6 passes through the mounting cover 4. Several sampling holes 7 are provided on the side inside the main pipe 11. Several elastic sealing rubber strips 8 are provided on the side of one end of the rotating rod 5, which are adapted to the sampling holes 7. A connecting joint 9 that communicates with the inserted sampling tube 6 is fixedly installed on the mounting cover 4. A connecting pipe 10 is provided between the connecting joint 9 and the main body 1 of the monitoring instrument. A valve 17 for controlling the opening and closing of the connecting joint 9 is provided on the side of the connecting joint 9. The connecting pipe 10 is elastic. A connecting step 18 adapted to the connecting pipe 10 is provided on the side of one end of the connecting joint 9. Several arc-shaped protrusions 19 adapted to the connecting pipe 10 are provided on the side of the connecting step 18.

[0022] The specific implementation method in this embodiment: The clean pipeline system is a special pipeline system designed for transporting high-purity media (such as high-purity gases). Its core components include: pipeline body, connectors and valve bodies, purification device, cleaning and disinfection system, and control system. The core objective of the system is to maintain the cleanliness of the media during transportation and avoid external contamination or contaminants generated by the pipeline itself. When online particle monitoring is required in the main pipeline 11 of the clean pipeline system, the connecting plate 3 is fixedly and sealed to the connecting flange at one end of the connecting pipe 2 using fasteners in existing known technologies. One end of the sampling tube 6 is inserted into the main pipe. Inside pipe 11, the rotating rod 5 is rotatably connected to the mounting cover 4. Several sealing rubber strips 8 block several sampling holes 7. When online particle monitoring of the flowing medium in the main pipe 11 is required, the main body 1 of the monitor is opened and its operational stability is tested. The connecting joint 9 is opened through valve 17, and the rotating rod 5 is rotated. When the rotating rod 5 rotates, it drives the sealing rubber strips 8 to rotate. After the sealing rubber strips 8 rotate, the sampling holes 7 are no longer blocked, and the flowing medium in the main pipe 11 flows through the sampling holes 7 into the inserted sampling tube 6 and is discharged through the connecting joint 9. After the flowing medium is discharged for a period of time, the residual medium in the inserted sampling tube 6 is monitored. After the particles are carried out, valve 17 is closed, and connecting pipe 10 is connected to connecting joint 9. One end of connecting pipe 10 is inserted into the connecting step 18 on the side of one end of connecting joint 9, and the arc-shaped protrusion 19 is used to improve the connection stability between connecting joint 9 and connecting pipe 10. Valve 17 is opened again, and the flowing medium in the main pipeline 11 flows into the main body of the monitoring instrument 1 for sampling. After the sample is collected, valve 17 is closed, and the main body of the monitoring instrument 1 is turned on. The main body of the monitoring instrument 1 is based on existing known technology, such as a laser scattering monitoring instrument. When particles in the sample medium pass through the laser beam, they will scatter the laser light. The intensity and angle of the scattered light are measured. The accuracy of particle monitoring is related to the particle size and number (large particles scatter light strongly at large angles, while small particles scatter light weakly at small angles). The photodetector at the terminal (such as a photodiode array) captures the scattered light signal and converts it into an electrical signal. The signal is analyzed by the processor to calculate the particle size distribution (such as the number of particles in the 0.3μm, 0.5μm, and 1.0μm ranges) and concentration. This data is then transmitted to the control system via a display screen or communication interface (such as RS485). If the value exceeds the limit, the terminal triggers an audible and visual alarm to prompt the operator to intervene, thereby improving the accuracy of online particle monitoring within the main pipeline 11 of the clean pipeline system.

[0023] It is worth noting that if it is necessary to remotely monitor the air particle situation in the main pipe 11, a drive motor can be installed at one end of the rotating rod 5, and a remote signal transmission module can be installed in the main body 1 of the monitoring instrument. The drive motor can be controlled by the remote device to drive the rotating rod 5 to rotate forward and backward. With the help of the signal transmission module, the effect of remote monitoring of particles in the main pipe 11 of the clean pipeline system can be achieved.

[0024] Example 2 Please see Figure 5 This embodiment includes the above embodiment, and further includes: a rotating plate 12 is fixedly installed on one end of the rotating rod 5 located on the outside, a limiting rod 13 passes through the rotating plate 12, a plurality of limiting holes 14 adapted to the end of the limiting rod 13, the sealing rubber strip 8 and the sampling hole 7 are opened on one side of the mounting cover 4, a retaining ring 15 is fixedly installed on the side of the limiting rod 13, and a spring 16 is provided between the retaining ring 15 and the rotating plate 12.

[0025] The specific implementation method in this embodiment is as follows: By setting a rotating plate 12, the rotating rod 5 can be rotated. When the rotating rod 5 is rotated, the limiting rod 13 is pulled away from the mounting cover 4. The retaining ring 15 squeezes the spring 16 sleeved on the side of the limiting rod 13. The spring 16 is compressed, and one end of the limiting rod 13 is disengaged from one of the limiting holes 14. The rotating rod 5 can then be rotated by the rotating plate 12. The position of the limiting rod 13 is aligned with the position of the other limiting hole 14. When the limiting rod 13 is released, it is subjected to the tension of the spring 16. One end of the limiting rod 13 is inserted into the limiting hole 14 to limit the rotation of the rod 5. The positions of the several limiting holes 14 are adapted to the blocking positions of the sealing rubber strip 8 on the sampling hole 7, which facilitates the opening or complete coverage of the sampling hole 7 and improves the stability of the sealing rubber strip 8 after rotation.

[0026] Example 3 Please see Figure 1 , Figure 3 and Figure 7 This embodiment includes all the above embodiments, and further includes: a fixed frame 28 is fixedly installed on the upper part of the monitoring instrument body 1, and two symmetrical clamping plates 20 adapted to the side of the fixed frame 28 are provided on the side. A sliding block 21 is fixedly installed on one end of the clamping plate 20. A sliding groove 22 adapted to the sliding block 21 is opened on one side of the fixed frame 28. An adjusting threaded rod 23 is rotatably connected through the upper part of the fixed frame 28. When the adjusting threaded rod 23 rotates, it drives the two sliding blocks 21 to move synchronously towards or away from each other. A limit nut 24 is threadedly connected to the side of the adjusting threaded rod 23.

[0027] In this embodiment, the specific implementation method is as follows: When installing the main body 1 of the monitor, the two clamping plates 20 are placed in opposite directions in the connecting pipe 2. The adjusting thread rod 23 is rotated. The threads of the adjusting thread rod 23 on the inner side of the sliding groove 22 are symmetrical and opposite. When the adjusting thread rod 23 rotates, it synchronously drives the two sliding blocks 21 to move towards each other in the sliding groove 22. The sliding blocks 21 drive the clamping plates 20 to move. The two clamping plates 20 that are adapted to the side of the connecting pipe 2 are clamped on the side of the connecting pipe 2. The adjusting thread rod 23 and the limiting nut 24 are locked to facilitate the fixed installation of the main body 1 of the monitor on the side of the connecting pipe 2.

[0028] Example 4 Please see Figure 2 , Figure 3 and Figure 8 This embodiment includes all the above embodiments, and further includes: a plug strip 25 is fixedly installed on one side of the sealing rubber strip 8, and a plurality of plug grooves 26 adapted to the plug strip 25 are opened at one end of the rotating rod 5. An elastic sealing ring 27 is fixedly installed on the side of the inserted sampling tube 6, and the sealing ring 27 is adapted to the internal cavity of the connecting pipe 2 and the main pipe 11.

[0029] In this embodiment, the sealing effect of the sealing rubber strip 8 deteriorates. The mounting cover 4, which is threaded to one side of the connecting pipe 2, is removed, and the rotating rod 5 is pulled out. The sealing rubber strip 8 can then be replaced. The insertion strip 25 on one side of the new sealing rubber strip 8 is inserted into the insertion groove 26 on the rotating rod 5. The replacement of the sealing rubber strip 8 can be completed without replacing other parts. By setting a sealing ring 27 that is compatible with the cavity inside the connecting pipe 2 and the main pipe 11, a large number of particles are prevented from remaining in the connecting pipe 2, which would affect the accuracy of particle monitoring in the main pipe 11.

[0030] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An online particle monitoring terminal for a clean pipeline system, comprising a monitoring instrument body (1) for monitoring the particle concentration in a flowing gas medium, characterized in that, It also includes a connecting pipe (2) fixedly installed on one side of the main pipe (11) and connected to it. The end of the connecting pipe (2) away from the main body (1) of the monitor is fixedly installed with a connecting plate (3) through a mounting flange. An insertion sampling tube (6) extending into the main pipe (11) is fixedly installed on one side of the connecting plate (3). The end of the insertion sampling tube (6) away from the main pipe (11) extends beyond the connecting plate (3) and its end side is threadedly connected to a mounting cover (4). A rotating rod (5) adapted to the insertion sampling tube (6) passes through the mounting cover (4). Several sampling holes (7) are opened on the side of the insertion sampling tube (6) located in the main pipe (11). Several elastic sealing rubber strips (8) adapted to the sampling holes (7) are provided on the side of one end of the rotating rod (5). A connecting joint (9) communicating with the inside of the insertion sampling tube (6) is fixedly installed on the mounting cover (4). A connecting pipe (10) is provided between the connecting joint (9) and the main body (1) of the monitor.

2. The online particle monitoring terminal for a clean pipeline system according to claim 1, characterized in that, The connecting joint (9) has a valve (17) on its side for controlling the opening and closing of the connecting joint (9). The connecting pipe (10) is elastic. One end of the connecting joint (9) has a connecting step (18) adapted to the connecting pipe (10). The connecting step (18) has several arc-shaped protrusions (19) adapted to the connecting pipe (10) on its side.

3. The online particle monitoring terminal for a clean pipeline system according to claim 1, characterized in that, A rotating plate (12) is fixedly installed at the outer end of the rotating rod (5).

4. The online particle monitoring terminal for a clean pipeline system according to claim 3, characterized in that, A limiting rod (13) passes through the rotating plate (12). A number of limiting holes (14) are provided on one side of the mounting cover (4) to match the end of the limiting rod (13), the sealing rubber strip (8) and the sampling hole (7). A retaining ring (15) is fixedly installed on the side of the limiting rod (13). A spring (16) is provided between the retaining ring (15) and the rotating plate (12).

5. The online particle monitoring terminal for a clean pipeline system according to claim 1, characterized in that, The main body (1) of the monitor is fixedly mounted with a fixed frame (28). The fixed frame (28) has two symmetrical clamping plates (20) on its side that are adapted to the side of the connecting pipe (2). A sliding block (21) is fixedly mounted on one end of the clamping plate (20). A sliding groove (22) adapted to the sliding block (21) is opened on one side of the fixed frame (28). An adjusting threaded rod (23) is rotatably connected through the upper part of the fixed frame (28). When the adjusting threaded rod (23) rotates, it drives the two sliding blocks (21) to move synchronously towards or away from each other. A limit nut (24) is threadedly connected to the side of the adjusting threaded rod (23).

6. The online particle monitoring terminal for a clean pipeline system according to claim 1, characterized in that, A connector strip (25) is fixedly installed on one side of the sealing rubber strip (8), and a number of connector slots (26) adapted to the connector strip (25) are opened at one end of the rotating rod (5).

7. The online particle monitoring terminal for a clean pipeline system according to claim 1, characterized in that, The side of the insertion sampling tube (6) is fixedly equipped with an elastic sealing ring (27), which is adapted to the internal cavity of the connecting tube (2) and the main pipe (11).

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