Multi-channel self-sealing flow regulation module

Abstract

The utility model provides a multi-channel self-sealing flow regulating module, which comprises a pipeline inlet, a plurality of pipeline outlets, a plurality of flow regulating valves and a plurality of flow regulating valves, the pipeline inlet is connected with a plurality of pipeline outlets connected with all adsorption pipelines of an activation instrument in a one-to-one correspondence manner, and the pipeline inlet and the pipeline outlets are respectively positioned in the center of the side surface and the center of the upper part of the flow regulating module; a regulating valve is arranged on the circulating pipeline between each pipeline outlet and the corresponding pipeline inlet, and the regulating valves are installed on the side portion of the flow regulating module. The multi-channel self-sealing flow regulation module provided by the utility model is simple and reasonable in structure and strong in integrity, each adsorption pipeline of the adsorption tube activation instrument is communicated to the pipeline interface of the flow regulation module, and the gas flow is precisely regulated through the regulating valve, so that the flow stability of the adsorption tube activation instrument is improved; when the adsorption pipeline is taken down from the flow adjusting module, a reset mechanical structure in the flow adjusting module can seal a pipeline outlet immediately, gas leakage cannot be caused, and the applicability is good.

Description

Technical Field

[0001] This utility model relates to the field of thermal desorption technology, and more specifically, to a multi-channel self-sealing flow regulation module. Background Technology

[0002] The key to accurate detection using thermal desorption technology lies in employing adsorption tubes that are free from contamination and have extremely low blank values. The activation instrument is a supporting device designed to provide users of thermal desorption instruments with reusable, qualified adsorption tubes.

[0003] The activator can simultaneously activate 1-24 adsorption lines using gas. Current activation methods involve passing gas through the adsorption lines under pressure. The adsorption lines are filled with granular adsorbent, and because this is done manually, it's difficult to control the resistance, resulting in inconsistent resistance in each line. This current activation method cannot guarantee consistent gas flow rates for each line.

[0004] The common practice to solve the problem of inconsistent gas flow in multiple pipelines is to add a needle valve to each pipeline to control the gas flow. However, each pipeline does not have a shut-off valve. This means that when it is not necessary for all pipelines to have flow, it is necessary to seal the corresponding pipeline with a sealing plug, or add a gas shut-off valve or solenoid valve to the corresponding pipeline.

[0005] However, the above approach will cause a new problem: with the ventilation pressure remaining unchanged, because some pipelines are closed or cut off, the number of pipelines available for ventilation is reduced, resulting in an increase in the gas flow rate in the ventilation pipelines, which is inconsistent with the required gas flow rate. Utility Model Content

[0006] Therefore, the purpose of this utility model is to design a multi-channel self-sealing flow regulation module, which connects each pipeline of the adsorption tube activator to the pipeline interface of the multi-channel self-sealing flow module. The gas flow of each pipeline can be precisely adjusted by regulating valves, thereby improving the flow stability of the adsorption tube activator.

[0007] This utility model provides a multi-channel self-sealing flow regulation module, including: a pipeline inlet, the pipeline inlet being connected to multiple pipeline outlets corresponding to all adsorption pipelines of the activator, the pipeline inlet and the multiple pipeline outlets being located at the side center and the upper center of the flow regulation module, respectively; a regulating valve is provided on the flow pipeline between each pipeline outlet and the pipeline inlet, the regulating valve being installed on the side of the flow regulation module.

[0008] Specifically, the flow regulation module adopts a "one-in-multiple-out" interface. Gas enters the flow regulation module from a main pipeline inlet, and then is divided into multiple parallel pipelines according to the number of pipelines of the adsorption tubes of the activator to be connected. Finally, the gas is output from the multiple pipeline outlets corresponding to the multiple pipelines.

[0009] After the gas enters multiple pipelines in the flow regulation module from the pipeline inlet, each pipeline is independently equipped with a regulating valve. The gas flow rate of each pipeline can be precisely adjusted through the regulating valve, which makes up for the problem of inconsistent gas flow rates caused by different adsorbent resistance in each adsorption pipeline.

[0010] After the flow rate is regulated by the regulating valve in the pipeline, gas can be output from the pipeline outlet (connection port of the adsorption pipeline) at the required flow rate and connected to the corresponding adsorption tube of the activator. This solves the problem of increased gas flow in the ventilation pipeline caused by using sealing plugs to close the corresponding pipeline or adding gas shut-off valves or solenoid valves to parts of the pipeline.

[0011] Furthermore, a sealing component is provided inside the flow regulation module, below the pipeline outlet. The sealing component includes a sealing ring, a sealing plug, and a return spring arranged sequentially from top to bottom. The sealing ring is sandwiched between the pipeline outlet and the adsorption pipeline.

[0012] The sealing ring is used to seal the connection between the pipe outlet and the adsorption pipe to prevent leakage. After the adsorption pipe is connected to the pipe outlet, the pipe outlet presses down on the sealing plug, and the sealing plug applies pressure downward to the return spring, causing the return spring to deform downward and reach a balanced state. When the adsorption pipe is removed from the pipe outlet of the flow regulating module, the sealing component in the flow regulating module immediately seals the pipe interface (the pipe outlet no longer presses down on the sealing plug, the return spring bounces upward to press against the sealing plug, and the sealing plug presses up on the sealing ring, sealing the connection between the pipe outlet and the adsorption pipe), preventing gas leakage.

[0013] Furthermore, the regulating valve is a needle valve, which includes a needle-shaped valve core and a valve seat arranged coaxially. The needle-shaped valve core is inserted into the valve seat, and the radial clearance between the needle-shaped valve core and the valve seat is adjustable.

[0014] By adjusting the lifting height of the needle valve core, the gap between the outer diameter of the needle valve core and the inner diameter of the valve seat can be adjusted, thereby achieving precise control of the gas flow rate in each pipeline of the flow regulation module.

[0015] Specifically, the needle valve core is the core component of a needle valve. Shaped like a needle, it is made of metal. The valve seat matches the needle shape of the needle valve core. The valve seat is typically made of wear-resistant and corrosion-resistant materials to ensure the valve's sealing performance. Due to the unique needle-shaped design of the needle valve, the contact area between the needle valve core and the valve seat is small, thereby reducing flow loss and improving regulation accuracy.

[0016] Needle valves can withstand higher pressures than other types of valves, have better sealing performance, and are suitable for sealing gaseous media with lower flow rates and higher pressures.

[0017] Furthermore, the needle valve also includes a valve body, and a valve cover is provided on the top of the valve body, the valve cover being detachably connected to the valve body.

[0018] The valve body, as the supporting structure of the needle valve, provides basic support and fluid passage for the valve. The valve body is made of metal to ensure sufficient strength and pressure resistance.

[0019] Preferably, the valve cover is provided with a threaded connection structure or a flange connection structure to facilitate disassembly and installation.

[0020] Furthermore, a valve stem is rotatably mounted on the valve cover, and the needle valve core and valve seat are both located inside the valve body. The needle valve core and the valve stem are coaxially and fixedly connected.

[0021] The valve stem is connected to an operating mechanism (such as a handle). The operating mechanism enables the valve stem to rotate and move. The rotation of the valve stem drives the needle valve core to move, thereby raising and lowering the needle valve core.

[0022] The needle valve core is connected to the valve stem. By rotating the valve stem, the needle valve core can be easily raised or lowered, allowing it to move up and down with the rotation of the valve stem. This changes the gap between the needle valve core and the valve seat, enabling precise control of the gas flow.

[0023] Furthermore, the flow regulation module is provided with sealing grooves near the pipeline inlet and the pipeline outlet, and O-rings for sealing are embedded in the sealing grooves.

[0024] The O-ring at the pipeline inlet can achieve a leak-proof seal between the regulating valve and the flow regulating module, and can also achieve a leak-proof seal between the exterior of the enclosed component and the flow regulating module.

[0025] Furthermore, the pipelines extending from the pipeline inlet and the pipeline outlet into the flow regulation module are both straight pipelines, and the straight pipelines extending from the pipeline inlet and the straight pipelines extending from the pipeline outlet intersect orthogonally.

[0026] Straight pipes have no bends, a shorter path, and lower resistance. The resistance when gas passes through is significantly lower than that of serpentine pipes, and the pressure loss is only 1 / 3 of that of serpentine pipes.

[0027] Straight pipelines have a simple structure, are easy to process and shape, and reduce processing and manufacturing costs.

[0028] The straight pipe has no depressions on the inner wall, allowing debris entering the pipe to drain smoothly with low residue and reduced risk of contamination.

[0029] The straight pipe structure has no dead corners, and residues can be removed by rinsing with water, making cleaning convenient: cleaning time is reduced by more than 50% compared to serpentine pipes.

[0030] Straight pipelines have low maintenance costs, are not easily damaged, require less maintenance over long-term use, and have low overall operating costs.

[0031] Furthermore, the pipeline extending from the regulating valve to the interior of the flow regulating module is a straight pipeline, and the straight pipeline extending from the regulating valve is orthogonally connected to the straight pipeline extending from the pipeline inlet, and the straight pipeline extending from the regulating valve is orthogonally connected to the straight pipeline extending from the pipeline outlet.

[0032] Specifically, the straight pipe extending from the regulating valve and the straight pipe extending from the pipe inlet can be orthogonally connected in the horizontal plane of the three-dimensional coordinate system, and the straight pipe extending from the regulating valve and the straight pipe extending from the pipe outlet can be orthogonally connected in the vertical plane of the three-dimensional coordinate system. The connection between the pipe inlet and the pipe outlet is effectively achieved through the pipe extending from the regulating valve.

[0033] Furthermore, the height of the central axis of the regulating valve is flush with the height of the central axis of the pipeline inlet.

[0034] The pipeline layout, with the control valve and the pipeline inlet centerline aligned at the same height, facilitates machining, reduces complexity and difficulty during processing, and lowers manufacturing costs. Having the pipelines on the same horizontal line also makes installation and maintenance easier for operators. Furthermore, this layout facilitates subsequent maintenance and inspection.

[0035] A pipeline layout with the centerline aligned makes it easier to determine drilling locations, facilitating positioning and drilling, avoiding damage to the flow regulation module, and thus reducing the frequency of maintenance and replacement of module components.

[0036] Keeping the central axis of the pipeline aligned helps prevent damage caused by stress concentration and also reduces interference between different pipelines, thereby improving the stability and safety of the entire pipeline system.

[0037] Compared with the prior art, the beneficial effects of this utility model are:

[0038] The multi-channel self-sealing flow regulation module provided by this utility model has a simple and reasonable structure with strong overall integrity. It connects each adsorption tube of the adsorption tube activator to the pipe interface of the flow regulation module, and the gas flow is precisely regulated by the regulating valve to improve the flow stability of the adsorption tube activator. When the adsorption tube is removed from the flow regulation module, the reset mechanical structure in the flow regulation module will immediately seal the pipe outlet (interface with the adsorption tube) to prevent gas leakage. It has good applicability and broad application prospects. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0040] In the attached diagram:

[0041] Figure 1 This is an exploded view of the structure of the multi-channel self-sealing flow regulation module according to an embodiment of the present invention;

[0042] Figure 2 This is a top view of the structure of the multi-channel self-sealing flow regulation module according to an embodiment of the present invention;

[0043] Figure 3 This is a side view of the pipe inlet of the multi-channel self-sealing flow regulating module according to an embodiment of the present invention;

[0044] Figure 4 This is a side view of the structure of the regulating valve of the multi-channel self-sealing flow regulating module according to an embodiment of the present invention.

[0045] The markings in the attached figure are as follows:

[0046] 1. Pipeline inlet, 2. Pipeline outlet, 3. Regulating valve, 4. Needle valve core, 5. Valve seat, 6. Sealing ring, 7. Sealing plug, 8. Return spring, 9. Sealing groove, 10. O-ring. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0048] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0049] It should be understood that although the terms first, second, and third may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0050] Example

[0051] This utility model embodiment provides a multi-channel self-sealing flow regulation module, such as... Figure 1 , Figure 3As shown, the flow regulation module includes: a pipeline inlet 1, which is connected to multiple pipeline outlets 2 that correspond one-to-one with all the adsorption pipelines of the activator. The pipeline inlet 1 and the multiple pipeline outlets 2 are located at the side center and the top center of the flow regulation module, respectively. A regulating valve 3 is installed on the flow pipeline between each pipeline outlet 2 and the pipeline inlet 1, and the regulating valve 3 is installed on the side of the flow regulation module. This flow regulation module adopts a "one-in, multiple-out" interface. Gas enters the flow regulation module from a single main pipeline inlet 1, and then is divided into multiple parallel pipelines according to the number of adsorption pipelines of the activator to be connected. Finally, the gas is output from the multiple pipeline outlets 2 corresponding to the multiple pipelines. After the gas enters the multiple pipelines in the flow regulation module from the pipeline inlet 1, each pipeline is independently equipped with a regulating valve 3. The regulating valve 3 is a needle valve, which includes a coaxially arranged needle valve core 4 and a valve seat 5. The needle valve core 4 is inserted into the valve seat 5, and the radial clearance between the needle valve core 4 and the valve seat 5 is adjustable. By adjusting the lifting height of the needle valve core 4, the gap between the outer diameter of the needle valve core 4 and the inner diameter of the valve seat 5 can be adjusted, achieving precise control of the gas flow rate in each pipeline of the flow regulation module. The needle valve core 4 is the core component of the needle valve. Shaped like a needle, it is made of metal. The valve seat 5 matches the needle shape of the needle valve core 4. The valve seat 5 is typically made of wear-resistant and corrosion-resistant materials to ensure the valve's sealing performance. Due to the unique needle-shaped design of the needle valve, the contact area between the needle valve core 4 and the valve seat 5 is small, thus reducing flow loss and improving regulation accuracy. Needle valves can withstand higher pressures than other types of valves, have good sealing performance, and are suitable for sealing gas media with lower flow rates and higher pressures. The needle valve includes a valve body with a valve cover on top, which is detachably connected to the valve body. The valve body, as the supporting structure of the needle valve, provides basic support and a fluid passage. The valve body is made of metal to ensure sufficient strength and pressure resistance. The valve cover features either a threaded or flanged connection for easy disassembly and installation. A valve stem is rotatably mounted on the valve cover. The needle valve core 4 and valve seat 5 are both located inside the valve body, with the needle valve core 4 coaxially and fixedly connected to the valve stem. The valve stem is connected to an operating mechanism (handle), which rotates the valve stem, causing the needle valve core 4 to move and rise / fall. The needle valve core 4, connected to the valve stem, can be easily raised or lowered by rotating the valve stem, allowing it to rise and fall with the rotation of the valve stem. This alters the gap between the needle valve core 4 and the valve seat 5, enabling precise control of the gas flow. The regulating valve 3 allows for precise adjustment of the gas flow in each pipeline, compensating for inconsistencies in gas flow caused by varying adsorbent resistance in different adsorption pipelines.After the flow rate is regulated by the regulating valve 3 in the pipeline, gas can be output from the pipeline outlet 2 (the connection port of the adsorption pipeline) according to the required gas flow rate and connected to the corresponding adsorption tube of the activator. This solves the problem of increased gas flow in the ventilation pipeline caused by using sealing plugs to close the corresponding pipeline or adding gas shut-off valves or solenoid valves to part of the pipeline.

[0052] A sealing assembly is located inside the flow regulation module, below the pipe outlet 2. This assembly includes, from top to bottom, a sealing ring 6, a sealing plug 7, and a return spring 8. The sealing ring 6 is sandwiched between the pipe outlet 2 and the adsorption pipe. The sealing ring 6 prevents leakage between the pipe outlet 2 and the adsorption pipe. After the adsorption pipe is connected to the pipe outlet 2, the pipe outlet 2 presses down on the sealing plug 7, which in turn presses down on the return spring 8, causing the spring 8 to deform downwards and reach equilibrium. When the adsorption pipe is removed from the pipe outlet 2 of the flow regulation module, the sealing assembly immediately seals the pipe interface (the pipe outlet 2 no longer presses down on the sealing plug 7; the return spring 8 springs up to press against the sealing plug 7; and the sealing plug 7 presses up on the sealing ring 6, sealing the connection between the pipe outlet 2 and the adsorption pipe), preventing gas leakage.

[0053] The flow regulation module is equipped with sealing grooves 9 near both the pipe inlet 1 and the pipe outlet 2 (e.g. Figure 2As shown, an O-ring 10 for sealing is embedded in the sealing groove 9. The O-ring 10 at the pipe inlet 1 can achieve a leak-proof seal between the regulating valve 3 and the flow regulating module, and can also achieve a leak-proof seal between the exterior of the sealing component and the flow regulating module. The pipes extending from the pipe inlet 1 and the pipe outlet 2 into the flow regulating module are all straight pipes, and the straight pipes extending from the pipe inlet 1 and the straight pipes extending from the pipe outlet 2 intersect orthogonally. The straight pipes have no bends, a short path, and low resistance. The resistance when gas passes through is significantly lower than that of the serpentine pipe, and the pressure loss is only 1 / 3 of that of the serpentine pipe. The straight pipe structure is simple, easy to process and form, and reduces the processing and manufacturing costs. The inner wall of the straight pipe has no depressions, and the debris entering the pipe can be smoothly discharged, with low residue and reduced risk of contamination. The straight pipe structure has no dead corners, and residues can be removed by rinsing with water, making cleaning convenient and reducing cleaning time by more than 50% compared to the serpentine pipe. Straight pipelines have low maintenance costs, are less prone to damage, and require less frequent repairs over long-term use, resulting in low overall operating costs. The pipeline extending from regulating valve 3 to the flow regulation module is a straight pipeline. This straight pipeline extends from regulating valve 3 and the straight pipeline extending from pipe inlet 1, orthogonally intersecting and connecting in the horizontal plane of the three-dimensional coordinate system. Similarly, it extends from regulating valve 3 and the straight pipeline extending from pipe outlet 2, orthogonally intersecting and connecting in the vertical plane of the three-dimensional coordinate system. Through the pipeline extending from regulating valve 3, the connection between pipe inlet 1 and pipe outlet 2 is effectively achieved.

[0054] The height of the central axis of regulating valve 3 is flush with the height of the central axis of pipeline inlet 1 (e.g.) Figure 4 (As shown). The pipeline layout, with the regulating valve 3 and the pipeline inlet 1 aligned at the same height, facilitates processing, reduces complexity and difficulty, and lowers processing costs. Having the pipelines on the same horizontal line also facilitates installation and maintenance by operators. Furthermore, this layout is beneficial for subsequent maintenance and inspection. The aligned pipeline layout makes it easier to determine drilling locations, facilitating positioning and drilling, avoiding damage to the flow regulating module, and thus reducing the frequency of maintenance and replacement of module components. Maintaining the alignment of the pipeline's centerline helps prevent damage due to stress concentration and also reduces interference between different pipelines, improving the stability and safety of the entire pipeline system.

[0055] The multi-channel self-sealing flow regulation module of this embodiment has a simple and reasonable structure with strong overall integrity. Each adsorption tube of the adsorption tube activator is connected to the pipe interface of the flow regulation module. The gas flow rate is precisely regulated by the regulating valve, which improves the flow stability of the adsorption tube activator. When the adsorption tube is removed from the flow regulation module, the reset mechanical structure in the flow regulation module will immediately seal the pipe outlet (interface with the adsorption tube) to prevent gas leakage and make it highly applicable.

[0056] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-channel self-sealing flow regulation module, characterized in that, include: The pipeline inlet is connected to multiple pipeline outlets that correspond one-to-one with all the adsorption pipelines of the activator. The pipeline inlet and the multiple pipeline outlets are located at the side center and the upper center of the flow regulation module, respectively. A regulating valve is installed on the flow pipeline between each pipeline outlet and the pipeline inlet. The regulating valve is installed on the side of the flow regulation module.

2. The multi-channel self-sealing flow regulation module according to claim 1, characterized in that, Inside the flow regulation module, below the outlet of the pipeline, is a sealing component. The sealing component includes a sealing ring, a sealing plug, and a return spring arranged sequentially from top to bottom. The sealing ring is sandwiched between the outlet of the pipeline and the adsorption pipeline.

3. The multi-channel self-sealing flow regulation module according to claim 2, characterized in that, The regulating valve is a needle valve, which includes a needle-shaped valve core and a valve seat arranged coaxially. The needle-shaped valve core is inserted into the valve seat, and the radial clearance between the needle-shaped valve core and the valve seat is adjustable.

4. The multi-channel self-sealing flow regulation module according to claim 3, characterized in that, The needle valve also includes a valve body, and a valve cover is provided on the top of the valve body, the valve cover being detachably connected to the valve body.

5. The multi-channel self-sealing flow regulation module according to claim 4, characterized in that, A valve stem is rotatably mounted on the valve cover. The needle valve core and valve seat are both located inside the valve body. The needle valve core and the valve stem are coaxially and fixedly connected.

6. The multi-channel self-sealing flow regulation module according to claim 1, characterized in that, The flow regulation module is provided with sealing grooves near the pipeline inlet and the pipeline outlet, and O-rings for sealing are embedded in the sealing grooves.

7. The multi-channel self-sealing flow regulation module according to claim 1, characterized in that, The pipelines extending from the inlet and outlet of the pipeline into the flow regulation module are both straight pipelines, and the straight pipelines extending from the inlet and outlet of the pipeline intersect orthogonally.

8. The multi-channel self-sealing flow regulation module according to claim 7, characterized in that, The pipeline extending from the regulating valve into the flow regulating module is a straight pipeline. The straight pipeline extending from the regulating valve is orthogonally connected to the straight pipeline extending from the pipeline inlet, and the straight pipeline extending from the regulating valve is orthogonally connected to the straight pipeline extending from the pipeline outlet.

9. The multi-channel self-sealing flow regulation module according to claim 1, characterized in that, The height of the central axis of the regulating valve is flush with the height of the central axis of the pipeline inlet.

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