A line purging device

Abstract

This utility model provides a pipeline purging device, which is used to clean the interior of a target pipeline, which is used to construct a refrigeration device, using purging gas. The target pipeline may include a compressor, connecting pipe, anti-condensation pipe, condenser, filter, capillary tube, solenoid valve, evaporator, return gas pipe, etc. The pipeline purging device includes a connecting structure, a gas module, a control module, and a power module. The target pipeline includes a first opening and a second opening located at its two ends, with the first opening connected to the connecting structure. The purging gas passes through the first opening and the second opening sequentially. By designing an automatic pipeline purging device, each component is automatically purged before the target pipeline is connected, thereby improving the cleanliness of the pipeline interior, reducing dust content and impurities such as copper and iron filings, and reducing the risk of refrigeration equipment failing to cool or solenoid valve core jamming due to internal pipeline contamination. This improves product quality and enhances product competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and more specifically, to a pipeline purging device. Background Technology

[0002] The core components of a refrigeration system include a compressor, connecting pipes, anti-condensation pipes, condenser, filter, capillary tube, solenoid valve, evaporator, and return pipe. The stable operation of the refrigeration system depends on the cleanliness of its internal circulation loop. However, metal shavings are easily generated and remain during the processing of metal pipes such as compressors, anti-condensation pipes, and condensers; fine powder particles may be shed from the molecular sieves and other adsorbent materials inside the filter during production due to friction and collision; and there is also a risk of generating metal contaminants such as copper shavings in the capillary tube and solenoid valve.

[0003] If the refrigeration pipes contain excessive amounts of dust, iron filings, or copper shavings, it can cause blockages in the refrigerator's refrigeration system and malfunctions such as stuck solenoid valve cores. For example, these contaminants can easily cause physical blockages in capillary tubes with extremely small orifices, or cause the solenoid valve core to jam during operation. Whether it's capillary tube blockage or a stuck solenoid valve, both will disrupt the normal circulation and pressure balance of the refrigeration system, preventing refrigerant from flowing or being distributed as needed; consequently, the refrigerator will fail to cool properly, affecting product quality and market competitiveness. Utility Model Content

[0004] In order to at least overcome the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a pipeline purging device, which is used to clean the inside of a target pipeline by purging gas, wherein the target pipeline is used to form a refrigeration device. The pipeline purging device includes a connection structure, a gas module, a control module, and a power module; The power module is used to supply power to the control module; The control module is electrically connected to the power module and includes a timing control component and a valve component. The timing control component is communicatively connected to the valve component and is used to send a drive signal to the valve component to control the opening or closing of the valve component. The valve component is used to realize the flow or blockage of the purging gas according to the drive signal. The connection structure is used to connect to the target pipeline so that the purging gas flows through the target pipeline; The gas module is connected to the valve assembly and is used to provide the purging gas to the target pipeline; The target pipeline includes a first opening and a second opening located at its two ends, respectively. The first opening is connected to the connection structure, and the purging gas passes through the first opening and the second opening in sequence.

[0005] In one possible implementation, the control module further includes a sensor for detecting the connection status between the connection structure and the target pipeline, and generating a connection signal when the connection structure and the target pipeline are connected; The sensor is communicatively connected to the timing control component and is used to output the connection signal to the timing control component; The timing control component is used to output a drive signal to the valve component when it receives the connection signal.

[0006] In one possible implementation, the control component includes a time relay for setting a preset purge duration; The time relay is also used to control the valve assembly to open and to close the valve assembly after the preset purging time.

[0007] In one possible implementation, the power module includes an overload protection component to prevent the control module from being damaged due to current overload.

[0008] In one possible implementation, the connection structure includes a connector body, a housing, a connection assembly, and a sealing ring arranged coaxially; The connector body has a channel inside for the purge gas to pass through; the end of the connector body near the target pipeline has a guide cone for guiding the insertion of the target pipeline; The outer shell surrounds the connector body and together with the connector body forms a receiving cavity; The connecting component is located within the receiving cavity and is used for movable connection with the target pipeline; The sealing ring is located inside the receiving cavity and is used to form a seal with the outer wall of the target pipeline when the target pipeline is inserted; wherein, the sealing ring and the guide cone are located on both sides of the connecting assembly.

[0009] In one possible implementation, the connection structure is used to connect at least two target pipelines with different outer diameters.

[0010] In one possible implementation, the gas module includes a gas storage assembly for storing the purge gas; The purging gas includes an inert gas.

[0011] In one possible implementation, the valve assembly includes a solenoid valve.

[0012] In one possible implementation, the pipeline purging device further includes a noise reduction component.

[0013] In one possible implementation, the material of the noise-absorbing component includes a porous sound-absorbing material.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a pipeline purging device, which is used to clean the interior of a target pipeline, which is used to construct a refrigeration device, using purging gas. The target pipeline may include a compressor, connecting pipe, anti-condensation pipe, condenser, filter, capillary tube, solenoid valve, evaporator, return gas pipe, etc. The pipeline purging device includes a connecting structure, a gas module, a control module, and a power module. The target pipeline includes a first opening and a second opening located at its two ends, with the first opening connected to the connecting structure. The purging gas passes through the first opening and the second opening sequentially. By designing an automatic pipeline purging device, each component is automatically purged before the target pipeline is connected, thereby improving the cleanliness of the pipeline interior, reducing dust content and impurities such as copper and iron filings, and reducing the risk of refrigeration equipment failing to cool or solenoid valve core jamming due to internal pipeline contamination. This improves product quality and enhances product competitiveness. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is one of the structural schematic diagrams of the pipeline purging device provided in this embodiment; Figure 2 This is the second schematic diagram of the pipeline purging device provided in this embodiment; Figure 3 This is a schematic diagram of the connection between the pipeline purging device and the target pipeline provided in this embodiment; Figure 4 This is a control diagram of the pipeline purging device provided in this embodiment.

[0017] Icons: Pipeline purging device-10; Connection structure-100; Gas module-200; Control module-300; Timer control component-310; Valve component-320; Power module-400; Power switch-410; Touch sensor switch-420; Silencing component-500; Target pipeline-900. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only used 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] 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 based on the specific circumstances.

[0024] It should be noted that, where there is no conflict, different features in the embodiments of this utility model can be combined with each other.

[0025] The inventors' investigation revealed that the core components of a refrigeration system include a compressor, connecting pipes, anti-condensation pipes, a condenser, a filter, a capillary tube, a solenoid valve, an evaporator, and a return pipe. The stable operation of the refrigeration system depends on the cleanliness of its internal circulation loop. However, metal shavings are easily generated and remain during the processing of metal pipes such as compressors, anti-condensation pipes, and condensers; fine powder particles may be shed from the molecular sieves and other adsorbent materials inside the filters during production due to friction and collision; and there is also a risk of generating metal contaminants such as copper shavings in the capillary tubes and solenoid valves.

[0026] If the refrigeration pipes contain excessive amounts of dust, iron filings, or copper shavings, it can cause blockages in the refrigerator's refrigeration system and malfunctions such as stuck solenoid valve cores. For example, these contaminants can easily cause physical blockages in capillary tubes with extremely small orifices, or cause the solenoid valve core to jam during operation. Whether it's capillary tube blockage or a stuck solenoid valve, both will disrupt the normal circulation and pressure balance of the refrigeration system, preventing refrigerant from flowing or being distributed as needed; consequently, the refrigerator will fail to cool properly, affecting product quality and market competitiveness.

[0027] In view of this, the present invention provides a pipeline purging device 10, which is used to clean the interior of a target pipeline 900 by purging gas, wherein the target pipeline 900 is used to form a refrigeration device.

[0028] Optionally, the target pipeline 900 may include pipelines such as compressor, connecting pipe, anti-condensation pipe, condenser, filter, capillary tube, solenoid valve, evaporator, and return gas pipe.

[0029] Please refer to Figure 1 The pipeline purging device 10 includes a connection structure 100, a gas module 200, a control module 300, and a power module 400.

[0030] The power module 400 is used to supply power to the control module 300.

[0031] Alternatively, please refer to Figure 2 The power module 400 can be a 24V AC / DC power switch 410 with overload protection, serving as the main power supply for the pipeline purging device 10. The power module 400 may have overload protection, enabling the control module 300 electrically connected to it to automatically cut off the power supply in case of abnormal current, ensuring the safe operation of the entire pipeline purging device 10.

[0032] Optional, please refer to Figure 2The power module 400 also includes a touch-sensitive switch 420, which responds to a light touch and starts and stops via capacitive sensing to avoid mechanical wear. It can also be waterproofed.

[0033] Please refer to Figure 2 The control module 300 is electrically connected to the power module 400 and includes a timing control component 310 and a valve component 320. The timing control component 310 is communicatively connected to the valve component 320 and is used to send a drive signal to the valve component 320 to control the opening or closing of the valve component 320. The valve component 320 is used to realize the flow or blockage of the purging gas according to the drive signal.

[0034] Optionally, the timing control component 310 can be a programmable time relay, allowing the operator to preset the purging time of the purge gas. The valve component 320 can be a normally closed solenoid valve. The time relay automatically switches on and off and controls the purge gas by outputting a drive signal to the solenoid valve.

[0035] Please refer to Figure 3 The connection structure 100 is used to connect to the target pipeline 900 so that the purging gas flows through the target pipeline 900.

[0036] Optionally, the connection structure 100 can be designed as a quick connector, flange, or threaded interface according to the specifications of the target pipeline 900 interface to ensure a reliable connection with the target pipeline 900 and prevent gas leakage during purging.

[0037] Please refer to Figure 2 The gas module 200 is connected to the valve assembly 320 and is used to provide the purging gas to the target pipeline 900.

[0038] For example, high-purity nitrogen can be used as the purging gas. In addition, it can be replaced with other inert gases, such as argon or carbon dioxide, depending on the process requirements.

[0039] The target pipeline 900 includes a first opening and a second opening located at its two ends, respectively. The first opening is connected to the connection structure 100, and the purging gas passes through the first opening and the second opening in sequence.

[0040] In this embodiment, the first opening is the process air inlet of the target pipeline 900, and the second opening is the process air outlet. Purge gas is injected through the first opening, filling the entire target pipeline 900, and expelling impurities from the target pipeline 900 through the second opening until the target pipeline 900 reaches the required cleanliness and dryness.

[0041] In this embodiment, by automatically purging each of the aforementioned target pipes 900 before connection, the cleanliness of the pipes is improved, the dust content and impurities such as copper and iron filings are reduced, and the risk of the assembled refrigeration equipment failing to cool or the solenoid valve core jamming due to dirt blockage in the pipes is reduced, thereby improving product quality and enhancing product competitiveness.

[0042] In one possible implementation, the control module 300 further includes a sensor for detecting the connection status between the connection structure 100 and the target pipeline 900, and generating a connection signal when the connection structure 100 and the target pipeline 900 are connected.

[0043] Please refer to Figure 4 The sensor is communicatively connected to the timing control component 310 and is used to output the connection signal to the timing control component 310.

[0044] The timing control component 310 is used to output a drive signal to the valve component 320 when it receives the connection signal.

[0045] In this embodiment, the sensor can be a position sensor or a magnetic switch. When the operator locks the target pipeline 900 to the connection structure 100 of the pipeline purging device 10, the sensor is triggered, causing it to generate a high-level connection signal, which is transmitted to the timing control component 310. Thus, the timing control component 310 is only activated and starts the purging process after the pipeline purging device 10 and the target pipeline 900 are confirmed to be connected, thereby automating the pipeline purging device 10 and preventing purging gas leakage due to improper connection.

[0046] In one possible implementation, please refer to Figure 4 The control component includes a time relay, which is used to set a preset purging duration.

[0047] The time relay is also used to control the valve assembly 320 to open and to close the valve assembly 320 after the preset purging time.

[0048] In this embodiment, the time relay can be a digital DIP switch type. The operator can set a preset purging duration in seconds using the DIP switch on its panel. When the time relay is activated, its internal timer starts working and simultaneously outputs a drive signal to the valve assembly 320 to open the valve. When the accumulated energizing time reaches the preset purging duration, the time relay automatically cuts off the drive signal, causing the valve to close. This achieves full automation of the pipeline purging process of the pipeline purging device 10, ensuring consistency in the duration of each purging operation, improving operational efficiency, and avoiding insufficient or excessive purging.

[0049] In one possible implementation, the power module 400 includes an overload protection component to prevent the control module 300 from being damaged due to current overload.

[0050] In this embodiment, the overload protection components may include a fuse and a bimetallic thermal overload relay. When the control module 300 experiences a short circuit or overcurrent fault due to external causes, the fuse will quickly melt to cut off the main circuit, thereby protecting the pipeline purging device 10. The overload relay can handle minor overloads for extended periods. When the current in the control module 300 exceeds the safety threshold for a period of time, its bimetallic strip will deform due to heat, causing the contacts to open and cutting off the power supply from the power module 400 to the control module 300. This improves the reliability of the pipeline purging device 10 in this application and extends its service life.

[0051] In one possible implementation, the connection structure 100 includes a connector body, a housing, a connection assembly, and a sealing ring arranged coaxially.

[0052] The connector body has a channel inside for the purge gas to pass through; the end of the connector body near the target pipeline 900 has a guide cone for guiding the insertion of the target pipeline 900.

[0053] The outer shell surrounds the connector body and together with the connector body forms a receiving cavity.

[0054] The connecting assembly is located within the receiving cavity and is used for movable connection with the target conduit 900. The connecting assembly includes a retainer, steel balls, and a sliding sleeve.

[0055] The sealing ring is located inside the receiving cavity and is used to form a seal with the outer wall of the target pipe 900 when the target pipe 900 is inserted; wherein the sealing ring and the guide cone are located on both sides of the connecting assembly.

[0056] In this embodiment, the connecting structure 100 is a quick-locking connector. When the target pipe 900 is not inserted, the sliding sleeve is in the front position under the action of the internal spring, pressing the steel ball inward. When the operator inserts the target pipe 900 along the guide cone opening, the target pipe 900 overcomes the resistance and pushes the steel ball outward. Then, the sliding sleeve, under the action of the spring reset, pushes the steel ball back, locking it into the edge of the target pipe 900, thereby achieving mechanical locking. At the same time, the sealing ring located on the rear side of the connecting assembly is compressed and adheres to the outer wall of the target pipe 900, forming a seal. This improves the convenience and reliability of the connection operation.

[0057] It should be noted that, in addition to the connection structure 100 in this embodiment, other structures can also be used for fixed connection.

[0058] In one possible implementation, the connection structure 100 is used to connect at least two target pipes 900 with different outer diameters.

[0059] Optionally, to achieve compatibility with target pipes 900 of various specifications, the connection structure 100 can adopt an adaptive design. Specifically, multiple sealing rings are sequentially arranged axially within the receiving cavity of the connection structure 100, and the inner diameters of these sealing rings correspond to the outer diameters of target pipes 900. When a target pipe 900 with a smaller outer diameter is inserted, a seal is achieved by a sealing ring with a smaller inner diameter that matches the size.

[0060] In this embodiment, the adaptive connection structure 100 meets the purging requirements of various specifications of target pipelines 900 in the refrigeration equipment, enhances the versatility of the equipment, and reduces the cost of replacing the connection structure 100.

[0061] For example, the connection structure 100 in this embodiment can be used to adapt to a target pipeline 900 with an outer diameter in the range of 4mm to 12mm.

[0062] In one possible implementation, the gas module 200 includes a gas storage assembly for storing the purge gas.

[0063] The gas module 200 also includes an inlet pipe for guiding the purge gas stored in the gas storage assembly to the valve assembly 320.

[0064] Optionally, the pipeline purging device 10 also includes a housing for accommodating the power module 400 and the control module 300; the housing includes a first through hole and a second through hole, the connection structure 100 is embedded in the first through hole for connecting to the target pipeline 900, and the second through hole is used to accommodate the passage of the air intake pipe.

[0065] The purging gas includes an inert gas.

[0066] Optionally, the purging gas may include nitrogen, argon, carbon dioxide, and helium.

[0067] In this embodiment, the pipeline purging device 10 removes residues and other contaminants from the pipeline using purging gas, thereby ensuring the cleanliness of the refrigeration system. The inert gas is chemically stable and does not readily react, and it can also remove flammable and explosive air, preventing adverse effects such as oxidation on the refrigeration equipment caused by residual gas in the target pipeline 900, thus improving the reliability of the refrigeration system.

[0068] In one possible implementation, the valve assembly 320 includes a solenoid valve.

[0069] In this embodiment, the solenoid valve controls the purging gas in the pipeline purging device 10. It is directly connected to the purging gas source interface in the gas storage device and the target pipeline 900, forming a rapidly responsive purging gas on / off system. The response time of the solenoid valve in this embodiment is less than 50 milliseconds. This ensures that when the drive signal is issued, the purging gas can be injected into the target pipeline 900 instantly, forming purging pressure to remove residual contaminants from the target pipeline 900. When purging ends, the solenoid valve closes instantly, avoiding waste of purging gas. The pressure resistance range of the solenoid valve in this embodiment is 0.5 to 1 MPa. This allows it to stably adapt to different working pressure points, enabling gentle purging at a lower pressure of 0.5 MPa and powerful purging at a higher pressure of 1 MPa, without damage to the internal seals or malfunction due to pressure fluctuations.

[0070] For example, please refer to Figure 4 When using the pipeline purging device 10 in this embodiment, the solenoid valve receives a drive signal from a time relay. This signal drives the internal electromagnetic coil to generate a magnetic field, attracting the valve core to move against the spring force, thereby opening or closing the valve and controlling the air path. Compared to traditional manual ball valves or pneumatic valves, the solenoid valve in this embodiment can improve the automation level and control accuracy of the purging process.

[0071] When valve assembly 320 opens and closes rapidly, purge gas passes through the intake pipe at high speed. The expansion and turbulence of this gas generate high-frequency, high-intensity noise, which may cause hearing damage to operators exposed to this environment for extended periods. It can also cause fatigue, mental stress, and reduced work efficiency. Therefore, in one possible implementation, please refer to... Figure 2 and Figure 4 The pipeline purging device 10 also includes a noise reduction component 500.

[0072] In this embodiment, the silencing component 500 is positioned near the inlet pipe of the purging gas. This reduces the intense jet noise generated when the high-pressure purging gas in the gas storage assembly is released or flows at high speed, thereby improving the working environment. By installing the silencing component 500 on the pipeline purging device 10, this device can reduce airflow noise to below 65 decibels, reaching a sound level similar to normal conversation, thus reducing noise pollution. Furthermore, the silencing component 500 can also suppress pipeline vibration to a certain extent, thereby protecting the sealing of pipeline connections, extending the service life of the refrigeration system, and improving the product competitiveness of the refrigeration equipment.

[0073] In one possible implementation, the material of the noise-absorbing component 500 includes a porous sound-absorbing material.

[0074] In this embodiment, the noise reduction component 500 can be made of a porous sound-absorbing material. In this way, when the sound waves caused by the airflow enter the countless tiny and interconnected pores inside the material, they will cause friction and adhesion between the air molecules and the pore walls, thereby converting the sound energy into heat energy and dissipating it, thereby reducing the noise when the pipeline purging device 10 is working.

[0075] For example, porous sound-absorbing materials can be made from brass metal particles through a sintering process. This type of material has good sound absorption performance, as well as certain structural strength, pressure resistance, and thermal conductivity. It can withstand the pressure impact and mechanical vibration that may occur within the pipeline purging device 10. Furthermore, because it does not easily shed particles, it can ensure cleanliness during operation. Porous sound-absorbing materials can also be made of polyurethane foam, whose open-cell structure provides good sound wave absorption channels. It is also lightweight and easy to process into various shapes to fill sound-absorbing cavities.

[0076] It should be noted that in other implementations of this embodiment, in addition to the porous sound-absorbing material mentioned in this embodiment, other materials can be selected to make the sound-absorbing component 500, and no specific limitation is made here.

[0077] In summary, this utility model provides a pipeline purging device 10, which is used to clean the interior of a target pipeline 900 using purging gas. The target pipeline 900 is used to construct a refrigeration device. The target pipeline 900 may include a compressor, connecting pipe, anti-condensation pipe, condenser, filter, capillary tube, solenoid valve, evaporator, return gas pipe, etc. The pipeline purging device 10 includes a connecting structure 100, a gas module 200, a control module 300, and a power module 400. The target pipeline 900 includes a first opening and a second opening located at its two ends. The first opening is connected to the connecting structure 100, and the purging gas passes through the first opening and the second opening sequentially. By designing an automatic pipeline purging device, the components are automatically purged before the target pipeline 900 is connected, thereby improving the cleanliness of the pipeline interior, reducing dust content and impurities such as copper shavings and iron shavings, and reducing the risk of the assembled refrigeration device failing to cool or the solenoid valve core jamming due to internal pipeline contamination. This improves product quality and enhances product competitiveness.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0079] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipeline purging device, characterized in that, The pipeline purging device is used to clean the inside of a target pipeline by purging gas, wherein the target pipeline is used to form a refrigeration device; The pipeline purging device includes a connection structure, a gas module, a control module, and a power module; The power module is used to supply power to the control module; The control module is electrically connected to the power module and includes a timing control component and a valve component. The timing control component is communicatively connected to the valve component and is used to send a drive signal to the valve component to control the opening or closing of the valve component. The valve component is used to realize the flow or blockage of the purging gas according to the drive signal. The connection structure is used to connect to the target pipeline so that the purging gas flows through the target pipeline; The gas module is connected to the valve assembly and is used to provide the purging gas to the target pipeline; The target pipeline includes a first opening and a second opening located at its two ends, respectively. The first opening is connected to the connection structure, and the purging gas passes through the first opening and the second opening in sequence.

2. The pipeline purging device according to claim 1, characterized in that, The control module also includes a sensor for detecting the connection status between the connection structure and the target pipeline, and generating a connection signal when the connection structure and the target pipeline are connected; The sensor is communicatively connected to the timing control component and is used to output the connection signal to the timing control component; The timing control component is used to output a drive signal to the valve component when it receives the connection signal.

3. The pipeline purging device according to claim 1, characterized in that, The control component includes a time relay, which is used to set a preset purging duration; The time relay is also used to control the valve assembly to open and to close the valve assembly after the preset purging time.

4. The pipeline purging device according to claim 1, characterized in that, The power module includes an overload protection component to prevent the control module from being damaged due to current overload.

5. The pipeline purging device according to claim 1, characterized in that, The connection structure includes a connector body, a housing, a connection component, and a sealing ring arranged coaxially; The connector body has a channel inside for the purge gas to pass through; the end of the connector body near the target pipeline has a guide cone for guiding the insertion of the target pipeline; The outer shell surrounds the connector body and together with the connector body forms a receiving cavity; The connecting component is located within the receiving cavity and is used for movable connection with the target pipeline; The sealing ring is located inside the receiving cavity and is used to form a seal with the outer wall of the target pipeline when the target pipeline is inserted; wherein, the sealing ring and the guide cone are located on both sides of the connecting assembly.

6. The pipeline purging device according to claim 1, characterized in that, The connection structure is used to connect at least two target pipelines with different outer diameters.

7. The pipeline purging device according to claim 1, characterized in that, The gas module includes a gas storage component for storing the purge gas; The purging gas includes an inert gas.

8. The pipeline purging device according to claim 1, characterized in that, The valve assembly includes a solenoid valve.

9. The pipeline purging device according to claim 1, characterized in that, The pipeline purging device also includes a noise reduction component.

10. The pipeline purging device according to claim 9, characterized in that, The material of the noise reduction component includes porous sound-absorbing material.

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