Anti-leakage device and equipment for extraction section in ultra-high molecular weight polyethylene fiber production

Abstract

The utility model provides an anti-leakage device and equipment for an extraction section in ultra-high molecular weight polyethylene fiber production, the anti-leakage device comprises a gas slow-release cover, the gas slow-release cover comprises a mounting part, the gas slow-release cover is connected with the peripheral side of a leakage site of an extraction device through the mounting part, the mounting part comprises a gas inlet and a sealing piece surrounding the gas inlet, and the sealing piece is connected with the gas inlet; the gas slow-release cover is hermetically connected with the extraction device through a sealing piece; at least part of the gas guide channel assembly extends in the gas slow release cover, and the gas guide channel assembly comprises at least one gas inlet located in the gas slow release cover; and the air extractor is connected with the air guide channel assembly. The sealing piece and the gas slow-release cover are combined, so that double barriers are formed, the collection efficiency of leaked extraction agent gas is greatly improved, the extraction agent gas is conveyed to a target position through cooperation of the gas guide channel assembly and the gas extraction device, the concentration of harmful gas in a workshop can be remarkably reduced, and the harmful gas meets the occupational health standard.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of organic gas leakage prevention, in particular to an anti-leakage device for an extraction section of ultra-high molecular weight polyethylene fiber production and equipment. BACKGROUND

[0002] In the production process of the ultra-high molecular weight polyethylene fiber, volatile organic solvents are usually used as extractants in the extraction section, and the prior art adopts the method of adding an air extraction pipeline in the extraction device to prevent the organic gas from volatilizing by extracting a slight negative pressure.

[0003] The slight negative pressure cannot completely inhibit the overflow of the organic gas, especially in the high-temperature season in summer, the volatilization amount of the extractant is relatively large, and the slight negative pressure in the extraction device is difficult to maintain, so that the extractant leaks into the environment and has an uncontrollable impact on the environment. In addition, the extraction device needs to be opened for operation during the start and stop of the production line and the inspection and maintenance process, which destroys the negative pressure environment in the device and causes the overflow of the extractant. SUMMARY

[0004] The application provides an anti-leakage device for an extraction section of ultra-high molecular weight polyethylene fiber production and extraction equipment, which can reduce the escape of the extractant gas into the environment.

[0005] In a first aspect, the application provides an anti-leakage device for an extraction section of ultra-high molecular weight polyethylene fiber production, which comprises: a gas slow-release cover, comprising a mounting portion, the gas slow-release cover being connected to the side of a leakage site of an extraction device through the mounting portion, the mounting portion comprising a gas inlet and a sealing element arranged around the gas inlet, and the gas slow-release cover being connected to the extraction device in a sealed manner through the sealing element; a gas guide channel assembly, at least part of the gas guide channel assembly extending inside the gas slow-release cover, the gas guide channel assembly comprising at least one gas inlet located inside the gas slow-release cover; and an air extraction device connected to the gas guide channel assembly; wherein the extractant gas leaked from the leakage site of the extraction device is blocked by the gas slow-release cover, and part of the extractant gas directly enters the gas guide channel assembly through the at least one gas inlet, and the other part of the extractant gas enters the gas guide channel assembly through the at least one gas inlet after moving in the gas slow-release cover, and the air extraction device can guide the extractant gas in the gas guide channel assembly to a target site.

[0006] According to the embodiment of the first aspect of the application, the gas guide channel assembly comprises a first channel and a second channel, the first channel extends in a first direction inside the gas slow-release cover, and the second channel extends in a second direction inside the gas slow-release cover; and the first direction and the second direction are arranged in an intersecting manner.

[0007] According to the embodiment of the first aspect of the application, the first direction is the direction of gravity, the first channel comprises a first gas inlet, and the distance between the first gas inlet and the gas inlet is 0-25 cm.

[0008] According to the embodiment of the first aspect of the present application, the first air inlet is trumpet-shaped.

[0009] According to the embodiment of the first aspect of the present application, the gas release cover has a top wall and a bottom wall arranged oppositely in the direction of gravity, and the second channel extends along the bottom wall.

[0010] According to the embodiment of the first aspect of the present application, the second channel is provided with at least one through hole.

[0011] According to the embodiment of the first aspect of the present application, the gas release cover is further provided with a gas supplementing port, which is arranged on the side of the mounting portion away from the air guide channel assembly.

[0012] In the second aspect, the embodiment of the present application provides an extraction device for the production of ultra-high molecular weight polyethylene fibers, which comprises an extraction device and the above-mentioned anti-leakage device for the extraction section of the production of ultra-high molecular weight polyethylene fibers. The gas release cover of the anti-leakage device for the extraction section of the production of ultra-high molecular weight polyethylene fibers is in communication with the leakage site of the extraction device and forms a sealed cavity structure.

[0013] According to the embodiment of the second aspect of the present application, the gas release cover is detachably connected with the leakage site.

[0014] According to the embodiment of the second aspect of the present application, the extraction device is provided with a third channel, which penetrates from the outside of the extraction device to the inside of the extraction device. The third channel can directly guide the extraction agent gas in the inside of the extraction device out.

[0015] The anti-leakage device for the extraction section of the production of ultra-high molecular weight polyethylene fibers provided by the embodiment of the present application combines the sealing element with the gas release cover, forming a double barrier, which greatly improves the collection efficiency of the leaked extraction agent gas. The extraction agent gas is transported to the target site through the cooperation of the air guide channel assembly and the air extraction device, which can significantly reduce the concentration of harmful gas in the workshop and make it meet the occupational health standards. At the same time, atmospheric pollution is avoided, and the cost of environmental compliance of enterprises is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to scale.

[0017] Figure 1 A sectional view structural schematic diagram of the anti-leakage device for the extraction section of the production of ultra-high molecular weight polyethylene fibers provided by the embodiment of the present application;

[0018] Figure 2 A sectional view structural schematic diagram of the extraction device for the production of ultra-high molecular weight polyethylene fibers provided by the embodiment of the present application;

[0019] Figure 3 The figure shows the flow direction of the extraction agent gas of the extraction equipment for the production of ultra-high molecular weight polyethylene fibers according to the embodiments of the present application.

[0020] Explanation of reference numerals:

[0021] 100, leakage prevention device for the extraction section of the production of ultra-high molecular weight polyethylene fibers; 110, gas slow-release cover; 111, mounting portion; 112, gas inlet; 113, sealing member; 114, top wall; 115, bottom wall; 116, air supplementing port; 120, gas guide channel assembly; 121, first channel; 121a, first gas inlet; 122, second channel; 122a, second gas inlet; 122b, through hole; 130, air extraction device.

[0022] 200, extraction device; 201, leakage site; 210, extraction tank; 220, third channel;

[0023] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0024] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some of these specific details. The description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscuring of the present application; and, for clarity, the dimensions of some of the structures can be exaggerated. Furthermore, features, structures or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0025] In addition, the dimensions and thicknesses of each configuration shown in the drawings are arbitrarily shown for understanding and ease of description, but the present concept is not limited thereto. In the drawings, the thicknesses of layers, films, panels, and regions, etc. are exaggerated for clarity. In the drawings, the thicknesses of some layers and regions are exaggerated for better understanding and ease of description.

[0026] In addition, unless explicitly described to the contrary, the word "comprise" will be understood to imply the inclusion of stated components but not the exclusion of any other components.

[0027] During the high-temperature state or the start and stop of the production line and the inspection and maintenance process, it is difficult to maintain the slight negative pressure in the extraction device, which can easily cause the overflow of the extraction agent. The inventors of the present application have noticed that the air suction cover has low collection efficiency and cannot completely and effectively capture the volatile extraction agent gas.

[0028] In view of the above problems, the present application provides an anti-leakage device for the extraction section of ultra-high molecular weight polyethylene fiber production and an extraction equipment for the extraction section of ultra-high molecular weight polyethylene fiber production, which can reduce the escape of extraction agent gas to the environment.

[0029] For a better understanding of the present application, please refer to Figures 1 to 3 , the first aspect, the present application provides an anti-leakage device for the extraction section of ultra-high molecular weight polyethylene fiber production 100, including: gas slow release cover 110, including installation part 111, gas slow release cover 110 is connected with the leakage site 201 of the extraction device 200 through the installation part 111, the installation part 111 includes gas inlet 112 and sealing element 113 arranged around the gas inlet 112, the gas slow release cover 110 is connected with the extraction device 200 through the sealing element 113; Gas guide channel assembly 120, at least part of the gas guide channel assembly 120 extends inside the gas slow release cover 110, the gas guide channel assembly 120 includes at least one gas inlet inside the gas slow release cover 110; The gas extraction device 130 is connected with the gas guide channel assembly 120; Wherein, the extraction agent gas leaked from the leakage site 201 of the extraction device 200 is blocked by the gas slow release cover 110, and a part of it directly enters the gas guide channel assembly 120 through the at least one gas inlet, and the other part moves in the gas slow release cover 110 to the at least one gas inlet and enters the gas guide channel assembly 120, and the gas extraction device 130 can guide the extraction agent gas in the gas guide channel assembly 120 to the target site.

[0030] In the production of ultra-high molecular weight polyethylene fiber, mineral oil is usually used to dissolve ultra-high molecular weight polyethylene to form a uniform spinning solution, and then the gel precursor is obtained by spinning, and the gel precursor is extracted by the extraction device 200 in the extraction section to remove the mineral oil contained in the yarn. For example, the extraction agent can be dichloromethane or xylene organic solvent. When the micro-negative pressure of the extraction device 200 is destroyed, the extraction agent is easy to overflow to the environment, causing pollution to the environment.

[0031] The anti-leakage device for the extraction section of ultra-high molecular weight polyethylene fiber production in the present application 100 is suitable for the extraction device 200, including the gas slow release cover 110, the gas guide channel assembly 120 and the gas extraction device 130, which can effectively limit the diffusion of extraction agent gas to the workshop environment. The gas slow release cover 110 is connected to the leakage site 201 around the extraction device 200 through the installation part 111, and the installation part 111 has the gas inlet 112 and the sealing element 113 to ensure airtight connection. Part of the extraction agent gas leaked directly enters the gas inlet, and the other part enters after moving in the gas slow release cover 110. The gas guide channel assembly 120 extends inside the gas slow release cover 110 and has at least one gas inlet. The gas extraction device 130 is connected to the gas guide channel assembly 120 to guide the extraction agent gas to the target position.

[0032] Please continue to refer to Figures 1 to 3 , specifically, the gas release cover 110 is connected to the leakage site 201 of the extraction device 200 through the mounting portion 111, and the mounting portion 111 is provided with a gas inlet 112 and a sealing member 113, such as an elastic sealing ring, arranged around the gas inlet 112, so as to ensure airtight connection with the leakage site 201 of the flange, valve and the like of the extraction device 200. The gas release cover 110 is responsible for blocking the leakage site 201 of the extraction device 200 to prevent the extraction agent gas from spreading to the surrounding environment uncontrolled.

[0033] When the extraction agent gas escapes from the leakage site 201, the gas release cover 110 forms a first physical barrier with the sealing member 113, effectively limiting the spread of the extraction agent gas to the workshop environment.

[0034] After the extraction agent gas enters the gas release cover 110, part of the extraction agent gas directly enters the pipeline through the gas inlet of the gas guide channel assembly 120 under the action of the negative pressure generated by the air extraction device 130, and the extraction agent gas not directly collected forms a vortex in the gas release cover and moves to the gas inlet under the action of the negative pressure generated by the air extraction device 130, thereby achieving secondary collection.

[0035] The embodiments of the present application do not limit the specific shape and size of the gas inlet 112, and the gas inlet 112 can be adapted to various specifications of the extraction device 200 and complex and diverse leakage sites 201.

[0036] Exemplarily, the shape of the gas inlet 112 can be a regular geometric shape such as a circle, a square, an ellipse, etc. Among them, the circular gas inlet 112 can make the gas flow more smooth, and the extraction agent gas passing through can have relatively small resistance, which can effectively reduce energy loss, so that the extraction agent gas can efficiently enter the gas guide channel assembly 120.

[0037] In the embodiments of the present application, the size of the gas inlet 112 can be determined according to the actual area of the leakage site 201 of the extraction device 200, the gas leakage rate, the air extraction capacity of the air extraction device 130 and other factors. If the leakage site 201 has a large area and the gas leakage rate is fast, the size of the gas inlet 112 can be increased accordingly to ensure that the leaked extraction agent gas can be collected in time and effectively, and prevent a large amount of gas from accumulating in the gas release cover 110. For some leakage sites 201 with small area and low gas leakage rate, a smaller size of the gas inlet 112 can meet the demand, which not only avoids unnecessary gas disturbance caused by a too large gas inlet 112, but also reduces the manufacturing cost and complexity of the device.

[0038] In addition, the gas inlets 112 can also be combined in various combinations. For example, multiple small gas inlets 112 are combined and distributed, which is suitable for scenarios where the gas leakage direction is relatively dispersed. They can be distributed at different positions of the gas slow-release cover 110 to collect gas from various angles, ensuring that there is no omission. Mixing and matching different shapes and sizes of gas inlets 112 can further optimize the gas collection effect. For example, a large circular gas inlet 112 is arranged near the center of the leakage site 201 to preferentially collect a large amount of gushing gas, and a plurality of small square gas inlets 112 are arranged in the peripheral area to capture residual gas diffusing in all directions, thereby achieving omnidirectional and efficient collection of the extractant gas.

[0039] The embodiments of the present application do not limit the specific shape and size of the gas slow-release cover 110, and the shape and size thereof can be customized according to the shape and size of the part where the leakage site 201 of the extraction device 200 is located, so as to ensure that the gas slow-release cover 110 can completely cover the side of the leakage site 201.

[0040] In terms of shape profile, the gas slow-release cover 110 can be designed in various styles. Exemplarily, referring to Figure 1 , the gas slow-release cover 110 is in the shape of a cuboid, and the gas inlets 112 are located on one side surface of the cuboid-shaped shell. After the gas escapes from the leakage site 201, it enters the interior of the cuboid-shaped shell through the gas inlets 112, and the cuboid-shaped shell provides a closed space for the extractant gas, which helps to concentrate the collection of the gas and reduce the diffusion of the gas in the surrounding environment.

[0041] In addition, the gas slow-release cover 110 can also be designed in an irregular shape according to the special structure of the extraction device 200. For example, when there are other protruding components or pipelines and other obstacles around the leakage site 201 of the extraction device 200, the gas slow-release cover 110 can be designed to bypass these obstacles and closely fit the irregular shape of the contour around the leakage site 201. Through this customized design, the gas slow-release cover 110 can effectively block the leakage site 201 without interfering with other components around it.

[0042] In terms of size, the size of the gas slow-release cover 110 can be determined by considering multiple factors. If the area of the leakage site 201 of the extraction device 200 is large and the gas leakage rate is high, in order to timely and effectively block and collect the gas, the size of the gas slow-release cover 110 needs to be increased accordingly. For example, when the area of the leakage site 201 reaches 0.5 square meters and the estimated gas leakage rate reaches 50 liters per minute, the length and width of the bottom surface of the gas slow-release cover 110 can be set to 1-2 meters, and the height can be set to 1-3 meters, which can better meet the collection requirements and prevent a large amount of gas from escaping into the environment.

[0043] For some cases where the area of the leakage site 201 is small and the gas leakage rate is low, a smaller size of the gas release cover 110 can meet the requirements. This not only saves material costs, but also avoids the inconvenience caused by the excessive space occupied by the oversized gas release cover 110 to the production operation.

[0044] The embodiments of the present application do not limit the material of the gas release cover 110, which can be selected from high polymer materials or metal materials. The material can withstand the corrosion of the extractant gas and the temperature change in the production process, ensuring the long-term stable operation of the device. Exemplarily, the material of the gas release cover 110 is selected from polytetrafluoroethylene with high strength, high temperature resistance and good chemical corrosion resistance.

[0045] The embodiments of the present application do not limit the material of the sealing member 113, which can achieve the sealing effect. Exemplarily, the sealing member 113 is a compressible elastic sealing ring made of high-quality silicone rubber material. Silicone rubber has excellent elasticity and chemical resistance, and can maintain good sealing performance in different working environments. The cross-sectional diameter of the sealing ring is adapted to the groove width of the mounting part 111, so that the sealing ring can be fully compressed when the mounting bolt is tightened, achieving close fitting with the extraction device 200 and effectively preventing gas leakage.

[0046] Part of the gas guide channel assembly 120 extends inside the gas release cover 110, and the gas inlet thereof can be distributed in the internal area of the cover body close to the leakage site 201. Part of the pipeline of the gas guide channel assembly 120 and the gas inlet at the end thereof extend and distribute inside the gas release cover 110. When the extractant gas escapes from the leakage site 201, part of the gas will directly flow to the gas inlet close to the leakage site 201 under the space limitation of the gas release cover 110, and enter the branch pipeline of the gas guide channel assembly 120. Another part of the gas moves around in the gas release cover 110, but due to the specific shape profile of the gas release cover 110, these gases will eventually move to the gas inlet and enter the gas guide channel assembly 120. The cooperation of the gas release cover 110 and the gas guide channel assembly 120 ensures that there is almost no accumulation of a large amount of gas in the gas release cover 110, ensuring the timely capture of the leaked gas.

[0047] In the embodiments of the present application, the gas guide channel assembly 120 can include a main channel and branch channels.

[0048] The main channel can be designed with a larger pipe diameter, exemplarily, the pipe diameter is 80-150 mm. The larger pipe diameter can ensure smooth flow of the gas in the main channel during high-speed gas extraction, reducing the gas congestion and pressure loss caused by too small pipe diameter; the branch channels are distributed in a radial manner from the main channel or according to the internal space layout of the gas release cover 110.

[0049] The branch channels can have a smaller diameter than the main channel, and the diameter can be 20-50 mm. They can branch off at an angle, such as 30°-90°, from the main channel to better adapt to the flow direction of the gas in the gas release cover 110. The ends of the multiple branch channels correspond to multiple gas inlets, and the number and distribution of the gas inlets need to be optimized according to the shape and size of the gas release cover 110, the possible location of the leakage site 201, and the movement of the extractant gas in the gas release cover 110.

[0050] In the embodiments of the present application, the diameters of the main channel and the branch channels can also be the same.

[0051] Exemplarily, in some large gas release cover 110, in order to fully cover the possible gas leakage area, several or up to dozens of branch channels can be provided, and the gas inlets are uniformly distributed at different heights and positions inside the gas release cover 110, to ensure that the extractant gas escaping in any direction can be captured in time.

[0052] In the embodiments of the present application, the gas guide channel assembly 120 can also include multiple gas channels arranged independently of each other. They can be distributed at different angles in the gas release cover 110 to better adapt to the flow direction of the gas in the gas release cover 110. The end of each gas channel corresponds to a gas inlet, which facilitates independent control of the operating state of each gas channel, and the gas suction rate of the gas suction device 130 can be adjusted according to the actual flow rate and pressure of the gas in different gas channels.

[0053] The embodiments of the present application do not limit the material of the gas guide channel assembly 120, and any material with good corrosion resistance and certain strength can be selected, which can be a metal material or a polymer material. Considering that the extractant gas can be corrosive, stainless steel such as 316L stainless steel can be selected, which has excellent corrosion resistance and can effectively resist the corrosion of the extractant gas, ensuring the long-term stable operation of the gas guide channel assembly 120. For some application scenarios with strict weight requirements and relatively weak corrosion, high-strength corrosion-resistant plastics such as polyvinylidene fluoride (PVDF) can also be used, which not only has a lighter weight, facilitating installation and maintenance, but also meets the basic needs of the device in terms of corrosion resistance.

[0054] In the embodiments of the present application, the gas guide channel assembly 120 can exist independently in part of the gas release cover 110, that is, the gas guide channel assembly 120 is not attached to the inner wall of the gas release cover 110, and the gas guide channel assembly 120 exists in the interior of the gas release cover 110 by its own structure; or the gas guide channel assembly 120 can exist attached to the inner wall of the gas release cover 110, for example, the outer wall of the gas guide channel assembly 120 is attached to the inner wall of the gas release cover 110 to support the gas guide channel assembly 120, or the inner wall of the gas release cover 110 can be part of the gas guide channel assembly 120 and participate in the delivery process of the extractant gas.

[0055] When the gas guide channel assembly 120 is connected with the air extraction device 130, the interface types of the two need to be adapted, which can be threaded connection or plug-in connection, as long as the tightness and stability of the connection are ensured to realize efficient extraction of the gas in the gas guide channel assembly 120 by the air extraction device 130.

[0056] In some embodiments, in order to further optimize the flow of gas in the gas guide channel assembly 120, a flow guide structure such as a spiral flow guide fin or a smooth flow guide coating can be arranged on the inner wall of the pipeline. The spiral flow guide fin can guide the gas to form a spiral flow in the pipeline, increase the flow rate of the gas, reduce the residence time of the gas in the pipeline, and improve the collection efficiency; the smooth flow guide coating can reduce the friction between the gas and the inner wall of the pipeline, so that the gas flows more smoothly and the energy loss is reduced. Through these carefully designed structures, material selection and connection methods, the gas guide channel assembly 120 can efficiently deliver the extractant gas collected from the gas release cover 110 to the air extraction device 130, thereby realizing effective prevention of external leakage of the extractant gas and ensuring the safety and environmental protection of the ultra-high molecular weight polyethylene fiber production process.

[0057] The air extraction device 130 is a power source that provides suction force for the delivery of the extractant gas, and the air extraction device 130 is used to maintain a negative pressure environment in the gas guide channel assembly 120. The pipeline of the gas guide channel assembly 120 is connected with the air extraction device 130, and after the air extraction device 130 is started, a negative pressure environment is formed in the pipeline of the gas guide channel assembly 120. This negative pressure will be transmitted along the pipeline of the gas guide channel assembly 120 to the gas inlet. Since the gas pressure at the gas inlet is lower than the gas pressure inside the gas release cover 110, the extractant gas will be sucked into the pipeline of the gas guide channel assembly 120 from the gas release cover 110 through the gas inlet under the action of the pressure difference, and finally be extracted by the air extraction device 130 and delivered to the target site such as a waste gas treatment system or a recycling device. The air extraction rate of the air extraction device 130 can be adjusted according to the actual flow and pressure of the gas in the gas guide channel assembly 120 to ensure stable and efficient operation.

[0058] Exemplarily, an adjusting valve is further installed on the pipeline of the gas guiding channel assembly 120 to control the gas flow.

[0059] Exemplarily, the gas extraction device 130 can be a variable frequency vacuum pump or a fan, which can transport the collected gas to a recycling device or a processing system through the gas guiding channel.

[0060] Exemplarily, the gas extraction device 130 can select a variable frequency vacuum pump as the core gas extraction equipment, and the gas extraction rate can be flexibly adjusted according to the actual production demand, which can effectively deal with different degrees of extraction agent gas leakage.

[0061] In some embodiments, a pressure sensing assembly is arranged in the gas buffer cover 110, which can monitor the pressure change in the pipeline in real time and transmit the data to the control system. Once the pressure exceeds the set threshold, indicating that the leakage amount of the extraction device 200 increases, the control system adjusts the gas extraction rate of the variable frequency vacuum pump to increase the gas extraction effort, so as to ensure that the gas guiding channel always maintains a stable negative pressure environment and efficiently collects the leaked gas.

[0062] In summary, in the anti-leakage device in the embodiments of the present application, the sealing element 113 is combined with the gas buffer cover 110 to form a double barrier, which greatly improves the collection efficiency of the leaked extraction agent gas, and the extraction agent gas is transported to the target position through the cooperation of the gas guiding channel assembly 120 and the gas extraction device 130, which can significantly reduce the concentration of harmful gas in the workshop and make it meet the occupational health standards. At the same time, atmospheric pollution is avoided, and the cost of environmental protection compliance of the enterprise is reduced.

[0063] The combination of the sealing element 113 and the gas buffer cover 110 makes the leakage of the leaked extraction agent gas controllable. For production lines with more leakage sites 201, effective collection can be performed from the source. Compared with the open gas collection cover, the gas buffer cover 110 can reduce the collection air volume, ensuring efficient collection while optimizing the use of energy.

[0064] In the embodiments of the present application, each component can be designed in a modular manner, which can be flexibly adjusted according to different specifications of the extraction device 200. Whether it is a large-scale industrial production equipment or a small-scale experimental device, it can be quickly and conveniently installed, and the maintenance and replacement of parts are convenient and efficient.

[0065] Please refer to Figure 1 and Figure 3 In some embodiments, the gas guiding channel assembly 120 includes a first channel 121 and a second channel 122, the first channel 121 extends in a first direction X in the gas buffer cover 110, and the second channel 122 extends in a second direction Y in the gas buffer cover 110; the first direction X and the second direction Y are arranged intersectingly.

[0066] The gas guiding channel assembly 120 comprises channel structures extending in different directions within the gas buffer cover 110, i.e. a first channel 121 and a second channel 122, the first channel 121 extending in a first direction X, the second channel 122 extending in a second direction Y, and the first direction X and the second direction Y being arranged in intersecting manner. Such intersecting arrangement expands the collection range of the gas guiding channel assembly 120 for the gas.

[0067] Please refer to Figure 3 , Figure 3 The arrow direction in the above figure shows the flow direction of the extractant gas within the gas buffer cover 110. When the extractant gas escapes from the leakage site 201, a part of the gas will directly flow to the gas inlet of the first channel 121 which is located relatively close to the leakage site 201, and enter the first channel 121, under the space limitation of the gas buffer cover 110. Another part of the gas will move around within the gas buffer cover 110. Due to the sealing property of the gas buffer cover 110, these gases can finally move to the gas inlets of the second channels 122 which are distributed in different positions and intersect with the first channel 121, and enter the second channels 122. Through the cooperation of the intersecting arrangement of the first channel 121 and the second channel 122, there will be almost no large amount of gas accumulated within the gas buffer cover 110, which ensures the timely capture of the leaked gas.

[0068] Exemplarily, the second direction Y and the first direction X are arranged in perpendicular intersecting manner. When the gas escapes from the leakage site 201 and enters the gas buffer cover 110, a part of the gas will be directly captured by the first channel 121, while another part of the gas may diffuse in the vertical direction due to the initial diffusion direction or gravity. At this time, the second channel 122 can effectively collect this part of the gas. The pipe diameter and material selection of the second channel 122 can be the same as or different from those of the first channel 121.

[0069] When the gas guiding channel assembly 120 comprises a main channel and branch channels, the first channel 121 and the second channel 122 are branch channels, and the first channel 121 and the second channel 122 finally converge into the main channel, the main channel of the gas guiding channel assembly 120 is connected with the gas extraction device 130, and the gas extraction device 130 provides suction force for the transport of the extractant gas. After the gas extraction device 130 is started, a negative pressure environment is formed in the main channel. The negative pressure is transmitted to the branch channels of the first channel 121 and the second channel 122 along the main channel, and then acts on the respective gas inlets. Because the gas pressure at the gas inlets is lower than the gas pressure in the gas buffer cover 110, the extractant gas is sucked into the corresponding branch channels through the gas inlets of the first channel 121 and the second channel 122 under the action of the pressure difference, and then converges into the main channel through the branch channels, and finally is extracted by the gas extraction device 130 and transported to the target position. Because the first channel 121 and the second channel 122 intersect, the gas can be preliminarily mixed and buffered in the channels in different directions before entering the main channel, which further optimizes the stability and uniformity of the gas entering the gas extraction device 130, avoids damage to the gas extraction device 130 caused by local gas flow mutation, and prolongs the service life of the entire system.

[0070] In the embodiments of the present application, the first channel 121 and the second channel 122 can also exist independently of each other, and the operating state of the first channel 121 and the second channel 122 can be independently controlled. For example, the first channel 121 captures high-concentration extractant gas, and the second channel 122 captures low-concentration extractant gas. The gas extraction rate of the gas extraction device 130 can be adjusted according to the actual flow and pressure of the gas in the different gas channels.

[0071] The gas extraction device 130 connected with the first channel 121 and the gas extraction device 130 connected with the second channel 122 can be the same or different.

[0072] Please continue to refer to Figure 1 In some embodiments, the first direction X is the direction of gravity, the first channel 121 comprises a first gas inlet 121a, and the distance between the first gas inlet 121a and the gas inlet 112 is 0-25 cm.

[0073] The first channel 121 extends along the direction of gravity. On the one hand, the first channel 121 can effectively capture the gas affected by gravity and sinking downward, because the gas released from the leakage site 201 generally has a downward movement trend due to the combined action of its own gravity and the surrounding airflow. On the other hand, the leakage site 201 of the extraction device 200 is generally a manhole located on the side of the extraction device 200, and the gas inlet 112 of the gas release cover 110 is located on the sidewall of the gas release cover 110. The first channel 121 extending along the direction of gravity is conducive to the first gas inlet 121a being close to the gas inlet 112 of the gas release cover 110, so as to inhale the high-concentration extraction agent gas in the first time.

[0074] The distance between the first gas inlet 121a of the first channel 121 and the gas inlet 112 of the gas release cover 110 is limited to a range of 0-25 cm. Within this distance range, the first gas inlet 121a can be closest to the leakage site 201. When the extraction agent gas escapes from the leakage site 201, it quickly sinks due to gravity. The first gas inlet 121a with such a close distance can inhale these gases into the first channel 121 in the first time. For example, in actual application, when the leakage site 201 is located at the bottom of the gas release cover 110 and the connection between the extraction device 200, the first gas inlet 121a is 5 cm away from the mounting hole, a large amount of directly sinking gas can be quickly captured, greatly improving the collection efficiency of the initial leakage gas.

[0075] Please continue to refer to Figure 1 In some embodiments, the first gas inlet 121a is trumpet-shaped.

[0076] The first channel 121 includes a trumpet-shaped first gas inlet 121a, and the large end of the trumpet-shaped first gas inlet 121a faces outward, which can expand the gas collection range. Even if there is a certain deviation in the diffusion direction of the gas, the trumpet-shaped first gas inlet 121a can also effectively collect the gas sinking within a certain range by virtue of its larger opening area.

[0077] The trumpet-shaped structure can naturally guide and converge the extraction agent gas. When the extraction agent gas escapes from the leakage site 201 and sinks under gravity, the inner wall of the trumpet-shaped structure can guide the gas to gradually converge to the center and then smoothly enter the inside of the first channel 121. This guiding effect makes the flow rate of the gas more stable when entering the gas inlet, reduces the turbulence and energy loss of the gas, and further improves the efficiency and stability of gas collection.

[0078] Inside the gas release cover 110, the flow of gas is not completely regular, and can be affected by the shape of the cover, temperature difference, and other components, resulting in complex changes in the gas flow. The trumpet-shaped gas inlet can better adapt to these changes in the gas flow, and can continue to effectively collect gas even when the direction of the gas flow is variable.

[0079] Please continue to read Figure 1 In some embodiments, the gas release cover 110 has a top wall 114 and a bottom wall 115 arranged opposite in the direction of gravity, and the second channel 122 extends along the bottom wall 115.

[0080] The second channel 122 extends along the bottom wall 115, expanding the ability to capture gas in the bottom area. After the extractant gas escapes from the leakage site 201, a part of it sinks to the bottom of the gas release cover 110 due to gravity. At this time, the second channel 122 extending along the bottom wall 115 can directly and closely collect these gases accumulated at the bottom.

[0081] The second channel 122 extending along the bottom wall 115 forms a cooperative collection system with the first channel 121, which extends in the direction of gravity and is mainly responsible for collecting gas that has just entered the gas release cover 110; while the second channel 122 extends along the bottom wall 115 and can capture the gas that sinks due to gravity. They work together to form a three-dimensional gas collection network.

[0082] In addition, the second channel 122 extending along the bottom wall 115 not only meets the efficient collection of gas, but also optimizes the spatial layout and cost structure of the entire device. It makes full use of the space at the bottom of the gas release cover 110, avoids the need for additional complex pipeline layout or equipment to collect bottom gas, and reduces the manufacturing cost of the device. Moreover, due to the improved gas collection efficiency, the waste of extractant gas and the pollution to the environment are reduced, which has good economic and environmental benefits.

[0083] Please continue to read Figure 1 In some embodiments, the second channel 122 is provided with at least one through hole 122b.

[0084] The presence of the through hole 122b further expands the collection range of the second channel 122 for gas. When the extractant gas diffuses at the bottom of the gas release cover 110, it can not only enter through the second gas inlet 122a of the second channel 122, but also be sucked into the channel from the through hole 122b. This is beneficial for collecting gas that is diffused in a diffuse state at the bottom and has a very dispersed diffusion direction. For example, at the bottom of the gas release cover 110, the gas can be diffused in the form of a very small gas flow group in all directions. At this time, the through hole 122b on the second channel 122 can capture the gas that drifts from the area that is difficult to reach by the second gas inlet 122a, further reducing the residual amount of gas in the bottom area.

[0085] The second passage 122 provided with the through hole 122b is more closely matched with the gas release cover 110, can more comprehensively deal with the complex gas flow at the bottom, collects as much gas as possible in each corner of the space at the bottom of the gas release cover 110, and further improves the blocking and collecting effect of the gas release cover 110 on the leaked gas. When matched with the air extraction device 130, the air extraction device 130 can work more stably through the adjustment of the pressure in the passage by the through hole 122b, damage to the air extraction device 130 caused by excessive pressure fluctuation is avoided, the service life of the air extraction device 130 is prolonged, and the energy consumption of the entire anti-leakage device is optimized, so that the gas can be collected efficiently while the energy consumption is low, and good comprehensive benefits are obtained.

[0086] The number of the through hole 122b is not limited in the embodiments of the present application, and can be set as needed. For example, the number of the through hole 122b is 3-7.

[0087] Please continue to refer to Figure 1 In some embodiments, the gas release cover 110 is further provided with a gas supplement port 116, and the gas supplement port 116 is arranged on the side of the mounting portion 111 away from the gas guide passage assembly 120.

[0088] When the gas supplement port 116 of the gas release cover 110 is arranged on the side of the mounting portion 111 away from the gas guide passage assembly 120, it has many unique beneficial effects.

[0089] The gas release cover 110 is further provided with the gas supplement port 116 to adjust the air pressure balance inside the gas release cover 110. During the operation of the air extraction device 130, the gas guide passage assembly 120 continuously extracts the extractant gas, so that the air pressure inside the gas release cover 110 decreases. For example, in some large extraction devices 200, the air extraction rate is fast, and the air pressure inside the gas release cover 110 decreases rapidly. At this time, the gas supplement port 116 at this position can let the appropriate external air enter. The pressure burden of the sealing part of the gas release cover 110 can be reduced, the premature wear or damage of the sealing element 113 caused by air pressure imbalance can be effectively avoided, the risk of gas leakage from the sealing part is reduced, and the service life of the sealing structure is prolonged.

[0090] The gas supplement port 116 is arranged on the side of the mounting portion 111 away from the gas guide passage assembly 120, and the supplemented air can be fully mixed with the extractant gas in the initial stage of gas leakage. In the complex gas flow environment inside the gas release cover 110, the extractant gas that may have been diffused in disorder can flow more regularly towards the gas guide passage assembly 120 under the driving of the supplemented air.

[0091] The number of the air supplementing ports 116 is not limited in the embodiments of the present application, and can be set as required. For example, the number of the through holes 122b is 1-3.

[0092] Please refer to Figure 2 and Figure 3 In the second aspect, the embodiments of the present application provide an extraction device for the production of ultra-high molecular weight polyethylene fibers, which comprises an extraction device 200 and the above-mentioned anti-external leakage device 100 for the extraction section of the production of ultra-high molecular weight polyethylene fibers. The gas slow-release cover 110 of the anti-external leakage device 100 for the extraction section of the production of ultra-high molecular weight polyethylene fibers is in communication with the leakage site 201 of the extraction device 200 and forms a sealed cavity structure.

[0093] The extraction device 200 comprises an extraction tank 210 for containing an extraction agent. In the working state, the extraction tank 210 contains a large amount of extraction agent for extraction to remove the mineral oil contained in the yarn. The interior of the extraction device 200 is filled with a large amount of volatile extraction agent gas. When the micro-negative pressure state of the extraction device 200 is destroyed, the extraction agent gas is prone to escape from the extraction device 200.

[0094] The extraction device for the production of ultra-high molecular weight polyethylene fibers provided in the embodiments of the present application comprises the anti-external leakage device 100 for the extraction section of the production of ultra-high molecular weight polyethylene fibers of the first aspect. The combination of the sealing member 113 and the gas slow-release cover 110 forms a double barrier, which greatly improves the collection efficiency of the extraction agent gas leaked from the extraction device 200. The extraction agent gas is transported to the target site by the cooperation of the gas guide channel assembly 120 and the air extraction device 130, which can significantly reduce the concentration of harmful gas in the workshop and make it meet the occupational health standards. At the same time, atmospheric pollution is avoided, and the cost of the enterprise in the aspect of environmental protection compliance is reduced.

[0095] In the embodiments of the present application, the extraction device 200 is a device for extracting and removing the mineral oil contained in the yarn in the extraction section of the production line of ultra-high molecular weight polyethylene fibers. For example, the extraction device 200 is a three-roller machine or a single-roller machine. The extraction device 200 can also be other devices that can realize the extraction function, and the present application is not limited thereto.

[0096] Please continue to refer to Figure 2 and Figure 3 In some embodiments, the gas slow-release cover 110 is detachably connected with the leakage site 201.

[0097] During the long-term operation of the extraction device 200, both the extraction device 200 and the surrounding components of the leakage site 201 can have problems such as wear and tear, aging, etc., and need to be maintained regularly. Since the gas release cover 110 is detachably connected with the leakage site 201, maintenance personnel can easily remove the gas release cover 110 from the leakage site 201, thereby facilitating comprehensive inspection, cleaning and maintenance of the extraction device 200 and the leakage site 201 and the surrounding related components, ensuring that the extraction device 200 and the gas release cover 110 always maintain good working condition, and effectively improving the maintenance efficiency and reliability of the extraction equipment for producing ultra-high molecular weight polyethylene fibers.

[0098] During different production stages or due to process adjustment, the extraction device 200 may have the phenomenon that the position of the leakage site 201 changes or the leakage condition changes. The detachable connection design of the gas release cover 110 can cope with these changes. When the position of the leakage site 201 deviates, maintenance personnel can conveniently detach the gas release cover 110 and reinstall it at the new leakage site 201, ensuring effective blocking and collection of the leaked gas. In addition, if the leakage condition is aggravated or alleviated, different specifications of the gas release cover 110 can be replaced according to actual needs, such as replacing a larger size and stronger collection capacity gas release cover 110 when the amount of leaked gas increases, and replacing a smaller size and more economical gas release cover 110 after the leakage condition improves. This flexibility enables the anti-leakage device to always maintain the best adaptation to the production conditions, ensuring the stability and efficiency of the production process.

[0099] The detachable connection avoids the overall replacement that may be caused by the non-detachable connection. With the detachable connection, only the damaged specific components need to be replaced, which greatly reduces the maintenance cost.

[0100] Please refer to Figure 2 and Figure 3 In some embodiments, the extraction device 200 is provided with a third channel 220, which penetrates from the outside of the extraction device 200 to the inside of the extraction device 200, and the third channel 220 can directly guide the extraction agent gas inside the extraction device 200 out.

[0101] During the operation of the extraction device 200, the inside of the extraction device 200 is filled with a large amount of extraction agent gas. The third channel 220, which penetrates from the outside of the extraction device 200 to the inside of the extraction device 200, can directly contact and capture these gases at the first time, and quickly guide them out of the device. This not only effectively reduces the accumulation and diffusion of the gases inside the device, reduces the corrosion risk to the surrounding components, but also reduces the escape of the gases at the leakage site 201, greatly improves the efficiency and success rate of gas collection, and further reduces the pollution risk to the production environment.

[0102] It can be understood that the third channel 220 is also connected with the gas extraction device 130, and the gas extraction device 130 connected with the third channel 220 and the gas extraction device 130 connected with the first channel 121 can be the same or different, and the gas extraction device 130 connected with the third channel 220 and the gas extraction device 130 connected with the second channel 122 can be the same or different.

[0103] The third channel 220 cooperates with the gas buffer cover 110, when a small amount of gas in the extraction device 200 bypasses the third channel 220 and escapes to the area of the gas buffer cover 110, the gas buffer cover 110 can perform secondary locking and collection on it, realizing all-round control of the gas. In cooperation with the existing gas guide channel assembly 120, when the gas flow is large, the third channel 220 and the existing gas guide channel assembly 120 can reasonably share the gas conveying task according to their respective carrying capacity. During the peak period of device operation, a large amount of extraction agent gas is generated, the third channel 220 takes advantage of its direct penetration to preferentially guide the high-concentration gas in the extraction device 200 out, and the existing gas guide channel assembly 120 is responsible for collecting and conveying other relatively dispersed gases in the area. The two work together to ensure that the gas extraction device 130 can operate efficiently and stably, avoid the reduction of gas extraction efficiency caused by excessive gas flow or uneven distribution, and further improve the performance and reliability of the entire anti-leakage device.

[0104] The pipe diameter of the third channel 220 is not limited in the embodiments of the present application, and the third channel 220 is exemplarily a DN80 gas extraction pipeline.

[0105] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and equivalent components can be substituted therefor. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A leakage prevention device for the extraction section in the production of ultra-high molecular weight polyethylene fiber, characterized in that, The application relates to an anti-leakage device for an extraction section of an ultra-high molecular weight polyethylene fiber production line. The anti-leakage device comprises: a gas release cover connected to the leakage site of an extraction device through a mounting portion, wherein the mounting portion comprises a gas inlet and a sealing element arranged around the gas inlet; a gas guide channel assembly, at least part of which extends inside the gas release cover, and the gas guide channel assembly comprises at least one gas inlet inside the gas release cover; and a gas extraction device connected to the gas guide channel assembly. The extraction agent gas leaked from the leakage site of the extraction device is blocked by the gas release cover, and part of the extraction agent gas directly enters the gas guide channel assembly through the at least one gas inlet, and the other part of the extraction agent gas enters the gas guide channel assembly through the at least one gas inlet after the gas release cover moves to the at least one gas inlet, and the gas extraction device can guide the extraction agent gas in the gas guide channel assembly to a target site. The gas guide channel assembly comprises a first channel and a second channel, the first channel extends in a first direction inside the gas release cover, and the second channel extends in a second direction inside the gas release cover. The first direction intersects the second direction.

2. The leak prevention device for the extraction section of the production of the ultra-high molecular weight polyethylene fiber according to claim 1, characterized by, The first direction is the direction of gravity, the first channel comprises a first gas inlet, and the distance between the first gas inlet and the gas inlet is 0-25 cm. The first gas inlet is in a horn shape.

3. The leak prevention device for the extraction section of the production of the ultra-high molecular weight polyethylene fiber according to claim 2, characterized by, The gas release cover has oppositely arranged top and bottom walls in the direction of gravity, and the second channel extends along the bottom wall.

4. The leak prevention device for the extraction section of the production of the ultra-high molecular weight polyethylene fiber according to claim 3, characterized by, The second channel is provided with at least one through hole.

5. The leak prevention device for the extraction section of the production of the ultra-high molecular weight polyethylene fiber according to claim 2, characterized by, The gas release cover is further provided with a gas supplement inlet arranged on the side of the mounting portion away from the gas guide channel assembly.

6. The leak prevention device for the extraction section of the production of the ultra-high molecular weight polyethylene fiber according to claim 5, characterized by, The anti-leakage device for the extraction section of the ultra-high molecular weight polyethylene fiber production line comprises an extraction device and the anti-leakage device for the extraction section of the ultra-high molecular weight polyethylene fiber production line, and the gas release cover of the anti-leakage device for the extraction section of the ultra-high molecular weight polyethylene fiber production line is in communication with the leakage site of the extraction device and forms a sealed cavity structure.

7. The leak prevention device for the extraction section of the production of the ultra-high molecular weight polyethylene fiber according to claim 1, characterized by, The gas release cover is detachably connected to the leakage site.

8. An extraction apparatus for the production of ultra-high molecular weight polyethylene fibers, characterized by, The extraction device is provided with a third channel, the third channel penetrates from the outside of the extraction device to the inside of the extraction device, and the third channel can directly guide the extraction agent gas in the inside of the extraction device.

9. The extraction apparatus for producing an ultra-high molecular weight polyethylene fiber according to Claim 8, characterized by, ​ 10. The extraction apparatus for producing an ultra-high molecular weight polyethylene fiber according to Claim 8, wherein ​

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