Spark ignition source separating and trapping device of pipeline transportation system

Abstract

The invention relates to a spark ignition source separating and trapping device of a pipeline transportation system, and relates to the technical field of industrial explosion safety science. Comprising a main pipeline and an inner sleeve, the left end of the inner sleeve is inserted into the main pipeline in a penetrating mode, the left end of the main pipeline is provided with a combustible multiphase flow inlet wrapped with spark particles, and the right end of the inner sleeve is provided with a combustible multiphase flow outlet; a left flow guide assembly is arranged in the main pipeline, a right flow guide assembly is arranged in the inner sleeve, and a combustible multiphase flow circulation channel is formed between the left flow guide assembly and the right flow guide assembly; the main pipeline is communicated with a first spark particle collecting and guiding pipeline, the inner sleeve is communicated with a second spark particle collecting and guiding pipeline, and the first spark particle collecting and guiding pipeline and the second spark particle collecting and guiding pipeline are both communicated with the spark particle collecting cavity. According to the invention, the radial velocity and motion component velocity can be adjusted under the conditions of different multiphase flow transport velocities and fluid-solid mass ratios, the circumferential spiral motion radius of spark particles is increased, and the remarkable separation and trapping capability of metal spark particles and fluid is enhanced.

Description

Technical Field

[0001] The invention relates to the field of industrial explosion safety science and technology, in particular to a spark ignition source separation and capture device for a pipeline transportation system. Background Art

[0002] With the rapid advancement of modern technology, my country's industries critical to national economy and livelihoods, such as industry, trade, and metallurgy, are developing rapidly. However, these production processes also carry significant explosion risks. In particular, metal spark particles are a common, even inevitable, phenomenon during manufacturing and processing, acting as an ignition source. Some metal spark particles reach temperatures exceeding 1000°C, far exceeding the minimum ignition temperature of some typical combustible materials. Metal sparks have become a significant risk factor for explosion hazards in my country's modern industry and trade. Metal sparks induced by high-temperature particle beams and contact points alone account for over 32% of the statistically significant ignition causes of industrial explosions. Therefore, mechanical sparks generated by friction and impact are a significant cause of explosions of combustible materials in transportation systems. Effectively separating and capturing spark ignition sources within pipeline transportation systems is a pressing technical challenge to prevent explosions in these industries. Currently, there is a lack of devices, both domestically and internationally, for effectively separating and capturing spark ignition sources within pipeline transportation systems.

[0003] Spark particle capture devices are explosion prevention devices for the transport pipelines preceding bag or cartridge dust collectors. Existing spark particle separation and capture devices primarily utilize gravity settling and swirl separation. Gravity settling spark particle capture devices have inherent shortcomings, such as large size, low efficiency, and limited applicability, making them an outdated technology. Swirl separation spark particle capture devices, on the other hand, utilize radially arranged guide vanes within a barrel to force the multiphase flow within the pipeline to generate radial velocity. Due to the mass difference between the fluid and solids, the larger spark particles are inertially moved toward the inner wall of the pipe. However, existing swirl separation spark particle capture devices also have inherent drawbacks that are difficult to overcome. The effectiveness of the radially arranged guide vanes is significantly affected by the velocity of the multiphase flow within the pipeline and the mass of the metal spark particles, resulting in incomplete capture of the metal spark particles. There is still a risk that escaped metal sparks could cause an explosion in the pipeline transport system. Therefore, in order to overcome the shortcomings of the existing spark particle capture device, providing a pipeline transportation system spark ignition source efficient separation and capture device has become a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0004] In order to solve at least one technical problem in the background technology, the present invention provides a spark ignition source separation and capture device for a pipeline transportation system, which can adjust the radial velocity motion component under different multiphase flow transportation speeds and fluid-solid mass ratios, increase the circumferential spiral motion path and collision probability of the spark particles, and enhance the significant separation and capture ability of metal spark particles and fluid.

[0005] To achieve the above-mentioned objectives, the present invention provides a spark ignition source separation and capture device for a pipeline transportation system, comprising: a main pipeline and an inner sleeve, the left end of the inner sleeve being inserted into the main pipeline, the left end of the main pipeline being provided with a combustible multiphase flow inlet entrained with spark particles, and the right end of the inner sleeve being provided with a combustible multiphase flow outlet; a left guide component is rotatably provided in the main pipeline, and a right guide component is rotatably provided in the inner sleeve, and a combustible multiphase flow circulation channel is formed between the left guide component and the right guide component; the bottom end of the main pipeline is connected to a first spark particle collection guide pipeline, and the bottom end of the inner sleeve is connected to a second spark particle collection guide pipeline, and the other ends of the first spark particle collection guide pipeline and the second spark particle collection guide pipeline are both connected to the spark particle collection chamber.

[0006] Furthermore, a first spark capture semi-constrained transfer chamber is formed between the main pipe and the left end of the inner sleeve, and the first spark capture semi-constrained transfer chamber is connected to the first spark particle collection guide pipeline; a second spark capture semi-constrained transfer chamber is provided at the right end inside the inner sleeve, and the second spark capture semi-constrained transfer chamber is connected to the second spark particle collection guide pipeline.

[0007] Furthermore, it also includes a driving component, which passes through the main pipeline and the inner sleeve in sequence, and is respectively connected to the left guide component and the right guide component in a transmission manner.

[0008] Furthermore, the left guide assembly includes a first driven rod, a left guide cone and a left guide wheel blade, the first driven rod passes through the left guide cone, and a left guide wheel blade is provided on the circumference of the left guide cone.

[0009] Furthermore, the right guide assembly includes a second follower rod, a right guide cone and a right guide wheel blade, the second follower rod passes through the right guide cone, and a right guide wheel blade is provided on the peripheral side of the right guide cone, and the radial torsion direction of the right guide wheel blade is opposite to that of the left guide wheel blade.

[0010] Furthermore, a plurality of pulleys are rotatably sleeved on the first driven rod and the second driven rod, and a fixing rod is installed on the pulleys.

[0011] Furthermore, the drive assembly includes a variable frequency drive motor, an active rod, a driving bevel gear, a first driven bevel gear, a second driven bevel gear and a bevel gear group dust cover, one end of the active rod extending into the inner sleeve is connected to the driving bevel gear, and the other end is connected to the output end of the variable frequency drive motor, the first driven bevel gear is installed at the right end of the first driven rod, and the second driven bevel gear is installed at the left end of the second driven rod, and the bevel gear group dust cover is sleeved on the outside of the driving bevel gear, the first driven bevel gear and the second driven bevel gear.

[0012] Furthermore, the first spark particle collecting guide pipeline and the second spark particle collecting guide pipeline are both arranged to be tilted to the left, and the tilt angle range is 30° to 60°.

[0013] Furthermore, flanges are installed at the inlet of the combustible multiphase flow carrying spark particles and the outlet of the combustible multiphase flow.

[0014] The beneficial effects of the present invention are:

[0015] The present invention can adjust the radial velocity component under different multiphase flow transport speeds and fluid-solid mass ratios, increase the circumferential spiral motion path and collision probability of the spark particles, and enhance the significant separation and capture ability of the metal spark particles and the fluid; in the case of limited failure of the first-level separation of the metal spark particles and the fluid, adopt the second-level disaster reduction and protection measures to ensure the separation and capture of a small number of first-level escaped metal spark particles and the fluid; through the reverse movement of the two guide wheel blades, the multi-stage metal spark particle separation and capture ability is synergistically enhanced; for different application scenarios, it must have strong scalability and scenario application promotion resilience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a cross-sectional view of the present invention;

[0018] Figure 3 Schematic diagram of the migration path of the combustible multiphase flow in the cavity of the present invention;

[0019] Figure 4 Schematic diagram of the transmission connection between the drive assembly of the present invention and the left guide assembly and the right guide assembly Figure 1 ;

[0020] Figure 5 Schematic diagram of the transmission connection between the drive assembly of the present invention and the left guide assembly and the right guide assembly Figure 2 .

[0021] Among them, in the figure: 1-main pipeline; 2-inner sleeve; 3-spark particle combustible multiphase flow inlet; 4-combustible multiphase flow outlet; 5-left guide assembly; 6-right guide assembly; 7-combustible multiphase flow circulation channel; 8-first spark particle collection guide pipeline; 9-second spark particle collection guide pipeline; 10-spark particle collection chamber; 11-first spark capture semi-constrained transfer bin; 12-second spark capture semi-constrained transfer bin; 13-drive assembly; 14-first driven rod; 15-left guide cone; 16-left guide wheel; 17-second driven rod; 18-right guide cone; 19-right guide wheel; 20-pulley; 21-fixed rod; 22-variable frequency drive motor; 23-active rod; 24-active bevel gear; 25-first driven bevel gear; 26-second driven bevel gear; 27-bevel gear set dust cover; 28-flange. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0025] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0026] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0027] To achieve the above purpose, if Figure 1-5 As shown, the present invention provides a spark ignition source separation and capture device for a pipeline transportation system, comprising: a main pipeline 1 and an inner sleeve 2. The left end of the inner sleeve 2 is inserted into the main pipeline 1. The left end of the main pipeline 1 is provided with a combustible multiphase flow inlet 3 entraining spark particles, and the right end of the inner sleeve 2 is provided with a combustible multiphase flow outlet 4. A left guide assembly 5 is rotatably disposed within the main pipeline 1, and a right guide assembly 6 is rotatably disposed within the inner sleeve 2. A combustible multiphase flow flow channel 7 is formed between the left and right guide assemblies 5 and 6. The bottom end of the main pipeline 1 is connected to a first spark particle collection guide pipe 8, and the bottom end of the inner sleeve 2 is connected to a second spark particle collection guide pipe 9. The other ends of the first and second spark particle collection guide pipes 8 and 9 are both connected to a spark particle collection chamber 10. The multiphase combustible material can be a gas-powder mixture. After the spark particles are separated and captured by the device, most of the spark particles enter the spark particle collecting chamber 10 through the first spark particle collecting guide pipeline 8, a small amount of escaped spark particles enter the spark particle collecting chamber 10 through the second spark particle collecting guide pipeline 9, and the combustible multiphase flow without spark particles flows out through the combustible multiphase flow outlet 4 on the right.

[0028] To further optimize the technical solution, a first spark capture semi-constrained transfer chamber 11 is formed between the main pipe 1 and the left end of the inner sleeve 2, and the first spark capture semi-constrained transfer chamber 11 is connected to the first spark particle collection guide pipeline 8; a second spark capture semi-constrained transfer chamber 12 is provided at the right end inside the inner sleeve 2, and the second spark capture semi-constrained transfer chamber 12 is connected to the second spark particle collection guide pipeline 9.

[0029] The present invention further includes a driving assembly 13 , which sequentially passes through the main pipe 1 and the inner casing 2 and is respectively connected to the left flow guide assembly 5 and the right flow guide assembly 6 in a transmission manner.

[0030] The left deflector assembly 5 includes a first driven rod 14, a left deflector cone 15, and a left deflector blade 16. The first driven rod 14 passes through the left deflector cone 15, and the left deflector blade 16 is arranged around the circumference of the left deflector cone 15. The left end of the first driven rod 14 has a rounded head. The right deflector assembly 6 includes a second driven rod 17, a right deflector cone 18, and a right deflector blade 19. The second driven rod 17 passes through the right deflector cone 18, and the right deflector blade 19 is arranged around the circumference of the right deflector cone 18. The right deflector blade 19 has a radial torsion direction opposite to that of the left deflector blade 16. The left guide wheel blade and the right guide wheel blade rotate in opposite directions under the action of the drive assembly, and the radial twisting directions of the left guide wheel blade and the right guide wheel blade are also opposite. The purpose is to synergistically enhance the separation ability of spark particles. At the same time, it also increases the probability of collision of the internal solid wall of the device, including the guide wheel blades, with metal sparks, thereby enhancing the initial extinguishing ability of metal sparks. The provision of similar components such as round heads facing the incoming flow direction is to ensure that dust and spark particles in the multiphase flow are not restricted and retained inside the device. The cylindrical setting of the guide cone connecting the guide wheel blades, which is smaller in front and larger in the back, is mainly to force mechanical lifting of the incoming flow, providing partial radial movement force for the spark particles. Of course, the radial movement force also includes the force provided by the rotation of the guide wheel blades on the incoming flow. This force is dominant and adjustable.

[0031] In addition, the present invention provides a thin copper friction-free spark-free thin wheel blade on the left guide wheel blade 16 and the right guide wheel blade 19, which are embedded in the top of the left guide wheel blade 16 and the right guide wheel blade 19, and are integrated with the left guide wheel blade 16 and the right guide wheel blade 19 to prevent the wheel blade from rubbing against the main pipeline and the inner wall of the inner sleeve under abnormal conditions to form metal sparks, thereby avoiding the risk of the device of the present invention itself igniting combustible dust in the transportation system.

[0032] To further optimize the technical solution, multiple pulleys 20 are rotatably mounted on the first driven rod 14 and the second driven rod 17, and fixed rods 21 are mounted on the pulleys 20. The first driven rod 14 and the second driven rod 17 are used to sleeve the pulleys 20 mounted on the driven rods to ensure stable rotation of the guide cone and the guide wheel blades.

[0033] The drive assembly 13 includes a variable frequency drive motor 22, an active rod 23, an active bevel gear 24, a first driven bevel gear 25, a second driven bevel gear 26, and a bevel gear assembly dust cover 27. One end of the active rod 23 extending into the inner sleeve 2 is connected to the active bevel gear 24, and the other end is connected to the output end of the variable frequency drive motor 22. The first driven bevel gear 25 is mounted on the right end of the first driven rod 14, and the second driven bevel gear 26 is mounted on the left end of the second driven rod 17. The bevel gear assembly dust cover 2 is mounted on the outside of the active bevel gear 24, the first driven bevel gear 25, and the second driven bevel gear 26. The rotational power is driven by the variable frequency drive motor, and the driving speed of the variable frequency drive motor can be individually set according to the multiphase flow migration velocity and the quality of the spark particles in the actual process, thereby enhancing the separation and capture effect of the device on metal spark particles.

[0034] To further optimize the technical solution, both the first spark particle collection guide conduit 8 and the second spark particle collection guide conduit 9 are tilted to the left at an angle ranging from 30° to 60°. This ensures that a slight negative pressure is formed between the two spark particle collection guide conduits and the main cavity opening attachment, preventing the dust cloud in the combustible multiphase flow from descending along this path. The multiphase flow can flow out of the combustible multiphase flow outlet. The volume and mass of the dust cloud in the combustible two-phase flow are much smaller than the volume and mass of the metal spark particles. Therefore, the greater the inertia of the metal spark particles, the larger the radius of radial motion under the same radial force, achieving separation of the multiphase flow and the metal spark particles.

[0035] To further optimize the technical solution, flanges 28 are installed at the inlet and outlet of the combustible multiphase flow carrying the spark particles, so as to facilitate the positioning and installation of the entire separation and capture device.

[0036] The present invention can adjust the radial velocity component under different multiphase flow transport speeds and fluid-solid mass ratios, increase the circumferential spiral motion path and collision probability of the spark particles, and enhance the significant separation and capture ability of the metal spark particles and the fluid; in the case of limited failure of the first-level separation of the metal spark particles and the fluid, adopt the second-level disaster reduction and protection measures to ensure the separation and capture of a small number of first-level escaped metal spark particles and the fluid; through the reverse movement of the two guide wheel blades, the multi-stage metal spark particle separation and capture ability is synergistically enhanced; for different application scenarios, it must have strong scalability and scenario application promotion resilience.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A spark ignition source separation and capture device for a pipeline transportation system, characterized in that: include: A main pipe and an inner sleeve, the left end of the inner sleeve is inserted into the main pipe, the left end of the main pipe is provided with a combustible multiphase flow inlet entrained with spark particles, and the right end of the inner sleeve is provided with a combustible multiphase flow outlet; a left guide component is rotatably provided in the main pipe, and a right guide component is rotatably provided in the inner sleeve, and a combustible multiphase flow circulation channel is formed between the left guide component and the right guide component; the bottom end of the main pipe is connected to a first spark particle collection guide pipeline, and the bottom end of the inner sleeve is connected to a second spark particle collection guide pipeline, and the other ends of the first spark particle collection guide pipeline and the second spark particle collection guide pipeline are both connected to the spark particle collection chamber.

2. The spark ignition source separation and capture device for a pipeline transportation system according to claim 1, characterized in that: A first spark capture semi-constrained transfer chamber is formed between the main pipe and the left end of the inner sleeve, and the first spark capture semi-constrained transfer chamber is connected to the first spark particle collection guide pipeline; a second spark capture semi-constrained transfer chamber is provided at the right end inside the inner sleeve, and the second spark capture semi-constrained transfer chamber is connected to the second spark particle collection guide pipeline.

3. A spark ignition source separation and capture device for a pipeline transportation system according to claim 1 or 2, characterized in that: It also includes a driving component, which passes through the main pipeline and the inner sleeve in sequence and is respectively connected to the left guide component and the right guide component in a transmission manner.

4. The spark ignition source separation and capture device for a pipeline transportation system according to claim 3, characterized in that: The left guide assembly includes a first driven rod, a left guide cone and a left guide wheel. The first driven rod passes through the left guide cone, and a left guide wheel is provided on the circumference of the left guide cone.

5. The spark ignition source separation and capture device for a pipeline transportation system according to claim 4, characterized in that: The right guide assembly includes a second driven rod, a right guide cone and a right guide wheel blade. The second driven rod passes through the right guide cone. The right guide wheel blade is provided on the peripheral side of the right guide cone. The radial torsion direction of the right guide wheel blade is opposite to that of the left guide wheel blade.

6. The spark ignition source separation and capture device for a pipeline transportation system according to claim 5, characterized in that: A plurality of pulleys are rotatably sleeved on the first driven rod and the second driven rod, and a fixing rod is installed on the pulleys.

7. The spark ignition source separation and capture device for a pipeline transportation system according to claim 6, characterized in that: The drive assembly includes a variable frequency drive motor, an active rod, a driving bevel gear, a first driven bevel gear, a second driven bevel gear and a bevel gear set dust cover. One end of the active rod extending into the inner sleeve is connected to the driving bevel gear, and the other end is connected to the output end of the variable frequency drive motor. The first driven bevel gear is installed at the right end of the first driven rod, and the second driven bevel gear is installed at the left end of the second driven rod. The bevel gear set dust cover is sleeved on the outside of the driving bevel gear, the first driven bevel gear and the second driven bevel gear.

8. A spark ignition source separation and capture device for a pipeline transportation system according to claim 1 or 7, characterized in that: The first spark particle collecting guide pipeline and the second spark particle collecting guide pipeline are both arranged to be tilted to the left, and the tilt angle range is 30° to 60°.

9. The spark ignition source separation and capture device for a pipeline transportation system according to claim 1, characterized in that: Flanges are installed at the inlet of the combustible multiphase flow carrying spark particles and the outlet of the combustible multiphase flow.

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