A method for sampling a carbon fiber precursor dope

Abstract

The application provides a carbon fiber precursor solution sampling method, which comprises the following steps: S1. providing a sealed container with a sampler inside, wherein the sealed container is a closable sealed container; and S2. placing the sealed container on a displacement assembly at position one. The carbon fiber precursor solution sampling method adopts automatic sampling, greatly reduces the labor intensity, and is safe and reliable. The medium in the reaction kettle is sealed through the closed sealed cavity and the closable channel between the sealed cavity and the reaction kettle, the sealing property of the high-temperature corrosive medium is ensured, air is prevented from entering the reaction kettle and contacting the high-temperature corrosive medium to generate toxic and harmful substances, the air in the sealed cavity is replaced by inert gas, the sealing property of the high-temperature corrosive medium is ensured, and the sealed container can be disassembled to take out the sampler through the setting of the opening and closing assembly and the tightening of the sealed container, so that the leakage of the toxic medium is avoided.

Description

Technical Field

[0001] This invention relates to the field of media sampling technology, and in particular to a method for sampling raw materials from carbon fiber precursor. Background Technology

[0002] In the chemical industry, there are certain technical challenges in sampling the raw material of carbon fiber precursor. The raw material of carbon fiber precursor contains acrylonitrile, which is a petroleum byproduct. It is usually derived from petroleum-based chemicals and is produced by a series of chemical reactions of hydrocarbon compounds in petroleum. It is highly toxic.

[0003] When sampling the above-mentioned high-temperature, toxic and corrosive carbon fiber precursor solution, the traditional method is manual sampling. However, manual sampling is cumbersome and it is difficult to ensure that the sampling is carried out under sealed conditions, which poses a significant safety hazard.

[0004] Therefore, in order to solve the above problems, the present invention proposes a method for sampling carbon fiber precursor solution that ensures automatic completion of sampling under sealed conditions and guarantees the safety of sampling operations. Summary of the Invention

[0005] To address the technical problems existing in sampling high-temperature, toxic, and corrosive media, this invention provides a method for sampling raw materials from carbon fiber precursors.

[0006] According to one objective of the present invention, the present invention provides a method for sampling carbon fiber precursor solution, comprising the following steps:

[0007] S1. Provide a sealed container containing a sampler, wherein the sealed container is an openable and closable sealed container;

[0008] S2. Place the sealed container in position one of the displacement components;

[0009] S3. The sealing container is transferred to the opening and closing component by the displacement component, and the opening and closing component positions and opens the sealing container;

[0010] S4. The sampler is transferred into the sealed cavity by the displacement assembly, and the sampler is connected to the winding assembly located in the sealed cavity. The displacement assembly and the sampler are separated and transferred to the outside of the sealed cavity, wherein a channel is provided between the sealed cavity and the reactor to be sampled, and the channel is sealed.

[0011] S5. Replace the air in the sealed cavity with an inert gas. After the replacement is qualified, open the channel between the sealed cavity and the reactor to be sampled. The winding assembly transfers the sampler into the reactor through the channel. The sampler samples the medium in the reactor.

[0012] S6. After the sampler has finished sampling, the sampler is transferred into the sealed cavity by the winding assembly, and the sampler and the winding assembly are separated and transferred out of the sealed cavity by the displacement assembly;

[0013] S7. The sampler is placed into the sealed container on the opening and closing assembly by the displacement assembly, and the sampler is sealed in the sealed container by the opening and closing assembly;

[0014] S8. The displacement assembly transfers the sealed container to position one.

[0015] Preferably, the sealing cavity is formed by an inner cavity sealing cover. The displacement component, the opening and closing component, the winding component, and the sealing cavity are all located above the equipment operating platform, and the reactor is located below the equipment operating platform. An airtight cover is provided on the outer side of the displacement component, the opening and closing component, the sealing cavity, and the winding component. A manhole cover is provided on the airtight cover, and the manhole cover corresponds to position one of the displacement component. Between steps S1 and S2, the manhole cover on the airtight cover is opened, and the sealing container is placed on the displacement component through the manhole cover. Between steps S2 and S3, the manhole cover on the airtight cover is closed.

[0016] Preferably, the sealed container includes a container body and a sealing cap. The container body is provided with an inlet and outlet for the sampler to enter and exit. The sealing cap opens and closes the inlet and outlet and is connected to the sampler. The displacement component corresponds to the sealing cap.

[0017] The displacement assembly includes a pneumatic gripper, a vertically arranged slide rail, and a horizontally arranged cylinder telescopic assembly. The cylinder telescopic assembly is movably mounted on the slide rail, and the cylinder telescopic assembly drives the pneumatic gripper. The pneumatic gripper is configured to grip the sealing cover.

[0018] Step S3 includes:

[0019] S31. Move the cylinder telescopic assembly on the slide rail;

[0020] S32. Move the pneumatic gripper to position four via the cylinder telescopic assembly, and activate the opening and closing assembly.

[0021] Preferably, the container body is a cylindrical container body, the inlet and outlet are located at one end of the container body along its length, and matching threads are provided on the inner side of the inlet and outlet and the outer side of the sealing cap;

[0022] The opening and closing assembly includes a rotatable first wheel, the center of which has a hole for receiving the container body, and a clamping cylinder is mounted on the first wheel in a radial direction.

[0023] Step S3 further includes:

[0024] S33. The sealing container is tightened by the tightening cylinder;

[0025] S34. The first wheel body, in conjunction with the tightening cylinder, drives the container body to rotate, causing the threads between the container body and the sealing cap to disengage.

[0026] Preferably, the opening and closing component further includes:

[0027] A rotatable second wheel is connected via a servo motor and is connected to the first wheel via a belt drive. The radial dimension of the second wheel is smaller than that of the first wheel.

[0028] The outer wall of the container body is provided with a clamping groove corresponding to the clamping cylinder;

[0029] In step S33, the movable end of the clamping cylinder is inserted into the clamping groove;

[0030] In step S34, the second wheel is driven to rotate by a servo motor, and the second wheel drives the first wheel to rotate via the belt.

[0031] Preferably, the inner cavity sealing cover is connected to an airtight door for opening and closing;

[0032] The winding assembly includes a winch reel disposed above the inner cavity sealing cover, a rope being wound around the outer side of the winch reel, a male end being provided at the end of the rope, a female end being provided on the sealing cover that matches the male end, and the pneumatic gripper being configured to control the separation and combination of the female end and the male end.

[0033] Step S4 includes:

[0034] S41. Raise the pneumatic gripper, and the pneumatic gripper, through the sealing cover, causes the sampler to detach from the container body;

[0035] S42. The pneumatic gripper rises to position two, and the airtight door opens;

[0036] S43. The cylinder telescopic assembly drives the pneumatic gripper to move, and the pneumatic gripper, holding the sampler, advances through the airtight door into the sealed cavity;

[0037] S44. After the sampler enters the sealed cavity and is in position, the pneumatic gripper rises to position three, and the female head on the sealing cover is connected to the male head at the end of the rope of the winding assembly;

[0038] S45. The pneumatic gripper releases the sealing cover and withdraws from the sealing cavity;

[0039] S46. The cylinder on the airtight door is activated, and the airtight door is closed.

[0040] Preferably, the sealed cavity is connected to the high-pressure argon cylinder, and the channel between the sealed cavity and the reactor to be sampled is connected by an electrically controlled ball valve. In step S4, the electrically controlled ball valve closes the channel between the sealed cavity and the reactor to be sampled.

[0041] Step S5 includes:

[0042] S51. A high-pressure argon cylinder is filled with argon gas through a gas tube into the sealed cavity to replace the air in the sealed cavity;

[0043] S52. After monitoring confirms that the air in the sealed cavity has been adequately replaced by argon, the electrically controlled ball valve is opened.

[0044] S53. The sampler is lowered into the reactor via a channel using a winding assembly;

[0045] S54. The sampler descends to its position, and the medium in the reaction vessel enters the sampler.

[0046] Preferably, step S6 includes:

[0047] S61. Reset the winding assembly, and transfer the sampler into the sealed cavity through the winding assembly. When the sampler is in position three, the winding assembly stops working.

[0048] S62. Open the airtight door;

[0049] S63. When the cylinder telescopic assembly is activated, the pneumatic gripper opens and enters the sealed cavity through the airtight door;

[0050] S64. After the pneumatic gripper enters the sealing cavity and reaches its position, the pneumatic gripper rises to position three and closes to clamp the sealing cover.

[0051] S65. The pneumatic gripper rises to position two, and the female end on the sealing cover and the male end at the end of the rope of the winding assembly disengage;

[0052] S66. The pneumatic gripper retracts the sampler through the airtight door;

[0053] S67. Close the airtight door.

[0054] Preferably, step S7 includes:

[0055] S71. The pneumatic gripper of the displacement assembly moves to position five;

[0056] S72. The opening and closing assembly drives the first wheel to rotate in the opposite direction, and the first wheel drives the container body to rotate through the clamping cylinder, and the container body and the sealing cover are locked together by threads;

[0057] S73. The clamping cylinder in the opening and closing assembly retracts.

[0058] Preferably, step S8 includes:

[0059] S81. The pneumatic gripper, carrying a sealed container containing a sampler, rises to position one and waits;

[0060] S82. Open the manhole cover, manually remove the sealed container containing the sampler, install another sealed container containing the sampler, and begin the next sampling cycle.

[0061] Compared with the prior art, the beneficial effects of the present invention are:

[0062] This method for sampling carbon fiber precursor solution employs automated sampling, significantly reducing labor intensity and ensuring safety and reliability. It utilizes a sealed chamber and an openable / closable channel between the chamber and the reactor to seal the medium within the reactor, guaranteeing the airtightness of the high-temperature corrosive medium and preventing air from entering the reactor and coming into contact with the medium to generate toxic or harmful substances. Furthermore, inert gas is used to replace the air within the sealed chamber, further ensuring the airtightness of the high-temperature corrosive medium. Simultaneously, by setting up opening and closing components to fix and tighten the sealed container, it is possible to disassemble the sealed container to remove the sampler, preventing leakage of toxic media.

[0063] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of one perspective of the overall device for sampling carbon fiber precursor solution according to the present invention;

[0065] Figure 2 This is a schematic diagram of the overall device for sampling carbon fiber precursor solution according to the present invention from another perspective;

[0066] Figure 3 This is a schematic diagram of the airtight enclosure inside an apparatus for sampling carbon fiber precursor solution according to the present invention.

[0067] Figure 4 This is a schematic diagram of the opening and closing components in a device for sampling carbon fiber precursor solution according to the present invention;

[0068] Figure 5 This is a schematic diagram showing the connection between the winding assembly and the inner cavity sealing cover in a device for sampling carbon fiber precursor solution according to the present invention.

[0069] Figure 6 This is a schematic diagram of the winding assembly in a device for sampling carbon fiber precursor solution according to the present invention;

[0070] Figure 7 This is a schematic diagram showing the connection between the sampler and the sealed container in a device for sampling carbon fiber precursor solution according to the present invention;

[0071] Figure 8 This is a schematic diagram of the male connector and rope connection in a device for sampling carbon fiber precursor solution according to the present invention;

[0072] Figures 9 to 32 This is a schematic diagram illustrating the steps of a method for sampling raw materials from carbon fiber precursor fibers according to the present invention. Detailed Implementation

[0073] The following description is intended to provide a detailed account of the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0074] This invention provides a technical solution: a method for sampling carbon fiber precursor solution, comprising the following steps:

[0075] S1. Provide a sealed container 800 containing a sampler 900, wherein the sealed container 800 is an openable and closable sealed container 800;

[0076] S2. See also Figure 11 The sealed container 800 is placed in the displacement assembly 200 at position one;

[0077] S3. See also Figure 13 and 14 The sealing container 800 is transferred to the opening and closing component 300 by the displacement component 200, and the opening and closing component 300 positions and opens the sealing container 800.

[0078] S4. See also Figure 15-19The sampler 900 is transferred into the sealed cavity 501 by the displacement component 200, and the sampler 900 is connected to the winding component 400 located in the sealed cavity 501. The displacement component 200 and the sampler 900 are separated and transferred to the outside of the sealed cavity 501. A channel is provided between the sealed cavity 501 and the reactor 700 to be sampled, and the channel is sealed.

[0079] S5. See also Figure 20-23 The air in the sealed cavity 501 is replaced with an inert gas. After the replacement is qualified, the channel between the sealed cavity 501 and the reactor 700 to be sampled is opened. The winding assembly 400 transfers the sampler 900 into the reactor 700 through the channel. The sampler 900 samples the medium in the reactor 700.

[0080] S6. See also Figure 25-28 Once the sampler 900 has completed sampling, the sampler 900 is transferred to the sealed cavity 501 by the winding assembly 400, and the sampler 900 and the winding assembly 400 are separated and transferred to the outside of the sealed cavity 501 by the displacement assembly 200.

[0081] S7. See also Figure 29 and Figure 30 The sampler 900 is placed into the sealed container 800 on the opening and closing assembly 300 by the displacement assembly 200, and the sampler 900 is sealed in the sealed container 800 by the opening and closing assembly 300.

[0082] S8. See also Figure 31 and Figure 32 The displacement component 200 transfers the sealed container 800 to position one.

[0083] See Figure 5 The sealing cavity 501 is formed by an inner cavity sealing cover 500, and a fixing plate is installed on the outside of the inner cavity sealing cover 500. The fixing plate supports and connects the displacement assembly 200.

[0084] See Figure 1 and 2 The displacement assembly 200, the opening and closing assembly 300, the winding assembly 400, and the sealing cavity 501 are all located above the equipment operating platform 100, and the reaction vessel 700 is located below the equipment operating platform 100. An airtight cover 600 is provided over the outer sides of the displacement assembly 200, the opening and closing assembly 300, the sealing cavity 501, and the winding assembly 400. A manhole cover 601 is provided on the airtight cover 600, and the manhole cover 601 corresponds to position one of the displacement assembly 200. Between steps S1 and S2, see [reference needed]. Figure 10 Open the manhole cover 601 on the airtight cover 600, and place the sealed container 800 onto the displacement assembly 200 through the manhole cover 601. Between steps S2 and S3, see [link to relevant documentation]. Figure 12 Close the manhole cover 601 on the airtight cover 600.

[0085] Furthermore, a camera is installed inside the airtight cover 600. The camera is used to monitor the working status of each component inside the airtight cover 600. After the manhole cover 601 on the airtight cover 600 is closed, the camera is opened.

[0086] See Figure 7 The sealed container 800 includes a container body 801 and a sealing cap 802. The container body 801 is provided with an inlet and outlet for the sampler 900 to enter and exit. The sealing cap 802 opens and closes the inlet and outlet and is connected to the sampler 900 by a rope. The displacement component 200 corresponds to the sealing cap 802.

[0087] See Figure 3 The displacement component 200 includes a pneumatic gripper 203, a vertically arranged slide rail 201, and a horizontally arranged cylinder telescopic component 202. The cylinder telescopic component 202 is movably mounted on the slide rail 201. The cylinder telescopic component 202 moves on the slide rail 201 in conjunction with a servo motor and a lead screw. The cylinder telescopic component 202 includes a telescopic cylinder, which drives the pneumatic gripper 203. The pneumatic gripper 203 is driven by the pneumatic gripper 203 cylinder and is configured to grip the sealing cover 802. A proximity switch is provided below the slide rail 201 to detect when the cylinder telescopic component 202 has descended to the correct position.

[0088] The displacement component 200 is divided into 5 working positions according to the position of the pneumatic gripper 203, namely position one, position two, position three, position four and position five.

[0089] Step S3 includes:

[0090] S31. The servo motor drives the cylinder telescopic assembly 202 to move on the slide rail 201 via the lead screw;

[0091] S32. The cylinder telescopic assembly 202 descends to position four, see [reference]. Figure 13 After the proximity switch senses that the cylinder extension assembly 202 has descended to the correct position, it activates the opening and closing assembly 300.

[0092] See Figure 7The container body 801 is a cylindrical container body 801, the inlet and outlet are located at one end of the container body 801 in the length direction, and the inner side of the inlet and outlet and the outer side of the sealing cap 802 are provided with matching threads.

[0093] See Figure 4 The opening and closing assembly 300 includes a rotatable first wheel 301, the center of which has a hole for accommodating the container body 801. A plurality of clamping cylinders 302 are mounted on the first wheel 301 and arranged radially along the first wheel 301. The clamping cylinders 302 are arranged circumferentially around the first wheel 301, and the movable end of the clamping cylinder 302 faces the center of the hole. An air pipe connector is provided at the end of the clamping cylinder 302 facing the radially outer side of the pulley.

[0094] A rotatable second wheel 303 is connected via a servo motor and is connected to the first wheel 301 via a belt drive. The radial dimension of the second wheel 303 is smaller than that of the first wheel 301.

[0095] An adjustable support is provided, with the first wheel body 301 and the second wheel body 303 disposed above the adjustable support, and the servo motor disposed below the adjustable support. A guide sleeve is disposed below the first wheel body 301, with the opening of the guide sleeve facing the insertion hole on the first wheel body 301.

[0096] See also Figure 7 Furthermore, the outer wall of the container body 801 is provided with a clamping groove 8011 corresponding to the clamping cylinder 302.

[0097] In step S32, the sealing container 800 enters the guide sleeve through the insertion hole on the first wheel body 301.

[0098] Step S3 further includes:

[0099] S33. The movable end of the clamping cylinder 302 clamps against the sealing container 800, wherein the movable end of the clamping cylinder 302 is inserted into the clamping groove 8011;

[0100] S34. The servo motor drives the second wheel 303 to rotate, and the second wheel 303 drives the first wheel 301 to rotate via the belt. The first wheel 301 drives the container body 801 to rotate via the clamping cylinder 302, and the threads between the container body 801 and the sealing cap 802 are disengaged. In one embodiment, the servo motor drives the second wheel 303 to rotate counterclockwise, and the second wheel 303 drives the first wheel 301 to rotate counterclockwise via the belt at a certain reduction ratio, so that the threads between the container body 801 and the sealing cap 802 are disengaged.

[0101] See Figure 3 An airtight door 502 is connected to the inner cavity sealing cover 500 for opening and closing, and the airtight door 502 is driven by a cylinder.

[0102] See Figure 5 and 6 The winding assembly 400 includes a winch reel 401 disposed above the inner cavity sealing cover 500, and a steel wire rope 402 is wound around the outer side of the winch reel 401. (See also...) Figure 7 and 8 The wire rope 402 is provided with a male end 4021 at its end, and the sealing cover 802 is provided with a female end 8021 that matches the male end 4021. The pneumatic gripper 203 is configured to control the separation and combination of the female end 8021 and the male end 4021.

[0103] In one embodiment, the specific structure of the male head 4021 and the female head 8021 is the same as that of a sampling device for carbon fiber precursor solution disclosed in application No. 202411800265X. The male head 4021 is equivalent to a clamping member, and the female head 8021 is equivalent to a combination structure of an inner sleeve, an extrusion member, a constraint member, and an outer sleeve. In use, the gripper corresponds to the outer sleeve, and the gripper controls the raising and lowering of the outer sleeve to realize the separation and combination between the female head 8021 and the male head 4021.

[0104] See also Figure 6 Furthermore, the winding assembly 400 includes:

[0105] A servo motor is installed above the sealing cover. The output end of the servo motor is connected to a winch drive wheel. The winch drive wheel is connected to the winch disc 401 via a belt. The radial dimension of the winch drive wheel is smaller than that of the winch disc 401. A slotted grinding gear is also provided on the output end of the servo motor. The slot of the grinding gear matches the wire rope 402. During use, the grinding gear guides the wire rope 402.

[0106] Furthermore, the winding assembly 400 also includes a winding camera, which is positioned above the inner cavity sealing cover 500 and faces the winch 401.

[0107] Step S4 includes:

[0108] S41. Referring to 15, the servo motor drives the cylinder telescopic assembly 202 and the pneumatic gripper 203 to rise via a lead screw, and the pneumatic gripper 203 drives the sampler 900 to detach from the container body 801 via the sealing cover 802;

[0109] S42. See also Figure 16 When the pneumatic gripper 203 rises to position two, the cylinder on the airtight door 502 actuates, and the airtight door 502 opens;

[0110] S43. See also Figure 17 The cylinder telescopic assembly 202 drives the pneumatic gripper 203 to move, and the pneumatic gripper 203 clamps the sampler 900 and moves forward through the airtight door 502 into the sealed cavity 501;

[0111] S44. See also Figure 18 After the sampler 900 enters the sealed cavity 501 and is in place, the air gripper 203 rises to position three, and the female head 8021 on the sealing cover 802 is connected to the male head 4021 at the end of the wire rope 402 of the winding assembly 400.

[0112] S45. See also Figure 19 The pneumatic gripper 203 releases the sealing cover 802 and withdraws from the sealing cavity 501;

[0113] S46. See also Figure 20 When the cylinder on the airtight door 502 is activated, the airtight door 502 closes.

[0114] See Figure 1 One end of a gas pipe is connected to the sealed cavity 501, and the other end of the gas pipe is connected to a high-pressure argon cylinder 503. The channel between the sealed cavity 501 and the sample-to-reactor 700 is connected by an electrically controlled ball valve 701. In step S4, the electrically controlled ball valve 701 closes the channel between the sealed cavity 501 and the sample-to-reactor 700. The electrically controlled ball valve 701 and the channel are connected by a flange.

[0115] Step S5 includes:

[0116] S51. See also Figure 20Argon gas is introduced into the sealed cavity 501 through the gas pipe from the high-pressure argon cylinder 503, replacing the air in the sealed cavity 501. Argon gas is denser than air, and the air is squeezed out through the hole at the top of the airtight cavity to prevent air from entering the reactor 700 and coming into contact with the high-temperature corrosive medium to produce toxic and harmful substances.

[0117] S52. See also Figure 21 After monitoring, once the air in the sealed cavity 501 has been replaced with argon gas to a satisfactory level, the electrically controlled ball valve 701 is opened.

[0118] S53. See also Figure 22 The servo motor in the winding assembly 400 is started, and the servo motor drives the winch drive wheel to rotate. The winch drive wheel drives the winch reel 401 to rotate through the belt at a certain reduction ratio. The wire rope 402 on the winch reel 401 drives the sampler 900 to descend into the reactor 700 through the channel.

[0119] S54. See also Figure 23 The steel wire rope 402 descends into position, and the high-temperature corrosive medium in the reactor 700 enters the sampler 900 through the inlet of the sampler 900.

[0120] The winding assembly 400 also includes a limit switch, which corresponds to the sampler 900 located at position three, and the limit switch is electrically connected to the servo motor in the winding assembly 400.

[0121] Step S6 includes:

[0122] S61. See also Figure 24 The winding assembly 400 is reset, and the sampler 900 is transferred to the sealed cavity 501 through the winding assembly 400. When the sampler 900 is in position three, the limit switch is activated, and the winding assembly 400 stops working.

[0123] S62. See also Figure 25 Open the airtight door 502;

[0124] S63. When the cylinder telescopic assembly 202 is activated, the pneumatic gripper 203 opens and enters the sealed cavity 501 through the airtight door 502;

[0125] S64. After the pneumatic gripper 203 enters the sealing cavity 501 and is in place, the pneumatic gripper 203 rises to position three and closes to clamp the sealing cover 802.

[0126] S65. The pneumatic gripper 203 rises to position two, and the female head 8021 on the sealing cover 802 and the male head 4021 at the end of the wire rope 402 of the winding assembly 400 disengage;

[0127] S66. See also Figure 27 The pneumatic gripper 203 ejects the sampler 900 through the airtight door 502;

[0128] See S67. Figure 28 The airtight door 502 drives the cylinder to actuate, and the airtight door 502 closes.

[0129] Step S7 includes:

[0130] S71. See also Figure 29 The pneumatic gripper 203 descends to position five and stops descending;

[0131] S72. See also Figure 30 The servo motor in the opening and closing assembly 300 rotates clockwise, and the servo motor in the opening and closing assembly 300 drives the second wheel 303 to rotate. The second wheel 303 drives the first wheel 301 to rotate through a belt at a certain reduction ratio. The first wheel 301 drives the container body 801 to rotate through the clamping cylinder 302. The container body 801 and the sealing cover 802 are locked together by threads.

[0132] S73. The clamping cylinder 302 in the opening and closing assembly 300 retracts.

[0133] Step S8 includes:

[0134] S81. See also Figure 31 The pneumatic gripper 203, carrying a sealed container 800 containing a sampler 900, rises to position one and waits.

[0135] See S82. Figure 32 Open the manhole cover 601, manually remove the sealed container 800 containing the sampler 900, install another sealed container 800 containing the sampler 900, and enter the next sampling cycle.

[0136] In summary, this method for sampling carbon fiber precursor solution has the following advantages:

[0137] 1. This patent uses automated sampling, which greatly reduces labor intensity and is safe and reliable;

[0138] 2. The use of airtight door 502 and electrically controlled ball valve 701 ensures the sealing of high-temperature corrosive media and prevents air from entering the reactor 700 and coming into contact with the high-temperature corrosive media, thus preventing the generation of toxic and harmful substances.

[0139] 3. The air in the sealing cavity 501 is replaced with inert gas, which ensures the sealing performance of the high-temperature corrosive medium;

[0140] 4. The winding assembly 400 adopts a winch drive method, and the sampler 900 is suspended by a steel wire rope 402 for sampling, which can save sampling space;

[0141] 5. A structure with quick-release function is provided between the sampler 900 and the winding assembly 400, which can be used with the displacement assembly 200 to quickly connect and disconnect the two;

[0142] 6. By setting the opening and closing component 300, the opening and closing component 300 can fix and tighten the sealed container 800, and at the same time can disassemble the sealed container 800 to remove the sampler 900.

[0143] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A method for sampling carbon fiber precursor solution, characterized in that, Including the following steps: S1. Provide a sealed container (800) containing a sampler (900) inside, the sealed container (800) being an openable and closable sealed container (800), the sealed container (800) including a container body (801) and a sealing cap (802), the sealing cap (802) being connected to the sampler (900); S2. The sealed container (800) is placed in a displacement assembly (200) at position one, the displacement assembly (200) including a pneumatic gripper (203), the pneumatic gripper (203) of the displacement assembly (200) gripping the sealed cap (802). S3. The sealing container (800) is transferred to the opening and closing component (300) by the displacement component (200), the opening and closing component (300) positions and opens the sealing container (800), and the opening and closing component (300) positions and drives the container body (801) to rotate, so that the container body (801) is separated from the sealing cover (802). S4. The sampler (900) is transferred to the sealed cavity (501) surrounded by the inner cavity sealing cover (500) by the displacement assembly (200), and the sealing cover (802) is connected to the end of the rope (402) of the winding assembly (400) located in the sealed cavity (501). The displacement assembly (200) and the sampler (900) are separated and transferred to the outside of the sealed cavity (501). The airtight door (502) of the sealed cavity (501) is closed. A channel is provided between the sealed cavity (501) and the reactor (700) to be sampled. The channel between the sealed cavity (501) and the reactor (700) to be sampled is sealed by the opening and closing of the electrically controlled ball valve (701). S5. Replace the air in the sealed cavity (501) with an inert gas. After the replacement is qualified, open the electric ball valve (701) to open the channel between the sealed cavity (501) and the reactor (700) to be sampled. The winding assembly (400) transfers the sampler (900) into the reactor (700) through the channel. The sampler (900) samples the medium in the reactor (700). S6. After the sampler (900) has completed sampling, the sampler (900) is transferred to the sealed cavity (501) by the winding assembly (400), the electric ball valve (701) is closed, the airtight door (502) is opened, and the sampler (900) and the winding assembly (400) are separated and transferred to the outside of the sealed cavity (501) by the displacement assembly (200). The air gripper (203) of the displacement assembly (200) enters the sealed cavity (501) and re-grabs the sealing cover (802) to separate it from the rope (402) of the winding assembly (400). Then the sampler (900) is moved out of the sealed cavity (501). S7. The sampler (900) is placed into the sealed container (800) on the opening and closing assembly (300) by the displacement assembly (200). The opening and closing assembly (300) drives the container body (801) to rotate in the opposite direction, so that the container body (801) locks with the sealing cover (802), and the sampler (900) is sealed in the sealed container (800) by the opening and closing assembly (300). S8. The displacement assembly (200) transfers the sealed container (800) to position one.

2. The method for sampling carbon fiber precursor solution according to claim 1, characterized in that, The sealed cavity (501) is enclosed by an inner cavity sealing cover (500). The displacement assembly (200), the opening and closing assembly (300), the winding assembly (400), and the sealed cavity (501) are all located above the equipment operating platform (100). The reactor (700) is located below the equipment operating platform (100). The outer sides of the displacement assembly (200), the opening and closing assembly (300), the sealed cavity (501), and the winding assembly (400) are covered with... An airtight cover (600) is provided on the airtight cover (600), and the manhole cover (601) corresponds to position one of the displacement component (200). Between steps S1 and S2, the manhole cover (601) on the airtight cover (600) is opened, and the sealed container (800) is placed on the displacement component (200) through the manhole cover (601). Between steps S2 and S3, the manhole cover (601) on the airtight cover (600) is closed.

3. The method for sampling carbon fiber precursor solution according to claim 1, characterized in that, The sealed container (800) includes a container body (801) and a sealing cap (802). The container body (801) is provided with an inlet and outlet for the sampler (900) to enter and exit. The sealing cap (802) opens and closes the inlet and outlet and is connected to the sampler (900). The displacement component (200) corresponds to the sealing cap (802). The displacement assembly (200) includes a pneumatic gripper (203), a vertically arranged slide rail (201), and a horizontally arranged cylinder telescopic assembly (202). The cylinder telescopic assembly (202) is movably mounted on the slide rail (201). The cylinder telescopic assembly (202) drives the pneumatic gripper (203). The pneumatic gripper (203) is configured to grip the sealing cap (802). Step S3 includes: S31. Move the cylinder telescopic assembly (202) on the slide rail (201); S32. Move the pneumatic gripper (203) to position four via the cylinder telescopic assembly (202) and activate the opening and closing assembly (300).

4. A method for sampling carbon fiber precursor solution according to claim 3, characterized in that, The container body (801) is a cylindrical container body, the inlet and outlet are located at one end of the container body (801) along its length, and the inner side of the inlet and outlet and the outer side of the sealing cap (802) are provided with matching threads. The opening and closing assembly (300) includes a rotatable first wheel (301), the center of which is reserved with an insertion hole that can accommodate the container body (801), and a clamping cylinder (302) is installed on the first wheel (301) in a radial direction. Step S3 further includes: S33. The sealing container (800) is pressed tightly by the pressing cylinder (302); S34. The first wheel (301) works in conjunction with the clamping cylinder (302) to drive the container body (801) to rotate, and the threads between the container body (801) and the sealing cap (802) are disengaged.

5. A method for sampling carbon fiber precursor solution according to claim 4, characterized in that, The opening / closing component (300) further includes: A rotatable second wheel (303) is connected by a servo motor and is connected to the first wheel (301) by a belt drive. The radial dimension of the second wheel (303) is smaller than that of the first wheel (301). The outer wall of the container body (801) is provided with a clamping groove (8011) corresponding to the clamping cylinder (302); In step S33, the movable end of the clamping cylinder (302) is inserted into the clamping groove (8011). In step S34, the second wheel (303) is driven to rotate by a servo motor, and the second wheel (303) drives the first wheel (301) to rotate by the belt.

6. A method for sampling carbon fiber precursor solution according to claim 3, characterized in that, An airtight door (502) is connected to the inner cavity sealing cover (500) for opening and closing. The winding assembly (400) includes a winch (401) disposed above the inner cavity sealing cover (500), a rope (402) is wound around the outside of the winch (401), a male end (4021) is provided at the end of the rope (402), a female end (8021) matching the male end (4021) is provided on the sealing cover (802), and the pneumatic gripper (203) is configured to control the separation and combination of the female end (8021) and the male end (4021); Step S4 includes: S41. Raise the pneumatic gripper (203), and the pneumatic gripper (203) drives the sampler (900) to detach from the container body (801) through the sealing cover (802); S42. The pneumatic gripper (203) rises to position two, and the airtight door (502) opens; S43. The cylinder telescopic assembly (202) drives the pneumatic gripper (203) to move, and the pneumatic gripper (203) clamps the sampler (900) and moves it through the airtight door (502) into the sealed cavity (501); S44. After the sampler (900) enters the sealed cavity (501) and is in place, the pneumatic gripper (203) rises to position three, and the female head (8021) on the sealing cover (802) is connected to the male head (4021) at the end of the rope body (402) of the winding assembly (400); S45. The pneumatic gripper (203) releases the sealing cover (802), and the pneumatic gripper (203) withdraws from the sealing cavity (501); S46. The cylinder on the airtight door (502) is activated, and the airtight door (502) is closed.

7. A method for sampling carbon fiber precursor solution according to claim 1, characterized in that, The sealed cavity (501) is connected to the high-pressure argon cylinder (503), and the channel between the sealed cavity (501) and the sampled reaction vessel (700) is connected by an electrically controlled ball valve (701). In step S4, the electrically controlled ball valve (701) closes the channel between the sealed cavity (501) and the sampled reaction vessel (700). Step S5 includes: S51. A high-pressure argon cylinder (503) fills the sealed cavity (501) with argon gas through a gas pipe, replacing the air in the sealed cavity (501); S52. After monitoring confirms that the air in the sealed cavity (501) has been adequately replaced by argon, the electrically controlled ball valve (701) is opened. S53. The sampler (900) is lowered into the reactor (700) via the channel through the winding assembly (400); S54. The sampler (900) descends into position, and the medium in the reactor (700) enters the sampler (900).

8. A method for sampling carbon fiber precursor solution according to claim 6, characterized in that, Step S6 includes: S61. Reset the winding assembly (400), and transfer the sampler (900) into the sealed cavity (501) through the winding assembly (400). When the sampler (900) is in position three, the winding assembly (400) stops working. S62. Open the airtight door (502); S63. When the cylinder telescopic assembly (202) is activated, the pneumatic gripper (203) opens and enters the sealed cavity (501) through the airtight door (502); S64. After the pneumatic gripper (203) enters the sealing cavity (501) and is in place, the pneumatic gripper (203) rises to position three and the pneumatic gripper (203) closes and clamps the sealing cover (802). S65. The pneumatic gripper (203) rises to position two, and the female head (8021) on the sealing cover (802) and the male head (4021) at the end of the rope body (402) of the winding assembly (400) disengage; S66. The pneumatic gripper (203) ejects the sampler (900) through the airtight door (502); S67. Close the airtight door (502).

9. A method for sampling carbon fiber precursor solution according to claim 4, characterized in that, Step S7 includes: S71. The pneumatic gripper (203) of the displacement assembly (200) moves to position five; S72. The opening and closing assembly (300) drives the first wheel (301) to rotate in the opposite direction. The first wheel (301) drives the container body (801) to rotate through the clamping cylinder (302). The container body (801) and the sealing cap (802) are threadedly locked. S73. The clamping cylinder (302) in the opening and closing assembly (300) retracts.

10. A method for sampling carbon fiber precursor solution according to claim 2, characterized in that, Step S8 includes: S81. The pneumatic gripper (203) rises to position one with the sealed container (800) containing the sampler (900) inside, and waits; S82. Open the manhole cover (601), manually remove the sealed container (800) containing the sampler (900), install another sealed container (800) containing the sampler (900), and enter the next sampling cycle.

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