Modular high temperature and high pressure in-situ transient spectral reaction cell

Abstract

The application provides a modular high-temperature and high-pressure in-situ transient spectral reaction cell, and relates to the technical field of spectral reaction cells.The cell body is provided with observation windows on the front and back sides, and a reaction cavity is formed in the cell body;each group of observation windows is provided with a group of window pieces;two groups of limiting assemblies are arranged, and each limiting assembly comprises a first limiting piece and a second limiting piece, which are symmetrically arranged on the outer sides of the window pieces;the sample piece placing assembly is vertically slidably arranged in the reaction cavity;the lifting assembly comprises vertical rods, which are symmetrically arranged on the two sides of the cell body;when the window pieces do not need to be replaced, the switching component is separated from the gear, the limiting assembly holds the window pieces, and the screw rod drives the sample piece placing assembly to independently lift.The lifting assembly and the limiting assembly are matched with each other, so that the window pieces can be quickly replaced by the staff to adapt to various light sources and various appearance test samples.

Description

Technical Field

[0001] This invention relates to the field of spectroscopic reaction cell technology, and specifically to a modular high-temperature and high-pressure in-situ instantaneous spectroscopic reaction cell. Background Technology

[0002] Transient absorption spectroscopy, a key technique for studying ultrafast processes in photophysics and photochemistry, can track the dynamic information of excited-state evolution, energy transfer, and chemical reaction intermediates from femtosecond to millisecond scales. It plays an irreplaceable role in revealing the microscopic mechanisms in fields such as solar cells, photocatalysis, and luminescent materials. Its basic principle involves exciting the sample with a strong "pump" light, followed by monitoring the transient change in absorbance of the sample after a specific delay time using a weak "probe" light.

[0003] As research focuses more deeply, expanding the application of instantaneous absorption spectroscopy from conventional ambient temperature and pressure to more practically significant extreme environments such as high temperature and high pressure has become an important development direction in this field. This requires the spectroscopic reaction cell to be able to precisely control extreme environments and stably introduce two ultrafast laser beams under these conditions to achieve high signal-to-noise ratio optical detection. However, existing in-situ spectroscopic cells suitable for high temperature and high pressure research have the following shortcomings in adapting to instantaneous absorption testing:

[0004] In the design of high-temperature and high-pressure spectral cells, balancing the pressure-bearing capacity and optical performance of the optical window is a core challenge. Existing technologies generally employ circular optical windows of a single, fixed diameter. To obtain sufficient incident light area for easy optical path adjustment and to maximize luminous flux, the window diameter is typically designed to be large. To withstand the resulting immense pressure, existing designs have to adopt two compromises: first, drastically increasing the window thickness to enhance structural strength, but this introduces severe dispersion, absorption, and optical aberrations, directly affecting the accuracy of ultrafast transient spectral measurements; second, using extremely high-strength but expensive materials such as sapphire and diamond, which have a fixed spectral transmission range and cannot flexibly adapt to light sources of different wavelengths. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a modular high-temperature and high-pressure in-situ instantaneous spectral reaction cell, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A modular high-temperature and high-pressure in-situ transient spectral reaction cell includes: a cell body with observation windows on both its front and rear sides, and a reaction chamber inside the cell body; windows, with a set of windows installed on the outer side of each set of observation windows; a limiting assembly, which has two sets, including a first limiting member and a second limiting member, which are symmetrically pressed against the outer ends of the windows; a sample placement assembly, which is vertically slidably installed inside the reaction chamber; and a lifting assembly, which includes uprights symmetrically arranged on both sides of the cell body, with screws installed inside the uprights. The screw has a gear on its bottom outer wall, and a switching component is installed at the bottom of the upright. The inner end of the switching component is connected to a series component, and the two ends of the series component are connected to a set of limiting components. When the window does not need to be replaced, the switching component disengages from the gear, the limiting components press the window, and the screw drives the sample placement component to rise and fall independently. When the window needs to be replaced, the switching component engages with the gear. When the screw drives the sample placement component to rise, it simultaneously drives the two sets of limiting components to unlock automatically. When the screw drives the sample placement component to fall, it simultaneously drives the two sets of limiting components to lock automatically.

[0008] Furthermore, the first limiting component includes a side stop bar and a track. The side stop bar and the track are fixedly connected to one side of the pool body respectively. The track is symmetrically fixedly connected to one side of the side stop bar. A sliding block is slidably connected to the surface of the track. An inclined pressure plate is fixedly connected to one side of the sliding block. An extension block is symmetrically fixedly connected to the other side of the sliding block. A locking rod is slidably connected inside the extension block. A locking damping rod is fixedly connected to one side of the locking rod and between the extension blocks. The two sets of locking rods are fixedly connected by an unlocking rod. An inclined column is fixedly connected to one side of the unlocking rod. A locking hole is provided on one side of the track. One end of the locking rod is inserted into the locking hole.

[0009] Furthermore, the first limiting member also includes an L-shaped stop bar and a long rod. The other side of the sliding block is symmetrically and fixedly connected to an L-shaped stop bar. The long rod is slidably connected inside the side stop bar. One end of the long rod is fixedly connected to a translation rod. The translation rod slides inside the L-shaped stop bar. One side of the translation rod is fixedly connected to an unlocking block. The second limiting member adopts the same structure as the first limiting member.

[0010] Furthermore, the lifting assembly also includes a hollow base, on the top surface of which a pool is installed. A vertical rod is symmetrically and fixedly connected to the top surface of the hollow base. A servo motor is fixedly connected inside the hollow base. The output end of the servo motor is connected to a drive rod via a worm gear and worm wheel transmission. Both ends of the drive rod are respectively connected to screws via a worm gear and worm wheel transmission. A lifting block is threaded onto the upper surface of the screw. One end of the lifting block is connected to the sample placement assembly.

[0011] Furthermore, the switching component includes a switching screw and a telescopic sleeve. The switching screw is internally threaded onto the upright. One end of the switching screw is rotatably connected to a horizontal guide rail. A telescopic sleeve is fixedly connected to one side of the horizontal guide rail and located between the inner walls of the upright. A movable rack is slidably connected to one side of the horizontal guide rail. The movable rack meshes with a gear. Movable damping rods are fixedly connected to both ends of the movable rack. Movable teeth are fixedly connected to one end of each movable damping rod.

[0012] Furthermore, the series component includes a series rod, both ends of which are fixedly connected to a long rod. A dovetail groove is provided on one side of the series rod, and a dovetail block is slidably connected in the dovetail groove. One side of the dovetail block is fixedly connected to a movable rack via a connecting rod.

[0013] Furthermore, the window slat includes a slit, a window frame is fixedly connected to the center of one side of the slit, a light-transmitting sheet is fixedly connected inside the window frame, T-shaped post caps are fixedly connected to the four sides of one side of the slit, a slit-shaped sealing ring is installed on one side of the slit and on the surface of the window frame, and a slit-shaped sealing ring is installed on the surface of the T-shaped post cap.

[0014] Furthermore, the sample placement assembly includes a sealed top plate, one end of the lifting block is fixedly connected to the sealed top plate, a sample placement plate is fixedly connected to the center of the bottom surface of the sealed top plate, a circular placement hole is provided on one side of the sample placement plate, a square placement hole is provided on the other side of the sample placement plate, the circular placement hole and the square placement hole are connected, a sample cover plate is fixedly connected to the other side of the sample placement plate by bolts, heating rods are fixedly connected to both sides inside the sample placement plate, and a thermocouple is fixedly connected to the center of the sample placement plate.

[0015] Furthermore, the sample placement assembly also includes a sealing ring and positioning posts. The sealing ring is fixedly connected to the bottom surface of the sealing top plate, and positioning posts are fixedly connected to the four sides of the bottom surface of the sealing top plate.

[0016] Furthermore, first positioning holes are respectively provided on both sides of the pool body and around the observation window, a sealing ring groove is provided on the top surface of the pool body, and second positioning holes are respectively provided on the top surface of the pool body and around the sealing ring groove. Cooling tanks that are interconnected are provided on all four sides of the interior of the pool body. Gas pipe connectors and water pipe connectors are respectively provided on both sides of the pool body. The gas pipe connectors are connected to the reaction chamber, and the water pipe connectors are connected to the cooling tanks.

[0017] This invention provides a modular high-temperature, high-pressure in-situ transient spectroscopic reaction cell. Compared with existing technologies, it has the following advantages:

[0018] 1. The servo motor in the lifting assembly drives two sets of screws to rotate, thereby driving the sample placement assembly to rise and fall. When the sample placement assembly rises, it will be convenient for staff to replace the sample later. When the sample placement assembly falls, it will enter the reaction chamber and seal the pool body, which will facilitate subsequent testing.

[0019] 2. When the window needs to be replaced, the switching component engages with the gear. After engagement, when the lifting component raises the sample placement component, the switching component will move the series component, so that the limiting component no longer limits the window, making it convenient for staff to remove the window from both sides of the pool and replace it, so as to achieve a standardized optical window that can be quickly replaced: an optical window optimized for a specific spectral band. At the same time, this disassembly method is more efficient than the traditional manual disassembly method.

[0020] 3. The sample placement plate is provided with circular and square placement holes, and a sample cover plate is installed on one side of the square placement hole. This makes it convenient for staff to place samples suitable for liquids, films or thin substrates, as well as powder solid samples, into the placement holes. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 An overall schematic diagram of the present invention is shown;

[0023] Figure 2 This diagram shows another perspective view of the overall invention;

[0024] Figure 3 A schematic diagram of the sample placement assembly of the present invention is shown;

[0025] Figure 4 A partial cross-sectional schematic diagram of the sample placement assembly of the present invention is shown;

[0026] Figure 5 A schematic diagram of the window panel splitting of the present invention is shown;

[0027] Figure 6 This diagram shows a partially enlarged view of the entire invention.

[0028] Figure 7 A schematic diagram of the limiting component of the present invention is shown;

[0029] Figure 8 A schematic diagram of the disassembled limiting component of the present invention is shown;

[0030] Figure 9 A schematic diagram of the pool body of the present invention is shown;

[0031] Figure 10 This diagram shows another perspective view of the pool body of the present invention;

[0032] Figure 11 A partial cross-sectional schematic diagram of the pool body of the present invention is shown;

[0033] Figure 12 A schematic diagram of the hollow base of the present invention is shown;

[0034] Figure 13 A partial cross-sectional schematic diagram of the lifting assembly of the present invention is shown;

[0035] Figure 14 A schematic diagram of the switching component of the present invention is shown;

[0036] Figure 15 This diagram shows another perspective view of the switching component of the present invention;

[0037] As shown in the figure:

[0038] 100. Tank body; 101. Observation window; 102. Reaction chamber; 103. First positioning hole; 104. Sealing ring groove; 105. Second positioning hole; 106. Cooling tank; 107. Gas pipe connector; 108. Water pipe connector;

[0039] 200. Window slat; 201. Opening slat; 202. Window frame; 203. Light-transmitting slat; 204. T-shaped column capital; 205. Opening sealing ring;

[0040] 300. Limiting component; 301. Side stop bar; 302. Track; 303. Sliding block; 304. Inclined pressure plate; 305. Extension block; 306. Locking rod; 307. Locking damping rod; 308. Unlocking rod; 309. Inclined column rod; 310. Locking hole; 311. L-shaped stop bar; 312. Long rod; 313. Translation rod; 314. Unlocking block;

[0041] 400. Sample placement assembly; 401. Sealing top plate; 402. Sample placement plate; 403. Circular placement hole; 404. Square placement hole; 405. Sample cover plate; 406. Heating rod; 407. Thermocouple; 408. Sealing ring; 409. Positioning post;

[0042] 500. Lifting assembly; 501. Upright pole; 502. Screw; 503. Gear; 504. Hollow base; 505. Servo motor; 506. Drive rod; 507. Lifting block; 508. Switching screw; 509. Telescopic sleeve rod; 510. Horizontal guide rail; 511. Moving rack; 512. Movable damping rod; 513. Movable tooth; 514. Connecting rod; 515. Dovetail groove; 516. Dovetail block; 517. Connecting rod. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] To address the technical problems in the background section, a modular high-temperature and high-pressure in-situ transient spectral reaction cell is proposed as follows:

[0045] Combination Figures 1-15 As shown, the present invention provides a modular high-temperature and high-pressure in-situ transient spectral reaction cell, comprising: a cell body 100, with observation windows 101 on both its front and rear sides, and a reaction chamber 102 inside the cell body 100; window plates 200, with a set of window plates 200 installed on the outer side of each set of observation windows 101; a limiting assembly 300, which is provided in two sets, the limiting assembly including a first limiting member and a second limiting member, the first limiting member and the second limiting member being symmetrically pressed against the outer ends of the window plates 200; a sample placement assembly 400, which is vertically slidably installed in the reaction chamber 102; and a lifting assembly 500, which includes uprights 501, the uprights being symmetrically arranged in the cell body. On both sides of body 100, screws 502 are installed inside the uprights 501. Gears 503 are provided on the bottom outer wall of the screws 502. A switching component is installed at the bottom of the uprights 501. The inner end of the switching component is connected to a series component. Each end of the series component is connected to a set of limiting components. When the window slat does not need to be replaced, the switching component disengages from the gear, the limiting components press the window slat, and the screw drives the sample placement component to rise and fall independently. When the window slat needs to be replaced, the switching component engages with the gear. When the screw drives the sample placement component to rise, it simultaneously drives the two sets of limiting components to unlock automatically. When the screw drives the sample placement component to fall, it simultaneously drives the two sets of limiting components to lock automatically.

[0046] Through the above structure:

[0047] 1. The integrated pool body, window, limiting components, sample placement components, and lifting components are modularized as a whole, suitable for high temperature and high pressure in-situ instantaneous spectral detection scenarios;

[0048] 2. Dual working modes are achieved through switching components and connecting components: when there is no need to change the window, the sample can be raised and lowered independently; when the window needs to be changed, the screw lift synchronously drives the limit component to unlock or lock, which greatly simplifies the operation and is more efficient than the traditional disassembly and replacement by staff.

[0049] 3. Two sets of symmetrical limiting components hold the window slats in place, ensuring the stability and sealing of the window slats during installation under high temperature and high pressure;

[0050] 4. The sample placement component enables the replacement and storage of samples. After replacement and storage, the sample placement component can also seal the pool body, facilitating subsequent testing.

[0051] In this embodiment, the first limiting member includes a side stop bar 301 and a track 302. The side stop bar 301 and the track 302 are fixedly connected to one side of the pool body 100. The track 302 is symmetrically fixedly connected to one side of the side stop bar 301. A sliding block 303 is slidably connected to the surface of the track 302. An inclined pressure plate 304 is fixedly connected to one side of the sliding block 303. An extension block 305 is symmetrically fixedly connected to the other side of the sliding block 303. A locking rod 306 is slidably connected inside the extension block 305. A locking damping rod 307 is fixedly connected to one side of the locking rod 306 and between the extension blocks 305. The two sets of locking rods 306 are fixedly connected by an unlocking rod 308. An inclined column rod 309 is fixedly connected to one side of the unlocking rod 308. A locking hole 310 is provided on one side of the track 302. One end of the locking rod 306 is inserted into the locking hole 310.

[0052] The above structure enables the inclined pressure plate to slide in a directional manner through the track and sliding block, thus pressing or releasing the window slats; the locking rod and locking hole are inserted and matched to realize the positioning and locking of the limiting component, preventing loosening under high pressure; the inclined column rod and unlocking rod form a linkage unlocking structure, which has direct power transmission and a compact structure.

[0053] In this embodiment, the first limiting member also includes an L-shaped stop bar 311 and a long rod 312. The L-shaped stop bar 311 is symmetrically fixedly connected to the other side of the sliding block 303. The long rod 312 is slidably connected inside the side stop bar 301. One end of the long rod 312 is fixedly connected to a translation rod 313. The translation rod 313 slides inside the L-shaped stop bar 311. An unlocking block 314 is fixedly connected to one side of the translation rod 313. The second limiting member adopts the same structure as the first limiting member.

[0054] Through the above structure, the L-shaped stop bar, the sliding bar, and the unlocking block form a linkage transmission structure, which transmits the power of the lifting component to the unlocking component. The long bar 312 drives the sliding bar 313 to move back and forth within the L-shaped stop bar 311. When the sliding bar contacts the L-shaped stop bar 311, the locking bar 306 is unlocked, and the sliding block 303 and the inclined pressure plate 304 are moved away from the window slab 200, which facilitates the replacement of the window slab later. When the long bar 312 contacts the sliding block 303, the locking bar 306 is waiting to be inserted into the locking state. At this time, the long bar 312 will use the sliding bar 313 to push the sliding block 303 to move, so that the sliding block 303 is locked and the window slab 200 is limited and fixed.

[0055] In this embodiment, the lifting assembly 500 also includes a hollow base 504. A pool body 100 is installed on the top surface of the hollow base 504. A vertical rod 501 is symmetrically and fixedly connected to the top surface of the hollow base 504. A servo motor 505 is fixedly connected inside the hollow base 504. The output end of the servo motor 505 is connected to a drive rod 506 through a worm gear and worm wheel transmission. Both ends of the drive rod 506 are respectively connected to screws 502 through a worm gear and worm wheel transmission. A lifting block 507 is threadedly connected to the upper surface of the screw 502. One end of the lifting block 507 is connected to the sample placement assembly 400. The vertical rod 501 has an H-shaped design.

[0056] Through the above structure: the servo motor 505 drives the drive rod 506 to rotate, the drive rod 506 drives the two sets of screws 502 to rotate, thereby driving the two sets of lifting blocks 507 to lift and lower, which will drive the sample placement assembly 400 to lift and lower, making it convenient to replace the sample later; the H-shaped upright provides integrated installation space for screws, gears and switching components, with high space utilization.

[0057] In this embodiment, the switching component includes a switching screw 508 and a telescopic sleeve 509. The switching screw 508 is internally threaded onto the upright 501. One end of the switching screw 508 is rotatably connected to a horizontal guide rail 510. The telescopic sleeve 509 is fixedly connected to one side of the horizontal guide rail 510 and located between the inner walls of the upright 501. A movable rack 511 is slidably connected to one side of the horizontal guide rail 510. The movable rack 511 meshes with a gear 503. Movable damping rods 512 are fixedly connected to both ends of the movable rack 511. Movable teeth 513 are fixedly connected to one end of the movable damping rod 512.

[0058] The above structure enables horizontal directional movement through a switching screw and telescopic sleeve, controlling the engagement / disengagement of the moving rack and gear; the horizontal guide rail ensures smooth sliding of the moving rack and reliable gear engagement without misalignment; the movable damping rod and movable teeth assist in engagement after unlocking to ensure normal screw rotation and prevent the mechanism from jamming.

[0059] In this embodiment, the series component includes a series rod 514, with both ends of the series rod 514 fixedly connected to a long rod 312. A dovetail groove 515 is provided on one side of the series rod 514, and a dovetail block 516 is slidably connected in the dovetail groove 515. One side of the dovetail block 516 is fixedly connected to a movable rack 511 through a connecting rod 517.

[0060] Through the above structure: the connecting rod connects the two long rods to realize the synchronous action of the double-sided limiting components; the dovetail groove and dovetail block slide cooperation, when the switching component meshes or separates from the gear, or when the connecting rod 514 is moved later, it can transmit power without interfering with the horizontal movement of the switching component; the connecting rod connects the moving rack and the connecting rod to realize the seamless transmission of the lifting gear power to the limiting components.

[0061] In this embodiment, the window panel 200 includes a shaped panel 201. A window frame 202 is fixedly connected to the middle of one side of the shaped panel 201. A light-transmitting panel 203 is fixedly connected inside the window frame 202. T-shaped post caps 204 are fixedly connected to the four sides of one side of the shaped panel 201. A shaped sealing ring 205 is installed on one side of the shaped panel 201 and on the surface of the window frame 202. A shaped sealing ring 205 is installed on the surface of the T-shaped post cap 204.

[0062] The above structure—a mortise-shaped piece and a T-shaped cap—enables rapid positioning and installation of the window piece, resulting in high assembly and disassembly efficiency. The mortise-shaped sealing ring, located between the pool body and the mortise-shaped piece, creates a seal between them, ensuring smooth subsequent testing. The T-shaped cap 204 not only facilitates the positioning and installation of the window piece 200 but also secures the mortise-shaped sealing ring 205, making it easy to replace the mortise-shaped sealing ring 205 later.

[0063] In this embodiment, the sample placement assembly 400 includes a sealing top plate 401. One end of the lifting block 507 is fixedly connected to the sealing top plate 401. A sample placement plate 402 is fixedly connected to the center of the bottom surface of the sealing top plate 401. A circular placement hole 403 is provided on one side of the sample placement plate 402, and a square placement hole 404 is provided on the other side of the sample placement plate 402. The circular placement hole 403 and the square placement hole 404 communicate with each other. A sample cover plate 405 is fixedly connected to the other side of the sample placement plate 402 by bolts. Heating rods 406 are fixedly connected to both sides inside the sample placement plate 402, and a thermocouple 407 is fixedly connected to the center of the sample placement plate 402.

[0064] The above structure features a circular and square placement hole design, making it compatible with various samples such as liquids, films, substrates, and powders, offering strong versatility. The sample cover plate is bolted in place, facilitating easy removal of the cover plate by staff later. During installation, the sample is securely clamped, and during disassembly, it is easy to remove the sample. The built-in heating rod and thermocouple enable sample temperature control, making it suitable for high-temperature in-situ detection. The sealed top plate seals the tank, creating a closed reaction chamber within the tank, meeting the requirements of high-pressure detection environments.

[0065] In this embodiment, the sample placement assembly 400 further includes a sealing ring 408 and a positioning post 409. The sealing ring 408 is fixedly connected to the bottom surface of the sealing top plate 401, and the positioning post 409 is fixedly connected to the four sides of the bottom surface of the sealing top plate 401.

[0066] The above structure enhances the sealing effect between the sealing top plate and the pool body through the sealing ring, completely blocking gas / liquid leakage; the positioning column enables the positioning of the sample assembly and the pool body, ensuring assembly coaxiality and making the seal more reliable.

[0067] In this embodiment, first positioning holes 103 are respectively provided on both sides of the pool body 100 and around the observation window 101. A sealing ring groove 104 is provided on the top surface of the pool body 100. Second positioning holes 105 are respectively provided on the top surface of the pool body 100 and around the sealing ring groove 104. Cooling tanks 106 that are interconnected are provided on all four sides inside the pool body 100. Air pipe connectors 107 and water pipe connectors 108 are respectively provided on both sides of the pool body 100. Air pipe connectors 107 are connected to the reaction chamber 102, and water pipe connectors 108 are connected to the cooling tanks 106.

[0068] The above structure, with its four-sided interconnected cooling tank and water pipe joints, enables circulating cooling, preventing high-temperature deformation of the tank and protecting the 200mm window. The pipe joints directly connect to the reaction chamber, allowing for vacuuming / passing through the reaction atmosphere to meet the requirements of high-pressure environment construction. The first positioning hole is adapted for window positioning, while the second positioning hole and sealing ring groove are adapted for sample assembly positioning and subsequent sealing.

[0069] Working principle and usage process of this invention:

[0070] In use:

[0071] First usage method: Only replace the sample piece inside the placement hole, without replacing the window plate 200:

[0072] Start the servo motor 505, which drives the drive rod 506 to rotate. The drive rod 506 synchronously drives the two sets of screws 502 to rotate. When the screws 502 rotate, the drive lifting block 507 moves upward, which in turn drives the sample placement assembly 400 to move upward, so that the sample placement plate 402 is removed from the reaction chamber 102.

[0073] After the sample placement plate 402 is removed, the staff removes the sample cover plate 405, exposing the square placement hole 404, removes the original sample from the hole, and replaces it with a new sample. Note: During this operation, the switching component and gear 503 are in a disengaged state.

[0074] After the sample replacement is completed, the sample cover plate 405 is fixed to one side of the sample placement plate 402 with bolts. The sample cover plate 405 presses the sample into the square placement hole 404, thus completing the sample replacement.

[0075] The servo motor 505 drives the screw 502 to rotate in the opposite direction, and the sample placement assembly 400 moves down as a whole. After the sample placement plate 402 enters the reaction chamber 102, the sealing top plate 401 adheres to the top surface of the tank body 100, sealing the reaction chamber 102 and creating a sealed environment inside the tank body 100 to prepare for subsequent testing.

[0076] The second method of use: Replace the sample piece inside the placement hole, and at the same time replace the window piece 200.

[0077] Connection of switching components: Rotating the switching screw 508, under the action of the telescopic sleeve 509, drives the horizontal guide rail 510, the moving rack 511, the movable tooth 513, the dovetail block 516 and the connecting rod 517 to move; the dovetail block 516 slides along the dovetail groove 515, and the moving rack 511 meshes with the gear 503, completing the connection between the switching component and the gear 503.

[0078] Component lifting and unlocking: Servo motor 505 drives drive rod 506 to rotate, drive rod 506 drives two sets of screws 502 to rotate, on the one hand driving sample placement component 400 to rise, and on the other hand driving gear 503 to rotate; gear 503 drives moving rack 511 to slide along horizontal guide rail 510, moving rack 511 drives two sets of long rods 312 to move through connecting rod 517 and series rod 514, long rods 312 drive translation rod 313 and unlocking block 314 to move.

[0079] Window slat lock release: Unlocking block 314 presses against inclined rod 309, inclined rod 309 drives locking rod 306 to move, causing one end of locking rod 306 to disengage from locking hole 310, while simultaneously stretching locking damping rod 307; after locking rod 306 disengages, translation rod 313 contacts L-shaped stop rod 311, pulling sliding block 303 and inclined pressure plate 304 to move, inclined pressure plate 304 no longer presses against window slat 200, and locking rod 306 moves away from locking hole 310 along with sliding block 303.

[0080] The component is completely disengaged: the gear 503 meshes with the movable tooth 513 to ensure that the screw 502 rotates normally, and the lifting block 507 drives the sample placement component 400 to completely disengage from the reaction chamber 102; the staff can simultaneously remove and replace the window 200, and remove the sample cover plate 405 to replace the sample in the square placement hole 404.

[0081] Reset and Sealing: After the sample and window are replaced, the servo motor 505 rotates in the reverse direction, and the sample placement assembly 400 retracts into the reaction chamber 102; the screw 502 drives the gear 503 to reverse, and the gear 503 drives the moving rack 511 to move towards the pool body 100. The connecting rod 514 drives the long rod 312 and the translation rod 313 to move, pushing the sliding block 303 and the inclined pressure plate 304 to move. The inclined pressure plate 304 re-presses and fixes the window 200, forming a seal at the connection. Note: During this process, the translation rod 313 no longer contacts the inclined column rod 309 through the unlocking block 314, nor does it contact the L-shaped stop rod 311; it only contacts the sliding block 303.

[0082] Equipment testing and usage procedures:

[0083] An external vacuum device is connected via the duct connector 107 to evacuate the reaction chamber 102.

[0084] After vacuum treatment is completed, external coolant is injected through water pipe joint 108, and the coolant enters the cooling tank 106.

[0085] The heating rod 406 is activated to heat the sample in the square placement hole 404; during the heating process, the sample temperature is detected by the thermocouple 407.

[0086] An external spectrometer observes the changes in the internal sample during the heating process through window 200 and records the data.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular high-temperature and high-pressure in-situ transient spectral reaction cell, characterized in that, include: The pool body has observation windows on both the front and rear sides, and a reaction chamber is located inside the pool body. Each set of observation windows has a set of window panes installed on its outer side; The limiting component has two sets, including a first limiting member and a second limiting member, which are symmetrically pressed against the outer ends of the window panel. The sample placement assembly is vertically slidably installed inside the reaction chamber; The lifting assembly includes uprights symmetrically arranged on both sides of the pool body. A screw is installed inside the upright, and a gear is provided on the bottom outer wall of the screw. A switching component is installed at the bottom of the upright, and the inner end of the switching component is connected to a series component. A set of limiting components is connected to both ends of the series component. When the window slat does not need to be replaced, the switching component disengages from the gear, the limiting component presses the window slat, and the screw drives the sample placement component to rise and fall independently. When the window needs to be replaced, the switching component engages the contact gear; when the screw drives the sample placement assembly to rise, it simultaneously drives the two sets of limit components to automatically unlock; when the screw drives the sample placement assembly to fall, it simultaneously drives the two sets of limit components to automatically lock. The first limiting component includes a side stop bar and a track. The side stop bar and the track are fixedly connected to one side of the pool body respectively. The track is symmetrically fixedly connected to one side of the side stop bar. A sliding block is slidably connected to the surface of the track. A inclined pressure plate is fixedly connected to one side of the sliding block. An extension block is symmetrically fixedly connected to the other side of the sliding block. A locking rod is slidably connected inside the extension block. A locking damping rod is fixedly connected to one side of the locking rod and between the extension blocks. The two sets of locking rods are fixedly connected by an unlocking rod. An inclined column rod is fixedly connected to one side of the unlocking rod. A locking hole is provided on one side of the track. One end of the locking rod is inserted into the locking hole. The switching component includes a switching screw and a telescopic sleeve. The switching screw is internally threaded onto the upright. One end of the switching screw is rotatably connected to a horizontal guide rail. A telescopic sleeve is fixedly connected to one side of the horizontal guide rail and between the upright and the inner wall. A movable rack is slidably connected to one side of the horizontal guide rail. The movable rack meshes with a gear. Movable damping rods are fixedly connected to both ends of the movable rack. Movable teeth are fixedly connected to one end of each movable damping rod.

2. The modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 1, characterized in that: The first limiting member also includes an L-shaped stop bar and a long rod. The other side of the sliding block is symmetrically and fixedly connected to an L-shaped stop bar. The long rod is slidably connected inside the side stop bar. One end of the long rod is fixedly connected to a translation rod. The translation rod slides inside the L-shaped stop bar. One side of the translation rod is fixedly connected to an unlocking block. The second limiting member adopts the same structure as the first limiting member.

3. The modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 2, characterized in that: The lifting assembly also includes a hollow base, on the top surface of which a pool is installed. A vertical rod is symmetrically and fixedly connected to the top surface of the hollow base. A servo motor is fixedly connected inside the hollow base. The output end of the servo motor is connected to a drive rod via a worm gear and worm wheel transmission. Both ends of the drive rod are connected to screws via worm gears and worm wheels. A lifting block is threaded onto the upper surface of the screw. One end of the lifting block is connected to the sample placement assembly.

4. The modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 3, characterized in that: The series component includes a series rod, both ends of which are fixedly connected to a long rod. A dovetail groove is provided on one side of the series rod, and a dovetail block is slidably connected in the dovetail groove. One side of the dovetail block is fixedly connected to a movable rack via a connecting rod.

5. The modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 4, characterized in that: The window slat includes a slit, a window frame is fixedly connected to the middle of one side of the slit, a light-transmitting sheet is fixedly connected inside the window frame, T-shaped post caps are fixedly connected to the four sides of one side of the slit, a slit-shaped sealing ring is installed on one side of the slit and on the surface of the window frame, and a slit-shaped sealing ring is installed on the surface of the T-shaped post cap.

6. The modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 5, characterized in that: The sample placement assembly includes a sealed top plate. One end of the lifting block is fixedly connected to the sealed top plate. A sample placement plate is fixedly connected to the center of the bottom surface of the sealed top plate. A circular placement hole is provided on one side of the sample placement plate, and a square placement hole is provided on the other side of the sample placement plate. The circular placement hole and the square placement hole are connected in communication. A sample cover plate is fixedly connected to the other side of the sample placement plate by bolts. Heating rods are fixedly connected to both sides inside the sample placement plate, and a thermocouple is fixedly connected to the center of the sample placement plate.

7. The modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 6, characterized in that: The sample placement assembly also includes a sealing ring and positioning posts. The sealing ring is fixedly connected to the bottom surface of the sealing top plate, and positioning posts are fixedly connected to the four sides of the bottom surface of the sealing top plate.

8. A modular high-temperature and high-pressure in-situ transient spectral reaction cell according to claim 7, characterized in that: The pool body has first positioning holes on both sides and around the observation window. The top surface of the pool body has a sealing ring groove. The top surface of the pool body has second positioning holes around the sealing ring groove. The four sides inside the pool body have interconnected cooling tanks. The two sides of the pool body have air pipe connectors and water pipe connectors. The air pipe connectors are connected to the reaction chamber, and the water pipe connectors are connected to the cooling tanks.

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