266 results about "Cleanroom" patented technology

Mobile, expandable cleanroom systems, methods, and devices are provided in accordance with various embodiments. Various embodiments include an expandable cleanroom that may include one or more tent enclosures and one or more door assemblies. Some embodiments include one or more HVAC systems. Some embodiments include a raisable truss structure that may lift and support the one or more tent enclosures. The expandable cleanroom may be coupled with an antechamber and / or a mechanical room. The combination of expandable cleanroom, antechamber, and / or mechanical room may be based on the form of a shipping container that may be transported by flatbed truck, railcar, boat, or other vehicles. This May allow for rapid deployment along with avoiding the need for wide-load permits; the various embodiments may also provide for inconspicuous deployment.

The invention discloses a self-repairing composite floor for a clean room and a preparation method of the self-repairing composite floor, and the preparation method comprises the following steps: carrying out amination treatment on nano silicon dioxide and carbon quantum dots by using a silane coupling agent, and sulfonating polyethersulfone ketone by using concentrated sulfuric acid; the preparation method comprises the following steps: carrying out curing treatment on epoxy resin, an amine curing agent, N-hydroxyethyl maleimide and tetrakis (3-mercaptopropionic acid) pentaerythritol ester to obtain epoxy-mercaptan resin; the preparation method comprises the following steps: carrying out prepolymerization reaction on vacuum dehydrated polyester polyol, tetrahydroxyethyl ethylenediamine, furanpropanol, diisocyanate, a catalyst, 2, 2 '-thiodiethanol and hydroxyl silicone oil to obtain a star-shaped polyurethane prepolymer, adding epoxy-thiol resin, glyceryl borate, sulfonated polyethersulfone ketone, aminated silicon dioxide, aminated carbon quantum dots and an auxiliary agent, carrying out ultrasonic treatment, and carrying out drying to obtain the star-shaped polyurethane resin. The self-repairing coating material is obtained; and coating the self-repairing coating material on the surface of a base plate, and performing hot-pressing curing molding to obtain the self-repairing composite floor for the clean room.

The utility model discloses an inclined double-extending-position line side bin structure which comprises a bearing rack used for bearing material boxes, an RGV used for transporting the material boxes in the bearing rack and taking and placing the material boxes, butt joint devices arranged on the peripheral side of the bearing rack and an AGV used for conveying the material boxes among the butt joint devices. Through the arrangement of the butt joint device and the AGV, the material box can be conveyed between the butt joint device through the AGV, the material box is overturned to a specific angle through the overturning assembly in the butt joint device so as to be matched with the optimal storage angle of materials, the optimal storage effect is achieved, the RGV is supported through the jacking assembly, the stability of the RGV is improved, and the working efficiency of the RGV is improved. Goods are ensured to be picked and placed at a parallel angle, meanwhile, the conditions of a dust-free workshop are met, the storage quality of the goods is ensured, automatic conveying of material boxes can be achieved through the AGV and the RGV, the picking and placing efficiency is improved, the storage positions of various products can be recorded through the master control system, and intelligent classification is achieved.

This invention provides a continuous forming device for highly absorbent cleanroom paper, relating to the field of cleanroom paper production technology. It includes a conveyor and a raw material spraying assembly, an adhesive spraying assembly, and a drying oven sequentially arranged on the conveyor. The conveyor has an adsorption and conveying function. The raw material spraying assembly carries the paper fiber mixture and evenly feeds it onto the conveyor. The conveyor transports the paper fiber mixture to the adhesive spraying assembly. The adhesive spraying assembly carries the adhesive mixture. This invention, by connecting the raw material spraying assembly, adhesive spraying assembly, drying oven, and scraper in series via the conveyor, achieves fully automated operation from raw material feeding, adhesive compaction, to drying and unloading. The finished product is finally unloaded by the scraper. The entire process requires no manual intervention, significantly shortening the production cycle, increasing output per unit time, and avoiding errors caused by manual operation, thus ensuring consistent product quality.

A kit of parts for sealing openings between an enclosure extending through a wall separating a cleanroom and a space outside the cleanroom. Multiple gaskets, frame members, and a lower skirt are positioned to seal any openings between the side, top and bottom surfaces of the enclosure and proximate wall surfaces. The sealing components can be easily installed without the use of tools.

The invention discloses an operating room purification environment self-adaptive regulation and control method and system based on time sequence prediction, and relates to the technical field of air conditioning. According to the operating room purification environment self-adaptive regulation and control method based on time sequence prediction, the environment state of an operating room and purification air conditioner operation time sequence data are continuously obtained in a set sliding regulation and control period, and a collaborative feature set is generated through associated feature mining; extracting a predicted collaborative feature set through a time sequence prediction model in combination with historical collaborative features; performing security domain definition based on the operation state set and a preset mapping relation library, and determining a purification control domain; according to the method, the operating room is subjected to environment regulation and control through the prediction optimization control set, so that the accuracy of environment regulation and control is improved, the problem of regulation and control lag caused by real-time fluctuation of the environment is avoided, operation parameters of a purification air conditioner are matched in advance, and then the cleanliness of the operating environment is guaranteed.

The invention belongs to the technical field of simulation modeling, and provides a BIM-based clean room modular modeling method and system, and the method comprises the steps: determining a multi-level structure module and multi-dimensional metadata of a target clean room, carrying out the parametric modeling of the multi-level structure module according to the multi-dimensional metadata, and generating a dynamic module library; key design parameters input by a user are received, target modules are matched from the dynamic module library according to the key design parameters, the target modules are integrated according to the key design parameters, and an initial three-dimensional model is obtained; updating and optimizing the initial three-dimensional model through a pre-built BIM collaboration platform to obtain a BIM model; and generating and outputting construction operation and maintenance data according to the BIM model. According to the scheme, by constructing the dynamic module library and a multi-parameter linkage modeling mechanism, the modeling efficiency and the modeling precision are greatly improved, multi-specialty cooperation is achieved through the BIM cooperation platform, the requirements of the clean room industry for high-precision and high-efficiency modeling are better met, and the adaptability of the modeling link is improved.

This invention relates to a method for simulating airflow modeling in cleanrooms of electronic factories, belonging to the field of simulation modeling technology. It solves the problem that existing modeling methods cannot simultaneously guarantee accuracy and speed / efficiency. The method includes: obtaining 3D information of simulation primitives based on various design drawings of the cleanroom; performing modeling in CFD preprocessing software based on the 3D information of the simulation primitives to generate a geometric model; treating all FFUs and all raised floors in the geometric model as a single unit corresponding to a face; meshing the geometric model, using each vertex of each FFU and each raised floor in the simulation primitives as virtual nodes; reconstructing the face mesh of the FFUs and raised floors; optimizing all face meshes; and then reconstructing and optimizing the volume mesh to obtain the input model for airflow simulation calculations. This method simultaneously improves modeling efficiency and accuracy.

This utility model relates to the field of steel door technology and discloses a safety protection structure for preventing hand pinching in steel cleanroom doors. The structure includes a door frame, a support frame fixedly connected to the top of the door frame, a motor fixedly connected inside the support frame, an elliptical wheel fixedly connected to the drive end of the motor, a sliding shaft fixedly connected to the top of the elliptical wheel, a connecting rod slidably connected to the outer wall of the sliding shaft, a fixed shaft rotatably connected to the inner wall of the connecting rod, a rotating block fixedly connected to the outer wall of the fixed shaft, and a rotating shaft rotatably connected to the top of the rotating block. In this utility model, an infrared sensor controls the motor to drive the elliptical wheel to rotate, stopping the cleanroom door from rotating and causing it to rotate outwards. When an object moves away from the vicinity of the cleanroom door, the motor reverses, the sliding shaft slides to the end of the groove, and the connecting rod drives the rotating block to reset, achieving the anti-pinch function. This structure also provides safety protection; even when the door is stopped, it can still rotate in the opposite direction to prevent objects from getting stuck, thus improving the protection level.

1. The name of the design product: user interface of clean room dust particle environment monitoring system for electronic equipment (A1). 2. The use of the design product: for an electronic device. 3. The design points of the design product: the interface content of the graphical user interface. 4. The picture or photo that best shows the design points: front view. 5. The use of the graphical user interface: the graphical user interface of the present design is used for monitoring the clean room dust particle environment, including monitoring cleanliness level, particle value, temperature, humidity, pressure difference, dew point, noise, wind speed, illumination, personnel cleaning, environment cleaning punch card, etc. 6. The human-computer interaction mode of the graphical user interface: the system is a preset system, after the user opens the electronic device, the main view is directly presented, the main view is the display page of cleanliness level, particle quantity, temperature and humidity, etc., the upper part of the interface displays the third party name or logo, cleanliness level, cleanliness standard, time; when the user clicks the third party name or logo above the main view interface, the interface jumps to the "background interface" of change state figure 1, the user clicks "settings" of the "background interface" of change state figure 1, the interface jumps to the "setting interface" of change state figure 2, by clicking "template selection" in the upper right corner of change state figure 2, the interface jumps to the "template interface" of change state figure 3, in the "template interface" of change state figure 3, the third party can select the corresponding point position template interface picture according to the number of sensors installed in the workshop, 1-100 points, click any "switch template" in change state figure 3, the interface jumps to any one of change state figure 4……change state figure 43, when selecting any one of change state figure 4……change state figure 43 in change state figure 3, the unselected template interface will also be adapted to the carousel on the electronic device. 7. Other circumstances that need to be explained: "xxx" in the interface represents variable text or numbers; the curves in each interface will present different curves with the change of sensor output signal value.

This invention provides a distributed sensor fault-tolerant collaborative control method and system based on spatial interpolation reconstruction. The method includes: intelligent actuator nodes maintaining a list of neighboring sensors and receiving the measured values ​​and self-confidence levels of each sensor; the actuator nodes dynamically calculating the confidence level of each neighboring sensor; when the confidence level of the master sensor is lower than a fault threshold, the actuator nodes automatically select a set of reliable sensors, reconstruct the environmental parameters of the control point using inverse distance weighted or Kriging interpolation, and use the reconstructed values ​​as feedback for control output; simultaneously, the system continuously monitors failed sensors and automatically switches back to the measured values ​​after the sensor recovers. This invention eliminates the need for redundant hardware, completes fault detection and parameter reconstruction at the edge level in milliseconds, achieves reconstruction accuracy that meets control requirements, significantly reduces system costs, improves fault tolerance, real-time performance, and control continuity, and is suitable for environments such as laboratories and cleanrooms.

A cleanroom ceiling support system can include a ceiling support section. The ceiling support section can include a set of perimeter sticks, a set of interior runner sticks, a set of interior cross sticks, a first mounting bracket, and a second mounting bracket. The set of interior runner sticks can be configured to be assembled within a perimeter defined by the set of perimeter sticks and orientated in a first direction. The set of interior cross sticks can be configured to be assembled within the perimeter defined by the set of perimeter sticks and orientated in a second direction. The first mounting bracket can be configured to connect any combination of perimeter and interior sticks. The second mounting bracket can be configured to connect any combination of perimeter and interior sticks.

This utility model discloses a thin-film silk-coated enameling machine, belonging to the field of enameling machines. It includes an enameling machine body, with a cleanroom on the upper surface of the body. A dust removal mechanism is provided on the upper surface of the cleanroom, including a baffle. A sliding rod is fixedly connected to the front surface of the baffle, penetrating the cleanroom and slidably connected to it. A cylinder is fixedly connected to the upper surface of the cleanroom, with its output shaft fixedly connected to the baffle. Rectangular grooves are linearly arrayed on the front surface of the baffle. Through the baffle, sliding rod, filter screen, movable rod, and cylinder, after prolonged use of the cleanroom, the cylinder drives the baffle to move backward, causing the filter screen to move backward and exit the cleanroom. Simultaneously, a rotating rod causes the filter screen to vibrate up and down during movement, facilitating cleaning and improving cleaning efficiency.

This utility model relates to a cleanroom air conditioning and dust removal system, belonging to the field of cleanroom technology in the pharmaceutical industry. The system includes a combined cleanroom air conditioning unit, a bag filter, an air supply duct network, a high-efficiency filter air outlet, a return air duct network, a dust removal exhaust hood, a dust removal static pressure box, a dust concentration sensor, and a controller. The bag filter is rigidly connected to the air conditioning unit side-by-side and fixed to the floor of the equipment room, eliminating interference from the equipment to the cleanroom. The outlet of the bag filter is directly connected to the mixing section of the air conditioning unit through the return air duct network, forcibly reusing the dust-removed air as return air. The dust concentration sensor is embedded in the inner wall of the dust removal static pressure box, directly exposed to the dust-laden airflow channel. This application significantly reduces the air conditioning cooling and heating load by physically reducing the demand for fresh air; the centralized layout of the equipment room frees up space in the cleanroom, improving the convenience of operation and maintenance; and the closed-loop dust collection and multi-stage filtration ensure the stability of cleanliness levels D and above.

This invention relates to the field of pharmaceutical automation equipment and discloses an intelligent sampling robot suitable for drug production. The robot includes a multi-sensor fusion positioning system, a force control coordination system, and a cleanroom structure design. The multi-sensor fusion positioning system comprises a 3D laser positioning module, a binocular vision module, a sub-pixel edge detection module, and a sensor fusion algorithm. The force control coordination system includes a hybrid RNN-LSTM (Recurrent Short-Term Memory) and CNN (Convolutional Neural Network) network, an airbag gripper, a six-dimensional force sensor, and an underactuated rotation mechanism. The cleanroom structure design includes a mechanical gripper, a nano-sterile coating, and a stainless steel IP69K sealing structure. By employing a fusion algorithm combining extended Kalman filtering and fuzzy evidence theory, efficient fusion of multi-sensor data is achieved. Dynamic threshold adjustment is realized through the hybrid RNN-LSTM and CNN network, reducing force control fluctuations and lowering production costs.

Method for performing a filter test, wherein a) a plurality of hoses (5) are or are laid from a first cleanroom (17.1) of a first, higher cleanroom class to a second cleanroom (17.2) of a second, lower cleanroom class, wherein a sterile filter set (1) is provided in the first cleanroom (17.1), wherein at least one fluid container (19), at least one drain container (21) and a filter test device (23) are provided in the second cleanroom (17.2), wherein b) at least one first hose (5.1) of the plurality of hoses (5) is or becomes fluidically connected to the sterile filter set (1) with at least one first end, wherein c) the at least one first hose (5.1) of the plurality of hoses (5) is or becomes fluidically connected to the at least one fluid container (19) with at least one second end, wherein d) at least one second hose (5.2) of the plurality of hoses (5) is or becomes fluidically connected to the sterile filter set (1) with at least one first end, wherein the at least one second hose (5.2) of the plurality of hoses (5) opens into the at least one drain container (21) with at least one second end, wherein e) the filter set (1) is rinsed by passing a rinsing fluid from the at least one fluid container (19) through the filter set (1) into the at least one drain container (21), wherein f) after rinsing the filter set (1) the second end of the at least one first hose (5.1) is separated from the fluid container (19) and connected to the filter test device (23) in a flow-related manner, wherein g) a filter test is carried out using the filter test device (23).

This invention discloses a biological cleanroom assembly mechanism and its usage method, belonging to the field of biological cleanroom assembly technology. It includes an operating table with a sliding movable platform, clamping mechanisms sliding on both sides of the operating table, and a rotatable cleaning mechanism on the operating table. A clamping plate is slidably mounted on the operating table. The cleaning mechanism includes a rotating long plate with several scrapers and roller brushes rotatably mounted on it. A liquid storage tank slides below the scrapers and roller brushes on the rotating long plate. This invention, by providing movable clamping plates with adjustable spacing, can clamp the cleaning box of the biological cleanroom, facilitating its assembly and cleaning. Simultaneously, the clamping plates can also clamp the mounting side plates, facilitating their assembly. After assembly, the clamping plates can act as push plates, pushing the assembled device out of the designated area. The clamping plates have different functions in different usage scenarios.

A wall panel (10) for a wall system, in particular a cleanroom wall system (1), is disclosed, wherein the wall panel (10) comprises a central surface section (12) bounded by a plurality of edges (14), wherein a V-shaped collar (20) is arranged on at least one of the edges (14), the collar having a first collar section (22) and a second collar section (24), wherein the first collar section (22) adjoins the surface section (12) such that the surface section (12) and the first collar section (22) form an angle of less than 90 degrees, wherein the second collar section (24) is bent outwards relative to the first collar section (22), and wherein a seal (30) for sealing the wall panel (10) against a counterpart (41, 42) of the wall system is provided on an outer surface (23, 29) of the collar (20) facing away from the surface section (12). (1) is ordered,a cleanroom wall system (1) comprising such a wall panel (10) and a mullion-beam construction (40) to which the wall panel (10) is connected, wherein the wall panel (10) is sealed against components (41, 42) of the mullion-beam construction (40), and the use of such a wall panel (10) in a cleanroom, industrial or office wall system (1).

The invention is suitable for the technical field of pollution source analysis, and particularly relates to a clean space AMC pollution source analysis method and system.The method comprises the steps that the area range of a clean space is delimited, source equipment generating AMC in the area range is selected, a mobile monitoring device deployed in the area range in advance is used for collecting AMC data at the source equipment, and the AMC data is stored in the mobile monitoring device; configuring an emission fingerprint of each source device based on a historical value of the AMC data; reading a real-time value in the AMC data, calculating the similarity between the real-time value and each emission fingerprint by using a cosine similarity calculation formula, dividing the similarity into a plurality of intervals, integrating the intervals and the movement speeds, and generating a comparison table, according to the AMC pollution source analysis method, background interference can be removed by collecting background noise, so that a monitoring value is closer to real emission, the AMC pollution source analysis accuracy is improved, and reliable data support and decision basis are provided for AMC pollution treatment in a regional range.

This invention discloses a misting safety protection device, belonging to the field of cleanroom technology, comprising: a housing with a personnel entrance and a personnel exit; a first sealing door installed at the personnel entrance and a second sealing door installed at the personnel exit; a liquid storage tank and a pump both installed on the housing, with the pump's inlet connected to the inside of the liquid storage tank; multiple atomizing nozzles all installed on the housing, with the spray ends of the atomizing nozzles located inside the housing, and all atomizing nozzles connected to the pump's outlet; a drain outlet at the bottom of the housing connected to external wastewater treatment equipment; filter element one and filter element two both installed on the housing, with an air inlet and an air outlet on the housing; the inlet of filter element one connected to the atmosphere outside the housing, and the outlet of filter element one connected to the air inlet; the inlet of filter element two connected to the air outlet, and the outlet of filter element two connected to the air inlet of a fan; the air outlet of the fan connected to the atmosphere outside the housing. This application can reliably clean and purify personnel entering its interior.

The invention discloses an intelligent behavior real-time identification and alarm system for a clean room, and relates to the field of computer systems, and the system comprises a sensing module which is used for synchronously sensing human body motion correlation signals and environment correlation parameters in the clean room in real time; the calibration module is used for carrying out screening, interference signal elimination and feature dimension calibration on the signals and parameters acquired by the sensing module so as to construct a standardized to-be-recognized action feature data set; according to the method, related action signals and environment parameters of the human body are synchronously captured in real time, interference information is effectively eliminated, feature dimensions are calibrated, the data standardization level is improved, and the accuracy of the human body action is improved by combining accurate analysis of time sequence features and dynamic environment features and combining the action deviation degree, the environment fluctuation coefficient and time length correction. And performing accurate association mapping of the abnormal behavior and the environmental damage risk.

This invention discloses an intelligent constant temperature and pressure control system for a cleanroom, comprising: a data acquisition module for deploying sensors to collect data and transmit it to a control unit; a data processing module for calibrating, filtering, and synchronizing data, and inputting it into an MLP network to extract features; a coupling prediction module for establishing a prediction model, calculating deviations, and generating a control error vector; a process control module for executing control strategies based on the error vector and determining equipment operating parameters; an execution control module for transmitting adjustment commands and driving synchronous adjustment of the equipment; and a closed-loop feedback module for collecting adjusted data and feeding it back to the control unit to achieve closed-loop regulation. This invention, through an intelligent control system, adjusts the temperature, pressure, and airflow of the cleanroom in real time, improving environmental control accuracy, energy efficiency, and stability, and ensuring the efficient and reliable operation of the experimental environment.

This utility model relates to the field of cleanroom panel technology and discloses a splicable cleanroom panel. It achieves elastic self-locking during splicing by setting up slots, side grooves, locking slots, elastic locking tongues, and spring pieces. When the convex and concave grooves are molded together, the convex head first inserts into the concave shell, and the elastic locking tongue forms a reaction mold-closing with the convex head, causing the elastic locking tongue to also insert into the slot. The elastic locking tongue moves linearly laterally when entering the slot. When the elastic locking tongue touches the wedge-shaped inner wall formed between the side grooves, it is separated by the wedge-shaped inner wall and deforms, sliding into the side groove. As the elastic locking tongue moves into the side groove, the spring piece is pressed and squeezed by the inner wall of the side groove. When the elastic locking tongue continues to penetrate deeper into the side groove, causing the spring piece to reach the locking slot position, the spring piece is released from the squeezing restriction of the side groove and releases its elastic force, causing the spring piece to lock into the locking slot, thus achieving the effect of elastic self-locking.

The utility model provides an explosion-proof type dust remover with obliquely inserted filter cartridges. The explosion-proof type dust remover comprises an upper box body, an ash hopper, a support frame and the filter cartridges, an air inlet and an air outlet are formed in the upper box body, a rear pattern plate is arranged in the upper box body, and a cavity of the upper box body is divided into a dust chamber and a clean chamber by the rear pattern plate; the filter cartridge is obliquely mounted in the dust chamber, and one end, facing the rear pattern plate, of the filter cartridge is mounted on the rear pattern plate; the air inlet is communicated with the dust chamber; the air outlet is communicated with the clean room; a filter cartridge protection plate is further arranged in the upper box body, the filter cartridge protection plate is obliquely arranged upwards from the inner side wall of the upper box body below the air inlet, the upper end of the filter cartridge protection plate is connected with the inner top of the upper box body, and a notch is formed between the bottom end of the filter cartridge protection plate and the inner side wall of the upper box body. According to the utility model, the dust accumulation surface is reduced, the risk of dust accumulation is reduced, the safety and the reliability are improved, the impact force on the filter cartridge is reduced, the service life of the filter cartridge is prolonged, and the filter cartridge is suitable for being used in an environment containing flammable and explosive dust.

The clean workshop comprises a workshop body, the smoke blocking device is located in the workshop body, the smoke blocking device comprises a suspended ceiling structure and a smoke blocking structure, the suspended ceiling structure is used for dividing the workshop body into a first-layer space and a second-layer space which are adjacent to each other, the suspended ceiling structure comprises a groove, and the smoke blocking structure is located in the groove. And the notch of the groove faces the first-layer space. The smoke blocking structure is arranged in the groove, and part of the smoke blocking structure is used for moving towards or away from the bottom of the first-layer space. By the adoption of the smoke blocking device for the clean workshop, when a fire disaster does not occur, most of the smoke blocking structure can be located in the groove so as to be used for reducing the space, occupied by the smoke blocking structure, outside the groove. Therefore, the overall height of the clean workshop is effectively reduced and the construction cost of the clean workshop is reduced while the requirement for the process height of the first-layer space is met.

The invention provides a control system and method for the working condition of a clean room, and relates to the technical field of data analysis. The method comprises the following steps: firstly, constructing a target adjacent matrix; secondly, performing semantic mining on the target environment data based on the target adjacency matrix to form a target environment semantic vector; performing semantic mining on the current environment data based on the target adjacency matrix to form a current environment semantic vector; further, semantic mining is carried out on the historical environment data based on the target adjacency matrix to form a historical environment semantic vector; further, fusing the historical environment semantic vector into the current environment semantic vector to obtain an enhanced environment semantic vector; and finally, determining target working condition data based on the target environment semantic vector, the enhanced environment semantic vector and the semantic vector corresponding to the current working condition data of each environment control device. Based on the method, the problem that in the prior art, the reliability of working condition control of the clean room is relatively low can be solved.

This utility model discloses a pneumatically controlled clean CNC cutting and moving operating table for woodworking cable trays, including a base box with a bottom drive chain installed on the front side of the base box. This pneumatically controlled clean CNC cutting and moving operating table for woodworking cable trays can quickly fix and release the boards using negative pressure. After the board is placed on the processing table, the horizontally installed pipe is pressurized by controlling the air compressor. High-pressure gas is blown outwards along the bottom of the board through the adsorption plate, using the impact of the airflow to clean debris from the bottom of the board and the surface of the processing table. Simultaneously, a negative pressure fan draws air outwards from the collection box, causing debris to be sucked into the collection box through the dust suction notch for storage, preventing debris from affecting the adsorption and fixing effect of the board and effectively improving the processing accuracy of the board.

A device (1) for visualizing gas flows (24) in a space (2) comprising a probe tube (3) which is configured to extend into the space (2), wherein the probe tube (3) has at least one outlet opening (4) through which a metered addition of a fluid to visualize the gas flows (24) into the space is possible, wherein a supply channel (5) for supplying the at least one outlet opening (4) with fluid is arranged in the probe tube (3), wherein the probe tube (3) has a flattened cross-sectional profile (6) with a leading edge (7) and a trailing edge (8), and wherein the outlet opening (4) is arranged on the probe tube (3) in the region of the trailing edge (8), wherein the probe tube (3) further has at least one suction opening (25) through which a boundary layer (22) of a gas flow (24) around the probe tube (3) can be suctioned in order to to reduce turbulence in the gas flow (24).

This application relates to a pressure testing system and method for pipelines with nozzles in large-space cleanrooms, belonging to the category of nozzle pressure testing devices. The system includes a spray pipe, a pressure supply unit connected to the spray pipe, a nozzle connected to a nozzle riser, and a valve seat. The valve seat is located inside the nozzle riser and is threadedly connected to it. A first pressure sensor is installed on the valve seat to detect the pressure inside the nozzle. A water passage hole is provided on the valve seat, communicating with the nozzle. A pressure ring is slidably disposed within the water passage hole along the axial direction of the nozzle riser. A first elastic element connects the pressure ring and the valve seat, providing a force to move the pressure ring away from the nozzle. The pressure ring has an opening in the middle, and an opening / closing unit is provided at the opening to open or close it. This application offers the advantages of high monitoring accuracy and convenient operation.

This invention relates to the field of solar cell manufacturing, and provides a cleanroom frame, a cleanroom, and a production line. The cleanroom frame includes: a frame structure; a first support base and a second support base, both disposed inside the frame structure and respectively connected to both sides of the frame structure, with a gap between the first and second support bases; and buffer seats on both the upper and lower sides of the first support base; a support assembly, movably connected to the first of the first and second support bases and capable of switching between a retracted state and a working state. In the retracted state, the support assembly moves to the top of the first of the first and second support bases; in the working state, the support assembly moves and is positioned between the second and first support bases. The support assembly is integrated into the frame structure and can switch between working and retracted states without the need for handling, thus simplifying operation. Furthermore, the support assembly does not occupy space within the factory.