41results about How to "Improve operating conditions" patented technology

The invention discloses a method for producing marine fuel oil. The method comprises the following steps: a residual oil raw material and hydrogen sequentially enter a first hydrotreating reactor to an (N-1)-th hydrotreating reactor for reaction, an obtained product, solid-removed oil slurry and optional catalytic diesel oil enter an Nth hydrotreating reactor to be in contact with a hydrogenation catalyst for reaction, and hydrogenated diesel oil and hydrogenated heavy oil are obtained, wherein a portion of the hydrogenated diesel oil is used as a first hydrotreating reactor feed; one part of the hydrogenated heavy oil enters a catalytic cracking unit for reaction to obtain catalytic diesel oil and catalytic slurry oil; and blending the obtained hydrogenated heavy oil with optional solid-removed oil slurry, optional catalytic diesel oil and optional hydrogenated diesel oil to prepare the marine fuel oil. According to the method disclosed by the invention, high-quality ship fuel which is low in cost and can meet indexes can be produced, and the problems that the overall utilization efficiency of a catalyst is low and the operation period of a device is restricted due to the fact that solid-removed oil slurry, catalytic diesel oil and the like are conventionally mixed at the inlet of the first reactor can be solved.

The utility model relates to trace liquid supply equipment for printing and dyeing and relates to the technical field of liquid supply equipment, in order to solve the problems that a traditional manual liquid supply mode is low in efficiency and prone to errors, the trace liquid supply equipment comprises a supporting frame and an integrated box body, at least two sets of metering pumps are arranged on the supporting frame, and the integrated box body is arranged below the supporting frame; the interior of the integrated box body is divided into a plurality of independent cavities, the independent cavities are used for containing different agents respectively, the multiple sets of metering pumps correspond to the independent cavities respectively, the input ends of the metering pumps communicate with the interiors of the corresponding independent cavities, and metering junction stations are arranged at the output ends of the metering pumps. The outlet ends of the metering junction stations are jointly provided with a main output header pipe, and the integrated box body is provided with a backwashing mechanism used for cleaning the main output header pipe. The device has the effects that integrated medicament supply is achieved, the production efficiency is greatly improved, and the accuracy and stability of the medicament adding amount are ensured.

The invention discloses a control method, device and equipment for a gas device and a medium, the method comprises the steps that a heating signal is responded, a smoke exhaust fan is controlled to operate at a high gear within first preset time, the gears of the smoke exhaust fan comprise the low gear and the high gear, and the types of the heating signal comprise the low-gear heating signal and the high-gear heating signal; after the first preset time is up, the smoke exhaust fan is controlled to operate at a low gear, and meanwhile the ignition needle is controlled to start preheating; after the ignition needle reaches the preset temperature, the gas valve is controlled to operate at a low gear; and if it is detected that ignition succeeds, gear switching of a gas valve and a smoke exhaust fan is controlled based on the type of the heating signal. According to the technical scheme provided by the embodiment of the invention, the effects of preventing ignition deflagration and enabling fuel gas to be fully combusted can be achieved.

The utility model discloses an on-line adjustable dead steam recovery device which comprises an injection pump, an auxiliary mechanism is arranged on the surface of the injection pump, a filtering mechanism is arranged at the connecting end of the injection pump, through the auxiliary mechanism arranged on the injection pump, rapid installation and accurate positioning are achieved, heat loss is effectively reduced, and the service life of the injection pump is prolonged. The sealing performance and the integrity of the heat preservation cover are enhanced, it is ensured that heat is effectively isolated in the heat preservation cover, the heat loss of a working medium in the transmission process is reduced, the dead steam recovery efficiency is remarkably improved, and it is ensured that equipment can stably and efficiently operate under various working conditions; the jet pump has the advantages that dead steam entering the jet pump can be filtered in a multi-stage manner and is prevented from entering the pump body to cause blockage, the dead steam entering the pump body is pure and free of impurities, and components in the jet pump are effectively protected, so that the reliability of equipment is improved, the service life of the equipment is prolonged, the equipment failure maintenance frequency caused by the impurities is reduced, and the maintenance cost is reduced.

This application discloses an optimization method and system for the coordinated operation of a fan mill and a tower boiler. The method includes: constructing a coordinated control data base covering the entire process of the fan mill and the tower boiler; extracting combustion stability feature vectors based on the data base; constructing a multi-objective optimization function; based on a hierarchical control architecture; and adaptively updating the parameters in the stable combustion evaluation function, dynamic prediction model, and optimization objective function by collecting actual operating data. This application improves the fusion and utilization of multi-source heterogeneous data. By deploying a high-precision intelligent sensor network at key workstations throughout the entire process of the fan mill and the tower boiler, and employing time-series alignment and denoising algorithms, a standardized coordinated control data base covering the "pulverization-combustion-heat exchange" process is constructed. This achieves spatiotemporal unification of mill-side parameters and boiler-side parameters, providing high-fidelity data support for stable combustion assessment and coordinated optimization.

The application discloses a gas parameter adjusting system and method applied to a gas engine, adopts a potentiometer control signal generator to simulate a gas concentration signal, can omit computer connection and one-by-one inputting time, and can greatly compress adjusting time. Only by slightly twisting the potentiometer, the gas concentration parameter adjusting is realized, and the method is very simple and convenient. The adjusting speed is greatly improved, and even multiple units can be simultaneously operated.

This utility model discloses a Z-type hoist backstop device, relating to the field of hoist technology. It aims to solve the problem that the rotation of the ratchet easily causes lubricating oil to be thrown out from the moving part of the pawl mechanism, resulting in lubricating oil waste and pollution of the working environment. A protective shell is provided on the ratchet, with an oil inlet at the top and a notch for the pawl mechanism to insert into. A splash guard is provided on the top surface of the protective shell to prevent lubricating oil from splashing. By providing an oil inlet on the protective shell, lubricating oil can be easily injected into the shell. When the hoist body starts, the shaft drives the ratchet to rotate inside the protective shell, automatically absorbing lubricating oil for lubrication. This eliminates the need for frequent manual intervention, effectively reducing maintenance costs, ensuring good ratchet operation, and extending the ratchet's service life.

The present application relates to the technical field of double-suction pump, in particular to a multi-working-condition overload-free double-suction pump, which comprises a shell assembly, the shell assembly comprises a lower shell, and the top outer wall of the lower shell is fixedly connected with an upper shell, a connecting shaft mechanism is rotatably installed between the lower shell and the upper shell, a impeller assembly is installed at the midpoint of the connecting shaft mechanism, and the impeller assembly is located inside the lower shell and the upper shell, and the connecting shaft mechanism comprises a connecting shaft which is rotatably connected to the lower shell. Three groups of adjustable limit seats are assembled on the connecting shaft, and the limit seats and the adaptive fitting structure of the inner connecting sleeve of the impeller assembly are used to assist the workers to complete the rapid assembly of the impeller on the connecting shaft. Meanwhile, the driving assembly is integrated in the connecting shaft, and the rotating part structure at the end of the connecting shaft can flexibly regulate and control the position of the limit seat, thereby improving the problems of complicated disassembly and assembly process and inconvenient maintenance of the impeller of the existing double-suction pump to a certain extent.

This invention discloses a method for constructing a digital twin for a water electrolysis hydrogen production system, relating to the field of digital twin technology. The method includes: collecting multi-source operational data from the water electrolysis hydrogen production system, extracting all sampling points, constructing proximity relationships between all sampling points to form a proximity connection graph; traversing the proximity connection graph, organizing the shortest path distances between all pairs of sampling points to form a high-dimensional spatial distance matrix, using multi-dimensional scaling transformation to map the sampling points to a low-dimensional space, establishing a correspondence between the low-dimensional coordinate vectors and the high-dimensional original data, forming a digital twin state representation model; based on the state representation model, constructing a probabilistic graphical model containing three types of nodes: components, sensors, and state variables; setting initial node confidence and information transmission rules, iterating until the confidence stabilizes; performing corrections based on node state deviations; and iterating in real-time according to the correction cycle to achieve real-time synchronization between the digital twin and the water electrolysis hydrogen production system.

A transient stability constraint optimal power flow acquisition method considering wind power uncertainty, step 1: taking the power system optimal power flow solution as the initial operation state and setting the expected fault set; step 2: using a typical wind power scene to describe the uncertainty of wind power output; step 3: for a series of expected faults under each typical wind power scene, time domain simulation is carried out, and for the case that the power system is transiently unstable, the process constraint of the transient stability of the power system is converted into an algebraic form of the transient stability constraint through constraint conversion; step 4: the obtained transient stability constraint is added to the power system optimal power flow model, and the equivalent power system transient stability constraint optimal power flow (TSCOPF) model containing wind turbines is constructed, and the model solution is recalculated. The purpose of the application is to expand the power system transient stability constraint optimal power flow model solving method to adapt to the uncertainty of wind power generation and guarantee the transient stability of the power system.

The utility model provides a rotary throwing type anti-turning nest throwing boat, which relates to the technical field of fishing equipment, and comprises a boat body, a bait casting box arranged at the tail part of the boat body and a propeller, the middle part of the boat body is provided with a mounting hole vertically communicated with the inner space of the boat body, a rotary throwing mechanism is arranged in the mounting hole, and the rotary throwing mechanism comprises a throwing hopper and a rotary motor, the throwing hopper is of a circular truncated cone-shaped structure with a wide upper part and a narrow lower part; the wide opening end of the throwing hopper is upwards arranged in the mounting hole; the rotating motor is arranged in the ship body, and the bottom of the throwing hopper is connected with an output shaft of the rotating motor through a transmission assembly. According to the bait casting machine, the mode of combining material rotary throwing and dumping is adopted for casting, the mechanism layout is optimized, the stability and the wind resistance of a ship body are effectively improved, the bait casting amount can be controlled, the contradiction between the function and the stability of an existing product is solved, and the casting effect and the use safety are further optimized.

The invention belongs to the technical field of electric power metallurgy automatic control, and provides an annealing furnace combustion-supporting air supply system automatic control method which comprises the steps that a temperature detection element is arranged on an outlet pipeline of a combustion-supporting fan, the temperature of combustion-supporting air is detected in real time, and the optimal rotation speed of the combustion-supporting fan is automatically matched through piecewise linear control according to different combustion-supporting air temperatures on site. On the basis of the optimal rotating speed of the combustion-supporting fan, feedforward control is matched with a PID feedback control algorithm to control the opening degree of an outlet blow-off valve of the combustion-supporting fan so as to adjust the actual combustion-supporting air pressure value; according to the method, a combustion-supporting air temperature detection loop and a piecewise linear control module are added, and automatic matching and giving of the optimal fan rotating speed are achieved. The opening control mode of the blow-off valve is optimized, feed-forward control and PID control are combined, and the pressure stability is improved.

The invention discloses a power distribution network flexible networking method based on a decision converter model, and the method comprises the steps: obtaining historical operation data of a power distribution network in a normal operation state and a fault operation state, and constructing an expert data set based on the historical operation data; dividing the expert data set into discrete data and continuous data, performing marking processing, and uniformly converting the discrete data and the continuous data into a discrete integer marking sequence to construct a training sample set; constructing a decision converter model comprising an encoder, a converter and a decoder; extracting training samples from the training sample set in batches to train a decision converter model; and performing recursive solution on a flexible networking problem in a real-time operation scene of the power distribution network by using the trained decision converter model, and outputting an approximate optimal decision scheme for flexible networking of the power distribution network. According to the method, the flexible networking decision scheme of the power distribution network can be quickly generated under different operation conditions such as a normal operation state and a fault operation state of the power distribution network, and the operation economy and the operation reliability of the power distribution network are improved.

This utility model relates to the field of heat pump energy-saving technology, specifically to a heat pump steam supply system based on waste heat recovery from an air compressor. The heat pump steam supply system includes an air compressor waste heat recovery system, a flash evaporation pressurization system, and a high-temperature heat pump system. The air compressor waste heat recovery system includes an air compressor, an oil-gas separator, an air cooler, an oil cooler, an oil energy recovery unit, and an energy regulating valve. The flash evaporation pressurization system includes a flash tank and a steam compressor. The high-temperature heat pump system includes a waste water circulation pump, a buffer tank, a water source high-temperature heat pump, and a heating circulation pump. This heat pump steam supply system based on air compressor waste heat recovery can optimize the operating status of the air compressor while ensuring the high-efficiency operation of the high-temperature heat pump system, providing stable high-temperature and high-pressure steam to end users.

This application discloses a 3D printing post-processing workstation, which includes a worktable, a door, a mask, and a recycling device. The recycling device includes a recycling pipe, a first recycling section, a recycling tank, and a suction pump. The first recycling section is fixed to the door and has a first suction port, which opens at the upper end of the door. The suction pump draws the printing material sucked in from the recycling pipe and the first suction port into the recycling tank by creating negative pressure. Compared with existing technologies, this technical solution effectively improves the working environment and operating conditions for operators.

The present application relates to a kind of carbon footprint dynamic allocation method of zinc-containing dust mud based on zinc removal of rotary hearth furnace, including determining steelmaking process carbon accounting boundary and calculating total carbon emission of steelmaking process;Obtain the zinc content of green ball before entering the rotary hearth furnace and the residual zinc content of metallized pellet after rotary hearth furnace roasting, and calculate the zinc removal rate;Determine the carbon accounting boundary of rotary hearth furnace process and calculate the total carbon emission of rotary hearth furnace process;Total carbon emission of rotary hearth furnace process is distributed to zinc oxide and metallized pellet;Calculate the carbon footprint corresponding to zinc oxide, and calculate the billet carbon footprint;According to the utilization rate and metallization rate of metallized pellet returned to steelmaking process, the billet carbon footprint is corrected, and the corrected billet carbon footprint is obtained.The carbon footprint dynamic allocation method of zinc-containing dust mud based on zinc removal of rotary hearth furnace designed by the present application can solve the problem that the carbon footprint results of billet and resource product exist deviation caused by the existing allocation method, affect the accuracy of process evaluation, product certification and enterprise internal emission reduction decision.

The application provides a control system of a converter, a pole control device and a valve control device, which comprises a pole control device layer, the pole control device layer comprises a pole control device, the pole control device comprises a pole control module, which is used for completing control and adjustment tasks of a direct current power transmission system and average voltage balance control of a converter bridge arm, converter bridge arm circulating current control and oscillation damping control; and a valve control function module is integrated in the pole control module and is used for collecting average voltage of the converter bridge arm and collecting device state information and fault / alarm state information. According to the technical scheme of the application, the device floor space is reduced, and the link delay is greatly reduced.

The application discloses a high-load bearing with dustproof and waterproof performance, relates to the technical field of high-load shafts, and comprises a bottom plate, the upper surface of the bottom plate being fixedly connected with a bearing seat, the top of the bearing seat being fixedly provided with a bearing outer shell, the inner side of the bearing outer shell being rotationally provided with a bearing inner shell, and the surface of the bearing seat being provided with a lubricating mechanism; the lubricating mechanism comprises an oil cooling box fixed to the side surface of the bearing seat. The lubricating mechanism is arranged, circulation cooling and lubrication of the bearing during use are realized, when the bearing inner shell rotates, the transmission gear drives the linkage gear and the transmission shaft rod to rotate, the guide vane is further driven to rotate in the circulation guide shell, circulation flow of the lubricating oil is promoted, the lubricating oil enters the oil cooling box through the second liquid guide pipe, is cooled by the semiconductor refrigerating fin, and continuous cooling and lubrication are provided for the bearing, and the stability and durability of the bearing under high-load operation are effectively improved.

The utility model relates to the technical field of axial flow compressors, in particular to a high-pressure balance pipeline system for an axial flow compressor. Comprising a high-pressure balance pipeline, one end of the high-pressure balance pipeline is connected with an exhaust high-pressure side of an axial flow compressor shell through an exhaust flange, the other end of the high-pressure balance pipeline is connected with an air inlet low-pressure side of the axial flow compressor shell through an air inlet flange, and a valve is arranged on the high-pressure balance pipeline; the temperature sensor is arranged on a main thrust surface and an auxiliary thrust surface of a thrust bearing of the axial flow compressor and is used for detecting the temperature of the main thrust surface and the auxiliary thrust surface of the thrust bearing of the axial flow compressor; the controller is connected with the valve and the temperature sensor and used for regulating and controlling the opening degree of the valve according to the detection result of the temperature sensor. According to the high-pressure balance pipeline system for the axial flow compressor, it is guaranteed that the thrust bearing of the axial flow compressor is in a good operation state, the load of the thrust bearing is reduced, and the service life of the thrust bearing is prolonged.

The utility model relates to the technical field of winches, in particular to a winch steel wire rope anti-fracture protection device which comprises a support. The two supports are symmetrically arranged front and back, bearing seats are installed on the outer sides of the two supports, a rotating shaft is connected between the two bearing seats, a steel cable is wound on the outer side of the rotating shaft, a transmission module is installed on the rear surface of the rear support and comprises a motor and a speed reducer, a lead screw is rotationally connected between the two supports, and the motor is connected with the lead screw. A driving motor is installed on the front surface of the front side support, the output end of the driving motor is fixedly connected with the front end of the lead screw, the driving motor is used for driving the lead screw to rotate, the outer side of the lead screw penetrates through threads to be connected with a moving seat, an oil can is installed on the top of the moving seat, and a spray head is arranged on the top of the oil can; by arranging the oil pot and the spray head, lubricating oil can be regularly and uniformly sprayed on the surface of the steel wire rope, the maintenance efficiency is improved, the steel wire rope is prevented from being broken, frequent maintenance is not needed, and the labor intensity is reduced.

The application discloses a built-in multi-pipe supersonic condensation-cyclone-coalescence filter, which comprises a shell, a cyclone pre-separation module, a supersonic nozzle steam condensation module, a multi-stage guide vane type mist cyclone separation module and a coalescence filter core filter module are sequentially arranged in the shell from bottom to top. The filter can not only separate free liquid droplets carried in natural gas, but also deeply remove lubricating oil steam, hydrocarbons and water vapor contained in the natural gas through phase change condensation. The filter has the characteristics of large operation flexibility and high separation efficiency.

This invention discloses a multi-scale phase space correlation dimension analysis method for jet reactors under negative pressure conditions. By introducing phase space reconstruction and attractor analysis methods (i.e., the correlation dimension method), the nonlinear dynamic characteristics of the internal flow field of the jet impacting the reactor are systematically studied. Phase space reconstruction technology reconstructs time-series data into trajectories in a high-dimensional phase space using a delayed embedding method, thereby revealing the system's intrinsic dynamic behavior. Attractors, as geometric structures in phase space, reflect the long-term dynamic characteristics of the system; their shape and distribution can provide important clues for understanding the complexity of the flow field. Through phase space reconstruction and attractor analysis, chaotic behavior, fractal characteristics, and the geometric structure of attractors in the flow field can be identified, thus providing theoretical support for optimizing reactor design and operating conditions.

This invention relates to the field of thin stone processing technology and discloses a high-efficiency cutting device for thin stone processing, including a processing frame. A cutting mechanism is provided on the top of the processing frame, and a fixing mechanism is provided on the top of the cutting mechanism. A recycling frame is fixedly connected to the top inner side of the processing frame, and a drainage frame is fixedly connected to the right side of the recycling frame. A cooling mechanism is provided inside the recycling frame. The cutting mechanism includes a cutting component and a water spraying component. The cutting component is located on the top of the processing frame, and the water spraying component is located on top of the cutting component. In use, when it is necessary to cut thin stone, the part to be cut is first placed on the top of the placement frame. The placement frame is located at the bottom of the cutting disc and does not overlap with the position of the cutting disc. Multiple sets of cutting discs are symmetrically distributed around the rotating shaft, which can realize multi-pass synchronous cutting of stone, greatly reducing the number of cuttings and improving processing efficiency.

The utility model discloses a poultry manure drying machine which is transversely arranged at the air outlet position of a fan at the rear end of a chicken house and comprises a middle frame for laying a conveying belt, side frames located on the two sides of the middle frame and used for supporting the middle frame in an auxiliary mode, and conveying belt driving motors installed on the tops of the side frames. The manure discharging mechanism is installed in the side frame and used for cleaning the conveying belt, and the manure cleaning tail frame is located on the outer side of the side frame and matched with the side frame to be fixedly installed. The chicken house manure treatment device is used for treating chicken house manure, hot air exhausted by a chicken house fan is used for drying the manure, conveying, cleaning and drying of the manure are achieved through cooperation of the middle frame, the side frames, the conveying belt driving motor, the manure discharging mechanism and the manure cleaning tail frame, and the chicken house manure treatment efficiency can be effectively improved.

This invention discloses a dynamic coordinated control method for chiller units based on multi-level load zone division. The method includes: acquiring parameters of the chiller units, water pumps, and cooling towers, and constructing a high-precision mathematical model of equipment performance; dividing the system into continuous, non-overlapping multi-level load zones based on the rated cooling capacity combinations of all chiller units; real-time acquisition of load data and matching it to the corresponding zones, constructing a joint optimization model of the main and auxiliary units with the objective of minimizing the total power of the chiller plant, solving for the optimal unit combination, load allocation, and auxiliary unit operating parameters, and executing the model; performing coordinated optimization of the water pumps and cooling towers, using hysteresis switching and minimum dwell time mechanisms to determine zone switching, and planning the operation sequence and constraining parameter adjustment rates for start-up, shutdown, and sudden load changes. This invention achieves precise matching and dynamic coordination of the main and auxiliary units under all operating conditions, improving the overall energy efficiency of the system, avoiding unsteady-state impacts, and extending equipment lifespan.

The application belongs to the technical field of automobile air suspension and discloses an air supply unit control system and method, which comprises an electric control module, a valve body air path module, an electric drive module and an air drying module. The valve body air path module is provided with a winding heating regeneration air path, which can guide the high-pressure gas in the gas storage tank to flow through the motor winding for heating and then be introduced into the low-pressure cavity for the dryer regeneration. The electric control module realizes the intelligent operation of the system by executing a regeneration control algorithm, a pressure regulation strategy and a temperature-pressure collaborative control method. The regeneration control algorithm automatically triggers the regeneration process according to the humidity state or the time interval; the pressure regulation strategy maintains the stable system pressure according to the sensor signals; and the temperature-pressure collaborative control dynamically optimizes the control parameters according to the winding temperature and the air path pressure. The system effectively integrates the motor waste heat utilization, the dryer regeneration and the accurate pressure regulation and control, and improves the overall energy efficiency and reliability.

The utility model discloses a kind of adapters for sand blasting equipment, belong to sand blasting equipment accessory field, connector is connected with adapter pipe by diameter expansion pipe, connecting pipe is installed in the lateral wall of adapter pipe, the lateral wall of adapter pipe is equipped with the butt joint pipe of opposite connecting pipe, the outer end of butt joint pipe is connected with valve, the outer end of valve is connected with gas hose by tee pipe, input gas by gas hose, increase the internal pressure of adapter pipe, and opposite connecting pipe gas injection, prevent blockage;The other port of tee pipe is connected with elbow pipe, piston pipeline is installed in the upper end of elbow pipe.Diameter expansion pipe design makes adapter pipe internal cavity expand, prevent particle accumulation blockage when sand blasting.Gas injection opposite connecting pipe by gas hose input gas, enhance anti-blocking effect, ensure that sand blasting operation is continuous and stable.Diameter expansion adapter optimizes sand blasting pipeline connection, ensure smooth operation.Flexible control valve adjusts gas and cleaning agent flow rate, can improve operation efficiency, meet different sand blasting needs.

The application provides a double-circulation temperature control device and a control method thereof, wherein the double-circulation temperature control device comprises a refrigeration system, a double-circulation system and an evaporator; a refrigeration pipeline of the refrigeration system is communicated with a heat absorption passage of the evaporator; the double-circulation system comprises an outer circulation pipeline, an inner circulation pipeline, two four-way reversing valves and a heat exchanger; the four-way reversing valves are used for switching the circulation pipelines communicated with the heat release passages of the evaporator and the heat exchanger; and the heat exchanger is used for heat exchange between the outer circulation pipeline and the inner circulation pipeline. The application realizes the switching of the heat exchange mode, reduces the temperature difference in the evaporator under high-temperature working conditions, improves the operation state of the refrigeration system and improves the temperature control precision. The flow of the constant-temperature low-temperature circulation liquid in the heat exchanger is adjusted to control the temperature of the outer circulation liquid, the control of the heat exchange amount is more linear, and the temperature control precision of the outlet temperature is further improved.

The utility model relates to gas pipeline filter technical field, and disclose a kind of anti-blocking gas pipeline filter, including pipe body, the bottom of pipe body is provided with mounting mechanism;The mounting mechanism includes installation shell, installation frame, fixed hole, layered board, filter screen and reinforcing frame, the installation shell is set to the outside of pipe body, the installation frame is fixedly installed in the top of pipe body, the fixed hole is opened in the surface of installation frame, the layered board is fixedly installed in the inner chamber of installation shell, the filter screen is fixedly installed in the end of installation shell.This anti-blocking gas pipeline filter, by setting layered board with arc design, and with the way that three groups of filter screen corresponding inlet and outlet, can significantly improve filtering efficiency and reduce the possibility of blockage, arc design not only increases the flow path length of impurity before entering filter screen, so that particulate matter is more easily captured, and also helps to disperse fluid pressure.