23 results about "Injection point" patented technology

The embodiment of the invention provides a corner tangential coal-fired boiler SCR denitration system and an ammonia injection grid partition control method thereof, and the method comprises the steps that an ammonia injection grid is divided into a plurality of independently-controlled large areas based on the combustion characteristics and flue gas flow characteristics of a coal-fired boiler, and each large area is internally provided with a plurality of ammonia injection grid injection points; a manual valve and an automatic adjusting valve are arranged in each large area, the ammonia spraying amount of a spraying point of a single ammonia spraying grid is adjusted through the manual valve, and the total ammonia spraying amount of the whole large area is dynamically adjusted through the automatic adjusting valve; and the NOx concentration and the ammonia escape concentration corresponding to each large area are monitored in real time, and the ammonia spraying amount of each large area is dynamically optimized through a control algorithm based on the boiler operation load change, so that the ammonia spraying distribution of each large area is matched with the NOx concentration distribution.

Provided is a proportioner having one or more proportioner inlets to receive a common concentrated proppant fluid comprising a proppant, two or more flow lines fluidly connected to the one or more proportioner inlets, two or more proportioner outlets, each of the two or more proportioner outlets associated with one of the two or more flow lines, one or more fluid inlets, each of the one or more fluid inlets for introducing a proppant-free fluid to the proportioner, and a metering system associated with at least one of the two or more flow lines. Each metering system is positioned upstream of the proportioner outlet of the flow line with which it is associated and is fluidly connected with at least one of the one or more fluid inlets for proportioning one of the proppant-free fluids into the associated flow line at an injection point.

According to the deslagging and drainage device and system for the coal seam downward inclined drill hole, high-pressure gas jet flow and powerful mechanical spiral disturbance are cooperated, the deposition state of drilling cuttings and accumulated water at the bottom of the hole is broken, effective bottom cleaning is achieved, formation of a slag water cushion is avoided, and the risk of drill jamming is remarkably reduced; an optimized gas-liquid injection point (gas is in the middle and the lower part, and liquid is in the upper part) is combined with a spiral flow guide structure of the drilling tool, so that uniform and stable low-density gas-liquid-solid three-phase rotational flow is created. The flow state greatly reduces energy needed for overcoming gravity, and efficient and low-energy-consumption improvement of obliquely downward drilling is achieved. The intelligent gas-liquid collaborative deslagging and drainage system for the obliquely downward long drill hole of the coal seam is simple in structure, reasonable in overall structure, high in deslagging and drainage efficiency and high in adaptability. The system can effectively overcome the influence of gravity, prevent slag water at the bottom of the hole from being accumulated, keep the annulus unblocked, and remarkably improve the construction efficiency and safety of the obliquely downward long drill hole.

This invention belongs to the field of spatial location technology for geological defects, and provides a method and system for spatially locating water-conducting fracture zones in coal mines. The method involves establishing a three-dimensional prior geological model of the target area in the coal mine; setting at least one tracer injection point and multiple receiving points in the target area; injecting fluorescent nano-tracers; acquiring tracer concentration-time response data at each receiving point and extracting characteristic parameters; constructing a three-dimensional forward model based on the three-dimensional prior geological model and the extracted characteristic parameters, which includes a groundwater flow model and a tracer transport model; comparing the measured response with the forward model output, constructing a joint objective function, iteratively inverting the parameters to be estimated, obtaining the optimal parameter combination, and obtaining the three-dimensional spatial location, development height, extension direction, connectivity direction, influence range, and uncertainty results of the water-conducting fracture zone. This invention achieves water inrush source identification, water-conducting fracture zone location, and risk quantification assessment.

This invention discloses a device and method for separating and controlling gas injection points. It mainly consists of a winch system, a sealing system, a power system, and a control system. The gasifying agent is fed into the gasification working face through a continuous tube with a certain degree of flexibility and strength. The first end of the continuous tube is placed inside the gasifier and connected to a nozzle or flamethrower. The second end of the continuous tube passes through the sealing system, exits from the working hole of the gasifier, and connects to the winch system. The second end of the continuous tube is connected to the gasifying agent delivery pipeline. The continuous tube is wound around the winch system. When the gas injection point needs to be retracted, the winch power mechanism drives the continuous tube to move, thereby causing the gas injection point to retract continuously or periodically. During the movement, the sealing system ensures that the outer wall of the continuous tube remains sealed to the wall of the working hole of the gasifier, preventing gas leakage from inside the gasifier.

The application discloses a system for evaluating gas injection pressure water coning effect of bottom water sandstone reservoirs, which comprises a core device, a displacement device and a measuring device. The core device is internally arranged with an experimental core and is provided with multiple injection points along the axial direction of the experimental core. A pressure measuring point and a probe measuring point are arranged on the core section of each injection point. The displacement device is connected with the core device, used for injecting water to the experimental core saturated with formation water and displaced with crude oil to simulate a strong bottom water drive process, and injecting gas to any injection point at different speeds and / or different amounts to simulate a gas injection pressure water coning process. The measuring device is connected with the core device, used for measuring pressure changes of different pressure measuring points and ultrasonic signal changes of different probe measuring points in the strong bottom water drive simulation process and the gas injection pressure water coning simulation process respectively. The gas swept range is determined by comparing the same position and same type of measurement data. The application solves the problem of simulating the gas injection pressure water coning process of the bottom water sandstone reservoirs.

The invention relates to a method and a device for depositing a layer on a substrate in a process chamber of a CVD reactor, comprising a gas inlet device for feeding various process gases into the process chamber, wherein a process gas containing at least a first and a second gas is fed into at least one gas distribution volume, wherein the gas distribution volume is connected by flow to gas outlet openings arranged in a gas outlet surface, through which the process gas flows into the process chamber, wherein the process gas is fed into the gas distribution volume at at least two different injection points with a different mixing ratio of the first gas to the second gas, such that the gas flows exiting the gas outlet openings exhibit differing concentrations of the first and second gases in the radial direction with respect to a center of the gas outlet surface.where the first and second gases have different thermal conductivity properties. By varying the mixing ratio of the first and second gases at the various injection points, predetermined radial surface temperature profiles are set for elements arranged in a heat transfer zone between a heating element and a cooling element.

Liquid-liquid extraction process and column (1) using / comprising feed injection points (2), washing (3) and optionally backwashing (4), two withdrawal points (5, 6), and trays (Pi) defining n zones comprising: at least one extraction zone Zi comprising zones from Z1 to Zx, x ≥ 1, and optionally at least one backwashing zone comprising zones from Zx+1 to Zn, n ≥ x; in which the trays of the same zone have weirs (11) in which are arranged differential pressure elements (13), and when x > 1, the ratio between the pressure loss coefficient of the differential pressure element of a zone Zi and that of a zone Zi+1 is between 0.8 and 8; and optionally when x = 1, the pressure loss coefficient of at least one backwashing zone is greater than that of zone Z1. Figure 4 to be published

The utility model relates to the field of junction boxes, in particular to a junction box assembly structure, which comprises a box body and a box cover, the box cover is mounted at the upper end of the box body in a sliding clearance fit manner, an anti-reverse mounting block is arranged at the outer side end part of the box cover along the sliding direction, and a wingspan part is arranged at the right end of the bottom of the box body. Glue inlet points for box body injection molding are arranged on the wingspan parts, the box body and the box cover are installed in a sliding clearance fit mode, the box cover can slide at the upper end of the box body in the specific direction, the box cover can better adapt to deformation caused by heating of the box cover, the falling risk of the box cover is reduced, the glue inlet points are independently added to the tail of the box body, the fragile glue inlet points of the box body are moved to the outside of the box body, and the glue inlet points are not prone to falling off. The influence on the main structural strength of the box body can be reduced, box body cracking caused by weak glue inlet position is prevented, the overall performance is improved, and the service life of the box body is prolonged.

A method for removing residue deposits from a reaction chamber includes the step of supplying a cleaning gas into the reaction chamber via direct delivery from a remote plasma source (RPS). The cleaning gas forms a plurality of gas flow streamlines within the reaction chamber. Each streamline starts at an injection point for receiving the cleaning gas and ends at a chamber pump port coupled to a fore line for exhausting the cleaning gas. The flow characteristics of the cleaning gas are modified to redirect at least some of the gas flow streamlines to circulate near the inner perimeter of the reaction chamber to remove residue deposits or to enhance the diffusion of cleaning species to surfaces to be cleaned. The inner perimeter is positioned along one or more vertical surfaces of the reaction chamber orthogonal to a horizontal surface containing the injection point.

The present application belongs to the technical field of underground coal gasification, and discloses a method and system for preparing rich-methane coal gas by deep underground coal gasification. After the underground coal gasification enters a normal gasification stage, under the conditions of relatively low temperature and high pressure, waste water containing catalyst is injected into the underground gasification furnace, and by adjusting the gas-water ratio and / or the position of the gas injection point, the volume percentage of methane in the coal gas is kept above 35%. The system for realizing the above method comprises an underground gasification furnace, a double-layer continuous pipe and its injection device, a variable-frequency water injection pump and a UCG control unit; the continuous pipe gas inlet is connected with a gasifying agent storage device, and the continuous pipe water inlet is connected with the variable-frequency water injection pump; the underground gasification furnace is connected with the UCG control unit; and the variable-frequency water injection pump is connected with a catalytic waste water pool. The present application forms a stable and necessary process control method and operation system for maintaining the production of rich-methane coal gas in the gasification coal seam, and the prepared coal gas has high methane content.

The utility model discloses a power distribution cabinet of remote monitoring can, including the cabinet, the front side of cabinet is equipped with the apron, the inside of cabinet is installed with a plurality of mounting brackets from top to bottom in proper order, the front side both ends of mounting bracket all are installed with the element. This power distribution cabinet of remote monitoring can, through the cooperation between cabinet, apron, mounting bracket, element, wiring box, subassembly box and monitoring unit, when the inside installation multiple elements of cabinet use in the way, sensor carries out fire signal detection, sends out the instruction and makes first motor and second motor run, first screw rod and second screw rod rotate, make the front side shower nozzle of cavity block move to the front of the element that breaks out, then solenoid valve energization opens and closes, make the dry powder in fire extinguisher spouts through the shower nozzle, realize only to the fire extinguishing operation of the element that breaks out, make dry powder injection point position precision, need not completely cover the dry powder inside cabinet, to play the role of reducing the subsequent cleaning maintenance operation difficulty.

The invention relates to a multi alternative solids fuel material line injector for introducing material from an unpressurized source to a lean phase pneumatic transport line (1), the injector comprising a rotary airlock valve (2) and a pressure differential regulation system, configured to create and adjust a chosen pressure differential ΔP between an upper part pressure Pa and a lower part pressure Pb of the connecting shaft (5) to set a suction force between the material accumulated in at least one airlock pocket (22) and an injection point (13) when said airlock pocket (22) is aligned with at least part of the injection point (13).

The application relates to the technical field of polymer production, and is a gas-phase reactor terminator multi-point injection device and method.The former comprises a gas-phase reactor and a terminator storage bottle;the gas-phase reactor is fixedly connected with a raw material pipeline at a top feeding end;the gas-phase reactor is fixedly connected with a reflux pipeline between the top and the bottom;the terminator storage bottle is fixedly connected with a terminator main pipe at a discharging end;the first discharging end of the terminator main pipe is fixedly connected with a bottom injection pipeline between the bottom feeding end of the gas-phase reactor; and the second discharging end of the terminator main pipe is fixedly connected with an upper injection pipeline between the upper feeding end of the gas-phase reactor.The application realizes rapid, uniform and accurate injection of the terminator by arranging injection points in multiple key areas, significantly improves termination efficiency and reliability, reduces the amount of the terminator, effectively reduces equipment damage and the rate of defective products, and guarantees long-period safe and stable operation of the device.

The application provides a site pollution treatment agent injection method and system, and belongs to the technical field of pollution remediation. The method comprises the following steps: determining an in-situ injection agent; constructing a three-dimensional site model; based on optimal injection parameters of different soil types, performing injection point layout in the three-dimensional site model to obtain an injection point vector point map; according to a three-dimensional pollution space distribution model, a three-dimensional stratum model, optimal injection parameters of different soil types, the injection point vector point map and an agent injection correlation equation, generating an agent injection scheme driven based on the three-dimensional site model; importing the agent injection scheme into an injection equipment control system and performing agent injection; when a site pollutant remediation result does not reach a preset standard, updating the three-dimensional site model based on a current site, repeatedly performing the above steps until the site pollutant remediation result reaches the preset standard. The agent injection space and the pollution space distribution are consistent, intelligent and accurate control of the agent injection is improved, and the agent consumption is reduced.

This invention discloses a concrete F-type jacking pipe, relating to the technical field of F-type jacking pipe processing equipment. It includes a jacking pipe body with eight semi-circular positioning grooves on its circumferential side. Each pair of symmetrical semi-circular positioning grooves is located at one end of the circumferential side of the jacking pipe body. Multiple insertion slot plates are fixed inside the semi-circular positioning grooves, and each insertion slot plate is fixed to the jacking pipe body with an internal hexagonal bolt. This invention patent, by adding a matching injection cap and an anti-solidification structure at the concrete injection point, facilitates the butt joint injection of concrete during use while preventing the concrete from losing moisture and solidifying during injection, ensuring smooth injection. Furthermore, by internally mounting a variable number of insertion slot plates, it corresponds to the requirements of the formed rubber ring, facilitating integrated filling and forming, avoiding unnecessary manual processing, and greatly improving the efficiency of F-type jacking pipe production.

The invention discloses a gas distribution system and method for multipoint gas inlet of a chemical vapor deposition furnace. The distribution system comprises a liquid-phase precursor supply unit, an evaporation mixing unit and a multi-stage gas distribution unit, firstly, the working pressure difference of a closed-loop stable liquid flow controller is controlled through pressure, and accurate evaporation and mixing of a liquid-phase precursor are achieved; then distributing the mixed gas to different parts of the deposition furnace in proportion by using a secondary distribution module; and finally, the mixed gas is further distributed to a plurality of gas inlet points of the same part through a three-stage distribution module. The system also has a full-automatic safe liquid adding function based on weight monitoring. Accurate, stable and proportional distribution of multiple devices, multiple parts and multiple air inlet points is achieved through one set of integrated system, the uniformity problem of an airflow field of large chemical vapor deposition furnace equipment is solved, the cost and the occupied area are remarkably reduced, and the automation level and the safety level are improved.

This invention provides a method and apparatus for leak detection in a condenser vacuum system. The method includes: injecting tracer gas into the condenser vacuum system; measuring the response time of the tracer gas from the injection point to the detector; calculating the gas flow rate in the condenser vacuum system based on the response time and the pipeline geometric parameters between the injection point and the detector; and determining the leakage state of the condenser vacuum system based on the gas flow rate. In this scheme, by injecting tracer gas into the condenser vacuum system and measuring its response time, calculating the gas flow rate in the condenser vacuum system based on the response time and pipeline geometric parameters, and then determining the leakage state based on the gas flow rate, accurate judgment of condenser vacuum system leaks is achieved during unit operation.

The invention relates to the technical field of water quality traceability, in particular to an in-hole activation control system and method for water quality traceability, and the method comprises the steps: arranging water quality parameter monitoring sensor sets in drill holes where a tracer agent putting point, a tracer agent receiving point and a tracer agent monitoring point are located; collecting water quality parameter data in the drill holes corresponding to the tracer receiving point and the tracer monitoring point through each water quality parameter monitoring sensor set to form a corresponding initial water quality parameter data set; performing real-time acquisition on water quality parameter data after the tracer agent is put in the drill holes where the tracer agent receiving point and the tracer agent monitoring point are located, and forming a corresponding real-time activated water quality parameter data set; according to the real-time activation water quality parameter data set and the initial water quality parameter data set, a tracer migration path between the tracer putting point and the tracer receiving point is determined, and the tracer migration path serves as a pollution channel between the tracer putting point and the tracer receiving point.

The utility model discloses an efficient SDS (Sodium Dodecyl Sulfate) desulfurization system, which belongs to the technical field of desulfurization process and comprises a distributor component and a special spray gun component, the special spray gun component is mounted at one end of the distributor component and communicated with the distributor component, and an adjustable support component is mounted at the other end outside the distributor component and communicated with the distributor component. The distributor assembly is installed at an external use site through the adjustable supporting assembly, the special spray gun assemblies are installed on an external flue and communicated with the external flue, the distributor assembly is placed in front of the special spray gun assemblies, and the special spray gun assemblies are connected through hoses, so that a desulfurizing agent is evenly distributed to the special spray gun assemblies. The spraying points are arranged on the vertical rising section flue, the spraying points are designed to be distributed in multiple paths, and each spraying point is provided with a special spraying gun assembly, so that the desulfurizer is distributed as uniformly as possible after being sprayed into the flue and is fully mixed with flue gas, and the utilization rate of the desulfurizer is improved.

A fluid handling system, method, and computer-readable storage medium are presented for controlling the flow and injection pressure of fluid injected into a subterranean void at an offshore injection site for long term storage. A subsea template receives fluid from a fluid storage arranged on a seabed in connection with at least two well heads for at least two drill holes to the void. For each drill hole, a first pressure gauge at the bottom opening of the drill hole measures a bottom pressure, PB. The template comprises a utility system causing received fluid to be injected into the void and includes a valve system with a choke valve for each drill hole to control the injection of fluid into the void in response to control commands (Ccmd) based on a pre-set desired flow rate for each drill hole and a pre-set lowest allowable flow rate from the fluid storage.