16 results about "Steam line" patented technology

The utility model provides an energy -conserving rectifying device, including raw material conveying pipeline, raw material conveying pipeline connects high pressure tower, low pressure tower respectively, high pressure tower connects high pressure tower reboiler, high pressure tower reboiler connects steam generator, steam generator still connects low pressure tower reboiler, low pressure tower reboiler connects low pressure tower, the top of high pressure tower is connected high pressure tower overhead cooler through cooling pipeline, high pressure tower overhead cooler connects tower top re -cooler, tower top re -cooler connects high pressure tower tank pump, high pressure tower tank pump connects tower top product output pipeline. High pressure tower overhead cooler is connected low pressure tower through steam pipeline. The utility model sets up low pressure tower, uses in combination with high pressure tower, carries out the secondary full use to the heat of rectification product of high pressure tower tower top output, saves the energy.

The utility model discloses a kind of anti-drop devices for steam pipeline, steam pipeline bottom is fixed with pipe support, pipe support is configured with the pipe support beam that it supports, anti-drop device includes: supporting component, it is arranged along the length reverse extension of steam pipeline, for supporting pipe support, the length of supporting component in the length direction of steam pipeline is greater than the length of pipe support;Limiting portion is formed on supporting component, for limiting pipe support;Fixed component is fixedly connected on supporting component, and the clamping portion with bottom opening is formed on fixed component, and clamping portion is used for clamping pipe support beam;Locking assembly is assembled on fixed component, is blocked in opening, for connecting fixed component and pipe support beam.The anti-drop device for steam pipeline proposed in the utility model can effectively support pipe support, and pipe support is hardly dropped when steam pipeline moves in small distance, greatly reduces the probability of pipe support due to moving drop, improves the security of use.

This application discloses a steam regulating valve assembly for a polycrystalline silicon differential pressure coupled distillation column. The steam regulating valve assembly is installed on the steam pipeline to regulate the amount of steam entering the reboiler. The steam regulating valve assembly includes: a main regulating valve unit, which is installed on the steam pipeline and has a first through-hole, and is used to regulate the flow rate of the main steam during the stable operation phase of the distillation column; and an auxiliary regulating valve unit, which is also installed on the steam pipeline and has a second through-hole, which is smaller than the first through-hole, and is used to perform micro-flow control of steam during the start-up phase of the distillation column.

A carbon dioxide recovery system includes: a regeneration tower that releases carbon dioxide from an absorption liquid that has absorbed the carbon dioxide; a reboiler that heats the absorption liquid by exchanging heat between the absorption liquid in the regeneration tower and reboiler steam; a reclaimer that heats the absorption liquid by exchanging heat between the absorption liquid supplied from the regeneration tower and reclaimer steam to generate absorption liquid steam, which is steam of the absorption liquid; an absorption liquid steam line for supplying the absorption liquid steam generated by the reclaimer to the regeneration tower; and a first compressor that compresses the reclaimer steam before supplying the reclaimer steam to the reclaimer. The first compressor compresses steam supplied from a steam supply source to the carbon dioxide recovery system.

The application discloses a kind of sodium-cooled fast reactor main steam pipeline system debugging method, comprising the following steps: according to sodium-cooled fast reactor main steam pipeline system function, sodium-cooled fast reactor main steam pipeline system needs to be screened out and is debugged equipment;According to the equipment needing to be debugged of sodium-cooled fast reactor main steam pipeline system, the performance of equipment is analyzed, determines the debugging test item and content that each equipment should execute;Determine the debugging technical requirement and order of the debugging test item that each equipment should execute.The sodium-cooled fast reactor main steam pipeline system debugging method, by analyzing the design characteristics of sodium-cooled fast reactor main steam pipeline system and the actual demand of system debugging work execution, the debugging technical requirement of this system is described in detail, the adoption of this debugging technical requirement will be able to fully, efficiently verify the function of sodium-cooled fast reactor main steam pipeline system, to ensure that sodium-cooled fast reactor main steam pipeline system fully play system function when sodium water accident occurs provides strong guarantee.

This utility model relates to the field of steam regulation and distribution technology, and is a high-efficiency steam regulation and distribution device for an ammonia synthesis system. It includes a first boiler, a second boiler, a third boiler, a desuperheater and pressure reducer, an air separation turbine, an ammonia synthesis turbine, and a medium-pressure user steam network. A first high-pressure steam pipeline connects the third boiler to the air separation turbine; a second high-pressure steam pipeline connects the second boiler to the ammonia synthesis turbine; a first medium-pressure steam pipeline connects the third boiler to the medium-pressure user steam network; a second medium-pressure steam pipeline connects the second high-pressure steam pipeline to the first medium-pressure steam pipeline; and a desuperheater and pressure reducer are connected to the second medium-pressure steam pipeline. This utility model has a reasonable and compact structure, is easy to use, shortens the time and resource consumption for chemical cleaning and steam purging of power steam pipelines, reduces steam transport heat energy loss, and also ensures stable operation of steam-using equipment in the ammonia synthesis system.

This utility model discloses a steam pipeline for a steam humidification mechanism. A drying mechanism is installed on the left and right frames. The drying mechanism includes a steam inlet, an inner steam channel, and a drain outlet connected in sequence. The steam inlet and drain outlet are connected to a steam distributor for water circulation. The inner steam channel includes two sub-channels, forming a symmetrical S-shaped path on both sides for the horizontal, meandering transport of steam to heat the inner surface. By dividing the inner steam channel into left and right sub-channels, this utility model increases the circulation speed of the two steam paths, thus avoiding the problem of reduced heating and drying capacity due to temperature drops in the later sections of a longer channel. Halving the length of the channel in the width direction also reduces the temperature difference between the left and right sides, which helps maintain consistent evaporation performance throughout the width direction. Dividing the channel into two reduces the initial setup cost and the subsequent cleaning and maintenance costs and difficulties.

The application discloses a nuclear power plant steam extraction heat supply system with a steam heat accumulator, comprising a power generation module, a steam extraction module, a heat supply module and a heat accumulator module: a steam generator is connected with a high-pressure cylinder, a low-pressure cylinder and a condenser in sequence; the low-pressure cylinder is connected with a generator; a steam extraction inlet is connected with a steam pipeline between the high-pressure cylinder and the low-pressure cylinder; a first steam extraction outlet and a second steam extraction outlet are connected with a first steam inlet, the second steam extraction outlet is connected with a second steam inlet, a steam outlet of the low-pressure cylinder and the first steam extraction outlet are connected with a steam inlet of the condenser, a condensate outlet of the condenser is connected with an inlet of a feed water pump through a water extraction port, and an outlet of the feed water pump is connected with a second water inlet. The application uses condenser warm drainage as the water inlet of the steam heat accumulator, can enhance the flexibility of the nuclear power plant heat supply, improve the upper limit of the heat supply capacity, improve the heat utilization efficiency of the reactor and prolong the service life of the steam heat accumulator under the premise of no adjustment of the steam extraction amount and stable power operation of the reactor.

A heat utilization system includes: a heat recovery device configured to generate first steam and second steam with a lower pressure than the first steam from water by heat exchange between a heating fluid and the water; a discharge source which discharges the heating fluid; a first steam turbine driven by the first steam; a pressure reduction part configured to reduce pressure of exhaust steam which is steam that has driven the first steam turbine; a heat demand facility which utilizes heat of at least one of at least part of the exhaust steam or the second steam; an exhaust steam line connecting the first steam turbine and the heat demand facility; and a second steam line through which the second steam flows out of the heat recovery device. The second steam line is connected to the exhaust steam line at a position downstream of the pressure reduction part.

A computational method for investigating the gas compression and temperature rise phenomenon in the main steam pipe of a nuclear reactor is proposed. This method is applicable to simulating the abnormal temperature and pressure rise in the secondary steam pipe of the steam generator caused by the loss of secondary feedwater and the closure of the main steam isolation valve in a full-pressure small reactor. The method mainly includes the following parts: 1. Simplifying the geometry of the secondary steam main pipe and constructing a 3D model; 2. Using SpaceClaim software to perform 3D modeling of the simplified steam main pipe structure; 3. Using the mesh function of Fluent software to generate a computational mesh for the model; 4. Establishing suitable compressible flow and turbulence models; 5. Defining boundary conditions and initial conditions; 6. Setting the solver and solution method, and setting the time and spatial discretization formats; 7. Adjusting the sub-relaxation factor and setting the time step that conforms to the computational time scale; 8. Setting the convergence criterion and monitoring physical quantities such as cross-sectional temperature and inlet pressure until the pressurization process in the 3D model ends and the container reaches a steady state.

A steam cooking system includes a steam chamber, a door, a steam generator, a steam line, a steam valve, a vent / drain valve, and a controller. The steam chamber has an interior. The door is positioned on the steam chamber, and the door has an open position and a closed position. The steam line connects the steam generator to the interior of the steam chamber. The steam valve is positioned along the steam line. The vent / drain valve is mounted on the steam chamber in communication with the interior of the steam chamber. The controller is connected to and configured to operate the steam valve and the vent / drain valve. The controller operates the vent / drain valve to open when the door is in the open position, and operates the vent / drain valve to open periodically when the door is in the closed position.

This invention discloses a high-efficiency steam pipeline purging method based on rapid temperature change. It integrates with conventional industrial steam supply and factory air cooling supply units, forming a purging system with a carbon steel main purging pipeline, valve assembly, and a DCS control unit with a parameter database. No structural modifications are made to the conventional units. The method includes: pre-controlling the pipeline by welding, pickling and passivation, and full-line sealing after chemical cleaning of the main purging pipeline; alternately executing 8 hours of high-flow-rate steam purging and forced cooling to below 50°C using factory air via the DCS control unit, utilizing the alternating thermal stress generated by the rapid temperature change to peel off the deposits, with the thermal stress controlled within the allowable stress of the pipe material, and the total alternating cycle time ≤3 days; finally, a target test is performed at the end of the pipeline, and purging is completed if it passes. This invention controls impurities at the source, improves the first-pass yield of purging and target testing, reduces steam consumption, shortens the construction period, has low modification costs, high safety, and is easy to promote in the industry.

The utility model discloses an activation furnace superheated steam temperature control system, including high temperature steam main pipeline, high temperature steam main pipeline connects direct discharge pipe, buffer tank, throttle valve and high temperature steam total output pipeline in proper order, high temperature steam main pipeline still has the heat exchanger through the three -way valve intercommunication, and the steam output end of heat exchanger is connected direct discharge pipe through high temperature steam pipeline, and high temperature steam main pipeline still has the branch pipe, and the medium input end of heat exchanger is communicated through booster pump with branch pipe, and the cut -off output of heat exchanger is provided with circulating line, and installs pressure -relief valve on circulating line. The activation furnace superheated steam temperature control system, through the steam shunt mode, a part of steam is used as heat medium after compression and temperature rise, and another part of steam is used as fluid and is heated by heat exchange, which is low in cost and different from electric heating and other modes, achieves the purpose of pipeline steam temperature control through different modes, solves the problem of heat loss caused by long steam pipeline conveying distance and inability to meet production demand.

This invention relates to the field of petrochemicals and discloses a safe preheating system for the oil removal of a pressure reducing pump. The system includes a pressure reducing tower, a pressure reducing pump, a steam purging line, and a dedicated preheating line. A first valve is installed on the dedicated preheating line. A fifth valve, an eighth valve, and a ninth valve are respectively installed on the pressure reducing pump inlet line, sealing line, and vent line. A one-way valve, a seventh valve connected in parallel with the one-way valve, and a sixth valve located at the tail end are installed on the pressure reducing pump outlet line. The pressure reducing pump inlet line is connected to the outlet of the pressure reducing tower. The steam purging line is connected to the outlet line of the fifth valve. A fourth valve, a third valve, and a second valve are installed on the steam line. The two ends of the dedicated preheating line are respectively connected to the outlet line of the fourth valve and the pressure reducing tower. This safe preheating system for the pressure reducing pump reduces the steam purging time and steam consumption during the oil removal preheating process. The system allows for quantitative control of each stage of the process by monitoring changes in the pressure at the bottom of the pressure reducing tower, ensuring safe and controllable maintenance.