37results about How to "Reduce medium temperature" patented technology

The invention relates to an ultra-temperature high-pressure stop valve comprising a valve body, a valve cover, a valve rod, a valve clack, a valve seat and an operation mechanism, wherein, cooling channels are arranged in the valve rod and the valve clack. The invention is characterized in that at least two groups of sealing surfaces are arranged between the valve clack and the valve seat; the valve clack is provided with an annular notch separating adjacent sealing surfaces, and the two ends of the notch are stuck with the inner wall of a valve seat path to form an insulated tank. The invention has the following beneficial effects: a plurality of groups of sealing surfaces are arranged between the valve clack and the valve seat, and the insulated tank is arranged between two adjacent sealing surfaces; if an outer sealing surface leaks, medium enters the insulated tank but is blocked by the outer sealing surface, so that the heat quantity of medium entering the insulated tank is small; because the insulated tank is near the valve rod and the cooling path of the valve clack, the temperature of the medium entering the insulated tank can be quickly lowered, which effectively ensures that inner sealing surface can be free from being affected by high-temperature and high-pressure medium, and the whole sealing performance of the valve can be improved.

A cooling device of a 1500 DEG C ultrahigh-temperature valve body comprises a medium inlet passage, a valve body middle port position, a valve cover and an end cap. The medium inlet passage and the valve body middle port position are arranged on the valve body and connected with each other, a high-temperature ceramic heat-insulating lining cooling structure is arranged on the medium inlet passage on the valve body, a valve body middle port is provided with a valve body middle port water cooling system, and requirements on safe and reliable running under a working condition of 1500 DEG C and 5.0 MPa are met. Part of heat of a high-temperature medium is absorbed by a midbody water cooling lower portion where pressure drop is formed, and pressure and temperature of the medium are further lowered; due to the structure, direct scouring of a valve seat sealing face by the high-temperature medium can be greatly reduced, service life of the valve is prolonged, and running reliability of the valve is improved.

The invention discloses an intelligent pressure transmitter. The intelligent pressure transmitter comprises a device body and a heat preservation device which is arranged at the lower end of the device body, the heat preservation device is arranged in the device body through bolts, a line hole is formed in the front of the top of the device body and embedded in the device body, side covers are arranged on the left side and the right side of the device body and arranged on the device body through bolts, a support structure is arranged in the middle of the device body, and the support structureis welded to the device body. According to the intelligent pressure transmitter, a fixing ring is arranged on the outer side of the line hole, by means of the fixing ring, a power line interface is isolated from the internal structure, and rainwater or steam can be prevented from entering the device, so that an internal circuit is damaged; in addition, the problem that parts in the device make contact with air for a long time, and oxidation is caused can be prevented, and the problems that for existing design, a power line export end is poor in protective measures, and the internal circuit cannot be well protected are solved.

The present invention discloses an ultrahigh temperature pressure sensor and a manufacturing method thereof. The ultrahigh temperature pressure sensor is composed of a pressure leading member with radiating fins, a pressure guiding member, a radiating ring and a shell, and is characterized in that the pressure guiding member is a cylinder of which the upper central position is equipped with an upper central pressure leading hole, the lower central position is equipped with a lower central pressure leading hole that is not communicated with the upper central pressure leading hole, the middle periphery is equipped with a pressure guiding groove, the lower part is equipped with a lower pressure guiding hole communicated with the lower central pressure leading hole and the pressure guiding groove, and the upper part is equipped with an upper pressure guiding hole communicated with the upper central pressure leading hole and the pressure guiding groove. The two levels radiating structures of the radiating fins and the radiating ring are adopted, so that the temperature of a medium is overall reduced to about 25% of an original temperature, and accordingly, a sputtering thin film pressure core body suitable for the high temperature can measure the pressure of a high temperature medium not more than 600 DEG C very well. Meanwhile, the ultrahigh temperature pressure sensor retains theadvantages of a sputtering thin film pressure sensor of being small in size, high in measurement precision and good in stability, etc., and can be applied to the ultrahigh temperature medium pressuremeasurement field very well.

A water cooling valve clack structure of a 1500 DEG C ultrahigh-temperature valve comprises a valve rod and a valve clack body. The upper end of the valve clack body is connected with a convex lug through a flange, a runner inlet end in the convex lug is communicated with a concave pit in the valve clack body while a runner outlet end in the same is connected with a recycling end of an externally-connected cooling system, the concave pit is communicated with an inlet end of the externally-connected cooling system through a water cooling nozzle, the convex lug comprises an inner ring portion and an outer ring portion which are hermetically assembled into a whole, grooves are uniformly distributed in the outer circumferential face of the inner ring portion, holes in up-down arrangement are processed in the grooves, and upper-layer holes and lower-layer holes are formed in the whole periphery and all communicated with the inner surface of the inner ring portion. Due to the structure, direct scouring of a valve seat sealing face by a high-temperature medium is greatly reduced, and service life of the valve is prolonged, and running reliability of the valve is improved; heat transfer and thermodynamic calculation shows that a valve clack can run safely and reliably under a working condition of 1500 DEG C.

The invention discloses a rotor temperature measurement simulated system and method for a low-temperature centrifugal type fluid machine. The system comprises a refrigerator, the centrifugal type fluid machine to be measured, a flowmeter, a flow control valve, a dynamic fluid machine and a heater connected via pipes. The refrigerator serves as a cold source, the dynamic fluid machine provides circulating power for a medium in the system, and a rotor of the centrifugal type fluid machine to be measured is kept static. The system can measure the rotor temperature when the centrifugal type fluidmachine transmits the low-temperature working medium, the complete internal temperature field and an axial heat leak can be obtained, and help is provided for design of a heat insulation structure ofthe whole machine.

The invention is a steam heat exchanger, which comprises a composite header, a first-stage steam inlet header and a secondary steam inlet header are arranged above the composite header, and a transition is passed between the composite header and the secondary steam inlet header It also includes two sets of heat exchange tubes or heat exchange plates, wherein the inlet and outlet ends of the first set of heat exchange tubes or heat exchange plates are respectively connected to the first-stage steam inlet header and the composite header, and the second set of heat exchange tubes or The inlet and outlet ends of the heat exchange plate are respectively connected to the secondary steam inlet header and the composite header. The invention improves the steam flow rate along the flow direction of the condensate in the first-stage heat exchange tube and the heat exchange plate (tube) process, accelerates the discharge speed of the condensate film, greatly reduces the thickness of the condensate film, and makes it possible to generate The turbulent flow greatly improves the heat exchange efficiency in the first group of heat exchange plates (tubes). The invention greatly simplifies the pipeline structure including the header, and reduces the secondary pipeline connection between the heat exchanger groups. Make it more convenient to process and assemble.

The invention discloses a solar photo-thermal utilization system which comprises a solar photo-thermal shell, a controller, a storage battery pack, an inverter, a heat exchange box and a heating box, wherein a base plate is arranged at the bottom in the solar photo-thermal shell, the inner wall of the solar photo-thermal shell is fixedly connected to a photovoltaic cell panel, a heat preservation sleeve is arranged on the side wall of the heat exchange box, and a first heat exchange mechanism used for utilizing solar photo-thermal is arranged in the solar photo-thermal shell. The heat exchange box is arranged, heat on the two faces of the photovoltaic cell panel can be utilized to generate hot water, power generation of the photovoltaic cell panel is matched, then the purpose of photo-thermal integrated utilization is achieved, and the energy utilization rate is increased; and secondly, a spiral second medium output pipe and a spiral first medium output pipe are arranged, the residence time of a medium in the heat exchange box is prolonged, and the heat exchange efficiency of the medium is improved. In addition, a first electric heater and a second electric heater are arranged, so that water flowing out of the water outlet pipe can meet the requirement of people for water temperature.

The invention discloses a self-control type energy-efficient heat tracing system and belongs to the fields of petroleum refining, petrochemical engineering and petroleum storage and transport. According to the heat tracing system, steam serves as a heat tracing medium. A control system is arranged in a steam heat tracing system. The self-control type energy-efficient heat tracing system comprises the steam heat tracing system and a blowing and sweeping air system. The blowing and sweeping air system and the steam heat tracing system are interlocked through a control unit when a petroleum refining and chemical engineering device or a petroleum storage and transport system is operated, so that servo operation of use / cutting of the steam heat tracing system and the operation state / shut-down state of the petroleum refining and chemical engineering device or the petroleum storage and transport system is achieved. An existing continuous inflow steam heat tracing mode is improved into a self-control intermittent feeding type steam heat tracing mode, system operation is good, intelligent control over the steam heat tracing system in the operation state of the petroleum refining and chemical engineering device or the petroleum storage and transport system is achieved, steam is reasonably and intermittently used, it is guaranteed that the temperature of the medium is lower than the temperature of the heat tracing steam, and waste of energy and consumption of water resources are effectively reduced.

A workshop dust filter unit is characterized in that the workshop dust filter unit comprises a cold air heating device, a delivery pipe, a separator and an induced draught fan; an upper part of the separator is connected with a warm-air exhausting pipeline; a lower part of an air-material separator is a discharge hole; one end of the warm-air exhausting pipeline is enclosed, and the other end of the warm-air exhausting pipeline is connected with the induced draught fan; and an exhaust port is connected with the induced draught fan. The separator is an integral structure. The workshop dust filter unit has a simple and compact structure, is small in size and is convenient to operate. With implementation of the overall scheme, system entrance and exit medium temperature is reduced, and energy consumption is saved.

The invention discloses a rotor temperature measurement and simulation system and method of a low-temperature centrifugal fluid machine. The system includes a refrigerator, a centrifugal fluid machine to be tested, a flow meter, a flow regulating valve, a power fluid machine, and a heater, which are connected through pipelines. In the present invention, the refrigerating machine is used as a cold source, the power fluid machine provides circulating power for the medium in the system, and the rotor of the centrifugal fluid machine to be tested remains stationary. The system can realize the rotor temperature measurement of centrifugal fluid machinery when transporting low-temperature working fluid, obtain a complete internal temperature field and axial heat leakage, and help the design of the thermal insulation structure of the whole machine.

A cooling device of a 1500 DEG C ultrahigh-temperature valve body comprises a medium inlet passage, a valve body middle port position, a valve cover and an end cap. The medium inlet passage and the valve body middle port position are arranged on the valve body and connected with each other, a high-temperature ceramic heat-insulating lining cooling structure is arranged on the medium inlet passage on the valve body, a valve body middle port is provided with a valve body middle port water cooling system, and requirements on safe and reliable running under a working condition of 1500 DEG C and 5.0 MPa are met. Part of heat of a high-temperature medium is absorbed by a midbody water cooling lower portion where pressure drop is formed, and pressure and temperature of the medium are further lowered; due to the structure, direct scouring of a valve seat sealing face by the high-temperature medium can be greatly reduced, service life of the valve is prolonged, and running reliability of the valve is improved.

The invention relates to the technical field of heat exchange, in particular to an energy saving heat exchanger comprising a shell 1. One end of the shell 1 is provided with a terminal box 2, a first tube plate 3 and a second tube plate 4 which are perpendicular to the axis of the shell are arranged in the shell 1, a heat exchanging tube 5 is arranged between the first tube plate 3 and the second tube plate 4 and penetrates the same, an electrical heating tube 6 connected with the terminal box 2 is arranged in the heat exchanging tube 5, a shell inlet 7 and a shell outlet 8 are formed in the shell between the first tube plate 3 and the second tube plate 4, a tube inlet 9 is formed in the shell between the second tube plate 4 and the terminal box 8, and a tube outlet 10 is formed in the shell between the first tube plate 3 and the bottom of the shell. The energy saving heat exchanger is applied in the field of heat exchangers, and has the advantages that additional hot fluid medium is omitted, control is facilitated, energy can be saved, and service life is long.

The invention discloses a marine seawater instant freezer used for instantly freezing marine products on a ship. The marine seawater instant freezer is arranged in a cabin or a refrigeratory of a cabin and provided with a freezing tank, a water tank, a refrigeration unit matched with the freezing tank, a conveying system and a hanging basket used for containing marine products. A liquid freezing medium used for freezing marine products is contained in the freezing tank. The hanging basket containing marine products is arranged in the freezing tank, the marine products is placed into the water tank after being cooled through the freezing medium, the surfaces of the marine products are instantly frozen, and therefore instant freezing of marine products is completed. Energy consumption can be greatly reduced, the purpose of instantly freezing marine products on sea better more rapidly is achieved, and the quality and delicious taste of the marine products can be kept.