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A steam-water mixing heater

A steam-water mixing and heater technology, applied in heat exchanger types, lighting and heating equipment, direct contact heat exchangers, etc., can solve damage to pipelines and equipment, uneven stress on heaters, uneven stress, etc. problems, to achieve the effect of reducing vibration and water hammer

Active Publication Date: 2017-11-03
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method of adding fillers to buffer can improve the uniformity of steam to a certain extent, since the steam nozzle is directly aimed at the inner nozzle, it is unavoidable that the stress on the upper and lower parts is uneven. In addition, the filler is subjected to steam for a long time The eroded, thinned, broken and shortened packing will enter the water with the steam holes, affecting the heating water quality and even damaging the downstream pipelines and equipment
CN201210126973.0 discloses a "steam-water mixing heater", which deviates the central axis of the steam inlet from the central axis of the Rafal nozzle by a certain distance, which reduces the vibration of the equipment to a certain extent. However, this inlet method is still very important. Symmetrical, so that the force on the heater is still uneven, and eventually it is difficult to avoid vibration

Method used

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  • A steam-water mixing heater
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The temperature is 230°C, the pressure is 2.8MPa, and the steam with a flow rate of 20t / h enters the steam chamber 3 tangentially through at least one pair of steam inlet pipes 1 uniformly arranged on the steam sleeve 2 and tangent to it. In this implementation In the example, there are two pairs of steam inlet pipes 1; then, the steam evenly passes through the straight pipe steam holes 11 arranged on the straight pipe 7 and the expander steam holes 12 arranged on the expander pipe 8, Enter the straight pipe 7 and the expander 8 in a direction perpendicular to the wall surface of the straight pipe 7 and the expander 8. At the same time, the water to be heated with a temperature of 43°C, a pressure of 2MPa, and a flow rate of 500t / h flows from the water inlet. The pipe 4 enters, passes through the converging pipe 5, and rotates under the effect of the converging static mixer 6 to reach the straight pipe 7 and the diverging pipe 8, and mixes with the steam for heat exchang...

Embodiment 2

[0020] The steam with a temperature of 170°C, a pressure of 0.8 MPa, and a flow rate of 8 t / h enters the steam chamber 3 tangentially through at least one pair of steam inlet pipes 1 uniformly arranged on the steam sleeve 2 and tangential to it. In the example, there are two pairs of steam inlet pipes 1; then, the steam evenly passes through the straight pipe steam holes 11 arranged on the straight pipe 7 and the expander steam holes 12 arranged on the expander pipe 8, Enter the inside of the straight pipe 7 and the expander 8 in a direction perpendicular to the wall surface of the straight pipe 7 and the expander 8. At the same time, the water to be heated with a temperature of 60°C, a pressure of 0.4MPa, and a flow rate of 315t / h flows from the water The inlet pipe 4 enters, passes through the converging pipe 5, and under the effect of the converging static mixer 6, rotates to reach the straight pipe 7 and the diverging pipe 8, mix with the steam, perform heat exchange, and, ...

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PUM

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Abstract

The invention discloses a steam-water mixing heater, which comprises a Lafal nozzle pipe which is sequentially connected by a converging pipe, a straight pipe and a diverging pipe, a water inlet pipe arranged at one end of the nozzle pipe and a The outlet pipe of the water inlet pipe and the convergent pipe are provided with a tapered static mixer, and the middle of the outlet pipe and the divergent pipe is provided with a tapered static mixer; on the wall of the straight pipe and with it Steam holes are respectively provided on the pipe wall at the end of the connected expander pipe; a steam sleeve is sheathed from the straight pipe to the outside of the expander pipe, and one end of the steam sleeve is flush with the inlet of the straight pipe, The other end is flush with the outlet of the expander to form a steam cavity; at least a pair of steam inlet pipes are arranged symmetrically and tangentially on the end of the steam sleeve. The invention solves the problems of uneven force on the nozzle, uneven steam intake and uneven heating temperature, and can realize quietness and high-quality heat exchange effect at the same time.

Description

technical field [0001] The invention relates to a heating device, in particular to a heater which is heated by mixing steam and water. Background technique [0002] At present, there are two main types of steam-water heating devices. One type uses a partition wall heat exchanger, that is, the steam and water do not contact, the steam condenses into water through the heater, and the water becomes higher temperature water through the heater; the other type It uses a steam-water mixing device, that is, steam and water are in direct contact, usually a steam inlet pipe and a water inlet pipe, in the steam-water mixing space, the steam condenses into water and the heated water is mixed together, and finally from a water outlet Tube out. Mixing and heating of steam and water is usually composed of an inner nozzle pipe and an outer jacket steam pipe, and the upper part of the steam pipe is connected with a steam inlet pipe. Hybrid heater" and CN201420361429.9 disclose a "silent so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28C3/08
Inventor 邓常红王玉郭庆丰朱金辉胡斌
Owner CHINA NAT OFFSHORE OIL CORP