CN110230810A - Without discharge of steam energy-saving deaerator - Google Patents

Abstract

The invention provides an energy-saving deaerator without steam emission, which includes a deaerator water tank and a deaerator head installed on the deaerator water tank. The inner cavity of the deaerator head is communicated with the inner cavity of the deaerator water tank through a downpipe. It is fixedly connected to the deaerator water tank, and the inner cavity of the deaerator head is installed with a heat exchange tube, a spinning film tube assembly, a water grate layer, a packing layer and a steam distribution plate from top to bottom. The invention utilizes the bubbler to fully cover the water in the deoxygenated water tank, avoiding the occurrence of water hammer, and at the same time, using the bubbling effect to absorb oxygen in the water during the upward flow of the water bubble, and when the water bubble breaks to sleep , the water destroys the water surface tension, and it is easy to cause oxygen to separate out from the water; the steam in the deaeration tank and the heating steam distributed by the steam distribution plate can be collected by the steam-water separator installed under the transverse sealing plate, so as to deoxidize the heat exchange tube. The heat exchange of water improves the utilization rate of water vapor heat and avoids the waste of water resources and energy.

Description

No steam emission energy saving deaerator

technical field

The invention relates to the technical field of an exhaust steam recovery device, and more particularly, to an energy-saving deaerator without steam emission.

Background technique

The thermal deaerator is a new type of thermal deaerator, which can remove dissolved oxygen and other gases in the feed water of the thermal system and prevent the corrosion of thermal equipment. It is an important equipment to ensure the safe operation of power plants and industrial boilers. During the use of the thermal deaerator, the continuously entering desalinated water must be heated and deoxygenated, which requires the continuous discharge of oxygen and other gases escaping from the water surface. For this reason, a pipe valve for discharging into the atmosphere is provided at the top of the deaerator. , the deaerator will also discharge part of the steam when it discharges oxygen and other gases, causing a lot of waste of water resources and energy, resulting in a low utilization rate of water vapor heat, and noise pollution to the environment. At present, although many energy-saving companies have developed such equipment and thermal systems for waste steam recycling, they are all cumbersome and the investment cost is relatively large.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is aimed at the deficiencies of the prior art, and provides a steam-free energy-saving deaerator with good deoxidizing effect and low energy consumption, which can ensure pollution-free emission. The specific scheme is as follows:

The invention is an energy-saving deaerator without steam emission, which includes a deaerator water tank and a deaerator head installed on the deaerator water tank. The deaerator water tank is fixedly connected, and its characteristics are: the inner cavity of the deaerator head is installed with a heat exchange tube, a spinning film tube assembly, a water grate layer, a packing layer and a steam distribution plate from top to bottom; the heat exchange tube Horizontal arrangement, both ends of the heat exchange tube protrude out the deaerator head, the inner cavity of the heat exchange tube is divided into left, middle and right three along the axial direction of the heat exchange tube by two vertical partition plates The chamber is divided into upper and lower chambers by a horizontal partition plate inside the right chamber, the upper chamber is the water inlet chamber, the lower chamber is the water outlet chamber, and a demineralized water inlet pipe is installed on the water inlet chamber , a desalinated water outlet pipe is installed on the water outlet chamber, a number of water inlet heat exchange pipes connecting the water inlet chamber and the left chamber are arranged inside the middle chamber of the heat exchange tube, and a number of outlet pipes connecting the water outlet chamber and the left chamber are arranged. The water heat exchange tube is provided with a transverse sealing plate fixedly connected to the inner wall of the deaerator head between the rotating film tube assembly and the heat exchange tube, and a steam-water separator is arranged below the transverse sealing plate, and the steam-water separator is vertically connected The tube communicates with the middle chamber of the heat exchange tube, and the horizontal sealing plate is provided with a through hole through which the vertical connecting tube passes, and an exhaust port is provided on the top of the deaerator head, and the exhaust port is connected to the heat exchange through the exhaust pipe. The middle chambers of the tubes are communicated; the spinning membrane tube assembly includes several vertically arranged spinning membrane tubes, and the water inlet end of the spinning membrane tubes is connected with the demineralized water outlet pipe through the spinning membrane water inlet tube, and is installed on the spinning membrane water inlet tube There is a rotary film tube control valve; the water grate layer includes several horizontal grate plates distributed from top to bottom, and a number of diversion protrusions for diversion are arranged side by side on the horizontal grate board, and between adjacent diversion protrusions are provided with a water channel; the steam distribution plate is provided with a distribution plate heating steam inlet pipe extending out of the deaerator head; the inner cavity of the deaerator water tank is provided with a water hammer to prevent the steam condensed water in the deaerator head from entering the deaerator water tank Phenomenal bubbler, the bubbler includes a water tank steam inlet pipe and a hollow steam main pipe immersed in the low-temperature water of the deoxygenated water tank. One end of the hollow steam main pipe is connected to the lower end of the water tank steam inlet pipe, and the upper end of the water tank steam inlet pipe extends upward. Out of the deaerator water tank, the length direction of the hollow steam main pipe is parallel to the length of the deaerator water tank, and a number of steam branch pipes are arranged on the left and right sides of the hollow steam main pipe along the length direction of the hollow steam main pipe. There are several steam outlets; outside the deoxygenation water tank, there is a water tank steam circulation pipe, the steam inlet end of the water tank steam circulation pipe is communicated with the inner cavity of the deoxygenation water tank, and the steam outlet end of the water tank steam circulation pipe is arranged on the rotating film tube assembly It is connected with the deaerator head between the water grate layers and communicated with the inner cavity of the deaerator head.

The technical problem to be solved by the present invention can also be further achieved by the following technical solutions. A steam-water separator control valve is installed on the vertical connecting pipe.

The technical problem to be solved by the present invention can also be further achieved by the following technical solutions. The heat exchange tube is provided with a condensed water outlet pipe that communicates with the intermediate chamber, and the condensed water outlet pipe extends obliquely downward with a deaerator head.

The technical problem to be solved by the present invention can also be further achieved by the following technical solutions: a water outlet is provided at the bottom of the deaerator water tank, and the downpipe is arranged on the deaerator water tank directly above the water outlet.

The technical problem to be solved by the present invention can be further achieved by the following technical solutions, wherein four horizontal grate plates are arranged from top to bottom, and the diversion protrusions on adjacent horizontal grate plates are staggered.

The technical problem to be solved by the present invention can also be further achieved by the following technical solutions, the steam branch pipes between adjacent ones are arranged at equal intervals.

The technical problem to be solved by the present invention can be further achieved by the following technical solutions, the angle between the steam branch pipe and the hollow steam main pipe is 15°-45°.

Compared with the prior art, the present invention has the following beneficial effects: good deoxidizing effect, reduced energy consumption, low operating cost, green environmental protection, reduced waste of water resources during use of the deaerator, and improved utilization of water vapor heat efficiency. The bubbler can be used to fully cover the water in the deoxygenated water tank to avoid the occurrence of water hammer. At the same time, the bubble effect is used to absorb oxygen in the water during the upward flow of the bubbles. When the bubbles burst to sleep, the water Destroying the water surface tension, it is easy to cause oxygen to separate out from the water; the steam in the deaerator water tank and the heating steam distributed by the steam distribution plate can be collected by the steam-water separator installed under the transverse sealing plate, so that the deaerator water in the heat exchange tube can be cleaned. The heat exchange improves the utilization rate of water vapor heat and avoids the waste of water resources and energy.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is a kind of structural representation of the present invention;

Figure 2 is a schematic structural diagram of a heat exchange tube;

FIG. 3 is a schematic diagram of the structure of the water grate layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figures 1, 2, and 3, a steam-free energy-saving deaerator provided in this embodiment includes a deaerator water tank and a deaerator head installed on the deaerator water tank. The inner cavity of the deaerator head passes through The downpipe 13 communicates with the inner cavity of the deaerator water tank, and the downpipe 13 is fixedly connected to the deaerator water tank. The inner cavity of the deaerator head is installed with a heat exchange tube 2, a spinning film tube assembly 10, and a water grate layer 12 from top to bottom. , packing layer 5 and steam distribution plate 6; the heat exchange tube 5 is arranged horizontally, both ends of the heat exchange tube 5 protrude out the deoxidizer head, and the inner cavity of the heat exchange tube is along the axial direction of the heat exchange tube There are left, middle and right chambers separated by two vertical partition plates, and two upper and lower chambers are separated in the interior of the right chamber by a horizontal partition plate, and the upper chamber is the water inlet chamber 17. The lower chamber is a water outlet chamber 18, a demineralized water inlet pipe 8 is installed on the water inlet chamber 17, a demineralized water outlet pipe 9 is installed on the water outlet chamber 18, and the interior of the middle chamber 19 of the heat exchange tube is provided with a connecting water inlet. Several inlet heat exchange tubes of chamber 17 and left chamber 20, as well as several outlet heat exchange tubes of water outlet chamber 18 and left chamber 20, are provided with deaerator heads between the rotating film tube assembly and the heat exchange tubes. The inner wall is fixedly connected to the transverse sealing plate, and a steam-water separator 4 is arranged below the transverse sealing plate. The through hole through which the connecting pipe passes is provided with an exhaust port on the top of the deaerator head, and the exhaust port is communicated with the middle chamber of the heat exchange tube through the exhaust pipe 1; the spinning film tube assembly 10 includes several vertical The water inlet end of the spiral film tube is connected to the desalinated water outlet pipe through the spiral film water inlet pipe, and a spiral film tube control valve is installed on the spiral film water inlet pipe; Several horizontal grate plates 21 are arranged side by side on the horizontal grate plates 21 with a number of diversion protrusions 22 for diversion, and a water channel is provided between the adjacent diversion protrusions 22; The distribution plate outside the oxygen head heats the steam inlet pipe 7; the inner cavity of the deoxygenation water tank is provided with a bubbler to prevent water hammer from occurring when the steam condensed water in the deaerator head enters the deaerator water tank, and the bubbler includes the water tank steam The inlet pipe 14 and the hollow steam main pipe 16 immersed in the low-temperature water of the deaeration water tank, one end of the hollow steam main pipe 16 is communicated with the lower end of the water tank steam inlet pipe 14, and the upper end of the water tank steam inlet pipe extends upwards from the deaeration water tank, and the hollow steam inlet pipe 14 extends upward. The length direction of the main steam main pipe is parallel to the length of the deaerator water tank. A number of steam branch pipes 15 are arranged on the left and right sides of the hollow steam main pipe along the length direction of the hollow steam main pipe, and a number of steam outlets are opened at the outer end of the steam branch pipe 15. There is a water tank steam circulation pipe 11 outside the deoxygenation water tank, the steam inlet end of the water tank steam circulation pipe 11 is communicated with the inner cavity of the deoxygenation water tank, and the steam outlet end of the water tank steam circulation pipe 11 is arranged between the rotating film tube assembly and the water grate. between the layers at the deaerator head and communicate with the inner cavity of the deaerator head. The steam branch pipes are obliquely arranged branch pipes, all of which are 25mm pipes, and 50-80 steam outlets of 3-5mm are distributed at the outer end of each branch pipe. The steam outlets are tangentially inclined holes to ensure that the steam passes through the branch pipes. The released steam can evenly heat the water tank with a height of 300mm upwards.

A steam-water separator control valve is installed on the vertical connection pipe. The condensed water outlet pipe 3 communicated with the intermediate chamber is arranged on the heat exchange tube, and the condensed water outlet pipe 3 extends out the deaerator head obliquely downward. A water outlet is provided at the bottom of the deaeration water tank, and the downpipe is arranged on the deaeration water tank just above the water outlet. Four horizontal grate plates 21 are arranged side by side from top to bottom, and the guide protrusions 22 on adjacent horizontal grate plates are staggered. The adjacent steam branch pipes are arranged at equal intervals. The angle between the steam branch pipe and the hollow steam main pipe is 15°-45°. The bottom of the deaeration water tank is provided with legs. The steam inlet pipe of the water tank is arranged vertically. The angle between the steam branch pipe and the hollow steam main pipe is preferably 20°. The steam outlet is an oblique outlet. The cross-sectional area of the steam outlet is 3-5 times the cross-sectional area of the steam inlet of the steam inlet pipe of the water tank, and it is tangentially released to prevent the water hammer phenomenon caused by steam and low-temperature water. The flexible release of steam solves the problem of noise pollution in the water tank.

During operation, the demineralized water enters the water inlet chamber from the demineralized water inlet pipe 8, and then enters the left chamber of the heat exchange tube along the inlet water heat exchange pipe, and then enters the water outlet chamber from the outlet water heat exchange pipe, and is removed from the demineralized water. The water outlet pipe is discharged into the swirl film tube assembly 10, and after being discharged through the spun film tube, it enters the water grate layer 12. The water droplets fall on the diversion protrusions of the horizontal grate plate 21, and the water droplets are divided into smaller water droplets. After the diversion, it falls into the deaeration water tank through the downpipe 13. While the demineralized water circulates, the heating steam enters the heating steam inlet pipe 7 of the distribution plate of the steam distribution plate. Due to the sealing of the transverse sealing plate, the heating steam can only flow from the steam-water separator. 4 Enter the intermediate chamber 19 of the heat exchange tube, conduct heat exchange between the inlet and outlet heat exchange tubes, and heat the demineralized water in the tube, and the condensed water generated by the heat exchange is discharged from the condensed water outlet pipe 3. The gas is discharged into the atmosphere from the exhaust port at the top of the deaerator head through the exhaust pipe 1, and the discharged gas meets the environmental protection standards. The flow pipe 11 enters the deaerator head and exits, and also enters the intermediate chamber 19 of the heat exchange pipe through the steam-water separator 4, performs heat exchange between the inlet and outlet heat exchange pipes, and heats the demineralized water in the pipe. The gas is discharged into the atmosphere through the exhaust line 1 from the top exhaust port of the deaerator head.

Claims (7)

1. a kind of no discharge of steam energy-saving deaerator, described to remove including deoxygenation water tank and the deoxygenation head being mounted on deoxygenation water tank The inner cavity of oxygen head is communicated by downpipe with the inner cavity of deoxygenation water tank, and downpipe is fixedly connected with deoxygenation water tank, it is characterised in that: In the inner cavity of deoxygenation head, once mounting has heat exchanger tube, rotation membrane pipe component, shutter grate layer, packing layer and steam distribution plate from top to bottom；

The heat exchanger tube is laterally arranged, and the protruding deoxygenation head in the both ends of heat exchanger tube, the inner cavity of the heat exchanger tube is along heat exchanger tube Axial direction has left, intermediate, right three chambers by 2 vertical divides, passes through in the inside of right chamber laterally separated Plate separation have upper and lower two chambers, upper chamber is intake chamber, and lower chambers are water-supplying chamber, be equipped on intake chamber demineralized water into Water pipe is equipped with demineralized water outlet pipe in water-supplying chamber, is equipped with connection intake chamber and left chamber in the inside of heat exchanger tube intermediate cavity Several water inlet heat-exchange tubes of room, and connection water-supplying chamber and left chamber several water outlet heat-exchange tubes, rotation membrane pipe component with It is equipped with the transverse sealing plate being fixedly connected with deoxygenation head inner wall between heat exchanger tube, is equipped with steam-water separation in the lower section of transverse sealing plate Device, steam-water separator are communicated by vertical connecting tube with the intermediate cavity of heat exchanger tube, and vertical connection is equipped on transverse sealing plate The through hole that pipe passes through is equipped with exhaust outlet at the top of deoxygenation head, and exhaust outlet passes through the intermediate cavity of gas exhaust piping and heat exchanger tube It communicates；

The rotation membrane pipe component includes several vertically arranged rotation membrane pipes, and the water inlet end of rotation membrane pipe passes through rotation film water inlet pipe and desalination Water outlet pipe connects, and is equipped with rotation membrane pipe control valve on rotation film water inlet pipe；

Shutter grate layer includes several horizontal grate plates being distributed from top to bottom, and being arranged side by side in horizontal grate plate has leading for several shuntings Stream protrusion is equipped with water-flowing trough between adjacent guide protrusion；

The steam distribution plate is equipped with the distribution plate stretched out outside deoxygenation head and heats steam inlet tube；

The inner cavity of the deoxygenation water tank, which is equipped with, avoids that water hammer occurs when steam condensate enters deoxygenation water tank in deoxygenation head Bubbler, bubbler include water tank steam inlet tube and the hollow main steam header that is immersed in deoxygenation water tank water at low temperature, hollow steam One end of supervisor is connected to the lower end of water tank steam inlet tube, and deoxygenation water tank is stretched out in the upper end of water tank steam inlet tube upwards, it is described in The length direction of empty main steam header and the length square parallel of deoxygenation water tank are arranged, in the left and right sides of hollow main steam header in Empty main steam header length direction is equipped with several steam branch pipes, is provided with several steam (vapor) outlets in the outer end of steam branch pipe；

Water tank steam runner pipe, the inner cavity phase of the admission end and deoxygenation water tank of water tank steam runner pipe are externally provided in deoxygenation water tank Logical, the steam output end of water tank steam runner pipe is arranged at the deoxygenation head between rotation membrane pipe component and shutter grate layer, and in deoxygenation head Chamber communicates.

2. no discharge of steam energy-saving deaerator according to claim 1, it is characterised in that: be equipped in vertical connecting tube Steam-water separator control valve.

3. no discharge of steam energy-saving deaerator according to claim 1, it is characterised in that: be equipped with and centre on heat exchanger tube The condensed water outlet pipe that chamber communicates, condensed water outlet pipe oliquely downward stretch out deoxygenation head.

4. no discharge of steam energy-saving deaerator according to claim 1, it is characterised in that: be equipped in the bottom of deoxygenation water tank Water outlet, the downpipe are arranged on the deoxygenation water tank right above water outlet.

5. no discharge of steam energy-saving deaerator according to claim 1, it is characterised in that: the horizontal grate plate is from top to bottom Equipped with 4, the water conservancy diversion protrusion in adjacent level grate plate is staggered.

6. no discharge of steam energy-saving deaerator according to claim 1, it is characterised in that: the steam branch pipe etc. between adjacent Spacing setting.

7. no discharge of steam energy-saving deaerator according to claim 1, it is characterised in that: the steam branch pipe and hollow steaming Angle between vapour supervisor is 15 ° -45 °.