CN111661890A - Small-size spray tower tray vertical deaerator - Google Patents

Abstract

The invention belongs to the technical field of deaerators of chemical equipment, and relates to a spray tower type deaerator, in particular to a small spray tower tray vertical deaerator which solves the technical problems in the background technology and comprises an equipment shell and an internal device, wherein the equipment shell comprises a pressure container cylinder, a top pressure container end socket and a bottom pressure container end socket; the internal device comprises an oval end socket, a spray head, a tray assembly, an air ventilation cylinder, a water pan and a pressurized steam flow guide device. The invention has simple equipment and lower cost; through setting up the shower nozzle for the deoxidization water yield is few, and through tertiary heating deoxidization, final deoxidization is effectual, safe and reliable, can also soften water simultaneously, can be for some small-size chemical plant reduce cost.

Description

Small-size spray tower tray vertical deaerator

Technical Field

The invention belongs to the technical field of deaerators of chemical equipment, and relates to a spray tower type deaerator, in particular to a small spray tower tray vertical deaerator.

Background

The main reason for the corrosion of boilers, waste boilers, steam drums and other thermal equipment and pipelines is that water contains oxygen-containing soluble gases, which are in a free state and can directly react with steel metal under a high temperature condition, so that the thermal equipment and pipelines are corroded, and therefore, the oxygen dissolved in the water is very disadvantageous to the safe and reliable operation of the boilers, waste boilers, steam drums and other thermal equipment and pipelines. In order to prevent chemical corrosion in thermal equipment and pipes such as boilers, waste boilers, steam drums, etc., caused by the dissolved gases such as oxygen contained in the feed water, it is necessary to remove oxygen from the feed water and remove most of the corrosive gases in the water.

In some small chemical devices, deoxygenated water needs to be provided for thermal equipment such as boilers, waste boilers or steam drums, and the conventional thermal deoxygenation equipment cannot meet the requirements of the devices because the required water quantity is less and the oxygen content of the required water is low. Therefore, the design of a deaerator with less deaerating water amount, good deaerating effect, safety and reliability is a problem which needs to be solved urgently.

Disclosure of Invention

The invention aims to solve the technical problem of how to provide a deaerator which has the advantages of small deaerating water quantity, good deaerating effect, safety and reliability in the background technology, and provides a small spray tray vertical deaerator.

The technical means for solving the technical problems of the invention is as follows: a small spray tower tray vertical deaerator comprises an equipment shell and an internal device, wherein the equipment shell comprises a pressure container cylinder, a top pressure container end enclosure and a bottom pressure container end enclosure, the top pressure container end enclosure and the bottom pressure container end enclosure are arranged at two ends of the pressure container cylinder, a make-up water inlet is formed in the top pressure container end enclosure, a deaerated water outlet is formed in the bottom pressure container end enclosure, and a pressurized steam inlet is formed in the pressure container cylinder; the internal device comprises a pressurized steam guide device, a water receiving tray and a tray assembly; the inner side of a water replenishing inlet of the top pressure container sealing head is fixedly connected with an oval sealing head, the top pressure container sealing head outside the oval sealing head is also provided with an air outlet, and the oval sealing head is provided with at least one spray head; the pressurized steam flow guiding device comprises an inner barrel and an outer barrel which are sleeved with each other, the top of the outer barrel is hermetically connected with the upper part of the outer wall of the inner barrel through a sealing plate, the bottom of the inner barrel is positioned in the outer barrel, the bottom of the outer barrel is welded with a right vertical circular truncated cone barrel, the lower part of the right vertical circular truncated cone barrel is provided with a flow guiding baffle, the flow guiding baffle comprises a conical baffle and an inverted circular truncated cone barrel, the bottom of the conical baffle is welded with the bottom of the inverted circular truncated cone barrel, the lower part of the right vertical circular truncated cone barrel is welded with the outer wall of the conical baffle through at least three connecting ribs, the lower part of the right vertical circular truncated cone barrel is positioned at the inner side of the inverted circular truncated cone; the water receiving tray comprises a tray body with a vent hole in the middle, water through holes are densely distributed in the bottom of the tray body outside the vent hole, the water receiving tray is positioned above the pressurized steam flow guiding device, the top of an inner barrel of the pressurized steam flow guiding device is welded with the vent hole in the bottom of the water receiving tray, and the periphery of the water receiving tray is hermetically connected with a barrel of the pressure container; the tower tray assembly is located on the water pan, the bottom of the tower tray assembly is connected with the pressure vessel barrel through the support frame, the top periphery of the tower tray assembly is connected with the pressure vessel barrel in a sealing mode through the annular plate, the annular plate on the outer side of the top of the tower tray assembly is further connected with at least two ventilation barrels in a penetrating mode, a horizontal baffle is connected to the position right above the ventilation barrels through the connecting ribs, a ventilation gap is reserved between the horizontal baffle and the top of the ventilation barrels, and the spray head is located right above the tower tray assembly. The pressurized steam flow guiding device is used for enabling steam to flow vertically upwards, so that a cylindrical barrel is further connected to the top of the inverted circular truncated cone barrel, and a connecting rib plate is connected between the cylindrical barrel and the outer wall of the upright circular truncated cone barrel.

In the present invention, the main function of the make-up water inlet is to provide a source of water to the nozzles of the apparatus. The primary function of the vent is to vent the gas within the vessel during operation, servicing and maintenance of the apparatus. The deoxidized water outlet mainly has the functions of providing qualified deoxidized water oval end enclosure for other equipment for receiving supplementary water, and the spray head arranged on the oval end enclosure is used for spraying the supplementary water into the pressure container in a water mist shape according to a certain angle; the tower tray assembly is used for enabling the supplementing water sprayed by the spray head to pass through the tower tray assembly to form a water film to continuously flow downwards in a first-level and first-level mode; the water receiving tray is used for receiving water flowing down from the tower tray assembly, then the water flows down through the water through holes at the bottom of the water receiving tray and flows into the water chamber of the pressure container; the pressurized steam flow guiding device is provided with two steam outlets, namely, first steam directly passes through the inner cylinder from the bottom of the inner cylinder upwards and flows out from the top of the inner cylinder after entering from the pressurized steam inlet, and the steam flows downwards along the upright circular truncated cone cylinder and then flows out upwards after being reversely folded by the conical baffle and the inverted circular truncated cone cylinder; the air cylinder is used for distributing steam accumulated at the tray assembly from the air cylinder, and the horizontal baffle above the air cylinder is used for preventing water sprayed by the nozzle from flowing down from the air cylinder; the pressurized steam flow guiding device is connected with the inner wall of the pressure container cylinder through a connecting rib; the periphery of the water receiving disc is hermetically connected with the pressure vessel cylinder through a ring plate; the supporting frame at the bottom of the tower plate component is made of angle steel.

The deoxidization process of the invention is mainly divided into two medium flow directions, wherein the first medium flow direction is water flow direction, make-up water enters an elliptical seal head of a top pressure container from a make-up water inlet, then is sprayed into the pressure container through a spray head, the make-up water forms a water film flow along a tower disc assembly after being sprayed into the tower disc assembly and continues to flow downwards, the make-up water continues to flow downwards through a water through hole on a water receiving disc after passing through the water receiving disc and forms a water film, and finally enters a water chamber and is supplied to other equipment through a deoxidization water outlet. Secondly, the flow direction of steam is that the pressurized steam enters the pressurized steam flow guiding device through a pressurized steam inlet, one part of the pressurized steam flows out from an outlet at the top of the inner cylinder body and directly carries out first heating deoxidization on a water film in the tower disc assembly, the other part of the pressurized steam flows out from an outlet at the bottom after the conical baffle and the inverted circular truncated cone cylinder body are folded, then the water film formed by the water receiving disc is subjected to second heating deoxidization, and the water of the water receiving disc flows out after the first heating deoxidization from the tower disc assembly, so the water receiving disc is heated secondarily to deoxidize; and then the steam continues to flow upwards after passing through the ventilation barrel and being converged by the steam passing through the tray assembly, a water film formed by the nozzle can be heated and deaerated again, and finally the steam continues to move upwards and is discharged out through the exhaust port.

Preferably, the tray assembly is formed by at least one tray unit concatenation, and the tray unit includes several layers of water receiving tank layers, and every layer of water receiving tank layer is formed by the ascending channel-section steel horizontal interval arrangement of several notches, and the channel-section steel of adjacent water receiving tank layer sets up in turn, and the side welding of tray unit has all water receiving tank layers even to be whole and make tray unit confined closure plate all around. After the water is fully collected in the channel-section steel on top water receiving tank layer, the water overflows to the channel-section steel on second water receiving tank layer, and overflows downwards in sequence, and because there is an interval between the water receiving tank layers, so the drop position can form a water film, and the steam of being convenient for heats the deoxidization to it.

Preferably, the tray assembly consists of one tray unit, which is cylindrical. The structure of the tray unit is reasonable.

Preferably, the tray assembly is formed by splicing seven tray units, and each tray unit is cuboid. The manufacturing process of the tray units is simpler, three tray units are placed in the middle during arrangement, two tray units are uniformly arranged in front of and behind the three tray units in the middle, and the seven tray units are connected together.

Preferably, a first steam guide ring plate is fixedly connected to the top pressure container end enclosure at a height below the spray head, the periphery of the first steam guide ring plate is connected with the inner wall of the top pressure container end enclosure in a sealing mode, the inner ring of the first steam guide ring plate is larger than the spraying range of the spray head at the first steam guide ring plate, the inner ring of the first steam guide ring plate is located right above the tower tray assembly, the inner ring of the first steam guide ring plate is smaller than the top surface area of the tower tray assembly, and the exhaust port is located on the top pressure container end enclosure between the first steam guide ring plate and the oval end enclosure. Specifically, the periphery of the first steam guide ring plate is connected with the inner wall of the seal head of the pressure container in a sealing mode through the cylindrical barrel, and steam can penetrate through the inner ring of the first steam guide ring plate and then is discharged through the exhaust port.

Preferably, a second steam guide ring plate is further connected between the water receiving tray and the tray assembly, the periphery of the second steam guide ring plate is connected with the pressure container barrel in a sealing mode, an inner ring of the second steam guide ring plate is located right below the tray groups, and the area of the inner ring of the second steam guide ring plate is equal to or smaller than the area of the bottom surface of the tray groups. The purpose is to make the steam pass through the inner ring of the second steam guide ring plate in a concentrated manner and then directly act on the bottom surface of the tower disc assembly.

Preferably, the sealing head of the bottom pressure container positioned inside the deoxygenated water outlet is provided with an anti-vortex device. The anti-vortex device can prevent the water in the pressure container from forming a vortex when flowing out, and further avoid the vortex formed by the deoxidized water from shaking the pressure container.

Preferably, the number of the spray heads is two, and the spray quantity of the spray heads is 0.9 t/h; the aperture of a water through hole at the bottom of the water receiving tray is 6 mm; the number of the vent cylinders is four, and the vent cylinders are uniformly distributed on the annular plate on the outer side of the top of the tower tray assembly. Because the hourly jet volume of the spray heads is 0.9t, if two spray heads are arranged, the small spray tray vertical deaerator can deeply deaerate 1.8t of water, so that the deaerating effect is ensured, and the water outlet efficiency is also ensured; the four ventilation cylinders ensure the circulation of steam, prevent excessive pressure concentration of the steam, ensure that the steam can effectively heat and deoxidize water mist sprayed by the spray head, and further improve the deoxidizing effect; the aperture of the water through hole at the bottom of the water receiving tray is 6mm, so that water flowing down from the water receiving tray forms a water film, the water flows down slowly, and the deoxygenation effect is ensured.

Preferably, the pressure vessel cylinder is also provided with a dosing port, a liquid level meter port, an automatic control liquid level meter port, a pressure gauge port, a pressure indicator port, an upper manhole, a lower manhole, a balance pipe port, a steam condensate inlet and an overflow port. The main function of the dosing port is to mix phosphate and water and add the mixture into the equipment, so that the salt which is easy to scale in the water becomes easy-to-remove sediment and forms a layer of protective film on the metal surface to prevent causticity and embrittlement. The liquid level meter port and the automatic control liquid level meter port are mainly used for measuring the liquid level of equipment and playing a role in alarming. The pressure gauge port and the pressure indicator port are mainly used for measuring the pressure of the equipment and playing a role in alarming. The main function of the upper manhole and the lower manhole is to provide access for people or internal parts when the internal parts of the equipment are overhauled or replaced. The main function of the balance pipe orifice is to balance the pressure of the rest equipment and the equipment. The main function of the pressurized steam inlet is to provide a source of steam for the apparatus. The main function of the overflow is to drain excess water when the water level of the device exceeds the maximum water level. The outer parts of the dosing port, the liquid level meter port, the automatic control liquid level meter port, the pressure gauge port, the pressure indicator port, the upper manhole, the lower manhole, the balance pipe port, the steam condensate inlet and the overflow port are all connected with flanges.

Preferably, four lug seats are uniformly welded on the outer side of the pressure container cylinder at the same height. The ear seat is used for the pressure vessel cylinder body to be installed more stably.

The invention has the beneficial effects that: the equipment is simple and the cost is low; through setting up the shower nozzle for the deoxidization water yield is few, and through tertiary heating deoxidization, final deoxidization is effectual, safe and reliable, can also soften water simultaneously, can be for some small-size chemical plant reduce cost.

Drawings

Fig. 1 is a schematic structural diagram of an equipment shell of a small spray tray vertical deaerator in the invention.

Fig. 2 is a schematic structural diagram of an internal device of the small spray tray vertical deaerator.

Fig. 3 is a partial structural schematic diagram of fig. 2.

Fig. 4 is a schematic structural view of a pressurized steam guiding device according to the present invention.

Fig. 5 is a schematic diagram of the structure of the tray unit of the present invention.

Fig. 6 is a schematic longitudinal cross-sectional view of a tray unit according to the present invention.

Fig. 7 is a top view of the tray unit of the present invention spliced into a tray assembly.

Fig. 8 is a schematic view of the overall structure of the head according to the present invention.

Fig. 9 is a schematic top view of the showerhead of the present invention.

In the figure: 1-pressure vessel cylinder; 2-sealing the top pressure container end; 3-sealing the bottom pressure container end; 4-make-up water inlet; 5-a deoxygenated water outlet; 6-inlet of pressurized steam; 7-a pressurized steam guiding device; 8-a water pan; 9-tray assembly; 10-an elliptical head; 11-an exhaust port; 12-a spray head; 13-inner cylinder; 14-an outer cylinder; 15-closing the plate; 16-erecting a circular truncated cone cylinder; 17-a conical baffle; 18-an inverted round table cylinder; 19-a support frame; 20-a ventilating cylinder body; 21-a horizontal baffle; 22-water receiving tank layer; 23-channel steel; 24-a blocking plate; 25-a first steam deflector ring plate; 26-a second steam deflector ring plate; 27-an anti-vortex device; 28-ear seat.

Detailed Description

A small spray tray vertical deaerator in accordance with the present invention is described in detail with reference to fig. 1-9.

A small spray tray vertical deaerator comprises an equipment shell and an internal device, as shown in figure 1, the equipment shell comprises a pressure vessel cylinder 1, a top pressure vessel seal head 2 and a bottom pressure vessel seal head 3 which are arranged at two ends of the pressure vessel cylinder 1, the top pressure vessel seal head 2 is provided with a make-up water inlet 4, the bottom pressure vessel seal head 3 is provided with a deoxygenated water outlet 5, and the pressure vessel cylinder 1 is provided with a pressurized steam inlet 6; as shown in fig. 2 and 3, the internal device comprises a pressurized steam guiding device 7, a water receiving tray 8 and a tray assembly 9; an oval seal head 10 is fixedly connected to the inner side of a supplementing water inlet 4 of the top pressure container seal head 2, an air outlet 11 is formed in the top pressure container seal head 2 outside the oval seal head 10, and at least one spray head 12 is installed on the oval seal head 10; as shown in fig. 4, the pressurized steam guiding device 7 comprises an inner cylinder 13 and an outer cylinder 14 which are sleeved with each other, the top of the outer cylinder 14 is hermetically connected with the upper part of the outer wall of the inner cylinder 13 through a sealing plate 15, the bottom of the inner cylinder 13 is positioned in the outer cylinder 14, the bottom of the outer cylinder 14 is welded with a right vertical circular truncated cone 16, the lower part of the right vertical circular truncated cone 16 is provided with a guiding baffle which comprises a conical baffle 17 and an inverted circular truncated cone 18, the bottom of the conical baffle 17 is welded with the bottom of the inverted circular truncated cone 18, the lower part of the right vertical circular truncated cone 16 is welded with the outer wall of the conical baffle 17 through at least three connecting ribs, the lower part of the right vertical circular truncated cone 16 is positioned at the inner side of the inverted circular truncated cone 18, the side wall of the outer cylinder 14 is communicated with the pressurized; the water receiving tray 8 comprises a tray body with a vent hole in the middle, the bottom of the tray body, which is positioned outside the vent hole, is densely provided with water through holes, the water receiving tray 8 is positioned on the pressurized steam flow guiding device 7, the top of an inner barrel body 13 of the pressurized steam flow guiding device 7 is welded with the vent hole in the bottom of the water receiving tray 8, and the periphery of the water receiving tray 8 is hermetically connected with the pressure container barrel body 1; the tower tray assembly 9 is located on the water receiving tray 8, the bottom of the tower tray assembly 9 is connected with the pressure container barrel 1 through the support frame 19, the top periphery of the tower tray assembly 9 is connected with the pressure container barrel 1 in a sealing mode through a ring plate, at least two ventilation barrels 20 are further connected on the ring plate on the outer side of the top of the tower tray assembly 9 in a penetrating mode, a horizontal baffle 21 is connected to the position right above the ventilation barrels 20 through a connecting rib, a ventilation gap is reserved between the horizontal baffle 21 and the top of the ventilation barrels 20, and the spray head 12 is located right above the tower tray assembly 9. In order to enable the steam to flow vertically and upwards, the pressurized steam guide device 7 is further connected with a cylindrical barrel at the top of the inverted circular truncated cone barrel 18, and a connecting rib plate is connected between the cylindrical barrel and the outer wall of the upright circular truncated cone barrel 16.

In the present invention, the main function of the make-up water inlet 4 is to provide a source of water to the nozzles of the apparatus. The primary function of the vent 11 is to vent the gas in the vessel during operation, servicing and maintenance of the apparatus. The deoxidized water outlet 5 is mainly used for providing qualified deoxidized water oval end enclosure 10 for other equipment for receiving supplementary water, and a spray head 12 arranged on the oval end enclosure 10 is used for spraying the supplementary water into the pressure container in a water mist shape according to a certain angle; the tower tray assembly 9 is used for enabling the supplementing water sprayed by the spray head 12 to pass through the tower tray assembly 9 to form a water film to continuously flow downwards in a first-level and first-level mode; the water receiving tray 8 is used for receiving water flowing down from the tray assembly 9, then the water flows down through the water through holes in the tray bottom of the water receiving tray 8 and flows into the water chamber of the pressure container; the pressurized steam flow guiding device 7 is provided with two steam outlets, namely, first steam directly passes through the inner cylinder 13 from the bottom of the inner cylinder 13 upwards and flows out from the top of the inner cylinder 13 after entering from the pressurized steam inlet 6, flows downwards along the upright circular truncated cone cylinder 16, then flows upwards after being reversely folded by the conical baffle 17 and the inverted circular truncated cone cylinder 18; the air cylinder 20 is used for distributing steam accumulated on the tray assembly 9 from the air cylinder 20, and the horizontal baffle 21 above the air cylinder 20 is used for preventing water sprayed by the nozzle from flowing down from the air cylinder 20; the pressurized steam flow guiding device 7 is connected with the inner wall of the pressure vessel cylinder 1 through a connecting rib; the periphery of the water receiving disc 8 is hermetically connected with the pressure vessel cylinder 1 through a ring plate; the support bracket 19 at the bottom of the tray assembly 9 is made of angle steel.

Further, as a specific embodiment of the small spray tray vertical deaerator of the present invention, the tray assembly 9 is formed by splicing at least one tray unit, the tray unit includes a plurality of water receiving tank layers 22, each water receiving tank layer 22 is formed by horizontally arranging a plurality of channel steel 23 with upward notches at intervals, the channel steel 23 of adjacent water receiving tank layers 22 are arranged in a staggered manner, and a blocking plate 24 is welded to the side surface of the tray unit to connect all the water receiving tank layers 22 into a whole and seal the periphery of the tray unit, as specifically shown in fig. 5 and 6. After supplementing water and collecting full water in channel-section steel 23 of top water receiving tank layer 22 like this, during water will overflow channel-section steel 23 on second water receiving tank layer 22, downward overflow in proper order, because there is the interval between the water receiving tank layer 22, so the drop position can form the water film, and the steam of being convenient for heats the deoxidization to it.

Further, as a specific embodiment of the small spray tray vertical deaerator of the present invention, the tray assembly 9 is composed of a tray unit, and the tray unit is cylindrical. The structure of the tray unit is reasonable.

Further, as a specific embodiment of the small spray tray vertical deaerator of the present invention, the tray assembly 9 is formed by splicing seven tray units, and each tray unit is rectangular. Thus, the manufacturing process of the tray units is simpler, three tray units are placed in the middle during arrangement, two tray units are arranged in front of and behind the middle three tray units, and seven tray units are connected together, as shown in fig. 7.

Further, as a specific embodiment of the vertical deaerator for the small spray tray of the present invention, as shown in fig. 2, a first steam guide ring plate 25 is fixedly connected to the top pressure vessel head 2 at a height below the spray nozzle 12, the periphery of the first steam guide ring plate 25 is connected to the inner wall of the top pressure vessel head 2 in a sealing manner, the inner ring of the first steam guide ring plate 25 is larger than the spraying range of the spray nozzle 12 at the first steam guide ring plate 25, the inner ring of the first steam guide ring plate 25 is located right above the tray assembly 9 and is smaller than the top surface area of the tray assembly 9, and the exhaust port 11 is located on the top pressure vessel head 2 between the first steam guide ring plate 25 and the elliptical head 10. Specifically, the periphery of the first steam guide ring plate 25 is connected with the inner wall of the seal head of the pressure vessel in a sealing manner through a cylindrical barrel, and steam can pass through the inner ring of the first steam guide ring plate 25 and then is discharged through the exhaust port 11.

Further, as a specific embodiment of the small spray tray vertical deaerator in the present invention, as shown in fig. 2, a second steam guide ring plate 26 is further connected between the water receiving tray 8 and the tray assembly 9, the periphery of the second steam guide ring plate 26 is connected to the pressure vessel cylinder 1 in a sealing manner, the inner ring of the second steam guide ring plate 26 is located right below the tray groups, and the inner ring area of the second steam guide ring plate 26 is equal to or smaller than the bottom surface area of the tray groups. This is to concentrate the steam through the inner ring of the second steam deflector ring plate 26 and directly onto the bottom surface of the tray assembly 9.

Further, as a specific embodiment of the small spray tray vertical deaerator of the present invention, as shown in fig. 2, a vortex preventing device 27 is provided on the bottom pressure vessel head 3 inside the deoxygenated water outlet 5. The vortex preventing device 27 can prevent the water in the pressure container from forming a vortex when flowing out, and further avoid the vortex formed by the deoxygenated water from shaking the pressure container.

Further, as a specific embodiment of the small spray tray vertical deaerator of the present invention, the number of the spray heads 12 is two, the injection amount of the spray heads 12 is 0.9t/h, and the structure of the spray heads is shown in fig. 8 and 9; the aperture of a water through hole at the bottom of the water pan 8 is 6 mm; the number of the vent cylinders 20 is four, and the vent cylinders 20 are uniformly distributed on the ring plate on the outer side of the top of the tower tray assembly 9. Because the hourly jet volume of the spray heads 12 is 0.9t, if two spray heads 12 are arranged, the small spray tray vertical deaerator can deeply deaerate 1.8t of water, so that the deaerating effect is ensured, and the water outlet efficiency is also ensured; the four ventilation cylinders 20 ensure the circulation of steam, prevent excessive pressure concentration of the steam, ensure that the steam can effectively heat and deoxidize the water mist sprayed by the spray head 12, and further improve the deoxidizing effect; the aperture of the water through hole at the bottom of the water receiving tray 8 is 6mm, so that water flowing down from the water receiving tray 8 forms a water film, the water flows down slowly, and the deoxygenation effect is ensured.

Further, as a specific embodiment of the small spray tray vertical deaerator of the present invention, as shown in fig. 1, a chemical feeding port, a liquid level gauge port, an automatic control liquid level gauge port, a pressure indicator port, an upper manhole, a lower manhole, a balance pipe port, a steam condensate inlet, and an overflow port are further provided on the pressure vessel cylinder 1. The main function of the dosing port is to mix phosphate and water and add the mixture into the equipment, so that the salt which is easy to scale in the water becomes easy-to-remove sediment and forms a layer of protective film on the metal surface to prevent causticity and embrittlement. The liquid level meter port and the automatic control liquid level meter port are mainly used for measuring the liquid level of equipment and playing a role in alarming. The pressure gauge port and the pressure indicator port are mainly used for measuring the pressure of the equipment and playing a role in alarming. The main function of the upper manhole and the lower manhole is to provide access for people or internal parts when the internal parts of the equipment are overhauled or replaced. The main function of the balance pipe orifice is to balance the pressure of the rest equipment and the equipment. The main function of the pressurised steam inlet 6 is to provide a source of steam for the apparatus. The main function of the overflow is to drain excess water when the water level of the device exceeds the maximum water level. The outer parts of the dosing port, the liquid level meter port, the automatic control liquid level meter port, the pressure gauge port, the pressure indicator port, the upper manhole, the lower manhole, the balance pipe port, the steam condensate inlet and the overflow port are all connected with flanges.

Further, as a specific embodiment of the vertical deaerator with the small spray tray of the present invention, as shown in fig. 1, four ear seats 28 are uniformly welded on the same height outside the cylinder 1 of the pressure vessel. The ear seat 28 is intended to provide a more stable mounting of the pressure vessel cylinder 1.

When the device is used, the deoxygenation process of the device mainly comprises two medium flow directions, wherein the first medium flow direction is the water flow direction, make-up water enters an elliptical seal head 10 of a seal head 2 of a pressure container at the top from a make-up water inlet 4, then is sprayed into the pressure container through a spray head 12, make-up water mist sprayed out of the spray head 12 penetrates through a first steam guide ring plate 25 and then is sprayed onto a tower disc assembly 9, then forms a water film flow along the tower disc assembly 9 and continues to flow downwards, and make-up water flows onto a water receiving disc 8 after penetrating through the steam guide ring plate and continues to flow downwards through a water through hole in the water receiving disc 8 to form a water film, finally enters a water chamber and is supplied to other devices through a deoxygenated water outlet 5. Secondly, the flow direction of the steam is that the pressurized steam enters the pressurized steam flow guide device 7 through the pressurized steam inlet 6, one part of the pressurized steam flows out from an outlet at the top of the inner cylinder 13, passes through the steam flow guide ring plate and directly carries out first heating deoxidization on a water film in the tower tray assembly 9, one part of the pressurized steam flows out from an outlet at the bottom after being reversely folded by the conical baffle 17 and the inverted circular truncated cone cylinder 18, and then the water film formed by the water receiving tray 8 is subjected to second heating deoxidization, and because the water of the water receiving tray 8 flows out from the tower tray assembly 9 after being subjected to first heating deoxidization, the water receiving tray 8 is subjected to second heating deoxidization; and then the steam continues to flow upwards after passing through the ventilation cylinder body 20 and being converged by the steam passing through the tray assembly 9, the water film formed by the nozzle can be heated and deoxidized again, and finally the steam continues to move upwards and is discharged from the exhaust port 11 after passing through the first steam guide ring plate 25.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A small spray tray vertical deaerator is characterized by comprising an equipment shell and an internal device, wherein the equipment shell comprises a pressure container cylinder (1), and a top pressure container seal head (2) and a bottom pressure container seal head (3) which are arranged at two ends of the pressure container cylinder (1), the top pressure container seal head (2) is provided with a make-up water inlet (4), the bottom pressure container seal head (3) is provided with a deoxidized water outlet (5), and the pressure container cylinder (1) is provided with a pressurized steam inlet (6); the internal device comprises a pressurized steam guide device (7), a water receiving tray (8) and a tray assembly (9); an oval seal head (10) is fixedly connected to the inner side of a water supplementing inlet (4) of the top pressure container seal head (2), an air outlet (11) is formed in the top pressure container seal head (2) outside the oval seal head (10), and at least one spray head (12) is installed on the oval seal head (10); the pressurized steam flow guide device (7) comprises an inner cylinder (13) and an outer cylinder (14) which are sleeved with each other, the top of the outer cylinder (14) is hermetically connected with the upper part of the outer wall of the inner cylinder (13) through a sealing plate (15), the bottom of the inner cylinder (13) is positioned in the outer cylinder (14), the bottom of the outer cylinder (14) is welded with a right vertical circular truncated cone cylinder (16), the lower part of the right vertical circular truncated cone cylinder (16) is provided with a flow guide baffle plate, the flow guide baffle plate comprises a conical baffle plate (17) and an inverted circular truncated cone cylinder (18), the bottom of the conical baffle plate (17) is welded with the bottom of the inverted circular truncated cone cylinder (18), the lower part of the right vertical circular truncated cone cylinder (16) is welded with the outer wall of the conical baffle plate (17) through at least three connecting ribs, the lower part of the right vertical circular truncated cone cylinder (16) is positioned on the inner side of the, the pressurized steam flow guide device (7) is connected with the pressure vessel cylinder (1); the water receiving tray (8) comprises a tray body with a vent hole in the middle, the bottom of the tray body, which is positioned outside the vent hole, is densely provided with water through holes, the water receiving tray (8) is positioned on the pressurized steam flow guide device (7), the top of an inner barrel (13) of the pressurized steam flow guide device (7) is welded with the vent hole in the bottom of the water receiving tray (8), and the periphery of the water receiving tray (8) is hermetically connected with the pressure container barrel (1); tower plate subassembly (9) are located on water collector (8), the bottom of tower plate subassembly (9) is passed through support frame (19) and is connected with pressure vessel barrel (1), the top periphery of tower plate subassembly (9) is passed through the crown plate and is connected with pressure vessel barrel (1) closure, it is connected with two at least ventilation barrel (20) still to wear to put on the crown plate in tower plate subassembly (9) top outside, be connected with horizontal baffle (21) through the splice bar directly over ventilation barrel (20), and leave the space of ventilating between the top of horizontal baffle (21) and ventilation barrel (20), shower nozzle (12) are located tower plate subassembly (9) directly over.

2. The small spray tray vertical deaerator as claimed in claim 1, wherein the tray assembly (9) is formed by splicing at least one tray unit, the tray unit comprises a plurality of water receiving tank layers (22), each water receiving tank layer (22) is formed by horizontally arranging a plurality of channel steels (23) with upward notches at intervals, the channel steels (23) of adjacent water receiving tank layers (22) are arranged in a staggered manner, and the side surface of the tray unit is welded with a blocking plate (24) which connects all the water receiving tank layers (22) into a whole and closes the periphery of the tray unit.

3. A compact spray tray oxygen scavenger according to claim 2 wherein the tray assembly (9) comprises a cylindrical tray unit.

4. The small spray tray vertical deaerator according to claim 2, wherein the tray assembly (9) is formed by splicing seven tray units each having a rectangular parallelepiped shape.

5. The small spray tray vertical deaerator as claimed in claim 1, wherein a first steam guide ring plate (25) is fixedly connected to a top pressure vessel head (2) at a height below the spray head (12), the periphery of the first steam guide ring plate (25) is connected to the inner wall of the top pressure vessel head (2) in a sealing manner, the inner ring of the first steam guide ring plate (25) is larger than the spray range of the spray head (12) at the first steam guide ring plate (25), the inner ring of the first steam guide ring plate (25) is located right above the tray assembly (9) and smaller than the top surface area of the tray assembly (9), and the exhaust port (11) is located on the top pressure vessel head (2) between the first steam guide ring plate (25) and the oval head (10).

6. The small spray tray vertical deaerator as claimed in claim 1, wherein a second steam guide ring plate (26) is connected between the water receiving tray (8) and the tray set, the periphery of the second steam guide ring plate (26) is hermetically connected with the pressure vessel cylinder (1), the inner ring of the second steam guide ring plate (26) is located right below the tray set, and the area of the inner ring of the second steam guide ring plate is equal to or smaller than the area of the bottom surface between the tray set.

7. The small spray tray vertical deaerator according to claim 1, characterized in that a vortex preventing means (27) is provided on the bottom pressure vessel head (3) inside the deoxygenated water outlet (5).

8. The small spray tray vertical deaerator according to any one of claims 1 to 7, characterized in that the number of the spray heads (12) is two, and the spray amount of the spray heads (12) is 0.9 t/h; the aperture of a limber hole at the bottom of the water pan (8) is 6 mm; the number of the ventilation cylinder bodies (20) is four, and the ventilation cylinder bodies (20) are uniformly distributed on the annular plate on the outer side of the top of the tray component (9).

9. The small spray tray vertical deaerator as claimed in claim 8, wherein the pressure vessel cylinder (1) is further provided with a chemical feeding port, a liquid level gauge port, an automatic control liquid level gauge port, a pressure indicator port, an upper manhole, a lower manhole, a balance pipe port, a steam condensate inlet and an overflow port.

10. The small spray tray vertical deaerator according to claim 9, characterized in that four lugs (28) are welded uniformly on the same height outside the pressure vessel cylinder (1).

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