CN205191543U - Thermal deoxidizing device - Google Patents

Abstract

The utility model discloses a thermal deaerator, which comprises a deaerator head and a deaerator water tank. The deaerator head is installed above the deaerator water tank. , water inlet pipe, rotary cover of deaerator head, upper perforated plate, cylinder body, Raschig ring packing, lower perforated plate and steam inlet pipe, the deaerator water tank includes the standard head of the water tank, the first pipe seat, auxiliary steam Pipe, cylinder body, second pipe seat, third pipe seat, first connecting pipe, second connecting pipe, support, water outlet pipe and water tank rotary cover. The utility model is simple in structure and easy to use, not only can remove oxygen in the water, but also can remove carbon dioxide and oxygen in the water, the deoxygenation effect is stable and reliable, the salt content in the water does not increase after deoxygenation, and the temperature in the deoxygenated water tank can be sensed in real time , in order to control the temperature in the deaeration water tank in time, improve the work efficiency, good load adaptability, small maintenance workload, low cost, suitable for wide use, and has a good application prospect.

Description

A thermal deaerator

technical field

The invention relates to the technical field of thermal deaerators, in particular to a thermal deaerator.

Background technique

Oxygen, nitrogen, carbon dioxide and other gases are often dissolved in boiler feed water. The presence of carbon dioxide and oxygen is prone to corrosion for boilers, especially oxygen, which is a very active gas and can be directly combined with many non-metals. After the combination of non-metal or metal, stable oxides or precipitates are often formed, which will corrode the boiler. It is necessary to remove oxygen from the boiler feed water. Thermal deoxygenation is to use the dissolution characteristics of gas in water. By heating steam, the gas will enter The make-up water, condensed water or other kinds of water in the deaerator are heated to the saturation temperature corresponding to the internal pressure of the deaerator. According to Henry's law and Dalton's law, non-condensable gases such as oxygen and carbon dioxide in dissolved water are separated from the water. , into the atmosphere from the top exhaust pipe, so that the oxygen content in the water reaches the specified standard, and the qualified deoxygenated water is stored in the water tank at the lower part of the deaerator, ready for boiler feed water needs at any time. Therefore, it is suitable for deaeration of all kinds of power plant boilers, industrial boiler feed water and thermal power plant supply water or water for heat users.

Contents of the invention

The object of the present invention is to provide a thermal deaerator with simple structure and convenient operation, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A thermal deaerator, comprising a deaerator head and a deaerator water tank, the deaerator head is installed above the deaerator water tank, the deaerator head includes an upper pipe seat, a standard head of the deaerator head, a water inlet Water pipe, rotary cover of oxygen removal head, upper perforated plate, cylinder body, Raschig ring packing, lower perforated plate and steam inlet pipe, the upper pipe seat is installed at the middle position above the standard head of oxygen There is a steam exhaust port, and there are two lifting lugs on the standard head of the deoxygenation head at both ends of the upper pipe seat. The conical cap and the conical ring are respectively connected by the tie bars, the conical ring is located under the conical cap, the water inlet pipe and the steam inlet pipe are respectively located at the upper position and the lower position of the cylinder body, and the water inlet pipe and the The steam pipes pass through the cylinder and enter the interior of the cylinder. There are multiple pressure gauge ports installed on the right side of the cylinder above the water inlet pipe. On the side, the rotary cover of the oxygen removal head is provided with a manhole for the rotary cover of the oxygen removal head, the upper porous plate and the lower porous plate are located inside the cylinder between the water inlet pipe and the steam inlet pipe, and the upper porous plate Located above the lower perforated plate, the lower part of the upper perforated plate is connected with a shoulder steel ring, and the Raschig ring packing is located inside the cylinder between the upper perforated plate and the lower perforated plate;

The deaerator water tank includes a water tank standard head, a first pipe seat, an auxiliary steam pipe, a cylinder body, a second pipe seat, a third pipe seat, a first connecting pipe, a second connecting pipe, a support, an outlet pipe and a water tank rotation Cover, the standard head of the water tank is installed on the left side of the cylinder body, the rotary cover is installed on the lower left side of the standard head of the water tank, the rotary cover of the water tank is provided with a manhole for the rotary cover of the water tank, and the first pipe seat Including the first upper left socket, the first upper right socket, the first lower left socket and the first lower right socket, the first upper left socket, the first upper right socket, the first lower left socket and the first lower right socket The pipe sockets are respectively located at the two ends of the upper side and the lower side of the cylinder body, the auxiliary steam pipe is installed on the outside of the cylinder body, the second pipe seat is installed on the cylinder body on the right side of the auxiliary steam pipe, and the third The pipe seat is installed on the front of the right side of the cylinder body, the first connecting pipe is installed above and below the right side of the cylinder body, the right side of the first connecting pipe is also connected with a single thread, and the second connecting pipe is installed on the right side of the cylinder body The middle position on the side, the support is installed between the two first pipe seats at the lower end of the cylinder body, the outlet pipe is installed at the middle position below the cylinder body, and the middle position above the cylinder body is provided with a connection port, Both ends of the connecting pipe are provided with reinforcing rings and reinforcing ribs on the cylinder body, and a thermometer bundle joint is provided at the middle of the front of the cylinder body.

As a further solution of the present invention: the left end of the water inlet pipe is provided with a main water inlet and a supplementary water inlet, and the left end of the steam inlet pipe is provided with a main steam inlet.

As a further solution of the present invention: the ends of the upper left first pipe seat, the upper right first pipe seat, the lower left first pipe seat and the lower right first pipe seat are respectively provided with a water return interface, a steam balance port, a sewage outlet and Water balance mouth.

As a further solution of the present invention: an auxiliary steam heating port is provided at the end of the auxiliary steam pipe.

As a further solution of the present invention: the end of the water outlet pipe is provided with a deoxygenated water interface.

As a further solution of the present invention: the thermometer bundle is provided with a thermometer interface.

As a further solution of the present invention: the ends of the first connecting pipe and the second connecting pipe are both provided with a liquid level gauge interface.

As a further solution of the present invention: the end of the second tube base is provided with a motor liquid level regulator interface, and the end of the third tube base is provided with an overflow port.

Compared with prior art, the beneficial effect of the present invention is:

The invention is simple in structure and easy to use. It can not only remove oxygen in water, but also remove carbon dioxide and oxygen in water. The deoxygenation effect is stable and reliable. After deoxygenation, the water does not increase the salt content, and it can sense the temperature in the deoxygenated water tank in real time. In order to control the temperature in the deaeration water tank in time, the work efficiency is improved, the load adaptability is good, the maintenance workload is small, the cost is low, the utility model is suitable for wide use, and has a good application prospect.

Description of drawings

Fig. 1 is a structural front view of the deoxygenation head in the present invention.

Fig. 2 is a top view of the oxygen removal head in the present invention.

Fig. 3 is the front view of the deaerator water tank in the present invention.

Fig. 4 is the left side view of the water tank of the deaerator in the present invention.

detailed description

The technical solution of this patent will be described in further detail below in conjunction with specific embodiments.

Please refer to Fig. 1-4, a thermal deaerator includes a deaerator head and a deaerator water tank, the deaerator head is installed above the deaerator water tank, and the deaerator head includes an upper pipe seat 1, a deaerator Oxygen head standard head 4, water inlet pipe 8, oxygen removal head rotary cover 9, upper perforated plate 11, cylinder 12, Raschig ring packing 13, lower perforated plate 14 and steam inlet pipe 15, the upper pipe seat 1 Installed in the middle position above the standard head 4 of the oxygen removal head, the upper pipe seat 1 is provided with a steam outlet 18, and the standard head 4 of the oxygen removal head at both ends of the upper pipe seat 1 is provided with two lifting lugs 2, The lifting lug 2 is only used for lifting the deaerator head, and shall not be used for lifting the whole deaerator. The standard head 4 of the deaerator head is installed above the cylinder body 12, and the inside of the standard head 4 of the deaerator head passes through The braces 5 are respectively connected with the conical cap 3 and the conical ring 6, the conical ring 6 is located below the conical cap 3, the water inlet pipe 8 and the steam inlet pipe 15 are respectively located at the upper position and the lower position of the cylinder body 12, and The water inlet pipe 8 and the steam inlet pipe 15 all pass through the cylinder body 12 and enter the inside of the cylinder body 12. A plurality of pressure gauge interfaces 7 are installed on the right side of the cylinder body 12 above the water inlet pipe 8. The oxygen head rotary cover 9 is located on the front side of the cylinder body 12 below the water inlet pipe 8. The oxygen removal head rotary cover 9 is provided with a manhole 17 for the oxygen removal head rotary cover. The upper porous plate 11 and the lower porous plate 14 Located inside the cylinder body 12 between the water inlet pipe 8 and the steam inlet pipe 15, the upper porous plate 11 is located above the lower porous plate 14, and the bottom of the upper porous plate 11 is connected with a shoulder steel ring 10, the The Raschig ring packing 13 is positioned at the inside of the cylinder 12 between the upper perforated plate 11 and the lower perforated plate 14, and the Raschig ring packing 13 includes a stainless steel Raschig ring and a packing support assembly; the left end of the water inlet pipe 8 is provided with Main water inlet 19 and supplementary water inlet 20, the left end of the steam inlet pipe 15 is provided with a main steam inlet 21;

The deaerator water tank includes a water tank standard head 101, a first pipe seat 102, an auxiliary steam pipe 103, a cylinder body 104, a second pipe seat 105, a third pipe seat 106, a first connecting pipe 107, a second connecting pipe 108, Support 109, outlet pipe 110 and water tank rotary cover 111, the standard water tank head 101 is installed on the left side of the barrel body 104, the rotary cover 111 is installed on the lower left side of the water tank standard head 101, the first pipe The seat 102 includes the upper left first socket 301, the upper right first socket 302, the lower left first socket 303 and the lower right first socket 304, the upper left first socket 301, the upper right first socket 302, the lower left socket A pipe seat 303 and the lower right first pipe seat 304 are respectively located at both ends of the upper side and the two ends of the lower side of the cylinder body 104, the auxiliary steam pipe 103 is installed on the outside of the cylinder body 104, and the second pipe seat 105 Installed on the barrel 104 on the right side of the auxiliary steam pipe 103, the third pipe seat 106 is installed on the front of the right side of the barrel 104, the first connecting pipe 107 is installed above and below the right side of the barrel 104, the second The right side of a connection pipe 107 is also connected with a single thread 112, the second connection pipe 108 is installed in the middle position on the right side of the cylinder body 104, and the support 109 is installed on the two first pipe seats 102 at the lower end of the cylinder body 104 In between, the outlet pipe 110 is installed at the middle position below the cylinder body 104, and the middle position above the cylinder body 104 is provided with a connection port 113, and the cylinder body 104 at both ends of the connection pipe 113 is provided with a reinforcing ring 114 and reinforcing ribs 115, the middle position of the front of the cylinder body 104 is provided with a thermometer bundle joint 116; the water tank revolving cover 111 is provided with a water tank revolving cover manhole 201, the first upper left pipe seat 301, the first upper right tube The ends of the tube base 302, the first lower left tube base 303 and the lower right first tube base 304 are respectively provided with a water return interface 202, a steam balance port 203, a sewage discharge port 204 and a water balance port 205. The auxiliary steam pipe 103 The end is provided with an auxiliary steam heating port 206, the end of the water outlet pipe 110 is provided with a deoxygenated water interface 207, the thermometer bundle 116 is provided with a thermometer interface, the first connecting pipe 107 and the second connecting pipe 108 The ends are provided with a liquid level gauge interface 208 , the end of the second tube base 105 is provided with a motor liquid level regulator interface 209 , and the end of the third tube base 106 is provided with an overflow port 210 .

According to the water flow direction, the thermal deaerator is divided into an exhaust section, a swirl nozzle, a packing layer, a steam distribution and a deaeration water tank from top to bottom. The softened water enters the water inlet pipe 8 through the pipeline and flows through the nozzle. It comes out with a high-speed jet, then sticks to the inner wall of the tube to form a turbulent rotating water film, rotates down, and finally forms a water film skirt at the outlet of the lower end of the film tube by centrifugal action, fully contacts with the steam, performs heat exchange, condenses into water, and generates energy After disappearing, it turns into water droplets and falls in free fall, which is a first-level deaeration. The deaeration water passes through the Raschig ring packing 13 for deep deaeration, and then gathers in the water tank of the deaerator, and is sent to the boiler. At the same time, the water dissolved in the water Oxygen and other non-condensable gases continuously escape from the water, rise into the exhaust area, and then enter the exhaust pipe through the steam-water separator and are discharged into the atmosphere.

Before the thermal deaerator is officially put into operation, the safety valve should be adjusted. When the internal pressure of the equipment reaches the specified value, the safety valve will automatically open. , remove the dirt and sundries in the pipeline, rinse it off and then close it. In the future, it can be operated irregularly when necessary. Before starting, open the exhaust valve on the upper part of the deaerator and the operation valves of the water level gauges. Other valves are closed. Instrument and thermal control device; adopt the operation mode of water supply first, then air supply, the specific method is to open the inlet water inlet valve, gradually send the inlet water into the deaerator, and when the glass water level gauge on the water tank sees water, turn on the auxiliary steam heating Valve, to heat the water tank, open the main steam valve, gradually send steam to the deaerator, heat and deaerate the inlet water, adjust the internal pressure of the deaerator to the specified value, and the water in the water tank reaches the specified temperature, pay attention to keep the water level in the water tank at In the normal range, when the dissolved oxygen content in the outlet water of the water tank is lower than 30ug/L, water can be supplied to the boiler (if the oxygen content in the outlet water is higher than 30ug/L, the water valve at the lower part of the water tank can be opened to drain water until the oxygen content in the outlet water Reach below 30ug/L) After water supply, it will enter the normal operation state. During the operation of the thermal deaerator, it is necessary to put in the automatic adjustment valve of heating steam to keep the internal operation of the deaerator stable, and the manual heating steam inlet valve is closed. Fixed, the discarded steam volume is generally 1-3% of the inlet water volume. If the deoxygenation pressure exceeds the specified range during operation, check whether the automatic pressure regulator is faulty, whether the regulating valve is flexible, find out the cause and eliminate it, high water level Electric gate valves should be used for drainage. When the water level is high, the water will be automatically opened, and when the water level is low, it should be automatically closed. During operation, the electric water level adjustment system should be checked frequently to see whether the action is flexible. Stability, outlet water oxygen content, output and other data, the deaerator shall not exceed the design pressure and design temperature under any circumstances, and when the deaerator stops within 1 week, the heating steam valve and top exhaust can be slightly opened valve, close other valves, keep the internal pressure of the deaerator at 0.01Mpa, and do thermal protection. When the shutdown time exceeds 1 week, the internal water should be drained, and appropriate measures should be taken to prevent corrosion.

The invention is simple in structure and easy to use. It can not only remove oxygen in water, but also remove carbon dioxide and oxygen in water. The deoxygenation effect is stable and reliable. After deoxygenation, the water does not increase the salt content, and it can sense the temperature in the deoxygenated water tank in real time. In order to control the temperature in the deaeration water tank in time, the work efficiency is improved, the load adaptability is good, the maintenance workload is small, the cost is low, the utility model is suitable for wide use, and has a good application prospect.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge of those of ordinary skill in the art, various implementations can be made without departing from the purpose of this patent. kind of change.

Claims (8)

1. A thermal deaerator, comprising a deaerator head and a deaerator water tank, characterized in that the deaerator head is installed above the deaerator water tank, and the deaerator head includes an upper pipe seat (1), Deaeration head standard head (4), water inlet pipe (8), deaeration head rotary cover (9), upper perforated plate (11), cylinder (12), Raschig ring packing (13), lower perforated plate (14) and the steam inlet pipe (15), the upper pipe seat (1) is installed in the middle position above the standard head (4) of the oxygen removal head, and the upper pipe seat (1) is provided with a steam exhaust port (18) , there are two lifting lugs (2) on the standard head (4) of the oxygen removal head at both ends of the upper pipe seat (1), and the standard head (4) of the oxygen removal head is installed on the cylinder body (12) On the top, the inside of the standard head (4) of the oxygen removal head is respectively connected with the cone cap (3) and the cone ring (6) through the tie bar (5), and the cone ring (6) is located under the cone cap (3), The water inlet pipe (8) and the steam inlet pipe (15) are respectively located above and below the cylinder (12), and the water inlet pipe (8) and the steam inlet pipe (15) both pass through the cylinder (12) Entering the inside of the cylinder (12), the right side of the cylinder (12) above the water inlet pipe (8) is equipped with a plurality of pressure gauge ports (7), and the rotary cover of the oxygen removal head (9 ) is located on the front side of the cylinder (12) below the water inlet pipe (8), the oxygen removal head rotary cover (9) is provided with a manhole (17) for the oxygen removal head rotary cover, and the upper porous plate (11 ) and the lower porous plate (14) are located inside the cylinder (12) between the water inlet pipe (8) and the steam inlet pipe (15), and the upper porous plate (11) is located above the lower porous plate (14) , the lower part of the upper porous plate (11) is connected with a shoulder steel ring (10), and the Raschig ring filler (13) is located in the cylinder (12) between the upper porous plate (11) and the lower porous plate (14). )internal; The deaerator water tank includes a water tank standard head (101), a first pipe seat (102), an auxiliary steam pipe (103), a cylinder body (104), a second pipe seat (105), a third pipe seat (106 ), the first connecting pipe (107), the second connecting pipe (108), the support (109), the outlet pipe (110) and the revolving cover of the water tank (111), the standard head of the water tank (101) is installed on the cylinder body (104 ), the rotary cover (111) is installed on the lower left side of the standard water tank head (101), the rotary cover of the water tank (111) is provided with a manhole (201) for the rotary cover of the water tank, and the first pipe The seat (102) includes the first upper left socket (301), the first upper right socket (302), the first lower left socket (303) and the first lower right socket (304), the first upper left socket ( 301), the first upper right pipe seat (302), the first lower left pipe seat (303) and the first lower right pipe seat (304) are respectively located at the two ends of the upper side and the lower side of the cylinder body (104), so The auxiliary steam pipe (103) is installed on the outside of the cylinder body (104), the second pipe seat (105) is installed on the cylinder body (104) on the right side of the auxiliary steam pipe (103), and the third pipe seat (106) is installed on the front of the cylinder body (104) right side, and the first joint (107) is installed above and below the cylinder body (104) right side, and the right side of the first joint (107) is also connected with a single head thread (112), the second connecting pipe (108) is installed in the middle position on the right side of the cylinder body (104), and the support (109) is installed on the two first pipe seats ( 102), the outlet pipe (110) is installed at the middle position below the cylinder body (104), and the middle position above the cylinder body (104) is provided with a connection port (113), and the connection pipe (113) Reinforcing rings (114) and reinforcing ribs (115) are provided on the cylinder body (104) at both ends, and a thermometer bundle joint (116) is provided at the middle position of the front of the cylinder body (104). 2. The thermal deaerator according to claim 1, characterized in that, the left end of the water inlet pipe (8) is provided with a main water inlet (19) and a supplementary water inlet (20), and the steam inlet pipe ( 15) is provided with a main steam inlet (21) at the left end. 3. The thermal deaerator according to claim 1, characterized in that, the first upper left socket (301), the first upper right socket (302), the first lower left socket (303) and the lower right socket The end of a pipe seat (304) is respectively provided with a water return interface (202), a steam balance port (203), a sewage discharge port (204) and a water balance port (205). 4. The thermal deaerator according to claim 1, characterized in that an auxiliary steam heating port (206) is provided at the end of the auxiliary steam pipe (103). 5. The thermal deaerator according to claim 1, characterized in that, the end of the water outlet pipe (110) is provided with a deoxygenated water interface (207). 6. The thermal deaerator according to claim 1, characterized in that a thermometer interface is provided on the thermometer bundle (116). 7. The thermal deaerator according to claim 1, characterized in that, the ends of the first connecting pipe (107) and the second connecting pipe (108) are both provided with a liquid level gauge interface (208). 8. The thermal deaerator according to claim 1, characterized in that, the end of the second tube base (105) is provided with a motor liquid level regulator interface (209), and the third tube base (106 ) is provided with an overflow port (210).