CN222647700U - Water deaerator - Google Patents

Abstract

The utility model belongs to the technical field of deaerators, and discloses a water deaerator which comprises a deaerator, wherein a water inlet, an air outlet, a heating steam inlet, an auxiliary heating steam inlet and a high-pressure water draining port are formed in the top of the deaerator, a water outlet is formed in the bottom of the deaerator, an overflow port is formed in the middle of the deaerator, a steam cavity is formed in the region which is located above the overflow port and inside the deaerator, a water storage cavity is formed in the region which is located below the overflow port and inside the deaerator, an ejector extending into the steam cavity is arranged in the water inlet, a water baffle plate opposite to the ejector is arranged on the inner wall of the deaerator, the ejector is matched with the water baffle plate to atomize water, an exhaust pipeline is arranged at the outer port of the air outlet, a first steam pipeline is arranged at the inner port of the heating steam inlet, a second steam pipeline is arranged at the inner port of the auxiliary heating steam inlet, and a high-pressure water draining pipeline is arranged at the inner port of the high-pressure water draining port. The water deaerator has the advantages of more compact structure, high heat exchange efficiency, low oxygen content of effluent and reliable use.

Description

Water deaerator

Technical Field

The utility model relates to the technical field of deaerators, in particular to a water deaerator.

Background

At present, a conventional deaerator with deaerating heads is commonly adopted in domestic thermal power plants, and has the types of rotary film type, spray filling type, water-spraying disc type and the like, and the mounting form of the deaerator is provided with two types of vertical deaerating heads and horizontal deaerating heads. The deoxidation process is completed in the deoxidation head, and includes preliminary deoxidation in the spinning film section (spraying layer) to remove most of gas from water, deep deoxidation in the stuffing layer or water spraying disc to remove residual gas from water.

The traditional deaerator is composed of an external deaerator (namely, a rotary film deaerator) and comprises an external deaerator and a water tank, and has the following problems that 1) the water tank is relatively complex in structure, large in size and poor in operation performance, a relatively large installation space is needed, manufacturing and installation costs are relatively high, 2) the deaerator and the water tank are independently composed, the whole equipment is relatively high, split transportation and on-site assembly are needed, the problem that the deaerator is difficult to transport and assemble is solved, 3) the deaerator is complex in internal structure and composed of a rotary film pipe, a filling material, a distribution disc and the like, the failure rate is relatively high, maintenance is inconvenient, 4) good atomization or filming of water cannot be guaranteed during low-load operation, the effect that water is heated by heating steam is poor in gas-water separation effect, and therefore effective deaeration cannot be achieved, 5) the water tank is designed by considering stress and thermal stress caused by the weight of the deaerator the large opening and the steam temperature, the thickness in the water tank is increased, and the steel consumption is increased, and 6) oxygen is discharged, and meanwhile, a large amount of water steam is pushed away, so that energy is seriously wasted.

Disclosure of utility model

Based on the problems, the utility model aims to provide the water deaerator, optimize the structure of the deaerator, improve the integrity and the functionality of equipment and ensure the deaeration efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The water deaerator comprises a deaeration tank, wherein a water inlet, an exhaust port, a heating steam inlet, an auxiliary heating steam port and a high-pressure water draining port are formed in the top of the deaeration tank, a water outlet is formed in the bottom of the deaeration tank, an overflow port is formed in the middle of the deaeration tank, a steam cavity is formed in the deaeration tank and located in an area above the overflow port, and a water storage cavity is formed in the deaeration tank and located in an area below the overflow port;

An ejector extending into the steam cavity is arranged in the water inlet, a water baffle right opposite to the ejector is arranged on the inner wall of the deoxidizing tank, and the ejector is matched with the water baffle to atomize water;

the exhaust port is positioned at one side or two sides of the water inlet, and an exhaust pipeline is arranged at the outer port of the exhaust port;

the inner end of the heating steam inlet is provided with a first steam pipeline extending to the water storage cavity, and the first steam pipeline is used for carrying out mixed heat transfer on water in the water storage cavity so that the water can quickly reach the saturation temperature under the working pressure;

The inner end of the auxiliary heating steam port is provided with a second steam pipeline extending to the water storage cavity, and the second steam pipeline is used for increasing the partial pressure of steam in the steam cavity so as to promote the gas dissolved in water to escape;

the inner end of the high water-adding and draining port is provided with a high water-adding and draining pipeline extending to the water storage cavity, and the high water-adding and draining pipeline is used for promoting the separation of water and gas in the water storage cavity.

As an alternative scheme, the sprayer includes the hydroecium, and the upper end and the water inlet intercommunication of hydroecium, and a plurality of water outlet ring and an end plate have been overlapped in proper order to the lower extreme of hydroecium, and the end plate passes through the bolt fastening with the hydroecium, and the end plate seals the lower extreme of hydroecium, and the annular distributes on every water outlet ring has a plurality of water spray holes, is provided with the filter screen between hydroecium and each water spray hole, and the filter screen is fixed by the bolt, and the surface of water outlet ring is provided with the nozzle with one or more water spray hole intercommunication.

As an alternative, the nozzle comprises a plurality of pairs of annular sheets, each pair of annular sheets comprises two elastic fins which are abutted against each other, a closed cavity communicated with all water spraying holes of one water outlet ring is formed between the two elastic fins, and when the pressure in the closed cavity reaches a set value, the two elastic fins are separated.

As an alternative scheme, be provided with the step profile of mutual buckle on hydroecium, the water outlet circle, the end plate respectively, elastic fin presss from both sides and locates between the step profile of hydroecium and the step profile of water outlet circle, between the step profile of two adjacent water outlet circles or between the step profile of water outlet circle and the step profile of end plate.

As an alternative, the elastic fin is provided with a plurality of engaging portions in the radial direction, and the engaging portions divide the closed cavity into a plurality of cavities.

As an alternative scheme, exhaust pipeline includes exhaust main pipe, exhaust branch pipe and discharge valve, and exhaust main pipe slope is arranged, and the high-order end of exhaust main pipe is the end of giving vent to anger, and the low-order end of exhaust main pipe is provided with the hydrophobic pipe, and the inlet end and the gas vent intercommunication of discharge valve, the end of giving vent to anger of discharge valve and the lower extreme intercommunication of exhaust branch pipe, and be provided with the orifice plate between discharge valve and the exhaust branch pipe, and the upper end of exhaust branch pipe stretches into the middle part of exhaust main pipe, and the upper end of exhaust branch pipe personally submits the inclined plane opposite with the slope direction of exhaust main pipe.

As an alternative, the first steam pipeline comprises a first vertical connecting pipe, the upper end of the first vertical connecting pipe is communicated with the heating steam inlet, the lower end of the first vertical connecting pipe extends to the bottom close to the deoxidizing tank and is provided with a first transverse connecting pipe, the first transverse connecting pipe is distributed and fixed along the bottom of the deoxidizing tank through a first bracket, and a plurality of first open-pore pipes are axially arranged on the first transverse connecting pipe.

As an alternative, the second steam pipeline includes the second vertical takeover that is linked together with auxiliary heating steam mouth, is provided with the horizontal takeover of second on the vertical takeover of second, and the horizontal takeover of second is arranged and is fixed along the top of deoxidization jar through the second support, is provided with a plurality of second open hole pipe along its axial on the horizontal takeover of second, and the lower extreme of second open hole pipe extends to the bottom that is close to the deoxidization jar.

As an alternative, the high-pressure drainage pipeline comprises a third vertical connecting pipe communicated with the high-pressure drainage port, the lower end of the third vertical connecting pipe extends to the bottom close to the deoxidizing tank and extends out of a third transverse connecting pipe along the bottom of the deoxidizing tank, the third transverse connecting pipe is fixed with the deoxidizing tank through a third bracket, and a plurality of perforations are uniformly formed in the upper half pipe wall of the third transverse connecting pipe.

As an alternative scheme, the deoxidization jar is the horizontal jar, and the both ends of deoxidization jar are provided with the head respectively, are provided with the manhole on the head, and the top of deoxidization jar still is provided with two vapour balance mouths, and two vapour balance mouths pass through the balanced valve intercommunication with heating steam import and auxiliary heating steam mouth respectively, and the bottom of deoxidization jar still is provided with drain port and water balance mouth.

The water deaerator has the beneficial effects that the water deaerator is provided with the plurality of deaerator interfaces and the internal functional pipelines, water is heated by steam, the partial pressure of the steam on the water surface is gradually increased, the partial pressure of dissolved gas is gradually reduced, the gas dissolved in the water continuously escapes, the built-in structure is more compact, the heat exchange efficiency is high, the oxygen content of the effluent is low, and the use is reliable.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a water deaerator provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of an ejector according to an embodiment of the present utility model;

FIG. 3 is an enlarged view at A of FIG. 2;

fig. 4 is a schematic structural view of an exhaust pipe according to an embodiment of the present utility model.

In the accompanying drawings:

100. The device comprises an deoxidizing tank, 101, a water inlet, 102, an exhaust port, 103, a heating steam inlet, 104, an auxiliary heating steam port, 105, a high-pressure drain port, 106, a water outlet, 107, an overflow port, 108, a manhole, 109, a steam balance port, 110, a balance valve, 111, a water drain port, 112 and a water balance port;

200. The injector, 210, the water chamber, 220, the water outlet ring, 221, the water spraying hole, 230, the end plate, 240, the bolt, 250, the filter screen, 260, the nozzle, 261, the elastic fin, 262, the closed cavity, 263, the engaging part, 270 and the step profile;

300. a water baffle;

400. Exhaust pipeline 410, exhaust main pipe 420, exhaust branch pipe 421, inclined plane 430, exhaust valve 440, drain pipe 450, throttle plate;

500. a first steam line; 510, first vertical connecting pipes, 520, first transverse connecting pipes, 530, first brackets, 540, first open-hole pipes;

600. The second steam pipeline, 610, the second vertical connecting pipe, 620, the second transverse connecting pipe, 630, the second bracket, 640, the second open hole pipe;

700. High-pressure drainage pipeline, 710 parts of third vertical connecting pipes, 720 parts of third transverse connecting pipes, 721 parts of perforations, 730 parts of third brackets.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1 to 4, the preferred embodiment provides a water deaerator, which comprises a deaerating tank 100, wherein a water inlet 101, an air outlet 102, a heating steam inlet 103, an auxiliary heating steam port 104 and a high-pressure water drain port 105 are arranged at the top of the deaerating tank 100, a water outlet 106 is arranged at the bottom of the deaerating tank 100, an overflow port 107 is arranged at the middle of the deaerating tank 100, a steam cavity is arranged in the deaerating tank 100 and above the overflow port 107, and a water storage cavity is arranged in the deaerating tank 100 and below the overflow port 107.

Wherein, the water inlet 101 is provided with an ejector 200 extending into the steam cavity, the inner wall of the deoxidizing tank 100 is provided with a water baffle 300 opposite to the ejector 200, and the ejector 200 is matched with the water baffle 300 to atomize water;

The exhaust port 102 is positioned at one side or two sides of the water inlet 101, and an exhaust pipeline 400 is arranged at the outer port of the exhaust port 102;

The inner end of the heating steam inlet 103 is provided with a first steam pipeline 500 extending to the water storage cavity, and the first steam pipeline 500 is used for carrying out mixed heat transfer on water in the water storage cavity so that the water can quickly reach the saturation temperature under the working pressure;

The inner end of the auxiliary heating steam port 104 is provided with a second steam pipeline 600 extending to the water storage cavity, and the second steam pipeline 600 is used for increasing the partial pressure of steam in the steam cavity so as to promote the gas dissolved in water to escape;

The inner end of the high-pressure drain port 105 is provided with a high-pressure drain pipe 700 extending to the water storage chamber, and the high-pressure drain pipe 700 is used for promoting the separation of water and gas in the water storage chamber.

Therefore, the water deaerator is provided with a plurality of deaerator 100 interfaces and internal functional pipelines, water is heated by steam, the partial pressure of the steam on the water surface is gradually increased, the partial pressure of dissolved gas is gradually reduced, and then the gas dissolved in the water continuously escapes, so that the deaerator is more compact in built-in structure, high in heat exchange efficiency, low in oxygen content of the discharged water and reliable in use.

Specifically, referring to fig. 2 and 3 in detail, the injector 200 includes a water chamber 210, an upper end of the water chamber 210 is communicated with a water inlet 101, a plurality of water outlet rings 220 and an end plate 230 are sequentially stacked at a lower end of the water chamber 210, the end plate 230 is fixedly connected with the water chamber 210 through bolts 240, the end plate 230 seals the lower end of the water chamber 210, a plurality of water spray holes 221 are circumferentially distributed on each water outlet ring 220, a filter screen 250 is arranged between the water chamber 210 and each water spray hole 221, the filter screen 250 is fixed by the bolts 240, and a nozzle 260 communicated with one or more water spray holes 221 is arranged at an outer surface of the water outlet ring 220. The number of water outlet rings 220 can be increased or decreased as desired, and the number of nozzles 260 can be increased or decreased accordingly.

Further, the nozzle 260 herein adopts a butterfly structure, and specifically includes a plurality of pairs of annular sheets, each pair of annular sheets includes two elastic fins 261 abutting against each other, a closed cavity 262 communicating with all water spraying holes 221 of one water outlet ring 220 is formed between the two elastic fins 261, and when the pressure in the closed cavity 262 reaches a set value, the two elastic fins 261 are separated. Thus, the condensed water flows into the water chamber 210 through the water inlet 101, is filtered by the filter screen 250, and is separated from the two elastic fins 261 of each pair of annular sheets under the action of water pressure, and the condensed water is sprayed from inside to outside, thereby forming water mist.

In particular, the water chamber 210, the water outlet ring 220 and the end plate 230 are respectively provided with mutually buckled step profiles 270, and the elastic fins 261 are clamped between the step profiles 270 of the water chamber 210 and the step profiles 270 of the water outlet ring 220, between the step profiles 270 of two adjacent water outlet rings 220 or between the step profiles 270 of the water outlet rings 220 and the step profiles 270 of the end plate 230, so that the reliable fixation of each elastic fin 261 is ensured without other fasteners.

Further, the elastic fin 261 is provided with a plurality of engaging portions 263 along the radial direction, and the engaging portions 263 divide the closed cavity 262 into a plurality of cavities, so that the injection trigger pressure can be designed, and the atomization effect is enhanced.

Specifically, referring to fig. 4 in detail, the exhaust pipeline 400 includes an exhaust main pipe 410, an exhaust branch pipe 420 and an exhaust valve 430, wherein the exhaust main pipe 410 is obliquely arranged, the high end of the exhaust main pipe 410 is an air outlet end, the low end of the exhaust main pipe 410 is provided with a drain pipe 440, the air inlet end of the exhaust valve 430 is communicated with the exhaust port 102, the air outlet end of the exhaust valve 430 is communicated with the lower end of the exhaust branch pipe 420, an orifice plate 450 is arranged between the exhaust valve 430 and the exhaust branch pipe 420, the upper end of the exhaust branch pipe 420 extends into the middle of the exhaust main pipe 410, and the upper end of the exhaust branch pipe 420 is provided with an inclined surface 421 opposite to the oblique direction of the exhaust main pipe 410.

Preferably, the exhaust main pipe 410 is arranged obliquely by 10 degrees, and the upper end of the exhaust branch pipe 420 stretches into the exhaust main pipe 410 by about 15mm, so that water vapor in the exhaust is prevented from flowing back to the exhaust branch pipe 420.

Specifically, referring to fig. 1 in detail, the first steam pipe 500 herein includes a first vertical connection pipe 510, an upper end of the first vertical connection pipe 510 is communicated with the heating steam inlet 103, a lower end of the first vertical connection pipe 510 extends to be close to a bottom of the deoxidizing tank 100 and is provided with a first transverse connection pipe 520, the first transverse connection pipe 520 is arranged and fixed along the bottom of the deoxidizing tank 100 through a first bracket 530, and a plurality of first open-hole pipes 540 are arranged on the first transverse connection pipe 520 along an axial direction thereof.

Therefore, the heating steam enters the first vertical connecting pipe 510 and is discharged from the through hole of the first open-hole pipe 540 on the first transverse connecting pipe 520, when the water is heated to the boiling temperature under the corresponding pressure, the water does not have the capability of dissolving gas, namely, the gas (including oxygen) dissolved in the water can be removed, the steam discharged by the first steam pipeline 500 of the structure has good uniformity, more reasonable arrangement and high heat exchange efficiency.

Specifically, referring to fig. 1 in detail, the second steam pipe 600 includes a second vertical connection pipe 610 communicating with the auxiliary heating steam port 104, a second transverse connection pipe 620 is disposed on the second vertical connection pipe 610, the second transverse connection pipe 620 is arranged and fixed along the top of the deoxidizing tank 100 through a second bracket 630, a plurality of second open pipes 640 are disposed on the second transverse connection pipe 620 along the axial direction thereof, and the lower ends of the second open pipes 640 extend to near the bottom of the deoxidizing tank 100.

Thus, steam enters from the second vertical connection pipe 610 and is discharged from the through holes of the second open hole pipe 640 on the second transverse connection pipe 620, so that the temperature in the steam cavity is heated, the partial pressure of the steam is increased, and the water temperature can be increased in an auxiliary manner.

The amount of gas dissolved in water is mainly determined by two aspects, on the one hand in direct proportion to the partial pressure of the gas on the water surface (i.e. the higher the pressure the greater the solubility of the gas in water and vice versa) and on the other hand in relation to the temperature of the water (i.e. the higher the temperature of the water the less the solubility of the gas in water, the solubility of the gas in water being zero when the temperature is the saturation temperature at the corresponding operating pressure).

The first steam line 500 heats water mainly by steam to raise the temperature of the water, and the second steam line 600 increases the partial pressure of the steam on the water surface mainly and decreases the partial pressure of the dissolved gas gradually. When the water is heated to the saturation temperature at the corresponding pressure, all water vapor is present on the water surface, the partial pressure of the dissolved gas is zero, and the water no longer has the capacity to dissolve gas, i.e. the gas dissolved in the water, including oxygen, can be removed. Therefore, the first steam pipeline 500 and the second steam pipeline 600 are matched for use, the working efficiency is high, and the deoxidization effect is obvious.

Specifically, referring to fig. 1 in detail, the high-pressure drain pipe 700 includes a third vertical connection pipe 710 communicated with the high-pressure drain port 105, a lower end of the third vertical connection pipe 710 extends to be close to the bottom of the deoxygenation tank 100 and extends to form a third transverse connection pipe 720 along the bottom of the deoxygenation tank 100, the third transverse connection pipe 720 is fixed with the deoxygenation tank 100 through a third bracket 730, and a plurality of perforations 721 are uniformly formed on an upper half pipe wall of the third transverse connection pipe 720.

Therefore, the high-water-adding and draining water and water generate a severe mixed heating effect on a very short stroke, the water temperature is greatly improved, and the gas and impurities in the water are effectively removed.

In addition, the deoxidizing tank 100 is preferably a horizontal tank, two ends of the deoxidizing tank 100 are respectively provided with a sealing head, a manhole 108 is arranged on the sealing head, the top of the deoxidizing tank 100 is also provided with two steam balance ports 109, the two steam balance ports 109 are respectively communicated with the heating steam inlet 103 and the auxiliary heating steam port 104 through balance valves 110, the bottom of the deoxidizing tank 100 is also provided with a water drain port 111 and a water balance port 112, water and steam balance in the deoxidizing tank 100 is maintained, and reliable operation is ensured.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The water deaerator is characterized by comprising a deaerator (100), wherein a water inlet (101), an exhaust port (102), a heating steam inlet (103), an auxiliary heating steam port (104) and a high-heating drain port (105) are arranged at the top of the deaerator (100), a water outlet (106) is arranged at the bottom of the deaerator (100), an overflow port (107) is arranged in the middle of the deaerator (100), a steam cavity is arranged in the deaerator (100) and above the overflow port (107), a water storage cavity is arranged in the deaerator (100) and below the overflow port (107),

An ejector (200) extending into the steam cavity is arranged in the water inlet (101), a water baffle (300) opposite to the ejector (200) is arranged on the inner wall of the deoxidizing tank (100), and the ejector (200) is matched with the water baffle (300) to atomize water;

The exhaust port (102) is positioned at one side or two sides of the water inlet (101), and an exhaust pipeline (400) is arranged at the outer port of the exhaust port (102);

The inner end of the heating steam inlet (103) is provided with a first steam pipeline (500) extending to the water storage cavity, and the first steam pipeline (500) is used for carrying out mixed heat transfer on water in the water storage cavity so as to enable the water to quickly reach the saturation temperature under the working pressure;

The inner end of the auxiliary heating steam port (104) is provided with a second steam pipeline (600) extending to the water storage cavity, and the second steam pipeline (600) is used for increasing the partial pressure of steam in the steam cavity so as to promote the gas dissolved in water to escape;

The inner port of the high-pressure drain port (105) is provided with a high-pressure drain pipeline (700) extending to the water storage cavity, and the high-pressure drain pipeline (700) is used for promoting the separation of water and gas in the water storage cavity.

2. The water deaerator according to claim 1, wherein the injector (200) comprises a water chamber (210), the upper end of the water chamber (210) is communicated with the water inlet (101), a plurality of water outlet rings (220) and an end plate (230) are sequentially stacked at the lower end of the water chamber (210), the end plate (230) is fixedly connected with the water chamber (210) through bolts (240), the end plate (230) seals the lower end of the water chamber (210), a plurality of water spray holes (221) are circumferentially distributed on each water outlet ring (220), a filter screen (250) is arranged between the water chamber (210) and each water spray hole (221), the filter screen (250) is fixed by the bolts (240), and a nozzle (260) communicated with one or more water spray holes (221) is arranged on the outer surface of the water outlet ring (220).

3. The water deaerator according to claim 2, characterized in that the nozzle (260) comprises several pairs of annular flaps, each pair comprising two mutually abutting elastic fins (261), between which two elastic fins (261) a closed chamber (262) is formed, which communicates with all water spray holes (221) of one water outlet ring (220), and when the pressure in the closed chamber (262) reaches a set value, the two elastic fins (261) are separated.

4. A water deaerator according to claim 3, characterized in that the water chamber (210), the water outlet ring (220) and the end plate (230) are respectively provided with mutually buckled step profiles (270), and the elastic fin (261) is clamped between the step profile (270) of the water chamber (210) and the step profile (270) of the water outlet ring (220), between the step profiles (270) of two adjacent water outlet rings (220) or between the step profile (270) of the water outlet ring (220) and the step profile (270) of the end plate (230).

5. A water deaerator according to claim 3, characterized in that the elastic fins (261) are radially provided with a number of snap-in parts (263), which snap-in parts (263) divide the closed cavity (262) into a number of mould cavities.

6. The water deaerator according to claim 1, characterized in that the exhaust pipeline (400) comprises an exhaust main pipe (410), an exhaust branch pipe (420) and an exhaust valve (430), the exhaust main pipe (410) is obliquely arranged, the high-order end of the exhaust main pipe (410) is an air outlet end, the low-order end of the exhaust main pipe (410) is provided with a drain pipe (440), the air inlet end of the exhaust valve (430) is communicated with the exhaust port (102), the air outlet end of the exhaust valve (430) is communicated with the lower end of the exhaust branch pipe (420), an orifice plate (450) is arranged between the exhaust valve (430) and the exhaust branch pipe (420), the upper end of the exhaust branch pipe (420) stretches into the middle part of the exhaust main pipe (410), and the upper end of the exhaust branch pipe (420) is an inclined surface (421) opposite to the inclined direction of the exhaust main pipe (410).

7. The water deaerator according to claim 1, characterized in that the first steam pipe (500) comprises a first vertical connection pipe (510), an upper end of the first vertical connection pipe (510) is communicated with the heating steam inlet (103), a lower end of the first vertical connection pipe (510) extends to be close to the bottom of the deaeration tank (100) and is provided with a first transverse connection pipe (520), the first transverse connection pipe (520) is distributed and fixed along the bottom of the deaeration tank (100) through a first bracket (530), and a plurality of first open holes pipes (540) are arranged on the first transverse connection pipe (520) along the axial direction of the first transverse connection pipe.

8. The water deaerator according to claim 1, characterized in that the second steam pipe (600) comprises a second vertical connection pipe (610) communicated with the auxiliary heating steam port (104), a second transverse connection pipe (620) is arranged and fixed along the top of the deaeration tank (100) through a second bracket (630) on the second vertical connection pipe (610), a plurality of second open-hole pipes (640) are arranged on the second transverse connection pipe (620) along the axial direction of the second open-hole pipes, and the lower ends of the second open-hole pipes (640) extend to be close to the bottom of the deaeration tank (100).

9. The water deaerator according to claim 1, characterized in that the high-pressure drain pipeline (700) comprises a third vertical connecting pipe (710) communicated with the high-pressure drain port (105), the lower end of the third vertical connecting pipe (710) extends to be close to the bottom of the deaeration tank (100) and extends to form a third transverse connecting pipe (720) along the bottom of the deaeration tank (100), the third transverse connecting pipe (720) is fixed with the deaeration tank (100) through a third bracket (730), and a plurality of perforations (721) are uniformly formed in the upper half pipe wall of the third transverse connecting pipe (720).

10. The water deaerator according to claim 1, wherein the deaerating tank (100) is a horizontal tank, two ends of the deaerating tank (100) are respectively provided with a sealing head, a manhole (108) is arranged on the sealing head, two steam balance ports (109) are further arranged at the top of the deaerating tank (100), the two steam balance ports (109) are respectively communicated with the heating steam inlet (103) and the auxiliary heating steam port (104) through balance valves (110), and a water outlet (111) and a water balance port (112) are further arranged at the bottom of the deaerating tank (100).