CN212988063U - Condenser hot well deoxidization backheat system and condenser - Google Patents

Abstract

The utility model provides a condenser hot-well deoxidization regenerative system and condenser, condenser hot-well deoxidization regenerative system includes: the hot well of low back pressure side, high back pressure side hot well and hot well communicating pipe, the top of high back pressure side hot well is provided with deaerator, deaerator includes the trickle, reposition of redundant personnel layer and packing layer, wherein, the one end of hot well communicating pipe and the hot well intercommunication of low back pressure side, the other end and trickle intercommunication, the reposition of redundant personnel layer is located the below of trickle, the packing layer is located the below on reposition of redundant personnel layer, make the condensate water of low back pressure side hot well flow into the trickle through hot well communicating pipe, and fall into high back pressure side hot well behind reposition of redundant personnel layer and packing layer in proper order. The utility model discloses a water drenching pipe is tentatively to the moisture of condensing, again through the reposition of redundant personnel layer to the moisture of condensing divide, advances the packing layer again at last to the moisture of condensing divide, condensate water flow evenly distributed for the heating condensate that exhaust steam can be more abundant, gaseous diffusion is appeared with higher speed, has guaranteed the deoxidization effect of condensate.

Description

Condenser hot well deoxidization backheat system and condenser

Technical Field

The utility model relates to a condenser field particularly, relates to a condenser hot-well deoxidization backheating system and a condenser.

Background

The double-backpressure condenser has improved the heat transfer end difference relative to the single-backpressure condenser, and required area is less under the equal design condition, and under the condition that the area equals, the average backpressure of double-backpressure condenser is lower than the single-backpressure condenser, has improved unit economy, at present the wide application in the power plant.

The gas in the condensed water is separated out from the water, and has two basic forms: one is the gas escaping from the water in small bubbles, and the other is the diffusion of gas molecules out of the water. Tests have shown that most of the gas can be rapidly evolved in the form of bubbles when heated against condensation water at a temperature much lower than the saturation temperature. However, when the condensed water is heated to near or at the saturation temperature, a small portion of the gas remaining is prevented from escaping by the surface tension and viscous forces of the water and gradually evolves only slowly in a diffuse manner.

The high-back pressure side pressure difference and the low-back pressure side pressure difference of a double-back-pressure condenser in the operation of the existing unit are usually more than 1kPa, the summer working condition (TRL) pressure difference can reach 3kPa, the temperature difference of condensed water on the high-back pressure side and the low-back pressure side can reach 5 ℃, the condensed water in the high-back pressure side heat well is directly discharged into the low-back pressure side heat well to be mixed, the temperature of the condensed water in the high-back pressure side heat well can be reduced, the supercooling degree of the condensed water on the high-back pressure side can reach 2-3 ℃, the dissolved oxygen in the condensed.

Therefore, how to accelerate the diffusion and precipitation of the gas and reduce the oxygen content of the condensed water becomes a technical problem to be solved in the field.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a condenser hot-well deoxidization backheat system for solve the problem that the condensate water oxygen content that has got into high back pressure side hot-well now is high.

In order to solve the technical problem, the utility model adopts the following basic concept:

the utility model provides a condenser hot-well deoxidization backheat system, include: the low back pressure side hot well, the high back pressure side hot well and the hot well communicating pipe, a deoxidizing device is arranged above the high back pressure side hot well, the deoxidizing device comprises a water spraying pipe, a flow distribution layer and a packing layer,

one end of the hot well communicating pipe is communicated with the low-backpressure side hot well, the other end of the hot well communicating pipe is communicated with the water spraying pipe, the diversion layer is positioned below the water spraying pipe, and the packing layer is positioned below the diversion layer, so that condensed water of the low-backpressure side hot well flows into the water spraying pipe through the hot well communicating pipe and sequentially passes through the diversion layer and the packing layer and then falls into the high-backpressure side hot well.

In the above technical scheme, the flow distribution layer includes a flow distribution plate, the flow distribution plate is provided with a plurality of flow distribution holes, wherein the edge of the flow distribution plate is provided with a flow blocking wall.

In the above technical scheme, along the length direction of the flow distribution plate, the flow blocking walls are respectively arranged on two opposite sides of the flow distribution plate, the flow distribution plate and the flow blocking walls jointly define a groove structure with an opening above, and at least part of the water spraying pipe extends into the groove structure.

In any of the above technical solutions, the flow distribution plate is in a concave-convex shape, wherein the flow distribution holes are respectively formed in the convex portion and/or the concave portion of the flow distribution plate.

In any of the above technical solutions, the packing layer includes a container, and stainless steel corrugated packing is contained in the container.

In any of the above technical solutions, the high back pressure side heat well has a plurality of the shower pipes, the plurality of the shower pipes are distributed side by side and at intervals, and the diversion layer and the packing layer corresponding to each of the shower pipes are arranged below each of the shower pipes, wherein a steam channel is formed between adjacent shower pipes, and/or a steam channel is formed between the shower pipe and the diversion layer, and/or a steam channel is formed between the diversion layer and the packing layer.

In any one of the above technical solutions, the deaerating plant has an installation net rack, the installation net rack has an installation frame body, be equipped with horizontal support piece, vertical support piece and vertical support piece in the installation frame body, wherein vertical support piece's below is provided with reposition of redundant personnel layer backup pad and packing layer backup pad, the reposition of redundant personnel layer install in the reposition of redundant personnel layer backup pad, the packing layer install in the packing layer backup pad.

In any of the above technical solutions, the intermediate partition plate is disposed in the high back pressure side heat well, and the packing layer is lapped on the intermediate partition plate.

In any of the above technical solutions, the method further includes: and the water drainage pipe is arranged in the high back pressure side heat well, and a water inlet of the water drainage pipe faces to one side away from the oxygen removal device.

The present invention also provides a condenser, comprising: according to any one of the technical schemes, the condenser hot well oxygen-removing and heat-returning system is provided.

The utility model discloses in, the condensate water in the hot well of low back pressure side passes through hot well communicating pipe flow direction trickle pipe, and the trickle pipe has been arranged for the bottom and has been drenched the body in hole, and the condensate water freely falls to the reposition of redundant personnel layer through a plurality of trickle holes of trickle pipe, disperses through reposition of redundant personnel layer evenly distributed to extension exhaust steam and condensate contact area and contact time, the condensate water that disperses through the reposition of redundant personnel layer freely falls into the packing layer of reposition of redundant personnel layer lower part, and the condensate water is opened through the further homodisperse of packing. The condensed water and the exhaust steam which flows upwards in a reverse flow manner are fully contacted, the exhaust steam at the high pressure side is higher than that at the low pressure side, the exhaust steam with higher temperature regenerates the condensed water, oxygen in the condensed water is fully diffused and released, the deoxidizing effect of the condensed water is ensured, and the circulating heat efficiency is improved.

The utility model discloses a water spray pipe is tentatively to the condensate reposition of redundant personnel, again through the reposition of redundant personnel layer to the condensate reposition of redundant personnel, advances the packing layer at last and again to the condensate reposition of redundant personnel, forms the effect of tertiary reposition of redundant personnel for the condensate forms vaporific, breaks into drop or water membrance, condensate rivers evenly distributed. And the three-level flow distribution sequentially forms a deceleration effect on the condensed water, so that the contact time of the exhaust steam and the condensed water is prolonged, the exhaust steam can more fully heat the condensed water, the diffusion and the separation of gas are accelerated, and the deoxidization effect of the condensed water is ensured.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic cross-sectional view of a partial structure of a condenser hot well oxygen-removing regenerative system according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of B-B of FIG. 1;

fig. 4 is a schematic perspective view of a condenser hot well oxygen-removing heat-returning system according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a deaerating device according to an embodiment of the present invention;

FIG. 6 is a partial enlarged view of the portion C of FIG. 5;

fig. 7 is a schematic top view of a condenser hot well oxygen removal and heat recovery system according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of D-D in FIG. 7;

FIG. 9 is an enlarged partial view of section E of FIG. 8;

fig. 10 is a schematic side view of a diverter layer according to an embodiment of the present invention;

fig. 11 is a schematic top view of a condenser according to an embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view of F-F in FIG. 11;

fig. 13 is a schematic cross-sectional view of a condenser according to an embodiment of the present invention;

fig. 14 is a schematic cross-sectional structure diagram of the tube sheet according to an embodiment of the present invention.

In the figure: 100. a condenser hot well oxygen removal heat recovery system; 110. a low back pressure side heat well; 120. a high back pressure side hot well; 130. a hot well communication pipe; 140. a deaerator; 141. a water spraying pipe; 142. a shunt layer; 1421. A flow distribution plate; 1422. a shunt hole; 1423. a flow blocking wall; 1424. an opening; 143. a filler layer; 144. A steam channel; 145. installing a net rack; 1451. installing a frame body; 1452. a transverse support; 1453. a longitudinal support; 1454. a vertical support; 1455. a shunting layer support plate; 1456. a packing layer support plate; 1457. Supporting angle steel; 146. a middle partition plate; 147. a drain pipe; 1471. a water inlet; 200. a condenser; 210. a water inlet chamber and a water outlet chamber; 220. a cooling tube; 230. a tube sheet; 231. a middle support plate; 232. an end tube plate; 240. an air extraction pipeline; 250. returning to the water chamber; 260. a gas baffle; x1, cooling tube centerline; x2, condenser centerline.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to examples.

Example one

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a condenser hot well deoxidization backheating system 100, condenser hot well deoxidization backheating system 100 includes low back pressure side hot well 110, high back pressure side hot well 120, hot well communicating pipe 130 and deoxidization apparatus 140.

Specifically, a deaerator 140 is arranged above the high-back-pressure side heat well 120, the deaerator 140 includes a water spraying pipe 141, a diversion layer 142 and a packing layer 143, wherein one end of the heat well communication pipe 130 is communicated with the low-back-pressure side heat well 110, the other end of the heat well communication pipe is communicated with the water spraying pipe 141, the diversion layer 142 is located below the water spraying pipe 141, and the packing layer 143 is located below the diversion layer 142, so that condensed water of the low-back-pressure side heat well 110 flows into the water spraying pipe 141 through the heat well communication pipe 130, and then flows into the high-back-pressure side heat well 120 after sequentially passing through the diversion layer 142 and the packing layer 143.

In this embodiment, the condensate in the low back pressure side hot well 110 flows to the shower pipe 141 through the hot well communicating pipe 130, the shower pipe 141 has arranged the body of the hole that drenches for the bottom, the condensate freely falls to the diffluence layer 142 through a plurality of holes of the shower pipe 141, scatter through the uniform distribution of the diffluence layer 142, thereby extension exhaust steam and condensate contact area and contact time, the condensate that scatters through the diffluence layer 142 freely falls into the packing layer 143 of the diffluence layer 142 lower part, the condensate is opened through further uniform dispersion of packing. The condensed water and the exhaust steam which flows upwards in a reverse flow manner are fully contacted, the exhaust steam at the high pressure side is higher than that at the low pressure side, the exhaust steam with higher temperature regenerates the condensed water, oxygen in the condensed water is fully diffused and released, the deoxidizing effect of the condensed water is ensured, and the circulating heat efficiency is improved.

As shown in fig. 4 and 5, in the present embodiment, the condensed water is primarily divided by the water spraying pipe 141, is again divided by the flow dividing layer 142, and finally is again divided by the packing layer 143, so as to form a three-stage flow dividing effect, so that the condensed water is atomized, broken into a drop shape or a water film shape, and the flow of the condensed water is uniformly distributed. And the three-level flow distribution sequentially forms a deceleration effect on the condensed water, so that the contact time of the exhaust steam and the condensed water is prolonged, the exhaust steam can more fully heat the condensed water, the diffusion and the separation of gas are accelerated, and the deoxidization effect of the condensed water is ensured.

In some embodiments, the water shower 141 is located above the shunt layer 142, and a projection of the water shower 141 on a plane where the shunt layer 142 is located within the shunt layer 142.

In some embodiments, diverter layer 142 is positioned above packing layer 143 and the projection of diverter layer 142 onto the plane of packing layer 143 is coincident with packing layer 143 or the projection of diverter layer 142 onto the plane of packing layer 143 is within packing layer 143.

This can effectively ensure that the diversion layer 142 receives the condensed water discharged from the shower pipe 141 and that the packing layer 143 receives the condensed water discharged from the diversion layer 142.

Example two

As shown in fig. 7, 9 and 10, in addition to the technical features of the above embodiments, the present embodiment further defines: the shunting layer 142 includes a shunting plate 1421, a plurality of shunting holes 1422 are disposed on the shunting plate 1421, wherein a flow blocking wall 1423 is disposed on an edge of the shunting plate 1421.

In this embodiment, set up the reposition of redundant personnel layer 142 and be flow distribution plate 1421, be equipped with a plurality of reposition of redundant personnel holes 1422 on flow distribution plate 1421, like this, simple structure, processing convenience are favorable to reduction in production cost and reduce the transformation degree of difficulty, reduce repacking cost, the popularization in the market of being convenient for. And the edge of the flow dividing plate 1421 is provided with a flow blocking wall 1423, and the flow blocking wall 1423 is used to block the water flow, so that the situation that the condensed water directly falls along the edge of the flow dividing plate 1421 without being divided by the flow dividing holes 1422 on the flow dividing plate 1421 is avoided, the condensed water can be fully divided by the flow dividing plate 1421, the falling speed of the condensed water is reduced, and the contact time of the condensed water and the exhaust steam flowing upwards reversely is prolonged.

In some embodiments, the flow dividing plate 1421 and the flow blocking wall 1423 are a split structure, wherein the flow blocking wall 1423 is detachably mounted on the flow dividing plate 1421 by screws, bolts, clamping, plugging, and the like. Therefore, the baffle wall 1423 can be detached, and workers can replace the baffle wall 1423 with different specifications according to specific application scenes.

Of course, in other embodiments, the dividing plate 1421 and the baffle wall 1423 may also be a single structure, for example, the baffle wall 1423 is welded to the dividing plate 1421, or the baffle wall 1423 and the dividing plate 1421 are a single structure. Thus, the installation step of the baffle wall 1423 is omitted, the installation difficulty is reduced, and the installation efficiency is improved.

In some embodiments, as shown in fig. 9 and 10, the baffle wall 1423 is vertically spaced from the diverter plate 1421.

Preferably, the baffle wall 1423 is disposed obliquely with respect to the flow distribution plate 1421, and the baffle wall 1423 extends from a position connected to the flow distribution plate 1421 to a direction away from the flow distribution plate 1421. Like this, on the one hand has enlarged the collection space of reposition of redundant personnel layer 142 to can better collect the condensate water of top, prevent that the condensate water from falling to other positions beyond reposition of redundant personnel layer 142, guarantee the reposition of redundant personnel effect, on the other hand makes baffle wall 1423 form downward direction, is favorable to the water droplet that splashes to on baffle wall 1423 to collect and flow down to reposition of redundant personnel board 1421 along baffle wall 1423 under the effect of gravity, and can continue to fall from reposition of redundant personnel hole 1422.

EXAMPLE III

As shown in fig. 9 and 10, in addition to the technical features of any of the above embodiments, the present embodiment further defines: along the length direction of the flow dividing plate 1421, two opposite sides of the flow dividing plate 1421 are respectively provided with a flow blocking wall 1423, the flow dividing plate 1421 and the flow blocking wall 1423 jointly define a groove structure with an opening 1424 above, and at least part of the water spraying pipe 141 extends into the groove structure.

In this embodiment, set up at least partial shower 141 and stretch into in the groove structure, further enlarged the collection space of reposition of redundant personnel layer 142 like this to can better collect the condensate water of top, prevent that the condensate water from falling to other positions outside the reposition of redundant personnel layer 142, guarantee the reposition of redundant personnel effect.

Preferably, the two baffle walls 1423 are respectively disposed obliquely with respect to the flow dividing plate 1421, and the two baffle walls 1423 respectively extend in a direction away from the flow dividing plate 1421.

Example four

As shown in fig. 10, in addition to the technical features of any of the above embodiments, the present embodiment further defines: the flow distribution plate 1421 is in a concave-convex shape, wherein the convex portion and/or the concave portion of the flow distribution plate 1421 are respectively provided with a flow distribution hole 1422.

In this embodiment, set up flow distribution plate 1421 and be unsmooth undulation, flow distribution plate 1421 through unsmooth undulation has further increased the area of contact of condensate with flow distribution plate 1421, has increased the resistance of condensate, has further reduced the velocity of flow of condensate, has prolonged the contact time of condensate with the exhaust steam for condensate can be more abundant with the contact of exhaust steam. And unsmooth undulation's flow distribution plate 1421 has increased the surface area for flow distribution plate 1421 can set up more flow distribution holes 1422, thereby makes the condensate water dispersed more evenly, has further strengthened flow distribution plate 1421's reposition of redundant personnel effect.

For example, the shunt plate 1421 has a wave shape, a broken line shape, or the like.

EXAMPLE five

As shown in fig. 5 and 8, in addition to the technical features of any of the above embodiments, the present embodiment further defines: the packing layer 143 includes a container, and stainless steel corrugated packing is contained in the container.

In this embodiment, the splendid attire stainless steel corrugated type filler that is equipped with in the splendid attire spare sets up, on the one hand, the condensate water is opened through filling further homodisperse, dispersion effect is better, on the other hand, stainless steel corrugated type filler has better heat conduction effect, under the heating effect of exhaust steam, stainless steel corrugated type filler has certain temperature for when condensate water and stainless steel corrugated type filler contact, can receive the dual heating effect of exhaust steam and stainless steel corrugated type filler simultaneously, further improve heating efficiency.

EXAMPLE six

As shown in fig. 7 and 8, in addition to the technical features of any of the above embodiments, the present embodiment further defines: the high back pressure side heat well 120 is provided with a plurality of water spraying pipes 141, the plurality of water spraying pipes 141 are distributed side by side and at intervals, a diversion layer 142 and a packing layer 143 corresponding to each water spraying pipe 141 are arranged below each water spraying pipe 141, wherein a steam channel 144 is formed between adjacent water spraying pipes 141, a steam channel 144 is formed between each water spraying pipe 141 and the diversion layer 142, and/or a steam channel 144 is formed between each diversion layer 142 and the packing layer 143.

In this embodiment, a steam channel 144 is formed between adjacent water spraying pipes 141, and/or a steam channel 144 is formed between the water spraying pipe 141 and the diversion layer 142, and/or a steam channel 144 is formed between the diversion layer 142 and the packing layer 143, and the entire oxygen removing device 140 has a frame structure, which is beneficial to circulation of exhaust steam and is convenient for the exhaust steam to sufficiently heat condensed water.

EXAMPLE seven

As shown in fig. 5 and 7, in addition to the technical features of any of the above embodiments, the present embodiment further defines: the oxygen removing device 140 has a mounting net frame 145, the mounting net frame 145 has a mounting frame 1451, a lateral support 1452, a longitudinal support 1453 and a vertical support 1454 are provided in the mounting frame 1451, wherein a shunt layer support plate 1455 and a packing layer support plate 1456 are provided below the longitudinal support 1453, the shunt layer 142 is mounted on the shunt layer support plate 1455, and the packing layer 143 is mounted on the packing layer support plate 1456.

In this embodiment, a shunt layer support plate 1455 and a packing layer support plate 1456 are provided below the longitudinal support members 1453, the shunt layer 142 is mounted on the shunt layer support plate 1455, and the packing layer 143 is mounted on the packing layer support plate 1456, so that the mounting stability of the shunt layer 142 and the packing layer 143 is improved.

For example, as shown in fig. 6, the longitudinal support members 1453 are i-shaped steel, the longitudinal support members 1453 are welded to the mounting frame 1451, and support angles 1457 are welded below the longitudinal support members 1453 to reinforce the mounting stability of the longitudinal support members 1453.

EXAMPLE seven

As shown in fig. 7 and 8, in addition to the technical features of any of the above embodiments, the present embodiment further defines: further comprising: and a middle partition plate 146 disposed in the high back pressure side heat well 120, and the packing layer 143 is abutted on the middle partition plate 146.

In this embodiment, the packing layer 143 is supported by the intermediate partition plate 146, and the mounting stability of the packing layer 143 is further increased.

EXAMPLE seven

As shown in fig. 1, 2 and 7, in addition to the technical features of any of the above embodiments, the present embodiment further defines: further comprising: and the water drainage pipe 147 is arranged in the high back pressure side heat well 120, and a water inlet 1471 of the water drainage pipe 147 faces to the side away from the oxygen removing device 140.

In this embodiment, the water inlet 1471 of the water drainage pipe 147 is arranged facing the side away from the oxygen removing device 140, wherein the water drainage pipe 147 is used to connect to the low-pressure heater to introduce the drainage in the low-pressure heater into the high-back-pressure side heat well 120, so that the drainage in the low-pressure heater is mixed with the condensed water in the high-back-pressure side heat well 120, the drainage with higher temperature is used to heat the condensed water, further raise the temperature of the condensed water, promote oxygen evolution, and reduce the oxygen content of the condensed water.

The utility model also provides a condenser 200, include: the condenser hot well oxygen removal and heat recovery system 100 according to any one of the above embodiments.

One embodiment

As shown in fig. 11 to 14, the present embodiment provides an optimized scheme for oxygen removal and heat recovery of a condenser hot well, specifically, the condenser 200 is a dual-back-pressure condenser 200, and the condenser 200 includes a water inlet chamber 210, a water outlet chamber 250, an air exhaust pipeline 240, and the like

The original condensed water at the low-pressure side is collected and then automatically flows into 5 hot well water spraying pipes 141 at the high-pressure side by gravity, and the lower parts of the pipes of the water spraying pipes 141 with phi 273 multiplied by 10 are provided with small holes which are scattered to hot wells.

The principle of the heat well deoxidization heat regeneration optimization transformation is as follows:

the gas in the condensed water is separated out from the water, and has two basic forms: one is the gas escaping from the water in small bubbles, and the other is the diffusion of gas molecules out of the water. Tests have shown that most of the gas can be rapidly evolved in the form of bubbles when heated against condensation water at a temperature much lower than the saturation temperature. However, when the condensed water is heated to near or at the saturation temperature, a small portion of the gas remaining is prevented from escaping by the surface tension and viscous forces of the water and gradually evolves only slowly in a diffuse manner. In order to accelerate the diffusion evolution of the gas, the following measures can be taken:

(1) the contact area and the contact time of the condensed water and the heating exhaust steam are increased, and the condensed water can be sprayed into a mist shape and crushed into a drop shape or a water film shape;

(2) the water flow of the condensed water is uniformly distributed.

Therefore, as shown in fig. 1 to 10, the original high-pressure side hot well water spray pipe 141 is still remained in the hot well oxygen-removing heat-returning optimization transformation of this time, the condensed water freely falling from the small holes of the water spray pipe falls into the high-pressure side stainless steel U-shaped splitter plate, a plurality of small holes are arranged on the bottom plate of the splitter plate, the condensed water is uniformly distributed and dispersed through the small holes, and the contact area and the contact time of the exhaust steam and the condensed water are prolonged.

The condensed water scattered through the diverter plate freely falls into the stainless steel corrugated packing at the lower part of the diverter plate, and the condensed water is further uniformly dispersed through the packing. When the tube bundle is optimized, the steam channels 144 between the tube bundles and the steam channels 144 between the tube bundle and the side wall are ensured, the exhaust steam uniformly enters the outside of each tube bundle area, and part of the exhaust steam can be ensured to directly flow to the water surface of the hot well. The condensed water and the exhaust steam which flows upwards in a reverse flow manner are fully contacted, the temperature of the exhaust steam at the high-pressure side is higher than that of the exhaust steam at the low-pressure side to carry out heat regeneration on the condensed water, and the oxygen in the condensed water is fully diffused and released, so that the deoxidization effect of the condensed water is ensured, and the circulating heat efficiency is improved.

The transformation scheme also comprises the following contents:

the method has the advantages that the supporting mode of the shell and the bottom of the existing condenser 200 is kept unchanged, the connecting mode of the shell and the bottom of the existing condenser is unchanged, and the parameters of the condenser 200 are correspondingly optimized, and the method specifically comprises the following steps:

1. the original condenser cooling pipes phi 19mmx0.5\0.7mmx10036mm, wherein 53424 stainless steel pipes with the wall thickness of 0.5mm and 4024 stainless steel pipes with the wall thickness of 0.7mm are changed into condenser cooling pipes 220 phi 19mmx0.5\0.7mmx10330mm, wherein 51884 stainless steel pipes with the wall thickness of 0.5mm and 3908 stainless steel pipes with the wall thickness of 0.7 mm.

2. The height of the original tube plate is increased from 4840mm to 5000mm, and the height of the tube plate 230 is increased by 160 mm.

3. The number of intermediate support plates 231 and end tube plates 232 is unchanged, the spacing between an end tube plate 232 and an adjacent intermediate support plate 231 is changed to 945mm, and the spacing between intermediate support plates 231 is changed to 832 mm.

4. As shown in fig. 14, the cooling tube center line X1 was offset from the condenser center line X2 by 50mm, and the distance from the center of the tube bundle to the condenser center line was changed from 1775mm to 1725 mm.

5. The length of the condenser cooling pipe 220 is increased from 9996mm to 10300mm, the condenser shell is lengthened by 294mm, and the front and the rear are lengthened by 147mm respectively.

6. The thickness of each water inlet chamber 210 and the water outlet chamber 210 is reduced by 147mm, the total thickness is 294mm, the connection between the water chamber and the tube plate 230 is changed from flange connection to full welding, and the connection between the cooling tube 220 and the tube plate 230 is used in combination with expansion welding.

7. As shown in fig. 12, the original outlet elevation of the condenser air extraction pipeline 240 is correspondingly raised, the raising amount can be correspondingly changed according to the field situation, and the rest of the external air extraction pipelines 240 are not changed;

8. as shown in fig. 13, the cooling tube 220 surrounds and defines a cavity, and an air baffle 260 is disposed in the cavity.

The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, but the present invention is not limited to the above embodiments, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still belong to the scope of the present invention.

Claims (10)

1. The utility model provides a condenser hot-well deoxidization backheat system which characterized in that includes: the low back pressure side hot well, the high back pressure side hot well and the hot well communicating pipe, a deoxidizing device is arranged above the high back pressure side hot well, the deoxidizing device comprises a water spraying pipe, a flow distribution layer and a packing layer,

one end of the hot well communicating pipe is communicated with the low-backpressure side hot well, the other end of the hot well communicating pipe is communicated with the water spraying pipe, the diversion layer is positioned below the water spraying pipe, and the packing layer is positioned below the diversion layer, so that condensed water of the low-backpressure side hot well flows into the water spraying pipe through the hot well communicating pipe and sequentially passes through the diversion layer and the packing layer and then falls into the high-backpressure side hot well.

2. The condenser hot well oxygen-removing and heat-regenerating system according to claim 1,

the flow distribution layer comprises a flow distribution plate, a plurality of flow distribution holes are formed in the flow distribution plate, and flow blocking walls are arranged at the edges of the flow distribution plate.

3. The condenser hot well oxygen-removing and heat-regenerating system according to claim 2,

the edge the length direction of flow distribution plate, the relative both sides of flow distribution plate are equipped with respectively keep off the class wall, the flow distribution plate with keep off class wall and inject the groove structure that the top has the opening jointly, at least part the trickle stretches into in the groove structure.

4. The condenser hot well oxygen-removing and heat-regenerating system according to claim 2 or 3,

the flow distribution plate is in a concave-convex shape, wherein the flow distribution holes are respectively formed in the convex part and/or the concave part of the flow distribution plate.

5. The condenser hot well oxygen-removing and heat-regenerating system according to any one of claims 1 to 3,

the packing layer comprises a containing piece, and stainless steel corrugated packing is contained in the containing piece.

6. The condenser hot well oxygen-removing and heat-regenerating system according to any one of claims 1 to 3,

the high back pressure side heat well is provided with a plurality of water spraying pipes which are distributed side by side at intervals, the flow dividing layer and the packing layer which correspond to the water spraying pipes are arranged below each water spraying pipe, a steam channel is formed between every two adjacent water spraying pipes, a steam channel is formed between each two adjacent water spraying pipes, and/or a steam channel is formed between each two adjacent water spraying pipes and the packing layer.

7. The condenser hot well oxygen-removing and heat-regenerating system according to any one of claims 1 to 3,

the deaerator has the installation rack, the installation rack has the installation framework, be equipped with horizontal support piece, longitudinal support piece and vertical support piece in the installation framework, wherein longitudinal support piece's below is provided with reposition of redundant personnel layer backup pad and packing layer backup pad, the reposition of redundant personnel layer install in the reposition of redundant personnel layer backup pad, the packing layer install in the packing layer backup pad.

8. The condenser hot well oxygen removal and heat recovery system of claim 7, further comprising:

and the middle separation plate is arranged in the high back pressure side heat well, and the packing layer is abutted against the middle separation plate.

9. The condenser hot well oxygen-removing and heat-regenerating system according to any one of claims 1 to 3, further comprising:

and the water drainage pipe is arranged in the high back pressure side heat well, and a water inlet of the water drainage pipe faces to one side away from the oxygen removal device.

10. A condenser, comprising:

the condenser hot well oxygen scavenging and heat regenerating system of any one of claims 1 to 9.

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