CN216591674U - Vertical low-pressure heater with large-area cooling section - Google Patents
Vertical low-pressure heater with large-area cooling section Download PDFInfo
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- CN216591674U CN216591674U CN202123314700.2U CN202123314700U CN216591674U CN 216591674 U CN216591674 U CN 216591674U CN 202123314700 U CN202123314700 U CN 202123314700U CN 216591674 U CN216591674 U CN 216591674U
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Abstract
A vertical low-pressure heater with a large-area cooling section relates to the field of low-pressure heaters in the power industry. The vertical low-pressure heater aims to solve the problems that the existing vertical low-pressure heater adopts a siphon type dredging section, but due to the limitation of the structure and the principle of the siphon dredging section, the area of the dredging section is not too large, and once the jacket of the siphon type dredging section leaks, the dredging section loses effectiveness immediately and is not easy to maintain. The condensation section, the upper water chamber, the lower water chamber and the cooling section are sequentially communicated from top to bottom, an upper tube plate is arranged at the joint of the condensation section and the upper water chamber, a water chamber horizontal partition plate is arranged at the joint of the upper water chamber and the lower water chamber, a lower tube plate is arranged at the joint of the lower water chamber and the cooling section, and after steam is condensed into water, the steam is further cooled by main water to form a water-draining cooling section, so that the leakage phenomenon is avoided; the cooling section belongs to an independent submerged cooling section, is not easy to lose efficacy, has larger area and is easy to overhaul. The utility model is suitable for a vertical low pressure feed water heater field.
Description
Technical Field
The utility model relates to an electric power industry low pressure feed water heater field, concretely relates to vertical low pressure feed water heater with large tracts of land is dredged cold section.
Background
The low-pressure heater in the conventional steam turbine generator unit is an important device for heating main feed water of a boiler through exhaust gas of a steam turbine. The temperature at which the heated steam condenses to hydrophobic in the condensation section is equal to the corresponding saturation temperature at steam pressure, which can typically be about 30 ℃ above the feedwater inlet temperature. In order to improve the economy of a power plant, a drain cooling section is generally arranged in a low-pressure heater, and drain waste heat is utilized to heat main feed water so as to reduce drain end difference. Due to the structural particularity of the vertical low-pressure heater, a siphon type dredging section is generally adopted in the past, but due to the structural limitation and the principle limitation of the siphon dredging section, the area of the dredging section is not too large, and once the jacket of the siphon type dredging section leaks, the dredging section immediately fails and is not easy to overhaul.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current vertical low pressure feed water heater and adopt hydrocone type to dredge cold section, nevertheless because the limitation of siphoning cold section structure and principle, it should not be too big to dredge cold section area, and siphoning type dredges cold section cladding in case leak, dredges cold section inefficacy immediately, and the difficult problem of overhauing, and provides a vertical low pressure feed water heater who has the large tracts of land and dredges cold section.
The utility model relates to a vertical low-pressure heater with a large-area cooling section, which comprises a condensation section, a cooling section, an upper water chamber, a lower water chamber, an upper tube plate, a lower tube plate, a water chamber horizontal division plate and a cooling section division plate;
the U-shaped pipe of the condensation section, the upper water chamber, the lower water chamber and the U-shaped pipe of the cooling section are sequentially communicated from top to bottom, an upper pipe plate is arranged at the joint of the condensation section and the upper water chamber, a water chamber horizontal partition plate is arranged at the joint of the upper water chamber and the lower water chamber, a lower pipe plate is arranged at the joint of the lower water chamber and the cooling section, a steam inlet is arranged on a shell of the condensation section, an air pumping port and a hydrophobic outlet of the condensation section are arranged on a shell at the bottom of the condensation section, a hydrophobic inlet of the cooling section and a hydrophobic outlet of the cooling section are arranged at the uppermost part of the shell of the cooling section, the drain inlet and the drain outlet of the cooling section are positioned at two sides of the partition plate of the cooling section, the drain outlet of the condensation section is communicated with the drain inlet of the cooling section through a pipeline, the shell of the upper water chamber is provided with a main water supply outlet, the shell of the lower water chamber is provided with a main water supply inlet, the inside of the cooling section is provided with a partition plate of the cooling section, the separating plate of the cooling section is parallel to the plane of the U-shaped pipe and passes through the central axis of the cylinder body of the cooling section;
furthermore, a first upper water chamber partition plate and a second upper water chamber partition plate are arranged inside the upper water chamber, the first upper water chamber partition plate is perpendicular to the plane of the U-shaped pipe and passes through the central axis of the water chamber cylinder, the width of the first upper water chamber partition plate is the inner diameter of the upper water chamber cylinder, the second upper water chamber partition plate is parallel to the plane of the U-shaped pipe and passes through the central axis of the water chamber cylinder, the width of the second upper water chamber partition plate is the inner radius of the upper water chamber cylinder, and the position of the second upper water chamber partition plate is close to the main water supply outlet;
further, the first upper water chamber partition plate and the second upper water chamber partition plate are perpendicular to the upper surface of the water chamber horizontal partition plate;
furthermore, a first lower water chamber partition plate and a second lower water chamber partition plate are arranged in the lower water chamber, the first lower water chamber partition plate is perpendicular to the plane of the U-shaped pipe and passes through the central axis of the water chamber cylinder, the width of the first lower water chamber partition plate is the inner diameter of the lower water chamber cylinder, the second lower water chamber partition plate is parallel to the plane of the U-shaped pipe and passes through the central axis of the water chamber cylinder, the width of the second lower water chamber partition plate is the inner radius of the lower water chamber cylinder, and the position of the second lower water chamber partition plate is close to the main water supply inlet;
furthermore, the first lower water chamber partition plate and the second lower water chamber partition plate are vertical to the lower surface of the water chamber horizontal partition plate;
further, the horizontal partition plate of the water chamber is a circular partition plate;
furthermore, a notch is arranged on the upper surface of the water chamber horizontal partition plate and is positioned at the last flow of the cooling dredging section;
furthermore, the area of the notch and the area of the upper surface of the horizontal partition plate of the water chamber are 1: 4;
furthermore, the heat exchange tubes in the condensation section and the cooling section are both U-shaped tubes;
furthermore, when the water-cooled heat exchanger is used, the condensation section and the cooling section are both four processes, the condensation section drainage outlet is positioned below a normal water level, the cooling section drainage inlet is positioned at the uppermost part of the cooling section shell, and the condensation section and the cooling section are communicated through a pipeline.
Steam enters the shell side of the condensation section through the steam inlet and is condensed into hydrophobic gas through heat exchange with the heat exchange tube, and non-condensation gas is pumped out through the air pumping port. The hydrophobic outlet of condensation section flows to the hydrophobic inlet of the cooling section, and after entering the side of the cooling section shell, the hydrophobic outlet of condensation section finally flows out from the hydrophobic outlet of the cooling section.
Main feed water enters the lower water chamber from a main feed water inlet, flows into the upper water chamber through the four flows of the cooling-dispersing section and the notch of the horizontal partition plate of the water chamber, and flows out from a main feed water outlet through the four flows of the condensation section.
After the steam is condensed to be hydrophobic, the steam is further cooled by main feed water, and a hydrophobic cooling section is formed. The cooling section belongs to an independent submerged cooling section, is not easy to lose efficacy, and the area of the cooling section can be larger.
Compared with the prior art, the utility model following beneficial effect has:
the utility model overcomes the defects of the prior art, the U-shaped pipe of the condensation section, the upper water chamber, the lower water chamber and the U-shaped pipe of the cooling section are sequentially communicated from top to bottom, the joint of the condensation section and the upper water chamber is provided with the upper pipe plate, the joint of the upper water chamber and the lower water chamber is provided with the horizontal water chamber partition plate, the joint of the lower water chamber and the cooling section is provided with the lower pipe plate, after steam is condensed into hydrophobic water, the steam is further cooled by main water, the hydrophobic cooling section is formed, and the leakage phenomenon is avoided; the cooling section belongs to an independent submerged cooling section, is not easy to lose efficacy, has larger area and is easy to overhaul.
Drawings
FIG. 1 is a front view of a vertical low pressure heater having a large area subcooling section according to the present invention;
FIG. 2 is a sectional view of the upper chamber of the vertical low pressure heater with a large area cooling section according to the present invention;
FIG. 3 is a sectional view of the lower chamber of the vertical low pressure heater with a large area cooling section according to the present invention;
FIG. 4 is a top view of the horizontal dividing plate of the middle water chamber of the vertical low pressure heater with a large area cooling section according to the present invention;
fig. 5 is a sectional view of the vertical low pressure heater with a large area cooling section.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 and 5, and the vertical low pressure heater with a large-area cooling-dispelling section according to the embodiment includes a condensation section 1, a cooling-dispelling section 2, an upper water chamber 3, a lower water chamber 4, an upper tube plate 5, a lower tube plate 6, a water chamber horizontal partition plate 7 and a cooling-dispelling section partition plate 13;
the U-shaped pipe of the condensation section 1, the upper water chamber 3, the lower water chamber 4 and the U-shaped pipe of the lyophobic section 2 are sequentially communicated from top to bottom, an upper pipe plate 5 is arranged at the joint of the condensation section 1 and the upper water chamber 3, a water chamber horizontal partition plate 7 is arranged at the joint of the upper water chamber 3 and the lower water chamber 4, a lower pipe plate 6 is arranged at the joint of the lower water chamber 4 and the lyophobic section 2, a steam inlet 8 is arranged on the shell of the condensation section 1, an air pumping port 9 and a condensation section hydrophobic outlet 10 are arranged on the shell at the bottom of the condensation section 1, a lyophobic inlet 11 and a lyophobic outlet 14 of the lyophobic section 2 are arranged at the uppermost part of the shell of the lyophobic section 2, the lyophobic inlet 11 and the hydrophobic outlet 14 of the lyophobic section are positioned at two sides of a lyophobic inlet 13 of the lyophobic section, the hydrophobic outlet 10 of the condensation section is communicated with the hydrophobic inlet 11 of the lyophobic section through a pipeline, a main water supply outlet 16 is arranged on the shell of the upper water chamber 3, a main water supply inlet 15 is arranged on the shell of the lower water chamber 4, a dredging section partition plate 13 is arranged in the dredging section 2, and the dredging section partition plate 13 is parallel to the plane of the U-shaped pipe and passes through the central axis of the dredging section cylinder;
in the present embodiment, when in use, the condensation section 1 and the cooling section 2 are both four-flow, the hydrophobic outlet 10 of the condensation section is located below the normal water level 17, the hydrophobic inlet 11 of the cooling section is located at the top of the shell of the cooling section 2, and the two are communicated with each other through a pipeline.
Steam enters the shell side of the condensation section 1 through the steam inlet 8, exchanges heat with the heat exchange tube and condenses into hydrophobic gas, and non-condensed gas is pumped out through the air pumping port 9. Hydrophobic outlet 10 of condensing section flows to hydrophobic entry 11 of section of dredging cold, get into the section shell side of dredging cold, dredge cold section shell side flow clearance 12 through the below and be equipped with the clearance between the section division board 13 edge of dredging cold and the section 2 inner walls of dredging cold, this clearance is dredged cold section shell side flow clearance 12 and enters into the section division board 13 opposite side of dredging cold, hydrophobic final outflow from the section hydrophobic outlet 14 of dredging cold.
Main feed water enters the lower water chamber from a main feed water inlet 15, flows into the upper water chamber through the notch of the horizontal partition plate 7 of the water chamber after passing through the four processes of the cooling-dispersing section, and flows out from a main feed water outlet 16 after passing through the four processes of the condensation section.
After the steam is condensed to be hydrophobic, the steam is further cooled by main feed water, and a hydrophobic cooling section is formed. The cooling section belongs to an independent submerged cooling section, is not easy to lose efficacy, and the area of the cooling section can be larger.
The second embodiment is as follows: the present embodiment is described with reference to fig. 2, and is a further limitation of the low pressure heater according to the first embodiment, and the vertical low pressure heater with a large-area cooling-dispersing section according to the present embodiment is characterized in that a first upper chamber partition plate 3-1 and a second upper chamber partition plate 3-2 are arranged inside the upper chamber 3, the first upper chamber partition plate 3-1 is perpendicular to the plane of the U-shaped tube and passes through the central axis of the upper chamber cylinder, the width of the first upper chamber partition plate is the inner diameter of the upper chamber cylinder, the second upper chamber partition plate 3-2 is parallel to the plane of the U-shaped tube and passes through the central axis of the upper chamber cylinder, the width of the second upper chamber partition plate is the inner radius of the upper chamber cylinder, and the position of the second upper chamber partition plate is close to the main water supply outlet 16;
this embodiment, adopt the inside of last hydroecium 3 be equipped with No. one go up hydroecium division board 3-1 and No. two go up hydroecium division board 3-2, and No. one go up hydroecium division board 3-1 and perpendicular and the central axis through the hydroecium barrel with the plane of U-shaped pipe place, the width is the internal diameter of going up the hydroecium barrel, No. two go up hydroecium division board 3-2 and parallel and the central axis through the hydroecium barrel with the plane of U-shaped pipe place, the width is the internal radius of going up the hydroecium barrel, the position is close to main water supply outlet 16, will go up hydroecium 3 and divide into three cavity, a cross-section is the cavity of semicircle, two cross-sections are the cavity of quarter circle.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 2, which is a further limitation of the low pressure heater according to the second embodiment, and in the vertical low pressure heater with a large-area cooling elimination section according to the present embodiment, the first upper chamber partition plate 3-1 and the second upper chamber partition plate 3-2 are perpendicular to the upper surface of the horizontal water chamber partition plate 7.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 3, and is a further limitation of the low pressure heater according to the first embodiment, and the vertical low pressure heater with a large-area cooling-dispersing section according to the present embodiment is a vertical low pressure heater with a large-area cooling-dispersing section, wherein a first lower chamber partition plate 4-1 and a second lower chamber partition plate 4-2 are arranged inside the lower water chamber 4, the first lower chamber partition plate 4-1 is perpendicular to the plane of the U-shaped tube and passes through the central axis of the water chamber cylinder, the width of the first lower chamber partition plate is the inner diameter of the lower water chamber cylinder, the second lower chamber partition plate 4-2 is parallel to the plane of the U-shaped tube and passes through the central axis of the water chamber cylinder, the width of the second lower water chamber partition plate is the inner radius of the lower water chamber cylinder, and the position of the second lower water chamber partition plate is close to the main water supply inlet 15;
this embodiment adopts launching room 4 inside be equipped with launching room division board 4-1 No. one and launching room division board 4-2 No. two, and launching room division board 4-1 No. one perpendicular with the plane of U-shaped pipe place and through the central axis of hydroecium barrel, the width is the internal diameter of launching room barrel, launching room division board 4-2 No. two is parallel with the plane of U-shaped pipe place and through the central axis of hydroecium barrel, the width is the internal radius of launching room barrel, the position is close to main water supply entry 15, divide launching room 4 into three cavity, a cross-section is the cavity of semicircle, two cross-sections are the cavity of quarter circle.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 3, which is a further limitation of the low pressure heater according to the fourth embodiment, and in the vertical low pressure heater having a large-area cooling evacuation section according to the present embodiment, the first and second lower chamber partition plates 4-1 and 4-2 are perpendicular to the lower surface of the water chamber horizontal partition plate 7.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 4, which is a further limitation of the low pressure heater according to the first embodiment, and the horizontal partition plate 7 of the header is a circular partition plate of the vertical low pressure heater having a large area cooling evacuation section according to the present embodiment.
The seventh embodiment: the present embodiment is described with reference to fig. 4, and is a further limitation of the low pressure heater according to the sixth embodiment, and the vertical low pressure heater with a large-area cooling evacuation section according to the present embodiment is characterized in that the upper surface of the horizontal partition plate 7 of the water chamber is provided with a notch, and the notch is located at the last flow path of the cooling evacuation section.
The specific implementation mode is eight: the present embodiment will be described with reference to fig. 4, which is a further limitation of the low pressure heater according to the seventh embodiment, and in the vertical low pressure heater having a large-area cooling evacuation section according to the present embodiment, the area of the notch and the area of the upper surface of the horizontal partition plate 7 of the header are 1: 4.
The specific implementation method nine: the present embodiment is described with reference to fig. 4, and is a further limitation to the low pressure heater described in the seventh embodiment, in the vertical low pressure heater with a large-area cooling-evacuation section described in the present embodiment, the heat exchange tubes in the condensation section 1 and the cooling-evacuation section 2 are both U-shaped tubes.
Principle of operation
When the device is used, the condensation section 1 and the cooling section 2 are both in four processes, the condensation section drainage outlet 10 is positioned below the normal water level 17, the cooling section drainage inlet 11 is positioned at the uppermost part of the shell of the cooling section 2, and the condensation section and the cooling section are communicated through a pipeline.
Steam enters the shell side of the condensation section 1 through the steam inlet 8, exchanges heat with the heat exchange tube and condenses into hydrophobic gas, and non-condensed gas is pumped out through the air pumping port 9. The drain water flows to a drain inlet 11 of the lyophobic section through a drain outlet 10 of the condensation section, enters the shell side of the lyophobic section, then enters the other side of a partition plate 13 of the lyophobic section through a lateral flow gap 12 of the shell of the lyophobic section below, and finally flows out from a drain outlet 14 of the lyophobic section.
Main feed water enters the lower water chamber from a main feed water inlet 15, flows into the upper water chamber through the notch of the horizontal partition plate 7 of the water chamber after passing through the four processes of the cooling-dispersing section, and flows out from a main feed water outlet 16 after passing through the four processes of the condensation section.
After the steam is condensed to be hydrophobic, the steam is further cooled by main feed water, and a hydrophobic cooling section is formed. The cooling section belongs to an independent submerged cooling section, is not easy to lose efficacy, and the area of the cooling section can be larger.
Claims (9)
1. The utility model provides a vertical low pressure feed water heater with large tracts of land is dredged cold section which characterized in that: the condensation section (1), the cooling section (2), the upper water chamber (3), the lower water chamber (4), the upper tube plate (5), the lower tube plate (6), the water chamber horizontal partition plate (7) and the cooling section partition plate (13);
the U-shaped pipe of the condensation section (1), the upper water chamber (3), the lower water chamber (4) and the condensing section (2) are sequentially communicated from top to bottom, an upper tube plate (5) is arranged at the joint of the condensation section (1) and the upper water chamber (3), a water chamber horizontal partition plate (7) is arranged at the joint of the upper water chamber (3) and the lower water chamber (4), a lower tube plate (6) is arranged at the joint of the lower water chamber (4) and the condensing section (2), a steam inlet (8) is arranged on the shell of the condensation section (1), an air pumping port (9) and a condensation section drainage outlet (10) are arranged on the shell at the bottom of the condensation section (1), a condensing section drainage inlet (11) and a condensing section drainage outlet (14) are arranged at the top of the shell of the condensing section (2), the condensing section drainage inlet (11) and the condensing section drainage outlet (14) are positioned at two sides of the condensing section (13), and the condensing section drainage outlet (10) is communicated with the condensing section drainage inlet (11) through a pipeline, the shell of the upper water chamber (3) is provided with a main water supply outlet (16), the shell of the lower water chamber (4) is provided with a main water supply inlet (15), the inside of the cooling section (2) is provided with a cooling section partition plate (13), and the cooling section partition plate (13) is parallel to the plane of the U-shaped pipe and passes through the central axis of the cooling section cylinder.
2. The vertical low pressure heater with large area subcooling section of claim 1, wherein: go up the inside of hydroecium (3) be equipped with one number go up hydroecium division board (3-1) and No. two number go up hydroecium division boards (3-2), and go up hydroecium division board (3-1) and perpendicular and the central axis through the hydroecium barrel with U-shaped pipe place plane, the width is the internal diameter of going up the hydroecium barrel, No. two number go up hydroecium division boards (3-2) and the parallel and the central axis through the hydroecium barrel of U-shaped pipe place plane, the width is the internal radius of going up the hydroecium barrel, the position is close to main water outlet (16).
3. The vertical low pressure heater with large area subcooling section of claim 2, wherein: the first upper water chamber partition plate (3-1) and the second upper water chamber partition plate (3-2) are perpendicular to the upper surface of the water chamber horizontal partition plate (7).
4. The vertical low pressure heater with large area subcooling section of claim 1, wherein: the inside lower header division board (4-1) and No. two lower header division boards (4-2) that are equipped with of lower header (4), and the central axis that just passes through the hydroecium barrel is perpendicular with the plane that the U-shaped pipe is located in lower header division board (4-1), the width is the internal diameter of lower header barrel, No. two lower header division boards (4-2) are parallel with the central axis that the plane that the U-shaped pipe is located and pass through the hydroecium barrel, the width is the internal radius of lower header barrel, the position is close to main water supply entry (15).
5. The vertical low pressure heater with large area subcooling section of claim 4, wherein: the first lower water chamber partition plate (4-1) and the second lower water chamber partition plate (4-2) are vertical to the lower surface of the water chamber horizontal partition plate (7).
6. The vertical low pressure heater with large area subcooling section of claim 1, wherein: the water chamber horizontal partition plate (7) is a circular partition plate.
7. The vertical low pressure heater with large area subcooling section of claim 6, wherein: the upper surface of the water chamber horizontal partition plate (7) is provided with a notch, and the notch is positioned at the last flow of the cooling dredging section.
8. The vertical low pressure heater with large area subcooling section of claim 7, wherein: the area of the notch and the area of the upper surface of the water chamber horizontal partition plate (7) are 1: 4.
9. The vertical low pressure heater with large area subcooling section of claim 1, wherein: the heat exchange tubes in the condensation section (1) and the cooling section (2) are both U-shaped tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123314700.2U CN216591674U (en) | 2021-12-27 | 2021-12-27 | Vertical low-pressure heater with large-area cooling section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123314700.2U CN216591674U (en) | 2021-12-27 | 2021-12-27 | Vertical low-pressure heater with large-area cooling section |
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| Publication Number | Publication Date |
|---|---|
| CN216591674U true CN216591674U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123314700.2U Active CN216591674U (en) | 2021-12-27 | 2021-12-27 | Vertical low-pressure heater with large-area cooling section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216591674U (en) |
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2021
- 2021-12-27 CN CN202123314700.2U patent/CN216591674U/en active Active
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