CN118009747A - Auxiliary equipment for improving vacuum extraction efficiency - Google Patents
Auxiliary equipment for improving vacuum extraction efficiency Download PDFInfo
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- CN118009747A CN118009747A CN202410110083.3A CN202410110083A CN118009747A CN 118009747 A CN118009747 A CN 118009747A CN 202410110083 A CN202410110083 A CN 202410110083A CN 118009747 A CN118009747 A CN 118009747A
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- pipe
- heat exchanger
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- vacuum
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- 238000000605 extraction Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 238000005086 pumping Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention proposes an auxiliary device for improving the efficiency of vacuum extraction, comprising: the heat exchanger, the condenser tube, the vacuum tube and the drain tube; the heat exchanger and the condensing pipe are relatively fixed, and a chamber for condensing water vapor is arranged in the heat exchanger; one side of the condensing pipe is communicated with an external water source, and the other side of the condensing pipe penetrates into the heat exchanger and forms a loop in a cavity of the heat exchanger; the vacuum tube comprises an input section and an output section, the input section is communicated with the condenser and the heat exchanger, and the output section is communicated with the heat exchanger and the vacuum equipment; the drain pipe is communicated with the condenser hot well, and when the vacuum equipment is started, the water vapor passing through the condensing pipe is condensed and flows back to the condenser hot well along with the drain pipe. According to the invention, through the design of the cooling pipe in the shell, condensation and interception steam enters the vacuumizing equipment, so that the vacuum equipment is required to be fully condensed with the outer peripheral surface of the cooling pipe when the non-condensed gas-steam mixture in the condenser is extracted, the efficiency of the vacuumizing equipment is further improved, and meanwhile, the loss of condensation water is avoided.
Description
Technical Field
The invention belongs to the technical field of thermal power plant equipment, and particularly relates to auxiliary equipment for improving vacuum extraction efficiency.
Background
The condenser is a device for providing low exhaust steam back pressure for the steam turbine and improving the steam enthalpy drop, and besides condensing exhaust steam of the steam turbine into water for reuse by the boiler, the condenser can also establish and maintain vacuum at the exhaust steam position of the steam turbine. After the steam turbine exhaust steam enters the condenser, the exhaust steam is condensed by circulating water, and because the specific volume difference between the steam and the water is large, the volume is greatly reduced after the steam is condensed into water, so that a vacuum state is formed in the condenser. However, due to the influence of various environmental factors in the thermal power plant, non-condensed gases (such as air and the like) inevitably exist in the condenser, and the gases are accumulated in the condenser, so that the vacuum degree of the condenser is reduced.
Currently, generally, in a thermal power plant, non-condensable gas in a condenser is treated by arranging a vacuum pumping device. The vacuum connection of the condenser is generally arranged at the upper part of the circulating water pipe side, and a large amount of water vapor exists in the vacuum connection. In the process of extracting non-condensable gas by the vacuum equipment, the water vapor can be extracted out of the condenser along with the non-condensable gas. This makes the vacuum pump can draw a large amount of steam in the operation in-process to lead to the evacuation equipment inefficiency, phenomenon such as condensate water moisturizing volume increase simultaneously.
Disclosure of Invention
In order to solve the problems that the vacuum pump in the background art can pump a large amount of water vapor in the operation process, thereby causing the phenomena of reduced efficiency of the vacuum pumping equipment, increased water supplementing amount of the condensed water and the like, the invention provides the following technical scheme:
An auxiliary device for improving vacuum extraction efficiency, comprising: the heat exchanger, the condenser tube, the vacuum tube and the drain tube; the heat exchanger and the condensing pipe are relatively fixed, and a chamber for condensing water vapor is arranged in the heat exchanger; one side of the condensing pipe is communicated with an external water source, and the other side of the condensing pipe penetrates into the heat exchanger and forms a loop in a cavity of the heat exchanger; the vacuum tube comprises an input section and an output section, the input section is communicated with the condenser and the heat exchanger, and the output section is communicated with the heat exchanger and the vacuum equipment; the drain pipe is communicated with the condenser hot well, and when the vacuum equipment is started, water vapor passing through the condensing pipe is condensed and flows back to the condenser hot well along with the drain pipe.
Wherein, the condenser pipe includes: the device comprises an end cover, a flow dividing disc, a partition plate, a water inlet pipe, a plurality of branch pipes and a water outlet pipe; the sealing cover is fixedly arranged at a port of the heat exchanger, and a water inlet port for fixing the water inlet pipe and a water outlet port for fixing the water outlet pipe are respectively arranged on the surface of the sealing cover; the flow distribution disc is fixedly arranged on the inner wall of the heat exchanger, and a plurality of through holes which are distributed at intervals are formed in the surface of the flow distribution disc; the partition plate is vertically arranged on the surface of the flow distribution disc so as to divide the space between the end cover and the flow distribution disc into a water inlet side and a water outlet side; one end of the water inlet pipe is connected with an external water source, and the other end of the water inlet pipe penetrates through the water inlet interface and enters the water inlet side; each branch pipe is arranged in the cavity, and two ends of each branch pipe are communicated with the water inlet side and the water outlet side; one end of the water outlet pipe is positioned in the water outlet side, and the other end of the water outlet pipe is communicated with the circulating water pipeline through the water outlet interface.
Further, each of the branch pipes is located above the drain pipe, and each of the branch pipes is located between the input section and the output section.
Further, the inner wall of the heat exchanger where the drain pipe is located is inclined towards the drain pipe.
Further, each of the bypass tubes is arranged in an array within the heat exchanger, thereby forming a split screen for condensed water vapor between the input section and the output section.
The beneficial effects are that: according to the invention, through the design of the cooling pipe in the shell, condensation and interception steam enters the vacuumizing equipment, so that the vacuum equipment is required to be fully condensed with the outer peripheral surface of the cooling pipe when the non-condensed gas-steam mixture in the condenser is extracted, the efficiency of the vacuumizing equipment is further improved, and meanwhile, the loss of condensation water is avoided.
Drawings
FIG. 1 is a schematic side view of an auxiliary device for improving vacuum pumping efficiency according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing a front view of an auxiliary device for improving vacuum pumping efficiency, in which a water inlet port and a water outlet port are blocked by a water inlet pipe and a water outlet pipe according to an embodiment of the present invention;
Fig. 3 is a schematic structural view of a cooling tube according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the present patent.
Fig. 1 is a schematic side view of an auxiliary device for improving vacuum pumping efficiency according to an embodiment of the present invention.
Referring to fig. 1, an auxiliary apparatus for improving vacuum pumping efficiency according to an embodiment of the present invention includes: the heat exchanger 1, the condenser tube 2, the vacuum tube 3 and the drain tube 4; the heat exchanger 1 and the condensing pipe 2 are relatively fixed, and a chamber for condensing water vapor is arranged in the heat exchanger 1; one side of the condensing tube 2 is communicated with an external water source, and the other side of the condensing tube 2 penetrates into the heat exchanger 1 and forms a loop in a cavity of the heat exchanger 1; the vacuum tube 3 comprises an input section 31 and an output section 32, wherein the input section 31 is communicated with the condenser and the heat exchanger 1, and the output section 32 is communicated with the heat exchanger 1 and the vacuum equipment; the drain pipe 4 is communicated to the condenser hot well, and when the vacuum equipment is started, the water vapor passing through the condensing pipe 2 is condensed and flows back to the condenser hot well along with the drain pipe 4.
Fig. 2 is a schematic front view of an auxiliary device for improving vacuum pumping efficiency according to an embodiment of the present invention, in which the water inlet and outlet ports are blocked by the water inlet pipe 24 and the water outlet pipe 26.
Referring to fig. 2, in particular, the condensation duct 2 includes: end cap 21, flow dividing disk 22, baffle 23, inlet tube 24, a plurality of branch pipes 25 and outlet tube 26. Wherein, one side of the end cover 21 is fixedly arranged at the port of the heat exchanger 1, and the other side of the end cover 21 is respectively provided with a water inlet interface and a water outlet interface. Wherein the water inlet port is matched with the water inlet pipe 24, and the water outlet port is matched with the water outlet pipe 26. The surface of the diverter plate 22 is provided with a plurality of through holes which are arranged at intervals, and the baffle plate 23 is vertically arranged on the surface of the diverter plate 22, so that the space between the sealing cover 21 and the diverter plate 22 is divided into a water inlet side and a water outlet side. One end of the water inlet pipe 24 is connected with an external water source, and the other end of the water inlet pipe 24 penetrates into the water inlet side through a water inlet interface. One end of the water outlet pipe 26 is positioned in the water outlet side, and the other end of the water outlet pipe 26 is communicated with the circulating water pipeline through a water outlet interface.
Fig. 3 is a schematic structural view of a cooling tube according to an embodiment of the present invention.
Referring to fig. 3, two sides of each bypass pipe 25 are respectively connected to a water inlet side and a water outlet side, and the water inlet side and the water outlet side are symmetrical with respect to the partition 23. The cooling water flowing into the end cap 21 through the water inlet pipe 24 is split by the through holes of the split plate 22 so as to be outputted along each branch pipe 25. Each of the branch pipes 25 has a U-shape. Each branch pipe 25 is arranged in an array inside the heat exchanger 1, so that a split screen for condensed water vapor is formed between the input section 31 and the output section 32. In the gas flowing in the input section 31, water vapor is condensed into water on the outer peripheral surface of the branch pipe 25, and only the remaining non-condensed gas is pumped out by the vacuumizing device through the output section 32, so that the non-condensed gas pumped out by the vacuumizing device is necessarily increased under the condition of the same output force of the vacuumizing device, and the efficiency of the vacuumizing device is improved.
Further, the condensed water is gathered at the drain pipe 4, and because the drain pipe 4 is connected with the condenser hot well, the condensed water automatically flows into the condenser hot well to be discharged into the heat exchanger 1 due to gravity, so that the water vapor in the heat exchanger 1 during vacuum pumping is recovered, and the loss of condensed water is reduced.
In summary, the condensing interception steam enters the vacuumizing device through the design of the cooling pipe in the shell, so that the vacuum device is required to fully condense with the outer peripheral surface of the cooling pipe when the non-condensing gas-steam mixture in the condenser is extracted, the efficiency of the vacuumizing device is improved, and meanwhile, the loss of condensed water is avoided.
The foregoing describes specific embodiments of the invention. Other embodiments are within the scope of the following claims.
The terms "exemplary," "example," and the like, as used throughout this specification, mean "serving as an example, instance, or illustration," and do not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described embodiments.
The alternative implementation of the embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the embodiment of the present invention is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solutions of the embodiment of the present invention within the scope of the technical concept of the embodiment of the present invention, and these simple modifications all fall within the protection scope of the embodiment of the present invention.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An auxiliary device for improving vacuum pumping efficiency, comprising: the heat exchanger (1), the condenser tube (2), the vacuum tube (3) and the drain tube (4); the heat exchanger (1) and the condensing pipe (2) are relatively fixed, and a chamber for condensing water vapor is arranged in the heat exchanger (1); one side of the condensing pipe (2) is communicated with an external water source, and the other side of the condensing pipe (2) penetrates into the heat exchanger (1) and forms a loop in a cavity of the heat exchanger (1); the vacuum tube (3) comprises an input section (31) and an output section (32), the input section (31) is communicated with the condenser and the heat exchanger (1), and the output section (32) is communicated with the heat exchanger (1) and vacuum equipment; the drain pipe (4) is communicated with the condenser hot well, and when the vacuum equipment is started, water vapor passing through the condensing pipe (2) is condensed and flows back to the condenser hot well along with the drain pipe (4).
2. An auxiliary device for improving the efficiency of vacuum extraction according to claim 1, characterized in that the condenser tube (2) comprises: an end cover (21), a flow distribution disc (22), a partition plate (23), a water inlet pipe (24), a plurality of branch pipes (25) and a water outlet pipe (26); the end cover (21) is fixedly arranged at a port of the heat exchanger (1), and a water inlet interface for fixing the water inlet pipe (24) and a water outlet interface for fixing the water outlet pipe (26) are respectively arranged on the surface of the end cover (21); the flow distribution disc (22) is fixedly arranged on the inner wall of the heat exchanger (1), and a plurality of through holes which are distributed at intervals are formed in the surface of the flow distribution disc (22); the partition plate (23) is vertically arranged on the surface of the flow distribution disc (22) so as to divide the space between the end cover (21) and the flow distribution disc (22) into a water inlet side and a water outlet side; one end of the water inlet pipe (24) is connected with an external water source, and the other end of the water inlet pipe (24) passes through the water inlet interface and enters the water inlet side; each branch pipe (25) is arranged in the cavity, and two ends of each branch pipe (25) are communicated with the water inlet side and the water outlet side; one end of the water outlet pipe (26) is positioned in the water outlet side, and the other end of the water outlet pipe (26) is communicated with the circulating pipeline through the water outlet interface.
3. An auxiliary device for improving the efficiency of vacuum extraction according to claim 2, characterized in that each of the branch pipes (25) is located above the drain pipe (4) and that each of the branch pipes (25) is located between the input section (31) and the output section (32).
4. An auxiliary device for improving the efficiency of vacuum extraction according to claim 1, characterized in that the inner wall of the heat exchanger (1) where the drain pipe (4) is located is arranged inclined towards the drain pipe (4).
5. An auxiliary device for improving the efficiency of vacuum extraction according to claim 2, characterized in that each of said branch ducts (25) is arranged in an array within said heat exchanger (1) so as to form a split screen for condensed water vapour between said input section (31) and said output section (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410110083.3A CN118009747A (en) | 2024-01-26 | 2024-01-26 | Auxiliary equipment for improving vacuum extraction efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410110083.3A CN118009747A (en) | 2024-01-26 | 2024-01-26 | Auxiliary equipment for improving vacuum extraction efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118009747A true CN118009747A (en) | 2024-05-10 |
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ID=90957643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410110083.3A Pending CN118009747A (en) | 2024-01-26 | 2024-01-26 | Auxiliary equipment for improving vacuum extraction efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118009747A (en) |
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2024
- 2024-01-26 CN CN202410110083.3A patent/CN118009747A/en active Pending
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