CN210716919U - Drainage adjusting device of low-pressure heater - Google Patents
Drainage adjusting device of low-pressure heater Download PDFInfo
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- CN210716919U CN210716919U CN201920554963.4U CN201920554963U CN210716919U CN 210716919 U CN210716919 U CN 210716919U CN 201920554963 U CN201920554963 U CN 201920554963U CN 210716919 U CN210716919 U CN 210716919U
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- regulating pipe
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Abstract
The utility model relates to a low pressure feed water heater especially relates to a hydrophobic adjusting device of low pressure feed water heater. The utility model discloses a fixed just drain pipe that communicates with the low pressure feed water heater body, its structural feature lies in: the speed-regulating pipe is connected with the floating ball through a connecting rod; the bottom hole is formed in the bottom of the drain pipe, the speed regulating pipe is installed on the bottom hole, the side wall hole is formed in the side wall of the speed regulating pipe, the sealing element is installed at one end of the speed regulating pipe, the limiting block is installed at the other end of the speed regulating pipe, and the floating ball is connected with the speed regulating pipe through the connecting rod. The water drainage device has the advantages of no electric element, no power consumption, lower cost, simple structure, convenient maintenance, more reliable operation, manual drainage after shutdown, no residual drainage and no influence on water quality.
Description
Technical Field
The utility model relates to a low pressure feed water heater especially relates to a hydrophobic adjusting device of low pressure feed water heater.
Background
The regenerative feedwater heating system is the core of a thermodynamic system of a power plant, and the connection arrangement mode and the quality of the operation condition of the regenerative feedwater heating system play a crucial role in the heat economy of a unit. The degree to which the condensate flows through the regenerative system is heated is related to factors such as the extraction pressure and temperature of the heater, the structural arrangement of the heater, and the like. The connection mode of the drainage of the low-pressure heater directly influences the state of the whole thermodynamic cycle and influences the heat economy of the unit.
In order to reliably discharge the drain water of the heater in time so as to maintain the stable water level and the stable steam side pressure in the heater, a regulating device must be arranged on the drain pipeline of each heater for regulating the flow of the drain water. The drainage regulating device of the common low-pressure heater adopts a U-shaped water seal pipe or an electronic regulating system. The static pressure of the water column of the U-shaped pipe section is used for balancing the pressure difference between the low-pressure heater and the drainage collector. U-shaped pipes are difficult to arrange (dig deep pits), and residual drainage exists after the operation is stopped, so that the water quality is influenced.
The electronic regulating system is characterized in that regulating valves are arranged at the drainage positions of the low-pressure heaters, each low-pressure heater is provided with 2 double-chamber balance containers, the change of the water level of the low-pressure heaters is output by the balance containers and is converted into an electric signal of 4-20 mA through a differential pressure transmitter to enter a DCS, the real-time liquid level of the low-pressure heaters is displayed on an operation console, and the DCS controls the opening degree of the drainage regulating valves of the low-pressure heaters to control the water level of the low-pressure heaters within a normal water level fluctuation range.
Each low-pressure heater is provided with a magnetic turning plate local liquid level display, a magnetic floating ball is arranged in a measuring cylinder of the magnetic liquid level display, the measuring cylinder is connected with a low heater through an upper balance communicating pipe and a lower balance communicating pipe, the magnetic floating ball floats up and down along with the change of the liquid level in a measured container to attract the magnetic turning plate in the display support to turn over, the red surface turns out to indicate that the liquid level exists, the upper edge of the red surface indicates the liquid level, and bright metal color turns out to indicate that the liquid level does not exist. Several magnetic switches are arranged at proper positions of the magnetic liquid level display, and can be used as remote transmission interlock and alarm signal of low water filling level.
The electronic regulating system has the defects of high cost, overheating of a motor caused by frequent action of the drain regulating valve, jamming of regulating parts, easy aging of electrical elements and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a hydrophobic adjusting device of low pressure feed water heater that structural design is reasonable.
The utility model provides a technical scheme that above-mentioned problem adopted is: this hydrophobic adjusting device of low pressure feed water heater includes the drain pipe who fixes and communicates with the low pressure feed water heater body, and its structural feature lies in: the speed-regulating pipe is connected with the floating ball through a connecting rod; the bottom hole is formed in the bottom of the drain pipe, the speed regulating pipe is installed on the bottom hole, the side wall hole is formed in the side wall of the speed regulating pipe, the sealing element is installed at one end of the speed regulating pipe, the limiting block is installed at the other end of the speed regulating pipe, and the floating ball is connected with the speed regulating pipe through the connecting rod. The water drainage device has the advantages of no electric element, no power consumption, lower cost, simple structure, convenient maintenance, more reliable operation, manual drainage after shutdown, no residual drainage and no influence on water quality.
Further, the sealing element is located inside the low-pressure heater body, and the limiting block is located outside the low-pressure heater body.
Further, the floating ball is positioned above the water level.
Furthermore, the number of the side wall holes and the number of the bottom holes are multiple.
Furthermore, a speed regulating pipe is arranged in each bottom hole.
Further, the inner diameter of the bottom hole is 1mm larger than the outer diameter of the speed regulating pipe.
Further, the limiting block is in contact with the bottom of the drain pipe.
Further, the sealing element is a rubber sealing gasket.
Further, the number of the drain pipes is two, and the two drain pipes are arranged side by side.
Further, the total area of the side wall holes is 110% of the total area of the bottom holes.
Compared with the prior art, the utility model has the advantages of it is following: the drainage regulating device adopts devices such as a floating ball and a speed regulating pipe, does not use an electric element, pulls the speed regulating pipe by buoyancy, further controls the number of holes on the speed regulating pipe to regulate the drainage speed of condensed water, and timely and reliably discharges drainage of the heater so as to maintain the stability of water level and steam side pressure in the heater.
Drawings
Fig. 1 is a schematic front view of a low pressure heater according to an embodiment of the present invention.
Fig. 2 is a schematic side view of a low pressure heater according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a drainage regulating device of a low-pressure heater according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a drain pipe according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a speed control pipe according to an embodiment of the present invention.
In the figure: the low-pressure heater comprises a low-pressure heater body 1, a drain pipe 2, a water level 3, a floating ball 4, a connecting rod 5, a speed regulating pipe 6, a sealing element 7, a side wall hole 8, a limiting block 9 and a bottom hole 10.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1 to 5, it should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essence, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, in the present specification, if the terms such as "upper", "lower", "left", "right", "middle" and "one" are used, they are not intended to limit the scope of the present invention, but to limit the relative relationship between the terms and the terms, and the scope of the present invention is not to be considered as the scope of the present invention.
The hydrophobic adjusting device of low pressure feed water heater in this embodiment includes drain pipe 2 fixed and the intercommunication with low pressure feed water heater body 1 to and including floater 4, connecting rod 5, speed governing pipe 6, sealing member 7, lateral wall hole 8, stopper 9 and bottom hole 10, floater 4 is located more than 3.
The number of the drain pipes 2 in the embodiment is two, the two drain pipes 2 are arranged side by side, the number of the side wall holes 8 and the number of the bottom holes 10 are both multiple, the total area of the side wall holes 8 is 110% of the total area of the bottom holes 10, a speed regulation pipe 6 is respectively installed in each bottom hole 10, and the inner diameter of each bottom hole 10 is 1mm larger than the outer diameter of the speed regulation pipe 6.
Specifically, low pressure feed water heater body 1 sets up two drain pipes 2, the comdenstion water gets into drain pipe 2 when water level 3 surpasss the upper end of drain pipe 2, bottom hole 10 that design quantity is A in the bottom of drain pipe 2, speed governing pipe 6 passes through connecting rod 5 and links to each other with floater 4, the lateral wall design quantity of speed governing pipe 6 is lateral wall hole 8 of B, speed governing pipe 6 upper end design has sealing member 7, the lower extreme design has stopper 9, when water level 3 rose to limited height H1 (low pressure feed water heater body 1 designs high water level warning water level) in low pressure feed water heater body 1, the buoyancy that floater 4 produced drives speed governing pipe 6 through connecting rod 5 and rises, the comdenstion water flows into drain pipe 2 through lateral wall hole 8 on the speed governing pipe 6, finally the production and the emission of comdenstion.
The quantity A of the bottom holes 10 of the drain pipe 2 is calculated according to the inner diameter D of the bottom holes 10 and the maximum speed E of the condensate water generation, and the calculation principle is that the total area of the bottom holes 10 can ensure that the condensate water does not exceed the water level H2 under the condition of the maximum generation speed (the low-pressure heater body 1 is designed with a high-water-level cutting water level).
The diameter of the floating ball 4 is calculated according to the weight of the connecting rod 5 and the speed regulating pipe 6, and the connecting rod 5 and the speed regulating pipe 6 can be pulled up according to the calculation principle.
The inner diameter D of the bottom hole 10 of the drain pipe 2 is 1mm larger than the outer diameter C of the speed regulating pipe 6, so that the speed regulating pipe 6 can normally rise and fall.
The number B of the side wall holes 8 on the speed regulating pipe 6 is calculated according to the inner diameter F of the side wall holes 8 and the inner diameter D of the bottom holes 10, and the calculation principle is that the total area of the side wall holes 8 is 110% of the total area of the bottom holes 10, so that partial side wall holes 8 are prevented from being blocked, and the reliability of the device is enhanced.
The limiting block 9 is used for pulling the speed regulating pipe 6 away from the bottom hole 10 by the floating ball 4.
According to the working principle, when the power generation load rises, the generation speed of the condensed water is increased, the water level 3 of the condensed water is increased, the buoyancy of the floating ball 4 is increased, the lifting height of the speed adjusting pipe 6 is increased, the number of the side wall holes 8 exposed in the condensed water is increased, the discharge speed of the condensed water is increased, and finally, new generation and discharge balance is formed.
When the power generation load is reduced, the generation speed of the condensed water is reduced, the water level 3 of the condensed water is reduced, the buoyancy of the floating ball 4 is reduced, the lifting height of the speed adjusting pipe 6 is reduced, the number of side wall holes 8 exposed in the condensed water is reduced, the discharge speed of the condensed water is reduced, and when the water level of the condensed water is lower than the limited height H1, the sealing element 7 is sealed with the bottom of the drain pipe 2, and the drainage is cut off.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The utility model provides a hydrophobic adjusting device of low pressure feed water heater, includes drain pipe (2) fixed and the intercommunication with low pressure feed water heater body (1), its characterized in that: the device also comprises a floating ball (4), a connecting rod (5), a speed regulating pipe (6), a sealing element (7), a side wall hole (8), a limiting block (9) and a bottom hole (10); the bottom hole (10) is formed in the bottom of the drain pipe (2), the speed regulating pipe (6) is installed on the bottom hole (10), the side wall hole (8) is formed in the side wall of the speed regulating pipe (6), the sealing element (7) is installed at one end of the speed regulating pipe (6), the limiting block (9) is installed at the other end of the speed regulating pipe (6), and the floating ball (4) is connected with the speed regulating pipe (6) through the connecting rod (5); the sealing element (7) is located inside the low-pressure heater body (1), and the limiting block (9) is located outside the low-pressure heater body (1).
2. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the floating ball (4) is positioned above the water level (3).
3. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the number of the side wall holes (8) and the number of the bottom holes (10) are both multiple.
4. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: each bottom hole (10) is internally provided with a speed regulating pipe (6).
5. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the inner diameter of the bottom hole (10) is 1mm larger than the outer diameter of the speed regulating pipe (6).
6. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the limiting block (9) is contacted with the bottom of the drain pipe (2).
7. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the sealing element (7) is a rubber sealing gasket.
8. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the number of the drain pipes (2) is two, and the two drain pipes (2) are arranged side by side.
9. The hydrophobic adjustment device of low pressure heater of claim 1, wherein: the total area of the side wall holes (8) is 110% of the total area of the bottom holes (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920554963.4U CN210716919U (en) | 2019-04-22 | 2019-04-22 | Drainage adjusting device of low-pressure heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920554963.4U CN210716919U (en) | 2019-04-22 | 2019-04-22 | Drainage adjusting device of low-pressure heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210716919U true CN210716919U (en) | 2020-06-09 |
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ID=70961961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920554963.4U Active CN210716919U (en) | 2019-04-22 | 2019-04-22 | Drainage adjusting device of low-pressure heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210716919U (en) |
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2019
- 2019-04-22 CN CN201920554963.4U patent/CN210716919U/en active Active
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