CN216205422U - Deaerator emptying steam recovery system - Google Patents
Deaerator emptying steam recovery system Download PDFInfo
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- CN216205422U CN216205422U CN202122328584.3U CN202122328584U CN216205422U CN 216205422 U CN216205422 U CN 216205422U CN 202122328584 U CN202122328584 U CN 202122328584U CN 216205422 U CN216205422 U CN 216205422U
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Abstract
The utility model discloses an emptying steam recovery system of a deaerator, wherein a steam outlet of the deaerator is connected with a heat source inlet of a heat exchanger through a recovery pipe, and a heat source outlet of the heat exchanger is connected with a liquid inlet of a liquid separation tank; the gas outlet of the liquid separation tank is connected with one end of an emptying pipe, and the other end of the emptying pipe is connected with the inlet of a centrifugal fan; the liquid outlet of the liquid separating tank is connected with one end of a condensate pipe, and the other end of the condensate pipe is connected with the inlet of a condensate recovery pump. Cooling and condensing the condensate by a heat exchanger, then separating the condensate in a separating tank, emptying steam and non-condensable gas from an emptying pipe at the top, returning the condensate to a condensate recovery system from a condensate pipe, recovering water resources, saving energy and reducing emission; after the pressure in the deaerator exceeds the set pressure of the deaerator, the controller receives a signal of the pressure sensor, and the controller controls the centrifugal fan to start, so that steam in the deaerator is quickly discharged out of the deaerator, the pressure and the temperature of the deaerator are reduced, and the deaerator is guaranteed to normally produce.
Description
The technical field is as follows:
the utility model relates to the field of boiler steam treatment, in particular to a deaerator emptying steam recovery system.
Background art:
the deaerator is one of the key devices of the boiler and is used for removing oxygen and other gases dissolved in boiler feed water, preventing and reducing corrosion of boiler feed water pipes, economizers and other accessory equipment, and a separated heat source is from atmospheric steam. However, in the practical use process, the atmospheric pressure deaerator is generally directly discharged to the atmosphere by using low-pressure steam, and the temperature and the pressure of the deaerator are ensured not to exceed the design values while the oxygen content in water is removed, but the defect of the mode is very obvious:
1. the steam is directly discharged, and the steam can be condensed and frozen when running in winter, so that potential safety hazards exist in a production field;
2. the direct discharge of steam into the atmosphere results in the waste of water resources.
The utility model has the following contents:
the utility model aims to provide a water-saving deaerator emptying steam recovery system.
The utility model is implemented by the following technical scheme:
the deaerator emptying steam recovery system comprises a deaerator, a heat exchanger and a liquid separation tank, wherein a steam outlet of the deaerator is connected with a steam emptying pipe; the gas outlet of the liquid separation tank is connected with one end of an emptying pipe, and the other end of the emptying pipe is connected with the inlet of a centrifugal fan; a liquid outlet of the liquid separation tank is connected with one end of a condensate pipe, and the other end of the condensate pipe is connected with an inlet of a condensate recovery pump;
a first stop valve is arranged on the steam emptying pipe, and a second stop valve is arranged on the recovery pipe;
install pressure sensor on the degasification tower of oxygen-eliminating device, pressure sensor's signal output part is connected with the signal input part electricity of controller, centrifugal fan's signal input part with the signal output part electricity of controller is connected.
Preferably, a liquid level meter is installed in the liquid separation tank, a signal output end of the liquid level meter is electrically connected with a signal input end of the controller, and a signal input end of the condensate recovery pump is electrically connected with a signal output end of the controller.
The utility model has the advantages that: cooling and condensing the condensate by a heat exchanger, then separating the condensate in a separating tank, emptying steam and non-condensable gas from an emptying pipe at the top, returning the condensate to a condensate recovery system from a condensate pipe, recovering water resources, saving energy and reducing emission; after the pressure in the deaerator exceeds the set pressure of the deaerator, the controller receives a signal of the pressure sensor, and the controller controls the centrifugal fan to start, so that steam in the deaerator is quickly discharged out of the deaerator, the pressure and the temperature of the deaerator are reduced, and the deaerator is guaranteed to normally produce.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the control circuit of the present invention.
In the figure: the device comprises a deaerator 1, a heat exchanger 2, a liquid separating tank 3, a steam emptying pipe 4, a recovery pipe 5, an emptying pipe 6, a centrifugal fan 7, a condensate pipe 8, a condensate recovery pump 9, a first stop valve 10, a second stop valve 11, a pressure sensor 12, a controller 13 and a liquid level meter 14.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, the deaerator emptying steam recovery system comprises a deaerator 1, wherein a steam outlet of the deaerator 1 is connected with a steam emptying pipe 4, the deaerator emptying steam recovery system also comprises a heat exchanger 2 and a liquid separating tank 3, the steam outlet of the deaerator 1 is connected with a heat source inlet of the heat exchanger 2 through a recovery pipe 5, and a heat source outlet of the heat exchanger 2 is connected with a liquid inlet of the liquid separating tank 3; the gas outlet of the liquid separation tank 3 is connected with one end of an emptying pipe 6, and the other end of the emptying pipe 6 is connected with the inlet of a centrifugal fan 7; a liquid outlet of the liquid separating tank 3 is connected with one end of a condensate pipe 8, and the other end of the condensate pipe 8 is connected with an inlet of a condensate recovery pump 9;
a first stop valve 10 is arranged on the steam emptying pipe 4, and a second stop valve 11 is arranged on the recovery pipe 5;
a pressure sensor 12 is arranged on a degassing tower of the deaerator 1, a liquid level meter 14 is arranged in the liquid separating tank 3, signal output ends of the pressure sensor 12 and the liquid level meter 14 are electrically connected with a signal input end of a controller 13, and signal input ends of the centrifugal fan 7 and the condensate recovery pump 9 are electrically connected with a signal output end of the controller 13;
when the device is used, the first stop valve 10 is closed, the second stop valve 11 is opened, normal-pressure steam is heated in the deaerator 1, then is discharged from a steam outlet of the deaerator 1, enters the heat exchanger 2 from the recovery pipe 5, is cooled and condensed by the heat exchanger 2, and then is sent into the liquid separation tank 3 for separation, so that the steam and non-condensable gas are separated from condensate, the steam is discharged from the emptying pipe 6 at the top, and the condensate returns to the condensate recovery system from the condensate pipe 8;
in the using process, the pressure sensor 12 is used for detecting the pressure in the deaerator 1, when the pressure in the deaerator 1 exceeds the set pressure of the deaerator 1, in order to prevent safety accidents, the controller 13 receives a signal of the pressure sensor 12, and the controller 13 controls the centrifugal fan 7 to start, so that steam in the deaerator 1 is quickly discharged out of the deaerator 1, and the pressure and the temperature of the deaerator 1 are reduced; after the pressure in the deaerator 1 reaches a normal value, the centrifugal fan 7 can be controlled to be closed through the controller 13, and the energy-saving effect is achieved;
meanwhile, the liquid level meter 14 is used for detecting the liquid level of the condensate in the liquid separation tank 3, when the liquid level of the condensate in the liquid separation tank 3 reaches the maximum value, the condensate discharging speed of the condensate in the liquid separation tank 3 is low, and the controller 13 receives a signal of the liquid level meter 14 and then controls the condensate recovery pump 9 to be started, so that the condensate discharging speed from the liquid separation tank 3 is increased; when the condensate liquid level in the liquid separation tank 3 reaches the lowest value, the controller 13 receives a signal of the liquid level meter 14 and then controls the condensate recovery pump 9 to be turned off, so that the condensate discharging speed from the liquid separation tank 3 is reduced, and steam is prevented from entering the condensate pipe 8;
if heat exchanger 2, knockout drum 3, centrifugal fan 7 or condensate recovery pump 9 break down the back, can close second stop valve 11, first stop valve 10 opens, and the steam of oxygen-eliminating device 1 is directly evacuated from steam evacuation pipe 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. The steam recovery system for emptying the deaerator comprises the deaerator, wherein a steam outlet of the deaerator is connected with a steam emptying pipe; the gas outlet of the liquid separation tank is connected with one end of an emptying pipe, and the other end of the emptying pipe is connected with the inlet of a centrifugal fan; a liquid outlet of the liquid separation tank is connected with one end of a condensate pipe, and the other end of the condensate pipe is connected with an inlet of a condensate recovery pump;
a first stop valve is arranged on the steam emptying pipe, and a second stop valve is arranged on the recovery pipe;
install pressure sensor on the degasification tower of oxygen-eliminating device, pressure sensor's signal output part is connected with the signal input part electricity of controller, centrifugal fan's signal input part with the signal output part electricity of controller is connected.
2. The deaerator emptying steam recovery system as claimed in claim 1, wherein a liquid level meter is installed in the liquid separation tank, a signal output end of the liquid level meter is electrically connected with a signal input end of the controller, and a signal input end of the condensate recovery pump is electrically connected with a signal output end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122328584.3U CN216205422U (en) | 2021-09-24 | 2021-09-24 | Deaerator emptying steam recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122328584.3U CN216205422U (en) | 2021-09-24 | 2021-09-24 | Deaerator emptying steam recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216205422U true CN216205422U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122328584.3U Active CN216205422U (en) | 2021-09-24 | 2021-09-24 | Deaerator emptying steam recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216205422U (en) |
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2021
- 2021-09-24 CN CN202122328584.3U patent/CN216205422U/en active Active
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