CN212252578U - Automatic water replenishing system of deaerator - Google Patents
Automatic water replenishing system of deaerator Download PDFInfo
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- CN212252578U CN212252578U CN202020242811.3U CN202020242811U CN212252578U CN 212252578 U CN212252578 U CN 212252578U CN 202020242811 U CN202020242811 U CN 202020242811U CN 212252578 U CN212252578 U CN 212252578U
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- feeding pump
- deaerator
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Abstract
The utility model relates to an automatic water replenishing system of a deaerator, which comprises a demineralized water tank, a water feeding pipeline, a water replenishing main path and a check valve, wherein a water outlet of the demineralized water tank is connected with a water replenishing inlet of the deaerator through the water feeding pipeline and the water replenishing main path in sequence; a water feeding pump and a water feeding pump outlet electric door are arranged on the water feeding pipeline, and the water feeding pump outlet electric door is in linkage control with the water feeding pump; the water supplementing main path is provided with a water supplementing electric regulating valve which is arranged at the water inlet end of the check valve; and the signal output ends of the water feeding pump, the water feeding pump outlet electric door and the water replenishing electric adjusting door are in electric signal connection with a DCS (distributed control system) or a PLC (programmable logic controller) control system. The utility model provides a after the condensate pump trouble of thermal power factory shut down or condensate system leads to the condensate water to cut off because of the unusual accident, the water supply that the oxygen-eliminating device moisturizing was not in time caused is interrupted, and then the forced shutdown accident that causes.
Description
Technical Field
The utility model relates to a oxygen-eliminating device moisturizing technical field especially relates to an automatic water charging system of oxygen-eliminating device.
Background
At present, a normal water replenishing source of a deaerator of a thermal power plant is condensed water, and a valve of a temporary water replenishing system of the deaerator is in a closed state; the condition that an accident possibly exists and the condensed water is interrupted, at the moment, the unit is required to reduce the load so as to reduce the evaporation amount and the water supply amount when the unit is checked and processed, the running requirement of the unit is ensured, meanwhile, the on-duty personnel are required to check and recover the states of all valves of the temporary water replenishing system of the deaerator so as to conduct a pipeline, and the deaerator is subjected to temporary water replenishing to continuously maintain the running of the unit.
In summary, if the operation of the condensate pump is stopped due to a fault of the condensate pump or the condensate system is broken due to an abnormal accident in the condensate water, once the water is not timely supplied to the deaerator, the unit has the possibility of tripping, so that great potential safety hazards are brought to the safe and stable operation of the unit.
SUMMERY OF THE UTILITY MODEL
The not enough to prior art, the utility model provides a deaerator automatic water supply system has solved and has stopped the fortune or the condensate system leads to the off-line back in the condensate water because of the unusual accident at thermal power factory condensate pump trouble, and the water supply that the deaerator moisturizing was not in time caused is interrupted, and then the accident of being forced to shut down that causes.
The utility model provides a technical scheme that its technical problem adopted is: the automatic water replenishing system of the deaerator comprises a demineralized water tank, a water feeding pipeline, a water replenishing main path and a check valve, wherein a water outlet of the demineralized water tank is connected with a water replenishing inlet of the deaerator sequentially through the water feeding pipeline and the water replenishing main path, the water feeding pipeline is communicated with the water replenishing main path, and the check valve is arranged in the water replenishing main path;
a water feeding pump and a water feeding pump outlet electric door are arranged on the water feeding pipeline, and the water feeding pump outlet electric door is in linkage control with the water feeding pump;
the water supplementing main path is provided with a water supplementing electric regulating valve which is arranged at the water inlet end of the check valve;
and the water feeding pump, the water feeding pump outlet electric door and the water supplementing electric adjusting door are all in electric signal connection with a DCS control system or a PLC control system.
The utility model provides an in the oxygen-eliminating device automatic water supply system's a preferred embodiment, the moisturizing is still equipped with the teletransmission manometer on the main road.
The utility model provides an in oxygen-eliminating device automatic water supply system's a preferred embodiment, still include the moisturizing bypass, be equipped with the bypass electrically operated gate on the moisturizing bypass, the end of intaking of moisturizing bypass is connected between the teletransmission manometer of moisturizing main road and the electronic accent door of moisturizing, and it connects between the electronic accent door of moisturizing main road and the check valve to go out the water end.
The utility model provides an in the oxygen-eliminating device automatic water supply system's a preferred embodiment, the moisturizing is still equipped with first electrically operated gate and second electrically operated gate respectively on the end of intaking of the electronic accent door of moisturizing and the moisturizing owner of play water end.
The utility model provides an in a preferred embodiment of oxygen-eliminating device automatic water supply system, the equal signal connection DCS control system or PLC control system of teletransmission manometer, bypass electrically operated gate, first electrically operated gate, second electrically operated gate.
The utility model provides an in the preferred embodiment of oxygen-eliminating device automatic water supply system, the water feeding pipeline is equipped with water feeding pump entry stop gate and water feeding pump export check gate respectively at the end of intaking of last water pump and play water end.
The utility model provides an in the preferred embodiment of oxygen-eliminating device automatic water supply system, the water feeding pipeline includes first water feeding pipeline and second water feeding pipeline, first water feeding pipeline and the parallelly connected setting of second water feeding pipeline.
Compared with the prior art, the utility model provides a deaerator automatic water charging system's beneficial effect is: the utility model can utilize the DCS control system or the PLC control system to control the water charging system to automatically supply water according to the detection water level of the water level sensor in the deaerator, thereby solving the problem that the water supply of the deaerator is not timely interrupted and the forced shutdown accident is caused after the condensate pump of the thermal power plant stops running due to faults or the condensate system is interrupted due to abnormal accidents; meanwhile, the accident handling time can be shortened, the accident expansion is avoided, manual operation can be reduced, and the reliability guarantee is provided for the accident handling process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is the utility model provides a deaerator automatic water charging system's structural principle picture.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the automatic water replenishing system for the deaerator in the embodiment includes a demineralized water tank 20, a water supply pipeline, a main water replenishing path 15, and a check valve 18, wherein a water outlet of the demineralized water tank 20 is connected to a water replenishing inlet of the deaerator 21 sequentially through the water supply pipeline and the main water replenishing path 15, the water supply pipeline is communicated with the main water replenishing path 15, and the check valve 18 is disposed in the main water replenishing path 15.
Preferably, the water supply pipeline of the present embodiment includes a first water supply pipeline 5 and a second water supply pipeline 10, and the first water supply pipeline 5 and the second water supply pipeline 10 are arranged in parallel.
And the first water feeding pipeline 5 and the second water feeding pipeline 10 are respectively provided with a water feeding pump 2 and 7 and a water feeding pump outlet electric door 4 and 9. Preferably, the first water supply pipeline 5 and the second water supply pipeline 10 of the present embodiment can be operated simultaneously or are spare to each other.
The first water feeding pipeline 5 and the second water feeding pipeline 10 are respectively provided with a water feeding pump inlet stop valve 1(6) and a water feeding pump outlet check valve 3(8) at the water inlet end and the water outlet end of the water feeding pump 2 (7); the inlet stop gate 1(6) of the upper water pump is a manual stop gate, and the unit is in a normally open state when in normal operation; the upper water pump outlet check valve 3(8) prevents the reverse flow of the desalted water to cause the reverse rotation of the non-operating upper water pump 2 (7).
And the water supplementing main path 15 is provided with a water supplementing electric adjusting valve 13, and the water supplementing electric adjusting valve 13 is arranged at the water inlet end of the check valve 18.
The water feeding pump 2(7), the water feeding pump outlet electric door 4(9) and the water supplementing electric adjusting door 13 are all connected with a DCS control system or a PLC control system (not shown in the figure) through electric signals.
This embodiment detects the water level (when the condensate water is interrupted) through the level sensor in the oxygen-eliminating device 21 to carry detection signal to DCS control system or PLC control system, DCS control system or PLC control system control water charging system carries out automatic water charging to oxygen-eliminating device 21.
The moisturizing electrically operated control door 13 of this embodiment normally is in the closed condition, and the aperture is adjustable, passes through DCS control system or PLC control system's logic control according to the water level of oxygen-eliminating device, can realize fast opening, fast closing function, also can input the aperture instruction as required manually.
Preferably, the electric door 4(9) at the outlet of the upper water pump and the upper water pump 2(7) form linkage control, that is: after the water feeding pump 2(7) is started, the electric door 4(9) at the outlet of the water feeding pump is opened in a linkage way, and vice versa; normally, the upper water pump outlet electric door 4(9) is in a closed state.
Preferably, the water feeding pump 2(7) of the embodiment adopts a 380V alternating current motor, and is in a stop state normally, and the water feeding pump can be automatically started and stopped by logic control judgment of a DCS control system or a PLC control system, or can be started and stopped by an instruction sent by an operator.
Preferably, the main water replenishing road 15 of this embodiment is further provided with a remote pressure gauge 11 for monitoring the output condition of the water feeding pump by a DCS control system or a PLC control system.
The water charging system of this embodiment still includes moisturizing bypass 17, be equipped with bypass electrically operated gate 16 on the moisturizing bypass 17, moisturizing bypass 17's the end of intaking is connected between the teletransmission manometer 11 of moisturizing main road 15 and the electronic accent door 13 of moisturizing, and the end of going out is connected between the electronic accent door 13 of moisturizing main road 15 and check valve 18, moisturizing bypass 17 as the standby pipeline of system.
Preferably, a first electric door 12 and a second electric door 14 are further respectively arranged on the water replenishing main path 15 at the water inlet end and the water outlet end of the water replenishing electric regulating door 13, and the first electric door 12 and the second electric door 14 are in an open state in a normal state.
In this embodiment, the remote pressure gauge 11, the bypass electric door 16, the first electric door 12, and the second electric door 14 are all electrically connected to a DCS control system or a PLC control system.
In the specific implementation: when a thermal power plant unit runs, if the condensate pump stops running due to faults or the condensate system is interrupted for a short time due to abnormal accidents, the liquid level of the deaerator can not be maintained in the accident treatment;
generally, after the liquid level of the deaerator is reduced to 2000mm, a logic judgment of a DCS control system or a PLC control system is used for sending a command to start a water feeding pump 2(7), at the moment, an electric door 4(9) at the outlet of the water feeding pump is interlocked and opened, meanwhile, a water replenishing electric adjusting door 13 of a main water replenishing circuit 15 is quickly and fully opened, and an operator can monitor the outlet pressure of the water feeding pump 2(7) through a remote pressure gauge 11 to judge whether the system is conducted or not and whether water replenishing is normal or not;
generally, when the liquid level of the deaerator reaches 3000mm, a logic judgment is carried out through a DCS (distributed control system) or a PLC (programmable logic controller) control system, and an instruction is sent to stop a water feeding pump 2(7), at the moment, an electric door 4(9) at the outlet of the water feeding pump is closed in an interlocking mode, meanwhile, a water replenishing electric regulating door 13 of a main water replenishing circuit 15 is closed quickly, and the opening degree of the water replenishing electric regulating door 13 can be adjusted according to the liquid level rising rate of the deaerator in the water replenishing process;
and the water supplementing bypass 17 is used as a standby pipeline, when the water supplementing rate is lower than the liquid level drop value of the deaerator, the operation is performed to send an instruction to start the water feeding pump 7(2), after another group of water feeding pipelines are switched on, the bypass electric door 16 is opened to supplement water to the deaerator, and after the water level is high, the bypass electric door 16 can be manually closed after one water feeding pump is stopped.
Specifically, the following are mentioned: the control of the DCS control system or the PLC control system on the water charging system in this embodiment is a conventional technical means in the technical field, and is a prior known technology.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a deaerator automatic water charging system which characterized in that: the water supply pipeline is communicated with the water supplementing main path, and the check valve is arranged on the water supplementing main path;
a water feeding pump and a water feeding pump outlet electric door are arranged on the water feeding pipeline, and the water feeding pump outlet electric door is in linkage control with the water feeding pump;
the water supplementing main path is provided with a water supplementing electric regulating valve which is arranged at the water inlet end of the check valve;
and the water feeding pump, the water feeding pump outlet electric door and the water supplementing electric adjusting door are all in electric signal connection with a DCS control system or a PLC control system.
2. The automatic water replenishing system of the deaerator of claim 1, characterized in that: and a remote transmission pressure gauge is further arranged on the water supplementing main road.
3. The automatic water replenishing system of the deaerator of claim 2, characterized in that: still include the moisturizing bypass, be equipped with the bypass electrically operated gate on the moisturizing bypass, the end of intaking of moisturizing bypass is connected between the teletransmission manometer of moisturizing main road and the electronic accent valve of moisturizing, and it connects between the electronic accent valve of moisturizing main road and the back valve to go out the water end.
4. The automatic water replenishing system of the deaerator of claim 3, characterized in that: and a first electric door and a second electric door are respectively arranged on the water replenishing main path of the water inlet end and the water outlet end of the water replenishing electric regulating door.
5. The automatic water replenishing system of the deaerator of claim 4, characterized in that: and the remote-transmission pressure gauge, the bypass electric door, the first electric door and the second electric door are all connected with a DCS (distributed control system) or a PLC (programmable logic controller) control system through electric signals.
6. The automatic water replenishing system of the deaerator of claim 1, characterized in that: the water feeding pipeline is provided with a water feeding pump inlet check valve and a water feeding pump outlet check valve respectively at the water inlet end and the water outlet end of the water feeding pump.
7. The automatic water replenishing system of the deaerator of claim 5, characterized in that: the water feeding pipeline comprises a first water feeding pipeline and a second water feeding pipeline, and the first water feeding pipeline and the second water feeding pipeline are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242811.3U CN212252578U (en) | 2020-03-02 | 2020-03-02 | Automatic water replenishing system of deaerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242811.3U CN212252578U (en) | 2020-03-02 | 2020-03-02 | Automatic water replenishing system of deaerator |
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| Publication Number | Publication Date |
|---|---|
| CN212252578U true CN212252578U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020242811.3U Active CN212252578U (en) | 2020-03-02 | 2020-03-02 | Automatic water replenishing system of deaerator |
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| Country | Link |
|---|---|
| CN (1) | CN212252578U (en) |
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2020
- 2020-03-02 CN CN202020242811.3U patent/CN212252578U/en active Active
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