CN219771895U - High-water-adding, hydrophobic and oxygen-adding device for power plant - Google Patents
High-water-adding, hydrophobic and oxygen-adding device for power plant Download PDFInfo
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- CN219771895U CN219771895U CN202223423749.6U CN202223423749U CN219771895U CN 219771895 U CN219771895 U CN 219771895U CN 202223423749 U CN202223423749 U CN 202223423749U CN 219771895 U CN219771895 U CN 219771895U
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- 230000002209 hydrophobic effect Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 404
- 239000001301 oxygen Substances 0.000 claims abstract description 247
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 247
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 244
- 238000004519 manufacturing process Methods 0.000 claims abstract description 49
- 238000003860 storage Methods 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 238000009792 diffusion process Methods 0.000 claims description 15
- 238000006213 oxygenation reaction Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 13
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The utility model relates to the technical field of corrosion protection of thermodynamic systems, and discloses a high-pressure water-adding, drainage and oxygen-adding device of a power plant, which comprises an oxygen-enriched water production tank, a first circulating pipeline, a first conveying pipeline, an oxygen-enriched water storage tank, a second circulating pipeline, a second conveying pipeline, a first heater and a control module, wherein the oxygen-enriched water production tank is used for producing oxygen-enriched water, the oxygen-enriched water is conveyed to the oxygen-enriched water storage tank through the first conveying pipeline, and the first circulating pipeline is used for circulating the oxygen-enriched water which does not reach dissolved oxygen and enters the oxygen-enriched water production tank; the oxygen-enriched water storage tank stores oxygen-enriched water and sends the oxygen-enriched water into the first heater through the second conveying pipeline, and the oxygen-enriched water which does not reach the dissolved oxygen amount enters the oxygen-enriched water production tank through the second circulating pipeline; the first heater is used for heating the oxygen-enriched water and conveying the heated oxygen-enriched water to the high-water-adding and drainage system; the control module electrically connects various pumps, valves, flow meters, etc. on the device. The device can automatically adjust the produced oxygen-enriched water quantity and concentration, can also adjust the temperature of the oxygen-enriched water, and avoids thermal shock to the hydrophobic pipeline.
Description
Technical Field
The utility model relates to the technical field of corrosion protection of thermodynamic systems, in particular to a high-pressure water-adding, drainage and oxygen-adding device of a power plant.
Background
The high-pressure dewatering system is a vapor-liquid two-phase flow system, a large amount of ammonia is distributed in a vapor space, the high-pressure dewatering system has low pH value, and flow accelerated corrosion is easy to occur, so that an oxygenation mode is generally adopted to improve the corrosion and scouring resistance of the interior of the system, but if too high oxygen is added into water supply, the additional dissolved oxygen can be caused to enter a main steam system, and the cracking and falling of an oxidation layer in an austenitic steel pipeline in the main steam system are accelerated. Therefore, the preferable oxygenation mode is 'the water supply system is subjected to low-oxygen treatment and the high-oxygen drainage system is subjected to independent oxygenation treatment'.
The publication No. CN111348759A discloses a high-water-adding hydrophobic automatic oxygenation system and an oxygenation method, which adopts air or oxygen-enriched water or dilute hydrogen peroxide and/or an alkalizing agent as an oxygenation medium, and can realize arbitrary switching and combination of three oxygenation mediums and oxygenation systems.
Regarding the mode of adding oxygen by taking air or oxygen as a medium, because the high-pressure hydrophobic vapor side pressure is higher, the improvement workload of the air compressor method is large, the solubility of gaseous oxygen is different under different temperature and pressure conditions, and the influence of load fluctuation of a power plant is added, so that the mode is difficult to realize accurate control of the dissolved oxygen; regarding the mode of oxygen-enriched water or hydrogen peroxide as a medium for oxygenation, although the dissolved oxygen amount can be accurately controlled, in the existing oxygen-enriched water or hydrogen peroxide oxygenation method, the water temperature of the oxygen-enriched water or hydrogen peroxide is low (about 20 ℃), and when the oxygen-enriched water or hydrogen peroxide is added into high-temperature water drainage (200 ℃ -300 ℃), thermal shock can be generated at cold and hot alternation positions, thermal stress is locally generated, and cracks and even leakage accidents can be caused to a water drainage pipeline after long-term operation.
Disclosure of Invention
The purpose of the utility model is that: the high-oxygen-adding hydrophobic oxygen adding device for the power plant can automatically adjust and accurately add the dissolved oxygen amount according to the change of the unit load, and meanwhile, the temperature of the added oxygen-enriched water is controlled to be 100-200 ℃, so that the thermal shock of the oxygen-enriched water to a hydrophobic pipeline is avoided.
In order to achieve the above purpose, the utility model provides a high-pressure water-adding, water-repellent and oxygen-adding device for a power plant, comprising:
the oxygen-enriched water production tank is provided with a first water inlet, a gas inlet and a first water outlet, wherein the first water inlet is used for communicating a water source, the gas inlet is used for communicating a gas source, and a production oxygen meter is arranged at the first water outlet;
the oxygen-enriched water storage tank is provided with a second water inlet and a second water outlet, a pressure gauge is arranged in the oxygen-enriched water storage tank, and an oxygen-enriched water delivery pump is arranged at the second water outlet;
the first heater is used for heating oxygen-enriched water, the first heater is provided with a third water inlet and a third water outlet, an oxygen-enriched water flow regulating valve is arranged at the third water inlet, and the third water outlet is used for being communicated with the high-pressure drainage system;
one end of the first circulating pipeline is communicated with the first water outlet, the other end of the first circulating pipeline is communicated with the first water inlet, and a first water return valve is arranged on the first circulating pipeline;
one end of the first conveying pipeline is communicated with the first water outlet, the other end of the first conveying pipeline is communicated with the second water inlet, and a conveying valve is arranged on the first conveying pipeline;
one end of the second circulating pipeline is communicated with the second water outlet, the other end of the second circulating pipeline is communicated with the first water inlet, and a second water return valve is arranged on the second circulating pipeline;
one end of the second conveying pipeline is communicated with the second water outlet, the other end of the second conveying pipeline is communicated with the third water inlet, and an oxygen-enriched water flowmeter is arranged on the second conveying pipeline; and
the control module is electrically connected with the production oxygen meter, the first water return valve, the conveying valve, the pressure meter, the oxygen-enriched water conveying pump, the second water return valve, the oxygen-enriched water flowmeter and the oxygen-enriched water flow regulating valve.
In some embodiments, the power plant high-pressure water-adding, draining and oxygen-adding device further comprises a third conveying pipeline, the first heater is further provided with an air inlet, a steam flow regulating valve is arranged at the air inlet, one end of the third conveying pipeline is communicated with the air inlet, the other end of the third conveying pipeline is used for introducing high-temperature steam, and the steam flow regulating valve is electrically connected with the control module.
In some embodiments, the inside of the first heater is provided with a water inlet chamber, a mixing chamber and a diffusion chamber which are sequentially communicated, the inner diameter of the mixing chamber gradually decreases along a first direction, the inner diameter of the diffusion chamber gradually increases along the first direction, a third water inlet is formed in one end of the water inlet chamber away from the diffusion chamber, a gas inlet is formed in the side wall of the mixing chamber, the gas inlet direction of the gas inlet and the first direction are arranged at an acute angle, and a third water outlet is formed in one end of the diffusion chamber away from the water inlet chamber.
In some embodiments, a corset-shaped recess is provided between the intake chamber and the mixing chamber.
In some embodiments, a constant pressure throat is provided between the mixing chamber and the diffuser chamber, the constant pressure throat extending in the first direction and having a uniform inner diameter.
In some embodiments, the power plant high-oxygenation device further comprises:
the first water inlet is communicated with the water inlet pipe, and a water inlet valve and a water feeding pump are arranged on the water inlet pipe;
the air inlet is communicated with the air inlet pipeline, and the air inlet pipeline is provided with an air inlet valve and a decompression voltage stabilizer;
the control module is electrically connected with the water inlet valve, the air inlet valve and the water supply pump.
In some embodiments, the high-pressure water-adding, draining and oxygen-adding device of the power plant further comprises a water distributor and an air distributor, wherein the water distributor and the air distributor are arranged in the oxygen-enriched water production tank, the water distributor is connected with the end part of the water inlet pipeline, the air distributor is connected with the end part of the air inlet pipeline, and the water distributor is arranged above the air distributor.
In some embodiments, the power plant high-pressure water-adding, draining and oxygen-adding device further comprises a second heater and a steam-water separator, wherein the second heater is used for heating desalted water, the second heater is provided with a fourth water inlet and a fourth outlet, the fourth water inlet is used for being communicated with a water source, a water supplementing valve is arranged at the fourth water inlet, and the water supplementing valve is electrically connected with the control module; the fourth outlet is communicated with one end of the steam-water separator, and the other end of the steam-water separator is communicated with the third conveying pipeline.
In some embodiments, the third conveying pipeline is provided with a thermometer, a steam flowmeter and a steam pressure gauge, and the thermometer, the steam flowmeter and the steam pressure gauge are all electrically connected with the control module.
In some embodiments, the power plant high-pressure water-adding, draining and oxygen-adding device further comprises a fourth conveying pipeline, one end of the fourth conveying pipeline is communicated with the third water outlet of the first heater, the other end of the fourth conveying pipeline is used for being communicated to the high-pressure water-adding and draining system, and a check valve and a stop valve are arranged on the fourth conveying pipeline.
Compared with the prior art, the high-water-adding, hydrophobic and oxygen-adding device for the power plant has the beneficial effects that:
the method comprises the steps that an oxygen-enriched water production tank is arranged and connected with a first circulating pipeline and a first conveying pipeline, a production oxygen meter is arranged at a first water outlet of the oxygen-enriched water production tank, when the production oxygen meter detects that the oxygen concentration of the oxygen-enriched water at the first water outlet does not reach a set value, the oxygen-enriched water returns to the oxygen-enriched water production tank from the first circulating pipeline, and when the production oxygen meter detects that the oxygen concentration of the oxygen-enriched water at the first water outlet reaches the set value, the oxygen-enriched water enters an oxygen-enriched water storage tank from the first conveying pipeline; the pressure gauge is arranged in the oxygen-enriched water storage tank, the oxygen-enriched water storage tank is connected with the second circulating pipeline and the second conveying pipeline, when the pressure gauge detects that the pressure in the oxygen-enriched water storage tank does not accord with a set value, the oxygen in the oxygen-enriched water storage tank excessively escapes, the oxygen concentration of the oxygen-enriched water in the oxygen-enriched water is greatly reduced, at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank enters the oxygen-enriched water production tank from the second circulating pipeline, when the pressure gauge detects that the pressure in the oxygen-enriched water storage tank accords with the set value, the oxygen concentration of the oxygen-enriched water in the oxygen-enriched water storage tank is kept in a preset range, and at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank enters the first heater from the second conveying pipeline; the first heater can heat the produced oxygen-enriched water to reach a set temperature value, and is communicated with the high-water-adding and drainage system so as to convey the heated oxygen-enriched water to the high-water-adding and drainage system; the high-oxygen-adding hydrophobic oxygen adding device of the power plant can automatically adjust and accurately add the dissolved oxygen water amount according to the change of the unit load, and simultaneously control the temperature of the added oxygen-enriched water to be 100-200 ℃, thereby avoiding the thermal shock of the oxygen-enriched water to the hydrophobic pipeline.
Drawings
FIG. 1 is a schematic diagram of a high-pressure water-and-oxygen-adding device of a power plant according to an embodiment of the utility model;
fig. 2 is a schematic structural view of a first heater according to an embodiment of the present utility model;
in the figure, 1, an oxygen-enriched water production tank; 2. a first circulation pipe; 3. a first delivery conduit; 4. an oxygen-enriched water storage tank; 5. a second circulation pipe; 6. a second delivery conduit; 7. a first heater; 71. a water inlet chamber; 72. a mixing chamber; 73. a diffusion chamber; 74; a recessed portion; 75. a constant pressure throat; 8. a third delivery conduit; 9. a water inlet pipe; 10. an air intake duct; 11. producing an oxygen meter; 12. a first water return valve; 13. a delivery valve; 14. an oxygen-enriched water delivery pump; 15. a second water return valve; 16. an oxygen enriched water flow meter; 17. an oxygen-enriched water flow regulating valve; 18. a steam flow regulating valve; 19. a water inlet valve; 20. a water feeding pump; 21. an intake valve; 22. a pressure reducing and stabilizing device; 23. a water distributor; 24. an air distributor; 25. a second heater; 26. a steam-water separator; 27. a water supplementing valve; 28. a thermometer; 29. a steam flow meter; 30. a steam pressure gauge; 31. a fourth conveying pipeline; 32. a non-return valve; 33. a stop valve; 34. a water source; 35. a gas source; 36. high-addition hydrophobic systems.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1, a high-pressure water-and-oxygen adding device for a power plant according to a preferred embodiment of the present utility model includes:
the oxygen-enriched water production tank 1 is provided with a first water inlet, a gas inlet and a first water outlet, wherein the first water inlet is used for communicating with the water source 34, the gas inlet is used for communicating with the gas source 35, the first water outlet is provided with a production oxygen meter 11, and the production oxygen meter 11 is used for monitoring the dissolved oxygen concentration of the liquid at the first water outlet;
the oxygen-enriched water storage tank 4 is provided with a second water inlet and a second water outlet, a pressure gauge is arranged in the oxygen-enriched water storage tank 4 and is used for detecting the pressure value in the oxygen-enriched water storage tank 4, and an oxygen-enriched water delivery pump 14 is arranged at the second water outlet;
the first heater 7 is used for heating oxygen-enriched water, the first heater 7 is provided with a third water inlet and a third water outlet, the third water inlet is provided with an oxygen-enriched water flow regulating valve 17, and the third water outlet is used for being communicated with the high-water-adding and draining system 36;
one end of the first circulating pipeline 2 is communicated with the first water outlet, the other end of the first circulating pipeline 2 is communicated with the first water inlet, and a first water return valve 12 is arranged on the first circulating pipeline 2;
one end of the first conveying pipeline 3 is communicated with the first water outlet, the other end of the first conveying pipeline 3 is communicated with the second water inlet, and a conveying valve 13 is arranged on the first conveying pipeline 3;
one end of the second circulating pipeline 5 is communicated with the second water outlet, the other end of the second circulating pipeline 5 is communicated with the first water inlet, and a second water return valve 15 is arranged on the second circulating pipeline 5;
one end of the second conveying pipeline 6 is communicated with the second water outlet, the other end of the second conveying pipeline 6 is communicated with the third water inlet, and an oxygen-enriched water flowmeter 16 is arranged on the second conveying pipeline 6; and
the control module is electrically connected with the production oxygen meter 11, the first water return valve 12, the delivery valve 13, the pressure meter, the oxygen-enriched water delivery pump 14, the second water return valve 15, the oxygen-enriched water flowmeter 16 and the oxygen-enriched water flow regulating valve 17.
According to the high-water-adding, water-draining and oxygen-adding device of the power plant based on the embodiment, through arranging the oxygen-enriched water production tank 1, the oxygen-enriched water production tank 1 is connected with the first circulating pipeline 2 and the first conveying pipeline 3, a production oxygen table 11 is arranged at a first water outlet of the oxygen-enriched water production tank 1, when the production oxygen table 11 detects that the oxygen-enriched water dissolved oxygen concentration at the first water outlet does not reach a set value, the oxygen-enriched water returns to the oxygen-enriched water production tank 1 from the first circulating pipeline 2, and when the production oxygen table 11 detects that the oxygen-enriched water dissolved oxygen concentration at the first water outlet reaches the set value, the oxygen-enriched water enters the oxygen-enriched water storage tank 4 from the first conveying pipeline 3; the pressure gauge is arranged in the oxygen-enriched water storage tank 4, the oxygen-enriched water storage tank 4 is connected with the second circulation pipeline 5 and the second conveying pipeline 6, when the pressure gauge detects that the pressure in the oxygen-enriched water storage tank 4 does not accord with a set value, the oxygen in the oxygen-enriched water storage tank 4 excessively escapes, the oxygen concentration of the oxygen-enriched water is greatly reduced, at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank 4 enters the oxygen-enriched water production tank 1 from the second circulation pipeline 5, when the pressure gauge detects that the pressure in the oxygen-enriched water storage tank 4 accords with the set value, the oxygen concentration of the oxygen-enriched water in the oxygen-enriched water storage tank 4 is kept in a preset range, and at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank 4 enters the first heater 7 from the second conveying pipeline 6; the first heater 7 can heat the produced oxygen-enriched water to reach a set temperature value, and the first heater 7 is communicated with the high-pressure dewatering system 36 so as to convey the heated oxygen-enriched water to the high-pressure dewatering system 36; the high-oxygen-adding hydrophobic oxygen adding device of the power plant can automatically adjust and accurately add the dissolved oxygen water amount according to the change of the unit load, and simultaneously control the temperature of the added oxygen-enriched water to be 100-200 ℃, thereby avoiding the thermal shock of the oxygen-enriched water to the hydrophobic pipeline.
In some embodiments, the high-pressure water-adding, draining and oxygen-adding device of the power plant further comprises a third conveying pipeline 8, the first heater 7 is further provided with an air inlet, a steam flow regulating valve 18 is arranged at the air inlet, one end of the third conveying pipeline 8 is communicated with the air inlet, the other end of the third conveying pipeline 8 is used for introducing high-temperature steam, and the steam flow regulating valve 18 is electrically connected with the control module.
In the above embodiment, by providing the air inlet on the first heater 7 and introducing the high-temperature steam, the heating mode of mixing the oxygen-enriched water with the high-temperature steam to increase the temperature can be adopted, and the control module controls the opening degrees of the oxygen-enriched water flow regulating valve 17 and the steam flow regulating valve 18, so that the heating degree of the oxygen-enriched water can be regulated, and the temperature of the oxygen-enriched water reaches the set value.
The opening of the steam flow regulating valve 18 can be regulated according to a regulating coefficient K, which is defined by a law formula of conservation of heat exchange between water and saturated steam:
4.2×m water and its preparation method ×(t Setting up -t Water and its preparation method )＝Km Water and its preparation method ×r+Km Water and its preparation method ×(t Steam generation -t Setting up )
The calculation results are that: k=4.2× (t Setting up -t Water and its preparation method )/(r+t Steam generation -t Setting up )
Wherein r is latent heat of phase change, and the unit is kJ/kg;
m water and its preparation method For the quality of oxygen-enriched water, km Water and its preparation method The unit of the steam is kg;
t water and its preparation method To the temperature of the oxygen enriched water entering the first heater 7, t Steam generation To the temperature of the steam entering the first heater 7, t Setting up The unit is the temperature of the oxygen-enriched water which is set and exits the first heater 7 from the third water outlet.
As shown in fig. 2, in some embodiments, an intake chamber 71, a mixing chamber 72 and a diffusion chamber 73 are sequentially disposed in the first heater 7, the inner diameter of the mixing chamber 72 gradually decreases along a first direction, the inner diameter of the diffusion chamber 73 gradually increases along the first direction, a third water inlet is disposed at one end of the intake chamber 71 away from the diffusion chamber 73, an air inlet is disposed on a side wall of the mixing chamber 72, the air inlet direction of the air inlet is disposed at an acute angle with respect to the first direction, and a third water outlet is disposed at one end of the diffusion chamber 73 away from the intake chamber 71.
In the above embodiment, the high-temperature steam is injected into the mixing chamber 72 from the air inlet along the flowing direction of the oxygen-enriched water, and the oxygen-enriched water and the high-temperature steam are fully mixed and converted into pressure by gradually reducing the inner diameter of the mixing chamber 72 and gradually increasing the inner diameter of the diffusion chamber 73, so that the pressure and the temperature of the oxygen-enriched water obtained at the third water outlet are higher than those of the oxygen-enriched water obtained at the third water inlet.
Preferably, the first heater 7 is made of stainless steel, and the third conveying pipeline 8 is welded with the air inlet of the first heater 7.
In some embodiments, a corset-shaped concave portion is disposed between the intake chamber 71 and the mixing chamber 72, and by disposing the corset-shaped concave portion between the intake chamber 71 and the mixing chamber 72, the oxygen-enriched water with higher pressure forms a supersonic jet when passing through the concave portion, so that the oxygen-enriched water is fully mixed with the high-temperature steam after entering the mixing chamber 72.
In some embodiments, a constant pressure throat 74 is provided between the mixing chamber 72 and the diffuser chamber 73; a recessed portion; 75, a constant pressure throat 74; a recessed portion; 75 extend in a first direction and have a uniform inner diameter. By providing a constant pressure throat 74 between the mixing chamber 72 and the diffuser chamber 73; a recessed portion; 75 are used for transition so that the oxygen-enriched water accelerates sufficiently before entering the diffuser chamber 73 to build up sufficient velocity in the diffuser chamber 73 to convert to a higher pressure.
In other embodiments, the first heater 7 may also be an electric heater, where the electric heater has a third water inlet and a third water outlet, the oxygen-enriched water enters the electric heater from the third water inlet, the electric heater heats and pressurizes the oxygen-enriched water to a set temperature and pressure, and the oxygen-enriched water treated by the electric heater flows out from the third water outlet and enters the high-water-adding and drainage system 36.
In some embodiments, the high-water-adding, draining and oxygen-adding device of the power plant further comprises a water inlet pipeline 9 and an air inlet pipeline 10, wherein the first water inlet is communicated with the water inlet pipeline 9, and the water inlet pipeline 9 is provided with a water inlet valve 19 and a water supply pump 20; the air inlet is communicated with an air inlet pipeline 10, and an air inlet valve 21 and a decompression voltage stabilizer 22 are arranged on the air inlet pipeline 10; the control module is electrically connected with the water inlet valve 19, the air inlet valve 21 and the water supply pump 20.
In some embodiments, the high-pressure water-adding, draining and oxygen-adding device of the power plant further comprises a water distributor 23 and an air distributor 24 which are arranged in the oxygen-enriched water production tank 1, wherein the water distributor 23 is connected with the end part of the water inlet pipeline 9, the air distributor 24 is connected with the end part of the air inlet pipeline 10, and the water distributor 23 is arranged above the air distributor 24. The water distributor 23 is arranged to spray water into the oxygen-enriched water production tank 1 in a spraying mode, and the sprayed water mist is fully mixed with oxygen or air sprayed by the air distributor 24 when falling downwards, so that the oxygen-enriched water is formed.
In some embodiments, the high-water-adding, draining and oxygen-adding device of the power plant further comprises a second heater 25 and a steam-water separator 26, wherein the second heater 25 is used for heating desalted water, the second heater 25 is provided with a fourth water inlet and a fourth outlet, the fourth water inlet is used for being communicated with a water source 34, a water supplementing valve 27 is arranged at the fourth water inlet, and the water supplementing valve 27 is electrically connected with the control module; the fourth export communicates to the one end of catch water 26, and the other end of catch water 26 communicates to third pipeline 8, and catch water 26 carries out vapour-liquid separation with the demineralized water after the second heater 25 heat treatment, and the high temperature steam that separates gets into first heater 7, and the liquid demineralized water that separates returns to second heater 25 again and heats.
In some embodiments, the third conveying pipeline 8 is provided with a thermometer 28, a steam flowmeter 29 and a steam pressure gauge 30, and the thermometer 28, the steam flowmeter 29 and the steam pressure gauge 30 are all electrically connected with the control module.
In some embodiments, the high-pressure water-adding, draining and oxygen-adding device of the power plant further comprises a fourth conveying pipeline 31, one end of the fourth conveying pipeline 31 is communicated with the third water outlet of the first heater 7, the other end of the fourth conveying pipeline 31 is used for being communicated with the high-pressure water-adding and draining system 36, and a check valve 32 and a stop valve 33 are arranged on the fourth conveying pipeline 31. The check valve 32 is used to prevent the high-addition drain in the high-addition drain system 36 from flowing back to the first heater 7, and the shut-off valve 33 is used to isolate the high-addition drain.
The utility model relates to a high-water-adding, hydrophobic and oxygen-adding device of a power plant, which comprises the following working processes:
the water supply pump 20 on the water inlet pipeline 9 supplies water to the water distributor 23, oxygen or air is supplied to the air distributor 24 from the air inlet pipeline 10, the water distributor 23 sprays water into the oxygen-enriched water production tank 1, the air distributor 24 sprays air or oxygen into the oxygen-enriched water production tank 1, the water and the air are fully mixed in the oxygen-enriched water production tank 1 and flow out from the first water outlet, the first water outlet is provided with the production oxygen meter 11 for detecting the dissolved oxygen amount of the liquid flowing out, when the dissolved oxygen amount is insufficient, the liquid continuously flows back to the oxygen-enriched water production tank 1 from the first circulation pipeline 2 to be continuously mixed with the air, and the liquid enters the first transportation pipeline 3 to be supplied to the oxygen-enriched water storage tank 4 when the dissolved oxygen amount reaches a set value;
the pressure gauge is arranged in the oxygen-enriched water storage tank 4 to detect the pressure value in the oxygen-enriched water storage tank 4, when the pressure value is overlarge, the excessive precipitation of oxygen in the oxygen-enriched water in the storage tank is indicated, the oxygen-enriched water dissolved oxygen is reduced, at the moment, the oxygen-enriched water in the storage tank continuously returns to the oxygen-enriched water production tank 1 from the second circulating pipeline 5, when the pressure value is in a reasonable range, the oxygen content of the oxygen-enriched water in the oxygen-enriched water storage tank 4 is indicated to be in a normal set range, and at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank 4 enters the first heater 7 from the second conveying pipeline 6;
the second heater 25 is connected with a water source 34 to heat the desalted water, the heated desalted water is subjected to vapor-liquid separation in vapor-water separation, the separated high-temperature steam enters the first heater 7, and the separated liquid desalted water continuously returns to the second heater 25 to be heated;
the first heater 7 is provided with a third water inlet and an air inlet, an oxygen-enriched water flow regulating valve 17 is arranged at the third water inlet, a steam flow regulating valve 18 is arranged at the air inlet, the third water inlet is connected with the second conveying pipeline 6, the air inlet is connected with the third conveying pipeline 8, the first heater 7 is used for mixing oxygen-enriched water with high-temperature steam so as to heat and pressurize the oxygen-enriched water, and the heated and pressurized oxygen-enriched water enters the high-water-adding drainage system 36;
in operation, the control module coordinates and controls the first water return valve 12, the delivery valve 13, the oxygen-enriched water delivery pump 14, the second water return valve 15, the oxygen-enriched water flow regulating valve 17, the steam flow regulating valve 18, the water inlet valve 19, the water delivery pump 20, the air inlet valve 21 and the water supplementing valve 27 according to the production oxygen meter 11, the pressure meter, the oxygen-enriched water flow meter 16, the thermometer 28, the steam flow meter 29 and the steam pressure meter 30.
In summary, the embodiment of the utility model provides a high-water-adding, draining and oxygen adding device of a power plant, which is characterized in that an oxygen-enriched water production tank 1 is arranged, the oxygen-enriched water production tank 1 is connected with a first circulating pipeline 2 and a first conveying pipeline 3, a production oxygen meter 11 is arranged at a first water outlet of the oxygen-enriched water production tank 1, when the production oxygen meter 11 detects that the oxygen-enriched water dissolved oxygen concentration at the first water outlet does not reach a set value, oxygen-enriched water returns to the oxygen-enriched water production tank 1 from the first circulating pipeline 2, and when the production oxygen meter 11 detects that the oxygen-enriched water dissolved oxygen concentration at the first water outlet reaches the set value, the oxygen-enriched water enters an oxygen-enriched water storage tank 4 from the first conveying pipeline 3; the pressure gauge is arranged in the oxygen-enriched water storage tank 4, the oxygen-enriched water storage tank 4 is connected with the second circulation pipeline 5 and the second conveying pipeline 6, when the pressure gauge detects that the pressure in the oxygen-enriched water storage tank 4 does not accord with a set value, the oxygen in the oxygen-enriched water storage tank 4 excessively escapes, the oxygen concentration of the oxygen-enriched water is greatly reduced, at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank 4 enters the oxygen-enriched water production tank 1 from the second circulation pipeline 5, when the pressure gauge detects that the pressure in the oxygen-enriched water storage tank 4 accords with the set value, the oxygen concentration of the oxygen-enriched water in the oxygen-enriched water storage tank 4 is kept in a preset range, and at the moment, the oxygen-enriched water in the oxygen-enriched water storage tank 4 enters the first heater 7 from the second conveying pipeline 6; the first heater 7 can heat the produced oxygen-enriched water to reach a set temperature value, and the first heater 7 is communicated with the high-pressure dewatering system 36 so as to convey the heated oxygen-enriched water to the high-pressure dewatering system 36; the high-oxygen-adding hydrophobic oxygen adding device of the power plant can automatically adjust and accurately add the dissolved oxygen water amount according to the change of the unit load, and simultaneously control the temperature of the added oxygen-enriched water to be 100-200 ℃, thereby avoiding the thermal shock of the oxygen-enriched water to the hydrophobic pipeline.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. The utility model provides a high hydrophobic oxygenation device that adds of power plant which characterized in that includes:
the oxygen-enriched water production tank is provided with a first water inlet, a gas inlet and a first water outlet, wherein the first water inlet is used for communicating a water source, the gas inlet is used for communicating a gas source, and a production oxygen meter is arranged at the first water outlet;
the oxygen-enriched water storage tank is provided with a second water inlet and a second water outlet, a pressure gauge is arranged in the oxygen-enriched water storage tank, and an oxygen-enriched water delivery pump is arranged at the second water outlet;
the first heater is used for heating oxygen-enriched water, the first heater is provided with a third water inlet and a third water outlet, an oxygen-enriched water flow regulating valve is arranged at the third water inlet, and the third water outlet is used for being communicated with the high-pressure drainage system;
one end of the first circulating pipeline is communicated with the first water outlet, the other end of the first circulating pipeline is communicated with the first water inlet, and a first water return valve is arranged on the first circulating pipeline;
one end of the first conveying pipeline is communicated with the first water outlet, the other end of the first conveying pipeline is communicated with the second water inlet, and a conveying valve is arranged on the first conveying pipeline;
one end of the second circulating pipeline is communicated with the second water outlet, the other end of the second circulating pipeline is communicated with the first water inlet, and a second water return valve is arranged on the second circulating pipeline;
one end of the second conveying pipeline is communicated with the second water outlet, the other end of the second conveying pipeline is communicated with the third water inlet, and an oxygen-enriched water flowmeter is arranged on the second conveying pipeline; and
the control module is electrically connected with the production oxygen meter, the first water return valve, the conveying valve, the pressure meter, the oxygen-enriched water conveying pump, the second water return valve, the oxygen-enriched water flowmeter and the oxygen-enriched water flow regulating valve.
2. The high-pressure water-adding, drainage and oxygenation device for a power plant according to claim 1, further comprising a third conveying pipeline, wherein the first heater is further provided with an air inlet, a steam flow regulating valve is arranged at the air inlet, one end of the third conveying pipeline is communicated with the air inlet, the other end of the third conveying pipeline is used for introducing high-temperature steam, and the steam flow regulating valve is electrically connected with the control module.
3. The high-pressure water-adding, drainage and oxygen-adding device of a power plant according to claim 2, wherein an intake chamber, a mixing chamber and a diffusion chamber which are sequentially communicated are arranged in the first heater, the inner diameter of the mixing chamber gradually decreases along a first direction, the inner diameter of the diffusion chamber gradually increases along the first direction, a third water inlet is formed in one end, far away from the diffusion chamber, of the intake chamber, the air inlet is formed in the side wall of the mixing chamber, the air inlet direction of the air inlet and the first direction are arranged at an acute angle, and a third water outlet is formed in one end, far away from the intake chamber, of the diffusion chamber.
4. The high-pressure water-adding, hydrophobic and oxygen-adding device for a power plant according to claim 3, wherein a girdle-shaped concave part is arranged between the water inlet chamber and the mixing chamber.
5. A plant high-pressure water-and-oxygen-adding device according to claim 3, wherein a constant-pressure throat is arranged between the mixing chamber and the diffusion chamber, and the constant-pressure throat extends along the first direction and has a uniform inner diameter.
6. The power plant high-oxygenation device of claim 1, further comprising:
the first water inlet is communicated with the water inlet pipe, and a water inlet valve and a water feeding pump are arranged on the water inlet pipe;
the air inlet is communicated with the air inlet pipeline, and the air inlet pipeline is provided with an air inlet valve and a decompression voltage stabilizer;
the control module is electrically connected with the water inlet valve, the air inlet valve and the water supply pump.
7. The high-pressure water-adding, drainage and oxygen-adding device for a power plant according to claim 6, further comprising a water distributor and an air distributor which are arranged in the oxygen-enriched water production tank, wherein the water distributor is connected with the end part of the water inlet pipeline, the air distributor is connected with the end part of the air inlet pipeline, and the water distributor is arranged above the air distributor.
8. The high-water-adding, hydrophobic and oxygen-adding device of a power plant according to claim 2, further comprising a second heater and a steam-water separator, wherein the second heater is used for heating desalted water, the second heater is provided with a fourth water inlet and a fourth outlet, the fourth water inlet is used for being communicated with a water source, a water supplementing valve is arranged at the fourth water inlet, and the water supplementing valve is electrically connected with the control module; the fourth outlet is communicated with one end of the steam-water separator, and the other end of the steam-water separator is communicated with the third conveying pipeline.
9. The high-pressure water-adding, drainage and oxygen-adding device for a power plant according to claim 8, wherein a thermometer, a steam flowmeter and a steam pressure gauge are arranged on the third conveying pipeline, and the thermometer, the steam flowmeter and the steam pressure gauge are all electrically connected with the control module.
10. The high-pressure water-adding, draining and oxygen-adding device for a power plant according to claim 1, further comprising a fourth conveying pipeline, wherein one end of the fourth conveying pipeline is communicated with the third water outlet of the first heater, the other end of the fourth conveying pipeline is communicated with a high-pressure water-adding and draining system, and a check valve and a stop valve are arranged on the fourth conveying pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223423749.6U CN219771895U (en) | 2022-12-19 | 2022-12-19 | High-water-adding, hydrophobic and oxygen-adding device for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223423749.6U CN219771895U (en) | 2022-12-19 | 2022-12-19 | High-water-adding, hydrophobic and oxygen-adding device for power plant |
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| Publication Number | Publication Date |
|---|---|
| CN219771895U true CN219771895U (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223423749.6U Active CN219771895U (en) | 2022-12-19 | 2022-12-19 | High-water-adding, hydrophobic and oxygen-adding device for power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219771895U (en) |
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2022
- 2022-12-19 CN CN202223423749.6U patent/CN219771895U/en active Active
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