CN214581018U - System for increasing boiler feed water temperature during blow tube - Google Patents
System for increasing boiler feed water temperature during blow tube Download PDFInfo
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- CN214581018U CN214581018U CN202120685529.7U CN202120685529U CN214581018U CN 214581018 U CN214581018 U CN 214581018U CN 202120685529 U CN202120685529 U CN 202120685529U CN 214581018 U CN214581018 U CN 214581018U
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Abstract
The utility model relates to a system for improve boiler feedwater temperature during blowpipe, this system includes the water supply line, set up the oxygen-eliminating device on the water supply line, the export intercommunication of oxygen-eliminating device has the water-feeding pump, the export intercommunication high pressure heater group of water supply pump, the export of high pressure heater group can communicate with the boiler water inlet, be connected with the auxiliary steam header on the oxygen-eliminating device, the auxiliary steam header can be through the cold again to the cold pipeline or high pressure heater group of auxiliary steam header passageway intercommunication, the high pressure heater group can be through the cold again to the cold pipeline or auxiliary steam header of heater passageway intercommunication, the auxiliary steam header can be used for heating the oxygen-eliminating device in the feedwater and can be used for heating up to the feedwater heating through high pressure heater group. The utility model discloses not only use the oxygen-eliminating device heating feedwater, will assist the inside steam of vapour header moreover and lead to the high pressure heater group, reduced oxygen-eliminating device temperature and heat accumulation, reduced calorific loss, improved heat utilization rate.
Description
Technical Field
The utility model relates to a thermal power technology field especially relates to a system for improve boiler feedwater temperature during blowpipe.
Background
In a thermal power generating set, a steam turbine has high quality requirements on steam entering the steam turbine, if impurities enter the steam turbine, a rotating impeller is damaged, a newly-built unit, a boiler and a steam pipeline relate to a modified unit, in order to remove impurities such as welding slag, oxide skin and rust generated in the manufacturing and installing processes of the boiler and the steam pipeline, a boiler blow pipe is needed before the steam turbine washes a car, and the boiler blow pipe is used for blowing a superheater, a reheater, a main steam pipeline, a reheat pipeline and the like by using high-temperature and high-pressure steam generated by the boiler. During the period of blowing, the boiler needs ignition to be put into operation, wherein the influence of the feed water temperature on the operation of the boiler is obvious and mainly represented as follows:
(1) for the boiler, the input of fuel can be reduced and the fuel can be saved by increasing the feed water temperature under the same steam parameters;
(2) the temperature difference of heat exchange can be reduced by increasing the water supply temperature of the boiler, and the efficiency of the boiler is improved;
(3) if the boiler feed water temperature is too low, the wall temperature of a boiler superheater and a reheater can be over-heated, and the operation safety of the boiler is affected.
The feed water temperature of the boiler should therefore be raised as much as possible before and during normal operation of the boiler. Because during the blowpipe, steam extraction backheat system can't drop into, can not improve the feedwater temperature through throwing into high, low pressure heater, the method that mainly adopts at present is supplying vapour to the auxiliary steam header through starting the boiler, thereby the rethread auxiliary steam header supplies vapour to the oxygen-eliminating device and heats the feedwater, but at the actual blowpipe in-process, adopt this method to improve boiler feedwater temperature and often have many restriction factors, for example: the capacity of a starting boiler equipped by some units is small, and the flow of auxiliary steam is not enough to heat the feed water to a higher temperature; the deaerator has large volume, large capacity and large heat storage, and needs to be put into the deaerator for long heating time before feeding water to the boiler, so that the water feeding time of the boiler is slowed down; to obtain higher feedwater temperature, need increase the steam flow that the auxiliary steam supplied the oxygen-eliminating device, the oxygen-eliminating device probably can produce great vibration under the high condition of steam flow, influences the operation safety to before not carrying out hot state and washing, the inside temperature of oxygen-eliminating device is higher, and debris can wash out more easily, probably leads to feed pump entry filter screen to block up, needs the clearance of blowing out, delays blowpipe job schedule. Aiming at the problems, for a thermal power plant with two units, an adjacent machine heating pipeline is generally designed at present, a cold re-steam source of the adjacent unit is adopted to heat a certain high-pressure heater of the thermal power plant through the adjacent machine heating pipeline, but the system does not always have operation conditions for the first unit; there are also few literature reports, adopt adjacent quick-witted auxiliary steam to be connected to adjacent quick-witted heating pipeline, then heat a certain one-level high heating of this machine, but also come from same start-up boiler to newly-built first-phase unit adjacent quick-witted auxiliary steam source, through adjacent quick-witted pipeline heating this machine high heating process near seeking far away, steam pipe is long, and the warm pipe time is long when putting into operation, does not increase external heat source yet, does not have general suitability.
Thus, the present inventors have developed a system for increasing boiler feed water temperature during a lance tube to overcome the deficiencies of the prior art, based on experience and practice of the relevant industry over the years.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system for improve boiler feedwater temperature during blowpipe not only uses the oxygen-eliminating device heating feedwater, will assist the steam header inside part moreover and lead to the high pressure heater group, has reduced oxygen-eliminating device temperature and heat accumulation, has reduced calorific loss, has improved heat utilization rate.
The utility model aims at realizing like this, a system for improving boiler feedwater temperature during blowpipe, including the water supply line, set up the oxygen-eliminating device on the water supply line, the export intercommunication of oxygen-eliminating device has the water-feeding pump, the export intercommunication high pressure heater group of water-feeding pump, the export of high pressure heater group can communicate with the boiler water inlet, be connected with the auxiliary steam header on the oxygen-eliminating device, the auxiliary steam header can be through the cold again to the cold pipeline or high pressure heater group of auxiliary steam header passageway intercommunication, the high pressure heater group can be through the cold again to the cold pipeline or the auxiliary steam header of heater passageway intercommunication, the auxiliary steam header can be used for heating the oxygen-eliminating device in feed water and can be used for right the process the feedwater heating of high pressure heater group heaies up.
The utility model discloses a in a preferred embodiment, the high pressure heater group including the order connect in series in water supply line's first high pressure feed water heater, second high pressure feed water heater and third high pressure feed water heater, first high pressure feed water heater can communicate with the boiler water inlet, third high pressure feed water heater with the feed water pump is connected, cold again to assist vapour header passageway with cold again to heater passageway can communicate assist vapour header with second high pressure feed water heater.
The utility model discloses an in a preferred embodiment, set up hydrophobic export on the second high pressure feed water heater, hydrophobic export can through hydrophobic pipeline with the oxygen-eliminating device intercommunication.
The utility model discloses an in a preferred embodiment, cold again to the auxiliary steam header passageway with cold again to setting up the connecting pipe to can dismantle between the heater passageway, cold again to the auxiliary steam header passageway and cold again can dismantle between the pipeline and set up first check valve.
The utility model discloses an in a preferred embodiment, set up first header connector and second header connector on the auxiliary steam header, first header connector can with the oxygen-eliminating device intercommunication, the second header connector can with cold to auxiliary steam header passageway intercommunication again.
The utility model discloses an in a preferred embodiment, cold again to be provided with first adjusting valve on the auxiliary steam header passageway, first adjusting valve is used for adjusting auxiliary steam header flow direction second high pressure feed water heater's high temperature steam flow.
In a preferred embodiment of the present invention, a first manual stop valve is connected between the first adjusting valve and the second connection port, and a first electric stop valve is connected between the first adjusting valve and the connection pipe.
In a preferred embodiment of the present invention, a second check valve and a second electric stop valve are sequentially connected between the connecting pipe and the second high pressure heater.
The utility model discloses an among the preferred embodiment, first header connector with order connection has fourth electronic stop valve, third adjusting valve and third check valve between the oxygen-eliminating device, third adjusting valve is used for adjusting the auxiliary steam header flow direction the high temperature steam flow of oxygen-eliminating device.
In a preferred embodiment of the present invention, the drain line is provided with a third electric stop gate, a second adjusting valve and a second manual valve in sequence from the drain outlet, and the second adjusting valve is used for adjusting the water level of the second high pressure heater.
From above, the utility model provides a system for improve boiler feedwater temperature during blowpipe has following beneficial effect:
the utility model provides a system for improve boiler feedwater temperature during blowpipe not only uses the oxygen-eliminating device to heat the feedwater, and leads the partial auxiliary steam in the auxiliary steam header to the high-pressure heater group, under the condition of the same auxiliary steam flow, reduces the flow that the oxygen-eliminating device utilized the auxiliary steam, compares with the method that the oxygen-eliminating device singly adopted the heating feedwater, has reduced oxygen-eliminating device temperature and heat accumulation, has reduced calorific loss, has improved heat utilization ratio, simultaneously faster improvement boiler feedwater temperature, accelerate the boiler feedwater; the flow rate of auxiliary steam utilization can be increased, and the stability and safety of the operation of the deaerator are ensured while the feed water temperature is increased; the improvement of the feed water temperature is beneficial to controlling the temperature of the main reheat steam, the safety of the operation of the boiler is improved, the efficiency of the boiler is improved, and part of fuel is saved.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: is a schematic diagram of a system for increasing boiler feed water temperature during a blow pipe period of the present invention.
FIG. 2: for during the unit normal operating the utility model discloses an assist vapour header and second high pressure feed water heater's connected state schematic diagram.
FIG. 3: the auxiliary steam header and the second high-pressure heater are connected in a blowing pipe period.
In the figure:
100. a system for increasing boiler feed water temperature during a blow tube period;
1. a water supply pipe;
2. a deaerator;
3. a feed pump;
4. a high-pressure heater group; 41. a first high pressure heater; 42. a second high-pressure heater 43, a third high-pressure heater;
5. an auxiliary steam header; 51. a first header connection port; 52. a second header connection port;
61. cooling and then transferring to an auxiliary steam header channel; 62. cooling and then to the heater channel; 63. a connecting pipe; 64. a first check valve; 65. a first regulating valve; 66. a first manual shut-off valve; 67. a first electrically operated shutoff valve; 68. a second check valve; 69. a second electrically operated shutoff valve;
7. a drain line; 71. a third electrically operated shutoff gate; 72. a second regulating valve; 73. a second manual valve;
81. a fourth electric stop gate; 82. a third regulating valve; 83. a third check valve;
9. a boiler; 91. a boiler water inlet; 92. cold re-piping.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of explanation only and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to fig. 3, the utility model provides a system 100 that improves boiler feedwater temperature during blowpipe, including water supply line 1, water supply line 1 is last to set up oxygen-eliminating device 2, the export intercommunication of oxygen-eliminating device 2 has water feed pump 3, water feed pump 3's export intercommunication high pressure heater group 4, the export of high pressure heater group 4 can communicate with boiler water inlet 91 (prior art), be connected with on the oxygen-eliminating device 2 and assist vapour header 5 (assist vapour for high temperature steam, can make its intensification with the feedwater heat transfer), assist vapour header 5 can be through the cold to assist vapour header passageway 61 intercommunication cold pipeline 92 again (prior art, the high temperature steam flow that the boiler produced is cold pipeline again) or high pressure heater group 4, high pressure heater group 4 can be through the cold to heater passageway 62 intercommunication cold pipeline 92 or assist vapour header 5 again, assist vapour header 5 can be used for heating feedwater in the oxygen-eliminating device and can be used for heating the heating temperature rise to the heating through high pressure heater group 4.
During normal unit operation, as shown in fig. 2, the cold to auxiliary steam header channel 61 and the cold to heater channel 62 are both in communication with the cold re-pipe 92 and are relatively close to each other; high-temperature steam is supplied to the high-pressure heater group 4 and the auxiliary steam header 5 respectively; as shown in fig. 3, during the commissioning of the unit and the blowing of the boiler, the cold re-pipe 92 needs to be purged by high-temperature steam generated by the boiler 9, at this time, the cold re-steam header channel 61 and the cold re-steam heater channel 62 are disconnected from the cold re-pipe 92, the cold re-steam header channel 61 and the cold re-steam heater channel 62 are communicated, the high-temperature steam in the auxiliary steam header 5 can be led to the high-pressure heater unit 4, and at this time, the high-temperature steam in the auxiliary steam header 5 comes from other heat sources, such as a start boiler, an adjacent unit and the like.
The utility model provides a system for improve boiler feedwater temperature during blowpipe not only uses the oxygen-eliminating device to heat the feedwater, and leads the partial auxiliary steam in the auxiliary steam header to the high-pressure heater group, under the condition of the same auxiliary steam flow, reduces the flow that the oxygen-eliminating device utilized the auxiliary steam, compares with the method that the oxygen-eliminating device singly adopted the heating feedwater, has reduced oxygen-eliminating device temperature and heat accumulation, has reduced calorific loss, has improved heat utilization ratio, simultaneously faster improvement boiler feedwater temperature, accelerate the boiler feedwater; the flow rate of auxiliary steam utilization can be increased, and the stability and safety of the operation of the deaerator are ensured while the feed water temperature is increased; the improvement of the feed water temperature is beneficial to controlling the temperature of the main reheat steam, the safety of the operation of the boiler is improved, the efficiency of the boiler is improved, and part of fuel is saved.
Further, as shown in fig. 1, the high pressure heater group 4 includes a first high pressure heater 41, a second high pressure heater 42 and a third high pressure heater 43 which are connected in series to the feed water pipe 1 in this order, the first high pressure heater 41 can be communicated with the boiler water inlet, the third high pressure heater 43 is connected with the feed water pump 3, and the cold to secondary steam header passage 61 and the cold to secondary heater passage 62 can be communicated with the secondary steam header 5 and the second high pressure heater 42. The cold secondary steam header channel 61 and the cold secondary steam heater channel 62 can lead part of the auxiliary steam to the second high-pressure heater 42 to heat the feed water, and the flow of the auxiliary steam utilized by the deaerator is reduced under the condition of the same auxiliary steam flow.
Furthermore, the outer surface of the water supply pipeline 1 is covered with a heat insulation material, so that heat is sufficiently preserved, and the heat dissipation of water supply is reduced.
Further, as shown in fig. 1, the second high-pressure heater 42 is a shell-and-tube heat exchanger, boiler feed water flows through a tube pass, high-temperature steam from the auxiliary steam header 5 flows into the shell pass, the high-temperature steam heats the boiler feed water in the tube pass and does not mix with the boiler feed water, and the high-temperature steam is cooled and condensed to form hydrophobic water. The second high-pressure heater 42 is provided with a drain outlet which can be communicated with the deaerator 2 through a drain pipeline 7, and drain enters the deaerator 2 through the drain pipeline 7 to be mixed with feed water.
Further, as shown in fig. 1, a connection pipe 63 is detachably provided between the cold to auxiliary steam header passage 61 and the cold to heater passage 62, and a first check valve 64 is detachably provided between the cold to auxiliary steam header passage 61 and the cold to hot pipe 92.
In the debugging process of the unit and before a boiler blowpipe, in order to prevent steam from entering the auxiliary steam header channel 61 and the heater channel 62 again, the cold auxiliary steam header channel 61 and the cold heater channel 62 are disconnected and opened at the cold re-pipeline side; when the pipe is required to be blown, a connecting pipe 63 is connected between the cold-to-auxiliary steam header channel 61 and the cold-to-heater channel 62, and the auxiliary steam header 5 and the second high-pressure heater 42 are conducted, so that the auxiliary steam is used for heating the feed water in the second high-pressure heater 42. The cold to heater channel 62 distance is short and the connection 63 need not be too long and the field work is low.
Further, as shown in fig. 1, a first header connecting port 51 and a second header connecting port 52 are provided on the auxiliary steam header 5, the first header connecting port 51 can be communicated with the deaerator 2, and the second header connecting port 52 can be communicated with the cold to auxiliary steam header passage 61. The outer surface of the pipeline of the connecting pipe 63 is covered with a heat insulation material, so that heat is sufficiently preserved, and heat dissipation is reduced.
Further, as shown in fig. 1, a first adjusting valve 65 is disposed on the cold-to-auxiliary steam header passage 61, and the first adjusting valve 65 is used for adjusting the flow rate of the high-temperature steam flowing from the auxiliary steam header to the second high-pressure heater.
Further, as shown in fig. 1, a first manual cut-off valve 66 is connected between the first regulator valve 65 and the second tank connection port 52, and a first electric cut-off valve 67 is connected between the first regulator valve 65 and the connection pipe 63.
Further, as shown in fig. 1, a second check valve 68 and a second electric shutoff valve 69 are connected in series between the connection pipe 63 and the second high-pressure heater 42.
Further, as shown in fig. 1, a fourth electric check valve 81, a third regulating valve 82 and a third check valve 83 are sequentially connected between the first header connection port 51 and the deaerator 2.
Further, as shown in fig. 1, a third electric stop valve 71, a second regulating valve 72 and a second manual valve 73 are provided in this order from the drain outlet on the drain line 7.
In the actual operation process, the flow of the steam entering the second high-pressure heater 42 and the deaerator 2 is respectively regulated through the first regulating valve 65 and the third regulating valve 82, and meanwhile, the feed water is heated; the water level of the second high-pressure heater 42 is adjusted by the second adjusting valve 72, so that the pressure in the second high-pressure heater 42 is ensured, and the drained water can smoothly flow into the deaerator 2.
The utility model discloses an in improving system 100 of boiler feedwater temperature during blowpipe, including feedwater flow and steam flow, wherein:
in the water supply flow, the feed water in the deaerator 2 is pressurized by the feed water pump 3, and then further heated and warmed by the third high-pressure heater 43, the second high-pressure heater 42, and the first high-pressure heater 41 in sequence, and then fed into the boiler 9.
In the steam flow (auxiliary steam flow), high-temperature steam is divided into two paths, and a part of the high-temperature steam enters the deaerator 2 through the fourth electric stop valve 81, the third regulating valve 82 and the third check valve 83, is directly mixed with feed water and is heated; in the operation process, the fourth electric stop valve 81 is fully opened, the third check valve 83 is automatically opened under the action of front-back pressure difference, and the steam flow entering the deaerator 2 is regulated through the third regulating valve 82;
part of the high-temperature steam enters the second high-pressure heater 42 through the first manual stop valve 66, the first adjusting valve 65, the first electric stop valve 67, the connecting pipe 63, the second check valve 68 and the second electric stop valve 69, the high-temperature steam indirectly heats the feed water, and the condensed drain water enters the deaerator 2 through the drain pipeline 7, the third electric stop valve 71, the second adjusting valve 72 and the second manual valve 73 to be mixed with the feed water. In the operation process, the first manual stop valve 66, the first electric stop valve 67 and the second electric stop valve 69 are fully opened, and the flow of the high-temperature steam entering the second high-pressure heater 42 is regulated through the first regulating valve 65; the third electric stop valve 71 and the second manual valve 73 are fully opened, and the hydrophobic amount and the water level of the second high pressure heater 42 are adjusted by the second adjusting valve 72.
The utility model discloses a method of use of system 100 for increasing boiler feed water temperature during the period of blowpipe is as follows:
step a, a system for increasing the boiler feed water temperature during the period of assembling a blowing pipe;
specifically, in the debugging process of the unit and before the blow pipe of the boiler, in order to prevent steam from entering the cold-to-auxiliary steam header channel 61 and the cold-to-heater channel 62, the cold-to-auxiliary steam header channel 61 is disconnected and blocked on the cold-to-cold pipeline side through the first check valve 64, and the cold-to-heater channel 62 is disconnected and blocked on the cold-to-cold pipeline side through the second check valve 68.
Step b, as shown in fig. 2, during the normal operation of the unit, the cold to auxiliary steam header channel 61 and the cold to heater channel 62 are both communicated with the cold to re-channel 92 and are close to each other; high-temperature steam is supplied to the high-pressure heater group 4 and the auxiliary steam header 5 respectively;
step c, as shown in fig. 3, when a pipe is required to be blown, the auxiliary steam header is respectively communicated with the deaerator and the second high-pressure heater, communicated with a drain pipeline, and used for directly mixing the high-temperature steam entering the deaerator with the feed water to heat the feed water, the feed water in the deaerator is pressurized by a feed water pump and then sequentially passes through the third high-pressure heater, the second high-pressure heater and the first high-pressure heater, the high-temperature steam entering the second high-pressure heater is used for reheating the feed water from the deaerator, and the feed water is heated and then enters the boiler; the drain water of the second high-pressure heater returns to the deaerator through a drain pipeline;
specifically, before the pipe is blown, the first check valve 64 on the cold-to-auxiliary steam header channel 61 is removed, the connecting pipe 63 is used for connecting the cold-to-auxiliary steam header channel 61 and the cold-to-heater channel 62, and the auxiliary steam header 5 and the second high-pressure heater 42 are conducted, so that the auxiliary steam heats the feed water in the second high-pressure heater 42.
The valves (a first manual stop valve 66, a first electric stop valve 67, a second check valve 68, a second electric stop valve 69, a third electric stop valve 71, a second manual valve 73, a fourth electric stop valve 81 and a third check valve 83) are communicated, high-temperature steam in the auxiliary steam header 5 flows to the second high-pressure heater 42 and the deaerator 2 respectively, the high-temperature steam entering the deaerator 2 is directly mixed with feed water and is heated, the feed water in the deaerator 2 is pressurized by the feed water pump 3 and then sequentially passes through the third high-pressure heater 43, the second high-pressure heater 42 and the first high-pressure heater 41, the high-temperature steam entering the second high-pressure heater 42 heats the feed water from the deaerator 2, and the feed water is heated and then enters the boiler 9; the drain water of the second high-pressure heater returns to the deaerator through the drain pipeline.
In the process, according to the requirement, the steam flow flowing from the auxiliary steam header 5 to the second high-pressure heater 42 and the deaerator 2 is respectively adjusted through the first adjusting valve 65 and the third adjusting valve 82.
From above, the utility model provides a system for improve boiler feedwater temperature during blowpipe has following beneficial effect:
the utility model provides a system for improve boiler feedwater temperature during blowpipe not only uses the oxygen-eliminating device to heat the feedwater, and leads the partial auxiliary steam in the auxiliary steam header to the high-pressure heater group, under the condition of the same auxiliary steam flow, reduces the flow that the oxygen-eliminating device utilized the auxiliary steam, compares with the method that the oxygen-eliminating device singly adopted the heating feedwater, has reduced oxygen-eliminating device temperature and heat accumulation, has reduced calorific loss, has improved heat utilization ratio, simultaneously faster improvement boiler feedwater temperature, accelerate the boiler feedwater; the flow rate of auxiliary steam utilization can be increased, and the stability and safety of the operation of the deaerator are ensured while the feed water temperature is increased; the improvement of the feed water temperature is beneficial to controlling the temperature of the main reheat steam, the safety of the operation of the boiler is improved, the efficiency of the boiler is improved, and part of fuel is saved.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The utility model provides a system for improve boiler feedwater temperature during blowpipe, includes the water supply line, set up the oxygen-eliminating device on the water supply line, the export intercommunication of oxygen-eliminating device has the water-feeding pump, its characterized in that, the export intercommunication high pressure heater group of water-feeding pump, the export of high pressure heater group can communicate with the boiler water inlet, be connected with the auxiliary steam header on the oxygen-eliminating device, the auxiliary steam header can be through cold again to auxiliary steam header passageway intercommunication cold pipeline or high pressure heater group, the high pressure heater group can be through cold again to heater passageway intercommunication cold pipeline or auxiliary steam header, the auxiliary steam header can be used for heating the oxygen-eliminating device in feed water and can be used for to the process the feedwater heating of high pressure heater group heaies up.
2. The system for increasing boiler feed water temperature during blow tube operation as recited in claim 1 wherein said high pressure heater bank comprises a first high pressure heater, a second high pressure heater and a third high pressure heater connected in series in sequence to said feed water line, said first high pressure heater being capable of communicating with a boiler water inlet, said third high pressure heater being connected to said feed water pump, said cold to auxiliary steam header passageway and said cold to heater passageway being capable of communicating said auxiliary steam header and said second high pressure heater.
3. The system for increasing boiler feed water temperature during a blow tube of claim 2, wherein said second high pressure heater is provided with a hydrophobic outlet, said hydrophobic outlet being communicable with said deaerator via a hydrophobic conduit.
4. A system for increasing the temperature of boiler feed water during a blow tube as recited in claim 3 wherein a connection tube is removably disposed between said cold to auxiliary steam header passage and said cold to heater passage, and a first check valve is removably disposed between said cold to auxiliary steam header passage and said cold to hot tube.
5. The system for increasing boiler feed water temperature during a blow tube of claim 4, wherein said auxiliary steam header is provided with a first header port and a second header port, said first header port being capable of communicating with said deaerator, said second header port being capable of communicating with said cold to auxiliary steam header passage.
6. The system for increasing boiler feed water temperature during blow tube operation as recited in claim 5 wherein a first regulator valve is disposed in said cold to auxiliary steam header passage, said first regulator valve being adapted to regulate the flow of high temperature steam from said auxiliary steam header to said second high pressure heater.
7. The system for increasing boiler feed water temperature during a blow tube as recited in claim 6 wherein a first manual shut-off valve is connected between said first regulating valve and said second connection port, and a first electrically operated shut-off valve is connected between said first regulating valve and said connection pipe.
8. The system for increasing boiler feed water temperature during a blow tube as recited in claim 4 wherein a second check valve and a second electrically operated shutoff valve are connected in series between said connecting tube and said second high pressure heater.
9. The system for increasing boiler feed water temperature during a blow tube of claim 5, wherein a fourth electrically operated stop valve, a third regulator valve and a third check valve are connected in series between said first header connection port and said deaerator, said third regulator valve for regulating the flow of high temperature steam from said auxiliary steam header to said deaerator.
10. The system for increasing boiler feed water temperature during blow pipe operation according to claim 3, wherein a third electrically-operated shutoff valve, a second regulating valve and a second manually-operated valve are disposed in said drain line in that order from said drain outlet, said second regulating valve being adapted to regulate the water level of said second high pressure heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120685529.7U CN214581018U (en) | 2021-04-02 | 2021-04-02 | System for increasing boiler feed water temperature during blow tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120685529.7U CN214581018U (en) | 2021-04-02 | 2021-04-02 | System for increasing boiler feed water temperature during blow tube |
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| Publication Number | Publication Date |
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| CN214581018U true CN214581018U (en) | 2021-11-02 |
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| CN202120685529.7U Active CN214581018U (en) | 2021-04-02 | 2021-04-02 | System for increasing boiler feed water temperature during blow tube |
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2021
- 2021-04-02 CN CN202120685529.7U patent/CN214581018U/en active Active
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