CN219607054U - Peak regulating boiler steam-water treatment system - Google Patents

Abstract

The utility model discloses a peak shaving boiler steam-water treatment system which comprises a water supply system, a condenser, a deaerator, a coal economizer, a boiler barrel, a vaporization system and a sampling system which are sequentially connected through pipelines, wherein the vaporization system comprises a superheater inlet header, a desuperheater header and a superheater outlet header which are sequentially connected with an upper boiler barrel, the output end of the deaerator is provided with a water supply pump, the output end of the water supply pump is respectively connected with the coal economizer and the desuperheater header through the pipelines, the water supply system, the boiler barrel and a steam outlet pipe are all connected with the sampling system through sampling pipes, and the water supply system comprises a water supply tank, a chemical professional water supplementing pipe and a water industry professional water supplementing pipe which are connected with the inlet of the water supply tank, and the water industry professional water supplementing pipe is communicated with a cooling inlet connected with the sampling system through a cooling pipe. The utility model monitors whether the steam-water meets the standard or not in time through the sampling system, and prevents the boiler and the thermodynamic system from scaling, corrosion, salt accumulation and other faults.

Description

Peak regulating boiler steam-water treatment system

Technical Field

The utility model relates to the technical field of boiler water treatment, in particular to a peak shaving boiler steam-water treatment system.

Background

At present, in order to prevent the faults of scaling, corrosion, salt accumulation and the like of a boiler and a thermodynamic system thereof, the quality of the steam and water should reach a certain standard, so that the quality of the steam and water is monitored at all times, but researchers find that in the system architecture design of the traditional boiler steam and water treatment system, only a simple boiler header water wall tube, a superheater and a cylinder are formed, and in the process of the traditional boiler steam and water treatment system, sampling cannot be carried out, meanwhile, the necessary softening treatment is not adopted, and the system architecture has the technical defects of simple design, single function and the like, so that whether the steam and water meet the standard cannot be determined.

In summary, how to overcome the above technical defects of the conventional technology is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a peak shaving boiler steam treatment water system capable of sampling water and/or steam in each system of a boiler.

The aim of the utility model is realized by the following technical scheme:

the utility model provides a peak shaving boiler catch water processing system, includes feed water system, condenser, deaerator, economizer, drum, vaporization system and sampling system that connect gradually through the pipeline, the drum includes drum and lower drum, vaporization system includes the superheater import collection case, desuperheater collection case and the superheater export collection case that connect gradually the setting with last drum, the output of superheater export collection case is connected with the steam outlet pipe, and the output of deaerator is equipped with the feed water pump, the output of feed water pump is connected with economizer and desuperheater collection case respectively through the pipeline, feed water system, drum and steam outlet pipe all are connected with sampling system through the sampling tube, and feed water system includes the feed water tank, with the chemical specialty moisturizing pipe and the water industry specialty moisturizing pipe of feed water tank entry linkage, the cooling entry intercommunication that water industry specialty moisturizing pipe is connected with sampling system through the cooling pipe.

In the above summary, further, a full-automatic water softener is further disposed between the hydraulic professional water replenishing pipe and the water tank.

In the above summary of the utility model, further, the output end of the condenser is further provided with a first return pipe, one end of the first return pipe is communicated with the inlet of the water tank, and the first return pipe is provided with a pressure release valve.

In the above summary of the utility model, further, the output end of the feed pump is further provided with a second return pipe, and one end of the second return pipe is communicated with the inlet of the deaerator.

In the above summary of the utility model, further, a first circulation pipeline is connected between the upper boiler barrel and the deaerator, an input end of the first circulation pipeline is connected with a steam outlet of the upper boiler barrel, an output end of the first circulation pipeline is respectively connected with a head of the deaerator and a bottom of the deaerator through a first branch pipeline and a second branch pipeline, a regulating valve is arranged on the first branch pipeline, and a bypass switch valve is arranged on the second branch pipeline.

In the above summary, a second circulation pipe is further connected between the upper drum and the economizer.

In the above summary, further, the sampling system includes a water supply sampler, a fire sampler, a saturated steam sampler, and a superheated steam sampler, the hydraulic professional water replenishing pipe is connected to an inlet of the water supply sampler through a pipe, the bottom of the upper drum is connected to an inlet of the fire sampler through a pipe, a steam outlet of the drum is connected to an inlet of the saturated steam sampler through a pipe, a steam outlet of the superheater outlet header is connected to an inlet of the superheated steam sampler through a pipe, and the hydraulic professional water replenishing pipe supplies cooling water to the water supply sampler, the fire sampler, the saturated steam sampler, and the superheated steam sampler through cooling pipes.

In the above summary, further, the peak shaving boiler steam-water system further includes a blowdown system, the blowdown system includes a fixed-row expansion vessel, a blowdown pipe, and a mixing pool connected with the fixed-row expansion vessel, and the upper drum, the lower drum, the superheater inlet header, the desuperheater header, and the superheater outlet header are all communicated with an inlet of the fixed-row expansion vessel through blowdown pipes.

In the above summary of the utility model, further, the peak shaving boiler steam-water system further includes a dosing system, the dosing system is composed of a phosphate adding device and an ammonia adding device, an deoxidizing water pump is arranged between the water supply tank and the condenser, the output end of the deoxidizing water pump is respectively connected with inlets of the phosphate adding device and the ammonia adding device through pipelines, the output end of the phosphate adding device is connected with the upper drum through a pipeline, and the output end of the ammonia adding device is communicated with the downstream end of the deoxidizer through a pipeline.

The beneficial effects of the utility model are as follows:

the utility model is provided with a sampling system, the sampling system samples water or steam at the downstream end of the deaerator, the bottom of the boiler barrel and the steam outlet, and timely monitors whether the steam-water meets the standard or not, thereby preventing the boiler and the thermodynamic system thereof from scaling, corrosion, salt accumulation and other faults; meanwhile, because the steam is inconvenient to collect, or the sampling personnel are easy to scald after the steam is heated, the sampling system is further provided with a cooling water pipe connected with a hydraulic professional water supplementing pipe to cool the sampling device, and the sampling device is convenient to sample.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

In the figure, a 1-water supply system, a 101-chemical professional water supplementing pipe, a 102-hydraulic professional water supplementing pipe, a 103-water supply tank, a 104-full-automatic water softening device, a 2-condenser, a 3-deaerator, a 4-economizer, a 5-upper drum, a 6-lower drum, a 7-vaporization system, a 71-superheater inlet header, a 72-desuperheater header, a 73-superheater outlet header, a 74-steam outlet pipe, an 8-sampling system, an 81-water supply sampler, an 82-fire sampler, an 83-saturated steam sampler, an 84-superheated steam sampler, an 85-cooling pipe, a 9-water supply pump, a 10-first return pipe, an 11-water pump, a 12-second return pipe, a 13-circulation pipeline I, a 131-branch pipeline I, a 132-branch pipeline I, a 14-circulation pipeline II, a 15-fixed-row expansion vessel, a 16-dosing system, a 161-phosphate adding device and a 162-ammonia adding device are shown.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1, a peak shaving boiler steam-water treatment system comprises a water supply system 1, a condenser 2, a deaerator 3, an economizer 4, a boiler barrel, a vaporization system 7 and a sampling system 8 which are sequentially connected through pipelines;

the boiler barrel comprises an upper boiler barrel 5 and a lower boiler barrel 6, the vaporization system 7 comprises a superheater inlet header 71, a desuperheater header 72 and a superheater outlet header 73 which are sequentially connected with the upper boiler barrel 5, and the output end of the superheater outlet header 73 is connected with a steam outlet pipe 74. Specifically, the water in the drum is heated to form steam, the steam is further heated to superheated steam by the superheater, and then the superheated steam is supplied to the downstream turbine through the steam outlet pipe 74 for working, and specifically, the flow direction of water or steam is shown by the arrow direction in fig. 1.

The output of deaerator 3 is equipped with feed pump 9, feed pump 9's output passes through the pipeline and is connected with economizer 4 and desuperheater collection case 72 respectively, feed water system 1, drum and steam outlet pipe 74 all are connected with sampling system 8 through the sampling tube, and feed water system 1 includes feed water tank 103, the chemical specialty moisturizing pipe 101 and the water conservancy project moisturizing pipe 102 of being connected with feed water tank 103 entry, the cooling entry intercommunication that water conservancy project specialty moisturizing pipe 102 is connected with sampling system 8 through cooling tube 85. Specifically, in the use process, the chemical professional water supplementing pipe 101 is industrial water after chemical adding treatment, and can be supplied to a boiler for use, so that corrosion of pipelines and the boiler and faults such as salt accumulation are reduced, and the chemical professional water supplementing pipe 101 is used as a main water supplementing pipe for supplementing water for the boiler; however, when the chemical professional water supplementing pipe 101 fails or the like, the hydraulic professional water supplementing pipe 102 can be started to supplement water to the boiler, and the hydraulic professional water supplementing pipe 102 can be used as a standby water supplementing pipe in the system.

In the above embodiment, preferably, a fully automatic water softening device 104 is further disposed between the hydraulic professional water replenishing pipe 102 and the water tank 103. Specifically, the hydraulic professional water replenishing pipe 102 can be used after being treated by water, the fully-automatic water softening device 104 can improve the PH value of water quality, prevent boiler corrosion and scaling, and improve the harm of oxygen corrosion to the water supply system 1 equipment.

The output end of the condenser 2 is also provided with a first return pipe 10, one end of the first return pipe 10 is communicated with the inlet of the water supply tank 103, and the first return pipe 10 is provided with a pressure relief valve. Specifically, the water in the water supply tank 103 is heated through the condenser 2, so that the water inlet temperature of the boiler can be indirectly increased, the steam outlet time of the boiler is shortened, less natural gas can be used in a short time, the same amount of steam can be output, the working efficiency is improved, certain fruits are required to be maintained in the condenser 2 in the process of passing work, the condenser 2 is damaged due to the fact that the water level is too high or too low, and when the water level is too high, the unnecessary water is drawn into the water supply tank 103 through a pressure relief valve (not marked in the figure) for recycling.

The output end of the feed pump 9 is also provided with a second return pipe 12, and one end of the second return pipe 12 is communicated with the inlet of the deaerator 3. Specifically, the second return pipe 12 discharges part of the water pressure in the main pipe back to the deaerator 3, so that the pipe is not pressure-changed.

The upper boiler barrel 5 is communicated with the deaerator 3, a first circulating pipeline 13 is communicated with the steam outlet of the upper boiler barrel 5, the output end of the first circulating pipeline 13 is communicated with the head of the deaerator 3 and the bottom of the deaerator 3 through a first branch pipeline 131 and a second branch pipeline 132 respectively, a regulating valve (not shown in the figure) is arranged on the first branch pipeline 131 and is used for regulating water flow in the pipeline, and a bypass switch valve is arranged on the second branch pipeline 132. Specifically, the deaerator 3 has the function of heating the feed water in addition to the function of removing oxygen and other gases in the feed water of the boiler and ensuring that the water quality of the boiler reaches the standard. The water is heated by the boiler to form water vapor, part of the water vapor enters the head part of the deaerator 3 through the first circulating pipeline 13 and the first branch pipeline 131, and the head part of the deaerator 3 is heated, so that the water supply temperature is increased; during normal operation, the first branch pipeline 131 is opened, the second branch pipeline 132 is closed, steam enters the head of the deaerator 3 from the first branch pipeline 131, and the second branch pipeline 132 is started to be used when the first branch pipeline 131 fails, so that the second branch pipeline 132 is used as a standby pipeline.

In the above embodiment, it is preferable that a second circulation pipe 14 is connected between the upper drum 5 and the economizer 4. The economizer 4 is arranged in the tail flue of the boiler and is a heat exchange device for heating the feed water by utilizing the preheating in the boiler exhaust gas. The economizer 4 can be protected from overheating by the recirculation duct during ignition of the boiler. The second circulation pipe 14 is turned on and off according to the water inlet requirement of the boiler, i.e. when the boiler is in water, the second circulation pipe 14 should be turned off, otherwise, the water supply will be short-circuited to the steam drum in the boiler by the recirculation pipe, the economizer 4 will not be cooled due to the loss of water flow, and after the water is replenished, the boiler water replenishing valve is closed and the circulation pipe should be opened.

In the above embodiment, preferably, the sampling system 8 includes a feedwater sampler 81, a fire sampler 82, a saturated steam sampler 83 and a superheated steam sampler 84, the hydraulic professional water supplementing pipe 102 is connected to the inlet of the feedwater sampler 81 through a pipe, the bottom of the upper boiler barrel 5 is connected to the inlet of the fire sampler 82 through a pipe, the steam outlet of the boiler barrel is connected to the inlet of the saturated steam sampler 83 through a pipe, and the steam outlet of the superheater outlet header 73 is connected to the inlet of the superheated steam sampler 84 through a pipe. The sampling system 8 can timely detect whether the performance parameters of water or steam in each system or device in the steam-water system of the boiler reach the industrial standard.

Meanwhile, the hydraulic professional water replenishing pipe 102 supplies cooling water to the water supply sampler 81, the fire sampler 82, the saturated steam sampler 83 and the superheated steam sampler 84 respectively through the cooling pipe 85, because the steam is inconvenient to collect, or the heated water is easy to scald the sampling personnel, the sampling system 8 is further provided with a cooling pipe connected with the hydraulic professional water replenishing pipe 102 to cool the water or the steam of the sampling device, so that the sampling is convenient.

In the above embodiment, preferably, the peak shaving boiler steam-water system further includes a blowdown system, the blowdown system includes a fixed-row expansion vessel 15, a blowdown pipe, and a mixing tank connected to the fixed-row expansion vessel 15, and the upper drum 5, the lower drum 6, the superheater inlet header 71, the desuperheater header 72, and the superheater outlet header 73 are all communicated with the inlet of the fixed-row expansion vessel 15 through blowdown pipes. The constant-row expander 15 can enable the boiler to periodically discharge sewage or internal pressure, then decompress and expand to separate secondary steam and waste hot water, wherein the secondary steam can be discharged into the atmosphere or used as a heat source, and the waste hot water is generally discharged into a sewage system through a sewage mixing temperature pond (not shown).

In the above embodiment, preferably, the peak shaving boiler steam-water system further includes a dosing system 16, the dosing system 16 is composed of a phosphate adding device 161 and an ammonia adding device 162, an deoxidizing water pump 11 is disposed between the water tank 103 and the condenser 2, an output end of the deoxidizing water pump 11 is connected with inlets of the phosphate adding device 161 and the ammonia adding device 162 through pipelines, an output end of the phosphate adding device 161 is connected with the upper drum 5 through a pipeline, and an output end of the ammonia adding device 162 is communicated with a downstream end of the deaerator 3 through a pipeline. The phosphate adding device 161 and the ammonia adding device 162 are respectively added to the output ends of the upper boiler barrel 5 and the deoxidizing water pump 11 in sequence for dilution, so that two medicines are prevented from being added to the upper boiler barrel 5 at the same time, and chemical reaction is easy to occur.

Specifically, because the feed water entering the boiler has a certain salt content, scaling substances of the boiler water are converted into water slag, and in addition, impurities are generated when the boiler water corrodes metals, in order to control the quality of the boiler water, the boiler corrosion and scaling are prevented, chemical adding treatment is needed in the boiler, and the boiler water with a high salt content and the deposited water slag are required to be continuously discharged when the boiler is operated, namely, boiler pollution discharge is performed, and a large amount of sewage is generated in the pollution discharge process; secondly, as the pressure and the temperature of the medium of the pressure-bearing pipe fitting in the boiler are continuously increased, the requirement on the quality of the steam-water is higher, so that the steam-water of the boiler is required to be sampled, measured and analyzed, and then the steam-water of the boiler is subjected to chemical dosing treatment and improved, so that the safe operation of the steam-water of the boiler is ensured.

The foregoing examples merely illustrate specific embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims (9)

1. The utility model provides a peak shaving boiler steam-water treatment system which is characterized in that, include feed water system (1), condenser (2), deaerator (3), economizer (4), drum, vaporization system (7) and sampling system (8) that connect gradually through the pipeline, the drum includes upper drum (5) and lower drum (6), vaporization system (7) include with upper drum (5) connect gradually superheater import collection case (71), desuperheater collection case (72) and superheater export collection case (73) that set up, the output of superheater export collection case (73) is connected with steam outlet pipe (74), the output of deaerator (3) is equipped with feed pump (9), the output of feed pump (9) is connected with economizer (4) and desuperheater collection case (72) respectively through the pipeline, feed water system (1), drum and steam outlet pipe (74) are all connected with sampling system (8) through the sampling tube, and feed water system (1) include feed water tank (103), with feed water tank (103) entry connected chemistry specialty moisturizing pipe (101) and water conservancy project specialty moisturizing pipe (102), water conservancy project specialty moisturizing pipe (102) are through cooling inlet intercommunication that cooling tube (85) are connected with sampling system (8).

2. The peak shaving boiler steam water treatment system according to claim 1, wherein a full-automatic water softening device (104) is further arranged between the hydraulic professional water supplementing pipe (102) and the water supply tank (103).

3. The peak shaving boiler steam water treatment system according to claim 1, wherein the output end of the condenser (2) is further provided with a first return pipe (10), one end of the first return pipe (10) is communicated with the inlet of the water supply tank (103), and a pressure relief valve is arranged on the first return pipe (10).

4. The peak shaving boiler steam water treatment system as claimed in claim 1, wherein the output end of the feed water pump (9) is further provided with a second return pipe (12), and one end of the second return pipe (12) is communicated with the inlet of the deaerator (3).

5. The peak shaving boiler steam-water treatment system according to claim 4, wherein a first circulating pipeline (13) is communicated between the upper boiler barrel (5) and the deaerator (3), an input end of the first circulating pipeline (13) is communicated with a steam outlet of the upper boiler barrel (5), an output end of the first circulating pipeline (13) is respectively communicated with the head of the deaerator (3) and the bottom of the deaerator (3) through a first branch pipeline (131) and a second branch pipeline (132), a regulating valve is arranged on the first branch pipeline (131), and a bypass switch valve is arranged on the second branch pipeline (132).

6. The peak shaving boiler steam water treatment system as claimed in claim 5, wherein a second circulating pipeline (14) is communicated between the upper boiler barrel (5) and the economizer (4).

7. The peak shaving boiler steam-water treatment system according to claim 1, wherein the sampling system (8) comprises a water supply sampler (81), a fire sampler (82), a saturated steam sampler (83) and a superheated steam sampler (84), the downstream end of the deaerator (3) is connected with the inlet of the water supply sampler (81) through a pipeline, the bottom of the upper drum (5) is connected with the inlet of the fire sampler (82) through a pipeline, the steam outlet of the drum is connected with the inlet of the saturated steam sampler (83) through a pipeline, the steam outlet of the superheater outlet header (73) is connected with the inlet of the superheated steam sampler (84) through a pipeline, and the hydraulic professional water supplementing pipe (102) is respectively supplied with cooling water to the water supply sampler (81), the fire sampler (82), the saturated steam sampler (83) and the superheated steam sampler (84) through cooling pipes (85).

8. The peak shaving boiler steam water treatment system as claimed in claim 1, further comprising a blowdown system, wherein the blowdown system comprises a fixed-row expansion vessel (15), a blowdown pipe and a mixing tank connected with the fixed-row expansion vessel (15), and the upper drum (5), the lower drum (6), the superheater inlet header (71), the desuperheater header (72) and the superheater outlet header (73) are all communicated with an inlet of the fixed-row expansion vessel (15) through blowdown pipes.

9. The peak shaving boiler steam-water treatment system according to claim 1, further comprising a dosing system (16), wherein the dosing system (16) comprises a phosphate adding device (161) and an ammonia adding device (162), an deoxidizing water pump (11) is arranged between the water feeding tank (103) and the condenser, an output end of the deoxidizing water pump (11) is connected with inlets of the phosphate adding device (161) and the ammonia adding device (162) respectively through pipelines, an output end of the phosphate adding device (161) is connected with the upper boiler barrel (5) through a pipeline, and an output end of the ammonia adding device (162) is communicated with a downstream end of the deoxidizer (3) through a pipeline.