Soot blowing steam source device

Abstract

The utility model discloses a soot blowing steam source device, and relates to the technical field of boiler soot blowing, the soot blowing steam source device comprises a steam source and a soot blowing pipeline, the steam source comprises a low-temperature steam source from an inlet of a boiler low-temperature reheater and a high-temperature steam source from an outlet of the boiler low-temperature reheater, the soot blowing pipeline comprises a low-temperature pipeline, a high-temperature pipeline and a mixing pipeline, a first temperature controller is arranged on the mixing pipeline, a first adjusting valve is arranged on the high-temperature pipeline, and the first temperature controller is electrically connected with the first adjusting valve. According to the technical scheme, the low-temperature steam source and the high-temperature steam source are mixed in the mixing pipeline so as to output the output steam meeting the soot blowing steam temperature and pressure requirements, a water spraying temperature reduction system is omitted, the problem that water is carried by the steam in the soot blowing process is avoided, erosion thinning caused by the fact that the soot blowing steam carries the water on the heating surface of the boiler is reduced, and the service life of the boiler is prolonged. The air pre-heater is prevented from being blocked due to the fact that soot blowing steam carries water, and operation safety and economical efficiency of the boiler are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler soot blowing technical field especially relates to a soot blowing steam source device. BACKGROUND

[0002] The soot blowing of boiler heating surface and air preheater is one of the problems which are paid close attention to in the operation of boiler. The soot blowing source mainly uses steam, and the steam source usually adopts the superheated steam or reheated steam of boiler, which is outputted to meet the requirements of soot blowing steam temperature and pressure through water injection temperature reduction control. However, in the actual process, the soot blowing steam often carries water due to the poor linearity of temperature reduction water adjustment system or the internal leakage of valve, which easily leads to the blowout of boiler heating surface and air preheater, the blockage of air preheater and the leakage of four tubes of boiler, and further affects the safe stability and economic operation of unit.

[0003] Therefore, how to eliminate the steam carrying water in the soot blowing process is a problem which needs to be solved at present. CONTENT OF UTILITY MODEL

[0004] The main purpose of the utility model is to provide a soot blowing steam source device, which aims to solve the problem of how to eliminate the steam carrying water in the soot blowing process.

[0005] In order to achieve the above purpose, the utility model provides a soot blowing steam source device, which comprises a steam source and a soot blowing pipeline, the steam source comprises a low-temperature steam source from the inlet of boiler low-temperature reheater and a high-temperature steam source from the outlet of boiler low-temperature reheater, the soot blowing pipeline comprises a low-temperature pipeline, a high-temperature pipeline and a mixing pipeline, the low-temperature steam source is communicated with the mixing pipeline through the low-temperature pipeline, the high-temperature steam source is communicated with the mixing pipeline through the high-temperature pipeline, and one end of the mixing pipeline away from the low-temperature pipeline is used for being communicated with a soot blowing main pipe; a first temperature controller is arranged on the mixing pipeline, a first adjusting valve is arranged on the high-temperature pipeline, and the first temperature controller is electrically connected with the first adjusting valve;

[0006] And / or,

[0007] A second temperature controller is arranged on the mixing pipeline, a second adjusting valve is arranged on the low-temperature pipeline, and the second temperature controller is electrically connected with the second adjusting valve.

[0008] In an embodiment, a temperature matcher is arranged on the mixing pipeline, the low-temperature steam source and a first interface on the temperature matcher are both communicated with the low-temperature pipeline, the high-temperature steam source and a second interface on the temperature matcher are both communicated with the high-temperature pipeline, and the outlet of the temperature matcher is communicated with the mixing pipeline, so that the temperature matcher is used for mixing the low-temperature steam source and the high-temperature steam source.

[0009] In an embodiment, the mixing pipeline is further provided with a regulating valve, the regulating valve is located between the temperature matching device and the blowing mother pipeline, and the regulating valve is used for regulating the pressure of the output steam in the mixing pipeline.

[0010] In an embodiment, the regulating valve comprises a pneumatic regulating valve, and the mixing pipeline is further provided with a pressure controller, the pressure controller is located between the pneumatic regulating valve and the blowing mother pipeline, and the pressure controller is electrically connected with the pneumatic regulating valve.

[0011] In an embodiment, a first temperature detection point and a first pressure detection point are arranged between the temperature matching device and the regulating valve.

[0012] and / or,

[0013] A second temperature detection point and a second pressure detection point are arranged between the regulating valve and the blowing mother pipeline.

[0014] In an embodiment, a safety valve is arranged on the mixing pipeline, the safety valve is located between the regulating valve and the blowing mother pipeline.

[0015] In an embodiment, a first check valve is arranged on the low-temperature pipeline.

[0016] and / or,

[0017] A second check valve is arranged on the high-temperature pipeline.

[0018] In an embodiment, a first manual stop valve is arranged on the low-temperature pipeline.

[0019] and / or,

[0020] A first electric stop valve is arranged on the low-temperature pipeline.

[0021] In an embodiment, a second manual stop valve is arranged on the high-temperature pipeline.

[0022] and / or,

[0023] A second electric stop valve is arranged on the high-temperature pipeline.

[0024] In an embodiment, a third manual stop valve is arranged on the mixing pipeline.

[0025] and / or,

[0026] A third electric stop valve is arranged on the high-temperature pipeline.

[0027] In the embodiment of the utility model, low temperature steam source from the boiler low temperature reheater entrance is transported to the mixed pipeline through the low temperature pipeline, high temperature steam source from the boiler low temperature reheater exit is transported to the mixed pipeline through the high temperature pipeline, low temperature steam source and high temperature steam source mix in the mixed pipeline and form output steam which meets the steam temperature requirement and then output from the blowing mother pipe, thereby realizing the blowing of the boiler heating surface and the air preheater, in the embodiment, because the temperature of low temperature steam source is about 300 DEG C, the temperature of high temperature steam source is about 500 DEG C, the output steam on the mixed pipeline requires about 350 DEG C, in order to adjust the blowing steam temperature, the low temperature pipeline is set as the main transport pipeline, the high temperature pipeline is set as the adjusting pipeline, the first temperature controller is arranged on the mixed pipeline, the first adjusting valve is arranged on the high temperature pipeline, the first temperature controller is electrically connected with the first adjusting valve, the first temperature controller can control the opening size of the first adjusting valve, thereby controlling the steam source flow proportion of high temperature steam source, so as to realize the accurate control of the temperature of the output steam in the mixed pipeline, the accurate temperature control helps to reduce unnecessary energy waste, helps to improve the economic benefit of the boiler operation, can also flexibly adjust the steam temperature according to different boiler operation conditions and blowing requirements, has strong adaptability, improves the blowing efficiency, ensures that the blowing steam temperature meets the best condition of the boiler operation, and the electric connection of the first temperature controller and the first adjusting valve realizes the automatic temperature adjustment, reduces the manual intervention, improves the response speed and the operation convenience of the blowing steam source device; compared with setting the high temperature pipeline as the main transport pipeline and the low temperature pipeline as the adjusting pipeline, the embodiment can meet the blowing steam temperature and pressure requirement by outputting less steam, and is more energy-saving. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creative labor.

[0029] Figure 1The utility model discloses a structure schematic drawing of one embodiment of the blowing ash steam source device.

[0030] Figure 2 The utility model discloses a structure schematic drawing of another embodiment of the blowing ash steam source device.

[0031] Explanation of the attached drawings:

[0032] 100, blowing ash steam source device, 1, steam source, 1a, low-temperature steam source, 1b, high-temperature steam source, 2, blowing ash pipeline, 2a, low-temperature pipeline, 2b, high-temperature pipeline, 2c, mixed pipeline, 3, first temperature controller, 4, first regulating valve, 5, temperature matching device, 6, regulating valve, 6a, pneumatic regulating valve, 7, pressure controller, 8, first temperature detection point, 9, first pressure detection point, 10, second temperature detection point, 11, second pressure detection point, 12, safety valve, 13, first check valve, 14, second check valve, 15, first manual stop valve, 16, first electric stop valve, 17, second manual stop valve, 18, second electric stop valve, 19, third manual stop valve, 20, blowing ash main pipe, 21, second regulating valve, 22, second temperature controller.

[0033] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the attached drawings. Specific implementation

[0034] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the attached drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0035] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back), the directional indications are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0036] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not in the protection scope required by the utility model.

[0037] The boiler heating surface and the air preheater blowing ash is one of the problems which are concerned in the boiler operation. The blowing ash source mainly uses steam, and the steam source usually adopts the boiler superheated steam or reheated steam, which is outputted by the water injection temperature reduction control to meet the requirements of blowing ash steam temperature and pressure. However, in the actual process, the blowing ash steam often carries water due to the poor linearity of the temperature reduction water adjusting system or the valve internal leakage, which easily leads to the boiler heating surface and the air preheater blowing loss, the air preheater blockage and the four tube leakage accident of the boiler, and further affects the safe stability and economic operation of the unit.

[0038] After the applicant's careful research, it is found that the main characteristics of the steam blowing ash steam source are high pressure and temperature, which usually need to be reduced by water injection temperature reduction and pressure reduction to reduce the steam temperature and pressure for the use of steam blowing, which easily causes the problems of relatively low steam superheat degree, unstable pressure and blowing ash steam carrying water. On the one hand, the blowing ash steam carrying water causes the erosion and thinning of the boiler heating surface tube, and even the four tube leakage accident; on the other hand, the blowing ash steam carrying water of the air preheater causes the air preheater blockage, increases the fan power consumption, and exists the boiler operation safety risk, which seriously affects the safety and economy of the unit. In addition, the steam water injection temperature reduction causes serious erosion and corrosion of the temperature reduction and pressure reduction valve and pipeline, which increases the equipment maintenance workload and cost, and reduces the equipment reliability.

[0039] The main purpose of the utility model is to provide a blowing ash steam source device to solve the problem of how to eliminate the steam carrying water in the blowing ash process.

[0040] Please refer to Figure 1 and Figure 2In the embodiment of the utility model, the low-temperature steam source 1a from the low-temperature reheater inlet of the boiler is transported to the mixed pipeline 2c through the low-temperature pipeline 2a, the high-temperature steam source 1b from the low-temperature reheater outlet of the boiler is transported to the mixed pipeline 2c through the high-temperature pipeline 2b, and the low-temperature steam source 1a and the high-temperature steam source 1b are mixed in the mixed pipeline 2c to form output steam meeting the steam temperature requirement and then output from the blowing main pipe 20, so that the blowing of the boiler heating surface and the air preheater is realized.

[0041] In the embodiment of the utility model, the low-temperature steam source 1a from the low-temperature reheater inlet of the boiler is transported to the mixed pipeline 2c through the low-temperature pipeline 2a, the high-temperature steam source 1b from the low-temperature reheater outlet of the boiler is transported to the mixed pipeline 2c through the high-temperature pipeline 2b, and the low-temperature steam source 1a and the high-temperature steam source 1b are mixed in the mixed pipeline 2c to form output steam meeting the steam temperature requirement and then output from the blowing main pipe 20, so that the blowing of the boiler heating surface and the air preheater is realized.

[0042] The utility model discloses a technical scheme that mixes low-temperature steam source 1a from the inlet of the boiler low-temperature reheater and high-temperature steam source 1b from the outlet of the boiler low-temperature reheater in the mixed pipeline 2c to output output steam meeting the requirements of blowing ash steam temperature and steam pressure, for the blowing ash of the boiler heating surface and the air preheater, without a water injection temperature reduction system, thereby avoiding the problem of steam water carrying in the blowing ash process, reducing the erosion and thinning of the boiler heating surface caused by blowing ash steam water carrying, prolonging the service life of the heating surface pipe around the blowing ash device, in addition, eliminating the blockage of the air preheater caused by blowing ash steam water carrying, reducing the power consumption of the fan, and improving the safety and economy of the boiler operation.

[0043] Please refer to Figure 2 According to the utility model one embodiment, the mixed pipeline 2c is provided with the second temperature controller 22, the low-temperature pipeline 2a is provided with the second regulating valve 21, and the second temperature controller 22 is electrically connected with the second regulating valve 21;By setting the second temperature controller 22 on the mixed pipeline 2c and the second regulating valve 21 on the high-temperature pipeline 2b, the temperature of the output steam in the mixed pipeline 2c can be accurately controlled.

[0044] According to another embodiment of the utility model, the mixed pipeline 2c is provided with the first temperature controller 3 and the second temperature controller 22, the high-temperature pipeline 2b is provided with the first regulating valve 4, the first temperature controller 3 is electrically connected with the first regulating valve 4, the low-temperature pipeline 2a is provided with the second regulating valve 21, and the second temperature controller 22 is electrically connected with the second regulating valve 21;By setting the double temperature control loop, the second temperature controller 22 and the second regulating valve 21 can be used as a backup or auxiliary control loop, which enhances the flexibility and reliability of the blowing ash steam source device 100, and this design can quickly switch to another control loop when a problem occurs in one control loop, ensuring the continuity and stability of the blowing ash process.

[0045] In the embodiment, the first regulating valve 4 and the second regulating valve 21 can adopt pneumatic regulating valves or electric regulating valves, and the embodiment does not limit the specific selection of the first regulating valve 4 and the second regulating valve 21.

[0046] In an embodiment, the temperature matching device 5 is arranged on the mixing pipeline 2c, the low-temperature steam source 1a and a first interface on the temperature matching device 5 are in communication with the low-temperature pipeline 2a, the high-temperature steam source 1b and a second interface on the temperature matching device 5 are in communication with the high-temperature pipeline 2b, and an outlet of the temperature matching device 5 is in communication with the mixing pipeline 2c. The temperature matching device 5 is used to mix the low-temperature steam source 1a and the high-temperature steam source 1b. Specifically, because the temperature difference between the low-temperature steam source 1a and the high-temperature steam source 1b is large, mixing in the mixing pipeline 2c will cause changes in the thermal stress of the metal of the mixing pipeline 2c, which is likely to cause damage to the equipment. By arranging the temperature matching device 5, the first interface on the temperature matching device 5 is in communication with the low-temperature pipeline 2a, the second interface on the temperature matching device 5 is in communication with the high-temperature pipeline 2b, and the outlet of the temperature matching device 5 is in communication with the mixing pipeline 2c. The low-temperature steam source 1a and the high-temperature steam source 1b can be mixed in the temperature matching device 5, eliminating the thermal stress caused by mixing of the low-temperature steam source 1a and the high-temperature steam source 1b, prolonging the service life of the mixing pipeline, improving the stability and safety of the entire steam source device 100, and allowing the low-temperature steam source 1a and the high-temperature steam source 1b to be mixed more uniformly, thereby providing more stable and consistent steam temperature for blowing and improving the blowing efficiency.

[0047] In an embodiment, the temperature matching device 5 is arranged on the mixing pipeline 2c, the low-temperature steam source 1a and a first interface on the temperature matching device 5 are in communication with the low-temperature pipeline 2a, the high-temperature steam source 1b and a second interface on the temperature matching device 5 are in communication with the high-temperature pipeline 2b, and an outlet of the temperature matching device 5 is in communication with the mixing pipeline 2c. The temperature matching device 5 is used to mix the low-temperature steam source 1a and the high-temperature steam source 1b. Specifically, because the temperature difference between the low-temperature steam source 1a and the high-temperature steam source 1b is large, mixing in the mixing pipeline 2c will cause changes in the thermal stress of the metal of the mixing pipeline 2c, which is likely to cause damage to the equipment. By arranging the temperature matching device 5, the first interface on the temperature matching device 5 is in communication with the low-temperature pipeline 2a, the second interface on the temperature matching device 5 is in communication with the high-temperature pipeline 2b, and the outlet of the temperature matching device 5 is in communication with the mixing pipeline 2c. The low-temperature steam source 1a and the high-temperature steam source 1b can be mixed in the temperature matching device 5, eliminating the thermal stress caused by mixing of the low-temperature steam source 1a and the high-temperature steam source 1b, prolonging the service life of the mixing pipeline, improving the stability and safety of the entire steam source device 100, and allowing the low-temperature steam source 1a and the high-temperature steam source 1b to be mixed more uniformly, thereby providing more stable and consistent steam temperature for blowing and improving the blowing efficiency.

[0048] In an embodiment, the regulating valve 6 comprises a pneumatic regulating valve 6a, and a pressure controller 7 is further arranged on the mixing pipeline 2c, the pressure controller 7 is located between the pneumatic regulating valve 6a and the blowpipe 20, and the pressure controller 7 is electrically connected with the pneumatic regulating valve 6a; specifically, the electrical connection between the pressure controller 7 and the pneumatic regulating valve 6a realizes automatic pressure regulation, the pressure controller 7 can control the opening size of the pneumatic regulating valve 6a, thereby controlling the steam source flow ratio of the output steam, so as to realize accurate control of the temperature of the output steam in the mixing pipeline 2c, reduce manual intervention, improve the response speed and operation convenience of the system, and the automatic pressure control also helps to reduce pressure fluctuation, improve the stability, reliability and safety of the entire blowdown system. In the embodiment, the low-temperature steam source 1a enters the temperature matcher 5 through the low-temperature pipeline, the high-temperature steam source 1b adjusts the temperature of the output steam through the first regulating valve 4, the high-temperature steam source 1b and the low-temperature steam source 1a are mixed in the temperature matcher 5 to output steam meeting the blowdown temperature requirement, and then the steam is adjusted in pressure through the pneumatic regulating valve 6a, and finally the blowdown steam meeting the blowdown parameter requirement is output.

[0049] In an embodiment, a first temperature detection point 8 and a first pressure detection point 9 are arranged between the temperature matcher 5 and the regulating valve 6, and / or a second temperature detection point 10 and a second pressure detection point 11 are arranged between the regulating valve 6 and the blowpipe 20; specifically, in the embodiment, the first temperature detection point 8 and the first pressure detection point 9 are arranged between the temperature matcher 5 and the regulating valve 6, and the second temperature detection point 10 and the second pressure detection point 11 are arranged between the regulating valve 6 and the blowpipe 20, the first temperature detection point 8 and the first pressure detection point 9 are used to detect the temperature and pressure of the output steam after mixing in the temperature matcher 5, and the second temperature detection point 10 and the second pressure detection point 11 are used to detect the temperature and pressure of the finally output steam, by arranging two temperature and pressure data detection points at different positions, the temperature and pressure changes of the output steam can be more accurately monitored, more detailed data support can be provided for the blowdown steam source device 100, the parameters of the output steam can be more accurately controlled, the blowdown effect can be ensured, safety accidents caused by over-temperature or over-pressure can be prevented, and the safety of the blowdown steam source device 100 is improved. In addition, in the embodiment, the first temperature detection point 8 can be arranged before the temperature controller, so that the first temperature detection point 8 can serve as a basis for adjusting the parameters of the temperature matcher 5, and the second pressure detection point 11 can be arranged before the pressure controller 7, so that the second pressure detection point 11 can serve as a basis for adjusting the parameters of the pressure controller 7.

[0050] According to the utility model one embodiment, temperature matching ware 5 and adjusting valve 6 between being provided with first temperature detection point 8 and first pressure detection point 9, by setting first temperature detection point 8 and first pressure detection point 9 can detect the temperature and pressure of the output steam after mixing from temperature matching ware 5, to accurately monitor the temperature and pressure variation of output steam, ensure the effect of blowing ash.

[0051] According to the utility model another embodiment, adjusting valve 6 and blowing ash female pipe 20 between being provided with second temperature detection point 10 and second pressure detection point 11, by setting second temperature detection point 10 and second pressure detection point 11 can detect the temperature and pressure of the final output steam, to accurately monitor the temperature and pressure variation of output steam, ensure the effect of blowing ash.

[0052] In an embodiment, safety valve 12 is arranged on mixed pipeline 2c, and the safety valve 12 is located between adjusting valve 6 and blowing ash female pipe 20;Specifically, the safety valve 12 is an important overpressure protection device on the mixed pipeline 2c, when the adjusting valve 6 fails or does not blow ash, the safety valve 12 can be automatically opened when the pressure in the mixed pipeline rises above the allowable value, discharging the overpressure steam, preventing the pressure from continuing to rise, thereby protecting the blowing ash steam source device 100 and the safety of the operating personnel, when the pressure drops to the allowable value, the safety valve 12 is automatically closed, so that the pressure in the mixed pipeline 2c is always below the upper limit of the allowable pressure, automatically preventing overpressure accidents, and ensuring the safe and stable operation of the blowing ash steam source device 100.

[0053] In an embodiment, a first check valve 13 is arranged on the low-temperature pipeline 2a;And / or, a second check valve 14 is arranged on the high-temperature pipeline 2b;Specifically, in the embodiment, the first check valve 13 is arranged on the low-temperature pipeline 2a, and the second check valve 14 is arranged on the high-temperature pipeline 2b, and the first check valve 13 is arranged before the first interface of the temperature matching ware 5, and the second check valve 14 is arranged before the second interface of the temperature matching ware 5, by arranging the first check valve 13, the low-temperature steam source 1a can be prevented from flowing backward in the low-temperature pipeline 2a, by arranging the second check valve 14, the high-temperature steam source 1b can be prevented from flowing backward in the high-temperature pipeline 2b, when the steam changes in the pipeline, the first check valve 13 and the second check valve 14 can be quickly closed to prevent the steam from flowing backward, protect the normal operation of the blowing ash steam source device 100, improve the safety of the blowing ash steam source device 100, avoid damaging or malfunctioning the low-temperature reheater, and also avoid generating local pressure flow among the low-temperature reheater, the low-temperature pipeline and the high-temperature pipeline.

[0054] According to the utility model one embodiment, low temperature pipeline 2a is provided with first check valve 13, through setting first check valve 13 can prevent low temperature steam steam source 1a in low temperature pipeline 2a occurs reverse flow, thereby protecting the normal operation of blowing ash steam source device 100 device.

[0055] According to the utility model another embodiment, high temperature pipeline 2b is provided with second check valve 14, through setting second check valve 14 can prevent high temperature steam steam source 1b in high temperature pipeline 2b occurs reverse flow, thereby protecting the normal operation of blowing ash steam source device 100 device.

[0056] In an embodiment, low temperature pipeline 2a is provided with first manual stop valve 15;And / or, low temperature pipeline 2a is provided with first electric stop valve 16;Specifically, in the embodiment, low temperature pipeline 2a is provided with first manual stop valve 15 and first electric stop valve 16, first manual stop valve 15 provides the direct control of operation, and first electric stop valve 16 provides the possibility of remote control, so that operation is more flexible and convenient, by adjusting the valve opening of first manual stop valve 15 and first electric stop valve 16, the flow of low temperature steam steam source 1a through low temperature pipeline 2a can be accurately controlled, to adapt to different blowing ash requirements, compared with human body, the temperature of low temperature pipeline 2a is higher, and it is not easy to operate, in blowing ash, the flow of low temperature steam steam source 1a can be adjusted by first electric stop valve 16, in maintenance, inspection, repair or emergency, the circulation of low temperature pipeline 2a can be manually closed by first manual stop valve 15, the supply of low temperature steam steam source 1a is cut off in emergency, which helps to improve the safety, reliability and stability of the whole blowing ash steam source device 100;In the embodiment, low temperature pipeline 2a is the main conveying pipeline, and first electric stop valve 16 is set to be fully open, so as to continuously provide low temperature steam steam source 1a.

[0057] According to the utility model one embodiment, low temperature pipeline 2a is provided with first manual stop valve 15, by adjusting the valve opening of first manual stop valve 15, the flow of low temperature steam steam source 1a through low temperature pipeline 2a can be accurately controlled, to adapt to different blowing ash requirements.

[0058] According to the utility model another embodiment, low temperature pipeline 2a is provided with first electric stop valve 16, by adjusting the valve opening of first electric stop valve 16, the flow of low temperature steam steam source 1a through low temperature pipeline 2a can be accurately controlled, to adapt to different blowing ash requirements.

[0059] In an embodiment, the high-temperature pipeline 2b is provided with a second manual stop valve 17; and / or, the high-temperature pipeline 2b is provided with a second electric stop valve 18; specifically, in the present embodiment, the high-temperature pipeline 2b is provided with both the second manual stop valve 17 and the second electric stop valve 18, the second manual stop valve 17 provides direct control of operation, while the second electric stop valve 18 provides the possibility of remote control, making the operation more flexible and convenient, by adjusting the valve opening of the second manual stop valve 17 and the second electric stop valve 18, the flow of the high-temperature steam source 1b through the high-temperature pipeline 2b can be accurately controlled to adapt to different soot-blowing requirements, compared with the human body, the temperature of the high-temperature pipeline 2b is higher and is not easy to operate, in soot-blowing, the flow of the high-temperature steam source 1b can be adjusted through the second electric stop valve 18, in maintenance, inspection, repair or emergency, the flow through the high-temperature pipeline 2b can be closed through the second manual stop valve 17, the supply of the high-temperature steam source 1b is cut off in emergency, which helps to improve the safety, reliability and stability of the entire soot-blowing steam source device 100.

[0060] According to an embodiment of the present application, the high-temperature pipeline 2b is provided with a second manual stop valve 17, by adjusting the valve opening of the second manual stop valve 17, the flow of the high-temperature steam source 1b through the high-temperature pipeline 2b can be accurately controlled to adapt to different soot-blowing requirements.

[0061] According to another embodiment of the present application, the high-temperature pipeline 2b is provided with a second electric stop valve 18, by adjusting the valve opening of the second electric stop valve 18, the flow of the high-temperature steam source 1b through the high-temperature pipeline 2b can be accurately controlled to adapt to different soot-blowing requirements.

[0062] In an embodiment, the mixing pipeline 2c is provided with a third manual stop valve 19; and / or, the high-temperature pipeline 2b is provided with a third electric stop valve (not shown in the figure); specifically, in the present embodiment, the mixing pipeline 2c is provided with the third manual stop valve 19, by adjusting the valve opening of the third manual stop valve 19, the flow of the output steam through the mixing pipeline 2c can be accurately controlled to adapt to different soot-blowing requirements, in maintenance, inspection, repair or emergency, the mixing pipeline 2c can be closed through the third manual stop valve 19, the supply of the output steam is cut off in emergency, which helps to improve the safety, reliability and stability of the entire soot-blowing steam source device 100.

[0063] According to an embodiment of the present application, the high-temperature pipeline 2b is provided with a third electric stop valve, by adjusting the valve opening of the third electric stop valve, the flow of the output steam through the mixing pipeline 2c can be accurately controlled to adapt to different soot-blowing requirements, and the third electric stop valve provides the possibility of remote control, making the operation more flexible and convenient.

[0064] According to another embodiment of the utility model, third manual stop valve 19 and third electric stop valve are arranged on mixed pipeline 2c, third manual stop valve 19 provides direct control of operation, and third electric stop valve provides the possibility of remote control, so that operation is more flexible and convenient, by adjusting the valve opening of third manual stop valve 19 and third electric stop valve, the flow of output steam through mixed pipeline 2c can be accurately controlled to adapt to different soot blowing requirements, when soot blowing, the flow of output steam can be adjusted through third electric stop valve, in the case of maintenance, inspection, repair or emergency, third manual stop valve 19 can be used to close the flow of mixed pipeline 2c, emergency shut-off output steam supply, which helps to improve the safety, reliability and stability of the whole soot blowing steam source device 100.

[0065] The above is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A soot blowing steam source device characterized by comprising: The steam source device comprises a steam source and a soot blowing pipeline, the steam source comprises a low-temperature steam source from a boiler low-temperature reheater inlet and a high-temperature steam source from a boiler low-temperature reheater outlet, the soot blowing pipeline comprises a low-temperature pipeline, a high-temperature pipeline and a mixing pipeline, the low-temperature steam source is communicated with the mixing pipeline through the low-temperature pipeline, the high-temperature steam source is communicated with the mixing pipeline through the high-temperature pipeline, and one end of the mixing pipeline away from the low-temperature pipeline is used for being communicated with a soot blowing main pipeline; a first temperature controller is arranged on the mixing pipeline, a first adjusting valve is arranged on the high-temperature pipeline, and the first temperature controller is electrically connected with the first adjusting valve. And / or, A second temperature controller is arranged on the mixing pipeline, a second adjusting valve is arranged on the low-temperature pipeline, and the second temperature controller is electrically connected with the second adjusting valve.

2. The soot source of claim 1, wherein, A temperature matcher is arranged on the mixing pipeline, the low-temperature steam source and a first interface on the temperature matcher are both communicated with the low-temperature pipeline, the high-temperature steam source and a second interface on the temperature matcher are both communicated with the high-temperature pipeline, and an outlet of the temperature matcher is communicated with the mixing pipeline, and the temperature matcher is used for mixing the low-temperature steam source and the high-temperature steam source.

3. The soot source of claim 2, wherein, An adjusting valve is further arranged on the mixing pipeline, the adjusting valve is located between the temperature matcher and the soot blowing main pipeline, and the adjusting valve is used for adjusting the pressure of output steam in the mixing pipeline.

4. The soot source of claim 3, wherein, The adjusting valve comprises a pneumatic adjusting valve, a pressure controller is further arranged on the mixing pipeline, the pressure controller is located between the pneumatic adjusting valve and the soot blowing main pipeline, and the pressure controller is electrically connected with the pneumatic adjusting valve.

5. The soot source of claim 3, wherein, A first temperature detection point and a first pressure detection point are arranged between the temperature matcher and the adjusting valve. And / or, A second temperature detection point and a second pressure detection point are arranged between the adjusting valve and the soot blowing main pipeline.

6. The soot source of claim 3, wherein, A safety valve is arranged on the mixing pipeline, and the safety valve is located between the adjusting valve and the soot blowing main pipeline.

7. The soot source of any one of claims 1 to 6, wherein, A first check valve is arranged on the low-temperature pipeline. And / or, A second check valve is arranged on the high-temperature pipeline.

8. The soot source of any one of claims 1 to 6, wherein, A first manual stop valve is arranged on the low-temperature pipeline. And / or, A first electric stop valve is arranged on the low-temperature pipeline.

9. The soot source of any one of claims 1 to 6, wherein, A second manual stop valve is arranged on the high-temperature pipeline. And / or, A second electric stop valve is arranged on the high-temperature pipeline.

10. The soot source of any one of claims 1 to 6, wherein, A third manual stop valve is arranged on the mixing pipeline. And / or, A third electric stop valve is arranged on the high-temperature pipeline.

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