CN217781187U

CN217781187U - System for automatically adjusting flow of descaling medium of dry TRT (blast furnace Top gas recovery turbine) blade

Info

Publication number: CN217781187U
Application number: CN202221948567.8U
Authority: CN
Inventors: 杨培俊; 王婷婷; 方肖达; 黄世高
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-11
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses an automatically regulated dry-type TRT blade scale removal medium flow system belongs to flow dynamic control technical field. The TRT unit of the utility model is connected with a medium circulation pipeline through a TRT inlet gas pipeline, a hydraulic butterfly valve is arranged on the medium circulation pipeline and is controlled by a hydraulic proportional system or a hydraulic three-position valve control system; the hydraulic proportional system comprises a vibration sensor and a computer system, wherein the vibration sensor is arranged on the TRT unit and connected with the computer system, and the computer system controls the opening of the hydraulic butterfly valve; the hydraulic three-position valve control system comprises an automatic control system and a quantitative adjusting system, wherein the automatic control system is connected with a computer system and accurately controls the opening of the hydraulic butterfly valve, and the quantitative adjusting system quantitatively controls the opening of the hydraulic butterfly valve. The utility model discloses the water medium flow is contained in the scale removal of dynamic adjustment dry-type TRT blade, can avoid the corruption of excessive water medium to the TRT blade to reduce the use amount of scale removal medium.

Description

System for automatically adjusting flow of descaling medium of dry TRT (TRT) blade

Technical Field

The utility model relates to a fluid medium flow dynamic regulation technical field, more specifically say, relate to an automatically regulated dry-type TRT blade scale removal medium flow system.

Background

A blast furnace gas excess pressure power generation turbine (TRT for short) is a device which converts pressure energy and heat energy of blast furnace gas, which is a byproduct of blast furnace smelting, into electric energy after the blast furnace gas passes through a dust removal system. Due to the requirements on environmental protection and energy conservation, the current blast furnace gas dust removal modes are dry dust removal, and the corresponding TRT is called dry TRT. Because the gas subjected to dry dedusting still contains a large amount of salt impurities, after the gas enters a TRT system to do work, along with the reduction of the temperature of the gas, the salt impurities (the main component is ammonium chloride) can be separated out and adhered to the dynamic and static blades of the TRT, which is called 'salt accumulation', and the scaling substances can damage the dynamic balance of a TRT rotor, so that the vibration of a unit exceeds the standard, and a shutdown accident is caused.

According to practical experience, on the premise that the vibration value is not influenced by other mechanical, electrical and airflow factors when the TRT unit runs, the vibration value of the TRT unit is in direct proportion to the amount of accumulated salt on the blades, the amount of accumulated salt on the blades of the TRT unit is large, the vibration value of the TRT unit is increased, the accumulated salt on the blades of the unit is reduced, and the vibration value of the TRT unit is reduced. To ensure safe and stable operation of the TRT, the blades must be cleaned frequently. At present, three common blade descaling modes are available: the first mode is to remove the salt by taking off the cover in a shutdown way, the second mode is to add a special scale inhibitor into the gas pipeline, and the third mode is to introduce high-temperature saturated steam or high-pressure steam into the gas pipeline for online cleaning, and dissolve the salt on the blades by the high-temperature steam or the high-pressure steam.

The third mode has low investment cost and can be used for on-line treatment, so the third mode is widely applied. For example, patent publication No. CN206111250U, with the name: TRT impeller blade scale deposits online clearance system, patent publication No. CN211872022U, name: a dry type TRT purging and ash cleaning system is disclosed in patent publication number CN208879178U, and is named as: the patent refers to the field of 'cleaning or descaling of dust-laden surfaces of blades'. When water dissolves the accumulated salt of the blades, the water and chloride ions and sulfate ions in the coal gas can also form acidic substances to corrode the blades, pipelines and other parts of the TRT, so that the descaling mode of the blades needs to dynamically adjust the fluid medium, the medium is quantitatively and regularly controlled, the less accumulated salt of the blades is used, and the TRT unit is stopped when the vibration value is reduced after the accumulated salt of the blades is cleaned.

Patent publication No. CN206111250U, with the name: the TRT impeller blade scale online cleaning system is provided with a steam regulating valve, and proposes the idea of optimizing the amount and time of introduced steam, but does not propose a specific scheme. Patent publication No. CN211872022U, entitled: a dry type TRT purging and ash cleaning system is provided, in the application, the vibration signal detection and the interlocking controller are used for opening and closing a steam valve when the vibration value of a turbine is larger than or equal to 60um and is smaller than or equal to 30um, so that the automatic control of the on-off of a descaling medium is realized to a certain extent, but the quantitative control of the medium flow cannot be realized, and how a first stop valve and a second stop valve participate in the automatic opening and closing control is not clearly described.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model provides a not enough to prior art, the utility model provides an automatically regulated dry-type TRT blade scale removal medium flow system, the utility model relates to a according to turbine vibration value size, the system of dynamic adjustment dry-type TRT blade scale removal aqueous medium flow can avoid the corruption of excessive aqueous medium to the TRT blade to reduce the use amount of scale removal medium.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses an automatically regulated dry-type TRT blade scale removal medium flow system, including TRT unit and TRT entry gas piping, TRT unit passes through TRT entry gas piping connection medium circulation pipeline, install the hydraulic pressure butterfly valve on the medium circulation pipeline, this hydraulic pressure butterfly valve is controlled by hydraulic pressure proportional system or hydraulic pressure three-position valve accuse system;

the hydraulic proportional system comprises a vibration sensor and a computer system, wherein the vibration sensor is arranged on the TRT unit and connected with the computer system, and the computer system controls the opening of the hydraulic butterfly valve;

the hydraulic three-position valve control system comprises an automatic control system and a quantitative adjusting system, wherein the automatic control system is connected with a computer system and accurately controls the opening of the hydraulic butterfly valve, and the quantitative adjusting system quantitatively controls the opening of the hydraulic butterfly valve.

Furthermore, the automatic control system comprises a second hydraulic ball valve, a second hydraulic oil return one-way valve, an electro-hydraulic proportional reversing valve, a pilot reversing valve, a third hydraulic control one-way valve, a fourth hydraulic control one-way valve, a first pressure measuring joint, a second pressure measuring joint, a third hydraulic ball valve, a fourth hydraulic ball valve and an oil cylinder;

one end of the second hydraulic ball valve is connected with a hydraulic station pressure pipeline, the other end of the second hydraulic ball valve is connected with the electro-hydraulic proportional reversing valve, one end of the second hydraulic oil return one-way valve is connected with a hydraulic station oil return pipeline, and the other end of the second hydraulic oil return one-way valve is also connected with the electro-hydraulic proportional reversing valve; the electro-hydraulic proportional directional valve is connected with two branch pipes, and the two branch pipes are respectively and correspondingly connected with a third hydraulic control one-way valve and a fourth hydraulic control one-way valve; the third hydraulic control one-way valve is sequentially connected with the first pressure measuring joint and the third hydraulic ball valve, and the fourth hydraulic control one-way valve is sequentially connected with the second pressure measuring joint and the fourth hydraulic ball valve; the third hydraulic ball valve and the fourth hydraulic ball valve are both connected with an oil cylinder, and the oil cylinder is connected with a hydraulic butterfly valve; the third hydraulic control one-way valve and the fourth hydraulic control one-way valve are further connected with a pilot reversing valve, one branch pipe of the pilot reversing valve is connected between the second hydraulic ball valve and the electro-hydraulic proportional reversing valve, and the other branch pipe is connected with a hydraulic station oil discharge pipeline.

Furthermore, the quantitative adjusting system comprises a first hydraulic ball valve, a first hydraulic oil return one-way valve, an electromagnetic directional valve, a first hydraulic control one-way valve and a second hydraulic control one-way valve;

the hydraulic pressure station pressure pipeline is connected to first hydraulic pressure ball valve one end, and the electromagnetic directional valve is connected to the other end, hydraulic pressure station oil return pipeline is connected to first hydraulic pressure oil return check valve one end, and the electromagnetic directional valve is connected to the other end, two branch pipes are connected to the electromagnetic directional valve, correspond respectively on two branch pipes and connect first liquid accuse check valve, second liquid accuse check valve, and first liquid accuse check valve, second liquid accuse check valve connect first pressure measurement joint, second pressure measurement joint respectively.

Furthermore, in the hydraulic proportional system, the computer system controls the electro-hydraulic proportional directional valve through a proportional amplifier.

Furthermore, the hydraulic proportional system is also provided with a butterfly valve position sensor which feeds back a position signal of the hydraulic butterfly valve.

Furthermore, the medium flowing pipeline is sequentially provided with a first stop valve, a hydraulic butterfly valve, a second stop valve, a third stop valve, a fourth stop valve and a check valve along the medium flowing direction, and a flow meter is arranged between the third stop valve and the fourth stop valve; the medium circulation pipeline is also provided with a pressure gauge.

Furthermore, the medium circulation pipeline also comprises a medium accident bypass circuit, and a fifth stop valve is arranged on the medium accident bypass circuit.

Furthermore, the electro-hydraulic proportional reversing valve is a three-position four-way reversing valve, and the pilot reversing valve is a two-position four-way valve.

Furthermore, the electromagnetic directional valve is a three-position four-way directional valve, and forms a hydraulic locking loop together with the third hydraulic control one-way valve and the fourth hydraulic control one-way valve.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) The utility model discloses an automatic adjust dry-type TRT blade scale removal medium flow system, install a hydraulic pressure butterfly valve on dry-type TRT blade scale removal medium pipeline, realize the break-make and the flow size control of medium; and the hydraulic proportional control is adopted for the hydraulic butterfly valve, the opening of the butterfly valve is interlocked with the TRT vibration value parameter through a hydraulic proportional control system, and the automatic control of the TRT descaling medium flow according to the actual vibration value is realized.

(2) The utility model discloses an automatically regulated dry-type TRT blade scale removal medium flow system adopts two sets of hydraulic system, and one set is used for automatically regulated control's hydraulic pressure proportional system, and another set adopts hydraulic pressure tribit valve accuse system, takes auto-lock locate function, can realize quantitative control hydraulic pressure butterfly valve, adjusts the current automatically controlled governing system that flow compares simultaneously, and hydraulic pressure proportional control system compact structure makes things convenient for the on-the-spot maintenance and maintains.

(3) The utility model discloses an automatic adjust dry-type TRT blade scale removal medium flow system, when adopting hydraulic pressure closed loop control, the precision is high, and response speed is fast, and TRT blade scaling scale deposit can effectively be eliminated to the use amount of control TRT scale removal medium that can be quick, accurate, can prevent again that excessive aqueous medium from to the corruption of TRT blade, improves TRT operating efficiency and life.

(4) The utility model discloses an automatically regulated dry-type TRT blade scale removal medium flow system, control executive component are hydraulic pressure butterfly valve, and current electrical control butterfly valve that compares has better high temperature resistance, bigger load rigidity.

(5) The utility model discloses an automatically regulated dry-type TRT blade scale removal medium flow system through hydraulic pressure remote control, can reduce operating personnel to on-the-spot switch valve's number of times, reduces workman intensity of labour, can also prevent to be scalded by steam.

Drawings

FIG. 1 is a schematic diagram of a dry TRT vane descaling medium flow regulating system;

FIG. 2 is a schematic diagram of a butterfly valve hydraulic proportional control system;

fig. 3 is a schematic diagram of the hydraulic control of a butterfly valve.

The reference numbers in the schematic drawings illustrate:

11. a pressure gauge; 12. a first shut-off valve; 13. a hydraulic butterfly valve; 14. a second stop valve; 15. a third stop valve; 16. a flow meter; 17. a fourth stop valve; 18. a check valve; 19. a vibration sensor; 110. a TRT inlet gas conduit; 111. a TRT unit; 112. a fifth stop valve;

21. a first hydraulic ball valve; 22. a first hydraulic oil return check valve; 23. a second hydraulic ball valve; 24. a second hydraulic return check valve; 25. an electromagnetic directional valve; 26. an electro-hydraulic proportional directional valve; 27. a pilot operated directional control valve; 28. a first hydraulic control check valve; 29. a second hydraulic control check valve; 210. a third hydraulic control one-way valve; 211. a fourth hydraulic control check valve; 212. a first pressure tap; 213. a second pressure tap; 214. a third hydraulic ball valve; 215. a fourth hydraulic ball valve; 216. and an oil cylinder.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Example 1

As shown in fig. 1, the automatic dry-type TRT vane descaling medium flow system of the present embodiment is installed on a TRT inlet gas pipe 110. The port is composed of a pressure gauge 11, a first stop valve 12, a hydraulic butterfly valve 13, a second stop valve 14, a third stop valve 15, a flow meter 16, a fourth stop valve 17, a check valve 18, a vibration sensor 19, and a TRT inlet gas conduit 110, wherein the first stop valve 12, the hydraulic butterfly valve 13, the second stop valve 14, the third stop valve 15, the fourth stop valve 17, and the check valve 18 are connected in sequence through a medium flow conduit, and the pressure gauge 11 and the flow meter 16 are also arranged on the medium flow conduit. The check valve 18 is connected with a TRT inlet gas pipeline 110, the TRT inlet gas pipeline 110 is connected with a TRT unit 111, and a vibration sensor 19 for monitoring the vibration value of a key point in real time is arranged on the TRT unit 111. The medium flow circuit also includes a medium accident bypass circuit, which is composed of a fifth stop valve 112 and a corresponding pipe.

Referring to fig. 2, the vibration sensor 19 is connected to a computer system, the computer system controls the electro-hydraulic proportional directional valve 26 through a proportional amplifier, the electro-hydraulic proportional directional valve 26 is connected to a driving oil cylinder 216, the oil cylinder 216 controls the hydraulic butterfly valve 13, and a butterfly valve position sensor is mounted on the hydraulic butterfly valve 13 to feed back a butterfly valve position signal. The vibration sensor 19 inputs a current value of 4-20mA to the electrical conversion system, then a corresponding regulating current is output through the computer system, and the opening of the electro-hydraulic proportional directional valve 26 is controlled through the proportional amplifier, so that the opening of the hydraulic butterfly valve 13 is controlled, and the control of the medium flow is realized.

Further, with reference to fig. 3, the hydraulic circuit is made up of two systems, an automatic control system and a quantitative regulation system.

The automatic control system comprises a second hydraulic ball valve 23, a second hydraulic oil return one-way valve 24, an electro-hydraulic proportional reversing valve 26, a pilot reversing valve 27, a third hydraulic control one-way valve 210, a fourth hydraulic control one-way valve 211, a first pressure measuring joint 212, a second pressure measuring joint 213, a third hydraulic ball valve 214, a fourth hydraulic ball valve 215, an oil cylinder 216 and a hydraulic butterfly valve 13.

One end of the second hydraulic ball valve 23 is connected with a hydraulic station pressure pipeline, the other end is connected with an electro-hydraulic proportional reversing valve 26, one end of the second hydraulic oil return one-way valve 24 is connected with a hydraulic station oil return pipeline, and the other end is also connected with the electro-hydraulic proportional reversing valve 26. The electro-hydraulic proportional directional valve 26 is connected with two branch pipes, and the two branch pipes are correspondingly connected with a third hydraulic control one-way valve 210 and a fourth hydraulic control one-way valve 211 respectively. The third pilot-controlled check valve 210 is connected to the first pressure measuring joint 212 and the third hydraulic ball valve 214 in sequence, and the fourth pilot-controlled check valve 211 is connected to the second pressure measuring joint 213 and the fourth hydraulic ball valve 215 in sequence. The third hydraulic ball valve 214 and the fourth hydraulic ball valve 215 are both connected with an oil cylinder 216, and the oil cylinder 216 is connected with the hydraulic butterfly valve 13. The third hydraulic control one-way valve 210 and the fourth hydraulic control one-way valve 211 are further connected with a pilot reversing valve 27, one branch pipe of the pilot reversing valve 27 is connected between the second hydraulic ball valve 23 and the electro-hydraulic proportional reversing valve 26, and the other branch pipe is connected with a hydraulic station oil discharge pipeline.

The quantitative adjusting system comprises a first hydraulic ball valve 21, a first hydraulic oil return one-way valve 22, an electromagnetic directional valve 25, a first hydraulic control one-way valve 28, a second hydraulic control one-way valve 29, a first pressure measuring joint 212, a second pressure measuring joint 213, a third hydraulic ball valve 214, a fourth hydraulic ball valve 215, an oil cylinder 216 and a hydraulic butterfly valve 13.

The hydraulic pressure station pressure pipeline is connected to first hydraulic pressure ball valve 21 one end, and solenoid directional valve 25 is connected to the other end, hydraulic pressure station oil return pipeline is connected to first hydraulic pressure oil return check valve 22 one end, and solenoid directional valve 25 is connected to the other end, two branch pipes are connected to solenoid directional valve 25, correspond respectively on two branch pipes and be connected with first pilot operated check valve 28, second pilot operated check valve 29, and first pilot operated check valve 28, second pilot operated check valve 29 are connected first pressure measurement respectively and are connected 212, second pressure measurement and connect 213.

The electro-hydraulic proportional directional valve 26 in the automatic control system is a three-position four-way directional valve, the middle position function is a Y-shaped, the pilot directional valve 27 is a two-position four-way directional valve, and the hydraulic system can control the opening of the oil cylinder 216 under the control of the current of the electro-hydraulic proportional directional valve 26 with a given hydraulic proportion, so that the opening of the hydraulic butterfly valve 13 is accurately controlled.

The electromagnetic directional valve 25 in the quantitative regulation system is a three-position four-way directional valve, the middle position function is Y-shaped, the three-position four-way directional valve, the third hydraulic control one-way valve 210 and the fourth hydraulic control one-way valve 211 form a hydraulic locking loop, the forward or backward distance of the oil cylinder 216 can be controlled by controlling the power-on time of the electromagnets DT1/DT2 in two directions of the electromagnetic directional valve 25, after the electromagnetic directional valve 25 is powered off, the electromagnetic directional valve 25 returns to the middle position, and the oil cylinder 216 is locked at the current position, so that the opening degree of the hydraulic butterfly valve 13 is quantitatively controlled.

In fig. 3, a port P is connected to a pressure main pipe of the hydraulic station, a port T is connected to an oil return main pipe of the hydraulic station, and a port L is connected to an oil drain main pipe of the hydraulic station.

The present embodiment has three control schemes:

the first method comprises the following steps: hydraulic full-automatic adjusting scheme

The first and

second cutoff valves

12 and 14 are opened, and the fifth cutoff valve 112 is closed.

The pilot change valve 27 is electrified, and the regulating valve system is automatically placed in a full-automatic regulating state. The vibration value of the TRT set is compared with the vibration value set by the computer, corresponding control current (4-20 mA) is output to the electro-hydraulic proportional directional valve 26 through PID control of the computer, meanwhile, the pilot directional valve 27 is opened, the third hydraulic control one-way valve 210 and the fourth hydraulic control one-way valve 211 are opened, the electro-hydraulic proportional directional valve 26 outputs corresponding hydraulic flow to the oil cylinder 216, and the corresponding opening degree of the oil cylinder is provided, so that the corresponding opening degree of the hydraulic butterfly valve 13 is controlled, and corresponding and accurate descaling medium flow is provided for the TRT set 111.

And the second method comprises the following steps: quantitative adjustment scheme

The first and

second cutoff valves

12 and 14 are opened, and the fifth cutoff valve 112 is closed.

When the full-automatic scheme cannot be put into operation, the pilot reversing valve 27 is powered off, and the system is automatically switched to a semi-automatic adjusting state.

The first hydraulic ball valve 21 is ensured to be in an open state at this time. When the electromagnet DT1 of the electromagnetic directional valve 25 is electrified, the oil cylinder 216 starts to retract, the hydraulic butterfly valve 13 for controlling the flow of the descaling medium starts to close, and the flow of the medium is reduced. When the electromagnet DT1 is powered off, the valve core of the electromagnetic directional valve 25 returns to the neutral position, and the hydraulic butterfly valve 13 stops and is locked under the action of the first hydraulic control one-way valve 28 and the second hydraulic control one-way valve 29. Similarly, the electromagnet DT2 of the electromagnetic directional valve 25 is electrified, the piston rod of the oil cylinder 216 begins to extend, the hydraulic butterfly valve 13 for controlling the flow begins to be opened, and the medium flow is increased. When the electromagnet DT2 is de-energized, the valve core of the electromagnetic directional valve 25 returns to the neutral position, and the hydraulic butterfly valve 13 stops and is locked under the action of the first hydraulic control one-way valve 28 and the second hydraulic control one-way valve 29. The medium flow can be controlled according to the length of the electricity obtaining time of the electromagnets DT1/DT2 in two directions of the electromagnetic directional valve 25, and the opening of the hydraulic butterfly valve 13 can be controlled, so that the medium flow can be quantitatively controlled.

And the third is that: manual control scheme

The regulation scheme can ensure that the normal supply of the TRT blade descaling medium is ensured under the fault or maintenance state of the first full-automatic control scheme and the second semi-automatic control scheme. At this time, the first cut-off valve 12 on the medium line is closed, the fifth cut-off valve 112 is opened, and the trt descaling medium is in a full-flow cleaning state.

The embodiment has three control schemes of full-automatic control, semi-automatic control and manual control, and the system is reliable and simple to adjust.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides an automatic adjust dry-type TRT blade scale removal medium flow system, includes TRT unit (111) and TRT entry gas piping (110), TRT unit (111) are through TRT entry gas piping (110) connection medium circulation pipeline, its characterized in that: a hydraulic butterfly valve (13) is arranged on the medium flow pipeline, and the hydraulic butterfly valve (13) is controlled by a hydraulic proportional system or a hydraulic three-position valve control system;

the hydraulic proportional system comprises a vibration sensor (19) and a computer system, wherein the vibration sensor (19) is installed on the TRT set (111), the vibration sensor (19) is connected with the computer system, and the computer system controls the opening of the hydraulic butterfly valve (13);

the hydraulic three-position valve control system comprises an automatic control system and a quantitative adjusting system, wherein the automatic control system is connected with a computer system and accurately controls the opening of the hydraulic butterfly valve (13), and the quantitative adjusting system quantitatively controls the opening of the hydraulic butterfly valve (13).

2. The system of automatically adjusting dry TRT blade scale removal medium flow of claim 1, wherein: the automatic control system comprises a second hydraulic ball valve (23), a second hydraulic oil return one-way valve (24), an electro-hydraulic proportional reversing valve (26), a pilot reversing valve (27), a third hydraulic control one-way valve (210), a fourth hydraulic control one-way valve (211), a first pressure measuring joint (212), a second pressure measuring joint (213), a third hydraulic ball valve (214), a fourth hydraulic ball valve (215) and an oil cylinder (216);

one end of a second hydraulic ball valve (23) is connected with a hydraulic station pressure pipeline, the other end of the second hydraulic ball valve is connected with an electro-hydraulic proportional reversing valve (26), one end of a second hydraulic oil return one-way valve (24) is connected with a hydraulic station oil return pipeline, and the other end of the second hydraulic oil return one-way valve is also connected with the electro-hydraulic proportional reversing valve (26); the electro-hydraulic proportional directional valve (26) is connected with two branch pipes, and the two branch pipes are respectively and correspondingly connected with a third hydraulic control one-way valve (210) and a fourth hydraulic control one-way valve (211); the third hydraulic control one-way valve (210) is sequentially connected with the first pressure measuring joint (212) and the third hydraulic ball valve (214), and the fourth hydraulic control one-way valve (211) is sequentially connected with the second pressure measuring joint (213) and the fourth hydraulic ball valve (215); the third hydraulic ball valve (214) and the fourth hydraulic ball valve (215) are both connected with an oil cylinder (216), and the oil cylinder (216) is connected with a hydraulic butterfly valve (13); the third hydraulic control one-way valve (210) and the fourth hydraulic control one-way valve (211) are further connected with a pilot reversing valve (27), one branch pipe of the pilot reversing valve (27) is connected between the second hydraulic ball valve (23) and the electro-hydraulic proportional reversing valve (26), and the other branch pipe is connected with a hydraulic station oil drainage pipeline.

3. The system of automatically adjusting dry TRT blade scale removal medium flow of claim 2, wherein: the quantitative adjusting system comprises a first hydraulic ball valve (21), a first hydraulic oil return one-way valve (22), an electromagnetic reversing valve (25), a first hydraulic control one-way valve (28) and a second hydraulic control one-way valve (29);

hydraulic pressure station pipeline under pressure is connected to first hydraulic pressure ball valve (21) one end, and solenoid directional valve (25) are connected to the other end, hydraulic pressure station oil return pipeline is connected to first hydraulic pressure oil return check valve (22) one end, and solenoid directional valve (25) are connected to the other end, two branch pipes are connected to solenoid directional valve (25), correspond respectively on two branch pipes and connect first liquid accuse check valve (28), second liquid accuse check valve (29), and first pressure measurement connects (212), second pressure measurement connects (213) respectively in first liquid accuse check valve (28), second liquid accuse check valve (29).

4. The system of claim 3, wherein the system is configured to automatically adjust the flow of dry TRT blade descaling media: in the hydraulic proportional system, a computer system controls an electro-hydraulic proportional directional valve (26) through a proportional amplifier.

5. The system of claim 4, wherein the system is configured to automatically adjust the flow of dry TRT blade descaling media according to claim 4, wherein: the hydraulic proportional system is also provided with a butterfly valve position sensor which feeds back a position signal of the hydraulic butterfly valve (13).

6. The system of automatically adjusting dry TRT blade scale removal medium flow according to claim 5, wherein: the medium circulation pipeline is sequentially provided with a first stop valve (12), a hydraulic butterfly valve (13), a second stop valve (14), a third stop valve (15), a fourth stop valve (17) and a check valve (18) along the medium circulation direction, and a flow meter (16) is arranged between the third stop valve (15) and the fourth stop valve (17); the medium circulation pipeline is also provided with a pressure gauge (11).

7. The system of automatically adjusting dry TRT blade scale removal medium flow according to claim 6, wherein: the medium circulation pipeline also comprises a medium accident bypass circuit, and a fifth stop valve (112) is arranged on the medium accident bypass circuit.

8. The system of claim 7, wherein the system is configured to automatically adjust the flow of dry TRT blade descaling media: the electro-hydraulic proportional reversing valve (26) is a three-position four-way reversing valve, and the pilot reversing valve (27) is a two-position four-way valve.

9. The system of automatically adjusting dry TRT blade scale removal medium flow of claim 8, wherein: the electromagnetic directional valve (25) is a three-position four-way directional valve, and forms a hydraulic locking loop together with the third hydraulic control one-way valve (210) and the fourth hydraulic control one-way valve (211).