CN217503716U

CN217503716U - Boiler body soot blowing steam source pressure reduction station

Info

Publication number: CN217503716U
Application number: CN202221060493.4U
Authority: CN
Inventors: 周春光; 余其芳; 江云锋; 邵朱强; 廖斌
Original assignee: Quzhou Donggang Environmental Protection Thermal Power Co ltd
Current assignee: Quzhou Donggang Environmental Protection Thermal Power Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-27
Anticipated expiration: 2032-05-05

Abstract

The utility model discloses a boiler body soot blowing steam source pressure reducing station which comprises a manual stop valve, wherein the output port of the manual stop valve is communicated with an electric stop valve through a connecting pipe, the output port of the electric stop valve is communicated with a high-pressure pipe, one end of the high-pressure pipe is communicated with a first pneumatic regulating valve, one end of the first pneumatic regulating valve is communicated with a first pipeline, and one end of the first pipeline is communicated with a second pipeline through a three-way pipe; when the device is used, when the medium flows to reduce pressure, the manual stop valve and the electric stop valve are used for adjusting to cut off and throttle the medium, the first pneumatic regulating valve and the safety valve are used for being matched with the load cell for adjustment, when the device is used for adjusting the pressure, the external PLC is used for setting, 4-20 milliampere signals are sent to the positioner, the 4-20 milliampere signals correspond to the opening of the first pneumatic regulating valve by 0-100%, the automatic adjustment of the pressure is realized, and meanwhile, the first pneumatic regulating valve has the characteristics of sensitive adjustment and high switching speed so as to ensure that the pressure behind the pneumatic regulating valve is within a set pressure range.

Description

Boiler body soot blowing steam source pressure reduction station

Technical Field

The utility model relates to a power station steam blows grey technical field, in particular to boiler body blows grey steam source decompression station.

Background

The apparatus for removing ash deposit on the heated surface of boiler is composed of ash-blowing tube and operation valve. Generally, the device is respectively arranged on the furnace walls of a boiler furnace, a horizontal flue, a tail flue and the like. According to the structure, there are several types, such as gun type, rotary type, telescopic type, etc. According to different used media, three types of air soot blowers, steam soot blowers and hydraulic soot blowers are provided, and the steam soot blowers are boilers in thermal power plants and boilers in other industries and are necessary equipment for removing soot on the heating surface of the boilers, so that the heat efficiency of the boilers is improved, and the steam soot blowers are energy-saving and are also a branch of the boiler soot blowers.

However, the existing boiler soot blowing steam source pressure reduction technology has a certain problem, in the existing soot blowing system, the regulation precision of the pressure reduction from the medium flow direction is poor, the response time is long, the pressure cannot be regulated quickly, and the operation efficiency of the whole system is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a boiler body blows grey vapour source decompression station, utilizes first pneumatic control valve and relief valve collocation load cell to adjust, and when this equipment carried out pressure adjustment, first pneumatic control valve still had switching speed fast, and automatic regulation's characteristics can be realized to the outside PLC of collocation.

In order to achieve the above object, the utility model discloses a main technical scheme include:

boiler body soot blowing steam source decompression station includes: the manual stop valve is characterized in that an output port of the manual stop valve is communicated with an electric stop valve through a connecting pipe, an output port of the electric stop valve is communicated with a high-pressure pipe, one end of the high-pressure pipe is communicated with a first pneumatic regulating valve, one end of the first pneumatic regulating valve is communicated with a first pipeline, and one end of the first pipeline is communicated with a second pipeline through a three-way pipe;

first nonrust steel pipe and the nonrust steel pipe of second communicate in proper order the outside of second pipeline, first nonrust steel pipe with all install stop valve and return bend for the instrument on the nonrust steel pipe of second, pressure transmitter is installed to the one end of first nonrust steel pipe, the one end intercommunication of the nonrust steel pipe of second has the constant diameter tee bend, SOR pressure switch and manometer are installed in proper order to two delivery outlets of constant diameter tee bend.

Preferably, the output port of the top of the three-way pipe is communicated with a safety valve, the output port of the safety valve is communicated with a hydrophobic disc, and the top of the hydrophobic disc is communicated with an exhaust pipe.

Preferably, T-shaped plates are mounted outside the high-pressure pipe, the first pipeline and the second pipeline, and the bottoms of the T-shaped plates are mounted on the support frame through connecting seats.

Preferably, one end of the top of the exhaust pipe is communicated with a second pneumatic regulating valve, and an output port of the second pneumatic regulating valve is communicated with a Y-shaped tee.

Preferably, a plurality of steel plates are installed outside the exhaust pipe, and a waist-shaped groove is formed in each steel plate.

Preferably, a copper tube is installed on the first pneumatic regulating valve, and a cutting sleeve type ball valve is installed at one end of the copper tube.

Preferably, one end of the second pipeline is communicated with a filter pipe.

Preferably, a plate cover is mounted on the outside of the hydrophobic plate.

The utility model discloses possess following beneficial effect at least: the utility model discloses during the use, during the decompression of medium flow direction, utilize manual stop valve, electronic stop valve to adjust and play the effect of cutting off and throttling to the medium, utilize first pneumatic control valve and relief valve collocation load cell to adjust, when this equipment carries out pressure adjustment, first pneumatic control valve can set for through outside PLC, realizes the automatically regulated of pressure, and simultaneously, first pneumatic control valve has the characteristics of adjusting sensitively, switching speed is fast.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a first stainless steel tube and a second stainless steel tube according to the present invention;

fig. 3 is the structure schematic diagram of the three-way pipe and the exhaust pipe in the utility model.

The reference numbers illustrate: 1. a manual stop valve; 2. an electrically operated shutoff valve; 3. a high pressure pipe; 4. a connecting seat; 5. a support frame; 6. a first pneumatic regulating valve; 7. a red copper tube; 8. a first conduit; 9. a ferrule type ball valve; 10. a three-way pipe; 11. a T-shaped plate; 12. an exhaust pipe; 13. a Y-shaped tee joint; 14. a pressure transmitter; 15. a first stainless steel tube; 16. bending the pipe; 17. a second stainless steel tube; 18. a second conduit; 19. a filter tube; 20. a stop valve for an instrument; 21. an SOR pressure switch; 22. a constant diameter tee joint; 23. a pressure gauge; 24. a second pneumatic regulating valve; 25. a steel plate; 26. a dish cover; 27. a hydrophobic pan; 28. a safety valve.

Detailed Description

The embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present application can be fully understood and implemented.

Referring to fig. 1 to 3, in the embodiment of the present invention,

boiler body soot blowing steam source decompression station includes: manual stop valve 1, first stainless steel pipe 15 and second stainless steel pipe 17.

The delivery outlet of manual stop valve 1 has electric stop valve 2 through the connecting pipe intercommunication, and the delivery outlet intercommunication of electric stop valve 2 has high-pressure pipe 3, and the one end intercommunication of high-pressure pipe 3 has first pneumatic control valve 6, and the one end intercommunication of first pneumatic control valve 6 has first pipeline 8, and the one end of first pipeline 8 is passed through three-way pipe 10 intercommunication and is had second pipeline 18.

When the boiler is used, superheated steam is led out from a low-temperature superheater header of the boiler through the temperature reduction station, and the manual stop valve 1 and the electric stop valve 2 are used for adjusting the medium to have the functions of cutting and throttling when the medium flow is reduced in pressure.

The first stainless steel pipe 15 and the second stainless steel pipe 17 are sequentially communicated outside the second pipeline 18, a stop valve 20 for an instrument and a bent pipe 16 are installed on the first stainless steel pipe 15 and the second stainless steel pipe 17, a pressure transmitter 14 is installed at one end of the first stainless steel pipe 15, an equal-diameter tee 22 is communicated at one end of the second stainless steel pipe 17, an SOR pressure switch 21 and a pressure gauge 23 are sequentially installed at two output ports of the equal-diameter tee 22, the first pneumatic regulating valve 6 is matched with a pressure measuring element for regulation, when the pressure regulation is carried out by the device, an external PLC sets a 4-20 milliampere signal to be sent to a positioner, the 4-20 milliampere signal corresponds to 0-100% of the opening of the first pneumatic regulating valve 6, the automatic regulation of the pressure is realized, and the pressure is ensured to be within a set pressure range.

The top output port of the three-way pipe 10 is communicated with a safety valve 28, the output port of the safety valve 28 is communicated with a hydrophobic disc 27, the top of the hydrophobic disc 27 is communicated with an exhaust pipe 12, when the pressure exceeds a specified value when the first pneumatic regulating valve 6 is matched with a pressure measuring element for regulation, the safety valve 28 is opened, and air flow is exhausted out of the equipment, so that the safety performance is improved.

The drain pan 27 guides the condensed water to be discharged when the temperature of the steam changes to generate the condensed water; the high-pressure pipe 3, the first pipeline 8 and the second pipeline 18 are externally provided with T-shaped plates 11, the bottoms of the T-shaped plates 11 are arranged on the support frame 5 through the connecting seats 4, the high-pressure pipe 3, the first pipeline 8 and the second pipeline 18 are arranged on the support frame 5 through the connecting seats 4 and the T-shaped plates 11, and the support frame 5 can support equipment after being arranged; one end of the top of the exhaust pipe 12 is communicated with a second pneumatic regulating valve 24, an output port of the second pneumatic regulating valve 24 is communicated with a Y-shaped tee 13, and the second pneumatic regulating valve 24 is matched with the first pneumatic regulating valve 6 to improve the regulation accuracy.

A plurality of steel plates 25 are arranged outside the exhaust pipe 12, waist-shaped grooves are formed in the steel plates 25, and the outside of the exhaust pipe 12 is fixed in position through the waist-shaped grooves in the steel plates 25 and fixing pieces; a red copper pipe 7 is arranged on the first pneumatic regulating valve 6, a cutting sleeve type ball valve 9 is arranged at one end of the red copper pipe 7, the pressure of the high-pressure pipe 3 is regulated through the first pneumatic regulating valve 6, and meanwhile, the dispersed pressure during regulation is subjected to discharge control through the red copper pipe 7 and the cutting sleeve type ball valve 9; one end of the second pipeline 18 is communicated with a filter pipe 19, the filter pipe 19 can intercept and filter substances passing through when the airflow passes through, and a disc cover 26 is arranged outside a drain disc 27.

The utility model discloses a theory of operation is: when the device is used, superheated steam is led out from a boiler low-temperature superheater header through a pressure reduction station, when the pressure is reduced from the medium flow direction, the manual stop valve 1 and the electric stop valve 2 are used for adjusting to cut off and throttle the medium, the first pneumatic regulating valve 6 and the safety valve 28 are used for matching with a load cell for adjustment, when the device is used for adjusting the pressure, an external PLC is used for setting, a 4-20 milliampere signal is sent to a positioner, the 4-20 milliampere signal corresponds to 0-100% of the opening degree of the first pneumatic regulating valve 6, the automatic pressure adjustment is achieved, meanwhile, the first pneumatic regulating valve 6 has the characteristic of high switching speed, when the first pneumatic regulating valve 6 is used, 5-7kg of compressed air is enabled to be rapidly switched on and switched off through the SOR pressure switch 21, and the switching speed can be within 5S.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. Boiler body soot blowing steam source decompression station, its characterized in that includes:

the manual stop valve (1), the output port of the manual stop valve (1) is communicated with an electric stop valve (2) through a connecting pipe, the output port of the electric stop valve (2) is communicated with a high-pressure pipe (3), one end of the high-pressure pipe (3) is communicated with a first pneumatic regulating valve (6), one end of the first pneumatic regulating valve (6) is communicated with a first pipeline (8), and one end of the first pipeline (8) is communicated with a second pipeline (18) through a three-way pipe (10);

first nonrust steel pipe (15) and second nonrust steel pipe (17) communicate in proper order the outside of second pipeline (18), first nonrust steel pipe (15) with all install stop valve (20) and return bend (16) for the instrument on nonrust steel pipe (17) of second, pressure transmitter (14) are installed to the one end of first nonrust steel pipe (15), the one end intercommunication of second nonrust steel pipe (17) has equal diameter tee bend (22), SOR pressure switch (21) and manometer (23) are installed in proper order to two delivery outlets of equal diameter tee bend (22).

2. The boiler body sootblowing steam source pressure reduction station of claim 1, wherein: the top output port of the three-way pipe (10) is communicated with a safety valve (28), the output port of the safety valve (28) is communicated with a hydrophobic disc (27), and the top of the hydrophobic disc (27) is communicated with an exhaust pipe (12).

3. The boiler body sootblowing steam source pressure reduction station of claim 1, wherein: t-shaped plates (11) are mounted outside the high-pressure pipe (3), the first pipeline (8) and the second pipeline (18), and the bottoms of the T-shaped plates (11) are mounted on the support frame (5) through the connecting seats (4).

4. The boiler body sootblowing steam source pressure reduction station of claim 2, wherein: one end of the top of the exhaust pipe (12) is communicated with a second pneumatic regulating valve (24), and an output port of the second pneumatic regulating valve (24) is communicated with a Y-shaped tee joint (13).

5. The boiler body sootblowing steam source pressure reduction station of claim 2, wherein: a plurality of steel plates (25) are mounted outside the exhaust pipe (12), and waist-shaped grooves are formed in the steel plates (25).

6. The boiler body sootblowing steam source pressure reduction station of claim 1, wherein: a copper tube (7) is installed on the first pneumatic regulating valve (6), and a cutting sleeve type ball valve (9) is installed at one end of the copper tube (7).

7. The boiler body sootblowing steam source pressure reduction station of claim 1, wherein: one end of the second pipeline (18) is communicated with a filter pipe (19).

8. The boiler body soot blowing steam source pressure reduction station as set forth in claim 2, wherein: and a disc cover (26) is arranged outside the hydrophobic disc (27).