CN217714894U

CN217714894U - Low-pressure high-temperature steam superheater

Info

Publication number: CN217714894U
Application number: CN202221992859.1U
Authority: CN
Inventors: 孟凡斌; 孟祥玉
Original assignee: Shandong Yuyuan Group Co ltd
Current assignee: Shandong Yuyuan Group Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-11-01
Anticipated expiration: 2032-08-01

Abstract

The utility model discloses a low pressure high temperature steam over heater relates to over heater technical field, including shell, coiled pipe, heat insulation cover and dead lever, heat insulation cover is installed in the outside of shell, and has seted up the cavity in the inside one side of heat insulation cover, the coiled pipe is all installed at the inside both ends of shell, and the coiled pipe is close to the top and the bottom of cavity one side and all is connected with the straight tube, the shell is close to the intermediate position department of cavity one side and installs pneumatic strike hammer, and the intermediate position department of the inside both sides of shell all is provided with the dead lever. This low pressure high temperature steam over heater is through being provided with the switching-over valve, even make steam can follow the both ends of coiled pipe in turn and get into the coiled pipe respectively, make things convenient for two steam generator alternate use, avoid steam generator overload operation, influence overheated effect, and make the change in turn of coiled pipe steam direction of motion, even make coiled pipe temperature everywhere comparatively balanced, avoid the intertube big temperature difference of appearance angle, take place the pipeline accident that bursts.

Description

Low-pressure high-temperature steam superheater

Technical Field

The utility model relates to a over heater technical field especially relates to a low pressure high temperature steam over heater.

Background

The superheater is a part for further heating steam from saturation temperature to superheat temperature in the boiler, and is also called a steam superheater, after saturated steam is heated into superheated steam, the work capacity of the steam in the steam turbine is improved, namely the useful enthalpy of the steam in the steam turbine is increased, so that the cycle efficiency of the heat engine is improved, and the superheater can be divided into a convection type, a radiation type and a semi-radiation type according to a heat transfer mode; according to the structural characteristics, the device can be divided into a serpentine tube type, a screen type, a wall type and a wall-wrapping type.

After boiler operation a period, can deposit a lot of deposition on the over heater to along with boiler equipment's continuous operation, the phenomenon of slagging scorification coking more or less can all appear in the over heater, all can be equipped with the soot blower when present over heater uses and just blow the ash removal, but a lot of soot blowers only can have certain effect to the deposition of dry and loose, nevertheless to slagging scorification coking deposition just tie the hand in vain, can't realize effectively blowing the ash work, cause the over heater coking condition more and more serious, influence over heater normal work.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a low-pressure high-temperature steam superheater, which solves the problems that a plurality of soot blowers provided in the background art only can have a certain effect on dry and loose accumulated ash, but the problems that slagging, coking and accumulated ash are completely bound, effective soot blowing work cannot be realized, the coking condition of the superheater is more and more serious, the normal work of the superheater is influenced, and the like.

The utility model discloses a can realize through following technical scheme:

the utility model provides a low-pressure high-temperature steam superheater, includes shell, coiled pipe, separates temperature cover and dead lever, separate the temperature cover is installed in the outside of shell, and separates the inside one side of temperature cover and seted up the cavity, the coiled pipe is all installed at the inside both ends of shell, and the top and the bottom that the coiled pipe is close to cavity one side all are connected with the straight tube, the shell is close to the intermediate position department of cavity one side and installs pneumatic striking hammer, and the intermediate position department of the inside both sides of shell all is provided with the dead lever, the shell inside wall all evenly is provided with the second link, and all installs reset spring on the second link, the dead lever is close to one side of shell inner wall and all evenly installs first link, and reset spring all is connected with first link, the cutting ferrule is all installed to the position department that the dead lever both ends are close to the coiled pipe, and all is connected with the coiled pipe, the inside position department that is close to the straight tube of cutting ferrule all installs the bellows, and the bellows all is connected with the straight tube connection, the position department that the temperature cover is close to the bellows all runs through sealed stopcock, and all is provided with the connecting pipe, and the top of being provided with the main pipe and the connecting pipe is provided with the top of being provided with the connecting pipe, the top of being provided with the connecting pipe.

Further setting as follows: the coiled pipes are arranged in parallel, and the distances between the coiled pipes and the inner walls of the two ends of the shell are equal everywhere.

Further setting the following steps: the inner wall of the heat insulation sleeve is attached to the outer wall of the shell, and the heat insulation sleeve and the shell form a detachable connection design through bolts.

Further setting as follows: the dead lever all constitutes detachable connection design through cutting ferrule and coiled pipe, and the dead lever all constitutes elastic buffer structure through reset spring and shell.

Further setting the following steps: the cutting ferrule is designed into a three-fifths circular ring, and the inner diameter of the cutting ferrule is matched with the outer diameter of the coiled pipe.

Further setting the following steps: the bellows all with straight tube threaded connection, and the bellows all with sealed stopcock joint.

To sum up, the utility model discloses a beneficial technological effect does:

(1) The device is through being provided with the dead lever, the cutting ferrule at dead lever both ends can carry out spacing fixed to the coiled pipe, the dead lever passes through reset spring and casing constitution springiness cushioning structure, pneumatic striking hammer work during the use, strike the coiled pipe, the deposition that can make the coiled pipe surface slagging scorification coking is not hard up or drops and makes things convenient for the soot blower to blow the ash and remove dust, springiness cushioning structural design makes the coiled pipe difficult because of strikeing impaired, and strike the back coiled pipe and can be left and right sides swing under reset spring effect, make the deposition shaken off, the deashing effect is better, need not pause boiler equipment during the deashing, and is more convenient to use.

(2) The device is through being provided with the switching-over valve, even make steam can be followed the both ends of coiled pipe respectively and get into the coiled pipe in turn, make things convenient for two steam generator alternate use, avoid steam generator overload operation, influence overheated effect, and make the change in turn of coiled pipe steam direction of motion, even make coiled pipe temperature everywhere comparatively balanced, avoid the intertube to appear the big temperature difference in angle, take place the pipeline accident of bursting.

Drawings

FIG. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic side view of the fixing rod of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 1 according to the present invention.

Reference numerals: 1. a housing; 2. a serpentine tube; 201. a straight pipe; 3. a thermal insulation sleeve; 4. a return spring; 5. an electromagnetic valve; 6. a cavity; 7. a pneumatic knocking hammer; 8. a reversing valve; 9. fixing the rod; 10. a main tube; 11. an air inlet pipe; 12. sealing the pipe plug; 13. a first suspension loop; 14. a ferrule; 15. a second suspension loop; 16. a bellows; 17. a connecting pipe; 18. and (4) exhausting the gas.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-4, for the utility model discloses a low pressure high temperature steam superheater, including shell 1, coiled pipe 2, thermal insulation sleeve 3 and dead lever 9, thermal insulation sleeve 3 is installed in the outside of shell 1, and cavity 6 has been seted up to one side of thermal insulation sleeve 3 inside, coiled pipe 2 is all installed at the both ends of shell 1 inside, and coiled pipe 2 is close to the top and the bottom of cavity 6 one side and all is connected with straight tube 201, shell 1 is close to the intermediate position department of cavity 6 one side and installs pneumatic striking hammer 7, and the intermediate position department of shell 1 inside both sides all is provided with dead lever 9, shell 1 inside wall all evenly is provided with second link 15, and all installs reset spring 4 on second link 15, one side that dead lever 9 is close to shell 1 inner wall all evenly installs first link 13, and reset spring 4 all is connected with first link 13, and all install cutting ferrule 14 at the position department that the dead lever 9 both ends are close to coiled pipe 2, and all install cutting ferrule 14 with coiled pipe 2, and all be connected with coiled pipe 2, the position department of cavity 6 inside is all installed with straight tube 201 all installs bellows 16, and all install bellows 16 in the sealed 12 on the top of the bellows 12, and the sealed connection pipe 10, and the sealed 12 of the sealed connection pipe 10, and the sealed connection pipe 10 between the sealed connection pipe 10 of the top of the host pipe 10, and the sealed connection pipe 10 of the host pipe 10, the host pipe, the sealed connection pipe 10 is all installed far away from the top of the host pipe, the sealed connection pipe, the bellows 1;

the coiled pipes 2 are arranged in parallel, the distances between the coiled pipes 2 and the inner walls of the two ends of the shell 1 are equal, and the parallel and equal-distance design ensures that the heat exchange between the coiled pipes 2 and high-temperature flue gas is more stable, the local overheating condition of the coiled pipes 2 is avoided, and the heat exchange effect is better;

the inner wall of the heat insulation sleeve 3 is attached to the outer wall of the shell 1, the heat insulation sleeve 3 and the shell 1 form a detachable connection design through bolts, the shell 1 can be wrapped by the heat insulation sleeve 3, a large amount of energy loss caused by large amount of heat leakage is avoided, smoke is guaranteed not to leak, and the design is more reasonable;

the fixed rods 9 and the coiled pipes 2 form a detachable connection design through the clamping sleeves 14, the fixed rods 9 and the shell 1 form an elastic buffer structure through the reset springs 4, the coiled pipes 2 can be conveniently disassembled and assembled through the detachable connection design, the repair and maintenance of the coiled pipes are convenient, the coiled pipes 2 are not easily damaged due to knocking through the elastic buffer structure design, and the coiled pipes 2 can swing left and right under the action of the reset springs 4 after knocking, so that accumulated dust is shaken off;

the cutting sleeve 14 is designed into a three-fifths circular ring, the inner diameter of the cutting sleeve 14 is matched with the outer diameter of the coiled pipe 2, and the cutting sleeve 14 is designed to enable the coiled pipe 2 and the fixing rod 9 to be assembled more conveniently and to be used more conveniently;

bellows 16 all with straight tube 201 threaded connection, and bellows 16 all with sealed stopcock 12 joint, when coiled pipe 2 rocks about being hit, bellows 16 can extend thereupon and contract, avoids steam to reveal, designs more rationally.

The utility model discloses a theory of operation and beneficial effect do: when the boiler is used, a power supply is connected, boiler smoke enters the shell 1 from a smoke inlet of the shell 1, the two air inlet pipes 11 are connected with steam generators, the two steam generators work alternately, the two electromagnetic valves 5 are opened and closed alternately along with the work of the steam generators, for example, saturated steam enters the main pipe 10 from the bottom air inlet pipe 11, then enters the bottom corrugated pipe 16 through the bottom connecting pipe 17, then enters the coiled pipe 2 from the bottom straight pipe 201 of the coiled pipe 2, the saturated steam exchanges heat with high-temperature smoke, is heated to be superheated steam, returns to the main pipe 10 through the top connecting pipe 17, enters the exhaust pipe 18 through the reversing valve 8, is conveyed to a required position through the exhaust pipe 18, the reversing valve 8 reverses once at intervals, even if the flow direction of the steam in the coiled pipe 2 changes, the two electromagnetic valves 5 are opened and closed alternately according to the flow direction of the steam, after the boiler works for a period of time, the pneumatic knocking hammer 7 works to knock the coiled pipe 2, the deposited ash of the surface of the coiled pipe 2 can be loosened or fall off, dust can be conveniently removed by the coiled pipe, the elastic buffer structure design, the coiled pipe is not easy to knock, and the coiled pipe can be damaged, and the spring can be reset to enable the coiled pipe to swing under the action of shaking and the left and the ash blowing effect of the coiled pipe 2 to be realized.

Above, only be the specific implementation of the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a low pressure high temperature steam over heater, includes shell (1), coiled pipe (2), separates temperature cover (3) and dead lever (9), its characterized in that: the outer side of the shell (1) is provided with a temperature insulation sleeve (3), one side of the inner part of the temperature insulation sleeve (3) is provided with a cavity (6), two ends of the inner part of the shell (1) are provided with coiled pipes (2), the top ends and the bottom ends of the side, close to the cavity (6), of the coiled pipes (2) are connected with straight pipes (201), the middle position, close to one side of the cavity (6), of the shell (1) is provided with a pneumatic knocking hammer (7), the middle position, close to the two sides of the inner part of the shell (1), of the shell (1) is provided with a fixing rod (9), the inner side wall of the shell (1) is uniformly provided with second hanging rings (15), the second hanging rings (15) are provided with reset springs (4), one side, close to the inner wall of the shell (1), of the fixing rod (9) is provided with first hanging rings (13) uniformly, the reset springs (4) are connected with the first hanging rings (13), the positions, two ends of the fixing rod (9), close to the coiled pipes (2), are provided with clamping sleeves (14), the clamping sleeves (14) are connected with corrugated pipes (16), the positions of the inner part of the cavity (6) are provided with corrugated pipe plug (16), and the corrugated pipe (201) are connected with corrugated pipe (16), and bellows (16) all are connected with sealed stopcock (12), same horizontal position all be linked together through connecting pipe (17) between sealed stopcock (12), and install between connecting pipe (17) and be responsible for (10), be responsible for (10) and keep away from intermediate position department of shell (1) one side and install blast pipe (18), and be responsible for (10) and the junction of blast pipe (18) and be provided with switching-over valve (8), it all is provided with intake pipe (11) to be responsible for top and the bottom of keeping away from shell (1) one side of (10), and all is provided with solenoid valve (5) on intake pipe (11).

2. A low pressure high temperature steam superheater as set forth in claim 1, wherein: the coiled pipes (2) are arranged in parallel, and the distances between the coiled pipes (2) and the inner walls of the two ends of the shell (1) are equal everywhere.

3. A low pressure high temperature steam superheater as set forth in claim 1, wherein: the inner wall of the heat insulation sleeve (3) is attached to the outer wall of the shell (1), and the heat insulation sleeve (3) and the shell (1) form a detachable connection design through bolts.

4. A low pressure high temperature steam superheater as set forth in claim 1, wherein: the fixing rods (9) are detachably connected with the coiled pipes (2) through clamping sleeves (14), and the fixing rods (9) are elastic buffering structures formed with the shell (1) through reset springs (4).

5. A low pressure high temperature steam superheater as set forth in claim 1, wherein: the clamping sleeves (14) are all designed into three-fifths of circular rings, and the inner diameters of the clamping sleeves (14) are matched with the outer diameter of the coiled pipe (2).

6. A low pressure high temperature steam superheater as set forth in claim 1, wherein: bellows (16) all with straight tube (201) threaded connection, and bellows (16) all with sealed stopcock (12) joint.