CN211902910U

CN211902910U - Automatic control system for temperature of hearth

Info

Publication number: CN211902910U
Application number: CN202020424552.6U
Authority: CN
Inventors: 潘兵; 朱正荣; 黄赣闽; 刘海荣; 郑遂军; 石健水
Original assignee: SHANGHAI CHENGTOU YINGZHOU DOMESTIC GARBAGE DISPOSAL CO Ltd
Current assignee: SHANGHAI CHENGTOU YINGZHOU DOMESTIC GARBAGE DISPOSAL CO Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-10
Anticipated expiration: 2030-03-27

Abstract

The utility model relates to a furnace temperature automatic control system, including furnace shell and flue gas pipeline, control system includes the water-cooled tube module, the water-cooled tube module is a plurality of, a plurality of water-cooled tube modules are along a week evenly distributed of furnace shell inner wall and form the water-cooled wall, the water-cooled wall is the multilayer and is close to each other, the tip intercommunication of the wherein one end of water-cooled tube module has the inlet tube, the intercommunication has first electromagnetism water valve on the inlet tube, the tip intercommunication of the other end of water-cooled tube module has the outlet pipe, the intercommunication has second electromagnetism water valve on the outlet pipe, be provided with the thermocouple sensor who is used for measuring furnace internal temperature on the furnace shell outer wall, the outside of furnace shell is provided with and is used for showing and controls first electromagnetism water valve, the control box of second. The utility model discloses have and to carry out grouping control with the water-cooling wall to water flow in the control water-cooling wall that can be quick accurate, and then can effective control furnace's temperature, make the more stable effect of burning in the furnace.

Description

Automatic control system for temperature of hearth

Technical Field

The utility model belongs to the technical field of the msw incineration technique and specifically relates to a furnace temperature automatic control system is related to.

Background

The waste incineration power generation is the work of introducing waste incineration plants and waste incineration equipment, digesting, absorbing and re-creating. In actual operation, combustion stability is more sensitive to changes in boiler load and coal quality. When the load of the boiler is reduced or the quality of coal is deteriorated, the overall temperature of a hearth is reduced quickly, unstable combustion is easily caused, even flameout is caused, and meanwhile, the combustible substances in fly ash are increased, and the efficiency of the boiler is reduced.

Chinese patent No. CN203687087U discloses a movable heat shield structure capable of adjusting the temperature of a furnace. The device comprises an outer layer fixed heat insulation plate, a middle layer heat insulation plate, an inner layer heat insulation plate, a middle layer fixed guide groove, an inner layer fixed guide groove, left side fixed support steel, a left side angle steel fixing part, a right side angle steel fixing part, right side fixed support steel, a push-pull rod and a roller. The flue gas temperature at the outlet of the hearth can be effectively adjusted by changing the heat insulation area of the heat insulation plate, so that low-temperature corrosion caused by low heat efficiency and low temperature of the boiler due to overhigh temperature can be prevented.

The above prior art solutions have the following drawbacks: when the heat shield plate is overlapped and folded, the water-cooled wall of the part can be covered, so that the water-cooled wall covered by the part can not be absorbed by heat, the control of the temperature of the hearth is influenced, and the stability of combustion is further influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exist, one of the purposes of the utility model is to provide a furnace temperature automatic control system carries out grouping control with the water-cooling wall, control water-cooling wall normal water flow that can be effectively quick, and then can effective control furnace's temperature for it is more stable to burn in the furnace.

The above object of the present invention can be achieved by the following technical solutions:

the automatic hearth temperature control system comprises a furnace shell and a flue gas pipeline communicated with the furnace shell, wherein the control system comprises a water-cooling pipe module abutted to the inner wall of the furnace shell, the water-cooling pipe module is formed by welding a plurality of steel water pipes end to end and communicated with each other, the water-cooling pipe modules are multiple and are uniformly distributed along the circumference of the inner wall of the furnace shell to form a water-cooling wall, the water-cooling wall is multilayer and close to each other, the end part of one end of the water-cooling pipe module is communicated with a water inlet pipe, the water inlet pipe is communicated with a first electromagnetic water valve, the end part of the other end of the water-cooling pipe module is communicated with a water outlet pipe, the water outlet pipe is communicated with a second electromagnetic water valve, a thermocouple sensor used for measuring the temperature in a hearth is arranged on the outer wall of the furnace shell, and a first electromagnetic water valve used for displaying and controlling, The second electromagnetic water valve and a control box of the thermocouple sensor.

Through adopting above-mentioned technical scheme, when thermocouple sensor detects the stability in the furnace too high or cross when low, the control box can control the electromagnetism water valve and come control to get into or the discharge of the discharge water cooling pipe module, because the water cooling pipe module divides each part of cloth in furnace, and then can adjust the temperature of each position in the furnace through each water cooling pipe module of independent control, and then be favorable to improving the stability of burning in the furnace chamber.

The present invention may be further configured in a preferred embodiment as: the water inlet pipe and the water outlet pipe in the two adjacent water-cooled pipe modules are close to each other.

Through adopting above-mentioned technical scheme, because the temperature of outlet pipe one side is higher than the stability of inlet tube one side, and is close to inlet tube and outlet pipe in two adjacent water-cooled tube modules each other, can utilize adjacent inlet tube to reduce the temperature of outlet pipe one side, and then can make up the stability difference of the different positions of water-cooled tube module.

The present invention may be further configured in a preferred embodiment as: the thermocouple sensors are multiple and uniformly distributed on the furnace shell.

Through adopting above-mentioned technical scheme, distribute a plurality of thermocouple sensors respectively in each position in furnace, can be to the temperature of different positions in the real-time supervision furnace, and then be favorable to carrying out water flow control to the water-cooled tube module in each position.

The present invention may be further configured in a preferred embodiment as: the utility model discloses a furnace shell, including the furnace shell, the furnace shell is provided with the top opening of furnace shell and is provided with sealed lid, be provided with in the furnace shell and be used for the installation mechanism of water-cooling wall, installation mechanism including weld in the support ring of water-cooling tube module bottom, the bottom surface welding of support ring has the arc connecting strip, the arc connecting strip is three and follows the a week evenly distributed of support ring, the welding has the arc fixed strip on the inner wall of furnace shell, the arc fixed strip is three and follows the a week evenly distributed of furnace shell inner wall, the arc fixed strip is kept away from the arc wall has been seted up to a side of furnace shell inner wall, the arc connecting strip is located in the arc wall, the lower surface butt of support ring.

By adopting the technical scheme, when the water-cooled wall is installed, the water-cooled tube module is welded on the upper surface of the support ring, then the support ring is hung downwards to the arc-shaped fixing strip, and then the support ring is rotated, so that the arc-shaped connecting strip on the support ring is inserted into the arc-shaped groove, and the support ring can be supported and fixed; and when the water-cooled tube module needs to be maintained, the arc-shaped connecting strip is moved out of the arc-shaped groove, and then the supporting ring is lifted upwards, so that the water-cooled tube module can be moved out of the hearth for maintenance, and the maintenance of operators is facilitated.

The present invention may be further configured in a preferred embodiment as: the bottom surface of the arc-shaped groove is provided with a clamping groove, the bottom surface of the arc-shaped connecting strip is welded with a clamping block, and the clamping block is in clearance fit with the clamping groove.

Through adopting above-mentioned technical scheme, utilize the cooperation of draw-in groove and fixture block, can carry out the joint to the arc connecting strip, be favorable to reducing the possibility that the arc connecting strip breaks away from the arc wall.

The present invention may be further configured in a preferred embodiment as: the clamping groove is a T-shaped groove.

Through adopting above-mentioned technical scheme, set up the draw-in groove into the T-slot, can hinder the fixture block and break away from the draw-in groove, further guarantee the stability of arc connecting strip.

The present invention may be further configured in a preferred embodiment as: the end part of one end of the arc-shaped groove is provided with a notch, and the notch faces the support ring.

Through adopting above-mentioned technical scheme, when needs insert the arc connecting strip in the arc wall, can be earlier through the opening with the arc connecting strip as for on the bottom surface of arc wall, rotate the support ring again to can play the guide effect, the installation of being convenient for.

The present invention may be further configured in a preferred embodiment as: the sum of the arc lengths of the three arc-shaped fixing strips is less than one half of the circumference of the support ring, and the arc length of the arc-shaped connecting strip is less than that of the arc-shaped fixing strip.

Through adopting above-mentioned technical scheme, when arranging the arc connecting strip in between two adjacent arc fixed strips, can avoid two adjacent arc fixed strips to cause the interference to the arc connecting strip, be favorable to guaranteeing the smooth installation of water-cooled tube module.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by arranging the plurality of water-cooled tube modules, when the thermocouple sensor detects that the stability in the hearth is too high or too low, the control box can control the electromagnetic water valve to control the water flow entering or flowing out of the water-cooled tube modules, and because the water-cooled tube modules are distributed on all parts in the hearth, the temperature of all positions in the hearth can be adjusted by independently controlling all the water-cooled tube modules, so that the improvement of the combustion stability in the hearth is facilitated;

2. by arranging the mounting mechanism, when the water-cooled wall is mounted, the water-cooled tube module is welded on the upper surface of the support ring, then the support ring is hung to the arc-shaped fixing strip, and then the support ring is rotated, so that the arc-shaped connecting strip on the support ring is inserted into the arc-shaped groove, and the support ring can be supported and fixed; when the water-cooled tube module needs to be maintained, the arc-shaped connecting strip is moved out of the arc-shaped groove, and then the support ring is lifted upwards, so that the water-cooled tube module can be moved out of the hearth for maintenance, and the maintenance of operators is facilitated;

3. through setting up draw-in groove and fixture block, utilize the cooperation of draw-in groove and fixture block, can carry out the joint to the arc connecting strip, be favorable to reducing the possibility that the arc connecting strip breaks away from the arc wall.

Drawings

FIG. 1 mainly illustrates the overall construction of a furnace casing;

FIG. 2 is a schematic sectional view of a portion of the structure of FIG. 1, illustrating primarily the construction of the control system;

FIG. 3 is a schematic view of the construction of the mounting mechanism of FIG. 2.

In the figure, 1, a furnace shell; 11. a sealing cover; 2. a flue gas duct; 301. a water cooled wall; 31. a water-cooled tube module; 311. a steel water pipe; 32. a water inlet pipe; 33. a first electromagnetic water valve; 34. a water outlet pipe; 35. a second electromagnetic water valve; 36. a thermocouple sensor; 37. a control box; 4. an installation mechanism; 41. a support ring; 42. an arc-shaped connecting strip; 421. a clamping block; 43. an arc-shaped fixing strip; 431. an arc-shaped slot; 4311. a card slot; 4312. and (6) opening.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for utility model discloses a furnace temperature automatic control system, including furnace casing 1 and the flue gas pipeline 2 that communicates with furnace casing 1, furnace casing 1 is the cylinder, and flue gas pipeline 2 is located furnace casing 1 global and is close to the top of furnace casing 1, and the open-top of furnace casing 1 and be provided with sealed lid 11. A control system for controlling the temperature of the hearth is arranged in the furnace chamber in the furnace shell 1.

As shown in fig. 1 and 2, the control system includes a water-cooled tube module 31, a water inlet tube 32, a first electromagnetic water valve 33, a water outlet tube 34, a second electromagnetic water valve 35, a thermocouple sensor 36, and a control box 37. The water-cooling tube module 31 is formed by welding a plurality of steel water pipes 311 end to end, each steel water pipe 311 is parallel to each other and is arranged into the arc form, and the length direction of steel water pipe 311 is unanimous with the length direction of furnace casing 1, in addition, the water-cooling tube module 31 is a plurality of, a plurality of water-cooling tube modules 31 are along a week evenly distributed of furnace casing 1 inner wall and form water-cooling wall 301, two adjacent water-cooling tube modules 31 in water-cooling wall 301 are close to each other, water-cooling wall 301 is the multilayer and along furnace casing 1's direction of height evenly distributed, and be close to each other between the water-cooling wall 301, utilize water-cooling wall 301 can cover the inner wall of furnace casing 1. One end of the water inlet pipe 32 and one end of the water-cooling pipe module 31 are connected through threads and communicated with each other, one end of the water inlet pipe 32, which is far away from the water-cooling pipe module 31, penetrates through the furnace shell 1 and is positioned outside the furnace shell 1, and the water inlet pipe 32 is used for conveying cold water into the water-cooling pipe module 31. The first electromagnetic water valve 33 is installed on the water inlet pipe 32, the first electromagnetic water valve 33 is located outside the furnace casing 1, and a control signal of the first electromagnetic water valve 33 is connected with the control box 37. The other end of the water outlet pipe 34 and the water cooling pipe module 31 are in threaded connection and communicated with each other, one end of the water outlet pipe 34 far away from the water cooling module penetrates through the furnace shell 1 and is located outside the furnace shell 1, and the water outlet pipe 34 is used for conveying water in the water cooling pipe module 31 out. The second electromagnetic water valve 35 is installed on the water outlet pipe 34, the second electromagnetic water valve 35 is located outside the oven housing 1, and a control signal of the second electromagnetic water valve 35 is connected with the control box 37. Thermocouple sensor 36 is installed on the outer wall of furnace shell 1, and thermocouple sensor 36 is a plurality of and evenly distributed on the outer wall of furnace shell 1, and thermocouple sensor 36 is used for measuring the temperature in the furnace, and thermocouple sensor 36's control signal is connected with control box 37. A control box 37 is located outside the furnace casing 1, the control box 37 being used to display and control the signals of the first solenoid valve, the second solenoid valve and the thermocouple sensor 36.

When thermocouple sensor 36 detects that the stability in the furnace is too high or low, control box 37 can control the switching of electromagnetic water valve and control the discharge that gets into or flow out water-cooled tube module 31, because water-cooled tube module 31 distributes in each position in furnace, and then can adjust the temperature of every position in the furnace through each water-cooled tube module 31 of independent control, and then be favorable to improving the stability of burning in the furnace.

As shown in fig. 2 and 3, a mounting mechanism 4 for mounting the water wall 301 is arranged in the furnace shell 1, and the mounting mechanism 4 comprises a support ring 41, an arc-shaped connecting strip 42 and an arc-shaped fixing strip 43. The support ring 41 is annular, the outer diameter of the support ring 41 is smaller than the inner diameter of the furnace casing 1, and the width of the support ring 41 is larger than the diameter of the steel water pipe 311. Arc-shaped connecting strip 42 is arc-shaped, and the upper surface of arc-shaped connecting strip 42 welds on the lower surface of support ring 41, and arc-shaped connecting strip 42 is three, and three arc-shaped connecting strip 42 has a fixture block 421 along a week evenly distributed of support ring 41, and arc-shaped connecting strip 42 is kept away from the welding on the one side of support ring 41, and fixture block 421 is the T-shaped piece, and fixture block 421 is close to the tip of arc-shaped connecting strip 42 wherein one end. The arc fixing strips 43 are arc-shaped, the outer arc surfaces of the arc fixing strips 43 are welded on the inner wall of the furnace shell 1, three arc fixing strips 43 are arranged, the three arc fixing strips 43 are positioned on the same horizontal plane and are uniformly distributed along one circle of the furnace shell 1, the sum of the arc lengths of the three arc fixing strips 43 is less than one half of the circumference length of the support ring 41, the arc of the arc connecting strip 42 is less than the arc length of the arc fixing strip 43, in addition, an arc groove 431 is arranged on one side surface of the arc fixing strips 43 away from the inner part of the furnace shell 1, the arc groove 431 penetrates through two ends of the arc fixing strips 43, a clamping groove 4311 is arranged on the bottom surface of the arc groove 431, the clamping groove 4311 is a T-shaped groove and is positioned at one end away from the arc connecting strip 42, the clamping groove 4311 is in clearance fit with the clamping block, the groove width of the arc groove 431 is greater than the sum of, the opening 4312 is positioned at one side of the arc-shaped groove 431 close to the support ring 41, and the opening 4312 is communicated with the arc-shaped groove 431.

When the water-cooled wall 301 is installed, the water-cooled tube module 31 is welded on the upper surface of the support ring 41, then the support ring 41 is hung downwards to the arc-shaped fixing strip 43, so that the arc-shaped connecting strip 42 abuts against the bottom surface of the arc-shaped groove 431 through the notch 4312, then the support ring 41 is rotated, so that the arc-shaped connecting strip 42 on the support ring 41 is inserted into the arc-shaped groove 431, the support ring 41 is continuously rotated, and the fixture block 421 on the arc-shaped connecting strip 42 is clamped into the fixture groove 4311 of the arc-shaped groove 431, so that the support ring 41 can be supported and fixed; and when the water-cooled tube module 31 needs to be maintained, the arc-shaped connecting strip 42 is moved out of the arc-shaped groove 431, and the support ring 41 is lifted upwards, so that the water-cooled tube module 31 can be moved out of the hearth for maintenance, and the maintenance by an operator is facilitated.

The implementation principle of the embodiment is as follows: when thermocouple sensor 36 detects that the stability in the furnace is too high or low, control box 37 can control the switching of electromagnetic water valve and control the discharge that gets into or flow out water-cooled tube module 31, because water-cooled tube module 31 distributes in each position in furnace, and then can adjust the temperature of every position in the furnace through each water-cooled tube module 31 of independent control, and then be favorable to improving the stability of burning in the furnace.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, 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 furnace temperature automatic control system, including furnace shell (1) and with flue gas pipeline (2) of furnace shell (1) intercommunication, its characterized in that: the control system comprises a water-cooled tube module (31) abutted to the inner wall of the furnace shell (1), the water-cooled tube module (31) is formed by welding a plurality of steel water tubes (311) end to end and communicating with each other, the number of the water-cooled tube modules (31) is multiple, the water-cooled tube modules (31) are uniformly distributed along the circumference of the inner wall of the furnace shell (1) to form a water-cooled wall (301), the water-cooled wall (301) is multilayer and close to each other, the end part of one end of each water-cooled tube module (31) is communicated with a water inlet tube (32), the water inlet tube (32) is communicated with a first electromagnetic water valve (33), the end part of the other end of each water-cooled tube module (31) is communicated with a water outlet tube (34), the water outlet tube (34) is communicated with a second electromagnetic water valve (35), the outer wall of the furnace shell (1) is provided with a thermocouple sensor (, and a control box (37) for displaying and controlling the first electromagnetic water valve (33), the second electromagnetic water valve (35) and the thermocouple sensor (36) is arranged outside the furnace shell (1).

2. The automatic furnace temperature control system according to claim 1, characterized in that: the water inlet pipe (32) and the water outlet pipe (34) in two adjacent water-cooled pipe modules (31) are close to each other.

3. The automatic furnace temperature control system according to claim 1, characterized in that: the thermocouple sensors (36) are distributed on the furnace shell (1) uniformly.

4. The automatic furnace temperature control system according to claim 1, characterized in that: the top opening of the furnace shell (1) is provided with a sealing cover (11), the furnace shell (1) is internally provided with an installation mechanism (4) for installing the water-cooled wall (301), the installation mechanism (4) comprises a support ring (41) welded at the bottom of the water-cooled tube module (31), the bottom surface of the support ring (41) is welded with arc-shaped connecting strips (42), the arc-shaped connecting strips (42) are three and are uniformly distributed along a circle of the support ring (41), the inner wall of the furnace shell (1) is welded with arc-shaped fixing strips (43), the arc-shaped fixing strips (43) are three and are uniformly distributed along a circle of the inner wall of the furnace shell (1), the arc-shaped fixing strips (43) are far away from one side surface of the inner wall of the furnace shell (1) and are provided with arc-shaped grooves (431), and the arc-shaped connecting strips (42) are positioned in, the lower surface of the support ring (41) abuts against the upper surface of the arc-shaped fixing strip (43).

5. The automatic furnace temperature control system according to claim 4, characterized in that: the bottom surface of the arc-shaped groove (431) is provided with a clamping groove (4311), the bottom surface of the arc-shaped connecting strip (42) is welded with a clamping block (421), and the clamping block (421) is in clearance fit with the clamping groove (4311).

6. The automatic furnace temperature control system according to claim 5, characterized in that: the clamping groove (4311) is a T-shaped groove.

7. The automatic furnace temperature control system according to claim 4, characterized in that: the end part of one end of the arc-shaped groove (431) is provided with a notch (4312), and the notch (4312) faces the support ring (41).

8. The automatic furnace temperature control system according to claim 4, characterized in that: the sum of the arc lengths of the three arc-shaped fixing strips (43) is less than one half of the circumference of the support ring (41), and the arc length of the arc-shaped connecting strip (42) is less than that of the arc-shaped fixing strips (43).