1. The utility model provides a thermal power plant is with heating device that has overheat protection function, includes the main part, its characterized in that: one side of main part is provided with the determine module, one side pipe connection of determine module has the accuse temperature subassembly, the accuse temperature subassembly sets up the inside in the main part, the outside of accuse temperature subassembly is provided with explosion-proof assembly, explosion-proof assembly sets up the inside in the main part.

2. The heating apparatus with overheat protection function for thermal power plant according to claim 1, wherein: the detection assembly comprises a detection shell (21), the detection shell (21) is fixedly connected to one side of the main body, the upside sliding connection of the detection shell (21) is provided with a pressing plate (210), the inner bearing of the detection shell (21) is connected with a rotating shell (26), the outer side of the rotating shell (26) is uniformly provided with a stirring rod (27), the inner fixedly connected with impeller (22) of the rotating shell (26) is uniformly provided with a groove, the inner sliding connection of the groove is provided with a sliding ball (23), the outer side of the sliding ball (23) is provided with a tightening film (25), the upside pipeline of the rotating shell (26) is connected with an extrusion cylinder, the inner sliding connection of the extrusion cylinder is provided with two pistons (28) and two pistons (28), and one side of the pistons (28) is fixedly connected with a smashing knife (29).

3. The heating apparatus with overheat protection function for thermal power plant according to claim 2, wherein: accuse temperature subassembly is including preheating shell (31), the inside of preheating shell (31) is provided with cooling tube, cooling tube's one end pipe connection has temperature valve (33), one side pipe connection of temperature valve (33) has water source (32), cooling tube's other end pipe connection has negative pressure source (312), the inside of temperature valve (33) is provided with warp bag (34), the inside of warp bag (34) is provided with inflation ball (35), the inside fixedly connected with solid portion (36) of inflation ball (35).

4. The heating apparatus with overheat protection function for thermal power plant according to claim 3, wherein: a conical cavity (24) is arranged in the impeller (22), and a pipeline at the upper end of the conical cavity (24) is connected to the deformation bag (34).

5. The heating apparatus with overheat protection function for thermal power plant according to claim 4, wherein: the cooling device is characterized in that two sides of the cooling pipeline are internally and respectively connected with a overheating pipeline through bearings, one end of each overheating pipeline is provided with a sprinkler head (310), the interior of each overheating pipeline is elastically connected with two stop plates (39), the outer side of each overheating pipeline is provided with a rotating motor (38), one end of each rotating motor (38) is electrically connected with a power supply, one end of each power supply is electrically connected with a deformation metal (311), one end of each deformation metal (311) is fixed inside a preheating shell (31), the outer side of each deformation metal (311) is sleeved with a guide sleeve, and the guide sleeves are fixed on the preheating shell (31).

6. The heating apparatus with overheat protection function for thermal power plant according to claim 5, wherein: the outside of preheating shell (31) is provided with explosion-proof shell (41), the inside of explosion-proof shell (41) evenly is provided with storage portion (42), the one end fixedly connected with limiting plate (43) of storage portion (42), the inside of storage portion (42) is provided with gasbag (44).

7. The heating apparatus with overheat protection function for thermal power plant according to claim 6, wherein: the inside of gasbag (44) is provided with sodium azide, preheat the outside pipe connection of shell (31) and have ventilated membrane (45), the outside of gasbag (44) is provided with the bleeder vent.

8. The heating apparatus with overheat protection function for thermal power plant according to claim 7, wherein: the sliding ball (23) is made of high-density material.

9. The heating apparatus with overheat protection function for thermal power plant according to claim 8, wherein: the deformation bag (34) is made of elastic materials.

10. The heating apparatus with overheat protection function for thermal power plant according to claim 9, wherein: the two stop plates (39) are matched.

Background

Large thermal power plants burn pulverized coal for improving coal burning efficiency. The ignition point of the coal powder airflow is higher than that of the lump coal, the ignition point is higher as the coal powder is finer and higher, and in order to ensure that the coal powder can be immediately ignited after being sprayed for a distance, the coal powder and air need to be preheated, the preheating temperature of the coal powder is in inverse proportion to the granularity of the coal powder, the ratio of the preheating temperature to the granularity of the coal powder is the preheating degree, the preheating degree is ensured to be within a normal range, the coal powder can be ignited after being sprayed for a distance, and experiments show that the coal powder with smaller granularity is more difficult to stir under certain pressure.

Most of the existing preheating technologies utilize hot flue gas generated by combustion to heat coal powder and air, so that on one hand, the temperature of the air entering a boiler is increased, the coal powder is easy to catch fire and combust, and on the other hand, the temperature of exhaust smoke can be reduced.

The preheating temperature of the pulverized coal in the existing preheating technology is not limited by a good means, and after the preheating degree exceeds the standard, the pulverized coal can be sprayed out and then starts to burn, so that the service life of a conveying fan can be seriously influenced to be reduced, the conveying fan can be blocked, and dust explosion can be caused when the preheating degree is too high.

Therefore, it is necessary to design a heating apparatus having an overheat protection function for a thermal power plant which has an overheat protection function and can precisely control the degree of preheating.

Disclosure of Invention

The present invention is directed to a heating apparatus with overheat protection function for thermal power plants, so as to solve the problems in the background art.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a thermal power plant is with heating device that has overheat protection function, includes the main part, its characterized in that: one side of main part is provided with the determine module, one side pipe connection of determine module has the accuse temperature subassembly, the accuse temperature subassembly sets up the inside in the main part, the outside of accuse temperature subassembly is provided with explosion-proof assembly, explosion-proof assembly sets up the inside in the main part.

According to the technical scheme, the detection assembly comprises a detection shell, the detection shell is fixedly connected to one side of the main body, the upside sliding connection of the detection shell is provided with a pressing plate, the inner bearing of the detection shell is connected with a rotation shell, the outer side of the rotation shell is evenly provided with a stirring rod, the inner fixedly connected with impeller of the rotation shell is evenly provided with a groove, the inner sliding connection of the groove is provided with a sliding ball, the outer side of the sliding ball is provided with a tightening film, the upside pipeline of the rotation shell is connected with an extrusion cylinder, the inner sliding connection of the extrusion cylinder is provided with two pistons, two, one side of each piston is fixedly connected with a crushing knife.

According to the above technical scheme, the accuse temperature subassembly is including preheating the shell, the inside of preheating the shell is provided with cooling tube, cooling tube's one end pipe connection has the temperature valve, one side pipe connection of temperature valve has the water source, cooling tube's other end pipe connection has the negative pressure source, the inside of temperature valve is provided with the deformation bag, the inside of deformation bag is provided with the inflation ball, the inside fixedly connected with solid portion of inflation ball.

According to the technical scheme, the impeller is internally provided with a conical cavity, and an upper end pipeline of the conical cavity is connected to the deformation bag.

According to the technical scheme, the two sides of the cooling pipeline are respectively connected with a overheating pipeline through bearings, one end of each overheating pipeline is provided with a sprinkler head, the interior of each overheating pipeline is elastically connected with two stop plates, the outer side of each overheating pipeline is provided with a rotating motor, one end of each rotating motor is electrically connected with a power supply, one end of each power supply is electrically connected with a deformation metal, one end of each deformation metal is fixed inside the preheating shell, the outer side of each deformation metal is sleeved with a guide sleeve, and the guide sleeves are fixed on the preheating shell.

According to the technical scheme, the outer side of the preheating shell is provided with the explosion-proof shell, the storage part is uniformly arranged inside the explosion-proof shell, one end of the storage part is fixedly connected with the limiting plate, and the air bag is arranged inside the storage part.

According to the technical scheme, sodium azide is arranged in the air bag, a breathable film is connected to the outer side pipeline of the preheating shell, and air holes are formed in the outer side of the air bag.

According to the technical scheme, the sliding ball is made of a high-density material.

According to the technical scheme, the deformation bag is made of elastic materials.

According to the technical scheme, the two stop plates are matched.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the detection assembly is arranged, so that the device can judge the granularity of the pulverized coal, the pulverized coal is cut when the granularity of the pulverized coal is too large, the temperature control assembly is arranged, the preheating degree of the pulverized coal can be controlled by the device to be always within a certain range, the pulverized coal can be better combusted, the service life of the device is ensured, the explosion-proof assembly is arranged, the device can provide one layer of protection for the preheating shell, and the outside boiler can not be affected even if a dangerous condition occurs in the preheating shell.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the detection assembly of the present invention;

FIG. 2 is a schematic view of the temperature control assembly of the present invention;

FIG. 3 is a schematic view of the explosion-proof assembly of the present invention;

FIG. 4 is a schematic view of the structure of the detection shell of the present invention;

in the figure: 21. detecting the shell; 22. an impeller; 23. a sliding ball; 24. a conical cavity; 25. shrinking the film; 26. rotating the shell; 27. a stirring rod; 28. a piston; 29. a crushing knife; 210. pressing a plate; 31. preheating the shell; 32. a water source; 33. a temperature valve; 34. a deformation bladder; 35. an expansion ball; 36. a solid portion; 38. rotating the motor; 39. a cut-off plate; 310. a sprinkler head; 311. deforming the metal; 312. a source of negative pressure; 41. an explosion-proof shell; 42. a storage section; 43. a limiting plate; 44. an air bag; 45. and (3) a breathable film.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a thermal power plant is with heating device that has overheat protection function, includes the main part, its characterized in that: a detection assembly is arranged on one side of the main body, a temperature control assembly is connected to a pipeline on one side of the detection assembly and arranged inside the main body, an explosion-proof assembly is arranged on the outer side of the temperature control assembly and arranged inside the main body; through being provided with detecting element, make the device can judge the granularity of buggy, and when the granularity of buggy is too big, cut the buggy, through being provided with accuse temperature subassembly, make the degree of preheating that the device can control the buggy be in the certain limit all the time, guarantee the burning that the buggy can be better and guaranteed the life of device, through being provided with explosion-proof subassembly, make the device can do the one deck protection for preheating the shell more, make the outside boiler that the inside dangerous situation of preheating the shell also can not reach.

The detection assembly comprises a detection shell 21, the detection shell 21 is fixedly connected to one side of the main body, a pressing plate is connected to the upper side of the detection shell 21 in a sliding mode, a rotating shell 26 is connected to an inner bearing of the detection shell 21, stirring rods 27 are uniformly arranged on the outer side of the rotating shell 26, an impeller 22 is fixedly connected to the inner side of the rotating shell 26, grooves are uniformly formed in the outer side of the impeller 22, a sliding ball 23 is connected to the inner side of each groove in a sliding mode, a tightening film 25 is arranged on the outer side of the sliding ball 23, an extrusion cylinder is connected to the upper side of the rotating shell 26 in a pipeline mode, two pistons 28 are connected to the inner side of the extrusion cylinder in a sliding mode, and a crushing knife 29 is fixedly connected to one side of each piston 28; the rotating shell starts to rotate under the action of the outer constant-power torque, quantitative coal powder is introduced into the detection shell, a certain pressure is applied to the coal powder by the pressure plate through gravity, the coal powder is under a certain pressure, the stirring rod is driven to rotate by the rotating shell, the coal is soft in texture and quantitative in quantity, experiments show that when the coal powder is small, the middle gap is small, the resistance on the stirring rod is large, when the coal powder is large, the middle gap is large, the resistance on the stirring rod is small, the rotating speed of the rotating shell driven by the constant-power torque is different from that when the coal powder is large, friction force exists between the sliding ball and the groove, the rotating shell drives the impeller to rotate, the rotating speed of the impeller is different, the centrifugal force on the sliding ball is different, and when the centrifugal force of the sliding ball is larger than the friction force, the sliding ball is thrown out, the membrane expansion is tightened in the drive outside, it squeezes outside liquid into the extrusion jar this moment to tighten the membrane, drive two pistons of extrusion jar inside and expand outward, it moves outward to drive crushing sword on the piston this moment, cut the buggy and smash, can realize through above-mentioned step, when centrifugal force is less than the frictional force that the sliding ball received, judge that the size of fine coal is up to standard, when centrifugal force is greater than the frictional force that the sliding ball received, judge that the buggy at this moment is too big, push out crushing sword through the extrusion jar, smash great buggy.

The temperature control assembly comprises a preheating shell 31, a cooling pipeline is arranged inside the preheating shell 31, one end of the cooling pipeline is connected with a temperature valve 33 through a pipeline, one side of the temperature valve 33 is connected with a water source 32 through a pipeline, the other end of the cooling pipeline is connected with a negative pressure source 312 through a pipeline, a deformation bag 34 is arranged inside the temperature valve 33, an expansion ball 35 is arranged inside the deformation bag 34, and a solid part 36 is fixedly connected inside the expansion ball 35; the negative pressure source always generates negative pressure suction to suck water from the cooling pipeline, when the temperature is lower than a certain value, the expansion degree of the expansion ball in the temperature valve is smaller, at the moment, under the action of the solid part, the buoyancy borne by the whole expansion ball is smaller than the gravity, so that the expansion ball sinks, the temperature valve is closed, when the temperature is higher than or equal to the preset temperature, the expansion ball expands to a certain degree, so that the buoyancy borne by the expansion ball is larger than the gravity borne by the expansion ball, so that the buoyancy borne by the whole expansion ball is larger than the gravity borne by the expansion ball, at the moment, the temperature valve is opened, the water in the water source enters the cooling pipeline through the temperature valve, the steps can be realized, when the temperature is lower than the preheating temperature, the device does not act, when the temperature is higher than the preheating temperature, the device opens the cooling pipeline, so that the coal powder in the preheating shell is prevented from being further heated, and the heated water can be led into the boiler to utilize the heat in the flue gas.

A conical cavity 24 is arranged in the impeller 22, and the upper end pipeline of the conical cavity 24 is connected to the deformation bag 34; in the rotating process of the impeller, liquid in the inner conical cavity is thrown out under the action of centrifugal force, the amount of the liquid thrown out from the inner part of the conical cavity indicates the rotating speed of the impeller, and the rotating speed of the impeller is related to the granularity of the pulverized coal, so that the liquid thrown out from the inner part of the conical cavity can represent the granularity of the pulverized coal, the density of the solution in the conical cavity is higher than that of the liquid in the deformation bag, when the amount of the liquid thrown out is less, the granularity of the pulverized coal is smaller, the amount of the liquid thrown out is less, the density of the solution in the deformation bag is increased, the expansion ball needs to expand to a larger extent to open the temperature valve, the preheating temperature of the pulverized coal is increased, when the amount of the liquid thrown out is more, the granularity of the pulverized coal is smaller, the density of the solution in the deformation bag is increased, the expansion ball only needs to expand to a smaller extent to open the temperature valve, through the steps, the signal of the granularity of the coal powder can be transmitted to the temperature valve, and the opening temperature of the temperature valve is controlled, so that the preheating degree of the coal powder is always maintained in a preset range.

The inner parts of two sides of the cooling pipeline are respectively connected with a superheating pipeline in a bearing mode, one end of each superheating pipeline is provided with a sprinkler head 310, the inner part of each superheating pipeline is elastically connected with two stop plates 39, the outer side of each superheating pipeline is provided with a rotating motor 38, one end of each rotating motor 38 is electrically connected with a power supply, one end of each power supply is electrically connected with a deformation metal 311, one end of each deformation metal 311 is fixed inside the preheating shell 31, the outer side of each deformation metal 311 is sleeved with a guide sleeve, and the guide sleeves are fixed on the preheating shell 31; in the process of heating the preheating shell, if the temperature of the coal dust in the preheating shell is still continuously increased after reaching the preheating temperature, deformed metal expansion can be caused, under the limitation of the guide sleeve, the deformed metal only deforms towards the direction close to the deformed metal on the other side, when the temperature exceeds the limited temperature, the deformed metal expands to cause the deformed metal on the two sides to contact, in order to ensure the stability of the preheating shell, the power supply can start the rotating motor to drive the overheating pipeline to rotate, the cutoff plate can be thrown out by centrifugal force in the rotating process of the overheating pipeline, then the heat pipeline is conducted, the internal liquid enters the overheating pipeline from the cooling pipeline and is sprayed out from the sprinkler head in a rotating way, so that the liquid in the preheating shell is quickly cooled, when the interior of the preheating shell is overheated, the preheating shell is rapidly cooled, so that the preheating shell has an overheating protection function.

An explosion-proof shell 41 is arranged on the outer side of the preheating shell 31, a storage part 42 is uniformly arranged in the explosion-proof shell 41, one end of the storage part 42 is fixedly connected with a limiting plate 43, and an air bag 44 is arranged in the storage part 42; when the overheat protection function of preheating the shell became invalid, preheat the shell and took place the dust explosion under the condition that lasts to heat up, the violent impact that the inside gasbag of storage portion received this moment, lead to inside to produce gas rapidly, and then lead to the gasbag inflation, the limiting plate is spacing to the gasbag, avoid the gasbag only to expand to a direction, the impact force is too big, secondary damage has been caused to preheating the shell, the gasbag that evenly sets up on every side can guarantee the impact that direction received, the gasbag inflation of that direction, an impact force for eliminating the explosion back and preheating the shell production, can realize through above-mentioned step, add one deck explosion-proof protection to preheating the shell more, after preheating the shell explosion, prevent the influence diffusion that the explosion brought through explosion-proof shell.

Sodium azide is arranged inside the air bag 44, the outer pipeline of the preheating shell 31 is connected with a breathable film 45, and the outer side of the air bag 44 is provided with air holes; sodium azide receives the impact and will decompose production nitrogen gas and sodium rapidly under the molten condition, and the nitrogen gas of production can make the gasbag expand rapidly, and nitrogen gas can pass through the bleeder vent promptly the ventilated membrane gets into and preheats the shell inside, makes to preheat the shell inside and is full of nitrogen gas, avoids producing the possibility of secondary explosion.

The sliding ball 23 is made of high-density material; after the sliding ball is thrown out, the integral rotational inertia of the rotating shell is increased, the farther the sliding ball is thrown out, the larger the rotational inertia is, the lower the rotating speed is, and the problem that the rotating speed of the rotating shell is too large due to too large pulverized coal granularity, so that the service life of the crushing cutter is influenced due to too large load of the crushing cutter is avoided.

The deformation bag 34 is made of elastic material; the deformation balloon can be deformed under the action of the expansion ball.

The two stop plates 39 are matched; when the stop plates are close to each other, the overheating pipeline can be stopped, so that liquid cannot leak from the overheating pipeline.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.