CN214501210U

CN214501210U - Oil-free pulverized coal ceramic igniter

Info

Publication number: CN214501210U
Application number: CN202120578723.5U
Authority: CN
Inventors: 薛武
Original assignee: Individual
Current assignee: Jilin Juneng Network Control Technology Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-10-26
Anticipated expiration: 2031-03-22

Abstract

The utility model provides an oil-free pulverized coal ceramic igniter, which comprises a cracking chamber 10 and a combustion chamber 20, wherein one end of the cracking chamber 10 is provided with a fuel inlet 30, the other end of the cracking chamber 10 is communicated with one end of the combustion chamber 20, and the other end of the combustion chamber 20 is provided with a flame outlet 40; a blunt body 50 is arranged at the communication part of the cracking chamber 10 and the combustion chamber 20; a plurality of heating assemblies 101 are axially arranged in the cracking chamber 10 at intervals; the heating assembly 101 comprises an outer shell 1011 made of wear-resistant and high-temperature-resistant ceramic material, wherein the inside of the outer shell 1011 is filled with an induction material 1012; the utility model discloses have high temperature resistant, anti-oxidant effectual, the longer beneficial effect of life is applicable to the combustion apparatus field.

Description

Oil-free pulverized coal ceramic igniter

Technical Field

The utility model relates to a combustion apparatus's technical field, concretely relates to oil-free buggy ceramic point firearm.

Background

Coal has long occupied an important proportion in the primary energy production and consumption structure of China, so that the safe and efficient utilization of coal is particularly important. At present, most pulverized coal boilers adopt oil feeding for combustion supporting so as to achieve the effect of stable combustion at low load, the cost is very high, and the utilization rate of resources is also low. And the metal layer is adopted as the heat storage layer in the traditional pulverized coal igniter, and although the high-temperature metal can meet the requirement of heat conduction, the high-temperature metal has the advantages of high manufacturing cost, short antioxidant validity period, short service life and easy damage, thereby causing safety accidents.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists in the correlation technique, the utility model discloses the technical problem that will solve lies in: provides an oil-free coal powder ceramic igniter with high temperature resistance, good oxidation resistance effect and long service life.

In order to solve the technical problem, the utility model discloses a technical scheme does: an oil-free pulverized coal ceramic igniter comprises a cracking chamber and a combustion chamber, wherein one end of the cracking chamber is provided with a fuel inlet, the other end of the cracking chamber is communicated with one end of the combustion chamber, and the other end of the combustion chamber is provided with a flame outlet; a bluff body is arranged at the communication position of the cracking chamber and the combustion chamber; a plurality of heating components are axially arranged in the cracking chamber at intervals; the heating assembly comprises a shell made of wear-resistant and high-temperature-resistant ceramic materials, and induction materials are filled in the shell.

Preferably, the inner walls of the cracking chamber and the combustion chamber are heat storage layers; an induction heating layer and a sealing layer are sequentially arranged on the outer wall of the heat storage layer from inside to outside; an induction coil is wound outside the sealing layer.

Preferably, the induction material is communicated with the induction heating layer; the top of the shell is provided with an opening; the open end of the shell is attached to the induction heating layer, and the bottom of the shell penetrates through the heat storage layer and then extends into the cracking chamber.

Preferably, temperature measuring components are arranged on the cracking chamber and the combustion chamber; and the measuring end of the temperature measuring component is connected with the heat storage layer.

Preferably, a heat insulation layer is arranged between the sealing layer and the induction coil.

Preferably, one end of the heat storage layer close to the fuel inlet extends outwards to form a first extension part; one end of the heat storage layer close to the flame outlet extends outwards to form a second extension part.

Preferably, the first extension and the second extension are each externally provided with a fixing assembly.

Preferably, the fixing assembly comprises a first press ring, a second press ring, a third press ring, a fourth press ring and at least two pull rods; the first pressing ring and the second pressing ring are respectively attached to the inner side of the first extension part and the inner side of the second extension part; the third pressing ring and the fourth pressing ring are respectively attached to the outer side of the first extension part and the outer side of the second extension part; one end of the pull rod penetrates through the first pressing ring, the first extending part and the third pressing ring in sequence and then extends to the outside of the igniter; the other end of the pull rod penetrates through the second pressing ring, the second extending part and the fourth pressing ring in sequence and then extends to the outside of the igniter; the pull rod is fixedly connected with the first pressing ring, the second pressing ring, the third pressing ring and the fourth pressing ring through flanges.

Preferably, the inductive material is a high temperature resistant alloy material.

Preferably, the blunt body is a semicircular blunt body.

The utility model has the advantages of:

1. one end of the cracking chamber is provided with a fuel inlet, the other end of the cracking chamber is communicated with one end of the combustion chamber, and the other end of the combustion chamber is provided with a flame outlet; a bluff body is arranged at the communication position of the cracking chamber and the combustion chamber; a plurality of heating components are axially arranged in the cracking chamber at intervals; the heating assembly comprises a shell made of wear-resistant and high-temperature-resistant ceramic materials, and induction materials are filled in the shell.

The inductive material filled in the shell enables the heating assembly to be heated up rapidly, so that the fuel and the heating assembly can exchange heat sufficiently, and the cracking time of the fuel is shortened. The shell is made of wear-resistant and high-temperature-resistant ceramic materials, the shell isolates the sensing materials from air in the cracking chamber, the sensing materials are prevented from being oxidized and losing efficacy, and the service life is long.

When the device is used, fuel enters the cracking chamber from the fuel inlet, volatile components in the coal powder are fully separated out after cracking to become combustible gas, when the combustible gas passes through the bluff body, a backflow zone can be formed behind the bluff body, and the fuel is violently combusted in the combustion chamber by high-temperature smoke in the backflow zone.

2. In the invention, the inner walls of the cracking chamber and the combustion chamber are heat storage layers; an induction heating layer and a sealing layer are sequentially arranged on the outer wall of the heat storage layer from inside to outside; an induction coil is wound outside the sealing layer.

The induction heating layer is positioned between the heat storage layer and the sealing layer, so that the induction heating layer is isolated from air, and the service life of the induction heating layer is longer. The sealing layer can also play the effect on protection induction heating layer, and after induction heating layer became invalid, the sealing layer can guarantee that induction heating layer can not take place to leak, avoids taking place the incident and causes danger. The effects of low energy consumption and resource saving can be achieved.

3. In the invention, the induction material is communicated with the induction heating layer; the top of the shell is provided with an opening; the open end of the shell is attached to the induction heating layer, and the bottom of the shell penetrates through the heat storage layer and then extends into the cracking chamber.

The inductive material is linked together with the induction heating layer, and the open end and the induction heating layer of shell laminate mutually, and the top of casing is provided with the opening, makes the inside inductive material of casing and induction heating layer paste tightly mutually, and the bottom of shell runs through stretch into behind the heat accumulation layer the inside of schizolysis room makes the intensification effect better.

4. In the invention, temperature measuring components are arranged on the cracking chamber and the combustion chamber; and the measuring end of the temperature measuring component is connected with the heat storage layer.

The temperature measuring component is adopted to directly measure the temperature of the heat storage layer, and when the temperature reaches 800 ℃, fuel is introduced.

5. In the invention, a heat insulation layer is arranged between the sealing layer and the induction coil.

The heat preservation can play the thermal-insulated effect of heat preservation to the igniter is whole.

6. One end of the heat storage layer close to the fuel inlet extends outwards to form a first extension part; one end of the heat storage layer close to the flame outlet extends outwards to form a second extension part.

The first extension and the second extension are configured to facilitate connection of the igniter to other devices.

7. In the invention, the outer parts of the first extension part and the second extension part are both provided with fixing components.

The fixed component can protect the igniter by protecting the first extension part and the second extension part, so that the igniter is not easy to break, the service life is prolonged, and safety accidents are avoided.

8. One end of the pull rod in the fixing assembly penetrates through the first pressing ring, the first extending part and the third pressing ring in sequence and then extends to the outside of the igniter; the other end of the pull rod penetrates through the second pressing ring, the second extending part and the fourth pressing ring in sequence and then extends to the outside of the igniter; the pull rod is fixedly connected with the first pressing ring, the second pressing ring, the third pressing ring and the fourth pressing ring through flanges.

Stretch first extension and second extension through fixed subassembly, make pull rod, first clamping ring, second clamping ring, third clamping ring and fourth clamping ring department atress, avoided heat accumulation layer, first tensile portion and the tensile portion of second carry out the atress, because heat accumulation layer, first tensile portion and the tensile portion of second are easy cracked material, consequently adopt fixed subassembly to make some firearm more firm, difficult emergence fracture, service life has been increased, the incident of having avoided causing.

9. The induction material is a high-temperature-resistant alloy material. The cracking chamber can be heated up rapidly.

10. The blunt body is a semicircular blunt body. The backflow zone formed by the semicircular bluff body can better enable fuel to be intensively combusted in the combustion chamber.

Drawings

FIG. 1 is a schematic structural diagram of an oil-free pulverized coal ceramic igniter provided by the present invention;

fig. 2 is a schematic structural diagram of a heating assembly provided by the present invention;

fig. 3 is a schematic view of the heating assembly provided by the present invention in the direction B;

FIG. 4 is a schematic view of the arrangement of the part A of the oil-free pulverized coal ceramic igniter provided by the present invention;

in the figure: 10 is the pyrolysis chamber, 20 is the combustion chamber, 30 is the fuel import, 40 is the flame export, 50 is the blunt body, 60 is the heat accumulation layer, 70 is the induction heating layer, 80 is the sealing layer, 90 is induction coil, 100 is temperature measurement subassembly, 110 is the heat preservation, 120 is first clamping ring, 130 is the second clamping ring, 140 is the third clamping ring, 150 is the fourth clamping ring, 160 is the pull rod, 101 is the heating element, 601 is the first extension, 602 is the second extension, 1011 is the shell, 1012 is the response material.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An embodiment of the oil-free pulverized coal ceramic igniter is described in detail below with reference to the accompanying drawings.

Example one

Fig. 1 is a schematic structural diagram of an oil-free pulverized coal ceramic igniter provided by the present invention, as shown in fig. 1, the present embodiment provides an oil-free pulverized coal ceramic igniter, which includes a cracking chamber 10 and a combustion chamber 20, wherein one end of the cracking chamber 10 is provided with a fuel inlet 30, the other end of the cracking chamber 10 is communicated with one end of the combustion chamber 20, and the other end of the combustion chamber 20 is provided with a flame outlet 40;

a blunt body 50 is arranged at the communication part of the cracking chamber 10 and the combustion chamber 20;

a plurality of heating assemblies 101 are axially arranged in the cracking chamber 10 at intervals;

fig. 2 is a schematic structural diagram of a heating assembly provided by the present invention, fig. 3 is a schematic B-direction diagram of a heating assembly provided by the present invention, as shown in fig. 2 and 3, the heating assembly 101 includes a housing 1011 made of wear-resistant and high-temperature-resistant ceramic material, and the inside of the housing 1011 is filled with an inductive material 1012.

Specifically, each of the heating assemblies 101 is disposed at 120 ° away from the fuel inlet 30.

Specifically, the number of the heating assemblies 101 is 18, and the heating assemblies are divided into 3 groups of 6.

More specifically, each group of inner heating elements is uniformly distributed inside the pyrolysis chamber 10. The three groups of heating components are axially arranged in parallel at intervals.

The arrangement of the heating assembly enables airflow of the air-coal mixture to carry out irregular turbulent motion, so that the pulverized coal can be cracked quickly and sufficiently, and the pulverized coal can be cracked and gasified sufficiently to form combustible gas.

Fig. 4 is a schematic view of a portion a of the oil-free pulverized coal ceramic igniter provided in the present invention, as shown in fig. 4, further, the inner walls of the cracking chamber 10 and the combustion chamber 20 are both heat storage layers 60; the outer wall of the heat storage layer 60 is sequentially provided with an induction heating layer 70 and a sealing layer 80 from inside to outside; an induction coil 90 is wound around the outside of the sealing layer 80.

Specifically, the heat storage layer 60 is made of a ceramic material with high temperature resistance, oxidation resistance and thermal shock resistance.

The direct preparation of the heat storage layer by adopting high-temperature metal is avoided, and although the high-temperature metal can meet the requirement of heat conduction, the high-temperature metal has the advantages of high manufacturing cost, short oxidation resistance effective period, short service life, easiness in damage and safety accident occurrence. The heat storage layer prepared by adopting the ceramic material with high temperature resistance, oxidation resistance and thermal shock resistance has the advantages of low cost, prolonged service life and greatly increased safety performance.

Further, the induction material 1012 is communicated with the induction heating layer 70; an opening is formed in the top of the outer shell 1011; the open end of the outer shell 1011 is attached to the induction heating layer 70, and the bottom of the outer shell 1011 penetrates through the heat storage layer 60 and then extends into the cracking chamber 10.

The layer that generates heat is linked together with the response to the response material, and the top and the response of shell generate heat the layer and laminate mutually, and the top of casing is provided with the opening, makes the inside response material of casing and the layer that generates heat of response paste tightly mutually, and the bottom of shell runs through stretch into behind the heat accumulation layer the inside of schizolysis room makes the intensification effect better.

Furthermore, temperature measuring components 100 are arranged on the cracking chamber 10 and the combustion chamber;

the measuring end of the temperature measuring component 100 is connected with the heat storage layer 60.

Further, one end of the heat storage layer 60 near the fuel inlet 30 extends outwards to form a first extension 601;

one end of the heat storage layer 60 near the flame outlet 40 extends outward to form a second extension 602.

Further, a fixing assembly is disposed outside each of the first extension 601 and the second extension 602.

Further, the fixing assembly includes a first pressing ring 120, a second pressing ring 130, a third pressing ring 140, a fourth pressing ring 150, and at least two tie rods 160;

the first pressing ring 120 and the second pressing ring 130 are respectively attached to the inner side of the first extension part 601 and the inner side of the second extension part 602;

the third pressing ring 140 and the fourth pressing ring 150 are respectively attached to the outer side of the first extension part 601 and the outer side of the second extension part 602;

one end of the pull rod 160 sequentially penetrates through the first press ring 120, the first extension part 601 and the third press ring 140 and then extends to the outside of the igniter;

the other end of the pull rod 160 sequentially penetrates through the second press ring 130, the second extension part 602 and the fourth press ring 150 and then extends to the outside of the igniter;

the pull rod 160 is fixedly connected with the first press ring 120, the second press ring 130, the third press ring 140 and the fourth press ring 150 through flanges.

Stretch first extension and second extension through fixed subassembly, make the pull rod, first clamping ring, the second clamping ring, third clamping ring and fourth clamping ring department atress, avoided heat accumulation layer, first tensile portion and the tensile portion of second carry out the atress, because heat accumulation layer, the material of first tensile portion and the tensile portion of second is ceramic material, easy fracture, consequently adopt fixed subassembly to make some firearm more firm, difficult emergence fracture, service life has been increased, the incident of having avoided causing.

Further, the inductive material 1012 is a high temperature resistant alloy material.

The induction material is a high-temperature-resistant alloy material. The cracking chamber can be heated up rapidly.

Specifically, the sensing material 1012 is pre-treated for oxidation resistance.

The induction material is subjected to pre-oxidation resistance treatment, so that the service life can be effectively prolonged.

Example two

Compared with the first embodiment, the difference of the present embodiment is: an insulating layer 110 is disposed between the sealing layer 80 and the induction coil 90.

EXAMPLE III

Compared with the first embodiment, the difference of the present embodiment is: the blunt body 50 is a semicircular blunt body.

The backflow zone formed by the semicircular bluff body can better enable fuel to be intensively combusted in the combustion chamber.

The working principle is as follows:

the induction coil quickly heats induction materials in the induction heating layer and the heating assembly through medium-frequency induction, the temperatures of the induction heating layer and the heating assembly are quickly heated to be more than 800 ℃ from normal temperature, the induction heating layer conducts heat to the heat storage layer in an express way, the temperature of the outer wall of the heat storage layer of the cracking chamber is measured through the temperature measuring assembly, when the temperature of the outer wall of the heat storage layer of the cracking chamber reaches 800 ℃, a wind-coal mixture is introduced into the cracking chamber through a fuel inlet, the wind-coal mixture is fully contacted with the heat storage layer and the shell of the heating assembly, so that coal powder is subjected to cracking reaction, meanwhile, the heating assembly enables airflow of the wind-coal mixture to perform irregular turbulent motion, the coal powder can be quickly and fully cracked and gasified, and combustible gas is formed; when the combustible gas passes through the bluff body, a backflow zone can be formed behind the bluff body, the high-temperature smoke in the backflow zone enables the fuel to be violently combusted in the combustion chamber, and flame is formed through the flame outlet, so that the effect of igniting the pulverized coal is achieved. The coal powder is violently combusted in the combustion chamber to generate a large amount of heat, and the heat is transmitted back to the heat storage layer of the cracking chamber through the heat storage layer of the combustion chamber, so that the heat storage layer and the heating assembly keep a certain high temperature, the subsequent coal powder is continuously cracked and combusted to form a heating cycle, and the medium-frequency induction heating is stopped after the cycle balance.

The heating cycle can achieve the effects of low energy consumption and resource saving.

In the description of the present invention, it is to be understood that the terms "top", "bottom", "inner", "outer", "axial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It will be appreciated that the relevant features of the method, apparatus and system described above are referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An oil-free pulverized coal ceramic igniter, which comprises a cracking chamber (10) and a combustion chamber (20), and is characterized in that: one end of the cracking chamber (10) is provided with a fuel inlet (30), the other end of the cracking chamber (10) is communicated with one end of the combustion chamber (20), and the other end of the combustion chamber (20) is provided with a flame outlet (40);

a blunt body (50) is arranged at the communication part of the cracking chamber (10) and the combustion chamber (20);

a plurality of heating assemblies (101) are axially arranged in the cracking chamber (10) at intervals;

the heating assembly (101) comprises an outer shell (1011) made of a wear-resistant, high-temperature-resistant ceramic material, and the interior of the outer shell (1011) is filled with an inductive material (1012).

2. An oil-free pulverized coal ceramic igniter as claimed in claim 1, wherein: the inner walls of the cracking chamber (10) and the combustion chamber (20) are heat storage layers (60); an induction heating layer (70) and a sealing layer (80) are sequentially arranged on the outer wall of the heat storage layer (60) from inside to outside; an induction coil (90) is wound around the outside of the sealing layer (80).

3. An oil-free pulverized coal ceramic igniter as claimed in claim 2, wherein: the induction material (1012) is communicated with the induction heating layer (70);

the top of the shell (1011) is provided with an opening; the open end of the outer shell (1011) is attached to the induction heating layer (70), and the bottom of the outer shell (1011) penetrates through the heat storage layer (60) and then extends into the cracking chamber (10).

4. An oil-free pulverized coal ceramic igniter as claimed in claim 2, wherein: temperature measuring components (100) are arranged on the cracking chamber (10) and the combustion chamber;

and the measuring end of the temperature measuring component (100) is connected with the heat storage layer (60).

5. An oil-free pulverized coal ceramic igniter as claimed in claim 2, wherein: an insulating layer (110) is arranged between the sealing layer (80) and the induction coil (90).

6. An oil-free pulverized coal ceramic igniter as claimed in claim 2, wherein:

one end of the heat accumulation layer (60) close to the fuel inlet (30) extends outwards to form a first extension part (601);

one end of the heat storage layer (60) close to the flame outlet (40) extends outwards to form a second extension part (602).

7. An oil-free pulverized coal ceramic igniter as claimed in claim 6, wherein:

the first extension part (601) and the second extension part (602) are provided with fixing components at the outer parts.

8. An oil-free pulverized coal ceramic igniter as claimed in claim 7, wherein:

the fixing assembly comprises a first pressing ring (120), a second pressing ring (130), a third pressing ring (140), a fourth pressing ring (150) and at least two pull rods (160);

the first pressing ring (120) and the second pressing ring (130) are respectively attached to the inner side of the first extension part (601) and the inner side of the second extension part (602);

the third pressing ring (140) and the fourth pressing ring (150) are respectively attached to the outer side of the first extension part (601) and the outer side of the second extension part (602);

one end of the pull rod (160) penetrates through the first pressing ring (120), the first extending part (601) and the third pressing ring (140) in sequence and then extends to the outside of the igniter;

the other end of the pull rod (160) penetrates through the second pressing ring (130), the second extending part (602) and the fourth pressing ring (150) in sequence and then extends to the outside of the igniter;

the pull rod (160) is fixedly connected with the first pressing ring (120), the second pressing ring (130), the third pressing ring (140) and the fourth pressing ring (150) through flanges.

9. An oil-free pulverized coal ceramic igniter as claimed in claim 1, wherein: the inductive material (1012) is a high temperature resistant alloy material.

10. An oil-free pulverized coal ceramic igniter as claimed in claim 1, wherein: the bluff body (50) is a semicircular bluff body.