Heavy oil pulse valve type burner and control method thereof

Abstract

The invention discloses a heavy oil pulse valve type burner and a control method thereof.The burner comprises a shell provided with an oil inlet channel, an oil storage tank and an atomization cavity which are sequentially arranged from top to bottom, the inner end of the oil inlet channel is connected with the oil storage tank, and the outer end of the oil inlet channel is connected with the atomization cavity; a first channel, a valve rod channel and a second channel which are communicated with one another are sequentially arranged between the oil storage tank and the atomizing cavity, and an atomizing agent hole is formed in the atomizing cavity; the electromagnetic pulse valve is installed on the shell, and a valve rod of the electromagnetic pulse valve stretches out and draws back in the valve rod channel, so that the first channel and the second channel are switched between a communicating state and a separating state; and the nozzle is mounted on the shell, and the nozzle is communicated with the atomization cavity. The heavy oil burner solves the problems that heavy oil in an existing heavy oil burner cannot be atomized, and the heavy oil is sprayed in a linear state, so that the combustion effect is poor.

Description

Technical Field

[0001] The invention relates to a heavy oil pulse valve type burner and a control method thereof, belonging to the technical field of heavy oil burners. Background Art

[0002] Carbon roasting furnace is a furnace used for sintering and calcining carbon materials. Some furnaces use heavy oil burners. Heavy oil is a high-viscosity, high-density fuel oil. The common problems of heavy oil burners during use are: the heavy oil liquid spray causes combustion delay, incomplete combustion leads to the generation of a large amount of carbon black smoke; coking and carbon deposition in the area near the nozzle at high temperature block the solenoid valve nozzle, etc., which not only increases energy consumption but also easily produces pollutants such as carbon black, affecting the stability of production. Therefore, improving the combustion quality of heavy oil has always been a difficult point in combustion technology. Summary of the invention

[0003] Based on the above, the present invention provides a heavy oil pulse valve burner and a control method thereof to overcome the deficiencies of the prior art.

[0004] The technical solution of the present invention is: In a first aspect, the present invention provides a heavy oil pulse valve burner, comprising: The housing comprises an oil inlet passage, an oil storage tank and an atomizing cavity which are sequentially arranged from top to bottom, wherein the inner end of the oil inlet passage is connected to the oil storage tank, a first passage, a valve stem passage and a second passage which are connected are sequentially arranged between the oil storage tank and the atomizing cavity, and an atomizing agent hole is arranged on the atomizing cavity; An electromagnetic pulse valve is mounted on the housing, and a valve stem of the electromagnetic pulse valve is telescopically movable in the valve stem channel, so that the first channel and the second channel are switched between a connected state and a separated state; A nozzle is installed on the shell and is connected to the atomization cavity.

[0005] In one example, the valve stem channel is laterally arranged on the shell; the first channel includes a first vertical portion, a first oblique portion and a first transverse portion connected in sequence, the upper end of the first vertical portion is connected to the bottom of the oil storage tank, and the first transverse portion is connected to the end of the valve stem channel; the second channel includes a second vertical portion, a second oblique portion and a third vertical portion connected in sequence, the upper end of the second vertical portion is connected to the bottom of the valve stem channel, and the lower end of the third vertical portion is connected to the atomization chamber; in the separated state, the valve stem extends into the valve stem channel to separate the first transverse portion and the second vertical portion; in the connected state, the valve stem contracts and leaves the valve stem channel, so that the first transverse portion and the second vertical portion are connected.

[0006] In one example, the diameter of the first transverse portion is smaller than the diameters of the first vertical portion and the first oblique portion; the diameter of the second vertical portion is smaller than the diameters of the second oblique portion and the third vertical portion; and the diameter of the first transverse portion is the same as the diameter of the second vertical portion.

[0007] In one example, the first oblique portion and the second oblique portion are arranged in opposite directions, and the oil inlet channel coincides with the axis of the atomization chamber.

[0008] In one example, a mounting groove is provided on the shell; the outer shell of the electromagnetic pulse valve is installed on the shell, the electromagnetic coil of the electromagnetic pulse valve is installed in the mounting groove, and a sealing ring is provided at the end of the mounting groove close to the valve stem channel.

[0009] In one example, the aperture of the atomization cavity is larger than the aperture of the third vertical portion.

[0010] In one example, the atomizer holes are symmetrically arranged on both sides of the atomization cavity.

[0011] In one example, the nozzle has a reverse tapered pintle orifice.

[0012] In a second aspect, the present invention provides a control method for a heavy oil pulse valve burner, comprising: The heavy oil with a temperature of 80-100°C and a pressure of 3-4MPa is guided into the oil storage tank through the oil inlet channel; The electromagnetic pulse valve is controlled to operate at a pulse frequency of 200-400 times / minute, so that the heavy oil in the oil storage tank is sprayed into the atomizing cavity one by one; Controlling the atomizer to enter the atomization cavity through the atomizer hole, the atomizer is mixed with the heavy oil and atomizes the heavy oil, wherein the atomizer is compressed air of 1000-5000Pa; The atomized heavy oil is sprayed out from the nozzle and burned.

[0013] The beneficial effects of the present invention are as follows: by modifying the existing heavy oil burner, adding an oil storage tank, a first channel, a valve stem channel, a second channel, an atomizing chamber and an electromagnetic pulse valve, the high-pressure heavy oil is subjected to local cavitation by the high-pressure pulse when passing through the valve stem channel from the oil storage tank, so that the heavy oil is accelerated to split, and after entering the atomizing chamber, it is mixed with the atomizer and atomized, and finally the heavy oil is sprayed out in an atomized state, which solves the problem that the heavy oil in the current heavy oil burner cannot be atomized, and the heavy oil is sprayed out in a linear state, resulting in a poor combustion effect. The atomized heavy oil makes the combustion more complete, which not only reduces the energy consumption of the heavy oil, but also can greatly reduce the accumulation of carbon black pollutants at the bottom of the furnace, thereby extending the service life of the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the heavy oil pulse valve burner; Figure 2 This is a side view of a heavy oil pulse valve burner; Figure 3 It is a longitudinal cross-sectional view of a heavy oil pulse valve burner; Figure 4 for Figure 3 An enlarged schematic diagram of the middle oil storage tank, the first channel, the valve stem channel and the second channel; Description of reference numerals: 10 housing; 11 oil inlet, 12 oil inlet channel, 13 oil storage tank, 14 first channel, 15 valve stem channel, 16 second channel, 17 atomizing chamber, 18 atomizing agent hole, 19 mounting groove; 141 first vertical portion, 142 first oblique portion, 143 first transverse portion; 161 second vertical portion, 162 second oblique portion, 163 third vertical portion; 20 electromagnetic pulse valve; 21 electromagnetic coil, 22 sealing ring, 23 valve stem; 30 nozzles; 31 Inverted tapered pinhole. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0016] See also Figures 1 to 4 In this embodiment, a heavy oil pulse valve type burner includes a shell 10, an electromagnetic pulse valve 20 and a nozzle 30.

[0017] The housing 10 has an oil inlet channel 12, an oil storage tank 13 and an atomizing chamber 17 arranged in sequence from top to bottom. The outer end of the oil inlet channel 12 is provided with an oil inlet port 11, and the inner end of the oil inlet channel 12 is connected to the oil storage tank 13. A first channel 14, a valve stem channel 15 and a second channel 16 are arranged in sequence between the oil storage tank 13 and the atomizing chamber 17. An atomizing agent hole 18 is provided on the atomizing chamber 17, and the atomizing agent can be introduced into the atomizing chamber 17 through the atomizing agent hole 18. The electromagnetic pulse valve 20 is installed on the housing 10, and the valve stem 23 of the electromagnetic pulse valve 20 is telescopic in the valve stem channel 15, so that the first channel 14 and the second channel 16 are switched between a connected state and a separated state. In the connected state, the heavy oil in the oil storage tank 13 enters the second channel 16 through the first channel 14 and the valve stem channel 15, and then enters the atomizing chamber 17. The nozzle 30 is mounted on the housing 10 and is communicated with the atomizing cavity 17 so as to spray out the heavy oil in the atomizing cavity 17 for combustion.

[0018] The control method of the above-mentioned heavy oil pulse valve burner is as follows: When the oil is supplied for combustion, firstly, the heavy oil with a temperature of 80-100°C and a pressure of 3-4MPa is guided into the oil storage tank 13 through the oil inlet channel 12; secondly, the electromagnetic pulse valve 20 is controlled by an external pulse controller to operate at a pulse frequency of 200-400 times / minute, so that the heavy oil in the oil storage tank 13 is sprayed into the atomizing cavity 17 one by one, and local cavitation is generated; then, the atomizer is controlled to enter the atomizing cavity 17 through the atomizer hole 18, the atomizer is mixed with the heavy oil and the heavy oil is atomized in the atomizing cavity 17, and the atomizer is 1000-5000Pa of compressed air; finally, the atomized heavy oil is sprayed out from the nozzle 30 for combustion.

[0019] By inputting high-pressure heavy oil into the oil inlet channel 12, the heavy oil is subjected to local cavitation by high-pressure pulses when passing through the valve stem channel 15, so that the heavy oil is accelerated to split, and after entering the atomizing chamber 17, it is mixed with the atomizing agent and atomized, and finally the heavy oil is sprayed out in an atomized state, the combustion effect is good, the combustion is more complete, the energy consumption of heavy oil is reduced, the accumulation of carbon black pollutants at the bottom of the furnace is greatly reduced, and the service life of the furnace is extended.

[0020] In order to improve the cavitation effect, the valve stem channel 15 is transversely opened on the housing 10; the first channel 14 includes a first vertical portion 141, a first oblique portion 142 and a first transverse portion 143 connected in sequence, the upper end of the first vertical portion 141 is connected to the bottom of the oil storage tank 13, and the first transverse portion 143 is connected to the end of the valve stem channel 15; the second channel 16 includes a second vertical portion 161, a second oblique portion 162 and a third vertical portion 163 connected in sequence, the upper end of the second vertical portion 161 is connected to the bottom of the valve stem channel 15, and the lower end of the third vertical portion 163 is connected to the atomization chamber 17; in the separated state, the valve stem 23 extends into the valve stem channel 15 to block the first transverse portion 143 and the second vertical portion 161, and separate the first transverse portion 143 and the second vertical portion 161; in the connected state, the valve stem 23 shrinks and leaves the valve stem channel 15, so that the first transverse portion 143 and the second vertical portion 161 are connected through the valve stem channel 15.

[0021] The heavy oil in the oil storage tank 13 enters the valve stem channel 15 in a horizontal state through the first vertical portion 141, the first oblique portion 142 and the first transverse portion 143, enters the second vertical portion 161 in a vertical state after passing through the valve stem channel 15, and then enters the atomization chamber 17 after passing through the second oblique portion 162 and the third vertical portion 163, so that the valve stem 23 of the electromagnetic pulse valve 20 can quickly open and close the valve stem channel 15 in a transverse motion, ensuring that the pressure of the heavy oil is reduced to below the vapor pressure of the heavy oil after entering the second vertical portion 161, so that the gas in the heavy oil is released to form bubbles, which is convenient for subsequent atomization.

[0022] In order to further improve the cavitation effect, the diameter of the first horizontal portion 143 is smaller than the diameters of the first vertical portion 141 and the first oblique portion 142; the diameter of the second vertical portion 161 is smaller than the diameters of the second oblique portion 162 and the third vertical portion 163; the diameter of the first horizontal portion 143 is the same as the diameter of the second vertical portion 161, and the aperture of the atomization chamber 17 is larger than the aperture of the third vertical portion 163.

[0023] The diameter of the first transverse portion 143 is smaller than that of the first vertical portion 141 and the first oblique portion 142, which can ensure the supply of heavy oil in the oil storage tank 13; after the heavy oil enters the second vertical portion 161, as it passes through the second oblique portion 162 and the third vertical portion 163 with larger diameters, it can extend the time for gas release in the heavy oil to ensure sufficient formation of bubbles, and finally enter the atomization cavity 17 with a larger aperture to improve the mixing effect with the atomizer.

[0024] For the convenience of molding, the first oblique portion 142 and the second oblique portion 162 are arranged to be inclined in opposite directions, and the axis of the oil inlet channel 12 coincides with the axis of the atomization cavity 17 .

[0025] For easy operation, a mounting groove 19 is provided on the shell 10 , the shell of the electromagnetic pulse valve 20 is installed on the shell 10 , the electromagnetic coil 21 of the electromagnetic pulse valve 20 is installed in the mounting groove 19 , and a sealing ring 22 is provided at the end of the mounting groove 19 close to the valve stem channel 15 .

[0026] In order to improve the atomization effect, the atomizer holes 18 are symmetrically opened on both sides of the atomization cavity 17 . During atomization, the atomizer holes 18 are connected to the pipeline to guide the atomizer into the atomization cavity 17 .

[0027] In order to improve the combustion effect, the nozzle 30 has an inverted cone pinhole 31, so that the heavy oil particles are more uniform and continuous, and the contact surface between the heavy oil particles and the air is larger when entering the furnace, ensuring more complete combustion.

[0028] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heavy oil pulse valve burner, characterized in that: include: The housing (10) comprises an oil inlet passage (12), an oil storage tank (13) and an atomizing chamber (17) which are arranged in sequence from top to bottom, wherein the inner end of the oil inlet passage (12) is connected to the oil storage tank (13), a first passage (14), a valve stem passage (15) and a second passage (16) which are connected in sequence are arranged between the oil storage tank (13) and the atomizing chamber (17), and an atomizing agent hole (18) is arranged on the atomizing chamber (17); An electromagnetic pulse valve (20) is mounted on the housing (10), wherein a valve stem (23) of the electromagnetic pulse valve (20) telescopes in the valve stem channel (15), so that the first channel (14) and the second channel (16) are switched between a connected state and a separated state; A nozzle (30) is mounted on the housing (10), and the nozzle (30) is in communication with the atomization cavity (17).

2. The heavy oil pulse valve burner according to claim 1, characterized in that: The valve stem channel (15) is transversely arranged on the housing (10); The first channel (14) comprises a first vertical portion (141), a first oblique portion (142) and a first transverse portion (143) which are connected in sequence, the upper end of the first vertical portion (141) being connected to the bottom of the oil storage tank (13), and the first transverse portion (143) being connected to an end of the valve stem channel (15); The second channel (16) comprises a second vertical portion (161), a second oblique portion (162) and a third vertical portion (163) which are connected in sequence, the upper end of the second vertical portion (161) is connected to the bottom of the valve stem channel (15), and the lower end of the third vertical portion (163) is connected to the atomization chamber (17); In the separated state, the valve stem (23) extends into the valve stem channel (15) to separate the first transverse portion (143) and the second vertical portion (161); in the connected state, the valve stem (23) contracts and leaves the valve stem channel (15), so that the first transverse portion (143) and the second vertical portion (161) are connected.

3. The heavy oil pulse valve burner according to claim 2 is characterized in that: The diameter of the first transverse portion (143) is smaller than the diameters of the first vertical portion (141) and the first oblique portion (142); The diameter of the second vertical portion (161) is smaller than the diameters of the second oblique portion (162) and the third vertical portion (163); The caliber of the first transverse portion (143) is the same as the caliber of the second vertical portion (161).

4. The heavy oil pulse valve burner according to claim 2 is characterized in that: The inclination directions of the first oblique portion (142) and the second oblique portion (162) are arranged to be opposite, and the axis of the oil inlet channel (12) coincides with the axis of the atomization chamber (17).

5. The heavy oil pulse valve burner according to claim 2, characterized in that: The housing (10) is provided with a mounting groove (19); The outer shell of the electromagnetic pulse valve (20) is mounted on the housing (10), the electromagnetic coil (21) of the electromagnetic pulse valve (20) is mounted in the mounting groove (19), and a sealing ring (22) is provided at the end of the mounting groove (19) close to the valve stem channel (15).

6. The heavy oil pulse valve burner according to claim 2, characterized in that: The aperture of the atomization cavity (17) is larger than the aperture of the third vertical portion (163).

7. The heavy oil pulse valve burner according to claim 1, characterized in that: The atomizer holes (18) are symmetrically arranged on both sides of the atomization cavity (17).

8. The heavy oil pulse valve burner according to claim 1, characterized in that: The nozzle (30) has an inverted cone-shaped pintle hole (31).

9. The control method of the heavy oil pulse valve burner according to any one of claims 1 to 8, characterized in that: include: The heavy oil having a temperature of 80-100° C. and a pressure of 3-4 MPa is guided into the oil storage tank (13) through the oil inlet channel (12); Controlling the electromagnetic pulse valve (20) to operate at a pulse frequency of 200-400 times / minute, so that the heavy oil in the oil storage tank (13) is sprayed into the atomizing cavity (17) one by one; Controlling the atomizer to enter the atomizing chamber (17) through the atomizer hole (18), the atomizer is mixed with the heavy oil and the heavy oil is atomized, wherein the atomizer is compressed air of 1000-5000 Pa; The atomized heavy oil is sprayed out from the nozzle (30) and burned.

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