Small ignition device for cement kiln

Abstract

The utility model discloses a small-sized ignition device for a cement kiln, which relates to the technical field of cement kiln ignition, and comprises an ignition gun and an atomization oil gun which are arranged in a combustor channel and are arranged in a staggered manner, an ignition gun shell is arranged on the periphery of the ignition gun, and a first supporting pipe, a spring wire and a propelling device are further arranged in the ignition gun shell; the peripheries of the two ends of the first supporting pipe are fixed to the front section of the burning torch shell through first supporting blocks, the peripheries of the two ends of the propelling device are fixed to the rear section of the burning torch shell through second supporting blocks, the burning torch penetrates through the first supporting pipe and is connected with the two ends in the first supporting pipe through bearings, and one end of the burning torch is connected with a first connecting block. The ignition device is miniaturized, so that the ignition device can be conveniently arranged in a combustor channel, the ignition device can be quickly positioned and mounted, the small-caliber channel combustor is assisted to realize automatic ignition, and manual ignition is replaced; the burning torch is prevented from being damaged by high temperature or radiation high temperature, and service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cement kiln ignition, in particular to a small ignition device for a cement kiln. Background Technique

[0002] A cement kiln ignition device is an arc ignition device used to extend into a cement kiln through a burner channel for ignition and temperature increase. Since the production temperature of a cement kiln is as high as 1800 degrees and there is radiant high temperature, it is difficult for the ignition gun material to withstand, so it cannot be placed in the cement kiln for a long time; however, during the temperature increase period of the cement kiln, misoperation and flameout may occur, so the ignition gun cannot be withdrawn from the burner channel before the temperature increase is completed.

[0003] In view of this situation, the existing technologies include manufacturing the ignition gun with superalloy; or as Figure 1 shown, lengthening the ignition gun to 16 m (the length increases with the increase of the daily output of the kiln), placing the propulsion device outside the burner channel, and using a flange as a connecting and supporting component for the movement mechanism and the channel port.

[0004] Manufacturing the ignition gun with superalloy has a high cost, and the purchase price is about ten times that of an ordinary temperature-resistant ignition gun. Moreover, when replacing the ignition gun, it is necessary to disassemble and install the high-voltage cable, and improper installation is likely to cause an electric shock accident.

[0005] For the structural design of the external movement mechanism of the channel, usually, a smaller ignition gun channel and a larger atomizing oil gun channel are respectively welded in the channel as the support pipes for the lengthened ignition gun. A steel pipe is welded behind the ignition gun to extend the ignition gun out of the channel, and a large cylinder or electric cylinder is connected at the rear end as a movement device.

[0006] Due to the small diameter (65 - 80 mm) and large length (15 - 18 m) of the channel, and the different internal structures of the burner channels of various brands, there may be situations such as steps, diameter changes, eccentricity, and large frictional force in the channel. The above devices are limited in applicable working conditions and will affect the adjustment of the atomizing oil gun located in the same channel. The installation and disassembly steps are numerous and require the cooperation of multiple people.

[0007] Therefore, a small ignition device for a cement kiln is proposed. Content of the Utility Model

[0008] The purpose of the utility model is to provide a small ignition device for a cement kiln to solve the problems raised in the above background technique.

[0009] To achieve the above object, the present utility model provides the following technical solutions: A small ignition device for a cement kiln, comprising an ignition gun and an atomizing oil gun which are disposed in a combustion burner passage in a staggered manner. An ignition gun housing is provided outside the ignition gun. The ignition gun housing further includes a first support pipe, a spring wire, and a propulsion device. The outer peripheries of both ends of the first support pipe are fixed to the front section of the ignition gun housing through first support blocks. The outer peripheries of both ends of the propulsion device are fixed to the rear section of the ignition gun housing through second support blocks. The ignition gun passes through the first support pipe and is connected thereto at both ends inside the first support pipe through bearings. One end of the ignition gun is connected to a first connection block, and the first connection block is connected to the push rod of the propulsion device. The tail section of the ignition gun is sleeved with a spring wire.

[0010] Further preferably, the end of the push rod of the propulsion device is connected to a second connection block, and the first connection block is connected to the second connection block.

[0011] Preferably, the second support block is provided with card slots, and the number of the card slots is three. The three card slots are respectively engaged with a silica gel ignition wire channel, a protective ground wire channel, and a sensor channel. The silica gel ignition wire channel, the protective ground wire channel, and the sensor channel extend from the second support block to the second connection block.

[0012] Preferably, the first support block is provided with a through slot.

[0013] Preferably, a temperature sensor is provided inside the ignition gun housing.

[0014] Preferably, the tail end of the ignition gun is provided with an external thread, and the ignition gun is threadedly connected to the first connection block. One end of the spring wire is fixedly connected to the first connection block, and the other end is connected to the outside of the ignition gun.

[0015] Preferably, the propulsion device is one of a small air cylinder, a small hydraulic cylinder, or a small electric cylinder.

[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0017] The present utility model miniaturizes the ignition device so as to be easily built into the combustion burner passage, realizes the quick positioning and installation of the ignition device, assists the burner of a small-diameter passage to achieve automatic ignition, and replaces manual ignition; prevents the ignition gun from being damaged by high temperature or radiant high temperature and extends the service life. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the prior art of the present utility model;

[0020] Figure 2 This is a schematic diagram of the internal position of the present utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the present utility model;

[0022] Figure 4 This is a schematic plan view of the internal structure of the present utility model;

[0023] Figure 5 This is a schematic partial perspective view of the interior of the present utility model;

[0024] Figure 6 This is a schematic partial perspective view of the interior of the present utility model.

[0025] Explanation of reference numerals:

[0026] 1 - Ignition gun; 2 - Atomizing oil gun; 3 - Ignition gun housing; 4 - First support tube; 5 - Spring wire; 6 - Second connection block; 7 - Propelling device; 8 - First connection block; 9 - Burner passage; 401 - First support block; 402 - Bearing; 701 - Second support block. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] As Figure 2-6 shown, a small ignition device for a cement kiln includes an ignition gun 1 and an atomizing oil gun 2 that are disposed in a staggered manner within a burner passage 9. An ignition gun housing 3 is provided outside the ignition gun 1. The ignition gun housing 3 further includes a first support tube 4, a spring wire 5, and a propelling device 7. The two ends of the first support tube 4 are fixed to the front section of the ignition gun housing 3 through first support blocks 401. The two ends of the propelling device 7 are fixed to the rear section of the ignition gun housing 3 through second support blocks 701. The ignition gun 1 passes through the first support tube 4 and is connected to it at both ends inside the first support tube 4 through bearings 402. One end of the ignition gun 1 is connected to a first connection block 8, and the first connection block 8 is connected to the push rod of the propelling device 7. The tail section of the ignition gun 1 is sleeved with a spring wire 5.

[0029] The present utility model reduces the original ignition gun 1 propulsion scheme with a length of nearly 20 m and requiring channel support to a miniaturized ignition device with a length within 2 m (increasing with the stroke of the ignition gun 1) and an outer diameter of 28 mm. It includes an ignition gun 1, a first support tube 4, a spring wire 5, and a propulsion device 7. All the above devices are installed inside the ignition gun housing 3. The bearing 402 restricts the movement direction of the ignition gun 1, and the spring wire 5 is used to ensure wire connection during the movement process. Connection screw holes are reserved on the first support block 401 and the second support block 701 for fixing with the ignition gun housing 3. The front end of the ignition gun 1 is designed as a relatively long first support tube 4 with a closing function to prevent the internal wires from being damaged by the high temperature in the kiln. The support block ensures the coaxiality with the ignition gun housing 3, and the friction between the internal ignition gun 1 and the first support tube 4 can also be reduced through the bearing.

[0030] According to an embodiment of the present utility model, a second connection block 6 is connected to the end of the push rod of the propulsion device 7, and the first connection block 8 is connected to the second connection block 6.

[0031] According to an embodiment of the present utility model, three card slots are provided on the second support block 701. The number of card slots is three. The three card slots respectively clamp the silica gel ignition wire channel, the protective ground wire channel, and the sensor channel. The silica gel ignition wire channel, the protective ground wire channel, and the sensor channel extend from the second support block 701 to the second connection block 6. The silica gel ignition wire channel, the protective ground wire channel, and the sensor channel designed at the rear end prevent the displacement of the lines.

[0032] According to an embodiment of the present utility model, a through slot is provided on the first support block 401.

[0033] According to an embodiment of the present utility model, a temperature sensor is provided inside the ignition gun housing 3.

[0034] When the specified temperature is reached, the solenoid valve is opened to blow protective gas into the ignition device. The protective gas blows through the through slot provided on the first support block 401 towards the front-end ignition gun 1 to achieve the protection purpose.

[0035] According to an embodiment of the present utility model, an external thread is provided at the tail end of the ignition gun 1. The ignition gun 1 is threadedly connected to the first connection block 8. One end of the spring wire 5 is fixedly connected to the first connection block 8, and the other end is connected to the outside of the ignition gun 1. The external thread at the tail end of the ignition gun 1 is connected to the internal thread of the first connection block 8. One end of the spring wire 5 is fixed to the first connection block 8 through high-temperature silicone glue and then introduced into the semiconductor electrode of the ignition gun 1.

[0036] [[ID=2I]]According to an embodiment of the present utility model, the propulsion device 7 is one of a small cylinder, a small hydraulic cylinder, or a small electric cylinder. The propulsion device 7 adopts a miniaturized device.

[0037] Working process:

[0038] After the DCS issues an ignition signal, the propulsion device 7 first acts to push the ignition gun 1 out of the burner passage 9. Subsequently, high-voltage electricity is transmitted to the ignition gun 1 through the wire in the silica gel ignition wire passage on the second support block 701 and the spring wire 5, causing the electrode at the head of the ignition gun 1 to arc, thereby igniting the atomized diesel oil to achieve ignition of the cement kiln.

[0039] In summary, the present utility model miniaturizes the ignition device so as to be easily built into the burner passage 9, realizes rapid positioning and installation of the ignition device, assists the small-diameter passage burner to achieve automatic ignition, and replaces manual ignition; prevents the ignition gun 1 from being damaged by high temperature or radiant high temperature and extends its service life; the present utility model has been actually installed in two cement plants, has been applied to actual production ignition many times, and has passed the factory trial run and acceptance.

[0040] Only some exemplary embodiments of the present utility model have been described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A small ignition device for a cement kiln, comprising an ignition gun (1) and an atomizing oil gun (2) which are arranged in a combustion burner passage (9) in a misaligned manner. It is characterized in that; An igniter housing (3) is provided around the igniter (1). The igniter housing (3) further includes a first support tube (4), a spring wire (5), and a propulsion device (7). The outer peripheries of both ends of the first support tube (4) are fixed to the front section of the igniter housing (3) through first support blocks (401). The outer peripheries of both ends of the propulsion device (7) are fixed to the rear section of the igniter housing (3) through second support blocks (701). The igniter (1) penetrates through the first support tube (4) and is connected to it through bearings (402) at both ends inside the first support tube (4). One end of the igniter (1) is connected with a first connection block (8), and the first connection block (8) is connected to the push rod of the propulsion device (7). The tail section of the igniter (1) is sleeved with the spring wire (5).

2. The small ignition device for a cement kiln according to claim 1, characterized in that: The end of the push rod of the propulsion device (7) is connected with a second connection block (6), and the first connection block (8) is connected to the second connection block (6).

3. The small ignition device for a cement kiln according to claim 1, characterized in that: A card slot is provided on the second support block (701). The number of card slots is three. The three card slots respectively snap-connect a silica gel ignition wire channel, a protective ground wire channel, and a sensor channel. The silica gel ignition wire channel, the protective ground wire channel, and the sensor channel extend from the second support block (701) to the second connection block (6).

4. The small ignition device for a cement kiln according to claim 1, characterized in that: A through slot is provided on the first support block (401).

5. A small ignition device for a cement kiln according to any one of claims 1-4, characterized in that: A temperature sensor is provided inside the igniter housing (3).

6. A small ignition device for a cement kiln according to any one of claims 1-4, characterized in that: External threads are provided at the tail end of the igniter (1). The igniter (1) is threadedly connected to the first connection block (8). One end of the spring wire (5) is fixedly connected to the first connection block (8), and the other end is connected to the outside of the igniter (1).

7. A small ignition device for a cement kiln according to any one of claims 1-4, characterized in that: The propulsion device (7) is one of a small cylinder, a small hydraulic cylinder, or a small electric cylinder.

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