Gas device for cooling optical pyrometer of double-hearth kiln

Abstract

The utility model relates to the field of double-chamber lime kilns, in particular to a gas device for cooling a double-chamber kiln optical pyrometer, which comprises a cooling fan, a first cooling air pipe and a second cooling air pipe. The cooling fan is connected to the optical pyrometer through the first cooling air pipe and the second cooling air pipe; a first valve is arranged on the second cooling air pipe; the second cooling air pipe is connected with a third air inlet pipe through a tee joint; the third gas inlet pipe is connected between the first valve and the optical pyrometer; a second valve is arranged on the third air inlet pipe; the outer end of the third air inlet pipe is connected with a compressed air pipeline. According to the utility model, reasonable matching, cooperation and alternative use of a plurality of gas sources can be realized, energy consumption can be reduced to the maximum extent, and the optical pyrometer is prevented from being damaged due to high temperature caused by factors such as pipeline system faults and the like.

Description

Technical Field

[0001] This utility model relates to the field of double-chamber lime kilns, specifically to a gas device for cooling an optical pyrometer in a double-chamber kiln. Background Technology

[0002] The double-chamber kiln spray gun cooling fan is mainly used for cooling the inside of the spray gun tube in the kiln's heat storage chamber. During the kiln's production process, the cooling air generated by the spray gun cooling fan continuously provides cooling air to the kiln spray gun.

[0003] The optical pyrometer is an important instrument in a double-chamber kiln. It mainly converts changes in light intensity inside the kiln into electrical analog signals to determine the calcination intensity inside the kiln. The optical pyrometer is installed in an optical pyrometer bracket, which is mounted on the kiln via a flange. A glass plate is placed below the pyrometer to prevent it from directly contacting the high-temperature gas inside the kiln. Traditionally, a single air source—compressed air—is used to cool the optical pyrometer by blowing air into the optical pyrometer bracket, preventing the pyrometer from overheating and damaging it. However, in production practice, the amount of compressed air used in the above scheme is very large. At the same time, because compressed air is generated by an air compressor, its generation energy consumption is high and the cost is also high. Moreover, using a single air source also has the following drawbacks: (1) If the compressed air circuit fails during normal production, even if the relevant pressure gauge detects insufficient air pressure, timely and effective remedial measures cannot be taken, and the normal cooling of the optical pyrometer cannot be guaranteed; (2) If the power is interrupted during the kiln shutdown, the air compressor cannot generate compressed air, and the normal cooling of the optical pyrometer cannot be guaranteed, which may lead to damage to the optical pyrometer. Summary of the Invention

[0004] To address the above shortcomings, this utility model provides a gas device with high reliability and low energy consumption for cooling a double-chamber kiln optical pyrometer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gas device for cooling a double-chamber kiln optical pyrometer includes a cooling fan, a first cooling duct, and a second cooling duct. The cooling fan is connected to the optical pyrometer via the first and second cooling ducts. A first valve is installed on the second cooling duct. A third air inlet pipe is connected to the second cooling duct via a T-junction. The third air inlet pipe is connected between the first valve and the optical pyrometer. A second valve is installed on the third air inlet pipe. The outer end of the third air inlet pipe is connected to a compressed air pipeline.

[0007] Optionally, the second cooling duct is further provided with a third valve and a fourth air inlet pipe. The third valve is located between the third air inlet pipe and the first valve; the fourth air inlet pipe is located between the first valve and the third valve; and the fourth air inlet pipe is connected to an external air compressor.

[0008] Optionally, the compressed gas pipeline is a nitrogen pipeline connected to an external nitrogen gas source.

[0009] Optionally, the compressed air pipeline is connected to an external compressed air tank.

[0010] Optionally, a first pressure gauge is also provided on the second cooling duct; the first pressure gauge is located between the optical pyrometer and the third valve.

[0011] Optionally, a fourth valve and a fifth valve are provided on the first cooling air duct; a fifth air inlet pipe is provided between the fourth valve and the fifth valve; and the fifth air inlet pipe is connected to an external air compressor.

[0012] Optionally, a sixth air inlet pipe is also provided on the first cooling air duct, the sixth air inlet pipe being located between the fifth valve and the optical pyrometer; a sixth valve is provided on the sixth air inlet pipe; and the outer end of the sixth air inlet pipe is connected to a second compressed air pipeline.

[0013] Optionally, the second compressed gas pipeline is a nitrogen pipeline connected to an external nitrogen gas source.

[0014] Optionally, the second compressed air line is connected to an external compressed air tank.

[0015] Optionally, a second pressure gauge is also provided on the first cooling duct; the second pressure gauge is located between the optical pyrometer and the fifth valve.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By adopting this utility model, it is possible to achieve reasonable combination, coordination and replacement of multiple air sources, which can minimize energy consumption and effectively reduce the use of compressed air under normal production conditions. At the same time, the selection of multiple air sources can achieve more effective protection for optical pyrometers and avoid damage to optical pyrometers due to high temperature caused by factors such as pipeline system failure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention after being assembled with a double-chamber kiln. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "inner", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-2 As shown, a gas device for cooling a double-chamber kiln optical pyrometer includes a cooling fan 15, a first cooling duct 4, and a second cooling duct 10; the cooling fan 15 is connected to the optical pyrometer via the first cooling duct 4 and the second cooling duct 10, as shown. Figure 1As shown, the optical pyrometer 2 is installed inside the optical pyrometer bracket 1, which is mounted on the double-chamber kiln via a flange. A glass plate 3 is placed below the optical pyrometer 2 to prevent it from directly contacting the high-temperature gas inside the kiln. A first valve 17 is installed on the second cooling duct 10; a third air inlet pipe 13 is connected to the second cooling duct 10 via a tee; the third air inlet pipe connects the first valve and the optical pyrometer; a second valve 12 is installed on the third air inlet pipe 13; and the outer end of the third air inlet pipe 13 is connected to a compressed gas pipeline. Optionally, the compressed gas pipeline is a nitrogen pipeline connected to an external nitrogen source. In specific implementations, this can be a nitrogen source supplied by the pipeline after pressurization by the machine or a nitrogen source stored in a compressed gas tank. In some embodiments, the compressed gas tank may also contain other compressed gases.

[0025] Optional, such as Figure 1 As shown, the second cooling air duct 10 is also provided with a third valve 9 and a fourth air inlet pipe 10-1. The third valve 9 is located between the third air inlet pipe 13 and the first valve 17; the fourth air inlet pipe 10-1 is located between the first valve 17 and the third valve 9; the fourth air inlet pipe 10-1 is connected to an external air compressor, that is, the fourth air inlet pipe 10-1 can supply compressed air generated by the compressor.

[0026] Optional, such as Figure 1 As shown, a first pressure gauge 7 is also installed on the second cooling duct 10; the first pressure gauge 7 is located between the optical pyrometer 2 and the third valve 9, as shown. Figure 1 As shown, in this embodiment, the first pressure gauge 7 is disposed between the third air inlet pipe 13 and the optical pyrometer 2, and the function of the first pressure gauge 7 is to monitor the pressure value of this section of the pipe.

[0027] Optionally, a fourth valve 18 and a fifth valve 8 are provided on the first cooling air duct 4; a fifth air inlet pipe 4-1 is provided between the fourth valve 18 and the fifth valve 8; the fifth air inlet pipe 4-1 is connected to an external air compressor, that is, the fifth air inlet pipe 4-1 can supply compressed air generated by the compressor.

[0028] Optionally, a sixth air inlet pipe 16 is also provided on the first cooling air duct 4. The sixth air inlet pipe 16 is located between the fifth valve 8 and the optical pyrometer; a sixth valve 14 is provided on the sixth air inlet pipe 16; the outer end of the sixth air inlet pipe 16 is connected to a second compressed gas pipeline. Optionally, the second compressed gas pipeline is a nitrogen pipeline, connected to an external nitrogen source. In specific implementations, it can be a nitrogen source transported by the pipeline after the machine is pressurized, or a nitrogen source stored in a compressed gas tank. In some embodiments, the compressed gas tank can also contain other compressed gases. In this embodiment, such as... Figure 1As shown, the sixth intake pipe 16 and the third intake pipe 13 can be connected to a common intake pipe 11.

[0029] Optionally, a second pressure gauge 6 is also provided on the first cooling duct 4; the second pressure gauge 6 is located between the optical pyrometer 2 and the fifth valve 8.

[0030] The following control effects can be achieved by using this utility model:

[0031] During normal use, air is blown by the cooling fan 15 and supplied through the first cooling duct 4 and the second cooling duct 10. At this time, the first valve 17, the fourth valve 18, the fifth valve 8, and the third valve 9 are open. However, because the fifth air inlet pipe 4-1 and the fourth air inlet pipe 10-1 are connected to the air compressor's air source, the air compressor's air source is not activated. In some embodiments, to improve sealing, valves can be installed on the fifth air inlet pipe 4-1 and the fourth air inlet pipe 10-1 respectively (in this closed state, only supplied by the cooling fan 15). The cooling fan 15... Compared with air compressor air supply, air supply has lower energy consumption, reduces or avoids the use of air compressor air source, and reduces production costs; the first pressure gauge 7 and the second pressure gauge 6 monitor the pipeline air pressure value. If the monitored pipeline air pressure value is lower than the set value or the relevant temperature at the optical pyrometer 2 is close to / higher than the safe value due to related faults, the following control measures can be selected: (1) the first valve 17 and / or the fourth valve 18 can be closed, and then the air compressor air source of the fifth air inlet pipe 4-1 and the fourth air inlet pipe 10-1 can be used to clean and cool the optical pyrometer 2;

[0032] (2) You can choose to close the fifth valve 8 and / or the third valve 9, and then open the second valve 12 and / or the sixth valve 14 to use nitrogen to purge and cool the optical pyrometer 2;

[0033] (3) You can choose to close the first valve 17 and the fourth valve 18, open the second valve 12 and close the sixth valve 14, close the third valve 9 and open the fifth valve 8, and use nitrogen and air compressor air source to clean and cool the optical pyrometer 2.

[0034] By adopting this utility model, it is possible to achieve reasonable combination, coordination and replacement of multiple air sources, which can minimize energy consumption and effectively reduce the use of compressed air under normal production conditions. At the same time, the selection of multiple air sources can achieve more effective protection for optical pyrometers and avoid damage to optical pyrometers due to high temperature caused by factors such as pipeline system failure.

Claims

1. A gas device for cooling a double-chamber kiln optical pyrometer, characterized in that: It includes a cooling fan, a first cooling duct, and a second cooling duct; the cooling fan is connected to an optical pyrometer through the first and second cooling ducts; a first valve is installed on the second cooling duct; a third air inlet pipe is connected to the second cooling duct via a T-junction; the third air inlet pipe is connected between the first valve and the optical pyrometer; a second valve is installed on the third air inlet pipe; and the outer end of the third air inlet pipe is connected to a compressed air pipeline.

2. The gas device for cooling a double-chamber kiln optical pyrometer according to claim 1, characterized in that: The second cooling duct is also equipped with a third valve and a fourth air inlet pipe. The third valve is located between the third air inlet pipe and the first valve. The fourth air inlet pipe is located between the first valve and the third valve. The fourth air inlet pipe is connected to an external air compressor.

3. The gas device for cooling a double-chamber kiln optical pyrometer according to claim 1, characterized in that: The compressed gas pipeline is a nitrogen pipeline, connected to an external nitrogen gas source.

4. The gas device for cooling a double-chamber kiln optical pyrometer according to claim 1, characterized in that: The compressed air pipeline is connected to an external compressed air tank.

5. A gas device for cooling a double-chamber kiln optical pyrometer according to claim 1, characterized in that: A first pressure gauge is also installed on the second cooling duct; the first pressure gauge is located between the optical pyrometer and the third valve.

6. A gas device for cooling a double-chamber kiln optical pyrometer according to claim 1, characterized in that: The first cooling duct is equipped with a fourth valve and a fifth valve; a fifth air inlet pipe is provided between the fourth valve and the fifth valve; and the fifth air inlet pipe is connected to an external air compressor.

7. A gas device for cooling a double-chamber kiln optical pyrometer according to claim 6, characterized in that: The first cooling duct is also provided with a sixth air inlet pipe, which is located between the fifth valve and the optical pyrometer; the sixth air inlet pipe is provided with a sixth valve; the outer end of the sixth air inlet pipe is connected to a second compressed air pipeline.

8. A gas device for cooling a double-chamber kiln optical pyrometer according to claim 7, characterized in that: The second compressed air pipeline is a nitrogen pipeline, connected to an external nitrogen gas source.

9. A gas device for cooling a double-chamber kiln optical pyrometer according to claim 7, characterized in that: The second compressed air pipeline is connected to an external compressed air tank.

10. A gas device for cooling a double-chamber kiln optical pyrometer according to claim 7, characterized in that: A second pressure gauge is also installed on the first cooling duct; the second pressure gauge is located between the optical pyrometer and the fifth valve.

Images