Interlocking device for preventing explosion of electrical tar precipitator

Abstract

The utility model discloses an interlocking device for preventing explosion of an electrical tar precipitator, which relates to the technical field of coal chemical industry equipment and comprises a shell, a combustible gas analysis device is arranged on one side far away from the shell, a gas pump is arranged in the combustible gas analysis device, and the gas inlet end of the gas pump is communicated with the shell through a second gas inlet pipe. The air outlet end of the air pump is communicated with the analyzer through a second air outlet pipe, and the outer surface of the top end of the analyzer is communicated with the shell through a third air inlet pipe; firstly, through the arrangement of the on-line combustible gas analyzer, real-time and comprehensive analysis of gas in the shell of the electrical tar precipitator is realized, a gas pump is arranged in the analyzer, a gas sample in the shell can be extracted through a second gas inlet pipe, and the content of combustible components in the gas is analyzed and judged through the analyzer; even when the electrical tar precipitator is just started or overhauled, gas in the shell is not completely replaced, and an explosive mixture is possibly formed, the explosive mixture can be perceived in time.

Description

Technical Field

[0001] The utility model relates to the technical field of coal chemical equipment, in particular to an interlocking device for preventing an electric tar precipitator from exploding. Background Art

[0002] In traditional industrial production such as coking, chemical industry, fertilizer, and semi-coke, coal gas contains certain impurities such as tar and dust. Electrostatic tar precipitator is a high-efficiency tar and dust purification equipment widely used in coking, chemical industry, fertilizer, semi-coke and other fields.

[0003] The existing explosion-proof technology is to install an oxygen content analyzer after the electric precipitator, and interlock it with the electric precipitator through the level of oxygen content in the coal gas. This interlock can only play an interlocking protection role for the normally working electric precipitator, because the oxygen content analyzer can only analyze and interlock when the tar droplet content in the raw coal gas is low after the electric precipitator is working normally. It cannot play an analysis and interlocking role when the electric precipitator is just started or under maintenance. During the electric precipitator test run or just starting up, due to incomplete replacement in the shell, once explosive gas is formed, an explosion will inevitably occur during the power supply process to the electric precipitator. Utility Model Content

[0004] In order to solve the above technical problems, an interlocking device is provided to prevent the explosion of an electric tar precipitator. This technical solution solves the problem that the existing explosion-proof technology proposed in the above background technology is to install an oxygen content analyzer after the electric tar precipitator, and interlock it with the electric tar precipitator according to the oxygen content in the coal gas. This interlocking can only play an interlocking protection role for the normally operating electric tar precipitator, because the oxygen content analyzer can only analyze and interlock when the tar droplet content in the raw coal gas is low after the electric precipitator is working normally. It cannot play an analysis and interlocking role when the electric precipitator is just started or repaired. During the electric precipitator test run or just starting up, due to incomplete replacement in the shell, once explosive gas is formed, an explosion will inevitably occur during the power supply process to the electric precipitator.

[0005] In order to achieve the above purpose, the technical solution adopted by this utility model is:

[0006] An interlocking device for preventing an electric tar precipitator from exploding comprises a shell, a combustible gas analysis device being provided on a side away from the shell, an air pump being provided inside the combustible gas analysis device, an air inlet end of the air pump being connected to the shell via a second air inlet pipe, an air outlet end of the air pump being connected to an analyzer via a second air outlet pipe, and an outer surface of the top end of the analyzer being connected to the shell via a third air inlet pipe, an alarm being provided on the right side of the analyzer, and both the analyzer and the alarm being provided at the top end of the combustible gas analysis device.

[0007] Preferably, a first air inlet pipe is provided on the outer surface of the bottom end of the shell, a first air outlet pipe is provided on the outer surface of the top end of the shell, and the bottom end of the shell is connected to a discharge pipe.

[0008] Preferably, an insulating box is provided on the top of the shell, a gas purifier is provided inside the insulating box, two groups of insulators are provided inside the insulating box, heaters are sleeved on the outer surfaces of the two groups of insulators, and heating tubes are provided on the inner surfaces of the two groups of heaters.

[0009] Preferably, an upper fixing frame is provided inside the shell, and the upper fixing frame is fixedly connected to the lower fixing frame through an electrode wire. A precipitation electrode is sleeved and installed on the outer surface away from the electrode wire, and two groups of gas plates are provided at the bottom away from the lower fixing frame.

[0010] Preferably, the two groups of gas distribution plates are arranged one above the other at the inner bottom end of the shell.

[0011] Preferably, the top end of the upper fixing frame is fixedly connected to the two groups of insulators.

[0012] Preferably, an operating room is provided on a side away from the shell, a high-voltage rectifier is provided inside the operating room, an electric catch relay is fixedly installed on the top left side of the operating room, and the electric catch relay is electrically connected to the electrode wire.

[0013] Preferably, a high voltage generator is provided on a side away from the operating chamber, and the high voltage generator is electrically connected to the high voltage rectifier.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] First, through the setting of the online combustible gas analyzer, real-time and comprehensive analysis of the gas in the shell of the electrostatic precipitator is achieved. The analyzer has a built-in air pump, which can extract gas samples in the shell through the second air inlet pipe, and determine the content of combustible components in the gas through the analyzer. Even if the electrostatic precipitator is just started or during maintenance, the gas replacement in the shell is incomplete and an explosive mixture may be formed. It can be detected in time. Secondly, the interlocking device realizes rapid linkage from detection to response. When the combustible gas analyzer detects that the concentration of combustible gas in the shell reaches 25% of the lower explosion limit, the alarm is triggered immediately, warning the operator to immediately stop all inspection and maintenance work or take measures. Other safety measures are taken. This timely alarm mechanism effectively avoids serious consequences caused by ignoring potential dangers. Furthermore, when the concentration of combustible gas continues to rise to 50% of the lower explosion limit, the interlock device is automatically activated. Through the close cooperation of the DCS system, relays and electric precipitator distribution cabinet, the power supply system of the electric precipitator is quickly cut off. This automatic power-off protection measure eliminates the risk of explosion caused by ignition sources such as electric sparks, ensuring the safe operation of the equipment. In addition, the interlock device is also equipped with a gas return function. After analyzing the gas sample, the combustible gas analyzer will return the remaining gas to the electric precipitator through the third air inlet pipe, avoiding pollution to the environment caused by the emission of harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the insulation box of the present utility model;

[0019] Figure 4 This is a schematic diagram of the precipitation electrode structure of the present utility model.

[0020] The numbers in the figure are:

[0021] 1. Housing; 11. First air inlet pipe; 12. First air outlet pipe; 13. Discharge pipe;

[0022] 2. Insulation box; 3. Gas purifier;

[0023] 4. Heater; 41. Heating tube; 42. Insulator;

[0024] 5. Gas distributor; 51. Lower fixing frame; 52. Precipitation electrode; 53. Upper fixing frame; 54. Electrode wire;

[0025] 6. Combustible gas analysis device; 61. Air pump; 62. Second air inlet pipe; 63. Second air outlet pipe; 64. Analyzer; 65. Alarm; 66. Third air inlet pipe;

[0026] 7. Electric catch relay;

[0027] 8. Operation room; 81. High-voltage rectifier;

[0028] 9. High voltage generator. DETAILED DESCRIPTION

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0030] Reference Figure 1-4 As shown, an interlocking device for preventing an electric tar precipitator from exploding comprises a shell 1, a first air inlet pipe 11 is provided on the outer surface of the bottom end of the shell 1, a first air outlet pipe 12 is provided on the outer surface of the top end of the shell 1, a discharge pipe 13 is connected to the bottom end of the shell 1, a combustible gas analysis device 6 is provided on the side away from the shell 1, an air pump 61 is provided inside the combustible gas analysis device 6, an air inlet end of the air pump 61 is connected to the shell 1 through a second air inlet pipe 62, and an air outlet end of the air pump 61 is connected to the analyzer through a second air outlet pipe 63. The analyzer 64 is connected, and the outer surface of the top end of the analyzer 64 is connected to the shell 1 through the third air inlet pipe 66. An alarm 65 is provided on the right side of the analyzer 64. The analyzer 64 and the alarm 65 are both provided at the top end of the combustible gas analysis device 6. An insulating box 2 is provided on the top of the shell 1, and a gas purifier 3 is provided inside the insulating box 2. Two groups of insulators 42 are provided inside the insulating box 2. The outer surfaces of the two groups of insulators 42 are sleeved with heaters 4, and the inner surface of the heater 4 is provided with a heating tube 41.

[0031] In this solution, the combustible gas analysis device 6 is responsible for real-time monitoring of the gas composition inside the shell 1, especially the concentration of combustible gas. When it is detected that the combustible gas concentration exceeds the preset safety threshold, the analyzer 64 will immediately trigger the alarm 65, emit an audible and visual alarm signal, and notify the operator to take emergency measures. The circulation loop formed by the second air inlet pipe 62 and the second air outlet pipe 63 ensures the accuracy and timeliness of the analysis. At the same time, the third air inlet pipe 66 pumps the analyzed gas into the interior of the shell 1 again through the air pump 61. The insulating box 2 not only provides an electrically isolated environment for the gas purifier 3 and the insulator 42, but also ensures that these components can work normally in a low-temperature environment through the built-in heater 4 and heating tube 41, avoiding the risk of electrical short circuit caused by the accumulation of condensed water. The heater 4 takes into account the balance between energy efficiency and safety to ensure that no additional safety hazards are caused during the heating process.

[0032] Reference Figure 1-4 As shown, an upper fixing frame 53 is provided inside the shell 1, and the top of the upper fixing frame 53 is fixedly connected to the two groups of insulators 42. The upper fixing frame 53 is fixedly connected to the lower fixing frame 51 through the electrode wire 54. A precipitation electrode 52 is sleeved and installed on the outer surface away from the electrode wire 54. Two groups of gasification plates 5 are provided at the bottom end away from the lower fixing frame 51. The two groups of gasification plates 5 are arranged up and down at the bottom end of the shell 1. An operating room 8 is provided on the side away from the shell 1. A high-voltage rectifier 81 is provided inside the operating room 8. An electric catch relay 7 is fixedly installed on the top left side of the operating room 8. The electric catch relay 7 is electrically connected to the electrode wire 54. A high-voltage generator 9 is provided on the side away from the operating room 8. The high-voltage generator 9 is electrically connected to the high-voltage rectifier 81.

[0033] In this solution, the upper fixing frame 53 not only fixes the insulator 42, but is also connected to the lower fixing frame 51 through the electrode wire 54, forming the main structure of the electric field, ensuring the uniformity and stability of the electric field, and improving the capture efficiency of the electric tar precipitator. The electric precipitator relay 7, as one of the core components of the electrical control system, is responsible for controlling the on and off of the electrode wire 54 according to operating instructions or safety signals. When it is detected that the concentration of combustible gas is too high or too low, the electric precipitator relay 7 will quickly cut off the power supply to prevent the situation from further deteriorating. The high-voltage generator 9 is responsible for providing a stable high-voltage power supply to the electrode wire 54. Its use in conjunction with the high-voltage rectifier 81 not only improves the stability of the power supply, but also protects the safety of equipment and personnel.

[0034] The working principle of the present invention is as follows: first, the tar-containing gas enters the interior of the shell 1 through the first air inlet pipe 11 at the bottom end of the shell 1. In the shell 1, the gas is evenly distributed through the two sets of gas plates 5 to ensure smooth gas flow and improve purification efficiency. At the same time, the gas purifier 3 and the heater 4 in the insulating box 2 work together. The heater 4 is heated by the heating tube 41 to maintain a suitable temperature in the insulating box 2 to prevent condensation on the surface of the insulator 42, ensure electrical insulation performance, and ensure operational safety. During the rising process of the gas, the electrode wire 54 becomes a discharge electrode under the action of the high-voltage electric field, and the precipitation electrode 52 serves as a collecting electrode. When the tar-containing gas passes through the area between the electrode wire 54 and the precipitation electrode 52, the tar particles are ionized and deposited on the precipitation electrode 52 under the action of the electric field force, thereby realizing the separation of tar and gas. The purified gas is then discharged through the first air outlet pipe 12 at the top end of the shell 1. At the same time, the combustible gas analysis device 6 continuously monitors the gas composition inside the shell 1. The air pump 61 extracts the gas sample in the shell 1 through the second air inlet pipe 62, and sends the sample to the analyzer 64 for analysis through the second air outlet pipe 63. The analyzer 64 accurately detects the combustible gas concentration in the gas sample and feeds back the detection results in real time. If the analyzer 64 detects that the combustible gas concentration exceeds or is lower than the preset safety threshold, it will immediately trigger the alarm 65 to sound an alarm, reminding the operator to pay attention and take corresponding measures. In addition, through the third air inlet pipe 66, the analyzer 64 can also return the analyzed gas to the shell 1 to maintain the stability of the analysis environment. In the operating room 8, the high-voltage rectifier 81 converts the input AC power into DC power and supplies it to the high-voltage generator 9. After the high-voltage generator 9 further boosts the voltage, it controls the voltage on the electrode wire 54 through the electric capture relay 7 to achieve electric field regulation. As a key safety control component, the electric capture relay 7 can quickly cut off the power supply when an abnormal signal is detected to prevent dangerous situations such as explosions in the electric precipitator.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An interlocking device for preventing explosion of an electric tar precipitator, comprising a housing (1), characterized in that: A combustible gas analysis device (6) is provided on a side away from the shell (1), an air pump (61) is provided inside the combustible gas analysis device (6), an air inlet end of the air pump (61) is connected to the shell (1) through a second air inlet pipe (62), an air outlet end of the air pump (61) is connected to an analyzer (64) through a second air outlet pipe (63), and the top outer surface of the analyzer (64) is connected to the shell (1) through a third air inlet pipe (66), an alarm (65) is provided on the right side of the analyzer (64), and both the analyzer (64) and the alarm (65) are provided at the top of the combustible gas analysis device (6).

2. The interlocking device for preventing explosion of an electric tar precipitator according to claim 1, characterized in that: The outer surface of the bottom end of the shell (1) is provided with a first air inlet pipe (11), the outer surface of the top end of the shell (1) is provided with a first air outlet pipe (12), and the bottom end of the shell (1) is connected to a discharge pipe (13).

3. The interlocking device for preventing explosion of an electric tar precipitator according to claim 1, characterized in that: An insulating box (2) is provided on the top of the shell (1), a gas purifier (3) is provided inside the insulating box (2), two groups of insulators (42) are provided inside the insulating box (2), heaters (4) are sleeved on the outer surfaces of the two groups of insulators (42), and heating tubes (41) are provided on the inner surfaces of the two groups of heaters (4).

4. The interlocking device for preventing explosion of an electric tar precipitator according to claim 3, characterized in that: An upper fixing frame (53) is provided inside the shell (1), and the upper fixing frame (53) is fixedly connected to the lower fixing frame (51) through an electrode wire (54). A precipitation electrode (52) is sleeved and installed on the outer surface away from the electrode wire (54), and two groups of gas plates (5) are provided at the bottom end away from the lower fixing frame (51).

5. The interlocking device for preventing explosion of an electric tar precipitator according to claim 4, characterized in that: The two groups of gas distribution plates (5) are arranged one above the other at the inner bottom end of the shell (1).

6. The interlocking device for preventing explosion of an electric tar precipitator according to claim 4, characterized in that: The top end of the upper fixing frame (53) is fixedly connected to the two groups of insulators (42).

7. The interlocking device for preventing explosion of electric tar precipitator according to claim 1, characterized in that An operating room (8) is provided on a side away from the housing (1), a high-voltage rectifier (81) is provided inside the operating room (8), an electric catch relay (7) is fixedly installed on the top left side of the operating room (8), and the electric catch relay (7) is electrically connected to the electrode wire (54).

8. The interlocking device for preventing explosion of an electric tar precipitator according to claim 7, characterized in that: A high-voltage generator (9) is provided on a side away from the operating chamber (8), and the high-voltage generator (9) is electrically connected to the high-voltage rectifier (81).

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