Lock hopper deslagging device with alarm function

Abstract

The utility model relates to the technical field of lock hopper deslagging, in particular to a lock hopper deslagging device with an alarm function, which comprises a lock hopper body, a lock hopper, an alarm device and a lock hopper, and a connecting hole is arranged at the upper end of the right side of the lock hopper body; the compressed air tank is located in the right side direction of the lock hopper body, and a supporting frame is arranged at the lower end of the compressed air tank; the air homogenizing pipeline is in threaded connection with the inner side of the connecting hole, an air inlet pipe is arranged at one end of the air homogenizing pipeline, and a compressed air conveying pipe is communicated between the compressed air tank and the air inlet pipe. The radio frequency admittance level indicator can give an early warning before ash in the lock hopper body does not exceed 80% of the volume, the situation that the ash enters a gasification furnace or blocks a top valve is avoided, and the influence caused by dust coverage can be avoided by adopting the conical air curtain which is collected inwards to blow a probe of the radio frequency admittance level indicator body.

Description

Technical Field

[0001] The utility model relates to the technical field of lock bucket slag discharge, in particular to a lock bucket slag discharge device with an alarm function. Background Art

[0002] The lock hopper is a crucial component of the coal gasification unit's slag discharge system and a key component of its continuous and stable operation. It plays a crucial role in the long-term operation of the entire unit. Designed for discharging solid particles (such as ash, catalyst, and coal slag) under high-pressure, high-temperature, or hazardous media conditions, the lock hopper is primarily used in industrial processes such as coal gasification, fluidized-bed reactors, and chemical plants. Its core function is to safely and continuously discharge solid waste while maintaining stable system pressure.

[0003] Currently, during operation, a lock hopper sometimes receives a large amount of coal slag from a coal gasifier in a short period of time. If the ash or liquid (flushing water) level in the lock hopper is too high, such as exceeding 80% of the volume, it may cause ash to enter the gasifier or clog the top valve. To avoid this, a radio frequency admittance level sensor is usually installed on the side wall of the lock hopper, away from the inlet. However, the internal environment of the lock hopper is complex and full of dust during operation. The radio frequency admittance level sensor is easily covered by dust in such an environment for a long time. This dust interferes with the sensor's signal transmission and detection, resulting in reduced monitoring accuracy and inability to accurately obtain ash level information. For example, the "high level" signal, which should be triggered when the material level reaches 80%, may be triggered by the admittance value reaching the threshold prematurely due to ash accumulation, resulting in an early alarm. If the ash layer thickness is uneven (such as localized coking), it will also cause signal fluctuations (such as the material level value fluctuating). To this end, we propose a lock hopper slag discharge device with an alarm function. Utility Model Content

[0004] The purpose of the utility model is to provide a lock bucket slag discharge device with an alarm function, which has the advantages of alarm function and high monitoring accuracy, and solves the problem that the internal environment of the lock bucket is complex and full of dust during operation, and the radio frequency admittance level meter is in such an environment for a long time and is easily covered by dust. The covered dust will interfere with the signal transmission and detection of the sensor, resulting in a decrease in monitoring accuracy and the inability to accurately obtain ash and slag level information.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a locking bucket slag discharge device with an alarm function, comprising:

[0006] A lock bucket body, wherein the upper end of the right side of the lock bucket body is provided with a connection hole;

[0007] A compressed air tank, located on the right side of the lock bucket body, with a support frame provided at the lower end of the compressed air tank;

[0008] An air equalizing pipe is threadedly connected to the inner side of the connecting hole, an air inlet pipe is provided at one end of the air equalizing pipe, a compressed air delivery pipe is connected between the compressed air tank and the air inlet pipe, a radio frequency admittance level meter body is provided on the inner side of the air equalizing pipe, and a connecting cover is provided at the right end of the radio frequency admittance level meter body.

[0009] Preferably, a control valve is provided at the lower end of the lock bucket body.

[0010] Preferably, the connection cover is threadedly connected to the gas equalization pipeline.

[0011] Preferably, a dispersion ring groove is provided on the inner surface of the right end of the gas equalization pipe, and the dispersion ring groove is connected to the air inlet pipe.

[0012] Preferably, an air collecting annular groove is provided on the inner surface of the left end of the air equalizing pipe, and a guide slope is provided on the left end of the inside of the air collecting annular groove, and the inclination angle of the guide slope is between 3° and 45°.

[0013] Preferably, a gas distribution hole is provided between the gas collecting annular groove and the dispersing annular groove, the number of the gas distribution holes is multiple, and the angles between two adjacent gas distribution holes are equal.

[0014] Preferably, an exhaust ring groove is provided between the gas collecting ring groove and the left side of the gas equalizing pipe, and the exhaust ring groove is a conical structure converging inwards.

[0015] Preferably, a flow control valve is provided at the upper end of the compressed air delivery pipe.

[0016] Preferably, the outer side of the radio frequency admittance level meter body is coated with a self-cleaning coating, and the self-cleaning coating is YC-8703 hydrophobic self-cleaning nano-composite ceramic coating.

[0017] Preferably, the connecting hole is installed at an angle of 18°-22° to the horizontal plane of the lock bucket body.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The utility model can give an early warning before the ash in the lock bucket body exceeds 80% of the volume, thereby preventing the ash from entering the gasifier or clogging the top valve.

[0020] 2. The utility model can reduce the accumulation of materials or dust on the probe by adjusting the installation angle of the radio frequency admittance level meter body.

[0021] 3. The utility model uses an inward-converging conical wind curtain to blow the probe of the radio frequency admittance level meter body, which can avoid the influence of dust coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0023] Figure 2 This is a schematic cross-sectional view of the utility model from a second viewing angle;

[0024] Figure 3 This is an enlarged structural diagram of point A of the utility model;

[0025] Figure 4 This is a schematic diagram of the matching structure of the gas equalization pipeline and the radio frequency admittance level meter body of the utility model;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the gas pipeline of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the perfluoropolyether coating of the utility model.

[0028] In the figure: 1. Lock bucket body; 101. Connection hole; 102. Control valve; 2. Compressed air tank; 201. Support frame; 202. Compressed air pipeline; 3. Air distribution pipeline; 301. Connection cover; 302. Air inlet pipe; 303. Flow control valve; 304. Air distribution hole; 305. Air collecting ring groove; 306. Exhaust ring groove; 307. Guide slope; 308. Dispersion ring groove; 4. RF admittance level meter body; 401. Self-cleaning coating. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The lock bucket body 1, connecting hole 101, control valve 102, compressed air tank 2, support frame 201, compressed air delivery pipe 202, gas equalization pipe 3, connecting cover 301, air inlet pipe 302, flow control valve 303, gas equalization hole 304, gas collecting ring groove 305, exhaust ring groove 306, guide slope 307, dispersion ring groove 308, radio frequency admittance level meter body 4 and self-cleaning coating 401 components of the present application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0031] Example 1

[0032] See also Figures 1-6The utility model provides a technical scheme: a lock hopper slag discharge device with alarm function, which comprises

[0033] The lock hopper body 1 is provided with a connecting hole 101 at the upper end of the right side;

[0034] The compressed air tank 2 is located at the right side of the lock hopper body 1, and the lower end of the compressed air tank 2 is provided with a support frame 201;

[0035] The equalizing air pipe 3 is threadedly connected to the inner side of the connecting hole 101, one end of the equalizing air pipe 3 is provided with an air inlet pipe 302, the compressed air tank 2 and the air inlet pipe 302 are communicated through a compressed air delivery pipe 202, the inner side of the equalizing air pipe 3 is provided with a radio frequency admittance material level meter body 4, and the right end of the radio frequency admittance material level meter body 4 is provided with a connecting cover 301.

[0036] The lower end of the lock hopper body 1 is provided with a control valve 102, the connecting cover 301 is threadedly connected to the equalizing air pipe 3, and the connecting hole 101 is installed at an angle of 18°-22° between the horizontal plane of the lock hopper body 1.

[0037] The technical scheme: before starting the device, the equipment is checked, when the equipment is in a normal state, the mains is connected to the device through the master control switch, then, the normal working operation program based on the prior art is set through the external control equipment, then, through the setting of the radio frequency admittance material level meter body 4, high-frequency radio frequency signals can be emitted to the medium through the probe during its operation, and the difference in the “admittance value” (a comprehensive parameter of conductivity and permittivity) of the medium (ash, liquid, etc.) and air is used to judge the material level; when the probe contacts the medium, the admittance value changes suddenly, and the instrument outputs the material level signal accordingly, so that the ash in the lock hopper body 1 can be warned before the volume exceeds 80% (this is the prior art, and the volume standard of the warning is set by the user according to the use condition, and the alarm device is not shown in the figure);

[0038] Through the setting of the equalizing air pipe 3, after the compressed air tank 2 is opened, the compressed gas can enter the equalizing air pipe 3 through the compressed air delivery pipe 202 and the air inlet pipe 302, and then be discharged from the left end of the equalizing air pipe 3, so that the compressed gas can form a circular air curtain to blow the probe of the radio frequency admittance material level meter body 4, thereby achieving the purpose of cleaning the probe of the radio frequency admittance material level meter body 4 (the blowing cleaning frequency is twice an hour, and each time is between 8-15 seconds), and at the same time, the connecting hole 101 is installed at an angle of 18°-22° between the horizontal plane of the lock hopper body 1, so that the accumulation of materials or dust on the probe can be reduced, thereby effectively improving the accuracy of the alarm monitoring of the device.

[0039] Need to explain, the control valve 102, compressed air tank 2 and radio frequency admittance material position meter body 4 used by the device can be directly purchased from the market, and the connection mode of each component and the electrical connection relationship are all mature conventional means in the prior art, so specific description is not made here.

[0040] Example two

[0041] Based on example one, the utility model discloses as shown in Figure 1-Figure 5 The inner surface of the right end of the equalizing pipeline 3 is provided with a dispersion ring groove 308, and the dispersion ring groove 308 is communicated with the air inlet pipe 302, the inner surface of the left end of the equalizing pipeline 3 is provided with a gas collecting ring groove 305, the left end inside the gas collecting ring groove 305 is provided with a guide slope surface 307, the inclination angle of the guide slope surface 307 is between 3°-45°, the gas collecting ring groove 305 and the dispersion ring groove 308 are provided with a plurality of equalizing through holes 304, the included angle between adjacent two equalizing through holes 304 is equal, the gas collecting ring groove 305 and the left side of the equalizing pipeline 3 are provided with an exhaust ring groove 306, and the exhaust ring groove 306 is a tapered structure that converges inward.

[0042] The technical scheme: through the setting of the dispersion ring groove 308, the compressed gas can be quickly dispersed after entering the inside through the air inlet pipe 302, and the gas is transported into the gas collecting ring groove 305 through a plurality of equalizing through holes 304, so that the gas can be quickly and uniformly dispersed, and the situation that the compressed gas is too concentrated in a local part is avoided, and the setting of the guide slope surface 307 can guide the uniformly dispersed gas, so that the resistance when the gas converges and flows is reduced, and after the gas is discharged through the exhaust ring groove 306, the tapered structure that converges inward can make the gas form a more uniform air curtain and blow to the probe of the radio frequency admittance material position meter body 4.

[0043] Example three

[0044] Based on example one, the utility model discloses as shown in Figure 1-Figure 5 The upper end of the compressed air conveying pipe 202 is provided with a flow control valve 303.

[0045] The technical scheme: through the setting of the flow control valve 303, the input flow of the compressed gas can be controlled, so that the stability and cleaning effect of the clean air curtain are guaranteed.

[0046] Example four

[0047] Based on example one, the utility model discloses as shown in Figures 1-6 The outer side of the radio frequency admittance material position meter body 4 is coated with a self-cleaning coating 401, and the self-cleaning coating 401 is YC-8703 hydrophobic self-cleaning nano composite ceramic coating.

[0048] This technical solution: through the provision of a self-cleaning coating 401 and with the assistance of the YC-8703 hydrophobic self-cleaning nano-composite ceramic coating, the outer surface of the radio frequency admittance level meter body 4 has super-hydrophobic properties, and dust, oil stains, etc. are difficult to adhere to, and are not easy to fall off under the erosion of high-temperature airflow. At the same time, the hardness reaches 7H, and it is resistant to acid and alkali, and salt spray, which is conducive to extending the service life of the radio frequency admittance level meter body 4.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A lock bucket slag discharge device with alarm function, characterized in that: include: A lock bucket body (1), wherein a connection hole (101) is provided at the upper end of the right side of the lock bucket body (1); A compressed air tank (2), the compressed air tank (2) being located on the right side of the lock bucket body (1), and a support frame (201) being provided at the lower end of the compressed air tank (2); An air equalizing pipe (3) is threadedly connected to the inner side of the connecting hole (101); an air inlet pipe (302) is provided at one end of the air equalizing pipe (3); a compressed air delivery pipe (202) is connected between the compressed air tank (2) and the air inlet pipe (302); a radio frequency admittance level meter body (4) is provided on the inner side of the air equalizing pipe (3); and a connecting cover (301) is provided at the right end of the radio frequency admittance level meter body (4).

2. The locking bucket slag discharge device with alarm function according to claim 1, characterized in that: A control valve (102) is provided at the lower end of the lock bucket body (1).

3. The locking bucket slag discharge device with alarm function according to claim 1, characterized in that: The connection cover (301) is threadedly connected to the gas equalization pipeline (3).

4. The locking bucket slag discharge device with alarm function according to claim 1, characterized in that: A dispersion annular groove (308) is provided on the inner surface of the right end of the gas equalizing pipe (3), and the dispersion annular groove (308) is communicated with the air inlet pipe (302).

5. The locking bucket slag discharge device with alarm function according to claim 4, characterized in that: The inner surface of the left end of the gas equalizing pipe (3) is provided with a gas collecting annular groove (305), and the left end inside the gas collecting annular groove (305) is provided with a guide slope (307), and the inclination angle of the guide slope (307) is between 3° and 45°.

6. The locking bucket slag discharge device with alarm function according to claim 5, characterized in that: An air distribution hole (304) is provided between the air collecting annular groove (305) and the dispersing annular groove (308). There are a plurality of air distribution holes (304), and the angles between two adjacent air distribution holes (304) are equal.

7. The locking bucket slag discharge device with alarm function according to claim 6, characterized in that: An exhaust ring groove (306) is provided between the gas collecting ring groove (305) and the left side of the gas equalizing pipe (3), and the exhaust ring groove (306) is a conical structure that converges inwards.

8. The locking bucket slag discharge device with alarm function according to claim 1, characterized in that: A flow control valve (303) is provided at the upper end of the compressed air delivery pipe (202).

9. The locking bucket slag discharge device with alarm function according to claim 1, characterized in that: The outer side of the radio frequency admittance level meter body (4) is coated with a self-cleaning coating (401), and the self-cleaning coating (401) is a YC-8703 hydrophobic self-cleaning nano-composite ceramic coating.

10. The locking bucket slag discharge device with alarm function according to claim 1, characterized in that: The connecting hole (101) is installed at an angle of 18°-22° to the horizontal plane of the lock bucket body (1).

Images