A biomass gasification feeding pipeline blockage treatment system and control method thereof

Abstract

The present application belongs to the technical field of biomass gasification, and discloses a biomass gasification feeding pipeline blockage processing system and a control method thereof, including a silo, a gasifier, a feeding pipeline, an air pressure sensor, a central processing unit, a feeding mechanism, a main pressurized pipeline, an air source device and an auxiliary pressurized pipeline, wherein the feeding pipeline is arranged between the silo and the gasifier, the air pressure sensor is arranged at the end of the main pressurized pipeline, the air pressure sensor can detect the air pressure in the main pressurized pipeline in real time, and transmit the air pressure data to the central processing unit in real time, the feeding mechanism includes a variable frequency motor and a screw feeder, the screw feeder is arranged at the feeding end of the feeding pipeline, the variable frequency motor drives the screw feeder to rotate to transport biomass material into the feeding pipeline, the variable frequency motor is provided with a motor controller, the motor controller is communicated with the central processing unit, and the material blockage problem is automatically solved.

Description

Technical Field

[0001] The invention relates to the technical field of biomass gasification, and in particular to a biomass gasification feeding pipeline blockage processing system and a control method thereof. Background Art

[0002] As a kind of renewable energy, biomass materials are increasingly favored by energy, chemical industry and agriculture. In the energy field, biomass can be transformed into a variety of bioenergy such as biodiesel, bioethanol and biogas after conversion, adding new options for energy supply; in the chemical industry, biomass becomes a valuable raw material for the production of environmentally friendly products such as bio-based plastics and bio-based chemicals; and in the agricultural field, it is an ideal choice for soil improvement and organic fertilizer preparation. The full utilization of biomass is undoubtedly of far-reaching significance for promoting energy diversification, strengthening environmental protection and promoting sustainable development.

[0003] Biomass gasification, as a high-tech technology that converts biomass into combustible gas fuel, is gradually showing its huge application potential. Through a series of complex thermochemical reactions, this technology can efficiently convert various biomass resources such as wood, straw, crop residues, and urban garbage into biomass gas containing components such as carbon monoxide, hydrogen and methane. These gases can not only be used for power generation and heating, but also meet the energy needs of industrial production and other fields.

[0004] During the biomass gasification process, the biomass materials need to be transported from the silo to the gasifier through a feeding pipe. However, the feeding pipe is often not arranged in a straight line, but has various complex spatial arrangements such as turns, rises, and declines. For example, in order to avoid buildings or special objects, blockages are often prone to occur at turning and descending positions. Conventional technical means cannot automatically solve the problem of material blockage, nor can they quickly determine the specific location of the blockage on the feeding pipe. It is necessary to manually find the location where the blockage occurs, and maintenance is time-consuming, labor-intensive and inefficient. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A biomass gasification feed pipe blockage treatment system, comprising a silo, a gasifier, a feed pipe, an air pressure sensor, a central processing unit, a feed mechanism, a main pressurized pipe, an air source device and an auxiliary pressurized pipe, wherein the feed pipe is arranged between the silo and the gasifier, the air pressure sensor is arranged at the end of the main pressurized pipe, the air pressure sensor can detect the air pressure in the main pressurized pipe in real time, and transmit the air pressure data to the central processing unit in real time;

[0007] The feeding mechanism includes a variable frequency motor and a screw feeder, the screw feeder is arranged at the feeding end of the feeding pipe, the variable frequency motor drives the screw feeder to rotate to transport the biomass material into the feeding pipe, the variable frequency motor is provided with a motor controller, and the motor controller is communicatively connected with the central processing unit;

[0008] An air inlet is also provided at the end of the feeding pipeline. One end of the main pressurized pipeline is connected to the air source device, and the other end is provided with a pressurized pipeline air outlet. The main pressurized pipeline can blow high-pressure gas into the feeding pipeline through the air inlet. The air source device also includes an air source sensing valve, and the air source sensing valve is communicatively connected to the central processor.

[0009] The feeding pipeline is provided with a plurality of air supply ports, and a plurality of auxiliary pressurization branch pipelines are provided between the auxiliary pressurization pipeline and the air supply ports. The plurality of auxiliary pressurization branch pipelines are connected to the plurality of air supply ports one-to-one. Each auxiliary pressurization branch pipeline is provided with an air supply sensing valve. When the air supply sensing valve is opened, the high-pressure gas in the auxiliary pressurization pipeline can be transported to the feeding pipeline. The air supply sensing valve is communicatively connected to the central processing unit.

[0010] Furthermore, it also includes an impact detection device, several of which are arranged on the feeding pipe, and the impact detection device includes a motor, a transmission mechanism, an impact hammer and a sound sensor. The motor is connected to the impact hammer through the transmission mechanism, and the sound sensor can transmit the sound frequency of the impact hammer hitting the feeding pipe to the central processor in real time. The central processor also includes a display screen. The central processor can determine the specific position of the blockage point according to the knocking sound frequency, and display the specific position of the blockage point through the display screen.

[0011] Furthermore, the impact detection device is also provided with an induction switch, and the induction switch is communicatively connected with the central processing unit.

[0012] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0013] Step 1: The air pressure sensor detects an increase in air pressure in the main pressurized pipeline;

[0014] Step 2: The air pressure sensor transmits the air pressure data to the central processing unit;

[0015] Step 3: The central processing unit sends instructions to the motor controller, so that the speed of the variable frequency motor is gradually reduced until it stops.

[0016] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0017] Step 1: The air pressure sensor detects an increase in air pressure in the main pressurized pipeline;

[0018] Step 2: The air pressure sensor transmits the air pressure data to the central processing unit;

[0019] Step three: the central processing unit sends an instruction to the gas source sensing valve, causing the gas source sensing valve to increase the opening amount.

[0020] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0021] Step 1: The air pressure sensor detects an increase in air pressure in the main pressurized pipeline;

[0022] Step 2: The air pressure sensor transmits the air pressure data to the central processing unit;

[0023] Step three: the central processing unit sends a command to the air supply sensing valve, and the air supply sensing valve opens, so that the high-pressure gas in the auxiliary pressurizing pipeline is transported to the feeding pipeline.

[0024] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0025] Step 1: The air pressure sensor detects an increase in air pressure in the main pressurized pipeline;

[0026] Step 2: The air pressure sensor transmits the air pressure data to the central processing unit;

[0027] Step 3: The central processing unit sends a command to the impact detection device, so that the impact detection device starts working;

[0028] Step 4: The sound sensor transmits the sound frequency of the impact hammer hitting the feeding pipe to the central processor in real time;

[0029] Step 5: The central processor determines the specific location of the blockage point according to the knocking sound frequency;

[0030] Step 6: Displaying the specific location of the blocking point on the display screen;

[0031] Step 7: Maintenance personnel manually remove and clean the blocked part of the feeding pipe.

[0032] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0033] Step 1: The air pressure sensor monitors the air pressure in the main pressurized pipeline in real time, and transmits the air pressure data to the central processor in real time;

[0034] Step 2: The central processor determines the level of the blockage of the feeding pipeline. When the air pressure sensor displays 200KPa, it is a first-level blockage; when the air pressure sensor displays 350KPa, it is a second-level blockage; when the air pressure sensor displays 500KPa, it is a third-level blockage; when the air pressure sensor displays 600KPa, it is a fourth-level blockage;

[0035] Step 3: When the feeding pipeline is in the first level of blockage, the central processing unit sends a command to the motor controller to gradually reduce the motor speed until it stops;

[0036] When the feeding pipeline is in the secondary blockage, the central processor sends a command to the motor controller to gradually reduce the motor speed until it stops. At the same time, the central processor sends a command to the air source sensing valve to increase the opening amount of the air source sensing valve.

[0037] When the feeding pipeline is in the third level of blockage, the central processor sends a command to the motor controller to gradually reduce the motor speed until it stops. At the same time, the central processor sends a command to the gas source sensing valve to increase the opening amount of the gas source sensing valve. At the same time, the central processor sends a command to the gas supplement sensing valve to open the gas supplement sensing valve, so that the high-pressure gas in the auxiliary pressurized pipeline is transported to the feeding pipeline;

[0038] When the feeding pipe is in the fourth level of blockage, the central processing unit sends an instruction to the impact detection device, so that the impact detection device starts working, and the sound sensor transmits the sound frequency of the impact hammer hitting the feeding pipe to the central processing unit in real time. The central processing unit determines the specific location of the blockage point according to the knocking sound frequency, and displays the specific location of the blockage point through the display screen. The maintenance personnel manually remove and clean the blockage in the feeding pipe.

[0039] Compared with the prior art, the biomass gasification feed pipeline blockage treatment system and control method thereof have the following beneficial effects:

[0040] By setting an air pressure sensor on the main pressurized pipeline as a sensing element to monitor whether there is blockage in the feeding pipeline, the air pressure sensor can transmit the air pressure data in the main pressurized pipeline to the central processor in real time, and the central processor controls the motor speed for adaptive adjustment;

[0041] By connecting the central processor with the sensing valve for communication, the air pressure sensor transmits the air pressure data to the central processor, and the central processor controls the air source sensing valve to perform adaptive adjustment, thereby automatically adjusting the opening and closing degree of the air source sensing valve according to the air pressure in the main pressurized pipeline;

[0042] By setting up an auxiliary pressurized pipeline and an air supply port on the feeding pipeline, the air pressure data in the main pressurized pipeline is transmitted to the central processor according to the air pressure sensor. The central processor controls the air supply sensing valve and automatically opens the air supply sensing valve to supply air to the feeding pipeline.

[0043] The above method can automatically handle the blockage problem of the feeding pipeline without manual intervention, saving labor costs and high processing efficiency;

[0044] By setting up an impact detection device on the feeding pipeline and transmitting the impact sound frequency to the central processor, the central processor can locate the position of the blockage point through the difference in sound frequency and project it onto the display screen. Maintenance personnel can quickly perform maintenance, disassembly and cleaning operations. It has the advantages of fast triggering, automatic and fast positioning of the blockage point, and rapid maintenance.

[0045] By setting a graded processing strategy and adopting different control strategies at different congestion levels, the congestion problem can be solved conveniently, quickly and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0048] Figure 1 It is a schematic diagram of the overall structure of the biomass gasification device of the present invention;

[0049] Figure 2 This is a front view of the biomass gasification device of the present invention;

[0050] Figure 3 It is a left view of the biomass gasification device of the present invention;

[0051] Figure 4 It is a top view of the biomass gasification device of the present invention;

[0052] Figure 5This is a schematic diagram of the structure of the screw feeder of the biomass gasification device of the present invention;

[0053] In the figure: 1 silo, 11 feed port, 12 discharge port, 2 gasifier, 3 feeding pipeline, 31 air inlet, 32 air supply port, 33 feeding end, 4 feeding mechanism, 41 frequency conversion motor, 42 screw feeder, 5 main pressurizing pipeline, 51 air pressure gauge, 52 air pressure sensor, 6 air source device, 61 air storage tank, 62 air source sensing valve, 7 auxiliary pressurizing pipeline, 71 auxiliary pressurizing branch pipeline, 8 air supply sensing valve, 9 impact detection device. DETAILED DESCRIPTION

[0054] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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 creative work are within the scope of protection of the present invention.

[0055] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0056] Embodiment 1

[0057] A biomass gasification feed pipeline blockage treatment system, see Figure 1-3 , including a silo 1, a gasifier 2, a feeding pipe 3, an air pressure sensor 52, a central processing unit, a feeding mechanism 4, a main pressurized pipe 5, a gas source device 6 and an auxiliary pressurized pipe 7. The feeding pipe 3 is arranged between the silo 1 and the gasifier 2. The main pressurized pipe 5 can convey high-pressure gas to the feeding pipe 3 to push the biomass material forward. The air pressure sensor 52 is arranged at the end of the main pressurized pipe 5. Once congestion occurs, the main pressurized pipe 5 will encounter resistance when conveying high-pressure gas to the feeding pipe 3, and the pressure in the main pressurized pipe 5 will increase accordingly. The air pressure sensor 52 is a pressure transmitter that can detect the air pressure in the main pressurized pipe 5 in real time and transmit the air pressure data to the central processing unit in real time.

[0058] When feeding the biomass gasifier 2, a silo 1 can be set on the feed port, and the discharge port of the silo 1 is connected to the screw feeder 4. The biomass gasifier controls the rotation of the screw feeder 4 through the variable frequency motor 4 to transport the biomass raw materials from the feed port 11 to the discharge port 12. The discharge port 12 is connected to the feeding pipe 3 of the gasifier 2, so that the granular biomass raw materials can be continuously and stably blown into the biomass gasifier 2.

[0059] The main pressure pipe 5 is also provided with a pressure gauge 51, see Figure 3 , which makes it convenient for operators to observe the changes in the main pressurized pipeline 5 from the outside, and to determine whether there is a blockage by detecting the increase in air pressure in the main pressurized pipeline 5. Once a blockage occurs, the reading of the barometer 51 will increase. At the same time, the air pressure sensor 52 can transmit the air pressure data in the main pressurized pipeline 5 to the central processing unit. The central processing unit is a PLC controller. The central processing unit is connected to the control panel. The control panel is provided with a display screen. The pressure curve of the air pressure in the main pressurized pipeline 5 can be displayed on the display screen in real time, thereby realizing real-time monitoring of the pressure situation in the main pressurized pipeline 5. When the air pressure data reaches a certain threshold, the system also has an alarm function.

[0060] The feeding mechanism 4 includes a variable frequency motor 41 and a screw feeder 42. Figure 5 , a screw feeder 42 is arranged below the silo 1, and the screw feeder 42 is arranged at the feeding end 33 of the feeding pipe 3. The variable frequency motor 41 drives the screw feeder 42 to rotate to transport the biomass material into the feeding pipe 3. The variable frequency motor 41 is provided with a motor controller, and the motor controller can control the speed of the variable frequency motor 41. The motor controller is connected to the central processing unit for communication, and the central processing unit controls the speed of the variable frequency motor 4 by controlling the motor controller;

[0061] The system can adjust the speed of the variable frequency motor 4 in real time according to the pressure conditions in the main pressurized pipeline 5. If the air pressure in the main pressurized pipeline 5 continues to increase, it means that the material in the feeding pipeline 3 is in a state of continuous congestion. The central processing unit receives the signal from the pressure sensor and automatically controls the variable frequency motor 4 to continuously reduce the speed until it stops. If the air pressure in the main pressurized pipeline 5 first increases and then decreases, the central processing unit controls the speed of the variable frequency motor 4 to first decrease and then increase. That is, the system has an adaptive feedback function, which can realize complete automation of the entire process from discovering signs of blockage to dealing with the blockage, without the need for manual intervention throughout the process, which greatly improves the efficiency of maintenance and saves labor costs.

[0062] The following is a specific operation method for processing the blockage of the feed pipe 3 through the scheme, a control method for processing the blockage of the biomass gasification feed pipe, comprising the following steps:

[0063] Step 1: The air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 increases;

[0064] Step 2: The air pressure sensor 52 transmits the air pressure data to the central processing unit;

[0065] Step 3: The central processing unit sends instructions to the motor controller, so that the speed of the variable frequency motor 4 is gradually reduced until it stops.

[0066] Embodiment 2

[0067] The end of the feeding pipe 3 is also provided with an air inlet 31, see Figure 3 One end of the main pressurized pipeline 5 is connected to the gas source device 6, and the other end is provided with a pressurized pipeline outlet. The main pressurized pipeline 5 can blow high-pressure gas into the feeding pipeline 3 through the gas inlet 31. The gas source device 6 also includes a gas source sensing valve 62, and the gas source sensing valve 62 is communicatively connected to the central processor;

[0068] The air source device 6 includes an air compressor and an air storage tank 61. The air source sensing valve 62 is arranged on the air storage tank 61. Figure 2 The air compressor injects high-pressure gas into the gas storage tank 61. The gas storage tank 61 has the function of stabilizing and filtering the gas. The high-pressure gas in the gas storage tank 61 is transported to the feeding pipe 3 through the pressurized pipe 5. The central processor can control the opening and closing degree of the gas source sensing valve 62. The sensing valve 62 is arranged downstream of the gas storage tank 61. The opening and closing degree of the sensing valve 62 is determined according to the pressure in the main pressurized pipe 5. When a blockage occurs, the increase in the air pressure in the main pressurized pipe 5 can automatically trigger the gas source sensing valve 62 to increase the opening and closing degree, thereby increasing the high-pressure gas. After the blocked material is cleared, when the air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 is in a normal state, the air pressure sensor 52 transmits the air pressure data at this time to the central processor, and the central processor controls the air source sensing valve 62 to reduce the opening and closing degree to a normal range, and finally the air source sensing valve 62 can be adjusted in real time according to the air pressure data, that is, the whole process of identifying the blockage, handling the blockage and finally restoring the normal feeding state is automated. The following is a specific operation method for handling the blockage of the feeding pipeline 3 using this solution:

[0069] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0070] Step 1: The air pressure sensor 52 detects that the air pressure in the main pressurized pipe 5 increases;

[0071] Step 2: The air pressure sensor 52 transmits the air pressure data to the central processing unit;

[0072] Step 3: The central processing unit sends an instruction to the gas source sensing valve 62, so that the gas source sensing valve 62 increases the opening amount.

[0073] Embodiment 3

[0074] The feeding pipe 3 is provided with a plurality of air supply ports 32, see Figure 4An auxiliary pressurizing pipe 7 is arranged around the feeding pipe 3, and a plurality of auxiliary pressurizing branch pipes 71 are arranged between the auxiliary pressurizing pipe 7 and the gas supply port 32. The plurality of auxiliary pressurizing branch pipes 71 are connected to the plurality of gas supply ports 32 in a one-to-one correspondence. An air supply sensing valve 8 is arranged on each auxiliary pressurizing branch pipe 71. When the air supply sensing valve 8 is opened, the high-pressure gas in the auxiliary pressurizing pipe 7 can be transported to the feeding pipe 3. The air supply sensing valve 8 is communicatively connected to the central processing unit.

[0075] The auxiliary pressurized pipeline 7 and the main pressurized pipeline 5 can share a gas source device. The auxiliary pressurized pipeline 7 branches out from the downstream of the gas storage tank 61 of the gas source device. The air inlet 32 ​​is generally set at the downhill, turning and other locations of the feeding pipeline 3 where blockage is prone to occur. An air inlet 32 ​​can also be set at a certain distance in the feeding pipeline 3. If a more serious blockage occurs, the high-pressure gas of the auxiliary pressurized pipeline 7 is transported from the air inlet 32 ​​to the feeding pipeline 3, which can clear the blocked biomass material.

[0076] The system can set a threshold value. When it senses that the air pressure in the main pressurized pipeline 5 has risen to the threshold value, the air pressure sensor 52 sends a signal to the central processor, and the central processor sends an instruction to the air supply sensing valve and opens the air supply sensing valve 8. The auxiliary pressurized pipeline 7 passes through the auxiliary pressurized branch pipeline 71 and then through the air supply sensing valve 8, and finally passes high-pressure gas into the feeding pipeline 3 through the air supply port 32, thereby unblocking the blocked biomass material. When the air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 has returned to the normal air pressure range, the air pressure sensor 52 sends a signal to the central controller, and the central controller sends an instruction to the air supply sensing valve and closes it, that is, the air pressure sensor 52 can automatically trigger the opening or closing of the air supply sensing valve, and finally can realize the full-process automated processing strategy of identifying blockages, handling blockages, and automatic air supply. The following is the specific control method of this solution:

[0077] A control method for a biomass gasification feed pipeline blockage treatment system comprises the following steps:

[0078] Step 1: The air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 increases;

[0079] Step 2: The air pressure sensor 52 transmits the air pressure data to the central processing unit;

[0080] Step three: the central processing unit sends a command to the air supply sensing valve 8 , and the air supply sensing valve 8 opens, so that the high-pressure gas in the auxiliary pressurizing pipeline 7 is transported to the feeding pipeline 3 .

[0081] Embodiment 4

[0082] Also includes a collision detection device 9, see Figure 1 , several impact detection devices 9 are arranged on the feeding pipe 3, and the impact detection device 9 includes a motor, a transmission mechanism, a hammer and a sound sensor. The motor is connected to the hammer through the transmission mechanism. The sound sensor can transmit the sound frequency of the hammer hitting the feeding pipe 3 to the central processor in real time. The central processor also includes a display screen. The central processor can determine the specific position of the blockage point according to the knocking sound frequency, and display the specific position of the blockage point through the display screen.

[0083] The several automatic control methods described in the first to third embodiments still cannot solve the blockage situation, indicating that a nearly dead situation has already existed somewhere in the feeding pipeline 3. For example, materials such as quicklime have high viscosity and are prone to blockage. Generally, the location where blockage is prone to occur is at the turning point of the pipeline and the descending point of the pipeline. The sound sensor can record the sound frequency at various locations and send it to the central processor. The central processor compares according to the sound frequency. Since the inside of the blocked part of the feeding pipeline 3 is solid, under the same knocking force, the knocking sound at the blocked part is more dull, and the knocking sound at the unblocked part is more crisp. The central controller can analyze and quickly find and determine the blockage point according to the knocking sound frequency, and display it on the display screen. Since the feeding pipeline 3 is composed of several small sections of pipelines fixedly connected, each small section of pipeline has a corresponding number. As long as a small section of pipeline corresponding to the blocked position is found, the display screen will display the position of the impact vibration device at various locations in the form of a number, so that the operator can quickly find the specific location where the blockage occurs, and can achieve rapid maintenance, disassembly and cleaning. In addition, since the impact force of the impact itself will also cause the blocked material to disperse, the vibration effect also has a dredging effect.

[0084] Furthermore, the impact detection device 9 is also provided with an induction switch, and the induction switch is communicatively connected with the central processing unit.

[0085] The air pressure sensor 52 detects the increase in air pressure in the main pressurized pipeline 5, and the air pressure sensor 52 sends a signal to the central processing unit. The central processing unit sends an instruction to the induction switch of the impact detection device 9 and turns it on. That is, the induction switch is automatically triggered by the air pressure in the main pressurized pipeline 5. When the induction switch is turned on, the impact detection device 9 starts to knock on the feeding pipeline 3.

[0086] The system is also provided with a switch button for turning on and off the impact detection device 9. The switch button and the induction switch are set in series. After confirming the blockage position and before the maintenance and cleaning are completed, the maintenance personnel can manually turn off the impact detection device 9 through the switch button, and turn on the button switch after the maintenance and cleaning are completed. The following is the specific control method of the scheme:

[0087] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0088] Step 1: The air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 increases;

[0089] Step 2: The air pressure sensor 52 transmits the air pressure data to the central processing unit;

[0090] Step 3: The central processing unit sends an instruction to the collision detection device 9, so that the collision detection device 9 starts working;

[0091] Step 4: The sound sensor transmits the sound frequency of the impact hammer hitting the feeding pipe 3 to the central processor in real time;

[0092] Step 5: The central processor determines the specific location of the blockage point according to the knocking sound frequency;

[0093] Step 6: Displaying the specific location of the blocking point on the display screen;

[0094] Step 7: Maintenance personnel manually remove and clean the blocked part of the feeding pipe 3.

[0095] Embodiment 5

[0096] A control method for a biomass gasification feeding pipeline blockage treatment system comprises the following steps:

[0097] Step 1: The air pressure sensor 52 monitors the air pressure in the main pressurized pipe 5 in real time, and transmits the air pressure data to the central processor in real time;

[0098] Step 2: The central processor determines the blockage level of the feeding pipeline 3. When the air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 is greater than 200KPa, it is a first-level blockage. When the air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 is greater than 350KPa, it is a second-level blockage. When the air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 is greater than 500KPa, it is a third-level blockage. When the air pressure sensor 52 detects that the air pressure in the main pressurized pipeline 5 is greater than 600KPa, it is a fourth-level blockage. The normal value of the air pressure in the main pressurized pipeline 5 is 100-150KPa.

[0099] Step 3: When the feeding pipe 3 is in the first-level blockage, the central processing unit automatically sends a command to the motor controller of the variable frequency motor 41, so that the motor speed is gradually reduced until it stops;

[0100] When the feeding pipe 3 is in the secondary blockage, the central processor automatically sends a command to the motor controller of the variable frequency motor 41, so that the motor speed is gradually reduced until it stops. At the same time, the central processor sends a command to the air source sensing valve, so that the air source sensing valve increases the opening amount;

[0101] When the feeding pipeline 3 is in the third level of blockage, the central processor automatically sends a command to the motor controller of the variable frequency motor 41, so that the motor speed is gradually reduced until it stops. At the same time, the central processor sends a command to the gas source sensing valve 62, so that the gas source sensing valve 62 increases the opening amount. At the same time, the central processor sends a command to the air supply sensing valve 8 to open the air supply sensing valve 8, so that the high-pressure gas in the auxiliary pressurized pipeline 7 is delivered to the feeding pipeline 3;

[0102] When the feeding pipe 3 is in the fourth level of blockage, the central processing unit sends an instruction to the impact detection device 9, so that the impact detection device 9 starts working, and the sound sensor transmits the sound frequency of the impact hammer hitting the feeding pipe 3 to the central processing unit in real time. The central processing unit determines the specific position of the blockage point according to the knocking sound frequency, and displays the specific position of the blockage point through the display screen. The maintenance personnel manually removes and cleans the blockage of the feeding pipe 3. The impact detection device 9 is used when the maximum threshold value of the air pressure is exceeded. When it is identified that the feeding pipe 3 is in the fourth level of blockage, the vibration impact detection device 9 is started. At this time, the key is to find a way to automatically and quickly identify the blockage point and then perform manual maintenance, saving maintenance time and improving fault repair efficiency.

[0103] This embodiment aims to solve the problem of blockage of different levels in the feeding pipeline 3 without manual intervention, and the blockage problem can be solved automatically by the control system. In the case of severe blockage or even blockage, even if the screw feeder 42 stops running, the high-pressure gas driving force is increased and the air supply device is turned on, the material is difficult to continue to move and the blockage is still difficult to clear. At this time, the impact detection device can quickly find the blockage position, and the maintenance personnel can dismantle and clean the pipeline at that position after confirming the specific position of the blockage.

[0104] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A biomass gasification feed pipeline blockage treatment system, characterized in that: It includes a silo, a gasifier, a feeding pipeline, an air pressure sensor, a central processing unit, a feeding mechanism, a main pressurizing pipeline, an air source device and an auxiliary pressurizing pipeline. The feeding pipeline is arranged between the silo and the gasifier, and the air pressure sensor is arranged at the end of the main pressurizing pipeline. The air pressure sensor can detect the air pressure in the main pressurizing pipeline in real time and transmit the air pressure data to the central processing unit in real time; The feeding mechanism includes a variable frequency motor and a screw feeder, the screw feeder is arranged at the feeding end of the feeding pipe, the variable frequency motor drives the screw feeder to rotate to transport the biomass material into the feeding pipe, the variable frequency motor is provided with a motor controller, and the motor controller is communicatively connected with the central processing unit; An air inlet is also provided at the end of the feeding pipeline. One end of the main pressurized pipeline is connected to the air source device, and the other end is provided with a pressurized pipeline air outlet. The main pressurized pipeline can blow high-pressure gas into the feeding pipeline through the air inlet. The air source device also includes an air source sensing valve, and the air source sensing valve is communicatively connected to the central processor. The feeding pipeline is provided with a plurality of air supply ports, a plurality of auxiliary pressurizing branch pipelines are provided between the auxiliary pressurizing pipeline and the air supply ports, the plurality of auxiliary pressurizing branch pipelines are connected to the plurality of air supply ports one by one, each auxiliary pressurizing branch pipeline is provided with an air supply sensing valve, the opening of the air supply sensing valve enables the high-pressure gas in the auxiliary pressurizing pipeline to be transported to the feeding pipeline, and the air supply sensing valve is communicatively connected to the central processor; It also includes a collision detection device, a plurality of the collision detection devices are arranged on the feeding pipe, the collision detection device includes a collision hammer and a sound sensor, the central processor also includes a display screen, the feeding pipe includes a plurality of small pipe sections connected to each other, each of the small pipe sections has a corresponding number, and the display screen can display the number corresponding to the small pipe section where the blockage position is located; The control method of the biomass gasification feeding pipeline blockage treatment system comprises the following steps: Step 1: The air pressure sensor monitors the air pressure in the main pressurized pipeline in real time, and transmits the air pressure data to the central processor in real time; Step 2: The central processor determines the level of the blockage of the feeding pipeline. When the air pressure sensor displays 200KPa, it is a first-level blockage; when the air pressure sensor displays 350KPa, it is a second-level blockage; when the air pressure sensor displays 500KPa, it is a third-level blockage; when the air pressure sensor displays 600KPa, it is a fourth-level blockage; Step 3: When the feeding pipeline is in the first level of blockage, the central processing unit sends a command to the motor controller to gradually reduce the motor speed until it stops; When the feeding pipeline is in the secondary blockage, the central processor sends a command to the motor controller to gradually reduce the motor speed until it stops. At the same time, the central processor sends a command to the air source sensing valve to increase the opening amount of the air source sensing valve. When the feeding pipeline is in the third level of blockage, the central processor sends a command to the motor controller to gradually reduce the motor speed until it stops. At the same time, the central processor sends a command to the gas source sensing valve to increase the opening amount of the gas source sensing valve. At the same time, the central processor sends a command to the gas supplement sensing valve to open the gas supplement sensing valve, so that the high-pressure gas in the auxiliary pressurized pipeline is transported to the feeding pipeline; When the feeding pipe is in the fourth level of blockage, the central processing unit sends an instruction to the impact detection device, so that the impact detection device starts working, and the sound sensor transmits the sound frequency of the impact hammer hitting the feeding pipe to the central processing unit in real time. The central processing unit determines the specific location of the blockage point according to the knocking sound frequency, and displays the specific location of the blockage point through the display screen. The maintenance personnel manually remove and clean the blockage in the feeding pipe.

2. The biomass gasification feed pipeline blockage treatment system according to claim 1, characterized in that: The impact detection device also includes a motor and a transmission mechanism, and the motor is connected to the impact hammer through the transmission mechanism.

3. The biomass gasification feed pipeline blockage treatment system according to claim 2, characterized in that: The impact detection device is also provided with an induction switch, and the induction switch is communicatively connected with the central processing unit.

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