Full-automatic pressure-stabilizing ash discharging system and control method thereof

Abstract

The invention relates to the technical field of well cementation equipment, in particular to a full-automatic stable-pressure cement discharging system and a control method thereof. Through the mutual matching design of the pressure stabilizing assembly and the air source system and in combination with the PLC control system, automatic control over electronic elements such as various valves is achieved, the pressure, the gas-solid ratio, the ash supply amount and the like of the pressure stabilizing bag can be effectively controlled, the water-cement ratio in the mortar mixing process is more effectively controlled, and the mortar mixing efficiency is improved. And the problem of ash breaking caused by improper manual operation is avoided. According to the invention, the automation of well cementation cement supply is realized, and the manual operation is reduced to the greatest extent; the cement discharging stability is improved, the stable slurry forming effect is ensured, and a guarantee is provided for deep well mining; the intelligent level of equipment is improved, the working state and the material level are visualized, and a basis is provided for visual management; the adaptability and reliability of the device are enhanced, and operation safety is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cementing equipment, and in particular to a full-automatic pressure-stabilizing ash discharging system and a control method thereof. Background Art

[0002] At present, cementing operations usually place different numbers of 24m 3 Car-back tank, the construction team reserves cement in advance according to the operation tasks. Before the operation begins, the ash outlet of the ash tank is connected to the ash inlet of the cement truck. The cement truck is equipped with two ash inlets, which can be connected to two ash pipelines at the same time. During the operation, continuous ash supply is achieved by controlling the pneumatic valve of the cement truck inlet and the manual valve of the ash outlet of the ash tank. However, the ash supply speed of the ash tank is easily affected by various factors such as the conveying distance, the pressure in the tank and the material level, resulting in fluctuations in the ash supply. When the material level is lowered, the gas-solid ratio increases due to the looseness of the material at the bottom of the discharge port, which leads to a gradual slowdown in the ash supply speed. This phenomenon makes the water-cement ratio control in the mixing process complicated, and the water valve and the ash inlet valve of the cement truck need to be continuously adjusted. If the operation is not careful or the ash tank is not switched in time, it may also cause ash breakage problems. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and propose a fully automatic pressure-stabilizing ash unloading system and a control method thereof, which can automatically control the operation of the pressure-stabilizing tank and effectively control the pressure of the pressure-stabilizing bag.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A fully automatic voltage-stabilizing ash discharging control method, comprising:

[0006] The pressure stabilizing tank and the bulk material tank are each equipped with a control box, the control box is equipped with a PLC control system, a power cable interface and a communication cable interface, and the control box and the PLC control system are connected to the host computer;

[0007] Enter the minimum material weight W of the bulk tank in the upper computer control interface. bsp , set the minimum pressure value P in the bulk tank bsp0 , set the maximum pressure P in the bulk tank bsp1 , set the minimum material weight W of the surge tank wsp , set the pressure value P in the pressure-stabilizing tank wsp , set bulk tank content value Q b , issue automatic operation instructions to the PLC control system;

[0008] The valve status, pressure, material weight and other data information of the pressure regulating tank and bulk tank can be transmitted to the control box and the host computer. The control box adopts remote / local operation mode. When in the local operation mode, it can control the switch of each valve and the instrument data reading on the spot. In the remote operation mode, it can receive the signal of the host computer master control system, and the remote host computer can control the switch of the valve and the instrument data reading;

[0009] When the control box or upper computer control system sends a discharge signal, the material is automatically discharged in sequence according to the bulk tank equipment number. When a bulk tank is about to be empty, it automatically switches to the next bulk tank to continue conveying ash;

[0010] After the ash conveying is completed, calculate the weight of bulk materials used in this operation.

[0011] The present invention also provides another technical solution:

[0012] A fully automatic voltage-stabilizing ash discharging system is used to implement the fully automatic voltage-stabilizing ash discharging control method, and the system comprises:

[0013] The tank body is provided with legs at the bottom, a weighing assembly is provided at the bottom of the legs, a feed pipe is provided at one side of the tank body, and a plurality of tank body feed valves are provided on the feed pipe;

[0014] The pressure stabilizing assembly comprises a pressure stabilizing package, an upper cover is provided on the upper part of the pressure stabilizing package; the upper cover is provided with a pressure stabilizing gas source inlet; a bypass pipe is provided on the pressure stabilizing package, the bypass pipe is connected to the straight-discharge pipe, and the straight-discharge pipe is connected to the tank body; a bypass valve is provided at the lower end of the pressure stabilizing package, and a total drain valve and a straight-discharge valve are provided on the straight-discharge pipe at the front and rear positions of the bypass pipe respectively;

[0015] The gas source system comprises a gas distribution bag, on which an external air inlet valve, a pressure-stabilizing air source air inlet valve, a line-sweeping valve and a tank air inlet valve are arranged; the line-sweeping valve is connected to the straight-discharge pipe; the tank air inlet valve is connected to the tank body; the pressure-stabilizing air source air inlet valve led out of the gas distribution bag is connected to an electric proportional valve and an electric-controlled air path reversing valve in turn through a pressure-stabilizing air source air circuit, and then connected to a pressure-stabilizing air source inlet at the upper end of the pressure-stabilizing bag; a control signal cable for controlling the opening of the electric proportional valve is arranged at the upper end of the electric proportional valve;

[0016] The discharge valve of the pressure-stabilizing tank is arranged on the discharge pipe on one side of the tank body;

[0017] A discharge valve is provided at the bottom of the tank body and is used to control the discharge;

[0018] Bulk material tanks, each of which is connected to a corresponding tank feed valve on a feed pipe;

[0019] The control box is connected with the valves, control signal cables and weighing components of the pressure-stabilizing tank. The valves of the pressure-stabilizing tank include a tank feed valve, a pressure-stabilizing tank discharge valve, a discharge valve, a bypass valve, a total drain valve and a direct discharge valve, an external air intake valve, a pressure-stabilizing air source air intake valve, a sweeping valve, a tank air intake valve, an electrical proportional valve, an electrically controlled air circuit reversing valve, a discharge valve and other valves, which are automatically controlled by a PLC.

[0020] Furthermore, the control box includes a PLC and a box body, and the box body is provided with a power supply interface and a network cable interface connected to the PLC, a transmission cable interface and a valve cable connection port.

[0021] Furthermore, a pressure reducing valve connected to the PLC is provided between the tank air inlet valve and the air distribution bag.

[0022] Furthermore, a display screen is provided on the box body for displaying information such as the weight of the pressure-stabilizing tank.

[0023] Furthermore, the tank body includes a cylinder body, the upper part of the cylinder body is an elliptical head, the lower part of the cylinder body is a conical head, the lower part of the conical head is provided with supporting legs, and the bottom of the supporting legs is provided with a weighing assembly.

[0024] Furthermore, a safety valve and a pressure sensor connected to the PLC are provided on the elliptical head.

[0025] Furthermore, a base is provided at the bottom of the tank body.

[0026] Furthermore, the control box is installed on the tank base.

[0027] Technical effects of the present invention:

[0028] Compared with the prior art, the voltage stabilizing assembly and the gas source system of the present invention are designed to cooperate with each other, and combined with the PLC control system, the automatic control of various electronic components such as valves can be realized, and the pressure of the voltage stabilizing package, the gas-solid ratio and the ash supply can be effectively controlled, so that the water-cement ratio in the slurry mixing process can be more effectively controlled, and the problem of ash breaking caused by improper manual operation can be avoided. The present invention realizes the automation of cement ash supply for cementing, and minimizes manual operation; improves the stability of ash supply, ensures the stability of slurry formation, and provides a good guarantee for deep well mining; improves the intelligence level of equipment, and visualizes the working status and material level, providing a basis for visual management; enhances the adaptability and reliability of the device, and ensures the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of the fully automatic voltage-stabilized ash discharging system of the present invention;

[0030] Figure 2 This is a rear view of the fully automatic voltage-stabilized ash discharging system of the present invention;

[0031] Figure 3This is a front view of the fully automatic voltage-stabilized ash discharging system of the present invention;

[0032] Figure 4 It is a three-dimensional diagram of the control box of the present invention;

[0033] Figure 5 It is the front view of the control box of the present invention.

[0034] In the figure, 100, tank body; 200, pressure stabilizing assembly; 300, feed pipe; 400, gas source system; 500, control box; 600, discharge valve of pressure stabilizing tank; 700, discharge valve;

[0035] 101. Safety valve; 102. Inspection manhole; 103. Pressure sensor; 104. Weighing assembly; 105. Base; 106. Cylinder; 107. Elliptical head; 108. Conical head; 109. Legs;

[0036] 201, pressure stabilizing package; 202, upper cover; 203, pressure stabilizing gas source inlet; 204, bypass pipe; 205, main drain valve; 206, direct discharge valve; 207, bypass valve; 208, direct discharge pipe;

[0037] 301, 1# tank feed valve; 302, 2# tank feed valve; 303, 3# tank feed valve; 304, plugging cover;

[0038] 401, gas distribution bag; 402, external air inlet valve; 403, pressure-stabilized air source air inlet valve; 404, line sweeping valve; 405, pressure reducing valve; 406, tank air inlet valve; 4031, electric proportional valve; 4032, control signal cable; 4033, electric-controlled air circuit reversing valve;

[0039] 501, box body; 502, front window; 503, display screen; 504, network cable interface; 505, power interface; 506, 1# tank transmission cable interface; 507, 2# tank transmission cable interface; 508, 3# tank transmission cable interface; 509, pressure regulating tank discharge valve cable interface; 510, 1# tank feed valve cable interface; 511, 2# tank feed valve cable interface; 512, 3# tank feed valve cable interface; 513, emptying and sweeping valve cable interface; 514, tank air inlet valve cable interface; 515, bypass valve cable interface; 516, direct discharge valve cable interface; 517, total emptying valve cable interface; 518, 1# sensor cable interface; 519, 2# sensor cable interface; 520, 3# sensor cable interface; 521, pressure sensor cable interface; 522, electrical proportional valve cable interface; 523, discharge valve cable interface. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention is clearly and completely described below in conjunction with the accompanying drawings.

[0041] Embodiment 1:

[0042] like Figure 1 and 2 As shown, the present embodiment involves a fully automatic pressure-stabilizing ash unloading system, including a pressure-stabilizing tank body 100, a pressure-stabilizing component 200, a feed pipe 300, an air source system 400, a control box 500, a pressure-stabilizing tank discharge valve 600 and a discharge valve 700.

[0043] like Figure 3 As shown, the tank body 100 includes a cylinder body 106, the upper part of the cylinder body 106 is an elliptical head 107, the lower part is a conical head 108, the middle part of the cylinder body 106 is provided with an inspection manhole 102, the lower part of the conical head 108 is provided with a support leg 109, the bottom of the support leg 109 is provided with a weighing assembly 104, the bottom of the tank body 100 is provided with a base 105, and the elliptical head 107 is provided with a safety valve 101 and a pressure sensor 103.

[0044] like Figure 3 As shown, the pressure stabilizing assembly 200 includes a pressure stabilizing package 201, an upper cover 202 is provided on the upper part of the pressure stabilizing package 201, and the pressure stabilizing package 201 and the upper cover 202 are connected in a movable manner, preferably by a clamp connection; the upper cover 202 is provided with a pressure stabilizing gas source inlet 203; a bypass pipe 204 is provided on the pressure stabilizing package 201, the bypass pipe 204 is connected to the straight-discharge pipe 208, and the straight-discharge pipe 208 is connected to the conical head 108; a bypass valve 207 is provided at the lower end of the pressure stabilizing package 201, and a total drain valve 205 and a straight-discharge valve 206 are respectively provided on the straight-discharge pipe 208 at the front and rear positions of the bypass pipe 204.

[0045] like Figure 1 As shown, the feed pipe 300 is arranged on one side of the cylinder 106 , and a 1# tank feed valve 301 , a 2# tank feed valve 302 and a 3# tank feed valve 303 are provided on the feed pipe 300 , and a plug cover 304 is provided at the tail end of the feed pipe 300 .

[0046] like Figure 3As shown, the gas source system 400 includes a gas distribution package 401, and the gas distribution package 401 is provided with an external air inlet valve 402, a pressure-stabilizing air source air inlet valve 403, a sweep valve 404, a pressure reducing valve 405 and a tank air inlet valve 406. The sweeping valve 404 is connected to the straight pipe 208; the tank air inlet valve 406 is connected to the tank 100, and a pressure reducing valve 405 is also provided between the tank air inlet valve 406 and the gas distribution bag 401; the pressure-stabilizing gas source air inlet valve 403 drawn from the gas distribution bag 401 is connected to the pressure-stabilizing gas source inlet 203 at the upper end of the pressure-stabilizing bag 201 through the pressure-stabilizing gas source gas path, and then connected to the electric proportional valve 4031 and the electric control gas path reversing valve 4033; the upper end of the electric proportional valve 4031 is provided with a control signal cable 4032 for controlling the opening of the electric proportional valve 4031, and the control gas source pressure of the pressure-stabilizing bag 201 is set through the PID (Proportional Integral Derivative) control system. The electric control gas path reversing valve 4033 controls whether the pressure-stabilizing gas source gas path is connected or closed through the electric signal transmitted from the PLC. The pressure stabilizing package 201 can only work when the pressure stabilizing gas source circuit is connected. The pressure stabilizing gas source circuit is closed, the pressure stabilizing function of the pressure stabilizing package 201 is closed, and the gas in the exhaust pipe can be directly exhausted through the straight exhaust pipe 208 and the main exhaust valve 205.

[0047] like Figure 2 As shown, the pressure-stabilizing tank discharge valve 600 is arranged on the discharge pipe on one side of the conical head 108 of the tank body 100. The discharge valve 700 is arranged at the bottom of the tank body 100 for controlling the discharge.

[0048] like Figure 1 As shown, the control box 500 is installed on the base 105, and the PLC is placed in the control box 500. Figure 4 and Figure 5As shown, the control box 500 includes a box body 501, a front window 502 is provided on the front side of the box body 501, and a weight display screen 503 capable of displaying the weight of the pressure-stabilizing tank is provided in the front window 502; an external power supply interface 505 and a network cable interface 504 are provided on the side of the box body 501, and signal and power transmission cable interfaces of three matching bulk tanks are also provided, namely, a 1# tank transmission cable interface 506, a 2# tank transmission cable interface 507, and a 3# tank transmission cable interface 508; a plurality of cable connection ports are provided on the lower side of the box body 501, including a pressure-stabilizing tank discharge port .... Valve cable interface 509, 1# tank feed valve cable interface 510, 2# tank feed valve cable interface 511, 3# tank feed valve cable interface 512, emptying and sweeping valve cable interface 513, tank air intake valve cable interface 514, bypass valve cable interface 515, direct discharge valve cable interface 516, total emptying valve cable interface 517, 1# sensor cable interface 518, 2# sensor cable interface 519, 3# sensor cable interface 520, pressure sensor cable interface 521, electrical proportional valve cable interface 522, unloading valve cable interface 523, etc. The control box 500 can automatically control various valves, sensors and other electrical components to realize automatic feeding and discharging of materials, gas inlet and outlet, tank pressure regulation and other operations.

[0049] The present invention automatically controls the voltage stabilizing switch of the voltage stabilizing package 201 through the electrical proportional valve 4031, sets the control gas source pressure of the voltage stabilizing package 201 through PID (Proportional Integral Derivative), and controls the pressure and flow of the voltage stabilizing switch of the voltage stabilizing package 201 through the control signal cable 4032 of the electrical proportional valve 4031, thereby automatically controlling the feeding work of the voltage stabilizing tank, and providing system support for fully automatic voltage stabilizing ash removal. Among them, PID control is a linear control, which forms a control quantity by setting the deviation between the given value r(t) and the actual output value y(t) to control the controlled object. In the system of the present invention, the gas source pressure of the voltage stabilizing package 201 is compared with the set working pressure in the voltage stabilizing tank through PID setting, and the control signal is input to the electrical proportional valve 4031. By adjusting the opening of the electrical proportional valve 4031, the gas source pressure of the voltage stabilizing package is automatically controlled.

[0050] The pressure stabilizing tank of the present invention is provided with three-way feed valves, which are respectively connected to corresponding bulk material tanks. The PLC can control the sequential discharge of the bulk material tanks and the valves of the pressure stabilizing tanks for ash removal. The number of bulk material tanks here is not limited to the above three, and can be set according to the depth of the cementing well.

[0051] Embodiment 2:

[0052] This embodiment relates to a fully automatic voltage-stabilizing ash discharging control method, which is implemented based on the fully automatic voltage-stabilizing ash discharging system described in Example 1. The method includes:

[0053] The pressure stabilizing tank and the bulk material tank are each equipped with a control box, the control box is equipped with a PLC control system, a power cable interface and a communication cable interface, and the control box and the PLC control system are connected to the host computer;

[0054] Enter the minimum material weight W of the bulk tank in the upper computer control interface. bsp , set the minimum pressure value P in the bulk tank bsp0 , set the maximum pressure P in the bulk tank bsp1 , set the minimum material weight W of the surge tank wsp , set the pressure value P in the pressure-stabilizing tank wsp , set bulk tank content value Q b , issue automatic operation instructions to the PLC control system;

[0055] The valve status, pressure, material weight and other data information of the pressure regulating tank and bulk tank can be transmitted to the control box and the host computer. The control box adopts remote / local operation mode. When in the local operation mode, it can control the switch of each valve and the instrument data reading on the spot. In the remote operation mode, it can receive the signal of the host computer master control system, and the remote host computer can control the switch of the valve and the instrument data reading;

[0056] When the control box or upper computer control system sends a discharge signal, the material is automatically discharged in sequence according to the bulk tank equipment number. When a bulk tank is about to be empty, it automatically switches to the next bulk tank to continue conveying ash;

[0057] After the ash conveying is completed, calculate the weight of bulk materials used in this operation.

[0058] Specifically, the process of opening and closing the valves of the pressure-surge tank and the bulk tank includes:

[0059] Detect the communication status of the pressure-sustaining tank and all bulk tanks and detect whether the material levels of all bulk tanks are higher than the working material level. If so, open the bypass valve 207 of the pressure-sustaining tank. Otherwise, prompt that the material level of the corresponding numbered bulk tank does not meet the working conditions.

[0060] Determine whether the weight in the pressure-stabilizing tank is higher than the set range. If so, keep the pressure-stabilizing tank bypass valve 207 open and the direct exhaust valve 206 closed, and open the pressure-stabilizing gas source air inlet valve 403 and the air outlet direction of the electronically controlled air circuit reversing valve 4033, start the pressure-stabilizing tank air pressure PID adjustment, and when the pressure of the pressure-stabilizing tank is a constant value, when the control box or the host computer control system sends a discharge signal, the material is automatically discharged in sequence according to the bulk tank equipment number. When a bulk tank is about to be empty, it automatically switches to the next bulk tank to continue conveying ash.

[0061] The power supply and communication cable of this embodiment adopts a two-in-one quick-plug design. Each control box can communicate with the host computer individually, or can communicate with other numbered control boxes in any combination.

[0062] Embodiment 3:

[0063] The equipment of this embodiment consists of 1 pressure-stabilizing tank with a volume of 1.5m 3 ; 3 bulk tanks (bulk tank 1#, bulk tank 2#, bulk tank 3#), each with a volume of 25m 3 . Assume that the production demand this time is 50 tons.

[0064] Based on the above equipment, a fully automatic voltage-stabilizing ash discharging control method is implemented, the method comprising:

[0065] S1, confirm that the equipment is working normally, the pipeline connection is completed, and the valves are all closed; then power on all equipment and execute S2;

[0066] S2. Check whether the communication signals of the pressure regulating tank and bulk tank are normal (read the status of instruments and valves), display the number of the equipment with normal communication, and ask whether to enter the automatic ash conveying system:

[0067] Yes: Execute S3;

[0068] No: Check the device with abnormal communication, and repeat S2 after repairing it;

[0069] S3. Determine whether the material level of all bulk tanks with normal communication is 20m higher than the working material level. 3 ;

[0070] Yes: execute S4;

[0071] No: It indicates that the bulk material tank has not reached the working material level. After adding bulk material, repeat S3;

[0072] S4, set the constant pressure value of the pressure regulating tank to 0.12MPa, set the discharge pressure value of the bulk tank to 0.2MPa, and execute S5;

[0073] S5, open the main drain valve 205 of the pressure stabilizing tank, and execute S6;

[0074] S6. Determine whether the weight in the surge tank is greater than or equal to 1 / 3 of the total load of the surge tank (about 750 kg);

[0075] Yes: the bypass valve 207 of the pressure-surge tank is opened, the direct discharge valve 206 is closed, and S7 is executed;

[0076] No: the bypass valve 207 of the pressure-surge tank is closed, the direct discharge valve 206 is opened, and S25 is executed;

[0077] S7, all the air inlet valves of the three bulk material tanks are opened, the three bulk material tanks are automatically inflated, and S8 is executed;

[0078] Automatic inflation logic for 3 bulk tanks: set the inflation pressure upper limit to 0.25MPa and the lower limit to 0.17MPa. When the pressure inside the tank is higher than the upper limit, the inflation valve is closed; when the pressure inside the tank is lower than the lower limit, the inflation valve is opened.

[0079] S8, the pressure-stabilizing tank body air inlet valve 406 switches the electronically controlled air circuit reversing valve 4033 to the air outlet direction; the pressure-stabilizing tank air pressure PID adjustment program is started, and S9 is executed;

[0080] PID adjustment program logic: Set the target pressure value to 0.12MPa. When the pressure in the pressure-stabilizing tank is higher than the target value of 0.12MPa, the opening of the electric proportional valve 4031 becomes smaller, the emptying opening of the pressure-stabilizing package 201 increases, and the pressure in the tank decreases until it approaches the target pressure value of 0.12MPa, and the opening of the electric proportional valve 4031 is stable; when the pressure in the pressure-stabilizing tank is lower than the target value of 0.12MPa, the opening of the electric proportional valve 4031 increases, the emptying opening of the pressure-stabilizing package 201 decreases, and the pressure in the tank increases until it reaches the target value of 0.12MPa, and the opening of the electric proportional valve 4031 is stable;

[0081] S9, the pressure stabilizing tank opens the feed valve 301 of tank 1#, and executes S10;

[0082] S10, the tank pressure of bulk material tank 1# reaches the discharge pressure of 0.2MPa, the bulk material 1# discharge valve is opened, and S11 is executed;

[0083] S11, open the discharge valve 600 of the pressure-stabilizing tank, and execute S12;

[0084] S12, real-time detection of bulk tank 1# material level, real-time judgment of whether the ash delivery volume reaches the current production demand (50 tons), if it has reached the production demand, directly jump to S20, or when the bulk tank 1# material level is lower than the set lower limit of 1500mm, execute S13;

[0085] S13, close the discharge valve of bulk tank 1#, close the air inlet valve of bulk tank 1#, close the feed valve 301 of pressure regulating tank 1#, and execute S14;

[0086] S14, open the feed valve 302 of the pressure-stabilizing tank 2#, open the discharge valve of the bulk tank 2#, and execute S15;

[0087] S15, real-time detection of bulk tank 2# material level, real-time judgment of whether the ash delivery volume reaches the current production demand (50 tons), if it has reached the production demand, directly jump to S20, or when the bulk tank 2# material level is lower than the set lower limit of 1500mm, execute S16;

[0088] S16, close the discharge valve of bulk tank 2#, close the air inlet valve of bulk tank 2#, close the feed valve 302 of pressure regulating tank 2#, and execute S17;

[0089] S17, open the feed valve of the pressure-stabilizing tank 3#, open the discharge valve of the bulk tank 3#, and execute S18;

[0090] S18, real-time detection of bulk tank 3# tank feed valve 303, real-time judgment of whether the ash delivery volume reaches the current production demand (50 tons), if it has reached the production demand, directly jump to S20, or when the bulk tank 3# material level is lower than the set lower limit of 1500mm, execute S19;

[0091] S19, close the discharge valve of bulk tank 3#, close the air inlet valve of bulk tank 3#, close the feed valve 303 of pressure regulating tank 3#, and execute S20;

[0092] S20, the conveying system stops, and S21 is executed;

[0093] S21, close all tank discharge valves, close all tank air inlet valves, close the pressure-sustaining tank emptying bypass valve 207, open the pressure-sustaining tank emptying direct discharge valve 206, and execute S22;

[0094] S22, close the PID adjustment program of the pressure regulating tank, turn the electronically controlled gas circuit reversing valve 4033 to the exhaust direction, and execute S23;

[0095] S23. When the pressure in the pressure-stabilizing tank reaches normal pressure, all valves of all tanks are closed, and the electric-controlled gas circuit reversing valve 4033 is powered off (converted to ventilation state);

[0096] S24, ash conveying operation is completed;

[0097] S25, execute the automatic inflation procedure: open the air inlet valves of all bulk tanks, the bulk tanks are automatically inflated, and execute S26;

[0098] Automatic inflation logic: Set the upper and lower limits of inflation pressure. When the pressure in the tank is higher than the upper limit, the inflation valve is closed; when the pressure in the tank is lower than the lower limit, the inflation valve is opened;

[0099] S26, the pressure stabilizing tank opens the 1# feed valve and executes S27;

[0100] S27, when the tank pressure of bulk tank 1# reaches the discharge pressure, the discharge valve of bulk tank 1# is opened and S6 is executed.

[0101] The above-mentioned specific implementation modes are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the above-mentioned specific implementation modes. Any appropriate changes or modifications made thereto by any ordinary technician in the technical field in accordance with the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A fully automatic voltage-stabilized ash control method, characterized in that: include: The pressure stabilizing tank and the bulk material tank are each equipped with a control box, the control box is equipped with a PLC control system, a power cable interface and a communication cable interface, and the control box and the PLC control system are connected to the host computer; Enter the minimum material weight W of the bulk tank in the upper computer control interface. bsp , set the minimum pressure value P in the bulk tank bsp0 , set the maximum pressure P in the bulk tank bsp1 , set the minimum material weight W of the surge tank wsp , set the pressure value P in the pressure-stabilizing tank wsp , set bulk tank content value Q b , issue automatic operation instructions to the PLC control system; The valve status, pressure, and material weight data of the pressure-surge tank and bulk tank are remotely transmitted to the control box and the host computer. The control box adopts remote / local operation mode. When in local operation mode, the valve switches and instrument data reading are controlled locally. In remote operation mode, the control box receives the signal from the host computer master control system, and the valve switches and instrument data reading are controlled by the remote host computer. When the control box or upper computer control system sends a discharge signal, the material is automatically discharged in sequence according to the bulk tank equipment number. When a bulk tank is about to be empty, it automatically switches to the next bulk tank to continue conveying ash; After the ash conveying is completed, calculate the weight of bulk materials used in this operation.

2. The fully automatic voltage-stabilized ash discharging control method according to claim 1 is characterized in that: The method is implemented based on a fully automatic voltage-stabilizing ash discharging system, which comprises: The tank body is provided with legs at the bottom, a weighing assembly is provided at the bottom of the legs, a feed pipe is provided at one side of the tank body, and a plurality of tank body feed valves are provided on the feed pipe; The pressure stabilizing assembly comprises a pressure stabilizing package, an upper cover is provided on the upper part of the pressure stabilizing package; the upper cover is provided with a pressure stabilizing gas source inlet; a bypass pipe is provided on the pressure stabilizing package, the bypass pipe is connected to the straight-discharge pipe, and the straight-discharge pipe is connected to the tank body; a bypass valve is provided at the lower end of the pressure stabilizing package, and a total drain valve and a straight-discharge valve are provided on the straight-discharge pipe at the front and rear positions of the bypass pipe respectively; The gas source system includes a gas distribution package, on which an external air inlet valve, a pressure-stabilizing air source air inlet valve, a sweeping valve and a tank air inlet valve are arranged; the sweeping valve is connected to the straight-discharge pipe; the tank air inlet valve is connected to the tank body; the pressure-stabilizing air source air inlet valve led out of the gas distribution package is connected to an electric proportional valve and an electric-controlled air path reversing valve in turn through a pressure-stabilizing air source air path, and then connected to a pressure-stabilizing air source inlet at the upper end of the pressure-stabilizing package; a control signal cable for controlling the opening of the electric proportional valve is arranged at the upper end of the electric proportional valve; The discharge valve of the pressure-stabilizing tank is arranged on the discharge pipe on one side of the tank body; A discharge valve is arranged at the bottom of the tank; Bulk material tanks, each of which is connected to a corresponding tank feed valve on a feed pipe; The control box is connected with the valves, control signal cables and weighing components of the pressure-surge tank and bulk tank.

3. The fully automatic voltage-stabilizing ash discharging control method according to claim 2 is characterized in that: The control box comprises a PLC and a box body, and the box body is provided with a power supply interface and a network cable interface connected to the PLC, a transmission cable interface and a valve cable connection port.

4. The fully automatic voltage-stabilized ash discharging control method according to claim 3 is characterized in that: The box body is provided with a display screen.

5. The fully automatic voltage-stabilizing ash discharging control method according to claim 2 is characterized in that: A pressure reducing valve connected to the PLC is also provided between the tank air inlet valve and the air distribution bag.

6. The fully automatic voltage-stabilized ash discharging control method according to claim 2 is characterized in that: The tank body comprises a cylinder body, the upper part of the cylinder body is an elliptical head, the lower part is a conical head, the lower part of the conical head is provided with supporting legs, and the bottom of the supporting legs is provided with a weighing assembly.

7. The fully automatic voltage-stabilizing ash discharging control method according to claim 6 is characterized in that: A maintenance manhole is arranged in the middle of the cylinder.

8. The fully automatic voltage-stabilizing ash discharging control method according to claim 6 is characterized in that: The elliptical head is provided with a safety valve and a pressure sensor connected with the PLC.

9. The fully automatic voltage-stabilizing ash discharging control method according to claim 3 is characterized in that: A base is provided at the bottom of the tank body.

10. The fully automatic voltage-stabilizing ash discharging control method according to claim 9, characterized in that: The control box is installed on the tank base.

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