CN115302631B - Construction method of indoor geothermal heating filling layer - Google Patents
Construction method of indoor geothermal heating filling layer Download PDFInfo
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- CN115302631B CN115302631B CN202211010503.8A CN202211010503A CN115302631B CN 115302631 B CN115302631 B CN 115302631B CN 202211010503 A CN202211010503 A CN 202211010503A CN 115302631 B CN115302631 B CN 115302631B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
Abstract
The application discloses a construction method of an indoor geothermal heating filling layer, which comprises the following steps: automatically reading concrete information to be proportioned, and calculating and generating related data; according to the generated related data, the upper computer transmits the generated data to a PLC control system, converts the data into related control data, and sends the related control data to each execution unit by the PLC control system for automatic batching; the conveying vehicle conveys the ingredients to respective storage bins respectively, the ingredients are respectively put into the weighing hoppers for metering, and the valve is closed to stop feeding until the numerical value displayed on the electronic scale reaches the required proportioning value; after the required ingredients in the proportion are metered, the collecting hopper and each weighing gate are opened, the materials are put into the stirring motor for stirring, the timing is started from the discharging of the collecting hopper, and when the stirring time is reached, the stirring motor automatically discharges and conveys the materials into a room. The application has low cost, high efficiency and high reliability.
Description
Technical Field
The application belongs to the technical field of floor heating construction, and particularly relates to a construction method of an indoor geothermal heating filling layer.
Background
The floor heating is short for floor radiant heating, the whole floor is taken as a radiator, the whole floor is uniformly heated by a heating medium in a floor radiant layer, heat is supplied to the room in a radiation and convection heat transfer mode through the floor, the purpose of comfortable heating is achieved, and the floor heating filling layer belongs to a floor heating pipe installation auxiliary structure and is stabilized and heat-insulating.
When the existing floor heating filling layer is used for construction and proportioning, the traditional concrete mixing plant has the problem of low construction efficiency, so that the social requirement cannot be met, and improvement is urgently needed.
Disclosure of Invention
The embodiment of the application aims to provide an indoor geothermal heating filling layer construction method which has an automatic control system with low cost, high efficiency and high reliability, can generate an alarm function when faults occur in the production process, displays the position where the faults occur, and is convenient for workers to maintain, thereby solving the problems in the background art.
In order to solve the technical problems, the technical scheme of the construction method of the indoor geothermal heating filling layer provided by the embodiment of the application is as follows:
the embodiment of the application discloses a construction method of an indoor geothermal heating filling layer, which comprises the following steps:
step 1: automatically reading concrete information to be proportioned, and calculating and generating related data;
step 2: according to the generated related data, the upper computer transmits the generated data to a PLC control system, converts the data into related control data, and sends the related control data to each execution unit by the PLC control system for automatic batching;
step 3: the conveying vehicle conveys the ingredients to respective storage bins respectively, the ingredients are respectively put into the weighing hoppers for metering, and the valve is closed to stop feeding until the numerical value displayed on the electronic scale reaches the required proportioning value;
step 4: after the required ingredients in the proportion are metered, the collecting hopper and each weighing gate are opened, the materials are put into the stirring motor for stirring, the timing is started from the discharging of the collecting hopper, and when the stirring time is reached, the stirring motor automatically discharges and conveys the materials into a room.
In a preferred embodiment of any of the foregoing solutions, before the step 3, the method further includes:
the PLC control system sends the collected actual values of various material scales and the running states of various execution units to the upper computer so as to realize dynamic on-line monitoring of the concrete mixing plant.
In a preferred embodiment of any of the foregoing solutions, after the step 4, the method further includes:
and when the stirring system is used for stirring concrete, metering the material of the next production task.
In a preferred embodiment of any of the above schemes, in said step 2:
when weighing and metering of stones in the ingredients are just started, the big door and the small door of the execution unit are simultaneously opened for quick ingredients, and when the weight measured by the weighing sensor reaches 80% of a formula set value, the big door of the execution unit is closed, and only the blanking process of the small door is left.
In a preferred embodiment of any of the foregoing solutions, the transporting vehicle transports ingredients to respective storage bins, and the ingredients are respectively put into the weighing hoppers for weighing, and the valves are closed to stop feeding until a numerical value displayed on the electronic scale reaches a required proportioning value, including:
step 31: firstly, detecting whether the bucket value of a balance bucket is smaller than a preset value;
step 32: if the dynamic data is smaller than the preset value, starting the material bin feeding device, enabling the materials to enter the metering hopper, conditioning the measured dynamic data by the weighing sensor of the metering hopper, and sending the dynamic data into the industrial personal computer and the PLC control system through one A/D channel of the acquisition card;
step 33: the PLC control system generates corresponding control quantity after calculation and then sends the control quantity out by a D/A channel of the acquisition card;
step 34: the analog current input end of the frequency converter or the valve is used for receiving the analog current, and the magnitude of the frequency converter or the valve is controlled by changing the magnitude of the input current of the frequency converter or the valve through the fuzzy controller.
In a preferred embodiment of any of the foregoing, in the step 2 to the step 4:
when the power is off in the production process, the relay stores the running state and parameters of the electronic scale, the water balance, various button switches, the electromagnetic valve, the pneumatic valve and the motor before the power is off.
In a preferred embodiment of any of the foregoing, in the step 2 to the step 4:
when the equipment fails, the limit switch and the sensor are arranged on the operation equipment to monitor the operation state of the operation equipment, and the measured signals are transmitted to the PLC control system in real time;
the PLC control system receives the signals and distinguishes the signals, and when a fault signal is found, an audible and visual alarm signal is sent out;
and transmitting the alarm signal to the upper computer, displaying the running equipment with faults and the fault reasons in detail on the display, and informing the maintenance personnel of the faults according to the fault information by the operators in the control room.
In a preferred embodiment of any of the foregoing solutions, the fuzzy controller includes:
the blurring interface is used for converting the input accurate quantity into a blurring quantity;
the knowledge base comprises a database and a rule base, wherein the database stores knowledge about fuzzification, fuzzy reasoning and definition, and is used for defining membership functions of fuzzy subsets of input variables and output variables;
fuzzy reasoning is used for carrying out reasoning decision on the input analog quantity;
and the definition interface is used for determining the fuzzy control quantity at the moment for the fuzzy set obtained by fuzzy reasoning generally through a fuzzy resolution algorithm.
The preferred embodiment in any of the above aspects, further comprising: when the concrete is conveyed in a long distance, two ends of the conveying hose are connected together through connecting pieces respectively, each connecting piece comprises a connecting cylinder and a gland, each gland is arranged on the outer wall of each connecting cylinder, each gland is welded with each connecting cylinder, one side of each gland is used for installing a sealing gasket, a threaded hole is formed in each gland, when the concrete is assembled, one side of each gland is extruded together, each bolt penetrates through each threaded hole, and each gland is fixed together.
Compared with the prior art, the construction method of the indoor geothermal heating filling layer has the advantages that the construction method has an automatic control system with low cost, high efficiency and high reliability, when faults occur in the production process, an alarm function can be achieved, the positions of the faults are displayed, and the maintenance of workers is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application, and together with the description serve to explain the application. Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings denote the same or similar parts or portions, and it will be understood by those skilled in the art that the drawings are not necessarily drawn to scale, in which:
fig. 1 is a schematic flow chart of a construction method of an indoor geothermal heating filling layer according to an embodiment of the application.
Fig. 2 is a schematic diagram of a stirring flow in the construction method of the indoor geothermal heating filling layer according to the embodiment of the application.
Fig. 3 is a schematic diagram of a PLC control system in the construction method of an indoor geothermal heating filling layer according to an embodiment of the present application.
Fig. 4 is a schematic connection diagram of two material transporting hoses in the construction method of an indoor geothermal heating filling layer according to an embodiment of the present application.
Fig. 5 is a schematic diagram of connection between a connecting cylinder and a gland in the construction method of an indoor geothermal heating filling layer according to an embodiment of the application.
Detailed Description
In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present application with reference to the accompanying drawings. It will be apparent that the described embodiments are merely embodiments of the various components of the application, and not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The following embodiments of the present application will illustrate the scheme of the present application in detail by taking the construction method of the filling layer for geothermal heating as an example, but the embodiments do not limit the protection scope of the present application.
Examples
Example 1
As shown in fig. 1 to 3, an embodiment of the present application provides a construction method of an indoor geothermal heating filling layer, the construction method including the following steps:
step 1: and automatically reading concrete information to be dosed, and calculating and generating related data.
In the construction method of the indoor geothermal heating filling layer, after a concrete conveying vehicle enters a station, an operator inputs specific information according to a formula given by scheduling: contract number, vehicle quantity, mixer capacity, required discharge quantity, planned quantity, stirring time, sand content and water content of dry-mixed composite lightweight aggregate, engineering name, construction unit, construction position, concrete label, conveying mode, driver, license plate number, scheduling and operator, and the related data is automatically read and calculated by the monitoring software of the upper computer.
Step 2: and according to the generated related data, the upper computer transmits the generated data to a PLC control system, converts the data into related control data, and sends the related control data to each execution unit by the PLC control system for automatic batching.
In the construction method of the indoor geothermal heating filling layer, after data are generated, the upper computer materializes the data generated at this time to the PLC control system and converts the data into relevant control data, and the control data are sent to each execution unit by the PLC control system for automatic production. In the actual production process, the PLC control system also transmits the collected actual values of various material scales and the running states of various execution units to the upper computer so as to realize the dynamic on-line monitoring of the concrete mixing plant. And after the stirring task is finished once, the upper computer files the production data, so that the subsequent inquiry and management are convenient. After the production task of the bicycle is completed, the upper computer automatically prints the bicycle dispatching list, and the bicycle dispatching list is handed to each department by a driver. The above steps are one production cycle of the concrete mixing plant. During the stirring production process, if other vehicles enter the station, new production information is sequentially input into the production task list.
Step 3: the delivery vehicle respectively conveys the ingredients to respective storage bins, the ingredients are respectively put into the weighing hoppers for metering, and the valve is closed to stop feeding until the numerical value displayed on the electronic scale reaches the required proportioning value.
In the construction method of the indoor geothermal heating filling layer, in the batching process of a concrete mixing plant, firstly, dry-mixed composite lightweight aggregates are respectively conveyed to respective storage bins by a conveying vehicle, then, feeding valves of the dry-mixed composite lightweight aggregates mentioned in the proportioning are opened, the dry-mixed composite lightweight aggregates are respectively fed into a scale bucket for metering, the valves are closed to stop feeding until the numerical value displayed on an electronic scale reaches a required proportioning value, and then, the dry-mixed composite lightweight aggregates are fed into a collecting hopper by a flat belt and an inclined belt which are running.
Step 4: after the required ingredients in the proportion are metered, the collecting hopper and each weighing gate are opened, the materials are put into the stirring motor for stirring, the timing is started from the discharging of the collecting hopper, and when the stirring time is reached, the stirring motor automatically discharges and conveys the materials into a room.
In the construction method of the indoor geothermal heating filling layer, cement is metered while dry-mixing composite lightweight aggregate is mixed, after the materials required in the mixture ratio are metered, a collecting hopper and weighing doors are opened, the materials are put into a stirring motor for stirring, the materials are started to be discharged from the collecting hopper, the stirring motor can automatically discharge (or can manually discharge) when the stirring time is reached, wherein a discharge valve is half-opened and fully-opened, the specific set time is completed in a monitoring picture, and one production cycle of the concrete mixing process is completed by the steps.
As shown in fig. 1 to 3, after the step 4, the method further includes:
and when the stirring system is used for stirring concrete, metering the material of the next production task.
In the construction method of the indoor geothermal heating filling layer, in order to improve the production efficiency of a concrete mixing plant, materials of the next production task are generally measured when a mixing system performs concrete mixing. Therefore, the whole equipment can continuously work, the time wasted by the intermediate waiting link is saved, and the efficiency is improved. However, at the same time, the working sequence of each device must meet the production requirement, and in order to avoid errors in the batching process, the control system requires the next link after all the control states are completed, so that the installation of limit switches and sensors on each device is necessary, and meanwhile, the dynamic monitoring of the control states is also facilitated.
As shown in fig. 1 to 3, before the step 3, the method further includes:
the PLC control system sends the collected actual values of various material scales and the running states of various execution units to the upper computer so as to realize dynamic on-line monitoring of the concrete mixing plant.
In the construction method of the indoor geothermal heating filling layer, the hopper equipment mainly comprises a storage hopper (collecting hopper), a discharging device (valve and the like) and certain auxiliary equipment, and the storage hopper equipment mainly serves as an excessive storage bin for transferring materials and improving efficiency. In this mixing plant, the hopper and load cell are combined to perform automatic weighing and batching. It therefore belongs to field process equipment and not to a warehouse for storing materials. Wherein both the screw and the valve are also the main discharge devices. The valve is mainly used for controlling the opening and closing of the discharging opening of the hopper, and most of the valve is a pneumatic valve, and has the advantages of simple operation, high discharging speed, simple realization of uniform discharging when a screw machine is used for discharging, and addition of a vibrator on the powder hopper to keep the discharging smooth. All the metering devices for powder are provided with screw machines, and the discharging weighing hoppers are provided with pneumatic valves, so that the metering precision and the discharging speed are improved. The valve is the most widely used one in concrete mixing plant, its operation mode is controlled by compressed air cylinder, in which the dry-mixed composite light aggregate is fed by valve and the powder (cement, powder, flyash, mineral powder, etc.) is fed by screw machine. The weighing device is used for measuring the actual value of each material, the accuracy of the weighing device seriously affects the quality of concrete, and the weighing device mainly comprises a storage hopper (collecting hopper), a feeding device (valve), a weighing device and the like. In production practice, in order to ensure the quality of concrete, accurate weighing equipment must be selected firstly, then the weighing speed can be considered, the accuracy of weighing restricts the quality of the concrete strength, and meanwhile, the production efficiency is also affected. According to the actual condition of the site and the type of the weighing equipment, the electronic scale is selected as the weighing equipment, the stirring equipment is generally of a common type, and the water supply equipment is not needed to be equipped, so that stable production work can be realized.
As shown in fig. 1 to 3, in the step 2:
when weighing and metering of stones in the ingredients are just started, the big door and the small door of the execution unit are simultaneously opened for quick ingredients, and when the weight measured by the weighing sensor reaches 80% of a formula set value, the big door of the execution unit is closed, and only the blanking process of the small door is left.
In the construction method of the indoor geothermal heating filling layer, the weighing precision is improved and the weighing and metering time is reduced through the mutual matching of the big door and the small door. The same reason is true. The weighing and metering of cement is to convey raw materials from respective bins to an electronic scale through a screw conveyor for metering and then to a stirring system together. In order to realize the circulation control of the system and improve the production efficiency of the mixing station, when the last batching task is completed and enters the mixing system to mix concrete, the dry-mixed composite lightweight aggregate, water, cement and the like in the next circulation are weighed and metered simultaneously.
As shown in fig. 1 to 3, the conveying vehicle conveys ingredients to respective storage bins, the ingredients are respectively put into weighing hoppers for metering, and the valve is closed to stop feeding until a numerical value displayed on the electronic scale reaches a required proportioning value, which comprises:
step 31: firstly, detecting whether the bucket value of a balance bucket is smaller than a preset value;
step 32: if the dynamic data is smaller than the preset value, starting the material bin feeding device, enabling the materials to enter the metering hopper, conditioning the measured dynamic data by the weighing sensor of the metering hopper, and sending the dynamic data into the industrial personal computer and the PLC control system through one A/D channel of the acquisition card;
step 33: the PLC control system generates corresponding control quantity after calculation and then sends the control quantity out by a D/A channel of the acquisition card;
step 34: the analog current input end of the frequency converter or the valve is used for receiving the analog current, and the fuzzy controller is used for changing the input current of the frequency converter or the valve to control the frequency of the frequency converter or the opening of the valve, so that the feeding speed is changed, and finally, the aim of controlling the whole batching process is achieved.
As shown in fig. 1 to 3, in the step 2 to the step 4:
when the power is off in the production process, the relay stores the running state and parameters of the electronic scale, the water scale, various button switches, the electromagnetic valve, the pneumatic valve and the motor before the power is off;
when the equipment fails, the limit switch and the sensor are arranged on the operation equipment to monitor the operation state of the operation equipment, and the measured signals are transmitted to the PLC control system in real time;
the PLC control system receives the signals and distinguishes the signals, and when a fault signal is found, an audible and visual alarm signal is sent out;
and transmitting the alarm signal to the upper computer, displaying the running equipment with faults and the fault reasons in detail on the display, and informing the maintenance personnel of the faults according to the fault information by the operators in the control room.
In the construction method of the indoor geothermal heating filling layer, when equipment fails, the failure is removed in the shortest time in order to find out the failure and find out the reason timely and accurately, and the normal operation of concrete production is ensured, so that a failure automatic alarm program is arranged in a PLC control system, and the stable and efficient operation of the whole system is ensured.
As shown in fig. 1 to 3, the fuzzy controller includes:
the blurring interface is used for converting the input accurate quantity into a blurring quantity;
the knowledge base comprises a database and a rule base, wherein the database stores knowledge about fuzzification, fuzzy reasoning and definition, and is used for defining membership functions of fuzzy subsets of input variables and output variables;
fuzzy reasoning is used for carrying out reasoning decision on the input analog quantity;
and the definition interface is used for determining the fuzzy control quantity at the moment for the fuzzy set obtained by fuzzy reasoning generally through a fuzzy resolution algorithm.
In the construction method of the indoor geothermal heating filling layer, in order to improve the batching speed, the batching process is divided into two steps of coarse batching and fine batching, and in the coarse batching process, a frequency converter feeds at the maximum frequency (or a valve is at the maximum opening), so that the material approaches an expected value at the fastest speed; then enter the fine batching stage, the program will automatically adjust the frequency of the frequency converter (or the opening of the valve) according to the feedback value to make the value of the controlled quantity approach the expected value and make the error within the allowable range, wherein, in order to improve the metering accuracy, y is used 0 Representing the expected value of the input material, i.e. steady state value, u (s) Representing the frequency (or valve opening) of the frequency converter, delta y (s) Representing the increment of the input material, k 1 Indicating the flow coefficient of the feeding mechanism, due to k 1 And the expected value y 0 Related, let k 1 ＝k 2 *y 0 ，K 2 S is a Laplace transform variable, and the transfer function is:in the above control algorithm, the control part is assumed to be continuously adjustable between the switching point and zero, and the control is feasible for materials such as powder, additive, water and the like controlled by a frequency converter, but for materials such as sand and stones in dry-mixed composite lightweight aggregate with blocky solids, when a valve is usedWhen the opening is too small, the materials may get stuck at the valve and cannot reach the weighing hopper, and in view of this, it is not necessary to use continuously adjustable control of the materials, for which, we set in particular several different valve openings, such as 0, 20%, 30%, 50%, 80%, 100%, etc., we set typically 4 openings: 100% valve opening all doors are fully opened; opening a 20% valve and a 30% valve when the opening of the 50% valve is 50%; the opening of the valve is 20% that of one valve is only 20%; the valve is fully closed when the valve is opened by 0, and by adopting the calculation mode, the metering precision is greatly improved while the batching time is saved, so that the improvement of the production efficiency is ensured, and the essential change of the quality of concrete is also ensured.
As shown in fig. 4 and fig. 5, in the construction method of an indoor geothermal heating filling layer according to the embodiment of the present application, the method further includes: when the concrete is conveyed in a long distance, two ends of the conveying hose 1 are respectively connected together through connecting pieces, each connecting piece comprises a connecting cylinder 2 and a gland 3, each gland 3 is arranged on the outer wall of each connecting cylinder 2, each gland 3 is welded with each connecting cylinder 2, one side of each gland 3 is used for installing a sealing gasket, a threaded hole 31 is formed in each gland 3, when the concrete conveying hose is assembled, two sides of each gland 3 are extruded together, bolts penetrate through the threaded holes 31, the two glands 3 are fixed together, convenient disassembly and assembly can be achieved, and sealing between the two glands is tighter through the arrangement of the sealing gaskets.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (5)
1. The construction method of the indoor geothermal heating filling layer is characterized by comprising the following steps of: the construction method comprises the following steps:
step 1: automatically reading concrete information to be proportioned, and calculating and generating related data;
step 2: according to the generated related data, the upper computer transmits the generated data to a PLC control system, converts the data into related control data, and sends the related control data to each execution unit by the PLC control system for automatic batching;
step 3: the conveying vehicle conveys the ingredients to respective storage bins respectively, the ingredients are respectively put into the weighing hoppers for metering, and the valve is closed to stop feeding until the numerical value displayed on the electronic scale reaches the required proportioning value;
step 4: after the ingredients required in the proportion are metered, opening a collecting hopper and weighing doors, putting materials into a stirring motor for stirring, starting timing from the discharging of the collecting hopper, and automatically discharging the materials to a concrete conveying device when the stirring time is reached, wherein the concrete conveying device is conveyed into a room through a conveying hose;
before the step 3, the method further comprises:
the PLC control system sends the collected actual values of various material scales and the running states of various execution units to an upper computer so as to realize dynamic on-line monitoring of the concrete mixing plant;
in step 2:
when weighing and metering of stones in the ingredients are just started, the big door and the small door of the execution unit are simultaneously opened for quick ingredients, and when the weight measured by the weighing sensor reaches 80% of a formula set value, the big door of the execution unit is closed, and only the blanking process of the small door is remained;
the delivery wagon carries the batching respectively to each storage silo, and the batching is thrown into the scale fill respectively and is measured, and the valve is closed and stop the material of throwing until the numerical value that shows on the electronic scale reaches required ratio value, includes:
step 31: firstly, detecting whether the bucket value of a balance bucket is smaller than a preset value;
step 32: if the dynamic data is smaller than the preset value, starting the material bin feeding device, enabling the materials to enter the metering hopper, conditioning the measured dynamic data by the weighing sensor of the metering hopper, and sending the dynamic data into the industrial personal computer and the PLC control system through one A/D channel of the acquisition card;
step 33: the PLC control system generates corresponding control quantity after calculation and then sends the control quantity out by a D/A channel of the acquisition card;
step 34: the analog current input end of the frequency converter or the valve is used for receiving the analog current, and the magnitude of the frequency converter or the valve input current is changed through the fuzzy controller to control the magnitude of the frequency converter or the opening of the valve; dividing the batching process into a coarse batching step and a fine batching step, wherein in the coarse batching step, a frequency converter feeds at the maximum frequency or a valve feeds at the maximum opening degree, so that the material approaches an expected value at the fastest speed; then entering a fine dosing stage, wherein the program automatically adjusts the frequency of the frequency converter or the opening of the valve according to the feedback value to enable the value of the controlled quantity to approach the expected value and enable the error to be within an allowable range, wherein y is used for improving the metering accuracy 0 Representing the expected value of the input material, i.e. steady state value, u (s) Indicating frequency of frequency converter or valve opening, deltay (s) Representing the increment of the input material, k 1 Indicating the flow coefficient of the feeding mechanism, due to k 1 And the expected value y 0 Related, let k 1 ＝k 2 *y 0 ，k 2 S is a Laplace transform variable, and the transfer function is:in the control algorithm, different valve openings are set for materials with blocky solids of sand and stones in the dry-mixed composite lightweight aggregate: 0. 20%, 30%, 50%, 80%, 100%, wherein all valves are fully open at 100% valve opening; opening a 20% valve and a 30% valve when the opening of the 50% valve is 50%; when the opening of the valve is 20%, only the valve is opened by 20%; when the valve is opened, the valve is fully closed;
further comprises: when long distance transport concrete, two conveyer hose (1) both ends link together through the connecting piece respectively, the connecting piece includes connecting cylinder (2) and gland (3), gland (3) set up in on the outer wall of connecting cylinder (2), just gland (3) with connecting cylinder (2) welding, gland (3) one side is used for installing sealed the pad, be provided with screw hole (31) on gland (3), when the equipment, two one side extrusion of gland (3) is in the same place, and the bolt wears to establish screw hole (31), will two gland (3) are fixed together.
2. The construction method of an indoor geothermal heating filling layer according to claim 1, wherein: after the step 4, the method further comprises:
and when the stirring system is used for stirring concrete, metering the material of the next production task.
3. The construction method of the indoor geothermal heating filling layer according to claim 2, wherein: in the steps 2 to 4:
when the power is off in the production process, the relay stores the running state and parameters of the electronic scale, the water balance, various button switches, the electromagnetic valve, the pneumatic valve and the motor before the power is off.
4. The construction method of the indoor geothermal heating filling layer according to claim 3, wherein: in the steps 2 to 4:
when the equipment fails, the limit switch and the sensor are arranged on the operation equipment to monitor the operation state of the operation equipment, and the measured signals are transmitted to the PLC control system in real time;
the PLC control system receives the signals and distinguishes the signals, and when a fault signal is found, an audible and visual alarm signal is sent out;
and transmitting the alarm signal to the upper computer, displaying the running equipment with faults and the fault reasons in detail on the display, and informing the maintenance personnel of the faults according to the fault information by the operators in the control room.
5. The construction method of an indoor geothermal heating filling layer according to claim 4, wherein: the fuzzy controller includes:
the blurring interface is used for converting the input accurate quantity into a blurring quantity;
the knowledge base comprises a database and a rule base, wherein the database stores knowledge about fuzzification, fuzzy reasoning and definition, and is used for defining membership functions of fuzzy subsets of input variables and output variables;
fuzzy reasoning is used for carrying out reasoning decision on the input analog quantity;
and the definition interface is used for determining the fuzzy control quantity at the moment through a defuzzification algorithm for the fuzzy set obtained by fuzzy reasoning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211010503.8A CN115302631B (en) | 2022-08-23 | 2022-08-23 | Construction method of indoor geothermal heating filling layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211010503.8A CN115302631B (en) | 2022-08-23 | 2022-08-23 | Construction method of indoor geothermal heating filling layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115302631A CN115302631A (en) | 2022-11-08 |
| CN115302631B true CN115302631B (en) | 2023-09-22 |
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| JP2017138723A (en) * | 2016-02-02 | 2017-08-10 | 合同会社コンクリート診断会 | Quality management method of ready-mixed concrete |
| CN111331735A (en) * | 2020-05-06 | 2020-06-26 | 许昌德通振动搅拌技术有限公司 | Mixing station control method and device and mixing station |
| CN216590432U (en) * | 2021-11-27 | 2022-05-24 | 江苏柯氏金属科技有限公司 | Connecting flange for splicing stainless steel pipelines |
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| CN103412482A (en) * | 2013-06-09 | 2013-11-27 | 苏州经贸职业技术学院 | Dynamic fuzzy control system and control method thereof |
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| CN103885383A (en) * | 2014-03-27 | 2014-06-25 | 辽宁工程技术大学 | Touch screen type batching control method and system for concrete batching plant |
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| CN115302631A (en) | 2022-11-08 |
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