CN215376125U - Intelligent compost ventilation control system - Google Patents
Intelligent compost ventilation control system Download PDFInfo
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- CN215376125U CN215376125U CN202120769839.7U CN202120769839U CN215376125U CN 215376125 U CN215376125 U CN 215376125U CN 202120769839 U CN202120769839 U CN 202120769839U CN 215376125 U CN215376125 U CN 215376125U
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Abstract
The utility model relates to an intelligent compost ventilation control system, which comprises a control cabinet, a signal acquisition unit and a variable frequency blower; the control cabinet is provided with a case, the front surface of the case is provided with a touch screen and an operation switch, and a power supply unit, a central control unit and a fan control unit are arranged in the case; the signal acquisition unit comprises a group of signal sensors positioned on the compost pile site; the touch screen is connected with the central control unit; the control switch is connected with the central control unit; the variable frequency blower is connected with the fan control unit, and the fan control unit is connected with the central control unit. According to the utility model, the signal acquisition unit acquires each index of a compost pile field, the central control unit calculates a control parameter according to data sent by the signal acquisition unit and intelligent fitting by combining an operation switch instruction and a touch screen input parameter, and the fan control unit controls the variable frequency blower according to the control parameter, so that the intelligent control of the ventilation in the aerobic composting process is completed.
Description
Technical Field
The utility model relates to an intelligent compost ventilation control system, and belongs to the technical field of fertilizer manufacturing.
Background
Aerobic composting is the process of oxidizing, decomposing, absorbing and converting organic waste by aerobic microorganisms under aerobic conditions. Aeration is a necessary condition for aerobic composting. During composting, ventilation has 3 effects: oxygen supply, heat dissipation and moisture removal. Different ventilation volumes have different influences on the composting process, the ventilation volumes are insufficient and cannot meet the requirement of aerobic, anaerobic fermentation occurs locally to inhibit the reaction process, and the ventilation volumes are too large, so that the heat generated by the pile body is dissipated too fast, and the temperature rise of the pile body is influenced. Too much or too little ventilation affects the temperature of the compost and thus the quality of the compost product. Among various ventilation methods, the forced ventilation method is a method of conveying air to a pile body through a ventilation duct by using a blower, and is widely used in aerobic composting engineering.
The oxygen consumption rate refers to the rate of utilizing oxygen by microorganisms in the composting process and is a mark of the rate of decomposing and converting organic matters by aerobic microorganisms, so that the aerobic composting carries out tracking test on the oxygen consumption rate, the ventilation quantity is adjusted in time, the microorganisms in the compost have the optimal activity when the aerobic composting is at the maximum aerobic rate, and the ventilation quantity at the moment is the optimal ventilation quantity. The optimum ventilation varies continuously with the progress of composting. In order to realize the optimal ventilation quantity and the optimal ventilation effect, a plurality of ventilation control modes are adopted to realize the reasonable control of the composting process, such as a timing on-off cycle control mode, an oxygen content feedback control mode, a temperature-oxygen content feedback control mode and the like, and the forced ventilation control mode can be developed and upgraded continuously along with the improvement of the monitoring technology and the informatization level. All aerobic composting ventilation control modes need to convey air into a compost body in real time, properly and uniformly according to the change of operation parameters in the composting process. Therefore, a ventilation control system capable of performing feedback control in time according to changes in the operating parameters of the compost is particularly important in the composting process.
The ventilation control of the aerobic compost mainly controls ventilation quantity, ventilation time and ventilation interval reasonably according to the change of operation parameters. The existing ventilation control mode is a ventilation mode with preset various different ventilation amounts, ventilation time and ventilation intervals, and then the corresponding ventilation mode is selected according to the change of stack operation control indexes such as temperature, oxygen content and the like, and is a passive feedback control mode, namely, when the monitoring data triggers a set threshold value, the corresponding ventilation mode is started, and the ventilation mode does not change as long as the ventilation mode is within the range allowed by the operation control indexes; for the regulation and control of ventilation volume, two methods exist: one is to adopt the pipeline to regulate the air quantity, keep the output air quantity of the blower unchanged, the central controller controls the opening and closing degree of the regulating valve according to the operational control index feedback, in order to control the magnitude of the output air quantity, but there are problems such as the pipeline windage is great, the energy consumption is high, the accuracy of the output air quantity is insufficient, the output wind pressure is difficult to control in use; the other method is that the output air volume of the fan is kept unchanged, the central controller feeds back according to the operation control index, and the output air volume is controlled by changing the ventilation time, so that the accuracy of the output air volume is high, the output air pressure cannot be adjusted, and the feedback regulation and control time of the output air volume is slow.
In addition, aerobic composting all adopts one end air inlet at present, for the homogeneity that improves the air inlet, mainly adopts two kinds of modes: one is to increase the ventilation pipeline and arrange the ventilation holes reasonably, so that the air output of each hole is kept uniform; the other is that a cushion layer is additionally arranged under the stack body and is used as an air inlet buffer cavity, so that air uniformly enters the stack body from the bottom. This kind of one end air inlet form, even guarantee the homogeneity of air output through the aperture of adjustment exhaust vent, because air inlet channel windage and along the way wind pressure loss lead to big at air inlet end wind pressure, the other end wind pressure of keeping away from the air intake is little, hardly accomplishes the homogeneity of cloth wind in fact.
Because the microbial fermentation is continuously carried out and continuously changed, the existing ventilation control technology is difficult to stably control the optimal ventilation quantity in the whole composting process, so that the aerobic rate is in a fluctuating state in the actual composting process, the composting time is prolonged, and the quality of composting products is influenced.
The utility model patent application with application number CN201810459237.4 and application publication number CN108383573A discloses a composting system and an air supply method and a composting method thereof, wherein the core of the composting system is that an air supply device supplies air intermittently to compost, the intermittent air supply comprises four continuous stages, each stage is provided with fixed air supply time and air stop time, the air supply mode is air supply from one end of a vent pipe, and vent holes are distributed on the vent pipe; simultaneously, the size of amount of wind during the air supply is adjusted through the operation of control air supply arrangement, specifically is, monitors windrow temperature T to preset reference temperature T1 and T2, T1 > T2, at the in-process of intermittent type nature air supply, according to the real-time feedback control air supply arrangement's of temperature T start-stop and operation, wherein: when T is more than T1, the air supply device runs at high speed and outputs large air volume; when T1 is more than T and more than T2, the air supply device runs at low speed and outputs small air volume; when T is less than T2, the air supply device is closed, and air supply is stopped; the feedback control unit of the control system controls the opening or closing of the air supply device according to the temperature data detected by the temperature sensor and the gas concentration data detected by the gas sensor, and the output air volume is realized by controlling the blower by the control system through the frequency converter. However, according to the ventilation method stated in the technical scheme, the output air volume cannot be controlled digitally and accurately, and the ventilation time cannot be adjusted, so that the ventilation volume required by the stack body is difficult to be controlled automatically through the feedback control unit, and in addition, due to the pressure loss of the ventilation pipe, the ventilation volume in the longitudinal length range of the stack body is difficult to ensure the uniformity of the ventilation volume in the longitudinal length range of the stack body by adopting an one-end air supply mode.
The core of the utility model patent application with the application number of CN200910058237.4 and the application publication number of CN101475413A is that a central control unit sets the ventilation sequence of a material pile and compiles a corresponding opening queue of electric air valves of the material pile by using external data information received by a signal input unit, and then controls the opening and closing of each electric air valve and a fan in the opening queue through a signal output unit. The utility model patent application with application number CN201810040701.6 and application publication number CN108117421A discloses a compost ventilation aeration system, which comprises one or more aeration units, wherein each aeration unit comprises an aeration fan and one or more aeration pipe groups, a plurality of air distribution pipes are connected with the aeration fan through the aeration pipes and are uniformly distributed in a compost tank, an electric valve arranged at the air inlet end of each air distribution pipe controls the aeration time and area of an aerobic compost pile body, and a control device can respectively control the start and stop of the aeration fan and the electric valve to aerate a designated area according to the set time, so that the control of section interval and section is realized. The essence of the two schemes is that under the condition that the ventilation volume of the aeration (air blower) is kept unchanged, the pressure loss of the ventilation pipe is counteracted by transversely and sectionally supplying air, so that the air distribution uniformity of the stack body is ensured, then the aeration air volume required by the stack body is realized by setting fixed ventilation time and ventilation interval through the control device, and because automatic feedback control is not carried out according to the operation parameters of the stack body, the change of the operation parameters of the stack body can only be artificially judged and adjusted, but the aeration air volume can not be controlled in real time.
Therefore, it is urgently needed to develop an intelligent compost ventilation control system, which can automatically and quickly perform feedback control according to the change of the operation control index of the compost, realize accurate output of ventilation quantity, and convey air into the compost in real time, in a proper amount and uniformly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the problems in the prior art, the intelligent compost ventilation control system is provided, and the ventilation quantity in the aerobic composting process can be intelligently controlled.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an intelligent compost ventilation control system comprises a control cabinet, a signal acquisition unit and a variable frequency blower; the control cabinet is characterized by comprising a case, wherein the front surface of the case is provided with a touch screen and an operation switch, and a power supply unit, a central control unit and a fan control unit are arranged in the case; the touch screen, the control switch, the signal acquisition unit, the central control unit and the fan control unit are respectively connected with the power supply unit; the signal acquisition unit comprises a group of signal sensors positioned on the compost pile site, and the signal output end of each signal sensor is connected with the signal input end of the central control unit; the data exchange end of the touch screen is connected with the data exchange end of the central control unit; the control end of the control switch is connected with the controlled end of the central control unit; the variable frequency blower is connected with the fan control unit, and the controlled end of the fan control unit is connected with the control end of the central control unit.
In the structure, the signal acquisition unit acquires indexes (such as temperature, air volume, air pressure, oxygen content and the like) of a compost pile site, the central control unit intelligently fits and calculates control parameters of the variable-frequency blower according to data sent by the signal acquisition unit and control instructions of the control switch and the control parameters input by the touch screen, relevant information is displayed on the touch screen, and the fan control unit controls the variable-frequency blower according to the control parameters, so that the intelligent control of the ventilation volume in the aerobic composting process is completed.
The utility model can also adopt the following preferred scheme:
preferably, the signal sensor is an analog quantity sensor or a digital quantity sensor; the central control unit comprises a CPU programmable logic controller and an AD programmable controller analog input module; the AD programmable controller analog quantity input module is provided with an input end connected with a signal output end of the analog quantity sensor, and an output end connected with a first input end of the CPU programmable logic controller; and the signal output end of the digital quantity sensor is connected with a second input end of the CPU programmable logic controller through a network transmission module.
By adopting the preferable scheme, the data transmission mode of the signal sensor and the central control unit can be further optimized.
Preferably, the fan control unit comprises a filter and a frequency converter, one end of the filter is connected with the power supply unit, the other end of the filter is connected with one end of the frequency converter, and the other end of the frequency converter is connected with the variable-frequency blower; the controlled end of the frequency converter is superposed with the controlled end of the fan control unit; the central control unit also comprises a DA programmable controller analog quantity output module, wherein the input end of the DA programmable controller analog quantity output module is connected with the control end of the CPU programmable logic controller, and the output end of the DA programmable controller analog quantity output module is connected with the controlled end of the frequency converter; and the control end of the CPU programmable logic controller is superposed with the control end of the central control unit.
More preferably, the signal acquisition unit comprises a flow meter, a thermometer, a barometer, an oxygen content meter; the network transmission module is a serial server with a Modbus gateway; the variable frequency blower is further provided with a fan, the fan control unit further comprises a fan switch, and the fan switch is connected with the power supply unit.
By adopting the preferable scheme, the specific structures and the controlled modes of the fan control unit and the variable-frequency blower can be further optimized.
Preferably, the manipulation switch includes a manual/automatic control changeover switch, and a local/remote control changeover switch; the control end of the control switch comprises a control end of a manual/automatic control change-over switch and a control end of a local/remote control change-over switch; the controlled end of the CPU programmable logic controller is superposed with the controlled end of the central control unit; and the control end of the manual/automatic control change-over switch and the control end of the local/remote control change-over switch are respectively connected with the controlled end of the CPU programmable logic controller.
By adopting the preferred scheme, the control structure of the control switch can be further optimized.
Preferably, the system further comprises a ventilation pipeline, wherein the ventilation pipeline comprises a ventilation main pipe, a transition distribution pipe and a ventilation branch pipe; the air inlet of the ventilation pipeline is arranged on the ventilation main pipe, and the air outlet of the ventilation pipeline is arranged on the ventilation branch pipe; the number of the air inlets corresponds to that of the main ventilation pipes one by one; the air outlet holes are distributed along the length direction of the ventilation branch pipe; the ventilation main pipe is communicated with a transition distribution pipe, and the transition distribution pipe is communicated with a ventilation branch pipe; the transition distribution pipes correspond to the ventilation main pipes one by one; the number of the main ventilation pipes is at least two, wherein the two main ventilation pipes are arranged at two ends of the branch ventilation pipes and are communicated with the corresponding tail ends of the branch ventilation pipes through transition distribution pipes; the number of the variable frequency air blowers corresponds to the number of the main ventilation pipes one by one, and the air outlets of the variable frequency air blowers are communicated with the air inlets of the corresponding main ventilation pipes.
By adopting the preferable scheme, the influence of pressure loss of the pipeline can be further reduced by adopting an air inlet mode at two ends, the ventilation uniformity of the pile body is improved, and the composting quality is ensured.
More preferably, the two main ventilation pipes and the corresponding variable frequency blowers and the transition distribution pipes are symmetrically arranged at two ends of the branch ventilation pipes.
More preferably, the ventilation main pipes are at least three, wherein the third ventilation main pipe and the corresponding variable frequency blower and the transition distribution pipe are arranged in the middle of the ventilation branch pipe.
More preferably, the pipe diameter of the main ventilation pipe, the pipe diameter of the transition distribution pipe and the diameter of the air outlet of the variable frequency blower are the same; the pipe diameter of the ventilation branch pipe is smaller than that of the ventilation main pipe or the transition distribution pipe; the sum of the pipe section areas of all the ventilation branch pipes is smaller than the sum of the pipe section areas of all the ventilation main pipes; for each ventilation branch pipe, the sum of the cross-sectional areas of all the air outlet holes of the ventilation branch pipe is smaller than the pipe cross-sectional area of the ventilation branch pipe.
By adopting the preferable scheme, the specific structure of the ventilation pipeline can be further optimized.
Preferably, the power supply unit has a main line air switch, an ac contactor, a dc switching power supply, and a relay switch; the control switch comprises a start button and an emergency stop button which are connected in series, a relay of the relay switch is connected with the start button and the emergency stop button in series, the switch of the relay switch is connected with the start button in parallel, and the alternating current contactor is controlled by the relay of the relay switch; one side of the main line air switch is connected with an external three-phase power supply, and the other side of the main line air switch is respectively connected with a start button, an emergency stop button and an alternating current contactor; the starting button and the emergency stop button are positioned in front of the alternating current contactor; the fan control unit, the signal acquisition unit and the direct-current switch power supply are respectively connected with the alternating-current contactor; the central control unit is connected with the direct-current switch power supply.
By adopting the preferable scheme, the power supply mode of the power supply unit can be further optimized.
In the utility model, the signal acquisition unit acquires various indexes (such as temperature, air volume, air pressure, oxygen content and the like) of a compost pile site, the central control unit intelligently fits and calculates control parameters of the variable-frequency blower according to data sent by the signal acquisition unit and control instructions of the control switch and the control parameters input by the touch screen, relevant information is displayed on the touch screen, and the fan control unit controls the variable-frequency blower according to the control parameters, thereby completing the intelligent control of the ventilation volume in the aerobic composting process.
Drawings
The utility model will be further described with reference to the accompanying drawings.
Fig. 1 is an overall schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic front surface view of a chassis according to an embodiment of the present invention.
Fig. 3 and 4 are schematic electrical connection diagrams of embodiments of the present invention.
Fig. 5 to 8 are related schematic diagrams of specific examples of the embodiment of the present invention.
Detailed Description
Example 1
As shown in fig. 1 to 8, the intelligent compost ventilation control system of the embodiment includes a control cabinet, a signal acquisition unit and a variable frequency blower; the control cabinet is provided with a case, the front surface of the case is provided with a touch screen 01 and an operation switch, and a power supply unit, a central control unit and a fan control unit are arranged in the case; the touch screen 01, the control switch, the signal acquisition unit, the central control unit and the fan control unit are respectively connected with the power supply unit; the signal acquisition unit comprises a group of signal sensors positioned on the compost pile site, and the signal output end of each signal sensor is connected with the signal input end of the central control unit; the data exchange end of the touch screen 01 is connected with the data exchange end of the central control unit; the control end of the control switch is connected with the controlled end of the central control unit; the variable frequency blower is connected with the fan control unit, and the controlled end of the fan control unit is connected with the control end of the central control unit.
Specifically, (1) as shown in fig. 4, and as illustrated in fig. 7, the signal sensor is an analog quantity sensor or a digital quantity sensor; the central control unit comprises a CPU programmable logic controller and an AD programmable controller analog input module; the AD programmable controller analog input module is provided with an input end connected with the signal output end of the analog sensor, and an output end connected with the first input end of the CPU programmable logic controller; and the signal output end of the digital quantity sensor is connected with a second input end of the CPU programmable logic controller through a network transmission module.
(2) As shown in fig. 4, and as exemplified in fig. 6 and 7, the fan control unit includes a filter and a frequency converter, one end of the filter is connected with the power supply unit, and the other end thereof is connected with one end of the frequency converter, and the other end of the frequency converter is connected with the variable frequency blower; the controlled end of the frequency converter is superposed with the controlled end of the fan control unit; the central control unit also comprises a DA programmable controller analog quantity output module, the DA programmable controller analog quantity output module is provided with an input end connected with a control end of the CPU programmable logic controller, and an output end connected with a controlled end of the frequency converter; the control end of the CPU programmable logic controller is superposed with the control end of the central control unit.
In this embodiment, the signal acquisition unit includes a flow meter, a thermometer, a barometer, and an oxygen content meter; the network transmission module is a serial server with a Modbus gateway. In addition, the variable frequency blower is also provided with a fan, the fan control unit also comprises a fan switch, and the fan switch is connected with the power supply unit. Note: the fan is a cooling component in a variable frequency blower, and a 3KW variable frequency blower is generally matched with a 100W fan.
(3) As shown in fig. 4, the manipulation switches include a manual/automatic control changeover switch SA2, and a local/remote control changeover switch SA 1; the control ends of the control switches comprise a control end of a manual/automatic control change-over switch SA2 and a control end of a local/remote control change-over switch SA 1; the controlled end of the CPU programmable logic controller is superposed with the controlled end of the central control unit; the control end of the manual/automatic control change-over switch SA2 and the control end of the local/remote control change-over switch SA1 are respectively connected with the controlled end of the CPU programmable logic controller.
As shown in fig. 1, the system of the present embodiment further includes a ventilation duct, which includes a ventilation main pipe 31, a transition distribution pipe 32, and a ventilation branch pipe 33; the air inlet of the ventilation pipeline is arranged on the ventilation main pipe 31, and the air outlet of the ventilation pipeline is arranged on the ventilation branch pipe 33; the number of the air inlets corresponds to that of the main ventilation pipes 31 one by one; the air outlet holes are distributed along the length direction of the ventilation branch pipe 33; the ventilation main pipe 31 is communicated with a transition distribution pipe 32, and the transition distribution pipe 32 is communicated with a ventilation branch pipe 33; the transition distribution pipes 32 correspond to the main ventilation pipes 31 one by one; the number of the main ventilation pipes 31 is at least two, wherein two main ventilation pipes 31 are arranged at two ends of the branch ventilation pipes 33, and the two main ventilation pipes 31 are communicated with the corresponding tail ends of the branch ventilation pipes 33 through the transition pipes 32; the number of the variable frequency blowers is in one-to-one correspondence with the main ventilation pipes 31, and the air outlets of the variable frequency blowers are communicated with the air inlets of the corresponding main ventilation pipes 31. Two main ventilation pipes 31 and corresponding variable frequency blowers and transition distribution pipes 32 are symmetrically arranged at two ends of the branch ventilation pipes 33. Furthermore, alternatives (not shown in the figures) are also possible: the number of the main ventilation pipes 31 is at least three, wherein the first two main ventilation pipes 31 are the same as the first ones, and the third main ventilation pipe 31 and the corresponding variable frequency blower and transition distribution pipe 32 are arranged in the middle of the branch ventilation pipes 33.
The pipe diameter of the main ventilation pipe 31, the pipe diameter of the transition distribution pipe 32 and the diameter of the air outlet of the variable frequency blower are the same; the pipe diameter of the vent branch pipe 33 is smaller than that of the vent main pipe 31 or the transition distribution pipe 32; the sum of the pipe sectional areas of all the ventilation branch pipes 33 is smaller than the sum of the pipe sectional areas of all the ventilation main pipes 31; for each of the ventilation branch pipes 33, the sum of the sectional areas of all the air outlet holes of the ventilation branch pipe 33 is smaller than the pipe sectional area of the ventilation branch pipe 33.
Further, as illustrated in fig. 5, the power supply unit has a main line air switch, an ac contactor, a dc switching power supply, and a relay switch; the control switch also comprises a starting button SB1 and an emergency stop button SBE which are connected in series, a relay of the relay switch is connected in series with the starting button SB1 and the emergency stop button SBE, the switch of the relay switch is connected in parallel with the starting button SB1, and the alternating current contactor is controlled by the relay of the relay switch; one side of the main line air switch is connected with an external three-phase power supply, and the other side of the main line air switch is respectively connected with a starting button SB1, an emergency stop button SBE and an alternating current contactor; the start button SB1 and the scram button SBE are located before the AC contactor; the fan control unit, the signal acquisition unit and the direct-current switch power supply are respectively connected with the alternating-current contactor; the central control unit is connected with the direct-current switch power supply.
In the specific implementation of the embodiment, the signal acquisition unit acquires various indexes (such as temperature, air volume, air pressure, oxygen content and the like) of a compost pile site, the central control unit intelligently fits and calculates control parameters of the variable-frequency blower according to data sent by the signal acquisition unit and by combining control instructions of the control switch and the control parameters input by the touch screen 01, the blower control unit controls the variable-frequency blower according to the control parameters, and meanwhile, related information is displayed on the touch screen 01, so that the intelligent control of the ventilation in the aerobic composting process is completed.
Specific examples of the present embodiment are shown in fig. 5 to 8.
In fig. 5, QF0, main line air switch, KM0, linked ac contactor and relay switch, SB1, start button, SBE, scram button, FAN1, FAN2, cabinet with FAN, 24VDC, 24V 100W dc switch power supply, DVP16EH, CPU programmable logic controller.
In FIG. 6, WD 920-8-filter (variable frequency input dedicated filter), VFD037E 43A-frequency converter. In frequency converter VFD037E 43A: r, S, T-frequency converter is connected with filter phase line binding post, ACI, ACM-analog variable frequency input (output) module, U, V, W-frequency converter is connected with fan phase line binding post, MI1, MI 3-forward and reverse rotation binding post, DCM-common station. U1, V1 and W1 are phase line terminals of the blower, PE1 is a protective neutral line terminal of the blower, and KM2 and KM3 are relays. RA and RC (resistor-capacitor) frequency converter input terminals, KM1 AC contactor with relay, U2, V2 and W2 wiring terminals of phase lines of fan fans, and PE2 wiring terminals of protection zero lines of fan fans.
In fig. 7, DVP-16EH00T3, which is a CPU programmable logic controller, includes X0, X1, X2, X3, X4, X5, X6, X7, switching value output terminals, YO, C0, Y1, C1, Y2, C2, Y3, and C3, switching value input terminals, S/S, which is a common terminal, and 485+ 485, which is a CPU485 communication interface. KM2, KM3, KM4, KM 5-relay, SA1, SA 2-double throw switch. DVP-04 AD-H3-AD programmable logic controller analog input module, wherein V1+, I1+ and V1-are AD flowmeter analog output wiring terminals, and A1+ and A1-are analog sensor input modules. DVP-04 DA-H3-DA programmable logic controller analog output module, wherein, I1+, COM 1-DA output terminal, ACI, ACM-input module. ZLAN 5200-serial server, 485+ and 485-serial server 485 communication interface. HR1 is a power indicator light.
In fig. 8, power supply inlet: l1, L2, L3-phase line, N-working neutral line, PE-protective neutral line. A fan power supply: u1, V1, W1-fan phase line terminal, PE 1-fan protection zero line terminal. 24V power supply: 24V, GND-24V DC power supply output terminal. Molding: a1+ and A1-are analog input terminals; a fan power supply: u2, V2, W2-fan phase line terminal, PE 2-fan protection zero line terminal.
The following are specific example parameters:
the length, width and height of the case are 80 multiplied by 60 multiplied by 30 cm; the type of the main line air switch is NXB-63C 25; the terminal block is U6 (note: the terminal block is used to integrate each interface); the model number of a fan in the case is DP200A, and the power of the motor is 15 (W); the type of the alternating current contactor is NXC-18; the relay adopts RJ 25-CL-D24.
The filter model is WD 920-8; the model of the frequency converter is VFD037E 43A; the direct current switch power supply is a 24V switch power supply, and the model is LRS-50-24; the fan of the fan is a fan with the fan; the fan switch of the fan adopts an alternating current contactor with a relay, wherein the alternating current contactor is NXC-9 in model number, and the relay is RJ25-CL-D24 in model number.
The model of the CPU programmable logic controller is DVP-16EH00T3, and the model of the AD programmable logic controller analog input module is DVP-04 AD-H3; the model number of the DA programmable logic controller analog output module is DVP-04 DA-H3.
The network transmission module adopts a serial server with the model number of ZLAN5200 and is provided with a 485 communication interface and a Modbus gateway.
The front surface of the case is also provided with a power indicator light. The touch screen is an industrial configuration touch screen, and the model is TPC 1062K. The contents displayable or interactive on the touch screen comprise frequency (Hz), ventilation volume (m)3) Setting ventilation time (min), interval time (min), displaying in manual/automatic/local/remote modes, displaying accumulated air quantity, displaying real-time air quantity, displaying monitoring data such as temperature, pressure and oxygen content.
The functions that can be realized by the manual/automatic control change-over switch and the local/remote control change-over switch are shown in the following table:
| parameter \ mode | Local-manual | Local-automatic | Remote |
| Frequency setting (Hz) | √ | √ | |
| Target ventilation volume (m3) | √ | √ | |
| Ventilation time (min) | √ | √ | |
| Interval time (min) | √ | √ |
The model of the variable frequency blower is 4-72-3.6A-3kw, the air quantity is 2664-3H and the nominal diameter of the air outlet is 315 cm.
The nominal diameter of the main ventilation pipe and the transition distribution pipe is 30 cm.
The nominal diameter of the ventilation branch pipe is 14cm, the length of the ventilation branch pipe is 25m, the diameter of the air outlet hole is 15mm, and the distance between the air outlet holes is 0.5 m.
The electric components of the present embodiment are each constituted by conventional electronic components. The present embodiment relates only to the use of a software control program and there is no improvement to the software control program itself.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (10)
1. An intelligent compost ventilation control system comprises a control cabinet, a signal acquisition unit and a variable frequency blower; the control cabinet is characterized by comprising a case, wherein the front surface of the case is provided with a touch screen and an operation switch, and a power supply unit, a central control unit and a fan control unit are arranged in the case; the touch screen, the control switch, the signal acquisition unit, the central control unit and the fan control unit are respectively connected with the power supply unit; the signal acquisition unit comprises a group of signal sensors positioned on the compost pile site, and the signal output end of each signal sensor is connected with the signal input end of the central control unit; the data exchange end of the touch screen is connected with the data exchange end of the central control unit; the control end of the control switch is connected with the controlled end of the central control unit; the variable frequency blower is connected with the fan control unit, and the controlled end of the fan control unit is connected with the control end of the central control unit.
2. A smart compost ventilation control system as claimed in claim 1 wherein said signal sensor is an analog or digital sensor; the central control unit comprises a CPU programmable logic controller and an AD programmable controller analog input module; the AD programmable controller analog quantity input module is provided with an input end connected with a signal output end of the analog quantity sensor, and an output end connected with a first input end of the CPU programmable logic controller; and the signal output end of the digital quantity sensor is connected with a second input end of the CPU programmable logic controller through a network transmission module.
3. An intelligent compost ventilation control system as claimed in claim 2, wherein said fan control unit comprises a filter and a frequency converter, one end of said filter is connected to the power supply unit and the other end thereof is connected to one end of the frequency converter, the other end of said frequency converter is connected to the variable frequency blower; the controlled end of the frequency converter is superposed with the controlled end of the fan control unit; the central control unit also comprises a DA programmable controller analog quantity output module, wherein the input end of the DA programmable controller analog quantity output module is connected with the control end of the CPU programmable logic controller, and the output end of the DA programmable controller analog quantity output module is connected with the controlled end of the frequency converter; and the control end of the CPU programmable logic controller is superposed with the control end of the central control unit.
4. A smart compost aeration control system as claimed in claim 3 wherein said signal acquisition unit includes a flow meter, thermometer, barometer, oxygen content meter; the network transmission module is a serial server with a Modbus gateway; the variable frequency blower is further provided with a fan, the fan control unit further comprises a fan switch, and the fan switch is connected with the power supply unit.
5. A smart compost ventilation control system as claimed in claim 3 wherein said manipulation switches include manual/automatic control transfer switches, and local/remote control transfer switches; the control end of the control switch comprises a control end of a manual/automatic control change-over switch and a control end of a local/remote control change-over switch; the controlled end of the CPU programmable logic controller is superposed with the controlled end of the central control unit; and the control end of the manual/automatic control change-over switch and the control end of the local/remote control change-over switch are respectively connected with the controlled end of the CPU programmable logic controller.
6. An intelligent compost ventilation control system as claimed in claim 1, further comprising ventilation ducts, said ventilation ducts comprising main ventilation ducts, transition distribution ducts and branch ventilation ducts; the air inlet of the ventilation pipeline is arranged on the ventilation main pipe, and the air outlet of the ventilation pipeline is arranged on the ventilation branch pipe; the number of the air inlets corresponds to that of the main ventilation pipes one by one; the air outlet holes are distributed along the length direction of the ventilation branch pipe; the ventilation main pipe is communicated with a transition distribution pipe, and the transition distribution pipe is communicated with a ventilation branch pipe; the transition distribution pipes correspond to the ventilation main pipes one by one; the number of the main ventilation pipes is at least two, wherein the two main ventilation pipes are arranged at two ends of the branch ventilation pipes and are communicated with the corresponding tail ends of the branch ventilation pipes through transition distribution pipes; the number of the variable frequency air blowers corresponds to the number of the main ventilation pipes one by one, and the air outlets of the variable frequency air blowers are communicated with the air inlets of the corresponding main ventilation pipes.
7. A ventilation control system for intelligent compost as claimed in claim 6, wherein said two main ventilation pipes and corresponding variable frequency blowers and transition distribution pipes are symmetrically disposed at both ends of the branch ventilation pipes.
8. A ventilation control system for intelligent compost as claimed in claim 6, wherein said ventilation main pipes are at least three, and wherein the third ventilation main pipe and corresponding variable frequency blower and transition distribution pipe are located in the middle of the ventilation branch pipe.
9. An intelligent compost ventilation control system as claimed in claim 6, wherein the pipe diameter of said main ventilation pipe, the pipe diameter of transition distribution pipe and the diameter of air outlet of variable frequency blower are the same; the pipe diameter of the ventilation branch pipe is smaller than that of the ventilation main pipe or the transition distribution pipe; the sum of the pipe section areas of all the ventilation branch pipes is smaller than the sum of the pipe section areas of all the ventilation main pipes; for each ventilation branch pipe, the sum of the cross-sectional areas of all the air outlet holes of the ventilation branch pipe is smaller than the pipe cross-sectional area of the ventilation branch pipe.
10. A smart compost ventilation control system as claimed in any of claims 1 to 9 wherein said power supply unit has a main line air switch, an ac contactor, a dc switching power supply, and a relay switch; the control switch comprises a start button and an emergency stop button which are connected in series, a relay of the relay switch is connected with the start button and the emergency stop button in series, the switch of the relay switch is connected with the start button in parallel, and the alternating current contactor is controlled by the relay of the relay switch; one side of the main line air switch is connected with an external three-phase power supply, and the other side of the main line air switch is respectively connected with a start button, an emergency stop button and an alternating current contactor; the starting button and the emergency stop button are positioned in front of the alternating current contactor; the fan control unit, the signal acquisition unit and the direct-current switch power supply are respectively connected with the alternating-current contactor; the central control unit is connected with the direct-current switch power supply.
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| CN202120769839.7U CN215376125U (en) | 2021-04-15 | 2021-04-15 | Intelligent compost ventilation control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114478098A (en) * | 2022-01-19 | 2022-05-13 | 正耐电气股份有限公司 | Aerobic fermentation compost electrical system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114478098A (en) * | 2022-01-19 | 2022-05-13 | 正耐电气股份有限公司 | Aerobic fermentation compost electrical system |
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