CN113464401B - Hot air circulation system of air-cooled air compressor and control method - Google Patents
Hot air circulation system of air-cooled air compressor and control method Download PDFInfo
- Publication number
- CN113464401B CN113464401B CN202110759271.5A CN202110759271A CN113464401B CN 113464401 B CN113464401 B CN 113464401B CN 202110759271 A CN202110759271 A CN 202110759271A CN 113464401 B CN113464401 B CN 113464401B
- Authority
- CN
- China
- Prior art keywords
- air
- air compressor
- chip microcomputer
- single chip
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a hot air circulation system of an air-cooled air compressor and a control method, belonging to the field of waste heat recovery, and comprising an upper computer, a single chip microcomputer module, a power converter, a digital collector DS1820, an air compressor unit, and one end of a ventilation pipeline fixedly connected with the exhaust end of the air compressor unit of the hot air circulation system, wherein the other end of the ventilation pipeline is connected with outdoor atmosphere, the ventilation pipeline is provided with jacks, plugboards matched with the jacks, guide rails arranged at the two ends of the plugboards, and a ball screw pair, the ball screw pair comprises a nut assembly fixedly connected with one end of the plugboard and used for moving the plugboard along the guide rails, a screw matched with the nut assembly, and a bearing seat fixedly connected with one end of the ventilation pipeline and used for supporting the screw, and a motor seat at the other end, the motor seat is fixedly connected with a stepping motor used for driving the screw, and the plugboards can block, adjust or communicate air flow in the ventilation pipeline by linearly and freely reciprocating in the jacks.
Description
Technical Field
The invention relates to the field of air compressor waste heat recovery, in particular to an air-cooled air compressor waste heat recovery and utilization system and a control method.
Background
The air compressor is a common power device, is a device for converting mechanical energy into gas pressure energy, and is simply an air pressure generating device for compressing air, and the air compressor mainly supplies air to provide gas required by production.
The air compressor is widely applied in China, particularly the market share of the air-cooled air compressor is particularly prominent, for example, the air-cooled air compressor is adopted in biochemical engineering projects, garbage power station projects, gas turbine projects and the like, wherein in the existing large and medium-sized projects, the waste heat sampling heat exchange type centralized processing and distribution of the air-cooled air compressor needs a whole set of ventilation air conditioning system, the manufacturing cost is high, wherein the existing small and medium-sized projects air-cooled air compressor directly sucks air from the indoor, the air sucked by mechanical energy is discharged out of the room with the heat along with the fluidity of the air, the working environment of the air compressor is kept in a proper working range, if a plant area is located in a severe cold area, and when a heating facility needs to be arranged in winter, the heating facility such as a ventilation air conditioner, a radiator and the like needs to be built in an air compressor plant, and the existing air-cooled air compressor waste heat recovery system has low automation degree and incomplete control process, so that the waste of human resources, capital costs and resources are caused without the existing heat energy.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the hot air circulation system and the control method of the air-cooled air compressor, and the air compressor workshop can be used for accurately and automatically adjusting the temperature of the air compressor workshop without additionally constructing a ventilation and air conditioning system.
In order to solve the technical problem, the control system adopted by the invention is as follows: the air pipe is provided with a jack and a jack matched with a guide rail, the jack is provided with an inserting plate which moves under the driving of a ball screw pair, the air pipe at the upstream indoor section of the jack is provided with an air outlet, a cover plate door is arranged on the air outlet, one end of the cover plate door is connected with the air pipe through a hinge, and a steering engine which is fixedly connected with the air pipe and drives the cover plate door to move is arranged between the outer wall of the air pipe and the cover plate door;
the air-cooled air compressor hot air circulation system further comprises an upper computer, a single chip microcomputer module, a power converter and a digital collector DS1820, wherein the upper computer is interacted with the single chip microcomputer module, the single chip microcomputer module outputs a pulse string to control a stepping motor through the power converter, the single chip microcomputer module outputs PWM to control a steering engine, and the single chip microcomputer module collects and analyzes data collected by the digital collector DS 1820;
the control method of the hot air circulating system of the air-cooled air compressor comprises the following steps:
s1: when the system is started, the steering engine closes the cover plate door and the inserting plate is opened;
s2: adjusting an initial value S (a) in a single chip microcomputer module program through an upper computer;
s3: a signal C (a) acquired by the DS1820 is transmitted to the singlechip module for periodic capture;
s4: the singlechip module calculates a deviation value P (a) = C (a) -S (a);
s5: the single chip microcomputer module (100) judges the relation between the deviation value P (a) and the hysteresis value xi and the hysteresis value mu, the step S7 is carried out when the deviation value P (a) changing in the positive direction is larger than xi, and the step S6 is carried out when the deviation value P (a) changing in the negative direction is smaller than mu;
s6: the single chip microcomputer module (100) runs a PID control algorithm, outputs PWM to control a steering engine to open a cover plate door through the control algorithm, outputs pulse strings to control the angular displacement of a stepping motor through a power converter to move a plug board position and adjust the amount of gas discharged to the outside from the ventilation pipeline; wherein the PID control algorithm is calculated according to the formula U (a) = Kp [ P (a) -P (a-1) ] + KiP (a) + Kd [ P (a) -2P (a-1) + P (a-2) ], wherein U (a) represents a control quantity, kp represents a proportionality coefficient, ki represents an integral coefficient, kd represents a differential coefficient, mu represents a hysteresis value, and a is a variable; after the output is finished, the capture cycle is finished, and the step S8 is entered;
s7: the single chip microcomputer module (100) outputs PWM to control a steering engine to close a cover plate door, and the single chip microcomputer module (100) outputs pulse strings to control the stepping motor (A3) to move an inserting plate through a power converter (101) so as to enable a ventilation pipeline to be completely unobstructed; after the output is finished, the capture cycle is finished, and the step S8 is entered;
s8: returning to the initial value S (a) before loading, in which the initial value S (a) can be reset, the above-described processes S2 to S8 are cyclically executed.
The control system of the invention is further improved in that: the ball screw pair comprises a nut assembly fixedly connected to one end of the inserting plate and used for moving the inserting plate along the guide rail, a lead screw matched with the nut assembly, and a motor base fixedly connected to the ventilating duct and used for supporting a bearing seat at one end of the lead screw and the other end of the lead screw, wherein the motor base is fixedly connected with a stepping motor used for driving the lead screw.
The control system of the invention is further improved in that: and a two-link mechanism for opening, adjusting and closing the cover plate door is arranged between the output end of the steering engine and the cover plate door and comprises a driving connecting rod and a driven connecting rod, one end of the driven connecting rod is hinged with the cover plate door through a pin shaft, the other end of the driven connecting rod is connected with one end of the driving connecting rod through a rotating shaft, and the other end of the driving connecting rod is fixedly connected with the output end of the steering engine.
The control system of the invention is further improved in that: the range of the initial value S (a) in the step S2 is limited to be consistent with the data output at 26-39 ℃ collected by the DS1820, and the initial value S (a) is adjusted and operated by configuration software of an upper computer.
The control system of the invention is further improved in that: the time efficiency of outputting one data by the DS1820 collector in the step S3 is 15us, and the data period of capturing the DS1820 by the single chip microcomputer module is set to be 60S.
The control system of the invention is further improved in that: and S4, the singlechip module calculates an offset value P (a) = C (a) -S (a), stores the offset value in a certain space area of the RAM in the singlechip module every time, and stores the data in a queue mode.
The control system of the invention is further improved in that: in the step S5, the control process adopts hysteresis control, η = ξ - μ where η denotes a hysteresis threshold value, ξ denotes a hysteresis value, and μ denotes a hysteresis value.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the temperature of the working environment of the air compressor workshop can be adjusted through the process, so that the existing heat can be utilized, heating facilities can not be built in the air compressor workshop, the temperature of the working environment of the air compressor workshop can be accurately and automatically adjusted through a PID algorithm, the control method effectively avoids the frequent switching of two branches due to the fluctuation of a deviation value P (a) above and below a threshold value by using hysteresis control, and the acquired value of the temperature of the air compressor workshop lags behind the temperature of the air compressor workshop after the heat is exhausted from the air outlet of the air compressor, so that the data cycle of DS1820 captured by the singlechip module is set to 60s, and the redundant actions of the plugboard and the cover board door are reduced in the period.
Therefore, the existing heat waste is avoided, the construction cost is saved, the temperature can be automatically adjusted, energy conservation and emission reduction are advocated, the energy waste is reduced, and the stability and the reliability of the system are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of the control system of the present invention;
FIG. 3 is a schematic view of a portion of the present invention;
FIG. 4 is a cross-sectional view taken along line 1A-1A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line 2A-2A of FIG. 4;
FIG. 6 is a schematic view of a portion of the present invention;
FIG. 7 is a schematic diagram of the right view of FIG. 6;
FIG. 8 is a schematic view of a portion of the structure of FIG. 6;
FIG. 9 is a schematic control flow diagram of the present invention;
FIG. 10 is a timing diagram for driving the stepper motor of the present invention;
FIG. 11 is a PWM timing diagram of the drive steering engine of the present invention;
FIG. 12 is a hysteresis control schematic of the present invention;
the air-cooled air compressor comprises an air-cooled air compressor body 1, an air duct 2, an A1, an inserting plate, an A2, an inserting hole, an A3, a stepping motor, an A4, a ball screw pair, an A5, a guide rail, an A41, a horizontal bearing seat, an A42, a lead screw, an A43, a nut assembly, an A44, a motor seat, a B1, a cover plate door, a B2, a two-link mechanism, a B3, a steering engine, a B5, an air outlet, a B21, a driving connecting rod, a B22, a driven connecting rod, a 100, a single-chip microcomputer module, a 101, a power converter, 102, an upper computer, a 104 and a digital collector DS1820.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
the utility model provides an air-cooled air compressor machine heated air circulation system and control method, as shown in fig. 1 to fig. 12, including air compressor machine unit 1 and the 2 one ends of ventilation pipe of fixed connection at 1 exhaust end of air compressor machine unit of heated air circulation system, the 2 other ends of ventilation pipe insert outdoor atmosphere, its characterized in that: the air duct 2 is provided with a jack A2, a jack A2 matched plug board A1 and guide rails A5 arranged at two ends of the plug board A1, and further comprises a ball screw pair A4, the ball screw pair A4 comprises a nut assembly A43 fixedly connected to one end of the plug board A1 and used for moving the plug board along the guide rails A5, a screw A42 matched with the nut assembly A43 and a motor base A44 fixedly connected to one end of the air duct and used for supporting a bearing seat A41 at one end of the screw A42 and the other end of the screw A42, the motor base is fixedly connected with a stepping motor A3 used for driving the screw A42, the plug board A1 can block, adjust or communicate air flow in the air duct 2 in a linear free reciprocating motion mode at the jack A2, the air duct 2 at an upstream indoor section of the jack A2 is provided with an air outlet B5, a cover board door B1 is arranged on the air outlet B5, one end of the cover board door B1 is connected with the air duct 2 through a hinge, the cover board door B1 is blocked, the air flow in the air duct B1 is outwards released through the hinge mode, a connecting rod B3 fixedly connected with the cover board B2 through a hinge pin shaft B21, and a connecting rod B22 are connected with a driven connecting rod B22 connected with one end of the other end of the steering engine B21, and a driven connecting rod B22, and the other end of the steering engine B2 are connected with the steering engine B22, and the other end of the steering engine B2 are connected with the steering engine B22;
the air-cooled air compressor hot air circulating system further comprises an upper computer 102, a single chip microcomputer module 100, a power converter 101 and a digital collector DS1820, the upper computer 102 is interactive with the single chip microcomputer module 100, a pulse string output by the single chip microcomputer module 100 controls a stepping motor through the power converter 101, the single chip microcomputer module 100 outputs PWM to control a steering engine, and the single chip microcomputer module 100 collects and analyzes data collected by the digital collector DS1820.
Above-mentioned fixed connection can be the welding, flange joint, staple bolt formula is connected or riveting etc, picture peg A1 can adopt clearance fit with jack A2, any kind can restrict except that the direction of picture peg subassembly straight reciprocating motion and influence the minimum machinery of air current in the air pipe and accord with the designing requirement among the optional prior art of guide rail, also can adopt the section bar among the prior art to guarantee picture peg subassembly straight reciprocating motion and influence air pipe air current minimum, the section bar can choose for use the angle steel, the channel-section steel, round steel or band steel etc. the section bar of chooseing for use and the inboard fixed connection of air pipe, the connected mode can choose for use any kind of prior art can be the section bar and air pipe connected mode together, for example: welding, riveting, bonding, etc.
Nut assembly A43 can be split type constitution of nut and nut support, also can be nut and nut support integral type, and bearing frame A41 chooses for use the horizontal bearing frame A41 that is used for supporting lead screw A42 one end among the prior art for use, and steering wheel B3 chooses for use any kind among the prior art and satisfies the design requirement.
Host computer and host computer management software can choose any one among the prior art for use, for example: the host computer can be Siemens or Kunlun state, and host computer management software can be configuration king or WINcc, and the singlechip module chooses any one and satisfies the design requirement of prior art for example STC89C51RC, STC89C58RD etc. of 51 kernels, the STM32 series of ARM kernel, power converter chooses the driver that can match with step motor, steering engine technical parameter in the prior art.
The upper computer and the singlechip module are communicated by adopting any one of a monodbus protocol and a can protocol and then are transmitted by an RS485 protocol. The control method comprises the following steps:
s1: when the system is started, the cover plate door and the inserting plate are closed by the steering engine and opened.
S2: the initial value S (a) in the single chip microcomputer module program is adjusted through the upper computer, the range of the initial value S (a) is limited to the condition that data output at 26-39 ℃ are collected by the DS1820 to be consistent, and for example, the initial value S (a) is adjusted through configuration software of the upper computer to operate.
S3: the signal C (a) that DS1820 gathered sends to single chip module and catches periodically, DS1820 collector output a data age is 15us, because air compressor machine factory building temperature collection value lags behind the air compressor machine air outlet exhaust heat the temperature of air compressor machine factory building, so single chip module catches DS 1820's data cycle and sets up in 60s, for this reason, has reduced picture peg and apron door unnecessary action during.
S4: the singlechip module calculates an offset value P (a) = C (a) -S (a), wherein the singlechip module calculates the offset value P (a) = C (a) -S (a) and stores the offset value P (a) in a certain space area of a RAM in the singlechip module every time, data is stored in a queue mode, and the stored data is used for later data analysis and processing.
S5: the singlechip module judges the relation between the deviation value P (a) and a hysteresis value xi and a hysteresis value mu, if the deviation value P (a) of positive change is larger than xi, the step S7 is carried out, if the deviation value P (a) of negative change is smaller than mu, the step S6 is carried out, the control process of the step S5 adopts hysteresis control and a hysteresis formula: eta = ξ -mu, where eta represents the hysteresis threshold, ξ represents the hysteresis value, mu represents the hysteresis value, a represents a variable, the values in a represent current order, ξ values are preferably set to 5, and eta values are preferably set to 5.
S6: the singlechip module runs a PID algorithm:
u (a) = Kp [ P (a) -P (a-1) ] + KiP (a) + Kd [ P (a) -2P (a-1) + P (a-2) ]; the single chip microcomputer module outputs PWM through a PID algorithm to control a steering engine to open a cover plate door, the single chip microcomputer module outputs pulse strings to control the angular displacement of a stepping motor through a power converter to move the positions of inserting plates to adjust the amount of gas discharged to the outside from the air duct, the capture cycle is completed after the output is completed, and the step S8 is entered;
the algorithm U (a) = Kp [ P (a) -P (a-1)]+KiP(a)+Kd[P(a)-2P(a-1)+P(a-2)]Wherein U (a) represents a control amount, kp represents a proportional coefficient, ki represents an integral coefficient, kd represents a differential coefficient, P (a-1) Represents the last deviation value, P (a-2) represents the last deviation value, a is a variable, kp is preferably set to 0.5, ki is preferably set to 0.8, and Kd is preferably set to 0.6.
S7: the singlechip module outputs PWM to control a steering engine to close a cover plate door, and the singlechip module outputs pulse strings to control the angular displacement of a stepping motor to move a plug board through a power converter so that the ventilation pipeline is completely unobstructed; after the output is finished, the capture cycle is finished, and the step S8 is entered;
s8: after S9 is completed, the process returns to the initial value S (a) before loading, in which the initial value S (a) can be reset, and the processes S2 to S8 are performed in a loop.
Working principle or using method:
the application relates to a hot air circulation system of an air-cooled air compressor and a control method, as shown in figures 1 to 12, the working process is as follows: when the air-cooled air compressor hot air circulation system works, after the air-cooled air compressor hot air circulation system is started, the automatic system plug board assembly is opened, the steering engine cover board is closed, then an initial value S (a) is manually set for the single chip microcomputer, real-time signals acquired by the digital acquisition device DS1820 are periodically captured by the single chip microcomputer, the period capture time is loaded in a program, the period capture time is larger than the acquisition period of the digital acquisition device DS1820, a certain space is applied to an RAM in the single chip microcomputer, a deviation value of the difference between data periodically captured by the single chip microcomputer and the initial value S (a) is placed in the applied space in a queue form, if the deviation value P (a) of real-time forward change is larger than or equal to xi, the single chip microcomputer outputs PWM to continuously control the steering engine to close the cover board door through a power converter, and the single chip microcomputer outputs a pulse string to continuously control the stepping motor to move the plug board assembly to keep the ventilation pipeline completely unobstructed through the power converter; if the deviation value P (a) of the real-time negative change is less than or equal to mu, which indicates that the indoor environment temperature is less than or equal to the set temperature, the data stored in the RAM applied in advance passes through a control algorithm: u (a) = Kp [ P (a) -P (a-1) ] + KiP (a) + Kd [ P (a) -2P (a-1) + P (a-2) ] singlechip output PWM continues to control the steering engine to open the cover plate door through the power converter, the singlechip output pulse train continues to control the stepping motor to move the inserting plate assembly through the power converter to adjust the gas flow in the ventilating duct, the process is carried out circularly from DS1820 signal acquisition to capturing period, wherein the initial value S (a) can be changed at any time to adjust the temperature of the air compressor plant.
Therefore, the temperature regulation is realized by blocking, adjusting and communicating air flow in the ventilation pipeline through the cover plate angle adjustment and the inserting plate assembly, and the two processes can adjust the working environment temperature of the air compressor workshop through automatic flexible matching.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (7)
1. The utility model provides an air-cooled air compressor machine hot air circulating system control method, air-cooled air compressor machine hot air circulating system includes air compressor machine unit (1) and fixed connection air pipe (2) at air compressor machine unit (1) exhaust end of hot air circulating system, and outdoor atmosphere, its characterized in that are inserted to air pipe (2) other end: the ventilating duct (2) is provided with a jack (A2), the jack (A2) is provided with an inserting plate (A1) which moves under the driving of a ball screw pair (A4) through a guide rail (A5) in a matching way, the ventilating duct (2) at the upstream indoor section of the jack (A2) is provided with a gas outlet (B5), the gas outlet (B5) is provided with a cover plate door (B1), one end of the cover plate door (B1) is connected with the ventilating duct (2) through a hinge, and a steering engine (B3) which is fixedly connected with the ventilating duct (2) and drives the cover plate door (B1) to move is arranged between the outer wall of the ventilating duct (2) and the cover plate door (B1);
the air-cooled air compressor hot air circulation system further comprises an upper computer (102), a single chip microcomputer module (100), a power converter (101) and a digital collector DS1820 (104), wherein the upper computer (102) is interacted with the single chip microcomputer module (100), the single chip microcomputer module (100) outputs pulse strings to control a stepping motor (A3) through the power converter (101), the single chip microcomputer module (100) outputs PWM to control a steering engine (B3), and the single chip microcomputer module (100) collects and analyzes data collected by the digital collector DS1820 (104);
the control method of the hot air circulating system of the air-cooled air compressor comprises the following steps:
s1: when the system is started, the steering engine closes the cover plate door (B1) and the inserting plate (A1) to be opened;
s2: adjusting an initial value S (a) in a program of the singlechip module (100) through the upper computer (102);
s3: a signal C (a) acquired by the DS1820 is transmitted to the singlechip module for periodic capture;
s4: the singlechip module (100) calculates a deviation value P (a) = C (a) -S (a);
s5: the single chip microcomputer module (100) judges the relation between the deviation value P (a) and the hysteresis value xi and the hysteresis value mu, the step S7 is carried out when the deviation value P (a) changing in the positive direction is larger than xi, and the step S6 is carried out when the deviation value P (a) changing in the negative direction is smaller than mu;
s6: the single chip microcomputer module (100) runs a PID control algorithm, outputs PWM to control a steering engine to open a cover plate door through the control algorithm, outputs pulse strings to control the angular displacement of a stepping motor through a power converter to move a plug board position and adjust the amount of gas discharged to the outside from the ventilation pipeline; wherein the PID control algorithm is calculated according to the formula U (a) = Kp [ P (a) -P (a-1) ] + KiP (a) + Kd [ P (a) -2P (a-1) + P (a-2) ], wherein U (a) represents a control quantity, kp represents a proportional coefficient, ki represents an integral coefficient, kd represents a differential coefficient, mu represents a hysteresis value, and a is a variable; after the output is finished, the capture cycle is finished, and the step S8 is entered;
s7: the single chip microcomputer module (100) outputs PWM to control a steering engine to close a cover plate door, and the single chip microcomputer module (100) outputs pulse strings to control the stepping motor (A3) to move an inserting plate through a power converter (101) so as to enable a ventilation pipeline to be completely unobstructed; after the output is finished, the capture cycle is finished, and the step S8 is entered;
s8: returning to the initial value S (a) before loading, in which the initial value S (a) can be reset, the above-described processes S2 to S8 are cyclically executed.
2. The control method of the hot air circulation system of the air-cooled air compressor according to claim 1, characterized in that: ball screw pair (A4) including fixed connection in picture peg (A1) one end be used for along guide rail (A5) remove the nut assembly (A43) of picture peg, with nut assembly (A43) complex lead screw (A42) and fixed connection in air pipe be used for supporting bearing frame (A41) of lead screw (A42) one end and motor cabinet (A44) of the other end, motor cabinet fixed connection is used for step motor (A3) of transmission lead screw (A42).
3. The control method of the hot air circulation system of the air-cooled air compressor according to claim 1, characterized in that: be equipped with two link mechanism (B2) that are used for opening, adjust, close apron door (B1) between steering wheel (B3) output and apron door (B1), two link mechanism (B2) are including initiative connecting rod (B21) and driven connecting rod (B22), and the one end of driven connecting rod (B22) is articulated through the round pin axle with apron door (B1), and the other end of driven connecting rod (B22) is connected through the pivot with the one end of initiative connecting rod (B21), the other end and steering wheel (B3) output fixed connection of initiative connecting rod (B21).
4. The control method of the hot air circulation system of the air-cooled air compressor according to claim 1, characterized in that: the range of the initial value S (a) in the step S2 is limited to correspond to data which are acquired by the DS1820 and output at 26-39 ℃, and the initial value S (a) is adjusted and operated by configuration software of an upper computer.
5. The control method of the hot air circulation system of the air-cooled air compressor according to claim 1, characterized in that: the time efficiency of outputting a data by the DS1820 collector in the step S3 is 15us, and the period of capturing the data of the DS1820 by the single chip microcomputer module is set at 60S.
6. The control method of the hot air circulation system of the air-cooled air compressor according to claim 1, characterized in that: and S4, the singlechip module calculates an offset value P (a) = C (a) -S (a), stores the offset value in a certain space area of the RAM in the singlechip module every time, and stores the data in a queue mode.
7. The control method of the hot air circulation system of the air-cooled air compressor according to claim 1, characterized in that: in the step S5, the control process adopts hysteresis control, η = ξ - μ, where η denotes a hysteresis threshold value, ξ denotes a hysteresis value, and μ denotes a hysteresis value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110759271.5A CN113464401B (en) | 2021-07-05 | 2021-07-05 | Hot air circulation system of air-cooled air compressor and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110759271.5A CN113464401B (en) | 2021-07-05 | 2021-07-05 | Hot air circulation system of air-cooled air compressor and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113464401A CN113464401A (en) | 2021-10-01 |
| CN113464401B true CN113464401B (en) | 2022-10-21 |
Family
ID=77878336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110759271.5A Active CN113464401B (en) | 2021-07-05 | 2021-07-05 | Hot air circulation system of air-cooled air compressor and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113464401B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201129912Y (en) * | 2007-11-16 | 2008-10-08 | 沂源瑞丰高分子材料有限公司 | Heated air circulation heating apparatus of spray drying tower |
| CN103883505A (en) * | 2014-01-17 | 2014-06-25 | 上海集熠节能环保技术有限公司 | Air compressor waste heat recycling control system based on C8051 microprocessor |
| CN204344465U (en) * | 2014-11-14 | 2015-05-20 | 王秉文 | Air compressor exhaust duct air flow regulator |
| CN107131117A (en) * | 2017-04-27 | 2017-09-05 | 深圳思步工业科技有限公司 | A kind of compressed air system and control method |
| CN207080340U (en) * | 2017-05-11 | 2018-03-09 | 中国华电科工集团有限公司 | A kind of air compressor chamber ventilating system |
| CN209621558U (en) * | 2019-02-25 | 2019-11-12 | 中国航空国际建设投资有限公司 | Temperature control system and air compression station in air compression station |
-
2021
- 2021-07-05 CN CN202110759271.5A patent/CN113464401B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201129912Y (en) * | 2007-11-16 | 2008-10-08 | 沂源瑞丰高分子材料有限公司 | Heated air circulation heating apparatus of spray drying tower |
| CN103883505A (en) * | 2014-01-17 | 2014-06-25 | 上海集熠节能环保技术有限公司 | Air compressor waste heat recycling control system based on C8051 microprocessor |
| CN204344465U (en) * | 2014-11-14 | 2015-05-20 | 王秉文 | Air compressor exhaust duct air flow regulator |
| CN107131117A (en) * | 2017-04-27 | 2017-09-05 | 深圳思步工业科技有限公司 | A kind of compressed air system and control method |
| CN207080340U (en) * | 2017-05-11 | 2018-03-09 | 中国华电科工集团有限公司 | A kind of air compressor chamber ventilating system |
| CN209621558U (en) * | 2019-02-25 | 2019-11-12 | 中国航空国际建设投资有限公司 | Temperature control system and air compression station in air compression station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113464401A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102721156B (en) | Central air-conditioning self-optimization intelligent fuzzy control device and control method thereof | |
| CN202734154U (en) | Central air conditioning self-optimization intelligent fuzzy control device | |
| CN102705957B (en) | Method and system for predicting hourly cooling load of central air-conditioner in office building on line | |
| CN101286044B (en) | Coal-burning boiler system steam-temperature mixing modeling method | |
| CN102607143B (en) | Remote monitoring method and remote monitoring system for air conditioners of base stations | |
| CN101865613B (en) | Cooling tower integrated energy-saving system based on power synthesizer and control method thereof | |
| CN114326882B (en) | Environment control method and system suitable for pig raising in building | |
| CN113464401B (en) | Hot air circulation system of air-cooled air compressor and control method | |
| CN110131842A (en) | A kind of spinning and weaving workshop air-conditioning system PLC autocontrol method | |
| CN107940666A (en) | A kind of real-time automatic adjusting control device for classroom New-air purifying system | |
| CN111442457A (en) | Positive pressure intervention device and intervention method for passive building fresh air all-in-one machine | |
| CN203837200U (en) | Central air-conditioner overall energy conservation control device | |
| CN206739528U (en) | A kind of central air conditioner cold source system automatic control system | |
| CN2771712Y (en) | Energy-saving control system for central air conditioner | |
| CN113267061B (en) | Cooling tower control system and control method | |
| CN213175965U (en) | Air compressor machine frequency conversion drive control system | |
| CN210107659U (en) | High-precision indoor temperature and humidity control system | |
| CN208419100U (en) | Web based control laboratory energy conserving system | |
| CN112832565A (en) | Assembled unmanned on duty wisdom ring accuse machine room | |
| CN206556198U (en) | A kind of device for tail end of central air conditioner air conditioner performance analysis | |
| CN220771948U (en) | Shutter blade driving arrangement of natural ventilation type direct air cooling system | |
| CN103673335A (en) | Intelligent operation control device of wall-mounted open cycle solar air collector | |
| CN113847825B (en) | System and method for adjusting cooling water quantity of independent condenser of small induced draft fan turbine | |
| CN211060614U (en) | Dehumidification air volume control mechanism of heat pump drying-machine | |
| CN218512852U (en) | Wisdom agricultural system based on radio communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |