CN204965127U - A high -efficient energy -saving control system for steel pipe quenching water system - Google Patents
A high -efficient energy -saving control system for steel pipe quenching water system Download PDFInfo
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- CN204965127U CN204965127U CN201520737506.0U CN201520737506U CN204965127U CN 204965127 U CN204965127 U CN 204965127U CN 201520737506 U CN201520737506 U CN 201520737506U CN 204965127 U CN204965127 U CN 204965127U
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Abstract
The utility model relates to a quenching control field in the steel pipe production process provides a high -efficient energy -saving control system for steel pipe quenching water system to solve the problem of the wasting of resources that present water pump motor controlling means can't the speed governing leads to, the device includes water pump motor, detection module, frequency conversion control module and PLC controller. The utility model provides a technical scheme controls through increasing frequency conversion control pair of module water pump motor, has reduced the power consumption volume and the water consumption of steel pipe quenching process, has improved the productivity effect.
Description
Technical field
The utility model relates to the quenching control field in steel pipe's production process, particularly a kind of high-efficiency energy-saving control for steel tube quench water system.
Background technology
In current steel pipe process, the steel tube quench system of heat-treatment lines comprises: axial flow water system (middle pressure make-up pump group) and outer water spray system (normal pressure make-up pump group), by axial flow water system and outer water spray system be quenching unit supply in axial flow water, outer trickle, complete steel tube quench.
Axial flow water system (middle pressure make-up pump group) is made up of 5 water pumps, pump motor 450kW, rated voltage 380V, and on existing production line, every platform motor adopts a set of soft starting device to control it.
Outer water spray system (normal pressure make-up pump group) is made up of 3 water pumps, pump motor 220kW, rated voltage 380V, and on existing production line, every platform motor adopts a set of soft starting device to control it.
But, because pump motor is by peak load operating condition design, therefore power is large, after particularly adopting soft starting device to control, this device can keep top speed to run after starting, but in the production run of reality, the consumption of water changes greatly along with technological process, the consumption of most of period water is all lower than preset value, but soft starting device cannot to pump motor speed governing, and pump motor can keep top speed to run, and thus causes the waste of electric energy and the water yield.
Utility model content
[technical matters that will solve]
The purpose of this utility model is to provide a kind of high-efficiency energy-saving control for steel tube quench water system.
[technical scheme]
The utility model is achieved through the following technical solutions.
The utility model relates to a kind of high-efficiency energy-saving control for steel tube quench water system, comprise pump motor, detection module, variable frequency control module, PLC and industrial computer, described pump motor and variable frequency control model calling, described PLC respectively with detection module, variable frequency control module is connected with industrial computer, described industrial computer is provided with man-machine interface, described detection module is used for the position of examination steel tube in steel tube quench technological process, described variable frequency control module is for driving pump motor, described PLC starts or stops or electrical interlocks for controlling variable frequency control module, presetting frequency is exported according to the position analysis variable frequency control module of steel pipe in steel tube quench technological process that detection module detects, described industrial computer is used for being monitored by the running status of man-machine interface to the modules of described high-efficiency energy-saving control, setting starting mode of pump or stopping, setting variable frequency control module is at the output frequency of period and/or non-quenching period that quenches.
As one preferred embodiment, described variable frequency control module comprises the first contactor, frequency converter, the second contactor and the isolating switch that are connected in series, described first contactor is connected on the output terminal of frequency converter, and described second contactor and isolating switch are connected on the input end of frequency converter.
As another preferred embodiment, described variable frequency control module also comprises reactor and outlet reactor, and described reactor is connected on the input end of frequency converter, and described outlet reactor is connected on the output terminal of frequency converter.
As another preferred embodiment, also comprise soft-start module, described soft-start module is connected with PLC and pump motor respectively, described PLC also for: control the startup of soft-start module, stopping or electrical interlocks.
As another preferred embodiment, described soft-start module comprises the 3rd contactor, motor protecter, soft initiator, fuse and the mutual inductor that are connected in series.
As another preferred embodiment, described soft-start module also comprises the 4th contactor being connected in parallel on soft initiator two ends.
As another preferred embodiment, described detection module comprises hot metal detector and proximity switch, and described hot metal detector and proximity switch are arranged on each position in steel tube quench technological process.
As another preferred embodiment, also comprise power module, described power module is respectively pump motor, variable frequency control module, soft-start module and PLC and powers.
As another preferred embodiment, described power supply is three-phase alternating-current supply.
[beneficial effect]
The technical scheme that the utility model proposes has following beneficial effect:
The utility model controls pump motor by increasing variable frequency control module, solves original system Problems existing.Particularly:
(1) in the production run of reality, according to different cultivars, the steel tube quench time institute water requirement of specification requires different, by the man-machine interface setting quenching velocity of industrial computer, axial flow pump group is adjusted by the frequency of PLC adjustment frequency converter is given, the water pump quenching travelling speed of outer sprinkling pump group, corresponding adjustment water pump output power, accurately meet different cultivars, the steel tube quench institute water requirement of specification, pressure requirements, the output solving water system exceedes quenching technical and requires water yield problem, ensure product quality, decrease the water yield of quenching when the period, water supply flow requirement designed lower than maximum amount of water, electric resources is wasted, realize energy-saving and cost-reducing, improve productivity effect.Meanwhile, exit of pump valve is opened entirely, solves original system and adopts exit of pump valve adjustment water supply flow to increase the problem of pipeline loss.
(2) non-quenching velocity is set by the man-machine interface of industrial computer, according to the position signalling of steel pipe in steel tube quench technological process that detection module sends, automatically the given non-quenching travelling speed of water pump adjusting axial flow pump group, outer sprinkling pump group of frequency of frequency converter is adjusted by PLC, corresponding reduction water pump output power, decrease the water system non-quenching period do not need the water yield and original system still by the quenching period for water problem, decrease the non-quenching period water yield, electric resources waste, realize energy-saving and cost-reducing, improve productivity effect.
(3) according to the position signalling of steel pipe in steel tube quench technological process that detection module sends, the frequency automatically being adjusted frequency converter quenching period and non-quenching period by PLC is given, and adjustment adjustment pump motor rotating speed, achieves intellectuality automatically.
(4) the utility model maintains original soft initiator control module, using for subsequent use as variable frequency control module of original soft initiator control module, improves system operation reliability.
Accompanying drawing explanation
The structured flowchart of the high-efficiency energy-saving control for steel tube quench water system that Fig. 1 provides for the utility model embodiment one.
The structured flowchart of the high-efficiency energy-saving control for steel tube quench water system that Fig. 2 provides for the utility model embodiment two.
Variable frequency control module in the high-efficiency energy-saving control that Fig. 3 provides for embodiment two of the present utility model and soft-start module circuit theory diagrams.
Variable frequency control module in the high-efficiency energy-saving control that Fig. 4 provides for embodiment three of the present utility model and soft-start module circuit theory diagrams.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, clear, complete description is carried out to embodiment of the present utility model, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiment, neither to restriction of the present utility model.Based on embodiment of the present utility model, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
Embodiment one
Embodiment one provides a kind of high-efficiency energy-saving control for steel tube quench water system, and as shown in Figure 1, this control system comprises detection module, variable frequency control module 2, PLC and industrial computer, and industrial computer is provided with man-machine interface.PLC is connected with detection module, variable frequency control module 2, industrial computer respectively, and variable frequency control module 2 is connected with pump motor.Detection module is used for the position of examination steel tube in steel tube quench technological process and this positional information is sent to PLC, variable frequency control module is for driving pump motor, PLC is used for controlling variable frequency control module according to the output parameter information of industrial computer and starts or stops or electrical interlocks, presetting frequency is exported according to the position analysis variable frequency control module of steel pipe in steel tube quench technological process that detection module detects, industrial computer is used for being monitored by the running status of man-machine interface to the modules of high-efficiency energy-saving control, setting starting mode of pump or stopping, setting variable frequency control module is at the output frequency of period and non-quenching period that quenches, particularly, after user sets parameter by the man-machine interface of industrial computer, corresponding parameter can be sent to PLC by industrial computer.In addition, need to illustrate, detection module can adopt hot metal detector and proximity switch to realize, by the detection module of different station, detect, follow the tracks of the position of steel pipe in steel tube quench technological process, thus realize the high low speed conversion of steel tube quench period and non-quenching period.Detection module can also adopt infrared sensor to realize, and follows the tracks of the position of steel pipe in steel tube quench technological process by arranging infrared sensor at different stations.
Embodiment two
Embodiment two can be obtained based on embodiment one, embodiment two provides a kind of high-efficiency energy-saving control for steel tube quench water system, as shown in Figure 2, this control system comprises detection module, variable frequency control module 2, soft-start module 1, PLC and industrial computer, and industrial computer is provided with man-machine interface.PLC is connected with detection module, variable frequency control module 2, industrial computer, soft-start module 1 respectively, and variable frequency control module 2 is connected with pump motor.Detection module is used for the position of examination steel tube in steel tube quench technological process and this positional information is sent to PLC, variable frequency control module is for driving pump motor, PLC is used for controlling variable frequency control module according to the output parameter information of industrial computer and starts or stops or electrical interlocks, presetting frequency is exported according to the position analysis variable frequency control module of steel pipe in steel tube quench technological process that detection module detects, industrial computer is used for being monitored by the running status of man-machine interface to the modules of high-efficiency energy-saving control, setting starting mode of pump or stopping, setting variable frequency control module is at the output frequency of period and non-quenching period that quenches, particularly, after user sets parameter by the man-machine interface of industrial computer, corresponding parameter can be sent to PLC by industrial computer.In addition, need to illustrate, detection module can adopt hot metal detector and proximity switch to realize, by the detection module of different station, detect, follow the tracks of the position of steel pipe in steel tube quench technological process, thus realize the high low speed conversion of steel tube quench period and non-quenching period.Detection module can also adopt infrared sensor to realize, and follows the tracks of the position of steel pipe in steel tube quench technological process by arranging infrared sensor at different stations.
Fig. 3 for embodiment two provide for the variable frequency control module in the high-efficiency energy-saving control of steel tube quench water system and soft-start module circuit theory diagrams.As shown in Figure 3, power supply AC, soft-start module 1 and pump motor M1 connect mutually.The two ends of soft-start module 1 are parallel with variable frequency control module 2.Particularly, one end of power supply AC is connected with one end of circuit breaker Q L2, and the other end of circuit breaker Q L2 is connected with the input end of the input end of soft-start module 1, variable frequency control module 2.Need to illustrate, circuit breaker Q L2 is used for distribution line protection.
Soft-start module 1 comprises contactor KM3, contactor KM4, motor protecter YD1, soft initiator RQ1, fuse FU1 and mutual inductor LH2; contactor KM4, motor protecter YD1, soft initiator RQ1, fuse FU1 and mutual inductor LH2 are connected in series; contactor KM3 is connected in parallel on soft initiator two ends; particularly; one end of contactor KM4 connects the output terminal of soft-start module, and the other end of contactor KM4 is connected with pump motor M1.Need to illustrate, contactor KM4 is used for soft-start module 1 and the interlocking of variable frequency control module 2 output loop, and fuse FU1 is used for distribution line protection.
Variable frequency control module 2 comprises circuit breaker Q L1, contactor KM1, frequency converter UF, contactor KM2, reactor L1 and outlet reactor L2.Particularly, one end of circuit breaker Q L1 is as the input end of variable frequency control module 2, the other end of circuit breaker Q L1 is connected with one end of contactor KM1, the other end of contactor KM1 is connected with reactor L1, the other end of reactor L1 is connected with the input end of frequency converter UF, the output terminal of frequency converter UF is connected with one end of outlet reactor L2, and the other end of outlet reactor L2 is connected with one end of contactor KM2, and the other end of contactor KM2 is connected with pump motor M1.By the input end series connection reactor L1 at frequency converter UF, the mutual interference between frequency converter UF and power supply L1 can be reduced, by the output terminal series connection outlet reactor L2 at frequency converter UF, the noise of pump motor M1 can be reduced, reduce the interference of frequency converter UF to pump motor M1, the effective propagation path of prolongation frequency converter UF and pump motor M1.In the present embodiment, contactor KM1 is used for closing a point frequency converter loop incoming power, and contactor KM2 is used for soft-start module 1 and the interlocking of variable frequency control module 2 output loop.
In the present embodiment, power supply AC is three-phase alternating-current supply, and wherein the effective value of mains A.C. voltage is 380V, and frequency is 50Hz.
The following describes the principle of work of the present embodiment.
According to the water yield required by the steel tube quench technique of different cultivars, specification, variable frequency starting water pump number of units is selected by industrial computer man-machine interface, and in man-machine interface, set water pump quenching period institute's water requirement corresponding high speed setting value, the low speed setting value of non-quenching period, low speed setting value only need meet steel pipe and arrive the quench station front water pump that starts to quench and be raised to default quenching at a high speed from low speed, is generally set to about 50% of high speed setting value; During production, according to the position signalling of steel pipe in steel tube quench technological process that detection module sends, PLC controls quenching period high speed, the given frequency inverted of non-quenching period low speed of variable frequency control module automatically, thus realize steel tube quench period water pump high-speed cruising, non-quenching period slow running after having quenched, thus to solve when water pump adopts soft start to control water pump in the wasting of resources of non-quenching period also high-speed cruising.
Embodiment three
Can obtain embodiment three based on embodiment two, embodiment two drives a pump motor for adopting variable frequency control module 2, and embodiment three is drive two pump motors by the variable frequency control module 2 in embodiment two.Particularly, Fig. 4 for embodiment three provide for the variable frequency control module in the control system of steel tube quench and soft-start module circuit theory diagrams, as shown in Figure 4, this circuit contains the circuit of control system in embodiment 1, comprise soft-start module 3, contactor KM5, pump motor M2, circuit breaker Q L3 in addition, wherein soft-start module 3 is identical with the circuit of soft-start module 1.Particularly, one end of contactor KM5 is connected with the common port of contactor KM2 and outlet reactor L2, the other end of contactor KM5 is connected with the output terminal of soft-start module 3, the input end of soft-start module 3 is connected with one end of circuit breaker Q L3, the other end of circuit breaker Q L3 is connected with power supply AC, and the output terminal of soft-start module 3 is connected with one end of pump motor M2 simultaneously.One that variable frequency control module 2 can be adopted to drive in 2 pump motors by embodiment two.
As can be seen from the above embodiments, the utility model embodiment is by increasing variable frequency control module, with detection module, PLC and industrial computer forming control system, controlling pump motor, is a kind of high-efficiency energy-saving control of effective steel tube quench water system.Particularly, according to different cultivars, the water yield required by steel tube quench technique of specification, industrial computer picture is selected variable frequency starting water pump number of units, and on picture, set high speed setting value corresponding to water pump quenching period institute's water requirement, the low speed setting value of non-quenching period, according to the position signalling of steel pipe in steel tube quench technological process that detection module sends, PLC controls the quenching period of converter plant at a high speed automatically, the given frequency inverted of non-quenching period low speed, thus realize steel tube quench period water pump high-speed cruising, non-quenching period slow running after having quenched, thus solve the water yield that raw water pump adopts soft start control, power resource is wasted, realize water system according to technique water yield adjustment output, reach the object of water system saves energy and the water yield, ensure product quality.
In addition, maintain original soft initiator control module, using for subsequent use as variable frequency control module of original soft initiator control module, improve system operation reliability.
Claims (9)
1. the high-efficiency energy-saving control for steel tube quench water system, it is characterized in that comprising pump motor, detection module, variable frequency control module, PLC and industrial computer, described pump motor and variable frequency control model calling, described PLC respectively with detection module, variable frequency control module is connected with industrial computer, described industrial computer is provided with man-machine interface, described detection module is used for the position of examination steel tube in steel tube quench technological process, described variable frequency control module is for driving pump motor, described PLC starts or stops or electrical interlocks for controlling variable frequency control module, presetting frequency is exported according to the position analysis variable frequency control module of steel pipe in steel tube quench technological process that detection module detects, described industrial computer is used for being monitored by the running status of man-machine interface to the modules of described high-efficiency energy-saving control, setting starting mode of pump or stopping, setting variable frequency control module is at the output frequency of period and/or non-quenching period that quenches.
2. the high-efficiency energy-saving control for steel tube quench water system according to claim 1, it is characterized in that: described variable frequency control module comprises the first contactor, frequency converter, the second contactor and the isolating switch that are connected in series, described first contactor is connected on the output terminal of frequency converter, and described second contactor and isolating switch are connected on the input end of frequency converter.
3. the high-efficiency energy-saving control for steel tube quench water system according to claim 2, it is characterized in that described variable frequency control module also comprises reactor and outlet reactor, described reactor is connected on the input end of frequency converter, and described outlet reactor is connected on the output terminal of frequency converter.
4. the high-efficiency energy-saving control for steel tube quench water system according to claim 1, characterized by further comprising soft-start module, described soft-start module is connected with PLC and pump motor respectively, described PLC also for: control the startup of soft-start module, stopping or electrical interlocks.
5. the high-efficiency energy-saving control for steel tube quench water system according to claim 4, is characterized in that described soft-start module comprises the 3rd contactor, motor protecter, soft initiator, fuse and the mutual inductor be connected in series.
6. the high-efficiency energy-saving control for steel tube quench water system according to claim 5, is characterized in that described soft-start module also comprises the 4th contactor being connected in parallel on soft initiator two ends.
7. the high-efficiency energy-saving control for steel tube quench water system according to claim 1, it is characterized in that described detection module comprises hot metal detector and proximity switch, described hot metal detector and proximity switch are arranged on each position in steel tube quench technological process.
8. the high-efficiency energy-saving control for steel tube quench water system according to claim 1, characterized by further comprising power module, and described power module is respectively pump motor, variable frequency control module, soft-start module and PLC and powers.
9. the high-efficiency energy-saving control for steel tube quench water system according to claim 8, is characterized in that described power supply is three-phase alternating-current supply.
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| CN201520737506.0U CN204965127U (en) | 2015-09-22 | 2015-09-22 | A high -efficient energy -saving control system for steel pipe quenching water system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899910A (en) * | 2017-11-09 | 2018-04-13 | 中国科学院电工研究所无锡分所 | Steel pipe cool water shower is energy saving to use Fuzzy control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899910A (en) * | 2017-11-09 | 2018-04-13 | 中国科学院电工研究所无锡分所 | Steel pipe cool water shower is energy saving to use Fuzzy control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160812 Address after: 610000 Sichuan Chengdu bull market mouth Patentee after: Chengdu Panxi Steel Metallurgy Engineering Technology Co., Ltd. Address before: 610000 Qingbaijiang, Sichuan province unity South Road Patentee before: Pangang Group Chengdu Steel & Vanadium Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20180922 |
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| CF01 | Termination of patent right due to non-payment of annual fee |