CN109733891B - Energy-saving detection control instrument for storehouse pump and working method thereof - Google Patents

Abstract

The invention belongs to the technical field of industrial dedusting and environment-friendly application, and particularly discloses a bin pump energy-saving detection control instrument which comprises a control instrument host, an operation keyboard, a parameter display window, a sensor signal conversion and transmission module, a sensor lock catch, a sensor probe connecting plate and a monitoring assembly. The invention discloses a bin pump energy-saving detection control instrument and a working method thereof, and has the beneficial effects that: the problems of high temperature, temperature drift, friction, hanging material error report, suspended powder interference, rapid blanking, air pressure impact, ash powder static interference, coal product change and other interference factors of materials in the bin pump are solved, the actual ash level height can be automatically tracked and corrected according to the initial material parameter state of the materials during use, the actual ash level in the bin pump can be accurately measured, and an accurate signal is provided for the next step of opening and closing the ash discharge valve; the energy-saving air compressor can be improved in the aspects of air consumption, the service life of a valve, pipeline abrasion, the service life of an air compressor, circulating cooling water of the air compressor and the like in the aspects of energy conservation, service life and the like.

Description

Energy-saving detection control instrument for storehouse pump and working method thereof

Technical Field

The invention belongs to the technical field of industrial dedusting and environment-friendly application, and particularly relates to a bin pump energy-saving detection control instrument and a working method thereof, which are suitable for energy conservation and control of mine, electric power and metallurgical pneumatic ash conveying.

Background

The pneumatic conveying is a comprehensive technology, relates to the fields of hydrodynamics, material science, automation technology, manufacturing technology and the like, and belongs to a high and new technical project with high conveying efficiency, small occupied area, economy and no pollution. In recent years, pneumatic transmission technology has been rapidly developed and applied in various fields, and in particular, new devices with high dense phase (solid-gas mixing ratio), low energy consumption, large capacity and long distance have been continuously developed. The energy consumption of pneumatic transmission is close to that of a belt conveyor due to high-concentration phase and low-speed transmission. Due to the signal error of the traditional level meter, the problem that the gas consumption is seriously wasted, the valve switching frequency is too high, the lagging technologies such as dilute phase conveying friction and the like cannot meet the energy-saving requirement of the modern industry is still solved in the conventional conveying mode, and the theoretical research of the traditional level meter is greatly lagged behind the practical application. Therefore, the key for improving the energy conservation and emission reduction of each production enterprise is to solve the problems of accurate bin pump material level measurement and ash conveying time control.

The pneumatic ash removal system in the coal-fired unit and the metallurgical industry usually follows the design principle of level priority when in design and has the function of time protection. It is necessary to put the level data information at the top in design. The level indicator used in the existing common ash removal system comprises tuning forks, ultrasonic waves, radio frequency admittance, radar, capacitors and the like, and generally adopts an insertion type installation mode, and a probe of the level indicator needs to be in direct contact with coal ash. Because of the coal ash is the mixture of powdery material and solid material, cohesiveness is stronger, and mobility is relatively poor, so often can adhere to on the charge level indicator sensor, lead to the information wrong report. To solve this problem, many ash removal systems can only use a time-based charge to complete the removal of the ash or dust. In order to ensure that the bin pump is not blocked by dust, the charging time of the system is relatively conservative, the period of charging and conveying the ash is short, the ash conveying amount is low each time, the air consumption of the ash removal system is seriously increased, and the waste of resources is caused. In addition, frequent dust transport can cause severe wear to the valve piping, shorten the service life of the ash removal system, and increase the costs of system maintenance and repair.

In practical application, due to the principles of the material level meter, the bin pump environment, the meter structure and other factors, more than 98% of the bin pump material level meter generates false alarm and false rejection. The design of several related products provided in the current market is not perfect enough, and the standard automatic calibration cannot be completed. When the activity of the coal source of the coal power plant changes, workers must be sent to the site to manually correct the scale standard, even if the coal source is not changed, the devices can generate certain deviation after normally operating for a period of time, regular correction is needed, manpower and financial resources are greatly wasted, the design of the real-time property of the material level of the devices is not perfect enough, only alarm signals of empty and full conditions can be obtained through the devices, and the real-time monitoring of the material level cannot be realized. Although the material level conditions of all points can be obtained in the instrument, an effective method for realizing the fitting of the material level and a counting rate standard curve is not found, so that accurate measurement cannot be finished, when the material level meter is not on time, the bin pump material level control is out of action, the bin pump control system is automatically switched to time control, and the signals of the material level meter are not managed.

From the old-fashioned storehouse pump result of use of tradition, good many power plants, metallurgical industry storehouse pump are because the charge level indicator is not good to be used, and the time control is adopted mostly to the ash conveying system, because ash bucket unloading speed is unstable, from the safety perspective, the time all sets up to be more conservative, and the result just leads to the ash that the storehouse pump carried at every turn very little, but the compressed air who uses is very much. When the ash amount is large and the ash discharge is not in time, a large amount of ash is accumulated in the ash hopper. The other side effect increases the air consumption for conveying each ton of ash, increases the abrasion to an ash discharge pipeline and a valve, and causes a great amount of ash accumulation in an ash hopper and potential safety hazard because the ash discharge is not in time when the feeding time is too long.

Because the time is adopted to control the bin pump to work, the action frequency is very high during the bin pump work, the internal working environment is severe, and the level gauge is easy to damage, thereby causing false alarm and failure. So that the material level control is difficult to be really used in the operation, and the bin pump feeding control is basically carried out according to a time control mode. The feeding time of the bin pump is controlled in a very short time due to the consideration of the safety and the non-ash-blocking of the operation. The feeding amount of the bin pump mainly depends on the amount of ash in the ash bucket, the ash amount is large, the pump is full within 10 seconds, and when the ash bucket does not contain ash or the ash amount is small, the pump full time is long (half an hour can not reach one third of the pump). Therefore, in multiple cycles, the bin pump is in a very small amount of even empty pump ash conveying state, a large amount of compressed air is lost, and energy waste is serious. Meanwhile, because the time control interval is small, the ash conveying frequency of a bin pump with a small amount of coal ash or an empty pump accounts for more than 65% of the whole ash conveying frequency, the system action frequency is high, peripheral equipment such as a feed valve and the like are quickly abraded, when the ash amount is small, an ash conveying system is in a dilute-phase ash conveying state, an ash conveying pipeline is greatly abraded, and the pipeline is easily blocked.

The traditional ash conveying time control logic operation diagram is in the actual working condition of an electric dust removal and ash conveying system due to the instability of unit load operation and the difference of ash content of coal. The difference in the amount of ash falling in the ash hoppers is very large. According to the existing ash conveying control logic, when the ash amount is large, the system cannot react, when the ash amount is small, the system resource waste is serious, and through the analysis of the following data, the actual conditions of ash conveying of an ash hopper and a bin pump under the control logic mainly based on time control of the original ash conveying system and the actual conditions of starting an ash conveying program of the bin pump by using an ash energy-saving bin pump detection controller (as shown in fig. 4 and 5) can be seen. As can be seen from fig. 4 and 5, in the mode using "time control": the ash falling amount in each time in the bin pump is very different. From field observation and analysis, it is known that the amount of silo pump feed is largely dependent on the amount of dry ash in the upper hopper. When the ash in the ash bucket is more, the bin pump is basically full of the ash, and when the ash in the ash bucket is less, the bin pump is less in the feeding, even the bin pump runs in an empty state. According to the test condition on the same day, the bin pump is in the empty pump running state for more than half of the time within 24 hours. According to field historical experience and condition statistics, the bin pump is operated in an energy consumption and low efficiency state for more than 60% of the time in the current time control mode. A large amount of compressed air and energy are wasted, meanwhile, the feeding and discharging valves also frequently act in an ashless state, the compressed air consumption is high, the mechanical abrasion of equipment is large, the service life is shortened, and the maintenance amount of the equipment is increased.

In terms of contact type material level meters and passive nuclear material level meters produced at home and abroad at present, two main problems are puzzled: 1. the coal ash source of the thermal power plant is changed frequently, even the radioactivity of some coal sources is greatly different (more than 100 times at most), and the measurement of the material level is calibrated based on the radioactivity of the coal sources, so the product can normally work only by calibrating again when the coal sources are changed, the use convenience is poor, and the practicability is not ideal enough; 2. the system has no real-time measurement and control function of the material level, is similar to a switch, only identifies the material full and empty, has poor accuracy, and cannot be applied to a system with more accurate material level requirement.

Based on the current application situation of the material level meter of the thermal power plant, the defects of the conventional material level meter and the passive nuclear material level meter are compared, the development of the conventional nuclear technology is based, the defect of detection of the conventional material level meter can be overcome, the height of the ash level in a bin pump can be accurately measured, the ash level signal is used as a main control ash discharge valve ash discharge frequency signal from a control program, and the problem that the ash conveying system is energy-saving, the service life of a valve and the abrasion (dilute phase conveying) of a pipeline can be greatly solved by using the ash level signal as an auxiliary signal (a time control ash discharge valve) is solved.

Therefore, based on the above problems, the present invention provides a bin pump energy saving detection control instrument and a working method thereof.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a bin pump energy-saving detection control instrument and a working method thereof, the overall structural design is reasonable, the problems of the existing contact type material level instrument or the passive nuclear material level meter are solved, the analog quantity display of the material level in a bin pump is realized, the material level expert world control mode of the bin pump is carried out, the ash conveying efficiency is improved, the waste of compressed air of an ash conveying system is avoided, an operator can change the operation mode in time according to the actual operation capacity and the material level condition in the bin pump, the dust removal efficiency is prevented from being influenced, and the emission reduction effect is further achieved.

The technical scheme is as follows: the invention provides an energy-saving detection control instrument for a bin pump, which consists of a control instrument host, an operation keyboard, a parameter display window, a sensor signal conversion and transmission module, a sensor lock catch, a sensor probe connecting plate and a monitoring assembly, wherein the operation keyboard and the parameter display window are arranged on the control instrument host; the monitoring assembly comprises a probe rod, an insulating layer arranged on the outer layer of the probe rod, a plurality of sensor probes arranged on the insulating layer, a protective layer arranged on the insulating layer and wrapping the plurality of sensor probes, and a sensor heavy hammer arranged at one end of the probe rod.

According to the technical scheme, the probe rod and the insulating layer are located in the sensor heavy hammer.

According to the technical scheme, the controller host is used for providing power for the sensor signal conversion transmission module and calculating signals collected by the sensor signal conversion transmission module, and setting, control, signal conversion, error correction and temperature compensation signals of the whole device are completed accordingly.

According to the technical scheme, the parameter display window is used for displaying the running state of equipment, correcting parameters, giving an alarm to the equipment and the ash height of the bin pump, and the operation keyboard is used for inputting and correcting numerical parameters.

According to the technical scheme, the sensor signal conversion and transmission module is used for converting the ash powder height physical signals into electric signals to be transmitted to the controller host.

According to the technical scheme, the probe rod is made of 316L stainless steel; the insulating layer is made of polytetrafluoroethylene; the protective layer is made of polyurethane.

The invention provides a working method of a bin pump energy-saving detection control instrument, which comprises the following steps of 1, accurately measuring the actual height of the ash level in the bin pump by a plurality of sensor probes by using a field effect working principle. And 2, receiving the actual ash level height parameters in the delivery pump fed back by the sensor probes by the sensor signal conversion and transmission module, correcting, compensating, eliminating static electricity, amplifying and transmitting 4-20mA of data uploaded by the sensor probes by using powerful computer functions, and then entering a host of the controller. And 3, displaying the parameters after the host computer of the control instrument receives the parameters, and early warning when the parameters do not accord with the preset parameters.

In the technical scheme, the control instrument host is set in the step 3 through an operation keyboard, the original time priority control logic 100S is changed into an ash conveying logic mode with an ash level priority, the ash level height is set to 6000mm in a first electric field setting height, 5000mm in a second electric field and 4000mm in a third electric field setting height, wherein the ash level height can be set randomly on the system according to the load size and the coal condition, the time is used as a bottom-protecting control number, the first electric field time is set to 4000S, the second electric field time is set to 5000S, the third electric field time is set to 6000S, the time setting can be set randomly on the system according to the load size and the coal condition and needs to be synchronous with the ash unloading speed, a parameter display window is used for making an ash level change curve and displaying and recording according to the change of the ash level signal of the bin pump, so that an operator can master the ash level change process of each bin pump at any time and judge, and the running conditions of abrasion and air leakage of a dome valve, abrasion of an ash conveying valve, a balance valve, an ash bucket suspension material, an ash conveying pipeline and the like in the system.

Compared with the prior art, the energy-saving detection control instrument for the bin pump and the working method thereof have the beneficial effects that: 1. the problems of high temperature, temperature drift, friction, hanging material error report, suspended powder interference, rapid blanking, air pressure impact, ash powder static interference, coal product change and other interference factors of materials in the bin pump are solved, the actual ash level height can be automatically tracked and corrected according to the initial material parameter state of the materials during use, the actual ash level in the bin pump can be accurately measured, and an accurate signal is provided for the next step of opening and closing the ash discharge valve; 2. the analog quantity display of the material level in the bin pump is realized, the material level expert world control mode of the bin pump is realized, the ash conveying efficiency is improved, the waste of compressed air of an ash conveying system is avoided, an operator can change the operation mode in time according to the actual operation capacity and the material level condition in the bin pump, the dust removal efficiency is prevented from being influenced, and the emission reduction effect is further achieved; 3. the energy-saving air compressor can be improved in the aspects of air consumption, the service life of a valve, pipeline abrasion, the service life of an air compressor, circulating cooling water of the air compressor and the like in the aspects of energy conservation, service life and the like.

Drawings

FIG. 1 is a schematic structural diagram of an energy-saving detection control instrument of a bin pump according to the present invention;

FIG. 2 is a schematic diagram of a partially enlarged structure of a probe rod, an insulating layer and a protective layer of the energy-saving testing and controlling instrument for a cabin pump according to the present invention;

FIG. 3 is a diagram illustrating the trend of the bin pump level under the level control logic of the energy-saving inspection control instrument of the bin pump according to the present invention;

FIG. 4 is a graph of ash hopper level trend under time logic control of a prior art apparatus;

FIG. 5 is a graph of bin pump level trend under time logic control of a prior art instrument;

wherein, the numbers in the figure are marked as follows: 1-a controller host, 2-an operation keyboard, 3-a parameter display window, 4-a sensor signal conversion transmission module, 5-a sensor lock catch, 6-a sensor probe connecting plate, 7-a sensor probe, 8-a sensor heavy hammer, 9-a probe rod, 10-an insulating layer and 11-a protective layer.

Detailed Description

The invention is further elucidated with reference to the drawings and the embodiments.

The energy-saving detection control instrument for the storehouse pump as shown in fig. 1 and fig. 2 is composed of a controller host 1, an operation keyboard 2, a parameter display window 3, a sensor signal conversion transmission module 4, a sensor lock catch 5 (capable of withstanding the impact within five tons without falling off) and arranged below the sensor signal conversion transmission module 4, a sensor probe connecting plate 6 and a monitoring component, wherein the operation keyboard 2 and the parameter display window 3 are arranged on the controller host 1; the monitoring assembly comprises a probe rod 9, an insulating layer 10 arranged on the outer layer of the probe rod 9, a plurality of sensor probes 7 arranged on the insulating layer 10, a protective layer 11 arranged on the insulating layer 10 and wrapping the plurality of sensor probes 7, and a sensor heavy hammer 8 arranged at one end of the probe rod 9 (the sensor heavy hammer and the sensor lock catch adopt a reverse pushing method, and the steel wire lock catch is arranged in a way of resisting the steel wire lock catch, so that the steel wire rope can only be stressed along with the larger lock catch, the firmer the steel wire rope is, and the lock catch cannot fall off until the steel wire rope is broken).

Further preferably, the probe 9 and the insulating layer 10 are located in the sensor weight 8; the controller host 1 is used for providing power for the sensor signal conversion transmission module 4, calculating signals acquired by the sensor signal conversion transmission module 4, and completing setting, control, signal conversion, error correction and temperature compensation signals of the whole device; the parameter display window 3 is used for displaying the running state of equipment, correcting parameters, alarming the equipment and the height of ash powder of the bin pump, and the operation keyboard 2 is used for inputting and correcting numerical parameters; the sensor signal conversion and transmission module 4 is used for converting the ash powder height physical signal into an electric signal and transmitting the electric signal to the control instrument host 1; the probe rod 9 is made of 316L stainless steel; the insulating layer 10 is made of polytetrafluoroethylene; the protective layer 11 is made of polyurethane.

The invention relates to a working method of a bin pump energy-saving detection control instrument, which comprises the following steps of 1, accurately measuring the actual height of a ash level in a bin pump by a plurality of sensor probes 7 by utilizing a field effect working principle. And 2, receiving the actual ash level height parameters in the delivery pump fed back by the sensor probes 7 by the sensor signal conversion and transmission module 4, correcting, compensating, eliminating static electricity and amplifying and transmitting 4-20mA of data uploaded by the sensor probes 7 by using powerful computer functions, and then, entering the controller host 1. And 3, displaying the parameters after the control instrument host 1 receives the parameters, and early warning when the parameters do not accord with preset parameters.

Wherein, the control instrument host 1 is set by the operation keyboard 2 in the step 3, the original time priority control logic 100S is changed into the ash conveying logic mode with ash level priority, the ash level height is 6000mm, the two electric fields are 5000mm, the three electric fields are 4000mm, wherein, the ash level height can be set randomly on the system according to the load size and the coal condition, the time is used as the bottom-keeping control number, the one electric field time is 4000S, the two electric field time is 5000S, the three electric field time is 6000S, the time setting can be set randomly on the system according to the load size and the coal condition, and needs to be synchronous with the ash discharging speed, the parameter display window 3 makes an ash level change curve and displays and records according to the change of the ash level signal of the bin pump, so that the operator can master the ash level change process of each bin pump at any time and judge the operation state of the bin pump from the curve, and the running conditions of abrasion and air leakage of a dome valve, abrasion of an ash conveying valve, a balance valve, an ash bucket suspension material, an ash conveying pipeline and the like in the system.

The bin pump energy-saving detection control instrument of the invention, on one hand, measures the ash level of the ash conveying bin pump by adopting a contact type measuring mode, mainly comprises a probe part and a host part, and simultaneously considers a plurality of interference factors such as high temperature, temperature drift, friction, hanging material error reporting, suspended powder interference, rapid blanking and air pressure impact, ash static interference, coal product change and the like of ash powder in the bin pump, wherein the probe part mainly comprises a corrosion-resistant 316L stainless steel material, a high-temperature corrosion-resistant polytetrafluoroethylene insulating material and a wear-resistant impact-resistant polyurethane flexible material (solving the problem of false alarm and false rejection caused by the traditional interference of severe environments such as high dust, high static, high temperature, rapid impact, friction, corrosion and the like in the bin pump), and the host adopts a microelectronic computing technology to compensate various parameters of a probe acquisition signal; on the other hand, the software program is set, the traditional control program which takes time as the main control and gray level as the auxiliary control is changed into the control program which takes the gray level as the main control and the time as the auxiliary control, the auxiliary control time is prolonged by about two/three times compared with the original time, a large amount of energy can be saved, and the service life of equipment is prolonged. Taking a 660MW generator set as an example, the time setting is as follows: the time control of eight storehouse pumps of a electric field is set up to 4000 seconds by original 1000, and the time control of eight storehouse pumps of two electric fields is set up to 5000 seconds by original 3000, and the time control of eight storehouse pumps of three electric fields is set up to 6000 seconds by original: 20000 seconds, the time control of the eight pumps in the four electric fields is set as follows by 20000 seconds: 50000 seconds, the time control of eight pumps of five electric fields is set as follows from 40000 seconds: 80000 seconds.

Examples

The trend chart shown in fig. 3 can be combined with an auxiliary time curve chart to judge the ash hopper hanging and valve damage, and the operation mode after the main modification is the material level signal control:

(1) under normal conditions, each conveying unit automatically operates in a program control mode according to set parameters, and the process comprises the steps of starting to operate a feeding valve to be opened (the conveying tank starts to load ash), starting to operate the conveying tank to reach a set value or reaching set ash loading time, starting to operate the feeding valve to be closed, starting to operate a discharging valve to be opened, starting to operate an air inlet valve to be opened (conveying is started), reducing the pressure of a conveying pipeline to a set value, starting to operate the air inlet valve to be closed (one conveying cycle is finished), and entering the next cycle.

(2) This procedure sets up two gen-seng and sets up the window, is feeding ash level height setting and air intake pressure setting respectively: the feeding ash level height and the feeding height are set, and the ash level higher position is set as far as possible under the condition that an ash bucket of the electric dust collector is not full of ash, and accounts for about 60% of the whole range; the ash inlet time is set, in order to ensure the safe operation of the bin pump, a time guarantee signal is set before the ash level height is taken as a reference signal, and the ash hopper can be ensured to be not full of ash by setting time to the maximum extent under the condition that the supplement level indicator is abnormal, so that the aims of safety and energy conservation are fulfilled.

After a certain enterprise of national power supply, which is 09 months and is installed in 2017 and 2018, installs the energy-saving detection control instrument for the bin pump, the fault of the level indicator is reduced to 0 time from the original 137 times/year, the operation of the level indicator is reliable, the effect of improving the stability of the operating condition of the bin pump is obvious, the automatic input rate is increased, the occurrence of dilute-phase ash conveying condition is reduced, the action times of a valve are reduced, the use amount of ash conveying compressed air is greatly saved, a large amount of maintenance time and maintenance cost for replacing the level indicator are saved, the maintenance cost of the maintenance workload of the bin pump valve and the ash conveying system pipeline is greatly reduced, and the operation reliability of the ash conveying system is effectively improved.

And (3) economic benefit analysis:

take eight energy-conserving storehouse pump detection control appearance of eight ash conveying storehouse pumps of a certain 660MW unit electric field of state electricity as an example:

before the bin pump is not provided with a level gauge, a high-level switch position and a low-level switch position are installed for monitoring, the ash discharge time (artificial adjustment) triggers automatic ash conveying, and the ash discharge time is adjusted on the basis of ensuring that the ash conveying is finished within 8-12 minutes. After the level indicator is installed, electric fields A1, B1 and D1 cannot be put into operation and are not tried all the time, ash conveying of a furnace #2 from 3 months to 15 days is changed from ash discharging time triggering to double triggering control of level and ash discharging time, ash discharging time is changed from 1000 seconds to 4000 seconds, the level is adjusted from 0.4 meter to 0.6 meter (zero position 1 meter), and then due to incomplete logic of a DCS system, part of ash pipes continuously convey ash, the level is quitted from triggering, and the level indicator is basically normal after being adjusted for about 20 days. The following is the ash transport electricity consumption table for 3 months:

as can be seen from the table above, 1, single day: 8 days and 21 days, ash contents 24.53 and 24.49, loads (ten thousand KWH)903.84 and 890.40, ash conveying power consumption is reduced by 13389, 10761 and 2628KWH, and power saving percentage is 2628/13389 and 19.6 percent.

2. Average value: because the ash content after modification is always low, the average value before modification is compared with 29 days: before modification and 29 days, ash content is 25.02 and 26.45, load (ten thousand KWH)1076.6 and 1522.08 ash conveying power consumption are reduced by 14061-10920-3141 KWH.

The power saving percentage is 3141/14061-22.3%, the total power consumption rate is reduced: 0.13% -0.09% ═ 0.02%.

According to the statistical data, each electric field can save electricity after being transformed: the time control of eight pumps of an electric field is set to 4000 seconds from the original 1000, and the electricity charge is saved by about 3141KWH every day; the time control of eight two-electric-field bin pumps is set to 5000 seconds from 3000 originally, and electricity charge is saved by about 4000KWH each day; the time control of the eight three-electric-field bin pumps is set from 6000 seconds to be as follows: 20000 seconds; the time control of eight bin pumps of four electric fields is set as follows by 20000 seconds: 50000 seconds; the time control of the five electric fields and the eight bin pumps is set from 40000 seconds to be as follows: 80000 seconds.

The energy-saving detection control instrument for the bin pump changes a pneumatic ash conveying system into a pneumatic ash conveying system by taking time ash conveying as a main signal and time as an auxiliary signal, wherein the time is an ash level signal (a great deal of analysis is already carried out on the pneumatic ash conveying system, and the ash level signal of the modern industrial bin pump is difficult to detect and only time ash discharge can be adopted); the bin pump energy-saving detection control instrument can save a large amount of energy by conveying ash (the highest generator set can save 7000 WH/day electricity in one day); the bin pump energy-saving detection control instrument can directly judge the ash discharge running state of the bin pump and prevent major accidents of collapse of the dust removal hopper; the service life of the valve can be prolonged by more than one time, the service life of the ash conveying pipeline can be prolonged by more than one time, the service life of the compressor can be prolonged by more than one time, a large amount of manpower maintenance cost is saved, and the operation efficiency of the equipment is improved.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.

Claims (6)

1. The utility model provides a storehouse pump energy-saving detection control instrument which characterized in that: the device is composed of a controller host (1), an operation keyboard (2) and a parameter display window (3) which are arranged on the controller host (1), a sensor signal conversion transmission module (4) which is matched with the controller host (1) for use, a sensor lock catch (5) which is arranged below the sensor signal conversion transmission module (4), a sensor probe connecting plate (6) which is arranged at one end of the sensor lock catch (5), and a monitoring component which is connected with one end of the sensor probe connecting plate (6); the monitoring assembly comprises a probe rod (9), an insulating layer (10) arranged on the outer layer of the probe rod (9), a plurality of sensor probes (7) arranged on the insulating layer (10), a protective layer (11) arranged on the insulating layer (10) and wrapping the plurality of sensor probes (7), and a sensor heavy hammer (8) arranged at one end of the probe rod (9); the working method of the bin pump energy-saving detection control instrument comprises the following steps that 1, a plurality of sensor probes (7) accurately measure the actual height of a ash level in a bin pump by using a field effect working principle; step 2, a sensor signal conversion and transmission module (4) receives actual ash level height parameters in the delivery pump fed back by a plurality of sensor probes (7), and data uploaded by the plurality of sensor probes (7) are corrected, compensated, subjected to static elimination and amplified and transmitted by 4-20mA by using powerful computer functions and then enter a controller host (1); step 3, the control instrument host (1) receives the parameters and displays the parameters, and carries out early warning when the parameters do not accord with preset parameters, wherein, the control instrument host (1) is set through the operation keyboard (2), the original time priority control logic 100S is changed into an ash conveying logic mode with ash level priority, the ash level height is 6000mm in a first electric field setting height, 5000mm in a second electric field and 4000mm in a third electric field height, wherein, the ash level height can be randomly set on the system according to the load size and the coal condition, the time is used as a bottom-preserving control number, the time of the first electric field is 4000S, the time of the second electric field is 5000S, the time of the third electric field is 6000S, the time setting can be randomly set on the system according to the load size and the coal condition and needs to be synchronous with the ash unloading speed, the parameter display window (3) makes an ash level change curve and displays records according to the change of the ash level signals of, the change process of the ash level of each bin pump can be mastered by an operator at any time, and the operation state of the bin pump, the abrasion of a dome valve, air leakage, an ash conveying valve, a balance valve, an ash bucket suspension and the abrasion operation condition of an ash conveying pipeline in the system are judged from the curve graph.

2. The energy-saving detection and control instrument for the storehouse pump according to claim 1, wherein: the probe rod (9) and the insulating layer (10) are positioned in the sensor heavy hammer (8).

3. The energy-saving detection and control instrument for the storehouse pump according to claim 1, wherein: the controller host (1) is used for providing power for the sensor signal conversion transmission module (4) and calculating signals acquired by the sensor signal conversion transmission module (4), and the setting, control, signal conversion, error correction and temperature compensation signals of the whole device are completed accordingly.

4. The energy-saving detection and control instrument for the storehouse pump according to claim 1, wherein: the parameter display window (3) is used for displaying the running state of equipment, correcting parameters, alarming the equipment and the height of ash powder of the bin pump, and the operation keyboard (2) is used for inputting and correcting numerical parameters.

5. The energy-saving detection and control instrument for the bin pump according to claim 3, characterized in that: the sensor signal conversion and transmission module (4) is used for converting the ash powder height physical signal into an electric signal and transmitting the electric signal to the controller host (1).

6. The energy-saving detection and control instrument for the storehouse pump according to claim 1, wherein: the probe rod (9) is made of 316L stainless steel; the insulating layer (10) is made of polytetrafluoroethylene; the protective layer (11) is made of polyurethane.

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