CN201974321U - Full-automatic pulverized coal sampling system - Google Patents
Full-automatic pulverized coal sampling system Download PDFInfo
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- CN201974321U CN201974321U CN2011200210105U CN201120021010U CN201974321U CN 201974321 U CN201974321 U CN 201974321U CN 2011200210105 U CN2011200210105 U CN 2011200210105U CN 201120021010 U CN201120021010 U CN 201120021010U CN 201974321 U CN201974321 U CN 201974321U
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- pulverized coal
- sampling
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Abstract
The utility model discloses a full-automatic pulverized coal sampling system, which comprises a compound single-pipe sampler and also comprises an electric actuator, a main controller, a purging electromagnetic valve as well as a three-way joint and a sampling electromagnetic valve, a pressure regulating valve as well as a negative pressure generator, wherein the end of the compound single-pipe sampler is provided with a sampling hole; the electric actuator is used for driving the compound single-pipe sampler to advance and retreat in a pulverized coal pipeline; the main controller is used for controlling the actuation of the electric actuator; the purging electromagnetic valve and the three-way joint are connected through a pressure pipeline (I); the sampling electromagnetic valve, the pressure regulating valve and the negative pressure generator are connected with each other in sequence through a pressure pipeline (II); the three-way joint and the negative pressure generator are connected through a pressure pipeline (III); the pressure pipeline (III) is provided with a pulverized coal cyclone separator; the lower end of the pulverized coal cyclone separator is provided with a sample reserving bottle; the electric actuator is connected with the main controller; and the main controller is also connected with a human-computer interface of an upper computer. The full-automatic pulverized coal sampling system not only is capable of effectively avoiding the influence of personal factors on sampling results but also is capable of advancing according to an equal-circular ring curve at a variable speed to realize constant-speed continuous sampling, and further, the sampling accuracy is ensured.
Description
Technical field
The utility model relates to a kind of coal dust sampling system, especially relates to a kind of full automatic pulverized coal sampling system.
Background technology
Fineness of pulverized coal is a power plant boiler index that needs strict control in service, also is optimized combustion, the important parameter that improves the boiler operatiopn economic performance.For making station boiler use qualified coal dust, obtain higher burning efficiency, and boiler is moved under the state of safety, economy, must carry out periodic monitoring to fineness of pulverized coal.
In the prior art, bunker formula pulverized coal preparation system and unit pulverized-coal system in the middle of the pulverized coal preparation system that power plant uses can be divided into.Middle bunker formula pulverized coal preparation system, the coal dust sampling ratio is more convenient, can carry out periodic monitoring to coal dust, and unit pulverized-coal system is in barotropic state owing to system, the coal dust sampling ratio is difficulty, generally is difficult to accomplish regular sampling.
At present, domestic main force fired power generating unit and newly-built fired power generating unit all adopt unit pulverized-coal system basically, and coal dust sampling mainly is by dual mode, are done experiment by special measuring unit for first kind, and second kind is to adopt manual coal dust sampler.Use through reality, adopt this dual mode sampling to have following shortcoming respectively: first kind of mode spends the cost height and can not check at any time that the second way needs manually-operated to advance sampling gun, can't guarantee that therefore sampling gun is by waiting annulus curve speed change to advance; And sampling process can not be adjusted sampling pressure at any time according to the variation of pressure in the airduct, can't realize the isokinetic sampling of real meaning; Operation exists artificial random, and human factor is bigger to the normal operation influence of sampling result, equipment; The operation relative complex is difficult to accomplish regularly or sampling at any time; Simultaneously the working specification complexity causes some operations necessary to be omitted, as pressure regulation, purge and move back rifle etc.In sum, the greatest problem that the second way exists is that sampling result is lack of consistency and representativeness, makes equipment lose the meaning of installation.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, a kind of full automatic pulverized coal sampling system is provided, it is simple in structure, reasonable in design and use easy to operate, can effectively solve and exist sampling to be lack of consistency and representational problem in the prior art, avoid the influence of human factor to sampling result, this system can be advanced according to speed change such as curve such as annulus such as grade, realize constant speed serial sampling, and then guarantee the sampling accuracy, have simultaneously cost low, can adjust sampling pressure and the high characteristics of automaticity at any time.
For achieving the above object, the technical solution adopted in the utility model is: a kind of full automatic pulverized coal sampling system, comprise combined type single tube sampler, described combined type single tube sampler end is provided with sample tap, it is characterized in that: also comprise being used for driving the electric operator that combined type single tube sampler is advanced and withdrawed from pulverized coal channel, be used to control the master controller of electric operator action, the purge solenoid valve that is connected by pressure piping one and three-way connection and the sampling solenoid valve that is connected successively by pressure piping two, pressure-regulating valve and negative pressure generator, described pressure piping two is a malleation air intake opening end near an end of sampling solenoid valve, described pressure piping two other ends and combined type single tube sampler are joined, described pressure piping one joins near an end of purge solenoid valve and the malleation air intake opening place of pressure piping two, and described pressure piping one other end and combined type single tube sampler are joined; Be connected by pressure piping three between described three-way connection and the negative pressure generator, described pressure piping three is provided with the coal dust cyclone separator, and described coal dust cyclone separator lower end is provided with the bottle that keeps sample; Described electric operator and master controller join, and described master controller also connects the host computer man-machine interface.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: also comprise the position detection unit that the stroke and the position of combined type single tube sampler are detected in real time, described position detection unit and master controller join.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: described position detection unit is electric limit switch.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: also comprise and join with master controller and be used for the acousto-optic warning unit that to pressurized air under-voltage and each power unit overcurrent of system carries out Realtime Alerts.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: described master controller is the PLC industrial control unit (ICU).
Above-mentioned full automatic pulverized coal sampling system is characterized in that: described host computer man-machine interface is complete Chinese LCD touch screen operation interface.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: described negative pressure generator is provided with tensimeter.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: all be connected by umbilical cable between described electric operator and the master controller and between master controller and the host computer man-machine interface.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: described combined type single tube sampler is the tack sampling gun.
Above-mentioned full automatic pulverized coal sampling system is characterized in that: described electric operator is the small-sized electric line handspike.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design, this coal dust sampling system has realized Automatic Control serial sampling, and manually operation of random operation or timing automatic and operated from a distance are used easy to operate.
2, easy to install, this coal dust sampling system is fixed on the vertical section of an airduct of coal pulverizer by mounting bracket, opens a mounting hole again on an airduct, and other joins two auxiliary points and gets final product with adjustment.
3, can effectively solve in the prior art and to exist sampling to be lack of consistency and representational problem, avoid the influence of human factor, make this system realize constant speed serial sampling, and then guarantee the sampling accuracy according to waiting annulus curve speed change to advance to sampling result.
4, have cost low, can adjust sampling pressure and the high characteristics of automaticity at any time, and can effectively be used in the coal dust sampling process of pressurized direct pulverizing coal system.
5, the sampling because the utility model employing pressurized air is bled, therefore automatic purging system pipeline before and after the sampling has avoided the latch up phenomenon of sampler in the prior art.
6, because the utility model adopts electric operator to drive the sampling of combined type single tube sampler, make easy to operately, be convenient to control.
7, because the utility model adopts complete Chinese LCD touch screen operation interface, the operation intuitive and convenient cooperates acousto-optic warning unit simultaneously, has improved the intelligent degree of this coal dust sampling system.
Below by drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Description of reference numerals:
1-host computer man-machine interface; The 2-master controller; The 3-solenoid valve of taking a sample;
The 4-purge solenoid valve; 5-coal dust cyclone separator; The 6-three-way connection;
The 7-pressure-regulating valve; The 8-negative pressure generator; 9-combined type single tube sampler;
The 10-electric operator; The 11-bottle that keeps sample; The 12-sample tap;
13-malleation air intake opening; The 14-position detection unit; 15-1-pressure piping one;
15-2-pressure piping two; 15-3-pressure piping three; The 16-umbilical cable;
The 17-acousto-optic warning unit.
Embodiment
A kind of full automatic pulverized coal sampling system as shown in Figure 1, comprise combined type single tube sampler 9, described combined type single tube sampler 9 ends are provided with sample tap 12, also comprise and be used for driving the electric operator 10 that combined type single tube sampler 9 is advanced and withdrawed from pulverized coal channel, be used to control the master controller 2 of electric operator 10 actions, the purge solenoid valve 4 that is connected by pressure piping one 15-1 and three-way connection 6 and the sampling solenoid valve 3 that is connected successively by pressure piping two 15-2, pressure-regulating valve 7 and negative pressure generator 8, described pressure piping two 15-2 are malleation air intake opening end 13 near an end of sampling solenoid valve 3, the described pressure piping two 15-2 other ends and combined type single tube sampler 9 are joined, described pressure piping one 15-1 joins near an end of purge solenoid valve 4 and malleation air intake opening 13 places of pressure piping two 15-2, and the described pressure piping one 15-1 other end and combined type single tube sampler 9 are joined; Be connected by pressure piping three 15-3 between described three-way connection 6 and the negative pressure generator 8, described pressure piping three 15-3 are provided with coal dust cyclone separator 5, and described coal dust cyclone separator 5 lower ends are provided with the bottle 11 that keeps sample; Described electric operator 10 joins with master controller 2, and described master controller 2 also connects host computer man-machine interface 1.
The utility model also comprises the position detection unit 14 that the stroke of combined type single tube sampler 9 and position are detected in real time, and described position detection unit 14 is joined with master controller 2.
Described position detection unit 14 is electric limit switch.
The utility model also comprises and joins with master controller 2 and be used for the acousto-optic warning unit 17 that to pressurized air under-voltage and each power unit overcurrent of system carries out Realtime Alerts.When surpassing rated current with electrical component in the system, promptly reporting to the police, simultaneity factor shuts down in order to avoid damage equipment.
In the utility model, described master controller 2 is the PLC industrial control unit (ICU).
Described host computer man-machine interface 1 is complete Chinese LCD touch screen operation interface.Adopt not only easy operating of complete Chinese LCD touch screen operation interface, and visual and understandable.
Described negative pressure generator 8 is provided with tensimeter 15.Be convenient in time know pressure piping pressure inside size.
All be connected between described electric operator 10 and the master controller 2 and between master controller 2 and the host computer man-machine interface 1 by umbilical cable 16.
Described combined type single tube sampler 9 is the tack sampling gun.
Described electric operator 10 is the small-sized electric line handspike.
In the utility model, pressure-regulating valve 7 is the Manual pressure variable valve, and pressure-regulating valve 7 is used for realizing the constant speed adjusting of sampling process, assurance sampling quality; Host computer man-machine interface 1 is used for the setting at any time to sampling, purging, timing sampling and other action.
The course of work of the present utility model is: at first insert pressurized air on malleation air intake opening 13, energising start then, on host computer man-machine interface 1, choose automatic sampling (to be sampled as example explanation automatically), at this moment master controller 2 sends instruction, electric operator 10 entrys into service promote combined type single tube sampler 9 and enter in power plant's power transportation pipe to set depth and begin sampling (sampling time can be set according to sampling quantity); Meanwhile, purge solenoid valve 4 and sampling solenoid valve 3 are all opened, then pressurized air divides two-way to enter system, the three-way connection 6 back cleanings of wherein leading up to purge the pipeline of combined type single tube sampler 9 and coal dust cyclone separator 5, cleaning purges certain hour (the cleaning purge time can be set) back shut-down purge solenoid valve 4, another road by pressure-regulating valve 7 (use first according to actual conditions set) under the effect of negative pressure generator 8, malleation is discharged from outer tube (being positive pressure passageway), inner sleeve air pressure reduces and forms negative pressure, then enter in the combined type single tube sampler 9 by coal dust cyclone separator 5 and take a sample from the negative pressure of negative pressure generator 8, coal dust is promptly drawn to coal dust cyclone separator 5, enters the bottle 11 that keeps sample then; Combined type single tube sampler 9 begins to return whole sampling end-of-job under the driving of electric operator 10 after the sampling time-delay arrives setting-up time.
In above-mentioned sampling process, combined type single tube sampler 9 runs through the whole diameter at power transportation pipe sampling interface under the drive of electric operator 10, by the control of master controller 2, can make combined type single tube sampler 9 according to waiting sampling of annulus area-method.Because just big more from the near more coal dust throughput of tube wall, the time of stop is just long more, and more little from the near more coal dust throughput of tube hub, the residence time is short more, and tube hub coal dust throughput can be considered 0, and through facts have proved, the coal dust sampling is according to waiting obtained sample of annulus area-method the most representative.In addition, can be by adjusting the pressure of negative pressure generator 8, make in the pulverized coal channel when flow velocity V1 of coal dust equals in the combined type single tube sampler 9 coal dust flow velocity V2, carry out the coal dust sampling, and then realize that combined type single tube sampler 9 takes a sample under the constant speed state.
The utility model is when concrete the use, manually grab sample, promptly according to on-the-spot needs, at any time take a sample by the sampling key, but also automatic time sampling, i.e. default timing sampling pattern, 8 timing sampling patterns as every day, also can set constant duration timing sampling pattern for, as minimum time interval 10 minutes, as long as the automatic time sampling of different mode is set on host computer man-machine interface 1.
In sum, the utility model can not only effectively be carried out full automatic working, and make combined type single tube sampler 9 according to etc. annulus curve speed change advance, sampling process is adjusted sampling at any time according to the variation of pressure in the airduct, realizes the isokinetic sampling.Therefore, thoroughly solve the coal dust problem of sampling of thermal power plant's unit pulverized-coal system, avoided the influence of human factor sampled result, and then make the coal dust sampling result have more representativeness, effective increasing economic efficiency, and easy to operate, be easy to safeguard, can accomplish simultaneously regularly or sampling at any time.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment did, all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. full automatic pulverized coal sampling system, comprise combined type single tube sampler (9), described combined type single tube sampler (9) end is provided with sample tap (12), it is characterized in that: also comprise being used for driving the electric operator (10) that combined type single tube sampler (9) is advanced and withdrawed from pulverized coal channel, be used to control the master controller (2) of electric operator (10) action, the purge solenoid valve (4) that is connected by pressure piping one (15-1) and three-way connection (6) and the sampling solenoid valve (3) that is connected successively by pressure piping two (15-2), pressure-regulating valve (7) and negative pressure generator (8), described pressure piping two (15-2) is a malleation air intake opening end (13) near an end of sampling solenoid valve (3), described pressure piping two (15-2) other end and combined type single tube sampler (9) are joined, described pressure piping one (15-1) is located to join near an end of purge solenoid valve (4) and the malleation air intake opening (13) of pressure piping two (15-2), and described pressure piping one (15-1) other end and combined type single tube sampler (9) are joined; Be connected by pressure piping three (15-3) between described three-way connection (6) and the negative pressure generator (8), described pressure piping three (15-3) is provided with coal dust cyclone separator (5), and described coal dust cyclone separator (5) lower end is provided with the bottle (11) that keeps sample; Described electric operator (10) joins with master controller (2), and described master controller (2) also connects host computer man-machine interface (1).
2. according to the described full automatic pulverized coal sampling system of claim 1, it is characterized in that: also comprise the position detection unit (14) that the stroke and the position of combined type single tube sampler (9) are detected in real time, described position detection unit (14) is joined with master controller (2).
3. according to the described full automatic pulverized coal sampling system of claim 2, it is characterized in that: described position detection unit (14) is electric limit switch.
4. according to the described full automatic pulverized coal sampling system of claim 1, it is characterized in that: also comprise the acousto-optic warning unit (17) that joins with master controller (2) and be used for under-voltage and each the power unit overcurrent of system of pressurized air is carried out Realtime Alerts.
5. according to claim 1 or 2 described full automatic pulverized coal sampling systems, it is characterized in that: described master controller (2) is the PLC industrial control unit (ICU).
6. according to the described full automatic pulverized coal sampling system of claim 1, it is characterized in that: described host computer man-machine interface (1) is complete Chinese LCD touch screen operation interface.
7. according to the described full automatic pulverized coal sampling system of claim 1, it is characterized in that: described negative pressure generator (8) is provided with tensimeter (15).
8. according to the described full automatic pulverized coal sampling system of claim 1, it is characterized in that: all be connected between described electric operator (10) and the master controller (2) and between master controller (2) and the host computer man-machine interface (1) by umbilical cable (16).
9. according to claim 1 or 2 described full automatic pulverized coal sampling systems, it is characterized in that: described combined type single tube sampler (9) is the tack sampling gun.
10. according to the described full automatic pulverized coal sampling system of claim 1, it is characterized in that: described electric operator (10) is the small-sized electric line handspike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200210105U CN201974321U (en) | 2011-01-23 | 2011-01-23 | Full-automatic pulverized coal sampling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200210105U CN201974321U (en) | 2011-01-23 | 2011-01-23 | Full-automatic pulverized coal sampling system |
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| CN201974321U true CN201974321U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200210105U Expired - Fee Related CN201974321U (en) | 2011-01-23 | 2011-01-23 | Full-automatic pulverized coal sampling system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299690A (en) * | 2015-12-02 | 2016-02-03 | 江苏中能电力设备有限公司 | Fully-automatic online equalization system for pulverized coal |
| CN107063948A (en) * | 2017-07-01 | 2017-08-18 | 孙大欣 | A kind of full automatic pulverized coal sampling analysis instrument |
| CN109612785A (en) * | 2019-02-22 | 2019-04-12 | 大连中汇泰昌电力环保工程有限公司 | Dissipate the full-automatic unmanned sampling apparatus on duty of material |
-
2011
- 2011-01-23 CN CN2011200210105U patent/CN201974321U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299690A (en) * | 2015-12-02 | 2016-02-03 | 江苏中能电力设备有限公司 | Fully-automatic online equalization system for pulverized coal |
| CN107063948A (en) * | 2017-07-01 | 2017-08-18 | 孙大欣 | A kind of full automatic pulverized coal sampling analysis instrument |
| CN109612785A (en) * | 2019-02-22 | 2019-04-12 | 大连中汇泰昌电力环保工程有限公司 | Dissipate the full-automatic unmanned sampling apparatus on duty of material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20140123 |