CN87102149A - The control method of gas cementation sepage and fluid drip device - Google Patents
The control method of gas cementation sepage and fluid drip device Download PDFInfo
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- CN87102149A CN87102149A CN87102149.8A CN87102149A CN87102149A CN 87102149 A CN87102149 A CN 87102149A CN 87102149 A CN87102149 A CN 87102149A CN 87102149 A CN87102149 A CN 87102149A
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- fluid drip
- drip device
- transmission shaft
- orienting sleeve
- roller
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Abstract
A kind of control method and fluid drip device that is used for the sepage of thermo-chemical treatment gas cementation adopted a kind of custom-designed computer or PID setter of being used for, and realizes the drop-feeding gas carburization stove liquid amount of the splashing into instillator of control automatically.But the needs of carbon potential size in the root a tree name cementing furnace are regulated stepper motor and are changed the ram pump stroke, realize the purpose of liquid with precise control injection rate.Replace the method for traditional drop-feeding gas carburization stove inner control carbon potential size, shortened the carburization process time, reached the high effect of carbon-potential control precision in the stove, also improved quality product.
Description
The invention belongs to the control method and the carburizing equipment of gas cementation sepage in the thermo-chemical treatment.
Before the present invention did not make, workpiece carbonization adopted the drop-feeding gas carburization stove in the general thermo-chemical treatment.Carburizing agent is kerosene, acetone etc., and its control method is: 1. with manual shift transfusion catheter folder, naked eyes are counted the number that drips that carburizing agent splashes in the stove and are regulated carbon potential in the cementing furnace.2. the influx of controlling carburizing agent with the length of magnetic valve make-and-break time is controlled the carbon potential in the cementing furnace.3. the size of personnel selection wage adjustment segmented column plug pumping capacity is controlled the carbon potential in the cementing furnace.More than three kinds of its shortcomings of control method be and can not change and change the amount of splashing into of carburizing agent at any time that adjustable extent is little, causes the furnace pressure fluctuation big with carbon potential in the cementing furnace, the carburization process time is long, quality product is low, is difficult to realize that high precision controls.The present invention does an improvement at the shortcoming of above-mentioned control method and device, provide a kind of with computer or PID setter size according to carbon potential in the sensor detecting cementing furnace, automatically the continuous amount of splashing into of accurately regulating carburizing agent, thus realize the closed loop method and apparatus of control automatically.
Figure one is the control principle skeleton diagram
Automatic control of carbon potential is to realize like this in the drop-feeding gas carburization stove stove, when cementing furnace is worked, between stove carbon potential of interior moment and the controlling valu deviation is arranged slightly, the carbon potential measurement transmitter promptly produces signal input computer or PID setter, computer is according to the size of input deviation signal, and positive and negative its mathematical model of process ratio (P) integration (I) differential (D) computing is: L=-K
P△ C-K
I∫ △ Cdt-K
D(d △ c)/(dt) or press after P, I, D rule regulate through the PID setter produces the pulsed current controlled liq instillator of some amount, thereby realizes the automatically-controlled continuous that the carburizing agent amount of splashing into changes with carbon potential in the cementing furnace.Rate constant K in changing mathematical model of the computer
P, integration constant K
I, derivative constant K
DCan satisfy the adjusting requirement under the different operating state.
Figure two is fluid drip device structure iron
1 is ram pump among the figure, and 2 is limit switch, 3 limit baffle rings, 4 orienting sleeves, 5 roller shafts, 6 rollers, 7 transmission shafts, 8 control electric motor, 9 stroke adjustment push rods, 10 speed reduction units, 11 scale cards.
Main points of the present invention are to have adopted the produced fluid drip device of a kind of specialized designs, have replaced a traditional artificial naked eyes number number; Magnetic valve is intermittently open-minded; Traditional control method of ram pump manual shift flow.Said fluid drip device is made up of ram pump, limit switch, limit baffle ring, orienting sleeve, roller and roller shaft, transmission shaft, control electric motor and stroke adjustment push rod, speed reduction unit, scale card.The control electric motor is connected with transmission shaft through speed reduction unit, and the speed reduction unit shell is connected with scale card.By the positive and negative rotation of control electric motor, make transmission shaft drive the size of orienting sleeve, thereby solved the problem that changes the carburizing agent amount of splashing into along with the variation of Carbon Potential Inside Furnace in the cementing furnace through stroke adjustment push rod pilot plunger throw of pump.The control electric motor can be polytype electric motor, and adopting stepping motor is a preferred version.
The assembling form of fluid drip device is that the stroke adjustment push rod is connected with the mode of orienting sleeve with shrink-fit, transmission shaft is inserted in the orienting sleeve in movingly mode and is connected, roller is contained on the transmission shaft with the form that is threaded by roller shaft, roller can rotate on roller shaft, and transmission shaft transmits moment of torsion by roller to orienting sleeve.And limit switch and limit baffle ring have played the position limitation protection effect when the ram pump stroke is zero, and limit baffle ring can be crimped on the orienting sleeve.
The contriver once was an embodiment: referring to figure one, adopt computer, carbon potential measurement transmitter and fluid drip device to be used, when in the cementing furnace moment carbon potential and controlling valu when deviation is arranged, the carbon potential measurement transmitter produces in the signal input computer, computer according to signal operation after, send the pulsed current of some amount, make the stepping motor corner, thereby change the size of ram pump stroke, realize the cementing furnace of the carburizing agent amount of splashing into automatically-controlled continuous.The control accuracy of Carbon Potential Inside Furnace≤0.03%.
Claims (8)
1, a kind of control method that is used for the gas cementation sepage is characterized in that adopting computer or the PID setter signal according to Carbon Potential Inside Furnace in the carbon potential measurement sensor detecting cementing furnace, and the controlled liq instillator is regulated the amount of splashing into of carburizing agent automatically.
2, a kind of fluid drip device that is exclusively used in the described thermo-chemical treatment control method of claim 1, the size that it is characterized in that ram pump (1) stroke are to regulate push rod (9) by transmission shaft (7) through the rotation adjustment stroke of orienting sleeve (4) with control electric motor (8) to realize.
3, fluid drip device according to claim 2 is characterized in that said control electric motor (8) is a stepping motor.
4, fluid drip device according to claim 3, it is characterized in that stroke adjustment push rod (9) is connected with the form of orienting sleeve (4) with shrink-fit, join with form movingly between orienting sleeve (4) and the transmission shaft (7), the axial motion of orienting sleeve (4) outside transmission shaft (7) is to finish by the rolling of roller (6).
5, fluid drip device according to claim 4 is characterized in that having a roller (6), and roller (6) is installed on the transmission shaft (7) by roller shaft (5), and transmission shaft (7) transmits moment of torsion by roller (6) to orienting sleeve (4).
6,, it is characterized in that the shell of speed reduction unit (10) is connected by transmission shaft (7) with scale card (11) according to claim 2 or 4 described fluid drip devices.
When 7, fluid drip device according to claim 2, the stroke that it is characterized in that ram pump (1) are zero, limit switch (2) action.
8, fluid drip device according to claim 3 is characterized in that limit baffle ring (3) is crimped on the orienting sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102149 CN1019404B (en) | 1987-03-17 | 1987-03-17 | Control of gas carburization liquid and liquid drop injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102149 CN1019404B (en) | 1987-03-17 | 1987-03-17 | Control of gas carburization liquid and liquid drop injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87102149A true CN87102149A (en) | 1987-11-25 |
| CN1019404B CN1019404B (en) | 1992-12-09 |
Family
ID=4813842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102149 Expired CN1019404B (en) | 1987-03-17 | 1987-03-17 | Control of gas carburization liquid and liquid drop injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019404B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794789A (en) * | 2019-11-18 | 2020-02-14 | 江麓机电集团有限公司 | Infiltration acceleration control system based on direct generation type atmosphere carburization |
-
1987
- 1987-03-17 CN CN 87102149 patent/CN1019404B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794789A (en) * | 2019-11-18 | 2020-02-14 | 江麓机电集团有限公司 | Infiltration acceleration control system based on direct generation type atmosphere carburization |
| CN110794789B (en) * | 2019-11-18 | 2022-07-22 | 江麓机电集团有限公司 | Infiltration acceleration control system based on direct generation type atmosphere carburization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1019404B (en) | 1992-12-09 |
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| C14 | Grant of patent or utility model | ||
| C17 | Cessation of patent right |