CN2175948Y - Crystal thyratron electric-joint temp./pressure meter - Google Patents
Crystal thyratron electric-joint temp./pressure meter Download PDFInfo
- Publication number
- CN2175948Y CN2175948Y CN 93245768 CN93245768U CN2175948Y CN 2175948 Y CN2175948 Y CN 2175948Y CN 93245768 CN93245768 CN 93245768 CN 93245768 U CN93245768 U CN 93245768U CN 2175948 Y CN2175948 Y CN 2175948Y
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- CN
- China
- Prior art keywords
- control
- utility
- model
- thyristor
- vbt
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Abstract
The utility model relates to a crystal thyratron electric-joint temperature /pressure meter which comprises two control needles and two spacing elements. The utility model is characterized in that the utility model is also provided with the control assembly of the crystal thyratron which is directly assembled with the total body of the crystal thyratron electric-joint temperature /pressure meter. The utility model overcomes the defect in the prior art that the contact is oxygenized and even the control failure happens because of contact sparking. When the utility model is used, the contact is only needed to be conducted with tiny current, and thus the high current of the return circuit of the crystal thyratron can be started; thereby, the on-off control of the utility model is contactless; thus, the utility model can be directly used for the industrial control circuit of high power, and the application area can be widened. Because the control assembly can be directly installed in the casing of the utility model, the utility model has the advantages of reasonable structure, easy fabrication and unchanged space occupation.
Description
The utility model relates to a kind of electric contact table that is particularly suitable for temperature/pressure, comprises the motion control pin of two contact-carryings and the position-limited needle of two contact-carrying adjustable angle positions, can cause corresponding control pin to contact with position-limited needle when indicator rotates and send electric signal.
Existing electric contact temp/tensimeter often needs in automation control appliances such as petrochemical complex, but because of its contact capacity very little, generally be no more than 10 volt-amperes, maximum 30 volt-amperes, so will just can be applicable in the powerful industrial circuit by the auxiliary reclay circuit.The result of the frequent break-make in contact of indicator energy consumption but also produce electric spark and oxidized burning out not only simultaneously, and then loose contact, in addition ineffective.
Therefore, task of the present utility model is to provide a kind of thyristor electric contact table that is particularly suitable for temperature/pressure, it overcomes the little defective of power controlling in the prior art, the conducting power at electric contact place reduces on the contrary simultaneously, thereby has improved control performance, has prolonged serviceable life, and power controlling improves greatly and can directly apply in the industrial load circuit, but structure is also uncomplicated, and making or repacking are all very convenient, thereby economical and practical value is arranged very much.
Above-mentioned task the utility model is so to realize: a kind of thyristor electric contact table that is particularly suitable for temperature/pressure, comprise: two control pins and two position-limited needles, it is characterized in that: also equip a Control Component that comprises thyristor, it directly is fitted together with table Overall Group.
Preferred version of the utility model is, two control pins are placed in the both sides of indicator, and the circuit structure of Control Component is: power supply one end is connected to behind the diac again to two common points of controlling pins by two resistance in seriess (the 3rd, the 4th); The control utmost point of first thyristor is connected to first position-limited needle, the T of first thyristor
1-2End is connected to the power supply other end, its T
1-2And T
1-1The end and first resistance, the first capacitances in series assembly is in parallel and as a control end; Second thyristor control utmost point is connected to second position-limited needle, its T
2-2End is connected to the power supply other end, its T
2-1End and T
2-2The end and second resistance, second capacitances in series assembly parallel connection and as another control end.
Another preferred version of the utility model is, Control Component is installed in the box body, and box body is placed in watchcase inside.
Describe the utility model in detail by the specific embodiment in the accompanying drawing below.
Fig. 1 is a specific embodiment general illustration of the present utility model
Fig. 2 is an embodiment circuit diagram
Referring to Fig. 1, numbering 1 is overall for this table, and 2 is first position-limited needle, and 3 is second position-limited needle, 4 is that the first control pin is placed between first, second position-limited needle and leans against on first position-limited needle, and 5 is the second control pin, and 6 is support, and 7 is Control Component, 8 is box body, and 9 is connector socket, and 10 is indicator.
Comprise the one the second thyristor VBT among Fig. 2
1, VBT
2, first resistance R
1, second resistance R
2, first capacitor C
1, second capacitor C
2, the 3rd resistance R
3, the 4th resistance R
4, the 3rd capacitor C
3, diac VB, J
1, J
2, P
1, P
2Be out control circuit, E is a power supply.D, E are the imagination output terminal.T
1-1, T
1-2Be the two ends of first thyristor, T
2-1, T
2-2Be the two ends of second thyristor, A represents the common point of two control pins, and B represents the contact on first position-limited needle 2, and C represents the contact on second position-limited needle 3.Its principle of work is: when the AB contact is that the first control pin 4 and the first limit pin 2 contact then VBT
1Thyristor excitation conducting, i.e. J
1Energising work, when A and B disconnection, VBT
1By (but in the drawings under the external circuit, J
1Self-locking); When A and C connection, VBT
2Triggering and conducting, (outer load J
2Energising, P
2Open J
1Disconnect), suppose that promptly control end D connects.Diac VB is set positive and negative half-wave conduction angle is equated, can increase the steepness of trigger current again, improve and trigger performance.R
3, R
4Be control limit leakage resistance, C
3Be charging capacitor, R
1, C
1And R
2, C
2Be the moment overvoltage protection of over-voltage absorption element as VBT.Like this, by the big electric current of small control electrode current with regard to the may command thyristor, thereby make the electric current of table contact very little, and then the damage of having eliminated electric spark and having caused thus, mission life is improved greatly, increase greatly owing to the electric current of controlling in addition, so can directly apply in the industrial heavy load circuit control, and then enlarged the range of application and the field of this table, for the widespread usage of industrial automation has been created condition.
Described Control Component can be installed in the box body, then with table body but be fitted together, also can be directly installed in the housing or on back side of shell or the side.Can expect in addition, amplification control circuit about thyristor, those skilled in the art on the utility model specific embodiment basis, can make multiple remodeling setting as: (1) available single-phase thyristor control DC load, (2) available thyristor forms bistable circuit and directly controls industrial load.But it all belongs within the protection domain of these claims, and this also is the major reason that the application has only described a specific embodiment.
Claims (3)
1, a kind of thyristor electric contact table that is particularly suitable for temperature/pressure comprises two reducible movable control pins of contact-carrying, and two the fixedly position-limited needles that can transpose is characterized in that:
Also equip a Control Component that comprises thyristor, it directly is fitted together with table Overall Group.
2, by the electric contact table of stating of claim 1, it is characterized in that: two control pins (4,5) are placed in the both sides of indicator, and the circuit structure of described Control Component is: power supply one end is by current-limiting resistance (R
3, R
4) be connected to behind the diac again the common points of two control pins; The first thyristor VBT
1The control utmost point be connected to first position-limited needle (2, B), its (VBT
1) T
1-2End is connected to the power supply other end, its (VBT
1) T
1-1End and T
1-2The end and the first resistance (R
1) the first electric capacity (C
1) series component is in parallel and as a control end; The second thyristor VBT
2The control utmost point be connected to second position-limited needle (3, C), its (VBT
2) T
2-1End and T
2-2The end and the second resistance (R
2) the second electric capacity (C
2) series component is in parallel and as another control end.
3, by claim 1 or 2 described electric contact tables, it is characterized in that: Control Component (7) is settled in the box body (8), and box body (8) is installed on the interior support (6) of housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93245768 CN2175948Y (en) | 1993-12-01 | 1993-12-01 | Crystal thyratron electric-joint temp./pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93245768 CN2175948Y (en) | 1993-12-01 | 1993-12-01 | Crystal thyratron electric-joint temp./pressure meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2175948Y true CN2175948Y (en) | 1994-08-31 |
Family
ID=33818624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93245768 Expired - Fee Related CN2175948Y (en) | 1993-12-01 | 1993-12-01 | Crystal thyratron electric-joint temp./pressure meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2175948Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959174A (en) * | 2017-03-21 | 2017-07-18 | 株洲中车时代电气股份有限公司 | A kind of IGCT pressure-indication means |
-
1993
- 1993-12-01 CN CN 93245768 patent/CN2175948Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959174A (en) * | 2017-03-21 | 2017-07-18 | 株洲中车时代电气股份有限公司 | A kind of IGCT pressure-indication means |
| CN106959174B (en) * | 2017-03-21 | 2019-04-26 | 株洲中车时代电气股份有限公司 | A kind of thyristor pressure-indication means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |