CN103367028B - Have can electromagnetism manipulation, for diagnosing the pressure switch apparatus of the governor motion of pressure switch apparatus switch element functional characteristic - Google Patents
Have can electromagnetism manipulation, for diagnosing the pressure switch apparatus of the governor motion of pressure switch apparatus switch element functional characteristic Download PDFInfo
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- CN103367028B CN103367028B CN201310106839.9A CN201310106839A CN103367028B CN 103367028 B CN103367028 B CN 103367028B CN 201310106839 A CN201310106839 A CN 201310106839A CN 103367028 B CN103367028 B CN 103367028B
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- 230000033001 locomotion Effects 0.000 title claims abstract description 55
- 230000005284 excitation Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 description 7
- 238000003745 diagnosis Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Electromagnets (AREA)
Abstract
The present invention relates to a kind of pressure switch apparatus, have housing, balancing gate pit and switch element, balancing gate pit can be connected on work stressor by connector and be limited by governor motion that is relevant, that can move with the operating pressure applied and that implement airtightly.Switch element is arranged on outside balancing gate pit and can be operated by governor motion when reaching default minimum pressure values.Pressure switch apparatus have accommodate in the housing, can electric excitation movable coil and through movable coil guide, actuator tappet in the housing can be accommodated with moving, actuator tappet has the moving armature for operating switch element.According to the present invention, actuator tappet is the governor motion tappet with governor motion mechanical engagement simultaneously.Moving armature relative motion coil is so designed that and arranges so that when movable coil encourages moving armature beyond governor motion maximum operation distance outside being drawn at least partially in movable coil.Actuator tappet has for directly operating described switch element and the switching manipulation part of another second switch element.Switching manipulation part and two switch elements are so mutually arranged, make to operate any one in two switch elements when the minimum pressure values not up to preset, the first switch element can only be operated when reaching default minimum pressure values and do not affected by the operating pressure applied when encouraging movable coil and can only operate second switch element.
Description
Technical field
The present invention relates to a kind of pressure switch apparatus, there is housing, balancing gate pit and switch element, wherein, balancing gate pit can be connected on work stressor by means of connector, and by relevant with the operating pressure applied, governor motion that is movable and that design airtightly is defined.Switch element is arranged on outside balancing gate pit, and can be operated by governor motion when reaching default minimum pressure values.This pressure switch apparatus have accommodate in the housing, can the movable coil of electric excitation and guide through this movable coil, the actuator tappet that is movably received in housing, this actuator tappet has the moving armature for operating described switch element.
Background technology
Describing a kind of safety switch in German laid-open document DE 101 04 438 A1, it has a kind of dual safe shutdown function, and this safe shutdown function is driven by different physical values.Forming a kind of pressure sensitive regions by adpting flange and the film being included in this adpting flange, in this pressure sensitive regions, pressure is passed on depression bar.The axial direction identical with depression bar is provided with anchor bolt, on the electromagnetic field effect produced in coil to this crab-bolt.In the case of a fault, by preposition be supplied to arbitrary signal, the controller of preferable temperature signal encourage described coil, release slider can be carried out by this excitation by crab-bolt, thereby turn off the electrical contact of the particularly multipole design of described safety switch.Unrelated with this, even if discharging described slide block also by depression bar in the case of unallowed overvoltage.By discharging described slide block, recall the switching manipulation power being applied on electrical contact under normal ruuning situation.
Pressure switch apparatus reacts for the gaseous state of the work stressor in such as pipeline or the pressure change of liquid medium.In the case, usually applicating medium operates a kind of switch element to film or the mechanism to piston, this film or piston when pressure raises.The position of film or piston keeps constant in the case of constant pressure.For security reasons, typically applying mechanically operated switch element, such as micro switch, it needs contact and the most also can be worn.
It is alternatively possible to use the electronic switching element contactlessly worked, such as proximity switch of fork like grating, induction type etc..But needing the analysis electronic equipment of Redundancy Design in this case, ratio is if desired for by means of two processors.
In order to " reliably " interrupts the pipeline that is pressurized, need to reliably detect pipeline pressure, that is reliably detect the pressure drop less than the minimum pressure values preset.The scope of this working pressure is preferably placed in the scope of bar or double-digit bar of one digit number, such as 20bar.This minimum pressure values is preferably adjusted the half according to the working pressure run, and is such as adjusted to 10bar.
Here " reliably " refer to the Analyzing on Building A Planning Scheme for these required parts and must be fulfilled for the requirement in corresponding safe practice.In order to meet the highest current security class, observe according to EN according to the machinery requirement of up-to-date mechanical criteria 2006/42/EG
The PL e of ISO 1349-1；SIL 3 according to EN 61508 or 62061.Need some parts in the case, the diagnosis for functional characteristic can also be realized by these parts.
In order to meet the requirement of safe practice, apply the redundancy principle of diversification at present.It means that for redundancy reasons, use two pressure switch apparatus for pressure monitor, thus another pressure switch apparatus can also be used in the case of a pressure switch apparatus lost efficacy.On the other hand, this pressure switch apparatus must derive from different manufacturers, in order to avoid two pressure switch apparatus simultaneously, lost efficacy systematically.If it is supposed that it is different for constructing, design, improving and manufacturing, then the possibility for dual failures is the most minimum.
Summary of the invention
Therefore the task of the present invention is, proposes the pressure switch apparatus of a kind of diagnosis possibility with improvement.
This task is completed by the theme of independent claims.The advantageous embodiment of the present invention describes in the dependent claims.
According to the present invention, actuator tappet is to carry out the governor motion tappet of mechanically mating reaction with governor motion simultaneously.Moving armature designs as follows about movable coil and arranges, i.e. in the case of encouraging described movable coil, at least some of of moving armature is pulled in described movable coil beyond outside the maximum operation distance of governor motion.Actuator tappet also has for directly operating described switch element and the switching manipulation part of another second switch element in addition to moving armature.This switching manipulation part and said two switch element are mutually arranged as follows, i.e. in the case of the minimum pressure values not up to preset, either of which in said two switch element cannot be operated, in the case of reaching described default minimum pressure values, only can operate the first switch element, and in the case of encouraging described movable coil, the most only can operate second switch element with the operating pressure applied.
The switch element considered particularly mechanically operable, the switch element that need to contact, such as microswitch.
The combination of described movable coil and moving armature can also be referred to as movable coil magnet, movable magnet, attraction magnet or stroke electromagnet (Hubmagnet).Moving armature designs as follows, i.e. moving armature at least some of movable coil according to predetermined electric excitation in the case of be drawn in movable coil, in order to operate second switch element.
The core of the present invention is, almost can be advantageously carried out the reliable test through frayed most parts, that is (first) mechanical switching element for pressure switch apparatus in real-world conditions, wherein, this test also meets the safety standard described in article beginning and safety standard.
In the case, the switching manipulation by regulation of described (first) switch element can no matter be detected under the passive state or pressurized state of work stressor.This is realized beyond continuing to move to outside the regulation that maximally can be caused by governor motion or operation distance by described common regulation tappet and actuator tappet.Afterwards, can be realized by second switch element for the feedback for the diagnosis implemented.In the case, if the on off state of the first switch element can not stably change in the case of electricity manipulates described movable coil, then identify the first switch element and lost efficacy.
The bigger advantage thus brought is, can abandon the second pressure switch apparatus and connection important on security implications between them.
It is also advantageous in that: can the simple integration in pressure switch apparatus of the electric movable magnet manipulated.Moving armature longitudinally the most substantially centrally arranging about actuator tappet.It is by magnetizable material, be preferably made up of iron or steel.Additionally, its in its physical dimension as follows size with movable coil harmonious, i.e. moving armature moves on the direction of operating of governor motion.Additionally, the whole of movable magnet can the magnetic circuit of electric excitation so be sized so that it can overcome the relatively small contact spring power of described second switch element.
In one embodiment, governor motion can carry out pretension by spring force, thus can operate the first switch element in the case of reaching default minimum pressure values.Preferably by spring element, such as realize described pretension by column spring or disc spring.Pressure switch apparatus can also have the utensil for setting described minimum pressure values, such as regulate screw, for the pretension distance being set in described spring element.
In other embodiments, in order to operate in said two switch element, by actuator tappet and apply a switching manipulation power by governor motion tappet respectively simultaneously." operation " of switch element refers to the switching manipulation power that must apply the electrical contact for being opened or closed described switch element on one's own initiative, to overcome the contact spring power of described switch element.
In other embodiments, switch element has pair of switches contact, and they realize electricity Guan Bi in the case of applying described switching manipulation power.This switch element is also referred to as normally open contact (Schliesser).
In other embodiments, described switch element has pair of switches contact, and they realize electrically disconnected in the case of applying switching manipulation power.This switch element is also referred to as normally closed interlock (ffner).The switch element before described can also be the combination being made up of normally open contact and normally closed interlock.Therefore, switch element can also have multipair switch contact, the most two or three pairs of.The reliability of switch element is just improve by corresponding serial or parallel connection.Alternatively or additionally, pressure switch apparatus can have two or more switch elements, such as two microswitches, and they are in order to improve described switch reliability by serial or parallel connection.
" stable " change of on off state refers to, in the case of pressurization and therefore in the case of the first switch element of operation constantly existed, for the duration manipulating described movable magnet subsequently, also the on off state of the first switch element must be changed, say, that do not allow to be operated again.Same, when again to terminate the manipulation for described movable magnet to terminate described diagnosis, above description is also suitable for time upper reverse order.Otherwise, the vicious switching behaviour of the first switch element can thus be determined clearly.
In contrast, if manipulating described movable magnet in the case of without pressure and therefore in the case of existence the first switch element does not operates enduringly, then the on off state of the first switch element is allowed to change the most in short time.So, it is necessary to after the operation of the determination of second switch element, can determine that the burst on the first switch element the latest: do not operate-operate-do not operate.Same, when again to terminate the manipulation for described movable magnet to terminate described diagnosis, above description is also suitable for time upper reverse order.Otherwise, the vicious switching behaviour of the first switch element can the most also be determined clearly.
In the case of switch element is designed to normally open contact, the reason possible for above-mentioned situation is probably: the switch contact of the first switch element is glued or welds.In contrast, if switch element is designed to normally closed interlock, the most possible reason e.g.: although switch contact " is closed ", but exists and there is the contact stain of high resistance transition.The operation of second switch element and its subsequently terminate not operating in the case of the manipulation of described movable magnet is just reliably demonstrated at this, the first switch element machinery about its by specify switching behaviour in terms of the most detected.Therefore, this diagnosis has obtained effective enforcement.
This pressure switch apparatus may be advantageously used with and particularly reliably detects the predeterminable minimum pressure values pressure below fall at described work stressor.It can be particularly advantageous for the pressure drop detecting in the work stressor being designed to pipeline.
Accompanying drawing explanation
The present invention is described in detail with reference to embodiment.Wherein:
Fig. 1-3 shows the example of the pressure switch apparatus according to the present invention under different running statuses.
Reference numerals list:
1 pressure switch apparatus；
2 housings；
3 balancing gate pits；
4 inner chambers, nothing pressure chamber；
5 governor motions, film；
6 seals, O；
8 spring elements, column spring, compression spring；
9 actuators, movable magnet (Tauchmagnet), movable coil magnet (Tauchspulenmagnet)；
10 moving armatures (Tauchanker), governor motion tappet；
The end pieces of 11 governor motion sides, latching end；
12,14 magnetic flux leader；
13 mid portions, moving armature part；
15 switching manipulation parts；
16,17 projections, switching manipulation projection；
21 housing parts, connector；
22 housing parts, magnetic core；
23 yokes；
30 circuit carriers, printed circuit board；
70 shift knobs；
71 first switch elements, microswitch；
72 second switch elements, microswitch；
73 governor motion tappets, single tappet；
91 actuator tappets；
92 movable coils；
93 coil cases, coil；
94 insulators；
A implementation capacity；
F initial tension of spring；
P pressure, operating pressure；
S regulates power.
Detailed description of the invention
Fig. 1 shows an example of the pressure switch apparatus 1 according to the present invention under the mode of operation without pressure.Use film as governor motion 5.(not shown) alternatively, it would however also be possible to employ piston or another kind of suitably utensil are as governor motion 5.Pressure switch apparatus 1 and the overwhelming majority of its parts, in addition to switch element, preferably substantially symmetrically build about the main shaft drawn in dash-dot line.
Connector is represented, as being connected on work stressor a, part for pressure switch apparatus 1 housing 2 with reference 21.Representing balancing gate pit 3 with reference 3, it is limited by relevant with operating pressure p applied, governor motion 5 that is movable and that implement airtightly, changes the form that governor motion is here film.Represent the inner chamber of housing 2 with reference 4, it separates with balancing gate pit 3 on pressure, and substantially without pressure.
Additionally, pressure switch apparatus 1 has the first switch element 71 and another (second) switch element 72, both of which is arranged on the circuit carrier 30 outside balancing gate pit 3, and can be operated by governor motion 5.In an example shown, film 5 abuts on governor motion tappet 73, thus the regulation campaign of film 5 is also passed on the first switch element 71 on direction of operating indirectly in the case of pressure changes.Shown switch element 71,72 e.g. microswitch.This microswitch is also able to pretension by means of the spring element 8 being used for applying initial tension of spring F.Thus can set up a kind of minimum pressure values, in the case of this minimum pressure values, switch element 71 is operated.
Under the passive state shown by work stressor, i.e. in following state, wherein the pressure p of work stressor has a force value, this force value is not above that preset of pressure switch apparatus 1 or preregulated minimum pressure values, so governor motion 5 is located in the position on the left side, and this is caused by the intrinsic pretightning force of shown film 5 and pretightning force F especially by spring element 8.The most also switch element 71 is caused not operated.
According to the present invention, actuator tappet 91 has been and the governor motion tappet 73 of governor motion 5 mechanically mating reaction simultaneously.In an example shown, actuator tappet 91 and governor motion tappet 73 form a construction unit, the particularly construction unit of single type.Two components 73,91 can also be part single, that front and back arrange in housing 2 movingly in pressure-operated device.So, governor motion tappet 73 such as has the end pieces 11 of governor motion side, the mid portion 12 of cylindricality and the adjacent another part drawn the most further.And actuator tappet 91 has moving armature 13, mid portion 14 and switching manipulation part 15.
In the case, actuator tappet 91 is configured to the part of movable magnet 9 for movable coil magnet.This movable magnet has the movable coil 92 in the housing 2 being contained in pressure switch apparatus 1 and actuator tappet 91, and this actuator tappet is movably received in housing 2 and guides through movable coil 92.Movable coil 92 combines by coil case 93 or by coil and by the insulator 94 of surrounding.Actuator tappet 91 has moving armature 10 and for operating the switching manipulation part 15 of the first switch element 71 and another second switch element 72.This switching manipulation part 15 can also be incorporated in actuator tappet 91.In addition, moving armature 10 designs as follows about movable coil 92 and arranges, i.e. in the case of movable coil described in electric excitation 92, at least some of other places beyond the maximum operation distance of described governor motion 5 of moving armature 10 is pulled in movable coil.It is implemented as two-part and with 22 marks the housing parts magnetic core acting on magnetic field guiding.It is by magnetizable material, be particularly made up of iron or magnet steel.Yoke using the part as housing parts 22 that reference 23 mark extends radially inwardly.It is used for be guided to moving armature 10 by magnetic field produced by movable coil 92, so that this magnetic field can be closed by moving armature 10.
Under shown passive state, whole governor motion and actuator tappet 73,91 pass through initial tension of spring F to left movement.Therefore, the switching manipulation part 15 being driven equally not shift knob 70 with said two switch element 71,72 is rabbeted.Therefore, the two switch element is not operated.In the case, switching manipulation part 15 and two switch elements 71,72 are mutually arranged as follows, i.e. cannot operate said two switch element 71,72 any one when the minimum pressure not up to preset.
Fig. 2 shows that the pressure switch apparatus 1 according to the present invention for following situation, the i.e. pressure p of work stressor have a force value, and this force value has exceeded that preset of pressure switch apparatus 1 or preregulated minimum pressure values.Whole governor motion and actuator tappet 73,91 are moved right on direction of operating by regulation power S being at this moment applied on governor motion 5, and this regulation power S is more than initial tension of spring F.In the case, the first projection 16 being exemplarily arranged in switching manipulation part 15 makes the shift knob 70 of the first switch element 71 deflect, for switching manipulation sidepiece.Second switch element 72 remains inoperative, to this end, described switching manipulation part 15 and two switch elements 71,72 are mutually arranged as follows, i.e. only can operate described first switch element 71 when minimizing pressure.This is realized relative to the location staggered of the first switch element 71 by second switch element 72 in the example in figure 2, thus the shift knob 70(of second switch element 72 is also) do not arrive the second projection 17 by switching manipulation part 15 and deflect.In an example shown, switching manipulation part 15 has the projection 16,17 common for two shift knobs 70.Alternatively, switching manipulation part 15 can have two projections arranged with staggering on direction of operating 16,17.So, the shift knob 70 of the two switch element 71,72 can be arranged on identical position in the axial direction about main shaft.
Additionally, pressure switch apparatus 1 designs as follows so that the operation distance of a kind of maximum can not be exceeded by governor motion 5.Thus define operation distance or the regulation distance of maximum.This is realized by the backstop in housing parts 21 in the example of current Fig. 2, and it defines to the right described governor motion 5 or the motion of film 5.So, even if the governor motion reclined and actuator tappet 73,91 are also retained in shown position in the case of continuing the working pressure raised.Mark the end pieces of the governor motion side of whole governor motion and actuator tappet 73,91, this governor motion and actuator tappet to carry out acting on and abut on film 5, in order to transmit described operation distance through the pit in housing parts 21 with reference 11.
Fig. 3 shows the pressure switch apparatus 1 according to the present invention in the case of diagnosis.Regardless of whether be applied with operating pressure p, in the case of electric excitation is carried out for movable coil 92, being pulled at least partially in movable coil 92 outside the maximum operation distance beyond governor motion 5 of described moving armature 10.Operate described second switch element 72 from there through the second projection 17, and the first switch element 71 is not operated.If the excitation of actuator 9 starts to occur from the running status without pressure, then the state that the first switch element 71 never operates is set out and is operated in short time, and no longer operated from shift knob 70 moved aside of switch element 71 due to the first projection 16 afterwards.In contrast, if the excitation of movable magnet 9 starts to occur from the running status of pressurization, then the first switch element 71 changes to the state not operated, as long as movable magnet 9 is energized from the state of operation.
In the case of the current excitation of movable magnet 9, the mid portion 13 of moving armature 10 is pulled in movable coil 92 on the direction of operating of governor motion 5.As long as magnetic field can through the yoke 23 on the left side, again the magnetic flux part 12 through cylindricality, the magnetic flux part 14 through mid portion 13, again butt shape through the right and return the yoke 23 with less magnetic resistance through the right close, this mechanical movement will occur.Finally, switch operator 15 also has the blind hole for accommodating spring element 8.
Claims (5)
- null1. pressure switch apparatus，There is housing (2)、Balancing gate pit (3) and switch element (71)，Wherein，Balancing gate pit (3) can be connected on work stressor by means of connector (21)，And by relevant with the operating pressure (p) applied、Governor motion (5) that is that can move and that implement airtightly limits，Wherein，Switch element (71) is arranged on outside balancing gate pit (3)，And governor motion (5) operation can be passed through when reaching default minimum pressure values，And wherein said pressure switch apparatus has and is contained in housing (2)、Can the movable coil (92) of electric excitation and guiding through movable coil (92)、The actuator tappet (91) in housing (2) can be contained in moving，Described actuator tappet (91) has the moving armature (10) for operating described switch element (71)，It is characterized in that，Actuator tappet (91) is to carry out the governor motion tappet (73) of mechanically mating reaction with governor motion simultaneously,Moving armature (10) constructs as follows relative to movable coil (92) and arranges, make in the case of encouraging described movable coil (92) moving armature (10) beyond being pulled at least partially in movable coil (92) outside governor motion (5) maximum operation distanceActuator tappet (91) has for directly operating described switch element (71) and the switching manipulation part (15) of another second switch element (72), andThis switching manipulation part (15) and described switch element (71) and another second switch element (72) are mutually arranged as follows so thatAny one in described switch element (71) and another second switch element (72) cannot be operated in the case of the minimum pressure values not up to preset,In the case of reaching default minimum pressure values, it is merely able to operate the first switch element (71), andIndependently it is merely able to the operating pressure (p) applied operate second switch element (72) in the case of encouraging described movable coil (92).
- Pressure switch apparatus the most according to claim 1, it is characterised in that governor motion (5) passes through spring force (F) pretension, thus is operable to the first switch element (71) after reaching default minimum pressure values.
- Pressure switch apparatus the most according to claim 1 and 2, it is characterized in that, in order to operate any one in described switch element (71) and another second switch element (72), by actuator tappet (91) and apply a kind of switching manipulation power by governor motion tappet (73) respectively simultaneously.
- Pressure switch apparatus the most according to claim 3, it is characterised in that switch element (71,72) has pair of switches contact, described switch contact realizes electricity Guan Bi in the case of applying described switching manipulation power.
- 5., according to the pressure switch apparatus described in aforementioned claim 3, it is characterised in that switch element (71,72) has pair of switches contact, described switch contact realizes electrically disconnected in the case of applying described switching manipulation power.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012205147A DE102012205147B3 (en) | 2012-03-29 | 2012-03-29 | Pressure switch device for use with pressure source of pipeline, has switching elements that are not actuated when preset minimum pressure value is not reached |
| DE1020122051473 | 2012-03-29 | ||
| DE102012205147.3 | 2012-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103367028A CN103367028A (en) | 2013-10-23 |
| CN103367028B true CN103367028B (en) | 2016-09-07 |
Family
ID=47710983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310106839.9A Active CN103367028B (en) | 2012-03-29 | 2013-03-29 | Have can electromagnetism manipulation, for diagnosing the pressure switch apparatus of the governor motion of pressure switch apparatus switch element functional characteristic |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101461368B1 (en) |
| CN (1) | CN103367028B (en) |
| CH (1) | CH706313B1 (en) |
| DE (1) | DE102012205147B3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140426B (en) * | 2021-04-13 | 2023-08-08 | 西安航天动力研究所 | Mechanical pressure switch capable of realizing high-precision rigidity compensation and compensation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106267A (en) * | 1985-09-27 | 1987-05-27 | 罗斯蒙德公司 | High sensitivity magnetic regulator |
| DE10104438A1 (en) * | 2001-02-01 | 2002-08-08 | Stiebel Eltron Gmbh & Co Kg | Safety circuit-breaker for water heater, has anchor bolt actuated by electromagnetic coil or pressure pin |
| CN2544408Y (en) * | 2002-05-21 | 2003-04-09 | 北京威盾消防安全设备有限公司 | Pressure switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210550C2 (en) * | 1982-03-23 | 1984-09-20 | Leybold-Heraeus GmbH, 5000 Köln | Valve actuation device, in particular for vacuum valves |
| IT1262406B (en) * | 1993-09-03 | 1996-06-19 | Texas Instruments Inc | PRESSURE SENSITIVE SWITCH DEVICE. |
| JPH11185574A (en) * | 1997-12-18 | 1999-07-09 | Togami Electric Mfg Co Ltd | Pressure sensor for gas switch, gas blast load-break switch provided therewith and gas pressure detecting method for gas-blast load break switch |
| US7679362B2 (en) * | 2007-01-18 | 2010-03-16 | Gm Global Technology Operations, Inc. | Hall-effect pressure switch |
| EP2272076B1 (en) * | 2008-05-06 | 2013-11-06 | Siemens Aktiengesellschaft | Switching device |
-
2012
- 2012-03-29 DE DE102012205147A patent/DE102012205147B3/en active Active
-
2013
- 2013-02-18 CH CH00470/13A patent/CH706313B1/en not_active Application Discontinuation
- 2013-03-28 KR KR1020130033367A patent/KR101461368B1/en active Active
- 2013-03-29 CN CN201310106839.9A patent/CN103367028B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106267A (en) * | 1985-09-27 | 1987-05-27 | 罗斯蒙德公司 | High sensitivity magnetic regulator |
| DE10104438A1 (en) * | 2001-02-01 | 2002-08-08 | Stiebel Eltron Gmbh & Co Kg | Safety circuit-breaker for water heater, has anchor bolt actuated by electromagnetic coil or pressure pin |
| CN2544408Y (en) * | 2002-05-21 | 2003-04-09 | 北京威盾消防安全设备有限公司 | Pressure switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CH706313B1 (en) | 2016-10-31 |
| CH706313A2 (en) | 2013-09-30 |
| KR20130111398A (en) | 2013-10-10 |
| DE102012205147B3 (en) | 2013-03-07 |
| KR101461368B1 (en) | 2014-11-13 |
| CN103367028A (en) | 2013-10-23 |
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