CN103616119A - Novel pressure monitoring device and fire extinguisher with same - Google Patents
Novel pressure monitoring device and fire extinguisher with same Download PDFInfo
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- CN103616119A CN103616119A CN201310632365.1A CN201310632365A CN103616119A CN 103616119 A CN103616119 A CN 103616119A CN 201310632365 A CN201310632365 A CN 201310632365A CN 103616119 A CN103616119 A CN 103616119A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- 230000004308 accommodation Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 210000002445 nipple Anatomy 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 9
- 230000005489 elastic deformation Effects 0.000 description 7
- 230000007812 deficiency Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Abstract
The invention provides a novel pressure monitoring device and a fire extinguisher with the pressure monitoring device. The pressure monitoring device comprises a connector with an air inlet through hole and a connecting shell body with a pressure monitoring switch arranged inside, the connector is communicated with the interior of fire extinguishing and protection gas storage equipment, the connecting shell body is in sealing connection with the connector, and the pressure monitoring device is connected with a warning device. The pressure monitoring device is good in sealing performance, high in safety performance and reliable in connection, the defect that the inner gas pressure value of the fire extinguishing and protection gas storage equipment is hard to monitor is overcome, and the inner gas pressure value of the fire extinguishing and protection gas storage equipment is monitored through the pressure monitoring device. When the gas pressure of the fire extinguishing and protection gas storage equipment is too low, the warning device gives an alarm, and the situations that the inner pressure of the fire extinguishing and protection gas storage equipment is lowered due to leakage and other reasons, people cannot detect the pressure reduction easily, and greater losses are caused due to the fact that the fire extinguishing and protection gas storage equipment cannot be used in fire extinguishment are avoided.
Description
Technical field
The invention belongs to fire-fighting fire extinguishing technical field, particularly the flame snuffer of a kind of novel pressure monitoring device and this pressure monitoring device of employing.
Background technology
Fire-fighting fire-extinguishing equipment is in the market mostly built-in high pressure tank conventionally utilizes huge pressure differential fire extinguishing agent to be ejected to reach from fire-fighting fire-extinguishing equipment the object of fire extinguishing in fire extinguishing operation.But when fire-fighting fire-extinguishing equipment is after idle a period of time, the gases at high pressure of storage inside may make air pressure deficiency due to reasons such as leakage, in the time need to putting out a fire, use the fire-protection equipment of air pressure deficiency often to have a strong impact on the process of fire extinguishing, finally result in greater loss; Even if be provided with the equipment of the current fire-fighting fire-extinguishing equipment atmospheric pressure values of demonstration such as pressure gauge, often also cannot to the fire-fighting fire-extinguishing equipment of air pressure deficiency, make alarm in time, prompting people change the fire-fighting fire-extinguishing equipment of air pressure deficiency, to guarantee that fire-protection equipment is in normal condition.
Summary of the invention
For solving defect of the prior art, the invention provides the flame snuffer of a kind of novel pressure monitoring device and this pressure monitoring device of employing, the built-in microswitch of this pressure monitoring device, the very first time is made alarm to the fire-fighting fire-extinguishing equipment of air pressure deficiency effectively, prompting people need to change the fire-fighting fire-extinguishing equipment of air pressure deficiency, have reached the monitoring of fire-fighting fire-extinguishing equipment being used to state.
Technical scheme:
A kind of novel pressure monitoring device, comprise joint, pressure monitoring switch, connect housing and warning device, described joint is fixed on one end of described connection housing, make described joint and described connection housing form a spatial accommodation, described pressure monitoring switch is positioned at described spatial accommodation and is connected with described warning device, the air inlet through hole that described joint is axially arranged with perforation along it is for being communicated with described spatial accommodation and pressure vessel inner chamber to be monitored, described pressure monitoring switch comprises the diaphragm with the coaxial setting of described air inlet through hole, axially displaceable push rod and be fixed on the microswitch on described connection housing, described diaphragm is fixed on the inner opening that covers described air inlet through hole on the inner face of described joint with sealing, one end of described push rod is fixedly connected with described diaphragm, under the promotion of described diaphragm, the startup of the other end of described push rod triggering microswitch makes described warning device in standby, when push rod leaves cannot continue to trigger microswitch and start time under the pulling of described diaphragm, described warning device starts to report to the police.
Described pressure monitoring switch also comprises annular fixed station and groups of springs, described annular fixed station is fixed on the inside of described connection housing, in described annular fixed station, be provided with the through hole suitable with described push rod, the lower end edge lateral wall of the close described diaphragm of described push rod is provided with Spring Card platform, and described groups of springs is enclosed within described push rod between described Spring Card platform and annular fixed station lower surface.
Described microswitch includes fixed pedestal, fixed block, microswitch body and feeler lever, described microswitch is positioned at described annular fixed station top, described fixed pedestal is fixed on the inside that connects housing, and described fixed pedestal is provided with the through hole suitable with described microswitch body vertically, described fixed block is fixed on the upper surface of described fixed pedestal and tangent with the upper shed limit of described through hole, described microswitch body inserts the through hole of described fixed pedestal and is fixedly connected with fixed block, the lower end of described microswitch body is fixed with described feeler lever, described push rod top contacts with described feeler lever through the through hole of described annular fixed station, the upper end of described microswitch body is signal output part, described signal output part is connected with described warning device by wire.
Described diaphragm is stainless steel, and its thickness is 0.05mm.
Described groups of springs comprises 3-6 group saucer washer formula spring, and described in every group, the thickness of spring is 2mm-4mm.
Described connection housing comprises connector and rear cover body, described connector and described rear cover body are the tubular construction of both ends open, the open top end lateral wall of described connector is provided with external thread, the bottom open end madial wall of described rear cover body is provided with internal thread, in order to described connector top is fixed on to described rear cover body bottom; Described connector inside is provided with the connector through hole of mutual perforation along axis; Described connector bottom open end inwardly forms the first cavity, and its open top end inwardly forms the second cavity; Radially outwardly formation one annular boss of described nipple tip, described the first cavity and described joint annular boss are suitable, in order to described joint annular boss is nested to described the first cavity, the top of described joint is provided with Gask-O-Seal, and the described joint annular boss position corresponding with described the first cavity inner bottom surface is provided with the annular groove suitable with described Gask-O-Seal; The described connector bottom open end position corresponding with described joint annular boss is provided with fixed card platform, in order to described joint annular boss sealing is fixed in described the first cavity; Described the first cavity inner bottom surface center forms a concave station vertically; Described fixed pedestal is arranged in the open top end of described rear cover body, described fixed pedestal is that cylindrical structure and lateral wall are provided with the external thread corresponding with described rear cover body bottom open end madial wall internal thread, in order to the mode by screw-threaded engagement, is fixed in rear cover body bottom open end; Described annular fixed station is fixedly installed on the described rear cover body bottom open end madial wall position corresponding with described push rod top.
The open top end madial wall of described rear cover body is corresponding with the top of described microswitch body is provided with fixed head, described fixed head is close on the top end surface of described microswitch body, described fixed head is provided with wire guide, in order to the described wire that microswitch body top is connected, derives.
Described rear cover body open top end inner face is cast with epoxy resin layer between described fixed head, in described epoxy resin layer, be provided with lead channels, in order to described wire is derived, described rear cover body open top end is provided with cover plate along end face, described cover plate is provided with lead channels, in order to wire is derived.
Described connection housing, described joint, described push rod, described fixed pedestal or employing carbon constructional quality steel material.
A kind of flame snuffer, the pressure vessel described to be monitored that comprises internal high-voltage gas, described pressure vessel to be monitored is provided with the internal thread interface being connected with described joint bottom, also comprise above-mentioned a kind of novel pressure monitoring device, described gases at high pressure are nitrogen, and described pressure vessel to be monitored is pressure bottle.
Technique effect:
The flame snuffer that the invention provides a kind of novel pressure monitoring device and this pressure monitoring device of employing, compared to the prior art, the present invention has following beneficial effect:
A kind of novel pressure monitoring device, comprise joint, pressure monitoring switch, connect housing and warning device, joint is fixed on the one end that connects housing, make joint and be connected housing and form a spatial accommodation, pressure monitoring switch is positioned at spatial accommodation and is connected with warning device, makes warning device can receive the signal of pressure monitoring switch and process.The air inlet through hole that joint is axially arranged with perforation along it connects enclosure interior spatial accommodation and pressure vessel inner chamber to be monitored for being communicated with, pressure monitoring switch comprises the diaphragm with the coaxial setting of air inlet through hole, axially displaceable push rod be fixed on the microswitch being connected on housing, diaphragm is fixed on the inner opening that covers air inlet through hole on the inner face of joint with sealing, one end of push rod is fixedly connected with diaphragm, the other end of push rod contacts with microswitch, in diaphragm is subject to pressure vessel to be monitored, transmit normal pressure time, diaphragm itself expands distortion towards pressure direction, produce displacement and form the thrust to push rod, when push rod is when the promotion of diaphragm is moved to working position, push rod triggers microswitch and starts, now warning device receives that microswitch starts as normal holding state, when pressure vessel internal gas pressure to be monitored weakens, the state of the original elastic deformation of diaphragm weakens the beginning reset that bounces back gradually along with pressure vessel internal gas pressure to be monitored gradually, the pulling force that now push rod is subject to diaphragm is left working position, cause push rod cannot continue to trigger the startup of microswitch and warning device is given the alarm by the signal intensity to microswitch, the hypotony of prompting people's pressure vessel to be monitored inside, need to treat monitoring pressure container internal pressure and monitor to guarantee that pressure vessel to be monitored is in normal stable duty.
Pressure monitoring switch also comprises annular fixed station and groups of springs, annular fixed station is fixed on the inside that connects housing, in annular fixed station, be provided with the through hole suitable with push rod, the lower end edge lateral wall of the close diaphragm of push rod is provided with Spring Card platform, groups of springs is enclosed within push rod between Spring Card platform and annular fixed station lower surface, thereby reduce push rod because diaphragm when producing excessive excessive the suffering damage of parts pressurized that makes microswitch of displacement when flame snuffer pressure bottle causes pressure of the inside of a bottle reduction because of reasons such as leakages, the pressure that diaphragm is subject to weakens, even disconnecting of push rod and diaphragm, also can head on diaphragm by the elastic thrust promotion feeler lever of spring and continue to do retraction reseting movement, effect is more stable and accurate.
Microswitch includes fixed pedestal, fixed block, microswitch body and feeler lever, microswitch is positioned at annular fixed station top, fixed pedestal is fixed on the inside that connects housing, and fixed pedestal is provided with the through hole suitable with microswitch body vertically, fixed block is fixed on the upper surface of fixed pedestal and tangent with the upper shed limit of through hole, make microswitch body be inserted the through hole of fixed pedestal and be fixedly connected with fixed block, the lower end of microswitch body is fixed with the feeler lever feeler lever that starts microswitch, push rod top contacts with feeler lever through the through hole of annular fixed station, make diaphragm and push rod and feeler lever form one, the upper end of microswitch body is signal output part, signal output part is connected with warning device by wire, by the elastic deformation after diaphragm pressurized, make feeler lever start or not start microswitch, microswitch is started to the signal changing and pass to warning device, warning device carries out standby or warning to the signal intensity of microswitch.
Preferably, diaphragm is stainless steel, has higher stability, corrosion-resistant, and its thickness is preferably 0.05mm.
Preferably, groups of springs comprises 3-6 group saucer washer formula spring, and saucer washer formula spring rate is large, and buffering vibration absorption ability is strong, can bear large load with small deformation, is suitable for the little occasion of axial space requirement, and the thickness of spring is preferably 2mm-4mm.
Connect housing and comprise connector and rear cover body, connector and rear cover body are the tubular construction of both ends open, the open top end lateral wall of connector is provided with external thread, and the bottom open end madial wall of rear cover body is provided with internal thread, in order to connector top is fixed on to rear cover body bottom; Connector inside is provided with the connector through hole of mutual perforation along axis; Connector bottom open end inwardly forms the first cavity, and its open top end inwardly forms the second cavity; Radially outwardly formation one annular boss of nipple tip, the first cavity and joint annular boss are suitable, in order to joint annular boss is nested to the first cavity, the top of joint is provided with Gask-O-Seal, and the joint annular boss position corresponding with the first cavity inner bottom surface is provided with the annular groove suitable with Gask-O-Seal in order to Gask-O-Seal is embedded in annular groove; The connector bottom open end position corresponding with joint annular boss is provided with fixed card platform, in order to the sealing of joint annular boss is fixed in the first cavity, forms fixing effect; The first cavity inner bottom surface center forms a concave station vertically, the enough spaces that need when the structure of concave station can provide diaphragm generation elastic deformation; Fixed pedestal is arranged in the open top end of rear cover body, fixed pedestal is that cylindrical structure and lateral wall are provided with the external thread corresponding with rear cover body bottom open end madial wall internal thread, in order to the mode by screw-threaded engagement, is fixed in rear cover body bottom open end; Annular fixed station is fixedly installed on the rear cover body bottom open end madial wall position corresponding with push rod top, uses so that the moving direction of push rod can not depart from.
The open top end madial wall of rear cover body is corresponding with the top of microswitch body is provided with fixed head; fixed head is close on the top end surface of microswitch body; fixed head is provided with wire guide; in order to the wire that microswitch body top is connected, derive; make the inner enclosure space that forms of rear cover body, the parts of protection rear cover body inside.
Rear cover body open top end inner face is cast with epoxy resin layer between fixed head, in epoxy resin layer, be provided with lead channels, in order to wire is derived, rear cover body open top end is provided with cover plate along end face, cover plate is provided with lead channels, in order to wire is derived, epoxy resin layer can reduce dust and enter, and makes the parts such as microswitch avoid being subject to the impact generation wearing and tearing of dust or the loose contact of rocking generation of wire.
Connect housing, joint, push rod, fixed pedestal and (or) adopt carbon constructional quality steel material.The strength of materials of carbon constructional quality steel material is high, and good stability, cost are low.
A flame snuffer, comprises that the pressure vessel to be monitored of internal high-voltage gas, pressure vessel to be monitored are provided with the internal thread interface being connected with joint bottom, also comprise above-mentioned a kind of novel pressure monitoring device, gases at high pressure are nitrogen, and nitrogen is inert gas, not combustion-supporting.Pressure vessel to be monitored is preferably pressure bottle.
Accompanying drawing explanation
Fig. 1 is the structural representation of fire extinguishing jet device in the present invention;
In figure, each label example is as follows:
1-joint, 10-air inlet through hole, 11-joint annular boss, 12-Gask-O-Seal, 2-connector, 21-the first cavity, 22-concave station, 23-fixed card platform, 24-the second cavity, 25-connector through hole, 3-rear cover body, 31-annular fixed station, 32-fixed head, 33-cover plate, 4-pressure monitoring device, 40-pressure monitoring switch, 41-push rod, 42-microswitch, 421-microswitch body, 422-feeler lever, 43-fixed pedestal, 431-fixed block, 44-groups of springs, 45-wire, 46-epoxy resin layer, 5-diaphragm, 6-warning device.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention discloses the flame snuffer of a kind of novel pressure monitoring device and this pressure monitoring device of employing, Fig. 1 is the structural representation of pressure monitoring device 4 in the present invention, as shown in Figure 1: flame snuffer (not marking) comprises the pressure vessel to be monitored (not marking) of internal high-voltage gas, in the present embodiment, preferred pressure vessel to be monitored is flame snuffer pressure bottle (not marking), because nitrogen is not combustion-supporting inert gas, so nitrogen is preferably the built-in gases at high pressure of flame snuffer pressure bottle in the present embodiment.
Further, the sidewall of flame snuffer pressure bottle is provided with the internal thread interface (not marking) being connected with pressure monitoring device 4, particularly, pressure monitoring device 4 comprises joint 1, pressure monitoring switch 40 and is connected housing and warning device 6, joint 1 is fixed on the one end that connects housing, make joint 1 and be connected a spatial accommodation of housing formation, pressure monitoring switch 40 is fixed in above-mentioned spatial accommodation and is connected with warning device 6 by wire 45, makes warning device 6 can receive the signal of pressure monitoring switch 40 and process.Joint 1 bottom outside wall is provided with external thread, be threaded connection with the internal thread interface of flame snuffer pressure bottle and be connected, joint 1 is axially arranged with the air inlet through hole 10 of perforation along it, for being communicated with, connect the spatial accommodation of enclosure interior and the inner chamber of flame snuffer pressure bottle, and the gas storage atmospheric pressure value in monitoring pressure bottle.Pressure monitoring switch 40 comprises with diaphragm 5, the axially displaceable push rod 41 of the coaxial setting of air inlet through hole 10 and is fixed on the microswitch 42 being connected on housing; Diaphragm 5 is fixed on the inner opening that covers air inlet through hole 10 on the inner face of joint 1 with sealing.One end of push rod 41 is fixedly connected with diaphragm 5, the preferred push rod 41 of the present embodiment and gluing being fixedly connected with of employing diaphragm 5, the other end of push rod 41 contacts with microswitch 42, in diaphragm 5 is subject to flame snuffer pressure bottle, transmit normal pressure time, diaphragm 5 itself expands distortion towards pressure direction, produce displacement and form the thrust to push rod 41, when push rod 41 is when the promotion of diaphragm 5 is moved to working position, push rod 41 triggers microswitch 42 and starts, now warning device 6 receives that microswitch 42 starts as normal holding state, when flame snuffer pressure bottle internal gas pressure weakens, the state of diaphragm 5 original elastic deformations weakens the beginning reset that bounces back gradually along with flame snuffer pressure bottle internal gas pressure gradually, the pulling force that now push rod 41 is subject to diaphragm 5 is left working position, cause push rod 41 cannot continue to trigger the startup of microswitch 42 and make warning device 6 by the signal intensity of microswitch 42 is given the alarm, the hypotony of prompting people's flame snuffer pressure bottle inside, need to monitor to guarantee that flame snuffer pressure bottle is in normal stable duty to flame snuffer pressure bottle internal pressure.
Concrete, radially outwardly formation one annular boss in joint 1 top; Connect housing and comprise connector 2 and rear cover body 3, connector 2 and rear cover body 3 are the tubular construction of both ends open, the open top end lateral wall of connector 2 is provided with external thread, and the bottom open end madial wall of rear cover body 3 is provided with internal thread, in order to connector 2 tops are fixed on to rear cover body 3 bottoms; Connector 2 inside are provided with the connector through hole 25 of mutual perforation along axis; Connector 2 bottom open end inwardly form the first cavity 21, and its open top end inwardly forms the second cavity 24; The first cavity 21 is suitable with joint annular boss 11, in order to joint annular boss 11 is nested to the first cavity 21, between joint annular boss 11 and the first cavity 21 inner bottom surfaces, be provided with Gask-O-Seal 12, joint annular boss 11 position corresponding with the first cavity 21 inner bottom surfaces is provided with the annular groove suitable with Gask-O-Seal 12, in order to Gask-O-Seal 12 is embedded in annular groove; The connector 2 bottom open end position corresponding with joint annular boss 11 is provided with fixed card platform 23, described fixed card platform 23 one end are fixed on described connector 2 bottom open end end faces, the other end extends to the corresponding position of described joint annular boss 11, in order to joint annular boss 11 is stuck in the first cavity 21, form fixing effect, by Gask-O-Seal 12, make joint and the first cavity 21 form a hermetically-sealed construction; The first cavity 21 inner bottom surface centers are concave station 22 of recessed formation vertically, connector through hole 25 will concave station 22 connects between Gask-O-Seals 12 and the first cavity 21 inner bottom surfaces and is provided with diaphragm 5, makes diaphragm 5 can stably be fixed on the inner face of joint 1 inner opening with sealing covering air inlet through hole 10; In diaphragm 5 is subject to flame snuffer pressure bottle, transmit pressure time, diaphragm 5 itself, towards pressure direction generation elastic deformation, forms displacement, enough spaces that the structure of concave station 22 needs in the time of can providing diaphragm 5 that elastic deformation occurs.
Further, pressure monitoring switch 40 is fixed in connector 2, comprises annular fixed station 31 and groups of springs 44, annular fixed station 31 is arranged on the rear cover body 3 bottom open end madial walls position corresponding with push rod 41 rear ends, the lateral wall of annular fixed station 31 is provided with and is provided with the external thread suitable with rear cover body 3 bottom open end internal threads, in order to be fixed on rear cover body 3 bottom open end madial walls, the lower end edge lateral wall of the close diaphragm 5 of push rod 41 is provided with Spring Card platform, groups of springs 44 is enclosed within push rod 41 between Spring Card platform and annular fixed station 31 lower surfaces, thereby in order to reduce push rod 41 because diaphragm 5 when producing excessive excessive the suffering damage of parts pressurized that makes microswitch 42 of displacements when flame snuffer pressure bottle causes pressure of the inside of a bottle reduction because of reasons such as leakages, the pressure that diaphragm 5 is subject to weakens, even disconnecting of push rod 41 and diaphragm 5, also can head on diaphragm 5 by the elastic thrust promotion feeler lever 41 of groups of springs 44 and continue to do retraction reseting movement, effect is more stable and accurate.
In annular fixed station 31, establish the through hole suitable with push rod 41, push rod 41 tops are connected with feeler lever 422 through the through hole of annular fixed station 31, the bottom of push rod 41 is connected with diaphragm 5 through connector through hole 25, in diaphragm 5 is subject to flame snuffer pressure bottle, transmit pressure time, diaphragm 5 itself expands distortion towards pressure direction, form displacement, when the air pressure of flame snuffer pressure bottle is too small, itself also can there is towards the opposite direction of pressure retraction distortion in diaphragm 5, same formation displacement, while being therefore subjected to displacement, thereby being also subjected to displacement simultaneously, the feeler lever being connected with diaphragm 5 422 opens microswitch 42, signal is passed to warning device 6 from the signal output part on microswitch 42 tops by wire 45, warning device 6 is given the alarm.The bottom of push rod 41 is provided with Spring Card platform along lateral wall, groups of springs 44 is enclosed within on the lateral wall of push rod 41, the top of push rod 41 is through annular fixed station 31, the bottom of groups of springs 44 withstands on Spring Card platform like this, its top withstands on annular fixed station 31, reduce push rod 41 because thereby diaphragm 5 produces excessive excessive the suffering damage of parts pressurized that makes microswitch 42 of displacement, simultaneously when flame snuffer pressure bottle causes pressure of the inside of a bottle to reduce because of reasons such as leakages, the pressure that diaphragm 5 is subject to weakens, starting to do retraction reseting movement push rod 41 can be under the effect of disk spring, even if the connection of push rod 41 and diaphragm 5 disconnects, also can promote by the elastic thrust of spring feeler lever 422 and head on diaphragm 5 work retraction reseting movements, effect is more stable and accurate.
Further, groups of springs 44 comprises 3-6 group saucer washer formula spring, saucer washer formula spring rate is large, and buffering vibration absorption ability is strong, can bear large load with small deformation, be suitable for the little occasion of axial space requirement, the thickness of spring is 2mm-4mm, and in the present embodiment, preferably groups of springs 44 comprises 6 groups of saucer washer formula springs, and the thickness of every group of saucer washer formula spring is 4mm, the elastic force of every group of saucer washer formula spring is 500N-700N, and the excellent every group of saucer washer formula spring force of the present embodiment is 504N.
Microswitch 42 is positioned at annular fixed station 31 tops, microswitch 42 comprises fixed pedestal 43, fixed block 431, microswitch body 421 and feeler lever 422, concrete, fixed pedestal 43 is arranged on the open top end inner side of rear cover body 3, fixed pedestal 43 is provided with the external thread corresponding with rear cover body 3 bottom open end madial wall internal threads for cylindrical structure and sidewall, and be fixed in rear cover body 3 bottom open end by the mode of screw-threaded engagement, fixed pedestal 43 is provided with the through hole corresponding with microswitch vertically; Microswitch body 421 is round bar shape structure, and its bottom is fixed with the feeler lever 422 that can start microswitch 42; Fixed block 431 is fixed on the upper surface of fixed pedestal 43 and tangent with the upper shed limit of the through hole of fixed pedestal 43, make microswitch body 421 be inserted the through hole of fixed pedestal 43 and be fixedly connected with fixed block 431, push rod 41 tops contact with feeler lever 422 through the through hole of annular fixed station 31, make diaphragm 5 and push rod and feeler lever 422 form one.The upper end of microswitch body 421 is signal output part, signal output part is connected with warning device 6 by wire 45, by the elastic deformation after diaphragm 5 pressurizeds, make feeler lever 422 start or not start microswitch 42, microswitch 42 is started to the signal changing and pass to warning device 6, the signal intensity of 6 pairs of microswitches 42 of warning device carries out standby or warning.
Further; the open top end madial wall of rear cover body 3 is corresponding with the top of microswitch body 421 is provided with fixed head 32; fixed head 32 is close on the top end surface of microswitch body 421; fixed head 32 is provided with wire 45 holes; in order to the wire 45 that microswitch body 421 tops are connected, derive; make the inner enclosure space that forms of rear cover body 3, the parts of protection rear cover body 3 inside.
Further, rear cover body 3 open top end inner faces are cast with epoxy resin layer 46 between fixed head 32, epoxy resin has and in excellent bonding strength epoxy resin layer 46, is provided with wire 45 passages the surface of metal and nonmetallic materials, in order to wire 45 is derived, rear cover body 3 open top end are provided with cover plate 33 along end face, cover plate 33 is provided with wire 45 passages, in order to wire 45 is derived, epoxy resin layer 46 can reduce dust and enter, and makes microswitch 42 avoid being subject to the wearing and tearing of dust generation or the loose contact that wire 45 rocks generation.
As preferred version, diaphragm 5 is stainless steel, and stainless diaphragm 5 has higher stability, corrosion-resistant, good toughness, and the thickness of the preferred diaphragm 5 of the present embodiment is 0.05mm.
Connection housing, joint 1, push rod 41, fixed pedestal 43 are metal construction, in the present embodiment, connect housing, joint 1, push rod 41, fixed pedestal 43 and be all preferably carbon constructional quality steel material, the strength of materials of carbon constructional quality steel material is high, and good stability, cost are low.
Concrete mounting means, first that Gask-O-Seal 12 is nested on the annular groove of joint 1 bottom, joint annular boss 11 is nested to the first cavity 21 of connector 2, again with diel by fixed card platform 23 Pressing Deformations, tightly upper at joint annular boss 11 of sticker of the one end that makes fixed card platform 23, make joint annular boss 11 compress Gask-O-Seal 12 and diaphragm 5, make diaphragm 5 be fixed on the inner opening that covers air inlet through hole 10 on the inner face of joint 1 with sealing, connected mode by joint 1 by screw-threaded engagement is connected with the internal thread interface of flame snuffer pressure bottle, can form being tightly connected between joint 1 and flame snuffer pressure bottle.Gask-O-Seal 12, under the extruding of joint annular boss 11, has played good sealing effectiveness, and meanwhile, the position of diaphragm 5 is fixed effect by the extruding of Gask-O-Seal.The bottom of push rod 41 is connected with diaphragm 5 through connector through hole 25, so push rod 41 is also along with the elastic displacement of diaphragm 5 is also and then carried out displacement movement.Groups of springs 44 is enclosed within on the lateral wall of push rod 41, first annular fixed station 31 is passed in the top of push rod 41, the bottom of groups of springs 44 withstands on Spring Card platform like this, and top withstands on annular fixed station 31, the thrust that groups of springs 44 is formed push rod 41.And then, microswitch 42 is inserted to the through hole of fixed pedestal 43 and is fixed on fixed block 431, the signal output part of microswitch 42 is connected with wire 45, then mode fixed pedestal 43 being threaded connection is embedded in rear cover body 3 openends, again annular fixed station 31 is also embedded in rear cover body 3 openends according to the mode being threaded equally, now the top of push rod 41 is touched mutually through the feeler lever 422 with microswitch body 421 bottoms from the through hole of annular fixed station 31, at this moment the mode that is threaded connection is fixed on connector 2 open top end by rear cover body 3 bottom open end and connects housing to form, rear cover body 3 open top end inner faces are made to connect housing and reach sealing state to being cast with epoxy resin layer 46 between fixed head 32, the parts of protection rear cover body 3 inside avoid being subject to the loose contact of rocking generation that the impact of dust produces wearing and tearing or wire 45 as microswitch 42 grades.
Further, beginning is to flame snuffer pressure bottle filled with gas and fire extinguishing agent, the high pressure of the γ-ray emission in bottle directly acts on diaphragm 5 by joint inlet channel 10, the pressure of gases at high pressure makes diaphragm 5 produce elastic displacement along pressure direction, the feeler lever 422 that the top of push rod 41 has promoted to be connected with the other end of push rod 41 carries out displacement movement too, the switch of microswitch 42 is pressed and is connected on the displacement movement top of feeler lever 422, the warning device 6 being now connected with microswitch 42 by wire 45 has been received the connection signal of microswitch 42, the now normal standby of warning device 6, when flame snuffer pressure bottle causes pressure of the inside of a bottle to reduce because of reasons such as leakages, push rod 41 is under the effect of disk spring, promote diaphragm 5 and feeler lever 422 work retraction reseting movements, when force value reaches default break-make force value, feeler lever 422 is due to the reverse displacement of retraction reseting movement, finally make the connection signal of microswitch 42 disconnect, now warning device 6 loses the connection signal of microswitch 42 and starts to report to the police, hypotony in prompting flame snuffer pressure bottle, need to overhaul to guarantee that flame snuffer pressure bottle is in normal stable duty to flame snuffer pressure bottle.
Further, in order better the internal pressure of flame snuffer pressure bottle to be monitored, the lateral wall junction of connector 2 and rear cover body 3 can marking high scale value, because microswitch 42 is to be fixed in rear cover body 3 along axis direction, it is also to carry out vertically displacement that the diaphragm 5 being under pressure promotes push rod 41, therefore by the rotation of connector 2 and rear cover body 3 connecting threads, the feeler lever 422 of microswitch 42 is changed with the distance of push rod 41, for the alarm pressure value of warning device 6, adjust.Concrete example as, first connector 2 and rear cover body 3 are separated, now, push rod 41 and microswitch 42 are released states, warning device 6 and wire 45 are separated, wire 45 is connected with multimeter (not marking), then in flame snuffer pressure bottle, be filled with the nitrogen of 8MP, now rotate the lateral wall of rear cover body 3, rear cover body 3 is connected with connector 2 along hand of spiral, now turn to that multimeter receives that diaphragm 5 promotes that push rods 41 trigger enabling signal that microswitches 42 transmit and till demonstrating reading always, illustrate that the alarm pressure value of pressure monitoring device 40 is this moment at 8MP, now can be on the lateral wall junction of connector 2 and rear cover body 3 can marking the relative scale position of current force value, and tensimeter is changed to warning device 6 is connected with wire 45.Then according to said method, carry out the gas filling such as 10MP-3MP, the warning scale position that draws above-mentioned force value, and marking is in the lateral wall junction of connector 2 and rear cover body 3.Therefore only need the lateral wall that rotates rear cover body 3 targetedly the flame snuffer pressure bottle of needs monitoring to be selected to the corresponding alarming value of warning device 6, simple and convenient effective.
Claims (10)
1. a novel pressure monitoring device, it is characterized in that: comprise joint, pressure monitoring switch, connect housing and warning device, described joint is fixed on one end of described connection housing, make described joint and described connection housing form a spatial accommodation, described pressure monitoring switch is positioned at described spatial accommodation and is connected with described warning device, the air inlet through hole that described joint is axially arranged with perforation along it is for being communicated with described spatial accommodation and pressure vessel inner chamber to be monitored, described pressure monitoring switch comprises the diaphragm with the coaxial setting of described air inlet through hole, axially displaceable push rod and be fixed on the microswitch on described connection housing, described diaphragm is fixed on the inner opening that covers described air inlet through hole on the inner face of described joint with sealing, one end of described push rod is fixedly connected with described diaphragm, under the promotion of described diaphragm, the startup of the other end of described push rod triggering microswitch makes described warning device in standby, when push rod leaves cannot trigger microswitch and start time under the pulling of described diaphragm, described warning device starts to report to the police.
2. novel pressure monitoring device according to claim 1, it is characterized in that, described pressure monitoring switch also comprises annular fixed station and groups of springs, described annular fixed station is fixed on the inside of described connection housing, in described annular fixed station, be provided with the through hole suitable with described push rod, the lower end edge lateral wall of the close described diaphragm of described push rod is provided with Spring Card platform, and described groups of springs is enclosed within described push rod between described Spring Card platform and annular fixed station lower surface.
3. novel pressure monitoring device according to claim 2, it is characterized in that, described microswitch includes fixed pedestal, fixed block, microswitch body and feeler lever, described microswitch is positioned at described annular fixed station top, described fixed pedestal is fixed on the inside that connects housing, and described fixed pedestal is provided with the through hole suitable with described microswitch body vertically, described fixed block is fixed on the upper surface of described fixed pedestal and tangent with the upper shed limit of described through hole, described microswitch body inserts the through hole of described fixed pedestal and is fixedly connected with fixed block, the lower end of described microswitch body is fixed with described feeler lever, described push rod top contacts with described feeler lever through the through hole of described annular fixed station, the upper end of described microswitch body is signal output part, described signal output part is connected with described warning device by wire.
4. according to the novel pressure monitoring device one of claim 1-3 Suo Shu, it is characterized in that: described diaphragm is stainless steel, its thickness is 0.05mm.
5. according to the novel pressure monitoring device one of claim 1-3 Suo Shu, it is characterized in that: described groups of springs comprises 3-6 group saucer washer formula spring, and described in every group, the thickness of spring is 2mm-4mm.
6. according to the novel pressure monitoring device one of claim 1-3 Suo Shu, it is characterized in that, described connection housing comprises connector and rear cover body, described connector and described rear cover body are the tubular construction of both ends open, the open top end lateral wall of described connector is provided with external thread, the bottom open end madial wall of described rear cover body is provided with internal thread, in order to described connector top is fixed on to described rear cover body bottom; Described connector inside is provided with the connector through hole of mutual perforation along axis; Described connector bottom open end inwardly forms the first cavity, and its open top end inwardly forms the second cavity; Radially outwardly formation one annular boss of described nipple tip, described the first cavity and described joint annular boss are suitable, in order to described joint annular boss is nested to described the first cavity, the top of described joint is provided with Gask-O-Seal, and the described joint annular boss position corresponding with described the first cavity inner bottom surface is provided with the annular groove suitable with described Gask-O-Seal; The described connector bottom open end position corresponding with described joint annular boss is provided with fixed card platform, in order to described joint annular boss sealing is fixed in described the first cavity; Described the first cavity inner bottom surface center forms a concave station vertically; Described fixed pedestal is arranged in the open top end of described rear cover body, described fixed pedestal is that cylindrical structure and lateral wall are provided with the external thread corresponding with described rear cover body bottom open end madial wall internal thread, in order to the mode by screw-threaded engagement, is fixed in rear cover body bottom open end; Described annular fixed station is fixedly installed on the described rear cover body bottom open end madial wall position corresponding with described push rod top.
7. a kind of novel pressure monitoring device according to claim 1, it is characterized in that: the open top end madial wall of described rear cover body is corresponding with the top of described microswitch body is provided with fixed head, described fixed head is close on the top end surface of described microswitch body, described fixed head is provided with wire guide, in order to the described wire that microswitch body top is connected, derives.
8. a kind of novel pressure monitoring device according to claim 3, it is characterized in that: described rear cover body open top end inner face is cast with epoxy resin layer between described fixed head, in described epoxy resin layer, be provided with lead channels, in order to described wire is derived, described rear cover body open top end is provided with cover plate along end face, described cover plate is provided with lead channels, in order to wire is derived.
9. according to a kind of novel pressure monitoring device one of claim 1-3 or 6-8 Suo Shu, it is characterized in that: described connection housing, described joint, described push rod, described fixed pedestal or employing carbon constructional quality steel material.
10. a flame snuffer, the pressure vessel described to be monitored that comprises internal high-voltage gas, described pressure vessel to be monitored is provided with the internal thread interface being connected with described joint bottom, it is characterized in that: also comprise a kind of novel pressure monitoring device that one of claim 1-9 is described, described gases at high pressure are nitrogen, and described pressure vessel to be monitored is pressure bottle.
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| CN104019286A (en) * | 2014-06-23 | 2014-09-03 | 中北大学 | Sealing structure |
| CN107308576A (en) * | 2017-05-26 | 2017-11-03 | 新疆宏开电子系统集成有限公司 | The emergent defence of civilian accident sprays fire extinguisher |
| CN107478307A (en) * | 2017-09-20 | 2017-12-15 | 重庆远望物流有限公司 | A kind of gravity sensor |
| CN109974922A (en) * | 2017-12-14 | 2019-07-05 | 阿克韦尔股份公司 | For measuring the device of the physical parameter of fluid |
| CN110715764A (en) * | 2019-10-24 | 2020-01-21 | 中互电气(江苏)有限公司 | Sensor with strong moisture-proof capability |
| CN112229560A (en) * | 2020-10-30 | 2021-01-15 | 成都凯天电子股份有限公司 | A double margin high reliability pressure annunciator |
| CN112915451A (en) * | 2021-02-05 | 2021-06-08 | 中北大学 | Portable water mist fire extinguisher and control method |
| CN115414622A (en) * | 2021-06-01 | 2022-12-02 | 福建防护家科技有限公司 | An IoT pressure feedback device |
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| CN112915451A (en) * | 2021-02-05 | 2021-06-08 | 中北大学 | Portable water mist fire extinguisher and control method |
| CN115414622A (en) * | 2021-06-01 | 2022-12-02 | 福建防护家科技有限公司 | An IoT pressure feedback device |
| CN118329240A (en) * | 2024-06-13 | 2024-07-12 | 广州市粤佳气体有限公司 | Gas pressure low-forecast alarm monitoring device |
| CN118329240B (en) * | 2024-06-13 | 2024-08-27 | 广州市粤佳气体有限公司 | Gas pressure low-forecast alarm monitoring device |
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