CN205049286U - Explosion -proof electric contact pressure gauge - Google Patents
Explosion -proof electric contact pressure gauge Download PDFInfo
- Publication number
- CN205049286U CN205049286U CN201520695980.1U CN201520695980U CN205049286U CN 205049286 U CN205049286 U CN 205049286U CN 201520695980 U CN201520695980 U CN 201520695980U CN 205049286 U CN205049286 U CN 205049286U
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- China
- Prior art keywords
- mesochite
- explosion
- pressure gauge
- proof
- index dial
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Abstract
The utility model relates to a manometer technical field provides an explosion -proof electric contact pressure gauge very much, connect the device including shell, pressure indicating device, spring pipe pressure measurement device and electricity, wherein the shell becomes explosion proof enclosure by preceding ring cowling, transparent, mesochite and back lid fixed connection, and each connection face is the flame proof face, when using this instrument, gets into the spring pipe as measurement medium and makes the displacement of its production enlarge the back through drive mechanism, and the pointer will be instructed on the calibrated scale by pressure measurement power value, and when pressure reached the predetermined value, the electricity connect the movable contact of device and pointer to contact, puts through or open circuit. This instrument is used in the dangerous place who has explosive mixture in the environment, when the inside explosive mixture of watchcase when receiving the influence of spark or electric arc and blast, can not arouse that outside explosive mixture explodes to reach blast proof mesh ground.
Description
Technical field
The utility model relates to tensimeter technical field, specifically provides a kind of explosion-proof electro connecting pressure gauge.
Background technology
Tensimeter has polytype, not identical according to the tensimeter that the object difference that will detect adopts yet, in time having explosive substance to exist in environment, if tensimeter inside occurs that electric spark or other naked light cause internal explosion, tensimeter internal pressure can be caused to increase, pressure gauge housing is burst and causes extraneous explosion material to explode, especially for electro connecting pressure gauge, inner than being easier to occur electric spark, therefore need to invent a kind of explosion-proof electro connecting pressure gauge.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of explosion-proof electro connecting pressure gauge, reaches explosion-proof effect by explosion-proof casing in conjunction with explosion suppresion surface.
The utility model is achieved in that and provides a kind of explosion-proof electro connecting pressure gauge, comprising:
Shell, is fixedly connected into measurement space by front ring cowling, Transparent Parts and mesochite, and after mesochite, bolt connects a bonnet, and front ring cowling is threaded with mesochite, and through hole is arranged at mesochite bottom;
Pressure-indication means, comprise index dial and pointer, index dial is parallel with Transparent Parts, is fixed on mesochite;
Bourdon tube pressure tester, is arranged between index dial and mesochite, and by through the drive link concatenation pointer of index dial center through hole, the joint of bourdon tube pressure tester is connected with object to be measured through the through hole of mesochite bottom; And
Electricity connection device, is fixed on index dial, by the connection of pointer and electric connection device movable contact, disconnects carry out control circuit connection, disconnection, and the wire of electric connection device passes index dial is connected with extraneous with mesochite;
Manometric shell adopts explosion separation structure: the thickness of front ring cowling and mesochite is between 13-18mm, the thread joint face length of mesochite and front ring cowling is between 8-10mm, the number of threads is between 5-10, the recessed bond ing face length degree of mesochite lower through-hole and bourdon tube pressure tester joint is between 9.5-12mm, bilateral clearance is between 0-0.15mm, the bolting face length of described mesochite and bonnet is between 12.5-15mm, and bilateral clearance is between 0-0.15.
Further, there are aperture in Transparent Parts central authorities, and a dead man connects rotationally pull out pin through aperture, control to pull out the movable contact that electric connection device stirred by pin by dead man, thus limit lower limit and the upper limit of institute's measuring pressure.
Further, the surface of contact length of Transparent Parts central aperture and dead man is between 6-10mm, and bilateral clearance is between 0-0.15mm.
Further, the joint of bourdon tube pressure tester and the connected mode of object to be measured are for being threaded or Flange joint.
Further, Transparent Parts is implosion guard.
Compared with prior art, the utility model has the advantage of, can by this instrument hazardous area having explosive mixture in the environment, meter case adopts explosion separation structure, when the explosive mixture of watchcase inside is blasted because being subject to spark or electric arc influence, extraneous explosion potpourri can not be caused to explode, thus reach explosion-proof order ground.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is the utility model profile structural representation;
Fig. 2 is the utility model front view;
Fig. 3 is electric contact contact electric wiring schematic diagram in the utility model;
Fig. 4 is thermometer joint flange connection diagram.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only for explaining the utility model, and be not used in restriction the utility model.
In containing the environment of damp, manometric problem is used in order to solve, the utility model provides a kind of explosion-proof electro connecting pressure gauge, as Fig. 1, shown in 2, comprise shell 1, pressure-indication means 2, bourdon tube pressure tester 3 and electric connection device 4, its housing 1 is by front ring cowling 11, Transparent Parts 12 and mesochite 13 are formed by fixedly connecting, pressure-indication means 2 comprises index dial 21 and pointer 22, spring pressure tester 3 is arranged between index dial 21 and mesochite 13, electricity connection device 4 is fixed on index dial 21, when measured medium enters bourdon tube, the displacement making it produce is after gear train amplifies, tested force value indicates by pointer 22 on index dial 21, when the pressure reaches a predetermined value, the movable contact of electricity connection device 4 contacts with pointer 22, be switched on or switched off circuit, be illustrated in figure 3 the circuit diagram of this instrument, the pointer of pressure-indication means 2 connects positive pole, two contacts of electricity connection device 4 connect negative pole, two housings all have earthing pole.
The utility model shell adopts explosion separation structure, the thickness of front ring cowling 11 and mesochite 13 is between 13-18mm, the thread joint face length of mesochite 13 and front ring cowling 11 is between 8-10mm, the number of threads is between 5-10, the recessed bond ing face length degree of mesochite 13 lower through-hole and bourdon tube pressure tester 3 joint is between 9.5-12mm, bilateral clearance is between 0-0.15mm, the bolting face length of mesochite 13 and bonnet 14 is between 12.5-15mm, bilateral clearance is between 0-0.15, setting like this, when the explosive mixture of tensimeter inside is blasted because being subject to spark or electric arc influence, first because the thickness of front ring cowling 11 and mesochite 13 is thicker, can not burst because of uprushing of internal pressure, when Mars is propagated in joint face on the other hand, because joint face is explosion suppresion surface, its length, the impact of gap and roughness makes Mars temperature in communication process reduce until extinguish, the explosive mixture in external environment condition can not be made to blast, reach explosion-proof object.The too thin meeting of thickness of shell causes not having flame proof effect, the too thick tensimeter that causes of the thickness of shell is too heavy, and wastes material increase cost, and the length of explosion suppresion surface is too short does not reach flame proof effect equally, length is oversize increases the complexity of installing, and also wastes material increase cost.
Through inspection, the explosive-proof grade of this electro connecting pressure gauge is Exd II BT6Gb.
If instrument is used for measuring the pressure of fixed object, the minimax pressure that it can bear is fixing, then when assembling instrument, the movable contact of electric connection device 4 is fixed on corresponding registration position, when instrument can be used for the pressure measuring different object, as the improvement of technical scheme, in Transparent Parts 12, central authorities arrange aperture, one dead man connects rotationally pull out pin through aperture, control to pull out the movable contact that electric connection device stirred by pin by dead man, thus limit lower limit and the upper limit of institute's measuring pressure, in order to reach flame proof effect, the surface of contact length of Transparent Parts central aperture and dead man is preferably between 6-10mm, bilateral clearance is preferably between 0-0.15mm.
For different objects to be measured, instrument can have different connected modes, therefore as the improvement of technical scheme, the joint of bourdon tube pressure tester and the connected mode of object to be measured are for being threaded or Flange joint, flange preferred planar flange, the flange that is threaded, hygiene-type flange, joint shown in Fig. 1 is for being threaded, and Flange joint joint schematic diagram as shown in Figure 4.
In order to increase explosion-proof effect, as the improvement of technical scheme, Transparent Parts 12 selects implosion guard.
Claims (5)
1. an explosion-proof electro connecting pressure gauge, is characterized in that, comprising:
Shell, is fixedly connected into measurement space by front ring cowling, Transparent Parts and mesochite, and after mesochite, bolt connects a bonnet, and described front ring cowling is threaded with described mesochite, and through hole is arranged at mesochite bottom;
Pressure-indication means, comprises index dial and pointer, and described index dial is parallel with described Transparent Parts, is fixed on described mesochite;
Bourdon tube pressure tester, is arranged between described index dial and described mesochite, and by connecting described pointer through the drive link of described index dial center through hole, the joint of described bourdon tube pressure tester is connected with object to be measured through the through hole of described mesochite bottom; And
Electricity connection device, is fixed on described index dial, by the connection of described pointer and described electric connection device movable contact, disconnects carry out control circuit connection, disconnection, and the wire of described electric connection device passes described index dial is connected with extraneous with mesochite;
Described shell adopts explosion separation structure: the thickness of described front ring cowling, mesochite and bonnet is between 13-18mm, the thread joint face length of described mesochite and described front ring cowling is between 8-10mm, the number of threads is between 5-10, the recessed bond ing face length degree of described mesochite lower through-hole and described bourdon tube pressure tester joint is between 9.5-12mm, bilateral clearance is between 0-0.15mm, the bolting face length of described mesochite and bonnet is between 12.5-15mm, and bilateral clearance is between 0-0.15.
2. according to the explosion-proof electro connecting pressure gauge of one according to claim 1, it is characterized in that, there are aperture in described Transparent Parts central authorities, one dead man connects rotationally pull out pin through described aperture, control to pull out the movable contact that described electric connection device stirred by pin by dead man, thus limit lower limit and the upper limit of institute's measuring pressure.
3. according to the explosion-proof electro connecting pressure gauge of one according to claim 2, it is characterized in that, the surface of contact length of described Transparent Parts central aperture and dead man is between 6-10mm, and bilateral clearance is between 0-0.15mm.
4. according to the explosion-proof electro connecting pressure gauge of one according to claim 1, it is characterized in that, the joint of described bourdon tube pressure tester and the connected mode of object to be measured are for being threaded or Flange joint.
5. according to the explosion-proof electro connecting pressure gauge of one according to claim 1, it is characterized in that, described Transparent Parts is implosion guard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520695980.1U CN205049286U (en) | 2015-09-09 | 2015-09-09 | Explosion -proof electric contact pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520695980.1U CN205049286U (en) | 2015-09-09 | 2015-09-09 | Explosion -proof electric contact pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205049286U true CN205049286U (en) | 2016-02-24 |
Family
ID=55342856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520695980.1U Expired - Fee Related CN205049286U (en) | 2015-09-09 | 2015-09-09 | Explosion -proof electric contact pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205049286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871660A (en) * | 2018-07-09 | 2018-11-23 | 山东福瑞德测控系统有限公司 | Monocrystalline silicon differential pressure transmitter |
| CN109060235A (en) * | 2018-08-23 | 2018-12-21 | 芜湖凯兴汽车电子有限公司 | A kind of fire-proof type pressure gauge with defencive function |
-
2015
- 2015-09-09 CN CN201520695980.1U patent/CN205049286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871660A (en) * | 2018-07-09 | 2018-11-23 | 山东福瑞德测控系统有限公司 | Monocrystalline silicon differential pressure transmitter |
| CN109060235A (en) * | 2018-08-23 | 2018-12-21 | 芜湖凯兴汽车电子有限公司 | A kind of fire-proof type pressure gauge with defencive function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20170909 |