CN203037400U - Push rod type pressure transducer - Google Patents
Push rod type pressure transducer Download PDFInfo
- Publication number
- CN203037400U CN203037400U CN 201320003339 CN201320003339U CN203037400U CN 203037400 U CN203037400 U CN 203037400U CN 201320003339 CN201320003339 CN 201320003339 CN 201320003339 U CN201320003339 U CN 201320003339U CN 203037400 U CN203037400 U CN 203037400U
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- CN
- China
- Prior art keywords
- push rod
- unit
- pressure
- rod type
- type pressure
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Abstract
The utility model discloses a push rod type pressure transducer, which comprises a measuring gauge head, a pressure sensing unit with a sensing end, a push rod and a pressure transmission unit with a transmission end, wherein one end of the push rod passes through and is arranged inside the pressure sensing unit, and is connected with the sensing end; the other end of the push rod passes through and is arranged inside the pressure transmission unit, and is contacted with the transmission end; and the transmission end is electrically connected with the measuring gauge head. The push rod type pressure transducer is a melt pressure transducer which can be applied to the middle voltage and high temperature environment, and has the advantages that the measurement precision is comparatively high, and absolute measurement strengths in the middle voltage and high temperature environment can be presented.
Description
Technical field
The utility model relates to a kind of pressure unit, particularly relates to a kind of post rod type pressure unit.
Background technology
The post rod type pressure unit application on market at present is less, typical type is that screw thread is installed, the pressure limit of measuring is generally more than 10MPa, the installation form of the specification of screw thread more than G3/8 is more, and post rod type pressure unit manufacturer at home is very few, dependence on import comparatively is typically Japanese RKC type pressure unit mostly.Yet under the operating mode of hot environment low-pressure, the post rod type pressure unit that screw thread is installed has so just lost absolute predominance in measurement accuracy owing to lost precision (full accuracy is 1%F.S usually, and F.S represents gamut).
Pressure survey for middle pressure, high temperature (more than 350 ℃) under the part operating mode, existing melt is high-temperature silicon oil and mercury with the filled media in the transmitter substantially, and high-temperature silicon oil can not satisfy the measurement demand in time more than 200 ℃, the temperature of transmitter is floated rapid rising, and silicone oil presents the partial gasification phenomenon.The heatproof effect of mercury is relatively good, but is namely losing its advantage more than 350 ℃, and not only temperature is floated rapid rising, and at high temperature, mercury also has the partial gasification phenomenon.Cause transmitter to damage if Yin Wendu is too high and cause mercury to leak, can produce very big harm to environment and operator.
The utility model content
The technical problems to be solved in the utility model be for overcome pressure unit in the prior art be not suitable in the tonometric defective of super pressure-high temperature, a kind of post rod type pressure unit is provided.
The utility model solves above-mentioned technical matters by following technical proposals: a kind of post rod type pressure unit, comprise that one measures gauge outfit, its characteristics are, described pressure unit comprises that one has the pressure sensitive unit of an induction end, the pressure transmission unit that a push rod and has a transmission ends, one end of described push rod is arranged in the described pressure sensitive unit and with described induction end and is connected, the other end of described push rod is arranged in the described pressure transmission unit and with described transmission ends and contacts, and described transmission ends is electrically connected with described measurement gauge outfit.
Preferably, described pressure sensitive unit comprises a probe and a probe loam cake, and the external stability of described probe has a flange, and described induction end is fixed on an end of described probe, and the other end of described probe and described probe loam cake are fixed.
Preferably, described induction end is a diaphragm.
Preferably, a boss is set on the described diaphragm, an end of described push rod arranges a bayonet socket, described boss and described bayonet socket clamping.
Preferably, described pressure transmission unit comprises a crossover sub, a shell and a housing joint, described crossover sub is set in the described push rod outside and affixed with an end of described shell, and described housing joint is fixed in the other end of described shell and affixed with described measurement gauge outfit.
Preferably, described transmission ends comprises that a gland nut, an elastic body and are fixed in the circuit compensation plate on the described housing joint, described elastic body is embedded in the described gland nut, the other end of described push rod contacts with described elastic body by a steel ball, and described elastic body is electrically connected with described circuit compensation plate.
Preferably, between the other end of described push rod and the described elastic body successively pad be provided with a pad and an O type circle.Described pad can form the plane with described elastic body and described gland nut, thereby strengthens contact area.Described O type circle can carry out soft readjustment, regulates mismachining tolerance with this.
Preferably, described pad is a teflon gasket.
Preferably, be connected by a connecting link between described pressure sensitive unit and the described pressure transmission unit, make described top stem casing be located in the described connecting link.
In the utility model, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge namely gets each preferred embodiment of the utility model.
Positive progressive effect of the present utility model is: the utility model post rod type pressure unit can be adapted to a melt pressure transmitter under middle pressure, the hot environment.Its measuring accuracy is higher relatively, can embody the absolute measurement advantage under middle pressure, hot environment.
Description of drawings
Fig. 1 is the structural representation of the utility model post rod type pressure unit.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
As shown in Figure 1, the utility model post rod type pressure unit comprises a pressure sensitive unit, a pressure transmission unit, a push rod 1 and a measurement gauge outfit 5.Wherein, shown in the pressure sensitive unit have an induction end, shown in the pressure transmission unit have a transmission ends, one end of push rod 1 is arranged in the described pressure sensitive unit and with described induction end and is connected, the other end of push rod 1 is arranged in the described pressure transmission unit and with described transmission ends and contacts, and described transmission ends is electrically connected with measurement gauge outfit 5.Preferably, described pressure sensitive unit comprises a probe 2 and one probe loam cake 22, and the external stability of probe 2 has a flange 21, and the size of flange 21 can be configured according to the demand on the erecting equipment especially.Described induction end is fixed on a probe end of 2, and 2 the other end of popping one's head in is fixing with probe loam cake 22.Further, described induction end is a diaphragm 23.Especially, a boss 231 is set on the diaphragm 23, an end of push rod 1 arranges a bayonet socket, boss 231 and described bayonet socket clamping.In addition, when not using described post rod type pressure unit, in order to protect described induction end, the outside of described induction end can also be covered with a tin hat (not shown).
Preferably, described pressure transmission unit comprises a crossover sub 31, a shell 3 and a housing joint 32, and crossover sub 31 is set in push rod 1 outside and affixed with an end of shell 3, and housing joint 32 is fixed in the other end of shell 3 and with to measure gauge outfit 5 affixed.
Further, described transmission ends comprises a gland nut 33, an elastic body 35 and a circuit compensation plate 38.Wherein, elastic body 35 is embedded in the gland nut 33, and the other end of push rod 1 contacts with elastic body 35 by a steel ball 34, and elastic body 35 is electrically connected with circuit compensation plate 38.Circuit replenishes plate 38 and is fixed on the housing joint 32 by Cross Recess Head Screw 381.In addition, pad is provided with a pad 36 and an O type circle 37 successively between the other end of push rod 1 and elastic body 35, and pad 36 is preferably a teflon gasket.Pad 36 can form the plane with elastic body 35 and gland nut 33, thereby strengthens contact area.O type circle 37 can carry out soft readjustment, regulates mismachining tolerance with this.
Preferably, between described pressure sensitive unit and described pressure transmission unit, be connected by a connecting link 4, make push rod 1 be sheathed in the connecting link 4.
In described post rod type transmitter, described push rod 1 holds out against mutually with described pressure sensitive unit and described pressure transmission unit.Particularly, diaphragm 32, push rod 1, steel ball 34, pad 36, O type circle 37, elastic body 35 and gland nut 33 hold out against successively mutually.
According to said structure, the use principle of described post rod type pressure unit is: in when test, will pop one's head in and 2 stretch in the determinand, and by the diaphragm 23 reception pressure of described pressure unit, be delivered to steel ball 34 by push rod 1 more earlier.Herein, the effect of steel ball 34 is in order to compensate push rod 1 transmission gap when mounted, to transfer the pressure to elastic body 35 by steel ball 34, making elastic body 35 produce micro-deformation.Strain ga(u)ge on the elastic body 35 just produces output millivolt output signal then, transfers signals to circuit compensation plate 38 by enamel-cover lead 39 and compensates, and passes the signal along to the circuit of measuring in the gauge outfit 5 again, converts to become the number of delivering letters output.Measuring gauge outfit 5 can be on-the-spot display type or not be with demonstration.
Though more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.
Claims (9)
1. post rod type pressure unit, comprise that one measures gauge outfit, it is characterized in that, described pressure unit comprises that one has the pressure sensitive unit of an induction end, the pressure transmission unit that a push rod and has a transmission ends, one end of described push rod is arranged in the described pressure sensitive unit and with described induction end and is connected, the other end of described push rod is arranged in the described pressure transmission unit and with described transmission ends and contacts, and described transmission ends is electrically connected with described measurement gauge outfit.
2. post rod type pressure unit as claimed in claim 1, it is characterized in that, described pressure sensitive unit comprises a probe and a probe loam cake, the external stability of described probe has a flange, described induction end is fixed on an end of described probe, and the other end of described probe and described probe loam cake are fixed.
3. post rod type pressure unit as claimed in claim 2 is characterized in that, described induction end is a diaphragm.
4. post rod type pressure unit as claimed in claim 3 is characterized in that, a boss is set on the described diaphragm, and an end of described push rod arranges a bayonet socket, described boss and described bayonet socket clamping.
5. post rod type pressure unit as claimed in claim 1, it is characterized in that, described pressure transmission unit comprises a crossover sub, a shell and a housing joint, described crossover sub is set in the described push rod outside and affixed with an end of described shell, and described housing joint is fixed in the other end of described shell and affixed with described measurement gauge outfit.
6. post rod type pressure unit as claimed in claim 5, it is characterized in that, described transmission ends comprises that a gland nut, an elastic body and are fixed in the circuit compensation plate on the described housing joint, described elastic body is embedded in the described gland nut, the other end of described push rod contacts with described elastic body by a steel ball, and described elastic body is electrically connected with described circuit compensation plate.
7. post rod type pressure unit as claimed in claim 6 is characterized in that, fills up successively between the other end of described push rod and the described elastic body and is provided with a pad and an O type circle.
8. post rod type pressure unit as claimed in claim 7 is characterized in that, described pad is a teflon gasket.
9. as each described post rod type pressure unit of claim 1-8, it is characterized in that, be connected by a connecting link between described pressure sensitive unit and the described pressure transmission unit, make described top stem casing be located in the described connecting link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003339 CN203037400U (en) | 2013-01-05 | 2013-01-05 | Push rod type pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003339 CN203037400U (en) | 2013-01-05 | 2013-01-05 | Push rod type pressure transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037400U true CN203037400U (en) | 2013-07-03 |
Family
ID=48689511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320003339 Expired - Fee Related CN203037400U (en) | 2013-01-05 | 2013-01-05 | Push rod type pressure transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203037400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913265A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Push-rod-type pressure transmitter |
-
2013
- 2013-01-05 CN CN 201320003339 patent/CN203037400U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913265A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Push-rod-type pressure transmitter |
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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: 20130703 Termination date: 20220105 |