CN105043653A - Anti-freezing pressure gauge short casing joint - Google Patents
Anti-freezing pressure gauge short casing joint Download PDFInfo
- Publication number
- CN105043653A CN105043653A CN201510499547.5A CN201510499547A CN105043653A CN 105043653 A CN105043653 A CN 105043653A CN 201510499547 A CN201510499547 A CN 201510499547A CN 105043653 A CN105043653 A CN 105043653A
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- shell
- cavity
- short circuit
- driving stem
- casing joint
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Abstract
The invention relates to a component of a pressure gauge and discloses an anti-freezing pressure gauge short casing joint. The anti-freezing pressure gauge short casing joint comprises a shell; a short casing joint inlet is formed at one end of the shell; a short casing joint outlet is formed at the other end of the shell; a driving rod is arranged in the shell; one end of the driving rod, which is far away from the short casing joint inlet, and the shell form a first hollow cavity; a through hole communicated with the short casing joint inlet and the first hollow cavity is formed in the driving rod; one end of the driving rod, which is adjacent to the short casing joint inlet, and the shell form a second hollow cavity; the driving rod in the first hollow cavity and the second hollow cavity are in slide connection with the shell; the second hollow cavity is communicated with the short casing joint outlet; and the second hollow cavity and the short casing joint outlet are filled with anti-freezing hydraulic oil. With the anti-freezing pressure gauge short casing joint of the invention adopted, the problem of damage to the pressure gauge when the pressure of a measured medium is excessively large can be solved, and the pressure gauge will not be damaged when pressure is excessively large.
Description
Technical field
The present invention relates to a kind of manometric parts, be specifically related to a kind of freeze-proof pressure gage jointer.
Background technology
Tensimeter short circuit refers to that the connection between tensimeter and measured medium pipeline compensates, in order to be communicated with the connector of tensimeter inside and pipe interior.
The Chinese patent patent No. is CN201420698953.5, discloses a kind of freeze-proof pressure gage jointer, and the upper end of the housing of freeze-proof pressure gage jointer is provided with the internal thread be connected with tensimeter gauge outfit, and the lower end of housing is provided with the external thread be connected with pipeline valve; The cavity of housing is built-in with piston, piston side wall has two annular grooves be parallel to each other, and is all fixed with sealing rubber ring in two annular grooves; The screw internal fixtion of housing upper end has gasket seal.This kind of tensimeter, if the pressure durations of measured medium becomes large, piston can upwards be walked always, anti freezing solution force feed can apply pressure to tensimeter inside, and make pointer constantly towards maximum range motion, until hand motion is to maximum range place, when pressure is excessive, pointer exceedes maximum range or loses, and finally causes tensimeter to damage.
Summary of the invention
The object of the present invention is to provide a kind of when pressure is excessive, the freeze-proof pressure gage jointer that tensimeter damages can not be made.
Technical scheme of the present invention is: freeze-proof pressure gage jointer, comprise shell, one end of described shell has short circuit import, the other end of shell has short circuit outlet, driving stem is provided with in shell, driving stem forms the first cavity away from one end of short circuit import and shell, driving stem has the through hole being communicated with short circuit import and the first cavity, driving stem forms the second cavity near one end of short circuit import and shell, driving stem in first cavity and the second cavity and shell are slidably connected, second cavity exports with short circuit and communicates, anti freezing solution force feed is full of in second cavity and short circuit outlet.
Beneficial effect of the present invention is: shell is the skeleton of freeze-proof pressure gage jointer, the shell wall of short circuit import is provided with the external thread be connected with the valve on measured medium pipeline, the shell wall of short circuit outlet is provided with the external thread be connected with tensimeter, threaded engagement is that one simply removably connects, it is easy to connect stable, for the replacing summary more of freeze-proof pressure gage jointer.
First short circuit outlet is connected with tensimeter, again short circuit import is connected on valve, open valve, the measured medium with certain pressure enters into freeze-proof pressure gage jointer, measured medium is by the through hole of driving stem, enter in the first cavity, because driving stem and shell are slidably connected, therefore measured medium presses driving stem and moves near the direction of short circuit import, driving stem can press anti freezing solution force feed in the second cavity towards short circuit exit movement, anti freezing solution force feed is extruded by driving stem, and enter in tensimeter, by the gear train in tensimeter, and then complete the measurement of pressure, whole process measured medium directly can not contact with tensimeter inside, can ensure that tensimeter inside contacts with anti freezing solution force feed all the time, reach antifreeze object.
When the pressure durations of measured medium increases, measured medium can drive driving stem to move towards the direction of short circuit import always; When tested pressure increase is to a certain numerical value, the shell wall of driving stem in one end of short circuit import and the second cavity offsets, and now gauge hand is in range maximum; When pressure increase is to time excessive, to be butted on the shell wall in the second cavity mutually near one end of short circuit import due to driving stem, driving stem can not continue motion because the pressure of fluid to be measured is excessive, thus anti freezing solution force feed can be avoided to continue motion, and then control the motion of manometric pointer, prevent tensimeter because pressure is excessive, and cause pointer exceed maximum range or lose, finally cause tensimeter to damage.
Further: between the driving stem in the first cavity and the second cavity and shell, to be provided with O-ring seal.The setting of O-ring seal, can make measured medium can not be excessive in the first cavity, ensure that the pressure in the first cavity; Also measured medium can be made can not to enter in the second cavity from driving stem near one end of short circuit import, thus make measured medium not with anti freezing solution force feed medium, ensure that the purity of anti freezing solution force feed; Also can ensure that anti freezing solution force feed can not be excessive in the second cavity.
Further: anti freezing solution force feed is vaseline.Vaseline is a kind of mineral wax, and it can not be absorbed by the skin, and can not injure skin, one diaphragm can be formed in skin surface, the moisture of skin is not easily evaporated lost, and it be extremely water insoluble, can be attached on skin for a long time, therefore there is good moistening effect; Because when carrying out the handling of anti freezing solution force feed to short circuit or leaking in short circuit in anti freezing solution force feed, anti freezing solution force feed easily contacts skin, so anti freezing solution force feed is arranged to vaseline, the skin of operating personnel can not be hurt, ensure that safety.
Further: driving stem is fixedly connected with two depression bars symmetrical centered by through hole near one end of short circuit import, the second cavity is formed near one end of short circuit import and shell by two depression bars.The driving stem of this shape, can make driving stem be easy to motion, can make driving stem directly by measured medium pressure, pass to anti freezing solution force feed, ensure that the effect of driving stem as intermediate transmission body, easily make anti freezing solution force feed enter into tensimeter inside.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of freeze-proof pressure gage jointer embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: short circuit import 1, import external thread 2, second cavity 3, shell 4, driving stem 5, O-ring seal 6, go out interface external thread 7, short circuit outlet 8, vaseline 9, first cavity 10, through hole 11, depression bar 12.
Embodiment is substantially as shown in Figure 1: freeze-proof pressure gage jointer, freeze-proof pressure gage jointer, comprise shell 4, the lower end of described shell 4 has short circuit import 1, shell 4 wall of short circuit import 1 is provided with the import external thread 2 be connected with the valve on measured medium pipeline, the upper end of shell 4 has short circuit outlet 8, short circuit outlet 8 shell 4 wall be provided be connected with tensimeter go out interface external thread 7, driving stem 5 is provided with in shell 4, driving stem 5 upper end and shell 4 form the first cavity 10, driving stem 5 has the through hole 11 being communicated with short circuit import 1 and the first cavity 10, driving stem 5 lower end is provided with two depression bars 12 symmetrical centered by through hole 11, two depression bars 12 and driving stem 5 one-body molded, two depression bar 12 lower ends and shell 4 form two the second symmetrical cavitys 3, driving stem 5 in first cavity 10 is slidably connected with shell 4, O-ring seal 6 is provided with between driving stem 5 in first cavity 10 and shell 4, two depression bars 12 in two the second cavitys 3 are all slidably connected with shell 4, two depression bars 12 second cavity 3 in two the second cavitys 3 all and between shell 4 is provided with O-ring seal 6, short circuit outlet 8 communicates, vaseline 9 is full of in second cavity 3 and short circuit outlet 8.
First short circuit outlet 8 is passed through interface external thread 7 to be connected with tensimeter, again short circuit import 1 is connected on valve by import external thread 2, open valve, the measured medium with certain pressure enters into freeze-proof pressure gage jointer, measured medium is by the through hole 11 of driving stem 5, enter in the first cavity 10, because driving stem 5 and shell 4 are slidably connected, therefore measured medium presses driving stem 5 and moves downward, driving stem 5 drives two depression bars 12 being located at and driving lower end downwards relative to the shell 4 wall slip in the second cavity 3, the setting of the first cavity 10 inner seal ring 6, can ensure that measured medium can not be excessive in the first cavity 10, two depression bar 12 vaseline 9 pressed in the second cavity 3 export 8 towards short circuit and move, the setting of the second cavity 3 inner seal ring 6, can ensure that vaseline 9 can not be excessive in the second cavity 3, vaseline 9 is extruded by depression bar 12, and enter in tensimeter, by the gear train in tensimeter, and then complete the measurement of pressure.
When the pressure durations of measured medium increases, measured medium can drive driving stem 5 to move downward always; When tested pressure increase is to a certain numerical value, shell 4 wall in depression bar 12 lower end and the second cavity 3 offsets, and now gauge hand is in range maximum; When pressure increase is to time excessive, because depression bar 12 lower end and shell 4 wall in the second cavity 3 have propped up mutually, driving stem 5 can not continue motion because the pressure of fluid to be measured is excessive, thus ensure that tensimeter can not exceed greatest measurement.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in instructions etc. record the content that may be used for explaining claim.
Claims (4)
1. freeze-proof pressure gage jointer, comprise shell, one end of described shell has short circuit import, the other end of shell has short circuit outlet, it is characterized in that: in shell, be provided with driving stem, driving stem forms the first cavity away from one end of short circuit import and shell, driving stem has the through hole being communicated with short circuit import and the first cavity, driving stem forms the second cavity near one end of short circuit import and shell, driving stem in first cavity and the second cavity and shell are slidably connected, second cavity exports with short circuit and communicates, and is full of anti freezing solution force feed in the second cavity and short circuit outlet.
2. freeze-proof pressure gage jointer according to claim 1, is characterized in that: be provided with O-ring seal between the driving stem in described first cavity and the first cavity and the second cavity and shell.
3. freeze-proof pressure gage jointer according to claim 2, is characterized in that: described anti freezing solution force feed is vaseline.
4. freeze-proof pressure gage jointer according to claim 3, it is characterized in that: described driving stem is fixedly connected with two depression bars symmetrical centered by through hole near one end of short circuit import, the second cavity is formed near one end of short circuit import and shell by two depression bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499547.5A CN105043653A (en) | 2015-08-15 | 2015-08-15 | Anti-freezing pressure gauge short casing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499547.5A CN105043653A (en) | 2015-08-15 | 2015-08-15 | Anti-freezing pressure gauge short casing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105043653A true CN105043653A (en) | 2015-11-11 |
Family
ID=54450372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510499547.5A Pending CN105043653A (en) | 2015-08-15 | 2015-08-15 | Anti-freezing pressure gauge short casing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105043653A (en) |
-
2015
- 2015-08-15 CN CN201510499547.5A patent/CN105043653A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151111 |