CN105067185A - Anti-compression pressure gauge short circuit - Google Patents
Anti-compression pressure gauge short circuit Download PDFInfo
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- CN105067185A CN105067185A CN201510499553.0A CN201510499553A CN105067185A CN 105067185 A CN105067185 A CN 105067185A CN 201510499553 A CN201510499553 A CN 201510499553A CN 105067185 A CN105067185 A CN 105067185A
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- short circuit
- piston
- tensimeter
- bypass chamber
- shell
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Abstract
The invention relates to a pressure gauge member and discloses an anti-compression pressure gauge short circuit. The anti-compression pressure gauge short circuit comprises a housing having a piston chamber; the other end of the housing is provided with a short circuit outlet; the piston chamber is internally provided with a piston; the piston chamber is divided into a pressure measurement chamber and a medium chamber by the piston; the medium chamber is provided with a bypass chamber; the housing of the bypass chamber is connected to a switch rod in a sliding manner; the switch rod is fixedly connected to the piston; the pressure measurement chamber is provided with a position limitation projected block and is filled with anti-freezing hydraulic oil; and the distance between the position limitation projected block and the top end of the bypass chamber is greater than the sum of the distance between the position limitation projected block and the switch rod, or the distance between the position limitation projected block and the top end of the bypass chamber is smaller than the sum of the distance between the position limitation projected block and the switch rod. The invention solves the problem that, when the pressure of the detected medium is excessive, the pressure gauge is easy to damage. As a result, the invention provides an anti-compression pressure gauge short circuit, by using which, when the pressure is excessive, the pressure gauge is not damaged.
Description
Technical field
The present invention relates to a kind of manometric parts, be specifically related to a kind of resistance to compression tensimeter short circuit.
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 resistance to compression tensimeter short circuit, and the upper end of the housing of resistance to compression tensimeter short circuit 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 pointer is moved towards maximum range constantly, until hand motion is to maximum range place, anti freezing solution force feed is to prevent the moisture in measured medium or measured medium from entering in tensimeter, cause pressure gauge reading to be forbidden or damage, and anti freezing solution force feed can not be freezed at a lower temperature, also there is certain lubrication, water inlet in bourdon tube can be prevented, when avoiding water to expand, infringement is produced to bourdon tube, tensimeter can be protected inner, and make it better run, usually can using anti freezing solution force feed as oil sealing, in the bourdon tube being filled in tensimeter inside or be filled in tensimeter short circuit, 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 resistance to compression tensimeter short circuit that tensimeter can not be made to damage.
Technical scheme of the present invention is: resistance to compression tensimeter short circuit, comprise the shell with plunger shaft, one end of described shell has short circuit import, the other end of shell has short circuit outlet, specially be furnished with piston in plunger shaft, plunger shaft is divided into pressure measuring cavity, dielectric cavity by piston, and described dielectric cavity has bypass chamber, the shell wall of bypass chamber slidably connects switch lever, and switch lever is fixedly connected with piston; Described pressure measuring cavity is provided with spacing block set, anti freezing solution force feed is full of in pressure measuring cavity, distance between spacing block set and bypass chamber top is greater than the distance sum between spacing block set and switch lever bottom, or the distance between spacing block set and bypass chamber bottom is less than the distance sum between spacing block set and switch lever bottom.
Beneficial effect of the present invention is: shell is the skeleton of resistance to compression tensimeter short circuit, 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 internal 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 resistance to compression tensimeter short circuit.
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 resistance to compression tensimeter short circuit, measured medium enters between piston and short circuit import, measured medium presses piston to the direction motion near short circuit outlet, piston presses anti freezing solution force feed towards short circuit exit movement, anti freezing solution force feed is extruded from cavity by piston, 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 driven plunger move towards the direction of short circuit import always, piston moves with the direction of switch lever towards short circuit import, when tested pressure increase is to a certain numerical value, and the spacing block set place that piston will move in cavity, now gauge hand is in close to range maximum, because the distance between spacing block set and bypass chamber top is greater than the distance sum between spacing block set and switch lever bottom, or the distance between spacing block set and bypass chamber bottom is less than the distance sum between spacing block set and switch lever bottom, so no matter the inlet openings of bypass chamber towards piston side, still vertically in the side of piston direction, now the import of bypass chamber can be opened by switch lever, the excessive measured medium of pressure can flow in the external world or measured medium pipeline by bypass chamber, reach the object of pressure release, ensure that piston can not continue motion, 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, tensimeter is finally caused to damage, the setting of spacing block set, piston can be made to be butted on spacing block set mutually, thus to avoid piston to continue to press anti freezing solution force feed towards tensimeter internal motion further, avoid and cause pointer to continue motion, pointer can not be caused to exceed maximum range or lose, ensure that tensimeter can not damage.
Further: bypass chamber is communicated on medium pipeline away from one end of shell.When measured medium pressure is excessive, measured medium flow in medium pipeline again by bypass chamber, ensure that piston is with the constant pressure in upper plenum, and then ensure that tensimeter can not damage.
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: between piston and shell wall and between switch lever and shell wall, to be equipped with O-ring seal.The setting of O-ring seal, can make measured medium can not enter in cavity, ensure that the purity of the anti freezing solution force feed in cavity; Also can make measured medium can not be excessive in bypass chamber from switch lever, ensure that the pressure of measured medium in short circuit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of resistance to compression tensimeter short circuit embodiment one of the present invention;
Fig. 2 is the schematic diagram of resistance to compression tensimeter short circuit embodiment two of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: shell 1, piston 2, vaseline 3, spacing block set 4, short circuit outlet 5, O-ring seal 6, connecting link 7, switch lever 8, bypass chamber 9, short circuit import 10, internal thread 11, external thread 12.
Embodiment one is substantially as shown in Figure 1: resistance to compression tensimeter short circuit, comprise the shell 1 with plunger shaft, the lower end of described shell 1 has short circuit import 10, shell 1 wall of short circuit import 10 is provided with the import external thread 12 be connected with the valve on measured medium pipeline, the upper end of shell 1 has short circuit outlet 5, shell 1 wall of short circuit outlet 5 is provided with the outlet internal thread 11 be connected with tensimeter, specially piston is furnished with in plunger shaft, plunger shaft is divided into pressure measuring cavity by piston 2, dielectric cavity, bypass chamber 9 is had on the right side of dielectric cavity in shell 1, the outlet of bypass chamber 9 right-hand member is on medium pipeline, shell 1 wall of bypass chamber 9 slidably connects switch lever 8, switch lever 8 upper end is welded with connecting link 7, the welding of connecting link 7 upper end on the piston 2, spacing block set 4 is provided with in the cavity of the top of shell 1 inner carrier 2, on vertical direction, distance between spacing block set 4 and bypass chamber top is greater than piston 2, the size sum of switch lever 8 and connecting link 7 three, vaseline 3 is full of in cavity, O-ring seal 6 is equipped with between piston 2 and shell 1 wall and between switch lever 8 and shell 1 wall.
First short circuit outlet 5 is passed through interface external thread 12 to be connected with tensimeter, again short circuit import 10 is connected on valve by import internal thread 11, open valve, the measured medium with certain pressure enters into resistance to compression tensimeter short circuit, measured medium enters between piston 2 and short circuit import 10, measured medium presses piston 2 and moves upward, piston 2 presses vaseline 3 and moves upward, vaseline 3 is extruded from cavity by piston 2, 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 driven plunger 2 move upward always; Piston 2 moves upward with switch lever 8, and when tested pressure increase is to a certain numerical value, piston 2 will move to spacing block set 4 place, and now gauge hand is in close to range maximum; Now the import of bypass chamber 9 can be opened by switch lever 8, the excessive measured medium of pressure can flow in measured medium pipeline by bypass chamber 9, reach the object of pressure release, ensure that piston 2 can not continue motion, thus ensure that tensimeter can not exceed greatest measurement.
The setting of spacing block set 4, can make piston 2 be butted on mutually on spacing block set 4, thus avoids piston 2 to continue to press vaseline 3 towards tensimeter internal motion further, avoids and causes pointer to continue motion.
The setting of O-ring seal 6, can make measured medium can not enter in cavity, ensure that the purity of the vaseline 3 in cavity; Also can make measured medium can not be excessive in bypass chamber 9 from switch lever 8, ensure that the pressure of measured medium in short circuit.
Embodiment two is substantially as shown in Figure 2: be with the difference of embodiment one, and on vertical direction, the distance between spacing block set 4 and bypass chamber bottom is greater than the size sum of piston 2, switch lever 8 and connecting link 7 three.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. resistance to compression tensimeter short circuit, comprise the shell with plunger shaft, one end of described shell has short circuit import, the other end of shell has short circuit outlet, specially be furnished with piston in plunger shaft, plunger shaft is divided into pressure measuring cavity, dielectric cavity by piston, it is characterized in that: described dielectric cavity has bypass chamber, the shell wall of bypass chamber slidably connects switch lever, and switch lever is fixedly connected with piston; Described pressure measuring cavity is provided with spacing block set, anti freezing solution force feed is full of in pressure measuring cavity, distance between spacing block set and bypass chamber top is greater than the distance sum between spacing block set and switch lever bottom, or the distance between spacing block set and bypass chamber bottom is less than the distance sum between spacing block set and switch lever bottom.
2. resistance to compression tensimeter short circuit according to claim 1, is characterized in that: described bypass chamber is communicated on medium pipeline away from one end of shell.
3. resistance to compression tensimeter short circuit according to claim 2, is characterized in that: described anti freezing solution force feed is vaseline.
4. resistance to compression tensimeter short circuit according to claim 3, is characterized in that: be equipped with O-ring seal between described piston and shell wall and between switch lever and shell wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499553.0A CN105067185A (en) | 2015-08-15 | 2015-08-15 | Anti-compression pressure gauge short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499553.0A CN105067185A (en) | 2015-08-15 | 2015-08-15 | Anti-compression pressure gauge short circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105067185A true CN105067185A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510499553.0A Pending CN105067185A (en) | 2015-08-15 | 2015-08-15 | Anti-compression pressure gauge short circuit |
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| CN (1) | CN105067185A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151951A (en) * | 2016-12-05 | 2018-06-12 | 上海梅山钢铁股份有限公司 | The anti-high pressure impact of transducer diaphragm and defroster |
| CN111189575A (en) * | 2020-01-14 | 2020-05-22 | 秦亚州 | Limit amplification disassembly-free pressure gauge capable of calibrating zero setting |
| CN114046933A (en) * | 2022-01-12 | 2022-02-15 | 江苏华质检测技术有限公司 | Pressure calibrator for thermal chamber |
| CN114593866A (en) * | 2022-03-08 | 2022-06-07 | 贾秀梅 | Oil field is with preventing pressure overload's dynamic adjustment formula oil pressure seat |
-
2015
- 2015-08-15 CN CN201510499553.0A patent/CN105067185A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151951A (en) * | 2016-12-05 | 2018-06-12 | 上海梅山钢铁股份有限公司 | The anti-high pressure impact of transducer diaphragm and defroster |
| CN111189575A (en) * | 2020-01-14 | 2020-05-22 | 秦亚州 | Limit amplification disassembly-free pressure gauge capable of calibrating zero setting |
| CN114046933A (en) * | 2022-01-12 | 2022-02-15 | 江苏华质检测技术有限公司 | Pressure calibrator for thermal chamber |
| CN114593866A (en) * | 2022-03-08 | 2022-06-07 | 贾秀梅 | Oil field is with preventing pressure overload's dynamic adjustment formula oil pressure seat |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151118 |
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| WD01 | Invention patent application deemed withdrawn after publication |