CN203587271U - Diaphragm-type middle differential pressure gauge - Google Patents
Diaphragm-type middle differential pressure gauge Download PDFInfo
- Publication number
- CN203587271U CN203587271U CN201320686126.XU CN201320686126U CN203587271U CN 203587271 U CN203587271 U CN 203587271U CN 201320686126 U CN201320686126 U CN 201320686126U CN 203587271 U CN203587271 U CN 203587271U
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- diaphragm
- differential pressure
- pressure gauge
- gauge
- pressure
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Abstract
The utility model discloses a diaphragm-type middle differential pressure gauge. The middle differential pressure gauge comprises a gauge shell, a gauge cover, a pressure instrument, an instrument movement and a middle differential pressure diaphragm body. The pressure instrument is fixed on the instrument movement. The gauge shell and the gauge cover protect the instrument movement. The instrument movement is equipped with an instrument hand and drives the instrument hand to rotate. A corrugated pipe, a connecting rod and diaphragm tissues are internally installed in the middle differential pressure diaphragm body. The upper part is connected with the instrument movement and the lower part is connected with the diaphragm tissues. The lower part of the middle differential pressure diaphragm body is equipped with a low pressure inlet and a high pressure inlet. The differential pressure gauge also comprises an overvoltage protector. The overvoltage protector is clamped between the diaphragm tissues, and is connected with the connecting rod. Through the above technical scheme, a diaphragm-type middle differential pressure gauge can protect a differential pressure and prolongs the service life is prepared. Through usage of the overvoltage protector, the service life of the diaphragm tissues is prolonged greatly, and the cost is lowered. CrNi stainless steel has good corrosion resistance, so the diaphragm-type middle differential pressure gauge has high pressure-resistant properties.
Description
Technical field
The utility model relates to a kind of differential pressure gauge, particularly differential pressure gauge in a kind of diaphragm type.
Background technology
It trends towards membrane pressure gage measuring small uniaxial pressure, that is to say that membrane pressure gage can only measure the pressure that a pressure-acting produces on diaphragm time.When two pressure act on diaphragm simultaneously, just need to use differential pressure gauge.
Differential pressure gauge is the special instrument kind of a class in tensimeter, is applicable to or different medium identical to two kinds of pressure and measures, and the differential pressure value of this two media is shown.Differential pressure gauge is generally used for detecting the loss of pressure medium.It has been widely used in the various industries such as industrial and mineral, chemical industry, food, medical treatment, scientific research.In recent years, the market demand of various differential pressure gauges is increasing, has a extensive future.In the course of the work, differential pressure makes diaphragm generation deformation to differential pressure gauge in the market, owing to there is no protective device, still continues to deform when pressure reduction is larger, causes the damage of diaphragm; At actual operating process mesohigh medium and low piezodielectric, may connect instead due to misoperation, can cause equally the distortion of diaphragm excessive, and then cause the damage of diaphragm simultaneously.
Therefore need at present a kind ofly can protect differential pressure gauge in the life-extending diaphragm type of differential pressure gauge.
Utility model content
In order to address the above problem, the utility model provides a kind of can protect differential pressure gauge in the life-extending diaphragm type of differential pressure gauge.
Differential pressure gauge in a kind of diaphragm type in the utility model, comprise watchcase, watch glasses, manometer, meter movement and middle differential diaphragm body, described manometer is fixed on meter movement, described watchcase and watch glasses have been protected meter movement, described meter movement is provided with instrument indicator and drives the rotation of instrument indicator, in described middle differential diaphragm body, be built-in with corrugated tube, connecting rod and diaphragm tissue, described connecting rod top is connected with meter movement, described connecting rod bottom and diaphragm tissue-welding, described middle differential diaphragm body bottom is provided with low-pressure inlet and high pressure entry, it is characterized in that, also comprise over-pressure safety device, described over-pressure safety device is fastened between diaphragm tissue, and be connected with connecting rod.
In such scheme, also comprise square column, described square column is located between watchcase and middle differential diaphragm body, plays the effect of protection connecting rod.
In such scheme, described instrument indicator measurement range is 0～16mbar.
In such scheme, described instrument indicator measurement range is 0～25bar.The setting of multiple range makes to select very abundant.
In such scheme, the pressure limit of described high pressure entry is 0～40bar.
In such scheme, described diaphragm is organized as CrNi stainless steel diaphragm tissue.
Advantage of the present utility model and beneficial effect are: the utility model provides a kind of can protect differential pressure gauge in the life-extending diaphragm type of differential pressure gauge.The use of over-pressure safety device extends the life-span of diaphragm tissue greatly, reduced cost, and CrNi stainless steel has good resistance to corrosion.So this differential pressure gauge has higher withstand voltage properties, be suitable for also very strong place of the very strong medium of measurement gas and liquid corrosion and surrounding environment corrosivity.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of differential pressure gauge in a kind of diaphragm type of the utility model;
Fig. 2 is outboard profile of the present utility model.
In figure: 1, watchcase 2, watch glasses 3, manometer 4, middle differential diaphragm body
5, instrument indicator 6, connecting rod 7, diaphragm tissue 8, low-pressure inlet
9, high pressure entry 10, over-pressure safety device 11, square column
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
As Fig. 1, shown in Fig. 2, the utility model is differential pressure gauge in a kind of diaphragm type, comprise watchcase 1, watch glasses 2, manometer 3, meter movement and middle differential diaphragm body 4, manometer 3 is fixed on meter movement, watchcase 1 and watch glasses 2 have been protected meter movement, meter movement is provided with instrument indicator 5 and drives 5 rotations of instrument indicator, in middle differential diaphragm body 4, be built-in with corrugated tube, connecting rod 6 and diaphragm tissue 7, connecting rod 6 tops are connected with meter movement, connecting rod 6 bottoms are connected with diaphragm tissue 7, middle differential diaphragm body 4 bottoms are provided with low-pressure inlet 8 and high pressure entry 9, differential pressure gauge also comprises over-pressure safety device 10, over-pressure safety device 10 is fastened between diaphragm tissue 7, and be connected with connecting rod 6.
Also comprise square column 11, square column 11 is located between watchcase 1 and middle differential diaphragm body 4, plays the effect of protection connecting rod 6.Diaphragm tissue 7 is CrNi stainless steel diaphragm tissue.
When the low pressure in figure and high pressure enter instrument by low-pressure inlet 8 and high pressure entry 9 respectively, because varying in size of pressure can produce pressure divergence, the deviation action producing is in the diaphragm tissue 7 of middle differential diaphragm body 4 inside, diaphragm tissue 7 makes it produce axially-movable by over-pressure safety device 10 drivening rods 6 and produces measurement displacement, it is measured displacement and by connecting rod 6, is transferred to the driver core of manometer 3 inside, driver core changes into instrument indicator 5 by measurement displacement and rotates, thereby make instrument indicator 5 on manometer 3, indicate measured difference, to reach the effect of Measurement accuracy.
In diaphragm type, differential pressure gauge has high-strength anti-overload ability, and its anti-overload ability realizes by over-pressure safety device 10.When pressure difference value is excessive, over-pressure safety device 10 will protect diaphragm tissue 7 to avoid distortion, thereby has played the effect of protection instrument.And the good resistance to corrosion of CrNi stainless steel makes differential pressure gauge be applicable to severe corrosive environment.
In stainless steel membrane chip, differential pressure gauge is mainly used in the positive/negative pressure end of filtrator, liquid tank liquid level, the monitoring of pump and control, the monitoring of filtrator, the measurement of the environment place pressure differentials such as closed container inventory measurement.
Just comparatively speaking, the pressure that high pressure refers to measuring media is relatively high for " high pressure " described in above-described embodiment and " low pressure ", and it is relatively low that low pressure refers to the pressure of measuring media.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. differential pressure gauge in a diaphragm type, comprise watchcase, watch glasses, manometer, meter movement and middle differential diaphragm body, described manometer is fixed on meter movement, described watchcase and watch glasses have been protected meter movement, described meter movement is provided with instrument indicator and drives the rotation of instrument indicator, in described middle differential diaphragm body, be built-in with corrugated tube, connecting rod and diaphragm tissue, described connecting rod top is connected with meter movement, described connecting rod bottom and diaphragm tissue-welding, described middle differential diaphragm body bottom is provided with low-pressure inlet and high pressure entry, it is characterized in that, also comprise over-pressure safety device, described over-pressure safety device is fastened between diaphragm tissue, and be connected with connecting rod.
2. differential pressure gauge in a kind of diaphragm type according to claim 1, is characterized in that, also comprises square column, and described square column is located between watchcase and middle differential diaphragm body, plays the effect of protection connecting rod.
3. differential pressure gauge in a kind of diaphragm type according to claim 1, is characterized in that, described instrument indicator measurement range is 0～16mbar.
4. differential pressure gauge in a kind of diaphragm type according to claim 1, is characterized in that, described instrument indicator measurement range is 0～25bar.
5. differential pressure gauge in a kind of diaphragm type according to claim 1, is characterized in that, the pressure limit of described high pressure entry is 0～40bar.
6. differential pressure gauge in a kind of diaphragm type according to claim 1, is characterized in that, described diaphragm is organized as CrNi stainless steel diaphragm tissue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686126.XU CN203587271U (en) | 2013-10-31 | 2013-10-31 | Diaphragm-type middle differential pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686126.XU CN203587271U (en) | 2013-10-31 | 2013-10-31 | Diaphragm-type middle differential pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587271U true CN203587271U (en) | 2014-05-07 |
Family
ID=50585174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320686126.XU Expired - Fee Related CN203587271U (en) | 2013-10-31 | 2013-10-31 | Diaphragm-type middle differential pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596698A (en) * | 2013-10-31 | 2015-05-06 | 上海赛途仪器仪表有限公司 | Diaphragm-type differential pressure gauge |
| CN104776953A (en) * | 2015-04-15 | 2015-07-15 | 江苏德尔森传感器科技有限公司 | Detection method of fluid medium pressure difference value |
-
2013
- 2013-10-31 CN CN201320686126.XU patent/CN203587271U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596698A (en) * | 2013-10-31 | 2015-05-06 | 上海赛途仪器仪表有限公司 | Diaphragm-type differential pressure gauge |
| CN104776953A (en) * | 2015-04-15 | 2015-07-15 | 江苏德尔森传感器科技有限公司 | Detection method of fluid medium pressure difference value |
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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 |
Granted publication date: 20140507 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |