CN102466536B - For the potential device measuring pressure - Google Patents
For the potential device measuring pressure Download PDFInfo
- Publication number
- CN102466536B CN102466536B CN201110157364.7A CN201110157364A CN102466536B CN 102466536 B CN102466536 B CN 102466536B CN 201110157364 A CN201110157364 A CN 201110157364A CN 102466536 B CN102466536 B CN 102466536B
- Authority
- CN
- China
- Prior art keywords
- cylinder section
- pressure
- piston
- narrow
- catch bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to and a kind ofly to comprise: one is arranged on the hollow cylinder seat on a determinand for measuring the potential device of pressure, and one is arranged on piston unit in this hollow cylinder seat movably.This hollow cylinder seat comprises a narrow cylinder section, and an xsect is greater than the wide cylinder section of this narrow cylinder section, and this narrow cylinder section has first port away from this wide cylinder section, and this wide cylinder section has second port away from this narrow cylinder section.This piston unit comprises one and is arranged on piston in this wide cylinder section, and one is arranged on this wide cylinder section and the intersegmental catch bar of this narrow cylinder, make this hollow cylinder seat inner region be divided into the compartment that first pressure space, be positioned between catch bar and the first port is positioned at narrow cylinder section and piston space, and one is positioned at the second pressure space between piston and the second port.By above-mentioned design, can supply to measure the testing pressure of this determinand after transformation buffering, so result of use widely can be reached.
Description
Technical field
The present invention relates to a kind of potential device, particularly relating to a kind of potential device for measurement pressure of the testing pressure for measuring a determinand.
Background technology
The power acted in unit area is called pressure Vertical Uniform, also known as pressure, when pressure relative to environment atmospheric pressure be on the occasion of time, be called malleation; When pressure relative ambient pressure is negative value, be called negative pressure.Pressure is the important parameter in commercial production, if during the pressure overrate of such as high pressure vessel, work peace just likely occurs unexpected, therefore must carry out at any time measuring and controlling.And in some industrial processes, pressure directly can affect quality and the production efficiency of product, indirectly temperature, flow velocity or liquid level can also be predicted whereby even under certain condition.
Pressure gauge is used for detected pressures, it is divided into pressure type according to principle of work, flexible type, the type such as load-type and electric measuring type, and more because of scalable pressure limit such as high pressure in use, middle pressure, low pressure, minute-pressure or negative pressure and different, general conventional pressure gauge is used for greatly pressure and low pressure in measurement, a such as bar pipe, together with its pressure inductor is connected directly between with pointer acting device, so when the pressure of determinand exceeds its pressure limit, the instantaneous variation of pressure can produce sizable power of pullling, interlock is forced to destroy pointer acting device, and then cause whole pressure gauge fault.In addition, if during requirement micrometer pressure, then the quite high pressure gauge of sensitivity must be manufactured, therefore not only usable range is restricted, pressure gauge even for measuring minute-pressure or high pressure or UHV (ultra-high voltage) needs special manufacture, and its structure is often comparatively complicated, and price is also relatively costly.The bottleneck of hyperbaric environment cannot be used in order to break through general pressure gauge, the present invention just provides one to utilize transformation Cushioning Design, make general pressure gauge expanded measuring range, and minute-pressure or high pressure or UHV (ultra-high voltage) or subnormal ambient can be used in, to reach the potential device of result of use widely.
As can be seen here, above-mentioned existing pressure gauge with in use in structure, obviously still has inconvenience and defect, and is urgently further improved.Therefore how to found a kind of potential device for measurement pressure of new structure, also become the target that current industry pole need be improved.
Summary of the invention
The object of the invention is to, overcome the defect that existing pressure gauge exists, and a kind of potential device for measurement pressure of new structure is provided, technical matters to be solved makes it provide a kind of potential device for measurement pressure that can be used for extensive magnitude measuring pressure scope, is very suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of potential device for measuring pressure that the present invention proposes, it is the testing pressure for measuring a determinand, and comprise: one is arranged on the hollow cylinder seat on this determinand, a piston unit be arranged on movably in this hollow cylinder seat, and one is arranged on this hollow cylinder seat away from one end of this determinand and can shows the display unit of fluid pressure value, wherein: this hollow cylinder seat comprises the narrow cylinder section of a hollow, and one expands extension outward by this narrow cylinder section and xsect is greater than the wide cylinder section of this narrow cylinder section, this narrow cylinder section has first port away from this wide cylinder section, this wide cylinder section has second port away from this narrow cylinder section, one of them of this first port and the second port is communicated in this determinand, this piston unit comprises a piston be inlaid in movably in this wide cylinder section, and one is arranged on this wide cylinder section and the intersegmental catch bar of this narrow cylinder movably, this catch bar has a pressure inserted in liquid-tight manner in this narrow cylinder section and pushes away end, and one is stretched into this wide cylinder section and the plunger end of this piston of energy pushing tow, by means of the setting of this piston and this catch bar, this hollow cylinder seat inner region is divided into a pressure being positioned at this catch bar to push away between end and this first port and the first pressure space of containing fluid, a plunger end and this piston space and the compartment be in communication with the outside being positioned at this narrow cylinder section, and one to be positioned between this piston and this second port and the second pressure space of containing fluid.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The aforesaid potential device for measuring pressure, this wherein said wide cylinder section also has at least one and is communicated with this compartment and extraneous air hole.
Aforesaid for measuring the potential device of pressure, this wherein said piston unit also comprises one and to be embedded in this narrow cylinder section and to insert the O type ring stretched for this catch bar in liquid-tight manner.
The potential device of aforesaid measurement pressure, this wherein said wide cylinder section also has a basal disc, and the detachable and overhead guard of cover cap on this basal disc that is spirally connected of adjustable angle, this basal disc has a mounting hole, this narrow cylinder section also has the siphunculus that is stretched into this mounting hole, one is protruded out outward by the ora terminalis radial direction of this siphunculus and is positioned at the lower flange bottom this basal disc, one to be positioned at above this basal disc and to be bolted in the cap head of this siphunculus, and one is protruded out and the upper flange of position at this basal disc top outward by the ora terminalis radial direction of this cap head, this catch bar is extended through this siphunculus and this cap head.The present invention compared with prior art has obvious advantage and beneficial effect.As known from the above, for achieving the above object, the invention provides a kind of potential device for measuring pressure, is the testing pressure for measuring a determinand, and comprise: one is arranged on the hollow cylinder seat on this determinand, and a piston unit be arranged on movably in this hollow cylinder seat, wherein: this hollow cylinder seat comprises the narrow cylinder section of a hollow, and one expands extension outward by this narrow cylinder section and xsect is greater than the wide cylinder section of this narrow cylinder section, this narrow cylinder section has first port away from this wide cylinder section, this wide cylinder section has second port away from this narrow cylinder section, one of them of this first port and the second port is communicated in this determinand, this piston unit comprises a piston be inlaid in movably in this wide cylinder section, and one is arranged on this wide cylinder section and the intersegmental catch bar of this narrow cylinder movably, this catch bar has a pressure inserted in liquid-tight manner in this narrow cylinder section and pushes away end, and one is stretched into this wide cylinder section and the plunger end of this piston of energy pushing tow, by means of the setting of this piston and this catch bar, this hollow cylinder seat inner region is divided into a pressure being positioned at this catch bar to push away between end and this first port and the first pressure space of containing fluid, a plunger end and this piston space and the compartment be in communication with the outside being positioned at this narrow cylinder section, and one to be positioned between this piston and this second port and the second pressure space of containing fluid.
By technique scheme, the present invention at least has following advantages and beneficial effect for the potential device measuring pressure: this hollow cylinder seat is provided with wide, narrow two rank cylinder sections, and be separately installed with the different piston of area and catch bar within it, in stationary fluid under identical acting force, the catch bar of small size can be subject to large pressure, and large-area piston can be subject to the principle of little pressure, can in order to measure the testing pressure of this determinand after transformation, so result of use widely can be reached.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other objects of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the present invention for one first preferred embodiment of the potential device of measurement pressure;
Fig. 2 is a using state figure of this first preferred embodiment;
Fig. 3 is the cross-sectional schematic of the present invention for one second preferred embodiment of the potential device of measurement pressure;
Fig. 4 is a part of cross-sectional schematic of the present invention for one the 3rd preferred embodiment of the potential device of measurement pressure.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of potential device for measurement pressure proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
Consult Fig. 1, the first preferred embodiment of potential device of the present invention, be the testing pressure for measuring a determinand 1, and comprise: a hollow cylinder seat 2, piston unit 3, and a display unit 4.
This hollow cylinder seat 2 comprises one and is arranged on described determinand 1 and the narrow cylinder section 21 of hollow, and one to extend and xsect is greater than the wide cylinder section 22 of this narrow cylinder section 21 by expanding outward above this narrow cylinder section 21.This narrow cylinder section 21 is spirally connected removably to be arranged on described determinand 1, and have one away from this wide cylinder section 22 and be communicated with the first port 211 of determinand 1.This wide cylinder section 22 has second port 221 away from this narrow cylinder section 21, and one is communicated with extraneous air hole 222 close to this narrow cylinder section 21.Quantity or the shape of implementing upper second port 221 and air hole 222 also can increase or change, and are not limited to the present embodiment.
In addition, for the ease of manufacturing, this hollow cylinder seat 2 can be riveted or weld by multiple component or be spirally connected and form, and such as this wide cylinder section 22 also has a basal disc 223, and the detachable and overhead guard 224 of cover cap above this basal disc 223 that is spirally connected in adjustable angle.This basal disc 223 has the mounting hole 225 that is positioned at central authorities.This narrow cylinder section 21 also has a lower end and is bolted in this determinand 1 removably and the siphunculus 212, that this mounting hole 225 is stretched in upper end is protruded out outward by the apical margin radial direction of this siphunculus 212 and the lower flange 213, be positioned at bottom this basal disc 223 to be positioned at above this basal disc 223 and to be bolted in the cap head 214 of the upper end of this siphunculus 212, and one is protruded out and the upper flange 215 of position at this basal disc 223 top outward by the apical margin radial direction of this cap head 214.But be not limited to this on implementing, communicate with each other and wide, the narrow cylinder section 22,21 that varies in size of xsect as long as be provided with two sections.
This piston unit 3 comprises 31, one, a piston be inlaid in movably in this wide cylinder section 22 and is arranged on catch bar 32 between this wide cylinder section 22 and this narrow cylinder section 21 movably, and one to be embedded in this narrow cylinder section 21 and to insert for this catch bar 32 and to stretch and can the O type ring 33 of liquid-tight movement.By means of the setting of this piston 31 with this catch bar 32, this hollow cylinder seat 2 inner region is divided into one to be positioned at below catch bar 32 and first pressure space 23, of containing fluid is positioned at above narrow cylinder section 21 and below piston 31 between and the compartment 24 be in communication with the outside, and one to be positioned at above piston 31 and the second pressure space 25 of containing fluid.Described fluid refers to flowable materials, such as gas or liquid or its mixture.
This piston 31 has a disk body 311 pushed by this catch bar 32, and one to be arranged on this disk body 311 and to be closely against the colloid 312 of this wide cylinder section 22 around.This disk body 311 is become by the hard material such as metal of sufficient intensity, and this colloid 312 such as can be made up of rubber or silica gel material of soft material, this disk body 311 is for this colloid 312 of bracketing, and this colloid 312 then makes the fluid in this second pressure space 25 can not flow into this compartment 24.This catch bar 32 is extended through this siphunculus 212 and this cap head 214, and has a pressure inserted in liquid-tight manner in this narrow cylinder section 21 downwards and push away end 321, and one extends upwardly into this wide cylinder section 22 and can the plunger end 322 of this piston 31 of pushing tow.This O type ring 33 is embedded between this siphunculus 212 and this cap head 214, and be closely against this catch bar 32 around, and when this catch bar 32 is moved, the fluid in the first pressure space 23 can not flow into this compartment 24.Certainly in design, the structure of this piston 31 and this catch bar 32, and the shape of O type ring 33, setting position and quantity also can change, and are not limited with the present embodiment.
This display unit 4 comprises one and is installed on this wide cylinder section 22 and the pointer gauge 41 being communicated with this second port 221.The pointer gauge 41 of the present embodiment be upright status on this hollow cylinder seat 2, the fluid pressure value in the second pressure space 25 can be shown.Because this display unit 4 can adopt general existing pressure gauge, such as gear type pressure gauge, bar galge, diaphragm type pressure gauge, numerical monitor U-tube manometer, or helical manometer ... Deng, its structure also non-invention emphasis, so no longer describe its structure in detail at this.
During use, this piston unit 3 can be mobile in this hollow cylinder seat 2 along with this determinand 1 pressure variation, as shown in Figure 2, when the testing pressure P1 of this determinand 1 raises, its inner fluid will pour this first pressure space 23, the pressure of this catch bar 32 of pushing tow pushes away end 321, this catch bar 32 direction toward this display unit 4 as shown in arrow 5 is moved, and upwards with this piston 31 of a plunger end 322 pushing tow together mobile distance h, this piston 31 will squeeze and push away this second pressure space 25 inner fluid simultaneously, make the fluid pressurized in this second pressure space 25, and namely this display unit 4 can record a transformation pressure P 2 of this fluid, and be shown in this pointer gauge 41.
Should be noted that, because this first pressure space 23 is communicated with this determinand 1, so the hydrodynamic pressure in this first pressure space 23 equals the testing pressure P1 of this determinand 1, when testing pressure P1 this catch bar 32 of pushing tow raised, area due to this catch bar 32 is A1, this catch bar 32 is equivalent to be subject to one directed force F=P1 × A1, and this this directed force F can act on the piston 31 that area is A2 by this catch bar 32, this piston 31 can squeeze with transformation pressure P 2=F/A2 the fluid pushed away in this second pressure space 25, area A 2 due to this piston 31 is greater than the area A 1 of this catch bar 32, so this transformation pressure P 2 can be less than this testing pressure P1, design in this decompression is slow, this pointer gauge 41 is made relatively to be subject to less transformation pressure P 2, its pressure limit can not be exceeded and be damaged, as long as the transformation multiple of corresponding pressure in enforcement, be exactly that the area ratio A2/A1 of this piston 31 and catch bar 32 is to change scale, demonstrate the numerical value of transformation multiple × transformation pressure P 2.
Give one example to illustrate, if the area A 1=1cm of this catch bar 32
2, the area A 2=10cm of this piston 31
2, as testing pressure P1=100Kg/cm
2time, then directed force F=100Kg/cm of being subject to of this catch bar 32
2× 1cm
2=100Kg, and this piston 31 also can be subject to same directed force F, makes this transformation pressure P 2=100Kg/10cm
2=10Kg/cm
2, make this display unit 4 be subject to 10Kg/cm
2pressure, the scale numerical value of this pointer gauge 41 is shown as transformation multiple (A2/A1) × transformation pressure P 2=10 × 10Kg/cm certainly
2=100Kg/cm
2.That is testing pressure P1 is 100Kg/cm
2, the pressure that this display unit 4 is subject to is 10Kg/cm
2, but the scale numerical value of this pointer gauge 41 is shown as 100Kg/cm
2, be same as testing pressure P1.
Separately should be specified: this catch bar 32 is the disk bodies 311 pushing piston 31, when the pressure instantaneous loss of pressure of determinand 1, such as pipe breakage, that is by high pressure moment rapid be depressurized to normal pressure i.e. atmospheric pressure time, this catch bar 32 can react and decline rapidly with it by interlock instantaneously, now, catch bar 32 also can follow decline instantaneously, because the disk body 311 that the mode of pushing contacts at piston 31 adopted by catch bar 32 of the present invention, so disk body 311 can be pushed when catch bar 32 moves, but when catch bar 32 moves down instantaneously, disk body 311 can't be pulled, but by the dynamic balance of piston about 31, piston 31 is allowed to move down.Therefore, when determinand 1 instantaneous loss of pressure, catch bar 32 moves down instantaneously, but piston 31 moves down slowly, and display unit 4 can not be caused thus to damage.
Relative, if during desired amount micrometer pressure, as long as potential device of the present invention is oppositely installed, that is pressure communication second pressure space 25 of in determinand 1 is made, and display unit 4 is assembled in the first pressure space 23, minute-pressure can be adjusted to applicable display unit 4 by transformer action and measure and the pressure range that shows shows.
Consult Fig. 3, the structure of the second preferred embodiment of potential device of the present invention is approximately identical to the first embodiment, comprises equally: a hollow cylinder seat 2, piston unit 3, and a display unit 4.Different parts is: the pointer gauge 41 of the present embodiment is arranged on flatwise on this hollow cylinder seat 2.Because the structure of this pointer gauge 41 is also general design, so no longer illustrate at this.
Consult Fig. 4, the structure of the 3rd preferred embodiment of potential device of the present invention is approximately identical to the first embodiment, comprises equally: a hollow cylinder seat 2, piston unit 3, and a display unit 4.Different parts is: the present embodiment is the measurement applying to negative pressure, because be used in negative pressure, therefore this catch bar 32 will be revised as the structure pulling disk body 311 by the kenel originally pushing disk body 311, enforcement is make this disk body 311 have one to be positioned at central screw 313, this colloid 312 has one to should the perforation 314 of screw 313, the plunger end 322 of this catch bar 32 has the fluting 323 of central authorities toward lower recess, and this piston unit 3 also comprises one takes the lead and tail end is the screw 34 of flat, and a latch 35, this screw 34 is inserted this perforation 314 downwards, be screwed into this screw 313 and embed in this fluting 323, then recycle this latch 35 and be horizontally through this plunger end 322 and this screw 34, above-mentioned component is linked together, certainly this catch bar 32 also can change with the connection structure of this piston 31, be not limited with the present embodiment.
In sum, the present invention is between this determinand 1 and this display unit 4, installation is provided with wide, narrow two rank cylinder sections 22, the hollow cylinder seat 2 of 21, and floating piston unit 3 is set in this hollow cylinder seat 2, the side being communicated with this determinand 1 due to this piston unit 3 is catch bar 32, and the side being communicated with this display unit 4 is piston 31, in stationary fluid under identical acting force, the catch bar 32 of small size can be subject to large pressure, and large-area piston 31 can be subject to the principle of little pressure, the testing pressure P1 at this determinand 1 place can be made through this transformer action, and allow this pointer gauge 41 record the transformation pressure P 2 of pressure reduction, this display unit 4 is avoided to be damaged, therefore expanded measuring range of the present invention, and hyperbaric environment can be used in, contrary, during desired amount micrometer pressure, as long as reversion is arranged, determinand 1 is changed over and is communicated to the second pressure space 25, and display unit 4 is located at the first pressure space 23, just can reach the effect of transformer action, therefore the present invention can reach environment for use and effect widely, so really object of the present invention can be reached.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. the potential device for measurement pressure, it is the testing pressure for measuring a determinand, and comprise: one is arranged on the hollow cylinder seat on this determinand, a piston unit be arranged on movably in this hollow cylinder seat, and one is arranged on this hollow cylinder seat away from one end of this determinand and can shows the display unit of fluid pressure value; It is characterized in that:
This hollow cylinder seat comprises the narrow cylinder section of a hollow, and one expands extension outward by this narrow cylinder section and xsect is greater than the wide cylinder section of this narrow cylinder section, this narrow cylinder section has first port away from this wide cylinder section, this wide cylinder section has second port away from this narrow cylinder section, one of them of this first port and the second port is communicated in this determinand
This piston unit comprises a piston be inlaid in movably in this wide cylinder section, and one is arranged on this wide cylinder section and the intersegmental catch bar of this narrow cylinder movably, this catch bar has a pressure inserted in liquid-tight manner in this narrow cylinder section and pushes away end, and one is stretched into this wide cylinder section and the plunger end of this piston of energy pushing tow, by means of the setting of this piston and this catch bar, this hollow cylinder seat inner region is divided into a pressure being positioned at this catch bar to push away between end and this first port and the first pressure space of containing fluid, a plunger end and this piston space and the compartment be in communication with the outside being positioned at this narrow cylinder section, and one to be positioned between this piston and this second port and the second pressure space of containing fluid.
2. the potential device for measuring pressure as claimed in claim 1, is characterized in that: this wide cylinder section also has at least one and is communicated with this compartment and extraneous air hole.
3. the potential device for measuring pressure as claimed in claim 1, is characterized in that: this piston unit also comprises one and to be embedded in this narrow cylinder section and to insert the O type ring stretched for this catch bar in liquid-tight manner.
4. the potential device for measurement pressure as described in claim 1 or 3, it is characterized in that: this wide cylinder section also has a basal disc, and the detachable and overhead guard of cover cap on this basal disc that is spirally connected of adjustable angle, this basal disc has a mounting hole, this narrow cylinder section also has the siphunculus that is stretched into this mounting hole, one is protruded out outward by the ora terminalis radial direction of this siphunculus and is positioned at the lower flange bottom this basal disc, one to be positioned at above this basal disc and to be bolted in the cap head of this siphunculus, and one is protruded out and the upper flange of position at this basal disc top outward by the ora terminalis radial direction of this cap head, this catch bar is extended through this siphunculus and this cap head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110157364.7A CN102466536B (en) | 2010-11-03 | 2011-06-02 | For the potential device measuring pressure |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205932404 | 2010-11-03 | ||
| CN201020593240 | 2010-11-03 | ||
| CN201020593240.4 | 2010-11-03 | ||
| CN201110157364.7A CN102466536B (en) | 2010-11-03 | 2011-06-02 | For the potential device measuring pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102466536A CN102466536A (en) | 2012-05-23 |
| CN102466536B true CN102466536B (en) | 2015-08-12 |
Family
ID=46070442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110157364.7A Expired - Fee Related CN102466536B (en) | 2010-11-03 | 2011-06-02 | For the potential device measuring pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102466536B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141725A (en) * | 2017-06-28 | 2019-01-04 | 立业成股份有限公司 | pressure gauge |
| CN111238719B (en) * | 2020-03-10 | 2022-06-21 | 云南省水利水电工程有限公司 | Grouting pressure sensing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184940U (en) * | 1985-05-13 | 1986-11-18 | ||
| JPH07128174A (en) * | 1993-11-19 | 1995-05-19 | Azuma Technos:Kk | Manometer inspection instrument |
| CN2387265Y (en) * | 1999-07-09 | 2000-07-12 | 中原石油勘探局采油三厂 | Wellhead pressure sensing device for oil-water well |
| CN2421631Y (en) * | 2000-05-26 | 2001-02-28 | 郑连荣 | Stopping pressure-guiding pressure tester |
| CN2422632Y (en) * | 2000-05-31 | 2001-03-07 | 大庆油田有限责任公司第一采油厂 | Three-way piston-form pressure gage pressure obtaning device |
| CN2731426Y (en) * | 2004-09-29 | 2005-10-05 | 濮阳市沃隆密封机械制造有限公司 | Safety pressure device |
| CN201016825Y (en) * | 2006-12-27 | 2008-02-06 | 王天 | Cement mortar injection pressure measuring device |
| CN201322675Y (en) * | 2008-10-17 | 2009-10-07 | 北京康斯特仪表科技股份有限公司 | Handheld positive and negative liquid pressure checker |
-
2011
- 2011-06-02 CN CN201110157364.7A patent/CN102466536B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184940U (en) * | 1985-05-13 | 1986-11-18 | ||
| JPH07128174A (en) * | 1993-11-19 | 1995-05-19 | Azuma Technos:Kk | Manometer inspection instrument |
| CN2387265Y (en) * | 1999-07-09 | 2000-07-12 | 中原石油勘探局采油三厂 | Wellhead pressure sensing device for oil-water well |
| CN2421631Y (en) * | 2000-05-26 | 2001-02-28 | 郑连荣 | Stopping pressure-guiding pressure tester |
| CN2422632Y (en) * | 2000-05-31 | 2001-03-07 | 大庆油田有限责任公司第一采油厂 | Three-way piston-form pressure gage pressure obtaning device |
| CN2731426Y (en) * | 2004-09-29 | 2005-10-05 | 濮阳市沃隆密封机械制造有限公司 | Safety pressure device |
| CN201016825Y (en) * | 2006-12-27 | 2008-02-06 | 王天 | Cement mortar injection pressure measuring device |
| CN201322675Y (en) * | 2008-10-17 | 2009-10-07 | 北京康斯特仪表科技股份有限公司 | Handheld positive and negative liquid pressure checker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102466536A (en) | 2012-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102466536B (en) | For the potential device measuring pressure | |
| CN208764421U (en) | A kind of valve packing seal device | |
| CN105275894B (en) | Gas high-low pressure is reported to the police and pressure compensating system | |
| CN103954263A (en) | Dipole antenna wireless strain sensor | |
| CN204944689U (en) | A kind of high-low temperature pre-warning bimetallic system cell | |
| CN204514525U (en) | A kind of water pipe water-pressure survey device based on magnetic rheology effect | |
| CN203615889U (en) | Oil way circulation cooling structure of linear displacement sensor | |
| CN201281643Y (en) | Differential pressure transmitter with sealed type septum | |
| CN204911452U (en) | Be listed as quick packaging structure of tubular reactor catalyst | |
| CN204405046U (en) | Electronic surveying pipe diameter wall thickness device | |
| CN202372266U (en) | Temperature sensor fixing device in high-pressure container | |
| CN204234705U (en) | The low pressure wheel cast mold center push rod improved | |
| CN207690603U (en) | A kind of amorphous alloy transformer with explosion prevention function | |
| CN207366336U (en) | A kind of corrosion device for test button fatigue mechanics performance test | |
| CN202534588U (en) | Explosion-proof pressure controller | |
| CN202691028U (en) | Sealing structure for graphite refiner | |
| CN203190037U (en) | Liquid level display device of liquefied natural gas vehicle-mounted bottle | |
| CN201507777U (en) | Gas holder rubber sealing membrane | |
| CN204831118U (en) | High measuring apparatu bends | |
| CN203243907U (en) | Thermostatic heat insulation device | |
| CN111141441B (en) | Pressure transmitter | |
| CN203880077U (en) | Bracket sealing device for liquid medium large-diameter high-pressure container | |
| CN203836591U (en) | Pressure-proof hoop | |
| CN204314025U (en) | A kind of frock for testing product sealing | |
| CN204101124U (en) | The continuous coverage of a kind of novel solid level of filler material becomes send output unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150812 Termination date: 20200602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |