CN202485858U - Isolation pressure-limiting protector - Google Patents
Isolation pressure-limiting protector Download PDFInfo
- Publication number
- CN202485858U CN202485858U CN2012201392143U CN201220139214U CN202485858U CN 202485858 U CN202485858 U CN 202485858U CN 2012201392143 U CN2012201392143 U CN 2012201392143U CN 201220139214 U CN201220139214 U CN 201220139214U CN 202485858 U CN202485858 U CN 202485858U
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- CN
- China
- Prior art keywords
- pressure
- liquid storage
- isolation
- storage cylinder
- separate cavities
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- 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
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Abstract
An isolation pressure-limiting protector comprises a pressure acquisition primary instrument, a primary instrument connector, a body, a pressure regulator, a liquid storage cavity, a meshy isolation pad, an isolation membrane, an isolation cavity and a pressure transmission connector. The isolation pressure-limiting protector is characterized in that the pressure acquisition primary instrument is in threaded connection with the primary instrument connector which is arranged at the middle of an upper end of the body, the primary instrument connector is communicated with the liquid storage cavity which is disposed on the body, the pressure regulator is in threaded connection with the liquid storage cavity, the liquid storage cavity is communicated with the isolation cavity of the body through a pressure transmission hole and the meshy isolation pad, the isolation membrane is fixed inside the isolation cavity through the pressure transmission connector, and the pressure transmission connector is connected with a measured medium pipeline. The isolation pressure-limiting protector is simple in structure, reliable in principle, and accurate in measuring and showing of pressure. Besides, the measuring and showing of pressure within a range limit of the primary instrument are ensured, the primary instrument is protected, and production accidents caused by damage of the primary instrument when pressure of a pressing line rises suddenly are prevented.
Description
Technical field
The utility model relates in oil, the chemical field hydrodynamic pressure measurement activity commonly used a kind of be used for protecting pressure transducer or manometric isolation voltage-limiting protector, specifically a kind of isolation voltage-limiting protector.
Background technology
The measurement of hydrodynamic pressure is very common in oil, chemical industry and other industry; Continuous development along with technology; Also increasingly high to tonometric requirement, such as, increasing, the tonometric accuracy requirement of tonometric scope is increasingly high, the measurement of corrosive fluid etc.For this reason; Often need place a plurality of pressure transducers or tensimeter at a spot pressure; But how to protect, how to prevent to corrode most important to the pressure transducer or the tensimeter of little range; In case, influence the ordinary production research work when causing economic loss, thereby possibly result in greater loss because precision measurement apparatus superpressure or corrosion are easy to damage.Present solution mainly is to add valve control; Hand valve, motorized valve, pneumatic valve etc. are arranged; Their common characteristics need increase control gear exactly, need artificial Monitoring and Controlling like hand valve, and motorized valve needs electric operator; And electric operator needs artificial or go to trigger the motor drive mechanism action automatically, and pneumatic valve need increase the control gear of air feed and gas etc.Isolator also has ready-made product, but function ratio is more single, has only the isolation anti-corrosion function basically, and does not have the voltage-limiting protection function.
Summary of the invention
The purpose of the utility model is to provide a kind of isolation voltage-limiting protector; Utilize incompressible principle of liquid and the structure of isolating voltage-limiting protector; Utilize to isolate gather the method for pressure pressure transducer or tensimeter are protected, prevent the accident that causes to the damage of precision instrument and because of leakage.
The technical scheme of the utility model realizes in the following manner:
The utility model comprises that pressure acquisition is once shown, meter connector, body, pressure governor, liquid storage cylinder, netted isolating pad, barrier film, separate cavities, pressure transmission joint; It is characterized in that pressure acquisition once shows to be threaded with a meter connector of body upper center; Meter connector is connected with liquid storage cylinder on being located at body; Pressure governor links to each other with the liquid storage cylinder screw thread; Liquid storage cylinder is connected with separate cavities on the body through pressure transmission hole and netted isolating pad, and barrier film is fixed in the separate cavities through the pressure transmission joint, and the pressure transmission joint links to each other with the measured medium pipeline.
Body is made as cylindrical or rectangle, is provided with or is welded with box thread or change a meter connector of male thread at upper top, and level is provided with the outside liquid storage cylinder of opening at the middle part; Opening part is provided with box thread; In the middle part of down, be provided with the downward arc separate cavities of nock, be provided with the cylinder open groove in arc separate cavities bottom, open slot is provided with box thread; Central upper is provided with cylindrical netted isolating pad on arc separate cavities top, is provided with pressure transmission hole between meter connector, liquid storage cylinder and the netted isolating pad.
Pressure governor is made as cylindrical, and the front portion is provided with O-ring seal, the middle part be provided with liquid storage cylinder on the box thread of box thread coupling, the rear portion is provided with the spanner rib; Also can be made as piston to the front portion, the rear portion is made as single ended bolt; Also can the front portion be made as piston, the middle part is made as volute spring, the rear portion is made as single ended bolt or jackscrew.
The pressure transmission joint is made as cylindrical; Periphery is provided with the male thread that is complementary with body bottom box thread; The bottom be provided with band male thread or box thread with the joint that is connected by the side medium pipeline; Be provided with intercommunicating pore at the center, last end face can be made as the plane, also can be made as the arcwall face corresponding with the arc separate cavities of body.
Principle of work of the utility model and advantage:
The utility model utilizes the incompressible principle of liquid to carry out the measured medium pressure isolation surveyed to show, to utilize the liquid storage cylinder liquid storage, to utilize pressure governor to exert pressure to make to liquid and once express the regulation range; Define separate cavities this moment, pressure transmission hole and the liquid measure of once showing, once table can only be surveyed in amount title scope and show pressure; After being adjusted at range ability; Regulate pressure governor, make and once show to make zero, connection pressure is presented at linear pressure with the variation of unit pressure.Under abnormal conditions, when linear pressure exceeded the range of table once suddenly, netted isolating pad had been done supporting to barrier film, can not burst barrier film; Once table can not surpass range yet, and bad if corrosive medium through the isolation of barrier film, is once shown also can not corrode, the utility model is simple in structure; Principle is reliable, surveys and shows that pressure is accurate, has guaranteed once to show to survey in the range ability and has shown pressure; Protected once table, prevented that line ball pressure from increasing suddenly, once table damages the industrial accident that causes.
Description of drawings
Fig. 1-the utility model structural representation;
The netted isolating pad 3-barrier film of 1-liquid storage cylinder 2-4-separate cavities 5-pressure acquisition is once shown 6-body 7-pressure governor 8-pressure transmission joint among the figure.
Embodiment
For further disclosing the technical scheme of the utility model, elaborate through embodiment below in conjunction with Figure of description:
The utility model comprises pressure acquisition once table 5, meter connector, body 6, pressure governor 7, liquid storage cylinder, netted isolating pad 2, barrier film 3, separate cavities 4, pressure transmission joint 8; It is characterized in that pressure acquisition once shows to be threaded with a meter connector of body upper center; Meter connector is connected with liquid storage cylinder on being located at body; Pressure governor links to each other with the liquid storage cylinder screw thread; Liquid storage cylinder is connected with separate cavities on the body through pressure transmission hole and netted isolating pad, and barrier film is fixed in the separate cavities through the pressure transmission joint, and the pressure transmission joint links to each other with the measured medium pipeline.
When using the utility model, pressure transmission joint 8 is installed on the compression fittings of measured medium pipeline, once regulate pressure governor 7 in the range front and back of table 5 according to pressure acquisition; Make the liquid of liquid storage cylinder 1 press down barrier film 3, be full of once table 5 of separate cavities 4, pressure transmission hole and pressure acquisition, discharge air, continue to regulate pressure governor; Make a gauge pressure designation data in range ability, regulate pressure governor again, making once, table makes zero; Amount of liquid still is in the amount of liquid of once showing range ability, opens the operation valve on the compression fittings, and the pressure of measured medium acts on the accommodating pressure-transmitting liquid through barrier film; The high more once table of the unit pressure of measured medium shows that pressure is big more, and under the pressure normal condition of measured medium, once table can not surpass range; When the pressure of measured medium sharply increased suddenly, because netted isolating pad 2 is set, barrier film can not burst; The accommodating pressure-transmitting liquid amount can not change; Once table is still surveyed in range ability and is shown pressure, has guaranteed manometric measuring accuracy, and having protected once, table is not destroyed.
Claims (4)
1. isolate voltage-limiting protector for one kind; Comprise that pressure acquisition is once shown, meter connector, body, pressure governor, liquid storage cylinder, netted isolating pad, barrier film, separate cavities, pressure transmission joint; It is characterized in that pressure acquisition once shows to be threaded with a meter connector of body upper center; Meter connector is connected with liquid storage cylinder on being located at body, and pressure governor links to each other with the liquid storage cylinder screw thread, and liquid storage cylinder is connected with separate cavities on the body through pressure transmission hole and netted isolating pad; Barrier film is fixed in the separate cavities through the pressure transmission joint, and the pressure transmission joint links to each other with the measured medium pipeline.
2. according to claims 1 described isolation voltage-limiting protector; It is characterized in that body is made as cylindrical or rectangle, be provided with or be welded with a meter connector of box thread or male thread at upper top, level is provided with the outside liquid storage cylinder of opening at the middle part; Opening part is provided with box thread; In the middle part of down, be provided with the downward arc separate cavities of nock, be provided with the cylinder open groove in arc separate cavities bottom, open slot is provided with box thread; Central upper is provided with cylindrical netted isolating pad on arc separate cavities top, is provided with pressure transmission hole between meter connector, liquid storage cylinder and the netted isolating pad.
3. according to claims 1 described isolation voltage-limiting protector, it is cylindrical to it is characterized in that pressure governor is made as, and the front portion is provided with O-ring seal, the middle part be provided with liquid storage cylinder on the box thread of box thread coupling, the rear portion is provided with the spanner rib; Also can be made as piston to the front portion, the rear portion is made as single ended bolt; Also can the front portion be made as piston, the middle part is made as volute spring, the rear portion is made as single ended bolt or jackscrew.
4. according to claims 1 described isolation voltage-limiting protector; It is cylindrical to it is characterized in that the pressure transmission joint is made as; Periphery is provided with the male thread that is complementary with body bottom box thread, the bottom be provided with band male thread or box thread with the joint that is connected by the side medium pipeline, be provided with intercommunicating pore at the center; Last end face can be made as the plane, also can be provided with the arcwall face corresponding with the arc separate cavities of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201392143U CN202485858U (en) | 2012-04-05 | 2012-04-05 | Isolation pressure-limiting protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201392143U CN202485858U (en) | 2012-04-05 | 2012-04-05 | Isolation pressure-limiting protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485858U true CN202485858U (en) | 2012-10-10 |
Family
ID=46960273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201392143U Expired - Fee Related CN202485858U (en) | 2012-04-05 | 2012-04-05 | Isolation pressure-limiting protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485858U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364132A (en) * | 2013-07-25 | 2013-10-23 | 安徽皖科电子工程有限公司 | Pressure sensor with overpressure protective device |
| CN103913270A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Calibration device and operation method thereof |
| CN111562049A (en) * | 2020-06-03 | 2020-08-21 | 合肥左心科技有限公司 | Pressure transmitter suitable for high-strength impact |
-
2012
- 2012-04-05 CN CN2012201392143U patent/CN202485858U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913270A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Calibration device and operation method thereof |
| CN103364132A (en) * | 2013-07-25 | 2013-10-23 | 安徽皖科电子工程有限公司 | Pressure sensor with overpressure protective device |
| CN111562049A (en) * | 2020-06-03 | 2020-08-21 | 合肥左心科技有限公司 | Pressure transmitter suitable for high-strength impact |
| CN111562049B (en) * | 2020-06-03 | 2021-10-08 | 大庆市豪方石油科技有限公司 | Pressure transmitter suitable for high-strength impact |
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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: 20121010 Termination date: 20170405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |