CN203298924U - Mechanism for protecting micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement - Google Patents
Mechanism for protecting micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement Download PDFInfo
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- CN203298924U CN203298924U CN2012205949207U CN201220594920U CN203298924U CN 203298924 U CN203298924 U CN 203298924U CN 2012205949207 U CN2012205949207 U CN 2012205949207U CN 201220594920 U CN201220594920 U CN 201220594920U CN 203298924 U CN203298924 U CN 203298924U
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- differential pressure
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- measuring instrument
- sampling
- pressure
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Abstract
The utility model relates to a mechanism for protecting a micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement. The mechanism for protecting the micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement comprises a pressure generation system, a transformed three-valve manifold and a micro differential pressure sampling measuring instrument. The mechanism is characterized in that valves at two ends of the three-valve manifold are three-way valves, wherein one valve clack of each three-way valve is adopted as a feedback valve clack which can prevent the micro differential pressure sampling measuring instrument from being damaged in misoperation. With the mechanism adopted, when a micro differential pressure method is adopted to measure pipeline flow, storage tank liquid level and pressure loss, no matter what kinds of factors cause misoperation, the micro differential pressure sampling measuring instrument will not be damaged under the situation that the measuring system is properly mounted, and the safety of the measuring system can be ensured.
Description
Technical field:
The in-site measurement differential pressure relates to a lot of aspects, as: pressure loss experiment of the orifice plate differential pressure sampling of measuring flow, the liquid level sampling of sealed shell of tank, pipeline etc., all to determine that take a sample at 2 of correlation distance by differential pressure sampling and testing instrument, measure the concrete differential pressure of 2, come to determine as: flow, liquid level, pressure loss etc. draw needed physical quantity by the differential pressure signal of measuring to relevant physical relation.
Background technology:
The pressure generation systems of differential pressure sampling, may be the air compressor piping system, may be the airtight container system, may be the chemical reaction system, may be the vapor transmission piping system.
And micro differential pressure measuring instrument may be little differential pressure sensor, differential pressure transmitter, differential pressure diaphragm capsule table etc.
Often the inside actual pressure of system under test (SUT) is very large, and traditional measuring method, be to utilize three valve groups usually, as connecting system under test (SUT) and differential pressure sampling and measuring instrument, and the intermediate connecting part of zero point adjustment and switch protection effect.
The composition of three valve groups, by: after 3 two logical stop valves series connection, by series valve two end interfaces as the input media interface; Two valves of intermediate valve and other are connected through 3 pass joints, and two 3 logical interfaces, as the output interface of medium;
When three valve groups as on micro differential pressure measuring instrument and pressure generation systems, as intermediate link, as adjusting zero point, during on-off action: during middle valve open, as differential pressure sampling and measuring instrument, adjust zero point and use; While closing, as differential pressure sampling and measuring instrument shunting at zero point isolation, use; Be connected on the valve at intervening vaive two ends, the interface of valve, as the sample tap of 2 media on the pressure generation systems, use as sampling switch.Intervening vaive and interface between another two valves are connected, be connected on two interfaces of high-low pressure of differential pressure sampling and measuring instrument, as input pressure generation systems high-low pressure medium signal, signal input.
Often, in the actual field operation, can produce some maloperations; Accidentally valve one end at two ends is opened, an end closure, and the pressure of system can enter from an end, and at this moment micro differential pressure measuring instrument bears is not the differential pressure of 2 but the pressure of system can cause the damage of differential pressure sampling and measuring instrument.
In practical operation because maloperation is easy to cause the working pressure by system under test (SUT), introduce the differential pressure sampling and measuring instrument porch of a certain end, and the anti-extreme pressure of differential pressure sampling and measuring instrument is less than the pressure that enters, the anti-pressure ability of diaphragm is not resisted, and has just caused differential pressure sampling and measuring instrument to damage.
The existence of this phenomenon is in each operating mode differential pressure fields of measurement; commonplace; in view of this general phenomenon exists, invented a kind of mechanism of measure field gas system differential pressure protection differential pressure sampling and measuring instrument, to avoid the loss of the test macro that maloperation caused for this reason.
Summary of the invention:
For overcome traditional three valve groups as sampling in the middle of on-the-spot and differential pressure sampling and measuring instrument, close and regulate, the loss that causes due to maloperation;
Invented, a kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument,
Paper once, three valve block structures, its structure by: three valves of series connection, except the form of intervening vaive was constant, other two valves that are in series, all changed T-valve into.Intervening vaive is two-way valve, the two ends connecting tee joint of two-way valve, an interface of a termination T-valve of three-way connection, the conduct of other end interface, the high-low pressure sample connection of connection differential pressure sampling and measuring instrument; Two T-valve of three valve groups, two other interface, the function of an interface is sampling, the function of another interface is due to the maloperation that occurs in actual mechanical process, system pressure to be passed through to feedback link, be input to another and measure mouth, the pressure differential that makes high-low pressure measure mouth equals zero.
A kind of composition of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, by:
Pressure generation systems, three valve groups, differential pressure sampling and measuring instrument, three ingredients form, and its structure consists of:
Two high-low pressure sample taps that set by the pressure generation systems, connect improved three valve group high-low pressure sample connections, the sample tap of improved three valve groups, an end by pipeline connecting tee joint, the other end of three-way connection, by pipeline, connect differential pressure sampling and measuring instrument, high-low pressure sample connection; As two feedback interfaces of three valve groups, the feedback interface of high voltage interface position, place, connect the remaining end of the three-way connection that is connected with differential pressure sampling and measuring instrument low pressure end interface by pipeline; The feedback interface of institute's low-voltage interface position, connect the remaining end of the three-way connection that is connected with differential pressure sampling and measuring instrument high-pressure side interface by pipeline.When maloperation occurring during the course, the pressure of an end can be transported to two sample taps of differential pressure sampling and measuring instrument high-low pressure simultaneously, make the inner diaphragm of differential pressure sampling and measuring instrument, keeping being subject to simultaneously identical power, to make measuring state be the state at zero point; Because diaphragm is rigid body, in strength range, the two sides of rigid body is subjected to, in a certain amount of power, not damage simultaneously.Thereby a kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, when misoperation, can guarantee that differential pressure sampling and measuring instrument is not destroyed.
Invention main points in sum:
A kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, by: pressure generation systems, three valve groups, differential pressure sampling and measuring instrument, three ingredients form, its feature: three valve groups, intervening vaive are two-way valve; The two ends of two-way valve, be connected with an end of two three-way connections, connected the T-valve of two identical symmetries, two other interface of T-valve; One is Bonding pressure generation systems sample tap; One as maloperation feedback use, pass through connecting tube, connecting tee joint one end, the another two ends of three-way connection, one end connects the sample connection of the differential pressure sampling and measuring instrument of this valve position, and an end connects the sample connection of the differential pressure sampling and measuring instrument of this valve place symmetric position.
A kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, its feature: three valve groups, symmetrical two T-valve; The feedback flap of T-valve is that the input channel of flap passage and two other interface and output channel are closed at the state of valve open.
A kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, its feature: the state at valve closing is that the flap passage is to communicate with the output terminal interface channel of T-valve.
A kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument; its feature: three valve groups, symmetrical two T-valve, the feedback flap of T-valve; state at valve closing is, the flap passage is with the input end interface passage closure of T-valve.
Advantage of the present invention is: every, and application differential pressure method, measuring channel flow, tank level, the pressure loss, adopt the said structure method, as forming measuring system, installing in correct situation, no matter is the Operational errors what factor causes,
Can not cause the damage of differential pressure sampling and measuring instrument, guarantee the safety of differential pressure measurement system.
The accompanying drawing explanation
:
Accompanying drawing is structural representation of the present invention; It is also embodiment of the present invention schematic diagram.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing,
at first the relation of figure number and component names is described: pressure generation systems 1, differential pressure sampling and measuring instrument 2, pressure generation systems high-pressure mouth 3, pressure generation systems low pressure port 4, pipeline 5, pipeline 6, T-valve low 7, T-valve is high by 8, pipeline 9, pipeline 10, threeway 1 joint low 11, threeway 1 joint is high by 12, pipeline 13, pipeline 14, balance two-way valve 15, pipeline 16, pipeline 17, pipeline 18, pipeline 19, threeway 2 joints low 20, threeway 2 joints are high by 21, pipeline 22, pipeline 23, differential pressure sampling and measuring instrument hangs down sample tap 24, the high sample tap 25 of differential pressure sampling and measuring instrument, feedback flap 26, feedback flap 27.
Annotate: the interface two ends of balance two-way valve 15 institute is symmetrical to be connected, and T-valve hangs down 7, the interface of T-valve high 8, flap and inner passage relation and interface direction relations:
T-valve low 7:
What 1) interface was connected with pipeline 6 is input interface; What 2) interface was connected with pipeline 10 is output interface; What 3) feedback flap 26 was connected with pipeline 16 is feedback interface.
T-valve is high by 8:
What 1) interface was connected with pipeline 5 is input interface; What 2) interface was connected with pipeline 9 is output interface; What 3) feedback flap 26 was connected with pipeline 17 is feedback interface.
Embodiment:
As shown in the figure:
A kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, by the pressure generation systems high-pressure mouth 3 that pressure generation systems 1 is drawn, 4 two media outlets of pressure generation systems low pressure port, the interface of, T-valve low 7 high by 8 by pipeline 5, pipeline 6 connecting tee valves; T-valve is high by 8, the other end of T-valve low 7 passes through pipeline 9, pipeline 10, and connecting tee 1 joint is high by 12, threeway 1 joint low 11; Threeway 1 joint is high by 12, threeway 1 joint low 11,, threeway 2 joints high by 21 by pipeline connecting tee 2 joints are low by 20, threeway 2 joints low 20, by pipeline 22, pipeline 23, be connected to two sample taps of differential pressure sampling and measuring instrument 2: the high sample tap 25 of differential pressure sampling and measuring instrument, the low sample tap 24 of differential pressure sampling and measuring instrument.
Two end interfaces of balance two-way valve 15, by pipeline 13, pipeline 14 be connected respectively to that threeway 1 joint is high by 12, on the joint of threeway 1 joint low 11.
T-valve is high by 8, the feedback flap 27 of T-valve low 7, feedback flap 26 be by pipeline 17, pipeline 16, is connected to the interface of threeway 2 joints low 20 and threeway 2 joints high 21; Form.
During certain link differential pressure of gaging pressure generation systems 1, under regular situation, all valves of accompanying drawing measuring system are all closed;
Correct method of operating is:
1) open balance two-way valve 15;
2) open that T-valve is low by 7, T-valve is high by 8;
3) observe zero point or the zeroising of differential pressure sampling and measuring instrument 2;
4) close balance two-way valve 15, pressure generation systems high- pressure mouth 3,4 two media outlets of pressure generation systems low pressure port that on-the-spot pressure generation systems 1 is drawn, be transported to the pressure medium signal by pipeline sample tap 24 at the bottom of the high sample tap 25 of differential pressure sampling and measuring instrument, differential pressure sampling and measuring instrument of differential pressure sampling and measuring instrument 2;
5) end operation.
If execute-in-place is improper wrong:
The first situation, close in balance two-way valve 15 situations;
Opened T-valve low 7; Closed T-valve high by 8, at this moment: pressure medium enters pipeline 6 by pressure generation systems low pressure port 4, by pipeline 6, enters low 7 input ends of T-valve, at this moment, and feedback flap 26 pathway closures of T-valve low 7; T-valve hangs down 7 another interfaces, and by pipeline 10, connecting tee 1 joint is low by 11, and threeway 1 joint low 11, by pipeline 19, is connected to threeway 2 joints low by 20, and threeway 2 joints low 20 are connected to the low sample tap 24 of differential pressure sampling and measuring instrument by pipeline 23.
The pressure medium signal is in low 20 processes through threeway 2 joints, the interface of the connecting tube 17 of threeway 2 joints low 20, by pipeline 17, the pressure signal of medium is transferred to to have closed T-valve high by 8, the passage of the feedback flap 28 of T-valve high 8 and pipeline 17 and pipeline 9 UNICOMs; Feedback flap 27, by the pressure medium signal, is fetched from pipeline 17, and, pipeline 18 high by 12 through pipeline 9, threeway 1 joint, threeway 2 joints are high by 21, pipeline 22 is to the high sample tap 25 of differential pressure sampling and measuring instrument.
In this condition situation, the high sample tap 25 of differential pressure sampling and measuring instrument, the low sample tap 24 of differential pressure sampling and measuring instrument, accept same pressure signal simultaneously, and its differential pressure value is zero.
The second situation, close in balance two-way valve 15 situations;
Opened, T-valve is high by 8; Closed T-valve low 7;
At this moment: pressure medium enters pipeline 5 by pressure generation systems high-pressure mouth 3, by pipeline 5, is entered the input end of T-valve high 8, at this moment, and feedback flap 27 pathway closures of T-valve high 8; T-valve high 8 another interfaces, the pressure medium signal is high by 12 by threeway 1 joint that pipeline 9 connects, threeway 1 joint high 12, by pipeline 18, is connected to threeway 2 joints high by 21, and threeway 2 joints high 21 are connected to the high sample tap 25 of differential pressure sampling and measuring instrument by pipeline 22.
The pressure medium signal is in through high 21 processes of threeway 2 joints, threeway 2 joints are high by 21, by the interface of connecting tube 16, by pipeline 16, the pressure signal of medium is transferred to and has closed at the bottom of T-valve 7, the passage of 7 feedback flap 26 and pipeline 16 and pipeline 10 UNICOMs at the bottom of T-valve; Feedback flap 26, by the pressure medium signal, is fetched from pipeline 16, and, pipeline 19 low by 11 through pipeline 10, threeway 1 joint, threeway 2 joints are low by 20, pipeline 23 is to the high sample tap 24 of differential pressure sampling and measuring instrument.
In this condition situation, the high sample tap 25 of differential pressure sampling and measuring instrument, the low sample tap 24 of differential pressure sampling and measuring instrument, accept same pressure signal simultaneously, and its differential pressure value is zero.
Above-mentioned two situations, under the installation combined situation of tradition application three valve groups and pressure generation systems and differential pressure protection differential pressure sampling and measuring instrument, can cause the damage of differential pressure sampling and measuring instrument; And; the next problem that there is no damage of installation combined situation of three valve groups and pressure generation systems and differential pressure protection differential pressure sampling and measuring instrument; when differential pressure sampling and measuring instrument is total, show zero, according to above-mentioned correct method of operating, correct so, systematic survey is just normal.
Claims (4)
1. the mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, by: pressure generation systems, three valve groups, differential pressure sampling and measuring instrument, three ingredients form, its feature: three valve groups, intervening vaive is that the two ends three-way connection of two-way valve two-way valve connects, the T-valve that has connected two identical symmetries, two other interface of T-valve: one is Bonding pressure generation systems sample tap; One as maloperation feedback use, pass through connecting tube, the connecting tee joint, the another two ends of three-way connection, an end connects the sample connection of the differential pressure sampling and measuring instrument of this valve position: an end connects the sample connection of the differential pressure sampling and measuring instrument of this valve place symmetric position.
2. according to claim 1, a kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, its feature: three valve groups, symmetrical two T-valve; The feedback flap of T-valve is that the input channel of flap passage and two other interface and output channel are closed at the state of valve open.
3. according to claim 1, a kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument, its feature: the state at valve closing is that the flap passage is to communicate with the output terminal interface channel of T-valve.
4. according to claim 1; a kind of mechanism of gaging pressure generation systems differential pressure protection differential pressure sampling and measuring instrument; its feature: three valve groups; symmetrical two T-valve; the feedback flap of T-valve; state at valve closing is, the flap passage is with the input end interface passage closure of T-valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205949207U CN203298924U (en) | 2012-11-13 | 2012-11-13 | Mechanism for protecting micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement |
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| CN2012205949207U CN203298924U (en) | 2012-11-13 | 2012-11-13 | Mechanism for protecting micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement |
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| CN203298924U true CN203298924U (en) | 2013-11-20 |
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| CN2012205949207U Expired - Lifetime CN203298924U (en) | 2012-11-13 | 2012-11-13 | Mechanism for protecting micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808449A (en) * | 2012-11-13 | 2014-05-21 | 北京华德创业环保设备有限公司 | Mechanism for measuring micro differential pressure of pressure generation system and protecting micro differential pressure sampling measuring instrument |
-
2012
- 2012-11-13 CN CN2012205949207U patent/CN203298924U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808449A (en) * | 2012-11-13 | 2014-05-21 | 北京华德创业环保设备有限公司 | Mechanism for measuring micro differential pressure of pressure generation system and protecting micro differential pressure sampling measuring instrument |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160223 Address after: The 053700 industrial zones Fucheng County of Hebei Province Patentee after: Hebei mining equipment Co.,Ltd. Hua Hua Address before: 100020, Chaoyang Avenue, Beijing, No. 18, Feng Lian square, block B, 10, 1015 Patentee before: BEIJING HUADE CREATION ENVIRONMENTAL PROTECTION EQUIPMENT CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |