CN204128604U - A kind of Ovshinsky T clings to flowmeter - Google Patents
A kind of Ovshinsky T clings to flowmeter Download PDFInfo
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- CN204128604U CN204128604U CN201420496956.0U CN201420496956U CN204128604U CN 204128604 U CN204128604 U CN 204128604U CN 201420496956 U CN201420496956 U CN 201420496956U CN 204128604 U CN204128604 U CN 204128604U
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- flowmeter
- flow sensor
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- ovshinsky
- pressure
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Abstract
The utility model discloses a kind of bar class flowmeter----Ovshinsky T clings to flowmeter, belongs to thermal meter field.The utility model comprises by the special-shaped barred body that processes of casting steel or stainless steel as flow sensor, Sealed casing pipe and fabricated section; It is characterized in that flow sensor entirety is the special-shaped barred body of " T " font, the xsect of flow sensor is also " T " font, inner with temperature sensor, can realize the detection of pressure reduction, pressure, temperature.The beneficial effects of the utility model are: have rational in infrastructure, safe and reliable, measure the advantages such as relatively accurate, pressure resistance, life-span be long, be to large diameter pipeline, high pressure, must the mend gene that detects of the rate-of flow of temperature and pressure compensation.
Description
Technical field
The utility model relates to a kind of bar class flowmeter---and-Ovshinsky T clings to flowmeter, belongs to thermal meter field.
Background technology
A lot of in the differential pressure type bar class instrument kind of application at present, as even speed tube, Verabar, Delta clings to, finish and drag bar, aciculiform etc., number of applications is seen based on mean velocity tube flowmeter, it respectively has feature, range ratio is large (being greater than 10: 1) also, but because the shape of its flow sensor is (circular, bullet-headed, pointed etc.) determine that its resistance is little, friction force is little, and the pressure reduction produced is just little, its supporting differential pressure transmitter needs high-precision differential pressure transmitter, when technological process needs fluctuations in discharge than time large, just its signal cannot be detected when low discharge.As DN=1200mm, t=180 DEG C, pressure P=10KPa, flow Q=60000,35000,9000Nm
3when air mass flow during/h detects, its pressure reduction too little (Δ P≤200Pa) exported, counts the corresponding 60000Nm of range of differential pressure transmitter with 200Pa
3/ h, then at 9000Nm
3during/h, corresponding Δ P is 18Pa, does not almost have satiable poor change to detect it, moreover at lower limit place, the precision that elementary errors becomes reduces also a lot.And standard throttle apparatus (orifice plate, nozzle, venturi) can produce larger differential pressure (Δ P >=1K Pa), owing to being full packages throttling installation, its resistance is large, crushing is large, need the straight length grown very much, and scene generally cannot meet, also very high for its price bigbore.Due to its design feature, size sensor is also less, also cannot detect the temperature of measured medium.
Under current state, its shortcoming of bar class instrument is that the pressure reduction produced is too little, and advantage is low price, easy for installation.
Summary of the invention
The purpose of this utility model is: provide a kind of rational in infrastructure, resistance is relatively little, can produce larger differential pressure, measure one relatively accurate, easy for installation bar class flowmeter.
In order to overcome the defect existed in background technology, the technical scheme that the utility model provides is: a kind of Ovshinsky T clings to flowmeter (calling flowmeter in the following text), comprises the special-shaped barred body that processed by a casting steel or stainless steel as flow sensor, Sealed casing pipe and fabricated section; It is characterized in that flow sensor entirety is the special-shaped barred body of " T " font, the xsect of flow sensor is also " T " font, inner with temperature sensor.
Described special-shaped barred body is as flow sensor, make with casting or mach mode, whole barred body is " T " font, xsect is also " T " font, facade, xsect are " T " font, form a barred body of standing like the legs of a tripod, form compression-resistant structure, high-pressure medium flow can be detected; Facade is seen, the top of " T " font is in face of media flow direction, and when media impingement, fluid is shunted to both sides, and forms whirlpool (having certain vacuum tightness) at its back, thus in its front, the back side forms larger pressure differential; Because flow sensor inserts pipe interior, non-current floe condition, resistance is less than standard throttle apparatus, and crushing is also relatively little, and pressure reduction is comparatively large (being compared to circle, the bar class sensor such as bullet-headed, pointed) also.Open respectively in relative duct size center positive and negative pressure tappings (when flow sensor is inserted entirely at it near center, half when inserting close to its head position, that is this flowmeter has complete inserting and installs, half inserts the structure of installing); The malleation pressure tappings of (i.e. the top of xsect " T " font) face reserved (or processing) " I " font is flowed in face of medium at flow sensor, at sensor internal reserved (or processing) cylindrical cavity (being connected with malleation pressure tappings) as plemum, then cause sensor external at sensor internal reserved (or processing) thinner passage, be convenient to connect difference and become anode (and pressure becomes); (or processing) two negative pressure pressure ports and small column chamber negative pressure chamber are reserved respectively at the two ends, back of flow sensor (i.e. xsect " T " font top), (or processing) cylindrical cavity (being communicated with Liang Ge little negative pressure chamber) reserved after plemum is as negative pressure chamber simultaneously, then cause sensor external at sensor internal reserved (or processing) thinner passage, be convenient to connect difference and become negative terminal; Negative pressure pressure port adopts two, plays the effect of balance, and namely balanced flow sensor itself is uneven, and equilibrium velocity is uneven again; Positive and negative pressure chamber is adopted to fluctuate by equilibrium velocity; Reserved at the back side (i.e. the bottom of xsect " T " font) of flow sensor (or processing) thermometer hole, one temperature sensor is installed, in flow sensor barred body, a thermal sleeve is installed, temperature signal is caused sensor external, is convenient to connect difference and becomes (during with multivariable differential pressure transmitter) or temperature transmitter; Now the positive/negative-pressure mouth of flow sensor, temperature detection have made complete, and when detecting rate-of flow and needing temperature and pressure compensation, pipeline does not just need perforate again, and pressure obtains by malleation mouth; Then only need this flowmeter just can carry out the flow detection of temperature and pressure compensation with multivariable differential pressure transmitter, when becoming by single argument difference, must add that a pressure becomes, a temperature change can realize.
Described Sealed casing pipe, is the stainless-steel tube with meeting measured medium characteristic (as burn into viscosity, pressure, temperature) and requiring, because sensor itself is the special-shaped barred body of one " T " font, welds, leakiness with bad during Pipe installing.Then overlapping on a sensor with tube contacts position stainless-steel tube, between sensor and stainless-steel tube, filling oxide, then shuts, and realizes sealing, and namely the installation sealing of flowmeter adopts Sealed casing pipe.
Described fabricated section, available flange, also using nuts; Weld together with Sealed casing pipe.On pipeline, weld a flange connecting pipe in advance when installing with flange, two flanges docking are fixing.When installing with nut, pipeline welds a threaded steel pipe in advance, tightens and can complete installation.
Its benefit of Sealed casing pipe is adopted also to be, when technological process requires to continue to flow replacing flow sensor, the ball valve that the upper installation internal diameter of the flange connecting pipe (or steel pipe) that can weld on process pipe is identical with Sealed casing pipe external diameter, when a sensor is replaced sensor is extracted out, valve-off, ensures to produce and continues; Open ball valve when installing again, sensor is inserted, then fix and can complete.
The utility model solves the defect existed in background technology.Have rational in infrastructure, safe and reliable, measure the advantages such as relatively accurate, pressure resistance, life-span be long, be to large diameter pipeline, high pressure, must the mend gene that detects of the rate-of flow of temperature and pressure compensation.
Accompanying drawing explanation
Fig. 1 is that a kind of Ovshinsky T clings to flowmeter structure schematic diagram;
Fig. 2 is that a kind of Ovshinsky T clings to flowmeter A-A diagrammatic cross-section;
Fig. 3 is the schematic diagram that a kind of Ovshinsky T clings to flowmeter B-B section.
Embodiment
(by flange mounting means, half inserting structure, forging type processing) and embodiment are described in further detail the utility model now by reference to the accompanying drawings.Shown accompanying drawing is the schematic diagram of simplification, and only basic structure of the present utility model is described in a schematic way, therefore it only shows the formation relevant with the utility model.
Embodiment 1, as shown in Figure 1, Figure 2, Figure 3 shows.
In Fig. 1, Fig. 2, Fig. 3, (1) is the flow sensor of special-shaped barred body, is cast or in advance design software is made by machine work by prior designing mould; (2) be the malleation pressure tappings of " I " font, (3) are plemums, and (4) are malleation impulse passages.(5) be negative pressure chamber, (6) be negative pressure impulse passage, (7) be temperature sensor, (8) be thermal sleeve, include temperature sensor wires, (9) be mounting flange, (10) be Sealed casing pipe, (11) be the valve of positive/negative-pressure expanding channels to transmitter (12), (14) be negative pressure taking source pressure mouth, (13) be the little negative pressure chamber of negative pressure pressure tappings (14), (15) Shi Liangge little negative pressure chamber (13) causes the passage of negative pressure chamber (5), (16) be filling material between flow sensor (1) and Sealed casing pipe (10).First each entity module is made with founding material: malleation pressure tappings (2), negative pressure pressure tappings (14), Liang Ge little negative pressure chamber (13) causes the passage (15) of negative pressure chamber (5), malleation impulse passage (4), negative pressure impulse passage (6), thermal sleeve (8) passage, plemum (3) is processed respectively with the material of material again with flow sensor (1), negative pressure chamber (5), Liang Ge little negative pressure chamber (13), the cavity of temperature sensor (7), by them according to illustrated sequential combination together mould in aggregates, then by its size, measured medium pressure, state of temperature, design its flow sensor (1) shell size, unitary mould is put into, casting, shaping, remove each founding part, machine work, temperature sensor (7) is put into fixing along the passage of thermal sleeve (8), put thermal sleeve (8), Sealed casing pipe (10) is enclosed within flow sensor (1), with mounting flange (9) shutoff, fill oxide (16) between Sealed casing pipe (10) and flow sensor (1), then welding shutoff is carried out with a steel plate, Sealed casing pipe (10) and mounting flange (9) are welded together, the utility model is implemented complete substantially simultaneously.During in-site installation, become by flowmeter by valve (11) with difference, press to become and be connected, temperature sensor is connected to warm change, enforcement in-site measurement.
Claims (8)
1. an Ovshinsky T clings to flowmeter and comprises the special-shaped barred body that processed by a casting steel or stainless steel as flow sensor, Sealed casing pipe and fabricated section; It is characterized in that:
1. flow sensor entirety is the special-shaped barred body of " T " font;
2. the xsect of flow sensor is also " T " font;
3. flow sensor is inner with temperature sensor.
2. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, it is characterized in that flow sensor is the barred body of standing like the legs of a tripod, has compression-resistant structure.
3. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, it is characterized in that flowmeter has complete slotting installation, half and inserts the structure of installing.
4. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, and it is characterized in that the malleation pressure tappings of flow sensor is for " I " font, its plemum is a cylindrical cavity.
5. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, it is characterized in that flow sensor has two negative pressure pressure ports (14) and small column chamber negative pressure chamber (13), after plemum, reserve a cylindrical cavity as negative pressure chamber (5) simultaneously.
6. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, it is characterized in that the installation sealing of flow sensor adopts Sealed casing pipe.
7. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, it is characterized in that the fabricated section of flowmeter is flange or nut.
8. a kind of Ovshinsky T as claimed in claim 1 clings to flowmeter, it is characterized in that there is a thermal sleeve in flow sensor barred body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496956.0U CN204128604U (en) | 2014-08-25 | 2014-08-25 | A kind of Ovshinsky T clings to flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496956.0U CN204128604U (en) | 2014-08-25 | 2014-08-25 | A kind of Ovshinsky T clings to flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204128604U true CN204128604U (en) | 2015-01-28 |
Family
ID=52384952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420496956.0U Expired - Fee Related CN204128604U (en) | 2014-08-25 | 2014-08-25 | A kind of Ovshinsky T clings to flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204128604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806423A (en) * | 2016-03-09 | 2016-07-27 | 宁波钢铁有限公司 | Large-diameter low-pressure fouling gas flow measurement throttling device |
-
2014
- 2014-08-25 CN CN201420496956.0U patent/CN204128604U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806423A (en) * | 2016-03-09 | 2016-07-27 | 宁波钢铁有限公司 | Large-diameter low-pressure fouling gas flow measurement throttling device |
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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: 20150128 Termination date: 20160825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |