CN212779396U - Double-differential pressure type V-cone flowmeter - Google Patents
Double-differential pressure type V-cone flowmeter Download PDFInfo
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- CN212779396U CN212779396U CN202022073552.9U CN202022073552U CN212779396U CN 212779396 U CN212779396 U CN 212779396U CN 202022073552 U CN202022073552 U CN 202022073552U CN 212779396 U CN212779396 U CN 212779396U
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Abstract
The utility model discloses a double differential pressure type V awl flowmeter, including the table body, the fixed inserting of upper surface of the table body is equipped with positive pressure-taking pipe, one side that the upper surface of the table body kept away from positive pressure-taking pipe has fixedly seted up the mounting hole, the activity is equipped with negative pressure-taking pipe on the mounting hole, the bottom of negative pressure-taking pipe is located the table body and runs through fixedly being equipped with communicating pipe, fixed cover is equipped with V type cone on the communicating pipe, the top of positive pressure-taking pipe and the top of negative pressure-taking pipe all are connected with the pressure-taking pipe through universal nut, pressure-taking pipe top fixedly connected with three groups of valves, the top one end of three groups of valves has high differential pressure transmitter through threaded connection, the top other end of three groups of valves has; the utility model provides a design of two differential pressure transmitter has solved the not enough of V awl flowmeter existence in measurement steam trade settlement, has enlarged the problem of range scope to installation and change to the V type cone are convenient through connecting plate and fixture block.
Description
Technical Field
The utility model relates to a V awl flowmeter technical field specifically is a double differential pressure type V awl flowmeter.
Background
V-cone flowmeters, also known as V-cone flowmeters; a V-cone flow meter; a V-cone flow meter; a cone-type flow meter; a conical flow meter; an inner cone flow meter; the inner cone type flowmeter, the integrated V cone flowmeter is a differential pressure flowmeter developed in the 80 s of the 20 th century, the development success of the differential pressure flowmeter is a qualitative leap of differential pressure flow measurement, the differential pressure flowmeter utilizes the throttling effect generated by a V cone in a flow field, the flow is measured by detecting the pressure difference between the upstream and the downstream, compared with the common throttling element, the throttling layout is changed, the throttling from the central hole is changed into the annular throttling, along with the rapid development of the scientific technology, the double-differential-pressure V-cone flowmeter is also technically improved, in the prior art, however, the V-cone flowmeter has the defects in metering steam trade settlement, the measuring range is expanded, in addition, the V-shaped cone is easy to block and damage in the using process, but the existing V-cone flowmeter cannot replace the V-shaped cone, so that a double differential pressure type V-cone flowmeter is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two differential pressure type V awl flowmeters to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a double-differential pressure type V-cone flowmeter comprises a meter body, wherein a positive pressure-taking pipe is fixedly inserted in the upper surface of the meter body, a mounting hole is fixedly formed in one side, away from the positive pressure-taking pipe, of the upper surface of the meter body, a negative pressure-taking pipe is movably arranged on the mounting hole, the bottom of the negative pressure-taking pipe is positioned in the meter body and fixedly communicated with a communicating pipe in a penetrating manner, and a V-shaped cone is fixedly sleeved on the communicating pipe;
the pressure measuring device comprises a positive pressure measuring pipe, a negative pressure measuring pipe, a high differential pressure transmitter, a low differential pressure transmitter and a pressure measuring pipe, wherein the top of the positive pressure measuring pipe and the top of the negative pressure measuring pipe are both connected with the pressure measuring pipe through universal nuts, the top of the pressure measuring pipe is fixedly connected with three groups of valves, one end of the top of each group of valves is connected with the high differential pressure transmitter through threads, and the other end of.
As an optimized technical scheme of the utility model, the equal symmetry in both ends of the table body is equipped with flange.
As a preferred technical scheme of the utility model, the fixed a plurality of high pressure welded valves that are equipped with on the three group's valves, high pressure welded valve quantity is three, and corresponds the valve port of three group's valves left and right ends and bottom respectively.
As a preferred technical scheme of the utility model, the top sliding sleeve of negative pressure pipe is equipped with the connecting plate, the fixed cover in below that the negative pressure was pressed and is located the connecting plate is equipped with the fixture block, be equipped with the draw-in groove that uses with the fixture block cooperation on the mounting hole table body all around, the fixed sealed pad that is equipped with in bottom of draw-in groove.
As a preferred technical scheme of the utility model, the one end vertical fixation that the negative pressure pipe was got to communicating pipe is equipped with the bracing piece, the top of bracing piece and the bottom fixed connection of fixture block.
As an optimal technical scheme of the utility model, the connecting plate carries out fixed connection through a plurality of screws and the surface of the table body.
As a preferred technical scheme of the utility model, the fixed a plurality of sleeves that are equipped with of bottom symmetry of connecting plate, the top of fixture block is equipped with the slot that uses with the sleeve cooperation, and the sleeve slides and inserts and establish in the slot, the fixed pressure spring that is equipped with in bottom of slot, and the pressure spring keeps away from the one end of slot and the inboard fixed connection in telescopic top.
As an optimal technical scheme of the utility model, the fixed spacing ring that is equipped with on the sleeve, be equipped with the spacing groove that uses with the spacing ring cooperation on the slot.
Compared with the prior art, the beneficial effects of the utility model are that:
1. under the command of the high differential pressure transmitter, the low differential pressure transmitter and the intelligent secondary meter, the automatic switching and the mutual cooperation are carried out, the flow range is within the range of 5 to 100 percent,
the flow precision can reach 1%, the measurable flow range can reach 1:20, and the beneficial effect of increasing the narrow measuring range of the V-cone flowmeter is achieved.
2. The V-shaped cone is convenient to install and replace through the connecting plate and the clamping block, and the sealing performance between the clamping block and the clamping groove can be improved by utilizing the mutual matching of the pressure spring and the sealing gasket.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the middle watch body of the present invention;
fig. 3 is the schematic view of the connection structure of the middle connection plate and the fixture block of the present invention.
In the figure: 1. a watch body; 2. a positive pressure tapping pipe; 3. mounting holes; 4. a negative pressure tapping pipe; 41. a connecting plate; 411. a screw; 412. a sleeve; 413. a limiting ring; 42. a clamping block; 421. a slot; 422. a pressure spring; 423. a limiting groove; 43. a card slot; 44. a gasket; 5. a communicating pipe; 51. a support bar; 6. a V-shaped cone; 7. a universal nut; 8. a pressure tapping conduit; 9. three groups of valves; 10. a high differential pressure transmitter; 11. a low differential pressure transmitter; 12. a connecting flange; 13. high pressure welding valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a two differential pressure type V awl flowmeters, includes the table body 1, the fixed surface of the table body 1 inserts and is equipped with positive pressure-tapping pipe 2, and the fixed mounting hole 3 of having seted up in one side that positive pressure-tapping pipe 2 was kept away from to the upper surface of the table body 1, and the activity is equipped with negative pressure-tapping pipe 4 on the mounting hole 3, and the bottom of negative pressure-tapping pipe 4 is located the table body 1 and runs through fixedly and be equipped with communicating pipe 5, and fixed cover is equipped with V type cone 6 on communicating pipe 5, and V type cone 6 is the effectual formation pressure differential of toper tower form ability.
The top of the positive pressure taking pipe 2 and the top of the negative pressure taking pipe 4 are both connected with a pressure taking guide pipe 8 through universal nuts 7, the pressure taking guide pipe 8 is 20cm long and 2cm in diameter and can effectively transport liquid, three groups of valves 9 are fixedly connected to the top of the pressure taking guide pipe 8, one ends of the tops of the three groups of valves 9 are connected with a high differential pressure transmitter 10 through threads, the high differential pressure transmitter 10 is LT-180 in type 181305, the detection precision is high, the reaction is sensitive, the other ends of the tops of the three groups of valves 9 are connected with a low differential pressure transmitter 11 through threads, the low differential pressure transmitter 11 is 3051 in type, the detection precision is high, and the reaction is sensitive.
The both ends of table body 1 all are equipped with flange 12 symmetrically, and flange 12 is favorable to table body 1 and pipeline to be connected, the liquid circulation of being convenient for.
Three group's valves 9 are gone up to be fixed and are equipped with a plurality of high pressure welded valves 13, and high pressure welded valve 13 quantity is three, and corresponds the valve port of both ends and bottom about three group's valves 9 respectively, and three group's valves 9 can effectual diversified control liquid's of diversified control business turn over through three high pressure welded valve 13.
The top end of the negative pressure tapping pipe 4 is slidably sleeved with a connecting plate 41, a fixture block 42 is fixedly sleeved on the negative pressure tapping pipe 4 below the connecting plate 41, a clamping groove 43 matched with the fixture block 42 is arranged on the watch body 1 around the mounting hole 3, a sealing gasket 44 is fixedly arranged at the bottom of the clamping groove 43, the connecting plate 41 is fixedly connected with the surface of the watch body 1 through a plurality of screws 411, a plurality of sleeves 412 are symmetrically and fixedly arranged at the bottom of the connecting plate 41, a slot 421 matched with the sleeve 412 is arranged at the top of the fixture block 42, the sleeve 412 is slidably inserted in the slot 421, a pressure spring 422 is fixedly arranged at the bottom of the slot 421, one end of the pressure spring 422 far away from the slot 421 is fixedly connected with the inner side of the top of the sleeve 412, the connecting plate 41 moves downwards on the negative pressure tapping pipe 4 and is fixed on the surface of the watch body 1 through a plurality, because the connecting plate 41 is fixed on the surface of the watch body 1, the compression spring 422 downwards extrudes the fixture block 42, the fixture block 42 moves downwards on the connecting plate 41 along with the negative pressure sampling pipe 4, and therefore the bottom of the fixture block 42 is extruded and attached to the sealing gasket 44 on the surface of the clamping groove 43, and the sealing effect is improved.
The one end of communicating pipe 5 that keeps away from negative pressure pipe 4 is the fixed bracing piece 51 that is equipped with perpendicularly, and the top of bracing piece 51 and the bottom fixed connection of fixture block 42 can make communicating pipe 5 and fixture block 42 fix through bracing piece 51, have improved the stability of V type cone 6 on communicating pipe 5, make it can not take place the skew when receiving liquid impact.
The sleeve 412 is fixedly provided with a limit ring 413, and the slot 421 is provided with a limit groove 423 and a limit ring 413 matched with the limit ring 413 to prevent the sleeve 412 from separating from the slot 421, so that the connecting plate 41 cannot separate from the negative pressure sampling pipe 4.
The working principle is as follows: the utility model discloses when using, when liquid is full of in the table body 1, through 6 formation pressure differentials of V type cone, dredge through getting pressure pipe 8, detect pressure differential by high differential pressure transmitter 10 and low differential pressure transmitter 11 again, calculate the range, when high differential pressure transmitter 10 and low differential pressure transmitter 11 calculate, the conversion formula of two differential pressure measuring errors to the influence of flow has two, formula one
Formula two
Wherein, the delta P is the differential pressure measuring range Qm which is the corresponding maximum flow value and is obtained by a formula II, the delta Qm is the difference value between the changed flow value and the maximum flow value, the delta P is the difference value between the changed differential pressure value and the differential pressure measuring range,
in order to be able to measure the flow uncertainty,
for differential pressure uncertainty, when the accuracy rating of the differential pressure transmitter is 0.075 rating, at 100% fs (full scale) Δ P,
when Δ P is 3.75% FS,
as can be seen from equation 1, when Δ P is 3.75% FS, the influence on the uncertainty of the flow is 1%, that is, the accuracy of obtaining ± 1% flow measurement (uncertainty of the flow) is obtained, if a differential pressure transmitter with an accuracy grade of 0.075 is selected, the accuracy can be ensured only when the differential pressure is greater than 3.75% FS, that is, the flow is greater than 19.36% FSThe design provides the design of the high differential pressure transmitter 10 and the low differential pressure transmitter 11, solves the problems of the V-cone flowmeter in metering steam trade settlement and expanding the range, under the command of the high differential pressure transmitter 10 and the low differential pressure transmitter 11 and the intelligent secondary meter, the automatic switching and the mutual cooperation are carried out, the flow range is within the range of 5 to 100 percent,
the flow precision can reach 1 percent, the measurable flow range can reach 1:20, the narrow beneficial effect of increasing the measuring range of the V-cone flowmeter is achieved, when the V-cone 6 is blocked or damaged, the negative pressure taking tube 4 is separated from the pressure taking guide tube 8 through the universal nut 7, the screw 411 on the surface of the connecting plate 41 and the surface of the meter body 1 is detached, the negative pressure taking tube 4 is held and lifted upwards, the V-cone 6 can be taken out from the meter body 1 through the mounting hole 3 for replacement, the interior of the meter body 1 can also be cleaned, after a new V-cone 6 is mounted, the fixture block 42 is clamped in the clamping groove 43, the connecting plate 41 moves downwards on the negative pressure taking tube 4 to be attached to the surface of the meter body 1 and fixed on the meter body 1 through a plurality of screws 411, the connecting plate 41 extrudes the pressure spring 422 in the slot 421 through the sleeve 412 at the bottom, and as the connecting plate 41 is fixed on the surface of the meter body, the compression spring 422 is enabled to downwards extrude the fixture block 42, the fixture block 42 moves downwards on the connecting plate 41 along with the negative pressure tapping pipe 4, and therefore the bottom of the fixture block 42 is extruded and attached to the sealing gasket 44 on the surface of the clamping groove 43, and the sealing effect is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a two differential pressure type V awl flowmeters, includes table body (1), its characterized in that: a positive pressure pipe (2) is fixedly inserted into the upper surface of the meter body (1), a mounting hole (3) is fixedly formed in one side, away from the positive pressure pipe (2), of the upper surface of the meter body (1), a negative pressure pipe (4) is movably arranged on the mounting hole (3), a communicating pipe (5) is fixedly arranged at the bottom of the negative pressure pipe (4) in the meter body (1) in a penetrating mode, and a V-shaped cone (6) is fixedly sleeved on the communicating pipe (5);
the top of positive pressure pipe (2) and the top of negative pressure pipe (4) all are connected with through universal nut (7) and get and press pipe (8), get three group valve (9) of pressure pipe (8) top fixedly connected with, the top one end of three group valve (9) has high differential pressure transmitter (10) through threaded connection, the top other end of three group valve (9) has low differential pressure transmitter (11) through threaded connection.
2. The double differential pressure type V-cone flowmeter according to claim 1, wherein: and the two ends of the watch body (1) are symmetrically provided with connecting flanges (12).
3. The double differential pressure type V-cone flowmeter according to claim 1, wherein: the three groups of valves (9) are fixedly provided with a plurality of high-pressure welding valves (13), the number of the high-pressure welding valves (13) is three, and the high-pressure welding valves correspond to the valve ports at the left end, the right end and the bottom end of the three groups of valves (9) respectively.
4. The double differential pressure type V-cone flowmeter according to claim 1, wherein: the utility model discloses a pressure measuring instrument, including negative pressure pipe (4), connecting plate (41) are equipped with to the top sliding sleeve of negative pressure pipe (4), the fixed cover in below that lies in connecting plate (41) on negative pressure pipe (4) is equipped with fixture block (42), be equipped with on mounting hole (3) table body (1) all around draw-in groove (43) that use with fixture block (42) cooperation, the fixed sealed pad (44) that is equipped with in bottom of draw-in groove (43).
5. The double differential pressure type V-cone flowmeter according to claim 1, wherein: and a supporting rod (51) is vertically and fixedly arranged at one end, away from the negative pressure tapping pipe (4), of the communicating pipe (5), and the top of the supporting rod (51) is fixedly connected with the bottom of the clamping block (42).
6. The double differential pressure type V-cone flowmeter according to claim 4, wherein: the connecting plate (41) is fixedly connected with the surface of the watch body (1) through a plurality of screws (411).
7. The double differential pressure type V-cone flowmeter according to claim 4, wherein: the bottom symmetry of connecting plate (41) is fixed to be equipped with a plurality of sleeves (412), the top of fixture block (42) is equipped with slot (421) that use with sleeve (412) cooperation, and sleeve (412) slip insert establish in slot (421), the bottom of slot (421) is fixed to be equipped with pressure spring (422), and one end that slot (421) were kept away from in pressure spring (422) and the inboard fixed connection in top of sleeve (412).
8. The double differential pressure type V-cone flowmeter according to claim 7, wherein: the sleeve (412) is fixedly provided with a limiting ring (413), and the slot (421) is provided with a limiting groove (423) matched with the limiting ring (413).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022073552.9U CN212779396U (en) | 2020-09-18 | 2020-09-18 | Double-differential pressure type V-cone flowmeter |
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| CN202022073552.9U CN212779396U (en) | 2020-09-18 | 2020-09-18 | Double-differential pressure type V-cone flowmeter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116295699A (en) * | 2023-05-12 | 2023-06-23 | 山东立轩测控设备有限公司 | Plug-in V-cone flowmeter mounting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116295699A (en) * | 2023-05-12 | 2023-06-23 | 山东立轩测控设备有限公司 | Plug-in V-cone flowmeter mounting structure |
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