CN208704808U - The dedicated Cone Flowmeter of coal gas - Google Patents
The dedicated Cone Flowmeter of coal gas Download PDFInfo
- Publication number
- CN208704808U CN208704808U CN201821614830.3U CN201821614830U CN208704808U CN 208704808 U CN208704808 U CN 208704808U CN 201821614830 U CN201821614830 U CN 201821614830U CN 208704808 U CN208704808 U CN 208704808U
- Authority
- CN
- China
- Prior art keywords
- cone
- coal gas
- pressure tappings
- support frame
- shell
- 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
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Abstract
The utility model provides the dedicated Cone Flowmeter of coal gas, and the utility model provides the dedicated Cone Flowmeter of coal gas, including external shell and throttling element, and perforation is provided with cavity in shell, and throttling element is fixedly installed in the cavity；Throttling element includes cone and support frame；Support frame is fixed on the inner wall of external shell, and centrum is fixedly connected between support frame；Cone and cavity are set on same central axes；One end of shell is equipped with positive pressure tappings and negative pressure tappings in parallel, positive pressure tappings, negative pressure tappings are connected with the diaphragm flange of double Flange changers respectively, the utility model, which can solve, is easy to blocking differential pressure signal pipeline using orifice plate or general v-shaped cone flow meter, the problem of causing measurement of gas flow to interrupt, with stable structure, measurement is accurate, and has many advantages, such as good reproducibility.
Description
Technical field
The utility model relates to instrument industries, mainly propose a kind of dedicated Cone Flowmeter of coal gas.
Background technique
Differential pressure flowmeter is a kind of with a long history, maximum flowmeter of dosage, take throttling element as the differential pressure type stream of detection
Meter is wherein most widely used a kind of flowmeter.Its working principle is that: when fluid flows through throttling element, part static energy is changed into
Kinetic energy generates pressure difference, is basic with Bernoulli's theorem and flowing continuity equation in conjunction with known fluid condition, pipeline condition
Principle, to acquire flow.Compared to relatively at present industrially apply with the flowmeters such as orifice plate, Venturi tube, Cone Flowmeter master
Have the advantages that front and back flow development length requirement is low, crushing is small, precision is high, outflow system is stable.
Domestic measurement coal gas generally uses orifice plate or V-type cone flow meter at present, but due to existing very in industrial gas medium
More impurity are easy to blocking differential pressure signal pipeline using above-mentioned flowmeter, measurement of gas flow are caused to interrupt.For trade settlement
Flowmeter influence it is bigger, serious economic dispute can be generated.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of dedicated Cone Flowmeter of coal gas, solves to use orifice plate or V-type
The problem of cone flow meter is easy to blocking differential pressure signal pipeline, and measurement of gas flow is caused to interrupt.
In order to solve the above technical problems, the technical solution adopted in the utility model is: including external shell and throttling element, institute
It states perforation in shell and is provided with cavity, the throttling element fixed setting is in the cavity；The throttling element includes cone and branch
Support；Support frame as described above is fixed on the inner wall of the external shell, and the cone is fixedly connected between support frame as described above；Institute
It states cone and the cavity is set on same central axes；One end of the shell is equipped with positive pressure tappings and negative pressure tappings, institute in parallel
It states and is equipped with double flanges differential pressure transmitter between positive pressure tappings and the negative pressure tappings.
Further, the positive pressure tappings and the negative pressure tappings upper end are also set up there are two pressure flange.
Further, the shell both ends are additionally provided with connecting flange.
Further, the double flanges differential pressure transmitter includes transmitter host and remote transmission device, the remote transmission device packet
Capillary and diaphragm seal ring flange are included, described capillary one end is fixedly connected with the transmitter host, and the capillary is another
One end is fixedly connected with diaphragm seal ring flange, and the diaphragm seal ring flange, which is equipped with, surveys pressuring film plate.
Further, the pore size of the positive pressure tappings and the negative pressure tappings is 48~50mm.
Further, support frame as described above is foil support.
Compared with prior art, the utility model has the advantages and positive effects of:
1. the utility model is cooperating double flange differential pressures to become by the pressure tappings aperture of the increase dedicated Cone Flowmeter of coal gas
Device is sent, can thoroughly solve the problems, such as that flowmeter differential pressure signal pipeline blockage causes measurement of gas flow to interrupt, under normal circumstances
Non-maintaining maintenance may be implemented.
2. the utility model is by being changed to what both ends were fixed cone by foil support for conventional support structure, energy
Influence of the support construction to fluid is enough effectively reduced, to reduce loss, keeps measurement more accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the left view of the utility model structure.
Fig. 3 is the structural schematic diagram of the throttling element of the utility model.
Fig. 4 is the left view of the throttling element of the utility model
In figure: external shell -1, throttling element -2, cavity -3, cone -4, support frame -5, positive pressure tappings -6, negative pressure tappings -
7, double flanges differential pressure transmitter -8, transmitter host -81, remote transmission device -82, capillary -821, diaphragm seal ring flange -822,
Survey pressuring film plate -823, pressure flange -9, connecting flange -10.
Specific embodiment
In order to better understand the utility model, the utility model is carried out into one with attached drawing combined with specific embodiments below
The description of step.
As Figure 1-Figure 4, the dedicated Cone Flowmeter of coal gas, including external shell 1 and throttling element 2 are passed through in the shell 1
Logical to be provided with cavity 3, the throttling element 2 is fixed in the cavity 3；The throttling element 2 includes cone 4 and support frame 5；
Support frame as described above 5 is fixed on the inner wall of the external shell 1, and the cone 4 is fixedly connected between support frame as described above 5；Institute
The stability that support frame 5 increases the throttling element 2 is stated, the concentric co-axial structure of the throttling element 2 is can effectively ensure that, prevents
Movement of the throttling element 2 due to fluid, caused 4 change in location of cone, support frame as described above 5 are set with the cavity 3
In on same central axes；One end of the shell 1 is equipped in parallel for the positive pressure tappings 6 of pressure and for taking by throttling set
The negative pressure tappings 7 of pressure later, the positive pressure tappings 6 and 7 upper end of negative pressure tappings are also set up there are two pressure flange 9, and two
A pressure flange is equipped with double flanges differential pressure transmitter 8, and the pressure difference of two pressure tappings is directly measured by pressure difference transmitter and is turned
Forming current signal is output to the external equipment to match.
Further, the double flanges differential pressure transmitter (8) includes transmitter host 81 and remote transmission device 82, described remote
Passing device 82 includes capillary 821 and diaphragm seal ring flange 822, and described 821 one end of capillary is fixedly connected with the pick-up
Device host 81,821 other end of capillary are fixedly connected with diaphragm seal ring flange 822, on the diaphragm seal ring flange
Equipped with pressuring film plate 823 is surveyed, when work, diaphragm seal ring flange is connected on pressure flange, by diaphragm seal ring flange
The positive pressure and negative pressure signal for surveying pressuring film plate measurement fluid are transmitted on transmitter host by capillary again, and transmitter host will measure
Positive pressure and negative pressure between pressure difference be converted to current signal after export.
Further, 1 both ends of shell are additionally provided with connecting flange 10.
Further, the pore size of the positive pressure tappings 6 and the negative pressure tappings 7 is 48~50mm, prevents Gas Flow
Impurity blocks differential pressure signal pipeline in dynamic process, and measurement of gas flow is caused to interrupt.
Further, support frame as described above 5 is foil support, when cone is fixed, reduces the influence to fluid, subtracts
Small loss.
The course of work of the utility model is as follows:
When fluid flows into flowmeter, cone gradually tapers up fluid axisymmetrically towards inside pipe wall, forms gradual ring
Dress is shunk.Fluid is also gradually accelerated while circulation area is shunk.Due to enabling it to more in cone in the duct mandrel line
The high velocity central of VELOCITY DISTRIBUTION is effectively acted on, and the space between cone gabarit and inside pipe wall is unobstructed.?
The downstream of cone forms a low-pressure area.When work, diaphragm seal ring flange is connected on pressure flange, passes through diaphragm seal method
The positive pressure and negative pressure for surveying pressuring film plate measurement fluid on blue disk, signal are transmitted on transmitter host by capillary again, transmitter
Pressure difference between the positive pressure measured and negative pressure is converted to after current signal and is output to flow integrator or computer by host.Difference
At evolution relationship between pressure and flow, the flow of fluid can be calculated by differential pressure.
The method of the utility model change routine V cone flow meter internal negative pressure pressure.It is changed to support intermediate one to bore by two ends
Physique structure, positive negative pressure pipe are arranged in parallel in bullet two sides tube wall, by the way that flange is arranged in positive negative pressure pipe, pass through
Double flanges differential pressure transmitter carries out pressure, and increases pressure pipe aperture, and having the utility model, accuracy rate is high, repeatability
The advantages that height, measurement range is big, not easy to wear, and crushing is small, and can thoroughly solve flowmeter differential pressure signal pipeline blockage and make
The problem of interrupting at measurement of gas flow, may be implemented non-maintaining maintenance under normal circumstances, and energy conservation and environmental protection reduces loss.
The embodiments of the present invention are described in detail above, but the content is only the preferable of the utility model
Embodiment should not be considered as limiting the scope of the present invention.It is all to become according to equalization made by the scope of the utility model
Change and improve etc., it shall still fall within the scope of this patent.
Claims (6)
1. the dedicated Cone Flowmeter of coal gas, it is characterised in that: including external shell (1) and throttling element (2), in the shell (1)
Perforation is provided with cavity (3), and the throttling element (2) is fixed in the cavity (3)；The throttling element (2) includes cone
(4) and support frame (5)；Support frame as described above (5) is fixed on the inner wall of the external shell (1), and the cone (4) is fixedly connected
Between support frame as described above (5)；The cone (4) and the cavity (3) are set on same central axes；The one of the shell (1)
Hold row level with both hands and be equipped with positive pressure tappings (6) and negative pressure tappings (7), is equipped between the positive pressure tappings (6) and the negative pressure tappings (7) double
Flange differential pressure transmitter (8).
2. the dedicated Cone Flowmeter of coal gas according to claim 1, it is characterised in that: positive pressure tappings (6) and described
Negative pressure tappings (7) upper end is also set up there are two pressure flange (9).
3. the dedicated Cone Flowmeter of coal gas according to claim 1, it is characterised in that: shell (1) both ends are additionally provided with
Connecting flange (10).
4. the dedicated Cone Flowmeter of coal gas according to claim 1, it is characterised in that: the double flanges differential pressure transmitter
It (8) include transmitter host (81) and remote transmission device (82), the remote transmission device (82) includes capillary (821) and diaphragm seal
Ring flange (822), described capillary (821) one end are fixedly connected with the transmitter host (81), and the capillary (821) is another
One end is fixedly connected with diaphragm seal ring flange (822), and the diaphragm seal ring flange, which is equipped with, surveys pressuring film plate (823).
5. the dedicated Cone Flowmeter of coal gas according to claim 1, it is characterised in that: positive pressure tappings (6) and described
The pore size of negative pressure tappings (7) is 48~50mm.
6. the dedicated Cone Flowmeter of coal gas according to claim 1, it is characterised in that: support frame as described above (5) is aerofoil profile branch
Frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614830.3U CN208704808U (en) | 2018-09-30 | 2018-09-30 | The dedicated Cone Flowmeter of coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614830.3U CN208704808U (en) | 2018-09-30 | 2018-09-30 | The dedicated Cone Flowmeter of coal gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208704808U true CN208704808U (en) | 2019-04-05 |
Family
ID=65947921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821614830.3U Expired - Fee Related CN208704808U (en) | 2018-09-30 | 2018-09-30 | The dedicated Cone Flowmeter of coal gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208704808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112806341A (en) * | 2021-02-25 | 2021-05-18 | 吉林大学 | Orchard target spraying control system and method based on laminar layer |
-
2018
- 2018-09-30 CN CN201821614830.3U patent/CN208704808U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112806341A (en) * | 2021-02-25 | 2021-05-18 | 吉林大学 | Orchard target spraying control system and method based on laminar layer |
| CN112806341B (en) * | 2021-02-25 | 2023-05-09 | 吉林大学 | Orchard targeting spraying control system and method based on laminar layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190405 Termination date: 20200930 |