CN204027631U - A kind of coiling steam pipe arrangement - Google Patents
A kind of coiling steam pipe arrangement Download PDFInfo
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- CN204027631U CN204027631U CN201420403362.0U CN201420403362U CN204027631U CN 204027631 U CN204027631 U CN 204027631U CN 201420403362 U CN201420403362 U CN 201420403362U CN 204027631 U CN204027631 U CN 204027631U
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- pipe arrangement
- steam pipe
- flowmeter
- coiling
- steam
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Abstract
The utility model relates to a kind of coiling steam pipe arrangement, for the steam in drum is derived and is transported to downstream, on pipe arrangement, be provided with flowmeter, the steam pipe arrangement that the steam pipe arrangement connecting in flowmeter inflow point is the door shape structure that is formed by connecting through two coupling bends, meets and carries the requirement of fluid to the straight length of steam pipe arrangement.Compared with prior art, the utility model is by changing the shape of the steam pipe arrangement of air inlet, make to guarantee the requirement of flowmeter to length of straight pipe under the prerequisite that need not transform boiler structure, and for the specific flowmeter connecting, accurately design the length of the steam pipe arrangement that is connected to flowmeter air intake opening and place, gas outlet, guarantee that fluid flows and can not be offset in steam pipe arrangement.
Description
Technical field
The utility model relates to a kind of steam pipe arrangement, especially relates to a kind of coiling steam pipe arrangement.
Background technology
Flowmeter is a kind of instrument that has serious dependence to quality is installed.The flowmeter of a first-class quality, if install unreasonablely, often causes very large error.
In the installation of flow instrument, a thorny problem that usually perplexs designer and site operation personnel is that flow development length is inadequate, puts up with this problem below and sets off a discussion.
Now, people are in nearly 100 kinds of the flowmeter of applying, different in these principle of work or structure, in miscellaneous flowmeter, except extremely indivedual kind flowmeters such as volumeter, coriolis mass flowmeters
[1] [2], all straight length before and after flowmeter is had to specific requirement.This is because the coefficient of flow of these flowmeters is demarcated and obtained under full-blown pipe stream condition, while applying at the scene these flowmeters, also only under full-blown pipe stream condition, applies these coefficient of flow guarantee measuring accuracies.
So-called full-blown pipe stream, exactly have the pipe stream of full-blown velocity distribution.In flow process, along flowing to the velocity distribution not changing to another xsect from an xsect, be called full-blown velocity distribution, it normally could form at sufficiently long straight length end.
The improper meeting of pipe design causes the disturbance of fluid, velocity of initiation distributes and is out of shape and whirlpool, the former is from valve or elbow, and the many elbows from two above Different Plane of whirlpool only leave sufficiently long straight length or special rectifier is installed and just can overcome these impacts before and after flowmeter.
Utility model content
The purpose of this utility model is exactly to provide a kind of coiling steam pipe arrangement of flowmeter to the requirement of length of straight pipe that guarantee in order to overcome the defect of above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of coiling steam pipe arrangement, for the steam in drum is derived and is transported to downstream, on pipe arrangement, be provided with flowmeter, the steam pipe arrangement that the steam pipe arrangement connecting in flowmeter inflow point is the door shape structure that is formed by connecting through two coupling bends, meets and carries the requirement of fluid to the straight length of steam pipe arrangement.
Described flow is counted vortex shedding flow meter.
The total length that is connected to the steam pipe arrangement of flowmeter inflow point is 20 times of flowmeter internal diameter.
The total length that is connected to the steam pipe arrangement in flowmeter exit is 5 times of flowmeter internal diameter.
Described flow is counted all right half-twist of vortex shedding flow meter, terminal box is arranged on to the side of the steam pipe arrangement of level.
Compared with prior art, the utility model is by changing the shape of the steam pipe arrangement of air inlet, make to guarantee the requirement of flowmeter to length of straight pipe under the prerequisite that need not transform boiler structure, and for the specific flowmeter connecting, accurately design the length of the steam pipe arrangement that is connected to flowmeter air intake opening and place, gas outlet, guarantee that fluid flows and can not be offset in steam pipe arrangement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model in embodiment 1;
Fig. 2 is partial structurtes schematic diagram of the present utility model in embodiment 2.
In figure, 1 is that air inlet steam pipe arrangement, 2 is that flowmeter, 3 is the steam pipe arrangement of giving vent to anger.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment 1
Flow development length is the impact on flow measurement result not, and this is a very complicated problem.Generally speaking, the corresponding increase of flow measurement uncertainty when flow development length is inadequate, but increase how much, and the additive error causing is thus forward or negative sense, this will make a concrete analysis of.The present embodiment is in order to overcome above-mentioned technical matters, steam pipe arrangement is adjusted, its structure as shown in Figure 1, for the steam in drum is derived and is transported to downstream, mainly comprise air inlet steam pipe arrangement 1, be connected to the entrance point of flowmeter 2, and the steam pipe arrangement 3 of giving vent to anger, be connected to the endpiece of flowmeter.The flowmeter 2 using is vortex shedding flow meter, in order to meet the requirement of vortex shedding flow meter to straight length, the steam pipe arrangement that the air inlet steam pipe arrangement 1 connecting in flowmeter 2 inflow points is the door shape structure that is formed by connecting through two coupling bends, the total length of air inlet steam pipe arrangement 1 is 20 times of flowmeter internal diameter, and the total length that is connected to the steam pipe arrangement 3 of giving vent to anger in flowmeter 2 exits is 5 times of flowmeter internal diameter.
Embodiment 2
A coiling steam pipe arrangement, as shown in Figure 2, most structures are identical with embodiment 1 for its structure, and difference is, in embodiment 2, flowmeter 2 half-twists, the terminal box of flowmeter is arranged on the side of the steam pipe arrangement of level.Because the straight length of flow standard device is all quite long, so the velocity distribution of flowmeter preceding pipeline inner fluid is symmetrical, there is not vortex yet.Like this, flow velocity peak and axis coinciding in circular flow area, thereby after rotometer 2, the effect of the quality that still can be guaranteed.
Claims (5)
1. a coiling steam pipe arrangement, for the steam in drum is derived and is transported to downstream, on pipe arrangement, be provided with flowmeter, it is characterized in that, the steam pipe arrangement that the steam pipe arrangement connecting in flowmeter inflow point is the door shape structure that is formed by connecting through two coupling bends, meets and carries the requirement of fluid to the straight length of steam pipe arrangement.
2. a kind of coiling steam pipe arrangement according to claim 1, is characterized in that, described flow is counted vortex shedding flow meter.
3. a kind of coiling steam pipe arrangement according to claim 2, is characterized in that, the total length that is connected to the steam pipe arrangement of flowmeter inflow point is 20 times of flowmeter internal diameter.
4. a kind of coiling steam pipe arrangement according to claim 2, is characterized in that, the total length that is connected to the steam pipe arrangement in flowmeter exit is 5 times of flowmeter internal diameter.
5. a kind of coiling steam pipe arrangement according to claim 2, is characterized in that, described flow is counted all right half-twist of vortex shedding flow meter, terminal box is arranged on to the side of the steam pipe arrangement of level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403362.0U CN204027631U (en) | 2014-07-21 | 2014-07-21 | A kind of coiling steam pipe arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403362.0U CN204027631U (en) | 2014-07-21 | 2014-07-21 | A kind of coiling steam pipe arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204027631U true CN204027631U (en) | 2014-12-17 |
Family
ID=52067475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420403362.0U Active CN204027631U (en) | 2014-07-21 | 2014-07-21 | A kind of coiling steam pipe arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204027631U (en) |
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2014
- 2014-07-21 CN CN201420403362.0U patent/CN204027631U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |