CN202734885U - Novel flange pressure flow measurement device - Google Patents
Novel flange pressure flow measurement device Download PDFInfo
- Publication number
- CN202734885U CN202734885U CN 201220395708 CN201220395708U CN202734885U CN 202734885 U CN202734885 U CN 202734885U CN 201220395708 CN201220395708 CN 201220395708 CN 201220395708 U CN201220395708 U CN 201220395708U CN 202734885 U CN202734885 U CN 202734885U
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- flange
- upstream
- orifice plate
- downstream
- standard orifice
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Abstract
A flange pressure flow measurement device comprises an upstream flange connected with an upper stream pipeline, a downstream flange connected with a downstream pipeline and a flange pressure standard orifice plate. The upstream flange and the downstream flange are concave face flanges and are respectively provided with a pressure tapping, the flange pressure standard orifice plate is clamped between concave faces of the upstream flange and the downstream flange through a fastening part, and the inner diameter of the concave faces of the upstream flange and the downstream flange is matched with the outer diameter of the flange pressure standard orifice plate. The flange pressure standard orifice plate can be sealed with the upstream flange and the downstream flange through special metal sealing gaskets in a metal-collision-metal mode. The measurement device is high in measurement accuracy, good in sealing performance, good in rigidity of the standard orifice plate and suitable for differential pressure type flow gauges.
Description
Technical field
The utility model belongs to the measurement of fluid flow field, relates in particular to a kind of flange tapping flow measurement device that adopts novel location and hermetically-sealed construction.
Background technology
The flange tapping flow measurement device forms differential pressure flowmeter jointly as primary element and differential pressure transmitter secondary instrument, be the most extensively, the most general differential pressure flowmeter, it comprises the upstream flange that is connected with upstream line, the downstream flange that is connected with downstream line and flange tapping standard orifice plate (hereinafter to be referred as standard orifice plate), the use of standard orifice plate is with a long history, in the world, domestic all standardization.But the most standard orifice plate is owing to rely on Bolt to position in the installation process, and right alignment is not high; Adopt band inner and outer ring metal to twine the gasket seal sealing, interior ring size is not suitable for; There are the reasons such as gap between flange and standard orifice plate, cause the standard orifice plate measuring accuracy not high.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of novel flange pressure flow measurement device, to overcome the defective of existing flange tapping flow measurement device.
The technical scheme that the utility model adopts is: a kind of flange tapping flow measurement device, comprise the upstream flange that is connected with upstream line, the downstream flange that is connected with downstream line and flange tapping standard orifice plate, described upstream and downstream flange is female flange, and be respectively equipped with pressure tappings, described flange tapping standard orifice plate is held between the concave surface of upstream and downstream flange by the securing member mounting clamp, and the concave surface internal diameter of upstream and downstream flange cooperates installation with the external diameter of flange tapping standard orifice plate.
Adopt technique scheme, the concave surface internal diameter by the upstream and downstream flange cooperates installation with the external diameter of flange tapping standard orifice plate, can improve the installation right alignment of flange tapping standard orifice plate, and then the measuring accuracy of raising standard orifice plate.
One of further technical scheme of the utility model is: be respectively equipped with the seal groove of placing metal packing washer on the left and right side of described flange tapping standard orifice plate, the inside of described metal packing washer has spring, the surface is flexible material, by realizing the sealing of metal-bump-metal between metal packing washer and the upstream and downstream flange.
Adopt technique scheme, can realize realizing between flange tapping standard orifice plate and the upstream and downstream flange sealing of metal-bump-metal improving reliability and the integral rigidity of sealing, the non-deformability of increase standard orifice plate by particulate metal packing washer.And by spring and the surface flexible material of particulate metal packing washer inside, the packing washer in the use answers force retaining constant, guarantees the lasting effectiveness of sealing.
Two of the further technical scheme of the utility model is: the endoporus junction of described flange tapping standard orifice plate and upstream and downstream flange is round-corner transition.
Adopt technique scheme, do not have gap and misalignment between the standard orifice plate after the installation and flange, further improve the measuring accuracy of flange tapping standard orifice plate, and reduce stress and concentrate.
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the structural drawing of a kind of embodiment of the utility model.
Fig. 2 is the A place enlarged drawing among Fig. 1.
Fig. 3 is the standard orifice plate synoptic diagram.
Fig. 4 is the B-B sectional view of Fig. 3.
Embodiment
Such as Fig. 1, Fig. 2, Fig. 3, embodiment illustrated in fig. 4, a kind of flange tapping flow measurement device, comprise the upstream flange 2 that is connected with upstream line, the downstream flange 6 that is connected with downstream line and flange tapping standard orifice plate 3, upstream and downstream flange 2,6 is female flange, and be respectively equipped with pressure tappings 8,9, measure the upstream and downstream pressure differential by pressure tappings.Flange tapping standard orifice plate 3 is held between upstream and downstream flange 2,6 the concave surface by securing member 7 mounting clamps, and upstream and downstream flange 2,6 concave surface internal diameter cooperate installation with the external diameter of flange tapping standard orifice plate 3.Flange tapping standard orifice plate 3 and upstream and downstream flange 2,6 endoporus junction are fillet R transition.Be respectively equipped with on the left and right side of flange tapping standard orifice plate 3 and place metal packing washer 4,5 seal groove 10, by metal packing washer 4,5 and upstream and downstream flange 2,6 between realize the sealing of metal-bump-metal.In the present embodiment, metal packing washer adopts the Garlock Helicoflex of company series packing washer, and this particulate metal packing washer 4,5 inside have spring, and the surface is flexible material.For improving the precision of the upstream conduit sections that standard orifice plate installs, and then improve the measuring accuracy of standard orifice plate, upstream line 1 and upstream flange 2 welding and boring endoporus.
Claims (3)
1. flange tapping flow measurement device, comprise the upstream flange (2) that is connected with upstream line, the downstream flange (6) that is connected with downstream line and flange tapping standard orifice plate (3), its spy is being: described upstream and downstream flange (2,6) is female flange, and be respectively equipped with pressure tappings (8,9), described flange tapping standard orifice plate (3) is held between the concave surface of upstream and downstream flange (2,6) by securing member (7) mounting clamp, and the concave surface internal diameter of upstream and downstream flange (2,6) cooperates installation with the external diameter of flange tapping standard orifice plate (3).
2. flange tapping flow measurement device according to claim 1, it is characterized in that: be respectively equipped with the seal groove (10) of placing metal packing washer (4,5) on the left and right side of described flange tapping standard orifice plate (3), the inside of described metal packing washer (4,5) has spring, the surface is flexible material, by realizing the sealing of metal-bump-metal between metal packing washer (4,5) and the upstream and downstream flange (2,6).
3. flange tapping flow measurement device according to claim 1 and 2 is characterized in that: described flange tapping standard orifice plate (3) is fillet (R) transition with the endoporus junction of upstream and downstream flange (2,6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220395708 CN202734885U (en) | 2012-08-10 | 2012-08-10 | Novel flange pressure flow measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220395708 CN202734885U (en) | 2012-08-10 | 2012-08-10 | Novel flange pressure flow measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734885U true CN202734885U (en) | 2013-02-13 |
Family
ID=47660575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220395708 Expired - Fee Related CN202734885U (en) | 2012-08-10 | 2012-08-10 | Novel flange pressure flow measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768052A (en) * | 2012-08-10 | 2012-11-07 | 浙江苍南仪表厂 | Novel device for measuring flange pressure tapping flows |
-
2012
- 2012-08-10 CN CN 201220395708 patent/CN202734885U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768052A (en) * | 2012-08-10 | 2012-11-07 | 浙江苍南仪表厂 | Novel device for measuring flange pressure tapping flows |
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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: 20130213 Termination date: 20180810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |