CN2685831Y - Clamping ring shape orifice plate throttling gear - Google Patents
Clamping ring shape orifice plate throttling gear Download PDFInfo
- Publication number
- CN2685831Y CN2685831Y CN 200420010516 CN200420010516U CN2685831Y CN 2685831 Y CN2685831 Y CN 2685831Y CN 200420010516 CN200420010516 CN 200420010516 CN 200420010516 U CN200420010516 U CN 200420010516U CN 2685831 Y CN2685831 Y CN 2685831Y
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- pressure
- measuring tube
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- flange
- choker
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Abstract
The utility model provides a clamping annular orifice plate throttling device which is mainly composed by that a front measuring pipe provided with a flange and a pressure assembly is orderly connected with a throttling pipe whose interior is provided with a throttling plate and a back measuring pipe provided with a flange and a pressure assembly. The utility model has all the advantages of the prior art, and also has the advantages that the structure is simple, the production technology is convenient, the production cost can be reduced, and the sealing performance of the product can be ensured. Meanwhile, the installation and the construction are convenient, the work load of the construction can be effectively decreased, the construction period is shortened, the construction progress is accelerated, and the construction cost is decreased. The utility model also has the dual function of simple maintenance and periodical comprehensive maintenance.
Description
Technical field
The utility model relates to a kind of fluid flow restriction device, particularly clamps formula annular orifice restriction device.It is applicable to measures the ducted fluid flow of technological process.
Background technology
At present, on the flow instrument market, the fluid flow restriction device kind of sale is a lot of both at home and abroad.And the innovation and creation of a kind of " annular orifice restriction device " were once disclosed on the Chinese patent communique, its notification number is: CN2354112Y.This restriction device mainly is that guide rail is arranged in measuring tube, and fixing or slidely connect the flow measurement plate on it, its fluoran stream surface is a smooth flat, and upstream and downstream, both sides measurement zone has the pressure port that is communicated with grading ring, formation pressure balancer structure.Though this device reliable operation, measuring accuracy is moderate, wide accommodation, can prevent that the impurity in the fluid from stopping up pressure tappings, be subjected to the influence of upstream flow shock resistance part such as elbow, valve, reducing pipe etc. less, but its complex structure, the on-the-spot trouble of installing, loaded down with trivial details inconvenience of working procedure and workload are big, and this not only can incur loss through delay the site operation progress, also can increase construction cost.Thereby can limit applying of annular throttle orifice plate apparatus, weaken its market competitiveness.
The utility model content
The purpose of this utility model is to provide a kind of formula annular orifice restriction device that clamps, and it can overcome the deficiency of prior art, and it is simple in structure, production cost is low, can simplify on-the-spot installation procedure effectively, convenient construction and maintenance, and can reduce construction cost effectively, help applying.
Its solution is: by preceding measuring tube successively with choker-line, back measuring tube is connected and constitutes measuring tube.Be communicated with high pressure pressure guiding pipe and high pressure pressure part on preceding measuring tube, an end is connected with flange; Be communicated with low pressure pressure guiding pipe and low pressure pressure part on the back measuring tube, an end is connected with flange; Choker-line between forward and backward measuring tube, it is the choke block of smooth flat that fluoran stream surface is arranged in it.The pressure tappings center line of the high and low pressure pressure part on the described forward and backward measuring tube with the distance of the fluoran stream surface of the choke block that is positioned at choker-line is: L
1=(0.2-2) D, L
2=(0.2-2) D, D is the measuring tube internal diameter in the formula.
The utility model is mainly established the choker-line of choke block and the back measuring tube of flanged and pressure part is formed with interior successively by the preceding measuring tube of flanged and pressure part.It also has following advantage except that the whole advantages with prior art: promptly, not only simple in structure, easy to assembly, production technology is easy, can reduce production costs, and can guarantee the sealing property of product, and installation is easy, the maintenance of being more convenient for.As long as install this restriction device at technological process pipeline gap, and at them the two junction welding can be finished installation, compare with the installation of prior art, this not only greatly reduces workload, shorten the engineering time, quicken construction speed, and can also reduce construction cost effectively.Simultaneously, as long as open maintenance window,, just can clear up the impurity that adheres on the choke block by means of cleaning tool; Just can clear up the impurity at pressure tappings place when opening service hatch on the pressure part ring pipe; When the needs overhaul, as long as choker-line is disassembled, can thoroughly clear up forward and backward measuring tube inside, perhaps carefully clear up choke block or change it.So both can simple and easyly safeguard, again regular full maintenance.
Description of drawings
Fig. 1, embodiment 1, for clamping the main cut-open view of formula annular orifice restriction device.
Fig. 2 is the A-A cut-open view among Fig. 1.
Fig. 3, embodiment 2, the main cut-open view when being the pressure pressure guiding pipe for the pressure part that clamps formula annular orifice restriction device.
Fig. 4 is the B-B cut-open view among Fig. 3.
Embodiment
Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings
Embodiment 1
Among Fig. 1, Fig. 2, by preceding measuring tube 1 successively with choker-line 6, back measuring tube 8 is connected and constitutes measuring tube.One end of preceding measuring tube 1 is welded with flange 5, be evenly equipped with 4 high pressure pressure tappings on the same xsect of tube wall, they are communicated with grading ring shape pipe 2 by 4 high pressure pressure pipes 16 respectively, high pressure pressure part before constituting, on preceding grading ring shape pipe 2, be communicated with 1 high pressure pressure guiding pipe 3, the high static pressure that preceding high pressure pressure part is measured can be caused the hyperbaric chamber of differential pressure transmitter, on the preceding grading ring shape pipe 2 service hatch be arranged and plug 4 sealings are arranged.One end of back measuring tube 8 is welded with flange 12, be evenly equipped with 4 low pressure pressure tappings on the same xsect of tube wall, they are communicated with back grading ring shape pipe 10 by 4 low pressure pressure pipes 9 respectively, constitute low pressure pressure part, be communicated with 1 low pressure pressure guiding pipe 17 on back grading ring shape pipe 10, the low static pressure that pressure part in back can be measured causes the low-pressure chamber of differential pressure transmitter.On back grading ring shape pipe 10, service hatch is arranged and plug 11 sealings are arranged.The choker-line 6 that between forward and backward measuring tube 1,8 and by flange 5,12 and packing ring 7, is attached thereto, be welded with maintenance suspension ring 18 and maintenance window 19 on its tube wall, it is by capping 13 sealings, be fixedly connected with choke block 15 by support member 14 in the choker-line 6, its fluoran stream surface is a smooth flat, and fluoran stream surface is apart from the distance L of the center line of high pressure pressure tappings
1=0.8D is apart from the distance L of low pressure pressure tappings center line
2=0.5D, the D in the following formula are the measuring tube internal diameter.This kind restriction device is applicable to the flow of measuring dirty medium such as coal gas etc.
Among Fig. 3, Fig. 4, on the tube wall of preceding measuring tube 11 high pressure pressure impulse mouth is arranged, high pressure pressure pressure guiding pipe 20 is communicated with preceding measuring tube 1 by high pressure pressure impulse mouth, 1 low pressure pressure impulse mouth is then arranged on the tube wall of measuring tube 8, low pressure pressure pressure guiding pipe 21 is communicated with back measuring tube 8 by low pressure pressure impulse mouth, between forward and backward measuring tube 1,8, and be connected with choker-line 6 by flange 5,12 and packing ring 7, other are with embodiment 1.This restriction device is applicable to the flow of measuring clean medium such as hot-air etc.
Be installed in the ducted formula annular orifice restriction device that clamps of technological process, it is communicated with the high and low pressure chamber of differential pressure transmitter by the high and low pressure pressure guiding pipe.After fluid the past, measuring tube 1 entered this throttling device, during the circular passage of choke block 15 and the choker-line 6 inwalls formation of flowing through, flow velocity was accelerated, and hydrostatic pressure descends.Before fluid is flowed through during measuring tube 1, the high static pressure that is recorded by high pressure pressure part is sent to the hyperbaric chamber of differential pressure transmitter by high pressure pressure guiding pipe 3, and fluid is by choker-line 6, static pressure descends, when flowing through back measuring tube 8, the low static pressure that is recorded by low pressure pressure part is sent to the low-pressure chamber of differential pressure transmitter by low pressure pressure guiding pipe 17, and the differential pressure transmitter output current signal also demonstrates flow value by Displaying Meter, thereby can obtain the flow of institute's fluid measured.
Claims (2)
1, a kind of formula annular orifice restriction device that clamps, comprise measuring tube, it is characterized in that, measuring tube is connected by preceding measuring tube (1), choker-line (6), back measuring tube (8) and constitutes, be communicated with high pressure pressure guiding pipe (3) and high pressure pressure part on the preceding measuring tube (1), one end is connected with flange (5), be communicated with low pressure pressure guiding pipe (17) and low pressure pressure part on the back measuring tube (8), one end is connected with flange (12), be connected the choker-line (6) between forward and backward measuring tube (1), (8), be provided with the choke block that fluoran stream surface is a shiny surface (15) in it.
2, the formula annular orifice restriction device that clamps as claimed in claim 1, the pressure tappings center line that it is characterized in that the high and low pressure pressure part on forward and backward measuring tube (1), (8) is respectively L with the distance of the fluoran stream surface of the choke block (15) that is positioned at choker-line (6)
1=(0.2-2) D, L
2=(0.2-2) D, the D in the formula is the measuring tube internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010516 CN2685831Y (en) | 2004-04-01 | 2004-04-01 | Clamping ring shape orifice plate throttling gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010516 CN2685831Y (en) | 2004-04-01 | 2004-04-01 | Clamping ring shape orifice plate throttling gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2685831Y true CN2685831Y (en) | 2005-03-16 |
Family
ID=34668483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420010516 Expired - Fee Related CN2685831Y (en) | 2004-04-01 | 2004-04-01 | Clamping ring shape orifice plate throttling gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2685831Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181039A (en) * | 2015-08-07 | 2015-12-23 | 成都国光电子仪表有限责任公司 | Throttling device applicable to condensate natural gas pipeline |
| CN107246897A (en) * | 2017-08-04 | 2017-10-13 | 银川融神威自动化仪表厂(有限公司) | Multichannel self-rectifying low pressure loss subtracts consumption device |
| CN108362907A (en) * | 2018-05-04 | 2018-08-03 | 刘冠宏 | A kind of fluid velocity measuring device |
| CN108414041A (en) * | 2018-04-27 | 2018-08-17 | 湖北新冶钢特种钢管有限公司 | A kind of annular perforated-plate throttling device and its pressure method for discharging pollution |
-
2004
- 2004-04-01 CN CN 200420010516 patent/CN2685831Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181039A (en) * | 2015-08-07 | 2015-12-23 | 成都国光电子仪表有限责任公司 | Throttling device applicable to condensate natural gas pipeline |
| CN107246897A (en) * | 2017-08-04 | 2017-10-13 | 银川融神威自动化仪表厂(有限公司) | Multichannel self-rectifying low pressure loss subtracts consumption device |
| CN108414041A (en) * | 2018-04-27 | 2018-08-17 | 湖北新冶钢特种钢管有限公司 | A kind of annular perforated-plate throttling device and its pressure method for discharging pollution |
| CN108362907A (en) * | 2018-05-04 | 2018-08-03 | 刘冠宏 | A kind of fluid velocity measuring device |
| CN108362907B (en) * | 2018-05-04 | 2024-03-22 | 刘冠宏 | Fluid velocity measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |