CN203605985U - Span pressure measurement nuclear-grade large-diameter nozzle device - Google Patents
Span pressure measurement nuclear-grade large-diameter nozzle device Download PDFInfo
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- CN203605985U CN203605985U CN201320752785.9U CN201320752785U CN203605985U CN 203605985 U CN203605985 U CN 203605985U CN 201320752785 U CN201320752785 U CN 201320752785U CN 203605985 U CN203605985 U CN 203605985U
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Abstract
The utility model relates to a span pressure measurement nuclear-grade large-diameter nozzle device. The span pressure measurement nuclear-grade large-diameter nozzle device comprises a lower straight pipe section (1) and an upper straight pipe section (5) which are arranged coaxially, wherein a negative pressure leading pipe (3) and a positive pressure leading pipe (4) are installed on the lower straight pipe section (1) and the upper straight pipe section (5) respectively, the lower straight pipe section (1) and the upper straight pipe section (5) are connected with each other, a nozzle (2) is arranged at the position wherein the lower straight pipe section (1) is connected with the upper straight pipe section (5) and comprises a connecting section (2.1) and an extension section (2.2), the connecting section (2.1) is of an annular structure which is installed between the lower straight pipe section (1) and the upper straight pipe section (5), the extension section (2.2) is of a cylindrical structure which is connected to the connecting section (2.1), and the extension section (2.2) is inserted into the lower straight pipe section (1). The span pressure measurement nuclear-grade large-diameter nozzle device has the advantages of being accurate in measurement.
Description
Technical field
The utility model relates to a kind of span pressure core level Long Nozzle device.
Background technology
Nozzle throttle device (or claiming restriction flowmeter) is a kind of restriction device of flowing through in pipeline at the fluid that is full of pipeline, a fluid stream will form local contraction in throttling place, thereby flow velocity is increased, static pressure reduces, so it is poor to have produced static pressure before and after throttling element, it is widely used in process control and the measurement in the fields such as nuclear power station, oil, chemical industry, metallurgy, electric power, heat supply, water supply; Conventional nozzle throttle device is that nozzle is installed in a straight length, conventionally adopts the mode such as beat to be directly installed in pressure pipe, and this structure causes nozzle to be combined undertighten with straight length inwall, causes measuring not precisely, safety coefficient reduction.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides one to measure the core of span pressure accurately level Long Nozzle device.
The purpose of this utility model is achieved in that a kind of span pressure core level Long Nozzle device, described device includes downstream straight length and the upstream straight length of coaxial setting, on described downstream straight length and upstream straight length, be separately installed with negative pressure guiding pipe and positive pressure guiding pipe, described downstream straight length and upstream straight length interconnect, described downstream straight length and upstream straight length are gripped with a nozzle in its junction, described nozzle includes linkage section and extension, described linkage section is one to be installed on the ring texture between downstream straight length and upstream straight length, described extension is one to be connected in the tubular structure on linkage section, and extension is inserted in the straight length of downstream.
The utility model span pressure core level Long Nozzle device, described negative pressure guiding pipe inserts the just tube wall to extension of interface of downstream straight length, and the central shaft of the central shaft of the hollow perforate of linkage section and extension and downstream straight length and upstream straight length is located along the same line.
The utility model span pressure core level Long Nozzle device, described downstream straight length and upstream straight length all thicken near the tube wall of one end of junction, on the joint face of described downstream straight length, be provided with stepped hole one, on the joint face of described upstream straight length, be provided with stepped hole two, downstream straight length is connected backward step hole one and stepped hole two and is combined to form a cell body that holds the linkage section of nozzle with upstream straight length.
The utility model span pressure core level Long Nozzle device, the chamfering that the joint face of described downstream straight length arranges near outer wall forms the conical surface one, the chamfering that the joint face of upstream straight length arranges near outer wall forms the conical surface two, and downstream straight length is connected rear cone one and the conical surface two and is combined to form the annular recess that an xsect is del with upstream straight length, in this annular recess, be provided with welding material.
The utility model span pressure core level Long Nozzle device, downstream straight length and upstream straight length be away from being provided with chamfering near outer wall on the free end of junction, and the conical surface of this chamfering and this free-ended end face are 15 ° of angles.
Compared with prior art, the beneficial effects of the utility model are:
The nozzle that the utility model linkage section and extension form is a monolithic construction, the linkage section of nozzle is interposed between downstream straight length and upstream straight length, then be weldingly connected, can complete installation, quick and easy for installation, and owing to not adopting the mode such as beat to install, also can not cause damage to nozzle, therefore guarantee the accuracy of measuring; Thereby make to the utlity model has, withstand voltage height, permanent crushing are little, the feature of long service life, make it can be applicable to the flow measurement of 2 grades of high pressure boron water of Nuclear Power Station.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model span pressure core level Long Nozzle device.
Fig. 2 is the structural representation of the nozzle of the utility model span pressure core level Long Nozzle device.
Wherein:
Downstream straight length 1, nozzle 2, negative pressure guiding pipe 3, positive pressure guiding pipe 4, upstream straight length 5, welding material 6;
The conical surface 1, stepped hole 1;
Linkage section 2.1, extension 2.2;
The conical surface 2 5.1, stepped hole 2 5.2.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of span pressure core level Long Nozzle device that the utility model relates to, described device includes downstream straight length 1 and the upstream straight length 5 of coaxial setting, on described downstream straight length 1 and upstream straight length 5, be separately installed with negative pressure guiding pipe 3 and positive pressure guiding pipe 4, described downstream straight length 1 and upstream straight length 5 interconnect, described downstream straight length 1 and upstream straight length 5 are gripped with a nozzle 2 in its junction, described nozzle 2 includes linkage section 2.1 and extension 2.2, described linkage section 2.1 is one to be installed on the ring texture between downstream straight length 1 and upstream straight length 5, described extension 2.2 is one to be connected in the tubular structure on linkage section 2.1, and extension 2.2 is inserted in downstream straight length 1, and negative pressure guiding pipe 3 inserts the just tube wall to extension 2.2 of interface of downstream straight length 1, the central shaft of hollow perforate and the central shaft of downstream straight length 1 and upstream straight length 5 of linkage section 2.1 and extension 2.2 are located along the same line simultaneously,
Concretely, described downstream straight length 1 and upstream straight length 5 all thicken near the tube wall of one end of junction, on the joint face of described downstream straight length 1, be provided with stepped hole 1, and the chamfering that the joint face of downstream straight length 1 arranges near outer wall forms the conical surface 1, on the joint face of described upstream straight length 5, be provided with stepped hole 2 5.2, and the chamfering that the joint face of upstream straight length 5 arranges near outer wall forms the conical surface 2 5.1, downstream straight length 1 is connected backward step hole 1 and stepped hole 2 5.2 and is combined to form a cell body that holds the linkage section 2.1 of nozzle 2 with upstream straight length 5, and downstream straight length 1 is connected rear cone 1 and the conical surface 2 5.1 and is combined to form the annular recess that an xsect is del with upstream straight length 5, in this annular recess, be provided with welding material 6, thereby by welding, downstream straight length 1 and upstream straight length 5 are linked together, and the outer edge surface after 6 welding of welding material is higher than downstream straight length 1 and upstream straight length 5 outer tube walls, simultaneously, downstream straight length 1 and upstream straight length 5 are away from being provided with chamfering near outer wall on the free end of junction, and the conical surface of this chamfering and this free-ended end face are 15 ° of angles,
When installation, the nozzle 2 that linkage section 2.1 and extension 2.2 form is a monolithic construction, the linkage section of nozzle 2 2.1 is interposed between downstream straight length 1 and upstream straight length 5, then be weldingly connected, can complete installation, quick and easy for installation, and owing to not adopting the mode such as beat to install, also can not cause damage to nozzle 2, therefore guarantee the accuracy of measuring;
When use, because fluid is flowed through after the utility model device, under the effect of nozzle 2, its downstream straight length 1 is poor by producing different static pressures with upstream straight length 5, between the poor and flow of this static pressure, there is definite numerical relation, so undertaken after pressure measurement by negative pressure guiding pipe 3 and positive pressure guiding pipe 4, add character and other numerical value about measurement environment of known fluid, can calculate according to international standard the flow value of fluid.
Claims (6)
1. a span pressure core level Long Nozzle device, described device includes downstream straight length (1) and the upstream straight length (5) of coaxial setting, on described downstream straight length (1) and upstream straight length (5), be separately installed with negative pressure guiding pipe (3) and positive pressure guiding pipe (4), described downstream straight length (1) and upstream straight length (5) interconnect, described downstream straight length (1) and upstream straight length (5) are gripped with a nozzle (2) in its junction, it is characterized in that:
Described nozzle (2) includes linkage section (2.1) and extension (2.2), described linkage section (2.1) is one to be installed on the ring texture between downstream straight length (1) and upstream straight length (5), described extension (2.2) is one to be connected in the tubular structure on linkage section (2.1), and extension (2.2) are inserted in downstream straight length (1).
2. a kind of span pressure core level Long Nozzle device as claimed in claim 1, it is characterized in that: described negative pressure guiding pipe (3) inserts the just tube wall to extension (2.2) of interface of downstream straight length (1), and the central shaft of the central shaft of the hollow perforate of linkage section (2.1) and extension (2.2) and downstream straight length (1) and upstream straight length (5) is located along the same line.
3. a kind of span pressure core level Long Nozzle device as claimed in claim 1 or 2, it is characterized in that: described downstream straight length (1) and upstream straight length (5) all thicken near the tube wall of one end of junction, on the joint face of described downstream straight length (1), be provided with stepped hole one (1.2), on the joint face of described upstream straight length (5), be provided with stepped hole two (5.2), downstream straight length (1) is connected backward step hole one (1.2) and stepped hole two (5.2) and is combined to form a cell body that holds the linkage section (2.1) of nozzle (2) with upstream straight length (5).
4. a kind of span pressure core level Long Nozzle device as claimed in claim 1 or 2, it is characterized in that: the chamfering that the joint face of described downstream straight length (1) arranges near outer wall forms the conical surface one (1.1), the chamfering that the joint face of upstream straight length (5) arranges near outer wall forms the conical surface two (5.1), and downstream straight length (1) is connected rear cone one (1.1) with upstream straight length (5) and the conical surface two (5.1) is combined to form the annular recess that an xsect is del, in this annular recess, be provided with welding material (6).
5. a kind of span pressure core level Long Nozzle device as claimed in claim 3, it is characterized in that: downstream straight length (1) and upstream straight length (5) be away from being provided with chamfering near outer wall on the free end of junction, and the conical surface of this chamfering and this free-ended end face are 15 ° of angles.
6. a kind of span pressure core level Long Nozzle device as claimed in claim 4, it is characterized in that: downstream straight length (1) and upstream straight length (5) be away from being provided with chamfering near outer wall on the free end of junction, and the conical surface of this chamfering and this free-ended end face are 15 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752785.9U CN203605985U (en) | 2013-11-26 | 2013-11-26 | Span pressure measurement nuclear-grade large-diameter nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752785.9U CN203605985U (en) | 2013-11-26 | 2013-11-26 | Span pressure measurement nuclear-grade large-diameter nozzle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203605985U true CN203605985U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320752785.9U Expired - Fee Related CN203605985U (en) | 2013-11-26 | 2013-11-26 | Span pressure measurement nuclear-grade large-diameter nozzle device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203605985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441516A (en) * | 2016-07-01 | 2017-02-22 | 浙江大唐乌沙山发电有限责任公司 | System and method for improving feed water flow measuring precision by means of supercritical unit |
| CN108759940A (en) * | 2018-04-08 | 2018-11-06 | 江阴市节流装置厂有限公司 | A kind of adjustable flow rate-measuring device high pressure nozzle |
-
2013
- 2013-11-26 CN CN201320752785.9U patent/CN203605985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441516A (en) * | 2016-07-01 | 2017-02-22 | 浙江大唐乌沙山发电有限责任公司 | System and method for improving feed water flow measuring precision by means of supercritical unit |
| CN108759940A (en) * | 2018-04-08 | 2018-11-06 | 江阴市节流装置厂有限公司 | A kind of adjustable flow rate-measuring device high pressure nozzle |
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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: 20140521 Termination date: 20201126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |