CN203287058U - Ceramic measuring pipe for electromagnetic flowmeter - Google Patents
Ceramic measuring pipe for electromagnetic flowmeter Download PDFInfo
- Publication number
- CN203287058U CN203287058U CN2013203000466U CN201320300046U CN203287058U CN 203287058 U CN203287058 U CN 203287058U CN 2013203000466 U CN2013203000466 U CN 2013203000466U CN 201320300046 U CN201320300046 U CN 201320300046U CN 203287058 U CN203287058 U CN 203287058U
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- pipe
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- ceramic measuring
- measuring tube
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- 239000000919 ceramic Substances 0.000 title claims abstract description 59
- 239000012530 fluid Substances 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 231100000078 corrosive Toxicity 0.000 abstract 1
- 231100001010 corrosive Toxicity 0.000 abstract 1
- 239000011152 fibreglass Substances 0.000 description 8
- 230000035939 shock Effects 0.000 description 7
- 210000001503 Joints Anatomy 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound 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- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound 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Abstract
The utility model discloses a ceramic measuring pipe for an electromagnetic flowmeter, which relates to the technical field of fluid measurement, and solves the technical problems that an existing ceramic measuring pipe is likely to leak fluid and poor in heat-resisting impact property and that a single material electrode is not suitable for different corrosive media. The ceramic measuring pipe is composed of a pipe body the left and right ends of which are opened, the pipe body is divided into three pipe sections along an axial direction, and the three pipe sections comprise a left pipe section, a middle pipe section and a right pipe section successively from left to right; the left pipe section is divided into left and right sub-pipe sections, the outer diameter of the left sub-pipe section is greater than or equal to that of the right sub-pipe section, and the outer diameter and the pipe wall thickness of the right sub-pipe section gradually increase from right to left; the right pipe section is divided into left and right sub-pipe sections, the outer diameter of the right sub-pipe section is greater than or equal to that of the left sub-pipe section, and the outer diameter and the pipe wall thickness of the left sub-pipe section gradually increase from left to right. The measuring pipe provided by the utility model has a good heat-resisting impact property and can effectively prevent fluid from leaking.
Description
Technical field
The utility model relates to the fluid measurement technology, particularly relates to a kind of technology of the ceramic measuring tube for electromagnetic flowmeter.
Background technology
Ceramic measuring tube has the acids of being able to bear strong corrosion and wear-resistant corrosion resistant advantage, is applicable to measure the deep-etching acids such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluorite, and contains paper pulp, ore pulp, coal water slurry, mud of bases, solid particle, fibrous fluid media (medium) etc.Be widely used in the flow measurement in the fields such as papermaking, mining, metallurgy, Coal Chemical Industry, food, medical and health.
As shown in Figure 2, the patent No. is that 86105077 Chinese patent has disclosed a kind of electromagnetic flowmeter, the two ends of the ceramic measuring tube that this flowmeter adopts have the flange 221 of outward radial bending, flange and target pipe fitting by the ceramic measuring tube two ends during use achieve a butt joint, when this ceramic measuring tube uses, stress all concentrates on the flange at ceramic measuring tube two ends, and thermal shock resistance is poor, and body is easily cracked.
as shown in Figure 3, the patent No. is that 90207310.9 Chinese patent has disclosed a kind of ceramic electromagnetic flow meter, the ceramic measuring tube 331 that this flowmeter adopts is two ends straight-through pipes without flange, ceramic measuring tube 331 is placed in a fiberglass sheath 332, adopt the fiberglass pouring type that ceramic measuring tube and fiberglass sheath are combined as a whole, achieve a butt joint by fiberglass sheath and target pipe fitting during use, because stress concentrates on fiberglass sheath, therefore the thermal shock resistance of ceramic measuring tube is better, body is not easily broken, but the combination of ceramic measuring tube and fiberglass sheath is insecure, can be subject to the impulsive force of external force and internal fluid in actual applications, reach the impact of the pottery factors such as thermal expansivity different from glass-reinforced plastic material, easily because producing gap between ceramic measuring tube and fiberglass sheath, cause seal failure, thereby generation fluid leakage, and have influence on the precision of measurement data.
as shown in Figure 4, the patent No. is that 93101261.9 Chinese patent has disclosed a kind of electromagnetic flowmeter, the ceramic measuring tube 441 that this flowmeter adopts is placed in a pipe flange 442, the outer, two ends of ceramic measuring tube 441 is formed with chamfering, by between chamfering, O-ring seal 443 being set outside the inside surface at pipe flange 442 and ceramic measuring tube 441 two ends, realize the antiseep sealing between ceramic measuring tube and pipe flange, achieve a butt joint by pipe flange and target pipe fitting during use, because stress concentrates on pipe flange, therefore the thermal shock resistance of ceramic measuring tube is better, body is not easily broken, this flowmeter is noticed the axial compressive force of pipe flange on seal approach, therefore need to make between the inside surface of ceramic measuring tube and pipe flange and leave the gap of 0.5 millimeter, but this flowmeter is not considered the pressure of internal fluid, after the O-ring seal that arranges between chamfering outside pipe flange inside surface and ceramic measuring tube two ends is subject to radially hydrodynamic pressure, be easy to cause seal failure, thereby generation fluid leakage, and have influence on the precision of measurement data.
The utility model content
For the defect that exists in above-mentioned prior art, it is better that technical problem to be solved in the utility model is to provide a kind of thermal shock resistance, body is not easily broken, and can effectively avoid fluid leakage, improves the ceramic measuring tube that is used for electromagnetic flowmeter of measure data precision.
In order to solve the problems of the technologies described above, a kind of ceramic measuring tube for electromagnetic flowmeter provided by the utility model, this ceramic measuring tube is the body of a left and right both ends open, it is characterized in that: the body of this ceramic measuring tube is divided into three pipeline sections vertically, respectively is from left to right left pipeline section, middle pipeline section, right pipeline section;
Described left pipeline section is divided into right two the sub-pipeline sections of a first from left, and the external diameter of left sub-pipeline section wherein is more than or equal to the external diameter of right sub-pipeline section, and external diameter and the pipe thickness of right sub-pipeline section wherein all increase progressively from right to left;
Described right pipeline section is divided into right two the sub-pipeline sections of a first from left, and the external diameter of right sub-pipeline section wherein is more than or equal to the external diameter of left sub-pipeline section, and external diameter and the pipe thickness of left sub-pipeline section wherein all increase progressively from left to right.
Further, the internal diameter of described left pipeline section increases progressively from right to left, and the internal diameter of described right pipeline section increases progressively from left to right.
Further, the inwall of described left pipeline section and the inwall of right pipeline section, and the angle between the ceramic measuring tube central axis is 15 ± 5 degree.
Further, the outer wall of the outer wall of the right sub-pipeline section of described left pipeline section and the left sub-pipeline section of right pipeline section, and the angle between the ceramic measuring tube central axis is 30 ± 10 degree.
Further, offer at least one electrode hole on the tube wall of described middle pipeline section, the hole heart axes of described electrode hole intersects with the ceramic measuring tube central axis and is mutually vertical.
Further, the outer wall of described middle pipeline section is provided with the pit of at least one radial depressions, is smooth flat at the bottom of the hole of each pit, and the aperture, the outside of each electrode hole lays respectively in each pit.
The ceramic measuring tube that is used for electromagnetic flowmeter that the utility model provides, by axially anti-and radial compression force, the optimum mechanical structure design of impulsive force, end face and target pipe fitting by the ceramic measuring tube two ends during use achieve a butt joint, can effectively avoid fluid leakage, improve measure data precision, and adopt left pipeline section, the right pipeline section of pipe thickness gradual change design can tackle larger axial impact force, so thermal shock resistance is higher, body is not easily broken.
Description of drawings
Fig. 1 is the main pseudosection of the ceramic measuring tube that is used for electromagnetic flowmeter of the utility model embodiment;
Fig. 2, Fig. 3, Fig. 4 are the main pseudosections of three kinds of ceramic measuring tubes adopting of existing electromagnetic flowmeter.
Embodiment
Below in conjunction with description of drawings, embodiment of the present utility model is described in further detail, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof, all should list protection domain of the present utility model in.
As shown in Figure 1, a kind of ceramic measuring tube for electromagnetic flowmeter that the utility model embodiment provides, this ceramic measuring tube is the body of a left and right both ends open, it is characterized in that: the body of this ceramic measuring tube is divided into three pipeline sections vertically, respectively is from left to right left pipeline section 1, middle pipeline section 2, right pipeline section 3;
Described left pipeline section 1 is divided into right two the sub-pipeline sections of a first from left, and the external diameter of left sub-pipeline section 11 wherein is more than or equal to the external diameter of right sub-pipeline section 12, and external diameter and the pipe thickness of right sub-pipeline section 12 wherein all increase progressively from right to left;
Described right pipeline section 3 is divided into right two the sub-pipeline sections of a first from left, and the external diameter of right sub-pipeline section 31 wherein is more than or equal to the external diameter of left sub-pipeline section 32, and external diameter and the pipe thickness of left sub-pipeline section 32 wherein all increase progressively from left to right.
In the utility model embodiment, the internal diameter of described left pipeline section 1 increases progressively from right to left, and the internal diameter of described right pipeline section 3 increases progressively from left to right.
In the utility model embodiment, the right side of the left side of described left pipeline section 1 and right pipeline section 3, respectively be provided with the steps type seal circle mounting groove 4 around ceramic measuring tube central axis one circle.
In the utility model embodiment, offer at least one electrode hole 5 on the tube wall of described middle pipeline section 2, the hole heart axes of described electrode hole 5 intersects with the ceramic measuring tube central axis and is mutually vertical.
The outer wall of described middle pipeline section 2 is provided with the pit of at least one radial depressions, is used for placing mechanical seal ring, is smooth flat at the bottom of the hole of each pit, and the aperture, the outside of each electrode hole 5 lays respectively in each pit.
when the utility model embodiment uses, insert O-ring seal in the steps type seal circle mounting groove 4 of ceramic measuring tube two ends end face, insert potential electrode in electrode hole, the end face at ceramic measuring tube two ends docks with the target pipe fitting, O-ring seal by ceramic measuring tube two ends end face is realized sealing, after fluid flows into from left pipeline section, because the inner chamber of left pipeline section shrinks from left to right, the flow velocity of fluid can be accelerated gradually, during fluid flows into after pipeline section flow velocity reach the highest, the quickening of flow velocity also helps the measuring accuracy of potential electrode, the flow speed data of middle pipeline section inner fluid is in conjunction with the degree of shrinkage of left pipeline section inner chamber, can converse easily the actual flow velocity of detected fluid, during fluid flows out after pipeline section, along with the inner chamber of the expansion outflow gradually from left to right of right pipeline section, its flow velocity also slows down gradually, return to original flow velocity after flowing out right pipeline section.
In the utility model embodiment, the inwall of the inwall of described left pipeline section 1 and right pipeline section 3, and the angle between the ceramic measuring tube central axis is 15 ± 5 degree, this angle too small (such as less than 10 degree) does not almost have help to the raising of measuring accuracy, this angle excessive (such as greater than 20 degree) can affect the wall thickness of left pipeline section, right pipeline section, thereby has influence on the thermal shock resistance of ceramic measuring tube.
In the utility model embodiment, the outer wall of the outer wall of the right sub-pipeline section 12 of described left pipeline section and the left sub-pipeline section 32 of right pipeline section, and the angle between the ceramic measuring tube central axis is 30 ± 10 degree, this angle too small can cause ceramic measuring tube integral body long, this angle is crossed conference affects thermal shock resistance, can cause middle pipeline section and left pipeline section, right pipeline section joint portion easily cracked.
Claims (6)
1. ceramic measuring tube that is used for electromagnetic flowmeter, this ceramic measuring tube is the body of a left and right both ends open, it is characterized in that: the body of this ceramic measuring tube is divided into three pipeline sections vertically, respectively is from left to right left pipeline section, middle pipeline section, right pipeline section;
Described left pipeline section is divided into right two the sub-pipeline sections of a first from left, and the external diameter of left sub-pipeline section wherein is more than or equal to the external diameter of right sub-pipeline section, and external diameter and the pipe thickness of right sub-pipeline section wherein all increase progressively from right to left;
Described right pipeline section is divided into right two the sub-pipeline sections of a first from left, and the external diameter of right sub-pipeline section wherein is more than or equal to the external diameter of left sub-pipeline section, and external diameter and the pipe thickness of left sub-pipeline section wherein all increase progressively from left to right.
2. the ceramic measuring tube for electromagnetic flowmeter according to claim 1, it is characterized in that: the internal diameter of described left pipeline section increases progressively from right to left, and the internal diameter of described right pipeline section increases progressively from left to right.
3. the ceramic measuring tube for electromagnetic flowmeter according to claim 2 is characterized in that: the inwall of described left pipeline section and the inwall of right pipeline section, and the angle between the ceramic measuring tube central axis is 15 ± 5 degree.
4. according to claim 1 and 2 or 3 described ceramic measuring tubes for electromagnetic flowmeter, it is characterized in that: the outer wall of the outer wall of the right sub-pipeline section of described left pipeline section and the left sub-pipeline section of right pipeline section, and the angle between the ceramic measuring tube central axis is 30 ± 10 degree.
5. according to claim 1 and 2 or 3 described ceramic measuring tubes for electromagnetic flowmeter, it is characterized in that: offer at least one electrode hole on the tube wall of described middle pipeline section, the hole heart axes of described electrode hole intersects with the ceramic measuring tube central axis and is mutually vertical.
6. the ceramic measuring tube for electromagnetic flowmeter according to claim 5, it is characterized in that: the outer wall of described middle pipeline section is provided with the pit of at least one radial depressions, be smooth flat at the bottom of the hole of each pit, the aperture, the outside of each electrode hole lays respectively in each pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203000466U CN203287058U (en) | 2013-05-28 | 2013-05-28 | Ceramic measuring pipe for electromagnetic flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203000466U CN203287058U (en) | 2013-05-28 | 2013-05-28 | Ceramic measuring pipe for electromagnetic flowmeter |
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| Publication Number | Publication Date |
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| CN203287058U true CN203287058U (en) | 2013-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292853A (en) * | 2013-05-28 | 2013-09-11 | 浦瑞斯仪表（上海）有限公司 | Ceramic measuring tube for electromagnetic flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292853A (en) * | 2013-05-28 | 2013-09-11 | 浦瑞斯仪表（上海）有限公司 | Ceramic measuring tube for electromagnetic flowmeter |
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| C14 | Grant of patent or utility model | ||
| 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: 20131113 Termination date: 20210528 |