CN211351115U - Electrode sealing structure of high-voltage electromagnetic flowmeter - Google Patents
Electrode sealing structure of high-voltage electromagnetic flowmeter Download PDFInfo
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- CN211351115U CN211351115U CN202020433069.4U CN202020433069U CN211351115U CN 211351115 U CN211351115 U CN 211351115U CN 202020433069 U CN202020433069 U CN 202020433069U CN 211351115 U CN211351115 U CN 211351115U
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Abstract
The utility model discloses a high-pressure electromagnetic flowmeter electrode seal structure, including lining, high-voltage electrode, its characterized in that: the front end part of the high-voltage electrode is in matched insertion connection with the lining, and the diameter of the high-voltage electrode gradually becomes thicker from the front part to the middle part; the middle part of the high-voltage electrode is provided with a frustum, the high-voltage electrode also comprises a second gasket which is matched with the frustum and annularly wraps the frustum, and the taper surface of the frustum is abutted against the inner slope surface of the second gasket; the utility model discloses an electromagnetic sealing structure adopts multiple compact structure to make high-voltage electromagnetic flowmeter when the field usage, can be totally effectual solution high-voltage electrode dielectric strength and the sealed problem under high-pressure state, thereby guarantee that high-voltage electromagnetic flowmeter's normal work closes precision and security performance.
Description
Technical Field
The utility model relates to a measure pipeline fluid flow's instrument, specifically speaking are high-voltage electromagnetic flowmeter with high pressure resistant sealed form.
Background
At present, an electromagnetic flowmeter is a most used flow meter, and a high-voltage electromagnetic flowmeter is an important one. However, the greatest problems are the insulation strength and sealing of the high-voltage electrode during field use. In field use, the pressure of the high-pressure fluid in the measuring pipeline is generally PN16MPa or PN25MPa, and sometimes even reaches PN32MPa or PN42 MPa. The sealing structure is that a cylindrical high-voltage electrode is inserted between the linings of the electromagnetic flowmeter, and single sealing is realized between the high-voltage electrode and the lining of the electromagnetic flowmeter. The insulating strength and the sealing are realized by the aid of the elasticity of the material of the high-voltage electromagnetic flowmeter lining and the interference fit between the high-voltage electrode rods, and axial sealing is realized between the bottom surface of the bottom of the high-voltage electrode and the high-voltage electromagnetic flowmeter lining through the fastening force of the external locking nut.
The sealing structure has the advantages that the lining of the high-voltage electromagnetic flowmeter and the material of the lining play an insulating role, and the sealing structure has the defects that the material has poor elasticity and small deformation, can work in a low-voltage working state, and has poor performance in a high-voltage working state; particularly, under a high-pressure working state, repeated pressurization and pressure relief easily generate fatigue deformation and lose elasticity, so that sealing failure is generated, and fluid leakage is caused; and the electrode is contacted with the measuring conduit, so that the electrode is communicated with the measuring conduit, the insulation strength of the electrode is reduced, and a measuring signal generated on the electrode is small and large and can not work for thousands of times. Moreover, if the pressure is too high or the sealing surface is seriously damaged, the pressure of the measured fluid is leaked, the outer shell is broken, the damage of a working site or the personal injury of site workers is caused, and a serious site accident is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the technical problem that above-mentioned prior art exists, provide a high-pressure electromagnetic flowmeter electrode seal structure of sealed effect is promoted along with the pressure improvement that awaits measuring to modified safe and reliable, simple structure.
The utility model provides a high-pressure electromagnetic flowmeter electrode seal structure, includes lining, the columniform high-voltage electrode of cross, and the cross tip is provided with a screw hole, its characterized in that: the front end part of the high-voltage electrode is in matched insertion connection with the lining, and the diameter of the high-voltage electrode gradually becomes thicker from the front part to the middle part; the middle part of the high-voltage electrode is provided with a frustum, the high-voltage electrode further comprises a second gasket which is matched with the frustum and annularly wraps the frustum, and the taper surface of the frustum is abutted to the inner slope surface of the second gasket.
Further, the liner is preferably made of F46 material, and the second gasket is preferably made of PeeK material.
Further, the taper of the front end part of the high-voltage electrode is optimally 2-5 degrees.
Further, the angle of the frustum is preferably 45-60 degrees.
Compared with the prior art, the utility model, following outstanding advantage has:
the utility model discloses an electromagnetic sealing structure, adopt multiple compact structure, from the tapered setting of tip before the high tension electrode, it is inseparabler to let lining and high tension electrode grafting part combine, the frustum design at electrode middle part, make self sealss structure can let the frustum at high tension electrode middle part under pressure inseparabler with the contact of second sealing washer, sealed effect is better, thereby make high tension electricity magnetic flowmeter when the field usage, can be totally effectual solution high tension electrode dielectric strength and the sealed problem under high-pressure state, thereby guarantee high tension electricity magnetic flowmeter's normal work close precision and security performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the original scheme;
fig. 3 is a schematic diagram of the high voltage electrode of the present invention.
Reference numerals: 2. a liner; 3. a high voltage electrode; 32. a front end portion; 34. a frustum; 4. a threaded hole; 6. and a second seal ring.
Detailed Description
The following detailed description of the embodiments of the present invention is provided for explaining the present invention, and the examples are not intended to limit the present invention, and the embodiments do not indicate specific techniques or conditions, and are performed according to the techniques or conditions described in the literature in the field or according to the product specification, and the apparatuses used are not indicated, and are all conventional products available on the market.
As shown in the attached figures 1-3, the electrode sealing structure of the high-voltage electromagnetic flowmeter comprises a lining 2 and a cross-shaped cylindrical high-voltage electrode 3, wherein a threaded hole 4 is formed in the end part of the cross shape, and is characterized in that: the front end part 32 of the high-voltage electrode 3 is matched and inserted with the lining 2, and the diameter of the high-voltage electrode gradually becomes thicker from the front to the middle; the middle part of the high-voltage electrode 3 is provided with a frustum 34, the high-voltage electrode further comprises a second gasket 6 which is matched with the frustum 34 and annularly wraps the frustum 34, and the taper surface of the frustum 34 is abutted to the inner slope surface of the second gasket 6.
Further, the liner 2 is made of F46 material, and the second gasket 6 is made of PeeK material.
Further, the taper of the front end part 32 of the high voltage electrode 3 is optimally 2-5 degrees.
Further, the angle of the frustum 34 is preferably 45 ° to 60 °.
The utility model discloses the design principle of scheme: the pressure of the fluid in the pipeline to be detected is certainly larger than the external pressure, and the pipeline is provided with a flexible lining of F46, so that under the action of the internal pressure, when the pressure is larger than the elastic force of the lining, the lining can be slowly pressed to the direction of the electrode;
the taper surface of the plug-in part arranged in the scheme can form a first reseal, so that the liner can be extruded to the part with a large diameter at the front end part under pressure after being deformed, and better sealing can be realized;
the plane of the frustum in the middle of the electrode is used as a second reseal, the electrode is movable relative to the pipeline, so the electrode can move away from the center of the pipeline under high pressure, but the movement is based on the compression of the lining, and the compression force can enable the lining to be combined with the plane of the frustum in the middle of the electrode more tightly;
the frustum at the middle part of the electrode is matched with the second sealing ring to form a third sealing, and when the second sealing ring presses the electrode to move together with the lining in a pressing mode, the second sealing ring is fixed, so that the conical surface of the frustum at the middle part of the high-voltage electrode is more tightly combined with the second sealing ring, and the sealing performance is better.
The utility model discloses, the multiple seal of adoption, based on simple structure, realized the pressure self sealss effect of electrode, and sealed effect is stronger along with the increase of pressure under the limit, has guaranteed the normal work precision and the safety of high-pressure electromagnetic flowmeter.
The above description should not be considered as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims (4)
1. The utility model provides a high-pressure electromagnetic flowmeter electrode seal structure, includes lining (2), the columniform high-voltage electrode of cross (3), and tip is provided with a screw hole (4) behind the cross, its characterized in that: the front end part (32) of the high-voltage electrode (3) is matched and spliced with the lining (2), and the diameter of the high-voltage electrode gradually becomes thicker from the front part to the middle part; the middle part of the high-voltage electrode (3) is provided with a frustum (34), the high-voltage electrode further comprises a second gasket (6) which is matched with the frustum (34) and annularly wraps the frustum (34), and the taper surface of the frustum (34) is abutted to the inner slope surface of the second gasket (6).
2. A high-pressure electromagnetic flowmeter electrode seal structure according to claim 1, characterized in that said liner (2) is preferably made of F46 material and said second gasket (6) is preferably made of PeeK material.
3. A high-voltage electromagnetic flowmeter electrode sealing structure according to claim 1, characterized in that the taper of the front end portion (32) of the high-voltage electrode (3) is optimally 2 ° -5 °.
4. A high-pressure electromagnetic flowmeter electrode seal structure according to claim 1, characterized in that the angle of the frustum (34) is preferably 45 ° -60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020433069.4U CN211351115U (en) | 2020-03-30 | 2020-03-30 | Electrode sealing structure of high-voltage electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020433069.4U CN211351115U (en) | 2020-03-30 | 2020-03-30 | Electrode sealing structure of high-voltage electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211351115U true CN211351115U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020433069.4U Active CN211351115U (en) | 2020-03-30 | 2020-03-30 | Electrode sealing structure of high-voltage electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211351115U (en) |
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2020
- 2020-03-30 CN CN202020433069.4U patent/CN211351115U/en active Active
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