CN210242891U - Safety protection device for high-voltage electromagnetic flowmeter - Google Patents
Safety protection device for high-voltage electromagnetic flowmeter Download PDFInfo
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- CN210242891U CN210242891U CN201921576656.2U CN201921576656U CN210242891U CN 210242891 U CN210242891 U CN 210242891U CN 201921576656 U CN201921576656 U CN 201921576656U CN 210242891 U CN210242891 U CN 210242891U
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Abstract
The utility model discloses a safety arrangement for high-voltage electromagnetic flowmeter, including the flowmeter body, be provided with measuring electrode on the flowmeter body, wherein, measuring electrode quilt cover is in a safety cover, and the safety cover is used for preventing from leaking from the high-pressure liquid that measuring electrode spilt, is provided with the relief valve on the safety cover, the relief valve is connected on the safety cover through getting to press the pipe, is provided with the pressure release passageway in the relief valve, and pressure release passageway and getting are pressed between the pipe and seal the isolation through the voltage limiting diaphragm that sets up, the pressure release passageway top set up the pressure release through-hole with external environment intercommunication, and the cross-sectional area of pressure release through-hole is greater than measuring electrode hole sectional area 40 times at least. The utility model is safe and reliable; simple structure and convenient installation.
Description
Technical Field
The utility model relates to a high-voltage electromagnetic flowmeter, in particular to a safety arrangement for high-voltage electromagnetic flowmeter.
Background
The electromagnetic flowmeter is mature in technology, and becomes a type of flow meter with the largest use amount in the global range due to excellent flow metering performance and wide fluid adaptability. Particularly in the subdivided field of high pressure fluid flow measurement, high pressure electromagnetic flow meters are the primary flow meters for use in the field. But during the use process, the biggest problem is the safety problem caused by the leakage inside the instrument. When the pressure measuring device is used on site, fluid in a measuring pipeline runs under pressure, and the site operation pressure with high pressure grade can reach 6000 PSI. Due to the instability of the field process flow, the flowmeter can operate at an overpressure level, and the risk of failure of the electrode sealing structure is increased. Once the electrode sealing structure fails, the pressurized fluid accumulates in the protective cover and reaches the pressure-bearing limit of the protective cover, the high-pressure fluid is sprayed out of the protective cover and possibly mixed with metal fragments, and serious field accidents such as damage of a working field or personal injury of workers are possibly caused.
Disclosure of Invention
An object of the utility model is to provide a safety arrangement for high-voltage electric-magnetic flow meter, when high-pressure fluid leaked the safety cover, high-voltage electric-magnetic flow meter's safety arrangement automatic action for the high-pressure medium provides the passageway of releasing, has guaranteed staff and on-the-spot safety.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a safety arrangement for high-voltage electric magnetic flowmeter, includes the flowmeter body, is provided with measuring electrode on the flowmeter body, wherein, measuring electrode quilt cover is in a safety cover, and the safety cover is used for preventing to leak from measuring electrode's high-pressure liquid, is provided with the relief valve on the safety cover, the relief valve is connected on the safety cover through getting to press the pipe, is provided with the pressure release passageway in the relief valve, and the pressure limiting diaphragm through setting up between pressure release passageway and the pressure getting pipe is sealed to be kept apart, and the pressure release passageway top sets up the pressure release through-hole with external environment intercommunication, and the cross-sectional area of pressure release through-hole is greater than measuring electrode hole sectional.
The scheme is further as follows: the pressure relief valve comprises a base sleeve and a compression nut, one end of the base sleeve is connected with the pressure taking pipe through a screw, a step platform is arranged in the base sleeve, the pressure limiting diaphragm is arranged on the step platform, the compression nut is screwed in and pressed on the pressure limiting diaphragm through the screw from the other end of the base sleeve, the compression nut is internally provided with a pressure relief channel, and the pressure relief through hole is formed in the inner side wall of the top end of the compression nut.
The scheme is further as follows: a metal compression ring is arranged between the pressure limiting diaphragm and the compression nut, and a polytetrafluoroethylene sealing gasket is arranged between the pressure limiting diaphragm and the step platform.
The scheme is further as follows: the pressure relief through holes are four in number and are arranged on the inner side wall of the top end of the compression nut in a cross mode.
The scheme is further as follows: the pressure limiting diaphragm is a 316 stainless steel sheet with the thickness of 0.5 mm.
The utility model has the advantages that: the method is safe and reliable; simple structure and convenient installation.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is the utility model discloses the pressure relief valve is connected inner structure sketch map with getting pressing the pipe.
Detailed Description
A safety protector for a high-voltage electromagnetic flowmeter, as shown in FIGS. 1 and 2, comprises a flowmeter body 1 having flanges 101 and 102 at both end sides of the body 1 for connection with a measurement pipe, a measurement electrode 2 provided on the flowmeter body, the measurement electrode 2 being inserted and fixed to the flowmeter body through a through hole provided in the flowmeter body, the through hole communicating with a fluid passage in the body, the diameter of the through hole inserted into the flowmeter being generally 3mm, wherein the measurement electrode is housed in a protective case 3 sealed to the flowmeter body by welding for preventing leakage of high-pressure liquid leaking from the measurement electrode, whereas when the internal seal of the meter is not tight due to a fluid pressure in the pipe exceeding the upper limit of the withstand voltage of the meter, high-pressure medium enters the protective case through an electrode mounting hole, since the diameter of the electrode mounting hole is only 3mm, the pressure of the medium entering the protective cover is greatly attenuated. When the pressure of the medium leaked in the protective cover is full, the pressure can still gradually rise to cause danger, therefore, a pressure relief valve 4 is arranged on the protective cover and is connected to the protective cover through a pressure taking pipe 5, the pressure taking pipe 5 is welded with the protective cover in a sealing way, a pressure relief channel 401 is arranged in the pressure relief valve, the pressure relief channel and the pressure taking pipe are isolated in a sealing way through a pressure limiting diaphragm 6, the pressure limiting diaphragm is made of a 316 stainless steel sheet with the thickness of 0.5mm, the top end of the pressure relief channel is provided with a pressure relief through hole 402 communicated with the external environment, the cross-sectional area of the pressure relief through hole is at least 40 times larger than the sectional area of a measuring electrode hole, when the pressure of the medium leaked in the protective cover reaches 0.29MPa, the pressure limiting diaphragm is pushed open, the medium can be discharged through the pressure relief channel and the pressure relief through hole 402, and because the cross-sectional area of the pressure relief through hole is, is a safe discharge.
In the embodiment, for convenience of installation, the pressure relief valve includes a base sleeve 403 and a compression nut 404, one end of the base sleeve 403 is connected with the pressure tapping pipe 5 through a screw, a step platform is arranged in the base sleeve, the pressure limiting diaphragm 6 is arranged on the step platform, the compression nut 404 is screwed in and pressed on the pressure limiting diaphragm 6 through the screw from the other end of the base sleeve, the pressure relief channel is arranged in the compression nut, and the pressure relief through hole 402 is arranged on the inner side wall of the top end of the compression nut. The diameter of the pressure relief through holes is 10mm, and the number of the pressure relief through holes is four, and the four pressure relief through holes are arranged on the inner side wall of the top end of the compression nut in a cross mode.
Wherein: be provided with metal clamp ring 7 between voltage limiting diaphragm and the gland nut, gland nut bottom face improves the leakproofness through the protruding pressure on metal clamp ring 7 of annular triangle-shaped who sets up, guarantees that the medium of leaking flows through the pressure release passageway, set up polytetrafluoroethylene sealed pad 8 between voltage limiting diaphragm and the step platform, polytetrafluoroethylene sealed pad has when the medium does not leak, and it is insulating that sealed isolation outside moisture advances the body and reduces the instrument body.
Claims (5)
1. The utility model provides a safety arrangement for high-voltage electric magnetic flowmeter, includes the flowmeter body, is provided with measuring electrode on the flowmeter body, its characterized in that, measuring electrode quilt cover is in a safety cover, and the safety cover is used for preventing from leaking the high-pressure liquid that spills from measuring electrode, is provided with the relief valve on the safety cover, the relief valve is connected on the safety cover through getting to press the pipe, is provided with the pressure release passageway in the relief valve, and the pressure limiting diaphragm through setting up between pressure release passageway and the pressure getting pipe is sealed to be kept apart, and the pressure release passageway top sets up the pressure release through-hole with external environment intercommunication, and the cross sectional area of pressure release through-hole is greater than measuring electrode.
2. The safety protection device according to claim 1, wherein the pressure relief valve comprises a base sleeve and a compression nut, one end of the base sleeve is connected with the pressure tapping pipe through a screw, a step platform is arranged in the base sleeve, the pressure limiting diaphragm is arranged on the step platform, the compression nut is screwed in from the other end of the base sleeve through the screw and presses on the pressure limiting diaphragm, the pressure relief channel is arranged in the compression nut, and the pressure relief through hole is arranged on the inner side wall of the top end of the compression nut.
3. The safety protection device according to claim 2, wherein a metal compression ring is arranged between the pressure limiting diaphragm and the compression nut, and a polytetrafluoroethylene sealing gasket is arranged between the pressure limiting diaphragm and the step platform.
4. The safety protection device according to claim 2, wherein the number of the pressure relief through holes is four, and four pressure relief through holes are criss-cross arranged on the inner side wall of the top end of the compression nut.
5. The safety protection device of claim 1, wherein the pressure limiting diaphragm is a sheet of 316 stainless steel having a thickness of 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921576656.2U CN210242891U (en) | 2019-09-23 | 2019-09-23 | Safety protection device for high-voltage electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921576656.2U CN210242891U (en) | 2019-09-23 | 2019-09-23 | Safety protection device for high-voltage electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210242891U true CN210242891U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921576656.2U Active CN210242891U (en) | 2019-09-23 | 2019-09-23 | Safety protection device for high-voltage electromagnetic flowmeter |
Country Status (1)
| Country | Link |
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| CN (1) | CN210242891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235386A (en) * | 2022-02-28 | 2022-03-25 | 艾肯（江苏）工业技术有限公司 | Test platform for verifying static pressure life of stop valve through fluid detection |
-
2019
- 2019-09-23 CN CN201921576656.2U patent/CN210242891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235386A (en) * | 2022-02-28 | 2022-03-25 | 艾肯（江苏）工业技术有限公司 | Test platform for verifying static pressure life of stop valve through fluid detection |
| CN114235386B (en) * | 2022-02-28 | 2022-05-13 | 艾肯（江苏）工业技术有限公司 | Test platform for verifying static pressure life of stop valve through fluid detection |
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