CN108761140B - Flow divider - Google Patents
Flow divider Download PDFInfo
- Publication number
- CN108761140B CN108761140B CN201810988352.0A CN201810988352A CN108761140B CN 108761140 B CN108761140 B CN 108761140B CN 201810988352 A CN201810988352 A CN 201810988352A CN 108761140 B CN108761140 B CN 108761140B
- Authority
- CN
- China
- Prior art keywords
- voltage sampling
- screw
- platform
- electrode
- male
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention provides a current divider, which comprises an electrode, wherein the electrode comprises a current input platform and a voltage sampling platform, and a voltage sampling screw is connected to the voltage sampling platform. The invention can avoid the influence of external mechanical application on the voltage sampling screw, and has higher measurement precision and reliability.
Description
Technical Field
The invention relates to a current measuring device, in particular to a current divider.
Background
A shunt is a device for measuring direct current and is made according to the principle that when direct current passes through a resistor, voltage is generated across the resistor.
In the prior art, for example, patent of invention with domestic publication number CN202102011U discloses a high-precision separator. Electrodes are arranged on two sides of the shunt, a resistor disc is welded between the electrodes at two ends, a screw hole is formed in each electrode, a screw and a gasket are additionally arranged in each screw hole, and a lead used for voltage sampling is fastened through the screws and serves as a voltage sampling point of the shunt.
The screws usually protrude out of the electrodes at the two ends, and after the calibrated shunt is applied to terminal equipment or works for a period of time, the shunt is easily affected by the outside to generate collision or vibration to cause deformation in the production, transportation, installation and working environments of the shunt, so that precision deviation and poor reliability are caused.
Disclosure of Invention
In view of this, it is necessary to provide a shunt, which can prevent the voltage sampling screw from being affected by external mechanical application, and has higher measurement accuracy and reliability.
The invention provides a current divider, which comprises an electrode, wherein the electrode comprises a current input platform and a voltage sampling platform, and a voltage sampling screw is connected to the voltage sampling platform.
Furthermore, the height of the voltage sampling platform is lower than that of the current input platform, the voltage sampling platform is connected with the current input platform through a connecting surface, and the top end of the voltage sampling screw protrudes out of the voltage sampling platform.
Further, the connecting surface is an inclined surface, or the connecting surface is a vertical surface.
Further, the shunt also comprises a lead, the lead is connected with the voltage sampling screw, and when the lead rotates to a preset angle in one direction, the connecting surface limits the lead to continue rotating.
Furthermore, a lead fixing structure is arranged on the connecting surface and used for fixing the lead.
Further, the top end of the voltage sampling screw sinks below the upper surface of the voltage sampling platform.
Further, the height of the voltage sampling platform is equal to the height of the current input platform, or the height of the voltage sampling platform is smaller than the height of the current input platform.
Furthermore, the voltage sampling screw comprises a screw and a male and female isolation column, the external thread of the male and female isolation column is connected with the internal thread of the electrode, and the external thread of the screw is connected with the internal thread of the male and female isolation column.
Furthermore, insulating glue is arranged at the connection part of the external threads of the yin-yang isolation column and the internal threads of the electrode and between the yin-yang isolation column and the voltage sampling platform.
Furthermore, the threads of the connection part of the male and female isolation columns and the electrode are connected and reinforced by adopting insulating screw glue, and the length of one end of the male and female isolation columns with the external threads is greater than the depth of a screw hole of the electrode with the internal threads.
Compared with the prior art, the invention has the beneficial effects that: the current input platform can be used as the protection of the voltage sampling screw, the voltage sampling screw can be prevented from being influenced by external mechanical stress, the accuracy of the shunt after transportation in installation or long-term use is guaranteed, and the reliability is improved.
Drawings
Fig. 1 is a schematic structural view of a flow divider according to a first embodiment of the present invention.
Fig. 2 is a partially schematic view of an alternative to the first embodiment.
Fig. 3 is a partial schematic view of another alternative to the first embodiment.
Fig. 4 is a schematic structural view of a flow divider according to a second embodiment of the present invention.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It should be noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a shunt 100 according to a first embodiment of the present invention. The shunt 100 comprises two electrodes 10, a plurality of resistance sheets 20 connected between the two electrodes 10, and a voltage sampling screw 30, wherein each electrode 10 can be connected with the voltage sampling screw 30, and the voltage sampling screw 30 can be connected with a lead.
The electrode 10 is provided with a current input platform 11 and a voltage sampling platform 12, the height of the voltage sampling platform 12 is lower than that of the current input platform 11, the height difference between the current input platform and the voltage sampling platform is L, the voltage sampling platform 12 is provided with a screw hole 121 for connecting a voltage sampling screw 30, the screw thread of the voltage sampling screw 30 is connected with the screw hole 121 so that the voltage sampling screw 30 is fixed on the voltage sampling platform 12, and the top end of the voltage sampling screw 30 protrudes out of the voltage sampling platform 12. Wherein the voltage sampling platform 12 can be located inside the electrodes 10, and the resistive sheet 20 is connected to the voltage sampling platforms 12 of the two electrodes 10.
In the present embodiment, the voltage sampling platform 12 and the current input platform 11 are connected by a connection surface 13, wherein the connection surface 13 may be a vertical surface or an inclined surface, and the inclined surface may be inclined inward or inclined outward, which is not limited herein.
In the prior art, for example, CN202102011U fixes the lead through a screw and a pad, the top end of a voltage sampling screw protrudes above the electrode plane, and the lead has a possibility of rotating 360 degrees in the plane direction, so that the included angle between the leads connected to two electrodes is variable, and the included angle between the two leads cannot be determined, which results in high unrepeatability and uncertainty of the shunt sampling voltage, and thus reduces the sampling precision. In order to prevent the lead from rotating 360 degrees more reliably, in this embodiment, the horizontal distance from the voltage sampling screw 30 to the connection surface 13 may be controlled, or a lead fixing structure may be provided on the connection surface 13, and the lead may be fixed on the lead fixing structure, so that when the lead rotates to a predetermined angle in one direction, the connection surface 13 restricts the lead from continuing to rotate, and the rotational freedom of the lead may be reduced, thereby ensuring that the voltage sampled by the shunt 100 has high repeatability and certainty, and improving the sampling precision and long-term reliability.
In this embodiment, the voltage sampling screw 30 includes a screw 31 and a male-female isolation column 32, wherein the male-female isolation column 32 includes a first end 321 and a second end 322, the first end 321 and the second end 322 can be connected by an annular horizontal plane 323, an external thread is provided outside the first end 321, an internal thread is provided at the second end 322, an external diameter of the second end 322 is greater than an external diameter of the first end 321, the external thread of the male-female isolation column 32 is connected with the internal thread of the screw hole 121 of the electrode 10, the external thread of the screw 31 is connected with the internal thread of the male-female isolation column 32, when the male-female isolation column 32 is connected to the screw hole 121 of the electrode 11, at least the second end 32 protrudes from the voltage sampling platform 12, and a top end of the screw 31 is lower than a height of the voltage sampling platform 12.
In the prior art, because the head of the screw is overlapped with the lead terminal and the gasket, the area of the surface which is finally contacted with the electrode is larger, the sampling voltage is not the voltage of one point any more but becomes the voltage of a larger area, the uncertainty of voltage sampling is increased, the sampling is not accurate enough, and the voltage sampling precision is influenced finally by the uncertainty of contact resistance and the uncertainty of thermoelectric force in the working process of the shunt.
In order to avoid the above problems, in the present embodiment, as shown in fig. 2, optionally, insulating glue 33 is provided at a connection portion between the external threads of the male and female isolation pillars 32 and the internal threads of the electrode 10, and between the male and female isolation pillars 32 and the voltage sampling platform 12, through the insulating glue 33, not only can a gap between the thread portions be filled so as to connect and reinforce the male and female isolation pillars 32 and the electrode 11, but also only the bottom surface of the first end 321 of the male and female isolation pillars 32 can be in contact with the bottom surface of the screw hole 121, so that the contact area of the voltage sampling screw 30 and the electrode 10 is minimized, the sampling voltage is a voltage that can be regarded as a point, the consistency of voltage sampling is improved, the accuracy of the sampling voltage is improved, and the influence of potential error caused by heating can be reduced.
In this embodiment, as shown in fig. 3, the length of the first end 321 of the male and female isolation pillars 32 is greater than the depth of the screw hole 121 of the electrode 10, and the screw thread at the connection between the male and female isolation pillars 32 and the electrode 10 is reinforced by the insulating thread compound 34, which can also achieve the above effect.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a shunt 200 according to a second embodiment of the present invention. The present embodiment is different from the first embodiment in that: the present embodiment is in the form of a counterbore. It should be understood that some corresponding structures applicable to the first embodiment may be correspondingly applicable to the present embodiment.
The voltage sampling platform 112 of the electrode 110 included in the current divider 200 of the present embodiment is provided with an accommodating hole 1121, the depth of the accommodating hole 1121 is greater than the height of the voltage sampling screw 130, and the voltage sampling screw 130 is accommodated in the accommodating hole 1121, so that the top end of the voltage sampling screw 130 sinks below the upper surface 1122 of the voltage sampling platform 112, which can also prevent the voltage sampling screw 130 from being affected by external mechanical applications.
In this embodiment, the height of the voltage sampling platform 112 is equal to the height of the current input platform 111, or the height of the voltage sampling platform 112 is smaller than the height of the current input platform 111.
Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.
Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A shunt comprises an electrode, wherein the electrode comprises a current input platform and a voltage sampling platform, and a voltage sampling screw is connected to the voltage sampling platform, the top of the voltage sampling screw is lower than the height of the current input platform, the height of the voltage sampling platform is lower than the height of the current input platform, the voltage sampling platform is connected with the current input platform through a connecting surface, the top end of the voltage sampling screw protrudes out of the voltage sampling platform, the shunt further comprises a lead wire, the lead wire is connected with the voltage sampling screw, when the lead wire rotates to a preset angle in one direction, the connecting surface limits the lead wire to continue rotating, wherein the top of the voltage sampling platform is open and is not shielded by the current input platform; the voltage sampling screw comprises a screw and a male and female isolation column, the external thread of the male and female isolation column is connected with the internal thread of the electrode, the external thread of the screw is connected with the internal thread of the male and female isolation column, and the joint of the external thread of the male and female isolation column and the internal thread of the electrode is provided with insulating glue; and the threads at the joint of the male and female isolation columns and the electrode are connected and reinforced by adopting insulating screw glue, and the length of one end of the male and female isolation columns with the external threads is greater than the depth of a screw hole of the electrode with the internal threads.
2. The shunt of claim 1, wherein said connection surface is a beveled surface or said connection surface is a vertical surface.
3. The shunt according to claim 1, wherein a lead securing structure is provided on the attachment surface for securing the lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988352.0A CN108761140B (en) | 2018-08-28 | 2018-08-28 | Flow divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988352.0A CN108761140B (en) | 2018-08-28 | 2018-08-28 | Flow divider |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108761140A CN108761140A (en) | 2018-11-06 |
| CN108761140B true CN108761140B (en) | 2022-04-15 |
Family
ID=63967517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810988352.0A Active CN108761140B (en) | 2018-08-28 | 2018-08-28 | Flow divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108761140B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116449064B (en) * | 2023-03-12 | 2023-10-31 | 深圳市开步电子有限公司 | Shunt, electric equipment and energy storage equipment thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072291A (en) * | 1991-11-07 | 1993-05-19 | 梅兰日兰公司 | The screw terminal that is used for a kind of molded insulating case electrical switchgear device |
| CN202102011U (en) * | 2011-05-26 | 2012-01-04 | 山西兴永明仪器仪表有限责任公司 | High-precision shunt |
| KR200464646Y1 (en) * | 2012-07-17 | 2013-01-11 | 권영로 | Power controller for distributing case |
| CN205539089U (en) * | 2016-04-19 | 2016-08-31 | 温州源文电气科技有限公司 | Draw -in groove type copper -manganese shunt |
| CN206388861U (en) * | 2016-12-30 | 2017-08-08 | 浙江君工精密合金有限公司 | Copper-manganese still |
| CN206920489U (en) * | 2016-12-30 | 2018-01-23 | 浙江君工精密合金有限公司 | A kind of new copper-manganese still |
-
2018
- 2018-08-28 CN CN201810988352.0A patent/CN108761140B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072291A (en) * | 1991-11-07 | 1993-05-19 | 梅兰日兰公司 | The screw terminal that is used for a kind of molded insulating case electrical switchgear device |
| CN202102011U (en) * | 2011-05-26 | 2012-01-04 | 山西兴永明仪器仪表有限责任公司 | High-precision shunt |
| KR200464646Y1 (en) * | 2012-07-17 | 2013-01-11 | 권영로 | Power controller for distributing case |
| CN205539089U (en) * | 2016-04-19 | 2016-08-31 | 温州源文电气科技有限公司 | Draw -in groove type copper -manganese shunt |
| CN206388861U (en) * | 2016-12-30 | 2017-08-08 | 浙江君工精密合金有限公司 | Copper-manganese still |
| CN206920489U (en) * | 2016-12-30 | 2018-01-23 | 浙江君工精密合金有限公司 | A kind of new copper-manganese still |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108761140A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203405507U (en) | Integrally cast electronic voltage transformer for detecting current | |
| JP2017212297A (en) | Shunt resistor and mounting structure for shunt resistor | |
| CN108761140B (en) | Flow divider | |
| JP6850583B2 (en) | socket | |
| JP2017026359A (en) | Water quality sensor | |
| JPS63222219A (en) | Vortex flowmeter | |
| CN118293897A (en) | Hemispherical resonant gyro with integrated structure | |
| JP6232077B2 (en) | Method for manufacturing acceleration sensor | |
| JP2989186B2 (en) | probe | |
| JP2018136277A (en) | Method of manufacturing physical quantity sensor device and physical quantity sensor device | |
| JP2005221259A (en) | Pressure sensor | |
| JP2017037039A (en) | Physical quantity sensor device and method for manufacturing physical quantity sensor device | |
| CN107462916B (en) | Energy response optimizing device for GM counting tube | |
| US4027534A (en) | Electrode device for monitoring liquid levels | |
| US3103002A (en) | Capacitive fluid level sensing apparatus | |
| KR20160002783U (en) | Test terminal screw for electronic power meter | |
| JP6441122B2 (en) | Terminal unit and resistance device | |
| JP2523772B2 (en) | Clip type capacitive strain gauge | |
| JPH1068645A (en) | Sensor mounting plate sensor unit, and flow velocity sensor module | |
| CN108731706B (en) | Sensor | |
| US2656444A (en) | Pressure sensitive resistor | |
| WO2019150871A1 (en) | Pressure sensor | |
| US20120182679A1 (en) | Feed-through assembly | |
| JP7366781B2 (en) | Board fixture and current detection device | |
| CN207407962U (en) | A kind of fuel tank for automobile liquid level sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Units B1 and B2, Building 13, 18th Floor, 19th Floor, 1st Floor, Baoneng Science and Technology Park, Qinghu Community, Longhua Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: C&B ELECTRONICS (S.Z.) Co.,Ltd. Address before: 518000 1001, building 1, colorful science and Technology City, high tech park, Longhua District, Luhu community, Guanhu street, Longhua District, Bao'an District, Shenzhen, Guangdong Province Patentee before: C&B ELECTRONICS (S.Z.) Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |