CN113092843A - Pressure plate voltage measuring device - Google Patents
Pressure plate voltage measuring device Download PDFInfo
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- CN113092843A CN113092843A CN202110368205.5A CN202110368205A CN113092843A CN 113092843 A CN113092843 A CN 113092843A CN 202110368205 A CN202110368205 A CN 202110368205A CN 113092843 A CN113092843 A CN 113092843A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
- G01R19/0076—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00 using thermionic valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
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- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention relates to the technical field of voltage measurement, in particular to a pressure plate voltage measuring device. The pressure plate voltage measuring device comprises a measuring instrument, a detecting component and a grounding component, wherein the measuring instrument is provided with a detecting port and a grounding port and is used for displaying the voltage value of the end to be detected of the pressure plate; one end of the detection assembly is connected to the detection port, and the other end of the detection assembly can be abutted against the end to be detected of the pressing plate so as to lead the voltage of the end to be detected of the pressing plate into the measuring instrument; the grounding assembly comprises a first wire, a banana plug and a banana socket which are matched, and the tail part of the banana plug is connected to the grounding port through the first wire; the connecting hole and the threaded hole are respectively formed in the two ends of the banana socket, the head of the banana plug can be inserted into the connecting hole of the banana socket, and the top of the screen cabinet grounding screw can be in threaded connection with the threaded hole. According to the invention, the connection between the threaded hole and the grounding screw rod and the connection between the banana plug and the connecting hole are adopted, so that the grounding is firmer, and the efficiency of measuring the voltage of the pressing plate is improved.
Description
Technical Field
The invention relates to the technical field of voltage measurement, in particular to a pressure plate voltage measuring device.
Background
Before the tripping outlet pressing plate of the relay protection device is put into use, whether different polarity voltage exists at two ends of the tripping outlet pressing plate needs to be measured, and the corresponding tripping outlet pressing plate is allowed to be put into use when the different polarity voltage does not exist. At present, a universal meter is often used in a transformer substation to measure voltages at two ends of a tripping outlet pressing plate, an operator needs to measure two ends of the pressing plate one by one and manually judge whether the tripping outlet pressing plate has different polarities. In actual operation, because clamp plate structure and screen cabinet ground point design are different, have the unmatched problem with the universal meter pen-shape metre, the device of measuring clamp plate voltage that has for this reason cliies screen cabinet ground screw through the alligator clip in order to guarantee that ground connection is convenient, nevertheless because the alligator clip is only pressing from both sides the top at ground screw, leads to it to break away from screen cabinet ground screw easily after receiving external force, and then leads to ground connection insecure and contact failure to the measuring result of influence to clamp plate voltage.
Disclosure of Invention
The invention aims to provide a pressure plate voltage measuring device which can ensure that the grounding is firmer through the connection of a threaded hole and a grounding screw and the connection of a banana plug and a connecting hole, and improves the efficiency of measuring the pressure plate voltage.
In order to achieve the purpose, the invention adopts the following technical scheme:
a platen voltage measurement device comprising:
the measuring instrument is provided with a detection port and a grounding port and is used for displaying the voltage value of the to-be-detected end of the pressing plate;
one end of the detection component is connected to the detection port, and the other end of the detection component can be abutted against the end to be detected of the pressing plate so as to lead the voltage of the end to be detected of the pressing plate into the measuring instrument;
the grounding assembly comprises a first wire, a matched banana plug and a banana socket, and the tail part of the banana plug is connected to the grounding port through the first wire; the two ends of the banana socket are respectively provided with a connecting hole and a threaded hole, the head of the banana plug can be inserted into the connecting hole of the banana socket, and the top of the grounding screw rod of the screen cabinet can be in threaded connection with the threaded hole.
Preferably, the detection assembly comprises a measuring head, an insulating holding rod and a second lead, one end of the measuring head can be connected with the end to be detected of the pressing plate, and the other end of the measuring head is fixed at one end of the insulating holding rod; the second lead penetrates through the insulating holding rod and is fixedly connected with the measuring head and the detection port respectively.
Preferably, the measuring head comprises a cylindrical probe and a measuring card, and the cylindrical probe can be inserted into a to-be-detected opening of the spring type pressing plate; one end of the measuring card is fixedly connected with one end, close to the insulating holding rod, of the cylindrical probe, and the other end of the measuring card is provided with a U-shaped notch which can be clamped outside a to-be-detected column of the connecting piece type pressing plate.
Preferably, the cylindrical probe and the measuring card are both made of copper.
Preferably, the measuring instrument is provided with two detection ports, the detection assemblies are correspondingly provided with two detection ports, and the detection assemblies correspond to the detection ports one to one.
Preferably, be equipped with two on the measuring apparatu detect port, the measuring head with the second wire all correspondingly is provided with two, and two the second wire shares one the insulating holding rod, two the measuring head can respectively with two of clamp plate wait to detect the end butt.
Preferably, at least one magnetic fixing band capable of being adsorbed on the screen cabinet is installed on the back of the measuring instrument.
Preferably, a plurality of magnet pieces are arranged on the magnetic fixing belt at intervals along the length direction of the magnetic fixing belt.
Preferably, the measuring instrument comprises:
a housing;
the integrated circuit board is arranged inside the shell and is connected with the detection port and the grounding port;
the panel, the panel sets up the top of shell, detection port with the ground connection port all sets up on the panel, still be equipped with on the panel with the digital display screen that integrated circuit board is connected.
Preferably, the measuring instrument further comprises an indicator light and a buzzer which are arranged on the panel, and the indicator light and the buzzer are both connected with the integrated circuit board.
Has the advantages that: the invention provides a pressure plate voltage measuring device. During the use, pass through screw hole and screen cabinet ground screw fixed connection with the banana socket earlier, inject the banana plug again in the connecting hole in order to ensure that ground connection is accurate, the handheld detection subassembly of operation personnel afterwards to make it be close to the clamp plate earlier, the measuring apparatu can show the measured voltage value, makes the other end that the detection subassembly is close to the clamp plate again in order to obtain corresponding voltage value, and then can judge whether there is the free from heteropolarity at the both ends of clamp plate. The device can make ground connection more firm through the connection of screw hole and ground screw, banana plug and connecting hole, has improved the efficiency of measuring clamp plate voltage.
Drawings
FIG. 1 is a schematic structural diagram of a platen voltage measurement device provided by the present invention;
fig. 2 is a schematic structural diagram of the back of the measuring instrument provided by the invention.
Wherein:
1. a measuring instrument; 11. a detection port; 12. a ground port; 13. a receiving groove; 14. an electric quantity indicating lamp; 15. a digital display screen; 16. a power key; 17. a first operation key; 18. an indicator light; 19. a buzzer;
2. a detection component; 21. a measuring head; 211. a cylindrical probe; 212. measuring a card; 22. an insulating holding rod; 23. a second conductive line;
3. a ground component; 31. a first conductive line; 32. banana plugs; 33. a banana jack; 331. connecting holes;
4. magnetic force fixing belts; 41. and a magnet piece.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
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, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example 1
As shown in fig. 1, the present embodiment provides a pressure plate voltage measuring device, which includes a measuring instrument 1, a detecting component 2 and a grounding component 3, wherein the measuring instrument 1 is provided with a detecting port 11 and a grounding port 12, and the measuring instrument is used for displaying a voltage value of a to-be-detected end of a pressure plate; one end of the detection component 2 is connected to the detection port 11, and the other end of the detection component can be abutted against the end to be detected of the pressing plate, so that the voltage of the end to be detected of the pressing plate is introduced into the measuring instrument 1; the grounding component 3 comprises a banana plug 32 and a banana socket 33 which are matched, and the tail part of the banana plug 32 is connected to the grounding port 12 through a wire; the two ends of the banana socket 33 are respectively provided with a connecting hole 331 and a threaded hole, the head of the banana plug 32 can be inserted into the connecting hole 331 of the banana socket 33, and the top of the grounding screw of the screen cabinet can be in threaded connection with the threaded hole.
During the use, earlier with banana socket 33 through screw hole and screen cabinet ground screw fixed connection, insert banana plug 32 again in the connecting hole 331 in order to ensure that ground connection is accurate, the handheld detection subassembly 2 of operating personnel makes it be close to the one end of clamp plate earlier afterwards, and measuring apparatu 1 can show the voltage value that measures, makes the other end that detection subassembly 2 is close to the clamp plate in order to obtain corresponding voltage value again, and then can judge whether there is the free from heteropolarity at the both ends of clamp plate. The device makes ground connection more firm through the connection of screw hole and ground screw, banana plug 32 and connecting hole 331, has improved the efficiency of measuring clamp plate voltage.
Further, in order to facilitate the accommodation of the banana jack 33, the side wall of the measuring instrument 1 is opened with an accommodation groove 13 for accommodating the banana jack 33.
Illustratively, the head aperture of the banana plug 32 is 4 mm.
In this embodiment, considering that the grounded position of the cabinet is narrow and the space is small, the banana jack 33 is L-shaped, so that the banana jack 33 is connected with the banana plug 32 and the ground screw respectively.
Further, the first wire 31 is a retractable wire to adapt to the distance between the gauge 1 and the ground screw when measuring different press plates.
In consideration of the fact that gears are easily mistaken when a universal meter is used for measuring the voltage of the pressing plate in the prior art, short circuit or inaccurate measurement is caused, in the embodiment, the measuring instrument 1 has no gear selection so as to avoid the situation of selecting the wrong gear.
Specifically, in order to introduce the voltage of the end to be detected of the pressure plate into the measuring instrument 1, the detection assembly 2 comprises a measuring head 21, an insulating holding rod 22 and a second lead 23, one end of the measuring head 21 can be connected with the end to be detected of the pressure plate, and the other end of the measuring head is fixed at one end of the insulating holding rod 22; the second wire 23 passes through the insulating holding rod 22 and is fixedly connected with the measuring head 21 and the detection port 11 respectively.
Further, the second wire 23 is a retractable wire to adapt to the distance between the measuring instrument 1 and the end of the pressing plate to be detected when measuring pressing plates of different structures.
In this embodiment, the pressure plate has two structures, namely a spring type structure and a linked piece type structure, the measuring head 21 comprises a cylindrical probe 211 and a measuring card 212, and the cylindrical probe 211 can be inserted into a to-be-detected opening of the spring type pressure plate; one end of the measuring card 212 is fixedly connected with one end of the cylindrical probe 211 close to the insulating holding rod 22, and the other end of the measuring card is provided with a U-shaped notch which can be clamped outside the to-be-detected column of the linked pressing plate.
Illustratively, the cylindrical probe 211 and the measurement card 212 are both made of copper.
Further, for the convenience of detecting the both ends of clamp plate in proper order, be equipped with two detection port 11 on measuring apparatu 1, detection component 2 is corresponding to be provided with two, detection component 2 and detection port 11 one-to-one for make measuring apparatu 1 and the both ends of clamp plate can the butt simultaneously, measure the first end and the second end of clamp plate respectively, the repeated condition of waiting to detect the end that appears when avoiding only one measuring head 21, and improve measurement of efficiency. Of course, in other embodiments, only one insulating holding rod 22 may be needed, that is, two second wires 23 share one insulating holding rod 22, and the two measuring heads respectively abut against the two ends to be detected of the pressing plate, as long as the two ends of the pressing plate and the measuring instrument 1 can simultaneously contact, which is not limited in this embodiment.
In order to reduce the work of the operator, the measuring instrument 1 comprises a shell, a panel arranged on the top of the shell, and an integrated circuit board and a voltmeter which are arranged inside the shell, wherein a detection port 11 and a grounding port 12 are both arranged on the panel, the panel is also provided with an electric quantity indicating lamp 14, a digital display screen 15 connected with the integrated circuit board, a power key 16, a first operating key 17 and a second operating key, and the electric quantity indicating lamp 14 is connected with the voltmeter. After the measuring instrument 1 is contacted with both ends of the pressing plate, the power key 16 is pressed to turn on the power supply, the first operation key 17 is pressed to realize the measurement of the voltage of the first end of the pressing plate, the second operation key is pressed to realize the measurement of the voltage of the second end of the pressing plate, the voltage values are respectively displayed on the digital display screen 15, and whether the opposite polarities exist at both ends is automatically judged. Since how to realize that the two ends can automatically judge whether the opposite polarities exist is the prior art, the embodiment is not specifically described.
Illustratively, the housing of the measuring device 1 is made of ABS engineering plastic.
When the measuring instrument 1 is used, the operator cannot observe the reading on the digital display screen 15 conveniently if the measuring instrument 1 is directly placed on the ground or placed on the hand for measurement, and when the measuring instrument 1 is placed at will, danger is easy to occur. In this embodiment, as shown in fig. 2, install magnetic force fixed band 4 on the back of measuring apparatu 1 shell, magnetic force fixed band 4 can adsorb on the screen is cashier's office in a shop to make measuring apparatu 1 can hang on the screen cashier's office in a shop, make things convenient for operation of operation personnel and reading, can also avoid the long-time handheld measuring apparatu 1 of measurement in-process, alleviate operation personnel's fatigue.
Specifically, in order to enable the measuring instrument 1 to be attached to the screen cabinet, a plurality of magnet pieces 41 are disposed on the magnetic force fixing band 4 at intervals along the length direction of the magnetic force fixing band 4.
Furthermore, a plurality of magnetic fixing belts 4 are arranged on the measuring instrument 1 at intervals along the width direction of the magnetic fixing belts 4, so that the contact area between the measuring instrument 1 and the screen cabinet is increased, the adsorption force between the measuring instrument 1 and the screen cabinet is improved, and the measuring instrument 1 can be always reliably and stably contacted with the two ends of the pressing plate without hands in the measuring process.
The working flow of the whole pressure plate voltage measuring device is as follows: during the use, fix measuring apparatu 1 on the screen cabinet, pass through screw hole and screen cabinet ground screw fixed connection with banana socket 33, inject banana plug 32 again into connecting hole 331 in order to ensure that ground connection is accurate, select to use according to the clamp plate whether spring or antithetical couplet piece formula structure to insert two cylindricality probes 211 in proper order and wait to detect mouthful or two measurement card 212 block in proper order outside waiting to detect the post at the both ends of clamp plate in the both ends of clamp plate, open the power after confirming to connect accurate, press first operating key 17, realize the measurement to the voltage of clamp plate first end, press the second operating key, realize the measurement to the voltage of clamp plate second end, and show the magnitude of voltage respectively and judge whether heteropolarity exists at both ends automatically on digital display screen 15.
Example 2
The present embodiment provides a pressure plate voltage measuring device, which is different from embodiment 1 only in that a reminding function of the measuring instrument 1 is added, that is, when there is a polarity difference between two ends of the pressure plate, the device can remind the operator to pay attention. Thereby reducing the workload of operators and improving the accuracy of measurement.
Specifically, the measuring instrument 1 further includes an indicator light 18 and a buzzer 19 disposed on the panel, and both the indicator light 18 and the buzzer 19 are connected to the integrated circuit board. Namely, after the voltage at the two ends is displayed on the digital display screen 15 and whether the two ends have heteropolarity is judged, if the two ends have heteropolarity, the indicator light 18 lights a 'green light', the buzzer 19 does not sound, and the pressing plate can be put into use; if the polarity is opposite, the polarity determination indicator lamp 18 lights a red lamp, the buzzer 19 gives an alarm, and the pressing plate cannot be put into the device. Of course, in other embodiments, only the indicator light 18 or the buzzer 19 may be disposed on the panel, as long as the warning function is achieved, and the embodiment is not particularly limited.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. A platen voltage measurement device, comprising:
the pressure plate detection device comprises a measuring instrument (1), wherein a detection port (11) and a grounding port (12) are arranged on the measuring instrument (1), and the measuring instrument (1) is used for displaying a voltage value of a to-be-detected end of a pressure plate;
one end of the detection component (2) is connected to the detection port (11), and the other end of the detection component (2) can be abutted against the end to be detected of the pressing plate so as to lead the voltage of the end to be detected of the pressing plate into the measuring instrument (1);
a ground assembly (3), said ground assembly (3) comprising a first wire (31), a mating banana plug (32) and banana jack (33), a tail portion of said banana plug (32) being connected to said ground port (12) by said first wire (31); the two ends of the banana socket (33) are respectively provided with a connecting hole (331) and a threaded hole, the head of the banana plug (32) can be inserted into the connecting hole (331) of the banana socket (33), and the top of the grounding screw rod of the screen cabinet can be in threaded connection with the threaded hole.
2. The platen voltage measuring device according to claim 1, wherein the probe assembly (2) comprises a measuring head (21), an insulating grip (22) and a second wire (23), one end of the measuring head (21) being connectable to the end of the platen to be tested, the other end being fixed to one end of the insulating grip (22); the second lead (23) penetrates through the insulating holding rod (22) and is fixedly connected with the measuring head (21) and the detection port (11) respectively.
3. The platen voltage measuring device according to claim 2, characterized in that the measuring head (21) comprises a cylindrical probe (211) and a measuring card (212), the cylindrical probe (211) being insertable into a to-be-detected opening of a spring-loaded platen; one end of the measuring card (212) is fixedly connected with one end, close to the insulating holding rod (22), of the cylindrical probe (211), and the other end of the measuring card is provided with a U-shaped notch which can be clamped outside a to-be-detected column of the linked plate type pressing plate.
4. The platen voltage measurement device of claim 3, wherein the cylindrical probe (211) and the measurement card (212) are both made of copper.
5. The platen voltage measuring apparatus according to claim 2, wherein two detection ports (11) are provided on the measuring instrument (1), two detection assemblies (2) are provided, respectively, and the detection assemblies (2) and the detection ports (11) are in one-to-one correspondence.
6. The platen voltage measuring device according to claim 2, wherein two detecting ports (11) are provided on the measuring instrument (1), two measuring heads (21) and two second wires (23) are provided, and the two second wires (23) share one insulating holding rod (22), and the two measuring heads (21) can be respectively abutted to two ends of the platen to be detected.
7. Platen voltage measurement device according to claim 1, characterized in that at least one magnetic fixing strip (4) that can be adsorbed on the cabinet is mounted on the back of the measurement instrument (1).
8. The platen voltage measuring device according to claim 7, wherein a plurality of magnet pieces (41) are provided on the magnetic force fixing band (4) at intervals along a length direction of the magnetic force fixing band (4).
9. The platen voltage measurement arrangement according to claim 1, wherein the measurement instrument (1) comprises:
a housing;
an integrated circuit board disposed inside the housing and connected to both the detection port (11) and the ground port (12);
the panel, the panel sets up the top of shell, detection port (11) with ground connection port (12) all set up on the panel, still be equipped with on the panel with digital display screen (15) that integrated circuit board is connected.
10. The platen voltage measurement device according to claim 9, wherein the measurement instrument (1) further comprises an indicator light (18) and a buzzer (19) disposed on the panel, the indicator light (18) and the buzzer (19) being connected to the integrated circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110368205.5A CN113092843A (en) | 2021-04-06 | 2021-04-06 | Pressure plate voltage measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110368205.5A CN113092843A (en) | 2021-04-06 | 2021-04-06 | Pressure plate voltage measuring device |
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| CN113092843A true CN113092843A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110368205.5A Pending CN113092843A (en) | 2021-04-06 | 2021-04-06 | Pressure plate voltage measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113933565A (en) * | 2021-10-11 | 2022-01-14 | 广东电网有限责任公司 | Measurement indicating device and method of relay protection plate |
| CN114062727A (en) * | 2021-11-17 | 2022-02-18 | 中国南方电网有限责任公司超高压输电公司柳州局 | Protective pressing plate rapid measuring instrument and protective pressing plate voltage measuring method |
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| CN110596446A (en) * | 2019-09-12 | 2019-12-20 | 国网江西省电力有限公司检修分公司 | Transformer substation tripping pressure plate voltage measuring instrument |
| CN211318569U (en) * | 2019-09-12 | 2020-08-21 | 国网江西省电力有限公司检修分公司 | Transformer substation tripping pressure plate voltage measuring instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113933565A (en) * | 2021-10-11 | 2022-01-14 | 广东电网有限责任公司 | Measurement indicating device and method of relay protection plate |
| CN113933565B (en) * | 2021-10-11 | 2024-01-09 | 广东电网有限责任公司 | Measurement indicating device and method for relay pressure protection plate |
| CN114062727A (en) * | 2021-11-17 | 2022-02-18 | 中国南方电网有限责任公司超高压输电公司柳州局 | Protective pressing plate rapid measuring instrument and protective pressing plate voltage measuring method |
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Application publication date: 20210709 |