CN113625022A - Power meter - Google Patents
Power meter Download PDFInfo
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- CN113625022A CN113625022A CN202110960384.1A CN202110960384A CN113625022A CN 113625022 A CN113625022 A CN 113625022A CN 202110960384 A CN202110960384 A CN 202110960384A CN 113625022 A CN113625022 A CN 113625022A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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Abstract
The invention discloses a power meter, and relates to the technical field of power. The invention comprises a machine body structure, a rotary sealing component, a fog cleaning component, a bidirectional indicating component, an instrument sealing component, a data processing module and a display module; the fog cleaning assembly and the bidirectional indicating assembly are both fixedly connected with the machine body structure; the instrument sealing assembly is clamped and matched with the machine body structure, and the rotary sealing assembly is rotationally matched with the machine body structure; the bidirectional indicating assembly is electrically connected with the data processing module, and the data processing module is electrically connected with the display module. According to the invention, through the design of the rotating shaft, the limiting guide ring, the scale indicating disc, the bidirectional indicating assembly, the indicating needle and the miniature camera, the miniature camera is used for transmitting the scale value on the scale indicating disc to the data processing module, and the scale value is processed by the data processing module and then is used for reading the output power meter to the display module, so that the problem that the reading of the instrument is inconvenient to observe due to the problem of light reflection is effectively avoided.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to an electric power meter.
Background
In the power system, parameters such as current and voltage in the power system can be detected through a measuring instrument, the power meter can visually display the running state of equipment in time, and the conventional power meter is generally made into a detachable type, so that the later-stage installation is facilitated.
However, the existing power meter is easy to cause water vapor to enter the inside of the instrument panel, so that internal electronic elements are damaged, and the service life of the power instrument panel is not prolonged; the existing electric power meter is easy to form fog on an instrument closed disk, and is inconvenient for people to observe; in addition, the instrument panel of the existing electric power meter has the defect of light reflection, and is not beneficial to observing data indicated by the instrument panel pointer. To this end, we have devised a power meter to solve the above technical problem.
Disclosure of Invention
The invention aims to provide an electric power meter, which solves the problems that the existing electric power meter easily causes water vapor to enter the inside of an instrument panel and further causes damage to internal electronic elements and is not beneficial to prolonging the service life of the electric power instrument panel, the existing electric power meter easily forms mist on an instrument panel closed disc and is inconvenient for people to observe, the instrument panel of the existing electric power meter has the defect of light reflection and is not beneficial to observing data indicated by an instrument panel pointer through the design of a machine body structure, a rotary sealing component, a mist clearing component, a bidirectional indicating component and an instrument panel closed component.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an electric power meter, which comprises a machine body structure; the device also comprises a rotary sealing component, a fog cleaning component, a two-way indicating component, an instrument sealing component, a data processing module and a display module; the machine body structure, the rotary sealing assembly, the fog cleaning assembly, the bidirectional indicating assembly and the instrument sealing assembly are coaxial; the fog cleaning assembly and the bidirectional indicating assembly are both positioned in the machine body structure; the fog cleaning assembly is positioned right above the bidirectional indicating assembly, and the fog cleaning assembly and the bidirectional indicating assembly are both fixedly connected with the machine body structure; the instrument sealing assembly is positioned on one side of the machine body structure and is in clamping fit with the machine body structure, and the rotary sealing assembly is sleeved outside the machine body structure and is in running fit with the machine body structure; the bidirectional indicating assembly is electrically connected with the data processing module, and the data processing module is electrically connected with the display module.
Further, the machine body structure comprises a machine body shell, and a data display cavity is formed in the end face, close to the instrument sealing assembly, of the machine body shell;
the side face of the machine body shell is provided with an annular channel with the same axis, the inner surface of the annular channel is provided with a plurality of inclined dehumidifying grooves along the annular direction, and the inner wall of each inclined dehumidifying groove is provided with a plurality of air holes communicated with the data display cavity.
Furthermore, a rotating shaft which is coaxial with the machine body shell is arranged at the center of the inner wall of the data display cavity;
the same side of the rotating shaft in the data display cavity is fixed with a limiting guide ring which is coaxial with the rotating shaft, the same side of the rotating shaft in the data display cavity is fixed with a scale indicating disc which is coaxial with the rotating shaft, and the scale indicating disc is located on the inner side of the limiting guide ring.
Furthermore, an annular limiting sliding groove which is coaxial with the limiting guide ring is formed in the same side face of the rotating shaft in the data display cavity, and the annular limiting sliding groove is located on the outer side of the limiting guide ring;
a positioning rod is fixed inside the annular limiting sliding groove through a sliding block;
the machine body shell is characterized in that a first positioning groove is formed in the peripheral side face of the machine body shell, and a second positioning groove is formed in the same side face of the data display cavity of the machine body shell.
Furthermore, the instrument sealing assembly comprises an instrument sealing disc, a positioning ring which is coaxial with the instrument sealing disc is fixed on one side surface of the instrument sealing disc, a plurality of clamping grooves are formed in the side surface, away from the instrument sealing disc, of the positioning ring, and the clamping grooves are in clamping fit with the positioning rods;
the side face of the periphery of the instrument sealing disc is fixedly provided with a first ear plate, and the first ear plate is connected with the second positioning groove through a fastener.
Furthermore, the rotary sealing assembly comprises a rotary ring, a sealing arc plate is fixed on the inner surface of the rotary ring through a connecting piece, the sealing arc plate is in sliding fit with the inner surface of the annular channel, and the sealing arc plate is matched with the inclined dehumidification groove in position;
and a second lug plate is fixed on the side surface of the rotating ring, which is far away from the sealing arc plate, and the second lug plate is connected with the first positioning groove through a fastener.
Furthermore, the fog cleaning assembly comprises a fixed disk, and the fixed disk is fixedly connected with the end face of the rotating shaft, which is far away from the limiting guide ring;
the fixed disk is characterized in that a needle type mist cleaning rod is fixed on the peripheral side face of the fixed disk, a mist cleaning groove is formed in the side face, close to the instrument sealing disk, of the needle type mist cleaning rod, and the needle type mist cleaning rod is in sliding fit with the instrument sealing disk.
Furthermore, the bidirectional indicating assembly comprises a mounting ring, and the mounting ring is fixed on the peripheral side surface of the rotating shaft;
an indicating needle and a connecting rod are respectively fixed on the outer surface of the mounting ring, and the indicating needle and the connecting rod are arranged in a collinear manner;
the indicating needle is matched with the scale indicating disc in position, and the indicating needle and the needle type mist cleaning rod are located on the same plane.
Furthermore, a support frame is fixed at one end of the connecting rod, a sliding fitting piece is fixed at one end of the support frame, and the sliding fitting piece is in sliding fit with the limiting guide ring;
the side surface of the support frame, which is close to the scale indicating disc, is provided with a miniature camera, and the miniature camera is matched with the scale indicating disc in position;
the miniature camera is electrically connected with the data processing module.
The invention has the following beneficial effects:
1. according to the invention, through the design of the data display cavity, the rotating shaft, the limiting guide ring, the scale indicating disc, the bidirectional indicating assembly, the indicating needle and the miniature camera, the miniature camera collinear with the indicating needle is utilized to transmit the scale value on the scale indicating disc to the data processing module, and the reading of the output power meter is transmitted to the display module after being processed by the data processing module, so that the problem that the reading of the instrument is inconvenient to observe due to the problem of light reflection is effectively avoided, and the accuracy and the efficiency of the reading of the instrument are greatly improved.
2. According to the invention, through the design of the fixed disc, the needle type mist cleaning rod, the mist cleaning groove and the instrument sealing assembly, when more water mist exists on the instrument sealing disc to influence the reading of the instrument, the instrument sealing assembly can be rotated, and under the relative sliding action between the instrument sealing disc and the needle type mist cleaning rod, the water absorption material in the mist cleaning groove is used for removing the water mist on the instrument sealing disc, so that a worker can observe the reading of the electric power meter conveniently.
3. According to the invention, through the design of the annular channel, the oblique dehumidification groove, the air hole, the rotary sealing assembly and the sealing arc plate, the water absorption column containing the water absorption material is placed in the oblique dehumidification groove, and the sealing arc plate is used for sealing the oblique dehumidification groove, so that the water vapor absorption in the power meter is realized, the damage of the water vapor to the electronic elements in the power meter is effectively avoided, and the service life of the power meter is prolonged.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power meter.
Fig. 2 is an exploded view of the structure of fig. 1.
Fig. 3 is a schematic diagram of the internal structure of the power meter.
Fig. 4 is a top view of the structure of fig. 3.
Fig. 5 is a schematic structural diagram of the body structure.
Fig. 6 is a front view of the structure of fig. 5.
Fig. 7 is a top view of the structure of fig. 5.
Fig. 8 is a schematic view of the structure of the meter closure assembly.
Fig. 9 is a schematic structural view of a rotary seal assembly.
Fig. 10 is a schematic structural view of the mist cleaning assembly.
Fig. 11 is a schematic structural diagram of a bidirectional indicating assembly.
In the drawings, the components represented by the respective reference numerals are listed below:
1-body structure, 101-body shell, 102-data display cavity, 103-annular channel, 104-inclined dehumidification groove, 105-air hole, 106-rotating shaft, 107-limit guide ring, 108-scale indicating disc, 109-annular limit sliding groove, 110-positioning rod, 111-first positioning groove, 112-second positioning groove, 2-rotary sealing component, 201-rotary ring, 202-connecting piece, 203-sealing arc plate, 204-second ear plate, 3-fog-clearing component, 301-fixed disc, 302-needle type fog-clearing rod, 303-fog-clearing groove, 4-bidirectional indicating component, 401-mounting ring, 402-indicating needle, 403-connecting rod, 404-supporting frame, 405-sliding fitting piece, 406-micro camera, 5-instrument closure assembly, 501-instrument closure disk, 502-positioning ring, 503-card slot, 504-first ear plate.
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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-11, the present invention is a power meter, including a body structure 1; the device also comprises a rotary sealing component 2, a fog cleaning component 3, a two-way indicating component 4, an instrument sealing component 5, a data processing module and a display module;
the machine body structure 1, the rotary sealing component 2, the fog cleaning component 3, the bidirectional indicating component 4 and the instrument sealing component 5 are coaxial;
the fog cleaning component 3 and the bidirectional indicating component 4 are both positioned in the machine body structure 1; the fog cleaning component 3 is positioned right above the bidirectional indicating component 4, and the fog cleaning component 3 and the bidirectional indicating component 4 are both fixedly connected with the machine body structure 1;
the instrument sealing component 5 is positioned at one side of the machine body structure 1 and is clamped and matched with the machine body structure 1, and the rotary sealing component 2 is sleeved outside the machine body structure 1 and is rotationally matched with the machine body structure 1;
the bidirectional indicating component 4 is electrically connected with the data processing module, the data processing module is electrically connected with the display module, and when the pointer on the wattmeter is influenced by light emission, the specific reading of the wattmeter can be observed through the display module on the wattmeter.
The body structure 1 comprises a body shell 101, and a data display cavity 102 is formed in the end face, close to the instrument sealing component 5, of the body shell 101;
the circumferential side of the body shell 101 is provided with a coaxial annular channel 103, the inner surface of the annular channel 103 is provided with a plurality of inclined dehumidifying grooves 104 along the annular direction, the inner wall of each inclined dehumidifying groove 104 is provided with a plurality of air holes 105 communicated with the data display cavity 102, a water absorbing column containing a water absorbing material is placed in each inclined dehumidifying groove 104, water vapor in the electric power meter is absorbed into the water absorbing column containing the water absorbing material through the air holes 105, further, the influence of the water vapor in the electric power meter on the internal elements is effectively avoided, and the service life of the electric power meter is prolonged.
A rotating shaft 106 which is coaxial with the machine body shell 101 is arranged at the center of the inner wall of the data display cavity 102;
a limit guide ring 107 which is coaxial with the rotating shaft 106 is fixed on the same side surface of the rotating shaft 106 in the data display cavity 102, a scale indicating disc 108 which is coaxial with the rotating shaft 106 is fixed on the same side surface of the rotating shaft 106 in the data display cavity 102, and the scale indicating disc 108 is positioned on the inner side of the limit guide ring 107;
an annular limiting sliding groove 109 which is coaxial with the limiting guide ring 107 is formed in the same side face of the rotating shaft 106 in the data display cavity 102, and the annular limiting sliding groove 109 is located on the outer side of the limiting guide ring 107;
a positioning rod 110 is fixed inside the annular limiting chute 109 through a sliding block; a first positioning groove 111 is formed on the peripheral side surface of the body casing 101, and a second positioning groove 112 is formed on the same side surface of the data display cavity 102 of the body casing 101.
The instrument sealing assembly 5 comprises an instrument sealing disc 501, a positioning ring 502 which is coaxial with the instrument sealing disc 501 is fixed on one side face of the instrument sealing disc 501, a plurality of clamping grooves 503 are formed in the side face, far away from the instrument sealing disc 501, of the positioning ring 502, and the clamping grooves 503 are in clamping fit with the positioning rods 110, so that the instrument sealing assembly 5 and the machine body shell 101 are installed in a sealing clamping mode;
the first ear plate 504 is fixed on the peripheral side surface of the meter closing disk 501, the first ear plate 504 is connected with the second positioning slot 112 through a fastener, and at this time, the meter closing component 5 cannot rotate along the annular limiting sliding slot 109.
The rotary sealing assembly 2 comprises a rotary ring 201, a sealing arc plate 203 is fixed on the inner surface of the rotary ring 201 through a connecting piece 202, the sealing arc plate 203 is in sliding fit with the inner surface of the annular channel 103, and the sealing arc plate 203 is matched with the inclined dehumidification groove 104;
a second lug plate 204 is fixed on the side surface of the rotating ring 201 far away from the sealing arc plate 203, and the second lug plate 204 is connected with the first positioning groove 111 through a fastener; after the water absorption column containing the water absorption material is placed in the oblique dehumidification groove 104, the oblique dehumidification groove 104 is sealed by the sealing arc plate 203, and the water absorption column containing the water absorption material is fixed in the oblique dehumidification groove 104, so that water vapor inside the power meter is absorbed, the damage of the water vapor to electronic elements inside the power meter is effectively avoided, and the service life of the power meter is prolonged.
The fog cleaning component 3 comprises a fixed disc 301, and the fixed disc 301 is fixedly connected with the end face, far away from the limiting guide ring 107, of the rotating shaft 106;
The bidirectional indicating component 4 comprises a mounting ring 401, and the mounting ring 401 is fixed on the peripheral side surface of the rotating shaft 106;
an indicator needle 402 and a connecting rod 403 are respectively fixed on the outer surface of the mounting ring 401, and the indicator needle 402 and the connecting rod 403 are arranged in a collinear manner;
the position of the indicating needle 402 is matched with that of the scale indicating disc 108, the indicating needle 402 and the needle type mist cleaning rod 302 are located on the same plane, when the rotating shaft 106 drives the indicating needle 402 to rotate, the needle type mist cleaning rod 302 and the indicating needle 402 synchronously rotate, and the indicating needle 402 and the needle type mist cleaning rod 302 are located on the same plane, so that the influence of the projection of the needle type mist cleaning rod 302 on the observation of the indicating needle 402 can be effectively reduced.
Wherein, one end of the connecting rod 403 is fixed with a support frame 404, one end of the support frame 404 is fixed with a sliding fitting piece 405, and the sliding fitting piece 405 is in sliding fit with the limit guide ring 107;
a miniature camera 406 is arranged on the side surface of the support frame 404 close to the scale indicating disc 108, and the miniature camera 406 is matched with the scale indicating disc 108 in position; the miniature camera 406 is electrically connected with the data processing module; when there is the reading of light emission influence pointer 402, utilize the miniature camera 406 on the connecting rod 403 with pointer 402 collineation setting to the data acquisition effect of scale indicating dial 108, transmit the scale interval on the scale indicating dial 108 for data processing module through miniature camera 406, on handling back through data processing module will exporting the electric power meter reading to display module, thereby effectively avoided the problem of the observation instrument reading of being not convenient for because of the light reflection problem causes, the accuracy and the high efficiency of instrument reading have been improved greatly.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. An electricity meter comprising a body structure (1); the method is characterized in that: the device also comprises a rotary sealing component (2), a fog cleaning component (3), a two-way indicating component (4), an instrument sealing component (5), a data processing module and a display module;
the machine body structure (1), the rotary sealing assembly (2), the fog cleaning assembly (3), the bidirectional indicating assembly (4) and the instrument sealing assembly (5) are coaxial;
the fog cleaning component (3) and the bidirectional indicating component (4) are both positioned in the machine body structure (1); the fog cleaning component (3) is positioned right above the bidirectional indicating component (4), and the fog cleaning component (3) and the bidirectional indicating component (4) are both fixedly connected with the machine body structure (1);
the instrument sealing assembly (5) is positioned on one side of the machine body structure (1) and is in clamping fit with the machine body structure, and the rotary sealing assembly (2) is sleeved outside the machine body structure (1) and is in running fit with the machine body structure;
the bidirectional indicating component (4) is electrically connected with the data processing module, and the data processing module is electrically connected with the display module.
2. The wattmeter according to claim 1, characterized in that the body structure (1) comprises a body case (101), the end surface of the body case (101) near the meter closing component (5) is opened with a data display cavity (102);
organism casing (101) week side is seted up annular channel (103) with the axle center, a plurality of slant dehumidification grooves (104) have been seted up along the hoop to annular channel (103) internal surface, slant dehumidification groove (104) inner wall is seted up a plurality of and data show chamber (102) communicating gas pocket (105).
3. The electric power meter according to claim 2, characterized in that the center of the inner wall of the data display cavity (102) is provided with a rotating shaft (106) coaxial with the machine body shell (101);
the same side of the internal rotating shaft (106) of the data display cavity (102) is fixed with a limiting guide ring (107) which is coaxial with the rotating shaft (106), the same side of the internal rotating shaft (106) of the data display cavity (102) is fixed with a scale indicating disc (108) which is coaxial with the rotating shaft (106), and the scale indicating disc (108) is located on the inner side of the limiting guide ring (107).
4. The electric power meter according to claim 3, characterized in that the same side of the rotating shaft (106) inside the data display cavity (102) is provided with an annular limiting sliding groove (109) coaxial with the limiting guide ring (107), and the annular limiting sliding groove (109) is positioned outside the limiting guide ring (107);
a positioning rod (110) is fixed inside the annular limiting sliding groove (109) through a sliding block;
the side surface of the machine body shell (101) is provided with a first positioning groove (111), and the same side surface of the data display cavity (102) of the machine body shell (101) is provided with a second positioning groove (112).
5. The electric power meter according to claim 4, characterized in that the meter closing assembly (5) comprises a meter closing disc (501), a positioning ring (502) coaxial with the meter closing disc (501) is fixed on one side of the meter closing disc (501), a plurality of clamping grooves (503) are formed in the side of the positioning ring (502) far away from the meter closing disc (501), and the clamping grooves (503) are in clamping fit with the positioning rods (110);
the instrument sealing disk is characterized in that a first ear plate (504) is fixed on the peripheral side face of the instrument sealing disk (501), and the first ear plate (504) is connected with the second positioning groove (112) through a fastener.
6. A power meter according to claim 4, characterized in that the rotary sealing assembly (2) comprises a rotary ring (201), a sealing arc plate (203) is fixed on the inner surface of the rotary ring (201) through a connecting piece (202), the sealing arc plate (203) is in sliding fit with the inner surface of the annular channel (103), and the sealing arc plate (203) is matched with the position of the inclined dehumidification groove (104);
and a second lug plate (204) is fixed on the side surface of the rotating ring (201) far away from the sealing arc plate (203), and the second lug plate (204) is connected with the first positioning groove (111) through a fastener.
7. The electric power meter according to claim 5, characterized in that the mist clearing component (3) comprises a fixed disk (301), and the fixed disk (301) is fixedly connected with the end surface of the rotating shaft (106) far away from the limit guide ring (107);
fixed disk (301) week side is fixed with clear fog pole of needle (302), clear fog groove (303) have been seted up to the side that clear fog pole of needle (302) is close to instrument closing disc (501), clear fog pole of needle (302) and instrument closing disc (501) sliding fit.
8. A power meter according to claim 7, characterized in that the bidirectional indicating member (4) comprises a mounting ring (401), the mounting ring (401) being fixed to the peripheral side of the rotary shaft (106);
an indicating needle (402) and a connecting rod (403) are respectively fixed on the outer surface of the mounting ring (401), and the indicating needle (402) and the connecting rod (403) are arranged in a collinear manner;
the indicating needle (402) is matched with the position of the scale indicating disc (108), and the indicating needle (402) and the needle type mist cleaning rod (302) are positioned on the same plane.
9. The electric power meter according to claim 8, characterized in that a support bracket (404) is fixed at one end of the connecting rod (403), a sliding fitting piece (405) is fixed at one end of the support bracket (404), and the sliding fitting piece (405) is in sliding fit with the limit guide ring (107);
a miniature camera (406) is arranged on the side surface, close to the scale indication disc (108), of the support frame (404), and the miniature camera (406) is matched with the scale indication disc (108) in position;
the miniature camera (406) is electrically connected with the data processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110960384.1A CN113625022A (en) | 2021-08-20 | 2021-08-20 | Power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110960384.1A CN113625022A (en) | 2021-08-20 | 2021-08-20 | Power meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113625022A true CN113625022A (en) | 2021-11-09 |
Family
ID=78386944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110960384.1A Withdrawn CN113625022A (en) | 2021-08-20 | 2021-08-20 | Power meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113625022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232559A (en) * | 2023-11-10 | 2023-12-15 | 山东科尔自动化仪表股份有限公司 | Pointer length adjustable instrument and meter structure |
-
2021
- 2021-08-20 CN CN202110960384.1A patent/CN113625022A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232559A (en) * | 2023-11-10 | 2023-12-15 | 山东科尔自动化仪表股份有限公司 | Pointer length adjustable instrument and meter structure |
| CN117232559B (en) * | 2023-11-10 | 2024-01-26 | 山东科尔自动化仪表股份有限公司 | Pointer length adjustable instrument and meter structure |
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Application publication date: 20211109 |