Electric energy meter socket, electric energy meter calibration device and calibration method

Abstract

The present application discloses a card holder for an electric energy meter, an electric energy meter calibration device and a calibration method. The card holder for the electric energy meter includes: a shell, the interior of the shell is a cavity with openings on both sides; a card plate, including a sliding portion and a clamping portion, the sliding portion is located on the side wall of the clamping portion, wherein the number of the card plates is two, and the sliding portion of the first card plate and the sliding portion of the second card plate are respectively slidably inserted into the cavity through the openings on both sides of the shell; an elastic member, one end of the elastic member is connected to the sliding portion of the first card plate, and the other end of the elastic member is connected to the sliding portion of the second card plate, and the elastic member makes the sliding portion of the first card plate abut against the sliding portion of the second card plate; a first locking structure is arranged on the shell, and is used to fix the host of the electric energy meter calibration device. The present application fixes the host on the electric energy meter through the card holder, thereby improving the calibration efficiency of the electric energy meter and reducing the cost.

Description

Technical Field

[0001] The present application relates to the field of electric energy meter calibration, and in particular to an electric energy meter socket, an electric energy meter calibration device and a calibration method. Background Art

[0002] With the development of the power grid, the application of electric energy meters has become more extensive. As an electronic metering product, the electric energy meter runs slowly due to aging, faults, overcurrent and overvoltage, and the internal device of the electric energy meter can be tampered with to make the electric energy meter measure less or not measure anything. Therefore, it is necessary to use an electric energy meter calibrator to perform on-site calibration of the electric energy meter. The shape of the existing electric energy meter field calibrator is an independent design, and the product volume is large. At the same time, the structure of the product does not allow the electric energy meter calibrator to be installed around the electric energy meter. The electric energy meter calibrator is usually placed on the ground for testing. Therefore, when conducting on-site calibration, the electric energy meter is far away from the on-site calibrator. When measuring voltage, current and signal, a long test line is required for connection. The calibration is labor-intensive and the work efficiency is low. Summary of the invention

[0003] Based on the above problems, the present application provides a card holder for an electric energy meter, an electric energy meter calibration device and a calibration method, and fixes a host for calibrating the electric energy meter to the electric energy meter through the card holder, so as to facilitate the calibration of the electric energy meter.

[0004] One embodiment of the present application provides a card holder for an electric energy meter, comprising: a shell, the interior of the shell is a cavity with openings on both sides; a card plate, comprising a sliding portion and a clamping portion, the sliding portion is located on the side wall of the clamping portion, and the number of the card plates is two, wherein the sliding portion of the first card plate and the sliding portion of the second card plate can be slidably inserted into the cavity through the openings on both sides of the shell respectively; an elastic member, one end of the elastic member is connected to the sliding portion of the first card plate, and the other end of the elastic member is connected to the sliding portion of the second card plate, and the elastic member makes the sliding portion of the first card plate abut against the sliding portion of the second card plate; a first locking structure is arranged on the shell and is used to fix the host of the electric energy meter calibration device.

[0005] According to some embodiments of the present application, the housing includes an upper shell and a bottom cover, and the bottom cover closes the bottom end opening of the upper shell to form the cavity.

[0006] According to some embodiments of the present application, a first guide rail is provided on the top surface of the cavity of the shell, and the sliding parts of the first clamping plate and the second clamping plate are provided with guide grooves that cooperate with the first guide rail.

[0007] According to some embodiments of the present application, the clamping plate further includes a rubber pad, which is disposed on the inner side of the clamping portion.

[0008] According to some embodiments of the present application, there are multiple elastic members.

[0009] According to some embodiments of the present application, the first locking structure includes: a connecting column, which is arranged on the upper surface of the shell; and a first clamping block, which is arranged on the upper surface of the connecting column.

[0010] According to some embodiments of the present application, the first locking structure includes: two second guide rails, which are arranged parallel to each other on the upper surface of the shell; and a second clamping block, which is arranged between the two second guide rails and is located on the upper surface of the shell.

[0011] According to some embodiments of the present application, the sliding parts of the first card plate and the second card plate are both provided with oblong holes, the housing is provided with through holes, and the first locking structure includes screws. One embodiment of the present application provides an electric energy meter calibration device, including: a card holder as described above; a host for calibrating an electric energy meter, the host including a second locking structure that cooperates with the first locking structure, and the host is arranged on the card holder.

[0012] According to some embodiments of the present application, the first locking structure includes: a connecting column, which is arranged on the upper surface of the shell; a first card block, which is arranged on the upper surface of the connecting column; the second locking structure includes: a first card slot, which is arranged on the bottom surface of the host, and the first locking structure can slide in the first card slot; a limiting plate, which closes the partial opening of the first card slot near the rear end, and a notch is provided on the limiting plate, the width of the notch is smaller than the width of the first card block, and the connecting column can slide into the notch.

[0013] According to some embodiments of the present application, the first locking structure includes: two second guide rails, which are arranged parallel to each other on the upper surface of the shell; a second card block, which is arranged between the two second guide rails and is located on the upper surface of the shell; the second locking structure includes: a second card slot, which is arranged on the bottom surface of the host and extends to the front end surface of the host, and the two second guide rails can slide into the second card slot and engage with the second card slot; an elastic card, which extends from the rear end surface of the second card slot to the front end of the second card slot, and when the rear end surface of the second guide rail abuts against the rear end surface of the second card slot, the elastic card hooks the second card block.

[0014] According to some embodiments of the present application, the sliding parts of the first clamping plate and the second clamping plate are provided with oblong holes, and the outer shell is provided with through holes; the first locking structure includes screws; the second locking structure includes threaded holes arranged on the bottom surface of the host, and the threaded holes correspond to the corresponding through holes; the screws pass through the through holes and the oblong holes and are connected to the threaded holes.

[0015] According to some embodiments of the present application, a hanging rope structure is provided on the outer wall of the host.

[0016] One embodiment of the present application provides a method for calibrating an electric energy meter, which is implemented using the electric energy meter calibration device as described above, and the method includes: setting the host on the housing of the card holder, and locking the first locking structure and the second locking structure; pulling the first card plate and the second card plate to both sides so that the clamping parts of the first card plate and the second card plate clamp the electric energy meter; and calibrating the electric energy meter through the host. Or, suspending the host through the hanging rope structure, and calibrating the electric energy meter through the host. The host of the present application is connected to the card holder through a locking structure, so that the host used to calibrate the electric energy meter can be quickly installed and separated; the host is set on the electric energy meter through the card holder, and the signal for collecting the calibration does not require too long a test line, which saves costs and improves the calibration efficiency; the card holder clamps the electric energy meter through two card plates, and can be set on various types of electric energy meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without exceeding the scope of protection required by the present application.

[0018] Figure 1 This is a schematic diagram of the connection between the card holder, the electric energy meter and the host according to the embodiment of the present application;

[0019] Figure 2 is a schematic diagram of a card holder according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of an elastic member according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of a housing of an embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of a card board according to an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of the sliding portion of the embodiment of the present application penetrating into the housing;

[0024] Figure 7 It is a schematic diagram of the separation of two card boards in an embodiment of the present application;

[0025] Figure 8 is an exploded view of the housing of an embodiment of the present application;

[0026] Fig. 9 It is a schematic diagram of a first implementation of the first locking structure of an embodiment of the present application;

[0027] Fig.10is a schematic diagram of a first implementation of the second locking structure of an embodiment of the present application;

[0028] Fig.11 is a cross-sectional view of a first implementation of the second locking structure of an embodiment of the present application;

[0029] Fig.12 is a schematic diagram of the first locking structure and the second locking structure of the embodiment of the present application being connected in a first implementation manner;

[0030] Fig.13 is a schematic diagram of a second implementation of the first locking structure of an embodiment of the present application;

[0031] Fig.14 is a schematic diagram of a second implementation of the second locking structure of an embodiment of the present application;

[0032] Fig.15 is a schematic diagram of the first locking structure and the second locking structure of the embodiment of the present application being connected in a second implementation manner;

[0033] Fig.16 is a schematic diagram of the first locking structure and the second locking structure of the embodiment of the present application being connected in a third implementation manner;

[0034] Fig.17 is a schematic diagram of an oblong hole of a sliding portion of an embodiment of the present application;

[0035] Fig.18 It is a schematic diagram of the third implementation manner of the second locking structure of the embodiment of the present application. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solution of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment provides a card holder 100 for an electric energy meter. The card holder 100 is set on the electric energy meter 300 by clamping, and the host 200 is fixed on the card holder 100. The host 200 is connected to the electric energy meter 300 through a test line for calibrating the electric energy meter 300.

[0039] like Figure 2 and Figure 3 As shown, the card holder 100 of the electric energy meter includes a housing 1, a card plate 2, an elastic member 3 and a first locking structure 4.

[0040] like Figure 4 As shown, the overall shape of the housing 2 of this embodiment is a rectangular parallelepiped, the interior of the housing is a cavity 11, and openings are respectively arranged on both sides of the cavity 11.

[0041] like Figure 5 As shown, the card plate 2 includes a sliding portion 21 and a clamping portion 22. In this embodiment, the width of the clamping portion 22 is greater than the width of the sliding portion 21, the sliding portion 21 and the clamping portion 22 are perpendicular to each other, and one end of the sliding portion 21 is connected to the side wall of the clamping portion 22. The portion of the clamping portion 22 located above the sliding portion 21 can be used by an operator to pull the card plate 2, and the portion of the clamping portion 22 located below the sliding portion 21 is used to clamp the electric energy meter.

[0042] like Figure 6 As shown, there are two card plates 2, namely, a first card plate 2a and a second card plate 2b, which are symmetrically arranged. The sliding portion of the first card plate 2a and the sliding portion of the second card plate 2b can slide into the cavity 11 through the openings on both sides of the shell 1. The sliding of the first card plate 2a and the second card plate 2b makes the two move closer to or farther from each other. The clamping portion of the first card plate 2a and the clamping portion of the second card plate 2b are both located on the outside of the shell 1.

[0043] like Figure 7 As shown, the elastic member 3 of this embodiment is a spring. As required, the elastic member 3 may also be selected from other forms of elastic elements. A lug 23 is provided on the sliding portion 21 of the card plate 2. One end of the elastic member 3 is connected to the lug 23 of the sliding portion of the first card plate 2a, and the other end of the elastic member 3 is connected to the lug 23 of the sliding portion of the second card plate 2b. When no external force is applied, the elastic member 3 makes the sliding portion of the first card plate 2a abut against the sliding portion of the second card plate 2b. The operator pulls the first card plate 2a and the second card plate 2b respectively, and the first card plate 2a and the second card plate 2b are separated, so that the electric energy meter can be clamped.

[0044] The first locking structure 4 is disposed on the housing 1. The host 200 of the electric energy meter calibration device is provided with a second locking structure that matches the first locking structure 4. The host 200 is fixed on the card holder 100 by locking the first locking structure 4 with the second locking structure.

[0045] The holder 100 of the present embodiment clamps the electric energy meter 300 , and the host 200 is fixed on the holder 100 , which facilitates the calibration of the electric energy meter 300 and improves the calibration efficiency.

[0046] like Figure 8As shown, according to an optional technical solution of the present application, the housing 1 includes an upper shell 12 and a bottom cover 13. The interior of the upper shell 12 is a groove 121 with an opening at the bottom end, and openings are respectively arranged on both sides of the groove 121. The bottom cover 13 closes the bottom opening of the upper shell 12 to form a cavity 11. In this embodiment, a threaded hole 123 is provided on the upper shell 12, and a through hole 131 corresponding to the threaded hole 123 is provided on the bottom cover 13. The screw passes through the through hole 131 and is connected to the threaded hole 123 to fix the upper shell 12 and the bottom cover 13 together.

[0047] According to an optional technical solution of the present application, a first guide rail 122 is provided on the top surface of the cavity 11 of the shell, that is, the first guide rail 122 is provided on the inner top surface of the upper shell 12, and the first guide rail 122 extends from one side opening of the shell to the other side opening. The sliding parts 21 of the first card plate 2a and the second card plate 2b are both provided with a guide groove 24 that cooperates with the first guide rail 122. When the sliding part 21 penetrates into the cavity 11 and slides in the cavity 11, the first guide rail 122 and the guide groove 24 play a guiding role.

[0048] According to an optional technical solution of the present application, the clamping plate 2 further includes a rubber pad 25. The rubber pad 25 is arranged on the inner side of the clamping portion 22, that is, the side where the sliding portion 21 is located. The rubber pad 25 is located at the bottom end of the clamping portion 22. The rubber pad 25 is arranged on the clamping portion 22 to prevent the clamping portion 22 from damaging the electric energy meter, and at the same time improve the friction force, so that the clamping portion 22 can clamp the electric energy meter.

[0049] According to an optional technical solution of the present application, there are multiple elastic members 3, which are respectively arranged on the front and rear sides or the upper surface or the lower surface of the sliding portion 21, which can improve the clamping force of the card holder 100. In this embodiment, there are two elastic members 3.

[0050] Example 2

[0051] This embodiment provides an electric energy meter calibration device, which includes: the above-mentioned card holder 100 and a host 200. The host 200 has an electric energy meter calibration function. The host 200 is provided with a second locking structure, and the host 200 is set on the card holder 100 through the cooperation of the first locking structure 4 and the second locking structure.

[0052] like Fig. 9 , Fig.10 and Fig.11 As shown, according to an optional technical solution of the present application, the first locking structure 4 includes: a connecting column 41 and a first clamping block 42. The length and width of the first clamping block 42 are both greater than the diameter of the connecting column 41. The connecting column 41 is arranged on the upper surface of the housing 1, and the first clamping block 42 is arranged on the upper surface of the connecting column 41, and a gap is formed between the first clamping block 42 and the upper surface of the housing 1. Optionally, the first locking structure 4 is integrally formed with the upper shell 12.

[0053] The second locking structure includes a first card slot 210 and a limiting plate 220. The first card slot 210 is arranged on the bottom surface of the host 200. In this embodiment, the first card slot 210 is basically located at the center of the bottom surface of the host 200. The width of the first card slot 210 is greater than the width of the first card block 42, and the first locking structure 4 can slide in the first card slot 210. The limiting plate 220 closes the partial opening of the first card slot 210 near the rear end of the first card slot 210. A notch 221 is provided on the limiting plate 220, and the width of the notch 221 is less than the width of the first card block 42 and greater than the diameter of the connecting column 41. The connecting column 41 can slide into the notch 221, and the first card block 42 is located between the limiting plate 220 and the bottom surface of the first card slot 210. Protrusions 211 are respectively provided on the opposite side walls of the first slot 210, and the protrusions 211 are covered by the limiting plate 220. The distance between the two protrusions 211 and the width of the first block 42 are transition fit or interference fit. The protrusions 211 are made of elastic material and there are two of them.

[0054] like Fig.12 As shown, when the host 200 is installed on the card holder 100, the unclosed opening of the first card slot 210 is aligned with the first card block 42, the first locking structure 4 enters the first card slot 210, and the host 200 is pushed, and the host 200 slides relative to the card holder 100 until the connecting column 41 enters the notch 221. At this time, the two protrusions 211 clamp the first card block 42 to fix the host. When disassembling, the host 200 can be separated from the card holder 100 by pushing the host 200 in the opposite direction.

[0055] like Fig.13 , Fig.14 and Fig.15 As shown, according to an optional technical solution of the present application, the first locking structure 4 includes two second guide rails 43 and a second clamping block 44. The two second guide rails 43 are arranged on the upper surface of the shell 1 in parallel with each other, and the second guide rails 43 extend from the front end of the shell 1 to the rear end of the shell 1. The second clamping block 44 is arranged between the two second guide rails 43 and is located on the upper surface of the shell 1. The second clamping block 44 of the present embodiment is a regular hexagon. Optionally, the second clamping block 44 can also be set to other shapes as needed. The thickness of the second clamping block 44 is less than the thickness of the second guide rail 43. The cross-section of the second guide rail 43 of the present embodiment is approximately an "inverted L" shape, which is convenient for locking with the host 200. Optionally, the first locking structure 4 is integrally formed with the upper shell 12.

[0056] The second locking structure includes a second card slot 230 and an elastic card 240. The second card slot 230 is arranged on the bottom surface of the host 200 and extends to the front end surface 200a of the host. The shape of the side wall of the second card slot 230 corresponds to the shape of the second guide rail 43. The two second guide rails 43 can slide into the second card slot 230 and respectively engage with the side walls of the second card slot 230. The elastic card 240 extends from the rear end surface 230b of the second card slot to the front end of the second card slot 230. A hook 241 is provided at one end of the elastic card 240 away from the rear end surface of the second card slot. The elastic card 240 is made of elastic material and there are two of them.

[0057] When the host 200 is installed on the card holder 100, the second guide rail 43 is slid into the second card slot 230, the elastic card 240 contacts the second card block 44, and the two elastic cards 240 slide along the side walls of the second card block 44 respectively until the rear end face of the second guide rail 43 abuts against the rear end face 230b of the second card slot, and the hook 241 of the elastic card 240 hooks the second card block to fix the host.

[0058] like Fig.16 , Fig.17 and Fig.18 As shown, according to an optional technical solution of the present application, the housing 1 is provided with a through hole 14 that passes through from top to bottom, and optionally, the number of the through holes 14 is multiple. The sliding portion 21 of the card plate is provided with an oblong hole 26, and the oblong hole 26 extends along the sliding direction of the card plate 2. In this embodiment, the oblong hole 26 is provided on both the first card plate 2a and the second card plate 2b. The first locking structure 4 includes a screw 45, and the screw 45 can pass through the oblong hole 26 and the through hole 14.

[0059] The second locking structure includes a threaded hole 250 disposed on the bottom surface of the host 200. The threaded hole 250 corresponds to the through hole 14.

[0060] When the host 200 is mounted on the card base 100, the threaded hole 250 is aligned with the through hole 14, and the screw 45 passes through the corresponding through hole 14 and the oblong hole 26 and connects with the threaded hole 250 to fix the host 200. Since the oblong hole 26 is provided on the card plate 2, the card plate 2 will not interfere with the screw 45 when sliding.

[0061] Optionally, a hanging rope structure is provided on the outer wall of the host 200, and the hanging rope structure can be a hanging column or a hanging ear, and a hanging rope is provided on the hanging column or the hanging ear. As needed, the host 200 can be hung on the electric energy meter to be inspected or on surrounding objects.

[0062] This embodiment also provides a method for calibrating an electric energy meter, which is implemented using the above electric energy meter calibration device, and the method includes:

[0063] S1. The host is placed on the housing of the card holder, and the first locking structure and the second locking structure are locked.

[0064] S2. Pull the first clamping plate and the second clamping plate toward both sides so that the clamping parts of the first clamping plate and the second clamping plate clamp the electric energy meter.

[0065] S3. Connect the test line of the host to the electric energy meter to calibrate the electric energy meter.

[0066] Optionally, when the electric energy meter is to be calibrated as needed, the host can be hung on the electric energy meter to be inspected or on surrounding objects through a hanging rope structure, and a handheld mode can be selected for on-site testing.

[0067] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core ideas of the present application. Therefore, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. An electric energy meter calibration device, characterized in that: include: A card holder and a host of an electric energy meter, wherein the card holder comprises: A shell, wherein the interior of the shell is a cavity with openings on both sides; A card plate, comprising a sliding portion and a clamping portion, wherein the sliding portion is located on a side wall of the clamping portion, and the number of the card plates is two, wherein the sliding portion of the first card plate and the sliding portion of the second card plate are respectively slidably inserted into the cavity through the openings on both sides of the shell; an elastic member, one end of which is connected to the sliding portion of the first card plate, and the other end of which is connected to the sliding portion of the second card plate, and the elastic member causes the sliding portion of the first card plate to abut against the sliding portion of the second card plate; A first locking structure is provided on the housing and is used to detachably connect the host so that the host is fixed on the card holder. The first locking structure includes: Two second guide rails are arranged parallel to each other on the upper surface of the housing; A second clamping block is disposed between the two second guide rails and is located on the upper surface of the housing, wherein the second clamping block is a regular hexagon and has a thickness smaller than that of the second guide rails; The host is used for calibrating the electric energy meter, and the host includes a second locking structure that cooperates with the first locking structure, and the second locking structure includes: A second card slot is provided on the bottom surface of the host and extends to the front surface of the host, and the two second guide rails can slide into the second card slot and engage with the second card slot; Two elastic clips extend from the rear end surface of the second card slot to the front end surface of the second card slot, and when the rear end surface of the second guide rail abuts against the rear end surface of the second card slot, the elastic clips hook the second card block; The distance between the two elastic cards is greater than the side length of the second card block.

2. The electric energy meter calibration device according to claim 1, characterized in that: The housing comprises an upper shell and a bottom cover, wherein the bottom cover closes the bottom end opening of the upper shell to form the cavity.

3. The electric energy meter calibration device according to claim 1, characterized in that: A first guide rail is disposed on the top surface of the cavity of the shell, and the sliding parts of the first clamping plate and the second clamping plate are both provided with guide grooves matched with the first guide rail.

4. The electric energy meter calibration device according to claim 1, characterized in that: The clamping plate further comprises a rubber pad, and the rubber pad is arranged on the inner side surface of the clamping portion.

5. The electric energy meter calibration device according to claim 1, characterized in that: The number of the elastic members is plural.

6. The electric energy meter calibration device according to claim 1, characterized in that: A hanging rope structure is arranged on the outer wall of the main machine.

7. A method for calibrating an electric energy meter, characterized in that: Utilizing the electric energy meter calibration device of claim 6, the method comprises: The host is arranged on the housing of the card holder, and the first locking structure and the second locking structure are locked, Pull the first clamping plate and the second clamping plate toward both sides so that the clamping parts of the first clamping plate and the second clamping plate clamp the electric energy meter. Verify the energy meter through the host; or, The host is hung by the hanging rope structure, and the electric energy meter is calibrated by the host.

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