CN213149141U

CN213149141U - Direct current trial delivery instrument

Info

Publication number: CN213149141U
Application number: CN202021173179.8U
Authority: CN
Inventors: 叶宗来
Original assignee: Baoding Zhongde Keyi Electric Technology Co ltd
Current assignee: Baoding Zhongde Keyi Electric Technology Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-05-07
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a direct current trial delivery instrument, which comprises an instrument shell, a voltage indicating instrument, a current display instrument, a DC socket, a protective resistor, a grounding rod component, a power socket switch and a voltage adjusting knob, wherein a group of protective resistors are connected in series inside the instrument shell, and the tail end of the resistor rod of the protective resistor is provided with a protective spring and a protective plate, so as to avoid the error adjustment of the protective resistor to the minimum state by an operator, when the direct current trial delivery instrument starts to operate, if the external circuit does not install a load, the transient current in the trial delivery instrument can be avoided from being overlarge through the resistance of the resistor rod in the protective resistor, thereby protecting other electric equipment in the trial delivery instrument, and meanwhile, the bendable or prolonged grounding rod component is additionally arranged to adapt to the grounding discharge work under different use conditions, the utility model has complete and reasonable structure, effectively improves the safety in the use process, and normal work of other power equipment in the test delivery instrument is ensured, so that the service life of the direct-current test delivery instrument is prolonged.

Description

Direct current trial delivery instrument

Technical Field

The utility model relates to a power equipment technical field specifically is a direct current examination send appearance.

Background

The direct current test-sending instrument is mainly used for voltage withstand tests before power transmission of various distribution network lines, so as to thoroughly overcome accident potential caused by traditional power transmission based on line insulation, solve the contradiction that a dispatching station and a power distribution department tear skins, structurally adopts a single-frame core type iron core structure, a primary winding and a high-voltage winding are coaxially wound on the iron core, so that magnetic leakage flux is reduced, coupling among the windings is increased, the overall structure of a product is compact, the universality is strong, the use and carrying are convenient, the direct current test-sending instrument is suitable for detecting the insulation performance of various high-voltage electrical equipment on site by a power system and power users, and is a necessary test instrument for power equipment detection and preventive tests, when the direct current test-sending instrument in the prior art is used for carrying out direct current transmission tests, if an external line is not connected with a load, the direct short circuit can occur at the moment of connection of the test-sending instrument, so that other measuring components in, thereby causing the rejection of the test delivery instrument.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct current trial delivery instrument, which is characterized in that a group of protective resistors are connected in series inside the instrument shell on the basis of the existing direct current trial delivery instrument, the tail end of the resistance rod of the protection resistor is provided with a protection spring and a protection plate, so that the protection resistor is prevented from being adjusted to the minimum state by an operator, when the DC trial transmission instrument starts to operate, if no load is installed on an external circuit, the instantaneous current in the trial transmission instrument can be prevented from being too large by protecting the resistance of the resistance rod in the resistance so as to protect other power equipment in the trial transmission instrument, meanwhile, a bendable or prolonged grounding rod component is additionally arranged to adapt to grounding discharge work under different use conditions, the safety of this equipment in effectively improving the use guarantees to try to send the inside other electrical equipment normal work of appearance to prolonged the direct current and tried the life who sends the appearance, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

a direct current trial delivery instrument comprises an instrument shell, a current setter, a time setter, a voltage indicator, a current display instrument, a DC socket, a protective resistor, an alarm port, a grounding rod assembly, a power socket switch, an indicator nameplate, a voltage adjusting knob, a time switch, a start button and a stop button, wherein the current setter is arranged at the upper left end of the front surface of the instrument shell, the time setter is arranged at the right side of the current setter, the voltage display instrument is arranged at the right side of the time setter, the current indicator is arranged at the right side of the voltage indicator, the DC socket is arranged below the current setter, the alarm port is arranged at the lower side of the DC socket, the protective resistor is arranged at the right sides of the DC socket and the alarm port, the grounding rod assembly is installed at the lower side of the alarm port, the power socket switch is arranged at the right side of the grounding rod assembly, the indicator nameplate is arranged at the right side of the protective resistor, the right side of instructing the data plate is equipped with voltage control knob, the below of instructing the data plate is equipped with time switch, time switch's right side is equipped with the start button, the right side of start button is equipped with stop button.

Preferably, the instrument shell is including integrating shell, base frame, bolt counter bore, fixing bolt, central baffle, reset spring, limiting plate, activity otic placode and bolt groove, the bottom of integrating the shell is equipped with base frame, the four corners department of integrating the shell is equipped with the bolt counter bore respectively, install fixing bolt in the bolt counter bore, base frame's center department is equipped with central baffle, the both ends of central baffle are equipped with reset spring respectively, reset spring's end is equipped with the limiting plate, the outside of limiting plate is equipped with the activity otic placode, be equipped with the bolt groove on the activity otic placode.

Preferably, the protection resistor comprises an outer base, a connector, a built-in wire, a resistor rod, a protection spring, a protection plate, a conductor sliding block, an insulation sleeve, a connecting rod and an adjusting slide button, wherein the connector is arranged on the outer side of the outer base, the built-in wire is installed in the connector, the resistor rod is arranged between the outer bases, the upper side of the resistor rod is arranged on the outer side of the end of the resistor rod, the protection plate is arranged at the tail end of the protection spring, the conductor sliding block is installed on the resistor rod, the insulation sleeve is respectively arranged on the upper side and the lower side of the conductor sliding block, the connecting rod is arranged on the upper side of the conductor sliding block.

Preferably, the grounding rod subassembly includes ground connection head, insulator foot, flexible embedded rod, insulating protective sleeve, spacing head, buffer spring, flexible outer pole, embedded head, extension rod, outer conductor pole and ground chain mounting hole, the upside of ground connection head is equipped with insulator foot, insulator foot's upside is equipped with flexible embedded rod, the flexible insulating protective sleeve of installing on the embedded rod, the flexible end that inlays the pole is equipped with the spacing head, the upside of spacing head is equipped with buffer spring, the flexible outside that inlays the pole is equipped with flexible outer pole, the top of flexible outer pole is equipped with embedded head, the upside installation extension rod of embedded head, outer conductor pole is installed at the top of extension rod, the upside of outer conductor pole is equipped with the ground chain mounting hole.

Preferably, the adjusting slide button is embedded in a sliding groove on the surface of the instrument shell.

Preferably, the upper end and the lower end of the buffer spring are respectively welded to the telescopic outer rod and the limiting head.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses the appearance is sent in the direct current examination, on the basis of the appearance is sent in the current direct current examination, a set of protective resistance of series connection in the inside of instrument housing, the end of the resistance pole of this protective resistance is equipped with protection spring and protection shield, avoid the operator to adjust the protective resistance mistake into minimum state, when the appearance begins to operate is sent in the direct current examination, if the external circuit does not install the load, then the resistance size of accessible protective resistance internal resistance pole, avoid trying to send the electric current in the appearance too big in the twinkling of an eye, with this other power equipment in the appearance is sent in the protection examination, install the earthing rod subassembly of flexible or extension additional simultaneously, adapt to the ground connection discharge work under the different situation of use, the utility model discloses it is complete reasonable in structure, effectively improve the security in the use, guarantee to try to send the inside other power equipment normal work of appearance, thereby the life of appearance is sent in the direct current examination has.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

FIG. 2 is a schematic view of the bottom structure of the instrument housing of the present invention;

fig. 3 is a schematic structural diagram of the protection resistor of the present invention;

fig. 4 is a schematic view of a partial cross-sectional structure of the ground rod assembly of the present invention.

In the figure: 1. an instrument housing; 101. an integrated housing; 102. a base frame; 103. a bolt counter bore; 104. fixing the bolt; 105. a central partition; 106. a return spring; 107. a limiting plate; 108. a movable ear plate; 109. a bolt slot; 2. a current setter; 3. a time setter; 4. a voltage indicating instrument; 5. a current display instrument; 6. a DC outlet; 7. a protection resistor; 71. an outer base; 72. a connector; 73. a lead is arranged inside; 74. a resistance rod; 75. a protection spring; 76. a protection plate; 77. a conductor slider; 78. an insulating sleeve; 79. a connecting rod; 710. adjusting a slide button; 8. an alarm port; 9. a ground bar assembly; 91. a grounding head; 92. an insulating base; 93. a telescopic embedded rod; 94. an insulating protective sleeve; 95. a limiting head; 96. a buffer spring; 97. a telescopic outer rod; 98. embedding a head; 99. an extension pole; 910. an outer conductor bar; 911. a ground chain mounting hole; 10. a power socket switch; 11. an indicating nameplate; 12. a voltage adjustment knob; 13. a time switch; 14. a start button; 15. a stop button.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a direct current trial delivery instrument comprises an instrument shell 1, a current setting device 2, a time setting device 3, a voltage indicating instrument 4, a current display instrument 5, a DC socket 6, a protective resistor 7, an alarm port 8, a grounding rod assembly 9, a power socket switch 10, an indicating nameplate 11, a voltage adjusting knob 12, a time switch 13, a start button 14 and a stop button 15, wherein the current setting device 2 is arranged at the left upper end of the front surface of the instrument shell 1, the time setting device 3 is arranged at the right side of the current setting device 2, the voltage indicating instrument 4 is arranged at the right side of the time setting device 3, the current display instrument 5 is arranged at the right side of the voltage indicating instrument 4, the DC socket 6 is arranged below the current setting device 2, the alarm port 8 is arranged at the lower side of the DC socket 6, the protective resistor 7 is arranged at the right side of the DC socket 6 and the alarm port 8, the grounding rod assembly 9 is arranged at the lower side, ground rod subassembly 9's right side is equipped with supply socket switch 10, and protective resistance 7's right side is equipped with instructs data plate 11, and the right side of instructing data plate 11 is equipped with voltage control knob 12, and the below of instructing data plate 11 is equipped with time switch 13, and time switch 13's right side is equipped with start button 14, and start button 14's right side is equipped with stop button 15.

Referring to fig. 2, the instrument housing 1 includes an integrated housing 101, a base frame 102, bolt counterbores 103, fixing bolts 104, a central partition 105, a return spring 106, a limiting plate 107, a movable lug 108 and a bolt groove 109, the base frame 102 is disposed at the bottom of the integrated housing 101, the bolt counterbores 103 are disposed at four corners of the integrated housing 101, the fixing bolts 104 are installed in the bolt counterbores 103, the central partition 105 is disposed at the center of the base frame 102, the return springs 106 are disposed at two ends of the central partition 105, the limiting plate 107 is disposed at the end of the return spring 106, the movable lug 108 is disposed at the outer side of the limiting plate 107, and the bolt groove 109 is disposed on the movable lug 108.

Referring to fig. 3, the protection resistor 7 includes an outer base 71, a connector 72, an internal wire 73, a resistor rod 74, a protection spring 75, a protection plate 76, a conductor slider 77, an insulation sleeve 78, a connecting rod 79 and an adjusting slider 710, the connector 72 is disposed outside the outer base 71, the internal wire 73 is mounted in the connector 72, the resistor rod 74 is disposed between the outer bases 71, the protection spring 75 is disposed outside the moat end of the upper resistor rod 74, the protection plate 76 is disposed at the end of the protection spring 75, the conductor slider 77 is mounted on the resistor rod 74, the insulation sleeves 78 are disposed on the upper and lower sides of the conductor slider 77, the connecting rod 79 is disposed on the upper side of the conductor slider 77, the adjusting slider 710 is disposed at the end of the connecting rod 79, and the adjusting slider 710 is mounted in a sliding slot on the.

Referring to fig. 4, the grounding rod assembly 9 includes a grounding head 91, an insulating base 92, a retractable embedded rod 93, an insulating sheath 94, and a position-limiting head 95, buffer spring 96, flexible outer pole 97, embedded head 98, extension rod 99, outer conductor pole 910 and ground chain mounting hole 911, the upside of ground connection 91 is equipped with insulating base 92, the upside of insulating base 92 is equipped with flexible embedded pole 93, install insulating protective sheath 94 on the flexible embedded pole 93, the end of flexible embedded pole 93 is equipped with spacing head 95, the upside of spacing head 95 is equipped with buffer spring 96, the outside of flexible embedded pole 93 is equipped with flexible outer pole 97, buffer spring 96's upper and lower both ends weld respectively in flexible outer pole 97 and spacing head 95, the top of flexible outer pole 97 is equipped with embedded head 98, the upside installation extension rod 99 of embedded head 98, outer conductor pole 910 is installed at the top of extension rod 99, the upside of outer conductor pole 910 is equipped with ground chain mounting hole 911.

The utility model discloses difference with prior art: when the direct current test transmission instrument in the prior art is used for carrying out direct current transmission test, if an external circuit is not connected with a load, the direct short circuit problem occurs at the moment of connection of the test transmission instrument, thereby causing the damage of other measuring parts in the whole trial-sending instrument due to overlarge instantaneous current and further causing the scrapping of the trial-sending instrument, on the basis of the existing direct current test delivery instrument, a group of protective resistors 7 are connected in series inside the instrument shell 1, the end of the resistance rod 74 of the protective resistor 7 is provided with a protective spring 75 and a protective plate 76, so that the protective resistor 7 is prevented from being adjusted to the minimum state by an operator, when the dc test transmission instrument starts to operate, if no load is mounted on the external line, the instantaneous current in the test transmission instrument can be prevented from being too large by the resistance of the resistance rod 74 in the protection resistor 7, thereby protecting other electric devices in the test transmission instrument.

In summary, the following steps: the DC trial delivery instrument of the utility model is based on the prior DC trial delivery instrument, a group of protective resistors 7 are connected in series inside the instrument shell 1, the end of the resistance rod 74 of the protective resistor 7 is provided with a protective spring 75 and a protective plate 76, so that the protective resistor 7 is prevented from being adjusted to the minimum state by an operator, when the DC test transmission instrument starts to operate, if no load is installed on an external circuit, the instant current in the test transmission instrument can be prevented from being overlarge through the resistance of the resistance rod 74 in the protective resistor 7, so that other electric equipment in the test transmission instrument can be protected, install the earthing rod subassembly 9 of flexible or extension simultaneously additional, adapt to the ground connection discharge work under the different use situation, the utility model discloses it is complete reasonable in structure, effectively improve the security in the use, guarantee to try to send other power equipment normal work inside the appearance to the life of direct current try to send the appearance has been prolonged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a direct current tries to send appearance, includes instrument shell (1), current setting ware (2), time setting ware (3), voltage indicating instrument (4), current display instrument (5), DC socket (6), protective resistor (7), warning mouth (8), earth bar subassembly (9), supply socket switch (10), instruction data plate (11), voltage control knob (12), time switch (13), start button (14) and stop button (15), its characterized in that: the instrument comprises an instrument shell (1), wherein a current setting device (2) is arranged at the upper left end of the front side of the instrument shell (1), a time setting device (3) is arranged on the right side of the current setting device (2), a voltage indicating instrument (4) is arranged on the right side of the time setting device (3), a current display instrument (5) is arranged on the right side of the voltage indicating instrument (4), a DC socket (6) is arranged below the current setting device (2), an alarm opening (8) is arranged on the lower side of the DC socket (6), protective resistors (7) are arranged on the right sides of the DC socket (6) and the alarm opening (8), a grounding rod assembly (9) is installed on the lower side of the alarm opening (8), a power socket switch (10) is arranged on the right side of the grounding rod assembly (9), an indicating nameplate (11) is arranged on the right side of the protective resistors (7), a voltage adjusting knob (12) is arranged on the, the lower part of the indication nameplate (11) is provided with a time switch (13), the right side of the time switch (13) is provided with a starting button (14), and the right side of the starting button (14) is provided with a stopping button (15).

2. The dc test delivery instrument of claim 1, wherein: the instrument shell (1) comprises an integrated shell (101), a base frame (102), a bolt counter bore (103), a fixed bolt (104), a central partition plate (105), a return spring (106), a limiting plate (107), a movable lug plate (108) and a bolt groove (109), a base frame (102) is arranged at the bottom of the integrated shell (101), bolt counter bores (103) are respectively arranged at the four corners of the integrated shell (101), a fixing bolt (104) is arranged in the bolt counter bore (103), a central clapboard (105) is arranged at the center of the base frame (102), two ends of the central clapboard (105) are respectively provided with a return spring (106), the tail end of the return spring (106) is provided with a limit plate (107), the outside of limiting plate (107) is equipped with activity otic placode (108), be equipped with bolt groove (109) on activity otic placode (108).

3. The dc test delivery instrument of claim 1, wherein: the protective resistor (7) comprises an outer base (71), a connector (72), a built-in lead (73), a resistor rod (74), a protective spring (75), a protective plate (76), a conductor slide block (77), an insulating sleeve (78) and an adjusting slide button (710) of a connecting rod (79), a connector (72) is arranged on the outer side of the outer base (71), a built-in lead (73) is arranged in the connector (72), a resistance rod (74) is arranged between the outer bases (71), a protective spring (75) is arranged at the outer side of the mouted end of the resistance rod (74) at the upper side, a protective plate (76) is arranged at the tail end of the protective spring (75), a conductor sliding block (77) is arranged on the resistance rod (74), the upper side and the lower side of the conductor sliding block (77) are respectively provided with an insulating sleeve (78), the upside of conductor slider (77) is equipped with connecting rod (79), the terminal of connecting rod (79) is equipped with regulation slide button (710).

4. The dc test delivery instrument of claim 1, wherein: the grounding rod assembly (9) comprises a grounding head (91), an insulating base (92), a telescopic embedded rod (93), an insulating protective sleeve (94), a limiting head (95), a buffer spring (96), a telescopic outer rod (97), an embedded head (98), an extension rod (99), an outer conductor rod (910) and a grounding chain mounting hole (911), wherein the insulating base (92) is arranged on the upper side of the grounding head (91), the telescopic embedded rod (93) is arranged on the upper side of the insulating base (92), the insulating protective sleeve (94) is arranged on the telescopic embedded rod (93), the limiting head (95) is arranged at the tail end of the telescopic embedded rod (93), the buffer spring (96) is arranged on the upper side of the limiting head (95), the telescopic outer rod (97) is arranged on the outer side of the telescopic embedded rod (93), the embedded head (98) is arranged at the top of the telescopic outer rod (97), and the extension rod (99) is arranged on the upper side of the embedded head (98), an outer conductor rod (910) is mounted at the top of the extension rod (99), and a grounding chain mounting hole (911) is formed in the upper side of the outer conductor rod (910).

5. A dc test delivery instrument as recited in claim 3, wherein: the adjusting slide button (710) is embedded in a sliding groove on the surface of the instrument shell (1).

6. The dc test delivery instrument of claim 4, wherein: the upper end and the lower end of the buffer spring (96) are respectively welded on the telescopic outer rod (97) and the limiting head (95).