CN114364181A

CN114364181A - Power grid primary and secondary fusion analog-to-digital conversion system and module plug-in and locking structure thereof

Info

Publication number: CN114364181A
Application number: CN202210037725.2A
Authority: CN
Inventors: 谢郴恒
Original assignee: Shenzhen Li Wei Electrical Co ltd
Current assignee: Shenzhen Li Wei Electrical Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-04-15

Abstract

The invention discloses a primary and secondary power grid fusion analog-to-digital conversion system and a module plug-in and locking structure thereof, wherein the locking structure comprises: the device comprises a bracket, a spring, a lock pin, a nut for assembling and disassembling, a pressing block for fixing and an assembling and disassembling rod; the bracket is horizontally arranged; the spring is horizontally arranged in the spring limiting structure; the lock pin comprises a lock pin head, a lock pin main body and a shifting shaft; a nut for mounting and dismounting, which is arranged below the lock pin; one end of the fixing pressing block is fixed on the module bottom plate, and the other end of the fixing pressing block is buckled on the assembling and disassembling nut; one end of the assembling and disassembling rod is an assembling and disassembling screw rod, and the other end of the assembling and disassembling rod is an operating rod. The system separates the analog-digital conversion circuit from the FTU, is installed nearby beside the primary switch and adopts the locking structure of the module plug-in unit for installation and disassembly, and has low cost and convenient maintenance and updating.

Description

Power grid primary and secondary fusion analog-to-digital conversion system and module plug-in and locking structure thereof

Technical Field

The invention relates to the technical field of primary and secondary fusion of power networks, in particular to a primary and secondary fusion analog-to-digital conversion system of a power network and a module plug-in and locking structure thereof.

Background

Referring to fig. 1, with the development of the national power grid technology, a power grid employs a primary switch 100 including an electromagnetic sensor 120 and other functional modules 110 of the primary switch for controlling a main power line, and a secondary power distribution switch monitoring terminal 200 including an analog-to-digital conversion circuit 413 and other modules 210 of the secondary power distribution switch monitoring terminal for monitoring, measuring and controlling the operation of the primary switch 100, wherein when a fault occurs in the power grid line, the secondary power distribution switch monitoring terminal 200 can timely monitor, measure and control the operation of the primary switch 100. The signal that primary switch 100 feedbacks is voltage or current signal, gather with PT (voltage transformer), CT (current transformer) respectively, the information feedback after the collection carries out the exchange of information to secondary distribution switch monitor terminal 200, FTU (secondary distribution switch monitor terminal), FTU carries out the information with main website (not shown in the figure) again, main website issues corresponding order according to the condition, adjust and control primary switch 100, realize functions such as fault location, fault isolation and the regional quick recovery power supply of non-trouble. At present, the commonly used CT and PT adopt independent electromagnetic structures, and voltage and current signals of a circuit are collected to be analog quantities. The FTU is directly connected with the switch, analog signals are processed through the FTU, and corresponding control is carried out on the switch through judgment according to the specific condition of the signals. The signal data amplitude of the CT and PT of the electromagnetic structure is large, and the CT and PT can transmit a long distance (such as 15 meters) without obvious attenuation. In the prior art, two combined cables which are dozens of meters long are needed between the FTU and the switch, so that the cost is high; because the analog-to-digital conversion equipment is installed in the FTU, if the analog-to-digital conversion equipment is maintained and updated, the whole FTU can only be detached, and the FTU is generally installed on a telegraph pole with the height of 10 meters, so that the operation is inconvenient.

Disclosure of Invention

The invention mainly aims to provide a power grid primary and secondary fusion analog-to-digital conversion system and a module plug-in and locking structure thereof, aiming at the problems in the prior art, and the system is low in cost and convenient to maintain and update.

The technical scheme adopted by the invention is as follows:

in a first aspect, a locking structure of a module plug-in unit of a primary and secondary fusion analog-to-digital conversion system of a power grid is provided, which is applied to the primary and secondary fusion analog-to-digital conversion system of the power grid, the primary and secondary fusion analog-to-digital conversion system of the power grid comprises the module plug-in unit and a module accommodating bin, the module plug-in unit comprises a module and a locking structure, the module comprises a module housing, a module connector arranged at an opening at the upper end of the module housing, and an analog-to-digital conversion circuit arranged in the module and electrically connected with the module connector, the module accommodating bin comprises a module accommodating bin body and a locking platform, the module accommodating bin body comprises an accommodating bin housing, an accommodating bin connector module, an accommodating part and a first opening communicated with the accommodating part, the module accommodating bin is vertically arranged, the first opening faces downwards, and the module plug-in unit can be inserted into or removed from the accommodating part through the first opening, the locking structure is arranged in the module, a first through hole is formed in one side of the module shell, a second through hole for loading and unloading is formed in the bottom of the module shell, the locking platform is arranged on one side in the module accommodating bin body, one end, close to a first opening of the module accommodating bin body, of the locking platform is an inclined locking platform surface, the other end of the locking platform surface is a locking platform plane, when the module plug-in is inserted into the accommodating portion, the locking structure is matched with the locking platform so as to lock the module plug-in the module accommodating bin, and the locking structure comprises:

the support is horizontally arranged, one side of the support is fixed on the inner wall of the module shell, the other side of the support is provided with a spring support table, the support is provided with a spring limiting structure along the spring stretching direction, two sides of the support are respectively provided with a first sliding groove and a second sliding groove along the spring stretching direction, and one side of the support is provided with a protruding stop pin;

the spring is horizontally arranged in the spring limiting structure;

the lock pin comprises a lock pin head, a lock pin main body and a shifting shaft, wherein the lock pin main body is provided with a first lock pin rear end face in the middle of one side opposite to the lock pin head, one end of the spring is abutted against the spring support platform, the other end of the spring is abutted against the first lock pin rear end face, the lock pin head is arranged at one end of the lock pin main body, two sides of the lock pin main body are respectively provided with a first lock pin wingspan and a second lock pin wingspan, the first lock pin wingspan and the second lock pin wingspan are respectively placed in the first sliding groove and the second sliding groove and can move along the first sliding groove and the second sliding groove, the lock pin head can extend out of the first through hole when the spring is in a free state, one end of the lock pin head exposed outside the first through hole is an inclined lock pin head face upwards, the other end of the lock pin head face is a lock pin head plane, the shifting shaft is arranged on one side of the axis of the lock pin main body and protrudes downwards, the lock pin main body is provided with a lock pin second rear end face deviating from the central shaft on one side opposite to the lock pin head, the stop pin and the second rear end surface of the lock pin are oppositely arranged, when the stop pin is used for preventing the lock pin head from being excessively retracted into the first through hole and the second rear end surface of the lock pin is collided with the stop pin, the lock pin head is retracted into the first through hole;

the assembling and disassembling nut is arranged below the lock pin, threads are arranged on the inner side of the assembling and disassembling nut, one end of the threads of the assembling and disassembling nut faces to the second through hole, the other end of the threads of the assembling and disassembling nut is provided with a first stirring surface and a second stirring surface which are positioned in the radial direction, opposite to each other and vertically arranged of the assembling and disassembling nut, the first stirring surface is close to one side of the spring support table, the second stirring surface is close to one side of the lock pin head, and the stirring shaft is positioned between the first stirring surface and the second stirring surface;

one end of the fixing pressing block is fixed on the module bottom plate, the other end of the fixing pressing block is buckled on the assembling and disassembling nut, and the assembling and disassembling nut is arranged between the fixing pressing block and the module bottom plate and can rotate freely;

and the assembling and disassembling rod is provided with an assembling and disassembling screw rod at one end and an operating rod at the other end, threads are arranged on the outer side of the assembling and disassembling screw rod, and the assembling and disassembling screw rod can be screwed into the assembling and disassembling nut.

Optionally, the inclined surface of the locking pin head is a chamfer or a circular arc or an inclined surface.

Optionally, the spring limiting structure is composed of a first spring side blocking piece and a second spring side blocking piece which are arranged on two sides of the upper spring of the support and a spring top blocking piece arranged at the upper end of the upper spring of the support.

Optionally, a first slot and a second slot are formed in two sides of the rear end of the support, and when the spring is pressed, the first side blocking piece and the second side blocking piece of the spring can be inserted into the first slot and the second slot respectively.

Optionally, an inner spring support is arranged on the first rear end face of the lock pin, and one end of the spring is sleeved on the inner spring support.

Optionally, the first dial surface and the second dial surface are side end surfaces of two opposite segments arranged at one end of the nut for assembling and disassembling.

Optionally, the first sliding groove and the second sliding groove are open grooves facing the inner side of the bracket, the upper end of the first sliding groove and the upper end of the second sliding groove are respectively provided with a first sliding groove side wall and a second sliding groove side wall, and the side surfaces of the first sliding groove and the second sliding groove are respectively provided with a first sliding groove side wall and a second sliding groove side wall.

Optionally, two sides of the end face of the bracket near one end of the lock pin head are respectively provided with a first mounting lug and a second mounting lug, the module housing is provided with a first fixing hole and a second fixing hole, and the first mounting lug and the second mounting lug can be fixed on the side face of the module housing through screws and the first fixing hole and the second fixing hole.

Optionally, the cross section of the nut for assembling and disassembling is in a shape like a Chinese character 'tu', the fixed pressing block is buckled on a step in the shape like the Chinese character 'tu', and the nut for assembling and disassembling can rotate freely.

In a second aspect, a module plug-in for a primary and secondary power grid fusion analog-to-digital conversion system is provided, the primary and secondary power grid fusion analog-to-digital conversion system further includes a module storage bin, and the module plug-in includes:

a module detachably insertable into the module receiving compartment, an

In a first aspect, a locking structure of a module plug-in unit of a power grid primary and secondary fusion analog-to-digital conversion system is provided, and the locking structure is arranged in the module.

Optionally, the module connector is a plug, and module guide heads are arranged on the module shell around the plug of the module connector and used for being inserted and positioned with the storage bin connector module.

Optionally, the cross section of the module guide head is rectangular, and the upper end of the module guide head is an inclined surface of the module guide head with an inward closing-in.

Optionally, a sealing member is disposed around the module guide head.

In a third aspect, a power grid primary and secondary fusion analog-to-digital conversion system is provided, which includes:

the module storage bin comprises a module storage bin body and a locking platform, wherein the locking platform is arranged on the inner side surface of the module storage bin body, a locking platform guide inclined plane is arranged at the lower end of the locking platform, and a locking platform plane is arranged at the upper end of the locking platform; and

the power grid described in the second aspect is a module plug-in for a primary-secondary fusion analog-to-digital conversion system.

Preferably, the module accommodating bin body is provided with four module mounting guide rails, and the module plug-in is inserted or pulled out along the module mounting guide rails.

Preferably, the housing of the storage bin is provided with a signal input connector and a signal output connector which are respectively electrically connected with the connector of the storage bin.

Preferably, the housing of the storage bin is provided with a wire passing hole, and the connecting wire of the connector of the storage bin penetrates out of the wire passing hole.

According to the technical scheme, the invention has the following advantages: the system separates the analog-digital conversion circuit from the FTU, is installed nearby beside the primary switch and adopts the locking structure of the module plug-in unit for installation and disassembly, and has low cost and convenient maintenance and updating.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the embodiments and the drawings used in the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a block diagram of a prior art primary and secondary system of a power grid according to the present invention;

fig. 2 is a circuit block diagram of a primary and secondary power grid convergence system according to an embodiment of the invention;

fig. 3 is a schematic structural diagram of a primary-secondary fusion analog-to-digital conversion system of a power grid according to an embodiment of the present invention;

fig. 4 is a schematic plane view of a power grid primary-secondary fusion analog-to-digital conversion system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a module plug-in of the power grid primary-secondary fusion analog-to-digital conversion system according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a module card of the power grid primary-secondary fusion analog-to-digital conversion system according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a locking structure flip-chip placement structure of the power grid primary-secondary fusion analog-to-digital conversion system according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a normal placement structure of a locking structure of the power grid primary-secondary fusion analog-to-digital conversion system according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a bracket overturning and placing structure of a locking structure of a primary and secondary fusion analog-to-digital conversion system of a power grid according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a normal placement structure of a bracket of a locking structure of a primary-secondary fusion analog-to-digital conversion system of a power grid according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a lock pin flip-over structure of a locking structure of a primary-secondary fusion analog-to-digital conversion system of a power grid according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a normal arrangement structure of a lock pin of a locking structure of a primary-secondary fusion analog-to-digital conversion system of a power grid according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a nut for mounting and dismounting and a press block for fixing of a locking structure of the power grid primary-secondary fusion analog-to-digital conversion system according to the embodiment of the present invention;

fig. 14 is a schematic structural view of a mounting/dismounting rod of the power grid primary/secondary fusion analog-to-digital conversion system according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a primary-secondary fusion analog-to-digital conversion system of a power grid according to another embodiment of the present invention;

fig. 16 is a schematic diagram of a power grid primary-secondary fusion analog-to-digital conversion system according to another embodiment of the present invention.

Reference numerals:

100. a primary switch; 110. switching other functional modules for the first time; 120. an electromagnetic sensor; 130. an electronic sensor 130;

200. a secondary distribution switch monitoring terminal; 210. other modules of the secondary distribution switch monitoring terminal;

400. a module plug-in; 410. a module; 411. a module housing; 4111. a first through hole; 4112. a second through hole; 4113. a module housing base plate; 4114. a first fixing hole; 4115. a second fixing hole; 4116. a module guide head; 41161. a module guide head bevel; 4117. a seal member; 412. a module connector; 413. an analog-to-digital conversion circuit; 420: a locking structure; 421. a support; 4211. a spring support platform; 4212. a first chute; 42121. the upper side of the first chute; 42131. a first chute side wall; 4213. a second chute; 42122. the upper side of the second chute; 42132. a second chute side wall; 4214. a retaining pin; 4215. a spring limiting structure; 42151. a first spring side stop; 42152. a second spring side stop; 42153. a spring top catch; 4216. a first slot; 4217. a second slot; 4218. a first mounting ear; 4219. a second mounting ear; 422. a spring; 423. a lock pin; 4231. a latch head; 42311. a latch head inclined plane; 42312. a lockpin head plane; 4232. a lock pin body; 42321. a first rear end face of the lock pin; 42322. a first latch span; 42323. a second latch bolt span; 42324. a second rear end face of the lock pin; 42325. an inner spring strut; 4233. a shifting shaft; 424. a nut for mounting and dismounting; 4241. a first dial surface 4242 and a second dial surface; 425. a pressing block for fixing; 426. a loading and unloading rod; 4261. a screw for mounting and dismounting the mounting and dismounting rod; 4262. an operating lever;

500. a module storage bin; 510. a module storage bin body; 511. a housing of the storage bin; 5111. a top plate of the housing of the storage bin; 512. a storage bin connector module; 5121. a housing of the storage bin connector module; 51211. a second opening; 51212. an inner lead angle; 5122. a storage bin connector; 513. a housing part; 514. a first opening; 515. installing a guide rail on the module; 516. a signal input connector; 517. a signal output connector; 518. a wire passing hole; 520. a locking table; 521. a locking platform inclined surface; 522. locking the platform plane.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

The terms "first," "second," "third," and the like in the description and in the claims, and in the above-described drawings, are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The embodiments of the present invention will be described in detail below with reference to specific examples.

Referring to fig. 1-4, the electromagnetic sensors 120 used today are relatively expensive and have gradually moved to electronic sensors 130 (which may integrate current transformers with voltage transformers), which has brought new technology upgrade requirements. The use of electronic sensors 130 also places new upgrade requirements on the secondary distribution switch monitoring terminal 200 (FTU). Based on the above application scenarios, in cooperation with the function of the electronic sensor 130, part of the functions (collecting analog data, converting into digital data, etc.) of the FTU are separated out, and an analog-to-digital conversion circuit 413(ADMU module) (installed in the module plug-in 400) convenient to upgrade and maintain is formed. The analog-to-digital conversion circuit 413 is maintained in a design that can be replaced with electricity, and the analog-to-digital conversion circuit 413 can be mounted and dismounted at any time through an insulated mounting and dismounting rod 426 (see fig. 14). The analog-to-digital conversion circuit 413 can be upgraded and debugged before being replaced. Thus, the prefabricated building can be prefabricated in a factory and replaced on site. Part of functions of the secondary distribution switch monitoring terminal 200(FTU) are separated to form a module card 400 including an analog-to-digital conversion circuit 413, which is convenient to replace, and the module card 400 is installed in the module storage bin 500. If upgrading is required, the module plug-in 400 can be replaced in a live mode, and therefore the maintainability of the equipment is greatly improved. The distance between the module plug-in 400 and the electronic sensor 130 is very close, and the distortion of the acquired analog signals is small; the distance between the module plug-in 400 and the secondary distribution switch monitoring terminal 200 is far, digital communication is adopted, only a small cable is needed for communication, the material cost of cables and the like is greatly saved, and the overall delivery speed of products is improved. In practical application, there are two installation methods: firstly, the module accommodating bin 500 is integrated with the primary switch control cabinet 100, and the mode is suitable for new projects; secondly, the module storage bin 500 and the primary switch control cabinet 100 are made into a split type, and the mode is suitable for the transformation of the original equipment.

Referring to fig. 2-5, the power grid primary-secondary fusion analog-to-digital conversion system of the embodiment of the invention is used in a system of electronic sensors 130 already adopted in a primary switch control device 110, and an analog-to-digital conversion circuit 413 is separated from a secondary distribution switch monitoring terminal 200(FTU) and made into a live detachable module, and includes a module plug-in 400 and a module storage bin 500, the module plug-in 400 includes a module 410 and a locking structure 420, the module 410 includes a module housing 411, a module connector 412 disposed at an opening at an upper end of the module housing 411, and an analog-to-digital conversion circuit 413 disposed in the module 410 and electrically connected with the module connector 412, wherein the module connector 412 and the storage bin connector 5122 are pluggable, a signal input connector 516 and a signal output connector 517 are connected to the storage bin connector 5122, the analog-to-digital conversion circuit 413 is used for receiving an analog signal from the electronic sensors 130 through the signal input connector 516, the digital signal is converted into a digital signal and then transmitted to the secondary power distribution switch monitoring terminal 200 through a signal output connector 517, the module accommodating bin 500 comprises a module accommodating bin body 510 and a locking platform 520, the module accommodating bin body 510 comprises an accommodating bin shell 511, an accommodating bin connector module 512, an accommodating part 513 and a first opening 514 communicated with the accommodating part 513, the module accommodating bin 500 is vertically arranged, the first opening 514 faces downwards, the module plug-in 400 is slightly smaller than the first opening 514 in cross section and can be rectangular, square, circular and the like, the module plug-in 400 can be inserted into the accommodating part 513 from the first opening 514 or moved out of the accommodating part 513, the locking structure 420 is arranged in the module 410 and can be fixed on one side of the module shell 411 through screws, one side of the module shell 411 is provided with a first through hole 4111, a locking pin head inclined surface 42311 faces upwards, a locking pin head 4231 can extend out of or retract from the first through hole 4111, the bottom of the module shell 411 is provided with a second through hole 4112 for loading and unloading, the locking platform 520 is arranged on one side in the module accommodating bin body 510, one end, close to the first opening 514 of the module accommodating bin body 510, of the locking platform 520 is a locking platform inclined surface 521, the other end of the locking platform is a locking platform plane 522, and when the module plug-in unit 400 is inserted into the accommodating portion 513, the locking structure 420 is matched with the locking platform 520 so as to lock the module plug-in unit 400 in the module accommodating bin 500, and the installation and the disassembly are convenient. The storage bin connector module 512 is disposed on the storage bin housing top plate 5111, and includes a storage bin connector module housing 5121 provided with a second opening 51211 facing downward and a storage bin connector 5122 disposed at the second opening 51211. The second opening 51211 of the housing of the storage compartment connector module is provided with an inner guiding angle 51212 for cooperating with the module guiding head 4114 when the module connector 412 is inserted, and the storage compartment connector 5122 can be a socket. The module receiving bin 510 is provided with four module mounting rails 515, and the module insert 400 is inserted or pulled out along the module mounting rails 515. The storage compartment case 511 is provided with a signal input connector 516 and a signal output connector 517 that are electrically connected to the storage compartment connector 5122, respectively.

The module connector 412 may be a plug, and module guide header 4116 may be disposed around the plug of the module connector 412 and on the module housing for inserting and positioning with the storage compartment connector module 512. The cross section of the module guide head 4116 may be rectangular, an inward necking module guide head inclined surface 41161 may be arranged at the upper end of the module guide head 4116, when the second opening 51211 of the module storage bin 500 is vertically arranged downward, when the plug of the module connector 412 of the module plug-in unit 400 is inserted upward from the second opening 51211, the module guide head inclined surface 41161 is matched with the inward leading angle 51212 of the storage bin connector module housing 5121, the inward leading angle 51212 is wide downward and narrow upward, and the module connector 412 and the storage bin connector 5122 are conveniently inserted. The module guide header 4116 is provided with a sealing member 4117, and the sealing member 4117 may be a rubber ring or the like.

Referring to fig. 6 to 13, the locking structure of the embodiment of the present invention includes: the module shell 411 is provided with a first fixing hole 4114 and a second fixing hole 4115, and the first mounting lug 4218 and the second mounting lug 4219 can be fixed on the side surface of the module shell 411 through screws and the first fixing hole 4114 and the second fixing hole 4115. A spring limiting structure 4215 is arranged on the support 421 along the extension direction of the spring 422, a first sliding groove 4212 and a second sliding groove 4213 are respectively arranged on two sides of the support 421 along the extension direction of the spring 422, and a protruding stop pin 4214 is arranged on one side of the support 421; the spring 422 is horizontally arranged in the spring limiting structure 4215; the spring position-limiting structure 4215 is composed of a first spring side stop piece 42151, a second spring side stop piece 42152 and a spring top stop piece 42153, wherein the first spring side stop piece and the second spring side stop piece are arranged on two sides of the support upper spring 422, and the spring 422 is limited in the spring top stop piece 42153. The bracket 421 has a first slot 4216 and a second slot 4217 on both sides of the rear end, and when the lock pin 423 is assembled, the first side blocking piece 42151 and the second side blocking piece 42152 of the spring can be inserted into the first slot 4216 and the second slot 4217, respectively, so that the first lock pin wingspan 42322 and the second lock pin wingspan 42323 can be conveniently placed into the first sliding slot 4212 and the second sliding slot 4213, respectively. An inner spring support 42325 is arranged on the first rear end surface 42321 of the lock pin and used for fixing one end of the spring 422, and one end of the spring 422 is sleeved on the inner spring support 42325; the lock pin 423 comprises a lock pin head 4231, a lock pin main body 4232 and a shifting shaft 4233, the lock pin main body 4232 is provided with a lock pin first rear end surface 42321 in the middle of the opposite side of the lock pin head 4231, one end of a spring 422 is abutted against a spring support table 4211, the other end of the spring 422 is abutted against the lock pin first rear end surface 42321, the lock pin head 4231 is arranged at one end of the lock pin main body 4232, two sides of the lock pin main body 4232 are respectively provided with a first lock pin wingspan 42322 and a second lock pin wingspan 42323, the first lock pin wingspan 42322 and the second lock pin wingspan 42323 are respectively placed in a first sliding chute 4212 and a second sliding chute 4213 and can move along the first sliding chute 4212 and the second sliding chute 4213, the first sliding chute 4212 and the second sliding chute 4213 are open grooves facing towards the inner side of the support, the upper end of the first sliding chute 42121 and the upper side of the second sliding chute 42122 are respectively provided with a first sliding chute side wall 42131 and a second chute side wall 42132, the lock pin head 4231 can extend out of the first through hole 4111 when the spring is in a free state, the lock pin head 42311 inclines upwards, the other end is a lock pin head plane 42312, the inclined surface of the lock pin head 4231 is a chamfer angle or an arc or an inclined surface, a shifting shaft 4233 is arranged on one side of the axis of the lock pin main body 4232 and protrudes downwards, the lock pin main body 4232 is provided with a lock pin second rear end surface 42324 deviating from the central axis on the opposite side of the lock pin head 4231, a stop pin 4214 is arranged opposite to the lock pin second rear end 42324 surface, the stop pin 4214 is used for preventing the lock pin head 4231 from being excessively retracted into the first through hole 4111, when the lock pin second rear end surface 42324 touches the stop pin 4214, the lock pin head 4231 is retracted into the first through hole 4111, and the stop pin 4214 is used for ensuring that the lock pin head 4231 is retracted into the first through hole 4111, but not retracted too much; the assembling and disassembling nut 424 is arranged below the lock pin 423, threads are arranged on the inner side of the assembling and disassembling nut 424, one end of the threads of the assembling and disassembling nut 424 faces the second through hole 4112, the other end of the threads of the assembling and disassembling nut 424 is provided with a first toggle surface 4241 and a second toggle surface 4242 which are arranged in a radial direction, opposite and vertical direction of the assembling and disassembling nut 424, the first toggle surface 4241 is close to one side of the spring support table 4241, the second toggle surface 4242 is close to one side of the lock pin head 4231, the toggle shaft 4233 is arranged between the first toggle surface 4241 and the second toggle surface 4242, and the first toggle surface 4241 and the second toggle surface 4242 are side end surfaces opposite to two fan-shaped blocks arranged at one end of the assembling and disassembling nut 424; a fixing pressing block 425, one end of the fixing pressing block is fixed on the module bottom plate, the other end of the fixing pressing block is buckled on the assembling and disassembling nut, the assembling and disassembling nut is arranged between the fixing pressing block and the module bottom plate and can rotate freely, the section of the assembling and disassembling nut 424 is in a convex shape, and the fixing pressing block 425 is buckled on a step in the convex shape; referring to fig. 14, the detachable rod 426 has a detachable screw 4261 at one end and an operating rod 4262 at the other end, and has a screw thread on the outer side of the detachable screw 4261, and the detachable screw 4261 can be screwed into the detachable nut 424.

Referring to fig. 15 to 16, in another embodiment, the signal input connector 516 and the signal output connector 517 are replaced by direct wires, and the housing 511 of the storage compartment is provided with a wire hole 518, through which the input and output wires pass, one end of the input and output wires is connected to the storage compartment connector module 512, and the other end is connected to the electronic sensor 130 and the secondary distribution switch monitoring device 210 respectively.

The process of unloading the power grid primary and secondary fusion analog-to-digital conversion system module plug-in 400 from the module storage bin 500 is as follows:

1. screwing a screw 4261 for mounting and dismounting at the end of the mounting and dismounting rod 426 into the nut 424 for mounting and dismounting (for example, right-handed);

note: when the assembling and disassembling rod 426 is screwed into the assembling and disassembling nut 424, the assembling and disassembling rod 426 drives the assembling and disassembling nut 424 to rotate (friction action), the second toggle surface 4242 acts on the toggle shaft 4233 to drive the lock pin 423 to integrally move (the lock pin head 4231 retracts into the module shell 411), and the lock pin 423 compresses the spring 422 when moving; when the second rear end 42324 of the lock pin hits the stop pin 4214, the lock pin 423 stops moving, the loading and unloading rod 426 continues to be screwed into place, and the lock pin head 4231 is retracted in the module shell 411; after the loading and unloading rod 426 is screwed in place, the locking pin 423 is driven to extend out of the module shell 411 again under the action of the resilience force of the spring 422;

2. lifting the loading and unloading bar 426 and the module insert 400 in alignment with the first opening 514 of the module storage bin bottom 500 (with the direction of the locking pin head 4231 towards the locking station 520 if desired); the locking pins 423 will lock onto the locking table 520 after the module insert 400 is pushed into place.

During the process of pushing the module insert 400, when the locking pin head 4231 is engaged with the locking platform inclined surface 521, the locking platform inclined surface 521 presses the locking pin head 4231 to retreat, then compresses the spring 422, and when the module insert is pushed into the locking platform 520, the locking pin 423 is ejected out of the module shell 411 under the resilience force of the spring 422, and at this time, the module insert can be reliably locked.

When the mounting/dismounting rod 426 is to be removed, the mounting/dismounting rod 426 is firstly screwed out of the mounting/dismounting nut 424 (the direction is opposite to the screwing direction), at this time, the mounting/dismounting nut 424 is driven to rotate, when the first toggle surface 4241 is abutted against the toggle shaft 4233, the mounting/dismounting nut 424 is not rotated any more, and the mounting/dismounting nut 424 can be normally screwed out; the lock pin 423 is in a completely extended state (a lock-secured state) during the process of unscrewing the mounting nut 424, and the mounting rod 426 is removed when the mounting rod 426 is completely unscrewed;

3. when the module card 400 is taken out from the module storage bin 500, the assembling and disassembling rod 426 is aligned with the assembling and disassembling nut 424 at the bottom of the module card 400, the assembling and disassembling nut 424 is driven to rotate by screwing the assembling and disassembling rod 426, the assembling and disassembling nut 424 is driven to rotate, the pulling shaft 4233 is driven to move by the second pulling surface 4242 of the assembling and disassembling nut 424, when the second rear end surface 42324 of the locking pin contacts with the stopping pin 4214, the locking pin head 4231 is retracted into the module shell 411, and the assembling and disassembling rod 426 is pulled downwards to complete unlocking.

The technical solution of the present invention is explained in detail by the specific embodiments above. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same. The technical solutions described in the above embodiments can be modified or part of the technical features can be equivalently replaced by those skilled in the art; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A locking structure is applied to a primary and secondary fusion analog-to-digital conversion system of a power grid, and is characterized in that the primary and secondary fusion analog-to-digital conversion system of the power grid comprises a module plug-in unit and a module accommodating bin, the module plug-in unit comprises a module and a locking structure, the module comprises a module shell, a module connector arranged at an opening at the upper end of the module shell, and an analog-to-digital conversion circuit arranged in the module and electrically connected with the module connector, the module accommodating bin comprises a module accommodating bin body and a locking platform, the module accommodating bin body comprises an accommodating bin shell, an accommodating bin connector module, an accommodating part and a first opening communicated with the accommodating part, the module accommodating bin is vertically arranged, the first opening faces downwards, the module plug-in unit can be inserted into the accommodating part from the first opening or can be removed from the accommodating part, and the locking structure is arranged in the module, module shell one side is equipped with first through-hole, module shell bottom is equipped with the second through-hole for loading and unloading, the internal one side in module collecting storage storehouse is located to the locking platform, the locking platform is close to the first opening one end in the module collecting storage storehouse body and is the locking platform inclined plane, and the other end is the locking platform plane, works as when module plug-in components insert in the portion of acceping, the locking structure with the cooperation of locking platform, in order to incite somebody to action module plug-in components locking is in the module collecting storage storehouse, the locking structure includes:

the spring is horizontally arranged in the spring limiting structure;

2. The lock structure of claim 1, wherein the inclined surface of the locking pin head is a chamfer or a circular arc or a slope.

3. The locking structure of claim 1, wherein the spring limiting structure is composed of a first spring side stop piece, a second spring side stop piece and a spring top stop piece, the first spring side stop piece and the second spring side stop piece are arranged on two sides of the spring on the support, and the spring top stop piece is arranged on the upper end of the spring on the support.

4. The locking structure of claim 3, wherein a first slot and a second slot are formed on two sides of the rear end of the bracket, and when the lock pin is assembled, the first side blocking piece and the second side blocking piece of the spring can be inserted into the first slot and the second slot respectively, so that the first lock pin wingspan and the second lock pin wingspan can be conveniently placed in the first sliding groove and the second sliding groove respectively.

5. The lock structure of claim 1, wherein an inner spring support is disposed on the first rear end surface of the lock pin, and one end of the spring is sleeved on the inner spring support.

6. The lock structure according to claim 1, wherein the first and second dial surfaces are side end surfaces of two segments provided at one end of the mounting/dismounting nut, the two segments being opposed to each other.

7. The locking structure of claim 1, wherein the first sliding groove and the second sliding groove are open grooves facing the inside of the bracket, the upper end of the first sliding groove is provided with a first sliding groove upper side, the upper end of the second sliding groove is provided with a second sliding groove upper side, and the side surfaces of the first sliding groove and the second sliding groove are provided with a first sliding groove side wall and a second sliding groove side wall.

8. The locking structure of claim 1, wherein the bracket has a first mounting lug and a second mounting lug on two sides of an end surface of the bracket near the locking pin head, and the module housing has a first fixing hole and a second fixing hole, and the first mounting lug and the second mounting lug can be fixed on the side surface of the module housing by screws and the first fixing hole and the second fixing hole.

9. The lock structure of claim 1, wherein the nut for mounting and dismounting has a cross section of a shape of a "convex", the fixed pressing block is fastened on a step of the shape of the "convex", and the nut for mounting and dismounting can rotate freely.

10. The utility model provides a module plug-in components of electric power net once and twice amalgamation analog-to-digital conversion system which characterized in that, electric power net once and twice amalgamation analog-to-digital conversion system still includes module collecting storage, module plug-in components include:

a module detachably insertable into the module receiving compartment, an

The locking structure of any one of claims 1 to 9, said locking structure being disposed within said module.

11. The modular plug-in unit for a power grid primary-secondary fusion analog-to-digital conversion system as claimed in claim 10, wherein the modular connector is a plug, and module guide heads are arranged around the plug of the modular connector and on the module housing for being inserted and positioned with the storage bin connector module.

12. The modular plug-in unit for a power grid primary-secondary fusion analog-to-digital conversion system of claim 11, wherein the cross section of the module guide head is rectangular, and the upper end of the module guide head is an inward-closing module guide head inclined surface.

13. A modular plug-in unit for a power grid primary and secondary fusion analog-to-digital conversion system as claimed in claim 11, wherein a sealing member is provided around the module guide head.

14. A power grid primary and secondary fusion analog-to-digital conversion system is characterized by comprising:

the power grid one-shot-two fusion analog-to-digital conversion system module package of claim 10.

15. The power grid primary-secondary fusion analog-to-digital conversion system of claim 14, wherein the storage bin connector module is disposed on a top plate of a storage bin housing and comprises a storage bin connector module housing with a second opening facing downward and a storage bin connector disposed at the second opening.

16. The power grid primary and secondary fusion analog-to-digital conversion system of claim 15, wherein the second opening of the housing of the storage bin connector module is provided with an inner guiding angle for being matched and positioned with the module guiding head when being plugged with the module connector, and the storage bin connector is a socket.

17. The power grid primary-secondary fusion analog-to-digital conversion system according to claim 14, wherein the module storage bin body is provided with four module mounting rails, and the module plug-in unit is plugged in or pulled out along the module mounting rails.

18. The power grid primary-secondary fusion analog-to-digital conversion system of claim 14, wherein the storage bin housing is provided with a signal input connector and a signal output connector which are electrically connected with the storage bin connector respectively.

19. The power grid primary-secondary fusion analog-to-digital conversion system as claimed in claim 14, wherein the housing of the storage bin is provided with a wire through hole, and the connection wire of the connector of the storage bin passes through the wire through hole.