CN211086521U - Use multi-functional joint that leads to on electrical equipment - Google Patents
Use multi-functional joint that leads to on electrical equipment Download PDFInfo
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Abstract
The utility model provides a multifunctional multi-way joint applied to electrical equipment, which comprises a multi-way joint body, an electric control valve, a connector, an equipment air duct, a pressure adjusting mechanism air duct and a plurality of sensor instrument air ducts, wherein the pressure adjusting mechanism air duct and the sensor instrument air ducts are mutually communicated; the multifunctional multi-way joint is communicated with the electrical equipment through an equipment air duct; the pressure regulating mechanism or the calibrator is communicated with the multifunctional multi-way joint through a pressure regulating mechanism air passage; the sensor instrument air ducts are provided with interfaces; the electrically controlled valve is configured to close or open the facility airway after receiving a command to close or open the facility airway. The multifunctional multi-way connector completes the check work of the gas density relay, and the check work of the gas density relay can be completed without the need of a maintainer going to the site, so that the reliability of a power grid is greatly improved, the efficiency is greatly improved, and the cost is reduced.
Description
Technical Field
The utility model relates to an electric power tech field especially relates to an use multi-functional joint that leads to more on high-voltage electrical equipment.
Background
The gas density relay is used for monitoring and controlling the density of insulating gas in high-voltage and medium-voltage electrical equipment, a contact signal control loop is arranged in the gas density relay, a gas path of the gas density relay is communicated with a gas chamber of the high-voltage and medium-voltage electrical equipment, when gas leakage is detected, a contact of the gas density relay acts to generate a contact signal, and the contact signal control loop gives an alarm or locks according to the contact signal, so that the safe operation protection of the electrical equipment is realized.
At present, SF6 (sulfur hexafluoride) electrical equipment is widely applied to electric power departments and industrial and mining enterprises, and rapid development of the electric power industry is promoted. In recent years, with the rapid development of economy, the capacity of a power system in China is rapidly expanded, and the usage amount of SF6 electrical equipment is more and more. The SF6 gas plays a role in arc extinction and insulation in high-voltage electrical equipment, and the safe operation of the SF6 high-voltage electrical equipment is seriously influenced if the density of the SF6 gas in the high-voltage electrical equipment is reduced and the micro water content is exceeded: 1) the reduction of SF6 gas density to some extent will result in loss of insulation and arc extinguishing properties. 2) Under the participation of some metal substances, SF6 gas can generate hydrolysis reaction with water at the high temperature of more than 200 ℃ to generate active HF and SOF2The insulation and metal parts are corroded and generate a large amount of heat, so that the pressure of the gas chamber is increased. 3) When the temperature is reduced, excessive moisture can form condensed water, so that the surface insulation strength of the insulation part is obviously reduced, and even the insulation part flashesCollateral obstruction causes serious harm. Grid operating regulations therefore mandate that the density and moisture content of SF6 gas must be periodically checked both before and during operation of the equipment.
With the development of the unattended transformer substation towards networking and digitization and the continuous enhancement of the requirements on remote control and remote measurement, the online monitoring of the gas density and micro-water content state of the SF6 electrical equipment has important practical significance. With the continuous and vigorous development of the intelligent power grid in China, intelligent high-voltage electrical equipment is used as an important component and a key node of an intelligent substation, and plays a significant role in improving the safety of the intelligent power grid. At present, most of high-voltage electrical equipment is SF6 gas insulation equipment, and if the gas density is reduced (caused by leakage and the like), the electrical performance of the equipment is seriously influenced, and serious hidden danger is caused to safe operation. Currently, on-line monitoring of gas density values in SF6 high-voltage electrical equipment is very common, and existing gas density monitoring systems (devices) are basically: 1) The remote transmission type SF6 gas density relay is used for realizing the acquisition and uploading of density, pressure and temperature and realizing the online monitoring of the gas density. 2) The gas density transmitter is used for realizing the acquisition and uploading of density, pressure and temperature and realizing the online monitoring of the gas density. The SF6 gas density relay is the core and key component. However, because the environment for the field operation of the high-voltage transformer substation is severe, particularly the electromagnetic interference is very strong, in the currently used gas density monitoring system (device), the remote transmission type SF6 gas density relay is composed of a mechanical density relay and an electronic remote transmission part; in addition, the traditional mechanical density relay is reserved in a power grid system applying the gas density transmitter. The mechanical density relay is provided with one group, two groups or three groups of mechanical contacts, and when the pressure reaches the state of alarming, locking or overpressure, information is transmitted to a target equipment terminal in time through a contact connecting circuit, so that the safe operation of the equipment is ensured. Meanwhile, the monitoring system is also provided with a safe and reliable circuit transmission function, an effective platform is established for realizing real-time data remote data reading and information monitoring, and information such as pressure, temperature, density and the like can be transmitted to target equipment (such as a computer terminal) in time to realize online monitoring.
The gas density relay on the SF6 electrical equipment is regularly checked, which is a necessary measure for preventing the gas density relay from being in the bud and ensuring the safe and reliable operation of the SF6 electrical equipment; the 'electric power preventive test regulations' and the 'twenty-five key requirements for preventing serious accidents in electric power production' both require that the gas density relay be periodically checked. From the actual operation condition, the periodic verification of the gas density relay is one of the necessary means for ensuring the safe and reliable operation of the power equipment. Therefore, the calibration of the SF6 gas density relay is very important and popular in the power system, and various power supply companies, power plants and large-scale industrial and mining enterprises are implemented. And power supply companies, power plants and large-scale industrial and mining enterprises need to be equipped with testers, equipment vehicles and high-value SF6 gas for completing the field verification and detection work of the gas density relay. Including power failure and business loss during detection, the detection cost of each high-voltage switch station, which is allocated every year, is about tens of thousands to tens of thousands yuan. In addition, if the field check of the detection personnel is not standard in operation, potential safety hazards also exist. Therefore, it is necessary to innovate the existing gas density relay, so that the gas density relay for realizing the online gas density monitoring or the monitoring system formed by the gas density relay also has the checking function of the gas density relay, and further regular checking work of the (mechanical) gas density relay is completed, no maintainer is required to arrive at the site, the efficiency is greatly improved, and the cost is reduced. The realization of the on-line calibration function of the density relay requires a multifunctional multi-pass connector applied to electrical equipment.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multi-functional joint that leads to that high pressure, middling pressure electrical equipment used for solve when monitoring the gas density relay of the electrical equipment of gas insulation or arc extinguishing, still accomplish the online check-up to gas density relay, raise the efficiency, reduce the operation maintenance cost, guarantee electric wire netting safe operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multi-functional multi-way connector for use on an electrical device, comprising: a multi-way joint body and an electric control valve, wherein,
the multi-way joint comprises a multi-way joint body and a plurality of pressure regulating mechanisms, wherein the multi-way joint body comprises a first interface used for connecting electrical equipment, a second interface used for connecting a pressure regulating mechanism (a calibration instrument) and at least one third interface used for connecting a sensor instrument;
the electric control valve is partially or completely embedded in the multi-way joint body, or the electric control valve and the multi-way joint body are designed integrally; the electric control valve is provided with a stop plugging piece which can reciprocate in the direction close to and/or far away from the equipment air passage; and the stopping plugging piece penetrates through the first channel towards the equipment air duct to plug the equipment air duct, and a gap is reserved between the side wall of the stopping plugging piece and the inner wall of the first channel to keep the first channel communicated.
Preferably, the first channel is divided into a pressure regulating mechanism air duct (calibration air duct) connected with the second interface and a sensor instrument air duct connected with the third interface by taking the position of the equipment air duct or the stop plugging piece as a boundary.
Preferably, the multi-way joint body further comprises a fourth interface used for connecting a density relay, a density relay air passage is formed in the multi-way joint body corresponding to the fourth interface, and the density relay air passage is communicated with the equipment air passage, the pressure adjusting mechanism air passage and the sensor instrument air passage.
Preferably, the electric control valve may be one or more selected from a group consisting of an electromagnetic valve, an electric valve, a pressure valve, a temperature control valve, a new valve made of a smart memory material, and a new valve using an electric heating control switch, wherein the driving force for closing or opening the electric control valve includes, but is not limited to, one of a magnetic force, an electric motor, a reciprocating mechanism, a carnot cycle mechanism, and a pneumatic element.
More preferably, the electric control valve is a solenoid valve, and the solenoid valve comprises: the movable iron core, the coil used for controlling the movable iron core to move and the shell are arranged, wherein a channel for the movable iron core to move is further arranged inside the shell, the coil is arranged on the outer side of the channel, and the blocking piece is connected with one end, facing the equipment air duct, of the movable iron core.
Further, the shell penetrates through the first channel, and the side wall of the shell facing the pressure adjusting mechanism air duct (checking air duct) and the sensor instrument air duct is provided with an air outlet which is communicated with the pressure adjusting mechanism air duct (checking air duct) and the sensor instrument air duct; an air inlet communicated with the equipment air duct is formed in the wall, facing the equipment air duct, of the shell, and the stopping plugging piece plugs the air inlet; and a gap is reserved between the side wall of the stop plugging piece and the inner wall of the shell for communicating at least two air outlets.
Furthermore, a gap is reserved between the side wall of the stop plugging piece and the inner wall of the shell for communicating at least three air outlets.
Furthermore, an elastic component is arranged at one end of the channel far away from the cut-off plugging piece.
Still further, the elastic member is a spring.
Furthermore, a cavity is arranged at one end, facing the elastic component, of the movable iron core, and the elastic component extends into the cavity.
More preferably, a sealing ring is arranged on the outer side of the coil to seal the movable iron core and the coil in the shell and seal the movable iron core and the coil with the multi-way joint body.
Further, the lower extreme of sealing washer is equipped with the valve gap, end shutoff piece setting in the lower port of cavity.
Further, the solenoid valve still includes sealed lead-out wire spare, sealed lead-out wire spare is sealed on the casing, the control line and the sealed lead-out wire spare interconnect of coil.
More preferably, the electric control valve is an electric valve, and the electric valve comprises: the device comprises a valve body, driving equipment and a shell, wherein the driving equipment is used for controlling the opening or closing of a stop plugging piece, one end of the valve body, facing an equipment air duct, is connected with the stop plugging piece, and the other end of the valve body is connected with the driving equipment; the driving device drives the valve body and the stop plugging piece to move in a reciprocating mode in the direction close to and/or far away from the air duct of the device in the shell.
Further, the valve body is sealed on the multi-way connector body through a sealing ring.
Further, the driving apparatus includes a driving mechanism and a motor connected to each other.
Furthermore, the stop plugging piece is a sealing piece and is made of rubber or a plastic piece; or a steel ball, and a ball valve is adopted.
Preferably, the multifunctional multi-way joint further comprises an air supplement or/and test port, and the air supplement or/and test port is communicated with the pressure regulating mechanism air duct through an air supplement and/or test air duct, or is communicated with the equipment air duct, or is communicated with the sensor instrument air duct.
Preferably, the multifunctional multi-way joint further comprises a self-sealing valve, and the self-sealing valve is plugged in the air supply or/and test port.
More preferably, the self-sealing valve comprises a valve core, a spring, a sealing ring, a valve seat and a valve body, a sealed cavity is arranged in the valve body, the valve core is positioned in the cavity and used for plugging a gas supplementing or/and testing port, the valve seat is arranged at the front end of the cavity, and an opening is formed in the valve seat and used for communicating the cavity with a gas supplementing and/or testing air passage; the spring is arranged around the valve core, and one end of the spring is abutted against the valve seat; the rear end of the valve core is in sealing contact with the cavity, and a gap is reserved between the valve core body and the cavity.
Furthermore, a driving part inserting opening is formed in the rear end of the cavity and used for inserting a driving part for pushing the valve core to move.
Further, the rear end of the valve core is in sealing contact with the cavity through a sealing ring.
Furthermore, a sealing gasket is arranged at the rear end of the cavity, namely a port at the rear end of the valve body, an O-shaped sealing ring is arranged on the inner side of the port, a protective cap in a shape of a Chinese character 'shan' or a 'hexagonal' is sleeved on the port, and the protective cap is connected with the valve body in a sealing mode through the sealing gasket and the O-shaped sealing ring.
In this application, the front end is the one end that is close to many logical joint bodies, the rear end is the one end of keeping away from many logical joint bodies.
Preferably, the sensor instrument air duct is used for being directly connected with one or more of a micro water sensor, a gas density relay and a pressure sensor or being connected with the micro water sensor, the gas density relay and the pressure sensor through a self-sealing valve.
Preferably, the on-off of the electric control valve is controlled by a command, and the opening and closing of the equipment air duct are controlled by the electric control valve.
Preferably, the first interface further comprises an open valve, or further comprises an equipment side self-sealing valve, or further comprises an equipment side valve.
Preferably, the sensor meter air duct is connected with the micro water sensor, and the air duct of the electrical equipment and the air in the sensor meter air duct flow together through the adjustment of the pressure adjusting mechanism, so as to detect the micro water content of the air in the electrical equipment.
Preferably, the multi-way connector is connected with a gas density relay, a pressure sensor, a temperature sensor, a pressure adjusting mechanism, an online check contact signal sampling unit and an intelligent control unit, wherein,
the equipment air duct of the multi-way joint is communicated with electrical equipment;
the gas density relay and the pressure sensor are communicated with a sensor instrument air passage of the multi-way joint;
the pressure regulating mechanism is communicated with a pressure regulating mechanism air duct (checking air duct) of the multi-way joint;
the pressure sensor is communicated with the gas density relay on the gas path;
and the online check contact signal sampling unit is respectively connected with the gas density relay and the intelligent control unit.
More preferably, the multi-way joint is connected with a gas density relay, a pressure sensor, a temperature sensor, a pressure adjusting mechanism, an online check contact signal sampling unit and an intelligent control unit, measures a contact value (a pressure value during alarm/locking action) and/or a rated pressure value of the gas density relay under the working environment temperature, automatically converts the contact value into a corresponding pressure value at 20 ℃, and performs performance detection on the contact (alarm and locking) value and/or the rated pressure value of the gas density relay on line; and the pressure value, the temperature value and/or the gas density value of the electrical equipment are monitored on line, so that the gas density of the electrical equipment is monitored on line.
More preferably, the pressure adjusting mechanism is a closed air chamber, a heating and/or cooling element is arranged outside or inside the closed air chamber, and the temperature of the gas in the air chamber is changed by heating the heating element and/or cooling the gas by the cooling element, so as to complete the lifting of the gas pressure.
Further, the heating element, and/or the cooling element is a semiconductor.
Further, the pressure regulating mechanism is also provided with a heat preservation piece, and the heat preservation piece is arranged outside the closed air chamber.
More preferably, the pressure adjusting mechanism is a closed air chamber, a heating element and/or a refrigerating element is arranged outside or inside the closed air chamber, and the temperature of the gas in the closed air chamber is changed by heating the heating element and/or refrigerating through the refrigerating element, so that the pressure of the gas density relay is increased or decreased; or,
the pressure adjusting mechanism is a cavity with an opening at one end, and the other end of the cavity is communicated with the multi-way joint; a piston is arranged in the cavity, one end of the piston is connected with an adjusting rod, the outer end of the adjusting rod is connected with a driving part, the other end of the piston extends into the opening and is in sealing contact with the inner wall of the cavity, and the driving part drives the adjusting rod to further drive the piston to move in the cavity; or,
the pressure adjusting mechanism is a closed air chamber, a piston is arranged in the closed air chamber and is in sealed contact with the inner wall of the closed air chamber, a driving part is arranged outside the closed air chamber, and the driving part pushes the piston to move in the cavity through electromagnetic force; or,
the pressure adjusting mechanism is an air bag with one end connected with a driving part, the air bag generates volume change under the driving of the driving part, and the air bag is communicated with the multi-way joint; or,
the pressure adjusting mechanism is a corrugated pipe, one end of the corrugated pipe is communicated with the multi-way joint, and the other end of the corrugated pipe stretches under the driving of the driving part; or,
the pressure adjusting mechanism is a deflation valve which is an electromagnetic valve or an electric valve or other deflation valves realized in an electric or gas mode; or,
the pressure regulating mechanism is a compressor; or,
the pressure regulating mechanism is a pump, and the pump comprises but is not limited to one of a pressure generating pump, a booster pump, an electric air pump and an electromagnetic air pump;
wherein the driving component includes, but is not limited to, one of a magnetic force, a motor, a reciprocating mechanism, a carnot cycle mechanism, and a pneumatic element.
More preferably, the pressure regulating mechanism is sealed within or in front of a chamber or housing.
More preferably, the electrically controlled valve and the pressure regulating mechanism are sealed within a chamber or housing.
More preferably, the air duct of the equipment is in a closed state, the pressure regulating mechanism increases or decreases the load when the pressure is increased or decreased, the load change speed is not more than 10 per second of the measuring range of the density relay, and the pressure can be regulated (can be smoothly increased or decreased).
More preferably, the pressure adjusting mechanism comprises a capillary tube with a set length, a sealed chamber and a heating element, and the gas flow is realized by heating the heating element; the capillary tube is provided between the seal chamber and a pressure adjustment mechanism vent (check vent).
Compared with the prior art, the technical scheme of the utility model following beneficial effect has:
the utility model provides an use multi-functional multi-channel joint at high pressure, middling pressure electrical equipment, including multi-channel joint body, automatically controlled valve, interface, equipment air passage and inside contain pressure regulating mechanism air passage (check-up air passage), a plurality of sensor instrument air passage of mutual intercommunication. The electrically controlled valve is configured to close or open the facility airway after receiving a command to close or open the facility airway. The utility model discloses a multi-functional joint that leads to for the gas circuit of the gas density relay on the intercommunication high-tension electrical equipment has brought the convenience for the check-up of gas density relay, and sealed effectual, reliable, safety and convenience during the check-up.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is a schematic structural view of a multi-functional multi-way joint according to a first embodiment;
FIG. 2 is an outline view of a multi-function multi-way connector according to the first embodiment;
FIG. 3 is a schematic structural diagram of a multifunctional multi-way connector in a checking state when connected to a gas density relay according to the first embodiment;
FIG. 4 is a schematic structural view of a multi-functional multi-way joint according to the second embodiment;
fig. 5 is a schematic structural view of a multi-functional multi-way joint of the third embodiment.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example one
Fig. 1 is a schematic structural view of a multi-functional multi-way joint according to a first embodiment, and fig. 2 is an external view of the multi-functional multi-way joint according to the first embodiment.
1-2, a multi-function, multi-way connector, comprising: the multi-way joint comprises a multi-way joint body 1 and a plurality of pieces of equipment, wherein the multi-way joint body 1 comprises a first interface 11 used for connecting electrical equipment, a second interface 15 used for connecting a pressure adjusting mechanism (a calibration instrument) and at least one third interface 16 used for connecting a sensor instrument, a first channel and an equipment air duct 101 are arranged inside the multi-way joint body 1, the first channel is communicated with the second interface and the third interface, and the equipment air duct 101 is communicated with the first interface and the first channel;
the electric control valve 4 is partially or completely embedded in the multi-way joint body 1, or the electric control valve 4 and the multi-way joint body 1 are integrally designed; a stop plugging piece 4031 which can reciprocate in the direction close to and/or far away from the equipment air duct 101 is arranged on the electric control valve 4; the device air duct 101 is blocked after the blocking and blocking piece 4031 passes through the first channel towards the device air duct 101, and a gap is reserved between the side wall of the blocking and blocking piece 4031 and the inner wall of the first channel for the first channel to keep communication.
In a preferred embodiment, the first channel, which is defined by the location of the equipment vent 101 or the shutoff block 4031, is divided into a pressure regulating mechanism vent (calibration vent) 105 connected to the second port and a sensor meter vent 106 connected to the third port.
The multi-way joint body 1 further comprises a fourth interface 12 used for connecting a density relay, a density relay air passage is formed in the multi-way joint body 1 corresponding to the fourth interface 12, and the density relay air passage is communicated with the equipment air passage 101, the pressure adjusting mechanism air passage 105 and the sensor instrument air passages 102 and 106.
The electric control valve 4 adopts an electromagnetic valve, and the electromagnetic valve comprises: the air conditioner comprises a movable iron core 403, a coil 401 for controlling the movable iron core to move, and a housing 407, wherein a channel for moving the movable iron core 403 is further arranged inside the housing 407, the coil 401 is arranged outside the chamber, and the stop block 4031 is connected with one end of the movable iron core 403 facing the equipment air duct 101.
The housing 407 passes through the first passage, and the side walls of the housing 407 facing the pressure adjustment mechanism air duct (verification air duct) 105 and the sensor meter air ducts 102 and 106 are provided with air outlets which are communicated with the pressure adjustment mechanism air duct (verification air duct) 105 and the sensor meter air ducts 102 and 106; an air inlet communicated with the equipment air duct 101 is arranged on the wall of the housing 407 facing the equipment air duct 101, and the blocking and blocking piece blocks 4031 from the air inlet; and a gap is reserved between the side wall of the cut-off plugging piece 4031 and the inner wall of the shell for communicating the two air outlets.
In a preferred embodiment, the end of the chamber remote from the shut-off block 4031 is provided with an elastic member. In a more preferred embodiment, the resilient member is a spring 402. In a more preferred embodiment, a cavity is provided at one end of the plunger 403 facing the elastic member, and the elastic member extends into the cavity.
A sealing ring is arranged on the outer side of the coil 401 to seal the movable iron core 403 and the coil 401 in the shell 407 and seal the multi-way joint body 1.
The lower end of the sealing ring 404 is provided with a valve cover 405, and the stop plug 4031 is arranged at the lower port of the cavity.
The solenoid valve further comprises a sealing outlet member, the sealing outlet member is sealed on the housing 407, and the control line of the coil 401 is connected to the sealing outlet member.
The multifunctional multi-way joint 1 further comprises an air supplement or/and test port 13, and the air supplement or/and test port 13 is communicated with the pressure regulating mechanism air duct 105 through an air supplement and/or test air duct 103, or communicated with the equipment air duct 101, or communicated with the sensor instrument air ducts 102 and 106.
The multifunctional multi-way joint further comprises a self-sealing valve 3, and the self-sealing valve 3 is sealed at the air supply or/and test port 13.
The self-sealing valve 3 comprises a valve core 301, a spring 302, a sealing ring 303, a valve seat 304 and a valve body 305, wherein a sealed cavity is arranged inside the valve body 305, the valve core 301 is positioned in the cavity and used for sealing the air supply or/and test port 13, the valve seat 304 is arranged at the front end of the cavity, an opening is formed in the valve seat 304 and used for communicating the cavity with the air supply and/or test air passage 103, the spring 302 is arranged around the valve core 301, and one end of the spring 302 abuts against the valve seat 304; the rear end of the valve core 301 is in sealing contact with the cavity, and a gap is reserved between the valve core 301 body and the cavity.
In a preferred embodiment, the rear end of the chamber is provided with a driver socket for inserting a driver for pushing the movement of the spool 301.
In a preferred embodiment, the rear end of the spool 301 is in sealing contact with the chamber by a sealing ring 301.
In a preferred embodiment, a sealing gasket 306 is arranged at the rear end of the chamber, namely the port at the rear end of the valve body 305, an O-ring 308 is arranged on the inner side of the port, a protective cap 307 shaped like a Chinese character 'shan' is sleeved at the port, and the protective cap 307 is connected with the valve body 305 in a sealing mode through the sealing gasket 306 and the O-ring 308.
In this application, the front end is the one end that is close to many logical joint bodies, the rear end is the one end of keeping away from many logical joint bodies.
The sensor meter air ducts 102 and 106 are used for being directly connected with one or more of a micro water sensor, a gas density relay and a pressure sensor or being connected with the self-sealing valve 3. The on-off of the electric control valve 4 is controlled by instructions, and the opening and closing of the equipment air duct 101 are controlled by the electric control valve 4. The sensor meter air ducts 102 and 106 are connected with the micro-water sensor, and the air duct of the electrical equipment and the air in the sensor meter air duct flow together through the adjustment of the pressure adjusting mechanism, so that the micro-water content of the air in the electrical equipment is detected.
Fig. 3 is a schematic structural diagram of a multi-function multi-way connector applied to an electrical device in a verification state. As shown in fig. 1-3, the multi-functional multi-way connector 1 is connected with an electrical device 8 through an interface 11, the multi-functional multi-way connector 1 is connected with a corresponding gas density relay 9, a pressure sensor 2, a temperature sensor 10, a pressure adjusting mechanism 5, an online check contact signal sampling unit 6 and an intelligent control unit 7, wherein an equipment air duct 101 of the multi-functional multi-way connector 1 is communicated with the electrical device, and the gas density relay 9 and the pressure sensor 2 are communicated with sensor instrument air ducts 102 and 106 of the multi-way connector; the pressure adjusting mechanism 5 is communicated with a pressure adjusting mechanism air passage (checking air passage) 105 of the multifunctional multi-way joint; the pressure sensor 2 is also communicated with the gas density relay on the gas path; and the online check contact signal sampling unit 6 is respectively connected with the gas density relay 9 and the intelligent control unit 7. The intelligent control unit 7 controls and closes the electric control valve 4 of the multifunctional multi-way joint, so that the gas density relay 9 is isolated from the electrical equipment 8 on the gas path; the gas pressure is adjusted to rise through the pressure adjusting mechanism 5, so that the density relay generates contact signal action, the contact signal action is transmitted to the intelligent control unit 7 through the online check contact signal sampling unit 6, the intelligent control unit 7 detects the contact signal (alarm or locking contact) action value and/or return value of the gas density relay according to the density value when the contact signal action, and the check work of the gas density relay is completed online.
The working principle of the embodiment is as follows: when the gas density relay 9 needs to be checked, the electric control valve 4 of the multifunctional multi-way connector is closed, so that the gas density relay 9 is separated from the electrical equipment 8 on a gas path, and then the gas density relay 9 is adjusted to a checking state. The driving part 52 pushes the piston 51 to move in the cavity under the control of a control mechanism, so that the volume of the sealed cavity formed by the piston 51, the gas density relay 9, the electric control valve 4 and the like is changed, the pressure of the gas is changed, the gas density relay 9 generates an alarm and/or locking contact signal action, the contact signal action is sampled and then transmitted to a processing unit, and the processing unit detects the alarm and/or locking contact action value and/or return value of the gas density relay 9 according to the gas density value when the contact signal (alarm and/or locking) acts, thereby completing the checking work of the gas density relay 9.
In the closed state of the electrically controlled valve 4, the pressure adjusting mechanism 5 can slowly increase the load when increasing the pressure or slowly decrease the load when decreasing the pressure. The load change speed is not more than 10 per second of the measuring range of the gas density relay 9, namely the pressure of the pressure adjusting mechanism 5 can be adjusted (steadily increased or decreased).
Example two
Fig. 4 is a schematic structural view of a multifunctional multi-way connector according to a second embodiment, different from the first embodiment, in the second embodiment, the electric control valve 4 is an electric valve, and the electric valve 4 includes: shutoff plugs 4011 and 4012, valve body 402, drive mechanism 404, motor 405, and housing 406; the valve body 402 has one end connected to the shutoff block 4012 and the other end connected to the drive mechanism 404. The valve body 402 is sealed with the multifunctional multi-way joint body through a sealing ring 403, and the valve body 402 is controlled through a motor 405 and a driving mechanism 404, so that the stop plugging piece 4012 is controlled to be closed or opened.
The electric valve is partially or completely embedded in the multi-way joint body, or the electric valve and the multi-way joint body are designed integrally; the electric valve 4 is provided with a stop plugging member 4031 capable of reciprocating in a direction close to and/or far from the equipment air duct 101.
The multi-way joint body further comprises a fourth interface 12 used for being connected with a density relay, a density relay air channel is formed in the multi-way joint body 1 corresponding to the fourth interface 12, and the density relay air channel is communicated with the equipment air channel 101 and the sensor instrument air channel 102.
The multifunctional multi-way joint further comprises an air supplement or/and test port 13, and the air supplement or/and test port 13 is communicated with the pressure regulating mechanism air duct 105 through an air supplement and/or test air duct 103, or is communicated with the equipment air duct 101, or is communicated with the sensor instrument air duct 102.
The stop block 4011 is a sealing member (made of rubber or plastic). The blocking piece 4012 can be a steel ball, and the blocking piece 4012 is blocked after rotating 90 degrees. Ball valves are generally used.
EXAMPLE III
Fig. 5 is a schematic structural diagram of a multifunctional multi-way connector according to a third embodiment, different from the first embodiment, in the third embodiment, a blocking member of the electronic control valve is composed of a blocking rod 4031 and a plurality of seal rings 4032, wherein the blocking rod 4031 is controlled by a movable iron core 403; and a plurality of sealing rings 4032 are arranged on the sealing groove of the multi-way joint body 1. When the stopping plugging rod 4031 and the plurality of sealing rings 4032 are well contacted with each other under the control of the movable iron core 403, the air path is closed; and when the stopping and blocking rod 4031 and the plurality of sealing rings 4032 are not contacted with each other, the air channel is opened.
To sum up, the utility model provides an use multi-functional multi-channel joint on electrical equipment, connect body 1 and connect the automatically controlled valve 4 on the body that connects that lead to more including leading to, the inside that connects body 1 that leads to more is equipped with interface 11, 12, 13, 15, and equipment air vent 101 and inside contain the pressure adjustment mechanism air vent (check-up air vent) 105, a plurality of sensor instrument air vent 106 of mutual intercommunication. The utility model discloses a multi-functional joint that leads to for the gas circuit of the gas density relay on intercommunication high pressure, the middling pressure electrical equipment has brought the convenience for the check-up of gas density relay, and sealed effectual, reliable, safety and convenience during the check-up.
The above detailed description of the embodiments of the present invention is only for exemplary purposes, and the present invention is not limited to the above described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (10)
1. The utility model provides an use multi-functional many joints on electrical equipment which characterized in that includes: a multi-way connector body and an electric control valve; wherein,
the multi-way joint comprises a multi-way joint body and a plurality of pressure regulating mechanisms, wherein the multi-way joint body comprises a first interface used for connecting electrical equipment, a second interface used for connecting the pressure regulating mechanisms and at least one third interface used for connecting sensor instruments;
the electric control valve is partially or completely embedded in the multi-way joint body, or the electric control valve and the multi-way joint body are designed integrally; the electric control valve is provided with a stop plugging piece which can reciprocate in the direction close to and/or far away from the equipment air passage; and the stopping plugging piece penetrates through the first channel towards the equipment air duct to plug the equipment air duct, and a gap is reserved between the side wall of the stopping plugging piece and the inner wall of the first channel to keep the first channel communicated.
2. The multi-functional multi-way joint of claim 1, wherein the first channel is divided into a pressure adjustment mechanism vent connected to the second port and a sensor meter vent connected to the third port, bounded by a location of the equipment vent or the blocking block.
3. The multi-functional multi-way joint of claim 2, wherein the multi-way joint body further comprises a fourth interface for connecting a density relay, a density relay air passage is opened in the multi-way joint body corresponding to the fourth interface, and the density relay air passage is communicated with the device air passage, the pressure adjustment mechanism air passage and the sensor meter air passage.
4. The multi-functional multi-way connector according to claim 1, wherein the electrically controlled valve is selected from one or more of a solenoid valve, an electrically operated valve, a pressure valve, a temperature control valve, a new valve made of smart memory material or a new valve with an electrically heated control switch; wherein, the driving force for closing or opening the electric control valve comprises one of magnetic force, a motor, a reciprocating mechanism, a Carnot cycle mechanism and a pneumatic element.
5. The multi-functional multi-way joint of claim 2, wherein the electrically controlled valve is a solenoid valve, the solenoid valve comprising: the moving iron core, a coil for controlling the moving of the moving iron core and a shell; the coil is arranged on the outer side of the channel, and the end of the blocking piece is connected with one end of the movable iron core, which faces the equipment air duct.
6. The multi-functional multi-way joint of claim 5, wherein the housing passes through the first channel, and the side walls of the housing facing the pressure adjustment mechanism air duct and the sensor meter air duct are provided with air outlets communicating with the pressure adjustment mechanism air duct and the sensor meter air duct; an air inlet communicated with the equipment air duct is formed in the wall, facing the equipment air duct, of the shell, and the stopping plugging piece plugs the air inlet; and a gap is reserved between the side wall of the stop plugging piece and the inner wall of the shell for communicating at least two air outlets.
7. The multi-functional multi-way joint of claim 2, further comprising an air supplement or/and test port in communication with the pressure regulating mechanism airway, or with the equipment airway, or with the sensor meter airway, via an air supplement and/or test airway.
8. The multi-functional multi-way joint of claim 2, further comprising a self-sealing valve in pneumatic communication with the pressure regulating mechanism vent, or with the equipment vent, or with the sensor gauge vent.
9. The multi-functional multi-way joint according to claim 1, characterized in that, the multi-functional multi-way joint further comprises a self-sealing valve, the self-sealing valve is sealed at the air supplement or/and test port, the self-sealing valve comprises a valve core, a spring, a sealing ring, a valve seat and a valve body, a sealed chamber is arranged inside the valve body, the valve core is positioned in the chamber to seal the air supplement or/and test port, the valve seat is arranged at the front end of the chamber, and the valve seat is provided with an opening to communicate the chamber with the air supplement and/or test airway; the spring is arranged around the valve core, and one end of the spring is abutted against the valve seat; the rear end of the valve core is in sealing contact with the cavity, and a gap is reserved between the valve core body and the cavity.
10. The multi-functional multi-way connector according to claim 9, wherein a sealing gasket is provided at the rear end of the chamber, i.e. at the rear end of the valve body, and an O-ring is provided at the inner side of the port, and the port is sleeved with a "chevron" or "hexagonal" protective cap, which is connected with the valve body by the sealing gasket and the O-ring in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921457443.8U CN211086521U (en) | 2019-09-04 | 2019-09-04 | Use multi-functional joint that leads to on electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921457443.8U CN211086521U (en) | 2019-09-04 | 2019-09-04 | Use multi-functional joint that leads to on electrical equipment |
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| CN211086521U true CN211086521U (en) | 2020-07-24 |
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| CN201921457443.8U Active CN211086521U (en) | 2019-09-04 | 2019-09-04 | Use multi-functional joint that leads to on electrical equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458772A (en) * | 2022-01-27 | 2022-05-10 | 国网宁夏电力有限公司电力科学研究院 | Gas circuit switch control module and gas density monitoring device adopting same |
| CN114705358A (en) * | 2022-03-02 | 2022-07-05 | 贵州电网有限责任公司 | Auxiliary checking device |
-
2019
- 2019-09-04 CN CN201921457443.8U patent/CN211086521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458772A (en) * | 2022-01-27 | 2022-05-10 | 国网宁夏电力有限公司电力科学研究院 | Gas circuit switch control module and gas density monitoring device adopting same |
| CN114705358A (en) * | 2022-03-02 | 2022-07-05 | 贵州电网有限责任公司 | Auxiliary checking device |
| CN114705358B (en) * | 2022-03-02 | 2023-12-01 | 贵州电网有限责任公司 | Auxiliary verification device |
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