CN112002608B - Assembly process of sulfur hexafluoride gas density relay - Google Patents
Assembly process of sulfur hexafluoride gas density relay Download PDFInfo
- Publication number
- CN112002608B CN112002608B CN202010912658.5A CN202010912658A CN112002608B CN 112002608 B CN112002608 B CN 112002608B CN 202010912658 A CN202010912658 A CN 202010912658A CN 112002608 B CN112002608 B CN 112002608B
- Authority
- CN
- China
- Prior art keywords
- assembly
- cavity
- measuring
- measuring element
- junction box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses an assembly process of a sulfur hexafluoride gas density relay, which comprises the following steps: assembly of the measuring assembly: the measuring assembly comprises a first measuring element and a second measuring element, the first measuring element comprises an air passage communicated with sulfur hexafluoride gas in the circuit breaker, the second measuring element is used for measuring environmental parameters in the air passage, a measuring end of the second measuring element is communicated with the air passage, and the first measuring element is fixed in a first cavity of the mounting shell; assembling circuit components: fixing a junction box with a circuit element on the outer side of the installation shell, wherein a circuit in the junction box passes through the installation shell and enters the installation shell; mounting of the display assembly: the display assembly is assembled on the first cavity and is electrically connected with the first measuring element. The assembly process is simple in process, and can realize the installation of two measuring elements simultaneously.
Description
Technical Field
The invention belongs to the technical field of instrument monitoring in an electric power system, and particularly relates to an assembly process of a sulfur hexafluoride gas density relay.
Background
Sulfur hexafluoride circuit breakers are high voltage electrical appliances widely used in power systems, and reliable operation of sulfur hexafluoride circuit breakers has become one of the most concerned problems in the power supply and utilization departments. The insulation and arc extinguishing performance of sulfur hexafluoride circuit breakers depends to a large extent on the density of sulfur hexafluoride gas, so monitoring of sulfur hexafluoride gas density is particularly important.
The existing density meter for monitoring the sulfur hexafluoride breaker is mostly realized by monitoring the temperature and the pressure; in the prior art, most sulfur hexafluoride gas density relays are measured in a purely mechanical pressure measurement mode, such as a corrugated pipe, a bowden pipe and the like, and the pressure adjustment or alarm is realized by measuring the gas pressure of sulfur hexafluoride in an air passage and then comparing the gas pressure with a standard and through the action of a micro switch so as to realize monitoring. However, with technological progress, sensing element measurement and other modes have been developed, and only pressure can be measured by adopting a purely traditional mechanical measurement mode, so that the modern requirements cannot be met.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides an assembling process of a six-Buddha sulfur density relay with at least two measuring modes or two measuring parameters, wherein the assembled six-Buddha sulfur density relay is provided with at least 2 measuring modes or at least 2 measuring instruments so as to realize the functions of measuring multiple measuring modes of the same parameter or simultaneously measuring at least 2 parameters through two measuring elements with different parameters; the assembly process is simple and safe, and can realize reasonable installation of two measuring elements.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the assembly process of the sulfur hexafluoride gas density relay comprises a measurement assembly, a display assembly and an installation assembly, wherein the assembly steps of the sulfur hexafluoride gas density relay are as follows:
assembly of the measuring assembly: the measuring assembly comprises a first measuring element and a second measuring element, the first measuring element comprises an air passage communicated with sulfur hexafluoride gas in the circuit breaker, the second measuring element is used for measuring environmental parameters in the air passage, a measuring end of the second measuring element is communicated with the air passage, and the first measuring element is fixed in a first cavity of the mounting shell;
assembling circuit components: fixing a junction box with a circuit element on the outer side of the installation shell, wherein a circuit in the junction box penetrates through the installation shell to enter the shell and is electrically connected with the first measuring element and the second measuring element;
mounting of the display assembly: the display component is at least used for displaying the measurement result of the first measurement element, is installed in the first cavity and is electrically connected with the first measurement element.
In the technical scheme, 2 different measuring elements are arranged, and compared with the prior art, the application of the sulfur hexafluoride gas density relay is expanded in both a measuring mode and a measuring parameter, so that the sulfur hexafluoride gas density relay can measure other parameters except pressure, such as temperature and the like.
Specifically, the first measuring element may be a conventional pointer-type six-Buddha sulfur density relay, which is only used for measuring pressure, and the second measuring element may be a temperature sensing element, in which case multiple measurements of temperature and pressure may be achieved; of course, the second measuring element can also be a pressure sensor, which together with the mechanical first measuring element enables monitoring of the pressure at the same time.
In the technical scheme, in the assembly process, the measuring end of the second measuring element is communicated with the air passage, and then the environmental parameters in the air passage can be timely obtained, so that the monitoring values such as pressure and temperature can be obtained.
The sulfur hexafluoride gas density relay in the technical scheme is mainly used in special circuit environments such as high voltage, and if the structure of the measuring element is complex, once equipment is problematic, the overhaul process is complex, and the use of the sulfur hexafluoride gas density relay is affected. For design production personnel, if the first measuring element and the second measuring element are assembled respectively, not only the structural position needs to be considered, but also the 2 measuring elements need to be communicated with the air passage respectively, the production process cost is high, especially for the design of a body structure, the volume of the whole structure needs to be increased, the change of a die is large, and the re-planning is needed; in production, 2 joints or 2 channels are required to be arranged to realize air hole communication with the circuit breaker, so that the mounting process is complex and the steps are more.
In the assembly process of the technical scheme, the display component, the first measuring element and the second measuring element are assembled respectively and are assembled in the installation shell, the display component and the measuring element are assembled separately in the assembly process, the display component and the measuring element are electrically connected with the junction box, the assembly can be realized through the wiring hole and the like, and the whole assembly process is simple.
In the technical scheme, when the measuring assembly is assembled, the junction box is fixed on the outer side of the mounting shell, so that the wiring holes of the junction box are arranged on the outer side, connection with other equipment or wiring heads is facilitated, and after the measuring assembly is assembled, circuit elements are assembled, and the problem of excessive circuits is not required to be considered; the measurement assembly is relatively speaking, occupation area is greater than circuit component, and circuit component if the circuit is too much, connects to arrange complicated, then the cavity that disturbs in the whole installation shell easily arranges, later maintenance is difficult, and measurement component is difficult to arrange, and if install measurement component earlier, then between installation shell and measurement component, there is the space, can make full use of clearance, sets up the circuit and arranges for it can rationally install.
As a further development of the invention, in the assembly of the measuring assembly, the first measuring element is provided with a circular mounting cavity, and the second measuring element is welded to the circular mounting cavity.
In this technical scheme, through setting up installation cavity and welding face on first measuring element, can make full use of this mature technique of welding, during the setting, can set up installation cavity and welding face at first measuring element's back, openly be used for showing measuring result, make full use of first measuring element's space, when second measuring element is the sensor element, adopt laser welding technique to carry out the welding of sensor element to carry out the burring.
In this technical scheme, adopt welded assembly technology, can make measurement subassembly firmly connect, if only adopt other circuit connection etc. to two kinds of measuring element, need consider the influence each other between the circuit, especially after the electric connection contact, whether can influence the measurement effect, whether can lead to whole measurement accuracy to reduce, in the use, if remove or carry instrument and meter, the measuring element of electric connection can remove, and measuring element position removes or shakes, once break away from the air flue, can't monitor.
As a further improvement of the invention, a jack communicated with the air passage is arranged at the mounting cavity, and a welding part is arranged at the periphery of the jack along the upper surface of the mounting cavity and is used for welding the second measuring element on the first measuring element.
In the technical scheme, assembly modes such as jack welding and the like are adopted, when the measuring points are connected, the measuring points are inserted and not welded, but the periphery is welded, namely, the periphery is firm, the center is in a measurable installation mode, and if the measuring points are welded and the like, the measuring accuracy and the like are easily influenced; in this technical scheme, the installation cavity can set up in the plane of the arbitrary non-display result of first measuring element, for example when the display module of display result is set up in the front, then the installation cavity can set up in back and side etc. as long as be non-front. At this time, one measuring assembly can be changed into 2 through welding assembly, and the application range in measurement is enlarged.
In actual use, the two measuring components are welded by laser, and after welding, the two measuring components are wrapped by SF6 leak detection equipment and kept still for 10 hours to detect leak, and the leak is less than 30 ppm.
As a further improvement of the invention, the first measuring element comprises a curved tube which is bent to form an inflatable connecting section and an adjusting area, and the second measuring element is fixedly arranged at the center position of the measuring adjusting area.
In the technical scheme, the bent pipe forms a pressure monitoring and adjusting core component of the six-Buddha sulfur density relay, a measuring area of the metal bent pipe is required to be provided with a pointer panel and the like in the later period, if a second measuring element is fixedly arranged in the area, the whole assembly process is relatively simple, an inflatable connecting section is communicated with an adjusting area, the adjusting area is mainly used for pointer change and temperature compensation, and the pointer and gear mechanism movement and the like are all the prior art of sulfur hexafluoride density relay design, so that description is not tired.
In the technical scheme, during assembly, the space is fully utilized, and then the technologies of welding and the like are combined, so that the traditional instrument type sulfur hexafluoride gas density relay realizes the combination mode of a pointer and a sensor, namely the mechanical mode and the electronic mode exist together, and a new mode is provided for the design and the assembly of the sulfur hexafluoride gas density relay.
As a further improvement of the invention, the assembly of the measuring assembly and the assembly of the circuit element are also comprised of the assembly of a junction box, the assembly of the junction box is specifically as follows: after the circuit element in the first junction box passes through the telescopic pipe, the circuit element is connected with the second junction box in a sealing way through a gluing process to form the junction box.
In the assembly of this technical scheme, set up 2 terminal boxes for circuit component in the first terminal box can be protected, in addition the mode of sealant, make two terminal boxes seal and constitute integrated terminal box, with circuit component's welding end etc. seal protection, avoid the circuit to expose, incident etc. that causes.
In this technical scheme, pass flexible pipe with circuit component, make things convenient for the line outgoing arrangement of circuit component, and flexible pipe that sets up can ensure the order of circuit when the terminal box extrudees, avoids extrusion deformation back, the mess of circuit scurry scheduling problem.
In the assembly of the junction box, the first junction box faces the direction of the second junction box, and is integrally connected with the protruding part, and the protruding part extends outwards to form a plurality of limiting cavities.
In this technical scheme, integrated into one piece is protruding and spacing chamber for the circuit is not coiled and is prone at the inner wall, but the guide trend upward, especially second terminal box direction down, and then for the design of the trend and the circuit of later stage circuit provide the basis, simultaneously, the difficult fracture of buckling of circuit.
As a further improvement of the present invention, in the assembly of the circuit component, the fixing of the junction box with the circuit component to the outside of the mounting case is specifically: the second measuring element is arranged in a second cavity of the installation shell, the circuit element on the junction box penetrates through the side wall of the second cavity to enter the second cavity, and the junction box is symmetrically and fixedly assembled on the outer wall of the second cavity through a fastener.
In this technical scheme, set up the circuit component in the lateral part of second cavity for the circuit can be close to the setting of second cavity, and then realizes being connected with the second measuring element in the second cavity, and specifically, the lateral wall of second cavity is arc structure, arc structure is hugged closely to the terminal box bottom and is assembled through screw etc..
In the prior art, when the second measuring element is a sensor, the sensor and the circuit are mostly assembled directly, and in the technical scheme, the sensor and the circuit are assembled by penetrating through the shell, so that the assembly is firmer.
In the technical scheme, a fixed mounting mode of a symmetrical structure is adopted, so that the stability of the structure is ensured.
As a further improvement of the invention, the junction box is symmetrically and fixedly assembled on the outer wall of the second cavity through a fastener, specifically: the fastener passes through the terminal box and is fixed in on the outer wall of second cavity, follows the installation direction of terminal box looks, the fastener symmetry sets up in terminal box both sides, and the installation height of fastener is less than the height of terminal box highest department.
In this technical scheme, during the assembly, the mounted position of fastener is lower, and then the periphery terminal box of fastener can also assemble other parts, and further, during the setting, the fastener adopts the screw, the degree of depth of the screw hole on the terminal box is greater than the installation length of screw for the screw part is hidden in the screw hole.
In the technical scheme, the central line of the junction box is used as a symmetry axis, the fasteners are symmetrically arranged on the junction box, and the junction box and the installation shell are well assembled.
As a further development of the invention, in the assembly of the circuit component, the second measuring element is provided with a circuit board, and the circuit component is soldered to a connection opening of the circuit board after passing through the mounting housing.
In the technical scheme, the circuit board is arranged, so that the reassembling among the circuits is realized, in particular, the circuit board is welded on the second measuring element, the wiring with the first measuring element can be realized through the circuit board, and the fixing of the circuit element on the junction box can be realized, so that multiple purposes are realized.
When the circuit component is specifically assembled, the circuit component is directly welded on the second measuring element, or a board welded with a circuit of the second measuring element is directly used as the circuit board, so that the assembly efficiency is improved.
In the installation of the display component, an assembly cavity is formed in the inner wall of the first cavity, a sealing ring is arranged in the assembly cavity, and the display component is detachably assembled in the first cavity through the sealing ring and the assembly cavity.
In the technical scheme, the display assembly is assembled through the sealing ring and the assembly cavity, so that the first cavity forms a complete sulfur hexafluoride gas density relay, the assembly process is simple, the sealing ring is arranged in the assembly cavity, preferably downward in position during actual operation, the top of the first cavity extends to form the protection ring, and the protection ring is used for protecting the edge of the display assembly after assembly.
When assembling, the first measuring element is a mechanical sulfur hexafluoride gas density relay, the display component is a dial plate of a pointer panel, the second measuring element is arranged on the back of the first measuring element, and then cavities are respectively arranged on the two sides of the mounting shell for assembling different measuring elements, so that the assembling speed is high, and the process is simple.
Drawings
FIG. 1 is a diagram showing the installation of a first measuring element and a second measuring element according to the present invention;
FIG. 2 is an assembly view of a first measuring element provided by the present invention;
FIG. 3 is an assembly view of the junction box provided by the present invention;
FIG. 4 is a top view of a first junction box provided by the present invention;
FIG. 5 is an assembled view of the junction box and mounting housing provided by the present invention;
reference numerals illustrate:
100. a first measuring element; 110. an airway; 120. a mounting cavity; 130. an inflatable connecting section; 140. measuring an adjustment area; 150. a curved tube; 160. a display assembly; 200. a second measuring element; 300. a mounting shell; 310. a first cavity; 320. a second cavity; 400. a junction box; 410. a first junction box; 420. a second junction box; 430. a telescopic tube; 440. a boss; 450. a spacing cavity; 500. a fastener.
Detailed Description
The following describes specific embodiments of the invention with reference to the drawings and examples:
example 1
As shown in fig. 1-5, which illustrate specific embodiments of the present invention.
Specifically, the sulfur hexafluoride gas density relay in this embodiment includes a measurement assembly, a display assembly and an installation assembly, the measurement assembly includes at least two measurement elements, and the assembly steps of the sulfur hexafluoride gas density relay are as follows:
first, assembling a measuring assembly:
referring to fig. 1-2, the measuring assembly includes a first measuring element 100 and a second measuring element 200, wherein the first measuring element 100 includes an air passage 110 in communication with sulfur hexafluoride gas in the circuit breaker, and the second measuring element 200 is used for measuring environmental parameters in the air passage 110; the measuring end of the second measuring element 200 is communicated with the air channel 101, and the first measuring element 100 is fixed in the first cavity 310 of the mounting shell 300;
referring to fig. 1, a circular mounting cavity 120 is provided on the first measuring element 100, and the second measuring element 200 is welded to the circular mounting cavity 120.
In the embodiment, the mature technology of welding can be fully utilized by arranging the mounting cavity and the welding surface on the first measuring element, and when the welding device is arranged, the mounting cavity and the welding surface are arranged on the back surface of the first measuring element, and the front surface is used for displaying the measurement result, so that the space of the first measuring element is fully utilized; when the second measuring element is a sensor element, the welding of the sensor element is performed using a laser welding technique and deburring is performed.
In this embodiment, a welding assembly process is adopted, so that the measurement assembly can be firmly connected, and for two measurement elements, if other circuit connections are adopted, the mutual influence between the circuits needs to be considered, especially, after the electric connection contacts, whether the measurement effect can be influenced, whether the whole measurement accuracy can be reduced, in use, if the instrument is moved or carried, whether the measurement element which is electrically connected can be moved, and the position of the measurement element is moved or swayed, once the measurement element is separated from the air passage, the monitoring cannot be performed.
In this embodiment, a circular mounting cavity is used, which can match a plurality of shapes such as a circle, a square, etc., and since there are not too many components on the back of the first measuring element, the first measuring element can be directly assembled. The circular mounting cavity can be formed on the back surface of the first measuring element by a mold, welding or other processes, and the second measuring element with the mounting cavity or the mounting part can be directly welded and fixedly mounted.
Further, in order to facilitate the fastening connection, a socket communicating with the air duct 110 is provided at the installation cavity 120, and when assembled, the measuring part of the second measuring element 200 directly extends into the socket, and then the outer circumference of the measuring part is welded by a welding part at the outer circumference of the socket.
When specifically setting, the air channel 110 may be a square structure or a cylindrical structure, and is directly communicated with the circular arc structure of the first measuring element, when setting the jack, the air channel 110 may be extended towards the second measuring element, if the second measuring element is provided with a circuit board, the measuring part of the second measuring element is necessarily on the circuit board, and then the second measuring element can be directly contacted with the air channel.
In this embodiment, assembly modes such as jack welding are adopted, and when the measurement points are connected, the measurement points are inserted and not welded, but peripheral welding, that is, an installation mode with firm periphery and measurable center is adopted, and if the measurement points are operated in a mode such as welding, the measurement accuracy and the like are easily affected; in this embodiment, the mounting cavity may be disposed in any one of the first measuring elements, in a plane not displaying the result, for example, when the display unit displaying the result is disposed on the front surface, the mounting cavity may be disposed on the back surface, the side surface, or the like, as long as it is not the front surface. At this time, one measuring assembly can be changed into 2 through welding assembly, and the application range in measurement is enlarged.
In actual use, laser welding, and after welding, binding and standing for 10 hours by using SF6 leak detection equipment, wherein less than 30ppm is qualified. Leak detection at this time can ensure that the installation between the measurement components is tight.
In this embodiment, the first measuring element is connected with the air passage, and the second measuring element needs to monitor the environmental parameters in the air passage, so that the communication with the air passage is necessarily involved, if a welding mode of separately communicating with the air passage is adopted, the volume structure of the sulfur hexafluoride gas density relay is necessarily increased, the assembly process is more complex, and the mounting surface is directly formed on the surface of the first measuring element by utilizing the advantage that the first measuring element is communicated with the air passage, so that the whole assembly is realized, and the process steps are simpler.
Further, referring to fig. 2, it can be seen that the first measuring element 100 includes a curved tube 150, the curved tube 150 is bent to form the inflatable connecting section 130 and the adjusting area 140, and the second measuring element 200 is fixedly disposed at a central position of the adjusting area 140.
In this embodiment, the structural principle of the sulfur hexafluoride gas density relay is as follows: the SF6 gas density meter mainly comprises elastic metal curved tube, gear mechanism, pointer, double-layer metal belt and other parts, and is formed by adding double-layer metal belt into spring tube type pressure meter mechanism. Specifically, a hollow elastic metal bent pipe is connected with a circuit breaker through an air passage, the inner space of the hollow elastic metal bent pipe is communicated with SF6 gas in the circuit breaker, the end part of the elastic metal bent pipe is hinged with a double-layer metal belt which plays a role in temperature compensation, and the double-layer metal belt is hinged with a gear mechanism and a pointer mechanism; when the sulfur hexafluoride gas content in the circuit breaker is changed to change the pressure, the end part of the elastic metal tube drives the circuit breaker to move, so that the temperature is regulated, and the pointer of the density relay always points to the rated pressure or the density value at 20 ℃ through temperature compensation.
In this embodiment, the pointer, the double-layer metal strip and the direction of movement of the pointer form an adjustment zone, and the second measuring element, i.e. the sensor element, is welded on the back side of the adjustment zone, so that multiple purposes are achieved.
Second, assembling the junction box:
in this embodiment, referring to fig. 3, the junction box 400 includes a first junction box 410 and a second junction box 420, and when assembled, the circuit element in the first junction box 410 passes through the telescopic tube 430 and is connected with the second junction box 420 in a sealing manner by a gluing process.
In this embodiment, 2 terminal boxes are provided, so that the terminal heads and the like in the first terminal box are sealed and are not exposed, and the two terminal boxes are sealed to form 1 terminal box by a gluing process, so that the internal circuit is sealed and protected. Compared with the structure of 1 junction box, the structure is complex, but the circuit can be orderly and clearly arranged in advance, so that the internal circuit is not easy to generate events such as winding. On one hand, the assembly process of the sealant is adopted, so that the sealing performance is good, and the exposed junction box is not easy to enter water; on the other hand, the assembly process of the sealant has simple assembly mode, is easy to realize production and improves the production efficiency.
In this embodiment, pass flexible pipe with circuit component, make things convenient for the line outgoing arrangement of circuit component, and flexible pipe that sets up can ensure the order of circuit when the terminal box extrudees, avoids extrusion deformation back, the mess of circuit scurry scheduling problem.
Further, as shown in fig. 3-4, the first junction box 410 faces the second junction box 420, and is integrally connected with a protrusion 440, and the edge of the protrusion 440 extends outwards to form a limiting cavity 450 for limiting the telescopic tube 430.
Specifically, the limiting cavity is a cavity with a circular arc-shaped cross section, and the circular arc-shaped cavity structures are radially arranged by taking the center of the circuit element of the junction box as the center, so that a plurality of strand lines radiate.
In this embodiment, integrated into one piece is protruding and spacing chamber for the circuit is not coiled and is prone at the inner wall, but the trend that guides upwards, for the design of the trend of later stage circuit and circuit provides the basis, simultaneously, the difficult fracture of buckling of circuit. In this embodiment, protruding structure and spacing chamber etc. can carry out structural adjustment according to actual demand, but when first terminal box production and processing, protruding portion and spacing chamber pass through the mould, an organic whole sets up.
In this embodiment, due to the radiation setting of the limiting cavity, once bending and the like occur, each circuit moves towards the periphery of the first junction box in the radiation direction of the body, so that the problem of cross winding of other circuit elements is avoided.
Thirdly, assembling circuit components:
specifically, referring to fig. 5, a junction box 400 with a circuit element is fixed to the outside of the mounting case 300, and the circuit in the junction box 400 passes through the mounting case 300, enters the case, and is electrically connected to both the first measuring element 100 and the second measuring element 200;
in the assembly of the circuit component, the terminal box 400 with the circuit component is fixed to the outside of the mounting case 300 specifically: the second measuring element 200 is disposed in the second cavity 320 of the mounting case 300, the circuit element on the junction box 400 passes through the side wall of the second cavity 320 and enters the second cavity 320, and the junction box 400 is symmetrically and fixedly assembled on the outer wall of the second cavity 320 through the fastening piece 500.
In this embodiment, set up the circuit component in the lateral part of second cavity for the circuit can be close to the setting of second cavity, and then realizes being connected with the second measuring element in the second cavity, and specifically, the lateral wall of second cavity is arc structure, arc structure is hugged closely to the terminal box bottom and is assembled through screw etc..
In the prior art, when the second measuring element is a sensor, the sensor and the circuit are mostly assembled directly, but in the technical scheme, the circuit can be assembled directly outwards by penetrating through the shell, so that the assembly is firm. In this embodiment, a fixed mounting manner with a symmetrical structure is adopted, so that the stability of the structure is ensured.
Further improved, the junction box 400 is symmetrically and fixedly assembled on the outer wall of the second cavity 320 through a fastener 500, specifically: the fastening members 500 penetrate through the junction box 400 and are fixed on the outer wall of the second cavity 320, the fastening members 500 are symmetrically arranged at two sides of the junction box 400 when seen in the installation direction of the junction box 400, and the installation height of the fastening members 500 is lower than the height of the highest part of the junction box 400.
In this embodiment, during the assembly, the mounted position of fastener is lower, and then the periphery terminal box of fastener can also assemble other parts, and further, during the setting, the fastener adopts the screw, the degree of depth of the screw hole on the terminal box is greater than the length of screw body for the screw part is hidden in the screw hole.
In the embodiment, the central line of the junction box is taken as a symmetry axis, the fasteners are symmetrically arranged on the junction box, and the junction box and the installation shell can be well assembled.
Further, in the assembly of the circuit component, the second measuring component is provided with a circuit board, and the circuit component passes through the mounting shell and is welded on a wiring port of the circuit board.
In this embodiment, the circuit board is provided, so that the reassembly between the circuits is realized, specifically, the circuit board is welded on the second measuring element, the wiring with the first measuring element can be realized through the circuit board, and the fixation of the circuit element on the junction box can be realized.
When the circuit component is specifically assembled, the circuit component is directly welded on the second measuring element, or a board welded with a circuit of the second measuring element is directly used as the circuit board, so that the assembly efficiency is improved.
Fourth step, mounting the display assembly
Referring to fig. 2, the display assembly 160 is at least used for displaying the measurement result of the first measuring element 100, and the display assembly 160 is installed in the first cavity 310 and is electrically connected to the first measuring element 100.
Further, an assembly cavity is formed in the inner wall of the first cavity 310, a sealing ring is arranged in the assembly cavity, and the display assembly 160 is detachably assembled in the first cavity through the sealing ring and the assembly cavity.
In this embodiment, through sealing washer and assembly chamber, assemble the display module for first cavity body forms complete sulfur hexafluoride gas density relay, and assembly process is simple, and during actual operation, the position of sealing washer, preferably down sets up in the assembly intracavity, and first cavity top extends, forms the guard circle, and after the assembly, the guard circle is used for protecting the edge of display module.
When assembling, the first measuring element is a mechanical sulfur hexafluoride gas density relay, the display component is a dial plate of a pointer panel, the second measuring element is arranged on the back of the first measuring element, and then cavities are respectively arranged on the two sides of the mounting shell for assembling different measuring elements, so that the assembling speed is high, and the process is simple.
The beneficial effects of this embodiment are as follows:
in the invention, 2 different measuring elements are arranged, and compared with the prior art, the application of the sulfur hexafluoride gas density relay is expanded in both the measuring mode and the measuring parameters, so that the sulfur hexafluoride gas density relay can realize the measurement of other parameters except the pressure, such as the temperature and the like.
Specifically, the first measuring element may be a conventional pointer-type six-Buddha sulfur density relay, which is only used for measuring pressure, and the second measuring element may be a temperature sensing element, in which case multiple measurements of temperature and pressure may be achieved; of course, the second measuring element can also be a pressure sensor, which together with the mechanical first measuring element enables monitoring of the pressure at the same time.
In this embodiment, in the assembly process, the measuring end of the second measuring element is communicated with the air channel, so that environmental parameters in the air channel can be timely obtained, and monitoring values such as pressure and temperature can be obtained.
The sulfur hexafluoride gas density relay in the embodiment is mainly used in special circuit environments such as high voltage, if the structure of the measuring element is complex, once equipment has problems, the overhaul process is complex, and the use of the sulfur hexafluoride gas density relay is affected. For design production personnel, if the first measuring element and the second measuring element are assembled respectively, not only the structural position needs to be considered, but also the 2 measuring elements need to be communicated with the air passage respectively, the production process cost is high, especially for the design of a body structure, the volume of the whole structure needs to be increased, the change of a die is large, and the re-planning is needed; and during production, 2 joints or 2 channels are required to be arranged, so that the air holes of the circuit breaker are communicated, and the production cost is high.
In the assembly process of the embodiment, the display component, the first measuring element and the second measuring element are respectively arranged in different shells and are assembled in the installation shell, the display component and the measuring element are assembled separately in the assembly process, and are electrically connected with the junction box, so that the assembly can be realized through the wiring holes and the like, and the whole assembly process is simple.
In the embodiment, during assembly, the junction box is fixed on the outer side of the mounting shell, so that the wiring holes of the junction box are arranged on the outer side, connection with other equipment or wiring heads is facilitated, and after the measuring assembly is assembled, the circuit element is assembled; the measurement assembly is relatively speaking, occupation area is greater than circuit component, and circuit component if the circuit is too much, connects to arrange complicated, then the cavity that disturbs in the whole installation shell easily arranges, later maintenance is difficult, and measurement component is difficult to arrange, and if install measurement component earlier, then between installation shell and measurement component, there is the space, can make full use of clearance, sets up the circuit and arranges for it can rationally install.
In this embodiment, in the assembly of the circuit component, the fixing of the junction box with the circuit component to the outside of the mounting case is specifically: the side part of the installation shell is provided with a perforation, the second junction box is attached to the installation shell, and a circuit element in the junction box passes through the perforation and enters the installed shell.
In this embodiment, two measuring elements are fixed in respectively the positive and negative two sides of installation shell, make full use of the mounting panel of installation shell, realize the rational utilization of space.
In this embodiment, the through hole is formed in the mounting shell, only the circuit component enters the mounting shell, and one connection end of the circuit component is arranged on the junction box and directly connected with the outside, so that the protection of the circuit is realized.
During specific assembly, for the second measuring element, insulating pads are respectively arranged on two sides of the circuit board to realize insulation, and an elastic pad is additionally arranged on one side far away from the first measuring element to realize protection of the installation shell panel and buffering in movement.
Example 2
In this embodiment, the detailed installation of the sulfur hexafluoride gas density relay will be mainly described.
In this embodiment, the first measuring element is a pressure measuring device of the sulfur hexafluoride gas density relay body, that is, a mechanical sulfur hexafluoride density relay, and the second measuring element is a temperature sensor or a pressure sensor.
Firstly, welding a sensor serving as a second measuring element on the back of the sulfur hexafluoride gas density relay, and specifically, welding on the back of an instrument display panel by utilizing a welding technology; before welding, the inductive probe of the sensor is stretched into the inflatable joint at the position of the instrument display panel or the air passage so as to realize the real-time monitoring of sulfur hexafluoride gas in the sensor. During welding, smoothness and burr free are required, and the welding seam is treated. After welding, leak detection is needed, specifically, the DF6 leak detection equipment is adopted for binding and then the leak detection is carried out after the binding is carried out for 10 hours, and the leak detection is qualified when the leak detection is less than 30 PPm.
Next, the junction box is assembled. And 6 single wires are welded in the first junction box and sleeved with a black shrinkage tube, and the wire length is 100mm. After welding, the single wires are twisted pairwise for standby. And respectively smearing sealant in the first junction box and the second junction box to realize sealing connection.
The sealant is prepared by grinding 5699.
Again, the junction box is assembled with the mounting housing.
The first junction box and the second junction box are assembled to the side part of the installation shell, screws are adopted for installation, particularly M3-20 countersunk screws, and four screws form quadrilateral installation and are tightened diagonally during installation so as to ensure balance. After installation, K-704B sealant is poured into the junction box, and the junction box is tightly poured and needs to be waterproof.
After the junction box is installed, the circuit in the junction box is led into the installation shell, and the circuit element in the junction box is welded and connected through the circuit board of the second measuring element, and the circuit on the first measuring element can also be directly welded on the second measuring element.
In this embodiment, the installation shell is a through shell, the first measuring element and the second measuring element are welded through a circuit board and the like to form a back-to-back installation mode, the display component is additionally arranged on one surface of the shell facing the first measuring element, the cover body is arranged on the other side of the shell to form a sealed shell structure, the first cavity and the second cavity are relatively virtual cavities, and the junction box is arranged on the side of the installation shell. The inflatable connecting section 130 may be taken as a cross section to divide the interior of the mounting housing into a first cavity and a second cavity for ease of understanding.
In this embodiment, when the cover body at the rear side of the installation shell is installed, a sealing ring, sealing grease, and the like are required to be provided to achieve thorough sealing. When the circuit board is welded, the circuit components are 6 strands, namely an RS485 interface component, GND, DC and the like, and the circuit components comprise a plurality of power lines, signal lines and the like; when the circuit board is mounted, attention is paid to the direction, specifically, the direction of the signal line or the like is set upward, so that a yielding is provided for the mounting of the first measuring element or the like.
While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and these changes relate to the related art well known to those skilled in the art, which fall within the scope of the present invention.
Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (8)
1. The assembly process of the sulfur hexafluoride gas density relay is characterized in that the sulfur hexafluoride gas density relay comprises a measuring assembly, a display assembly and an installation assembly, and the assembly steps of the sulfur hexafluoride gas density relay are as follows:
assembly of the measuring assembly: the measuring assembly comprises a first measuring element and a second measuring element, the first measuring element comprises an air passage communicated with sulfur hexafluoride gas in the circuit breaker, the second measuring element is used for measuring environmental parameters in the air passage, a measuring end of the second measuring element is communicated with the air passage, and the first measuring element is fixed in a first cavity of the mounting shell;
assembling circuit components: fixing a junction box with a circuit element on the outer side of the installation shell, wherein a circuit in the junction box penetrates through the installation shell to enter the shell and is electrically connected with the first measuring element and the second measuring element;
mounting of the display assembly: the display component is at least used for displaying the measurement result of a first measurement element, is assembled on the first cavity and is electrically connected with the first measurement element;
the installation shell is a through shell, the first measuring element and the second measuring element are welded through a circuit board to form a back-to-back installation mode, the display component is additionally arranged on one surface of the shell facing the first measuring element, the cover body is arranged on the other side of the shell to form a sealed shell structure, the first cavity and the second cavity are relatively virtual cavities, the junction box is arranged on the side part of the installation shell, the inflatable connecting section is taken as a section, the inside of the installation shell is divided into the first cavity and the second cavity,
the assembly of the measuring assembly and the assembly of the circuit element are preceded by the assembly of a junction box, and the assembly of the junction box is specifically as follows: after the circuit element in the first junction box passes through the telescopic pipe, the circuit element is connected with the second junction box in a sealing way through a gluing process to form the junction box;
in the assembly of the junction boxes, the first junction box faces the direction of the second junction box, and is integrally connected with a protruding part which extends outwards to form a plurality of limiting cavities;
specifically, the limiting cavity is a cavity with a circular arc-shaped cross section, and the circular arc-shaped cavity structures are radially arranged by taking the center of the circuit element of the junction box as the center, so that a plurality of strand lines radiate.
2. The assembly process of the sulfur hexafluoride gas density relay according to claim 1, wherein in the assembly of the measuring assembly, a circular mounting cavity is formed in the first measuring element, and the second measuring element is welded to the circular mounting cavity.
3. The assembly process of the sulfur hexafluoride gas density relay according to claim 2, wherein the installation cavity is provided with a jack communicated with the air passage, and a welding portion is arranged on the periphery of the jack along the upper surface of the installation cavity and used for welding the second measuring element on the first measuring element.
4. The assembly process of the sulfur hexafluoride gas density relay according to claim 1, wherein the first measuring element comprises a bent pipe, the bent pipe is bent to form an inflatable connecting section and an adjusting area, and the second measuring element is fixedly arranged at the center of the adjusting area.
5. The assembly process of the sulfur hexafluoride gas density relay according to claim 1, wherein in the assembly of the circuit component, the fixing of the junction box with the circuit component outside the mounting case is specifically: the second measuring element is arranged in the second cavity of the installation shell, the circuit element on the junction box penetrates through the side wall of the second cavity to enter the second cavity, and the junction box is fastened 2 The parts are symmetrically and fixedly assembled on the outer wall of the second cavity.
6. The assembly process of the sulfur hexafluoride gas density relay according to claim 5, wherein the junction box is symmetrically and fixedly assembled on the outer wall of the second cavity through a fastener, specifically: the fastener passes through the terminal box and is fixed in on the outer wall of second cavity, follows the installation direction of terminal box looks, the fastener symmetry sets up in terminal box both sides, and the installation height of fastener is less than the height of terminal box highest department.
7. The assembling process of the sulfur hexafluoride gas density relay according to claim 1, wherein in the assembling of the circuit component, the second measuring component is provided with a circuit board, and the circuit component is welded to a wiring port of the circuit board after passing through the mounting case.
8. The assembly process of the sulfur hexafluoride gas density relay according to claim 1, wherein in the installation of the display assembly, an assembly cavity is formed in the inner wall of the first cavity, a sealing ring is arranged in the assembly cavity, and the display assembly is detachably assembled in the first cavity through the sealing ring and the assembly cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010912658.5A CN112002608B (en) | 2020-09-03 | 2020-09-03 | Assembly process of sulfur hexafluoride gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010912658.5A CN112002608B (en) | 2020-09-03 | 2020-09-03 | Assembly process of sulfur hexafluoride gas density relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112002608A CN112002608A (en) | 2020-11-27 |
| CN112002608B true CN112002608B (en) | 2023-04-21 |
Family
ID=73465318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010912658.5A Active CN112002608B (en) | 2020-09-03 | 2020-09-03 | Assembly process of sulfur hexafluoride gas density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112002608B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207474363U (en) * | 2017-11-01 | 2018-06-08 | 西安共创电力科技有限责任公司 | A kind of sulfur hexafluoride density controller with transporting function |
| CN107863270A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay and its installation method of middle part outlet |
| CN207764355U (en) * | 2018-01-31 | 2018-08-24 | 国网新疆电力有限公司昌吉供电公司 | Pointer sulfur hexafluoride density relay compensation function detection device |
| CN108550499A (en) * | 2018-04-27 | 2018-09-18 | 朗松珂利(上海)仪器仪表有限公司 | Sulfur hexafluoride gas density relay and its assembly technology |
| CN208833887U (en) * | 2018-08-15 | 2019-05-07 | 国网浙江省电力有限公司电力科学研究院 | A kind of multrirange sulfur hexafluoride density relay tester |
-
2020
- 2020-09-03 CN CN202010912658.5A patent/CN112002608B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112002608A (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105609368B (en) | A kind of gas density relay with gas density level indicator | |
| CN112002608B (en) | Assembly process of sulfur hexafluoride gas density relay | |
| CN201036151Y (en) | Backbone type totally-enclosed current mutual inductor | |
| CN213274560U (en) | Display type vibration transmitter | |
| CN211927077U (en) | High-insulation voltage-resistant and anti-surge triaxial vibration sensor | |
| CN213481537U (en) | Vibration transmitter | |
| CN105374624B (en) | A kind of gas density relay provided with external gas density level indicator | |
| CN113140938A (en) | Connector assembly | |
| CN210803673U (en) | Electric connection piece integrated sensor for intelligent motor | |
| CN204760867U (en) | Fiber optic current sensor shell, fiber optic current sensor and GIS equipment for GIS | |
| CN210246491U (en) | Intelligent motor junction box with pre-installed sensor | |
| CN207081805U (en) | Position the device of GIL discharge faults | |
| CN203705500U (en) | Electric energy meter junction box | |
| CN111537840A (en) | T-shaped cable joint insulation rear plug with passive ultrasonic monitoring function | |
| CN202067659U (en) | Current transformer | |
| CN220961086U (en) | High-precision display operation SF6Density micro water sensor | |
| CN215989319U (en) | Direct-connection conductive piece of combined current and voltage transformer | |
| CN210514419U (en) | Power consumption information monitoring device of electrical equipment | |
| CN217133207U (en) | Novel intelligent lightning protection online monitoring terminal | |
| CN211209257U (en) | Explosion-proof junction box for power distribution cabinet | |
| CN212363467U (en) | Temperature sensor mounting plug for circuit breaker | |
| CN219268137U (en) | Metering cabinet with environment monitoring function | |
| CN217823944U (en) | Aerify cabinet sealed effectual | |
| CN217879398U (en) | Iron core grounding current on-line measuring device | |
| CN213874482U (en) | Wireless intelligent sensor for transformer substation online monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |