CN106291345B - Load simulation mechanism and load simulation test device of circuit breaker operating mechanism - Google Patents
Load simulation mechanism and load simulation test device of circuit breaker operating mechanism Download PDFInfo
- Publication number
- CN106291345B CN106291345B CN201610642805.5A CN201610642805A CN106291345B CN 106291345 B CN106291345 B CN 106291345B CN 201610642805 A CN201610642805 A CN 201610642805A CN 106291345 B CN106291345 B CN 106291345B
- Authority
- CN
- China
- Prior art keywords
- piston
- cavity
- circuit breaker
- rod
- load
- 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
- 230000007246 mechanism Effects 0.000 title claims abstract description 53
- 238000004088 simulation Methods 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000013016 damping Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 15
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gas-Insulated Switchgears (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a load simulation mechanism of a circuit breaker operating mechanism and a load simulation test device, the load simulation mechanism of the circuit breaker operating mechanism comprises a buffer cylinder and a piston arranged in the buffer cylinder, the piston is provided with an operating rod which is in transmission connection with the operating mechanism and can drive the piston to act together, at least one position on the piston or on the buffer cylinder or between the piston and the buffer cylinder is provided with a damping channel communicated with cavities at two sides of the piston, when the piston acts towards a rod cavity, gas in the rod cavity is compressed, when the gas in the rod cavity enters a rodless cavity through the damping channel, acting force is generated on the piston, when the piston acts towards the rodless cavity, the gas in the rodless cavity is compressed and enters the rod cavity through the damping channel, acting force is generated on the piston, the simulation test of the circuit breaker by adopting the gas as a load can more truly and effectively simulate the actual working condition of the circuit breaker, the reliability of the test result is high.
Description
Technical Field
The invention relates to a load simulation mechanism of a circuit breaker operating mechanism and a load simulation test device using the same.
Background
The opening and closing of the circuit breaker is mainly realized by an operating mechanism, so the characteristics of the circuit breaker are mainly determined by the operating mechanism, such as the opening and closing speed, the opening and closing time, and the like, in order to ensure the reliability of the operating mechanism, each operating mechanism needs to carry a load to debug and carry out a certain number of operation tests before leaving the factory, because the operating power of the circuit breaker, particularly the operating mechanism of a high-voltage circuit breaker, is very large, the operating mechanism is easy to damage under the condition of no certain load, namely the operating mechanism can not independently carry out idle operation, and the operating mechanism can be operated or tested only by being assembled with a support post and an arc extinguish chamber of the circuit breaker, because the volume and the mass of the support post and the arc extinguish chamber of the circuit breaker are very large, the assembly cost is high, at present, a mode of using a weight adjustable block as the load is adopted for testing, including cushion cylinder 1, piston rod 2 with set up adjustable counterweight block 3 on piston rod 2, operating mechanism is connected with piston rod 2 and action bars, piston rod 2 drives adjustable counterweight block 3 and accomplishes the action of simulation divide-shut brake in cushion cylinder 1, but because the contact of circuit breaker is in high-pressure insulating gas in fact, consequently, the resistance that the contact of circuit breaker received in the actual work all is produced by the inside high-pressure insulating gas effect of circuit breaker, consequently, adopt the simulation test that adjustable counterweight block mode regarded as the load can not true effectual simulation circuit breaker's actual operating condition, and vibration amplitude is big in the use, the noise is dazzling.
Disclosure of Invention
The invention aims to provide a load simulation mechanism of a circuit breaker operating mechanism, which can truly and effectively simulate the actual working condition of a circuit breaker; meanwhile, the invention also aims to provide a load simulation test device using the load simulation mechanism.
In order to achieve the above purpose, the technical scheme of the load simulation mechanism of the circuit breaker operating mechanism of the invention is as follows: the load simulation mechanism of the circuit breaker operating mechanism comprises a buffer cylinder and a piston arranged in the buffer cylinder, wherein an operating rod which is used for being in transmission connection with the operating mechanism and can drive the piston to act together is arranged on the piston, and a damping channel communicated with cavities on two sides of the piston is arranged on the piston or on the buffer cylinder or at least one position between the piston and the buffer cylinder.
One of the cavity wall of the rod cavity and the cavity wall of the rodless cavity is provided with a one-way valve, and the other cavity wall is provided with a convection hole.
The one-way valve is arranged on the cavity wall of the rod cavity, and the convection hole is arranged on the cavity wall of the rodless cavity.
The buffer cylinder comprises a cylinder body and a cover plate in sealing fit with one end of the cylinder body, the cover plate, the cylinder body and the piston form a rod cavity, and the one-way valve is arranged on the cover plate.
The check valve is including locating the air flue that can supply the outside gas admission of cushion cylinder to have the pole intracavity on the apron, and the air flue forms the gas port on the internal surface of apron, and the check valve is still including setting up the unsteady baffle that is used for closing cap gas port when the piston is close to the gas port action, opens the gas port when the piston is kept away from the gas port action on the gas port.
And the cover plate is provided with a limiting structure for limiting the maximum moving stroke of the floating baffle.
The damping channel comprises air holes which are arranged on the piston and communicated with cavities on two sides of the piston.
The load simulation mechanism of the circuit breaker operating mechanism further comprises a sealing shell arranged on the periphery of the buffer cylinder in a surrounding mode, and an operating rod through hole for the operating rod to penetrate through is formed in the cylinder wall of the sealing shell.
And the sealed shell is provided with a barometer for detecting the air pressure in the sealed shell.
The technical scheme of the load simulation test device is as follows: a load simulation test device comprises a power mechanism and a load simulation mechanism, wherein the load simulation mechanism adopts the load simulation mechanism of the circuit breaker operating mechanism.
The invention has the beneficial effects that: when the piston acts towards the rod cavity, gas in the rod cavity is compressed, acting force is generated on the piston when the gas in the rod cavity enters the rodless cavity through the damping channel, the acting force is generated on the piston when the gas in the rodless cavity is compressed and enters the rod cavity through the damping channel, and when the piston acts towards the rodless cavity, the gas in the rodless cavity generates acting force on the piston when the gas in the rodless cavity is compressed and enters the rod cavity through the damping channel.
Further, the sealing shell and the buffer cylinder form a double-layer shell, and noise in the test process can be effectively reduced.
Drawings
FIG. 1 is a schematic structural diagram of a simulation test apparatus in the background art;
FIG. 2 is a schematic structural diagram of an embodiment of a load simulation test apparatus according to the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. The specific embodiment of the load simulation test device of the invention is shown in fig. 2 to 3, and comprises a power mechanism and a load simulation mechanism, wherein the power mechanism comprises a power input pull rod 19, a crank arm 20 and a support shaft 21 for mounting the crank arm 20, one end of the crank arm 20 is in transmission connection with the power input pull rod 19, the load simulation mechanism comprises a seal housing 10, a buffer cylinder 4 arranged inside the seal housing 10, a piston 5 arranged in the buffer cylinder 4 and an operating rod 7 arranged on the piston 5 and capable of driving the piston 5 to act together and penetrate out of the seal housing 10, the operating rod 7 is in sliding seal fit with the seal housing 10, a wear-resistant ring 6 is arranged on the outer circular surface of the piston 5 to prolong the service life of the piston 5, and the end of the operating rod 7 is in transmission connection with the other end of the crank arm 20. The sealing shell 10 comprises an outer cylinder body and a supporting plate 12, the outer cylinder body is of a U-shaped structure, the outer cylinder body and the supporting plate 12 are in sealing fit to form a closed cavity, and an operating rod penetrating hole for allowing the operating rod 7 to penetrate out is formed in the supporting plate 12. High-pressure gas of 0.6MPa is filled in the sealing shell and the buffer cylinder, and the actual working condition of the contact of the circuit breaker is in the insulating gas environment of 0.6MPa, so that the actual working condition of the circuit breaker can be better simulated, and the reliability of a test result is improved.
The buffer cylinder 4 comprises a cylinder body 14 and a cover plate 15 arranged at the lower end of the cylinder body 14, the cylinder body 14 is of a U-shaped cylinder structure with one end of a cylinder cover, the cover plate 15 is in sealing fit with the opening end of the cylinder body 14, a through hole which is used for allowing the operating rod 7 to penetrate through and corresponds to the operating rod penetrating hole is formed in the cover plate 15, the cover plate 15 can serve as the cylinder cover at the other end of the buffer cylinder 4, the piston 5 divides a piston cavity formed by the cylinder body 14 and the cover plate 15 into a rod cavity and a rodless cavity, and the cover plate 15, the cylinder body 14 and the piston. The piston 5 is provided with an air hole 8 communicated with a rod cavity and a rodless cavity, the air hole 8 forms a damping channel, the upper cylinder cover of the cylinder body 14 is provided with a convection hole 9 capable of discharging air inside the cylinder body, and the cover plate 15 of the buffer cylinder 4 is provided with a one-way valve. The check valve is including locating the gas access 16 that can supply the inside gas of sealed housing to get into there being the pole intracavity on apron 15, and gas access 16 forms the gas port on the internal surface of apron 15, and the check valve still including setting up being used for in gas port department when piston 5 is close to the check valve action closing cap gas port, opening the unsteady baffle 17 of gas port when piston 5 keeps away from the check valve action, still is equipped with the limiting plate 18 that is used for spacing unsteady baffle 17 maximum movement stroke on the apron 15. The cover plate 15 is a step structure and comprises a first cover plate part and a second cover plate part, the first cover plate part is used for being matched with the end part of the cylinder body 14 of the buffer cylinder 4 in a sealing mode, the second cover plate part is located inside the cylinder body 14 of the buffer cylinder 4, the limiting plate 18 is arranged on the second cover plate part, the floating baffle 17 is a circular plate which is sleeved on the operating rod 7 in a sliding mode, the air channel 16 comprises a first air channel arranged on the first cover plate part and a second air channel arranged on the second cover plate part, and the second air channel forms the air ports on the inner surface of the second cover plate part. The limiting plate 18 is an L-shaped plate, and the freely folded part of the L-shaped plate is used for limiting the maximum stroke of the upward movement of the floating baffle 17. An air pressure detection hole 13 is arranged on the cylinder cover at one end of the outer cylinder body of the sealed shell 10 far away from the support plate, and an air pressure gauge 11 for detecting the air pressure in the sealed shell is arranged at the air pressure detection hole 13 on the cylinder cover of the outer cylinder body of the sealed shell 10.
The working process of the invention is as follows: when the power mechanism drives the operating rod 7 and the piston 5 to move together towards the rod cavity, the piston 5 compresses gas in the rod cavity, the gas in the rod cavity enters the rodless cavity through the air hole 8 and has a buffering effect on the piston 5, the one-way valve is closed at the moment, the gas in the rod cavity is discharged into the sealed shell 10 through the air hole 8 in the piston 5 and the convection hole 9 in the rodless cavity at the moment, the reading of the barometer 11 is observed, when the power mechanism drives the operating rod 7 and the piston 5 to act towards the rodless cavity, the one-way valve is conducted, the gas in the sealed shell 10 enters the rod cavity, the reading of the barometer 11 is observed, at the moment, one part of the gas in the rodless cavity is compressed and has a buffering effect on the piston 5 when entering the rod cavity through the air hole 8, the other part of the gas is discharged through the convection hole, the gas is adopted as a load to carry out a simulation test of the circuit breaker, and the actual working condition of the circuit breaker, the reliability of the test result is improved.
In other embodiments of the present invention, an air groove extending along the axis of the cushion cylinder may also be circumferentially disposed on the cylinder wall of the cushion cylinder, and the air groove forms a damping channel; air grooves can be arranged on the piston and the cylinder wall of the buffer cylinder to form a damping channel; the one-way valve can also be arranged on the cavity wall of the rodless cavity; when the use is satisfied, a one-way valve and a convection hole are not required to be arranged; the convection hole can be arranged on the side wall in the rodless cavity without arranging a cylinder cover of the buffer cylinder; one-way valves can also be arranged on the side walls of the rod cavities; the floating baffle can also be replaced by a floating baffle ball, and the limiting plate is used for limiting the stroke of the floating baffle ball; when the noise is in the standard requirement range or the occasion without gas pressure requirement, the external sealing shell is not needed; a limit plate is not required to be arranged; the limiting plate can also be replaced by a limiting cylinder sleeved on the operating rod to play a role of a limiting structure, and the floating baffle is positioned in the limiting cylinder; the gas pressure in the seal housing and the cushion cylinder can be adjusted according to actual needs.
The embodiment of the load simulation mechanism of the circuit breaker operating mechanism is the same as that of the load simulation mechanisms in the embodiments of the load simulation test device, and the details are not repeated here.
Claims (4)
1. The utility model provides a load analog mechanism of circuit breaker operating mechanism which characterized in that: the damping device comprises a buffer cylinder and a piston arranged in the buffer cylinder, wherein the piston is provided with an operating rod which is in transmission connection with an operating mechanism and can drive the piston to act together, and the piston is provided with a damping channel communicated with cavities on two sides of the piston; one of the cavity wall of the rod cavity and the cavity wall of the rodless cavity is provided with a one-way valve, and the other cavity wall is provided with a convection hole; the one-way valve is arranged on the cavity wall of the rod cavity, and the convection hole is arranged on the cavity wall of the rodless cavity; the buffer cylinder comprises a cylinder body and a cover plate in sealing fit with one end of the cylinder body, the cover plate, the cylinder body and the piston form the rod cavity, and the one-way valve is arranged on the cover plate; the check valve comprises an air passage which is arranged on the cover plate and can allow air outside the buffer cylinder to enter the rod cavity, the air passage forms an air port on the inner surface of the cover plate, and the check valve also comprises a floating baffle which is arranged on the air port and is used for sealing the air port when the piston moves close to the air port and opening the air port when the piston moves away from the air port; the piston is provided with an air hole communicated with the rod cavity and the rodless cavity, and the air hole forms a damping channel; the load simulation mechanism of the circuit breaker operating mechanism further comprises a sealing shell arranged on the periphery of the buffer cylinder in a surrounding mode, and an operating rod through hole used for enabling the operating rod to penetrate through and matched with the operating rod in a sliding sealing mode is formed in the cylinder wall of the sealing shell.
2. The circuit breaker actuator load simulator of claim 1, wherein: and the cover plate is provided with a limiting structure for limiting the maximum moving stroke of the floating baffle.
3. The circuit breaker actuator load simulator of claim 1, wherein: and the sealed shell is provided with a barometer for detecting the air pressure in the sealed shell.
4. The utility model provides a load analogue test device, includes power unit and load analogue mechanism, its characterized in that: the load simulation mechanism adopts the load simulation mechanism of the circuit breaker operating mechanism as claimed in any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642805.5A CN106291345B (en) | 2016-08-05 | 2016-08-05 | Load simulation mechanism and load simulation test device of circuit breaker operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642805.5A CN106291345B (en) | 2016-08-05 | 2016-08-05 | Load simulation mechanism and load simulation test device of circuit breaker operating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106291345A CN106291345A (en) | 2017-01-04 |
| CN106291345B true CN106291345B (en) | 2020-01-07 |
Family
ID=57666309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610642805.5A Active CN106291345B (en) | 2016-08-05 | 2016-08-05 | Load simulation mechanism and load simulation test device of circuit breaker operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106291345B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885737B (en) * | 2017-02-07 | 2019-09-06 | 平高东芝（河南）开关零部件制造有限公司 | Hydraulic bjuffer and operating mechanism load simulation device using the buffer |
| CN108983080B (en) * | 2018-04-24 | 2021-05-25 | 河南平高电气股份有限公司 | Circuit breaker simulated load test device for operating mechanism |
| CN113252339B (en) * | 2021-06-11 | 2021-10-01 | 四川航天长征装备制造有限公司 | Damping type mechanical simulation steering engine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2376073Y (en) * | 1999-04-29 | 2000-04-26 | 王大太 | Oleo damper for primary cut-out |
| US20030151478A1 (en) * | 2001-10-02 | 2003-08-14 | Dejan Radosavljevic | Protection device with lockout test |
| CN100572846C (en) * | 2006-04-28 | 2009-12-23 | 王明根 | The cushion cylinder device |
| CN102967825B (en) * | 2012-10-30 | 2015-02-18 | 河北工业大学 | Automatic reliability test device for electric operating mechanism of molded case circuit breaker and control method of device |
| CN203535190U (en) * | 2013-09-22 | 2014-04-09 | 赵亚恒 | Breaker load test device |
| CN203551262U (en) * | 2013-10-09 | 2014-04-16 | 中国西电电气股份有限公司 | Running-in testing device for spring operation mechanism of breaker |
| CN204028153U (en) * | 2014-09-11 | 2014-12-17 | 乐清市博骏自动化有限公司 | The driving mechanism of breaker mechanical trip detecting device |
| CN204458961U (en) * | 2015-01-20 | 2015-07-08 | 上海佳途汽车装备工程有限公司 | Air buffer |
-
2016
- 2016-08-05 CN CN201610642805.5A patent/CN106291345B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106291345A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106291345B (en) | Load simulation mechanism and load simulation test device of circuit breaker operating mechanism | |
| CN111006953A (en) | High-pressure hard rock broadband low-amplitude surface disturbance true triaxial test system | |
| CN203535190U (en) | Breaker load test device | |
| CN102345652A (en) | Buffering type cylinder | |
| JP2016070280A (en) | Air compressor structure | |
| KR100806959B1 (en) | Pressure balance with non-rotation piston | |
| CN210322043U (en) | Positioning protection device of thermometer probe | |
| CN106546405B (en) | A kind of horizontal continuity impact test apparatus and test method | |
| CN201363385Y (en) | Damper | |
| CN204419758U (en) | A kind of buffering hydraulic cylinder | |
| CN102305309A (en) | Hydraulic damping device for valve | |
| CN203130886U (en) | Elastic elastomer bidirectional limiting damper for guide rod | |
| CN202220898U (en) | Hydraulic damping device for valve | |
| CN102212972B (en) | Air pressure ejection instant starting device | |
| CN207436899U (en) | A kind of rock drill antivibration piston | |
| CN201526725U (en) | Pneumatic control valve | |
| JP2012193969A (en) | Impact testing apparatus with double hammering prevention mechanism and double hammering prevention method for impact testing apparatus | |
| CN103727162B (en) | Gas-liquid manifold type shock isolating apparatus | |
| CN208749707U (en) | Commutation balance pile-up valve | |
| CN111006940B (en) | Frequency conversion slow-speed disturbance rod mechanism capable of simulating blasting stress wave | |
| CN203374726U (en) | Damper | |
| CN112179598A (en) | Qualified detection device of bumper shock absorber shock attenuation effect | |
| CN104690790B (en) | A kind of micro-blasting device inside lumber | |
| RU2438108C1 (en) | Test bench for testing impact devices | |
| KR100973143B1 (en) | Vibration absorbers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |