CN209117235U - For surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure - Google Patents
For surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure Download PDFInfo
- Publication number
- CN209117235U CN209117235U CN201822268785.7U CN201822268785U CN209117235U CN 209117235 U CN209117235 U CN 209117235U CN 201822268785 U CN201822268785 U CN 201822268785U CN 209117235 U CN209117235 U CN 209117235U
- Authority
- CN
- China
- Prior art keywords
- piston
- pressure measuring
- pressure
- measuring unit
- test
- 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
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to switchgear technical fields, and in particular to and it is a kind of for surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure, mounting hole is offered on the test compartment of switchgear；Pressure measuring unit for surveying pressure in inside switch cabinet arcing Test to Failure includes piston cylinder, piston component and pressure measuring assemblies；Piston cylinder is connect with test compartment seal；The inner cavity of piston cylinder is connected through mounting hole with test compartment interior；Piston component is slidingly disposed in piston cylinder, can be moved along piston cylinder, and is tightly connected with the inner wall of piston cylinder；Pressure measuring assemblies are connected and fixed with piston component, to measure pressure suffered by piston component；Pressure measuring assemblies are located at the outside of piston cylinder.Maximum gas pressure when test compartment interior arcing Test to Failure can be collected by the pressure measuring unit, product design is carried out for manufacturer and data reference and foundation is provided, and then effectively prevent various designs excessively occur, avoid the waste of cost.
Description
Technical field
The utility model relates to switchgear technical fields, and in particular to one kind is in inside switch cabinet arcing Test to Failure
When survey pressure pressure measuring unit.
Background technique
Internal arcing Test to Failure is the test verified in dangerous electric appliance effect to personnel protection, in metal enclosed switch and
Control equipment is in normal operation position and when arc event occurs in inside, for the personnel near normal running equipment provide through
The level of protection of overtesting.Influence and extent of the destruction that internal arcing failure generates and the size of switch cabinet shell body, arc voltage,
Arc duration and short circuit current size are related, its main feature is that the time is short, but energy is big, and destructive power is strong.When switchgear
When intensity is insufficiently resistant to the destructive power of internal arcing failure, the cabinet door and cover board of switchgear can be detached from cabinet body, and a large amount of high temperature are high
Body of calming the anger is gushed, and easily causes mortal injury to the personnel near switchgear, while can also damage to other equipment.
Interior unit cell model because insulation breakdown and the air gap breakdown, by the sharply expansion of gas make arcing position in cabinet body every
Chamber pressure increases suddenly, involves perimeter walls.When diaphragm strength deficiency, it will be deformed, fall off, crack and melt etc. and is existing
As.
Currently, can product be related to execute-in-place people by internal arcing Test to Failure in middle-high voltage switch industry
The personal safety of member.Most producers are when carrying out internal arcing Test to Failure, only by detecting internal arcing Test to Failure
The scaling loss situation of the positioning indicator on switchgear afterwards come judge the test by whether, in conjunction with test products inside burn
The breakage of the components such as cabinet door, cover board and partition is undermined to determine the reliability of the test products, in order to pass through internal arcing
Test to Failure constantly blindly reinforce to the structure of product to each numerous and confused regardless of expense of producer and reinforce, various cross is caused to design,
To cause the significant wastage of cost.
Utility model content
The purpose of this utility model is to be to provide a kind of survey for the survey pressure in inside switch cabinet arcing Test to Failure
Pressure device provides data foundation to the design of switchgear product strength for producer, is to pass through detection to solve existing each producer at present
Internal arcing Test to Failure blindly reinforces design, and various cross is caused to design, thus the problem of causing the significant wastage of cost.
The purpose of this utility model is achieved through the following technical solutions:
The utility model provides a kind of pressure measuring unit for the survey pressure in inside switch cabinet arcing Test to Failure, described to open
It closes and offers mounting hole on the test compartment of cabinet to install the pressure measuring unit；It is described to be used to try in inside switch cabinet arcing failure
It includes piston cylinder, piston component and pressure measuring assemblies that the pressure measuring unit of pressure is surveyed when testing；Piston cylinder and the test compartment seal
Connection；The inner cavity of the piston cylinder is connected through the mounting hole with the test compartment interior；Piston component is slideably set
It in the piston cylinder, can move along the piston cylinder, and be tightly connected with the inner wall of the piston cylinder；Pressure measuring assemblies
It is connected and fixed with the piston component, to measure pressure suffered by the piston component；The pressure measuring assemblies are located at described
The outside of piston cylinder.
Preferably, the piston component includes piston body and is sleeved and fixed in the sealing ring on the periphery of piston body；It is described
Sealing ring is sealed against in the inner wall of the piston cylinder；The piston body is connected and fixed with the pressure measuring assemblies.
Preferably, the groove of annular is offered on the outer peripheral surface of the piston body；The sealing ring is installed on the groove
In.
Preferably, the piston cylinder includes the first cylinder body and the second cylinder for being formed by the outside bending in outer end of the first cylinder body
Body；The inner end of first cylinder body is plugged and fixed in the mounting hole, and is connected with the test compartment；First cylinder
The hole wall of the outer wall of body and the mounting hole is tightly connected；The piston component is slidingly disposed in second cylinder body.
Preferably, the pressure measuring assemblies are pull and push dynamometer, and the pull and push dynamometer includes shell and is installed on shell
Measuring rod；The outer wall of the shell and the test compartment is relatively fixed；The extending direction of the measuring rod is parallel to described
The extending direction of second cylinder body, and the measuring rod is connected and fixed with the piston component.
Preferably, the pressure measuring unit further includes fixed frame；The shell is fixed on the test by the fixed frame
On the outer wall of compartment.
Preferably, the fixation hole coaxially arranged with the mounting hole is offered on the fixed frame；First cylinder body
Inner end ecto-entad is successively plugged and fixed in the fixation hole and the mounting hole.
Preferably, first cylinder body is connect with the second cylinder body rounding off.
As shown from the above technical solution, the advantages of the utility model and have the active effect that the utility model provides one kind
Pressure measuring unit, for surveying pressure in inside switch cabinet arcing Test to Failure.The pressure measuring unit is mounted on the test compartment of switchgear
On in the mounting hole that is opened up, piston cylinder connect with test compartment seal, and is connected through mounting hole with compartment interior is tested；It is living
Plug assembly is slidingly disposed in piston cylinder, and is tightly connected with the inner wall of piston cylinder；Pressure measuring assemblies and piston component connect
Connect fixation.When testing the compartment internal arcing Test to Failure of progress, the air pressure for testing compartment is sharply increased, and piston component is inside and outside to be produced
Raw pressure difference, piston component is displaced outwardly, and then pushes pressure measuring assemblies, so that pressure measuring assemblies obtain suffered by piston component
Maximum pressure value, by formula P=F/S, i.e., by the pressure value divided by the active area of piston component, thus obtain test every
The relative barometric pressure of room.Most atmosphere when test compartment interior arcing Test to Failure can be collected from there through the pressure measuring unit
Pressure carries out product design for manufacturer and provides data reference and foundation, for example, designing cabinet door and cabinet according to the maximum gas pressure
Connection structure, the connection structure of cover board and cabinet body and the intensity of partition of body, and then it effectively prevent various designs excessively occur, it keeps away
The waste of cost is exempted from.
Detailed description of the invention
The utility model is described in detail by following preferred embodiments and attached drawing for ease of explanation,.
Fig. 1 is the use state diagram of the utility model pressure measuring unit preferred embodiment.
Label declaration: 1, switchgear；11, compartment is tested；12, mounting hole；2, piston cylinder；21, the first cylinder body；22, second
Cylinder body；3, piston component；31, piston body；32, sealing ring；4, pressure measuring assemblies；41, shell；42, measuring rod；5, fixed
Frame；51, fixation hole.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only used to explain this reality
With novel, it is not used to limit the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " first ",
" second " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates indicated technology
The quantity of feature.Define " first " as a result, the feature of " second " can explicitly or implicitly include it is one or more
The feature.The meaning of " plurality " is two or more in the description of the present invention, unless otherwise clearly specific
It limits.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection.It can be mechanical connection, be also possible to be electrically connected.Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements or the interaction relationship of two elements.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention as the case may be.
Referring to Fig. 1, the utility model embodiment provides one kind for surveying pressure in inside switch cabinet arcing Test to Failure
Pressure measuring unit, for measure the test compartment of switchgear in internal arcing Test to Failure inside maximum pressure value.
Wherein, switchgear 1 is equipped with test compartment 11, tests and offers mounting hole 12 on the side of compartment 11.Test compartment
11 can be switch gear room or cable vault.Switchgear 1 is middle-high voltage switch.
In the present embodiment, pressure measuring unit includes fixed frame 5, the piston cylinder being mounted on fixed frame 52, slideably
Piston component 3 in piston cylinder 2, and be connected and fixed with piston component 3 to measure the pressure of 3 pressure of piston component
Measure component 4.Piston cylinder 2 and test compartment 11 are tightly connected, and pass through the inside of 12 connection test compartment 11 of mounting hole.Piston
The inner wall of component 3 and piston cylinder 2 is tightly connected.
Fixed frame 5 is fixed on the outer wall of test compartment 11, and offers a fixation hole 51.Fixation hole 51 and installation
Hole 12 is coaxially arranged, and fixation hole 51 is identical as the aperture of mounting hole 12.Fixed frame 5 is plate-like structure.
Piston cylinder 2 includes the first cylinder body 21 and the second cylinder body 22 formed by the outside bending in outer end of the first cylinder body 21.
First cylinder body 21 is connect with 22 rounding off of the second cylinder body.In other words, the junction of the first cylinder body 21 and the second cylinder body 22 has
There is knuckle.Piston cylinder 2 is whole L-shaped.
The inner end ecto-entad of first cylinder body 21 is successively plugged and fixed in fixation hole 51 and mounting hole 12, and with test compartment
11 are connected.The outer wall of first cylinder body 21 and the hole wall of mounting hole 12 are tightly connected, and the first cylinder body 21 is welded in fixation hole
51 hole wall.The side wall for offering mounting hole 12 for extending perpendicularly to test compartment 11 of first cylinder body 21.First cylinder body
21 inner end protrudes from the inner wall of test compartment.
The extending direction of second cylinder body 22 and the extending direction of the first cylinder body 21 are perpendicular, and the second cylinder body 22 is to downward
It stretches.Second cylinder body 22 fits in fixed frame 5.Piston cylinder 2 can integrally be hung on fixed frame 5 and switchgear 1 as a result,.
Piston component 3 is slidingly disposed in the second cylinder body 22.Piston component 3 includes piston body 31 and is sleeved and fixed in work
Sealing ring 32 on the periphery of cock body 31.
Specifically, the groove of annular is offered on the outer peripheral surface of piston body 31.The outer diameter of piston body 31 and the second cylinder body 22
Internal diameter match.
Sealing ring 32 is installed in groove.Sealing ring 32 is sealed against in the inner wall of the second cylinder body 22, and with the second cylinder body
22 inner wall is slidably connected.Piston body 31 and sealing ring 32 can be moved along the second cylinder body 22 jointly.
Pressure measuring assemblies 4 are located at the outside of piston cylinder 2, and are connect admittedly by fixed frame 5 with the outer wall for testing compartment 11
It is fixed.Pressure measuring assemblies 4 are pull and push dynamometer, and pull and push dynamometer includes shell 41 and the measuring rod 42 that is installed on shell 41.
Shell 41 by fixed frame 5 with test compartment 11 outer wall it is relatively fixed, and be arranged in the second cylinder body 22 just under
Side.Specifically, shell 41 is welded or is threadedly connected on fixed frame 5.
The extending direction of measuring rod 42 is parallel to the extending direction of the second cylinder body 22, and measuring rod 42 is connect with piston body 31
It is fixed.Measuring rod 42 extends along the vertical direction.Measuring rod 42 is threadedly coupled with piston body 31.
The working principle of the utility model are as follows: be connected to firstly, opening up one on the side of the test compartment 11 of switchgear 1
Test the mounting hole 12 inside compartment 11.2 grafting of piston cylinder is installed in fixation hole 51, so that piston cylinder 2 and fixed frame 5 connect
Stabilization is connect, piston cylinder 2 runs through fixed frame 5 along the thickness direction of fixed frame 5.It is living in the measuring rod 42 and piston cylinder 2 of pull and push dynamometer
Cock body 31, which is threadedly coupled, to be fixed.Pull and push dynamometer is fixed by screws on fixed frame 5, by pull and push dynamometer, piston component 3,
Piston cylinder 2 and fixed frame 5 are linked to be a firm structure.The sealing of first cylinder body 21 is plugged in mounting hole 12, and fixed frame 5
The side of test compartment 11 is fitted in, then fixed frame 5 is fixed on to the side of test compartment 11.
When test compartment 11 carries out internal arcing Test to Failure, the air pressure inside of test compartment 11 sharply increases, and tests
Component in compartment 11 is impacted, and the inside and outside generation pressure difference of piston component 3, under differential pressure action, piston component 3 is along piston cylinder
2 move out, and then push pressure measuring assemblies 4.The active force that pressure measuring assemblies 4 are come by the transmitting of piston component 3, in turn
Measure maximum pressure value suffered by piston component 3.By formula P=F/S, i.e., by the pressure value divided by piston component 3
Active area, to obtain the relative barometric pressure inside switchgear 1.Further, when piston component 3 is transported downwards along the second cylinder body 22
When dynamic, retracted downward, pull and push dynamometer are able to record maximum pressure value suffered by piston body 31 to measuring rod 42 therewith.Utilize piston cylinder
2, piston component 3 and pressure measuring assemblies 4 can collect maximum gas pressure when testing 11 inside arcing Test to Failure of compartment, be
Manufacturer carries out product design and provides data reference and foundation, for example, designing cabinet door and cabinet body according to the maximum gas pressure
The intensity of connection structure, the connection structure of cover board and cabinet body and partition, and then it effectively prevent various designs excessively occur, it avoids
The waste of cost.
In other embodiments (not shown), the outer diameter of the aperture of mounting hole less than the first cylinder body；At this point, the first cylinder body
Inner end is sealedly connected on the outer wall of test compartment, and is connected to test compartment interior.
In other embodiments (not shown), the metalwork of other shapes is can also be used in fixed frame.
The utility model at least has the following advantages:
1, test 11 inside arcing of compartment event can be collected using piston cylinder 2, piston component 3 and pressure measuring assemblies 4
Maximum gas pressure when barrier test carries out product design for manufacturer and provides data reference and foundation, for example, according to the most atmosphere
Pressure effectively prevent to design the connection structure, the connection structure of cover board and cabinet body and the intensity of partition of cabinet door and cabinet body
There is various cross to design, avoids the waste of cost.
2, piston cylinder 2 uses L shape, so that pull and push dynamometer can be parallel to the side arrangement of test compartment, saves space.
3, pressure measuring assemblies 4 use pull and push dynamometer, low in cost.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation
The description of mode ", " example ", " specific example " or " some examples " etc. means embodiment or example is combined to describe specific
Feature, structure, material or feature are contained at least one embodiment or example of the utility model.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of for surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure, which is characterized in that the switchgear
Test compartment on offer mounting hole；The pressure measuring unit includes:
Piston cylinder is connect with the test compartment seal；The inner cavity of the piston cylinder is through the mounting hole and the test compartment
Inside is connected；
Piston component is slidingly disposed in the piston cylinder, can be moved along the piston cylinder, and in the piston cylinder
Wall is tightly connected；
Pressure measuring assemblies are connected and fixed with the piston component, to measure pressure suffered by the piston component；The pressure
Measurement component is located at the outside of the piston cylinder.
2. pressure measuring unit according to claim 1, which is characterized in that the piston component includes piston body and is sleeved and fixed
Sealing ring on the periphery of piston body；The sealing ring is sealed against in the inner wall of the piston cylinder；The piston body and institute
Pressure measuring assemblies are stated to be connected and fixed.
3. pressure measuring unit according to claim 2, which is characterized in that offer annular on the outer peripheral surface of the piston body
Groove；The sealing ring is installed in the groove.
4. pressure measuring unit according to claim 1, which is characterized in that the piston cylinder is including the first cylinder body and by first
The second cylinder body that the outside bending in the outer end of cylinder body is formed；
The inner end of first cylinder body is plugged and fixed in the mounting hole, and is connected with the test compartment；Described first
The hole wall of the outer wall of cylinder body and the mounting hole is tightly connected；The piston component is slidingly disposed in second cylinder body.
5. pressure measuring unit according to claim 4, which is characterized in that the pressure measuring assemblies are pull and push dynamometer, described
Pull and push dynamometer includes shell and the measuring rod that is installed on shell；The outer wall of the shell and the test compartment is relatively fixed；
The extending direction of the measuring rod is parallel to the extending direction of second cylinder body, and the measuring rod and the piston component connect
Connect fixation.
6. pressure measuring unit according to claim 5, which is characterized in that described in inside switch cabinet arcing Test to Failure
When survey pressure pressure measuring unit further include fixed frame；The shell is fixed on the outer wall of the test compartment by the fixed frame
On.
7. pressure measuring unit according to claim 6, which is characterized in that offered on the fixed frame same with the mounting hole
The fixation hole of axis arrangement；The inner end ecto-entad of first cylinder body is successively plugged and fixed in the fixation hole and the installation
Hole.
8. pressure measuring unit according to claim 4, which is characterized in that first cylinder body and the second cylinder body rounding off connect
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268785.7U CN209117235U (en) | 2018-12-29 | 2018-12-29 | For surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268785.7U CN209117235U (en) | 2018-12-29 | 2018-12-29 | For surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209117235U true CN209117235U (en) | 2019-07-16 |
Family
ID=67208962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822268785.7U Active CN209117235U (en) | 2018-12-29 | 2018-12-29 | For surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209117235U (en) |
-
2018
- 2018-12-29 CN CN201822268785.7U patent/CN209117235U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207528861U (en) | A kind of status early warning device suitable for the detection of high-tension switch cabinet internal gas | |
| ES2901299T3 (en) | Valve device for switching equipment or the like, as well as uses thereof | |
| CN105629139A (en) | Gas insulated electrical equipment partial discharge multi-source combined monitoring experiment device | |
| CN102271476B (en) | Explosionproof operation box | |
| CN205844400U (en) | A kind of Intelligent electric force checking device | |
| CN209117235U (en) | For surveying the pressure measuring unit of pressure in inside switch cabinet arcing Test to Failure | |
| CN103456561B (en) | High-precision sulfur hexafluoride gas density relay | |
| CN111751602B (en) | Electroscope for distribution network insulated conductor | |
| CN209400334U (en) | A kind of testing machine of compression test | |
| CN206787712U (en) | Explosion side slope vibration monitor | |
| CN103456560B (en) | A kind of high antivibration sulfur hexafluoride gas density relay | |
| CN205426094U (en) | On line measurement wei jinsi gas chamber piston drift device | |
| CN201867400U (en) | Quick detecting device for moisture in SF6 (sulfur hexafluoride) gas in combined electrical appliance | |
| CN202888712U (en) | Intelligent load switch cabinet | |
| CN103217633A (en) | Sensor for detecting local discharge of high-voltage switch cabinet | |
| CN110942597A (en) | Prevent waterproof combustible gas alarm of jam | |
| CN206876677U (en) | A kind of gas detector | |
| CN112816833B (en) | Gas insulation test box | |
| CN208334188U (en) | A kind of SF6 leakage alarm host apparatus based on gsm communication technology | |
| CN201464449U (en) | Gas detection device on sealed container | |
| CN111380644A (en) | Pressure measuring device for measuring pressure during arcing fault test in switch cabinet | |
| CN201043974Y (en) | Gas detecting device outside of escape capsule | |
| CN106124802A (en) | A kind of acceleration measurement method and hydrargyrum acceleration transducer | |
| CN205506169U (en) | Electron level meter | |
| CN219796903U (en) | Sulfur hexafluoride monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |