CN109406032A - A kind of cable accessory interfacial pressure online testing device - Google Patents
A kind of cable accessory interfacial pressure online testing device Download PDFInfo
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- CN109406032A CN109406032A CN201811624257.9A CN201811624257A CN109406032A CN 109406032 A CN109406032 A CN 109406032A CN 201811624257 A CN201811624257 A CN 201811624257A CN 109406032 A CN109406032 A CN 109406032A
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- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Measuring Fluid Pressure (AREA)
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Abstract
The invention discloses a kind of cable accessory interfacial pressure online testing devices, it includes adapter body, first cable, second cable, at least one pressure transmits disk, connection gold utensil, shielding case, survey pressure host, at least one passive and wireless pressure sensor, the setting of at least one passive and wireless pressure sensor is at least one pressure transmitting disk, the core of first cable and the second cable is connected by connection gold utensil, shielding case snaps on the outside of connection gold utensil, at least one pressure transmitting disk is socketed on the core of the first cable and/or the second cable, and it is fixed on at least side of shielding case, pressure host is surveyed to be used to emit signal at least one passive and wireless pressure sensor, and it receives the signal of at least one passive and wireless pressure sensor return and pressure value is calculated according to received signal.The present invention realizes the communication with signal transmitting and receiving antenna by wireless radiofrequency mode, can carry out real-time monitoring to the pressure of the insulator interface of running cable and attachment.
Description
Technical field
The present invention relates to power cable technical field more particularly to a kind of cable accessory interfacial pressure online testing devices.
Background technique
Power cable line almost all in China's is to use twisted polyethylene cable (hereinafter referred to as " crosslinked cable ") at present,
The accessory product of crosslinked cable is using prefabricated structure, the core component stress cone and adapter body of prefabricated type cable accessory
Using rubber material, interfacial pressure mainly is provided by the interference fit of rubber parts and cable insulation, to guarantee boundary
There are enough dielectric strengths in face.With the increase of magnitude of interference, interface breakdown intensity increases therewith.Existing interfacial pressure test side
Method is all off-line type, mainly using ess-strain piece or pressure sensor (such as Chinese patent application CN108318164,
CN108007622 etc.) it measures, interfacial pressure can not be showed in conjunction with the relationship of electric field, and due to power cable section
For circle, ess-strain piece is difficult to post with cable, this kind of method cumbersome and measurement accuracy that operates not can guarantee.
At present without good easily variation of the method to cable and attachment insulator interface pressure after cable accessory installation and operation
Carry out online real-time monitoring, the insulation glue material of cable and attachment has occurred which kind of change has no way of learning, while to may
The failure of generation cannot accomplish real-time early warning, so that failure rate improves, maintenance has blindness, and maintenance cost is high.
It is therefore proposed that one kind both can be carried out online monitoring and monitoring device easy to operate, that measurement accuracy is high is very
It is necessary to improving, line security reliability of operation is significant.
Summary of the invention
The present invention is to solve above-mentioned one or more deficiency in the related technology and propose.Technical side according to the present invention
Case, can solve at present can not the running cable of on-line real time monitoring and attachment insulator interface pressure the problems such as.
To solve the above problems, the present invention provides a kind of cable accessory interfacial pressure online testing device, including connector master
Body, the first cable, the second cable, at least one pressure transmit disk, connection gold utensil, and shielding case surveys pressure host and at least one nothing
Source wireless pressure sensor, at least one passive and wireless pressure sensor setting transmit disk at least one described pressure
In, the core of first cable and the second cable is connected by the connection gold utensil, and the shielding case snaps onto the connection
On the outside of fitting, at least one pressure transmitting disk is socketed on the core of first cable and/or second cable, and
It is fixed on at least side of the shielding case, the survey pressure host is used for at least one passive and wireless pressure sensor hair
Signal is penetrated, and receives the signal of at least one passive and wireless pressure sensor return and is calculated according to received signal and pressed
Force value.
Preferably, at least one pressure transmitting disk is two valve structures, and the side of at least valve in two valve structures is set
There is at least one to place the groove of the passive and wireless pressure sensor.
Preferably, each valve of two valve structure has been equipped with the shrinkage pool and protrusion of connection function.
Preferably, the pressure transmitting disk is two, is separately fixed at the two sides of the shielding case.
Preferably, there are four the passive and wireless pressure sensor tools, wherein the pressure of the two sides of the shielding case is transmitted
Disk fixes two passive and wireless pressure sensors respectively.
Preferably, the pressure transmitting disk is two, and the side of each valve in two valve structure is equipped at least one
A groove for placing the passive and wireless pressure sensor.
Preferably, there are four the passive and wireless pressure sensor tools, two pressure transmitting disks are separately fixed at
In the groove of the side of each valve.
Preferably, the adapter body includes stress tube, connector stress cone, external shield, and the stress tube is arranged described
The periphery of shielding case and including the first cable of part and the second cable, the connector stress cone is arranged in the two of the adapter body
The periphery of the adapter body is arranged in side, the external shield.
Preferably, survey pressure host does not reside on cable run, is fixed on outside route, wirelessly with it is described
Passive and wireless pressure sensor carries out signal transmission.
Preferably, the survey pressure host issues radio-frequency pulse radio signal, and the passive and wireless pressure sensor receives
RF pulse signal, the physical characteristic through sensor internal material convert the signal into surface acoustic wave pulse signal, which exists
The passive and wireless pressure sensor inside device returning pressure signal is encountered on the direction of propagation, again through the physics of internal material
Surface acoustic wave signal is converted into radiofrequency signal and sent through antenna by effect, is surveyed after pressure host receives signal and is passed through analytical calculation
Obtain the pressure value on the passive and wireless pressure sensor.
Compared with prior art, the present invention include but is not limited to it is following the utility model has the advantages that
The communication with signal transmitting and receiving antenna is realized by wireless radiofrequency mode, it can be to the insulation of running cable and attachment
The pressure at interface carries out real-time monitoring.Passive and wireless pressure sensor is mounted in pressure transmitting disk, both can be attached to high-tension cable
Part and the pressure at cable insulation interface are monitored on-line, and do not influence the field distribution inside connector, judge cable with this
Whether the cooperation between attachment and cable body is able to satisfy service requirement, plays forewarning function to the failure that may occur.Meanwhile
Passive and wireless pressure sensor transmits the variation of disk pressure field using its internal material based on surface acoustic wave techniques come sensitive pressure,
Measured extraneous factor is converted into charge output, is not necessarily to power supply power supply, high reliablity.Also, it is multiple passive by being arranged
Wireless sensor, the signal that more each passive wireless sensor returns, can also further judge the interface of cable circumferencial direction
Whether pressure is evenly distributed.
Detailed description of the invention
Fig. 1 is cable accessory interfacial pressure online testing device structural schematic diagram provided by the invention；
Fig. 2 is the pressure transmitting dish structure schematic diagram of cable accessory interfacial pressure online testing device provided by the invention；
Fig. 3 is the Section A-A figure in Fig. 2.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, cable accessory interfacial pressure online testing device provided by the invention, including adapter body 1, first
Cable 9, the second cable 11, at least one pressure transmit disk 3,10, connection gold utensil 4, and shielding case 5 surveys pressure host 6, at least one
Passive and wireless pressure sensor 12, at least one passive and wireless pressure sensor 12 setting are passed at least one described pressure
Bid in 3,10, the core of first cable 9 and the second cable 11 is connected by the connection gold utensil 4, the connection include but
It is not limited to welding, crimping, mechanical connection etc., the shielding case 5 snaps onto 4 outside of connection gold utensil, at least one described pressure
Power transmitting disk 3,10 is socketed on the core of first cable 9 and/or second cable 11, and is fixed on the shielding case
5 at least side, the survey pressure host 6 are used to emit signal at least one described passive and wireless pressure sensor 12, and
It receives the signal that at least one described passive and wireless pressure sensor 12 returns and pressure value is calculated according to received signal, it can be real
The purpose of present wire type real-time monitoring.
Further, the side of the pressure transmitting disk 3,10 is equipped at least one and places the passive wireless sensor 12
Groove.The passive wireless sensor 12 is placed to the monitoring for carrying out interfacial pressure in a groove, avoiding will be described passive
Wireless sensor 12 is directly mounted on installation and measuring accuracy problem brought by cable accessory and cable insulation interface.
Further, the pressure transmitting disk 3,10 is two valve structures, and the side of at least valve in two valve structures is equipped with
At least one places the groove of the passive wireless sensor 12.
Further, each valve of two valve structure has been equipped with the shrinkage pool and protrusion of connection function, in use, can be straight
It connects and two valves of pressure transmitting disk is fastened on core.So set, both disk can be transmitted with Fast Installation pressure, while unrestricted
In the erection sequence of other component, although for example, pressure transmitting disk leans on inner, connection gold utensil with respect to connection gold utensil 4, shielding case 5
4, shielding case 5 can be installed first, not hinder the installation of pressure transmitting disk；If integral structure then needs first to install pressure transmitting disk,
Otherwise it needs to remove connection gold utensil 4, shielding case 5.
Further, the sensing antenna in described device is the self-contained device of the passive wireless sensor 12, is spiral shell
Shape is revolved, occupied space is few, plays receiving and transmitting signal.
Further, the pressure transmitting disk 3,10 is two, is separately fixed at the two sides of the shielding case 5.
Further, there are four the tools of passive wireless sensor 12, wherein the pressure of the two sides of the shielding case 5 is transmitted
Two passive wireless sensors 12 are fixed on disk 3,10 respectively.Preferably, the passive wireless sensor 12 is in each pressure
Power is transmitted symmetrical on disk 3,10.Multiple passive wireless sensors 12 are set, by comparing each passive wireless sensor 12
The signal of return can also further judge whether the interfacial pressure of cable circumferencial direction is evenly distributed.
Further, the pressure transmitting disk 3,10 is two, and the side of each valve in two valve structure is equipped with
At least one places the groove of the passive wireless sensor 12.
Further, there are four the passive wireless sensor 12 tools, be separately fixed at two pressure transmitting disks 3,
In the groove of the side of 10 each valve.
Further, the groove is externally provided with lid with matching.
Further, the adapter body 1 includes stress tube 2, connector stress cone 7, external shield 8, and the stress tube 2 is arranged
The shielding case 5 periphery and including part the first cable 9 and the second cable 11, the connector stress cone 7 is arranged described
The periphery of the adapter body 1 is arranged in the two sides of adapter body 1, the external shield 8.Stress tube 2, the connector of adapter body 1
Stress cone 7, external shield 8 play uniform electric field.
Further, the pressure transmitting disk 3,10 is fixed by screws in the side of shielding case 5.
Further, survey pressure host 6 does not reside on cable run, is fixed on outside route, wirelessly with
The passive and wireless pressure sensor 12 carries out signal transmission.
Further, the survey pressure host 6 issues radio-frequency pulse radio signal, and the passive wireless sensor 12 receives
RF pulse signal, the physical characteristic through sensor internal material convert the signal into surface acoustic wave pulse signal, which exists
The 12 interior arrangement returning pressure signal of passive wireless sensor is encountered on the direction of propagation, the physics through internal material is made again
It is sent with surface acoustic wave signal is converted into radiofrequency signal through antenna, institute is obtained by analytical calculation after host reception signal
State the pressure value on pressure sensor, it can be achieved that online real-time monitoring purpose.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although above with one
As property explanation and specific embodiment the present invention is described in detail, but on the basis of the present invention, some repair can be made to it
Change or improve or equivalent replacement of some of the technical features, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Range.
Claims (10)
1. a kind of cable accessory interfacial pressure online testing device, which is characterized in that including adapter body, the first cable, second
Cable, at least one pressure transmit disk, connection gold utensil, and shielding case surveys pressure host and at least one passive and wireless pressure sensor,
The setting of described at least one passive and wireless pressure sensor is at least one described pressure transmitting disk, first cable and the
The core of two cables is connected by the connection gold utensil, and the shielding case snaps on the outside of the connection gold utensil, and described at least one
A pressure transmitting disk is socketed on the core of first cable and/or second cable, and is fixed on the shielding case
At least side, the survey pressure host is used to emit signal at least one described passive and wireless pressure sensor, and receives institute
It states the signal of at least one passive and wireless pressure sensor return and pressure value is calculated according to received signal.
2. cable accessory interfacial pressure online testing device as described in claim 1, which is characterized in that at least one described pressure
It is two valve structures that power, which transmits disk, and the side of at least valve in two valve structures is equipped at least one and places the passive and wireless pressure
The groove of sensor.
3. cable accessory interfacial pressure online testing device as claimed in claim 2, which is characterized in that two valve structure
Each valve has been equipped with the shrinkage pool and protrusion of connection function.
4. cable accessory interfacial pressure online testing device as described in claim 1, which is characterized in that the pressure transmits disk
It is two, is separately fixed at the two sides of the shielding case.
5. cable accessory interfacial pressure online testing device as claimed in claim 4, which is characterized in that the passive and wireless pressure
There are four force snesor tools, wherein the pressure transmitting disk of the two sides of the shielding case fixes two passive and wireless pressure respectively
Sensor.
6. cable accessory interfacial pressure online testing device as claimed in claim 2, which is characterized in that the pressure transmits disk
It is two, the side of each valve in two valve structure is equipped at least one and places the passive and wireless pressure sensor
Groove.
7. cable accessory interfacial pressure online testing device as claimed in claim 6, which is characterized in that the passive and wireless pressure
There are four force snesor tools, is separately fixed in the groove of the side of each valve of two pressure transmitting disks.
8. cable accessory interfacial pressure online testing device as described in claim 1, which is characterized in that the adapter body packet
Stress tube, connector stress cone, external shield are included, the stress tube is arranged in the periphery of the shielding case and including the first cable of part
With the second cable, the two sides of the adapter body are arranged in the connector stress cone, and the external shield is arranged in the connector master
The periphery of body.
9. cable accessory interfacial pressure online testing device as described in claim 1, which is characterized in that the survey pressure host is not
It is mounted on cable run, is fixed on outside route, wirelessly carry out signal biography with the passive and wireless pressure sensor
It is defeated.
10. cable accessory interfacial pressure online testing device as described in claim 1, which is characterized in that host is pressed in the survey
Radio-frequency pulse radio signal is issued, the passive and wireless pressure sensor receives RF pulse signal, through sensor internal material
The physical characteristic of material converts the signal into surface acoustic wave pulse signal, which encounters the passive and wireless pressure in the propagation direction
Force snesor interior arrangement returning pressure signal, surface acoustic wave signal is converted into radio frequency by the physical action through internal material again
Signal is sent through antenna, is surveyed after pressure host receives signal and is obtained on the passive and wireless pressure sensor by analytical calculation
Pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624257.9A CN109406032B (en) | 2018-12-28 | 2018-12-28 | A kind of cable accessory interfacial pressure online testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624257.9A CN109406032B (en) | 2018-12-28 | 2018-12-28 | A kind of cable accessory interfacial pressure online testing device |
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| Publication Number | Publication Date |
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| CN109406032A true CN109406032A (en) | 2019-03-01 |
| CN109406032B CN109406032B (en) | 2019-07-02 |
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| CN201811624257.9A Active CN109406032B (en) | 2018-12-28 | 2018-12-28 | A kind of cable accessory interfacial pressure online testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112097982A (en) * | 2020-09-15 | 2020-12-18 | 四川大学 | Method for measuring interface pressure of cable intermediate joint under action of electric field and temperature difference |
| CN113138048A (en) * | 2021-03-25 | 2021-07-20 | 四川大学 | Nondestructive live-line detection method for cable joint interface pressure based on stress ultrasound |
| CN113237587A (en) * | 2021-02-02 | 2021-08-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Cable joint interface pressure measurement system |
| CN113767290A (en) * | 2019-04-30 | 2021-12-07 | 日立能源瑞士股份公司 | Power cable joint device and electrical system |
| CN113920829A (en) * | 2020-07-10 | 2022-01-11 | 广东电网有限责任公司江门供电局 | Be applied to cable joint installation training with mechanical feedback model |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112097982A (en) * | 2020-09-15 | 2020-12-18 | 四川大学 | Method for measuring interface pressure of cable intermediate joint under action of electric field and temperature difference |
| CN113237587A (en) * | 2021-02-02 | 2021-08-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Cable joint interface pressure measurement system |
| CN113138048A (en) * | 2021-03-25 | 2021-07-20 | 四川大学 | Nondestructive live-line detection method for cable joint interface pressure based on stress ultrasound |
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| CN109406032B (en) | 2019-07-02 |
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