CN208831719U - It is a kind of for improving the sealing device of toroid load cell insulation performance - Google Patents
It is a kind of for improving the sealing device of toroid load cell insulation performance Download PDFInfo
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- CN208831719U CN208831719U CN201821689883.1U CN201821689883U CN208831719U CN 208831719 U CN208831719 U CN 208831719U CN 201821689883 U CN201821689883 U CN 201821689883U CN 208831719 U CN208831719 U CN 208831719U
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- pressure
- pressure vessel
- load cell
- sensor
- insulation performance
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Abstract
The utility model discloses a kind of for improving the sealing device of toroid load cell insulation performance, it include: the pressure vessel for placing toroid load cell, upper cover is provided on the pressure vessel, the upper cover realizes the sealed clamping with pressure vessel by clamping device compresses seal, is provided with liquid dielectric medium in pressure vessel；Pressure interface is provided on the upper lid, the pressure interface is connected to pressure vessel inner cavity, applies pressure by the external world, by liquid dielectric medium full of in the having the gap of sensor sealant, playing the role of raising insulation performance；It is realized liquid dielectric medium by applying elevated pressures full of in the bubble of sealant, truncation water enters the channel of sensor, to meet particular surroundings lower sensor seal request, it can guarantee normal work of the sensor under certain hydraulic pressure, increase the scope of application of sensor.
Description
Technical field
The utility model relates to sensor technical field of sealing technology, more particularly to one kind are exhausted for improving toroid load cell
The sealing device of edge performance.
Background technique
In sensor production process, the insulation performance of sensor is to guarantee sensor normal use to a certain extent
Key technology requirement, traditional load cell can achieve IP65 and (prevented using mechanical or seal with elastometic washer, degree of protection
The water projected from all directions by nozzle immerses sensor and damages), and sensor insulation performance is required higher
Specific occasion, the degree of protection of sensor will reach the even higher rank of IP67 (immerse underwater several meters of depth), because of sensing
The structure design limitation of device cannot use sealing means, traditional sealing techniques such as rubber ring, welding to cannot be guaranteed sensor
Insulating requirements.
The sealing protection of load cell generally uses silicone rubber seal, still keeps good elasticity after silicon rubber solidification,
The performance of sensor is not influenced；But when practical operation, the chemical reaction of sealant in sensor cavity body, the inside has many gas
Bubble, under normal circumstances, the media such as extraneous water will not enter in bubble under the structure design and Seal Design of sensor, no
Sensor insulation performance can be had an impact；But if sensor uses under the operating condition of certain hydraulic pressure, water will be penetrated into
In bubble, so that the insulation performance of sensor is influenced, in hydraulic pressure lower sensor due to decreasing insulating, cisco unity malfunction.
Utility model content
In view of the foregoing drawbacks or insufficient, the purpose of this utility model is to provide one kind for improving toroid load cell
The sealing device of insulation performance.
To achieve the above objectives, the technical solution of the utility model are as follows:
It is a kind of for improving the sealing device of toroid load cell insulation performance, comprising: passed for placing annular dynamometry
The pressure vessel of sensor, upper cover is provided on the pressure vessel, and the upper cover passes through clamping device and compresses seal and pressure
Force container sealed clamping is provided with liquid dielectric medium in pressure vessel；Pressure interface, the pressure are provided on the upper lid
Interface is connected to pressure vessel inner cavity.
The clamping device includes bolt, and one end of the bolt passes through the through-hole on the outer edge of upper cover, is held with pressure
The outer peripheral screw hole of the bottom plate of device is tightened；The bottom plate outer edge is that the bottom plate of pressure vessel stretches out sidewall sections.
The compresses seal is O-ring seal, and is set between pressure vessel and upper cover.
The liquid dielectric medium includes silicone oil or oil for electrical appliances.
The pressure interface is set to the center of upper cover.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model provides a kind of for improving the sealing device of toroid load cell insulation performance, and pressure is held
It is full of liquid dielectric medium in device, sensor is put into wherein, pressure is applied by the external world, by liquid dielectric medium full of sensing
In the having the gap of device sealant, play the role of improving insulation performance；It is realized by applying elevated pressures by liquid dielectric
For medium full of in the bubble of sealant, truncation water enters the channel of sensor, wants to meet the sealing of particular surroundings lower sensor
It asks, can guarantee normal work of the sensor under certain hydraulic pressure, increase the scope of application of sensor.
Detailed description of the invention
Fig. 1 is utility model device structural schematic diagram.
In figure, 1- pressure interface, 2- upper cover, 3- bolt, 4- pressure vessel, 5- silicone oil, 6- toroid load cell, 7- pressure
Contracting sealing ring.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing, it is clear that described embodiment is only that this is practical
Novel a part of the embodiment, 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, belongs to the protection model of the utility model
It encloses.
Embodiment one
In the utility model, the sealing protection of the toroid load cell uses silicone rubber seal, in sensor cavity body
It is provided with sealant, sensor is debugged after the assembly is completed, by using the sealing device of the utility model to the gas in sealant
Bubble is sealed filling dielectric, improves sealing effect.
As shown in Figure 1, the utility model is used to improve the sealing device of toroid load cell insulation performance, comprising: use
In being provided with upper cover 2 on the pressure vessel 4 for placing toroid load cell 6, the pressure vessel 4, the upper cover 2 passes through clamping
Device and 4 sealed clamping of pressure vessel are provided with liquid dielectric medium 5 in pressure vessel 4；Pressure is provided in the upper cover 2
Interface 1, the pressure interface 1 are connected to 4 inner cavity of pressure vessel.
Illustratively, clamping device described in the utility model includes bolt 3, and one end of the bolt 3 passes through the outer of upper cover 2
Through-hole on edge is tightened with the outer peripheral screw hole of bottom plate of pressure vessel 4；The bottom plate outer edge is the bottom of pressure vessel 4
Plate stretches out sidewall sections.The compresses seal 7 is O-ring seal, and is set between pressure vessel 4 and upper cover 2.Pass through
What bolt can be convenient tightens pressure vessel and upper cover, while O-ring seal can guarantee the leakproofness of pressure vessel.
It should be noted that the liquid dielectric medium 5 includes silicone oil or oil for electrical appliances.Toroid load cell 6 is put
Enter wherein it is possible to put multiple sensors simultaneously, by external world's application pressure, the institute of the sealant by silicone oil full of sensor is seamed
In gap, play the role of improving insulation performance；It is realized silicone oil by applying elevated pressures full of in the bubble of sealant, is cut
Cutting off the water supply can guarantee sensor in certain water into the channel of sensor to meet particular surroundings lower sensor seal request
The normal work of pressure.
Preferably, the pressure interface 1 is set to the center of upper cover 2.The pressure interface 1 can connect external pressure or
Oil pressure pressurizing device.The design of device for filling oil, higher because applying pressure, forced area is larger, generates liquid using piston manometer
The mode of pressure is pressurizeed, and compare high pressure gas, and safety is higher, and pressure limit can be adjusted according to different requirements, and satisfaction is applied
Add the requirement of kind of rated pressure.
The encapsulating method of the utility model:
1), several toroid load cells 6 are put into the pressure vessel 4 full of liquid dielectric medium 5, the pressure is held
Device 4 and upper cover 2 seal；
2) pressure of nominal operation hydraulic pressure, is applied more than by the pressure interface 1 in upper cover 2, so that liquid dielectric is situated between
Matter 5 is penetrated into the bubble of the silicon rubber of toroid load cell 6, completes to seal the bubble of silicon rubber.On the pressure interface 1
Apply air pressure or oil pressure.
Wherein, the liquid dielectric medium includes silicone oil, transformer oil, oil circuit breaker oil etc..By by sensor silicon rubber
The method that is full of dielectric in bubble and can retain prevents water from entering bubble, guarantees the insulation performance of sensor.
Embodiment two
It is a kind of for measuring the sensor of rocket engine axial force, need to meet and (be equivalent to 2.5MPa for 250 meters under water
Pressure) depths, pressure resistance 2 hours, axial force transducer insulation resistance is greater than 1000 megohms of technical requirements.
By this method and forced oil device is used, axial force transducer is placed in the pressure vessel full of silicone oil, is applied
Add the oil pressure pressure of 6MPa, pressure maintaining 3 hours, is filled with silicone oil in sensor sealant bubble, protective effect is played, subsequent
In sensor actual measurement, insulation performance reaches technical requirements, meets rocket engine axial force transducer 250 meters of depths under water
Place, pressure resistance 2 hours, sensor insulation resistance is greater than 1000 megohms of technical requirements.
It is obvious to a person skilled in the art that will appreciate that above-mentioned specific embodiment is the preferred of the utility model
Scheme, therefore improvement, the variation that those skilled in the art may make certain parts in the utility model, embodiment
It is still the principles of the present invention, realization is still the purpose of this utility model, belongs to the range that the utility model is protected.
Claims (5)
1. a kind of for improving the sealing device of toroid load cell insulation performance characterized by comprising for placing ring
The pressure vessel (4) of shape load cell (6) is provided with upper cover (2) on the pressure vessel (4), and the upper cover (2) passes through folder
Tight device and compresses seal (7) and pressure vessel (4) sealed clamping, pressure vessel (4) is interior to be provided with liquid dielectric medium
(5)；It is provided with pressure interface (1) on the upper cover (2), the pressure interface (1) is connected to pressure vessel (4) inner cavity.
2. according to claim 1 for improving the sealing device of toroid load cell insulation performance, which is characterized in that
The clamping device includes bolt (3), and one end of the bolt (3) passes through the through-hole on the outer edge of upper cover (2), is held with pressure
The outer peripheral screw hole of bottom plate of device (4) is tightened；The bottom plate outer edge is that the bottom plate of pressure vessel (4) stretches out sidewall sections.
3. according to claim 1 or 2 for improving the sealing device of toroid load cell insulation performance, feature exists
In the compresses seal (7) is O-ring seal, and is set between pressure vessel (4) and upper cover (2).
4. according to claim 1 for improving the sealing device of toroid load cell insulation performance, which is characterized in that
The liquid dielectric medium (5) includes silicone oil or oil for electrical appliances.
5. according to claim 1 for improving the sealing device of toroid load cell insulation performance, which is characterized in that
The pressure interface (1) is set to the center of upper cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821689883.1U CN208831719U (en) | 2018-10-17 | 2018-10-17 | It is a kind of for improving the sealing device of toroid load cell insulation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821689883.1U CN208831719U (en) | 2018-10-17 | 2018-10-17 | It is a kind of for improving the sealing device of toroid load cell insulation performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831719U true CN208831719U (en) | 2019-05-07 |
Family
ID=66319033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821689883.1U Active CN208831719U (en) | 2018-10-17 | 2018-10-17 | It is a kind of for improving the sealing device of toroid load cell insulation performance |
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| Country | Link |
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| CN (1) | CN208831719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185458A (en) * | 2018-10-17 | 2019-01-11 | 秦川机床集团宝鸡仪表有限公司 | It is a kind of for improving the encapsulating method and its sealing device of toroid load cell insulation performance |
-
2018
- 2018-10-17 CN CN201821689883.1U patent/CN208831719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185458A (en) * | 2018-10-17 | 2019-01-11 | 秦川机床集团宝鸡仪表有限公司 | It is a kind of for improving the encapsulating method and its sealing device of toroid load cell insulation performance |
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